53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
|
// Copyright (c) 2014, 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 <assert.h>
|
||
|
|
|
||
|
|
#include "db/memtable_allocator.h"
|
||
|
|
#include "db/writebuffer.h"
|
||
|
|
#include "util/arena.h"
|
||
|
|
|
||
|
|
namespace rocksdb {
|
||
|
|
|
||
|
|
MemTableAllocator::MemTableAllocator(Arena* arena, WriteBuffer* write_buffer)
|
||
|
|
: arena_(arena), write_buffer_(write_buffer), bytes_allocated_(0) {
|
||
|
|
}
|
||
|
|
|
||
|
|
MemTableAllocator::~MemTableAllocator() {
|
||
|
|
DoneAllocating();
|
||
|
|
}
|
||
|
|
|
||
|
|
char* MemTableAllocator::Allocate(size_t bytes) {
|
||
|
|
assert(write_buffer_ != nullptr);
|
||
|
|
bytes_allocated_ += bytes;
|
||
|
|
write_buffer_->ReserveMem(bytes);
|
||
|
|
return arena_->Allocate(bytes);
|
||
|
|
}
|
||
|
|
|
||
|
|
char* MemTableAllocator::AllocateAligned(size_t bytes, size_t huge_page_size,
|
||
|
|
Logger* logger) {
|
||
|
|
assert(write_buffer_ != nullptr);
|
||
|
|
bytes_allocated_ += bytes;
|
||
|
|
write_buffer_->ReserveMem(bytes);
|
||
|
|
return arena_->AllocateAligned(bytes, huge_page_size, logger);
|
||
|
|
}
|
||
|
|
|
||
|
|
void MemTableAllocator::DoneAllocating() {
|
||
|
|
if (write_buffer_ != nullptr) {
|
||
|
|
write_buffer_->FreeMem(bytes_allocated_);
|
||
|
|
write_buffer_ = nullptr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t MemTableAllocator::BlockSize() const {
|
||
|
|
return arena_->BlockSize();
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace rocksdb
|