mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-30 13:41:46 +00:00
32df9733d1
Summary: Add option write_buffer_manager to help users control total memory spent on memtables across multiple DB instances. Test Plan: Add a new unit test. Reviewers: yhchiang, IslamAbdelRahman Reviewed By: IslamAbdelRahman Subscribers: adela, benj, sumeet, muthu, leveldb, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D59925
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same 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.
|
|
|
|
#include "db/memtable_allocator.h"
|
|
|
|
#include <assert.h>
|
|
#include "rocksdb/write_buffer_manager.h"
|
|
#include "util/arena.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
MemTableAllocator::MemTableAllocator(Allocator* allocator,
|
|
WriteBufferManager* write_buffer_manager)
|
|
: allocator_(allocator),
|
|
write_buffer_manager_(write_buffer_manager),
|
|
bytes_allocated_(0) {}
|
|
|
|
MemTableAllocator::~MemTableAllocator() { DoneAllocating(); }
|
|
|
|
char* MemTableAllocator::Allocate(size_t bytes) {
|
|
assert(write_buffer_manager_ != nullptr);
|
|
bytes_allocated_.fetch_add(bytes, std::memory_order_relaxed);
|
|
write_buffer_manager_->ReserveMem(bytes);
|
|
return allocator_->Allocate(bytes);
|
|
}
|
|
|
|
char* MemTableAllocator::AllocateAligned(size_t bytes, size_t huge_page_size,
|
|
Logger* logger) {
|
|
assert(write_buffer_manager_ != nullptr);
|
|
bytes_allocated_.fetch_add(bytes, std::memory_order_relaxed);
|
|
write_buffer_manager_->ReserveMem(bytes);
|
|
return allocator_->AllocateAligned(bytes, huge_page_size, logger);
|
|
}
|
|
|
|
void MemTableAllocator::DoneAllocating() {
|
|
if (write_buffer_manager_ != nullptr) {
|
|
write_buffer_manager_->FreeMem(
|
|
bytes_allocated_.load(std::memory_order_relaxed));
|
|
write_buffer_manager_ = nullptr;
|
|
}
|
|
}
|
|
|
|
size_t MemTableAllocator::BlockSize() const { return allocator_->BlockSize(); }
|
|
|
|
} // namespace rocksdb
|