github.com/SandwichDev/go-internals@v0.0.0-20210605002614-12311ac6b2c5/testlog/exit.go (about)

     1  // Copyright 2020 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  package testlog
     6  
     7  import "sync"
     8  
     9  // PanicOnExit0 reports whether to panic on a call to os.Exit(0).
    10  // This is in the testlog package because, like other definitions in
    11  // package testlog, it is a hook between the testing package and the
    12  // os package. This is used to ensure that an early call to os.Exit(0)
    13  // does not cause a test to pass.
    14  func PanicOnExit0() bool {
    15  	panicOnExit0.mu.Lock()
    16  	defer panicOnExit0.mu.Unlock()
    17  	return panicOnExit0.val
    18  }
    19  
    20  // panicOnExit0 is the flag used for PanicOnExit0. This uses a lock
    21  // because the value can be cleared via a timer call that may race
    22  // with calls to os.Exit
    23  var panicOnExit0 struct {
    24  	mu  sync.Mutex
    25  	val bool
    26  }
    27  
    28  // SetPanicOnExit0 sets panicOnExit0 to v.
    29  func SetPanicOnExit0(v bool) {
    30  	panicOnExit0.mu.Lock()
    31  	defer panicOnExit0.mu.Unlock()
    32  	panicOnExit0.val = v
    33  }