From 7c6e96080c4fb49bf912942804477d202a53396c Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Sat, 10 Jan 1998 23:00:07 +0000 Subject: This commit was manufactured by cvs2svn to create branch 'JB'. --- lib/libpthread/thread/thr_spec.c | 236 --------------------------------------- 1 file changed, 236 deletions(-) delete mode 100644 lib/libpthread/thread/thr_spec.c (limited to 'lib/libpthread/thread/thr_spec.c') diff --git a/lib/libpthread/thread/thr_spec.c b/lib/libpthread/thread/thr_spec.c deleted file mode 100644 index 7ff9054..0000000 --- a/lib/libpthread/thread/thr_spec.c +++ /dev/null @@ -1,236 +0,0 @@ -/* - * Copyright (c) 1995 John Birrell . - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by John Birrell. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ -#include -#include -#include -#include -#ifdef _THREAD_SAFE -#include -#include "pthread_private.h" - -/* Static variables: */ -static struct pthread_key key_table[PTHREAD_KEYS_MAX]; - -int -pthread_key_create(pthread_key_t * key, void (*destructor) (void *)) -{ - for ((*key) = 0; (*key) < PTHREAD_KEYS_MAX; (*key)++) { - if (key_table[(*key)].count == 0) { - key_table[(*key)].count++; - key_table[(*key)].destructor = destructor; - return (0); - } - } - return (EAGAIN); -} - -int -pthread_key_delete(pthread_key_t key) -{ - int ret; - int status; - - /* Block signals: */ - _thread_kern_sig_block(&status); - - if (key < PTHREAD_KEYS_MAX) { - switch (key_table[key].count) { - case 1: - key_table[key].destructor = NULL; - key_table[key].count = 0; - case 0: - ret = 0; - break; - default: - ret = EBUSY; - } - } else { - ret = EINVAL; - } - - /* Unblock signals: */ - _thread_kern_sig_unblock(status); - return (ret); -} - -void -_thread_cleanupspecific(void) -{ - void *data; - int key; - int itr; - int status; - - /* Block signals: */ - _thread_kern_sig_block(&status); - - for (itr = 0; itr < PTHREAD_DESTRUCTOR_ITERATIONS; itr++) { - for (key = 0; key < PTHREAD_KEYS_MAX; key++) { - if (_thread_run->specific_data_count) { - if (_thread_run->specific_data[key]) { - data = (void *) _thread_run->specific_data[key]; - _thread_run->specific_data[key] = NULL; - _thread_run->specific_data_count--; - if (key_table[key].destructor) { - key_table[key].destructor(data); - } - key_table[key].count--; - } - } else { - free(_thread_run->specific_data); - - /* Unblock signals: */ - _thread_kern_sig_unblock(status); - return; - } - } - } - free(_thread_run->specific_data); - - /* Unblock signals: */ - _thread_kern_sig_unblock(status); -} - -static inline const void ** -pthread_key_allocate_data(void) -{ - const void **new_data; - if ((new_data = (const void **) malloc(sizeof(void *) * PTHREAD_KEYS_MAX)) != NULL) { - memset((void *) new_data, 0, sizeof(void *) * PTHREAD_KEYS_MAX); - } - return (new_data); -} - -int -pthread_setspecific(pthread_key_t key, const void *value) -{ - pthread_t pthread; - int ret = 0; - int status; - - /* Block signals: */ - _thread_kern_sig_block(&status); - - /* Point to the running thread: */ - pthread = _thread_run; - - /* - * Enter a loop for signal handler threads to find the parent thread - * which has the specific data associated with it: - */ - while (pthread->parent_thread != NULL) { - /* Point to the parent thread: */ - pthread = pthread->parent_thread; - } - - if ((pthread->specific_data) || (pthread->specific_data = pthread_key_allocate_data())) { - if ((key < PTHREAD_KEYS_MAX) && (key_table)) { - if (key_table[key].count) { - if (pthread->specific_data[key] == NULL) { - if (value != NULL) { - pthread->specific_data_count++; - key_table[key].count++; - } - } else { - if (value == NULL) { - pthread->specific_data_count--; - key_table[key].count--; - } - } - pthread->specific_data[key] = value; - ret = 0; - } else { - ret = EINVAL; - } - } else { - ret = EINVAL; - } - } else { - ret = ENOMEM; - } - - /* Unblock signals: */ - _thread_kern_sig_unblock(status); - return (ret); -} - -void * -pthread_getspecific(pthread_key_t key) -{ - pthread_t pthread; - int status; - void *data; - - /* Block signals: */ - _thread_kern_sig_block(&status); - - /* Point to the running thread: */ - pthread = _thread_run; - - /* - * Enter a loop for signal handler threads to find the parent thread - * which has the specific data associated with it: - */ - while (pthread->parent_thread != NULL) { - /* Point to the parent thread: */ - pthread = pthread->parent_thread; - } - - /* Check for errors: */ - if (pthread == NULL) { - /* Return an invalid argument error: */ - data = NULL; - } - /* Check if there is specific data: */ - else if (pthread->specific_data != NULL && (key < PTHREAD_KEYS_MAX) && (key_table)) { - /* Check if this key has been used before: */ - if (key_table[key].count) { - /* Return the value: */ - data = (void *) pthread->specific_data[key]; - } else { - /* - * This key has not been used before, so return NULL - * instead: - */ - data = NULL; - } - } else { - /* No specific data has been created, so just return NULL: */ - data = NULL; - } - - /* Unblock signals: */ - _thread_kern_sig_unblock(status); - return (data); -} -#endif -- cgit v1.1