diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/os/exec.go | 4 | ||||
| -rw-r--r-- | src/os/exec_unix_test.go | 18 |
2 files changed, 21 insertions, 1 deletions
diff --git a/src/os/exec.go b/src/os/exec.go index d01ca592ba..ed5a75c4d1 100644 --- a/src/os/exec.go +++ b/src/os/exec.go @@ -86,7 +86,9 @@ func Getppid() int { return syscall.Getppid() } // 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. +// for the given pid, regardless of whether the process exists. To test whether +// the process actually exists, see whether p.Signal(syscall.Signal(0)) reports +// an error. func FindProcess(pid int) (*Process, error) { return findProcess(pid) } diff --git a/src/os/exec_unix_test.go b/src/os/exec_unix_test.go index 82c072a746..26045192ff 100644 --- a/src/os/exec_unix_test.go +++ b/src/os/exec_unix_test.go @@ -9,6 +9,7 @@ package os_test import ( "internal/testenv" . "os" + "syscall" "testing" ) @@ -25,3 +26,20 @@ func TestErrProcessDone(t *testing.T) { t.Errorf("got %v want %v", got, ErrProcessDone) } } + +func TestUNIXProcessAlive(t *testing.T) { + testenv.MustHaveGoBuild(t) + t.Parallel() + + p, err := StartProcess(testenv.GoToolPath(t), []string{"sleep", "1"}, &ProcAttr{}) + if err != nil { + t.Skipf("starting test process: %v", err) + } + defer p.Kill() + + proc, _ := FindProcess(p.Pid) + err = proc.Signal(syscall.Signal(0)) + if err != nil { + t.Errorf("OS reported error for running process: %v", err) + } +} |