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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/log/log.h>
LOG_SETUP("task_runner_test");
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/searchcore/proton/initializer/initializer_task.h>
#include <vespa/searchcore/proton/initializer/task_runner.h>
#include <vespa/vespalib/stllike/string.h>
#include <vespa/vespalib/util/size_literals.h>
#include <vespa/vespalib/util/threadstackexecutor.h>
#include <mutex>
using proton::initializer::InitializerTask;
using proton::initializer::TaskRunner;
struct TestLog
{
std::mutex _lock;
vespalib::string _log;
using UP = std::unique_ptr<TestLog>;
TestLog()
: _lock(),
_log()
{
}
void append(vespalib::string str) {
std::lock_guard<std::mutex> guard(_lock);
_log += str;
}
vespalib::string result() const { return _log; }
};
class NamedTask : public InitializerTask
{
protected:
vespalib::string _name;
TestLog &_log;
size_t _transient_memory_usage;
public:
NamedTask(const vespalib::string &name, TestLog &log, size_t transient_memory_usage = 0)
: _name(name),
_log(log),
_transient_memory_usage(transient_memory_usage)
{
}
virtual void run() override { _log.append(_name); }
size_t get_transient_memory_usage() const override { return _transient_memory_usage; }
};
struct TestJob {
TestLog::UP _log;
InitializerTask::SP _root;
TestJob(TestLog::UP log, InitializerTask::SP root);
TestJob(TestJob &&) = default;
~TestJob();
static TestJob setupCDependsOnAandB()
{
TestLog::UP log = std::make_unique<TestLog>();
InitializerTask::SP A(std::make_shared<NamedTask>("A", *log));
InitializerTask::SP B(std::make_shared<NamedTask>("B", *log));
InitializerTask::SP C(std::make_shared<NamedTask>("C", *log));
C->addDependency(A);
C->addDependency(B);
return TestJob(std::move(log), std::move(C));
}
static TestJob setupDiamond()
{
TestLog::UP log = std::make_unique<TestLog>();
InitializerTask::SP A(std::make_shared<NamedTask>("A", *log));
InitializerTask::SP B(std::make_shared<NamedTask>("B", *log));
InitializerTask::SP C(std::make_shared<NamedTask>("C", *log));
InitializerTask::SP D(std::make_shared<NamedTask>("D", *log));
C->addDependency(A);
C->addDependency(B);
A->addDependency(D);
B->addDependency(D);
return TestJob(std::move(log), std::move(C));
}
static TestJob setupResourceUsingTasks()
{
auto log = std::make_unique<TestLog>();
auto task_a = std::make_shared<NamedTask>("A", *log, 0);
auto task_b = std::make_shared<NamedTask>("B", *log, 10);
auto task_c = std::make_shared<NamedTask>("C", *log, 2);
auto task_d = std::make_shared<NamedTask>("D", *log, 5);
auto task_e = std::make_shared<NamedTask>("E", *log, 0);
task_e->addDependency(task_a);
task_e->addDependency(task_b);
task_e->addDependency(task_c);
task_e->addDependency(task_d);
return TestJob(std::move(log), std::move(task_e));
}
};
TestJob::TestJob(TestLog::UP log, InitializerTask::SP root)
: _log(std::move(log)),
_root(std::move(root))
{ }
TestJob::~TestJob() = default;
struct Fixture
{
vespalib::ThreadStackExecutor _executor;
TaskRunner _taskRunner;
Fixture(uint32_t numThreads = 1)
: _executor(numThreads),
_taskRunner(_executor)
{ }
~Fixture();
void run(const InitializerTask::SP &task) { _taskRunner.runTask(task); }
};
Fixture::~Fixture() = default;
TEST_F("1 thread, 2 dependees, 1 depender", Fixture(1))
{
TestJob job = TestJob::setupCDependsOnAandB();
f.run(job._root);
EXPECT_EQUAL("ABC", job._log->result());
}
TEST_F("1 thread, dag graph", Fixture(1))
{
for (int iter = 0; iter < 1000; ++iter) {
TestJob job = TestJob::setupDiamond();
f.run(job._root);
EXPECT_EQUAL("DABC", job._log->result());
}
}
TEST_F("multiple threads, dag graph", Fixture(10))
{
int dabc_count = 0;
int dbac_count = 0;
for (int iter = 0; iter < 1000; ++iter) {
TestJob job = TestJob::setupDiamond();
f.run(job._root);
vespalib::string result = job._log->result();
EXPECT_TRUE("DABC" == result || "DBAC" == result);
if ("DABC" == result) {
++dabc_count;
}
if ("DBAC" == result) {
++dbac_count;
}
}
LOG(info, "dabc=%d, dbac=%d", dabc_count, dbac_count);
}
TEST_F("single thread with resource using tasks", Fixture(1))
{
auto job = TestJob::setupResourceUsingTasks();
f.run(job._root);
EXPECT_EQUAL("BDCAE", job._log->result());
}
TEST_MAIN()
{
TEST_RUN_ALL();
}
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