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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).
#include "monitoring/thread_status_util.h"
#include "monitoring/thread_status_updater.h"
#include "rocksdb/env.h"
#include "rocksdb/system_clock.h"
namespace ROCKSDB_NAMESPACE {
#ifdef ROCKSDB_USING_THREAD_STATUS
thread_local ThreadStatusUpdater*
ThreadStatusUtil::thread_updater_local_cache_ = nullptr;
thread_local bool ThreadStatusUtil::thread_updater_initialized_ = false;
void ThreadStatusUtil::RegisterThread(const Env* env,
ThreadStatus::ThreadType thread_type) {
if (!MaybeInitThreadLocalUpdater(env)) {
return;
}
assert(thread_updater_local_cache_);
thread_updater_local_cache_->RegisterThread(thread_type, env->GetThreadID());
}
void ThreadStatusUtil::UnregisterThread() {
thread_updater_initialized_ = false;
if (thread_updater_local_cache_ != nullptr) {
thread_updater_local_cache_->UnregisterThread();
thread_updater_local_cache_ = nullptr;
}
}
void ThreadStatusUtil::SetColumnFamily(const ColumnFamilyData* cfd,
const Env* env,
bool enable_thread_tracking) {
if (!MaybeInitThreadLocalUpdater(env)) {
return;
}
assert(thread_updater_local_cache_);
if (cfd != nullptr && enable_thread_tracking) {
thread_updater_local_cache_->SetColumnFamilyInfoKey(cfd);
} else {
// When cfd == nullptr or enable_thread_tracking == false, we set
// ColumnFamilyInfoKey to nullptr, which makes SetThreadOperation
// and SetThreadState become no-op.
thread_updater_local_cache_->SetColumnFamilyInfoKey(nullptr);
}
}
void ThreadStatusUtil::SetThreadOperation(ThreadStatus::OperationType op) {
if (thread_updater_local_cache_ == nullptr) {
// thread_updater_local_cache_ must be set in SetColumnFamily
// or other ThreadStatusUtil functions.
return;
}
if (op != ThreadStatus::OP_UNKNOWN) {
uint64_t current_time = SystemClock::Default()->NowMicros();
thread_updater_local_cache_->SetOperationStartTime(current_time);
} else {
// TDOO(yhchiang): we could report the time when we set operation to
// OP_UNKNOWN once the whole instrumentation has been done.
thread_updater_local_cache_->SetOperationStartTime(0);
}
thread_updater_local_cache_->SetThreadOperation(op);
}
ThreadStatus::OperationStage ThreadStatusUtil::SetThreadOperationStage(
ThreadStatus::OperationStage stage) {
if (thread_updater_local_cache_ == nullptr) {
// thread_updater_local_cache_ must be set in SetColumnFamily
// or other ThreadStatusUtil functions.
return ThreadStatus::STAGE_UNKNOWN;
}
return thread_updater_local_cache_->SetThreadOperationStage(stage);
}
void ThreadStatusUtil::SetThreadOperationProperty(int code, uint64_t value) {
if (thread_updater_local_cache_ == nullptr) {
// thread_updater_local_cache_ must be set in SetColumnFamily
// or other ThreadStatusUtil functions.
return;
}
thread_updater_local_cache_->SetThreadOperationProperty(code, value);
}
void ThreadStatusUtil::IncreaseThreadOperationProperty(int code,
uint64_t delta) {
if (thread_updater_local_cache_ == nullptr) {
// thread_updater_local_cache_ must be set in SetColumnFamily
// or other ThreadStatusUtil functions.
return;
}
thread_updater_local_cache_->IncreaseThreadOperationProperty(code, delta);
}
void ThreadStatusUtil::SetThreadState(ThreadStatus::StateType state) {
if (thread_updater_local_cache_ == nullptr) {
// thread_updater_local_cache_ must be set in SetColumnFamily
// or other ThreadStatusUtil functions.
return;
}
thread_updater_local_cache_->SetThreadState(state);
}
void ThreadStatusUtil::ResetThreadStatus() {
if (thread_updater_local_cache_ == nullptr) {
return;
}
thread_updater_local_cache_->ResetThreadStatus();
}
void ThreadStatusUtil::NewColumnFamilyInfo(const DB* db,
const ColumnFamilyData* cfd,
const std::string& cf_name,
const Env* env) {
if (!MaybeInitThreadLocalUpdater(env)) {
return;
}
assert(thread_updater_local_cache_);
if (thread_updater_local_cache_) {
thread_updater_local_cache_->NewColumnFamilyInfo(db, db->GetName(), cfd,
cf_name);
}
}
void ThreadStatusUtil::EraseColumnFamilyInfo(const ColumnFamilyData* cfd) {
if (thread_updater_local_cache_ == nullptr) {
return;
}
thread_updater_local_cache_->EraseColumnFamilyInfo(cfd);
}
void ThreadStatusUtil::EraseDatabaseInfo(const DB* db) {
ThreadStatusUpdater* thread_updater = db->GetEnv()->GetThreadStatusUpdater();
if (thread_updater == nullptr) {
return;
}
thread_updater->EraseDatabaseInfo(db);
}
bool ThreadStatusUtil::MaybeInitThreadLocalUpdater(const Env* env) {
if (!thread_updater_initialized_ && env != nullptr) {
thread_updater_initialized_ = true;
thread_updater_local_cache_ = env->GetThreadStatusUpdater();
}
return (thread_updater_local_cache_ != nullptr);
}
AutoThreadOperationStageUpdater::AutoThreadOperationStageUpdater(
ThreadStatus::OperationStage stage) {
prev_stage_ = ThreadStatusUtil::SetThreadOperationStage(stage);
}
AutoThreadOperationStageUpdater::~AutoThreadOperationStageUpdater() {
ThreadStatusUtil::SetThreadOperationStage(prev_stage_);
}
#else
ThreadStatusUpdater* ThreadStatusUtil::thread_updater_local_cache_ = nullptr;
bool ThreadStatusUtil::thread_updater_initialized_ = false;
bool ThreadStatusUtil::MaybeInitThreadLocalUpdater(const Env* /*env*/) {
return false;
}
void ThreadStatusUtil::SetColumnFamily(const ColumnFamilyData* /*cfd*/,
const Env* /*env*/,
bool /*enable_thread_tracking*/) {}
void ThreadStatusUtil::SetThreadOperation(ThreadStatus::OperationType /*op*/) {}
void ThreadStatusUtil::SetThreadOperationProperty(int /*code*/,
uint64_t /*value*/) {}
void ThreadStatusUtil::IncreaseThreadOperationProperty(int /*code*/,
uint64_t /*delta*/) {}
void ThreadStatusUtil::SetThreadState(ThreadStatus::StateType /*state*/) {}
void ThreadStatusUtil::NewColumnFamilyInfo(const DB* /*db*/,
const ColumnFamilyData* /*cfd*/,
const std::string& /*cf_name*/,
const Env* /*env*/) {}
void ThreadStatusUtil::EraseColumnFamilyInfo(const ColumnFamilyData* /*cfd*/) {}
void ThreadStatusUtil::EraseDatabaseInfo(const DB* /*db*/) {}
void ThreadStatusUtil::ResetThreadStatus() {}
AutoThreadOperationStageUpdater::AutoThreadOperationStageUpdater(
ThreadStatus::OperationStage /*stage*/) {}
AutoThreadOperationStageUpdater::~AutoThreadOperationStageUpdater() {}
#endif // ROCKSDB_USING_THREAD_STATUS
} // namespace ROCKSDB_NAMESPACE
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