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 } 39
