diff options
Diffstat (limited to 'libs/pthreads/src/pthread_key_delete.c')
| -rw-r--r-- | libs/pthreads/src/pthread_key_delete.c | 168 |
1 files changed, 86 insertions, 82 deletions
diff --git a/libs/pthreads/src/pthread_key_delete.c b/libs/pthreads/src/pthread_key_delete.c index 09d70c63f5..a713c9e725 100644 --- a/libs/pthreads/src/pthread_key_delete.c +++ b/libs/pthreads/src/pthread_key_delete.c @@ -6,65 +6,69 @@ * * -------------------------------------------------------------------------- * - * Pthreads-win32 - POSIX Threads Library for Win32 + * Pthreads4w - 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 - * + * Copyright(C) 1999-2018, Pthreads4w contributors + * + * Homepage: https://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 + * https://sourceforge.net/p/pthreads4w/wiki/Contributors/ + * + * This file is part of Pthreads4w. + * + * Pthreads4w is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Pthreads4w 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Pthreads4w. If not, see <http://www.gnu.org/licenses/>. * */ +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + #include "pthread.h" #include "implement.h" int pthread_key_delete (pthread_key_t key) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function deletes a thread-specific data key. This - * does not change the value of the thread specific data key - * for any thread and does not run the key's destructor - * in any thread so it should be used with caution. - * - * PARAMETERS - * key - * pointer to an instance of pthread_key_t - * - * - * DESCRIPTION - * This function deletes a thread-specific data key. This - * does not change the value of the thread specific data key - * for any thread and does not run the key's destructor - * in any thread so it should be used with caution. - * - * RESULTS - * 0 successfully deleted the key, - * EINVAL key is invalid, - * - * ------------------------------------------------------ - */ +/* + * ------------------------------------------------------ + * DOCPUBLIC + * This function deletes a thread-specific data key. This + * does not change the value of the thread specific data key + * for any thread and does not run the key's destructor + * in any thread so it should be used with caution. + * + * PARAMETERS + * key + * pointer to an instance of pthread_key_t + * + * + * DESCRIPTION + * This function deletes a thread-specific data key. This + * does not change the value of the thread specific data key + * for any thread and does not run the key's destructor + * in any thread so it should be used with caution. + * + * RESULTS + * 0 successfully deleted the key, + * EINVAL key is invalid, + * + * ------------------------------------------------------ + */ { ptw32_mcs_local_node_t keyLock; int result = 0; @@ -72,48 +76,48 @@ pthread_key_delete (pthread_key_t key) if (key != NULL) { if (key->threads != NULL && key->destructor != NULL) - { - ThreadKeyAssoc *assoc; - ptw32_mcs_lock_acquire (&(key->keyLock), &keyLock); - /* - * Run through all Thread<-->Key associations - * for this key. - * - * While we hold at least one of the locks guarding - * the assoc, we know that the assoc pointed to by - * key->threads is valid. - */ - while ((assoc = (ThreadKeyAssoc *) key->threads) != NULL) - { + { + ThreadKeyAssoc *assoc; + ptw32_mcs_lock_acquire (&(key->keyLock), &keyLock); + /* + * Run through all Thread<-->Key associations + * for this key. + * + * While we hold at least one of the locks guarding + * the assoc, we know that the assoc pointed to by + * key->threads is valid. + */ + while ((assoc = (ThreadKeyAssoc *) key->threads) != NULL) + { ptw32_mcs_local_node_t threadLock; - ptw32_thread_t * thread = assoc->thread; + ptw32_thread_t * thread = assoc->thread; - if (assoc == NULL) - { - /* Finished */ - break; - } + if (assoc == NULL) + { + /* Finished */ + break; + } - ptw32_mcs_lock_acquire (&(thread->threadLock), &threadLock); - /* - * Since we are starting at the head of the key's threads - * chain, this will also point key->threads at the next assoc. - * While we hold key->keyLock, no other thread can insert - * a new assoc via pthread_setspecific. - */ - ptw32_tkAssocDestroy (assoc); - ptw32_mcs_lock_release (&threadLock); - ptw32_mcs_lock_release (&keyLock); - } - } + ptw32_mcs_lock_acquire (&(thread->threadLock), &threadLock); + /* + * Since we are starting at the head of the key's threads + * chain, this will also point key->threads at the next assoc. + * While we hold key->keyLock, no other thread can insert + * a new assoc for this key via pthread_setspecific. + */ + ptw32_tkAssocDestroy (assoc); + ptw32_mcs_lock_release (&threadLock); + } + ptw32_mcs_lock_release (&keyLock); + } TlsFree (key->key); if (key->destructor != NULL) - { - /* A thread could be holding the keyLock */ - ptw32_mcs_lock_acquire (&(key->keyLock), &keyLock); - ptw32_mcs_lock_release (&keyLock); - } + { + /* A thread could be holding the keyLock */ + ptw32_mcs_lock_acquire (&(key->keyLock), &keyLock); + ptw32_mcs_lock_release (&keyLock); + } #if defined( _DEBUG ) memset ((char *) key, 0, sizeof (*key)); |