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//
// SerialTaskQueue_test.cpp
// DispatchProcessingDemo
//
// Created by Chris Jones on 9/27/11.
//
#include <iostream>
#include <cppunit/extensions/HelperMacros.h>
#include <chrono>
#include <memory>
#include <atomic>
#include "oneapi/tbb/task_arena.h"
#include "FWCore/Concurrency/interface/WaitingTask.h"
#include "FWCore/Concurrency/interface/SerialTaskQueue.h"
#include "FWCore/Concurrency/interface/FunctorTask.h"
class SerialTaskQueue_test : public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(SerialTaskQueue_test);
CPPUNIT_TEST(testPush);
CPPUNIT_TEST(testPause);
CPPUNIT_TEST(stressTest);
CPPUNIT_TEST_SUITE_END();
public:
void testPush();
void testPause();
void stressTest();
void setUp() {}
void tearDown() {}
};
CPPUNIT_TEST_SUITE_REGISTRATION(SerialTaskQueue_test);
using namespace std::chrono_literals;
void SerialTaskQueue_test::testPush() {
std::atomic<unsigned int> count{0};
edm::SerialTaskQueue queue;
{
std::atomic<unsigned int> waitingTasks{3};
oneapi::tbb::task_group group;
queue.push(group, [&count, &waitingTasks] {
CPPUNIT_ASSERT(count++ == 0);
std::this_thread::sleep_for(10us);
--waitingTasks;
});
queue.push(group, [&count, &waitingTasks] {
CPPUNIT_ASSERT(count++ == 1);
std::this_thread::sleep_for(10us);
--waitingTasks;
});
queue.push(group, [&count, &waitingTasks] {
CPPUNIT_ASSERT(count++ == 2);
std::this_thread::sleep_for(10us);
--waitingTasks;
});
do {
group.wait();
} while (0 != waitingTasks.load());
CPPUNIT_ASSERT(count == 3);
}
}
void SerialTaskQueue_test::testPause() {
std::atomic<unsigned int> count{0};
edm::SerialTaskQueue queue;
{
queue.pause();
{
std::atomic<unsigned int> waitingTasks{1};
oneapi::tbb::task_group group;
queue.push(group, [&count, &waitingTasks] {
CPPUNIT_ASSERT(count++ == 0);
--waitingTasks;
});
std::this_thread::sleep_for(1000us);
CPPUNIT_ASSERT(0 == count);
queue.resume();
do {
group.wait();
} while (0 != waitingTasks.load());
CPPUNIT_ASSERT(count == 1);
}
{
std::atomic<unsigned int> waitingTasks{3};
oneapi::tbb::task_group group;
queue.push(group, [&count, &queue, &waitingTasks] {
queue.pause();
CPPUNIT_ASSERT(count++ == 1);
--waitingTasks;
});
queue.push(group, [&count, &waitingTasks] {
CPPUNIT_ASSERT(count++ == 2);
--waitingTasks;
});
queue.push(group, [&count, &waitingTasks] {
CPPUNIT_ASSERT(count++ == 3);
--waitingTasks;
});
std::this_thread::sleep_for(100us);
//can't do == since the queue may not have processed the first task yet
CPPUNIT_ASSERT(2 >= count);
queue.resume();
do {
group.wait();
} while (0 != waitingTasks.load());
CPPUNIT_ASSERT(count == 4);
}
}
}
void SerialTaskQueue_test::stressTest() {
//note group needs to live longer than queue
oneapi::tbb::task_group group;
edm::SerialTaskQueue queue;
unsigned int index = 100;
const unsigned int nTasks = 1000;
while (0 != --index) {
std::atomic<unsigned int> waitingTasks{2};
std::atomic<unsigned int> count{0};
std::atomic<bool> waitToStart{true};
{
group.run([&queue, &waitToStart, &waitingTasks, &count, &group] {
while (waitToStart.load()) {
}
for (unsigned int i = 0; i < nTasks; ++i) {
++waitingTasks;
queue.push(group, [&count, &waitingTasks] {
++count;
--waitingTasks;
});
}
--waitingTasks;
});
group.run([&queue, &waitToStart, &waitingTasks, &count, &group] {
waitToStart = false;
for (unsigned int i = 0; i < nTasks; ++i) {
++waitingTasks;
queue.push(group, [&count, &waitingTasks] {
++count;
--waitingTasks;
});
}
--waitingTasks;
});
}
do {
group.wait();
} while (0 != waitingTasks.load());
CPPUNIT_ASSERT(2 * nTasks == count);
}
}
#include <Utilities/Testing/interface/CppUnit_testdriver.icpp>
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