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 /* Test of gpr thread local storage support. */
20
21 #include "src/core/lib/gpr/tls.h"
22
23 #include <stdio.h>
24 #include <stdlib.h>
25
26 #include <grpc/support/log.h>
27 #include <grpc/support/sync.h>
28
29 #include "src/core/lib/gprpp/thd.h"
30 #include "test/core/util/test_config.h"
31
32 #define NUM_THREADS 100
33
34 GPR_TLS_DECL(test_var);
35
thd_body(void * arg)36 static void thd_body(void* arg) {
37 intptr_t i;
38
39 GPR_ASSERT(gpr_tls_get(&test_var) == 0);
40
41 for (i = 0; i < 100000; i++) {
42 gpr_tls_set(&test_var, i);
43 GPR_ASSERT(gpr_tls_get(&test_var) == i);
44 }
45 gpr_tls_set(&test_var, 0);
46 }
47
48 /* ------------------------------------------------- */
49
main(int argc,char * argv[])50 int main(int argc, char* argv[]) {
51 grpc_core::Thread threads[NUM_THREADS];
52
53 grpc_test_init(argc, argv);
54
55 gpr_tls_init(&test_var);
56
57 for (auto& th : threads) {
58 th = grpc_core::Thread("grpc_tls_test", thd_body, nullptr);
59 th.Start();
60 }
61 for (auto& th : threads) {
62 th.Join();
63 }
64
65 gpr_tls_destroy(&test_var);
66
67 return 0;
68 }
69