firefox/nsprpub/pr/tests/multiwait.c

/* -*- 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 "prio.h"
#include "prprf.h"
#include "prlog.h"
#include "prmem.h"
#include "pratom.h"
#include "prlock.h"
#include "prmwait.h"
#include "prclist.h"
#include "prerror.h"
#include "prinrval.h"
#include "prnetdb.h"
#include "prthread.h"

#include "plstr.h"
#include "plerror.h"
#include "plgetopt.h"

#include <string.h>

typedef struct Shared {
  const char* title;
  PRLock* list_lock;
  PRWaitGroup* group;
  PRIntervalTime timeout;
} Shared;

typedef enum Verbosity { silent, quiet, chatty, noisy } Verbosity;

#ifdef DEBUG
#  define PORT_INC_DO +100
#else
#  define PORT_INC_DO
#endif
#ifdef IS_64
#  define PORT_INC_3264 +200
#else
#  define PORT_INC_3264
#endif

static PRFileDesc* debug = NULL;
static PRInt32 desc_allocated = 0;
static PRUint16 default_port = 12273 PORT_INC_DO PORT_INC_3264;
static enum Verbosity verbosity = quiet;
static PRInt32 ops_required = 1000, ops_done = 0;
static PRThreadScope thread_scope = PR_LOCAL_THREAD;
static PRIntn client_threads = 20, worker_threads = 2, wait_objects = 50;

#if defined(DEBUG)
#  define MW_ASSERT(_expr) \
    ((_expr) ? ((void)0) : _MW_Assert(#_expr, __FILE__, __LINE__))
static void _MW_Assert(const char* s, const char* file, PRIntn ln) {
  if (NULL != debug) {
    PL_FPrintError(debug, NULL);
  }
  PR_Assert(s, file, ln);
} /* _MW_Assert */
#else
#  define MW_ASSERT(_expr)
#endif

static void PrintRecvDesc(PRRecvWait* desc, const char* msg) {
  const char* tag[] = {"PR_MW_INTERRUPT", "PR_MW_TIMEOUT", "PR_MW_FAILURE",
                       "PR_MW_SUCCESS", "PR_MW_PENDING"};
  PR_fprintf(debug, "%s: PRRecvWait(@0x%x): {fd: 0x%x, outcome: %s, tmo: %u}\n",
             msg, desc, desc->fd, tag[desc->outcome + 3], desc->timeout);
} /* PrintRecvDesc */

static Shared* MakeShared(const char* title) {
  Shared* shared = PR_NEWZAP(Shared);
  shared->group = PR_CreateWaitGroup(1);
  shared->timeout = PR_SecondsToInterval(1);
  shared->list_lock = PR_NewLock();
  shared->title = title;
  return shared;
} /* MakeShared */

static void DestroyShared(Shared* shared) {
  PRStatus rv;
  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: destroying group\n", shared->title);
  }
  rv = PR_DestroyWaitGroup(shared->group);
  MW_ASSERT(PR_SUCCESS == rv);
  PR_DestroyLock(shared->list_lock);
  PR_DELETE(shared);
} /* DestroyShared */

static PRRecvWait* CreateRecvWait(PRFileDesc* fd, PRIntervalTime timeout) {
  PRRecvWait* desc_out = PR_NEWZAP(PRRecvWait);
  MW_ASSERT(NULL != desc_out);

  MW_ASSERT(NULL != fd);
  desc_out->fd = fd;
  desc_out->timeout = timeout;
  desc_out->buffer.length = 120;
  desc_out->buffer.start = PR_CALLOC(120);

  PR_AtomicIncrement(&desc_allocated);

  if (verbosity > chatty) {
    PrintRecvDesc(desc_out, "Allocated");
  }
  return desc_out;
} /* CreateRecvWait */

static void DestroyRecvWait(PRRecvWait* desc_out) {
  if (verbosity > chatty) {
    PrintRecvDesc(desc_out, "Destroying");
  }
  PR_Close(desc_out->fd);
  if (NULL != desc_out->buffer.start) {
    PR_DELETE(desc_out->buffer.start);
  }
  PR_Free(desc_out);
  (void)PR_AtomicDecrement(&desc_allocated);
} /* DestroyRecvWait */

static void CancelGroup(Shared* shared) {
  PRRecvWait* desc_out;

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s Reclaiming wait descriptors\n", shared->title);
  }

  do {
    desc_out = PR_CancelWaitGroup(shared->group);
    if (NULL != desc_out) {
      DestroyRecvWait(desc_out);
    }
  } while (NULL != desc_out);

  MW_ASSERT(0 == desc_allocated);
  MW_ASSERT(PR_GROUP_EMPTY_ERROR == PR_GetError());
} /* CancelGroup */

static void PR_CALLBACK ClientThread(void* arg) {
  PRStatus rv;
  PRInt32 bytes;
  PRIntn empty_flags = 0;
  PRNetAddr server_address;
  unsigned char buffer[100];
  Shared* shared = (Shared*)arg;
  PRFileDesc* server = PR_NewTCPSocket();
  if ((NULL == server) && (PR_PENDING_INTERRUPT_ERROR == PR_GetError())) {
    return;
  }
  MW_ASSERT(NULL != server);

  if (verbosity > chatty) {
    PR_fprintf(debug, "%s: Server socket @0x%x\n", shared->title, server);
  }

  /* Initialize the buffer so that Purify won't complain */
  memset(buffer, 0, sizeof(buffer));

  rv = PR_InitializeNetAddr(PR_IpAddrLoopback, default_port, &server_address);
  MW_ASSERT(PR_SUCCESS == rv);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: Client opening connection\n", shared->title);
  }
  rv = PR_Connect(server, &server_address, PR_INTERVAL_NO_TIMEOUT);

  if (PR_FAILURE == rv) {
    if (verbosity > silent) {
      PL_FPrintError(debug, "Client connect failed");
    }
    return;
  }

  while (ops_done < ops_required) {
    bytes = PR_Send(server, buffer, sizeof(buffer), empty_flags,
                    PR_INTERVAL_NO_TIMEOUT);
    if ((-1 == bytes) && (PR_PENDING_INTERRUPT_ERROR == PR_GetError())) {
      break;
    }
    MW_ASSERT(sizeof(buffer) == bytes);
    if (verbosity > chatty)
      PR_fprintf(debug, "%s: Client sent %d bytes\n", shared->title,
                 sizeof(buffer));
    bytes = PR_Recv(server, buffer, sizeof(buffer), empty_flags,
                    PR_INTERVAL_NO_TIMEOUT);
    if (verbosity > chatty)
      PR_fprintf(debug, "%s: Client received %d bytes\n", shared->title,
                 sizeof(buffer));
    if ((-1 == bytes) && (PR_PENDING_INTERRUPT_ERROR == PR_GetError())) {
      break;
    }
    MW_ASSERT(sizeof(buffer) == bytes);
    PR_Sleep(shared->timeout);
  }
  rv = PR_Close(server);
  MW_ASSERT(PR_SUCCESS == rv);

} /* ClientThread */

static void OneInThenCancelled(Shared* shared) {
  PRStatus rv;
  PRRecvWait *desc_out, *desc_in = PR_NEWZAP(PRRecvWait);

  shared->timeout = PR_INTERVAL_NO_TIMEOUT;

  desc_in->fd = PR_NewTCPSocket();
  desc_in->timeout = shared->timeout;

  if (verbosity > chatty) {
    PrintRecvDesc(desc_in, "Adding desc");
  }

  rv = PR_AddWaitFileDesc(shared->group, desc_in);
  MW_ASSERT(PR_SUCCESS == rv);

  if (verbosity > chatty) {
    PrintRecvDesc(desc_in, "Cancelling");
  }
  rv = PR_CancelWaitFileDesc(shared->group, desc_in);
  MW_ASSERT(PR_SUCCESS == rv);

  desc_out = PR_WaitRecvReady(shared->group);
  MW_ASSERT(desc_out == desc_in);
  MW_ASSERT(PR_MW_INTERRUPT == desc_out->outcome);
  MW_ASSERT(PR_PENDING_INTERRUPT_ERROR == PR_GetError());
  if (verbosity > chatty) {
    PrintRecvDesc(desc_out, "Ready");
  }

  rv = PR_Close(desc_in->fd);
  MW_ASSERT(PR_SUCCESS == rv);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: destroying group\n", shared->title);
  }

  PR_DELETE(desc_in);
} /* OneInThenCancelled */

static void OneOpOneThread(Shared* shared) {
  PRStatus rv;
  PRRecvWait *desc_out, *desc_in = PR_NEWZAP(PRRecvWait);

  desc_in->fd = PR_NewTCPSocket();
  desc_in->timeout = shared->timeout;

  if (verbosity > chatty) {
    PrintRecvDesc(desc_in, "Adding desc");
  }

  rv = PR_AddWaitFileDesc(shared->group, desc_in);
  MW_ASSERT(PR_SUCCESS == rv);
  desc_out = PR_WaitRecvReady(shared->group);
  MW_ASSERT(desc_out == desc_in);
  MW_ASSERT(PR_MW_TIMEOUT == desc_out->outcome);
  MW_ASSERT(PR_IO_TIMEOUT_ERROR == PR_GetError());
  if (verbosity > chatty) {
    PrintRecvDesc(desc_out, "Ready");
  }

  rv = PR_Close(desc_in->fd);
  MW_ASSERT(PR_SUCCESS == rv);

  PR_DELETE(desc_in);
} /* OneOpOneThread */

static void ManyOpOneThread(Shared* shared) {
  PRStatus rv;
  PRIntn index;
  PRRecvWait* desc_in;
  PRRecvWait* desc_out;

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: adding %d descs\n", shared->title, wait_objects);
  }

  for (index = 0; index < wait_objects; ++index) {
    desc_in = CreateRecvWait(PR_NewTCPSocket(), shared->timeout);

    rv = PR_AddWaitFileDesc(shared->group, desc_in);
    MW_ASSERT(PR_SUCCESS == rv);
  }

  while (ops_done < ops_required) {
    desc_out = PR_WaitRecvReady(shared->group);
    MW_ASSERT(PR_MW_TIMEOUT == desc_out->outcome);
    MW_ASSERT(PR_IO_TIMEOUT_ERROR == PR_GetError());
    if (verbosity > chatty) {
      PrintRecvDesc(desc_out, "Ready/readding");
    }
    rv = PR_AddWaitFileDesc(shared->group, desc_out);
    MW_ASSERT(PR_SUCCESS == rv);
    (void)PR_AtomicIncrement(&ops_done);
  }

  CancelGroup(shared);
} /* ManyOpOneThread */

static void PR_CALLBACK SomeOpsThread(void* arg) {
  PRRecvWait* desc_out;
  PRStatus rv = PR_SUCCESS;
  Shared* shared = (Shared*)arg;
  do /* until interrupted */
  {
    desc_out = PR_WaitRecvReady(shared->group);
    if (NULL == desc_out) {
      MW_ASSERT(PR_PENDING_INTERRUPT_ERROR == PR_GetError());
      if (verbosity > quiet) {
        PR_fprintf(debug, "Aborted\n");
      }
      break;
    }
    MW_ASSERT(PR_MW_TIMEOUT == desc_out->outcome);
    MW_ASSERT(PR_IO_TIMEOUT_ERROR == PR_GetError());
    if (verbosity > chatty) {
      PrintRecvDesc(desc_out, "Ready");
    }

    if (verbosity > chatty) {
      PrintRecvDesc(desc_out, "Re-Adding");
    }
    desc_out->timeout = shared->timeout;
    rv = PR_AddWaitFileDesc(shared->group, desc_out);
    PR_AtomicIncrement(&ops_done);
    if (ops_done > ops_required) {
      break;
    }
  } while (PR_SUCCESS == rv);
  MW_ASSERT(PR_SUCCESS == rv);
} /* SomeOpsThread */

static void SomeOpsSomeThreads(Shared* shared) {
  PRStatus rv;
  PRThread** thread;
  PRIntn index;
  PRRecvWait* desc_in;

  thread = (PRThread**)PR_CALLOC(sizeof(PRThread*) * worker_threads);

  /* Create some threads */

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: creating threads\n", shared->title);
  }
  for (index = 0; index < worker_threads; ++index) {
    thread[index] =
        PR_CreateThread(PR_USER_THREAD, SomeOpsThread, shared, PR_PRIORITY_HIGH,
                        thread_scope, PR_JOINABLE_THREAD, 16 * 1024);
  }

  /* then create some operations */
  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: creating desc\n", shared->title);
  }
  for (index = 0; index < wait_objects; ++index) {
    desc_in = CreateRecvWait(PR_NewTCPSocket(), shared->timeout);
    rv = PR_AddWaitFileDesc(shared->group, desc_in);
    MW_ASSERT(PR_SUCCESS == rv);
  }

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: sleeping\n", shared->title);
  }
  while (ops_done < ops_required) {
    PR_Sleep(shared->timeout);
  }

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: interrupting/joining threads\n", shared->title);
  }
  for (index = 0; index < worker_threads; ++index) {
    rv = PR_Interrupt(thread[index]);
    MW_ASSERT(PR_SUCCESS == rv);
    rv = PR_JoinThread(thread[index]);
    MW_ASSERT(PR_SUCCESS == rv);
  }
  PR_DELETE(thread);

  CancelGroup(shared);
} /* SomeOpsSomeThreads */

static PRStatus ServiceRequest(Shared* shared, PRRecvWait* desc) {
  PRInt32 bytes_out;

  if (verbosity > chatty)
    PR_fprintf(debug, "%s: Service received %d bytes\n", shared->title,
               desc->bytesRecv);

  if (0 == desc->bytesRecv) {
    goto quitting;
  }
  if ((-1 == desc->bytesRecv) &&
      (PR_PENDING_INTERRUPT_ERROR == PR_GetError())) {
    goto aborted;
  }

  bytes_out = PR_Send(desc->fd, desc->buffer.start, desc->bytesRecv, 0,
                      shared->timeout);
  if (verbosity > chatty)
    PR_fprintf(debug, "%s: Service sent %d bytes\n", shared->title, bytes_out);

  if ((-1 == bytes_out) && (PR_PENDING_INTERRUPT_ERROR == PR_GetError())) {
    goto aborted;
  }
  MW_ASSERT(bytes_out == desc->bytesRecv);

  return PR_SUCCESS;

aborted:
quitting:
  return PR_FAILURE;
} /* ServiceRequest */

static void PR_CALLBACK ServiceThread(void* arg) {
  PRStatus rv = PR_SUCCESS;
  PRRecvWait* desc_out = NULL;
  Shared* shared = (Shared*)arg;
  do /* until interrupted */
  {
    if (NULL != desc_out) {
      desc_out->timeout = PR_INTERVAL_NO_TIMEOUT;
      if (verbosity > chatty) {
        PrintRecvDesc(desc_out, "Service re-adding");
      }
      rv = PR_AddWaitFileDesc(shared->group, desc_out);
      MW_ASSERT(PR_SUCCESS == rv);
    }

    desc_out = PR_WaitRecvReady(shared->group);
    if (NULL == desc_out) {
      MW_ASSERT(PR_PENDING_INTERRUPT_ERROR == PR_GetError());
      break;
    }

    switch (desc_out->outcome) {
      case PR_MW_SUCCESS: {
        PR_AtomicIncrement(&ops_done);
        if (verbosity > chatty) {
          PrintRecvDesc(desc_out, "Service ready");
        }
        rv = ServiceRequest(shared, desc_out);
        break;
      }
      case PR_MW_INTERRUPT:
        MW_ASSERT(PR_PENDING_INTERRUPT_ERROR == PR_GetError());
        rv = PR_FAILURE; /* if interrupted, then exit */
        break;
      case PR_MW_TIMEOUT:
        MW_ASSERT(PR_IO_TIMEOUT_ERROR == PR_GetError());
      case PR_MW_FAILURE:
        if (verbosity > silent) {
          PL_FPrintError(debug, "RecvReady failure");
        }
        break;
      default:
        break;
    }
  } while (PR_SUCCESS == rv);

  if (NULL != desc_out) {
    DestroyRecvWait(desc_out);
  }

} /* ServiceThread */

static void PR_CALLBACK EnumerationThread(void* arg) {
  PRStatus rv;
  PRIntn count;
  PRRecvWait* desc;
  Shared* shared = (Shared*)arg;
  PRIntervalTime five_seconds = PR_SecondsToInterval(5);
  PRMWaitEnumerator* enumerator = PR_CreateMWaitEnumerator(shared->group);
  MW_ASSERT(NULL != enumerator);

  while (PR_SUCCESS == PR_Sleep(five_seconds)) {
    count = 0;
    desc = NULL;
    while (NULL != (desc = PR_EnumerateWaitGroup(enumerator, desc))) {
      if (verbosity > chatty) {
        PrintRecvDesc(desc, shared->title);
      }
      count += 1;
    }
    if (verbosity > silent)
      PR_fprintf(debug, "%s Enumerated %d objects\n", shared->title, count);
  }

  MW_ASSERT(PR_PENDING_INTERRUPT_ERROR == PR_GetError());

  rv = PR_DestroyMWaitEnumerator(enumerator);
  MW_ASSERT(PR_SUCCESS == rv);
} /* EnumerationThread */

static void PR_CALLBACK ServerThread(void* arg) {
  PRStatus rv;
  PRIntn index;
  PRRecvWait* desc_in;
  PRThread** worker_thread;
  Shared* shared = (Shared*)arg;
  PRFileDesc *listener, *service;
  PRNetAddr server_address, client_address;

  worker_thread = (PRThread**)PR_CALLOC(sizeof(PRThread*) * worker_threads);
  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: Server creating worker_threads\n", shared->title);
  }
  for (index = 0; index < worker_threads; ++index) {
    worker_thread[index] =
        PR_CreateThread(PR_USER_THREAD, ServiceThread, shared, PR_PRIORITY_HIGH,
                        thread_scope, PR_JOINABLE_THREAD, 16 * 1024);
  }

  rv = PR_InitializeNetAddr(PR_IpAddrAny, default_port, &server_address);
  MW_ASSERT(PR_SUCCESS == rv);

  listener = PR_NewTCPSocket();
  MW_ASSERT(NULL != listener);
  if (verbosity > chatty)
    PR_fprintf(debug, "%s: Server listener socket @0x%x\n", shared->title,
               listener);
  rv = PR_Bind(listener, &server_address);
  MW_ASSERT(PR_SUCCESS == rv);
  rv = PR_Listen(listener, 10);
  MW_ASSERT(PR_SUCCESS == rv);
  while (ops_done < ops_required) {
    if (verbosity > quiet) {
      PR_fprintf(debug, "%s: Server accepting connection\n", shared->title);
    }
    service = PR_Accept(listener, &client_address, PR_INTERVAL_NO_TIMEOUT);
    if (NULL == service) {
      if (PR_PENDING_INTERRUPT_ERROR == PR_GetError()) {
        break;
      }
      PL_PrintError("Accept failed");
      MW_ASSERT(PR_FALSE && "Accept failed");
    } else {
      desc_in = CreateRecvWait(service, shared->timeout);
      desc_in->timeout = PR_INTERVAL_NO_TIMEOUT;
      if (verbosity > chatty) {
        PrintRecvDesc(desc_in, "Service adding");
      }
      rv = PR_AddWaitFileDesc(shared->group, desc_in);
      MW_ASSERT(PR_SUCCESS == rv);
    }
  }

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: Server interrupting worker_threads\n",
               shared->title);
  }
  for (index = 0; index < worker_threads; ++index) {
    rv = PR_Interrupt(worker_thread[index]);
    MW_ASSERT(PR_SUCCESS == rv);
    rv = PR_JoinThread(worker_thread[index]);
    MW_ASSERT(PR_SUCCESS == rv);
  }
  PR_DELETE(worker_thread);

  PR_Close(listener);

  CancelGroup(shared);

} /* ServerThread */

static void RealOneGroupIO(Shared* shared) {
  /*
  ** Create a server that listens for connections and then services
  ** requests that come in over those connections. The server never
  ** deletes a connection and assumes a basic RPC model of operation.
  **
  ** Use worker_threads threads to service how every many open ports
  ** there might be.
  **
  ** Oh, ya. Almost forget. Create (some) clients as well.
  */
  PRStatus rv;
  PRIntn index;
  PRThread *server_thread, *enumeration_thread, **client_thread;

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: creating server_thread\n", shared->title);
  }

  server_thread =
      PR_CreateThread(PR_USER_THREAD, ServerThread, shared, PR_PRIORITY_HIGH,
                      thread_scope, PR_JOINABLE_THREAD, 16 * 1024);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: creating enumeration_thread\n", shared->title);
  }

  enumeration_thread = PR_CreateThread(PR_USER_THREAD, EnumerationThread,
                                       shared, PR_PRIORITY_HIGH, thread_scope,
                                       PR_JOINABLE_THREAD, 16 * 1024);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: snoozing before creating clients\n", shared->title);
  }
  PR_Sleep(5 * shared->timeout);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: creating client_threads\n", shared->title);
  }
  client_thread = (PRThread**)PR_CALLOC(sizeof(PRThread*) * client_threads);
  for (index = 0; index < client_threads; ++index) {
    client_thread[index] = PR_CreateThread(PR_USER_THREAD, ClientThread, shared,
                                           PR_PRIORITY_NORMAL, thread_scope,
                                           PR_JOINABLE_THREAD, 16 * 1024);
  }

  while (ops_done < ops_required) {
    PR_Sleep(shared->timeout);
  }

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: interrupting/joining client_threads\n",
               shared->title);
  }
  for (index = 0; index < client_threads; ++index) {
    rv = PR_Interrupt(client_thread[index]);
    MW_ASSERT(PR_SUCCESS == rv);
    rv = PR_JoinThread(client_thread[index]);
    MW_ASSERT(PR_SUCCESS == rv);
  }
  PR_DELETE(client_thread);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: interrupting/joining enumeration_thread\n",
               shared->title);
  }
  rv = PR_Interrupt(enumeration_thread);
  MW_ASSERT(PR_SUCCESS == rv);
  rv = PR_JoinThread(enumeration_thread);
  MW_ASSERT(PR_SUCCESS == rv);

  if (verbosity > quiet) {
    PR_fprintf(debug, "%s: interrupting/joining server_thread\n",
               shared->title);
  }
  rv = PR_Interrupt(server_thread);
  MW_ASSERT(PR_SUCCESS == rv);
  rv = PR_JoinThread(server_thread);
  MW_ASSERT(PR_SUCCESS == rv);
} /* RealOneGroupIO */

static void RunThisOne(void (*func)(Shared*), const char* name,
                       const char* test_name) {
  Shared* shared;
  if ((NULL == test_name) || (0 == PL_strcmp(name, test_name))) {
    if (verbosity > silent) {
      PR_fprintf(debug, "%s()\n", name);
    }
    shared = MakeShared(name);
    ops_done = 0;
    func(shared); /* run the test */
    MW_ASSERT(0 == desc_allocated);
    DestroyShared(shared);
  }
} /* RunThisOne */

static Verbosity ChangeVerbosity(Verbosity verbosity, PRIntn delta) {
  return (Verbosity)(((PRIntn)verbosity) + delta);
} /* ChangeVerbosity */

int main(int argc, char** argv) {
  PLOptStatus os;
  const char* test_name = NULL;
  PLOptState* opt = PL_CreateOptState(argc, argv, "dqGc:o:p:t:w:");

  while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
    if (PL_OPT_BAD == os) {
      continue;
    }
    switch (opt->option) {
      case 0:
        test_name = opt->value;
        break;
      case 'd': /* debug mode */
        if (verbosity < noisy) {
          verbosity = ChangeVerbosity(verbosity, 1);
        }
        break;
      case 'q': /* debug mode */
        if (verbosity > silent) {
          verbosity = ChangeVerbosity(verbosity, -1);
        }
        break;
      case 'G': /* use global threads */
        thread_scope = PR_GLOBAL_THREAD;
        break;
      case 'c': /* number of client threads */
        client_threads = atoi(opt->value);
        break;
      case 'o': /* operations to compelete */
        ops_required = atoi(opt->value);
        break;
      case 'p': /* default port */
        default_port = atoi(opt->value);
        break;
      case 't': /* number of threads waiting */
        worker_threads = atoi(opt->value);
        break;
      case 'w': /* number of wait objects */
        wait_objects = atoi(opt->value);
        break;
      default:
        break;
    }
  }
  PL_DestroyOptState(opt);

  if (verbosity > 0) {
    debug = PR_GetSpecialFD(PR_StandardError);
  }

  RunThisOne(OneInThenCancelled, "OneInThenCancelled", test_name);
  RunThisOne(OneOpOneThread, "OneOpOneThread", test_name);
  RunThisOne(ManyOpOneThread, "ManyOpOneThread", test_name);
  RunThisOne(SomeOpsSomeThreads, "SomeOpsSomeThreads", test_name);
  RunThisOne(RealOneGroupIO, "RealOneGroupIO", test_name);
  return 0;
} /* main */

/* multwait.c */