Revision df5eeb85caf76a2f038d4029f95de36b91ee0054 authored by Yi Wu on 13 November 2016, 21:00:52 UTC, committed by Facebook Github Bot on 13 November 2016, 21:09:16 UTC
Summary: Implement a insert hint into skip-list to hint insert position. This is to optimize for the write workload where there are multiple stream of sequential writes. For example, there is a stream of keys of a1, a2, a3... but also b1, b2, b2... Each stream are not neccessary strictly sequential, but can get reorder a little bit. User can specify a prefix extractor and the `SkipListRep` can thus maintan a hint for each of the stream for fast insert into memtable. This is the internal implementation part. See #1419 for the interface part. See inline comments for details. Closes https://github.com/facebook/rocksdb/pull/1449 Differential Revision: D4106781 Pulled By: yiwu-arbug fbshipit-source-id: f4d48c4
1 parent 5ed6508
thread_status_updater_debug.cc
// 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.
#include <mutex>
#include "util/thread_status_updater.h"
#include "db/column_family.h"
namespace rocksdb {
#ifndef NDEBUG
#if ROCKSDB_USING_THREAD_STATUS
void ThreadStatusUpdater::TEST_VerifyColumnFamilyInfoMap(
const std::vector<ColumnFamilyHandle*>& handles,
bool check_exist) {
std::unique_lock<std::mutex> lock(thread_list_mutex_);
if (check_exist) {
assert(cf_info_map_.size() == handles.size());
}
for (auto* handle : handles) {
auto* cfd = reinterpret_cast<ColumnFamilyHandleImpl*>(handle)->cfd();
auto iter __attribute__((unused)) = cf_info_map_.find(cfd);
if (check_exist) {
assert(iter != cf_info_map_.end());
assert(iter->second);
assert(iter->second->cf_name == cfd->GetName());
} else {
assert(iter == cf_info_map_.end());
}
}
}
#else
void ThreadStatusUpdater::TEST_VerifyColumnFamilyInfoMap(
const std::vector<ColumnFamilyHandle*>& handles,
bool check_exist) {
}
#endif // ROCKSDB_USING_THREAD_STATUS
#endif // !NDEBUG
} // namespace rocksdb
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