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/* libs/cutils/threads.c
**
** Copyright (C) 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <cutils/threads.h>
#ifdef HAVE_PTHREADS
void* thread_store_get( thread_store_t* store )
{
const pthread_key_t k = store->tls;
if (!store->has_tls)
return NULL;
return pthread_getspecific( store->tls );
}
extern void thread_store_set( thread_store_t* store,
void* value,
thread_store_destruct_t destroy)
{
pthread_mutex_lock( &store->lock );
if (!store->has_tls) {
if (pthread_key_create( &store->tls, destroy) != 0) {
pthread_mutex_unlock(&store->lock);
return;
}
store->has_tls = 1;
}
pthread_mutex_unlock( &store->lock );
pthread_setspecific( store->tls, value );
}
#endif
#ifdef HAVE_WIN32_THREADS
void* thread_store_get( thread_store_t* store )
{
if (!store->has_tls)
return NULL;
return (void*) TlsGetValue( store->tls );
}
void thread_store_set( thread_store_t* store,
void* value,
thread_store_destruct_t destroy )
{
/* XXX: can't use destructor on thread exit */
if (!store->lock_init) {
store->lock_init = -1;
InitializeCriticalSection( &store->lock );
store->lock_init = -2;
} else while (store->lock_init != -2) {
Sleep(10); /* 10ms */
}
EnterCriticalSection( &store->lock );
if (!store->has_tls) {
store->tls = TlsAlloc();
if (store->tls == TLS_OUT_OF_INDEXES) {
LeaveCriticalSection( &store->lock );
return;
}
store->has_tls = 1;
}
LeaveCriticalSection( &store->lock );
TlsSetValue( store->tls, value );
}
#endif
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