github.com/huandu/go@v0.0.0-20151114150818-04e615e41150/misc/cgo/test/sigprocmask_linux.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  #include <signal.h>
     6  #include <stdlib.h>
     7  #include <pthread.h>
     8  #include <stdio.h>
     9  #include <unistd.h>
    10  
    11  extern void IntoGoAndBack();
    12  
    13  int CheckBlocked() {
    14  	sigset_t mask;
    15  	sigprocmask(SIG_BLOCK, NULL, &mask);
    16  	return sigismember(&mask, SIGIO);
    17  }
    18  
    19  static void* sigthreadfunc(void* unused) {
    20  	sigset_t mask;
    21  	sigemptyset(&mask);
    22  	sigaddset(&mask, SIGIO);
    23  	sigprocmask(SIG_BLOCK, &mask, NULL);
    24  	IntoGoAndBack();
    25  	return NULL;
    26  }
    27  
    28  int RunSigThread() {
    29  	pthread_t thread;
    30  	int r;
    31  
    32  	r = pthread_create(&thread, NULL, &sigthreadfunc, NULL);
    33  	if (r != 0)
    34  		return r;
    35  	return pthread_join(thread, NULL);
    36  }