Merge pull request #5824 from Icinga/feature/cxx11-features

Replace a few Boost features with equivalent C++11 features

icinga-app/icinga.cpp

@@ -34,7 +34,7 @@
 #include "base/process.hpp"
 #include "config.h"
 #include <boost/program_options.hpp>
-#include <boost/tuple/tuple.hpp>
+#include <thread>
 
 #ifndef _WIN32
 #	include <sys/types.h>
@@ -93,7 +93,7 @@ static std::vector<String> GlobalArgumentCompletion(const String& argument, cons
 		return std::vector<String>();
 }
 
-int Main(void)
+static int Main(void)
 {
 	int argc = Application::GetArgC();
 	char **argv = Application::GetArgV();
@@ -159,7 +159,7 @@ int Main(void)
 	Application::DeclareRLimitProcesses(Application::GetDefaultRLimitProcesses());
 	Application::DeclareRLimitStack(Application::GetDefaultRLimitStack());
 #endif /* __linux__ */
-	Application::DeclareConcurrency(boost::thread::hardware_concurrency());
+	Application::DeclareConcurrency(std::thread::hardware_concurrency());
 
 	ScriptGlobal::Set("AttachDebugger", false);
 
@@ -700,7 +700,7 @@ static int SetupService(bool install, int argc, char **argv)
 	return 0;
 }
 
-VOID ReportSvcStatus(DWORD dwCurrentState,
+static VOID ReportSvcStatus(DWORD dwCurrentState,
 	DWORD dwWin32ExitCode,
 	DWORD dwWaitHint)
 {
@@ -724,7 +724,7 @@ VOID ReportSvcStatus(DWORD dwCurrentState,
 	SetServiceStatus(l_SvcStatusHandle, &l_SvcStatus);
 }
 
-VOID WINAPI ServiceControlHandler(DWORD dwCtrl)
+static VOID WINAPI ServiceControlHandler(DWORD dwCtrl)
 {
 	if (dwCtrl == SERVICE_CONTROL_STOP) {
 		ReportSvcStatus(SERVICE_STOP_PENDING, NO_ERROR, 0);
@@ -732,7 +732,7 @@ VOID WINAPI ServiceControlHandler(DWORD dwCtrl)
 	}
 }
 
-VOID WINAPI ServiceMain(DWORD argc, LPSTR *argv)
+static VOID WINAPI ServiceMain(DWORD argc, LPSTR *argv)
 {
 	l_SvcStatusHandle = RegisterServiceCtrlHandler(
 		"icinga2",

lib/base/application.cpp

@@ -40,6 +40,7 @@
 #include <sstream>
 #include <iostream>
 #include <fstream>
+#include <thread>
 #ifdef __linux__
 #include <sys/prctl.h>
 #endif /* __linux__ */
@@ -157,8 +158,6 @@ void Application::InitializeBase(void)
 
 	/* make sure the thread pool gets initialized */
 	GetTP().Start();
-
-	Timer::Initialize();
 }
 
 void Application::UninitializeBase(void)
@@ -316,8 +315,6 @@ void Application::SetArgV(char **argv)
  */
 void Application::RunEventLoop(void)
 {
-	Timer::Initialize();
-
 	double lastLoop = Utility::GetTime();
 
 mainloop:
@@ -394,7 +391,7 @@ static void ReloadProcessCallback(const ProcessResult& pr)
 {
 	l_Restarting = false;
 
-	boost::thread t(std::bind(&ReloadProcessCallbackInternal, pr));
+	std::thread t(std::bind(&ReloadProcessCallbackInternal, pr));
 	t.detach();
 }
 
@@ -1508,7 +1505,7 @@ void Application::DeclareConcurrency(int ncpus)
  */
 int Application::GetConcurrency(void)
 {
-	Value defaultConcurrency = boost::thread::hardware_concurrency();
+	Value defaultConcurrency = std::thread::hardware_concurrency();
 	return ScriptGlobal::Get("Concurrency", &defaultConcurrency);
 }
 

lib/base/array-script.cpp

@@ -77,10 +77,7 @@ static void ArrayClear(void)
 
 static bool ArraySortCmp(const Function::Ptr& cmp, const Value& a, const Value& b)
 {
-	std::vector<Value> args;
-	args.push_back(a);
-	args.push_back(b);
-	return cmp->Invoke(args);
+	return cmp->Invoke({ a, b });
 }
 
 static Array::Ptr ArraySort(const std::vector<Value>& args)
@@ -154,9 +151,7 @@ static Array::Ptr ArrayMap(const Function::Ptr& function)
 
 	ObjectLock olock(self);
 	for (const Value& item : self) {
-		std::vector<Value> args;
-		args.push_back(item);
-		result->Add(function->Invoke(args));
+		result->Add(function->Invoke({ item }));
 	}
 
 	return result;
@@ -177,10 +172,7 @@ static Value ArrayReduce(const Function::Ptr& function)
 
 	ObjectLock olock(self);
 	for (size_t i = 1; i < self->GetLength(); i++) {
-		std::vector<Value> args;
-		args.push_back(result);
-		args.push_back(self->Get(i));
-		result = function->Invoke(args);
+		result = function->Invoke({ result, self->Get(i) });
 	}
 
 	return result;
@@ -198,9 +190,7 @@ static Array::Ptr ArrayFilter(const Function::Ptr& function)
 
 	ObjectLock olock(self);
 	for (const Value& item : self) {
-		std::vector<Value> args;
-		args.push_back(item);
-		if (function->Invoke(args))
+		if (function->Invoke({ item }))
 			result->Add(item);
 	}
 
@@ -217,9 +207,7 @@ static bool ArrayAny(const Function::Ptr& function)
 
 	ObjectLock olock(self);
 	for (const Value& item : self) {
-		std::vector<Value> args;
-		args.push_back(item);
-		if (function->Invoke(args))
+		if (function->Invoke({ item }))
 			return true;
 	}
 
@@ -236,9 +224,7 @@ static bool ArrayAll(const Function::Ptr& function)
 
 	ObjectLock olock(self);
 	for (const Value& item : self) {
-		std::vector<Value> args;
-		args.push_back(item);
-		if (!function->Invoke(args))
+		if (!function->Invoke({ item }))
 			return false;
 	}
 

lib/base/array.cpp

@@ -90,7 +90,7 @@ void Array::Add(Value&& value)
 {
 	ObjectLock olock(this);
 
-	m_Data.push_back(std::move(value));
+	m_Data.emplace_back(std::move(value));
 }
 
 /**

lib/base/configobject.cpp

@@ -706,7 +706,7 @@ ConfigObject::Ptr ConfigObject::GetObject(const String& type, const String& name
 	ConfigType *ctype = dynamic_cast<ConfigType *>(ptype.get());
 
 	if (!ctype)
-		return ConfigObject::Ptr();
+		return nullptr;
 
 	return ctype->GetObject(name);
 }

lib/base/configtype.cpp

@@ -33,7 +33,7 @@ ConfigObject::Ptr ConfigType::GetObject(const String& name) const
 	auto nt = m_ObjectMap.find(name);
 
 	if (nt == m_ObjectMap.end())
-		return ConfigObject::Ptr();
+		return nullptr;
 
 	return nt->second;
 }

lib/base/configwriter.hpp

@@ -61,7 +61,7 @@ public:
 	static void EmitArray(std::ostream& fp, int indentLevel, const Array::Ptr& val);
 	static void EmitArrayItems(std::ostream& fp, int indentLevel, const Array::Ptr& val);
 	static void EmitScope(std::ostream& fp, int indentLevel, const Dictionary::Ptr& val,
-	    const Array::Ptr& imports = Array::Ptr(), bool splitDot = false);
+	    const Array::Ptr& imports = nullptr, bool splitDot = false);
 	static void EmitValue(std::ostream& fp, int indentLevel, const Value& val);
 	static void EmitRaw(std::ostream& fp, const String& val);
 	static void EmitIndent(std::ostream& fp, int indentLevel);

lib/base/console.cpp

@@ -25,8 +25,7 @@ using namespace icinga;
 
 static ConsoleType l_ConsoleType = Console_Dumb;
 
-static void InitializeConsole(void)
-{
+INITIALIZE_ONCE([]() {
 	l_ConsoleType = Console_Dumb;
 
 #ifndef _WIN32
@@ -35,9 +34,7 @@ static void InitializeConsole(void)
 #else /* _WIN32 */
 	l_ConsoleType = Console_Windows;
 #endif /* _WIN32 */
-}
-
-INITIALIZE_ONCE(InitializeConsole);
+})
 
 ConsoleColorTag::ConsoleColorTag(int color, ConsoleType consoleType)
 	: m_Color(color), m_ConsoleType(consoleType)

lib/base/function-script.cpp

@@ -34,7 +34,7 @@ static Value FunctionCall(const std::vector<Value>& args)
 	Function::Ptr self = static_cast<Function::Ptr>(vframe->Self);
 
 	std::vector<Value> uargs(args.begin() + 1, args.end());
-	return self->Invoke(args[0], uargs);
+	return self->InvokeThis(args[0], uargs);
 }
 
 static Value FunctionCallV(const Value& thisArg, const Array::Ptr& args)
@@ -49,7 +49,7 @@ static Value FunctionCallV(const Value& thisArg, const Array::Ptr& args)
 		uargs = std::vector<Value>(args->Begin(), args->End());
 	}
 
-	return self->Invoke(thisArg, uargs);
+	return self->InvokeThis(thisArg, uargs);
 }
 
 

lib/base/function.cpp

@@ -42,7 +42,7 @@ Value Function::Invoke(const std::vector<Value>& arguments)
 	return m_Callback(arguments);
 }
 
-Value Function::Invoke(const Value& otherThis, const std::vector<Value>& arguments)
+Value Function::InvokeThis(const Value& otherThis, const std::vector<Value>& arguments)
 {
 	ScriptFrame frame;
 	frame.Self = otherThis;

lib/base/function.hpp

@@ -49,7 +49,7 @@ public:
 	{ }
 
 	Value Invoke(const std::vector<Value>& arguments = std::vector<Value>());
-	Value Invoke(const Value& otherThis, const std::vector<Value>& arguments = std::vector<Value>());
+	Value InvokeThis(const Value& otherThis, const std::vector<Value>& arguments = std::vector<Value>());
 
 	inline bool IsSideEffectFree(void) const
 	{

lib/base/object.hpp

@@ -31,9 +31,6 @@ using boost::intrusive_ptr;
 using boost::dynamic_pointer_cast;
 using boost::static_pointer_cast;
 
-#include <boost/tuple/tuple.hpp>
-using boost::tie;
-
 namespace icinga
 {
 

lib/base/objecttype.cpp

@@ -39,7 +39,7 @@ String ObjectType::GetName(void) const
 
 Type::Ptr ObjectType::GetBaseType(void) const
 {
-	return Type::Ptr();
+	return nullptr;
 }
 
 int ObjectType::GetAttributes(void) const

lib/base/primitivetype.cpp

@@ -34,7 +34,7 @@ String PrimitiveType::GetName(void) const
 Type::Ptr PrimitiveType::GetBaseType(void) const
 {
 	if (m_Base == "None")
-		return Type::Ptr();
+		return nullptr;
 	else
 		return Type::GetByName(m_Base);
 }

lib/base/process.cpp

@@ -30,6 +30,7 @@
 #include "base/json.hpp"
 #include <boost/algorithm/string/join.hpp>
 #include <boost/thread/once.hpp>
+#include <thread>
 #include <iostream>
 
 #ifndef _WIN32
@@ -539,7 +540,7 @@ void Process::ThreadInitialize(void)
 {
 	/* Note to self: Make sure this runs _after_ we've daemonized. */
 	for (int tid = 0; tid < IOTHREADS; tid++) {
-		boost::thread t(std::bind(&Process::IOThreadProc, tid));
+		std::thread t(std::bind(&Process::IOThreadProc, tid));
 		t.detach();
 	}
 }
@@ -573,10 +574,7 @@ Process::Arguments Process::PrepareCommand(const Value& command)
 #ifdef _WIN32
 	return command;
 #else /* _WIN32 */
-	args.push_back("sh");
-	args.push_back("-c");
-	args.push_back(command);
-	return args;
+	return { "sh", "-c", command };
 #endif
 }
 

lib/base/process.hpp

@@ -66,7 +66,7 @@ public:
 
 	static const std::deque<Process::Ptr>::size_type MaxTasksPerThread = 512;
 
-	Process(const Arguments& arguments, const Dictionary::Ptr& extraEnvironment = Dictionary::Ptr());
+	Process(const Arguments& arguments, const Dictionary::Ptr& extraEnvironment = nullptr);
 	~Process(void);
 
 	void SetTimeout(double timeout);

lib/base/scriptutils.cpp

@@ -405,7 +405,7 @@ ConfigObject::Ptr ScriptUtils::GetObject(const Value& vtype, const String& name)
 	ConfigType *ctype = dynamic_cast<ConfigType *>(ptype.get());
 
 	if (!ctype)
-		return ConfigObject::Ptr();
+		return nullptr;
 
 	return ctype->GetObject(name);
 }
@@ -477,7 +477,7 @@ Value ScriptUtils::Glob(const std::vector<Value>& args)
 		type = args[1];
 
 	std::vector<String> paths;
-	Utility::Glob(pathSpec, std::bind(&GlobCallbackHelper, boost::ref(paths), _1), type);
+	Utility::Glob(pathSpec, std::bind(&GlobCallbackHelper, std::ref(paths), _1), type);
 
 	return Array::FromVector(paths);
 }
@@ -496,7 +496,7 @@ Value ScriptUtils::GlobRecursive(const std::vector<Value>& args)
 		type = args[2];
 
 	std::vector<String> paths;
-	Utility::GlobRecursive(path, pattern, std::bind(&GlobCallbackHelper, boost::ref(paths), _1), type);
+	Utility::GlobRecursive(path, pattern, std::bind(&GlobCallbackHelper, std::ref(paths), _1), type);
 
 	return Array::FromVector(paths);
 }

lib/base/serializer.cpp

@@ -55,7 +55,7 @@ static Object::Ptr SerializeObject(const Object::Ptr& input, int attributeTypes)
 	Type::Ptr type = input->GetReflectionType();
 
 	if (!type)
-		return Object::Ptr();
+		return nullptr;
 
 	Dictionary::Ptr fields = new Dictionary();
 
@@ -168,7 +168,7 @@ Value icinga::Serialize(const Value& value, int attributeTypes)
 
 Value icinga::Deserialize(const Value& value, bool safe_mode, int attributeTypes)
 {
-	return Deserialize(Object::Ptr(), value, safe_mode, attributeTypes);
+	return Deserialize(nullptr, value, safe_mode, attributeTypes);
 }
 
 Value icinga::Deserialize(const Object::Ptr& object, const Value& value, bool safe_mode, int attributeTypes)

lib/base/socketevents-epoll.cpp

@@ -116,7 +116,7 @@ void SocketEventEngineEpoll::ThreadProc(int tid)
 				event.LifesupportReference = event.Descriptor.LifesupportObject;
 				VERIFY(event.LifesupportReference);
 
-				events.push_back(event);
+				events.emplace_back(std::move(event));
 			}
 		}
 

lib/base/socketevents-poll.cpp

@@ -108,7 +108,7 @@ void SocketEventEnginePoll::ThreadProc(int tid)
 				event.LifesupportReference = event.Descriptor.LifesupportObject;
 				VERIFY(event.LifesupportReference);
 
-				events.push_back(event);
+				events.emplace_back(std::move(event));
 			}
 		}
 
@@ -192,7 +192,7 @@ void SocketEventEnginePoll::ChangeEvents(SocketEvents *se, int events)
 
 		it->second.Events = events;
 
-		if (se->m_EnginePrivate && boost::this_thread::get_id() == m_Threads[tid].get_id())
+		if (se->m_EnginePrivate && std::this_thread::get_id() == m_Threads[tid].get_id())
 			((pollfd *)se->m_EnginePrivate)->events = events;
 		else
 			m_FDChanged[tid] = true;

lib/base/socketevents.cpp

@@ -50,7 +50,7 @@ void SocketEventEngine::Start(void)
 
 		InitializeThread(tid);
 
-		m_Threads[tid] = boost::thread(std::bind(&SocketEventEngine::ThreadProc, this, tid));
+		m_Threads[tid] = std::thread(std::bind(&SocketEventEngine::ThreadProc, this, tid));
 	}
 }
 
@@ -58,7 +58,7 @@ void SocketEventEngine::WakeUpThread(int sid, bool wait)
 {
 	int tid = sid % SOCKET_IOTHREADS;
 
-	if (boost::this_thread::get_id() == m_Threads[tid].get_id())
+	if (std::this_thread::get_id() == m_Threads[tid].get_id())
 		return;
 
 	if (wait) {

lib/base/socketevents.hpp

@@ -22,7 +22,7 @@
 
 #include "base/i2-base.hpp"
 #include "base/socket.hpp"
-#include <boost/thread.hpp>
+#include <thread>
 
 #ifndef _WIN32
 #	include <poll.h>
@@ -109,7 +109,7 @@ protected:
 	virtual void Unregister(SocketEvents *se) = 0;
 	virtual void ChangeEvents(SocketEvents *se, int events) = 0;
 
-	boost::thread m_Threads[SOCKET_IOTHREADS];
+	std::thread m_Threads[SOCKET_IOTHREADS];
 	SOCKET m_EventFDs[SOCKET_IOTHREADS][2];
 	bool m_FDChanged[SOCKET_IOTHREADS];
 	boost::mutex m_EventMutex[SOCKET_IOTHREADS];

lib/base/threadpool.cpp

@@ -23,7 +23,6 @@
 #include "base/utility.hpp"
 #include "base/exception.hpp"
 #include "base/application.hpp"
-#include <boost/bind.hpp>
 #include <iostream>
 
 using namespace icinga;
@@ -54,7 +53,7 @@ void ThreadPool::Start(void)
 	for (size_t i = 0; i < sizeof(m_Queues) / sizeof(m_Queues[0]); i++)
 		m_Queues[i].SpawnWorker(m_ThreadGroup);
 
-	m_MgmtThread = boost::thread(std::bind(&ThreadPool::ManagerThreadProc, this));
+	m_MgmtThread = std::thread(std::bind(&ThreadPool::ManagerThreadProc, this));
 }
 
 void ThreadPool::Stop(void)
@@ -213,7 +212,7 @@ bool ThreadPool::Post(const ThreadPool::WorkFunction& callback, SchedulerPolicy
 		if (policy == LowLatencyScheduler)
 			queue.SpawnWorker(m_ThreadGroup);
 
-		queue.Items.push_back(wi);
+		queue.Items.emplace_back(std::move(wi));
 		queue.CV.notify_one();
 	}
 
@@ -337,7 +336,7 @@ void ThreadPool::Queue::SpawnWorker(boost::thread_group& group)
 			Log(LogDebug, "ThreadPool", "Spawning worker thread.");
 
 			Threads[i] = WorkerThread(ThreadIdle);
-			Threads[i].Thread = group.create_thread(boost::bind(&ThreadPool::WorkerThread::ThreadProc, boost::ref(Threads[i]), boost::ref(*this)));
+			Threads[i].Thread = group.create_thread(std::bind(&ThreadPool::WorkerThread::ThreadProc, std::ref(Threads[i]), std::ref(*this)));
 
 			break;
 		}

lib/base/threadpool.hpp

@@ -26,6 +26,7 @@
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/condition_variable.hpp>
 #include <deque>
+#include <thread>
 
 namespace icinga
 {
@@ -121,7 +122,7 @@ private:
 
 	boost::thread_group m_ThreadGroup;
 
-	boost::thread m_MgmtThread;
+	std::thread m_MgmtThread;
 	boost::mutex m_MgmtMutex;
 	boost::condition_variable m_MgmtCV;
 	bool m_Stopped;

lib/base/timer.cpp

@@ -20,28 +20,58 @@
 #include "base/timer.hpp"
 #include "base/debug.hpp"
 #include "base/utility.hpp"
-#include <boost/thread/thread.hpp>
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/condition_variable.hpp>
 #include <boost/multi_index_container.hpp>
 #include <boost/multi_index/ordered_index.hpp>
 #include <boost/multi_index/key_extractors.hpp>
+#include <thread>
 
 using namespace icinga;
 
+namespace icinga {
+
+class TimerHolder {
+public:
+	TimerHolder(Timer *timer)
+		: m_Timer(timer)
+	{ }
+
+	inline Timer *GetObject(void) const
+	{
+		return m_Timer;
+	}
+
+	inline double GetNextUnlocked(void) const
+	{
+		return m_Timer->m_Next;
+	}
+
+	operator Timer *(void) const
+	{
+		return m_Timer;
+	}
+
+private:
+	Timer *m_Timer;
+};
+
+}
+
 typedef boost::multi_index_container<
-	Timer::Holder,
+	TimerHolder,
 	boost::multi_index::indexed_by<
-		boost::multi_index::ordered_unique<boost::multi_index::const_mem_fun<Timer::Holder, Timer *, &Timer::Holder::GetObject> >,
-		boost::multi_index::ordered_non_unique<boost::multi_index::const_mem_fun<Timer::Holder, double, &Timer::Holder::GetNextUnlocked> >
+		boost::multi_index::ordered_unique<boost::multi_index::const_mem_fun<TimerHolder, Timer *, &TimerHolder::GetObject> >,
+		boost::multi_index::ordered_non_unique<boost::multi_index::const_mem_fun<TimerHolder, double, &TimerHolder::GetNextUnlocked> >
 	>
 > TimerSet;
 
 static boost::mutex l_TimerMutex;
 static boost::condition_variable l_TimerCV;
-static boost::thread l_TimerThread;
+static std::thread l_TimerThread;
 static bool l_StopTimerThread;
 static TimerSet l_Timers;
+static int l_AliveTimers;
 
 /**
  * Constructor for the Timer class.
@@ -58,29 +88,16 @@ Timer::~Timer(void)
 	Stop(true);
 }
 
-/**
- * Initializes the timer sub-system.
- */
-void Timer::Initialize(void)
-{
-	boost::mutex::scoped_lock lock(l_TimerMutex);
-	l_StopTimerThread = false;
-	l_TimerThread = boost::thread(&Timer::TimerThreadProc);
-}
-
-/**
- * Disables the timer sub-system.
- */
 void Timer::Uninitialize(void)
 {
-	{
-		boost::mutex::scoped_lock lock(l_TimerMutex);
-		l_StopTimerThread = true;
-		l_TimerCV.notify_all();
-	}
+       {
+	       boost::mutex::scoped_lock lock(l_TimerMutex);
+	       l_StopTimerThread = true;
+	       l_TimerCV.notify_all();
+       }
 
-	if (l_TimerThread.joinable())
-		l_TimerThread.join();
+       if (l_TimerThread.joinable())
+	       l_TimerThread.join();
 }
 
 /**
@@ -129,6 +146,11 @@ void Timer::Start(void)
 	{
 		boost::mutex::scoped_lock lock(l_TimerMutex);
 		m_Started = true;
+
+		if (l_AliveTimers++ == 0) {
+			l_StopTimerThread = false;
+			l_TimerThread = std::thread(&Timer::TimerThreadProc);
+		}
 	}
 
 	InternalReschedule(false);
@@ -144,6 +166,18 @@ void Timer::Stop(bool wait)
 
 	boost::mutex::scoped_lock lock(l_TimerMutex);
 
+	if (m_Started && --l_AliveTimers == 0) {
+		l_StopTimerThread = true;
+		l_TimerCV.notify_all();
+
+		lock.unlock();
+
+		if (l_TimerThread.joinable() && l_TimerThread.get_id() != std::this_thread::get_id())
+			l_TimerThread.join();
+
+		lock.lock();
+	}
+
 	m_Started = false;
 	l_Timers.erase(this);
 

lib/base/timer.hpp

@@ -26,6 +26,8 @@
 
 namespace icinga {
 
+class TimerHolder;
+
 /**
  * A timer that periodically triggers an event.
  *
@@ -39,6 +41,8 @@ public:
 	Timer(void);
 	~Timer(void);
 
+	static void Uninitialize(void);
+
 	void SetInterval(double interval);
 	double GetInterval(void) const;
 
@@ -52,31 +56,6 @@ public:
 
 	boost::signals2::signal<void(const Timer::Ptr&)> OnTimerExpired;
 
-	class Holder {
-	public:
-		Holder(Timer *timer)
-			: m_Timer(timer)
-		{ }
-
-		inline Timer *GetObject(void) const
-		{
-			return m_Timer;
-		}
-
-		inline double GetNextUnlocked(void) const
-		{
-			return m_Timer->m_Next;
-		}
-
-		operator Timer *(void) const
-		{
-			return m_Timer;
-		}
-
-	private:
-		Timer *m_Timer;
-	};
-
 private:
 	double m_Interval; /**< The interval of the timer. */
 	double m_Next; /**< When the next event should happen. */
@@ -88,10 +67,7 @@ private:
 
 	static void TimerThreadProc(void);
 
-	static void Initialize(void);
-	static void Uninitialize(void);
-
-	friend class Application;
+	friend class TimerHolder;
 };
 
 }

lib/base/tlsstream.cpp

@@ -38,7 +38,7 @@ bool I2_EXPORT TlsStream::m_SSLIndexInitialized = false;
  * @param role The role of the client.
  * @param sslContext The SSL context for the client.
  */
-TlsStream::TlsStream(const Socket::Ptr& socket, const String& hostname, ConnectionRole role, const boost::shared_ptr<SSL_CTX>& sslContext)
+TlsStream::TlsStream(const Socket::Ptr& socket, const String& hostname, ConnectionRole role, const std::shared_ptr<SSL_CTX>& sslContext)
 	: SocketEvents(socket, this), m_Eof(false), m_HandshakeOK(false), m_VerifyOK(true), m_ErrorCode(0),
 	  m_ErrorOccurred(false),  m_Socket(socket), m_Role(role), m_SendQ(new FIFO()), m_RecvQ(new FIFO()),
 	  m_CurrentAction(TlsActionNone), m_Retry(false), m_Shutdown(false)
@@ -46,7 +46,7 @@ TlsStream::TlsStream(const Socket::Ptr& socket, const String& hostname, Connecti
 	std::ostringstream msgbuf;
 	char errbuf[120];
 
-	m_SSL = boost::shared_ptr<SSL>(SSL_new(sslContext.get()), SSL_free);
+	m_SSL = std::shared_ptr<SSL>(SSL_new(sslContext.get()), SSL_free);
 
 	if (!m_SSL) {
 		msgbuf << "SSL_new() failed with code " << ERR_peek_error() << ", \"" << ERR_error_string(ERR_peek_error(), errbuf) << "\"";
@@ -119,10 +119,10 @@ String TlsStream::GetVerifyError(void) const
  *
  * @returns The X509 certificate.
  */
-boost::shared_ptr<X509> TlsStream::GetClientCertificate(void) const
+std::shared_ptr<X509> TlsStream::GetClientCertificate(void) const
 {
 	boost::mutex::scoped_lock lock(m_Mutex);
-	return boost::shared_ptr<X509>(SSL_get_certificate(m_SSL.get()), &Utility::NullDeleter);
+	return std::shared_ptr<X509>(SSL_get_certificate(m_SSL.get()), &Utility::NullDeleter);
 }
 
 /**
@@ -130,10 +130,10 @@ boost::shared_ptr<X509> TlsStream::GetClientCertificate(void) const
  *
  * @returns The X509 certificate.
  */
-boost::shared_ptr<X509> TlsStream::GetPeerCertificate(void) const
+std::shared_ptr<X509> TlsStream::GetPeerCertificate(void) const
 {
 	boost::mutex::scoped_lock lock(m_Mutex);
-	return boost::shared_ptr<X509>(SSL_get_peer_certificate(m_SSL.get()), X509_free);
+	return std::shared_ptr<X509>(SSL_get_peer_certificate(m_SSL.get()), X509_free);
 }
 
 void TlsStream::OnEvent(int revents)

lib/base/tlsstream.hpp

@@ -48,13 +48,13 @@ class I2_BASE_API TlsStream : public Stream, private SocketEvents
 public:
 	DECLARE_PTR_TYPEDEFS(TlsStream);
 
-	TlsStream(const Socket::Ptr& socket, const String& hostname, ConnectionRole role, const boost::shared_ptr<SSL_CTX>& sslContext = MakeSSLContext());
+	TlsStream(const Socket::Ptr& socket, const String& hostname, ConnectionRole role, const std::shared_ptr<SSL_CTX>& sslContext = MakeSSLContext());
 	~TlsStream(void);
 
 	Socket::Ptr GetSocket(void) const;
 
-	boost::shared_ptr<X509> GetClientCertificate(void) const;
-	boost::shared_ptr<X509> GetPeerCertificate(void) const;
+	std::shared_ptr<X509> GetClientCertificate(void) const;
+	std::shared_ptr<X509> GetPeerCertificate(void) const;
 
 	void Handshake(void);
 
@@ -74,7 +74,7 @@ public:
 	String GetVerifyError(void) const;
 
 private:
-	boost::shared_ptr<SSL> m_SSL;
+	std::shared_ptr<SSL> m_SSL;
 	bool m_Eof;
 	mutable boost::mutex m_Mutex;
 	mutable boost::condition_variable m_CV;

lib/base/tlsutility.cpp

@@ -81,13 +81,13 @@ void InitializeOpenSSL(void)
  * @param cakey CA certificate chain file.
  * @returns An SSL context.
  */
-boost::shared_ptr<SSL_CTX> MakeSSLContext(const String& pubkey, const String& privkey, const String& cakey)
+std::shared_ptr<SSL_CTX> MakeSSLContext(const String& pubkey, const String& privkey, const String& cakey)
 {
 	char errbuf[120];
 
 	InitializeOpenSSL();
 
-	boost::shared_ptr<SSL_CTX> sslContext = boost::shared_ptr<SSL_CTX>(SSL_CTX_new(SSLv23_method()), SSL_CTX_free);
+	std::shared_ptr<SSL_CTX> sslContext = std::shared_ptr<SSL_CTX>(SSL_CTX_new(SSLv23_method()), SSL_CTX_free);
 
 	EC_KEY *ecdh = EC_KEY_new_by_curve_name(NID_secp384r1);
 
@@ -174,7 +174,7 @@ boost::shared_ptr<SSL_CTX> MakeSSLContext(const String& pubkey, const String& pr
  * @param context The ssl context.
  * @param cipherList The ciper list.
  **/
-void SetCipherListToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const String& cipherList)
+void SetCipherListToSSLContext(const std::shared_ptr<SSL_CTX>& context, const String& cipherList)
 {
 	char errbuf[256];
 
@@ -198,7 +198,7 @@ void SetCipherListToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const
  * @param context The ssl context.
  * @param tlsProtocolmin The minimum TLS protocol version.
  */
-void SetTlsProtocolminToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const String& tlsProtocolmin)
+void SetTlsProtocolminToSSLContext(const std::shared_ptr<SSL_CTX>& context, const String& tlsProtocolmin)
 {
 	long flags = SSL_CTX_get_options(context.get());
 
@@ -226,7 +226,7 @@ void SetTlsProtocolminToSSLContext(const boost::shared_ptr<SSL_CTX>& context, co
  * @param context The SSL context.
  * @param crlPath The path to the CRL file.
  */
-void AddCRLToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const String& crlPath)
+void AddCRLToSSLContext(const std::shared_ptr<SSL_CTX>& context, const String& crlPath)
 {
 	char errbuf[120];
 	X509_STORE *x509_store = SSL_CTX_get_cert_store(context.get());
@@ -281,7 +281,7 @@ static String GetX509NameCN(X509_NAME *name)
  * @param certificate The X509 certificate.
  * @returns The common name.
  */
-String GetCertificateCN(const boost::shared_ptr<X509>& certificate)
+String GetCertificateCN(const std::shared_ptr<X509>& certificate)
 {
 	return GetX509NameCN(X509_get_subject_name(certificate.get()));
 }
@@ -292,7 +292,7 @@ String GetCertificateCN(const boost::shared_ptr<X509>& certificate)
  * @param pemfile The filename.
  * @returns An X509 certificate.
  */
-boost::shared_ptr<X509> GetX509Certificate(const String& pemfile)
+std::shared_ptr<X509> GetX509Certificate(const String& pemfile)
 {
 	char errbuf[120];
 	X509 *cert;
@@ -327,7 +327,7 @@ boost::shared_ptr<X509> GetX509Certificate(const String& pemfile)
 
 	BIO_free(fpcert);
 
-	return boost::shared_ptr<X509>(cert, X509_free);
+	return std::shared_ptr<X509>(cert, X509_free);
 }
 
 int MakeX509CSR(const String& cn, const String& keyfile, const String& csrfile, const String& certfile, bool ca)
@@ -402,7 +402,7 @@ int MakeX509CSR(const String& cn, const String& keyfile, const String& csrfile,
 		X509_NAME *subject = X509_NAME_new();
 		X509_NAME_add_entry_by_txt(subject, "CN", MBSTRING_ASC, (unsigned char *)cn.CStr(), -1, -1, 0);
 
-		boost::shared_ptr<X509> cert = CreateCert(key, subject, subject, key, ca);
+		std::shared_ptr<X509> cert = CreateCert(key, subject, subject, key, ca);
 
 		X509_NAME_free(subject);
 
@@ -491,7 +491,7 @@ int MakeX509CSR(const String& cn, const String& keyfile, const String& csrfile,
 	return 1;
 }
 
-boost::shared_ptr<X509> CreateCert(EVP_PKEY *pubkey, X509_NAME *subject, X509_NAME *issuer, EVP_PKEY *cakey, bool ca)
+std::shared_ptr<X509> CreateCert(EVP_PKEY *pubkey, X509_NAME *subject, X509_NAME *issuer, EVP_PKEY *cakey, bool ca)
 {
 	X509 *cert = X509_new();
 	X509_set_version(cert, 2);
@@ -568,7 +568,7 @@ boost::shared_ptr<X509> CreateCert(EVP_PKEY *pubkey, X509_NAME *subject, X509_NA
 
 	X509_sign(cert, cakey, EVP_sha256());
 
-	return boost::shared_ptr<X509>(cert, X509_free);
+	return std::shared_ptr<X509>(cert, X509_free);
 }
 
 String GetIcingaCADir(void)
@@ -576,7 +576,7 @@ String GetIcingaCADir(void)
 	return Application::GetLocalStateDir() + "/lib/icinga2/ca";
 }
 
-boost::shared_ptr<X509> CreateCertIcingaCA(EVP_PKEY *pubkey, X509_NAME *subject)
+std::shared_ptr<X509> CreateCertIcingaCA(EVP_PKEY *pubkey, X509_NAME *subject)
 {
 	char errbuf[120];
 
@@ -589,7 +589,7 @@ boost::shared_ptr<X509> CreateCertIcingaCA(EVP_PKEY *pubkey, X509_NAME *subject)
 	if (!cakeybio) {
 		Log(LogCritical, "SSL")
 		    << "Could not open CA key file '" << cakeyfile << "': " << ERR_peek_error() << ", \"" << ERR_error_string(ERR_peek_error(), errbuf) << "\"";
-		return boost::shared_ptr<X509>();
+		return std::shared_ptr<X509>();
 	}
 
 	EVP_PKEY *privkey = PEM_read_bio_PrivateKey(cakeybio, NULL, NULL, NULL);
@@ -597,25 +597,25 @@ boost::shared_ptr<X509> CreateCertIcingaCA(EVP_PKEY *pubkey, X509_NAME *subject)
 	if (!privkey) {
 		Log(LogCritical, "SSL")
 		    << "Could not read private key from CA key file '" << cakeyfile << "': " << ERR_peek_error() << ", \"" << ERR_error_string(ERR_peek_error(), errbuf) << "\"";
-		return boost::shared_ptr<X509>();
+		return std::shared_ptr<X509>();
 	}
 
 	BIO_free(cakeybio);
 
 	String cacertfile = cadir + "/ca.crt";
 
-	boost::shared_ptr<X509> cacert = GetX509Certificate(cacertfile);
+	std::shared_ptr<X509> cacert = GetX509Certificate(cacertfile);
 
 	return CreateCert(pubkey, subject, X509_get_subject_name(cacert.get()), privkey, false);
 }
 
-boost::shared_ptr<X509> CreateCertIcingaCA(const boost::shared_ptr<X509>& cert)
+std::shared_ptr<X509> CreateCertIcingaCA(const std::shared_ptr<X509>& cert)
 {
-	boost::shared_ptr<EVP_PKEY> pkey = boost::shared_ptr<EVP_PKEY>(X509_get_pubkey(cert.get()), EVP_PKEY_free);
+	std::shared_ptr<EVP_PKEY> pkey = std::shared_ptr<EVP_PKEY>(X509_get_pubkey(cert.get()), EVP_PKEY_free);
 	return CreateCertIcingaCA(pkey.get(), X509_get_subject_name(cert.get()));
 }
 
-String CertificateToString(const boost::shared_ptr<X509>& cert)
+String CertificateToString(const std::shared_ptr<X509>& cert)
 {
 	BIO *mem = BIO_new(BIO_s_mem());
 	PEM_write_bio_X509(mem, cert.get());
@@ -630,7 +630,7 @@ String CertificateToString(const boost::shared_ptr<X509>& cert)
 	return result;
 }
 
-boost::shared_ptr<X509> StringToCertificate(const String& cert)
+std::shared_ptr<X509> StringToCertificate(const String& cert)
 {
 	BIO *bio = BIO_new(BIO_s_mem());
 	BIO_write(bio, (const void *)cert.CStr(), cert.GetLength());
@@ -642,7 +642,7 @@ boost::shared_ptr<X509> StringToCertificate(const String& cert)
 	if (!rawCert)
 		BOOST_THROW_EXCEPTION(std::invalid_argument("The specified X509 certificate is invalid."));
 
-	return boost::shared_ptr<X509>(rawCert, X509_free);
+	return std::shared_ptr<X509>(rawCert, X509_free);
 }
 
 String PBKDF2_SHA1(const String& password, const String& salt, int iterations)
@@ -762,7 +762,7 @@ String RandomString(int length)
 	return result;
 }
 
-bool VerifyCertificate(const boost::shared_ptr<X509>& caCertificate, const boost::shared_ptr<X509>& certificate)
+bool VerifyCertificate(const std::shared_ptr<X509>& caCertificate, const std::shared_ptr<X509>& certificate)
 {
 	X509_STORE *store = X509_STORE_new();
 

lib/base/tlsutility.hpp

@@ -31,31 +31,30 @@
 #include <openssl/x509v3.h>
 #include <openssl/evp.h>
 #include <openssl/rand.h>
-#include <boost/smart_ptr/shared_ptr.hpp>
 #include <boost/exception/info.hpp>
 
 namespace icinga
 {
 
 void I2_BASE_API InitializeOpenSSL(void);
-boost::shared_ptr<SSL_CTX> I2_BASE_API MakeSSLContext(const String& pubkey = String(), const String& privkey = String(), const String& cakey = String());
-void I2_BASE_API AddCRLToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const String& crlPath);
-void I2_BASE_API SetCipherListToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const String& cipherList);
-void I2_BASE_API SetTlsProtocolminToSSLContext(const boost::shared_ptr<SSL_CTX>& context, const String& tlsProtocolmin);
-String I2_BASE_API GetCertificateCN(const boost::shared_ptr<X509>& certificate);
-boost::shared_ptr<X509> I2_BASE_API GetX509Certificate(const String& pemfile);
+std::shared_ptr<SSL_CTX> I2_BASE_API MakeSSLContext(const String& pubkey = String(), const String& privkey = String(), const String& cakey = String());
+void I2_BASE_API AddCRLToSSLContext(const std::shared_ptr<SSL_CTX>& context, const String& crlPath);
+void I2_BASE_API SetCipherListToSSLContext(const std::shared_ptr<SSL_CTX>& context, const String& cipherList);
+void I2_BASE_API SetTlsProtocolminToSSLContext(const std::shared_ptr<SSL_CTX>& context, const String& tlsProtocolmin);
+String I2_BASE_API GetCertificateCN(const std::shared_ptr<X509>& certificate);
+std::shared_ptr<X509> I2_BASE_API GetX509Certificate(const String& pemfile);
 int I2_BASE_API MakeX509CSR(const String& cn, const String& keyfile, const String& csrfile = String(), const String& certfile = String(), bool ca = false);
-boost::shared_ptr<X509> I2_BASE_API CreateCert(EVP_PKEY *pubkey, X509_NAME *subject, X509_NAME *issuer, EVP_PKEY *cakey, bool ca);
+std::shared_ptr<X509> I2_BASE_API CreateCert(EVP_PKEY *pubkey, X509_NAME *subject, X509_NAME *issuer, EVP_PKEY *cakey, bool ca);
 String I2_BASE_API GetIcingaCADir(void);
-String I2_BASE_API CertificateToString(const boost::shared_ptr<X509>& cert);
-boost::shared_ptr<X509> I2_BASE_API StringToCertificate(const String& cert);
-boost::shared_ptr<X509> I2_BASE_API CreateCertIcingaCA(EVP_PKEY *pubkey, X509_NAME *subject);
-boost::shared_ptr<X509> I2_BASE_API CreateCertIcingaCA(const boost::shared_ptr<X509>& cert);
+String I2_BASE_API CertificateToString(const std::shared_ptr<X509>& cert);
+std::shared_ptr<X509> I2_BASE_API StringToCertificate(const String& cert);
+std::shared_ptr<X509> I2_BASE_API CreateCertIcingaCA(EVP_PKEY *pubkey, X509_NAME *subject);
+std::shared_ptr<X509> I2_BASE_API CreateCertIcingaCA(const std::shared_ptr<X509>& cert);
 String I2_BASE_API PBKDF2_SHA1(const String& password, const String& salt, int iterations);
 String I2_BASE_API SHA1(const String& s, bool binary = false);
 String I2_BASE_API SHA256(const String& s);
 String I2_BASE_API RandomString(int length);
-bool I2_BASE_API VerifyCertificate(const boost::shared_ptr<X509>& caCertificate, const boost::shared_ptr<X509>& certificate);
+bool I2_BASE_API VerifyCertificate(const std::shared_ptr<X509>& caCertificate, const std::shared_ptr<X509>& certificate);
 
 class I2_BASE_API openssl_error : virtual public std::exception, virtual public boost::exception { };
 

lib/base/type.cpp

@@ -49,12 +49,12 @@ Type::Ptr Type::GetByName(const String& name)
 	Dictionary::Ptr typesNS = ScriptGlobal::Get("Types", &Empty);
 
 	if (!typesNS)
-		return Type::Ptr();
+		return nullptr;
 
 	Value ptype = typesNS->Get(name);
 
 	if (!ptype.IsObjectType<Type>())
-		return Type::Ptr();
+		return nullptr;
 
 	return ptype;
 }

lib/base/typetype-script.cpp

@@ -28,9 +28,7 @@ using namespace icinga;
 static void InvokeAttributeHandlerHelper(const Function::Ptr& callback,
     const Object::Ptr& object, const Value& cookie)
 {
-	std::vector<Value> arguments;
-	arguments.push_back(object);
-	callback->Invoke(arguments);
+	callback->Invoke({ object });
 }
 
 static void TypeRegisterAttributeHandler(const String& fieldName, const Function::Ptr& callback)

lib/base/utility.cpp

@@ -28,6 +28,7 @@
 #include "base/objectlock.hpp"
 #include <mmatch.h>
 #include <boost/lexical_cast.hpp>
+#include <boost/thread/tss.hpp>
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/classification.hpp>
 #include <boost/algorithm/string/trim.hpp>
@@ -769,7 +770,7 @@ void Utility::MkDirP(const String& path, int mode)
 void Utility::RemoveDirRecursive(const String& path)
 {
 	std::vector<String> paths;
-	Utility::GlobRecursive(path, "*", std::bind(&Utility::CollectPaths, _1, boost::ref(paths)), GlobFile | GlobDirectory);
+	Utility::GlobRecursive(path, "*", std::bind(&Utility::CollectPaths, _1, std::ref(paths)), GlobFile | GlobDirectory);
 
 	/* This relies on the fact that GlobRecursive lists the parent directory
 	   first before recursing into subdirectories. */
@@ -975,31 +976,31 @@ String Utility::FormatDuration(double duration)
 
 	if (duration >= 86400) {
 		int days = duration / 86400;
-		tokens.push_back(Convert::ToString(days) + (days != 1 ? " days" : " day"));
+		tokens.emplace_back(Convert::ToString(days) + (days != 1 ? " days" : " day"));
 		duration = static_cast<int>(duration) % 86400;
 	}
 
 	if (duration >= 3600) {
 		int hours = duration / 3600;
-		tokens.push_back(Convert::ToString(hours) + (hours != 1 ? " hours" : " hour"));
+		tokens.emplace_back(Convert::ToString(hours) + (hours != 1 ? " hours" : " hour"));
 		duration = static_cast<int>(duration) % 3600;
 	}
 
 	if (duration >= 60) {
 		int minutes = duration / 60;
-		tokens.push_back(Convert::ToString(minutes) + (minutes != 1 ? " minutes" : " minute"));
+		tokens.emplace_back(Convert::ToString(minutes) + (minutes != 1 ? " minutes" : " minute"));
 		duration = static_cast<int>(duration) % 60;
 	}
 
 	if (duration >= 1) {
 		int seconds = duration;
-		tokens.push_back(Convert::ToString(seconds) + (seconds != 1 ? " seconds" : " second"));
+		tokens.emplace_back(Convert::ToString(seconds) + (seconds != 1 ? " seconds" : " second"));
 	}
 
 	if (tokens.size() == 0) {
 		int milliseconds = std::floor(duration * 1000);
 		if (milliseconds >= 1)
-			tokens.push_back(Convert::ToString(milliseconds) + (milliseconds != 1 ? " milliseconds" : " millisecond"));
+			tokens.emplace_back(Convert::ToString(milliseconds) + (milliseconds != 1 ? " milliseconds" : " millisecond"));
 		else
 			tokens.push_back("less than 1 millisecond");
 	}
@@ -1221,7 +1222,7 @@ String Utility::GetThreadName(void)
 
 	if (!name) {
 		std::ostringstream idbuf;
-		idbuf << boost::this_thread::get_id();
+		idbuf << std::this_thread::get_id();
 		return idbuf.str();
 	}
 

lib/base/value.cpp

@@ -100,7 +100,7 @@ Type::Ptr Value::GetReflectionType(void) const
 		case ValueObject:
 			return boost::get<Object::Ptr>(m_Value)->GetReflectionType();
 		default:
-			return Type::Ptr();
+			return nullptr;
 	}
 }
 

lib/base/value.hpp

@@ -55,6 +55,9 @@ public:
 	inline Value(void)
 	{ }
 
+	inline Value(std::nullptr_t)
+	{ }
+
 	inline Value(int value)
 		: m_Value(double(value))
 	{ }

lib/checker/checkercomponent.cpp

@@ -79,7 +79,7 @@ void CheckerComponent::Start(bool runtimeCreated)
 	    << "'" << GetName() << "' started.";
 
 
-	m_Thread = boost::thread(std::bind(&CheckerComponent::CheckThreadProc, this));
+	m_Thread = std::thread(std::bind(&CheckerComponent::CheckThreadProc, this));
 
 	m_ResultTimer = new Timer();
 	m_ResultTimer->SetInterval(5);

lib/checker/checkercomponent.hpp

@@ -25,12 +25,12 @@
 #include "base/configobject.hpp"
 #include "base/timer.hpp"
 #include "base/utility.hpp"
-#include <boost/thread/thread.hpp>
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/condition_variable.hpp>
 #include <boost/multi_index_container.hpp>
 #include <boost/multi_index/ordered_index.hpp>
 #include <boost/multi_index/key_extractors.hpp>
+#include <thread>
 
 namespace icinga
 {
@@ -91,7 +91,7 @@ private:
 	boost::mutex m_Mutex;
 	boost::condition_variable m_CV;
 	bool m_Stopped;
-	boost::thread m_Thread;
+	std::thread m_Thread;
 
 	CheckableSet m_IdleCheckables;
 	CheckableSet m_PendingCheckables;

lib/cli/apisetuputility.cpp

@@ -132,16 +132,7 @@ bool ApiSetupUtility::SetupMasterCertificates(const String& cn)
 	Utility::CopyFile(ca, target_ca);
 
 	/* fix permissions: root -> icinga daemon user */
-	std::vector<String> files;
-	files.push_back(ca_path);
-	files.push_back(ca);
-	files.push_back(ca_key);
-	files.push_back(target_ca);
-	files.push_back(key);
-	files.push_back(csr);
-	files.push_back(cert);
-
-	for (const String& file : files) {
+	for (const String& file : { ca_path, ca, ca_key, target_ca, key, csr, cert }) {
 		if (!Utility::SetFileOwnership(file, user, group)) {
 			Log(LogWarning, "cli")
 			    << "Cannot set ownership for user '" << user << "' group '" << group << "' on file '" << file << "'.";
@@ -201,9 +192,7 @@ bool ApiSetupUtility::SetupMasterEnableApi(void)
 {
 	Log(LogInformation, "cli", "Enabling the 'api' feature.");
 
-	std::vector<std::string> features;
-	features.push_back("api");
-	FeatureUtility::EnableFeatures(features);
+	FeatureUtility::EnableFeatures({ "api" });
 
 	return true;
 }

lib/cli/casigncommand.cpp

@@ -69,14 +69,14 @@ int CASignCommand::Run(const boost::program_options::variables_map& vm, const st
 
 	String certRequestText = request->Get("cert_request");
 
-	boost::shared_ptr<X509> certRequest = StringToCertificate(certRequestText);
+	std::shared_ptr<X509> certRequest = StringToCertificate(certRequestText);
 
 	if (!certRequest) {
 		Log(LogCritical, "cli", "Certificate request is invalid. Could not parse X.509 certificate for the 'cert_request' attribute.");
 		return 1;
 	}
 
-	boost::shared_ptr<X509> certResponse = CreateCertIcingaCA(certRequest);
+	std::shared_ptr<X509> certResponse = CreateCertIcingaCA(certRequest);
 
 	BIO *out = BIO_new(BIO_s_mem());
 	X509_NAME_print_ex(out, X509_get_subject_name(certRequest.get()), 0, XN_FLAG_ONELINE & ~ASN1_STRFLGS_ESC_MSB);

lib/cli/clicommand.cpp

@@ -130,7 +130,7 @@ CLICommand::Ptr CLICommand::GetByName(const std::vector<String>& name)
 	auto it = GetRegistry().find(name);
 
 	if (it == GetRegistry().end())
-		return CLICommand::Ptr();
+		return nullptr;
 
 	return it->second;
 }

lib/cli/consolecommand.cpp

@@ -196,9 +196,9 @@ char *ConsoleCommand::ConsoleCompleteHelper(const char *word, int state)
 
 			l_ApiClient->AutocompleteScript(l_Session, word, l_ScriptFrame->Sandboxed,
 			    std::bind(&ConsoleCommand::AutocompleteScriptCompletionHandler,
-			    boost::ref(mutex), boost::ref(cv), boost::ref(ready),
+			    std::ref(mutex), std::ref(cv), std::ref(ready),
 			    _1, _2,
-			    boost::ref(suggestions)));
+			    std::ref(suggestions)));
 
 			{
 				boost::mutex::scoped_lock lock(mutex);
@@ -426,9 +426,9 @@ incomplete:
 
 				l_ApiClient->ExecuteScript(l_Session, command, scriptFrame.Sandboxed,
 				    std::bind(&ConsoleCommand::ExecuteScriptCompletionHandler,
-				    boost::ref(mutex), boost::ref(cv), boost::ref(ready),
+				    std::ref(mutex), std::ref(cv), std::ref(ready),
 				    _1, _2,
-				    boost::ref(result), boost::ref(eptr)));
+				    std::ref(result), std::ref(eptr)));
 
 				{
 					boost::mutex::scoped_lock lock(mutex);

lib/cli/daemoncommand.cpp

@@ -234,7 +234,7 @@ int DaemonCommand::Run(const po::variables_map& vm, const std::vector<std::strin
 
 	std::vector<std::string> configs;
 	if (vm.count("config") > 0)
-		configs = vm["config"].as < std::vector<std::string> >() ;
+		configs = vm["config"].as<std::vector<std::string> >();
 	else if (!vm.count("no-config"))
 		configs.push_back(Application::GetSysconfDir() + "/icinga2/icinga2.conf");
 

lib/cli/daemonutility.cpp

@@ -52,7 +52,7 @@ static void IncludeZoneDirRecursive(const String& path, const String& package, b
 	ConfigCompiler::RegisterZoneDir("_etc", path, zoneName);
 
 	std::vector<Expression *> expressions;
-	Utility::GlobRecursive(path, "*.conf", std::bind(&ConfigCompiler::CollectIncludes, boost::ref(expressions), _1, zoneName, package), GlobFile);
+	Utility::GlobRecursive(path, "*.conf", std::bind(&ConfigCompiler::CollectIncludes, std::ref(expressions), _1, zoneName, package), GlobFile);
 	DictExpression expr(expressions);
 	if (!ExecuteExpression(&expr))
 		success = false;
@@ -75,7 +75,7 @@ static void IncludeNonLocalZone(const String& zonePath, const String& package, b
 	}
 
 	std::vector<Expression *> expressions;
-	Utility::GlobRecursive(zonePath, "*.conf", std::bind(&ConfigCompiler::CollectIncludes, boost::ref(expressions), _1, zoneName, package), GlobFile);
+	Utility::GlobRecursive(zonePath, "*.conf", std::bind(&ConfigCompiler::CollectIncludes, std::ref(expressions), _1, zoneName, package), GlobFile);
 	DictExpression expr(expressions);
 	if (!ExecuteExpression(&expr))
 		success = false;
@@ -126,7 +126,7 @@ bool DaemonUtility::ValidateConfigFiles(const std::vector<std::string>& configs,
 
 	String zonesEtcDir = Application::GetZonesDir();
 	if (!zonesEtcDir.IsEmpty() && Utility::PathExists(zonesEtcDir))
-		Utility::Glob(zonesEtcDir + "/*", std::bind(&IncludeZoneDirRecursive, _1, "_etc", boost::ref(success)), GlobDirectory);
+		Utility::Glob(zonesEtcDir + "/*", std::bind(&IncludeZoneDirRecursive, _1, "_etc", std::ref(success)), GlobDirectory);
 
 	if (!success)
 		return false;
@@ -135,7 +135,7 @@ bool DaemonUtility::ValidateConfigFiles(const std::vector<std::string>& configs,
 	 * are authoritative on this node and are checked in HasZoneConfigAuthority(). */
 	String packagesVarDir = Application::GetLocalStateDir() + "/lib/icinga2/api/packages";
 	if (Utility::PathExists(packagesVarDir))
-		Utility::Glob(packagesVarDir + "/*", std::bind(&IncludePackage, _1, boost::ref(success)), GlobDirectory);
+		Utility::Glob(packagesVarDir + "/*", std::bind(&IncludePackage, _1, std::ref(success)), GlobDirectory);
 
 	if (!success)
 		return false;
@@ -143,7 +143,7 @@ bool DaemonUtility::ValidateConfigFiles(const std::vector<std::string>& configs,
 	/* Load cluster synchronized configuration files */
 	String zonesVarDir = Application::GetLocalStateDir() + "/lib/icinga2/api/zones";
 	if (Utility::PathExists(zonesVarDir))
-		Utility::Glob(zonesVarDir + "/*", std::bind(&IncludeNonLocalZone, _1, "_cluster", boost::ref(success)), GlobDirectory);
+		Utility::Glob(zonesVarDir + "/*", std::bind(&IncludeNonLocalZone, _1, "_cluster", std::ref(success)), GlobDirectory);
 
 	if (!success)
 		return false;

lib/cli/featureutility.cpp

@@ -200,11 +200,11 @@ bool FeatureUtility::GetFeatures(std::vector<String>& features, bool get_disable
 		/* disable = available-enabled */
 		String available_pattern = GetFeaturesAvailablePath() + "/*.conf";
 		std::vector<String> available;
-		Utility::Glob(available_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, boost::ref(available)), GlobFile);
+		Utility::Glob(available_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, std::ref(available)), GlobFile);
 
 		String enabled_pattern = GetFeaturesEnabledPath() + "/*.conf";
 		std::vector<String> enabled;
-		Utility::Glob(enabled_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, boost::ref(enabled)), GlobFile);
+		Utility::Glob(enabled_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, std::ref(enabled)), GlobFile);
 
 		std::sort(available.begin(), available.end());
 		std::sort(enabled.begin(), enabled.end());
@@ -217,7 +217,7 @@ bool FeatureUtility::GetFeatures(std::vector<String>& features, bool get_disable
 		/* all enabled features */
 		String enabled_pattern = GetFeaturesEnabledPath() + "/*.conf";
 
-		Utility::Glob(enabled_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, boost::ref(features)), GlobFile);
+		Utility::Glob(enabled_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, std::ref(features)), GlobFile);
 	}
 
 	return true;

lib/cli/nodesetupcommand.cpp

@@ -159,12 +159,7 @@ int NodeSetupCommand::SetupMaster(const boost::program_options::variables_map& v
 	/* write zones.conf and update with zone + endpoint information */
 	Log(LogInformation, "cli", "Generating zone and object configuration.");
 
-	std::vector<String> globalZones;
-
-	globalZones.push_back("global-templates");
-	globalZones.push_back("director-global");
-
-	NodeUtility::GenerateNodeMasterIcingaConfig(globalZones);
+	NodeUtility::GenerateNodeMasterIcingaConfig({ "global-templates", "director-global" });
 
 	/* update the ApiListener config - SetupMaster() will always enable it */
 	Log(LogInformation, "cli", "Updating the APIListener feature.");
@@ -291,7 +286,7 @@ int NodeSetupCommand::SetupNode(const boost::program_options::variables_map& vm,
 		return 1;
 	}
 
-	boost::shared_ptr<X509> trustedcert = GetX509Certificate(vm["trustedcert"].as<std::string>());
+	std::shared_ptr<X509> trustedcert = GetX509Certificate(vm["trustedcert"].as<std::string>());
 
 	Log(LogInformation, "cli")
 	    << "Verifying trusted certificate file '" << vm["trustedcert"].as<std::string>() << "'.";
@@ -362,17 +357,13 @@ int NodeSetupCommand::SetupNode(const boost::program_options::variables_map& vm,
 	/* disable the notifications feature */
 	Log(LogInformation, "cli", "Disabling the Notification feature.");
 
-	std::vector<std::string> disable;
-	disable.push_back("notification");
-	FeatureUtility::DisableFeatures(disable);
+	FeatureUtility::DisableFeatures({ "notification" });
 
 	/* enable the ApiListener config */
 
 	Log(LogInformation, "cli", "Updating the ApiListener feature.");
 
-	std::vector<std::string> enable;
-	enable.push_back("api");
-	FeatureUtility::EnableFeatures(enable);
+	FeatureUtility::EnableFeatures({ "api" });
 
 	String apipath = FeatureUtility::GetFeaturesAvailablePath() + "/api.conf";
 	NodeUtility::CreateBackupFile(apipath);
@@ -427,12 +418,7 @@ int NodeSetupCommand::SetupNode(const boost::program_options::variables_map& vm,
 
 	Log(LogInformation, "cli", "Generating zone and object configuration.");
 
-	std::vector<String> globalZones;
-
-	globalZones.push_back("global-templates");
-	globalZones.push_back("director-global");
-
-	NodeUtility::GenerateNodeIcingaConfig(vm["endpoint"].as<std::vector<std::string> >(), globalZones);
+	NodeUtility::GenerateNodeIcingaConfig(vm["endpoint"].as<std::vector<std::string> >(), { "global-templates", "director-global" });
 
 	/* update constants.conf with NodeName = CN */
 	if (cn != Utility::GetFQDN()) {

lib/cli/nodewizardcommand.cpp

@@ -303,7 +303,7 @@ wizard_endpoint_loop_start:
 		    << "' on file '" << nodeKey << "'. Verify it yourself!";
 	}
 
-	boost::shared_ptr<X509> trustedParentCert;
+	std::shared_ptr<X509> trustedParentCert;
 
 	/* Check whether we should connect to the parent node and present its trusted certificate. */
 	if (connectToParent) {
@@ -457,15 +457,11 @@ wizard_ticket:
 	/* disable the notifications feature on client nodes */
 	Log(LogInformation, "cli", "Disabling the Notification feature.");
 
-	std::vector<std::string> disable;
-	disable.push_back("notification");
-	FeatureUtility::DisableFeatures(disable);
+	FeatureUtility::DisableFeatures({ "notification" });
 
 	Log(LogInformation, "cli", "Enabling the ApiListener feature.");
 
-	std::vector<std::string> enable;
-	enable.push_back("api");
-	FeatureUtility::EnableFeatures(enable);
+	FeatureUtility::EnableFeatures({ "api" });
 
 	String apiConfPath = FeatureUtility::GetFeaturesAvailablePath() + "/api.conf";
 	NodeUtility::CreateBackupFile(apiConfPath);
@@ -503,12 +499,7 @@ wizard_ticket:
 	/* apilistener config */
 	Log(LogInformation, "cli", "Generating local zones.conf.");
 
-	std::vector<String> globalZones;
-
-	globalZones.push_back("global-templates");
-	globalZones.push_back("director-global");
-
-	NodeUtility::GenerateNodeIcingaConfig(endpoints, globalZones);
+	NodeUtility::GenerateNodeIcingaConfig(endpoints, { "global-templates", "director-global" });
 
 	if (cn != Utility::GetFQDN()) {
 		Log(LogWarning, "cli")
@@ -604,12 +595,7 @@ int NodeWizardCommand::MasterSetup(void) const
 	else
 		std::cout << "'api' feature already enabled.\n";
 
-	std::vector<String> globalZones;
-
-	globalZones.push_back("global-templates");
-	globalZones.push_back("director-global");
-
-	NodeUtility::GenerateNodeMasterIcingaConfig(globalZones);
+	NodeUtility::GenerateNodeMasterIcingaConfig({ "global-templates", "director-global" });
 
 	/* apilistener config */
 	std::cout << ConsoleColorTag(Console_Bold)

lib/cli/pkisavecertcommand.cpp

@@ -85,7 +85,7 @@ int PKISaveCertCommand::Run(const boost::program_options::variables_map& vm, con
 	Log(LogInformation, "cli")
 	    << "Retrieving X.509 certificate for '" << host << ":" << port << "'.";
 
-	boost::shared_ptr<X509> cert = PkiUtility::FetchCert(host, port);
+	std::shared_ptr<X509> cert = PkiUtility::FetchCert(host, port);
 
 	if (!cert) {
 		Log(LogCritical, "cli", "Failed to fetch certificate from host.");

lib/cli/troubleshootcommand.cpp

@@ -375,8 +375,8 @@ bool TroubleshootCommand::PrintCrashReports(InfoLog& log)
 	String bestFilename;
 
 	try {
-		Utility::Glob(spath, std::bind(&GetLatestReport, _1, boost::ref(bestTimestamp),
-		    boost::ref(bestFilename)), GlobFile);
+		Utility::Glob(spath, std::bind(&GetLatestReport, _1, std::ref(bestTimestamp),
+		    std::ref(bestFilename)), GlobFile);
 	}
 #ifdef _WIN32
 	catch (win32_error &ex) {
@@ -444,10 +444,7 @@ bool TroubleshootCommand::PrintFile(InfoLog& log, const String& path)
 
 bool TroubleshootCommand::CheckConfig(void)
 {
-	std::vector<std::string> configs;
-	configs.push_back(Application::GetSysconfDir() + "/icinga2/icinga2.conf");
-
-	return DaemonUtility::ValidateConfigFiles(configs, Application::GetObjectsPath());
+	return DaemonUtility::ValidateConfigFiles({ Application::GetSysconfDir() + "/icinga2/icinga2.conf" }, Application::GetObjectsPath());
 }
 
 //print is supposed allow the user to print the object file

lib/compat/externalcommandlistener.cpp

@@ -54,7 +54,7 @@ void ExternalCommandListener::Start(bool runtimeCreated)
 	    << "'" << GetName() << "' started.";
 
 #ifndef _WIN32
-	m_CommandThread = boost::thread(std::bind(&ExternalCommandListener::CommandPipeThread, this, GetCommandPath()));
+	m_CommandThread = std::thread(std::bind(&ExternalCommandListener::CommandPipeThread, this, GetCommandPath()));
 	m_CommandThread.detach();
 #endif /* _WIN32 */
 }

lib/compat/externalcommandlistener.hpp

@@ -24,7 +24,7 @@
 #include "base/objectlock.hpp"
 #include "base/timer.hpp"
 #include "base/utility.hpp"
-#include <boost/thread/thread.hpp>
+#include <thread>
 #include <iostream>
 
 namespace icinga
@@ -47,7 +47,7 @@ protected:
 
 private:
 #ifndef _WIN32
-	boost::thread m_CommandThread;
+	std::thread m_CommandThread;
 
 	void CommandPipeThread(const String& commandPath);
 #endif /* _WIN32 */

lib/compat/statusdatawriter.cpp

@@ -634,8 +634,8 @@ void StatusDataWriter::UpdateObjectsCache(void)
 		for (const Service::Ptr& service : sg->GetMembers()) {
 			Host::Ptr host = service->GetHost();
 
-			sglist.push_back(host->GetName());
-			sglist.push_back(service->GetShortName());
+			sglist.emplace_back(host->GetName());
+			sglist.emplace_back(service->GetShortName());
 		}
 
 		DumpStringList(tempobjectfp, sglist);
@@ -734,15 +734,15 @@ void StatusDataWriter::UpdateObjectsCache(void)
 		int state_filter = dep->GetStateFilter();
 		std::vector<String> failure_criteria;
 		if (state_filter & StateFilterOK || state_filter & StateFilterUp)
-			failure_criteria.push_back("o");
+			failure_criteria.emplace_back("o");
 		if (state_filter & StateFilterWarning)
-			failure_criteria.push_back("w");
+			failure_criteria.emplace_back("w");
 		if (state_filter & StateFilterCritical)
-			failure_criteria.push_back("c");
+			failure_criteria.emplace_back("c");
 		if (state_filter & StateFilterUnknown)
-			failure_criteria.push_back("u");
+			failure_criteria.emplace_back("u");
 		if (state_filter & StateFilterDown)
-			failure_criteria.push_back("d");
+			failure_criteria.emplace_back("d");
 
 		String criteria = boost::algorithm::join(failure_criteria, ",");
 

lib/compat/statusdatawriter.hpp

@@ -28,7 +28,6 @@
 #include "icinga/compatutility.hpp"
 #include "base/timer.hpp"
 #include "base/utility.hpp"
-#include <boost/thread/thread.hpp>
 #include <iostream>
 
 namespace icinga

lib/config/activationcontext.hpp

@@ -49,7 +49,7 @@ private:
 class I2_CONFIG_API ActivationScope
 {
 public:
-	ActivationScope(const ActivationContext::Ptr& context = ActivationContext::Ptr());
+	ActivationScope(const ActivationContext::Ptr& context = nullptr);
 	~ActivationScope(void);
 
 	ActivationContext::Ptr GetContext(void) const;

lib/config/applyrule.cpp

@@ -26,8 +26,8 @@ using namespace icinga;
 ApplyRule::RuleMap ApplyRule::m_Rules;
 ApplyRule::TypeMap ApplyRule::m_Types;
 
-ApplyRule::ApplyRule(const String& targetType, const String& name, const boost::shared_ptr<Expression>& expression,
-    const boost::shared_ptr<Expression>& filter, const String& package, const String& fkvar, const String& fvvar, const boost::shared_ptr<Expression>& fterm,
+ApplyRule::ApplyRule(const String& targetType, const String& name, const std::shared_ptr<Expression>& expression,
+    const std::shared_ptr<Expression>& filter, const String& package, const String& fkvar, const String& fvvar, const std::shared_ptr<Expression>& fterm,
     bool ignoreOnError, const DebugInfo& di, const Dictionary::Ptr& scope)
 	: m_TargetType(targetType), m_Name(name), m_Expression(expression), m_Filter(filter), m_Package(package), m_FKVar(fkvar),
 	  m_FVVar(fvvar), m_FTerm(fterm), m_IgnoreOnError(ignoreOnError), m_DebugInfo(di), m_Scope(scope), m_HasMatches(false)
@@ -43,12 +43,12 @@ String ApplyRule::GetName(void) const
 	return m_Name;
 }
 
-boost::shared_ptr<Expression> ApplyRule::GetExpression(void) const
+std::shared_ptr<Expression> ApplyRule::GetExpression(void) const
 {
 	return m_Expression;
 }
 
-boost::shared_ptr<Expression> ApplyRule::GetFilter(void) const
+std::shared_ptr<Expression> ApplyRule::GetFilter(void) const
 {
 	return m_Filter;
 }
@@ -68,7 +68,7 @@ String ApplyRule::GetFVVar(void) const
 	return m_FVVar;
 }
 
-boost::shared_ptr<Expression> ApplyRule::GetFTerm(void) const
+std::shared_ptr<Expression> ApplyRule::GetFTerm(void) const
 {
 	return m_FTerm;
 }
@@ -89,8 +89,8 @@ Dictionary::Ptr ApplyRule::GetScope(void) const
 }
 
 void ApplyRule::AddRule(const String& sourceType, const String& targetType, const String& name,
-    const boost::shared_ptr<Expression>& expression, const boost::shared_ptr<Expression>& filter, const String& package, const String& fkvar,
-    const String& fvvar, const boost::shared_ptr<Expression>& fterm, bool ignoreOnError, const DebugInfo& di, const Dictionary::Ptr& scope)
+    const std::shared_ptr<Expression>& expression, const std::shared_ptr<Expression>& filter, const String& package, const String& fkvar,
+    const String& fvvar, const std::shared_ptr<Expression>& fterm, bool ignoreOnError, const DebugInfo& di, const Dictionary::Ptr& scope)
 {
 	m_Rules[sourceType].push_back(ApplyRule(targetType, name, expression, filter, package, fkvar, fvvar, fterm, ignoreOnError, di, scope));
 }

lib/config/applyrule.hpp

@@ -38,12 +38,12 @@ public:
 
 	String GetTargetType(void) const;
 	String GetName(void) const;
-	boost::shared_ptr<Expression> GetExpression(void) const;
-	boost::shared_ptr<Expression> GetFilter(void) const;
+	std::shared_ptr<Expression> GetExpression(void) const;
+	std::shared_ptr<Expression> GetFilter(void) const;
 	String GetPackage(void) const;
 	String GetFKVar(void) const;
 	String GetFVVar(void) const;
-	boost::shared_ptr<Expression> GetFTerm(void) const;
+	std::shared_ptr<Expression> GetFTerm(void) const;
 	bool GetIgnoreOnError(void) const;
 	DebugInfo GetDebugInfo(void) const;
 	Dictionary::Ptr GetScope(void) const;
@@ -52,8 +52,8 @@ public:
 
 	bool EvaluateFilter(ScriptFrame& frame) const;
 
-	static void AddRule(const String& sourceType, const String& targetType, const String& name, const boost::shared_ptr<Expression>& expression,
-	    const boost::shared_ptr<Expression>& filter, const String& package, const String& fkvar, const String& fvvar, const boost::shared_ptr<Expression>& fterm,
+	static void AddRule(const String& sourceType, const String& targetType, const String& name, const std::shared_ptr<Expression>& expression,
+	    const std::shared_ptr<Expression>& filter, const String& package, const String& fkvar, const String& fvvar, const std::shared_ptr<Expression>& fterm,
 	    bool ignoreOnError, const DebugInfo& di, const Dictionary::Ptr& scope);
 	static std::vector<ApplyRule>& GetRules(const String& type);
 
@@ -67,12 +67,12 @@ public:
 private:
 	String m_TargetType;
 	String m_Name;
-	boost::shared_ptr<Expression> m_Expression;
-	boost::shared_ptr<Expression> m_Filter;
+	std::shared_ptr<Expression> m_Expression;
+	std::shared_ptr<Expression> m_Filter;
 	String m_Package;
 	String m_FKVar;
 	String m_FVVar;
-	boost::shared_ptr<Expression> m_FTerm;
+	std::shared_ptr<Expression> m_FTerm;
 	bool m_IgnoreOnError;
 	DebugInfo m_DebugInfo;
 	Dictionary::Ptr m_Scope;
@@ -81,8 +81,8 @@ private:
 	static TypeMap m_Types;
 	static RuleMap m_Rules;
 
-	ApplyRule(const String& targetType, const String& name, const boost::shared_ptr<Expression>& expression,
-	    const boost::shared_ptr<Expression>& filter, const String& package, const String& fkvar, const String& fvvar, const boost::shared_ptr<Expression>& fterm,
+	ApplyRule(const String& targetType, const String& name, const std::shared_ptr<Expression>& expression,
+	    const std::shared_ptr<Expression>& filter, const String& package, const String& fkvar, const String& fvvar, const std::shared_ptr<Expression>& fterm,
 	    bool ignoreOnError, const DebugInfo& di, const Dictionary::Ptr& scope);
 };
 

lib/config/config_parser.yy

@@ -328,13 +328,13 @@ lterm_items_inner: lterm %dprec 2
 	{
 		$$ = new std::vector<std::pair<Expression *, EItemInfo> >();
 		EItemInfo info = { true, @1 };
-		$$->push_back(std::make_pair($1, info));
+		$$->emplace_back($1, info);
 	}
 	| rterm_no_side_effect
 	{
 		$$ = new std::vector<std::pair<Expression *, EItemInfo> >();
 		EItemInfo info = { false, @1 };
-		$$->push_back(std::make_pair($1, info));
+		$$->emplace_back($1, info);
 	}
 	| lterm_items_inner sep lterm %dprec 1
 	{
@@ -345,7 +345,7 @@ lterm_items_inner: lterm %dprec 2
 
 		if ($3) {
 			EItemInfo info = { true, @3 };
-			$$->push_back(std::make_pair($3, info));
+			$$->emplace_back($3, info);
 		}
 	}
 	| lterm_items_inner sep rterm_no_side_effect %dprec 1
@@ -357,7 +357,7 @@ lterm_items_inner: lterm %dprec 2
 
 		if ($3) {
 			EItemInfo info = { false, @3 };
-			$$->push_back(std::make_pair($3, info));
+			$$->emplace_back($3, info);
 		}
 	}
 	;

lib/config/configcompiler.cpp

@@ -155,7 +155,7 @@ Expression *ConfigCompiler::HandleInclude(const String& relativeBase, const Stri
 
 	std::vector<Expression *> expressions;
 
-	if (!Utility::Glob(includePath, std::bind(&ConfigCompiler::CollectIncludes, boost::ref(expressions), _1, zone, package), GlobFile) && includePath.FindFirstOf("*?") == String::NPos) {
+	if (!Utility::Glob(includePath, std::bind(&ConfigCompiler::CollectIncludes, std::ref(expressions), _1, zone, package), GlobFile) && includePath.FindFirstOf("*?") == String::NPos) {
 		std::ostringstream msgbuf;
 		msgbuf << "Include file '" + path + "' does not exist";
 		BOOST_THROW_EXCEPTION(ScriptError(msgbuf.str(), debuginfo));
@@ -185,7 +185,7 @@ Expression *ConfigCompiler::HandleIncludeRecursive(const String& relativeBase, c
 		ppath = relativeBase + "/" + path;
 
 	std::vector<Expression *> expressions;
-	Utility::GlobRecursive(ppath, pattern, std::bind(&ConfigCompiler::CollectIncludes, boost::ref(expressions), _1, zone, package), GlobFile);
+	Utility::GlobRecursive(ppath, pattern, std::bind(&ConfigCompiler::CollectIncludes, std::ref(expressions), _1, zone, package), GlobFile);
 
 	DictExpression *dict = new DictExpression(expressions);
 	dict->MakeInline();
@@ -205,7 +205,7 @@ void ConfigCompiler::HandleIncludeZone(const String& relativeBase, const String&
 
 	RegisterZoneDir(tag, ppath, zoneName);
 
-	Utility::GlobRecursive(ppath, pattern, std::bind(&ConfigCompiler::CollectIncludes, boost::ref(expressions), _1, zoneName, package), GlobFile);
+	Utility::GlobRecursive(ppath, pattern, std::bind(&ConfigCompiler::CollectIncludes, std::ref(expressions), _1, zoneName, package), GlobFile);
 }
 
 /**
@@ -231,7 +231,7 @@ Expression *ConfigCompiler::HandleIncludeZones(const String& relativeBase, const
 	}
 
 	std::vector<Expression *> expressions;
-	Utility::Glob(ppath + "/*", std::bind(&ConfigCompiler::HandleIncludeZone, newRelativeBase, tag, _1, pattern, package, boost::ref(expressions)), GlobDirectory);
+	Utility::Glob(ppath + "/*", std::bind(&ConfigCompiler::HandleIncludeZone, newRelativeBase, tag, _1, pattern, package, std::ref(expressions)), GlobDirectory);
 	return new DictExpression(expressions);
 }
 

lib/config/configcompiler.hpp

@@ -26,6 +26,7 @@
 #include "base/registry.hpp"
 #include "base/initialize.hpp"
 #include "base/singleton.hpp"
+#include <future>
 #include <iostream>
 #include <stack>
 
@@ -127,7 +128,7 @@ public:
 	static bool HasZoneConfigAuthority(const String& zoneName);
 
 private:
-	boost::promise<boost::shared_ptr<Expression> > m_Promise;
+	std::promise<std::shared_ptr<Expression> > m_Promise;
 
 	String m_Path;
 	std::istream *m_Input;

lib/config/configitem.cpp

@@ -60,8 +60,8 @@ REGISTER_SCRIPTFUNCTION_NS(Internal, run_with_activation_context, &ConfigItem::R
  * @param debuginfo Debug information.
  */
 ConfigItem::ConfigItem(const Type::Ptr& type, const String& name,
-    bool abstract, const boost::shared_ptr<Expression>& exprl,
-    const boost::shared_ptr<Expression>& filter, bool defaultTmpl, bool ignoreOnError,
+    bool abstract, const std::shared_ptr<Expression>& exprl,
+    const std::shared_ptr<Expression>& filter, bool defaultTmpl, bool ignoreOnError,
     const DebugInfo& debuginfo, const Dictionary::Ptr& scope,
     const String& zone, const String& package)
 	: m_Type(type), m_Name(name), m_Abstract(abstract),
@@ -137,7 +137,7 @@ ConfigObject::Ptr ConfigItem::GetObject(void) const
  *
  * @returns The expression list.
  */
-boost::shared_ptr<Expression> ConfigItem::GetExpression(void) const
+std::shared_ptr<Expression> ConfigItem::GetExpression(void) const
 {
 	return m_Expression;
 }
@@ -147,7 +147,7 @@ boost::shared_ptr<Expression> ConfigItem::GetExpression(void) const
 *
 * @returns The filter expression.
 */
-boost::shared_ptr<Expression> ConfigItem::GetFilter(void) const
+std::shared_ptr<Expression> ConfigItem::GetFilter(void) const
 {
 	return m_Filter;
 }
@@ -185,7 +185,7 @@ ConfigObject::Ptr ConfigItem::Commit(bool discard)
 		BOOST_THROW_EXCEPTION(ScriptError("Type '" + GetType() + "' does not exist.", m_DebugInfo));
 
 	if (IsAbstract())
-		return ConfigObject::Ptr();
+		return nullptr;
 
 	ConfigObject::Ptr dobj = static_pointer_cast<ConfigObject>(type->Instantiate(std::vector<Value>()));
 
@@ -211,7 +211,7 @@ ConfigObject::Ptr ConfigItem::Commit(bool discard)
 				m_IgnoredItems.push_back(m_DebugInfo.Path);
 			}
 
-			return ConfigObject::Ptr();
+			return nullptr;
 		}
 
 		throw;
@@ -263,7 +263,7 @@ ConfigObject::Ptr ConfigItem::Commit(bool discard)
 				m_IgnoredItems.push_back(m_DebugInfo.Path);
 			}
 
-			return ConfigObject::Ptr();
+			return nullptr;
 		}
 
 		ex.SetDebugHint(dhint);
@@ -282,7 +282,7 @@ ConfigObject::Ptr ConfigItem::Commit(bool discard)
 				m_IgnoredItems.push_back(m_DebugInfo.Path);
 			}
 
-			return ConfigObject::Ptr();
+			return nullptr;
 		}
 
 		throw;
@@ -378,12 +378,12 @@ ConfigItem::Ptr ConfigItem::GetByTypeAndName(const Type::Ptr& type, const String
 	auto it = m_Items.find(type);
 
 	if (it == m_Items.end())
-		return ConfigItem::Ptr();
+		return nullptr;
 
 	auto it2 = it->second.find(name);
 
 	if (it2 == it->second.end())
-		return ConfigItem::Ptr();
+		return nullptr;
 
 	return it2->second;
 }
@@ -404,7 +404,7 @@ bool ConfigItem::CommitNewItems(const ActivationContext::Ptr& context, WorkQueue
 				if (kv2.second->m_ActivationContext != context)
 					continue;
 
-				items.push_back(std::make_pair(kv2.second, false));
+				items.emplace_back(kv2.second, false);
 			}
 		}
 
@@ -419,7 +419,7 @@ bool ConfigItem::CommitNewItems(const ActivationContext::Ptr& context, WorkQueue
 			if (item->m_Abstract || item->m_Object)
 				continue;
 
-			items.push_back(std::make_pair(item, true));
+			items.emplace_back(item, true);
 		}
 
 		m_UnnamedItems.swap(newUnnamedItems);

lib/config/configitem.hpp

@@ -41,8 +41,8 @@ public:
 	DECLARE_PTR_TYPEDEFS(ConfigItem);
 
 	ConfigItem(const Type::Ptr& type, const String& name, bool abstract,
-	    const boost::shared_ptr<Expression>& exprl,
-	    const boost::shared_ptr<Expression>& filter,
+	    const std::shared_ptr<Expression>& exprl,
+	    const std::shared_ptr<Expression>& filter,
 	    bool defaultTmpl, bool ignoreOnError, const DebugInfo& debuginfo,
 	    const Dictionary::Ptr& scope, const String& zone,
 	    const String& package);
@@ -55,8 +55,8 @@ public:
 
 	std::vector<ConfigItem::Ptr> GetParents(void) const;
 
-	boost::shared_ptr<Expression> GetExpression(void) const;
-	boost::shared_ptr<Expression> GetFilter(void) const;
+	std::shared_ptr<Expression> GetExpression(void) const;
+	std::shared_ptr<Expression> GetFilter(void) const;
 
 	void Register(void);
 	void Unregister(void);
@@ -84,8 +84,8 @@ private:
 	String m_Name; /**< The name. */
 	bool m_Abstract; /**< Whether this is a template. */
 
-	boost::shared_ptr<Expression> m_Expression;
-	boost::shared_ptr<Expression> m_Filter;
+	std::shared_ptr<Expression> m_Expression;
+	std::shared_ptr<Expression> m_Filter;
 	bool m_DefaultTmpl;
 	bool m_IgnoreOnError;
 	DebugInfo m_DebugInfo; /**< Debug information. */

lib/config/configitembuilder.cpp

@@ -20,7 +20,6 @@
 #include "config/configitembuilder.hpp"
 #include "base/configtype.hpp"
 #include <sstream>
-#include <boost/smart_ptr/make_shared.hpp>
 
 using namespace icinga;
 
@@ -74,7 +73,7 @@ void ConfigItemBuilder::AddExpression(Expression *expr)
 	m_Expressions.push_back(expr);
 }
 
-void ConfigItemBuilder::SetFilter(const boost::shared_ptr<Expression>& filter)
+void ConfigItemBuilder::SetFilter(const std::shared_ptr<Expression>& filter)
 {
 	m_Filter = filter;
 }
@@ -138,7 +137,7 @@ ConfigItem::Ptr ConfigItemBuilder::Compile(void)
 	}
 #endif /* I2_DEBUG */
 
-	boost::shared_ptr<DictExpression> exprl = boost::make_shared<DictExpression>(exprs, m_DebugInfo);
+	std::shared_ptr<DictExpression> exprl = std::make_shared<DictExpression>(exprs, m_DebugInfo);
 	exprl->MakeInline();
 
 	return new ConfigItem(m_Type, m_Name, m_Abstract, exprl, m_Filter,

lib/config/configitembuilder.hpp

@@ -52,7 +52,7 @@ public:
 	void SetIgnoreOnError(bool ignoreOnError);
 
 	void AddExpression(Expression *expr);
-	void SetFilter(const boost::shared_ptr<Expression>& filter);
+	void SetFilter(const std::shared_ptr<Expression>& filter);
 
 	ConfigItem::Ptr Compile(void);
 
@@ -61,7 +61,7 @@ private:
 	String m_Name; /**< The name. */
 	bool m_Abstract; /**< Whether the item is abstract. */
 	std::vector<Expression *> m_Expressions; /**< Expressions for this item. */
-	boost::shared_ptr<Expression> m_Filter; /**< Filter expression. */
+	std::shared_ptr<Expression> m_Filter; /**< Filter expression. */
 	DebugInfo m_DebugInfo; /**< Debug information. */
 	Dictionary::Ptr m_Scope; /**< variable scope. */
 	String m_Zone; /**< The zone. */

lib/config/expression.hpp

@@ -28,7 +28,6 @@
 #include "base/exception.hpp"
 #include "base/scriptframe.hpp"
 #include "base/convert.hpp"
-#include <boost/thread/future.hpp>
 #include <map>
 
 namespace icinga
@@ -37,7 +36,7 @@ namespace icinga
 struct DebugHint
 {
 public:
-	DebugHint(const Dictionary::Ptr& hints = Dictionary::Ptr())
+	DebugHint(const Dictionary::Ptr& hints = nullptr)
 		: m_Hints(hints)
 	{ }
 
@@ -217,7 +216,7 @@ I2_CONFIG_API Expression *MakeIndexer(ScopeSpecifier scopeSpec, const String& in
 class I2_CONFIG_API OwnedExpression : public Expression
 {
 public:
-	OwnedExpression(const boost::shared_ptr<Expression>& expression)
+	OwnedExpression(const std::shared_ptr<Expression>& expression)
 		: m_Expression(expression)
 	{ }
 
@@ -233,7 +232,7 @@ protected:
 	}
 
 private:
-	boost::shared_ptr<Expression> m_Expression;
+	std::shared_ptr<Expression> m_Expression;
 };
 
 class I2_CONFIG_API LiteralExpression : public Expression
@@ -838,7 +837,7 @@ private:
 	String m_Name;
 	std::vector<String> m_Args;
 	std::map<String, Expression *> *m_ClosedVars;
-	boost::shared_ptr<Expression> m_Expression;
+	std::shared_ptr<Expression> m_Expression;
 };
 
 class I2_CONFIG_API ApplyExpression : public DebuggableExpression
@@ -875,14 +874,14 @@ private:
 	String m_Type;
 	String m_Target;
 	Expression *m_Name;
-	boost::shared_ptr<Expression> m_Filter;
+	std::shared_ptr<Expression> m_Filter;
 	String m_Package;
 	String m_FKVar;
 	String m_FVVar;
-	boost::shared_ptr<Expression> m_FTerm;
+	std::shared_ptr<Expression> m_FTerm;
 	bool m_IgnoreOnError;
 	std::map<String, Expression *> *m_ClosedVars;
-	boost::shared_ptr<Expression> m_Expression;
+	std::shared_ptr<Expression> m_Expression;
 };
 
 class I2_CONFIG_API ObjectExpression : public DebuggableExpression
@@ -917,13 +916,13 @@ private:
 	bool m_Abstract;
 	Expression *m_Type;
 	Expression *m_Name;
-	boost::shared_ptr<Expression> m_Filter;
+	std::shared_ptr<Expression> m_Filter;
 	String m_Zone;
 	String m_Package;
 	bool m_DefaultTmpl;
 	bool m_IgnoreOnError;
 	std::map<String, Expression *> *m_ClosedVars;
-	boost::shared_ptr<Expression> m_Expression;
+	std::shared_ptr<Expression> m_Expression;
 };
 	
 class I2_CONFIG_API ForExpression : public DebuggableExpression

lib/config/vmops.hpp

@@ -33,7 +33,6 @@
 #include "base/exception.hpp"
 #include "base/convert.hpp"
 #include "base/objectlock.hpp"
-#include <boost/smart_ptr/make_shared.hpp>
 #include <map>
 #include <vector>
 
@@ -103,14 +102,14 @@ public:
 	static inline Value FunctionCall(ScriptFrame& frame, const Value& self, const Function::Ptr& func, const std::vector<Value>& arguments)
 	{
 		if (!self.IsEmpty() || self.IsString())
-			return func->Invoke(self, arguments);
+			return func->InvokeThis(self, arguments);
 		else
 			return func->Invoke(arguments);
 
 	}
 
 	static inline Value NewFunction(ScriptFrame& frame, const String& name, const std::vector<String>& argNames,
-	    std::map<String, Expression *> *closedVars, const boost::shared_ptr<Expression>& expression)
+	    std::map<String, Expression *> *closedVars, const std::shared_ptr<Expression>& expression)
 	{
 		auto evaluatedClosedVars = EvaluateClosedVars(frame, closedVars);
 
@@ -132,9 +131,9 @@ public:
 		return new Function(name, wrapper, argNames);
 	}
 
-	static inline Value NewApply(ScriptFrame& frame, const String& type, const String& target, const String& name, const boost::shared_ptr<Expression>& filter,
-		const String& package, const String& fkvar, const String& fvvar, const boost::shared_ptr<Expression>& fterm, std::map<String, Expression *> *closedVars,
-		bool ignoreOnError, const boost::shared_ptr<Expression>& expression, const DebugInfo& debugInfo = DebugInfo())
+	static inline Value NewApply(ScriptFrame& frame, const String& type, const String& target, const String& name, const std::shared_ptr<Expression>& filter,
+		const String& package, const String& fkvar, const String& fvvar, const std::shared_ptr<Expression>& fterm, std::map<String, Expression *> *closedVars,
+		bool ignoreOnError, const std::shared_ptr<Expression>& expression, const DebugInfo& debugInfo = DebugInfo())
 	{
 		ApplyRule::AddRule(type, target, name, expression, filter, package, fkvar,
 		    fvvar, fterm, ignoreOnError, debugInfo, EvaluateClosedVars(frame, closedVars));
@@ -142,8 +141,8 @@ public:
 		return Empty;
 	}
 
-	static inline Value NewObject(ScriptFrame& frame, bool abstract, const Type::Ptr& type, const String& name, const boost::shared_ptr<Expression>& filter,
-		const String& zone, const String& package, bool defaultTmpl, bool ignoreOnError, std::map<String, Expression *> *closedVars, const boost::shared_ptr<Expression>& expression, const DebugInfo& debugInfo = DebugInfo())
+	static inline Value NewObject(ScriptFrame& frame, bool abstract, const Type::Ptr& type, const String& name, const std::shared_ptr<Expression>& filter,
+		const String& zone, const String& package, bool defaultTmpl, bool ignoreOnError, std::map<String, Expression *> *closedVars, const std::shared_ptr<Expression>& expression, const DebugInfo& debugInfo = DebugInfo())
 	{
 		ConfigItemBuilder::Ptr item = new ConfigItemBuilder(debugInfo);
 
@@ -153,7 +152,7 @@ public:
 			NameComposer *nc = dynamic_cast<NameComposer *>(type.get());
 
 			if (nc)
-				checkName = nc->MakeName(name, Dictionary::Ptr());
+				checkName = nc->MakeName(name, nullptr);
 		}
 
 		if (!checkName.IsEmpty()) {

lib/db_ido/commanddbobject.cpp

@@ -45,5 +45,5 @@ Dictionary::Ptr CommandDbObject::GetConfigFields(void) const
 
 Dictionary::Ptr CommandDbObject::GetStatusFields(void) const
 {
-	return Dictionary::Ptr();
+	return nullptr;
 }

lib/db_ido/dbconnection.cpp

@@ -181,13 +181,12 @@ void DbConnection::UpdateProgramStatus(void)
 	query1.Fields->Set("process_performance_data", (IcingaApplication::GetInstance()->GetEnablePerfdata() ? 1 : 0));
 	query1.WhereCriteria = new Dictionary();
 	query1.WhereCriteria->Set("instance_id", 0);  /* DbConnection class fills in real ID */
-
 	query1.Priority = PriorityHigh;
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	DbQuery query2;
 	query2.Type = DbQueryNewTransaction;
-	queries.push_back(query2);
+	queries.emplace_back(std::move(query2));
 
 	DbObject::OnMultipleQueries(queries);
 

lib/db_ido/dbevents.cpp

@@ -383,8 +383,7 @@ void DbEvents::AddCommentInternal(std::vector<DbQuery>& queries, const Comment::
 	}
 	query1.Category = DbCatComment;
 	query1.Fields = fields1;
-
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 }
 
 void DbEvents::RemoveComment(const Comment::Ptr& comment)
@@ -409,7 +408,7 @@ void DbEvents::RemoveCommentInternal(std::vector<DbQuery>& queries, const Commen
 	query1.WhereCriteria->Set("object_id", checkable);
 	query1.WhereCriteria->Set("entry_time", DbValue::FromTimestamp(entry_time));
 	query1.WhereCriteria->Set("name", comment->GetName());
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	/* History - update deletion time for service/host */
 	double now = Utility::GetTime();
@@ -429,7 +428,7 @@ void DbEvents::RemoveCommentInternal(std::vector<DbQuery>& queries, const Commen
 	query2.WhereCriteria->Set("object_id", checkable);
 	query2.WhereCriteria->Set("entry_time", DbValue::FromTimestamp(entry_time));
 	query2.WhereCriteria->Set("name", comment->GetName());
-	queries.push_back(query2);
+	queries.emplace_back(std::move(query2));
 }
 
 /* downtimes */
@@ -526,8 +525,7 @@ void DbEvents::AddDowntimeInternal(std::vector<DbQuery>& queries, const Downtime
 
 	query1.Category = DbCatDowntime;
 	query1.Fields = fields1;
-
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	/* host/service status */
 	if (!historical) {
@@ -558,8 +556,7 @@ void DbEvents::AddDowntimeInternal(std::vector<DbQuery>& queries, const Downtime
 			query2.WhereCriteria->Set("host_object_id", host);
 
 		query2.WhereCriteria->Set("instance_id", 0); /* DbConnection class fills in real ID */
-
-		queries.push_back(query2);
+		queries.emplace_back(std::move(query2));
 	}
 }
 
@@ -587,7 +584,7 @@ void DbEvents::RemoveDowntimeInternal(std::vector<DbQuery>& queries, const Downt
 	query1.WhereCriteria->Set("scheduled_start_time", DbValue::FromTimestamp(downtime->GetStartTime()));
 	query1.WhereCriteria->Set("scheduled_end_time", DbValue::FromTimestamp(downtime->GetEndTime()));
 	query1.WhereCriteria->Set("name", downtime->GetName());
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	/* History - update actual_end_time, was_cancelled for service (and host in case) */
 	double now = Utility::GetTime();
@@ -616,8 +613,7 @@ void DbEvents::RemoveDowntimeInternal(std::vector<DbQuery>& queries, const Downt
 	query3.WhereCriteria->Set("scheduled_start_time", DbValue::FromTimestamp(downtime->GetStartTime()));
 	query3.WhereCriteria->Set("scheduled_end_time", DbValue::FromTimestamp(downtime->GetEndTime()));
 	query3.WhereCriteria->Set("name", downtime->GetName());
-
-	queries.push_back(query3);
+	queries.emplace_back(std::move(query3));
 
 	/* host/service status */
 	Host::Ptr host;
@@ -647,8 +643,7 @@ void DbEvents::RemoveDowntimeInternal(std::vector<DbQuery>& queries, const Downt
 		query4.WhereCriteria->Set("host_object_id", host);
 
 	query4.WhereCriteria->Set("instance_id", 0); /* DbConnection class fills in real ID */
-
-	queries.push_back(query4);
+	queries.emplace_back(std::move(query4));
 }
 
 void DbEvents::TriggerDowntime(const Downtime::Ptr& downtime)
@@ -908,7 +903,7 @@ void DbEvents::AddNotificationHistory(const Notification::Ptr& notification, con
 		fields2->Set("instance_id", 0); /* DbConnection class fills in real ID */
 
 		query2.Fields = fields2;
-		queries.push_back(query2);
+		queries.emplace_back(std::move(query2));
 	}
 
 	DbObject::OnMultipleQueries(queries);

lib/db_ido/dbobject.cpp

@@ -217,8 +217,7 @@ void DbObject::SendVarsConfigUpdateHeavy(void)
 	query1.Category = DbCatConfig;
 	query1.WhereCriteria = new Dictionary();
 	query1.WhereCriteria->Set("object_id", obj);
-
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	DbQuery query2;
 	query2.Table = "customvariablestatus";
@@ -226,8 +225,7 @@ void DbObject::SendVarsConfigUpdateHeavy(void)
 	query2.Category = DbCatConfig;
 	query2.WhereCriteria = new Dictionary();
 	query2.WhereCriteria->Set("object_id", obj);
-
-	queries.push_back(query2);
+	queries.emplace_back(std::move(query2));
 
 	Dictionary::Ptr vars = CompatUtility::GetCustomAttributeConfig(custom_var_object);
 
@@ -260,8 +258,7 @@ void DbObject::SendVarsConfigUpdateHeavy(void)
 			query3.Type = DbQueryInsert;
 			query3.Category = DbCatConfig;
 			query3.Fields = fields;
-
-			queries.push_back(query3);
+			queries.emplace_back(std::move(query3));
 		}
 	}
 
@@ -313,8 +310,7 @@ void DbObject::SendVarsStatusUpdate(void)
 			query.WhereCriteria = new Dictionary();
 			query.WhereCriteria->Set("object_id", obj);
 			query.WhereCriteria->Set("varname", kv.first);
-
-			queries.push_back(query);
+			queries.emplace_back(std::move(query));
 		}
 
 		OnMultipleQueries(queries);
@@ -358,7 +354,7 @@ DbObject::Ptr DbObject::GetOrCreateByObject(const ConfigObject::Ptr& object)
 	DbType::Ptr dbtype = DbType::GetByName(object->GetReflectionType()->GetName());
 
 	if (!dbtype)
-		return DbObject::Ptr();
+		return nullptr;
 
 	Service::Ptr service;
 	String name1, name2;

lib/db_ido/dbtype.cpp

@@ -68,7 +68,7 @@ DbType::Ptr DbType::GetByName(const String& name)
 	auto it = GetTypes().find(typeName);
 
 	if (it == GetTypes().end())
-		return DbType::Ptr();
+		return nullptr;
 
 	return it->second;
 }
@@ -82,7 +82,7 @@ DbType::Ptr DbType::GetByID(long tid)
 			return kv.second;
 	}
 
-	return DbType::Ptr();
+	return nullptr;
 }
 
 DbObject::Ptr DbType::GetOrCreateObjectByName(const String& name1, const String& name2)

lib/db_ido/hostdbobject.cpp

@@ -191,8 +191,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 	query1.Category = DbCatConfig;
 	query1.WhereCriteria = new Dictionary();
 	query1.WhereCriteria->Set("host_object_id", host);
-
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	if (groups) {
 		ObjectLock olock(groups);
@@ -211,8 +210,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 			query2.WhereCriteria->Set("instance_id", 0); /* DbConnection class fills in real ID */
 			query2.WhereCriteria->Set("hostgroup_id", DbValue::FromObjectInsertID(group));
 			query2.WhereCriteria->Set("host_object_id", host);
-
-			queries.push_back(query2);
+			queries.emplace_back(std::move(query2));
 		}
 	}
 
@@ -226,8 +224,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 	query2.Category = DbCatConfig;
 	query2.WhereCriteria = new Dictionary();
 	query2.WhereCriteria->Set(GetType()->GetTable() + "_id", DbValue::FromObjectInsertID(GetObject()));
-
-	queries.push_back(query2);
+	queries.emplace_back(std::move(query2));
 
 	/* parents */
 	for (const Checkable::Ptr& checkable : host->GetParents()) {
@@ -250,8 +247,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 		query1.Type = DbQueryInsert;
 		query1.Category = DbCatConfig;
 		query1.Fields = fields1;
-
-		queries.push_back(query1);
+		queries.emplace_back(std::move(query1));
 	}
 
 	DbObject::OnMultipleQueries(queries);
@@ -268,8 +264,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 	query3.Category = DbCatConfig;
 	query3.WhereCriteria = new Dictionary();
 	query3.WhereCriteria->Set("dependent_host_object_id", host);
-
-	queries.push_back(query3);
+	queries.emplace_back(std::move(query3));
 
 	for (const Dependency::Ptr& dep : host->GetDependencies()) {
 		Checkable::Ptr parent = dep->GetParent();
@@ -299,8 +294,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 		query2.Type = DbQueryInsert;
 		query2.Category = DbCatConfig;
 		query2.Fields = fields2;
-
-		queries.push_back(query2);
+		queries.emplace_back(std::move(query2));
 	}
 
 	DbObject::OnMultipleQueries(queries);
@@ -316,8 +310,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 	query4.Category = DbCatConfig;
 	query4.WhereCriteria = new Dictionary();
 	query4.WhereCriteria->Set("host_id", DbValue::FromObjectInsertID(host));
-
-	queries.push_back(query4);
+	queries.emplace_back(std::move(query4));
 
 	for (const User::Ptr& user : CompatUtility::GetCheckableNotificationUsers(host)) {
 		Log(LogDebug, "HostDbObject")
@@ -333,8 +326,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 		query_contact.Type = DbQueryInsert;
 		query_contact.Category = DbCatConfig;
 		query_contact.Fields = fields_contact;
-
-		queries.push_back(query_contact);
+		queries.emplace_back(std::move(query_contact));
 	}
 
 	DbObject::OnMultipleQueries(queries);
@@ -350,8 +342,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 	query5.Category = DbCatConfig;
 	query5.WhereCriteria = new Dictionary();
 	query5.WhereCriteria->Set("host_id", DbValue::FromObjectInsertID(host));
-
-	queries.push_back(query5);
+	queries.emplace_back(std::move(query5));
 
 	for (const UserGroup::Ptr& usergroup : CompatUtility::GetCheckableNotificationUserGroups(host)) {
 		Log(LogDebug, "HostDbObject")
@@ -367,8 +358,7 @@ void HostDbObject::OnConfigUpdateHeavy(void)
 		query_contact.Type = DbQueryInsert;
 		query_contact.Category = DbCatConfig;
 		query_contact.Fields = fields_contact;
-
-		queries.push_back(query_contact);
+		queries.emplace_back(std::move(query_contact));
 	}
 
 	DbObject::OnMultipleQueries(queries);

lib/db_ido/hostgroupdbobject.cpp

@@ -47,5 +47,5 @@ Dictionary::Ptr HostGroupDbObject::GetConfigFields(void) const
 
 Dictionary::Ptr HostGroupDbObject::GetStatusFields(void) const
 {
-	return Dictionary::Ptr();
+	return nullptr;
 }

lib/db_ido/idochecktask.cpp

@@ -46,10 +46,10 @@ void IdoCheckTask::ScriptFunc(const Checkable::Ptr& checkable, const CheckResult
 
 	MacroProcessor::ResolverList resolvers;
 	if (service)
-		resolvers.push_back(std::make_pair("service", service));
-	resolvers.push_back(std::make_pair("host", host));
-	resolvers.push_back(std::make_pair("command", commandObj));
-	resolvers.push_back(std::make_pair("icinga", IcingaApplication::GetInstance()));
+		resolvers.emplace_back("service", service);
+	resolvers.emplace_back("host", host);
+	resolvers.emplace_back("command", commandObj);
+	resolvers.emplace_back("icinga", IcingaApplication::GetInstance());
 
 	String idoType = MacroProcessor::ResolveMacros("$ido_type$", resolvers, checkable->GetLastCheckResult(),
 	    NULL, MacroProcessor::EscapeCallback(), resolvedMacros, useResolvedMacros);

lib/db_ido/servicedbobject.cpp

@@ -185,8 +185,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 	query1.Category = DbCatConfig;
 	query1.WhereCriteria = new Dictionary();
 	query1.WhereCriteria->Set("service_object_id", service);
-
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	if (groups) {
 		ObjectLock olock(groups);
@@ -205,8 +204,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 			query2.WhereCriteria->Set("instance_id", 0); /* DbConnection class fills in real ID */
 			query2.WhereCriteria->Set("servicegroup_id", DbValue::FromObjectInsertID(group));
 			query2.WhereCriteria->Set("service_object_id", service);
-
-			queries.push_back(query2);
+			queries.emplace_back(std::move(query2));
 		}
 	}
 
@@ -224,8 +222,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 	query2.Category = DbCatConfig;
 	query2.WhereCriteria = new Dictionary();
 	query2.WhereCriteria->Set("dependent_service_object_id", service);
-
-	queries.push_back(query2);
+	queries.emplace_back(std::move(query2));
 
 	for (const Dependency::Ptr& dep : service->GetDependencies()) {
 		Checkable::Ptr parent = dep->GetParent();
@@ -258,8 +255,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 		query1.Type = DbQueryInsert;
 		query1.Category = DbCatConfig;
 		query1.Fields = fields1;
-
-		queries.push_back(query1);
+		queries.emplace_back(std::move(query1));
 	}
 
 	DbObject::OnMultipleQueries(queries);
@@ -276,8 +272,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 	query3.Category = DbCatConfig;
 	query3.WhereCriteria = new Dictionary();
 	query3.WhereCriteria->Set("service_id", DbValue::FromObjectInsertID(service));
-
-	queries.push_back(query3);
+	queries.emplace_back(std::move(query3));
 
 	for (const User::Ptr& user : CompatUtility::GetCheckableNotificationUsers(service)) {
 		Log(LogDebug, "ServiceDbObject")
@@ -293,8 +288,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 		query_contact.Type = DbQueryInsert;
 		query_contact.Category = DbCatConfig;
 		query_contact.Fields = fields_contact;
-
-		queries.push_back(query_contact);
+		queries.emplace_back(std::move(query_contact));
 	}
 
 	DbObject::OnMultipleQueries(queries);
@@ -310,8 +304,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 	query4.Category = DbCatConfig;
 	query4.WhereCriteria = new Dictionary();
 	query4.WhereCriteria->Set("service_id", DbValue::FromObjectInsertID(service));
-
-	queries.push_back(query4);
+	queries.emplace_back(std::move(query4));
 
 	for (const UserGroup::Ptr& usergroup : CompatUtility::GetCheckableNotificationUserGroups(service)) {
 		Log(LogDebug, "ServiceDbObject")
@@ -327,8 +320,7 @@ void ServiceDbObject::OnConfigUpdateHeavy(void)
 		query_contact.Type = DbQueryInsert;
 		query_contact.Category = DbCatConfig;
 		query_contact.Fields = fields_contact;
-
-		queries.push_back(query_contact);
+		queries.emplace_back(std::move(query_contact));
 	}
 
 	DbObject::OnMultipleQueries(queries);

lib/db_ido/servicegroupdbobject.cpp

@@ -46,5 +46,5 @@ Dictionary::Ptr ServiceGroupDbObject::GetConfigFields(void) const
 
 Dictionary::Ptr ServiceGroupDbObject::GetStatusFields(void) const
 {
-	return Dictionary::Ptr();
+	return nullptr;
 }

lib/db_ido/userdbobject.cpp

@@ -94,8 +94,7 @@ void UserDbObject::OnConfigUpdateHeavy(void)
 	query1.Category = DbCatConfig;
 	query1.WhereCriteria = new Dictionary();
 	query1.WhereCriteria->Set("contact_object_id", user);
-
-	queries.push_back(query1);
+	queries.emplace_back(std::move(query1));
 
 	if (groups) {
 		ObjectLock olock(groups);
@@ -114,8 +113,7 @@ void UserDbObject::OnConfigUpdateHeavy(void)
 			query2.WhereCriteria->Set("instance_id", 0); /* DbConnection class fills in real ID */
 			query2.WhereCriteria->Set("contactgroup_id", DbValue::FromObjectInsertID(group));
 			query2.WhereCriteria->Set("contact_object_id", user);
-
-			queries.push_back(query2);
+			queries.emplace_back(std::move(query2));
 		}
 	}
 
@@ -129,8 +127,7 @@ void UserDbObject::OnConfigUpdateHeavy(void)
 	query2.Category = DbCatConfig;
 	query2.WhereCriteria = new Dictionary();
 	query2.WhereCriteria->Set("contact_id", DbValue::FromObjectInsertID(user));
-
-	queries.push_back(query2);
+	queries.emplace_back(std::move(query2));
 
 	Dictionary::Ptr vars = user->GetVars();
 
@@ -155,8 +152,7 @@ void UserDbObject::OnConfigUpdateHeavy(void)
 			query.Table = "contact_addresses";
 			query.Category = DbCatConfig;
 			query.Fields = fields;
-
-			queries.push_back(query);
+			queries.emplace_back(std::move(query));
 		}
 	}
 

lib/db_ido/usergroupdbobject.cpp

@@ -44,5 +44,5 @@ Dictionary::Ptr UserGroupDbObject::GetConfigFields(void) const
 
 Dictionary::Ptr UserGroupDbObject::GetStatusFields(void) const
 {
-	return Dictionary::Ptr();
+	return nullptr;
 }

lib/db_ido_mysql/idomysqlconnection.cpp

@@ -420,7 +420,7 @@ void IdoMysqlConnection::Reconnect(void)
 		SetObjectActive(dbobj, active);
 
 		if (active)
-			activeDbObjs.push_back(dbobj);
+			activeDbObjs.emplace_back(std::move(dbobj));
 	}
 
 	SetIDCacheValid(true);
@@ -489,7 +489,7 @@ void IdoMysqlConnection::AsyncQuery(const String& query, const std::function<voi
 	 * See https://github.com/Icinga/icinga2/issues/4603 for details.
 	 */
 	aq.Callback = callback;
-	m_AsyncQueries.push_back(aq);
+	m_AsyncQueries.emplace_back(std::move(aq));
 
 	if (m_AsyncQueries.size() > 25000) {
 		FinishAsyncQueries();
@@ -684,12 +684,12 @@ Dictionary::Ptr IdoMysqlConnection::FetchRow(const IdoMysqlResult& result)
 	row = mysql_fetch_row(result.get());
 
 	if (!row)
-		return Dictionary::Ptr();
+		return nullptr;
 
 	lengths = mysql_fetch_lengths(result.get());
 
 	if (!lengths)
-		return Dictionary::Ptr();
+		return nullptr;
 
 	Dictionary::Ptr dict = new Dictionary();
 

lib/db_ido_mysql/idomysqlconnection.hpp

@@ -29,7 +29,7 @@
 namespace icinga
 {
 
-typedef boost::shared_ptr<MYSQL_RES> IdoMysqlResult;
+typedef std::shared_ptr<MYSQL_RES> IdoMysqlResult;
 
 typedef std::function<void (const IdoMysqlResult&)> IdoAsyncCallback;
 

lib/db_ido_pgsql/idopgsqlconnection.cpp

@@ -522,7 +522,7 @@ Dictionary::Ptr IdoPgsqlConnection::FetchRow(const IdoPgsqlResult& result, int r
 	AssertOnWorkQueue();
 
 	if (row >= PQntuples(result.get()))
-		return Dictionary::Ptr();
+		return nullptr;
 
 	int columns = PQnfields(result.get());
 

lib/db_ido_pgsql/idopgsqlconnection.hpp

@@ -29,7 +29,7 @@
 namespace icinga
 {
 
-typedef boost::shared_ptr<PGresult> IdoPgsqlResult;
+typedef std::shared_ptr<PGresult> IdoPgsqlResult;
 
 /**
  * An IDO pgSQL database connection.

lib/demo/demo.cpp

@@ -54,7 +54,7 @@ void Demo::DemoTimerHandler(void)
 	ApiListener::Ptr listener = ApiListener::GetInstance();
 	if (listener) {
 		MessageOrigin::Ptr origin = new MessageOrigin();
-		listener->RelayMessage(origin, ConfigObject::Ptr(), message, true);
+		listener->RelayMessage(origin, nullptr, message, true);
 		Log(LogInformation, "Demo", "Sent demo::HelloWorld message");
 	}
 }

lib/icinga/apiactions.cpp

@@ -165,7 +165,7 @@ Dictionary::Ptr ApiActions::SendCustomNotification(const ConfigObject::Ptr& obje
 		checkable->SetForceNextNotification(true);
 
 	Checkable::OnNotificationsRequested(checkable, NotificationCustom, checkable->GetLastCheckResult(),
-	    HttpUtility::GetLastParameter(params, "author"), HttpUtility::GetLastParameter(params, "comment"), MessageOrigin::Ptr());
+	    HttpUtility::GetLastParameter(params, "author"), HttpUtility::GetLastParameter(params, "comment"), nullptr);
 
 	return ApiActions::CreateResult(200, "Successfully sent custom notification for object '" + checkable->GetName() + "'.");
 }

lib/icinga/apiactions.hpp

@@ -48,7 +48,7 @@ public:
 	static Dictionary::Ptr GenerateTicket(const ConfigObject::Ptr& object, const Dictionary::Ptr& params);
 
 private:
-	static Dictionary::Ptr CreateResult(int code, const String& status, const Dictionary::Ptr& additional = Dictionary::Ptr());
+	static Dictionary::Ptr CreateResult(int code, const String& status, const Dictionary::Ptr& additional = nullptr);
 };
 
 }

lib/icinga/checkable-check.cpp

@@ -371,7 +371,7 @@ void Checkable::ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrig
 	if (!in_downtime && !was_flapping && is_flapping) {
 		/* FlappingStart notifications happen on state changes, not in downtimes */
 		if (!IsPaused())
-			OnNotificationsRequested(this, NotificationFlappingStart, cr, "", "", MessageOrigin::Ptr());
+			OnNotificationsRequested(this, NotificationFlappingStart, cr, "", "", nullptr);
 
 		Log(LogNotice, "Checkable")
 		    << "Flapping Start: Checkable '" << GetName() << "' started flapping (Current flapping value "
@@ -381,7 +381,7 @@ void Checkable::ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrig
 	} else if (!in_downtime && was_flapping && !is_flapping) {
 		/* FlappingEnd notifications are independent from state changes, must not happen in downtine */
 		if (!IsPaused())
-			OnNotificationsRequested(this, NotificationFlappingEnd, cr, "", "", MessageOrigin::Ptr());
+			OnNotificationsRequested(this, NotificationFlappingEnd, cr, "", "", nullptr);
 
 		Log(LogNotice, "Checkable")
 		    << "Flapping Stop: Checkable '" << GetName() << "' stopped flapping (Current flapping value "
@@ -392,7 +392,7 @@ void Checkable::ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrig
 
 	if (send_notification && !is_flapping) {
 		if (!IsPaused())
-			OnNotificationsRequested(this, recovery ? NotificationRecovery : NotificationProblem, cr, "", "", MessageOrigin::Ptr());
+			OnNotificationsRequested(this, recovery ? NotificationRecovery : NotificationProblem, cr, "", "", nullptr);
 	}
 }
 

lib/icinga/checkable-dependency.cpp

@@ -35,10 +35,10 @@ void Checkable::RemoveDependency(const Dependency::Ptr& dep)
 	m_Dependencies.erase(dep);
 }
 
-std::set<Dependency::Ptr> Checkable::GetDependencies(void) const
+std::vector<Dependency::Ptr> Checkable::GetDependencies(void) const
 {
 	boost::mutex::scoped_lock lock(m_DependencyMutex);
-	return m_Dependencies;
+	return std::vector<Dependency::Ptr>(m_Dependencies.begin(), m_Dependencies.end());
 }
 
 void Checkable::AddReverseDependency(const Dependency::Ptr& dep)
@@ -53,10 +53,10 @@ void Checkable::RemoveReverseDependency(const Dependency::Ptr& dep)
 	m_ReverseDependencies.erase(dep);
 }
 
-std::set<Dependency::Ptr> Checkable::GetReverseDependencies(void) const
+std::vector<Dependency::Ptr> Checkable::GetReverseDependencies(void) const
 {
 	boost::mutex::scoped_lock lock(m_DependencyMutex);
-	return m_ReverseDependencies;
+	return std::vector<Dependency::Ptr>(m_ReverseDependencies.begin(), m_ReverseDependencies.end());
 }
 
 bool Checkable::IsReachable(DependencyType dt, Dependency::Ptr *failedDependency, int rstack) const
@@ -80,7 +80,7 @@ bool Checkable::IsReachable(DependencyType dt, Dependency::Ptr *failedDependency
 
 		if (host && host->GetState() != HostUp && host->GetStateType() == StateTypeHard) {
 			if (failedDependency)
-				*failedDependency = Dependency::Ptr();
+				*failedDependency = nullptr;
 
 			return false;
 		}
@@ -96,7 +96,7 @@ bool Checkable::IsReachable(DependencyType dt, Dependency::Ptr *failedDependency
 	}
 
 	if (failedDependency)
-		*failedDependency = Dependency::Ptr();
+		*failedDependency = nullptr;
 
 	return true;
 }
@@ -148,7 +148,7 @@ void Checkable::GetAllChildrenInternal(std::set<Checkable::Ptr>& children, int l
 	for (const Checkable::Ptr& checkable : children) {
 		std::set<Checkable::Ptr> cChildren = checkable->GetChildren();
 
-		if (!checkable->GetChildren().empty()) {
+		if (!cChildren.empty()) {
 			GetAllChildrenInternal(cChildren, level + 1);
 			localChildren.insert(cChildren.begin(), cChildren.end());
 		}

lib/icinga/checkable.cpp

@@ -128,7 +128,7 @@ void Checkable::AcknowledgeProblem(const String& author, const String& comment,
 	SetAcknowledgementExpiry(expiry);
 
 	if (notify && !IsPaused())
-		OnNotificationsRequested(this, NotificationAcknowledgement, GetLastCheckResult(), author, comment, MessageOrigin::Ptr());
+		OnNotificationsRequested(this, NotificationAcknowledgement, GetLastCheckResult(), author, comment, nullptr);
 
 	OnAcknowledgementSet(this, author, comment, type, notify, persistent, expiry, origin);
 }
@@ -173,7 +173,7 @@ void Checkable::NotifyDowntimeInternal(const Downtime::Ptr& downtime)
 	Checkable::Ptr checkable = downtime->GetCheckable();
 
 	if (!checkable->IsPaused())
-		OnNotificationsRequested(checkable, NotificationDowntimeStart, checkable->GetLastCheckResult(), downtime->GetAuthor(), downtime->GetComment(), MessageOrigin::Ptr());
+		OnNotificationsRequested(checkable, NotificationDowntimeStart, checkable->GetLastCheckResult(), downtime->GetAuthor(), downtime->GetComment(), nullptr);
 }
 
 void Checkable::NotifyDowntimeEnd(const Downtime::Ptr& downtime)
@@ -185,7 +185,7 @@ void Checkable::NotifyDowntimeEnd(const Downtime::Ptr& downtime)
 	Checkable::Ptr checkable = downtime->GetCheckable();
 
 	if (!checkable->IsPaused())
-		OnNotificationsRequested(checkable, NotificationDowntimeEnd, checkable->GetLastCheckResult(), downtime->GetAuthor(), downtime->GetComment(), MessageOrigin::Ptr());
+		OnNotificationsRequested(checkable, NotificationDowntimeEnd, checkable->GetLastCheckResult(), downtime->GetAuthor(), downtime->GetComment(), nullptr);
 }
 
 void Checkable::ValidateCheckInterval(double value, const ValidationUtils& utils)

lib/icinga/checkable.hpp

@@ -98,8 +98,8 @@ public:
 
 	AcknowledgementType GetAcknowledgement(void);
 
-	void AcknowledgeProblem(const String& author, const String& comment, AcknowledgementType type, bool notify = true, bool persistent = false, double expiry = 0, const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
-	void ClearAcknowledgement(const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	void AcknowledgeProblem(const String& author, const String& comment, AcknowledgementType type, bool notify = true, bool persistent = false, double expiry = 0, const MessageOrigin::Ptr& origin = nullptr);
+	void ClearAcknowledgement(const MessageOrigin::Ptr& origin = nullptr);
 
 	virtual int GetSeverity(void) const override;
 
@@ -110,7 +110,7 @@ public:
 	long GetSchedulingOffset(void);
 	void SetSchedulingOffset(long offset);
 
-	void UpdateNextCheck(const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	void UpdateNextCheck(const MessageOrigin::Ptr& origin = nullptr);
 
 	bool HasBeenChecked(void) const;
 	virtual bool IsStateOK(ServiceState state) = 0;
@@ -121,9 +121,9 @@ public:
 
 	static void UpdateStatistics(const CheckResult::Ptr& cr, CheckableType type);
 
-	void ExecuteRemoteCheck(const Dictionary::Ptr& resolvedMacros = Dictionary::Ptr());
+	void ExecuteRemoteCheck(const Dictionary::Ptr& resolvedMacros = nullptr);
 	void ExecuteCheck();
-	void ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	void ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrigin::Ptr& origin = nullptr);
 
 	Endpoint::Ptr GetCommandEndpoint(void) const;
 
@@ -174,7 +174,7 @@ public:
 	void ResetNotificationNumbers(void);
 
 	/* Event Handler */
-	void ExecuteEventHandler(const Dictionary::Ptr& resolvedMacros = Dictionary::Ptr(),
+	void ExecuteEventHandler(const Dictionary::Ptr& resolvedMacros = nullptr,
 	    bool useResolvedMacros = false);
 
 	intrusive_ptr<EventCommand> GetEventCommand(void) const;
@@ -185,11 +185,11 @@ public:
 	/* Dependencies */
 	void AddDependency(const intrusive_ptr<Dependency>& dep);
 	void RemoveDependency(const intrusive_ptr<Dependency>& dep);
-	std::set<intrusive_ptr<Dependency> > GetDependencies(void) const;
+	std::vector<intrusive_ptr<Dependency> > GetDependencies(void) const;
 
 	void AddReverseDependency(const intrusive_ptr<Dependency>& dep);
 	void RemoveReverseDependency(const intrusive_ptr<Dependency>& dep);
-	std::set<intrusive_ptr<Dependency> > GetReverseDependencies(void) const;
+	std::vector<intrusive_ptr<Dependency> > GetReverseDependencies(void) const;
 
 	virtual void ValidateCheckInterval(double value, const ValidationUtils& utils) override;
 	virtual void ValidateMaxCheckAttempts(int value, const ValidationUtils& utils) override;

lib/icinga/checkcommand.cpp

@@ -28,10 +28,10 @@ REGISTER_TYPE(CheckCommand);
 void CheckCommand::Execute(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr,
     const Dictionary::Ptr& resolvedMacros, bool useResolvedMacros)
 {
-	std::vector<Value> arguments;
-	arguments.push_back(checkable);
-	arguments.push_back(cr);
-	arguments.push_back(resolvedMacros);
-	arguments.push_back(useResolvedMacros);
-	GetExecute()->Invoke(arguments);
+	GetExecute()->Invoke({
+	    checkable,
+	    cr,
+	    resolvedMacros,
+	    useResolvedMacros
+	});
 }

lib/icinga/checkcommand.hpp

@@ -38,7 +38,7 @@ public:
 	DECLARE_OBJECTNAME(CheckCommand);
 
 	virtual void Execute(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr,
-	    const Dictionary::Ptr& resolvedMacros = Dictionary::Ptr(),
+	    const Dictionary::Ptr& resolvedMacros = nullptr,
 	    bool useResolvedMacros = false);
 };
 

lib/icinga/checkresult.cpp

@@ -24,10 +24,8 @@
 using namespace icinga;
 
 REGISTER_TYPE(CheckResult);
-INITIALIZE_ONCE(&CheckResult::StaticInitialize);
 
-void CheckResult::StaticInitialize(void)
-{
+INITIALIZE_ONCE([]() {
 	ScriptGlobal::Set("ServiceOK", ServiceOK);
 	ScriptGlobal::Set("ServiceWarning", ServiceWarning);
 	ScriptGlobal::Set("ServiceCritical", ServiceCritical);
@@ -35,7 +33,7 @@ void CheckResult::StaticInitialize(void)
 
 	ScriptGlobal::Set("HostUp", HostUp);
 	ScriptGlobal::Set("HostDown", HostDown);
-}
+})
 
 double CheckResult::CalculateExecutionTime(void) const
 {

lib/icinga/checkresult.hpp

@@ -38,8 +38,6 @@ public:
 
 	double CalculateExecutionTime(void) const;
 	double CalculateLatency(void) const;
-
-	static void StaticInitialize(void);
 };
 
 }

lib/icinga/clusterevents.cpp

@@ -704,7 +704,7 @@ void ClusterEvents::SendNotificationsHandler(const Checkable::Ptr& checkable, No
 	params->Set("author", author);
 	params->Set("text", text);
 
-	listener->RelayMessage(origin, ConfigObject::Ptr(), message, true);
+	listener->RelayMessage(origin, nullptr, message, true);
 }
 
 Value ClusterEvents::SendNotificationsAPIHandler(const MessageOrigin::Ptr& origin, const Dictionary::Ptr& params)
@@ -798,7 +798,7 @@ void ClusterEvents::NotificationSentUserHandler(const Notification::Ptr& notific
 	message->Set("method", "event::NotificationSentUser");
 	message->Set("params", params);
 
-	listener->RelayMessage(origin, ConfigObject::Ptr(), message, true);
+	listener->RelayMessage(origin, nullptr, message, true);
 }
 
 Value ClusterEvents::NotificationSentUserAPIHandler(const MessageOrigin::Ptr& origin, const Dictionary::Ptr& params)
@@ -914,7 +914,7 @@ void ClusterEvents::NotificationSentToAllUsersHandler(const Notification::Ptr& n
 	message->Set("method", "event::NotificationSentToAllUsers");
 	message->Set("params", params);
 
-	listener->RelayMessage(origin, ConfigObject::Ptr(), message, true);
+	listener->RelayMessage(origin, nullptr, message, true);
 }
 
 Value ClusterEvents::NotificationSentToAllUsersAPIHandler(const MessageOrigin::Ptr& origin, const Dictionary::Ptr& params)

lib/icinga/comment.cpp

@@ -26,6 +26,7 @@
 #include "base/timer.hpp"
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/classification.hpp>
+#include <boost/thread/once.hpp>
 
 using namespace icinga;
 
@@ -37,18 +38,8 @@ static Timer::Ptr l_CommentsExpireTimer;
 boost::signals2::signal<void (const Comment::Ptr&)> Comment::OnCommentAdded;
 boost::signals2::signal<void (const Comment::Ptr&)> Comment::OnCommentRemoved;
 
-INITIALIZE_ONCE(&Comment::StaticInitialize);
-
 REGISTER_TYPE(Comment);
 
-void Comment::StaticInitialize(void)
-{
-	l_CommentsExpireTimer = new Timer();
-	l_CommentsExpireTimer->SetInterval(60);
-	l_CommentsExpireTimer->OnTimerExpired.connect(std::bind(&Comment::CommentsExpireTimerHandler));
-	l_CommentsExpireTimer->Start();
-}
-
 String CommentNameComposer::MakeName(const String& shortName, const Object::Ptr& context) const
 {
 	Comment::Ptr comment = dynamic_pointer_cast<Comment>(context);
@@ -106,6 +97,15 @@ void Comment::Start(bool runtimeCreated)
 {
 	ObjectImpl<Comment>::Start(runtimeCreated);
 
+	static boost::once_flag once = BOOST_ONCE_INIT;
+
+	boost::call_once(once, []() {
+		l_CommentsExpireTimer = new Timer();
+		l_CommentsExpireTimer->SetInterval(60);
+		l_CommentsExpireTimer->OnTimerExpired.connect(std::bind(&Comment::CommentsExpireTimerHandler));
+		l_CommentsExpireTimer->Start();
+	});
+
 	{
 		boost::mutex::scoped_lock lock(l_CommentMutex);
 
@@ -181,7 +181,7 @@ String Comment::AddComment(const Checkable::Ptr& checkable, CommentType entryTyp
 	if (!zone.IsEmpty())
 		attrs->Set("zone", zone);
 
-	String config = ConfigObjectUtility::CreateObjectConfig(Comment::TypeInstance, fullName, true, Array::Ptr(), attrs);
+	String config = ConfigObjectUtility::CreateObjectConfig(Comment::TypeInstance, fullName, true, nullptr, attrs);
 
 	Array::Ptr errors = new Array();
 

lib/icinga/comment.hpp

@@ -50,14 +50,12 @@ public:
 
 	static String AddComment(const intrusive_ptr<Checkable>& checkable, CommentType entryType,
 	    const String& author, const String& text, bool persistent, double expireTime,
-	    const String& id = String(), const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	    const String& id = String(), const MessageOrigin::Ptr& origin = nullptr);
 
-	static void RemoveComment(const String& id, const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	static void RemoveComment(const String& id, const MessageOrigin::Ptr& origin = nullptr);
 
 	static String GetCommentIDFromLegacyID(int id);
 
-	static void StaticInitialize(void);
-
 protected:
 	virtual void OnAllConfigLoaded(void) override;
 	virtual void Start(bool runtimeCreated) override;

lib/icinga/comment.ti

@@ -72,7 +72,7 @@ class Comment : ConfigObject < CommentNameComposer
 		}}}
 		navigate {{{
 			if (GetServiceName().IsEmpty())
-				return Service::Ptr();
+				return nullptr;
 
 			Host::Ptr host = Host::GetByName(GetHostName());
 			return host->GetServiceByShortName(GetServiceName());

lib/icinga/compatutility.cpp

@@ -368,7 +368,7 @@ Dictionary::Ptr CompatUtility::GetCustomAttributeConfig(const CustomVarObject::P
 	Dictionary::Ptr vars = object->GetVars();
 
 	if (!vars)
-		return Dictionary::Ptr();
+		return nullptr;
 
 	return vars;
 }

lib/icinga/dependency-apply.cpp

@@ -31,10 +31,7 @@
 using namespace icinga;
 
 INITIALIZE_ONCE([]() {
-	std::vector<String> targets;
-	targets.push_back("Host");
-	targets.push_back("Service");
-	ApplyRule::RegisterType("Dependency", targets);
+	ApplyRule::RegisterType("Dependency", { "Host", "Service" });
 });
 
 bool Dependency::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule)

lib/icinga/dependency.ti

@@ -60,7 +60,7 @@ class Dependency : CustomVarObject < DependencyNameComposer
 		}}}
 		navigate {{{
 			if (GetChildServiceName().IsEmpty())
-				return Service::Ptr();
+				return nullptr;
 
 			Host::Ptr host = Host::GetByName(GetChildHostName());
 			return host->GetServiceByShortName(GetChildServiceName());
@@ -87,7 +87,7 @@ class Dependency : CustomVarObject < DependencyNameComposer
 		}}}
 		navigate {{{
 			if (GetParentServiceName().IsEmpty())
-				return Service::Ptr();
+				return nullptr;
 
 			Host::Ptr host = Host::GetByName(GetParentHostName());
 			return host->GetServiceByShortName(GetParentServiceName());

lib/icinga/downtime.cpp

@@ -27,6 +27,7 @@
 #include "base/timer.hpp"
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/classification.hpp>
+#include <boost/thread/once.hpp>
 
 using namespace icinga;
 
@@ -41,23 +42,8 @@ boost::signals2::signal<void (const Downtime::Ptr&)> Downtime::OnDowntimeRemoved
 boost::signals2::signal<void (const Downtime::Ptr&)> Downtime::OnDowntimeStarted;
 boost::signals2::signal<void (const Downtime::Ptr&)> Downtime::OnDowntimeTriggered;
 
-INITIALIZE_ONCE(&Downtime::StaticInitialize);
-
 REGISTER_TYPE(Downtime);
 
-void Downtime::StaticInitialize(void)
-{
-	l_DowntimesStartTimer = new Timer();
-	l_DowntimesStartTimer->SetInterval(5);
-	l_DowntimesStartTimer->OnTimerExpired.connect(std::bind(&Downtime::DowntimesStartTimerHandler));
-	l_DowntimesStartTimer->Start();
-
-	l_DowntimesExpireTimer = new Timer();
-	l_DowntimesExpireTimer->SetInterval(60);
-	l_DowntimesExpireTimer->OnTimerExpired.connect(std::bind(&Downtime::DowntimesExpireTimerHandler));
-	l_DowntimesExpireTimer->Start();
-}
-
 String DowntimeNameComposer::MakeName(const String& shortName, const Object::Ptr& context) const
 {
 	Downtime::Ptr downtime = dynamic_pointer_cast<Downtime>(context);
@@ -115,6 +101,20 @@ void Downtime::Start(bool runtimeCreated)
 {
 	ObjectImpl<Downtime>::Start(runtimeCreated);
 
+	static boost::once_flag once = BOOST_ONCE_INIT;
+
+	boost::call_once(once, []() {
+		l_DowntimesStartTimer = new Timer();
+		l_DowntimesStartTimer->SetInterval(5);
+		l_DowntimesStartTimer->OnTimerExpired.connect(std::bind(&Downtime::DowntimesStartTimerHandler));
+		l_DowntimesStartTimer->Start();
+
+		l_DowntimesExpireTimer = new Timer();
+		l_DowntimesExpireTimer->SetInterval(60);
+		l_DowntimesExpireTimer->OnTimerExpired.connect(std::bind(&Downtime::DowntimesExpireTimerHandler));
+		l_DowntimesExpireTimer->Start();
+	});
+
 	{
 		boost::mutex::scoped_lock lock(l_DowntimeMutex);
 
@@ -255,7 +255,7 @@ String Downtime::AddDowntime(const Checkable::Ptr& checkable, const String& auth
 	if (!zone.IsEmpty())
 		attrs->Set("zone", zone);
 
-	String config = ConfigObjectUtility::CreateObjectConfig(Downtime::TypeInstance, fullName, true, Array::Ptr(), attrs);
+	String config = ConfigObjectUtility::CreateObjectConfig(Downtime::TypeInstance, fullName, true, nullptr, attrs);
 
 	Array::Ptr errors = new Array();
 

lib/icinga/downtime.hpp

@@ -57,16 +57,14 @@ public:
 	    const String& comment, double startTime, double endTime, bool fixed,
 	    const String& triggeredBy, double duration, const String& scheduledDowntime = String(),
 	    const String& scheduledBy = String(), const String& id = String(),
-	    const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	    const MessageOrigin::Ptr& origin = nullptr);
 
-	static void RemoveDowntime(const String& id, bool cancelled, bool expired = false, const MessageOrigin::Ptr& origin = MessageOrigin::Ptr());
+	static void RemoveDowntime(const String& id, bool cancelled, bool expired = false, const MessageOrigin::Ptr& origin = nullptr);
 
 	void TriggerDowntime(void);
 
 	static String GetDowntimeIDFromLegacyID(int id);
 
-	static void StaticInitialize(void);
-
 protected:
 	virtual void OnAllConfigLoaded(void) override;
 	virtual void Start(bool runtimeCreated) override;