1 /* 2 * 3 * Copyright 2015 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #ifndef GRPC_CORE_LIB_GPR_TLS_PTHREAD_H 20 #define GRPC_CORE_LIB_GPR_TLS_PTHREAD_H 21 22 #include <grpc/support/port_platform.h> 23 24 #include <grpc/support/log.h> /* for GPR_ASSERT */ 25 #include <pthread.h> 26 27 /** Thread local storage based on pthread library calls. 28 #include tls.h to use this - and see that file for documentation */ 29 30 struct gpr_pthread_thread_local { 31 pthread_key_t key; 32 }; 33 34 /** Use GPR_TLS_DECL to declare tls static variables outside a class */ 35 #define GPR_TLS_DECL(name) static struct gpr_pthread_thread_local name = {0} 36 37 /** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class. 38 * GPR_TLS_CLASS_DEF needs to be called to define this member. */ 39 #define GPR_TLS_CLASS_DECL(name) static struct gpr_pthread_thread_local name 40 41 /** Use GPR_TLS_CLASS_DEF to declare tls static variable members of a class. 42 * GPR_TLS_CLASS_DEF needs to be called to define this member. */ 43 #define GPR_TLS_CLASS_DEF(name) struct gpr_pthread_thread_local name = {0} 44 45 #define gpr_tls_init(tls) GPR_ASSERT(0 == pthread_key_create(&(tls)->key, NULL)) 46 #define gpr_tls_destroy(tls) pthread_key_delete((tls)->key) 47 #define gpr_tls_get(tls) ((intptr_t)pthread_getspecific((tls)->key)) 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 intptr_t gpr_tls_set(struct gpr_pthread_thread_local* tls, intptr_t value); 52 #ifdef __cplusplus 53 } 54 #endif 55 56 #endif /* GRPC_CORE_LIB_GPR_TLS_PTHREAD_H */ 57