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2025-11-28 23:13:44 +05:30
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214
physx/snippets/snippetutils/SnippetUtils.cpp Normal file
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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
#include "SnippetUtils.h"
#include "foundation/PxSimpleTypes.h"
#include "CmPhysXCommon.h"
#include "PsAtomic.h"
#include "PsString.h"
#include "PsSync.h"
#include "PsThread.h"
#include "PsTime.h"
#include "PsMutex.h"
#include "PsAllocator.h"
#include "extensions/PxDefaultAllocator.h"
namespace physx
{
namespace
{
PxDefaultAllocator gUtilAllocator;
struct UtilAllocator // since we're allocating internal classes here, make sure we align properly
{
void* allocate(size_t size,const char* file, PxU32 line) { return gUtilAllocator.allocate(size, NULL, file, int(line)); }
void deallocate(void* ptr) { gUtilAllocator.deallocate(ptr); }
};
}
namespace SnippetUtils
{
PxI32 atomicIncrement(volatile PxI32* val)
{
return Ps::atomicIncrement(val);
}
PxI32 atomicDecrement(volatile PxI32* val)
{
return Ps::atomicDecrement(val);
}
//******************************************************************************//
PxU32 getNbPhysicalCores()
{
return Ps::Thread::getNbPhysicalCores();
}
//******************************************************************************//
PxU32 getThreadId()
{
return static_cast<PxU32>(Ps::Thread::getId());
}
//******************************************************************************//
PxU64 getCurrentTimeCounterValue()
{
return Ps::Time::getCurrentCounterValue();
}
PxReal getElapsedTimeInMilliseconds(const PxU64 elapsedTime)
{
return Ps::Time::getCounterFrequency().toTensOfNanos(elapsedTime)/(100.0f * 1000.0f);
}
PxReal getElapsedTimeInMicroSeconds(const PxU64 elapsedTime)
{
return Ps::Time::getCounterFrequency().toTensOfNanos(elapsedTime)/(100.0f);
}
//******************************************************************************//
struct Sync: public Ps::SyncT<UtilAllocator> {};
Sync* syncCreate()
{
return new(gUtilAllocator.allocate(sizeof(Sync), 0, 0, 0)) Sync();
}
void syncWait(Sync* sync)
{
sync->wait();
}
void syncSet(Sync* sync)
{
sync->set();
}
void syncReset(Sync* sync)
{
sync->reset();
}
void syncRelease(Sync* sync)
{
sync->~Sync();
gUtilAllocator.deallocate(sync);
}
//******************************************************************************//
struct Thread: public Ps::ThreadT<UtilAllocator>
{
Thread(ThreadEntryPoint entryPoint, void* data):
Ps::ThreadT<UtilAllocator>(),
mEntryPoint(entryPoint),
mData(data)
{
}
virtual void execute(void)
{
mEntryPoint(mData);
}
ThreadEntryPoint mEntryPoint;
void* mData;
};
Thread* threadCreate(ThreadEntryPoint entryPoint, void* data)
{
Thread* createThread = static_cast<Thread*>(gUtilAllocator.allocate(sizeof(Thread), 0, 0, 0));
PX_PLACEMENT_NEW(createThread, Thread(entryPoint, data));
createThread->start();
return createThread;
}
void threadQuit(Thread* thread)
{
thread->quit();
}
void threadSignalQuit(Thread* thread)
{
thread->signalQuit();
}
bool threadWaitForQuit(Thread* thread)
{
return thread->waitForQuit();
}
bool threadQuitIsSignalled(Thread* thread)
{
return thread->quitIsSignalled();
}
void threadRelease(Thread* thread)
{
thread->~Thread();
gUtilAllocator.deallocate(thread);
}
//******************************************************************************//
struct Mutex: public Ps::MutexT<UtilAllocator> {};
Mutex* mutexCreate()
{
return new(gUtilAllocator.allocate(sizeof(Mutex), 0, 0, 0)) Mutex();
}
void mutexLock(Mutex* mutex)
{
mutex->lock();
}
void mutexUnlock(Mutex* mutex)
{
mutex->unlock();
}
void mutexRelease(Mutex* mutex)
{
mutex->~Mutex();
gUtilAllocator.deallocate(mutex);
}
} // namespace physXUtils
} // namespace physx

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physx/snippets/snippetutils/SnippetUtils.h Normal file
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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
#include "foundation/PxSimpleTypes.h"
#define PX_RELEASE(x) if(x) { x->release(); x = NULL; }
namespace physx
{
namespace SnippetUtils
{
/* Increment the specified location. Return the incremented value. */
PxI32 atomicIncrement(volatile PxI32* val);
/* Decrement the specified location. Return the decremented value. */
PxI32 atomicDecrement(volatile PxI32* val);
//******************************************************************************//
/* Return the number of physical cores (does not include hyper-threaded cores), returns 0 on failure. */
PxU32 getNbPhysicalCores();
//******************************************************************************//
/* Return the id of a thread. */
PxU32 getThreadId();
//******************************************************************************//
/* Return the current time */
PxU64 getCurrentTimeCounterValue();
/* Convert to milliseconds an elapsed time computed from the difference of the times returned from two calls to getCurrentTimeCounterValue. */
PxReal getElapsedTimeInMilliseconds(const PxU64 elapsedTime);
/* Convert to microseconds an elapsed time computed from the difference of the times returned from two calls to getCurrentTimeCounterValue. */
PxReal getElapsedTimeInMicroSeconds(const PxU64 elapsedTime);
//******************************************************************************//
struct Sync;
/* Create a sync object. Returns a unique handle to the sync object so that it may be addressed through syncWait etc. */
Sync* syncCreate();
/* Wait indefinitely until the specified sync object is signaled. */
void syncWait(Sync* sync);
/* Signal the specified synchronization object, waking all threads waiting on it. */
void syncSet(Sync* sync);
/** Reset the specified synchronization object. */
void syncReset(Sync* sync);
/* Release the specified sync object so that it may be reused with syncCreate. */
void syncRelease(Sync* sync);
//******************************************************************************//
struct Thread;
/* Prototype of callback passed to threadCreate. */
typedef void (*ThreadEntryPoint)(void*);
/* Create a thread object and return a unique handle to the thread object so that it may be addressed through threadStart etc.
entryPoint implements ThreadEntryPoint and data will be passed as a function argument, POSIX-style. */
Thread* threadCreate(ThreadEntryPoint entryPoint, void* data);
/* Cleanly shut down the specified thread. Called in the context of the spawned thread. */
void threadQuit(Thread* thread);
/* Stop the specified thread. Signals the spawned thread that it should stop, so the
thread should check regularly. */
void threadSignalQuit(Thread* thread);
/* Wait for the specified thread to stop. Should be called in the context of the spawning
thread. Returns false if the thread has not been started.*/
bool threadWaitForQuit(Thread* thread);
/* Check whether the thread is signalled to quit. Called in the context of the
spawned thread. */
bool threadQuitIsSignalled(Thread* thread);
/* Release the specified thread object so that it may be reused with threadCreate. */
void threadRelease(Thread* thread);
//******************************************************************************//
struct Mutex;
/* Create a mutex object and return a unique handle to the mutex object so that it may be addressed through mutexLock etc. */
Mutex* mutexCreate();
/* Acquire (lock) the specified mutex. If the mutex is already locked by another thread, this method blocks until the mutex is unlocked.*/
void mutexLock(Mutex* mutex);
/* Release (unlock) the specified mutex, the calling thread must have previously called lock() or method will error. */
void mutexUnlock(Mutex* mutex);
/* Release the specified mutex so that it may be reused with mutexCreate. */
void mutexRelease(Mutex* mutex);
}
}