Source file src/syscall/forkpipe.go

     1  // Copyright 2011 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 aix || darwin
     6  
     7  package syscall
     8  
     9  // forkExecPipe opens a pipe and non-atomically sets O_CLOEXEC on both file
    10  // descriptors.
    11  func forkExecPipe(p []int) error {
    12  	err := Pipe(p)
    13  	if err != nil {
    14  		return err
    15  	}
    16  	_, err = fcntl(p[0], F_SETFD, FD_CLOEXEC)
    17  	if err != nil {
    18  		return err
    19  	}
    20  	_, err = fcntl(p[1], F_SETFD, FD_CLOEXEC)
    21  	return err
    22  }
    23  
    24  func acquireForkLock() {
    25  	ForkLock.Lock()
    26  }
    27  
    28  func releaseForkLock() {
    29  	ForkLock.Unlock()
    30  }
    31  

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