include/semaphore.h

   1 /* semaphore.h: POSIX semaphore interface
   2
   3    Copyright 2001 Red Hat, Inc.
   4
   5    Written by Robert Collins <rbtcollins@hotmail.com>
   6
   7    This file is part of Cygwin.
   8
   9    This software is a copyrighted work licensed under the terms of the
  10    Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
  11    details. */
  12
  13 #include <sys/types.h>
  14
  15 #ifndef _SEMAPHORE_H
  16 #define _SEMAPHORE_H
  17
  18 #ifdef __cplusplus
  19 extern "C"
  20 {
  21 #endif
  22
  23 #if !(defined (__INSIDE_CYGWIN__) || defined (__INSIDE_MSYS__))
  24   typedef void *sem_t;
  25 #endif
  26
  27 #define SEM_FAILED 0
  28 #define SEM_VALUE_MAX 1147483648
  29
  30 /* Semaphores */
  31   int sem_init (sem_t * sem, int pshared, unsigned int value);
  32   int sem_destroy (sem_t * sem);
  33   int sem_wait (sem_t * sem);
  34   int sem_trywait (sem_t * sem);
  35   int sem_post (sem_t * sem);
  36
  37 #ifdef __cplusplus
  38 }
  39 #endif
  40
  41 #endif                          /* _SEMAPHORE_H */