/*
* Force the parent process (ppid) to wait for its child process (pid).
*/
static int
reap(char *arg, pid_t *reap_pid, int *exit_status)
{
struct ps_prochandle *Pr;
siginfo_t siginfo;
psinfo_t psinfo;
prusage_t usage;
pid_t pid, ppid;
time_t elapsed;
int gret;
/*
* get the specified pid and the psinfo struct
*/
if ((pid = proc_arg_psinfo(arg, PR_ARG_PIDS, &psinfo, &gret)) == -1) {
(void) fprintf(stderr, "%s: cannot examine %s: %s\n",
command, arg, Pgrab_error(gret));
return (1);
}
if (psinfo.pr_nlwp != 0) {
(void) fprintf(stderr, "%s: process not defunct: %d\n",
command, (int)pid);
return (1);
}
*exit_status = psinfo.pr_wstat;
*reap_pid = psinfo.pr_pid;
ppid = psinfo.pr_ppid;
if (ppid == 1) {
(void) fprintf(stderr, "%s: Failed to reap %d: the only "
"non-defunct ancestor is 'init'\n", command,
(int)pid);
return (1);
}
if (proc_usage(pid, &usage, &gret) == 0) {
elapsed = usage.pr_tstamp.tv_sec - usage.pr_term.tv_sec;
} else {
(void) fprintf(stderr, "%s: cannot examine %d: %s\n",
command, (int)pid, Pgrab_error(gret));
return (1);
}
if ((Fflag == 0) && (elapsed < NOREAP_TIME)) {
(void) fprintf(stderr, "%s: unsafe to reap %d; it has been "
"defunct less than %d seconds\n", command, (int)pid,
NOREAP_TIME);
return (1);
}
if ((Pr = Pgrab(ppid, Fflag | PGRAB_NOSTOP, &gret)) == NULL) {
(void) fprintf(stderr, "%s: cannot examine %d: %s\n", command,
(int)ppid, Pgrab_error(gret));
return (1);
}
if ((Fflag == 0) && (Pstate(Pr) == PS_STOP)) {
Prelease(Pr, 0);
(void) fprintf(stderr, "%s: unsafe to reap %d; parent is "
"stopped and may reap status upon restart\n", command,
(int)pid);
return (1);
}
/*
* Pstop() will fail if the process to be stopped has become a zombie.
* This means that we can say with certainty that the child of this
* process has not changed parents (i.e. been reparented to init) once
* the Pstop() succeeds.
*/
if (Pstop(Pr, 1000) != 0) {
Prelease(Pr, 0);
(void) fprintf(stderr, "%s: failed to stop %d: %s", command,
(int)ppid, strerror(errno));
return (1);
}
if (pr_waitid(Pr, P_PID, pid, &siginfo, WEXITED|WNOHANG) != 0) {
Prelease(Pr, 0);
(void) fprintf(stderr, "%s: waitid() in process %d failed: %s",
command, (int)ppid, strerror(errno));
return (1);
}
Prelease(Pr, 0);
return (0);
}
/*
* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
* Method: suspend0
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0
(JNIEnv *env, jobject this_obj) {
jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
// for now don't check return value. revisit this again.
Pstop((struct ps_prochandle*) p_ps_prochandle, 1000);
}
