/* * 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 #define pthread_mutex_init(a,b) (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 int pthread_exit(void *ret) { ExitThread((DWORD)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 */