src/unix/pthread.h

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7
   8 #ifndef INCLUDE_unix_pthread_h__
   9 #define INCLUDE_unix_pthread_h__
  10
  11 typedef struct {
  12         pthread_t thread;
  13 } git_thread;
  14
  15 GIT_INLINE(int) git_threads_global_init(void) { return 0; }
  16
  17 #define git_thread_create(git_thread_ptr, start_routine, arg) \
  18         pthread_create(&(git_thread_ptr)->thread, NULL, start_routine, arg)
  19 #define git_thread_join(git_thread_ptr, status) \
  20         pthread_join((git_thread_ptr)->thread, status)
  21 #define git_thread_currentid() ((size_t)(pthread_self()))
  22 #define git_thread_exit(retval) pthread_exit(retval)
  23
  24 /* Git Mutex */
  25 #define git_mutex pthread_mutex_t
  26 #define git_mutex_init(a)       pthread_mutex_init(a, NULL)
  27 #define git_mutex_lock(a)       pthread_mutex_lock(a)
  28 #define git_mutex_unlock(a)     pthread_mutex_unlock(a)
  29 #define git_mutex_free(a)       pthread_mutex_destroy(a)
  30
  31 /* Git condition vars */
  32 #define git_cond pthread_cond_t
  33 #define git_cond_init(c)        pthread_cond_init(c, NULL)
  34 #define git_cond_free(c)        pthread_cond_destroy(c)
  35 #define git_cond_wait(c, l)     pthread_cond_wait(c, l)
  36 #define git_cond_signal(c)      pthread_cond_signal(c)
  37 #define git_cond_broadcast(c)   pthread_cond_broadcast(c)
  38
  39 /* Pthread (-ish) rwlock
  40  *
  41  * This differs from normal pthreads rwlocks in two ways:
  42  * 1. Separate APIs for releasing read locks and write locks (as
  43  *    opposed to the pure POSIX API which only has one unlock fn)
  44  * 2. You should not use recursive read locks (i.e. grabbing a read
  45  *    lock in a thread that already holds a read lock) because the
  46  *    Windows implementation doesn't support it
  47  */
  48 #define git_rwlock              pthread_rwlock_t
  49 #define git_rwlock_init(a)      pthread_rwlock_init(a, NULL)
  50 #define git_rwlock_rdlock(a)    pthread_rwlock_rdlock(a)
  51 #define git_rwlock_rdunlock(a)  pthread_rwlock_unlock(a)
  52 #define git_rwlock_wrlock(a)    pthread_rwlock_wrlock(a)
  53 #define git_rwlock_wrunlock(a)  pthread_rwlock_unlock(a)
  54 #define git_rwlock_free(a)      pthread_rwlock_destroy(a)
  55 #define GIT_RWLOCK_STATIC_INIT  PTHREAD_RWLOCK_INITIALIZER
  56
  57 #endif