github.com/peggyl/go@v0.0.0-20151008231540-ae315999c2d5/src/runtime/cgo/gcc_libinit.c (about)

     1  // Copyright 2015 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build darwin dragonfly freebsd linux netbsd solaris
     6  // +build !ppc64,!ppc64le
     7  
     8  #include <pthread.h>
     9  #include <stdio.h>
    10  #include <stdlib.h>
    11  #include <string.h> // strerror
    12  
    13  static pthread_cond_t runtime_init_cond = PTHREAD_COND_INITIALIZER;
    14  static pthread_mutex_t runtime_init_mu = PTHREAD_MUTEX_INITIALIZER;
    15  static int runtime_init_done;
    16  
    17  void
    18  x_cgo_sys_thread_create(void* (*func)(void*), void* arg) {
    19  	pthread_t p;
    20  	int err = pthread_create(&p, NULL, func, arg);
    21  	if (err != 0) {
    22  		fprintf(stderr, "pthread_create failed: %s", strerror(err));
    23  		abort();
    24  	}
    25  }
    26  
    27  void
    28  _cgo_wait_runtime_init_done() {
    29  	pthread_mutex_lock(&runtime_init_mu);
    30  	while (runtime_init_done == 0) {
    31  		pthread_cond_wait(&runtime_init_cond, &runtime_init_mu);
    32  	}
    33  	pthread_mutex_unlock(&runtime_init_mu);
    34  }
    35  
    36  void
    37  x_cgo_notify_runtime_init_done(void* dummy) {
    38  	pthread_mutex_lock(&runtime_init_mu);
    39  	runtime_init_done = 1;
    40  	pthread_cond_broadcast(&runtime_init_cond);
    41  	pthread_mutex_unlock(&runtime_init_mu);
    42  }