initial commit, 4.5 stable

thirdparty/vhacd/inc/vhacdMutex.h

@@ -0,0 +1,148 @@
+/*!
+**
+** Copyright (c) 2009 by John W. Ratcliff mailto:jratcliffscarab@gmail.com
+**
+** Portions of this source has been released with the PhysXViewer application, as well as
+** Rocket, CreateDynamics, ODF, and as a number of sample code snippets.
+**
+** If you find this code useful or you are feeling particularily generous I would
+** ask that you please go to http://www.amillionpixels.us and make a donation
+** to Troy DeMolay.
+**
+** DeMolay is a youth group for young men between the ages of 12 and 21.
+** It teaches strong moral principles, as well as leadership skills and
+** public speaking.  The donations page uses the 'pay for pixels' paradigm
+** where, in this case, a pixel is only a single penny.  Donations can be
+** made for as small as $4 or as high as a $100 block.  Each person who donates
+** will get a link to their own site as well as acknowledgement on the
+** donations blog located here http://www.amillionpixels.blogspot.com/
+**
+** If you wish to contact me you can use the following methods:
+**
+** Skype ID: jratcliff63367
+** Yahoo: jratcliff63367
+** AOL: jratcliff1961
+** email: jratcliffscarab@gmail.com
+**
+**
+** The MIT license:
+**
+** Permission is hereby granted, free of charge, to any person obtaining a copy
+** of this software and associated documentation files (the "Software"), to deal
+** in the Software without restriction, including without limitation the rights
+** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+** copies of the Software, and to permit persons to whom the Software is furnished
+** to do so, subject to the following conditions:
+**
+** The above copyright notice and this permission notice shall be included in all
+** copies or substantial portions of the Software.
+
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+** WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+** CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+#pragma once
+#ifndef VHACD_MUTEX_H
+#define VHACD_MUTEX_H
+
+#if defined(WIN32)
+
+#ifndef _WIN32_WINNT
+#define _WIN32_WINNT 0x400
+#endif
+#include <windows.h>
+#pragma comment(lib, "winmm.lib")
+#endif
+
+#if defined(__linux__)
+//#include <sys/time.h>
+#include <errno.h>
+#include <time.h>
+#include <unistd.h>
+#define __stdcall
+#endif
+
+#if defined(__APPLE__) || defined(__linux__)
+#include <pthread.h>
+#endif
+
+#if defined(__APPLE__) || !defined(__GLIBC__)
+#define PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE
+#endif
+
+#define VHACD_DEBUG
+
+//#define VHACD_NDEBUG
+#ifdef VHACD_NDEBUG
+#define VHACD_VERIFY(x) (x)
+#else
+#define VHACD_VERIFY(x) assert((x))
+#endif
+
+namespace VHACD {
+class Mutex {
+public:
+    Mutex(void)
+    {
+#if defined(WIN32) || defined(_XBOX)
+        InitializeCriticalSection(&m_mutex);
+#elif defined(__APPLE__) || defined(__linux__)
+        pthread_mutexattr_t mutexAttr; // Mutex Attribute
+        VHACD_VERIFY(pthread_mutexattr_init(&mutexAttr) == 0);
+        VHACD_VERIFY(pthread_mutexattr_settype(&mutexAttr, PTHREAD_MUTEX_RECURSIVE_NP) == 0);
+        VHACD_VERIFY(pthread_mutex_init(&m_mutex, &mutexAttr) == 0);
+        VHACD_VERIFY(pthread_mutexattr_destroy(&mutexAttr) == 0);
+#endif
+    }
+    ~Mutex(void)
+    {
+#if defined(WIN32) || defined(_XBOX)
+        DeleteCriticalSection(&m_mutex);
+#elif defined(__APPLE__) || defined(__linux__)
+        VHACD_VERIFY(pthread_mutex_destroy(&m_mutex) == 0);
+#endif
+    }
+    void Lock(void)
+    {
+#if defined(WIN32) || defined(_XBOX)
+        EnterCriticalSection(&m_mutex);
+#elif defined(__APPLE__) || defined(__linux__)
+        VHACD_VERIFY(pthread_mutex_lock(&m_mutex) == 0);
+#endif
+    }
+    bool TryLock(void)
+    {
+#if defined(WIN32) || defined(_XBOX)
+        bool bRet = false;
+        //assert(("TryEnterCriticalSection seems to not work on XP???", 0));
+        bRet = TryEnterCriticalSection(&m_mutex) ? true : false;
+        return bRet;
+#elif defined(__APPLE__) || defined(__linux__)
+        int32_t result = pthread_mutex_trylock(&m_mutex);
+        return (result == 0);
+#endif
+    }
+
+    void Unlock(void)
+    {
+#if defined(WIN32) || defined(_XBOX)
+        LeaveCriticalSection(&m_mutex);
+#elif defined(__APPLE__) || defined(__linux__)
+        VHACD_VERIFY(pthread_mutex_unlock(&m_mutex) == 0);
+#endif
+    }
+
+private:
+#if defined(WIN32) || defined(_XBOX)
+    CRITICAL_SECTION m_mutex;
+#elif defined(__APPLE__) || defined(__linux__)
+    pthread_mutex_t m_mutex;
+#endif
+};
+}
+#endif // VHACD_MUTEX_H