Brandon Potter
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/*
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* Copyright (c) 2017 Intel Corporation. All rights reserved.
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* This software is available to you under the BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/* Thread wait test: Test whether a store performed by one thead will wake up a
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* second thread from a call to roc_shmem_wait. */
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#include <pthread.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <roc_shmem/roc_shmem.hpp>
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using namespace rocshmem;
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static long *shr_var;
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static void *src_thread_fn(void *arg) {
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/* Try to get the dst thread to enter wait before the call to sleep */
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sleep(1);
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/* This should wake up the waiting dst thread */
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*shr_var = 1;
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/* Quiet should provide a store fence */
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roc_shmem_quiet();
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return NULL;
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}
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static void *dst_thread_fn(void *arg) {
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roc_shmem_long_wait_until(shr_var, ROC_SHMEM_CMP_NE, 0);
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printf("shr_var is now %ld\n", *shr_var);
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return NULL;
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}
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int main(int argc, char *argv[]) {
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int tl, ret;
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pthread_t src_thread, dst_thread;
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roc_shmem_init_thread(ROC_SHMEM_THREAD_MULTIPLE, &tl);
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if (tl != ROC_SHMEM_THREAD_MULTIPLE) {
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printf("Init failed (requested thread level %d, got %d)\n",
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ROC_SHMEM_THREAD_MULTIPLE, tl);
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roc_shmem_global_exit(1);
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}
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shr_var = (long *)roc_shmem_malloc(sizeof(long));
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*shr_var = 0;
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pthread_create(&dst_thread, NULL, &dst_thread_fn, NULL);
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pthread_create(&src_thread, NULL, &src_thread_fn, NULL);
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pthread_join(dst_thread, NULL);
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pthread_join(src_thread, NULL);
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roc_shmem_free(shr_var);
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roc_shmem_finalize();
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return 0;
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}
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