/*! ** ** 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__) #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