forked from mindspore-Ecosystem/mindspore
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/**
|
|
* Copyright 2019 Huawei Technologies Co., Ltd
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "common/common.h"
|
|
#include "gtest/gtest.h"
|
|
#include "minddata/dataset/util/task_manager.h"
|
|
|
|
using namespace mindspore::dataset;
|
|
|
|
class MindDataTestTaskManager : public UT::Common {
|
|
public:
|
|
MindDataTestTaskManager() {}
|
|
|
|
void SetUp() { Services::CreateInstance(); }
|
|
};
|
|
|
|
TEST_F(MindDataTestTaskManager, Test1) {
|
|
// Clear the rc of the master thread if any
|
|
(void)TaskManager::GetMasterThreadRc();
|
|
TaskGroup vg;
|
|
Status vg_rc = vg.CreateAsyncTask("Test error", []() -> Status {
|
|
TaskManager::FindMe()->Post();
|
|
throw std::bad_alloc();
|
|
});
|
|
ASSERT_TRUE(vg_rc.IsOk() || vg_rc == StatusCode::kMDOutOfMemory);
|
|
ASSERT_TRUE(vg.join_all().IsOk());
|
|
ASSERT_TRUE(vg.GetTaskErrorIfAny() == StatusCode::kMDOutOfMemory);
|
|
// Test the error is passed back to the master thread if vg_rc above is OK.
|
|
// If vg_rc is kOutOfMemory, the group error is already passed back.
|
|
// Some compiler may choose to run the next line in parallel with the above 3 lines
|
|
// and this will cause some mismatch once a while.
|
|
// To block this racing condition, we need to create a dependency that the next line
|
|
// depends on previous lines.
|
|
if (vg.GetTaskErrorIfAny().IsError() && vg_rc.IsOk()) {
|
|
Status rc = TaskManager::GetMasterThreadRc();
|
|
ASSERT_TRUE(rc == StatusCode::kMDOutOfMemory);
|
|
}
|
|
}
|
|
|
|
TEST_F(MindDataTestTaskManager, Test2) {
|
|
// This testcase will spawn about 100 threads and block on a conditional variable.
|
|
// The master thread will try to interrupt them almost at the same time. This can
|
|
// cause a racing condition that some threads may miss the interrupt and blocked.
|
|
// The new logic of Task::Join() will do a time-out join and wake up all those
|
|
// threads that miss the interrupt.
|
|
// Clear the rc of the master thread if any
|
|
(void)TaskManager::GetMasterThreadRc();
|
|
TaskGroup vg;
|
|
CondVar cv;
|
|
std::mutex mux;
|
|
Status rc;
|
|
rc = cv.Register(vg.GetIntrpService());
|
|
EXPECT_TRUE(rc.IsOk());
|
|
auto block_forever = [&cv, &mux]() -> Status {
|
|
std::unique_lock<std::mutex> lck(mux);
|
|
TaskManager::FindMe()->Post();
|
|
std::this_thread::sleep_for(std::chrono::milliseconds(1));
|
|
RETURN_IF_NOT_OK(cv.Wait(&lck, []() -> bool { return false; }));
|
|
return Status::OK();
|
|
};
|
|
auto f = [&vg, &block_forever]() -> Status {
|
|
for (auto i = 0; i < 100; ++i) {
|
|
RETURN_IF_NOT_OK(vg.CreateAsyncTask("Spawn block threads", block_forever));
|
|
}
|
|
return Status::OK();
|
|
};
|
|
rc = f();
|
|
vg.interrupt_all();
|
|
EXPECT_TRUE(rc.IsOk());
|
|
// Now we test the async Join
|
|
ASSERT_TRUE(vg.join_all(Task::WaitFlag::kNonBlocking).IsOk());
|
|
}
|