| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| /* Posix implementation for gpr threads. */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #ifdef GPR_POSIX_SYNC |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/thd.h> |
| #include <grpc/support/useful.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| struct thd_arg { |
| void (*body)(void *arg); /* body of a thread */ |
| void *arg; /* argument to a thread */ |
| }; |
| |
| /* Body of every thread started via gpr_thd_new. */ |
| static void *thread_body(void *v) { |
| struct thd_arg a = *(struct thd_arg *)v; |
| free(v); |
| (*a.body)(a.arg); |
| return NULL; |
| } |
| |
| int gpr_thd_new(gpr_thd_id *t, void (*thd_body)(void *arg), void *arg, |
| const gpr_thd_options *options) { |
| int thread_started; |
| pthread_attr_t attr; |
| pthread_t p; |
| /* don't use gpr_malloc as we may cause an infinite recursion with |
| * the profiling code */ |
| struct thd_arg *a = (struct thd_arg *)malloc(sizeof(*a)); |
| GPR_ASSERT(a != NULL); |
| a->body = thd_body; |
| a->arg = arg; |
| |
| GPR_ASSERT(pthread_attr_init(&attr) == 0); |
| if (gpr_thd_options_is_detached(options)) { |
| GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) == |
| 0); |
| } else { |
| GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE) == |
| 0); |
| } |
| thread_started = (pthread_create(&p, &attr, &thread_body, a) == 0); |
| GPR_ASSERT(pthread_attr_destroy(&attr) == 0); |
| if (!thread_started) { |
| /* don't use gpr_free, as this was allocated using malloc (see above) */ |
| free(a); |
| } |
| *t = (gpr_thd_id)p; |
| return thread_started; |
| } |
| |
| gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)pthread_self(); } |
| |
| void gpr_thd_join(gpr_thd_id t) { pthread_join((pthread_t)t, NULL); } |
| |
| #endif /* GPR_POSIX_SYNC */ |