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Current Path: /opt/golang/1.22.0/src/os/exec

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📁 ..
📄 bench_test.go(492 B)
📄 dot_test.go(6.13 KB)
📄 env_test.go(1.66 KB)
📄 example_test.go(3.49 KB)
📄 exec.go(41.16 KB)
📄 exec_linux_test.go(1.23 KB)
📄 exec_other_test.go(286 B)
📄 exec_plan9.go(608 B)
📄 exec_posix_test.go(6.79 KB)
📄 exec_test.go(47.62 KB)
📄 exec_unix.go(635 B)
📄 exec_unix_test.go(313 B)
📄 exec_windows.go(721 B)
📄 exec_windows_test.go(2.37 KB)
📁 internal
📄 internal_test.go(1.21 KB)
📄 lp_linux_test.go(2.33 KB)
📄 lp_plan9.go(1.94 KB)
📄 lp_test.go(737 B)
📄 lp_unix.go(2.44 KB)
📄 lp_unix_test.go(762 B)
📄 lp_wasm.go(1012 B)
📄 lp_windows.go(5.98 KB)
📄 lp_windows_test.go(16.31 KB)
📄 read3.go(2.16 KB)

Editing: exec_linux_test.go

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build linux && cgo

// On systems that use glibc, calling malloc can create a new arena,
// and creating a new arena can read /sys/devices/system/cpu/online.
// If we are using cgo, we will call malloc when creating a new thread.
// That can break TestExtraFiles if we create a new thread that creates
// a new arena and opens the /sys file while we are checking for open
// file descriptors. Work around the problem by creating threads up front.
// See issue 25628.

package exec_test

import (
	"os"
	"sync"
	"syscall"
	"time"
)

func init() {
	if os.Getenv("GO_EXEC_TEST_PID") == "" {
		return
	}

// Start some threads. 10 is arbitrary but intended to be enough
	// to ensure that the code won't have to create any threads itself.
	// In particular this should be more than the number of threads
	// the garbage collector might create.
	const threads = 10

var wg sync.WaitGroup
	wg.Add(threads)
	ts := syscall.NsecToTimespec((100 * time.Microsecond).Nanoseconds())
	for i := 0; i < threads; i++ {
		go func() {
			defer wg.Done()
			syscall.Nanosleep(&ts, nil)
		}()
	}
	wg.Wait()
}

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Editing: exec_linux_test.go

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