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author | obrien <obrien@FreeBSD.org> | 2007-10-09 14:16:39 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 2007-10-09 14:16:39 +0000 |
commit | 9724a293f7f7df7e791661a0a5159fe124c80f7d (patch) | |
tree | d0edefa18994441e9444e6531011f2a5d5cf29b6 /lib/libpthread/thread/thr_spec.c | |
parent | eb3f6a9e7473ee9d6e8016ce8d9cc1e8286bdd98 (diff) | |
download | FreeBSD-src-9724a293f7f7df7e791661a0a5159fe124c80f7d.zip FreeBSD-src-9724a293f7f7df7e791661a0a5159fe124c80f7d.tar.gz |
Repo copy libpthreads to libkse.
This introduces the WITHOUT_LIBKSE nob,
and changes WITHOUT_LIBPTHREADS to mean with neither threading libs.
Approved by: re(kensmith)
Diffstat (limited to 'lib/libpthread/thread/thr_spec.c')
-rw-r--r-- | lib/libpthread/thread/thr_spec.c | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/lib/libpthread/thread/thr_spec.c b/lib/libpthread/thread/thr_spec.c deleted file mode 100644 index 6059375..0000000 --- a/lib/libpthread/thread/thr_spec.c +++ /dev/null @@ -1,240 +0,0 @@ -/* - * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. - * 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. 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 AUTHOR 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. - * - * $FreeBSD$ - */ -#include <signal.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <pthread.h> - -#include "thr_private.h" - - -struct pthread_key _thread_keytable[PTHREAD_KEYS_MAX]; - -/* - * XXX - This breaks the linker if LT10_COMPAT_DEFAULT doesn't - * also include a weak reference to the default symbol. - */ -LT10_COMPAT_PRIVATE(_thread_keytable); - -LT10_COMPAT_PRIVATE(_pthread_key_create); -LT10_COMPAT_DEFAULT(pthread_key_create); -LT10_COMPAT_PRIVATE(_pthread_key_delete); -LT10_COMPAT_DEFAULT(pthread_key_delete); -LT10_COMPAT_PRIVATE(_pthread_getspecific); -LT10_COMPAT_DEFAULT(pthread_getspecific); -LT10_COMPAT_PRIVATE(_pthread_setspecific); -LT10_COMPAT_DEFAULT(pthread_setspecific); - -__weak_reference(_pthread_key_create, pthread_key_create); -__weak_reference(_pthread_key_delete, pthread_key_delete); -__weak_reference(_pthread_getspecific, pthread_getspecific); -__weak_reference(_pthread_setspecific, pthread_setspecific); - - -int -_pthread_key_create(pthread_key_t *key, void (*destructor) (void *)) -{ - struct pthread *curthread = _get_curthread(); - int i; - - /* Lock the key table: */ - THR_LOCK_ACQUIRE(curthread, &_keytable_lock); - for (i = 0; i < PTHREAD_KEYS_MAX; i++) { - - if (_thread_keytable[i].allocated == 0) { - _thread_keytable[i].allocated = 1; - _thread_keytable[i].destructor = destructor; - _thread_keytable[i].seqno++; - - /* Unlock the key table: */ - THR_LOCK_RELEASE(curthread, &_keytable_lock); - *key = i; - return (0); - } - - } - /* Unlock the key table: */ - THR_LOCK_RELEASE(curthread, &_keytable_lock); - return (EAGAIN); -} - -int -_pthread_key_delete(pthread_key_t key) -{ - struct pthread *curthread = _get_curthread(); - int ret = 0; - - if ((unsigned int)key < PTHREAD_KEYS_MAX) { - /* Lock the key table: */ - THR_LOCK_ACQUIRE(curthread, &_keytable_lock); - - if (_thread_keytable[key].allocated) - _thread_keytable[key].allocated = 0; - else - ret = EINVAL; - - /* Unlock the key table: */ - THR_LOCK_RELEASE(curthread, &_keytable_lock); - } else - ret = EINVAL; - return (ret); -} - -void -_thread_cleanupspecific(void) -{ - struct pthread *curthread = _get_curthread(); - void (*destructor)( void *); - void *data = NULL; - int key; - int i; - - if (curthread->specific == NULL) - return; - - /* Lock the key table: */ - THR_LOCK_ACQUIRE(curthread, &_keytable_lock); - for (i = 0; (i < PTHREAD_DESTRUCTOR_ITERATIONS) && - (curthread->specific_data_count > 0); i++) { - for (key = 0; (key < PTHREAD_KEYS_MAX) && - (curthread->specific_data_count > 0); key++) { - destructor = NULL; - - if (_thread_keytable[key].allocated && - (curthread->specific[key].data != NULL)) { - if (curthread->specific[key].seqno == - _thread_keytable[key].seqno) { - data = (void *) - curthread->specific[key].data; - destructor = _thread_keytable[key].destructor; - } - curthread->specific[key].data = NULL; - curthread->specific_data_count--; - } - - /* - * If there is a destructore, call it - * with the key table entry unlocked: - */ - if (destructor != NULL) { - /* - * Don't hold the lock while calling the - * destructor: - */ - THR_LOCK_RELEASE(curthread, &_keytable_lock); - destructor(data); - THR_LOCK_ACQUIRE(curthread, &_keytable_lock); - } - } - } - THR_LOCK_RELEASE(curthread, &_keytable_lock); - free(curthread->specific); - curthread->specific = NULL; - if (curthread->specific_data_count > 0) - stderr_debug("Thread %p has exited with leftover " - "thread-specific data after %d destructor iterations\n", - curthread, PTHREAD_DESTRUCTOR_ITERATIONS); -} - -static inline struct pthread_specific_elem * -pthread_key_allocate_data(void) -{ - struct pthread_specific_elem *new_data; - - new_data = (struct pthread_specific_elem *) - malloc(sizeof(struct pthread_specific_elem) * PTHREAD_KEYS_MAX); - if (new_data != NULL) { - memset((void *) new_data, 0, - sizeof(struct pthread_specific_elem) * PTHREAD_KEYS_MAX); - } - return (new_data); -} - -int -_pthread_setspecific(pthread_key_t key, const void *value) -{ - struct pthread *pthread; - int ret = 0; - - /* Point to the running thread: */ - pthread = _get_curthread(); - - if ((pthread->specific) || - (pthread->specific = pthread_key_allocate_data())) { - if ((unsigned int)key < PTHREAD_KEYS_MAX) { - if (_thread_keytable[key].allocated) { - if (pthread->specific[key].data == NULL) { - if (value != NULL) - pthread->specific_data_count++; - } else if (value == NULL) - pthread->specific_data_count--; - pthread->specific[key].data = value; - pthread->specific[key].seqno = - _thread_keytable[key].seqno; - ret = 0; - } else - ret = EINVAL; - } else - ret = EINVAL; - } else - ret = ENOMEM; - return (ret); -} - -void * -_pthread_getspecific(pthread_key_t key) -{ - struct pthread *pthread; - void *data; - - /* Point to the running thread: */ - pthread = _get_curthread(); - - /* Check if there is specific data: */ - if (pthread->specific != NULL && (unsigned int)key < PTHREAD_KEYS_MAX) { - /* Check if this key has been used before: */ - if (_thread_keytable[key].allocated && - (pthread->specific[key].seqno == _thread_keytable[key].seqno)) { - /* Return the value: */ - data = (void *) pthread->specific[key].data; - } 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; - return (data); -} |