libgo/misc/cgo/test/sigprocmask.c

   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 !windows
   6
   7 #include <signal.h>
   8 #include <stdlib.h>
   9 #include <pthread.h>
  10 #include <stdio.h>
  11 #include <unistd.h>
  12
  13 extern void IntoGoAndBack();
  14
  15 int CheckBlocked() {
  16         sigset_t mask;
  17         sigprocmask(SIG_BLOCK, NULL, &mask);
  18         return sigismember(&mask, SIGIO);
  19 }
  20
  21 static void* sigthreadfunc(void* unused) {
  22         sigset_t mask;
  23         sigemptyset(&mask);
  24         sigaddset(&mask, SIGIO);
  25         sigprocmask(SIG_BLOCK, &mask, NULL);
  26         IntoGoAndBack();
  27         return NULL;
  28 }
  29
  30 int RunSigThread() {
  31         pthread_t thread;
  32         int r;
  33
  34         r = pthread_create(&thread, NULL, &sigthreadfunc, NULL);
  35         if (r != 0)
  36                 return r;
  37         return pthread_join(thread, NULL);
  38 }