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//===- unittests/Basic/LaneBasedExecutionQueueTest.cpp --------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "llbuild/Basic/FileSystem.h"
#include "llbuild/Basic/ExecutionQueue.h"
#include "../BuildSystem/TempDir.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/FileSystem.h"
#include "gtest/gtest.h"
#include <atomic>
#include <condition_variable>
#include <ctime>
#include <future>
#include <mutex>
using namespace llbuild;
using namespace llbuild::basic;
namespace {
class DummyDelegate : public ExecutionQueueDelegate {
public:
DummyDelegate() {}
virtual void queueJobStarted(JobDescriptor*) override {}
virtual void queueJobFinished(JobDescriptor*) override {}
virtual void processStarted(ProcessContext*, ProcessHandle, llbuild_pid_t) override {}
virtual void processHadError(ProcessContext*, ProcessHandle,
const Twine& message) override {}
virtual void processHadOutput(ProcessContext*, ProcessHandle,
StringRef data) override {}
virtual void processFinished(ProcessContext*, ProcessHandle,
const ProcessResult& result) override {}
};
class DummyCommand : public JobDescriptor {
public:
DummyCommand() {}
virtual StringRef getOrdinalName() const { return StringRef(""); }
virtual void getShortDescription(SmallVectorImpl<char> &result) const {}
virtual void getVerboseDescription(SmallVectorImpl<char> &result) const {}
};
TEST(LaneBasedExecutionQueueTest, basic) {
DummyDelegate delegate;
std::unique_ptr<FileSystem> fs = createLocalFileSystem();
TmpDir tempDir{"LaneBasedExecutionQueueTest"};
std::string outputFile = tempDir.str() + "/yes-output.txt";
auto queue = std::unique_ptr<ExecutionQueue>(
createLaneBasedExecutionQueue(delegate, 2,
SchedulerAlgorithm::NamePriority,
getDefaultQualityOfService(),
/*environment=*/nullptr));
auto fn = [&outputFile, &queue](QueueJobContext* context) {
queue->executeShellCommand(context, "yes >" + outputFile);
};
DummyCommand dummyCommand;
queue->addJob(QueueJob(&dummyCommand, fn));
// Busy wait until `outputFile` appears which indicates that `yes` is
// running.
time_t start = ::time(NULL);
while (fs->getFileInfo(outputFile).isMissing()) {
if (::time(NULL) > start + 5) {
// We can't fail gracefully because the `LaneBasedExecutionQueue` will
// always wait for spawned processes to exit
abort();
}
}
queue->cancelAllJobs();
queue.reset();
}
TEST(LaneBasedExecutionQueueTest, workingDirectory) {
DummyDelegate delegate;
std::unique_ptr<FileSystem> fs = createLocalFileSystem();
TmpDir tempDir{"LaneBasedExecutionQueueTest"};
std::string outputFile = tempDir.str() + "/yes-output.txt";
auto queue = std::unique_ptr<ExecutionQueue>(
createLaneBasedExecutionQueue(delegate, 2,
SchedulerAlgorithm::NamePriority,
getDefaultQualityOfService(),
/*environment=*/nullptr));
auto fn = [&tempDir, &queue](QueueJobContext* context) {
std::string yescmd = "yes >yes-output.txt";
std::vector<StringRef> commandLine(
{ DefaultShellPath, "-c", yescmd.c_str() });
std::promise<ProcessStatus> p;
auto result = p.get_future();
queue->executeProcess(context, commandLine, {}, {true, false, tempDir.str()},
{[&p](ProcessResult result) mutable {
p.set_value(result.status);
}});
result.get();
};
DummyCommand dummyCommand;
queue->addJob(QueueJob(&dummyCommand, fn));
// Busy wait until `outputFile` appears which indicates that `yes` is
// running.
time_t start = ::time(NULL);
while (fs->getFileInfo(outputFile).isMissing()) {
if (::time(NULL) > start + 5) {
// We can't fail gracefully because the `LaneBasedExecutionQueue` will
// always wait for spawned processes to exit
abort();
}
}
queue->cancelAllJobs();
queue.reset();
}
TEST(LaneBasedExecutionQueueTest, exhaustsQueueAfterCancellation) {
DummyDelegate delegate;
std::mutex queueMutex;
auto queue = std::unique_ptr<ExecutionQueue>(
createLaneBasedExecutionQueue(delegate, 1,
SchedulerAlgorithm::NamePriority,
getDefaultQualityOfService(),
/*environment=*/nullptr));
bool buildStarted { false };
std::condition_variable buildStartedCondition;
std::mutex buildStartedMutex;
std::atomic<int> executions { 0 };
auto fn = [&buildStarted, &buildStartedCondition, &buildStartedMutex,
&executions, &queueMutex, &queue](QueueJobContext* context) {
executions++;
{
std::lock_guard<std::mutex> lock(queueMutex);
if (queue) { queue->cancelAllJobs(); }
}
std::unique_lock<std::mutex> lock(buildStartedMutex);
buildStarted = true;
buildStartedCondition.notify_all();
};
DummyCommand dummyCommand1;
DummyCommand dummyCommand2;
{
std::lock_guard<std::mutex> lock(queueMutex);
queue->addJob(QueueJob(&dummyCommand1, fn));
queue->addJob(QueueJob(&dummyCommand2, fn));
}
{
std::unique_lock<std::mutex> lock(buildStartedMutex);
while (!buildStarted) {
buildStartedCondition.wait(lock);
}
}
{
std::lock_guard<std::mutex> lock(queueMutex);
queue.reset();
}
// Busy wait until our executions are done, but also have a timeout in case they never finish
time_t start = ::time(NULL);
while (executions < 2) {
if (::time(NULL) > start + 5) {
break;
}
}
EXPECT_EQ(executions, 2);
}
}
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