diff options
Diffstat (limited to 'sem_init.c')
| -rw-r--r-- | sem_init.c | 75 |
1 files changed, 36 insertions, 39 deletions
@@ -4,15 +4,13 @@ * Module: sem_init.c * * Purpose: - * Semaphores aren't actually part of the PThreads standard. + * Semaphores aren't actually part of PThreads. * They are defined by the POSIX Standard: * - * POSIX 1003.1b-1993 (POSIX.1b) + * POSIX 1003.1-2001 * * ------------------------------------------------------------- * - * -------------------------------------------------------------------------- - * * Pthreads-win32 - POSIX Threads Library for Win32 * Copyright(C) 1998 John E. Bossom * Copyright(C) 1999,2002 Pthreads-win32 contributors @@ -49,14 +47,12 @@ #include "semaphore.h" #include "implement.h" -#include <limits.h> - int sem_init (sem_t * sem, int pshared, unsigned int value) /* * ------------------------------------------------------ * DOCPUBLIC - * This function initializes an unnamed semaphore. the + * This function initializes a semaphore. The * initial value of the semaphore is 'value' * * PARAMETERS @@ -73,7 +69,7 @@ sem_init (sem_t * sem, int pshared, unsigned int value) * initial value of the semaphore counter * * DESCRIPTION - * This function initializes an unnamed semaphore. The + * This function initializes a semaphore. The * initial value of the semaphore is set to 'value'. * * RESULTS @@ -106,45 +102,46 @@ sem_init (sem_t * sem, int pshared, unsigned int value) s = (sem_t) calloc (1, sizeof (*s)); if (NULL == s) - { - result = ENOMEM; - } + { + result = ENOMEM; + } #ifdef NEED_SEM else - { - s->value = value; - s->event = CreateEvent (NULL, - FALSE, /* manual reset */ - FALSE, /* initial state */ - NULL); - if (0 == s->event) - { - result = ENOSPC; - } - else - { - if (value != 0) - { - SetEvent(s->event); - } - - InitializeCriticalSection(&s->sem_lock_cs); - } - } - + { + s->value = value; + s->event = CreateEvent (NULL, + FALSE, /* manual reset */ + FALSE, /* initial state */ + NULL); + + if (0 == s->event) + { + result = ENOSPC; + } + else + { + if (value != 0) + { + SetEvent(s->event); + } + + InitializeCriticalSection(&s->sem_lock_cs); + } + } + #else /* NEED_SEM */ s->sem = CreateSemaphore (NULL, /* Always NULL */ - value, /* Initial value */ - INT_MAX, /* Maximum value */ - NULL); /* Name */ - + value, /* Initial value */ + _POSIX_SEM_VALUE_MAX, /* Maximum value */ + NULL); /* Name */ + if (0 == s->sem) - { - result = ENOSPC; - } + { + result = ENOSPC; + } #endif /* NEED_SEM */ |