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Commits on Dec 11, 2014
  1. @cmumford

    Add benchmark that measures cost of repeatedly opening the database.

    Sanjay Ghemawat authored cmumford committed
  2. @cmumford
  3. @cmumford

    Clean up layering of storage/leveldb/...

    cmumford authored
    With these changes, this package should be properly cleaned up and not require
    any further changes.
  4. @cmumford

    Added a new fault injection test.

    cmumford authored
    This test is intended to ensure leveldb properly detects and recovers from
    faults - specifically unwritten file data lost as a result of a system reset.
  5. @cmumford

    Add arm64 support to leveldb.

    cmumford authored
  6. @cmumford
  7. @cmumford

    Deleted old README file.

    cmumford authored
    README was superseded by and should have been deleted in 803d692.
Commits on Sep 16, 2014
  1. @cmumford

    Release 1.18

    cmumford authored
    Changes are:
    * Update version number to 1.18
    * Replace the basic fprintf call with a call to fwrite in order to
      work around the apparent compiler optimization/rewrite failure that we are
      seeing with the new toolchain/iOS SDKs provided with Xcode6 and iOS8.
    * Fix ALL the header guards.
    * Createed a with the LevelDB project description.
    * A new CONTRIBUTING file.
    * Don't implicitly convert uint64_t to size_t or int.  Either preserve it as
      uint64_t, or explicitly cast. This fixes MSVC warnings about possible value
      truncation when compiling this code in Chromium.
    * Added a DumpFile() library function that encapsulates the guts of the
      "leveldbutil dump" command. This will allow clients to dump
      data to their log files instead of stdout. It will also allow clients to
      supply their own environment.
    * leveldb: Remove unused function 'ConsumeChar'.
    * leveldbutil: Remove unused member variables from WriteBatchItemPrinter.
    * OpenBSD, NetBSD and DragonflyBSD have _LITTLE_ENDIAN, so define
      PLATFORM_IS_LITTLE_ENDIAN like on FreeBSD. This fixes:
       * issue #143
       * issue #198
       * issue #249
    * Switch from <cstdatomic> to <atomic>. The former never made it into the
      standard and doesn't exist in modern gcc versions at all.  The later contains
      everything that leveldb was using from the former.
      This problem was noticed when porting to Portable Native Client where no memory
      barrier is defined.  The fact that <cstdatomic> is missing normally goes
      unnoticed since memory barriers are defined for most architectures.
    * Make Hash() treat its input as unsigned.  Before this change LevelDB files
      from platforms with different signedness of char were not compatible. This
      change fixes: issue #243
    * Verify checksums of index/meta/filter blocks when paranoid_checks set.
    * Invoke all tools for iOS with xcrun. (This was causing problems with the new
      XCode 5.1.1 image on pulse.)
    * include <sys/stat.h> only once, and fix the following linter warning:
      "Found C system header after C++ system header"
    * When encountering a corrupted table file, return Status::Corruption instead of
    * Support cygwin as build platform, patch is from
    * Fix typo, merge patch from
    * Fix typos and comments, and address the following two issues:
      * issue #166
      * issue #241
    * Add missing db synchronize after "fillseq" in the benchmark.
    * Removed unused variable in SeekRandom: value (issue #201)
Commits on May 1, 2014
  1. @cmumford

    Release LevelDB 1.17

    cmumford authored
    - Cleanup: delete unused IntSetToString
      It was added in http://cr/19491949 (and was referenced at the time).
      The last reference was removed in http://cr/19507363.
      This fixes warning/error with pre-release crosstoolv18:
        'std::string leveldb::{anonymous}::IntSetToString(const std::set<long unsigned int>&)' defined but not used [-Werror=unused-function]
    - Added arm64 and and armv7s to IOS build as suggested on leveldb mailing list.
    - Changed local variable type from int to size_t
      This eliminates compiler warning/error and resolves
Commits on Feb 10, 2014
  1. Release LevelDB 1.16

    David Grogan authored
    - Make Log::Reader not report a corruption when the last record in a
      log file is truncated.
    - Fix issue 224: variable created but not utilized.
    - Remove comment that referenced a removed feature.
Commits on Dec 10, 2013
  1. Release LevelDB 1.15

    David Grogan authored
    - switched from mmap based writing to simpler stdio based writing. Has a
      minor impact (0.5 microseconds) on microbenchmarks for asynchronous
      writes. Synchronous writes speed up from 30ms to 10ms on linux/ext4.
      Should be much more reliable on diverse platforms.
    - compaction errors now immediately put the database into a read-only
      mode (until it is re-opened). As a downside, a disk going out of
      space and then space being created will require a re-open to recover
      from, whereas previously that would happen automatically. On the
      plus side, many corruption possibilities go away.
    - force the DB to enter an error-state so that all future writes fail
      when a synchronous log write succeeds but the sync fails.
    - repair now regenerates sstables that exhibit problems
    - fix issue 218 - Use native memory barriers on OSX
    - fix issue 212 - QNX build is broken
    - fix build on iOS with xcode 5
    - make tests compile and pass on windows
Commits on Sep 19, 2013
  1. Release LevelDB 1.14

    David Grogan authored
    Fix issues 200, 201
    * Fix link to bigtable paper in docs.
    * New sstables will have the file extension .ldb. .sst files will
    continue to be recognized.
    * When building for iOS, use xcrun to execute the compiler. This may
    affect issue 177.
Commits on Aug 21, 2013
  1. LevelDB 1.13

    David Grogan authored
    Fix issues 77, 87, 182, 190.
    Additionally, fix the bug described in
    where a large contiguous keyspace of deleted data was not getting
    Also fix a bug where options.max_open_files was not getting clamped
Commits on Jun 18, 2013
  1. Release leveldb 1.12

    David Grogan authored
    Non-functional changes only:
    1) Add Kevin Regan to the AUTHORS file
    2) Add standard license header to issues/
Commits on Jun 13, 2013
  1. Release leveldb 1.11

    David Grogan authored
    Fixes issues
    As well as the issue reported by about
    MissingSSTFile unit test failing on windows.
Commits on May 15, 2013
  1. Release leveldb 1.10

    David Grogan authored
    Fixes issues
    147 - thanks feniksgordonfreeman
    * Remove calls to exit(1).
    * Fix unused-variable warnings from clang.
    * Fix possible overflow error related to num_restart value >= (2^32/4).
    * Add leveldbutil to .gitignore.
    * Add better log messages when Write is stalled on a compaction.
Commits on Feb 7, 2013
  1. Make DB::Open fail if sst files are missing.

    David Grogan authored
    Also, cleanup for Clang's -Wimplicit-fallthrough warning.
Commits on Jan 7, 2013
Commits on Dec 27, 2012
  1. added utility to dump leveldb files

    Sanjay Ghemawat authored
Commits on Oct 16, 2012
  1. Small fixes.

    Sanjay Ghemawat authored
    * Fix shared library building.
    * Reorganize linking commands so flags like --as-needed can be passed.
    * C binding exports version numbers.
    * Fix small typos in documention.
Commits on Oct 12, 2012
  1. Update to leveldb 1.6

    David Grogan authored
    Mmap at most 1000 files on Posix to improve performance for large databases.
    Support for more architectures (thanks to Alexander K.)
    Building and porting
    HP/UX support (issue 126)
    AtomicPointer for ia64 (issue 123)
    Sparc v9 support (issue 124)
    Atomic ops for powerpc
    Use -fno-builtin-memcmp only when using g++
    Simplify IOS build rules (issue 114)
    Use CXXFLAGS instead of CFLAGS when invoking C++ compiler (issue 118)
    Fix snappy shared library problem (issue 94)
    Fix shared library installation path regression
    Endian-ness detection tweak for FreeBSD
    Bug fixes
    Stop ignoring FLAGS_open_files in db_bench
    Make bloom test behavior agnostic to endian-ness
    Limit number of mmapped files to 1000 to improve perf for large dbs
    Do not delay for 1 second on shutdown path (issue 125)
    Make InMemoryEnv return a no-op logger
    C binding now has a wrapper for free (issue 117)
    Add thread-safety annotations
    Added an in-process lock table (issue 120)
    Make RandomAccessFile and SequentialFile non-copyable
Commits on May 30, 2012
  1. update version number to 1.5

    Sanjay Ghemawat authored
  2. remove obsolete android port files

    Sanjay Ghemawat authored
  3. Remove static initializer; fix endian-ness detection; fix build on

    Sanjay Ghemawat authored
    various platforms; improve android port speed.
    Avoid static initializer by using a new portability interface for
    thread-safe lazy initialization.  Custom ports will need to be
    extended to implement InitOnce/OnceType/LEVELDB_ONCE_INIT.
    Fix endian-ness detection (fixes Powerpc builds).
    Build related fixes:
    - Support platforms that have unversioned shared libraries.
    - Fix IOS build rules.
    Android improvements
    - Speed up atomic pointers
    - Share more code with port_posix.
    Do not spin in a tight loop attempting compactions if the file system
    is inaccessible (e.g., if kerberos tickets have expired or if it is out
    of space).
Commits on Apr 17, 2012
  1. Added bloom filter support.

    Sanjay Ghemawat authored
    In particular, we add a new FilterPolicy class.  An instance
    of this class can be supplied in Options when opening a
    database.  If supplied, the instance is used to generate
    summaries of keys (e.g., a bloom filter) which are placed in
    sstables.  These summaries are consulted by DB::Get() so we
    can avoid reading sstable blocks that are guaranteed to not
    contain the key we are looking for.
    This change provides one implementation of FilterPolicy
    based on bloom filters.
    Other changes:
    - Updated version number to 1.4.
    - Some build tweaks.
    - C binding for CompactRange.
    - A few more benchmarks: deleteseq, deleterandom, readmissing, seekrandom.
    - Minor .gitignore update.
Commits on Mar 30, 2012
Commits on Mar 21, 2012
  1. Build fixes and cleanups:

    Sanjay Ghemawat authored
    (1) Separate out C++ and CC flags (fixes c_test compilation)
    (2) Move snappy/perftools detection to script
    (3) Fix db_bench_sqlite3 and db_bench_tree_db build rules
Commits on Mar 15, 2012
Commits on Mar 9, 2012
  1. fix LOCK file deletion to prevent crash on windows

    Sanjay Ghemawat authored
  2. added group commit; drastically speeds up mult-threaded synchronous w…

    Sanjay Ghemawat authored
    …rite workloads
Commits on Mar 5, 2012
  1. add .gitignore; support for building on a few BSD variants

    Sanjay Ghemawat authored
Commits on Feb 2, 2012
  1. avoid very large compactions; fix build on Linux

    Sanjay Ghemawat authored
Commits on Jan 25, 2012
  1. fixed issues 66 (leaking files on disk error) and 68 (no sync of CURR…

    Sanjay Ghemawat authored
    …ENT file)
Commits on Nov 30, 2011
  1. Makefile fixes for systems with $CXX other than g++.

    Hans Wennborg authored
    - Makefile: Use $(CXX) for compiling C++ files,
      don't override the environment's value of $CXX
    - build_detect_platform: use $CXX instead of g++.
    Based on bug report from Theo Schlossnagle:
    (Sync with uptream at 25807040.)
Commits on Nov 14, 2011
  1. Pass system's CFLAGS, remove exit time destructor, sstable bug fix.

    Hans Wennborg authored
    - Pass system's values of CFLAGS,LDFLAGS.
      Don't override OPT if it's already set.
      Original patch by Alessio Treglia <>:
    - Remove 1 exit time destructor from leveldb.
    - Fix problem where sstable building code would pass an
      internal key to the user comparator.
    (Sync with uptream at 25436817.)
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