38be686160
Summary: Added code for generically handing structs to OptionTypeInfo. A struct is a collection of variables handled by their own map of OptionTypeInfos. Examples of structs include Compaction and Cache options. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6425 Reviewed By: siying Differential Revision: D21668789 Pulled By: zhichao-cao fbshipit-source-id: 064b110de39dadf82361ed4663f7ac1a535b0b07
67 lines
2.6 KiB
C++
67 lines
2.6 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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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "rocksdb/cache.h"
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#include "cache/lru_cache.h"
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#include "options/options_helper.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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#ifndef ROCKSDB_LITE
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static std::unordered_map<std::string, OptionTypeInfo>
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lru_cache_options_type_info = {
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{"capacity",
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{offsetof(struct LRUCacheOptions, capacity), OptionType::kSizeT,
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OptionVerificationType::kNormal, OptionTypeFlags::kMutable,
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offsetof(struct LRUCacheOptions, capacity)}},
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{"num_shard_bits",
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{offsetof(struct LRUCacheOptions, num_shard_bits), OptionType::kInt,
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OptionVerificationType::kNormal, OptionTypeFlags::kMutable,
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offsetof(struct LRUCacheOptions, num_shard_bits)}},
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{"strict_capacity_limit",
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{offsetof(struct LRUCacheOptions, strict_capacity_limit),
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OptionType::kBoolean, OptionVerificationType::kNormal,
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OptionTypeFlags::kMutable,
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offsetof(struct LRUCacheOptions, strict_capacity_limit)}},
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{"high_pri_pool_ratio",
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{offsetof(struct LRUCacheOptions, high_pri_pool_ratio),
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OptionType::kDouble, OptionVerificationType::kNormal,
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OptionTypeFlags::kMutable,
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offsetof(struct LRUCacheOptions, high_pri_pool_ratio)}}};
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#endif // ROCKSDB_LITE
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Status Cache::CreateFromString(const ConfigOptions& config_options,
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const std::string& value,
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std::shared_ptr<Cache>* result) {
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Status status;
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std::shared_ptr<Cache> cache;
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if (value.find('=') == std::string::npos) {
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cache = NewLRUCache(ParseSizeT(value));
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} else {
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#ifndef ROCKSDB_LITE
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LRUCacheOptions cache_opts;
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status = OptionTypeInfo::ParseStruct(
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config_options, "", &lru_cache_options_type_info, "", value,
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reinterpret_cast<char*>(&cache_opts));
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if (status.ok()) {
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cache = NewLRUCache(cache_opts);
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}
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#else
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(void)config_options;
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status = Status::NotSupported("Cannot load cache in LITE mode ", value);
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#endif //! ROCKSDB_LITE
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}
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if (status.ok()) {
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result->swap(cache);
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}
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return status;
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}
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} // namespace ROCKSDB_NAMESPACE
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