f0d3a4de75
The #if guard is probably not 100% equivalent to the previous PIPE_OS check, but if anything it should be an over-approximation (are there pthread implementations without barriers?), so people will get either a good implementation or compile errors that are easy to fix. Reviewed-by: Marek Olšák <marek.olsak@amd.com>
131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/**************************************************************************
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*
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* Copyright 2009-2010 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Test case for util_barrier.
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*
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* The test succeeds if no thread exits before all the other threads reach
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* the barrier.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "os/os_time.h"
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#include "util/u_atomic.h"
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#include "util/u_thread.h"
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#define NUM_THREADS 10
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static int verbosity = 0;
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static thrd_t threads[NUM_THREADS];
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static util_barrier barrier;
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static int thread_ids[NUM_THREADS];
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static volatile int waiting = 0;
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static volatile int proceeded = 0;
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#define LOG(fmt, ...) \
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if (verbosity > 0) { \
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fprintf(stdout, fmt, ##__VA_ARGS__); \
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}
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#define CHECK(_cond) \
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if (!(_cond)) { \
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fprintf(stderr, "%s:%u: `%s` failed\n", __FILE__, __LINE__, #_cond); \
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_exit(EXIT_FAILURE); \
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}
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static int
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thread_function(void *thread_data)
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{
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int thread_id = *((int *) thread_data);
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LOG("thread %d starting\n", thread_id);
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os_time_sleep(thread_id * 100 * 1000);
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LOG("thread %d before barrier\n", thread_id);
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CHECK(p_atomic_read(&proceeded) == 0);
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p_atomic_inc(&waiting);
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util_barrier_wait(&barrier);
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CHECK(p_atomic_read(&waiting) == NUM_THREADS);
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p_atomic_inc(&proceeded);
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LOG("thread %d exiting\n", thread_id);
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int i;
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for (i = 1; i < argc; ++i) {
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const char *arg = argv[i];
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if (strcmp(arg, "-v") == 0) {
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++verbosity;
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} else {
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fprintf(stderr, "error: unrecognized option `%s`\n", arg);
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exit(EXIT_FAILURE);
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}
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}
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// Disable buffering
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setbuf(stdout, NULL);
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LOG("pipe_barrier_test starting\n");
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util_barrier_init(&barrier, NUM_THREADS);
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for (i = 0; i < NUM_THREADS; i++) {
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thread_ids[i] = i;
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threads[i] = u_thread_create(thread_function, (void *) &thread_ids[i]);
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}
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for (i = 0; i < NUM_THREADS; i++ ) {
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thrd_join(threads[i], NULL);
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}
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CHECK(p_atomic_read(&proceeded) == NUM_THREADS);
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util_barrier_destroy(&barrier);
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LOG("pipe_barrier_test exiting\n");
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return 0;
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}
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