inspect

/*
 *  call-seq:
 *     stat.inspect   => string
 *
 *  Override the inspection method.
 */

static VALUE
pst_inspect(st)
    VALUE st;
{
    VALUE pid;
    int status;
    VALUE str;
    char buf[256];

    pid = pst_pid(st);
    status = NUM2INT(st);

    snprintf(buf, sizeof(buf), "#<%s: pid=%ld", rb_class2name(CLASS_OF(st)), NUM2LONG(pid));
    str = rb_str_new2(buf);
    if (WIFSTOPPED(status)) {
        int stopsig = WSTOPSIG(status);
        const char *signame = ruby_signal_name(stopsig);
        if (signame) {
            snprintf(buf, sizeof(buf), ",stopped(SIG%s=%d)", signame, stopsig);
        }
        else {
            snprintf(buf, sizeof(buf), ",stopped(%d)", stopsig);
        }
        rb_str_cat2(str, buf);
    }
    if (WIFSIGNALED(status)) {
        int termsig = WTERMSIG(status);
        const char *signame = ruby_signal_name(termsig);
        if (signame) {
            snprintf(buf, sizeof(buf), ",signaled(SIG%s=%d)", signame, termsig);
        }
        else {
            snprintf(buf, sizeof(buf), ",signaled(%d)", termsig);
        }
        rb_str_cat2(str, buf);
    }
    if (WIFEXITED(status)) {
        snprintf(buf, sizeof(buf), ",exited(%d)", WEXITSTATUS(status));
        rb_str_cat2(str, buf);
    }
#ifdef WCOREDUMP
    if (WCOREDUMP(status)) {
        rb_str_cat2(str, ",coredumped");
    }
#endif
    rb_str_cat2(str, ">");
    return str;
}