Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : /* Test of gpr thread support. */
      35             : 
      36             : #include <stdio.h>
      37             : #include <stdlib.h>
      38             : #include <grpc/support/log.h>
      39             : #include <grpc/support/sync.h>
      40             : #include <grpc/support/thd.h>
      41             : #include <grpc/support/time.h>
      42             : #include "test/core/util/test_config.h"
      43             : 
      44             : struct test {
      45             :   gpr_mu mu;
      46             :   int n;
      47             :   int is_done;
      48             :   gpr_cv done_cv;
      49             : };
      50             : 
      51             : /* A Thread body.   Decrement t->n, and if is becomes zero, set t->done. */
      52        1000 : static void thd_body(void *v) {
      53        1000 :   struct test *t = v;
      54        1000 :   gpr_mu_lock(&t->mu);
      55        1000 :   t->n--;
      56        1000 :   if (t->n == 0) {
      57           1 :     t->is_done = 1;
      58           1 :     gpr_cv_signal(&t->done_cv);
      59             :   }
      60        1000 :   gpr_mu_unlock(&t->mu);
      61        1000 : }
      62             : 
      63        1000 : static void thd_body_joinable(void *v) {}
      64             : 
      65             : /* Test that we can create a number of threads and wait for them. */
      66           1 : static void test(void) {
      67             :   int i;
      68             :   gpr_thd_id thd;
      69             :   gpr_thd_id thds[1000];
      70             :   struct test t;
      71           1 :   int n = 1000;
      72           1 :   gpr_thd_options options = gpr_thd_options_default();
      73           1 :   gpr_mu_init(&t.mu);
      74           1 :   gpr_cv_init(&t.done_cv);
      75           1 :   t.n = n;
      76           1 :   t.is_done = 0;
      77        1001 :   for (i = 0; i != n; i++) {
      78        1000 :     GPR_ASSERT(gpr_thd_new(&thd, &thd_body, &t, NULL));
      79             :   }
      80           1 :   gpr_mu_lock(&t.mu);
      81           3 :   while (!t.is_done) {
      82           1 :     gpr_cv_wait(&t.done_cv, &t.mu, gpr_inf_future(GPR_CLOCK_REALTIME));
      83             :   }
      84           1 :   gpr_mu_unlock(&t.mu);
      85           1 :   GPR_ASSERT(t.n == 0);
      86           1 :   gpr_thd_options_set_joinable(&options);
      87        1001 :   for (i = 0; i < n; i++) {
      88        1000 :     GPR_ASSERT(gpr_thd_new(&thds[i], &thd_body_joinable, NULL, &options));
      89             :   }
      90        1001 :   for (i = 0; i < n; i++) {
      91        1000 :     gpr_thd_join(thds[i]);
      92             :   }
      93           1 : }
      94             : 
      95             : /* ------------------------------------------------- */
      96             : 
      97           1 : int main(int argc, char *argv[]) {
      98           1 :   grpc_test_init(argc, argv);
      99           1 :   test();
     100           1 :   return 0;
     101             : }