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/*
*
* 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 */
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