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Hoist MOULOpenSourceClientPlugin/Plasma20/* to top level
to match H'uru layout and make patching/cherry-picking easier.
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301
Sources/Plasma/CoreLib/hsThread.h
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301
Sources/Plasma/CoreLib/hsThread.h
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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional permissions under GNU GPL version 3 section 7
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If you modify this Program, or any covered work, by linking or
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
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(or a modified version of those libraries),
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
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licensors of this Program grant you additional
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permission to convey the resulting work. Corresponding Source for a
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non-source form of such a combination shall include the source code for
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
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work.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#ifndef hsThread_Defined
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#define hsThread_Defined
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#include "hsTypes.h"
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typedef UInt32 hsMilliseconds;
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#if HS_BUILD_FOR_MAC
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#include <Multiprocessing.h>
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#elif HS_BUILD_FOR_WIN32
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#include "hsWindows.h"
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#elif HS_BUILD_FOR_UNIX
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#include <pthread.h>
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#include <semaphore.h>
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// We can't wait with a timeout with semas
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#define USE_SEMA
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// Linux kernel 2.4 w/ NTPL threading patch and O(1) scheduler
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// seems to have a problem in it's cond_t implementation that
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// causes a hang under heavy load. This is a workaround that
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// uses select() and pipes.
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// #define PSEUDO_EVENT
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#endif
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class hsThread
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{
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public:
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#if HS_BUILD_FOR_MAC
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typedef MPTaskId ThreadId;
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#elif HS_BUILD_FOR_WIN32
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typedef DWORD ThreadId;
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#elif HS_BUILD_FOR_UNIX
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typedef pthread_t ThreadId;
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#endif
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private:
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hsBool fQuit;
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UInt32 fStackSize;
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#if HS_BUILD_FOR_MAC
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ThreadId fTaskId;
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MPQueueId fNotifyQ;
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#elif HS_BUILD_FOR_WIN32
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ThreadId fThreadId;
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HANDLE fThreadH;
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HANDLE fQuitSemaH;
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#elif HS_BUILD_FOR_UNIX
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ThreadId fPThread;
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hsBool fIsValid;
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pthread_mutex_t fMutex;
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#endif
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protected:
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hsBool GetQuit() const { return hsBool(fQuit); }
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void SetQuit(hsBool value) { fQuit = value; }
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public:
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hsThread(UInt32 stackSize = 0);
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virtual ~hsThread(); // calls Stop()
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#if HS_BUILD_FOR_MAC
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ThreadId GetThreadId() { return fTaskId; }
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#error "Mac is Depricated"
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#elif HS_BUILD_FOR_WIN32
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ThreadId GetThreadId() { return fThreadId; }
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static ThreadId GetMyThreadId() { return GetCurrentThreadId(); }
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#elif HS_BUILD_FOR_UNIX
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ThreadId GetThreadId() { return fPThread; }
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static ThreadId GetMyThreadId() { return pthread_self(); }
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pthread_mutex_t* GetStartupMutex() { return &fMutex; }
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#endif
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virtual hsError Run() = 0; // override this to do your work
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virtual void Start(); // initializes stuff and calls your Run() method
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virtual void Stop(); // sets fQuit = true and the waits for the thread to stop
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// Static functions
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static void* Alloc(size_t size); // does not call operator::new(), may return nil
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static void Free(void* p); // does not call operator::delete()
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static void ThreadYield();
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#if HS_BUILD_FOR_WIN32
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DWORD WinRun();
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#endif
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};
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//////////////////////////////////////////////////////////////////////////////
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class hsMutex {
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#if HS_BUILD_FOR_MAC
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MPCriticalRegionId fCriticalRegion;
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#elif HS_BUILD_FOR_WIN32
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HANDLE fMutexH;
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#elif HS_BUILD_FOR_UNIX
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pthread_mutex_t fPMutex;
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#endif
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public:
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hsMutex();
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virtual ~hsMutex();
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void Lock();
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hsBool TryLock();
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void Unlock();
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};
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class hsTempMutexLock {
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hsMutex* fMutex;
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public:
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hsTempMutexLock(hsMutex* mutex) : fMutex(mutex)
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{
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fMutex->Lock();
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}
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hsTempMutexLock(hsMutex& mutex) : fMutex(&mutex)
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{
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fMutex->Lock();
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}
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~hsTempMutexLock()
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{
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fMutex->Unlock();
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}
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};
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//////////////////////////////////////////////////////////////////////////////
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class hsSemaphore {
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#if HS_BUILD_FOR_MAC
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MPSemaphoreId fSemaId;
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#elif HS_BUILD_FOR_WIN32
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HANDLE fSemaH;
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#elif HS_BUILD_FOR_UNIX
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#ifdef USE_SEMA
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sem_t fPSema;
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#else
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pthread_mutex_t fPMutex;
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pthread_cond_t fPCond;
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Int32 fCounter;
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#endif
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#endif
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public:
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#ifdef HS_BUILD_FOR_WIN32
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hsSemaphore(int initialValue=0, const char *name=nil);
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#else
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hsSemaphore(int initialValue=0);
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#endif
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~hsSemaphore();
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hsBool Wait(hsMilliseconds timeToWait = kPosInfinity32);
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void Signal();
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};
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//////////////////////////////////////////////////////////////////////////////
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#if !HS_BUILD_FOR_MAC
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class hsEvent
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{
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#if HS_BUILD_FOR_UNIX
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#ifndef PSEUDO_EVENT
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pthread_mutex_t fMutex;
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pthread_cond_t fCond;
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hsBool fTriggered;
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#else
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enum { kRead, kWrite };
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int fFds[2];
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hsMutex fWaitLock;
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hsMutex fSignalLock;
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#endif // PSEUDO_EVENT
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#elif HS_BUILD_FOR_WIN32
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HANDLE fEvent;
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#endif
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public:
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hsEvent();
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~hsEvent();
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hsBool Wait(hsMilliseconds timeToWait = kPosInfinity32);
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void Signal();
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};
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#endif // HS_BUILD_FOR_MAC
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//////////////////////////////////////////////////////////////////////////////
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#if !HS_BUILD_FOR_MAC
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class hsSleep
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{
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public:
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#if HS_BUILD_FOR_UNIX
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static void Sleep(UInt32 millis);
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#elif HS_BUILD_FOR_WIN32
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static void Sleep(UInt32 millis) { ::Sleep(millis); }
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#endif
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};
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#endif // HS_BUILD_FOR_MAC
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//////////////////////////////////////////////////////////////////////////////
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// Allows multiple readers, locks out readers for writing.
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class hsReaderWriterLock
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{
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public:
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struct Callback
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{
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virtual void OnLockingForRead( hsReaderWriterLock * lock ) {}
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virtual void OnLockedForRead( hsReaderWriterLock * lock ) {}
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virtual void OnUnlockingForRead( hsReaderWriterLock * lock ) {}
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virtual void OnUnlockedForRead( hsReaderWriterLock * lock ) {}
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virtual void OnLockingForWrite( hsReaderWriterLock * lock ) {}
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virtual void OnLockedForWrite( hsReaderWriterLock * lock ) {}
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virtual void OnUnlockingForWrite( hsReaderWriterLock * lock ) {}
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virtual void OnUnlockedForWrite( hsReaderWriterLock * lock ) {}
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};
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hsReaderWriterLock( const char * name="<unnamed>", Callback * cb=nil );
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~hsReaderWriterLock();
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void LockForReading();
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void UnlockForReading();
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void LockForWriting();
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void UnlockForWriting();
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const char * GetName() const { return fName; }
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private:
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int fReaderCount;
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hsMutex fReaderCountLock;
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hsMutex fReaderLock;
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hsSemaphore fWriterSema;
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Callback * fCallback;
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char * fName;
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};
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class hsLockForReading
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{
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hsReaderWriterLock * fLock;
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public:
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hsLockForReading( hsReaderWriterLock & lock ): fLock( &lock )
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{
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fLock->LockForReading();
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}
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hsLockForReading( hsReaderWriterLock * lock ): fLock( lock )
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{
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fLock->LockForReading();
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}
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~hsLockForReading()
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{
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fLock->UnlockForReading();
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}
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};
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class hsLockForWriting
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{
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hsReaderWriterLock * fLock;
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public:
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hsLockForWriting( hsReaderWriterLock & lock ): fLock( &lock )
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{
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fLock->LockForWriting();
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}
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hsLockForWriting( hsReaderWriterLock * lock ): fLock( lock )
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{
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fLock->LockForWriting();
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}
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~hsLockForWriting()
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{
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fLock->UnlockForWriting();
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}
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};
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#endif
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