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Diffstat (limited to 'libpthread/linuxthreads.old/specific.c')
| -rw-r--r-- | libpthread/linuxthreads.old/specific.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/libpthread/linuxthreads.old/specific.c b/libpthread/linuxthreads.old/specific.c deleted file mode 100644 index c4bcfbf8c..000000000 --- a/libpthread/linuxthreads.old/specific.c +++ /dev/null @@ -1,198 +0,0 @@ -/* Linuxthreads - a simple clone()-based implementation of Posix */ -/* threads for Linux. */ -/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */ -/* */ -/* This program is free software; you can redistribute it and/or */ -/* modify it under the terms of the GNU Library General Public License */ -/* as published by the Free Software Foundation; either version 2 */ -/* of the License, or (at your option) any later version. */ -/* */ -/* This program 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 Library General Public License for more details. */ - -/* Thread-specific data */ - -#include <features.h> -#include <errno.h> -#include <stddef.h> -#include <stdlib.h> -#include "pthread.h" -#include "internals.h" -#include "spinlock.h" -#include "restart.h" - -/* Table of keys. */ - -static struct pthread_key_struct pthread_keys[PTHREAD_KEYS_MAX] = - { { 0, NULL } }; - -/* For debugging purposes put the maximum number of keys in a variable. */ -const int __linuxthreads_pthread_keys_max = PTHREAD_KEYS_MAX; -const int __linuxthreads_pthread_key_2ndlevel_size = PTHREAD_KEY_2NDLEVEL_SIZE; - -/* Mutex to protect access to pthread_keys */ - -static pthread_mutex_t pthread_keys_mutex = PTHREAD_MUTEX_INITIALIZER; - -/* Create a new key */ - -int pthread_key_create(pthread_key_t * key, destr_function destr) -{ - int i; - - __pthread_mutex_lock(&pthread_keys_mutex); - for (i = 0; i < PTHREAD_KEYS_MAX; i++) { - if (! pthread_keys[i].in_use) { - /* Mark key in use */ - pthread_keys[i].in_use = 1; - pthread_keys[i].destr = destr; - __pthread_mutex_unlock(&pthread_keys_mutex); - *key = i; - return 0; - } - } - __pthread_mutex_unlock(&pthread_keys_mutex); - return EAGAIN; -} - -/* Delete a key */ -int pthread_key_delete(pthread_key_t key) -{ - pthread_descr self = thread_self(); - - __pthread_mutex_lock(&pthread_keys_mutex); - if (key >= PTHREAD_KEYS_MAX || !pthread_keys[key].in_use) { - __pthread_mutex_unlock(&pthread_keys_mutex); - return EINVAL; - } - pthread_keys[key].in_use = 0; - pthread_keys[key].destr = NULL; - - /* Set the value of the key to NULL in all running threads, so - that if the key is reallocated later by pthread_key_create, its - associated values will be NULL in all threads. - Do nothing if no threads have been created yet. */ - if (__pthread_manager_request != -1) - { - pthread_descr th; - unsigned int idx1st, idx2nd; - - idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE; - idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE; - th = self; - do { - /* If the thread already is terminated don't modify the memory. */ - if (!th->p_terminated && th->p_specific[idx1st] != NULL) - th->p_specific[idx1st][idx2nd] = NULL; - th = th->p_nextlive; - } while (th != self); - } - - __pthread_mutex_unlock(&pthread_keys_mutex); - return 0; -} - -/* Set the value of a key */ - -int pthread_setspecific(pthread_key_t key, const void * pointer) -{ - pthread_descr self = thread_self(); - unsigned int idx1st, idx2nd; - - if (key >= PTHREAD_KEYS_MAX || !pthread_keys[key].in_use) - return EINVAL; - idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE; - idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE; - if (THREAD_GETMEM_NC(self, p_specific[idx1st]) == NULL) { - void *newp = calloc(PTHREAD_KEY_2NDLEVEL_SIZE, sizeof (void *)); - if (newp == NULL) - return ENOMEM; - THREAD_SETMEM_NC(self, p_specific[idx1st], newp); - } - THREAD_GETMEM_NC(self, p_specific[idx1st])[idx2nd] = (void *) pointer; - return 0; -} - -/* Get the value of a key */ - -void * pthread_getspecific(pthread_key_t key) -{ - pthread_descr self = thread_self(); - unsigned int idx1st, idx2nd; - - if (key >= PTHREAD_KEYS_MAX) - return NULL; - idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE; - idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE; - if (THREAD_GETMEM_NC(self, p_specific[idx1st]) == NULL - || !pthread_keys[key].in_use) - return NULL; - return THREAD_GETMEM_NC(self, p_specific[idx1st])[idx2nd]; -} - -/* Call the destruction routines on all keys */ - -void __pthread_destroy_specifics(void) -{ - pthread_descr self = thread_self(); - int i, j, round, found_nonzero; - destr_function destr; - void * data; - - for (round = 0, found_nonzero = 1; - found_nonzero && round < PTHREAD_DESTRUCTOR_ITERATIONS; - round++) { - found_nonzero = 0; - for (i = 0; i < PTHREAD_KEY_1STLEVEL_SIZE; i++) - if (THREAD_GETMEM_NC(self, p_specific[i]) != NULL) - for (j = 0; j < PTHREAD_KEY_2NDLEVEL_SIZE; j++) { - destr = pthread_keys[i * PTHREAD_KEY_2NDLEVEL_SIZE + j].destr; - data = THREAD_GETMEM_NC(self, p_specific[i])[j]; - if (destr != NULL && data != NULL) { - THREAD_GETMEM_NC(self, p_specific[i])[j] = NULL; - destr(data); - found_nonzero = 1; - } - } - } - __pthread_lock(THREAD_GETMEM(self, p_lock), self); - for (i = 0; i < PTHREAD_KEY_1STLEVEL_SIZE; i++) { - if (THREAD_GETMEM_NC(self, p_specific[i]) != NULL) { - free(THREAD_GETMEM_NC(self, p_specific[i])); - THREAD_SETMEM_NC(self, p_specific[i], NULL); - } - } - __pthread_unlock(THREAD_GETMEM(self, p_lock)); -} - -#if !defined __UCLIBC_HAS_TLS__ && defined __UCLIBC_HAS_RPC__ - -/* Thread-specific data for libc. */ - -int -__pthread_internal_tsd_set (int key, const void * pointer) -{ - pthread_descr self = thread_self(); - - THREAD_SETMEM_NC(self, p_libc_specific[key], (void *) pointer); - return 0; -} - -void * -__pthread_internal_tsd_get (int key) -{ - pthread_descr self = thread_self(); - - return THREAD_GETMEM_NC(self, p_libc_specific[key]); -} - -void ** __attribute__ ((__const__)) -__pthread_internal_tsd_address (int key) -{ - pthread_descr self = thread_self(); - return &self->p_libc_specific[key]; -} - -#endif |