113 lines
2.2 KiB
C++
113 lines
2.2 KiB
C++
/*
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Bullet Continuous Collision Detection and Physics Library
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Copyright (c) 2007 Starbreeze Studios
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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Written by: Marten Svanfeldt
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*/
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#ifndef SPU_SYNC_H
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#define SPU_SYNC_H
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#include "PlatformDefinitions.h"
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#if defined(WIN32)
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#define WIN32_LEAN_AND_MEAN
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#ifdef _XBOX
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#include <Xtl.h>
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#else
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#include <Windows.h>
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#endif
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class btSpinlock
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{
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public:
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//typedef volatile LONG SpinVariable;
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typedef CRITICAL_SECTION SpinVariable;
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btSpinlock (SpinVariable* var)
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: spinVariable (var)
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{}
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void Init ()
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{
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//*spinVariable = 0;
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InitializeCriticalSection(spinVariable);
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}
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void Lock ()
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{
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EnterCriticalSection(spinVariable);
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}
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void Unlock ()
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{
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LeaveCriticalSection(spinVariable);
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}
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private:
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SpinVariable* spinVariable;
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};
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#elif defined (__CELLOS_LV2__)
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//#include <cell/atomic.h>
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#include <cell/sync/mutex.h>
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class btSpinlock
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{
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public:
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typedef CellSyncMutex SpinVariable;
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btSpinlock (SpinVariable* var)
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: spinVariable (var)
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{}
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#ifndef SPU
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void Init ()
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{
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//*spinVariable = 1;
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cellSyncMutexInitialize(spinVariable);
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}
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#endif
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#ifdef SPU
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void Lock ()
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{
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// lock semaphore
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/*while (cellAtomicTestAndDecr32(atomic_buf, (uint64_t)spinVariable) == 0)
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{
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};*/
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cellSyncMutexLock((uint64_t)spinVariable);
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}
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void Unlock ()
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{
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//cellAtomicIncr32(atomic_buf, (uint64_t)spinVariable);
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cellSyncMutexUnlock((uint64_t)spinVariable);
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}
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#endif
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private:
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SpinVariable* spinVariable;
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uint32_t atomic_buf[32] __attribute__((aligned(128)));
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};
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#endif
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#endif
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