diff options
Diffstat (limited to 'pthreads/pthread_key_create.c')
-rw-r--r-- | pthreads/pthread_key_create.c | 216 |
1 files changed, 108 insertions, 108 deletions
diff --git a/pthreads/pthread_key_create.c b/pthreads/pthread_key_create.c index 9ffa03010..bdeee09b3 100644 --- a/pthreads/pthread_key_create.c +++ b/pthreads/pthread_key_create.c @@ -1,108 +1,108 @@ -/*
- * pthread_key_create.c
- *
- * Description:
- * POSIX thread functions which implement thread-specific data (TSD).
- *
- * --------------------------------------------------------------------------
- *
- * 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 "pthread.h"
-#include "implement.h"
-
-
-/* TLS_OUT_OF_INDEXES not defined on WinCE */
-#ifndef TLS_OUT_OF_INDEXES
-#define TLS_OUT_OF_INDEXES 0xffffffff
-#endif
-
-int
-pthread_key_create (pthread_key_t * key, void (*destructor) (void *))
- /*
- * ------------------------------------------------------
- * DOCPUBLIC
- * This function creates a thread-specific data key visible
- * to all threads. All existing and new threads have a value
- * NULL for key until set using pthread_setspecific. When any
- * thread with a non-NULL value for key terminates, 'destructor'
- * is called with key's current value for that thread.
- *
- * PARAMETERS
- * key
- * pointer to an instance of pthread_key_t
- *
- *
- * DESCRIPTION
- * This function creates a thread-specific data key visible
- * to all threads. All existing and new threads have a value
- * NULL for key until set using pthread_setspecific. When any
- * thread with a non-NULL value for key terminates, 'destructor'
- * is called with key's current value for that thread.
- *
- * RESULTS
- * 0 successfully created semaphore,
- * EAGAIN insufficient resources or PTHREAD_KEYS_MAX
- * exceeded,
- * ENOMEM insufficient memory to create the key,
- *
- * ------------------------------------------------------
- */
-{
- int result = 0;
- pthread_key_t newkey;
-
- if ((newkey = (pthread_key_t) calloc (1, sizeof (*newkey))) == NULL)
- {
- result = ENOMEM;
- }
- else if ((newkey->key = TlsAlloc ()) == TLS_OUT_OF_INDEXES)
- {
- result = EAGAIN;
-
- free (newkey);
- newkey = NULL;
- }
- else if (destructor != NULL)
- {
- /*
- * Have to manage associations between thread and key;
- * Therefore, need a lock that allows competing threads
- * to gain exclusive access to the key->threads list.
- *
- * The mutex will only be created when it is first locked.
- */
- newkey->keyLock = PTHREAD_MUTEX_INITIALIZER;
- newkey->destructor = destructor;
- }
-
- *key = newkey;
-
- return (result);
-}
+/* + * pthread_key_create.c + * + * Description: + * POSIX thread functions which implement thread-specific data (TSD). + * + * -------------------------------------------------------------------------- + * + * 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 "pthread.h" +#include "implement.h" + + +/* TLS_OUT_OF_INDEXES not defined on WinCE */ +#if !defined(TLS_OUT_OF_INDEXES) +#define TLS_OUT_OF_INDEXES 0xffffffff +#endif + +int +pthread_key_create (pthread_key_t * key, void (*destructor) (void *)) + /* + * ------------------------------------------------------ + * DOCPUBLIC + * This function creates a thread-specific data key visible + * to all threads. All existing and new threads have a value + * NULL for key until set using pthread_setspecific. When any + * thread with a non-NULL value for key terminates, 'destructor' + * is called with key's current value for that thread. + * + * PARAMETERS + * key + * pointer to an instance of pthread_key_t + * + * + * DESCRIPTION + * This function creates a thread-specific data key visible + * to all threads. All existing and new threads have a value + * NULL for key until set using pthread_setspecific. When any + * thread with a non-NULL value for key terminates, 'destructor' + * is called with key's current value for that thread. + * + * RESULTS + * 0 successfully created semaphore, + * EAGAIN insufficient resources or PTHREAD_KEYS_MAX + * exceeded, + * ENOMEM insufficient memory to create the key, + * + * ------------------------------------------------------ + */ +{ + int result = 0; + pthread_key_t newkey; + + if ((newkey = (pthread_key_t) calloc (1, sizeof (*newkey))) == NULL) + { + result = ENOMEM; + } + else if ((newkey->key = TlsAlloc ()) == TLS_OUT_OF_INDEXES) + { + result = EAGAIN; + + free (newkey); + newkey = NULL; + } + else if (destructor != NULL) + { + /* + * Have to manage associations between thread and key; + * Therefore, need a lock that allows competing threads + * to gain exclusive access to the key->threads list. + * + * The mutex will only be created when it is first locked. + */ + newkey->keyLock = 0; + newkey->destructor = destructor; + } + + *key = newkey; + + return (result); +} |