Change summary
util/process/process.go | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
Detailed changes
@@ -9,15 +9,25 @@ import (
func IsRunning(pid int) bool {
// never return no error in a unix system
process, err := os.FindProcess(pid)
-
if err != nil {
return false
}
// Signal 0 doesn't do anything but allow testing the process
err = process.Signal(syscall.Signal(0))
-
- // Todo: distinguish "you don't have access" and "process doesn't exist"
-
- return err == nil
+ if err == nil {
+ return true
+ }
+ if err.Error() == "os: process already finished" {
+ return false
+ }
+ if errno, ok := err.(syscall.Errno); ok {
+ switch errno {
+ case syscall.ESRCH:
+ return false
+ case syscall.EPERM:
+ return true
+ }
+ }
+ return false
}