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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_THREADING_SUPPORT
#define _LIBCPP_THREADING_SUPPORT
#include <__config>
#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
#pragma GCC system_header
#endif
#ifndef _LIBCPP_HAS_NO_THREADS
#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
#include <pthread.h>
#include <sched.h>
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
// Mutex
#define _LIBCPP_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
typedef pthread_mutex_t __libcpp_mutex_t;
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_recursive_mutex_init(__libcpp_mutex_t* __m)
{
pthread_mutexattr_t attr;
int __ec = pthread_mutexattr_init(&attr);
if (__ec) return __ec;
__ec = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
if (__ec)
{
pthread_mutexattr_destroy(&attr);
return __ec;
}
__ec = pthread_mutex_init(__m, &attr);
if (__ec)
{
pthread_mutexattr_destroy(&attr);
return __ec;
}
__ec = pthread_mutexattr_destroy(&attr);
if (__ec)
{
pthread_mutex_destroy(__m);
return __ec;
}
return 0;
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_mutex_lock(__libcpp_mutex_t* __m)
{
return pthread_mutex_lock(__m);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_mutex_trylock(__libcpp_mutex_t* __m)
{
return pthread_mutex_trylock(__m);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_mutex_unlock(__libcpp_mutex_t* __m)
{
return pthread_mutex_unlock(__m);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_mutex_destroy(__libcpp_mutex_t* __m)
{
return pthread_mutex_destroy(__m);
}
// Condition variable
#define _LIBCPP_CONDVAR_INITIALIZER PTHREAD_COND_INITIALIZER
typedef pthread_cond_t __libcpp_condvar_t;
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_condvar_signal(__libcpp_condvar_t* __cv)
{
return pthread_cond_signal(__cv);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_condvar_broadcast(__libcpp_condvar_t* __cv)
{
return pthread_cond_broadcast(__cv);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_condvar_wait(__libcpp_condvar_t* __cv, __libcpp_mutex_t* __m)
{
return pthread_cond_wait(__cv, __m);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_condvar_timedwait(__libcpp_condvar_t* __cv, __libcpp_mutex_t* __m, timespec* __ts)
{
return pthread_cond_timedwait(__cv, __m, __ts);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_condvar_destroy(__libcpp_condvar_t* __cv)
{
return pthread_cond_destroy(__cv);
}
// Thread id
typedef pthread_t __libcpp_thread_id;
// Returns non-zero if the thread ids are equal, otherwise 0
inline _LIBCPP_ALWAYS_INLINE
bool __libcpp_thread_id_equal(__libcpp_thread_id t1, __libcpp_thread_id t2)
{
return pthread_equal(t1, t2) != 0;
}
// Returns non-zero if t1 < t2, otherwise 0
inline _LIBCPP_ALWAYS_INLINE
bool __libcpp_thread_id_less(__libcpp_thread_id t1, __libcpp_thread_id t2)
{
return t1 < t2;
}
// Thread
typedef pthread_t __libcpp_thread_t;
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_thread_create(__libcpp_thread_t* __t, void* (*__func)(void*), void* __arg)
{
return pthread_create(__t, 0, __func, __arg);
}
inline _LIBCPP_ALWAYS_INLINE
__libcpp_thread_id __libcpp_thread_get_current_id()
{
return pthread_self();
}
inline _LIBCPP_ALWAYS_INLINE
__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t* __t)
{
return *__t;
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_thread_join(__libcpp_thread_t* __t)
{
return pthread_join(*__t, 0);
}
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_thread_detach(__libcpp_thread_t* __t)
{
return pthread_detach(*__t);
}
inline _LIBCPP_ALWAYS_INLINE
void __libcpp_thread_yield()
{
sched_yield();
}
// Thread local storage
typedef pthread_key_t __libcpp_tl_key;
inline _LIBCPP_ALWAYS_INLINE
int __libcpp_tl_create(__libcpp_tl_key* __key, void (*__at_exit)(void*))
{
return pthread_key_create(__key, __at_exit);
}
inline _LIBCPP_ALWAYS_INLINE
void* __libcpp_tl_get(__libcpp_tl_key __key)
{
return pthread_getspecific(__key);
}
inline _LIBCPP_ALWAYS_INLINE
void __libcpp_tl_set(__libcpp_tl_key __key, void* __p)
{
pthread_setspecific(__key, __p);
}
#else // !_LIBCPP_HAS_THREAD_API_PTHREAD
#error "No thread API selected."
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_HAS_NO_THREADS
#endif // _LIBCPP_THREADING_SUPPORT
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