blob: 6c44aae258b68f6f405bc159eaec5a2fa3515697 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
package daemon
import (
"errors"
"os"
)
var errNotSupported = errors.New("daemon: Non-POSIX OS is not supported")
// Mark of daemon process - system environment variable _GO_DAEMON=1
const (
MARK_NAME = "_GO_DAEMON"
MARK_VALUE = "1"
)
// Default file permissions for log and pid files.
const FILE_PERM = os.FileMode(0640)
// WasReborn returns true in child process (daemon) and false in parent process.
func WasReborn() bool {
return os.Getenv(MARK_NAME) == MARK_VALUE
}
// Reborn runs second copy of current process in the given context.
// function executes separate parts of code in child process and parent process
// and provides demonization of child process. It look similar as the
// fork-daemonization, but goroutine-safe.
// In success returns *os.Process in parent process and nil in child process.
// Otherwise returns error.
func (d *Context) Reborn() (child *os.Process, err error) {
return d.reborn()
}
// Search searches daemons process by given in context pid file name.
// If success returns pointer on daemons os.Process structure,
// else returns error. Returns nil if filename is empty.
func (d *Context) Search() (daemon *os.Process, err error) {
return d.search()
}
// Release provides correct pid-file release in daemon.
func (d *Context) Release() (err error) {
return d.release()
}
|
