Gecko [ 167.86.127.34 ]

Name	Size	Permission
exec	[ DIR ]	drwxr-xr-x
signal	[ DIR ]	drwxr-xr-x
user	[ DIR ]	drwxr-xr-x
dir.go	1.99 KB	-rw-r--r--
dir_darwin.go	1.94 KB	-rw-r--r--
dir_plan9.go	1.53 KB	-rw-r--r--
dir_unix.go	1.54 KB	-rw-r--r--
dir_windows.go	1.43 KB	-rw-r--r--
env.go	3.84 KB	-rw-r--r--
env_test.go	3.87 KB	-rw-r--r--
env_unix_test.go	1.27 KB	-rw-r--r--
error.go	4 KB	-rw-r--r--
error_errno.go	246 B	-rw-r--r--
error_plan9.go	234 B	-rw-r--r--
error_posix.go	568 B	-rw-r--r--
error_test.go	4.81 KB	-rw-r--r--
error_unix_test.go	1.52 KB	-rw-r--r--
error_windows_test.go	1.71 KB	-rw-r--r--
example_test.go	2.89 KB	-rw-r--r--
exec.go	5.52 KB	-rw-r--r--
exec_plan9.go	3.29 KB	-rw-r--r--
exec_posix.go	3.22 KB	-rw-r--r--
exec_unix.go	2.12 KB	-rw-r--r--
exec_windows.go	4.88 KB	-rw-r--r--
executable.go	774 B	-rw-r--r--
executable_darwin.go	613 B	-rw-r--r--
executable_freebsd.go	881 B	-rw-r--r--
executable_path.go	2.3 KB	-rw-r--r--
executable_plan9.go	399 B	-rw-r--r--
executable_procfs.go	868 B	-rw-r--r--
executable_solaris.go	695 B	-rw-r--r--
executable_test.go	1.99 KB	-rw-r--r--
executable_windows.go	641 B	-rw-r--r--
export_test.go	286 B	-rw-r--r--
export_unix_test.go	275 B	-rw-r--r--
export_windows_test.go	312 B	-rw-r--r--
fifo_test.go	1.98 KB	-rw-r--r--
file.go	17.69 KB	-rw-r--r--
file_plan9.go	14.12 KB	-rw-r--r--
file_posix.go	4.88 KB	-rw-r--r--
file_unix.go	12.07 KB	-rw-r--r--
file_windows.go	14.19 KB	-rw-r--r--
getwd.go	2.61 KB	-rw-r--r--
getwd_darwin.go	317 B	-rw-r--r--
os_test.go	58.09 KB	-rw-r--r--
os_unix_test.go	8.45 KB	-rw-r--r--
os_windows_test.go	29.5 KB	-rw-r--r--
path.go	1.99 KB	-rw-r--r--
path_plan9.go	497 B	-rw-r--r--
path_test.go	3.08 KB	-rw-r--r--
path_unix.go	1.59 KB	-rw-r--r--
path_windows.go	5.75 KB	-rw-r--r--
path_windows_test.go	2.46 KB	-rw-r--r--
pipe2_bsd.go	617 B	-rw-r--r--
pipe_bsd.go	800 B	-rw-r--r--
pipe_linux.go	1010 B	-rw-r--r--
pipe_test.go	10.32 KB	-rw-r--r--
proc.go	1.84 KB	-rw-r--r--
rawconn.go	992 B	-rw-r--r--
rawconn_test.go	1.13 KB	-rw-r--r--
removeall_at.go	4.72 KB	-rw-r--r--
removeall_noat.go	3.17 KB	-rw-r--r--
removeall_test.go	10.7 KB	-rw-r--r--
stat.go	733 B	-rw-r--r--
stat_aix.go	1.18 KB	-rw-r--r--
stat_darwin.go	1.19 KB	-rw-r--r--
stat_dragonfly.go	1.15 KB	-rw-r--r--
stat_freebsd.go	1.17 KB	-rw-r--r--
stat_js.go	1.2 KB	-rw-r--r--
stat_linux.go	1.16 KB	-rw-r--r--
stat_netbsd.go	1.16 KB	-rw-r--r--
stat_openbsd.go	1.15 KB	-rw-r--r--
stat_plan9.go	2.25 KB	-rw-r--r--
stat_solaris.go	1.15 KB	-rw-r--r--
stat_test.go	6.28 KB	-rw-r--r--
stat_unix.go	1.14 KB	-rw-r--r--
stat_windows.go	3.48 KB	-rw-r--r--
sticky_bsd.go	388 B	-rw-r--r--
sticky_notbsd.go	363 B	-rw-r--r--
str.go	729 B	-rw-r--r--
sys.go	294 B	-rw-r--r--
sys_aix.go	682 B	-rw-r--r--
sys_bsd.go	435 B	-rw-r--r--
sys_js.go	309 B	-rw-r--r--
sys_linux.go	1.04 KB	-rw-r--r--
sys_plan9.go	453 B	-rw-r--r--
sys_solaris.go	265 B	-rw-r--r--
sys_unix.go	545 B	-rw-r--r--
sys_windows.go	874 B	-rw-r--r--
timeout_test.go	13.28 KB	-rw-r--r--
types.go	4.18 KB	-rw-r--r--
types_plan9.go	823 B	-rw-r--r--
types_unix.go	782 B	-rw-r--r--
types_windows.go	6.27 KB	-rw-r--r--
wait_unimp.go	585 B	-rw-r--r--
wait_wait6.go	1.29 KB	-rw-r--r--
wait_waitid.go	1.33 KB	-rw-r--r--

Code Editor : exec.go

// Copyright 2009 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.

package os

import (
	"internal/testlog"
	"runtime"
	"sync"
	"sync/atomic"
	"syscall"
	"time"
)

// Process stores the information about a process created by StartProcess.
type Process struct {
	Pid    int
	handle uintptr      // handle is accessed atomically on Windows
	isdone uint32       // process has been successfully waited on, non zero if true
	sigMu  sync.RWMutex // avoid race between wait and signal
}

func newProcess(pid int, handle uintptr) *Process {
	p := &Process{Pid: pid, handle: handle}
	runtime.SetFinalizer(p, (*Process).Release)
	return p
}

func (p *Process) setDone() {
	atomic.StoreUint32(&p.isdone, 1)
}

func (p *Process) done() bool {
	return atomic.LoadUint32(&p.isdone) > 0
}

// ProcAttr holds the attributes that will be applied to a new process
// started by StartProcess.
type ProcAttr struct {
	// If Dir is non-empty, the child changes into the directory before
	// creating the process.
	Dir string
	// If Env is non-nil, it gives the environment variables for the
	// new process in the form returned by Environ.
	// If it is nil, the result of Environ will be used.
	Env []string
	// Files specifies the open files inherited by the new process. The
	// first three entries correspond to standard input, standard output, and
	// standard error. An implementation may support additional entries,
	// depending on the underlying operating system. A nil entry corresponds
	// to that file being closed when the process starts.
	Files []*File

// Operating system-specific process creation attributes.
	// Note that setting this field means that your program
	// may not execute properly or even compile on some
	// operating systems.
	Sys *syscall.SysProcAttr
}

// A Signal represents an operating system signal.
// The usual underlying implementation is operating system-dependent:
// on Unix it is syscall.Signal.
type Signal interface {
	String() string
	Signal() // to distinguish from other Stringers
}

// Getpid returns the process id of the caller.
func Getpid() int { return syscall.Getpid() }

// Getppid returns the process id of the caller's parent.
func Getppid() int { return syscall.Getppid() }

// FindProcess looks for a running process by its pid.
//
// The Process it returns can be used to obtain information
// about the underlying operating system process.
//
// On Unix systems, FindProcess always succeeds and returns a Process
// for the given pid, regardless of whether the process exists.
func FindProcess(pid int) (*Process, error) {
	return findProcess(pid)
}

// StartProcess starts a new process with the program, arguments and attributes
// specified by name, argv and attr. The argv slice will become os.Args in the
// new process, so it normally starts with the program name.
//
// If the calling goroutine has locked the operating system thread
// with runtime.LockOSThread and modified any inheritable OS-level
// thread state (for example, Linux or Plan 9 name spaces), the new
// process will inherit the caller's thread state.
//
// StartProcess is a low-level interface. The os/exec package provides
// higher-level interfaces.
//
// If there is an error, it will be of type *PathError.
func StartProcess(name string, argv []string, attr *ProcAttr) (*Process, error) {
	testlog.Open(name)
	return startProcess(name, argv, attr)
}

// Release releases any resources associated with the Process p,
// rendering it unusable in the future.
// Release only needs to be called if Wait is not.
func (p *Process) Release() error {
	return p.release()
}

// Kill causes the Process to exit immediately. Kill does not wait until
// the Process has actually exited. This only kills the Process itself,
// not any other processes it may have started.
func (p *Process) Kill() error {
	return p.kill()
}

// Wait waits for the Process to exit, and then returns a
// ProcessState describing its status and an error, if any.
// Wait releases any resources associated with the Process.
// On most operating systems, the Process must be a child
// of the current process or an error will be returned.
func (p *Process) Wait() (*ProcessState, error) {
	return p.wait()
}

// Signal sends a signal to the Process.
// Sending Interrupt on Windows is not implemented.
func (p *Process) Signal(sig Signal) error {
	return p.signal(sig)
}

// UserTime returns the user CPU time of the exited process and its children.
func (p *ProcessState) UserTime() time.Duration {
	return p.userTime()
}

// SystemTime returns the system CPU time of the exited process and its children.
func (p *ProcessState) SystemTime() time.Duration {
	return p.systemTime()
}

// Exited reports whether the program has exited.
func (p *ProcessState) Exited() bool {
	return p.exited()
}

// Success reports whether the program exited successfully,
// such as with exit status 0 on Unix.
func (p *ProcessState) Success() bool {
	return p.success()
}

// Sys returns system-dependent exit information about
// the process. Convert it to the appropriate underlying
// type, such as syscall.WaitStatus on Unix, to access its contents.
func (p *ProcessState) Sys() interface{} {
	return p.sys()
}

// SysUsage returns system-dependent resource usage information about
// the exited process. Convert it to the appropriate underlying
// type, such as *syscall.Rusage on Unix, to access its contents.
// (On Unix, *syscall.Rusage matches struct rusage as defined in the
// getrusage(2) manual page.)
func (p *ProcessState) SysUsage() interface{} {
	return p.sysUsage()
}

${this.title}

Code Editor : exec.go