diff options
Diffstat (limited to 'libgo/go/os/exec.go')
-rw-r--r-- | libgo/go/os/exec.go | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/libgo/go/os/exec.go b/libgo/go/os/exec.go index 9d80ccfbed4..f62caf9a069 100644 --- a/libgo/go/os/exec.go +++ b/libgo/go/os/exec.go @@ -39,126 +39,6 @@ type ProcAttr struct { Files []*File } -// StartProcess starts a new process with the program, arguments and attributes -// specified by name, argv and attr. -func StartProcess(name string, argv []string, attr *ProcAttr) (p *Process, err Error) { - sysattr := &syscall.ProcAttr{ - Dir: attr.Dir, - Env: attr.Env, - } - if sysattr.Env == nil { - sysattr.Env = Environ() - } - // Create array of integer (system) fds. - intfd := make([]int, len(attr.Files)) - for i, f := range attr.Files { - if f == nil { - intfd[i] = -1 - } else { - intfd[i] = f.Fd() - } - } - sysattr.Files = intfd - - pid, h, e := syscall.StartProcess(name, argv, sysattr) - if e != 0 { - return nil, &PathError{"fork/exec", name, Errno(e)} - } - return newProcess(pid, h), nil -} - -// Exec replaces the current process with an execution of the -// named binary, with arguments argv and environment envv. -// If successful, Exec never returns. If it fails, it returns an Error. -// StartProcess is almost always a better way to execute a program. -func Exec(name string, argv []string, envv []string) Error { - if envv == nil { - envv = Environ() - } - e := syscall.Exec(name, argv, envv) - if e != 0 { - return &PathError{"exec", name, Errno(e)} - } - return nil -} - -// TODO(rsc): Should os implement its own syscall.WaitStatus -// wrapper with the methods, or is exposing the underlying one enough? -// -// TODO(rsc): Certainly need to have Rusage struct, -// since syscall one might have different field types across -// different OS. - -// Waitmsg stores the information about an exited process as reported by Wait. -type Waitmsg struct { - Pid int // The process's id. - syscall.WaitStatus // System-dependent status info. - Rusage *syscall.Rusage // System-dependent resource usage info. -} - -// Wait waits for process pid to exit or stop, and then returns a -// Waitmsg describing its status and an Error, if any. The options -// (WNOHANG etc.) affect the behavior of the Wait call. -// Wait is equivalent to calling FindProcess and then Wait -// and Release on the result. -func Wait(pid int, options int) (w *Waitmsg, err Error) { - p, e := FindProcess(pid) - if e != nil { - return nil, e - } - defer p.Release() - return p.Wait(options) -} - -// 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:]) -} - -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 { return syscall.Getpid() } |