8008ce25e9
This patch adds some pthread and C++11 std::thread unit tests. Change-Id: I9706b542e5fa927a87c6e8ae2a6330fab7bb5d72 Reviewed-on: https://gem5-review.googlesource.com/8221 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Brandon Potter <Brandon.Potter@amd.com>
117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/*
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* Copyright (c) 2018, Cornell University
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* All rights reserved.
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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 copyright
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* notice, this list of conditions and the following 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 provided
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* with the distribution.
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*
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* Neither the name of Cornell University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Tuan Ta
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*/
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#include <pthread.h>
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#include <cstdlib>
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#include <iostream>
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//------------------------------------------------------------------------
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// Create n threads and run them one after another
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// Each child thread writes its thread id to an output array
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//------------------------------------------------------------------------
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#define MAX_N_WORKER_THREADS 10
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typedef struct
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{
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int tid;
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int* output;
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} ThreadArg;
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void* func( void* args )
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{
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ThreadArg* my_args = ( ThreadArg* ) args;
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// write tid to this thread's output
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(*my_args->output) = my_args->tid;
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return nullptr;
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}
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int main( int argc, const char* argv[] )
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{
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int n_worker_threads = 0;
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// allocate all threads
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pthread_t* threads = new pthread_t[MAX_N_WORKER_THREADS];
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ThreadArg* t_args = new ThreadArg[MAX_N_WORKER_THREADS];
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// create an output array for all threads
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int* outputs = new int[MAX_N_WORKER_THREADS];
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int ret;
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// try to spawn as many worker threads as possible
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for ( int tid = 0; tid < MAX_N_WORKER_THREADS; ++tid ) {
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// set up thread args
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t_args[tid].tid = tid;
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t_args[tid].output = outputs + tid;
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// spawn thread
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ret = pthread_create( threads + tid, nullptr, func, &t_args[tid] );
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if (ret != 0 ) {
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break;
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}
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n_worker_threads++;
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// wait for the thread to join before moving on
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pthread_join( threads[tid], nullptr );
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}
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// verify
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bool passed = true;
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for ( int i = 0; i < n_worker_threads; ++i ) {
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if ( outputs[i] != i ) {
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passed = false;
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break;
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}
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}
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// clean up
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delete[] threads;
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delete[] t_args;
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delete[] outputs;
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// failed if outputs are not correct or no worker thread was spawned
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if (!passed || n_worker_threads < 1)
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return EXIT_FAILURE;
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return EXIT_SUCCESS;
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}
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