diff options
Diffstat (limited to 'pthreads/pthread_rwlock_init.c')
| -rw-r--r-- | pthreads/pthread_rwlock_init.c | 223 |
1 files changed, 114 insertions, 109 deletions
diff --git a/pthreads/pthread_rwlock_init.c b/pthreads/pthread_rwlock_init.c index c1d703d4d..90a669469 100644 --- a/pthreads/pthread_rwlock_init.c +++ b/pthreads/pthread_rwlock_init.c @@ -1,109 +1,114 @@ -/*
- * pthread_rwlock_init.c
- *
- * Description:
- * This translation unit implements read/write lock primitives.
- *
- * --------------------------------------------------------------------------
- *
- * Pthreads-win32 - POSIX Threads Library for Win32
- * Copyright(C) 1998 John E. Bossom
- * Copyright(C) 1999,2005 Pthreads-win32 contributors
- *
- * Contact Email: rpj@callisto.canberra.edu.au
- *
- * The current list of contributors is contained
- * in the file CONTRIBUTORS included with the source
- * code distribution. The list can also be seen at the
- * following World Wide Web location:
- * http://sources.redhat.com/pthreads-win32/contributors.html
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library in the file COPYING.LIB;
- * if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-
-#include <limits.h>
-
-#include "pthread.h"
-#include "implement.h"
-
-int
-pthread_rwlock_init (pthread_rwlock_t * rwlock,
- const pthread_rwlockattr_t * attr)
-{
- int result;
- pthread_rwlock_t rwl = 0;
-
- if (rwlock == NULL)
- {
- return EINVAL;
- }
-
- if (attr != NULL && *attr != NULL)
- {
- result = EINVAL; /* Not supported */
- goto DONE;
- }
-
- rwl = (pthread_rwlock_t) calloc (1, sizeof (*rwl));
-
- if (rwl == NULL)
- {
- result = ENOMEM;
- goto DONE;
- }
-
- rwl->nSharedAccessCount = 0;
- rwl->nExclusiveAccessCount = 0;
- rwl->nCompletedSharedAccessCount = 0;
-
- result = pthread_mutex_init (&rwl->mtxExclusiveAccess, NULL);
- if (result != 0)
- {
- goto FAIL0;
- }
-
- result = pthread_mutex_init (&rwl->mtxSharedAccessCompleted, NULL);
- if (result != 0)
- {
- goto FAIL1;
- }
-
- result = pthread_cond_init (&rwl->cndSharedAccessCompleted, NULL);
- if (result != 0)
- {
- goto FAIL2;
- }
-
- rwl->nMagic = PTW32_RWLOCK_MAGIC;
-
- result = 0;
- goto DONE;
-
-FAIL2:
- (void) pthread_mutex_destroy (&(rwl->mtxSharedAccessCompleted));
-
-FAIL1:
- (void) pthread_mutex_destroy (&(rwl->mtxExclusiveAccess));
-
-FAIL0:
- (void) free (rwl);
- rwl = NULL;
-
-DONE:
- *rwlock = rwl;
-
- return result;
-}
+/* + * pthread_rwlock_init.c + * + * Description: + * This translation unit implements read/write lock primitives. + * + * -------------------------------------------------------------------------- + * + * Pthreads-win32 - POSIX Threads Library for Win32 + * Copyright(C) 1998 John E. Bossom + * Copyright(C) 1999,2012 Pthreads-win32 contributors + * + * Homepage1: http://sourceware.org/pthreads-win32/ + * Homepage2: http://sourceforge.net/projects/pthreads4w/ + * + * The current list of contributors is contained + * in the file CONTRIBUTORS included with the source + * code distribution. The list can also be seen at the + * following World Wide Web location: + * http://sources.redhat.com/pthreads-win32/contributors.html + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library in the file COPYING.LIB; + * if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <limits.h> + +#include "pthread.h" +#include "implement.h" + +int +pthread_rwlock_init (pthread_rwlock_t * rwlock, + const pthread_rwlockattr_t * attr) +{ + int result; + pthread_rwlock_t rwl = 0; + + if (rwlock == NULL) + { + return EINVAL; + } + + if (attr != NULL && *attr != NULL) + { + result = EINVAL; /* Not supported */ + goto DONE; + } + + rwl = (pthread_rwlock_t) calloc (1, sizeof (*rwl)); + + if (rwl == NULL) + { + result = ENOMEM; + goto DONE; + } + + rwl->nSharedAccessCount = 0; + rwl->nExclusiveAccessCount = 0; + rwl->nCompletedSharedAccessCount = 0; + + result = pthread_mutex_init (&rwl->mtxExclusiveAccess, NULL); + if (result != 0) + { + goto FAIL0; + } + + result = pthread_mutex_init (&rwl->mtxSharedAccessCompleted, NULL); + if (result != 0) + { + goto FAIL1; + } + + result = pthread_cond_init (&rwl->cndSharedAccessCompleted, NULL); + if (result != 0) + { + goto FAIL2; + } + + rwl->nMagic = PTW32_RWLOCK_MAGIC; + + result = 0; + goto DONE; + +FAIL2: + (void) pthread_mutex_destroy (&(rwl->mtxSharedAccessCompleted)); + +FAIL1: + (void) pthread_mutex_destroy (&(rwl->mtxExclusiveAccess)); + +FAIL0: + (void) free (rwl); + rwl = NULL; + +DONE: + *rwlock = rwl; + + return result; +} |