You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
274 lines
7.5 KiB
274 lines
7.5 KiB
/*==LICENSE==* |
|
|
|
CyanWorlds.com Engine - MMOG client, server and tools |
|
Copyright (C) 2011 Cyan Worlds, Inc. |
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>. |
|
|
|
Additional permissions under GNU GPL version 3 section 7 |
|
|
|
If you modify this Program, or any covered work, by linking or |
|
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
|
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
|
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
|
(or a modified version of those libraries), |
|
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
|
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
|
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
|
licensors of this Program grant you additional |
|
permission to convey the resulting work. Corresponding Source for a |
|
non-source form of such a combination shall include the source code for |
|
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
|
work. |
|
|
|
You can contact Cyan Worlds, Inc. by email legal@cyan.com |
|
or by snail mail at: |
|
Cyan Worlds, Inc. |
|
14617 N Newport Hwy |
|
Mead, WA 99021 |
|
|
|
*==LICENSE==*/ |
|
#ifndef hsThread_Defined |
|
#define hsThread_Defined |
|
|
|
#include "HeadSpin.h" |
|
|
|
typedef uint32_t hsMilliseconds; |
|
|
|
|
|
#ifdef HS_BUILD_FOR_UNIX |
|
#include <pthread.h> |
|
#include <semaphore.h> |
|
// We can't wait with a timeout with semas |
|
#define USE_SEMA |
|
// Linux kernel 2.4 w/ NTPL threading patch and O(1) scheduler |
|
// seems to have a problem in it's cond_t implementation that |
|
// causes a hang under heavy load. This is a workaround that |
|
// uses select() and pipes. |
|
// #define PSEUDO_EVENT |
|
#endif |
|
|
|
class hsThread |
|
{ |
|
public: |
|
#if HS_BUILD_FOR_WIN32 |
|
typedef DWORD ThreadId; |
|
#elif HS_BUILD_FOR_UNIX |
|
typedef pthread_t ThreadId; |
|
#endif |
|
private: |
|
hsBool fQuit; |
|
uint32_t fStackSize; |
|
#if HS_BUILD_FOR_WIN32 |
|
ThreadId fThreadId; |
|
HANDLE fThreadH; |
|
HANDLE fQuitSemaH; |
|
#elif HS_BUILD_FOR_UNIX |
|
ThreadId fPThread; |
|
hsBool fIsValid; |
|
pthread_mutex_t fMutex; |
|
#endif |
|
protected: |
|
hsBool GetQuit() const { return hsBool(fQuit); } |
|
void SetQuit(hsBool value) { fQuit = value; } |
|
public: |
|
hsThread(uint32_t stackSize = 0); |
|
virtual ~hsThread(); // calls Stop() |
|
#if HS_BUILD_FOR_WIN32 |
|
ThreadId GetThreadId() { return fThreadId; } |
|
static ThreadId GetMyThreadId() { return GetCurrentThreadId(); } |
|
#elif HS_BUILD_FOR_UNIX |
|
ThreadId GetThreadId() { return fPThread; } |
|
static ThreadId GetMyThreadId() { return pthread_self(); } |
|
pthread_mutex_t* GetStartupMutex() { return &fMutex; } |
|
#endif |
|
|
|
virtual hsError Run() = 0; // override this to do your work |
|
virtual void Start(); // initializes stuff and calls your Run() method |
|
virtual void Stop(); // sets fQuit = true and the waits for the thread to stop |
|
|
|
// Static functions |
|
static void* Alloc(size_t size); // does not call operator::new(), may return nil |
|
static void Free(void* p); // does not call operator::delete() |
|
static void ThreadYield(); |
|
}; |
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
|
|
class hsMutex { |
|
#if HS_BUILD_FOR_WIN32 |
|
HANDLE fMutexH; |
|
#elif HS_BUILD_FOR_UNIX |
|
pthread_mutex_t fPMutex; |
|
#endif |
|
public: |
|
hsMutex(); |
|
virtual ~hsMutex(); |
|
|
|
void Lock(); |
|
hsBool TryLock(); |
|
void Unlock(); |
|
}; |
|
|
|
class hsTempMutexLock { |
|
hsMutex* fMutex; |
|
public: |
|
hsTempMutexLock(hsMutex* mutex) : fMutex(mutex) |
|
{ |
|
fMutex->Lock(); |
|
} |
|
hsTempMutexLock(hsMutex& mutex) : fMutex(&mutex) |
|
{ |
|
fMutex->Lock(); |
|
} |
|
~hsTempMutexLock() |
|
{ |
|
fMutex->Unlock(); |
|
} |
|
}; |
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
|
|
class hsSemaphore { |
|
#if HS_BUILD_FOR_WIN32 |
|
HANDLE fSemaH; |
|
#elif HS_BUILD_FOR_UNIX |
|
#ifdef USE_SEMA |
|
sem_t* fPSema; |
|
bool fNamed; |
|
#else |
|
pthread_mutex_t fPMutex; |
|
pthread_cond_t fPCond; |
|
int32_t fCounter; |
|
#endif |
|
#endif |
|
public: |
|
hsSemaphore(int initialValue=0, const char* name=nil); |
|
~hsSemaphore(); |
|
|
|
hsBool TryWait(); |
|
hsBool Wait(hsMilliseconds timeToWait = kPosInfinity32); |
|
void Signal(); |
|
}; |
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
class hsEvent |
|
{ |
|
#if HS_BUILD_FOR_UNIX |
|
#ifndef PSEUDO_EVENT |
|
pthread_mutex_t fMutex; |
|
pthread_cond_t fCond; |
|
hsBool fTriggered; |
|
#else |
|
enum { kRead, kWrite }; |
|
int fFds[2]; |
|
hsMutex fWaitLock; |
|
hsMutex fSignalLock; |
|
#endif // PSEUDO_EVENT |
|
#elif HS_BUILD_FOR_WIN32 |
|
HANDLE fEvent; |
|
#endif |
|
public: |
|
hsEvent(); |
|
~hsEvent(); |
|
|
|
hsBool Wait(hsMilliseconds timeToWait = kPosInfinity32); |
|
void Signal(); |
|
}; |
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
class hsSleep |
|
{ |
|
public: |
|
#if HS_BUILD_FOR_UNIX |
|
static void Sleep(uint32_t millis); |
|
|
|
#elif HS_BUILD_FOR_WIN32 |
|
static void Sleep(uint32_t millis) { ::Sleep(millis); } |
|
|
|
#endif |
|
}; |
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
// Allows multiple readers, locks out readers for writing. |
|
|
|
class hsReaderWriterLock |
|
{ |
|
public: |
|
struct Callback |
|
{ |
|
virtual void OnLockingForRead( hsReaderWriterLock * lock ) {} |
|
virtual void OnLockedForRead( hsReaderWriterLock * lock ) {} |
|
virtual void OnUnlockingForRead( hsReaderWriterLock * lock ) {} |
|
virtual void OnUnlockedForRead( hsReaderWriterLock * lock ) {} |
|
virtual void OnLockingForWrite( hsReaderWriterLock * lock ) {} |
|
virtual void OnLockedForWrite( hsReaderWriterLock * lock ) {} |
|
virtual void OnUnlockingForWrite( hsReaderWriterLock * lock ) {} |
|
virtual void OnUnlockedForWrite( hsReaderWriterLock * lock ) {} |
|
}; |
|
hsReaderWriterLock( const char * name="<unnamed>", Callback * cb=nil ); |
|
~hsReaderWriterLock(); |
|
void LockForReading(); |
|
void UnlockForReading(); |
|
void LockForWriting(); |
|
void UnlockForWriting(); |
|
const char * GetName() const { return fName; } |
|
|
|
private: |
|
int fReaderCount; |
|
hsMutex fReaderCountLock; |
|
hsMutex fReaderLock; |
|
hsSemaphore fWriterSema; |
|
Callback * fCallback; |
|
char * fName; |
|
}; |
|
|
|
class hsLockForReading |
|
{ |
|
hsReaderWriterLock * fLock; |
|
public: |
|
hsLockForReading( hsReaderWriterLock & lock ): fLock( &lock ) |
|
{ |
|
fLock->LockForReading(); |
|
} |
|
hsLockForReading( hsReaderWriterLock * lock ): fLock( lock ) |
|
{ |
|
fLock->LockForReading(); |
|
} |
|
~hsLockForReading() |
|
{ |
|
fLock->UnlockForReading(); |
|
} |
|
}; |
|
|
|
class hsLockForWriting |
|
{ |
|
hsReaderWriterLock * fLock; |
|
public: |
|
hsLockForWriting( hsReaderWriterLock & lock ): fLock( &lock ) |
|
{ |
|
fLock->LockForWriting(); |
|
} |
|
hsLockForWriting( hsReaderWriterLock * lock ): fLock( lock ) |
|
{ |
|
fLock->LockForWriting(); |
|
} |
|
~hsLockForWriting() |
|
{ |
|
fLock->UnlockForWriting(); |
|
} |
|
}; |
|
|
|
#endif |
|
|
|
|