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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
//
#ifdef GFLAGS
#include "db_stress_tool/db_stress_common.h"
#include "utilities/fault_injection_fs.h"
namespace ROCKSDB_NAMESPACE {
void ThreadBody(void* v) {
ThreadState* thread = reinterpret_cast<ThreadState*>(v);
SharedState* shared = thread->shared;
if (!FLAGS_skip_verifydb && shared->ShouldVerifyAtBeginning()) {
thread->shared->GetStressTest()->VerifyDb(thread);
}
{
MutexLock l(shared->GetMutex());
shared->IncInitialized();
if (shared->AllInitialized()) {
shared->GetCondVar()->SignalAll();
}
while (!shared->Started()) {
shared->GetCondVar()->Wait();
}
}
thread->shared->GetStressTest()->OperateDb(thread);
{
MutexLock l(shared->GetMutex());
shared->IncOperated();
if (shared->AllOperated()) {
shared->GetCondVar()->SignalAll();
}
while (!shared->VerifyStarted()) {
shared->GetCondVar()->Wait();
}
}
if (!FLAGS_skip_verifydb) {
thread->shared->GetStressTest()->VerifyDb(thread);
}
{
MutexLock l(shared->GetMutex());
shared->IncDone();
if (shared->AllDone()) {
shared->GetCondVar()->SignalAll();
}
}
}
bool RunStressTest(StressTest* stress) {
SystemClock* clock = db_stress_env->GetSystemClock().get();
SharedState shared(db_stress_env, stress);
if (shared.ShouldVerifyAtBeginning() && FLAGS_preserve_unverified_changes) {
Status s = InitUnverifiedSubdir(FLAGS_db);
if (s.ok() && !FLAGS_expected_values_dir.empty()) {
s = InitUnverifiedSubdir(FLAGS_expected_values_dir);
}
if (!s.ok()) {
fprintf(stderr, "Failed to setup unverified state dir: %s\n",
s.ToString().c_str());
exit(1);
}
}
stress->InitDb(&shared);
stress->FinishInitDb(&shared);
if (FLAGS_sync_fault_injection) {
fault_fs_guard->SetFilesystemDirectWritable(false);
}
if (FLAGS_write_fault_one_in) {
fault_fs_guard->EnableWriteErrorInjection();
}
uint32_t n = FLAGS_threads;
uint64_t now = clock->NowMicros();
fprintf(stdout, "%s Initializing worker threads\n",
clock->TimeToString(now / 1000000).c_str());
shared.SetThreads(n);
if (FLAGS_compaction_thread_pool_adjust_interval > 0) {
shared.IncBgThreads();
}
if (FLAGS_continuous_verification_interval > 0) {
shared.IncBgThreads();
}
std::vector<ThreadState*> threads(n);
for (uint32_t i = 0; i < n; i++) {
threads[i] = new ThreadState(i, &shared);
db_stress_env->StartThread(ThreadBody, threads[i]);
}
ThreadState bg_thread(0, &shared);
if (FLAGS_compaction_thread_pool_adjust_interval > 0) {
db_stress_env->StartThread(PoolSizeChangeThread, &bg_thread);
}
ThreadState continuous_verification_thread(0, &shared);
if (FLAGS_continuous_verification_interval > 0) {
db_stress_env->StartThread(DbVerificationThread,
&continuous_verification_thread);
}
// Each thread goes through the following states:
// initializing -> wait for others to init -> read/populate/depopulate
// wait for others to operate -> verify -> done
{
MutexLock l(shared.GetMutex());
while (!shared.AllInitialized()) {
shared.GetCondVar()->Wait();
}
if (shared.ShouldVerifyAtBeginning()) {
if (shared.HasVerificationFailedYet()) {
fprintf(stderr, "Crash-recovery verification failed :(\n");
} else {
fprintf(stdout, "Crash-recovery verification passed :)\n");
Status s = DestroyUnverifiedSubdir(FLAGS_db);
if (s.ok() && !FLAGS_expected_values_dir.empty()) {
s = DestroyUnverifiedSubdir(FLAGS_expected_values_dir);
}
if (!s.ok()) {
fprintf(stderr, "Failed to cleanup unverified state dir: %s\n",
s.ToString().c_str());
exit(1);
}
}
}
// This is after the verification step to avoid making all those `Get()`s
// and `MultiGet()`s contend on the DB-wide trace mutex.
if (!FLAGS_expected_values_dir.empty()) {
stress->TrackExpectedState(&shared);
}
now = clock->NowMicros();
fprintf(stdout, "%s Starting database operations\n",
clock->TimeToString(now / 1000000).c_str());
shared.SetStart();
shared.GetCondVar()->SignalAll();
while (!shared.AllOperated()) {
shared.GetCondVar()->Wait();
}
now = clock->NowMicros();
if (FLAGS_test_batches_snapshots) {
fprintf(stdout, "%s Limited verification already done during gets\n",
clock->TimeToString((uint64_t)now / 1000000).c_str());
} else if (FLAGS_skip_verifydb) {
fprintf(stdout, "%s Verification skipped\n",
clock->TimeToString((uint64_t)now / 1000000).c_str());
} else {
fprintf(stdout, "%s Starting verification\n",
clock->TimeToString((uint64_t)now / 1000000).c_str());
}
shared.SetStartVerify();
shared.GetCondVar()->SignalAll();
while (!shared.AllDone()) {
shared.GetCondVar()->Wait();
}
}
for (unsigned int i = 1; i < n; i++) {
threads[0]->stats.Merge(threads[i]->stats);
}
threads[0]->stats.Report("Stress Test");
for (unsigned int i = 0; i < n; i++) {
delete threads[i];
threads[i] = nullptr;
}
now = clock->NowMicros();
if (!FLAGS_skip_verifydb && !FLAGS_test_batches_snapshots &&
!shared.HasVerificationFailedYet()) {
fprintf(stdout, "%s Verification successful\n",
clock->TimeToString(now / 1000000).c_str());
}
stress->PrintStatistics();
if (FLAGS_compaction_thread_pool_adjust_interval > 0 ||
FLAGS_continuous_verification_interval > 0) {
MutexLock l(shared.GetMutex());
shared.SetShouldStopBgThread();
while (!shared.BgThreadsFinished()) {
shared.GetCondVar()->Wait();
}
}
if (shared.HasVerificationFailedYet()) {
fprintf(stderr, "Verification failed :(\n");
return false;
}
return true;
}
} // namespace ROCKSDB_NAMESPACE
#endif // GFLAGS
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