92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include "util/instrumented_mutex.h"
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#include "util/perf_context_imp.h"
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#include "util/sync_point.h"
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#include "util/thread_status_util.h"
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namespace rocksdb {
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namespace {
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bool ShouldReportToStats(Env* env, Statistics* stats) {
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return env != nullptr && stats != nullptr &&
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stats->stats_level_ > kExceptTimeForMutex;
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}
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} // namespace
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void InstrumentedMutex::Lock() {
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PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(db_mutex_lock_nanos,
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stats_code_ == DB_MUTEX_WAIT_MICROS);
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uint64_t wait_time_micros = 0;
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if (ShouldReportToStats(env_, stats_)) {
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{
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StopWatch sw(env_, nullptr, 0, &wait_time_micros);
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LockInternal();
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}
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RecordTick(stats_, stats_code_, wait_time_micros);
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} else {
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LockInternal();
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}
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}
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void InstrumentedMutex::LockInternal() {
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#ifndef NDEBUG
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ThreadStatusUtil::TEST_StateDelay(ThreadStatus::STATE_MUTEX_WAIT);
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#endif
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mutex_.Lock();
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}
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void InstrumentedCondVar::Wait() {
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PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(db_condition_wait_nanos,
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stats_code_ == DB_MUTEX_WAIT_MICROS);
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uint64_t wait_time_micros = 0;
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if (ShouldReportToStats(env_, stats_)) {
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{
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StopWatch sw(env_, nullptr, 0, &wait_time_micros);
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WaitInternal();
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}
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RecordTick(stats_, stats_code_, wait_time_micros);
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} else {
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WaitInternal();
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}
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}
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void InstrumentedCondVar::WaitInternal() {
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#ifndef NDEBUG
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ThreadStatusUtil::TEST_StateDelay(ThreadStatus::STATE_MUTEX_WAIT);
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#endif
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cond_.Wait();
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}
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bool InstrumentedCondVar::TimedWait(uint64_t abs_time_us) {
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PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(db_condition_wait_nanos,
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stats_code_ == DB_MUTEX_WAIT_MICROS);
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uint64_t wait_time_micros = 0;
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bool result = false;
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if (ShouldReportToStats(env_, stats_)) {
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{
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StopWatch sw(env_, nullptr, 0, &wait_time_micros);
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result = TimedWaitInternal(abs_time_us);
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}
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RecordTick(stats_, stats_code_, wait_time_micros);
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} else {
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result = TimedWaitInternal(abs_time_us);
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}
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return result;
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}
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bool InstrumentedCondVar::TimedWaitInternal(uint64_t abs_time_us) {
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#ifndef NDEBUG
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ThreadStatusUtil::TEST_StateDelay(ThreadStatus::STATE_MUTEX_WAIT);
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#endif
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TEST_SYNC_POINT_CALLBACK("InstrumentedCondVar::TimedWaitInternal",
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&abs_time_us);
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return cond_.TimedWait(abs_time_us);
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}
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} // namespace rocksdb
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