d0c5f28a5c
Summary: Add GetThreadList API, which allows developer to track the status of each process. Currently, calling GetThreadList will only get the list of background threads in RocksDB with their thread-id and thread-type (priority) set. Will add more support on this in the later diffs. ThreadStatus currently has the following properties: // An unique ID for the thread. const uint64_t thread_id; // The type of the thread, it could be ROCKSDB_HIGH_PRIORITY, // ROCKSDB_LOW_PRIORITY, and USER_THREAD const ThreadType thread_type; // The name of the DB instance where the thread is currently // involved with. It would be set to empty string if the thread // does not involve in any DB operation. const std::string db_name; // The name of the column family where the thread is currently // It would be set to empty string if the thread does not involve // in any column family. const std::string cf_name; // The event that the current thread is involved. // It would be set to empty string if the information about event // is not currently available. Test Plan: ./thread_list_test export ROCKSDB_TESTS=GetThreadList ./db_test Reviewers: rven, igor, sdong, ljin Reviewed By: ljin Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D25047
27 lines
978 B
C++
27 lines
978 B
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#include <mutex>
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#include "util/thread_status_impl.h"
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#include "db/column_family.h"
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#if ROCKSDB_USING_THREAD_STATUS
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namespace rocksdb {
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void ThreadStatusImpl::TEST_VerifyColumnFamilyInfoMap(
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const std::vector<ColumnFamilyHandle*>& handles) {
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std::unique_lock<std::mutex> lock(thread_list_mutex_);
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assert(cf_info_map_.size() == handles.size());
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for (auto* handle : handles) {
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auto* cfd = reinterpret_cast<ColumnFamilyHandleImpl*>(handle)->cfd();
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auto iter = cf_info_map_.find(cfd);
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assert(iter != cf_info_map_.end());
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assert(iter->second);
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assert(iter->second->cf_name == cfd->GetName());
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}
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}
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} // namespace rocksdb
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#endif // ROCKSDB_USING_THREAD_STATUS
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