From 458aac8598b866ceb615304db637cf624334f271 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Franti=C5=A1ek=20Dvo=C5=99=C3=A1k?= Date: Mon, 5 Sep 2005 17:10:36 +0000 Subject: *BUGFIX* *DRUMS* removing internal old phreads-win32 and zlib CVS patchset: 7721 CVS date: 2005/09/05 17:10:36 --- win32/contrib/pthreads/semaphore.c | 557 ------------------------------------- 1 file changed, 557 deletions(-) delete mode 100644 win32/contrib/pthreads/semaphore.c (limited to 'win32/contrib/pthreads/semaphore.c') diff --git a/win32/contrib/pthreads/semaphore.c b/win32/contrib/pthreads/semaphore.c deleted file mode 100644 index 2f43d05c9..000000000 --- a/win32/contrib/pthreads/semaphore.c +++ /dev/null @@ -1,557 +0,0 @@ -/* - * ------------------------------------------------------------- - * - * Module: semaphore.c - * - * Purpose: - * Semaphores aren't actually part of the PThreads standard. - * They are defined by the POSIX Standard: - * - * POSIX 1003.1b-1993 (POSIX.1b) - * - * ------------------------------------------------------------- - * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright (C) 1998 - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, - * MA 02111-1307, USA - */ - -/* ignore warning "unreferenced formal parameter" */ -#ifdef _MSC_VER -#pragma warning( disable : 4100 ) -#endif - -#include "pthread.h" -#include "semaphore.h" -#include "implement.h" - -int -sem_init (sem_t * sem, int pshared, unsigned int value) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function initializes an unnamed semaphore. the - * initial value of the semaphore is 'value' - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * pshared - * if zero, this semaphore may only be shared between - * threads in the same process. - * if nonzero, the semaphore can be shared between - * processes - * - * value - * initial value of the semaphore counter - * - * DESCRIPTION - * This function initializes an unnamed semaphore. The - * initial value of the semaphore is set to 'value'. - * - * RESULTS - * 0 successfully created semaphore, - * -1 failed, error in errno - * ERRNO - * EINVAL 'sem' is not a valid semaphore, - * ENOSPC a required resource has been exhausted, - * ENOSYS semaphores are not supported, - * EPERM the process lacks appropriate privilege - * - * ------------------------------------------------------ - */ -{ - int result = 0; - sem_t s; - - if (pshared != 0) - { - /* - * Creating a semaphore that can be shared between - * processes - */ - result = EPERM; - - } - else - { - s = (sem_t) calloc (1, sizeof (*s)); - -#ifdef NEED_SEM - - if (NULL == s) - { - result = ENOMEM; - } - 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); - } - -#else /* NEED_SEM */ - - s->sem = CreateSemaphore (NULL, /* Always NULL */ - value, /* Initial value */ - 0x7FFFFFFFL, /* Maximum value */ - NULL); /* Name */ - - if (0 == s->sem) - { - result = ENOSPC; - } - -#endif /* NEED_SEM */ - - } - - if (result != 0) - { - errno = result; - return -1; - } - - *sem = s; - - return 0; - -} /* sem_init */ - - -int -sem_destroy (sem_t * sem) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function destroys an unnamed semaphore. - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * DESCRIPTION - * This function destroys an unnamed semaphore. - * - * RESULTS - * 0 successfully destroyed semaphore, - * -1 failed, error in errno - * ERRNO - * EINVAL 'sem' is not a valid semaphore, - * ENOSYS semaphores are not supported, - * EBUSY threads (or processes) are currently - * blocked on 'sem' - * - * ------------------------------------------------------ - */ -{ - int result = 0; - sem_t s; - - if (sem == NULL || *sem == NULL) - { - result = EINVAL; - } - else - { - s = *sem; - *sem = NULL; - -#ifdef NEED_SEM - - if (! CloseHandle(s->event)) - { - *sem = s; - result = EINVAL; - } - else - { - DeleteCriticalSection(&s->sem_lock_cs); - free(s); - } - -#else /* NEED_SEM */ - - if (! CloseHandle (s->sem)) - { - *sem = s; - result = EINVAL; - } - -#endif /* NEED_SEM */ - - } - - if (result != 0) - { - errno = result; - return -1; - } - - return 0; - -} /* sem_destroy */ - - -int -sem_trywait (sem_t * sem) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function tries to wait on a semaphore. - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * DESCRIPTION - * This function tries to wait on a semaphore. If the - * semaphore value is greater than zero, it decreases - * its value by one. If the semaphore value is zero, then - * this function returns immediately with the error EAGAIN - * - * RESULTS - * 0 successfully decreased semaphore, - * -1 failed, error in errno - * ERRNO - * EAGAIN the semaphore was already locked, - * EINVAL 'sem' is not a valid semaphore, - * ENOSYS semaphores are not supported, - * EINTR the function was interrupted by a signal, - * EDEADLK a deadlock condition was detected. - * - * ------------------------------------------------------ - */ -{ -#ifdef NEED_SEM - - /* - * not yet implemented! - */ - int result = EINVAL; - return -1; - -#else /* NEED_SEM */ - - int result = 0; - - if (sem == NULL || *sem == NULL) - { - result = EINVAL; - } - else if (WaitForSingleObject ((*sem)->sem, 0) == WAIT_TIMEOUT) - { - result = EAGAIN; - } - - if (result != 0) - { - errno = result; - return -1; - } - - return 0; - -#endif /* NEED_SEM */ - -} /* sem_trywait */ - - -#ifdef NEED_SEM - -void -ptw32_decrease_semaphore(sem_t * sem) -{ - register sem_t s = *sem; - - EnterCriticalSection(&s->sem_lock_cs); - - if (s->value != 0) - { - s->value--; - if (s->value != 0) - { - SetEvent(s->event); - } - } - else - { - /* this case should not happen! */ - } - - LeaveCriticalSection(&s->sem_lock_cs); -} - -BOOL -ptw32_increase_semaphore(sem_t * sem, unsigned int n) -{ - BOOL result; - register sem_t s = *sem; - - EnterCriticalSection(&s->sem_lock_cs); - - if (s->value + n > s->value) - { - s->value += n; - SetEvent(s->event); - result = TRUE; - } - else - { - result = FALSE; - } - - LeaveCriticalSection(&s->sem_lock_cs); - return result; -} - -#endif /* NEED_SEM */ - -int -sem_wait (sem_t * sem) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function waits on a semaphore. - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * DESCRIPTION - * This function waits on a semaphore. If the - * semaphore value is greater than zero, it decreases - * its value by one. If the semaphore value is zero, then - * the calling thread (or process) is blocked until it can - * successfully decrease the value or until interrupted by - * a signal. - * - * RESULTS - * 0 successfully decreased semaphore, - * -1 failed, error in errno - * ERRNO - * EINVAL 'sem' is not a valid semaphore, - * ENOSYS semaphores are not supported, - * EINTR the function was interrupted by a signal, - * EDEADLK a deadlock condition was detected. - * - * ------------------------------------------------------ - */ -{ - int result = 0; - - if (sem == NULL || *sem == NULL) - { - result = EINVAL; - } - else - { - -#ifdef NEED_SEM - - result = pthreadCancelableWait ((*sem)->event); - -#else /* NEED_SEM */ - - result = pthreadCancelableWait ((*sem)->sem); - -#endif /* NEED_SEM */ - - } - - if (result != 0) - { - errno = result; - return -1; - } - -#ifdef NEED_SEM - - ptw32_decrease_semaphore(sem); - -#endif /* NEED_SEM */ - - return 0; - -} /* sem_wait */ - - -int -sem_post (sem_t * sem) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function posts a wakeup to a semaphore. - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * DESCRIPTION - * This function posts a wakeup to a semaphore. If there - * are waiting threads (or processes), one is awakened; - * otherwise, the semaphore value is incremented by one. - * - * RESULTS - * 0 successfully posted semaphore, - * -1 failed, error in errno - * ERRNO - * EINVAL 'sem' is not a valid semaphore, - * ENOSYS semaphores are not supported, - * - * ------------------------------------------------------ - */ -{ - int result = 0; - - if (sem == NULL || *sem == NULL) - { - result = EINVAL; - } - -#ifdef NEED_SEM - - else if (! ptw32_increase_semaphore (sem, 1)) - -#else /* NEED_SEM */ - - else if (! ReleaseSemaphore ((*sem)->sem, 1, 0)) - -#endif /* NEED_SEM */ - - { - result = EINVAL; - } - - if (result != 0) - { - errno = result; - return -1; - } - - return 0; - -} /* sem_post */ - - -int -sem_post_multiple (sem_t * sem, int count ) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function posts multiple wakeups to a semaphore. - * - * PARAMETERS - * sem - * pointer to an instance of sem_t - * - * count - * counter, must be greater than zero. - * - * DESCRIPTION - * This function posts multiple wakeups to a semaphore. If there - * are waiting threads (or processes), n <= count are awakened; - * the semaphore value is incremented by count - n. - * - * RESULTS - * 0 successfully posted semaphore, - * -1 failed, error in errno - * ERRNO - * EINVAL 'sem' is not a valid semaphore - * or count is less than or equal to zero. - * - * ------------------------------------------------------ - */ -{ - int result = 0; - - if (sem == NULL || *sem == NULL || count <= 0) - { - result = EINVAL; - } - -#ifdef NEED_SEM - - else if (! ptw32_increase_semaphore (sem, count)) - -#else /* NEED_SEM */ - - else if (! ReleaseSemaphore ((*sem)->sem, count, 0)) - -#endif /* NEED_SEM */ - - { - result = EINVAL; - } - - if (result != 0) - { - errno = result; - return -1; - } - - return 0; - -} /* sem_post_multiple */ - - -int -sem_open (const char * name, int oflag, mode_t mode, unsigned int value) -{ - errno = ENOSYS; - return -1; -} /* sem_open */ - - -int -sem_close (sem_t * sem) -{ - errno = ENOSYS; - return -1; -} /* sem_close */ - - -int -sem_unlink (const char * name) -{ - errno = ENOSYS; - return -1; -} /* sem_unlink */ - - -int -sem_getvalue (sem_t * sem, int * sval) -{ - errno = ENOSYS; - return -1; -} /* sem_getvalue */ - -- cgit v1.2.3