Revision control
++ // Copyright 2009-2021 Intel Corporation
++ // SPDX-License-Identifier: Apache-2.0
++
++ #include "mutex.h"
++ #include "regression.h"
++
++ #if defined(__WIN32__) && !defined(PTHREADS_WIN32)
++
++ #define WIN32_LEAN_AND_MEAN
++ #include <windows.h>
++
++ namespace embree
++ {
++ MutexSys::MutexSys() { mutex = new CRITICAL_SECTION; InitializeCriticalSection((CRITICAL_SECTION*)mutex); }
++ MutexSys::~MutexSys() { DeleteCriticalSection((CRITICAL_SECTION*)mutex); delete (CRITICAL_SECTION*)mutex; }
++ void MutexSys::lock() { EnterCriticalSection((CRITICAL_SECTION*)mutex); }
++ bool MutexSys::try_lock() { return TryEnterCriticalSection((CRITICAL_SECTION*)mutex) != 0; }
++ void MutexSys::unlock() { LeaveCriticalSection((CRITICAL_SECTION*)mutex); }
++ }
++ #endif
++
++ #if defined(__UNIX__) || defined(PTHREADS_WIN32)
++ #include <pthread.h>
++ namespace embree
++ {
++ /*! system mutex using pthreads */
++ MutexSys::MutexSys()
++ {
++ mutex = new pthread_mutex_t;
++ if (pthread_mutex_init((pthread_mutex_t*)mutex, nullptr) != 0)
++ THROW_RUNTIME_ERROR("pthread_mutex_init failed");
++ }
++
++ MutexSys::~MutexSys()
++ {
++ MAYBE_UNUSED bool ok = pthread_mutex_destroy((pthread_mutex_t*)mutex) == 0;
++ assert(ok);
++ delete (pthread_mutex_t*)mutex;
++ }
++
++ void MutexSys::lock()
++ {
++ if (pthread_mutex_lock((pthread_mutex_t*)mutex) != 0)
++ THROW_RUNTIME_ERROR("pthread_mutex_lock failed");
++ }
++
++ bool MutexSys::try_lock() {
++ return pthread_mutex_trylock((pthread_mutex_t*)mutex) == 0;
++ }
++
++ void MutexSys::unlock()
++ {
++ if (pthread_mutex_unlock((pthread_mutex_t*)mutex) != 0)
++ THROW_RUNTIME_ERROR("pthread_mutex_unlock failed");
++ }
++ };
++ #endif