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// Copyright 2016 Yahoo Inc. 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/util/threadstackexecutor.h>
#include <vespa/vespalib/stllike/string.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;
public:
NamedTask(const vespalib::string &name, TestLog &log)
: _name(name),
_log(log)
{
}
virtual void run() override { _log.append(_name); }
};
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));
}
};
TestJob::TestJob(TestLog::UP log, InitializerTask::SP root)
: _log(std::move(log)),
_root(std::move(root))
{ }
TestJob::~TestJob() {}
struct Fixture
{
vespalib::ThreadStackExecutor _executor;
TaskRunner _taskRunner;
Fixture(uint32_t numThreads = 1)
: _executor(numThreads, 128 * 1024),
_taskRunner(_executor)
{
}
void run(const InitializerTask::SP &task) { _taskRunner.runTask(task); }
};
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_MAIN()
{
TEST_RUN_ALL();
}
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