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/*
* Header used to adapt pthread-based POSIX code to Windows API threads.
*
* Copyright (C) 2009 Andrzej K. Haczewski <ahaczewski@gmail.com>
*/
#ifndef PTHREAD_H
#define PTHREAD_H
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
/*
* Defines that adapt Windows API threads to pthreads API
*/
#define pthread_mutex_t CRITICAL_SECTION
static inline int return_0(int i) {
return 0;
}
#define pthread_mutex_init(a,b) return_0((InitializeCriticalSection((a)), 0))
#define pthread_mutex_destroy(a) DeleteCriticalSection((a))
#define pthread_mutex_lock EnterCriticalSection
#define pthread_mutex_unlock LeaveCriticalSection
typedef int pthread_mutexattr_t;
#define pthread_mutexattr_init(a) (*(a) = 0)
#define pthread_mutexattr_destroy(a) do {} while (0)
#define pthread_mutexattr_settype(a, t) 0
#define PTHREAD_MUTEX_RECURSIVE 0
/*
* Implement simple condition variable for Windows threads, based on ACE
* implementation.
*
* See original implementation: http://bit.ly/1vkDjo
* ACE homepage: http://www.cse.wustl.edu/~schmidt/ACE.html
* See also: http://www.cse.wustl.edu/~schmidt/win32-cv-1.html
*/
typedef struct {
LONG waiters;
int was_broadcast;
CRITICAL_SECTION waiters_lock;
HANDLE sema;
HANDLE continue_broadcast;
} pthread_cond_t;
extern int pthread_cond_init(pthread_cond_t *cond, const void *unused);
extern int pthread_cond_destroy(pthread_cond_t *cond);
extern int pthread_cond_wait(pthread_cond_t *cond, CRITICAL_SECTION *mutex);
extern int pthread_cond_signal(pthread_cond_t *cond);
extern int pthread_cond_broadcast(pthread_cond_t *cond);
/*
* Simple thread creation implementation using pthread API
*/
typedef struct {
HANDLE handle;
void *(*start_routine)(void*);
void *arg;
DWORD tid;
} pthread_t;
extern int pthread_create(pthread_t *thread, const void *unused,
void *(*start_routine)(void*), void *arg);
/*
* To avoid the need of copying a struct, we use small macro wrapper to pass
* pointer to win32_pthread_join instead.
*/
#define pthread_join(a, b) win32_pthread_join(&(a), (b))
extern int win32_pthread_join(pthread_t *thread, void **value_ptr);
#define pthread_equal(t1, t2) ((t1).tid == (t2).tid)
extern pthread_t pthread_self(void);
static inline void NORETURN pthread_exit(void *ret)
{
ExitThread((DWORD)(intptr_t)ret);
}
typedef DWORD pthread_key_t;
static inline int pthread_key_create(pthread_key_t *keyp, void (*destructor)(void *value))
{
return (*keyp = TlsAlloc()) == TLS_OUT_OF_INDEXES ? EAGAIN : 0;
}
static inline int pthread_key_delete(pthread_key_t key)
{
return TlsFree(key) ? 0 : EINVAL;
}
static inline int pthread_setspecific(pthread_key_t key, const void *value)
{
return TlsSetValue(key, (void *)value) ? 0 : EINVAL;
}
static inline void *pthread_getspecific(pthread_key_t key)
{
return TlsGetValue(key);
}
#endif /* PTHREAD_H */
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