/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * This test program demonstrates that PR_ExitMonitor needs to add a
 * reference to the PRMonitor object before unlocking the internal
 * mutex.
 */

#include "prlog.h"
#include "prmon.h"
#include "prthread.h"

#include <stdio.h>
#include <stdlib.h>

/* Protected by the PRMonitor 'mon' in the main function. */
static PRBool done = PR_FALSE;

static void ThreadFunc(void* arg) {
  PRMonitor* mon = (PRMonitor*)arg;
  PRStatus rv;

  PR_EnterMonitor(mon);
  done = PR_TRUE;
  rv = PR_Notify(mon);
  PR_ASSERT(rv == PR_SUCCESS);
  rv = PR_ExitMonitor(mon);
  PR_ASSERT(rv == PR_SUCCESS);
}

int main() {
  PRMonitor* mon;
  PRThread* thread;
  PRStatus rv;

  mon = PR_NewMonitor();
  if (!mon) {
    fprintf(stderr, "PR_NewMonitor failed\n");
    exit(1);
  }

  thread = PR_CreateThread(PR_USER_THREAD, ThreadFunc, mon, PR_PRIORITY_NORMAL,
                           PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
  if (!thread) {
    fprintf(stderr, "PR_CreateThread failed\n");
    exit(1);
  }

  PR_EnterMonitor(mon);
  while (!done) {
    rv = PR_Wait(mon, PR_INTERVAL_NO_TIMEOUT);
    PR_ASSERT(rv == PR_SUCCESS);
  }
  rv = PR_ExitMonitor(mon);
  PR_ASSERT(rv == PR_SUCCESS);

  /*
   * Do you agree it should be safe to destroy 'mon' now?
   * See bug 844784 comment 27.
   */
  PR_DestroyMonitor(mon);

  rv = PR_JoinThread(thread);
  PR_ASSERT(rv == PR_SUCCESS);

  printf("PASS\n");
  return 0;
}