lib/igt_thread.c

   1 /*
   2  * Copyright © 2020 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <pthread.h>
  25 #include <stdlib.h>
  26 #include <stdatomic.h>
  27
  28 #include "igt_core.h"
  29 #include "igt_thread.h"
  30
  31 static pthread_key_t __igt_is_main_thread;
  32
  33 static _Atomic(bool) __thread_failed = false;
  34
  35 void igt_thread_clear_fail_state(void)
  36 {
  37         assert(igt_thread_is_main());
  38
  39         __thread_failed = false;
  40 }
  41
  42 void igt_thread_fail(void)
  43 {
  44         assert(!igt_thread_is_main());
  45
  46         __thread_failed = true;
  47 }
  48
  49 void igt_thread_assert_no_failures(void)
  50 {
  51         assert(igt_thread_is_main());
  52
  53         if (__thread_failed) {
  54                 /* so we won't get stuck in a loop */
  55                 igt_thread_clear_fail_state();
  56                 igt_critical("Failure in a thread!\n");
  57                 igt_fail(IGT_EXIT_FAILURE);
  58         }
  59 }
  60
  61 bool igt_thread_is_main(void)
  62 {
  63         return pthread_getspecific(__igt_is_main_thread) != NULL;
  64 }
  65
  66 igt_constructor {
  67         pthread_key_create(&__igt_is_main_thread, NULL);
  68         pthread_setspecific(__igt_is_main_thread, (void*) 0x1);
  69 }