1 /* 2 * Code for simulating pthreads API on Windows. This is Git-specific, 3 * but it is enough for Numexpr needs too. 4 * 5 * Copyright (C) 2009 Andrzej K. Haczewski <ahaczewski@gmail.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 * 25 * DISCLAIMER: The implementation is Git-specific, it is subset of original 26 * Pthreads API, without lots of other features that Git doesn't use. 27 * Git also makes sure that the passed arguments are valid, so there's 28 * no need for double-checking. 29 */ 30 31 #ifndef PTHREAD_H 32 #define PTHREAD_H 33 34 #ifndef WIN32_LEAN_AND_MEAN 35 #define WIN32_LEAN_AND_MEAN 36 #endif 37 38 #include <windows.h> 39 40 /* 41 * Defines that adapt Windows API threads to pthreads API 42 */ 43 #define pthread_mutex_t CRITICAL_SECTION 44 45 #define pthread_mutex_init(a,b) InitializeCriticalSection((a)) 46 #define pthread_mutex_destroy(a) DeleteCriticalSection((a)) 47 #define pthread_mutex_lock EnterCriticalSection 48 #define pthread_mutex_unlock LeaveCriticalSection 49 50 /* 51 * Implement simple condition variable for Windows threads, based on ACE 52 * implementation. 53 */ 54 typedef struct { 55 LONG waiters; 56 int was_broadcast; 57 CRITICAL_SECTION waiters_lock; 58 HANDLE sema; 59 HANDLE continue_broadcast; 60 } pthread_cond_t; 61 62 extern int pthread_cond_init(pthread_cond_t *cond, const void *unused); 63 extern int pthread_cond_destroy(pthread_cond_t *cond); 64 extern int pthread_cond_wait(pthread_cond_t *cond, CRITICAL_SECTION *mutex); 65 extern int pthread_cond_signal(pthread_cond_t *cond); 66 extern int pthread_cond_broadcast(pthread_cond_t *cond); 67 68 /* 69 * Simple thread creation implementation using pthread API 70 */ 71 typedef struct { 72 HANDLE handle; 73 void *(*start_routine)(void*); 74 void *arg; 75 } pthread_t; 76 77 extern int pthread_create(pthread_t *thread, const void *unused, 78 void *(*start_routine)(void*), void *arg); 79 80 /* 81 * To avoid the need of copying a struct, we use small macro wrapper to pass 82 * pointer to win32_pthread_join instead. 83 */ 84 #define pthread_join(a, b) win32_pthread_join(&(a), (b)) 85 86 extern int win32_pthread_join(pthread_t *thread, void **value_ptr); 87 88 #endif /* PTHREAD_H */ 89