+/*
+ * Copyright (c) 2000-2003, 2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
/*
* Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
* All Rights Reserved
/*
* POSIX Pthread Library
* Thread Specific Data support
+ * NB: pthread_getspecific() is in a separate assembly file
*/
#include "pthread_internals.h"
{
int created; /* Set TRUE if 'create_key' used this slot */
void (*destructor)(void *);
-} _pthread_keys[_POSIX_THREAD_KEYS_MAX];
+} _pthread_keys[_INTERNAL_POSIX_THREAD_KEYS_END];
static pthread_lock_t tds_lock = LOCK_INITIALIZER;
+/*
+ * Partition _pthread_keys in a lower part that dyld can use, and an upper
+ * part for libSystem. The libSystem part starts at __pthread_tsd_first = 4.
+ * dyld will set this value to 1.
+ * LEFT OVER TILL DYLD changes to using static (1-3) numbers
+ */
+
+#ifdef DYLD_STATIC_LIBC_BUILD
+__private_extern__ int __pthread_tsd_first = 1;
+__private_extern__ int __pthread_tsd_start = 5;
+__private_extern__ int __pthread_tsd_end = 10;
+__private_extern__ int __pthread_tsd_max = 10;
+#else
+__private_extern__ int __pthread_tsd_first = 10;
+__private_extern__ int __pthread_tsd_start = _INTERNAL_POSIX_THREAD_KEYS_MAX;
+__private_extern__ int __pthread_tsd_end = _INTERNAL_POSIX_THREAD_KEYS_END;
+__private_extern__ int __pthread_tsd_max = 10;
+#endif
/*
* Create a new key for thread specific data
*/
{
int res, i;
LOCK(tds_lock);
- res = ENOMEM; /* No 'free' keys */
- for (i = 0; i < _POSIX_THREAD_KEYS_MAX; i++)
+ res = EAGAIN; /* No 'free' keys, return EAGAIN (as per standard) */
+ /* The first slot is reserved for pthread_self() */
+ for (i = __pthread_tsd_start; i < __pthread_tsd_end; i++)
{
if (_pthread_keys[i].created == FALSE)
{
_pthread_keys[i].created = TRUE;
_pthread_keys[i].destructor = destructor;
- *key = i+1;
- res = ESUCCESS;
+ *key = i;
+ res = 0;
break;
}
}
{
int res;
LOCK(tds_lock);
- if ((key >= 1) && (key <= _POSIX_THREAD_KEYS_MAX))
+ /* The first slot is reserved for pthread_self() */
+ if ((key >= __pthread_tsd_start) && (key < __pthread_tsd_end))
{
- if (_pthread_keys[key-1].created)
+ if (_pthread_keys[key].created)
{
- _pthread_keys[key-1].created = FALSE;
- res = ESUCCESS;
+ struct _pthread * p;
+
+ _pthread_keys[key].created = FALSE;
+ LOCK(_pthread_list_lock);
+ TAILQ_FOREACH(p, &__pthread_head, plist) {
+ /* It is an 32bit value no lock needed */
+ p->tsd[key] = 0;
+ }
+ UNLOCK(_pthread_list_lock);
+ res = 0;
} else
{
res = EINVAL;
{
int res;
pthread_t self;
- if ((key >= 1) && (key <= _POSIX_THREAD_KEYS_MAX))
+ /* The first slot is reserved for pthread_self() */
+ if ((key >= __pthread_tsd_first) && (key < __pthread_tsd_end))
{
- if (_pthread_keys[key-1].created)
+ if ((key < __pthread_tsd_start) || _pthread_keys[key].created)
{
self = pthread_self();
- self->tsd[key-1] = (void *) value;
- res = ESUCCESS;
+ self->tsd[key] = (void *) value;
+ res = 0;
+ if ((key < __pthread_tsd_start) && (_pthread_keys[key].created == FALSE))
+ _pthread_keys[key].created = TRUE;
+
+ if (key > self->max_tsd_key)
+ self->max_tsd_key = key;
} else
{
res = EINVAL;
return (res);
}
-/*
- * Fetch the thread private value for a given key.
- * This is potentially a very heavily-used operation so we do only
- * a minimum of checks.
- */
-void *
-pthread_getspecific(pthread_key_t key)
-{
- pthread_t self;
- void *res;
- if ((key >= 1) && (key <= _POSIX_THREAD_KEYS_MAX))
- {
- self = pthread_self();
- res = self->tsd[key-1];
- } else
- { /* Invalid key - no error, just NULL */
- res = (void *)NULL;
- }
- return (res);
-}
-
/*
* Clean up thread specific data as thread 'dies'
*/
{
int i, j;
void *param;
+
+ /* destroy dynamic keys first */
for (j = 0; j < PTHREAD_DESTRUCTOR_ITERATIONS; j++)
{
- for (i = 0; i < _POSIX_THREAD_KEYS_MAX; i++)
+ for (i = __pthread_tsd_start; i <= self->max_tsd_key; i++)
+ {
+ if (_pthread_keys[i].created && (param = self->tsd[i]))
+ {
+ self->tsd[i] = (void *)NULL;
+ if (_pthread_keys[i].destructor)
+ {
+ (_pthread_keys[i].destructor)(param);
+ }
+ }
+ }
+ }
+
+ self->max_tsd_key = 0;
+
+ /*
+ * The first slot is reserved for pthread_self() and there is no cleanup on it.
+ * Destroy rest of the static keys next only if any destructors registered.
+ */
+ for (j = 0; j < PTHREAD_DESTRUCTOR_ITERATIONS; j++) {
+ for (i = __pthread_tsd_first; i <= __pthread_tsd_max; i++)
{
if (_pthread_keys[i].created && (param = self->tsd[i]))
{
}
}
}
+
+int
+pthread_key_init_np(int key, void (*destructor)(void *))
+{
+ if ((key >= __pthread_tsd_first) && (key < __pthread_tsd_start)) {
+ LOCK(tds_lock);
+ _pthread_keys[key].created = TRUE;
+ _pthread_keys[key].destructor = destructor;
+
+ if (key > __pthread_tsd_max)
+ __pthread_tsd_max = key;
+ UNLOCK(tds_lock);
+ return (0);
+ } else
+ return(EINVAL);
+}
+
+/* we need this till the switchover happens for the dyld. It get 1- 10 slot */
+void
+_pthread_keys_init()
+{
+ if (__pthread_tsd_first == 1) {
+ __pthread_tsd_start = 5;
+ __pthread_tsd_end = 10;
+ __pthread_tsd_max = 10;
+ }
+
+}
+
projects / apple / libc.git / blobdiff