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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "tests.h"
#include "job.h"
#include "thread_test_base.hpp"
#define MUTEX_TEST_THREADS 6
#define MAX_THREADS 7
class Thread_Mutex_Test : public ThreadTestBase
{
int Main () override;
void MutexTest (bool usingMutex)
{
if(usingMutex)
TestHeader("Mutex Test");
else
TestHeader("Not Using Mutex Test");
FastOS_ThreadPool *pool = new FastOS_ThreadPool(128*1024, MAX_THREADS);
if(Progress(pool != nullptr, "Allocating ThreadPool"))
{
int i;
Job jobs[MUTEX_TEST_THREADS];
std::mutex *myMutex=nullptr;
if(usingMutex) {
myMutex = new std::mutex;
}
for(i=0; i<MUTEX_TEST_THREADS; i++)
{
jobs[i].code = INCREASE_NUMBER;
jobs[i].mutex = myMutex;
}
number = 0;
for(i=0; i<MUTEX_TEST_THREADS; i++)
{
bool rc = (nullptr != pool->NewThread(this,
static_cast<void *>(&jobs[i])));
Progress(rc, "Creating Thread with%s mutex", (usingMutex ? "" : "out"));
};
WaitForThreadsToFinish(jobs, MUTEX_TEST_THREADS);
for(i=0; i<MUTEX_TEST_THREADS; i++)
{
Progress(true, "Thread returned with resultcode %d", jobs[i].result);
}
bool wasOk=true;
int concurrentHits=0;
for(i=0; i<MUTEX_TEST_THREADS; i++)
{
int result = jobs[i].result;
if(usingMutex)
{
if((result % INCREASE_NUMBER_AMOUNT) != 0)
{
wasOk = false;
Progress(false, "Mutex locking did not work (%d).", result);
break;
}
}
else
{
if((result != 0) &&
(result != INCREASE_NUMBER_AMOUNT*MUTEX_TEST_THREADS) &&
(result % INCREASE_NUMBER_AMOUNT) == 0)
{
if((++concurrentHits) == 2)
{
wasOk = false;
Progress(false, "Very unlikely that threads are running "
"concurrently (%d)", jobs[i].result);
break;
}
}
}
}
if(wasOk)
{
if(usingMutex)
{
Progress(true, "Using the mutex, the returned numbers were alligned.");
}
else
{
Progress(true, "Returned numbers were not alligned. "
"This was the expected result.");
}
}
if(myMutex != nullptr)
delete(myMutex);
Progress(true, "Closing threadpool...");
pool->Close();
Progress(true, "Deleting threadpool...");
delete(pool);
}
PrintSeparator();
}
void TryLockTest ()
{
TestHeader("Mutex TryLock Test");
FastOS_ThreadPool pool(128*1024);
Job job;
std::mutex mtx;
job.code = HOLD_MUTEX_FOR2SEC;
job.result = -1;
job.mutex = &mtx;
job.ownThread = pool.NewThread(this,
static_cast<void *>(&job));
Progress(job.ownThread !=nullptr, "Creating thread");
if(job.ownThread != nullptr)
{
bool lockrc;
FastOS_Thread::Sleep(1000);
for(int i=0; i<5; i++)
{
lockrc = mtx.try_lock();
Progress(!lockrc, "We should not get the mutex lock just yet (%s)",
lockrc ? "got it" : "didn't get it");
if(lockrc) {
mtx.unlock();
break;
}
}
FastOS_Thread::Sleep(2000);
lockrc = mtx.try_lock();
Progress(lockrc, "We should get the mutex lock now (%s)",
lockrc ? "got it" : "didn't get it");
if(lockrc)
mtx.unlock();
Progress(true, "Attempting to do normal lock...");
mtx.lock();
Progress(true, "Got lock. Attempt to do normal unlock...");
mtx.unlock();
Progress(true, "Unlock OK.");
}
Progress(true, "Waiting for threads to finish using pool.Close()...");
pool.Close();
Progress(true, "Pool closed.");
PrintSeparator();
}
};
int Thread_Mutex_Test::Main ()
{
printf("grep for the string '%s' to detect failures.\n\n", failString);
time_t before = time(0);
MutexTest(true);
{ time_t now = time(0); printf("[%ld seconds]\n", now-before); before = now; }
MutexTest(false);
{ time_t now = time(0); printf("[%ld seconds]\n", now-before); before = now; }
TryLockTest();
{ time_t now = time(0); printf("[%ld seconds]\n", now-before); before = now; }
printf("END OF TEST (%s)\n", _argv[0]);
return allWasOk() ? 0 : 1;
}
int main (int argc, char **argv)
{
Thread_Mutex_Test app;
setvbuf(stdout, nullptr, _IOLBF, 8192);
return app.Entry(argc, argv);
}
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