fdf882ded2
Summary: When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433 Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag. Differential Revision: D19977691 fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
|
|
#include "table/block_based/uncompression_dict_reader.h"
|
|
#include "monitoring/perf_context_imp.h"
|
|
#include "table/block_based/block_based_table_reader.h"
|
|
#include "util/compression.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
Status UncompressionDictReader::Create(
|
|
const BlockBasedTable* table, FilePrefetchBuffer* prefetch_buffer,
|
|
bool use_cache, bool prefetch, bool pin,
|
|
BlockCacheLookupContext* lookup_context,
|
|
std::unique_ptr<UncompressionDictReader>* uncompression_dict_reader) {
|
|
assert(table);
|
|
assert(table->get_rep());
|
|
assert(!pin || prefetch);
|
|
assert(uncompression_dict_reader);
|
|
|
|
CachableEntry<UncompressionDict> uncompression_dict;
|
|
if (prefetch || !use_cache) {
|
|
const Status s = ReadUncompressionDictionary(
|
|
table, prefetch_buffer, ReadOptions(), use_cache,
|
|
nullptr /* get_context */, lookup_context, &uncompression_dict);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
if (use_cache && !pin) {
|
|
uncompression_dict.Reset();
|
|
}
|
|
}
|
|
|
|
uncompression_dict_reader->reset(
|
|
new UncompressionDictReader(table, std::move(uncompression_dict)));
|
|
|
|
return Status::OK();
|
|
}
|
|
|
|
Status UncompressionDictReader::ReadUncompressionDictionary(
|
|
const BlockBasedTable* table, FilePrefetchBuffer* prefetch_buffer,
|
|
const ReadOptions& read_options, bool use_cache, GetContext* get_context,
|
|
BlockCacheLookupContext* lookup_context,
|
|
CachableEntry<UncompressionDict>* uncompression_dict) {
|
|
// TODO: add perf counter for compression dictionary read time
|
|
|
|
assert(table);
|
|
assert(uncompression_dict);
|
|
assert(uncompression_dict->IsEmpty());
|
|
|
|
const BlockBasedTable::Rep* const rep = table->get_rep();
|
|
assert(rep);
|
|
assert(!rep->compression_dict_handle.IsNull());
|
|
|
|
const Status s = table->RetrieveBlock(
|
|
prefetch_buffer, read_options, rep->compression_dict_handle,
|
|
UncompressionDict::GetEmptyDict(), uncompression_dict,
|
|
BlockType::kCompressionDictionary, get_context, lookup_context,
|
|
/* for_compaction */ false, use_cache);
|
|
|
|
if (!s.ok()) {
|
|
ROCKS_LOG_WARN(
|
|
rep->ioptions.info_log,
|
|
"Encountered error while reading data from compression dictionary "
|
|
"block %s",
|
|
s.ToString().c_str());
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status UncompressionDictReader::GetOrReadUncompressionDictionary(
|
|
FilePrefetchBuffer* prefetch_buffer, bool no_io, GetContext* get_context,
|
|
BlockCacheLookupContext* lookup_context,
|
|
CachableEntry<UncompressionDict>* uncompression_dict) const {
|
|
assert(uncompression_dict);
|
|
|
|
if (!uncompression_dict_.IsEmpty()) {
|
|
uncompression_dict->SetUnownedValue(uncompression_dict_.GetValue());
|
|
return Status::OK();
|
|
}
|
|
|
|
ReadOptions read_options;
|
|
if (no_io) {
|
|
read_options.read_tier = kBlockCacheTier;
|
|
}
|
|
|
|
return ReadUncompressionDictionary(table_, prefetch_buffer, read_options,
|
|
cache_dictionary_blocks(), get_context,
|
|
lookup_context, uncompression_dict);
|
|
}
|
|
|
|
size_t UncompressionDictReader::ApproximateMemoryUsage() const {
|
|
assert(!uncompression_dict_.GetOwnValue() ||
|
|
uncompression_dict_.GetValue() != nullptr);
|
|
size_t usage = uncompression_dict_.GetOwnValue()
|
|
? uncompression_dict_.GetValue()->ApproximateMemoryUsage()
|
|
: 0;
|
|
|
|
#ifdef ROCKSDB_MALLOC_USABLE_SIZE
|
|
usage += malloc_usable_size(const_cast<UncompressionDictReader*>(this));
|
|
#else
|
|
usage += sizeof(*this);
|
|
#endif // ROCKSDB_MALLOC_USABLE_SIZE
|
|
|
|
return usage;
|
|
}
|
|
|
|
bool UncompressionDictReader::cache_dictionary_blocks() const {
|
|
assert(table_);
|
|
assert(table_->get_rep());
|
|
|
|
return table_->get_rep()->table_options.cache_index_and_filter_blocks;
|
|
}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|