Revert "CheckerComponent#Stop(): wait for all running checks"

This reverts commit 1eaad0637b.

lib/base/defer.hpp

@@ -1,59 +0,0 @@
-/******************************************************************************
- * Icinga 2                                                                   *
- * Copyright (C) 2012-2018 Icinga Development Team (https://icinga.com/)      *
- *                                                                            *
- * This program is free software; you can redistribute it and/or              *
- * modify it under the terms of the GNU General Public License                *
- * as published by the Free Software Foundation; either version 2             *
- * of the License, or (at your option) any later version.                     *
- *                                                                            *
- * This program is distributed in the hope that it will be useful,            *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
- * GNU General Public License for more details.                               *
- *                                                                            *
- * You should have received a copy of the GNU General Public License          *
- * along with this program; if not, write to the Free Software Foundation     *
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
- ******************************************************************************/
-
-#ifndef DEFER
-#define DEFER
-
-#include <functional>
-#include <utility>
-
-namespace icinga
-{
-
-/**
- * An action to be executed at end of scope.
- *
- * @ingroup base
- */
-class Defer
-{
-public:
-	inline
-	Defer(std::function<void()> func) : m_Func(std::move(func))
-	{
-	}
-
-	Defer(const Defer&) = delete;
-	Defer(Defer&&) = delete;
-	Defer& operator=(const Defer&) = delete;
-	Defer& operator=(Defer&&) = delete;
-
-	inline
-	~Defer()
-	{
-		m_Func();
-	}
-
-private:
-	std::function<void()> m_Func;
-};
-
-}
-
-#endif /* DEFER */

lib/checker/checkercomponent.cpp

@@ -23,7 +23,6 @@
 #include "icinga/cib.hpp"
 #include "remote/apilistener.hpp"
 #include "base/configtype.hpp"
-#include "base/defer.hpp"
 #include "base/objectlock.hpp"
 #include "base/utility.hpp"
 #include "base/perfdatavalue.hpp"
@@ -74,7 +73,6 @@ void CheckerComponent::Start(bool runtimeCreated)
 	Log(LogInformation, "CheckerComponent")
 		<< "'" << GetName() << "' started.";
 
-	m_RunningChecks.store(0);
 
 	m_Thread = std::thread(std::bind(&CheckerComponent::CheckThreadProc, this));
 
@@ -95,10 +93,6 @@ void CheckerComponent::Stop(bool runtimeRemoved)
 	m_ResultTimer->Stop();
 	m_Thread.join();
 
-	while (m_RunningChecks.load()) {
-		Utility::Sleep(1.0 / 60.0);
-	}
-
 	Log(LogInformation, "CheckerComponent")
 		<< "'" << GetName() << "' stopped.";
 
@@ -213,8 +207,6 @@ void CheckerComponent::CheckThreadProc()
 
 		Checkable::IncreasePendingChecks();
 
-		m_RunningChecks.fetch_add(1);
-
 		Utility::QueueAsyncCallback(std::bind(&CheckerComponent::ExecuteCheckHelper, CheckerComponent::Ptr(this), checkable));
 
 		lock.lock();
@@ -223,10 +215,6 @@ void CheckerComponent::CheckThreadProc()
 
 void CheckerComponent::ExecuteCheckHelper(const Checkable::Ptr& checkable)
 {
-	Defer decrementRunningChecks ([this]{
-		m_RunningChecks.fetch_sub(1);
-	});
-
 	try {
 		checkable->ExecuteCheck();
 	} catch (const std::exception& ex) {

lib/checker/checkercomponent.hpp

@@ -25,13 +25,11 @@
 #include "base/configobject.hpp"
 #include "base/timer.hpp"
 #include "base/utility.hpp"
-#include <atomic>
 #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 <cstdint>
 #include <thread>
 
 namespace icinga
@@ -92,7 +90,6 @@ private:
 	boost::condition_variable m_CV;
 	bool m_Stopped{false};
 	std::thread m_Thread;
-	std::atomic<uintmax_t> m_RunningChecks;
 
 	CheckableSet m_IdleCheckables;
 	CheckableSet m_PendingCheckables;