/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "prprf.h"
#include "prio.h"
#include "prinit.h"
#include "prthread.h"
#include "prinrval.h"

#include "plgetopt.h"

#include <stdlib.h>

static void PR_CALLBACK Thread(void* sleep) {
  PR_Sleep(PR_SecondsToInterval((PRUint32)sleep));
  printf("Thread exiting\n");
}

static void Help(void) {
  PRFileDesc* err = PR_GetSpecialFD(PR_StandardError);
  PR_fprintf(err, "Cleanup usage: [-g] [-s n] [-t n] [-c n] [-h]\n");
  PR_fprintf(err, "\t-c   Call cleanup before exiting     (default: false)\n");
  PR_fprintf(err, "\t-G   Use global threads only         (default: local)\n");
  PR_fprintf(err, "\t-t n Number of threads involved      (default: 1)\n");
  PR_fprintf(err, "\t-s n Seconds thread(s) should dally  (defaut: 10)\n");
  PR_fprintf(err, "\t-S n Seconds main() should dally     (defaut: 5)\n");
  PR_fprintf(err, "\t-C n Value to set concurrency        (default 1)\n");
  PR_fprintf(err, "\t-h   This message and nothing else\n");
} /* Help */

int main(int argc, char** argv) {
  PLOptStatus os;
  PRBool cleanup = PR_FALSE;
  PRThreadScope type = PR_LOCAL_THREAD;
  PRFileDesc* err = PR_GetSpecialFD(PR_StandardError);
  PLOptState* opt = PL_CreateOptState(argc, argv, "Ghs:S:t:cC:");
  PRIntn concurrency = 1, child_sleep = 10, main_sleep = 5, threads = 1;

  PR_STDIO_INIT();
  while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
    if (PL_OPT_BAD == os) {
      continue;
    }
    switch (opt->option) {
      case 'c': /* call PR_Cleanup() before exiting */
        cleanup = PR_TRUE;
        break;
      case 'G': /* local vs global threads */
        type = PR_GLOBAL_THREAD;
        break;
      case 's': /* time to sleep */
        child_sleep = atoi(opt->value);
        break;
      case 'S': /* time to sleep */
        main_sleep = atoi(opt->value);
        break;
      case 'C': /* number of cpus to create */
        concurrency = atoi(opt->value);
        break;
      case 't': /* number of threads to create */
        threads = atoi(opt->value);
        break;
      case 'h':   /* user wants some guidance */
        Help();   /* so give him an earful */
        return 2; /* but not a lot else */
        break;
      default:
        break;
    }
  }
  PL_DestroyOptState(opt);

  PR_fprintf(err, "Cleanup settings\n");
  PR_fprintf(err, "\tThread type: %s\n",
             (PR_LOCAL_THREAD == type) ? "LOCAL" : "GLOBAL");
  PR_fprintf(err, "\tConcurrency: %d\n", concurrency);
  PR_fprintf(err, "\tNumber of threads: %d\n", threads);
  PR_fprintf(err, "\tThread sleep: %d\n", child_sleep);
  PR_fprintf(err, "\tMain sleep: %d\n", main_sleep);
  PR_fprintf(err, "\tCleanup will %sbe called\n\n", (cleanup) ? "" : "NOT ");

  PR_SetConcurrency(concurrency);

  while (threads-- > 0)
    (void)PR_CreateThread(PR_USER_THREAD, Thread, (void*)child_sleep,
                          PR_PRIORITY_NORMAL, type, PR_UNJOINABLE_THREAD, 0);
  PR_Sleep(PR_SecondsToInterval(main_sleep));

  if (cleanup) {
    PR_Cleanup();
  }

  PR_fprintf(err, "main() exiting\n");
  return 0;
} /* main */
