174 lines
4.1 KiB
C++
174 lines
4.1 KiB
C++
// tls_test.cc -- test TLS variables for gold, main function
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// Copyright 2006, 2007, 2008, 2011 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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// This is the main function for the TLS test. See tls_test.cc for
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// more information.
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#include <cassert>
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#include <cstdio>
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#include <pthread.h>
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#include <semaphore.h>
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#include "tls_test.h"
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// We make these macros so the assert() will give useful line-numbers.
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#define safe_lock(semptr) \
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do \
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{ \
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int err = sem_wait(semptr); \
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assert(err == 0); \
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} \
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while (0)
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#define safe_unlock(semptr) \
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do \
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{ \
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int err = sem_post(semptr); \
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assert(err == 0); \
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} \
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while (0)
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struct Sem_set
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{
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sem_t sem1;
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sem_t sem2;
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sem_t sem3;
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};
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Sem_set sems1;
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Sem_set sems2;
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bool failed = false;
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void
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check(const char* name, bool val)
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{
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if (!val)
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{
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fprintf(stderr, "Test %s failed\n", name);
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failed = true;
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}
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}
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// The body of the thread function. This acquires the first
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// semaphore, runs the tests, and then releases the second semaphore.
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// Then it acquires the third semaphore, and the runs the verification
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// test again.
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void*
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thread_routine(void* arg)
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{
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Sem_set* pms = static_cast<Sem_set*>(arg);
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// Acquire the first semaphore.
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if (pms)
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safe_lock(&pms->sem1);
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// Run the tests.
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check("t1", t1());
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check("t2", t2());
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check("t3", t3());
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check("t4", t4());
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f5b(f5a());
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check("t5", t5());
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f6b(f6a());
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check("t6", t6());
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check("t8", t8());
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check("t9", t9());
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f10b(f10a());
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check("t10", t10());
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check("t11", t11() != 0);
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check("t12", t12());
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check("t_last", t_last());
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// Release the second semaphore.
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if (pms)
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safe_unlock(&pms->sem2);
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// Acquire the third semaphore.
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if (pms)
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safe_lock(&pms->sem3);
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check("t_last", t_last());
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return 0;
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}
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// The main function.
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int
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main()
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{
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// First, as a sanity check, run through the tests in the "main" thread.
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thread_routine(0);
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// Set up the semaphores. We want the first thread to start right
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// away, tell us when it is done with the first part, and wait for
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// us to release it. We want the second thread to wait to start,
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// tell us when it is done with the first part, and wait for us to
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// release it.
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sem_init(&sems1.sem1, 0, 1);
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sem_init(&sems1.sem2, 0, 0);
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sem_init(&sems1.sem3, 0, 0);
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sem_init(&sems2.sem1, 0, 0);
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sem_init(&sems2.sem2, 0, 0);
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sem_init(&sems2.sem3, 0, 0);
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pthread_t thread1;
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int err = pthread_create(&thread1, NULL, thread_routine, &sems1);
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assert(err == 0);
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pthread_t thread2;
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err = pthread_create(&thread2, NULL, thread_routine, &sems2);
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assert(err == 0);
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// Wait for the first thread to complete the first part.
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safe_lock(&sems1.sem2);
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// Tell the second thread to start.
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safe_unlock(&sems2.sem1);
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// Wait for the second thread to complete the first part.
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safe_lock(&sems2.sem2);
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// Tell the first thread to continue and finish.
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safe_unlock(&sems1.sem3);
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// Wait for the first thread to finish.
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void* thread_val;
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err = pthread_join(thread1, &thread_val);
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assert(err == 0);
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assert(thread_val == 0);
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// Tell the second thread to continue and finish.
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safe_unlock(&sems2.sem3);
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// Wait for the second thread to finish.
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err = pthread_join(thread2, &thread_val);
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assert(err == 0);
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assert(thread_val == 0);
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// All done.
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return failed ? 1 : 0;
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}
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