rocksdb/db/db_write_test.cc

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
// This source code is also licensed under the GPLv2 license found in the
// COPYING file in the root directory of this source tree.
#include <memory>
#include <thread>
#include <vector>
#include "db/db_test_util.h"
#include "db/write_batch_internal.h"
#include "port/stack_trace.h"
#include "util/sync_point.h"
namespace rocksdb {
// Test variations of WriteImpl.
class DBWriteTest : public DBTestBase, public testing::WithParamInterface<int> {
public:
DBWriteTest() : DBTestBase("/db_write_test") {}
void Open() { DBTestBase::Reopen(GetOptions(GetParam())); }
};
// Sequence number should be return through input write batch.
TEST_P(DBWriteTest, ReturnSeuqneceNumber) {
Random rnd(4422);
Open();
for (int i = 0; i < 100; i++) {
WriteBatch batch;
batch.Put("key" + ToString(i), test::RandomHumanReadableString(&rnd, 10));
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(),
WriteBatchInternal::Sequence(&batch));
}
}
TEST_P(DBWriteTest, ReturnSeuqneceNumberMultiThreaded) {
constexpr size_t kThreads = 16;
constexpr size_t kNumKeys = 1000;
Open();
ASSERT_EQ(0, dbfull()->GetLatestSequenceNumber());
// Check each sequence is used once and only once.
std::vector<std::atomic_flag> flags(kNumKeys * kThreads + 1);
for (size_t i = 0; i < flags.size(); i++) {
flags[i].clear();
}
auto writer = [&](size_t id) {
Random rnd(4422 + id);
for (size_t k = 0; k < kNumKeys; k++) {
WriteBatch batch;
batch.Put("key" + ToString(id) + "-" + ToString(k),
test::RandomHumanReadableString(&rnd, 10));
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
SequenceNumber sequence = WriteBatchInternal::Sequence(&batch);
ASSERT_GT(sequence, 0);
ASSERT_LE(sequence, kNumKeys * kThreads);
// The sequence isn't consumed by someone else.
ASSERT_FALSE(flags[sequence].test_and_set());
}
};
std::vector<std::thread> threads;
for (size_t i = 0; i < kThreads; i++) {
threads.emplace_back(writer, i);
}
for (size_t i = 0; i < kThreads; i++) {
threads[i].join();
}
}
INSTANTIATE_TEST_CASE_P(DBWriteTestInstance, DBWriteTest,
testing::Values(DBTestBase::kDefault,
DBTestBase::kPipelinedWrite));
} // namespace rocksdb
int main(int argc, char** argv) {
rocksdb::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}