TEST_F(ContextMapTest, VerifyWithThreadsPathological) {
ContextMap<size_t> mp;
// Context collection and exit race threads:
vector<std::shared_ptr<CoreContext>> contexts;
// Exit race controller:
AutoRequired<ExitRaceSignal> signal;
// Create a number of dependent contexts:
for(size_t i = 0; i < 100; i++) {
AutoCreateContext context;
contexts.push_back(context);
// Store a shared pointer
mp.Add(i, context);
// Start the context
context->Initiate();
}
// Set the signal:
signal->Signal();
// Verify that the map empties once our zero-count is hit:
for(size_t i = 0; i < contexts.size(); i++) {
contexts[i]->SignalShutdown(true);
}
// Clear the context collection:
contexts.clear();
EXPECT_EQ(0UL, mp.size()) << "Context map did not empty as expected";
}
TEST_F(ContextCreatorTest, ValidateMultipleEviction) {
AutoCurrentContext()->Initiate();
// Number of dependent contexts to be created
const size_t count = 100;
// Teardown lock, counter, and condition:
std::mutex lock;
std::condition_variable cond;
int counter = count;
// Obtain creator pointer:
AutoRequired<Creator> creator;
// Set up a signal manager at global context scope:
AutoRequired<GlobalSignal> signal;
{
// Array of objects to test destruction on, and corresponding collection of contexts:
std::shared_ptr<WaitMember> members[count];
// Create a few contexts:
for(int i = count; i--;) {
AutoCreateContext ctxt;
CurrentContextPusher pshr(ctxt);
// Trivial validation that the newly created context is an empty context:
ASSERT_EQ(static_cast<size_t>(0), ctxt->GetMemberCount()) << "A created context was not empty";
// Add in an object to test asynchronous destruction:
AutoRequired<WaitMember> obj;
members[i] = obj;
ASSERT_EQ(signal.get(), obj->m_signal.get()) << "Dependent context wiring did not correctly match to the enclosing scope";
// Add a notifier to signal a continue condition when we have everything we need:
ctxt->AddTeardownListener([&lock, &cond, &counter] {
(std::lock_guard<std::mutex>)lock,
counter--,
cond.notify_all();
});
// Kick off the context:
ctxt->Initiate();
}
// Signal all members and then release everything:
signal->Signal();
}
// Wait for all contexts to be destroyed
std::unique_lock<std::mutex> lk(lock);
bool wait_status = cond.wait_for(lk, std::chrono::seconds(1), [&counter] {return counter == 0;});
ASSERT_TRUE(wait_status) << "All teardown listeners didn't trigger, counter still at " << counter;
// Validate that everything expires:
ASSERT_EQ(static_cast<size_t>(0), creator->GetSize()) << "Not all contexts were evicted as expected";
}