github.com/aloncn/graphics-go@v0.0.1/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 cgo
     6  // +build darwin dragonfly freebsd linux netbsd solaris
     7  // +build !ppc64,!ppc64le
     8  
     9  #include <pthread.h>
    10  #include <stdio.h>
    11  #include <stdlib.h>
    12  #include <string.h> // strerror
    13  
    14  static pthread_cond_t runtime_init_cond = PTHREAD_COND_INITIALIZER;
    15  static pthread_mutex_t runtime_init_mu = PTHREAD_MUTEX_INITIALIZER;
    16  static int runtime_init_done;
    17  
    18  void
    19  x_cgo_sys_thread_create(void* (*func)(void*), void* arg) {
    20  	pthread_t p;
    21  	int err = pthread_create(&p, NULL, func, arg);
    22  	if (err != 0) {
    23  		fprintf(stderr, "pthread_create failed: %s", strerror(err));
    24  		abort();
    25  	}
    26  }
    27  
    28  void
    29  _cgo_wait_runtime_init_done() {
    30  	pthread_mutex_lock(&runtime_init_mu);
    31  	while (runtime_init_done == 0) {
    32  		pthread_cond_wait(&runtime_init_cond, &runtime_init_mu);
    33  	}
    34  	pthread_mutex_unlock(&runtime_init_mu);
    35  }
    36  
    37  void
    38  x_cgo_notify_runtime_init_done(void* dummy) {
    39  	pthread_mutex_lock(&runtime_init_mu);
    40  	runtime_init_done = 1;
    41  	pthread_cond_broadcast(&runtime_init_cond);
    42  	pthread_mutex_unlock(&runtime_init_mu);
    43  }