feat(physics): wire physx sdk into build

engine/third_party/physx/source/foundation/unix/FdUnixMutex.cpp

@@ -0,0 +1,199 @@
+// 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) 2008-2025 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#include "foundation/PxAssert.h"
+#include "foundation/PxErrorCallback.h"
+#include "foundation/PxUserAllocated.h"
+#include "foundation/PxMutex.h"
+#include "foundation/PxAtomic.h"
+#include "foundation/PxThread.h"
+
+#include <pthread.h>
+
+namespace physx
+{
+
+#if PX_LINUX
+
+#include <sched.h>
+
+static int gMutexProtocol = PTHREAD_PRIO_INHERIT;
+
+PX_FORCE_INLINE bool isLegalProtocol(const int mutexProtocol)
+{
+	return
+	(
+		(PTHREAD_PRIO_NONE == mutexProtocol) ||
+		(PTHREAD_PRIO_INHERIT == mutexProtocol) ||
+		((PTHREAD_PRIO_PROTECT == mutexProtocol) &&  ((sched_getscheduler(0) == SCHED_FIFO) || (sched_getscheduler(0) == SCHED_RR)))
+	);
+}
+
+bool PxSetMutexProtocol(const int mutexProtocol)
+{
+	if(isLegalProtocol(mutexProtocol))
+	{
+		gMutexProtocol = mutexProtocol;
+		return true;
+	}
+	return false;
+}
+
+int PxGetMutexProtocol()
+{
+	return gMutexProtocol;
+}
+
+#endif //PX_LINUX
+
+
+namespace
+{
+struct MutexUnixImpl
+{
+	pthread_mutex_t lock;
+	PxThread::Id owner;
+};
+
+MutexUnixImpl* getMutex(PxMutexImpl* impl)
+{
+	return reinterpret_cast<MutexUnixImpl*>(impl);
+}
+}
+
+PxMutexImpl::PxMutexImpl()
+{
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+#if PX_LINUX
+	pthread_mutexattr_setprotocol(&attr, gMutexProtocol);
+	pthread_mutexattr_setprioceiling(&attr, 0);
+#endif
+	pthread_mutex_init(&getMutex(this)->lock, &attr);
+	pthread_mutexattr_destroy(&attr);
+}
+
+PxMutexImpl::~PxMutexImpl()
+{
+	pthread_mutex_destroy(&getMutex(this)->lock);
+}
+
+void PxMutexImpl::lock()
+{
+	int err = pthread_mutex_lock(&getMutex(this)->lock);
+	PX_ASSERT(!err);
+	PX_UNUSED(err);
+
+#if PX_DEBUG
+	getMutex(this)->owner = PxThread::getId();
+#endif
+}
+
+bool PxMutexImpl::trylock()
+{
+	bool success = !pthread_mutex_trylock(&getMutex(this)->lock);
+#if PX_DEBUG
+	if(success)
+		getMutex(this)->owner = PxThread::getId();
+#endif
+	return success;
+}
+
+void PxMutexImpl::unlock()
+{
+#if PX_DEBUG
+	if(getMutex(this)->owner != PxThread::getId())
+	{
+		PxGetFoundation().error(PxErrorCode::eINVALID_OPERATION, __FILE__, __LINE__,
+		                              "Mutex must be unlocked only by thread that has already acquired lock");
+		return;
+	}
+#endif
+
+	int err = pthread_mutex_unlock(&getMutex(this)->lock);
+	PX_ASSERT(!err);
+	PX_UNUSED(err);
+}
+
+uint32_t PxMutexImpl::getSize()
+{
+	return sizeof(MutexUnixImpl);
+}
+
+class ReadWriteLockImpl
+{
+  public:
+	PxMutex mutex;
+	volatile int readerCounter;
+};
+
+PxReadWriteLock::PxReadWriteLock()
+{
+	mImpl = reinterpret_cast<ReadWriteLockImpl*>(PX_ALLOC(sizeof(ReadWriteLockImpl), "ReadWriteLockImpl"));
+	PX_PLACEMENT_NEW(mImpl, ReadWriteLockImpl);
+
+	mImpl->readerCounter = 0;
+}
+
+PxReadWriteLock::~PxReadWriteLock()
+{
+	mImpl->~ReadWriteLockImpl();
+	PX_FREE(mImpl);
+}
+
+void PxReadWriteLock::lockReader(bool takeLock)
+{
+	if(takeLock)
+		mImpl->mutex.lock();
+
+	PxAtomicIncrement(&mImpl->readerCounter);
+
+	if(takeLock)
+		mImpl->mutex.unlock();
+}
+
+void PxReadWriteLock::lockWriter()
+{
+	mImpl->mutex.lock();
+
+	// spin lock until no readers
+	while(mImpl->readerCounter);
+}
+
+void PxReadWriteLock::unlockReader()
+{
+	PxAtomicDecrement(&mImpl->readerCounter);
+}
+
+void PxReadWriteLock::unlockWriter()
+{
+	mImpl->mutex.unlock();
+}
+
+} // namespace physx