1 /* 2 ** Copyright (C) 2007, The Android Open Source Project 3 ** 4 ** Licensed under the Apache License, Version 2.0 (the "License"); 5 ** you may not use this file except in compliance with the License. 6 ** You may obtain a copy of the License at 7 ** 8 ** http://www.apache.org/licenses/LICENSE-2.0 9 ** 10 ** Unless required by applicable law or agreed to in writing, software 11 ** distributed under the License is distributed on an "AS IS" BASIS, 12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 ** See the License for the specific language governing permissions and 14 ** limitations under the License. 15 */ 16 17 #include <cutils/threads.h> 18 19 #ifdef HAVE_PTHREADS 20 void* thread_store_get( thread_store_t* store ) 21 { 22 if (!store->has_tls) 23 return NULL; 24 25 return pthread_getspecific( store->tls ); 26 } 27 28 extern void thread_store_set( thread_store_t* store, 29 void* value, 30 thread_store_destruct_t destroy) 31 { 32 pthread_mutex_lock( &store->lock ); 33 if (!store->has_tls) { 34 if (pthread_key_create( &store->tls, destroy) != 0) { 35 pthread_mutex_unlock(&store->lock); 36 return; 37 } 38 store->has_tls = 1; 39 } 40 pthread_mutex_unlock( &store->lock ); 41 42 pthread_setspecific( store->tls, value ); 43 } 44 45 #endif 46 47 #ifdef HAVE_WIN32_THREADS 48 void* thread_store_get( thread_store_t* store ) 49 { 50 if (!store->has_tls) 51 return NULL; 52 53 return (void*) TlsGetValue( store->tls ); 54 } 55 56 void thread_store_set( thread_store_t* store, 57 void* value, 58 thread_store_destruct_t destroy ) 59 { 60 /* XXX: can't use destructor on thread exit */ 61 if (!store->lock_init) { 62 store->lock_init = -1; 63 InitializeCriticalSection( &store->lock ); 64 store->lock_init = -2; 65 } else while (store->lock_init != -2) { 66 Sleep(10); /* 10ms */ 67 } 68 69 EnterCriticalSection( &store->lock ); 70 if (!store->has_tls) { 71 store->tls = TlsAlloc(); 72 if (store->tls == TLS_OUT_OF_INDEXES) { 73 LeaveCriticalSection( &store->lock ); 74 return; 75 } 76 store->has_tls = 1; 77 } 78 LeaveCriticalSection( &store->lock ); 79 80 TlsSetValue( store->tls, value ); 81 } 82 #endif 83