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https://github.com/Icinga/icinga2.git
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78e24c53f1
This follows the same principle as with the shutdown handler, and was introduced with the changed reload handling with 2.9. Previously IsShuttingDown() was sufficient which got set at one location. SigUsr2 as handler introduced a new location where m_ShuttingDown is not necessarily set yet. Since this handler gets called when l_Restarting is enabled, we'll use this flag to avoid config update events resulting in object deactivation (object->IsActive() always returns false). refs #5996 refs #6691 refs #6970 fixes #7125
157 lines
3.9 KiB
C++
157 lines
3.9 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#ifndef APPLICATION_H
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#define APPLICATION_H
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#include "base/i2-base.hpp"
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#include "base/application-ti.hpp"
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#include "base/logger.hpp"
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#include "base/configuration.hpp"
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#include <iosfwd>
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namespace icinga
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{
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class ThreadPool;
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/**
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* Abstract base class for applications.
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*
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* @ingroup base
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*/
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class Application : public ObjectImpl<Application> {
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public:
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DECLARE_OBJECT(Application);
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static boost::signals2::signal<void ()> OnReopenLogs;
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~Application() override;
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static void InitializeBase();
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static void UninitializeBase();
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static Application::Ptr GetInstance();
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static void Exit(int rc);
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int Run();
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/**
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* Starts the application.
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*
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* @returns The exit code of the application.
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*/
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virtual int Main() = 0;
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static void SetResourceLimits();
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static int GetArgC();
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static void SetArgC(int argc);
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static char **GetArgV();
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static void SetArgV(char **argv);
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static void InstallExceptionHandlers();
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static void RequestShutdown();
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static void RequestRestart();
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static void RequestReopenLogs();
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static bool IsShuttingDown();
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static bool IsRestarting();
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static void SetDebuggingSeverity(LogSeverity severity);
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static LogSeverity GetDebuggingSeverity();
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void UpdatePidFile(const String& filename);
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void UpdatePidFile(const String& filename, pid_t pid);
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void ClosePidFile(bool unlink);
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static pid_t ReadPidFile(const String& filename);
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static String GetExePath(const String& argv0);
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#ifdef _WIN32
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static bool IsProcessElevated();
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#endif /* _WIN32 */
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static int GetDefaultRLimitFiles();
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static int GetDefaultRLimitProcesses();
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static int GetDefaultRLimitStack();
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static double GetReloadTimeout();
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static ThreadPool& GetTP();
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static String GetAppVersion();
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static String GetAppSpecVersion();
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static String GetAppEnvironment();
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static void SetAppEnvironment(const String& name);
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static double GetStartTime();
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static void SetStartTime(double ts);
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static double GetMainTime();
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static void SetMainTime(double ts);
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static bool GetScriptDebuggerEnabled();
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static void SetScriptDebuggerEnabled(bool enabled);
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static double GetLastReloadFailed();
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static void SetLastReloadFailed(double ts);
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static void DisplayInfoMessage(std::ostream& os, bool skipVersion = false);
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protected:
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void OnConfigLoaded() override;
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void Stop(bool runtimeRemoved) override;
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void RunEventLoop();
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pid_t StartReloadProcess();
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virtual void OnShutdown();
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void ValidateName(const Lazy<String>& lvalue, const ValidationUtils& utils) final;
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private:
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static Application::Ptr m_Instance; /**< The application instance. */
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static bool m_ShuttingDown; /**< Whether the application is in the process of shutting down. */
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static bool m_RequestRestart; /**< A restart was requested through SIGHUP */
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static pid_t m_ReloadProcess; /**< The PID of a subprocess doing a reload, only valid when l_Restarting==true */
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static bool m_RequestReopenLogs; /**< Whether we should re-open log files. */
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static int m_ArgC; /**< The number of command-line arguments. */
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static char **m_ArgV; /**< Command-line arguments. */
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FILE *m_PidFile; /**< The PID file */
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static bool m_Debugging; /**< Whether debugging is enabled. */
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static LogSeverity m_DebuggingSeverity; /**< Whether debugging severity is set. */
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static double m_StartTime;
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static double m_MainTime;
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static bool m_ScriptDebuggerEnabled;
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static double m_LastReloadFailed;
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#ifndef _WIN32
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static void SigIntTermHandler(int signum);
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#else /* _WIN32 */
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static BOOL WINAPI CtrlHandler(DWORD type);
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static LONG WINAPI SEHUnhandledExceptionFilter(PEXCEPTION_POINTERS exi);
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#endif /* _WIN32 */
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static void DisplayBugMessage(std::ostream& os);
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static void SigAbrtHandler(int signum);
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static void SigUsr1Handler(int signum);
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static void SigUsr2Handler(int signum);
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static void ExceptionHandler();
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static String GetCrashReportFilename();
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static void AttachDebugger(const String& filename, bool interactive);
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};
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}
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#endif /* APPLICATION_H */
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