diff options
| -rw-r--r-- | src/pkg/os/exec.go | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/pkg/os/exec.go b/src/pkg/os/exec.go index 9ae81c0d5..ceb52999b 100644 --- a/src/pkg/os/exec.go +++ b/src/pkg/os/exec.go @@ -98,6 +98,55 @@ func Wait(pid int, options int) (w *Waitmsg, err Error) { return w, nil; } +// Convert i to decimal string. +func itod(i int) string { + if i == 0 { + return "0" + } + + u := uint64(i); + if i < 0 { + u = -u; + } + + // Assemble decimal in reverse order. + var b [32]byte; + bp := len(b); + for ; u > 0; u /= 10 { + bp--; + b[bp] = byte(u%10) + '0' + } + + if i < 0 { + bp--; + b[bp] = '-' + } + + return string(b[bp:len(b)]) +} + +func (w Waitmsg) String() string { + // TODO(austin) Use signal names when possible? + res := ""; + switch { + case w.Exited(): + res = "exit status " + itod(w.ExitStatus()); + case w.Signaled(): + res = "signal " + itod(w.Signal()); + case w.Stopped(): + res = "stop signal " + itod(w.StopSignal()); + if w.StopSignal() == syscall.SIGTRAP && w.TrapCause() != 0 { + res += " (trap " + itod(w.TrapCause()) + ")"; + } + case w.Continued(): + res = "continued"; + } + if w.CoreDump() { + res += " (core dumped)" + } + return res; +} + // Getpid returns the process id of the caller. func Getpid() int { p, r2, e := syscall.Syscall(syscall.SYS_GETPID, 0, 0, 0); |