Method: Process.waitall

Defined in:
process.c

.waitall ⇒ Array

Waits for all children, returns an array of 2-element arrays; each subarray contains the integer pid and Process::Status status for one of the reaped child processes:

pid0 = Process.spawn('ruby', '-e', 'exit 13') # => 325470
pid1 = Process.spawn('ruby', '-e', 'exit 14') # => 325495
Process.waitall
# => [[325470, #<Process::Status: pid 325470 exit 13>], [325495, #<Process::Status: pid 325495 exit 14>]]

Returns:



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# File 'process.c', line 1511

static VALUE
proc_waitall(VALUE _)
{
    VALUE result;
    rb_pid_t pid;
    int status;

    result = rb_ary_new();
    rb_last_status_clear();

    for (pid = -1;;) {
        pid = rb_waitpid(-1, &status, 0);
        if (pid == -1) {
            int e = errno;
            if (e == ECHILD)
                break;
            rb_syserr_fail(e, 0);
        }
        rb_ary_push(result, rb_assoc_new(PIDT2NUM(pid), rb_last_status_get()));
    }
    return result;
}