634ad51703
a31c8aa Add NewAppendableFile for win32 environment 1913d71 Merge upstream LevelDB 1.19 3080a45 Increase leveldb version to 1.19. fa6dc01 A zippy change broke test assumptions about the size of compressed output. Fix the tests by allowing more slop in zippy's behavior. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=123432472 06a191b fix problems in LevelDB's caching code a7bff69 Fix LevelDB build when asserts are enabled in release builds. (#367) ea992b4 Change std::uint64_t to uint64_t (#354) e84b5bd This CL fixes a bug encountered when reading records from leveldb files that have been split, as in a [] input task split. 3211343 Deleted redundant null ptr check prior to delete. 7306ef8 Merge pull request #348 from randomascii/master 6b18316 Fix signed/unsigned mismatch on VC++ builds adbe3eb Putting build artifacts in subdirectory. 2d0320a Merge pull request #329 from ralphtheninja/travis-badge dd1c3c3 add travis build badge 43fcf23 Merge pull request #328 from cmumford/master 9fcae61 Added a Travis CI build file. dac40d2 Merge pull request #284 from ideawu/master 8ec241a Merge pull request #317 from falvojr/patch-1 5d36bed Merge pull request #272 from vapier/master 4753c9b Added a contributors section to README.md e2446d0 Merge pull request #275 from paulirish/patch-1 706b7f8 Resolve race when getting approximate-memory-usage property 3c9ff3c Only compiling TrimSpace on linux. f8d205c Including atomic_pointer.h in port_posix 889de31 Let LevelDB use xcrun to determine Xcode.app path instead of using a hardcoded path. 528c2bc Add "approximate-memory-usage" property to leveldb::DB::GetProperty 359b6bc Add leveldb::Cache::Prune 50e77a8 Fix size_t/int comparison/conversion issues in leveldb. 5208e79 Added leveldb::Status::IsInvalidArgument() method. ce45404 Suppress error reporting after seeking but before a valid First or Full record is encountered. b9afa1f include <assert> -> <cassert> edf2939 Update README.md 65190ac Will not reuse manifest if reuse_logs options is false. ac1d69d LevelDB now attempts to reuse the preceding MANIFEST and log file when re-opened. 76bba13 fix indent 8fcceb2 log compaction output file's level along with number 0e0f074 documentation. improved link c85addc readme: improved documentation link ceff6f1 Fix Android/MIPS build. 77948e7 Add benchmark that measures cost of repeatedly opening the database. 34ad72e Move header guard below copyright banner. a75d435 Clean up layering of storage/leveldb/... b234f65 Added a new fault injection test. c4c38f9 Add arm64 support to leveldb. cea9b10 Fixed incorrect comment wording for Iterator::Seek. c00c569 Deleted old README file. git-subtree-dir: src/leveldb git-subtree-split: a31c8aa408d5594830f7cb20ead1ef1dff51b79e
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
// 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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#ifndef STORAGE_LEVELDB_DB_LOG_WRITER_H_
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#define STORAGE_LEVELDB_DB_LOG_WRITER_H_
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#include <stdint.h>
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#include "db/log_format.h"
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#include "leveldb/slice.h"
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#include "leveldb/status.h"
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namespace leveldb {
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class WritableFile;
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namespace log {
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class Writer {
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public:
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// Create a writer that will append data to "*dest".
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// "*dest" must be initially empty.
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// "*dest" must remain live while this Writer is in use.
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explicit Writer(WritableFile* dest);
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// Create a writer that will append data to "*dest".
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// "*dest" must have initial length "dest_length".
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// "*dest" must remain live while this Writer is in use.
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Writer(WritableFile* dest, uint64_t dest_length);
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~Writer();
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Status AddRecord(const Slice& slice);
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private:
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WritableFile* dest_;
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int block_offset_; // Current offset in block
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// crc32c values for all supported record types. These are
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// pre-computed to reduce the overhead of computing the crc of the
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// record type stored in the header.
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uint32_t type_crc_[kMaxRecordType + 1];
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Status EmitPhysicalRecord(RecordType type, const char* ptr, size_t length);
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// No copying allowed
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Writer(const Writer&);
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void operator=(const Writer&);
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};
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} // namespace log
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} // namespace leveldb
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#endif // STORAGE_LEVELDB_DB_LOG_WRITER_H_
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