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/*
* Copyright 2010-2017 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bx#license-bsd-2-clause
*/
#include "bx_p.h"
#include <bx/mutex.h>
#if BX_CONFIG_SUPPORTS_THREADING
#if BX_PLATFORM_ANDROID \
|| BX_PLATFORM_LINUX \
|| BX_PLATFORM_IOS \
|| BX_PLATFORM_OSX \
|| BX_PLATFORM_PS4 \
|| BX_PLATFORM_RPI
# include <pthread.h>
#elif BX_PLATFORM_WINDOWS \
|| BX_PLATFORM_WINRT \
|| BX_PLATFORM_XBOXONE
# include <windows.h>
# include <errno.h>
#endif // BX_PLATFORM_
namespace bx
{
#if BX_PLATFORM_WINDOWS \
|| BX_PLATFORM_XBOXONE \
|| BX_PLATFORM_WINRT
typedef CRITICAL_SECTION pthread_mutex_t;
typedef unsigned pthread_mutexattr_t;
inline int pthread_mutex_lock(pthread_mutex_t* _mutex)
{
EnterCriticalSection(_mutex);
return 0;
}
inline int pthread_mutex_unlock(pthread_mutex_t* _mutex)
{
LeaveCriticalSection(_mutex);
return 0;
}
inline int pthread_mutex_trylock(pthread_mutex_t* _mutex)
{
return TryEnterCriticalSection(_mutex) ? 0 : EBUSY;
}
inline int pthread_mutex_init(pthread_mutex_t* _mutex, pthread_mutexattr_t* /*_attr*/)
{
#if BX_PLATFORM_WINRT
InitializeCriticalSectionEx(_mutex, 4000, 0); // docs recommend 4000 spincount as sane default
#else
InitializeCriticalSection(_mutex);
#endif // BX_PLATFORM_
return 0;
}
inline int pthread_mutex_destroy(pthread_mutex_t* _mutex)
{
DeleteCriticalSection(_mutex);
return 0;
}
#endif // BX_PLATFORM_
Mutex::Mutex()
{
BX_STATIC_ASSERT(sizeof(pthread_mutex_t) <= sizeof(m_internal) );
pthread_mutexattr_t attr;
#if BX_PLATFORM_WINDOWS \
|| BX_PLATFORM_XBOXONE \
|| BX_PLATFORM_WINRT
#else
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
#endif // BX_PLATFORM_
pthread_mutex_t* handle = (pthread_mutex_t*)m_internal;
pthread_mutex_init(handle, &attr);
}
Mutex::~Mutex()
{
pthread_mutex_t* handle = (pthread_mutex_t*)m_internal;
pthread_mutex_destroy(handle);
}
void Mutex::lock()
{
pthread_mutex_t* handle = (pthread_mutex_t*)m_internal;
pthread_mutex_lock(handle);
}
void Mutex::unlock()
{
pthread_mutex_t* handle = (pthread_mutex_t*)m_internal;
pthread_mutex_unlock(handle);
}
} // namespace bx
#endif // BX_MUTEX_H_HEADER_GUARD
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