fdf882ded2
Summary: When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433 Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag. Differential Revision: D19977691 fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
// 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).
|
|
|
|
#pragma once
|
|
|
|
#include "monitoring/statistics.h"
|
|
#include "port/port.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/statistics.h"
|
|
#include "rocksdb/thread_status.h"
|
|
#include "util/stop_watch.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
class InstrumentedCondVar;
|
|
|
|
// A wrapper class for port::Mutex that provides additional layer
|
|
// for collecting stats and instrumentation.
|
|
class InstrumentedMutex {
|
|
public:
|
|
explicit InstrumentedMutex(bool adaptive = false)
|
|
: mutex_(adaptive), stats_(nullptr), env_(nullptr),
|
|
stats_code_(0) {}
|
|
|
|
InstrumentedMutex(
|
|
Statistics* stats, Env* env,
|
|
int stats_code, bool adaptive = false)
|
|
: mutex_(adaptive), stats_(stats), env_(env),
|
|
stats_code_(stats_code) {}
|
|
|
|
void Lock();
|
|
|
|
void Unlock() {
|
|
mutex_.Unlock();
|
|
}
|
|
|
|
void AssertHeld() {
|
|
mutex_.AssertHeld();
|
|
}
|
|
|
|
private:
|
|
void LockInternal();
|
|
friend class InstrumentedCondVar;
|
|
port::Mutex mutex_;
|
|
Statistics* stats_;
|
|
Env* env_;
|
|
int stats_code_;
|
|
};
|
|
|
|
// A wrapper class for port::Mutex that provides additional layer
|
|
// for collecting stats and instrumentation.
|
|
class InstrumentedMutexLock {
|
|
public:
|
|
explicit InstrumentedMutexLock(InstrumentedMutex* mutex) : mutex_(mutex) {
|
|
mutex_->Lock();
|
|
}
|
|
|
|
~InstrumentedMutexLock() {
|
|
mutex_->Unlock();
|
|
}
|
|
|
|
private:
|
|
InstrumentedMutex* const mutex_;
|
|
InstrumentedMutexLock(const InstrumentedMutexLock&) = delete;
|
|
void operator=(const InstrumentedMutexLock&) = delete;
|
|
};
|
|
|
|
class InstrumentedCondVar {
|
|
public:
|
|
explicit InstrumentedCondVar(InstrumentedMutex* instrumented_mutex)
|
|
: cond_(&(instrumented_mutex->mutex_)),
|
|
stats_(instrumented_mutex->stats_),
|
|
env_(instrumented_mutex->env_),
|
|
stats_code_(instrumented_mutex->stats_code_) {}
|
|
|
|
void Wait();
|
|
|
|
bool TimedWait(uint64_t abs_time_us);
|
|
|
|
void Signal() {
|
|
cond_.Signal();
|
|
}
|
|
|
|
void SignalAll() {
|
|
cond_.SignalAll();
|
|
}
|
|
|
|
private:
|
|
void WaitInternal();
|
|
bool TimedWaitInternal(uint64_t abs_time_us);
|
|
port::CondVar cond_;
|
|
Statistics* stats_;
|
|
Env* env_;
|
|
int stats_code_;
|
|
};
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|