mirror of https://github.com/minetest/minetest.git
118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/*
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This file is a part of the JThread package, which contains some object-
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oriented thread wrappers for different thread implementations.
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Copyright (c) 2000-2006 Jori Liesenborgs (jori.liesenborgs@gmail.com)
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#ifndef JTHREAD_H
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#define JTHREAD_H
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#if __cplusplus >= 201103L
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#include <atomic>
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#endif
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#include "jthread/jmutex.h"
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#define ERR_JTHREAD_CANTINITMUTEX -1
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#define ERR_JTHREAD_CANTSTARTTHREAD -2
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#define ERR_JTHREAD_THREADFUNCNOTSET -3
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#define ERR_JTHREAD_NOTRUNNING -4
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#define ERR_JTHREAD_ALREADYRUNNING -5
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class JThread
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{
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public:
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JThread();
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virtual ~JThread();
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int Start();
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inline void Stop()
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{ requeststop = true; }
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int Kill();
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virtual void *Thread() = 0;
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inline bool IsRunning()
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{ return running; }
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inline bool StopRequested()
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{ return requeststop; }
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void *GetReturnValue();
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bool IsSameThread();
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/*
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* Wait for thread to finish
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* Note: this does not stop a thread you have to do this on your own
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* WARNING: never ever call this on a thread not started or already killed!
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*/
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void Wait();
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protected:
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void ThreadStarted();
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private:
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#if (defined(WIN32) || defined(_WIN32_WCE))
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#ifdef _WIN32_WCE
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DWORD threadid;
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static DWORD WINAPI TheThread(void *param);
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#else
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static UINT __stdcall TheThread(void *param);
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UINT threadid;
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#endif // _WIN32_WCE
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HANDLE threadhandle;
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#else // pthread type threads
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static void *TheThread(void *param);
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pthread_t threadid;
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/*
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* reading and writing bool values is atomic on all relevant architectures
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* ( x86 + arm ). No need to waste time for locking here.
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* once C++11 is supported we can tell compiler to handle cpu caches correct
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* too. This should cause additional improvement (and silence thread
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* concurrency check tools.
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*/
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#if __cplusplus >= 201103L
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std::atomic_bool started;
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#else
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bool started;
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#endif
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#endif // WIN32
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void *retval;
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/*
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* reading and writing bool values is atomic on all relevant architectures
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* ( x86 + arm ). No need to waste time for locking here.
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* once C++11 is supported we can tell compiler to handle cpu caches correct
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* too. This should cause additional improvement (and silence thread
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* concurrency check tools.
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*/
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#if __cplusplus >= 201103L
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std::atomic_bool running;
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std::atomic_bool requeststop;
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#else
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bool running;
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bool requeststop;
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#endif
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JMutex continuemutex,continuemutex2;
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};
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#endif // JTHREAD_H
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