1 /*
2  *
3  * Copyright 2020 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_STDCPP_H
20 #define GRPC_CORE_LIB_GPR_TLS_STDCPP_H
21 
22 #include <grpc/support/port_platform.h>
23 
24 /** Thread local storage based on C++ thread_local.
25    #include tls.h to use this - and see that file for documentation */
26 
27 /** Use GPR_TLS_DECL to declare tls static variables outside a class */
28 #define GPR_TLS_DECL(name) thread_local static intptr_t name = 0
29 
30 /** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class.
31  *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
32 #define GPR_TLS_CLASS_DECL(name) thread_local static intptr_t name
33 
34 #define GPR_TLS_CLASS_DEF(name) thread_local intptr_t name = 0
35 
36 #define gpr_tls_init(tls) \
37   do {                    \
38   } while (0)
39 
40 #define gpr_tls_destroy(tls) \
41   do {                       \
42   } while (0)
43 
44 #define gpr_tls_set(tls, new_value) (*(tls) = (new_value))
45 
46 #define gpr_tls_get(tls) (*(tls))
47 
48 #endif /* GRPC_CORE_LIB_GPR_TLS_STDCPP_H */
49