The Tor Browser: nsprpub/pr/tests/ioconthr.c@4ab42b5ab56c

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

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /*

     7  * This is a test for the io continuation thread machinery

     8  * in pthreads.

     9  */

    11 #include "nspr.h"

    12 #include <stdio.h>

    14 int num_threads = 10;  /* must be an even number */

    15 PRThreadScope thread_scope = PR_GLOBAL_THREAD;

    17 void ThreadFunc(void *arg)

    18 {

    19     PRFileDesc *fd = (PRFileDesc *) arg;

    20     char buf[1024];

    21     PRInt32 nbytes;

    22     PRErrorCode err;

    24     nbytes = PR_Recv(fd, buf, sizeof(buf), 0, PR_SecondsToInterval(20));

    25     if (nbytes == -1) {

    26         err = PR_GetError();

    27         if (err != PR_PENDING_INTERRUPT_ERROR) {

    28             fprintf(stderr, "PR_Recv failed: (%d, %d)\n",

    29                     err, PR_GetOSError());

    30             PR_ProcessExit(1);

    31         }

    32         /*

    33          * After getting an I/O interrupt, this thread must

    34          * close the fd before it exits due to a limitation

    35          * of our NT implementation.

    36          */

    37         if (PR_Close(fd) == PR_FAILURE) {

    38             fprintf(stderr, "PR_Close failed\n");

    39             PR_ProcessExit(1);

    40         }

    41     } else {

    42         fprintf(stderr, "PR_Recv received %d bytes!?\n", nbytes);

    43         PR_ProcessExit(1);

    44     }

    45 }

    47 int main(int argc, char **argv)

    48 {

    49     PRFileDesc **fds;

    50     PRThread **threads;

    51     PRIntervalTime start, elapsed;

    52     int index;

    54     fds = (PRFileDesc **) PR_MALLOC(2 * num_threads * sizeof(PRFileDesc *));

    55     PR_ASSERT(fds != NULL);

    56     threads = (PRThread **) PR_MALLOC(num_threads * sizeof(PRThread *));

    57     PR_ASSERT(threads != NULL);

    59     for (index = 0; index < num_threads; index++) {

    60         if (PR_NewTCPSocketPair(&fds[2 * index]) == PR_FAILURE) {

    61             fprintf(stderr, "PR_NewTCPSocket failed\n");

    62             PR_ProcessExit(1);

    63         }

    64         threads[index] = PR_CreateThread(

    65                 PR_USER_THREAD, ThreadFunc, fds[2 * index],

    66                 PR_PRIORITY_NORMAL, thread_scope, PR_JOINABLE_THREAD, 0);

    67         if (NULL == threads[index]) {

    68             fprintf(stderr, "PR_CreateThread failed\n");

    69             PR_ProcessExit(1);

    70         }

    71     }

    73     /* Let the threads block in PR_Recv */

    74     PR_Sleep(PR_SecondsToInterval(2));

    76     printf("Interrupting the threads\n");

    77     fflush(stdout);

    78     start = PR_IntervalNow();

    79     for (index = 0; index < num_threads; index++) {

    80         if (PR_Interrupt(threads[index]) == PR_FAILURE) {

    81             fprintf(stderr, "PR_Interrupt failed\n");

    82             PR_ProcessExit(1);

    83         }

    84     }

    85     for (index = 0; index < num_threads; index++) {

    86         if (PR_JoinThread(threads[index]) == PR_FAILURE) {

    87             fprintf(stderr, "PR_JoinThread failed\n");

    88             PR_ProcessExit(1);

    89         }

    90     }

    91     elapsed = (PRIntervalTime)(PR_IntervalNow() - start);

    92     printf("Threads terminated in %d milliseconds\n",

    93             PR_IntervalToMilliseconds(elapsed));

    94     fflush(stdout);

    96     /* We are being very generous and allow 10 seconds. */

    97     if (elapsed >= PR_SecondsToInterval(10)) {

    98         fprintf(stderr, "Interrupting threads took longer than 10 seconds!!\n");

    99         PR_ProcessExit(1);

   100     }

   102     for (index = 0; index < num_threads; index++) {

   103         /* fds[2 * index] was passed to and closed by threads[index]. */

   104         if (PR_Close(fds[2 * index + 1]) == PR_FAILURE) {

   105             fprintf(stderr, "PR_Close failed\n");

   106             PR_ProcessExit(1);

   107         }

   108     }

   109     PR_DELETE(threads);

   110     PR_DELETE(fds);

   111     printf("PASS\n");

   112     PR_Cleanup();

   113     return 0;

   114 }

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