WheeledThreadPool::_init::_init(){
//make a conservative estimate of when blocking will
//be faster than spinning
BasicTimer bt;
MPSCQueue<int> tq;
tq.enqueue(0);
int x;
bt.start();
tq.blockingDequeue(x);
bt.stop();
maxWait = bt.getElapsedDuration()*2;
}
TEST_F(SignalTest, DeferredSynchronousSignal) {
cout << "Instantiating signal object" << endl;
Signal<int, int> testSignal;
BasicTimer bt;
cout << "Connecting signal" << endl;
bt.start();
testSignal.connectSlot(ExecutorScheme::DEFERRED_SYNCHRONOUS, staticSumFunction);
bt.stop();
cout << "Time to connect: " << bt.getElapsedMilliseconds() << "ms" << endl;
cout << "Emitting signal" << endl;
bt.start();
testSignal(1, 2);
bt.stop();
cout << "Time to emit: " << bt.getElapsedMilliseconds() << "ms" << endl;
ASSERT_NE(globalStaticIntX, 3);
testSignal.invokeDeferred();
ASSERT_EQ(globalStaticIntX, 3);
testSignal.disconnectSlot(0);
}
TEST_F(SignalTest, MultiEmit){
cout << "Instantiating signal object" << endl;
Signal<int, int> testSignal;
BasicTimer bt;
BasicTimer bt2;
cout << "Connecting signal" << endl;
bt.start();
int id = testSignal.connectSlot(ExecutorScheme::STRAND, staticSumFunction);
bt.stop();
cout << "Time to connect: " << bt.getElapsedMilliseconds() << "ms" << endl;
cout << "Emitting signal" << endl;
bt.start();
list<thread> threads;
const uint32_t nThreads = 64;
std::atomic<uint32_t> threadsRemaining{nThreads};
for (uint32_t i=0; i<nThreads; i++){
threads.emplace_back([&, i](){
for (uint32_t i=0; i<1000000; ++i){
testSignal.emitSignal(1, 2);
}
uint32_t tr = threadsRemaining.fetch_sub(1);
cout << "Threads remaining: " << tr-1 << endl;
cout << "globalStaticInt: " << globalStaticIntX << endl;
});
}
bt.stop();
bt2.start();
while (bt2.getElapsedSeconds() < 60.0) {
if (globalStaticIntX == 1000000*3*nThreads) {
bt2.stop();
break;
}
std::this_thread::sleep_for(std::chrono::milliseconds(100));
}
//ASSERT_LT(bt2.getElapsedSeconds(), 0.1);
cout << "Time to emit: " << bt.getElapsedMilliseconds() << "ms" << endl;
cout << "Time to emit and process: " << bt2.getElapsedMilliseconds() << "ms" << endl;
cout << "Net time to process: " << bt2.getElapsedMilliseconds() - bt.getElapsedMilliseconds() << "ms" << endl;
ASSERT_EQ(0, id);
testSignal.disconnectAllSlots();
for (auto &t : threads) t.join();
}
TEST_F(SignalTest, StrandSignal) {
cout << "Instantiating signal object" << endl;
Signal<int, int> testSignal;
BasicTimer bt;
BasicTimer bt2;
cout << "Connecting signal" << endl;
bt.start();
int id = testSignal.connectSlot(ExecutorScheme::STRAND, staticSumFunction);
bt.stop();
cout << "Time to connect: " << bt.getElapsedMilliseconds() << "ms" << endl;
cout << "Emitting signal" << endl;
bt.start();
bt2.start();
testSignal.emitSignal(1, 2);
bt.stop();
while (bt2.getElapsedSeconds() < 0.1) {
if (globalStaticIntX == 3) {
bt2.stop();
break;
}
}
ASSERT_LT(bt2.getElapsedSeconds(), 0.1);
ASSERT_EQ(globalStaticIntX, 3);
cout << "Time to emit: " << bt.getElapsedMilliseconds() << "ms" << endl;
cout << "Time to emit and process: " << bt2.getElapsedMilliseconds() << "ms" << endl;
cout << "Net time to process: " << bt2.getElapsedMilliseconds() - bt.getElapsedMilliseconds() << "ms" << endl;
ASSERT_EQ(0, id);
testSignal.disconnectAllSlots();
}
TEST_F(SignalTest, MultipleConnectionTypes) {
cout << "Testing multiple connection types for single signal" << endl;
Signal<BigThing> testSignal;
cout << "Connecting signals" << endl;
list<int> ids;
ids.push_back(testSignal.connectSlot(ExecutorScheme::SYNCHRONOUS, pushToQueue));
ids.push_back(testSignal.connectSlot(ExecutorScheme::ASYNCHRONOUS, pushToQueue));
ids.push_back(testSignal.connectSlot(ExecutorScheme::STRAND, pushToQueue));
cout << "Emitting signal" << endl;
BasicTimer bt;
BasicTimer bt2;
bt.start();
bt2.start();
BigThing bigthing;
for (uint32_t i = 0; i < 10; i++) {
testSignal.emitSignal(bigthing);
}
bt2.stop();
cout << "Dequeueing" << endl;
for (int i = 0; i < 30; i++) {
sq.dequeue();
}
bt.stop();
cout << "Signals emitted" << endl;
cout << "Total time for emission: " << bt2.getElapsedMilliseconds() << "ms" << endl;
cout << "Total time for emission and processing: " << bt.getElapsedMilliseconds() << "ms" << endl;
cout << "Average emission+processing time: " << bt.getElapsedMilliseconds() / 10.0 << "ms" << endl;
ASSERT_LT(bt2.getElapsedSeconds(), 0.1);
ASSERT_LT(bt.getElapsedSeconds(), 0.2);
}
