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 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 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
