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
63 lines
2.0 KiB
C++
63 lines
2.0 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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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include <assert.h>
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#include "memory/allocator.h"
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#include "memory/arena.h"
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#include "rocksdb/write_buffer_manager.h"
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namespace ROCKSDB_NAMESPACE {
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AllocTracker::AllocTracker(WriteBufferManager* write_buffer_manager)
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: write_buffer_manager_(write_buffer_manager),
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bytes_allocated_(0),
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done_allocating_(false),
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freed_(false) {}
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AllocTracker::~AllocTracker() { FreeMem(); }
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void AllocTracker::Allocate(size_t bytes) {
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assert(write_buffer_manager_ != nullptr);
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if (write_buffer_manager_->enabled() ||
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write_buffer_manager_->cost_to_cache()) {
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bytes_allocated_.fetch_add(bytes, std::memory_order_relaxed);
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write_buffer_manager_->ReserveMem(bytes);
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}
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}
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void AllocTracker::DoneAllocating() {
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if (write_buffer_manager_ != nullptr && !done_allocating_) {
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if (write_buffer_manager_->enabled() ||
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write_buffer_manager_->cost_to_cache()) {
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write_buffer_manager_->ScheduleFreeMem(
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bytes_allocated_.load(std::memory_order_relaxed));
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} else {
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assert(bytes_allocated_.load(std::memory_order_relaxed) == 0);
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}
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done_allocating_ = true;
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}
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}
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void AllocTracker::FreeMem() {
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if (!done_allocating_) {
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DoneAllocating();
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}
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if (write_buffer_manager_ != nullptr && !freed_) {
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if (write_buffer_manager_->enabled() ||
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write_buffer_manager_->cost_to_cache()) {
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write_buffer_manager_->FreeMem(
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bytes_allocated_.load(std::memory_order_relaxed));
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} else {
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assert(bytes_allocated_.load(std::memory_order_relaxed) == 0);
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}
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freed_ = true;
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}
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}
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} // namespace ROCKSDB_NAMESPACE
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