| 1 | /* |
| 2 | * Header used to adapt pthread-based POSIX code to Windows API threads. |
| 3 | * |
| 4 | * Copyright (C) 2009 Andrzej K. Haczewski <ahaczewski@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | #ifndef PTHREAD_H |
| 8 | #define PTHREAD_H |
| 9 | |
| 10 | #ifndef WIN32_LEAN_AND_MEAN |
| 11 | #define WIN32_LEAN_AND_MEAN |
| 12 | #endif |
| 13 | |
| 14 | #include <windows.h> |
| 15 | |
| 16 | /* |
| 17 | * Defines that adapt Windows API threads to pthreads API |
| 18 | */ |
| 19 | #define pthread_mutex_t CRITICAL_SECTION |
| 20 | |
| 21 | static inline int return_0(int i UNUSED) { |
| 22 | return 0; |
| 23 | } |
| 24 | #define pthread_mutex_init(a,b) return_0((InitializeCriticalSection((a)), 0)) |
| 25 | #define pthread_mutex_destroy(a) DeleteCriticalSection((a)) |
| 26 | #define pthread_mutex_lock EnterCriticalSection |
| 27 | #define pthread_mutex_unlock LeaveCriticalSection |
| 28 | |
| 29 | typedef int pthread_mutexattr_t; |
| 30 | #define pthread_mutexattr_init(a) (*(a) = 0) |
| 31 | #define pthread_mutexattr_destroy(a) do {} while (0) |
| 32 | #define pthread_mutexattr_settype(a, t) 0 |
| 33 | #define PTHREAD_MUTEX_RECURSIVE 0 |
| 34 | |
| 35 | #define pthread_cond_t CONDITION_VARIABLE |
| 36 | |
| 37 | #define pthread_cond_init(a,b) return_0((InitializeConditionVariable((a)), 0)) |
| 38 | #define pthread_cond_destroy(a) do {} while (0) |
| 39 | #define pthread_cond_signal WakeConditionVariable |
| 40 | #define pthread_cond_broadcast WakeAllConditionVariable |
| 41 | |
| 42 | /* |
| 43 | * Simple thread creation implementation using pthread API |
| 44 | */ |
| 45 | typedef struct { |
| 46 | HANDLE handle; |
| 47 | void *(*start_routine)(void*); |
| 48 | void *arg; |
| 49 | DWORD tid; |
| 50 | } pthread_t; |
| 51 | |
| 52 | int pthread_create(pthread_t *thread, const void *unused, |
| 53 | void *(*start_routine)(void*), void *arg); |
| 54 | |
| 55 | /* |
| 56 | * To avoid the need of copying a struct, we use small macro wrapper to pass |
| 57 | * pointer to win32_pthread_join instead. |
| 58 | */ |
| 59 | #define pthread_join(a, b) win32_pthread_join(&(a), (b)) |
| 60 | |
| 61 | int win32_pthread_join(pthread_t *thread, void **value_ptr); |
| 62 | |
| 63 | #define pthread_equal(t1, t2) ((t1).tid == (t2).tid) |
| 64 | pthread_t pthread_self(void); |
| 65 | |
| 66 | int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); |
| 67 | int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, |
| 68 | const struct timespec *abstime); |
| 69 | |
| 70 | static inline void NORETURN pthread_exit(void *ret) |
| 71 | { |
| 72 | _endthreadex((unsigned)(uintptr_t)ret); |
| 73 | } |
| 74 | |
| 75 | typedef DWORD pthread_key_t; |
| 76 | static inline int pthread_key_create(pthread_key_t *keyp, void (*destructor)(void *value) UNUSED) |
| 77 | { |
| 78 | return (*keyp = TlsAlloc()) == TLS_OUT_OF_INDEXES ? EAGAIN : 0; |
| 79 | } |
| 80 | |
| 81 | static inline int pthread_key_delete(pthread_key_t key) |
| 82 | { |
| 83 | return TlsFree(key) ? 0 : EINVAL; |
| 84 | } |
| 85 | |
| 86 | static inline int pthread_setspecific(pthread_key_t key, const void *value) |
| 87 | { |
| 88 | return TlsSetValue(key, (void *)value) ? 0 : EINVAL; |
| 89 | } |
| 90 | |
| 91 | static inline void *pthread_getspecific(pthread_key_t key) |
| 92 | { |
| 93 | return TlsGetValue(key); |
| 94 | } |
| 95 | |
| 96 | #ifndef __MINGW64_VERSION_MAJOR |
| 97 | static inline int pthread_sigmask(int how, const sigset_t *set, sigset_t *oset) |
| 98 | { |
| 99 | return 0; |
| 100 | } |
| 101 | #endif |
| 102 | |
| 103 | #endif /* PTHREAD_H */ |