mirror of
https://github.com/facebook/rocksdb.git
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64324e329e
Summary: As you know, almost all compilers support "pragma once" keyword instead of using include guards. To be keep consistency between header files, all header files are edited. Besides this, try to fix some warnings about loss of data. Pull Request resolved: https://github.com/facebook/rocksdb/pull/4339 Differential Revision: D9654990 Pulled By: ajkr fbshipit-source-id: c2cf3d2d03a599847684bed81378c401920ca848
109 lines
3.4 KiB
C++
109 lines
3.4 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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#ifndef ROCKSDB_LITE
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#include "utilities/blob_db/blob_db_impl.h"
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#include "util/filename.h"
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#include "util/logging.h"
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#include "util/mutexlock.h"
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// BlobDBImpl methods to get snapshot of files, e.g. for replication.
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namespace rocksdb {
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namespace blob_db {
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Status BlobDBImpl::DisableFileDeletions() {
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// Disable base DB file deletions.
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Status s = db_impl_->DisableFileDeletions();
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if (!s.ok()) {
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return s;
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}
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int count = 0;
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{
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// Hold delete_file_mutex_ to make sure no DeleteObsoleteFiles job
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// is running.
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MutexLock l(&delete_file_mutex_);
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count = ++disable_file_deletions_;
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}
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ROCKS_LOG_INFO(db_options_.info_log,
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"Disalbed blob file deletions. count: %d", count);
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return Status::OK();
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}
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Status BlobDBImpl::EnableFileDeletions(bool force) {
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// Enable base DB file deletions.
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Status s = db_impl_->EnableFileDeletions(force);
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if (!s.ok()) {
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return s;
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}
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int count = 0;
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{
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MutexLock l(&delete_file_mutex_);
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if (force) {
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disable_file_deletions_ = 0;
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} else if (disable_file_deletions_ > 0) {
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count = --disable_file_deletions_;
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}
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assert(count >= 0);
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}
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ROCKS_LOG_INFO(db_options_.info_log, "Enabled blob file deletions. count: %d",
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count);
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// Consider trigger DeleteobsoleteFiles once after re-enabled, if we are to
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// make DeleteobsoleteFiles re-run interval configuration.
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return Status::OK();
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}
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Status BlobDBImpl::GetLiveFiles(std::vector<std::string>& ret,
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uint64_t* manifest_file_size,
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bool flush_memtable) {
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if (!bdb_options_.path_relative) {
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return Status::NotSupported(
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"Not able to get relative blob file path from absolute blob_dir.");
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}
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// Hold a lock in the beginning to avoid updates to base DB during the call
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ReadLock rl(&mutex_);
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Status s = db_->GetLiveFiles(ret, manifest_file_size, flush_memtable);
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if (!s.ok()) {
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return s;
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}
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ret.reserve(ret.size() + blob_files_.size());
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for (auto bfile_pair : blob_files_) {
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auto blob_file = bfile_pair.second;
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// Path should be relative to db_name, but begin with slash.
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ret.emplace_back(
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BlobFileName("", bdb_options_.blob_dir, blob_file->BlobFileNumber()));
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}
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return Status::OK();
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}
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void BlobDBImpl::GetLiveFilesMetaData(std::vector<LiveFileMetaData>* metadata) {
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// Path should be relative to db_name.
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assert(bdb_options_.path_relative);
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// Hold a lock in the beginning to avoid updates to base DB during the call
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ReadLock rl(&mutex_);
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db_->GetLiveFilesMetaData(metadata);
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for (auto bfile_pair : blob_files_) {
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auto blob_file = bfile_pair.second;
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LiveFileMetaData filemetadata;
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filemetadata.size = static_cast<size_t>(blob_file->GetFileSize());
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// Path should be relative to db_name, but begin with slash.
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filemetadata.name =
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BlobFileName("", bdb_options_.blob_dir, blob_file->BlobFileNumber());
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auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(DefaultColumnFamily());
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filemetadata.column_family_name = cfh->GetName();
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metadata->emplace_back(filemetadata);
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}
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}
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} // namespace blob_db
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} // namespace rocksdb
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#endif // !ROCKSDB_LITE
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