sigprocmask.go

     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  //go:build !windows
     6  // +build !windows
     7  
     8  package cgotest
     9  
    10  /*
    11  #cgo CFLAGS: -pthread
    12  #cgo LDFLAGS: -pthread
    13  extern int RunSigThread();
    14  extern int CheckBlocked();
    15  */
    16  import "C"
    17  import (
    18  	"os"
    19  	"os/signal"
    20  	"syscall"
    21  	"testing"
    22  )
    23  
    24  var blocked bool
    25  
    26  //export IntoGoAndBack
    27  func IntoGoAndBack() {
    28  	// Verify that SIGIO stays blocked on the C thread
    29  	// even when unblocked for signal.Notify().
    30  	signal.Notify(make(chan os.Signal), syscall.SIGIO)
    31  	blocked = C.CheckBlocked() != 0
    32  }
    33  
    34  func testSigprocmask(t *testing.T) {
    35  	if r := C.RunSigThread(); r != 0 {
    36  		t.Errorf("pthread_create/pthread_join failed: %d", r)
    37  	}
    38  	if !blocked {
    39  		t.Error("Go runtime unblocked SIGIO")
    40  	}
    41  }
    42
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