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#Release Change Log

##v1.6.0 (2016-04-07)

  • lmdb: method Txn.ID() exposing mdb_txn_id. (#47)
  • lmdb: Env.ReaderList() returns an error if passed a nil function. (#48)
  • lmdbsync: realistic test of resizing functionality (#7)
  • lmdbsync: use context.Context instead of a hand-rolled Bag (#51)
  • lmdbsync: Handler Env is now an argument instead of a context value (#52)
  • lmdbsync: Changes to MapResizedHandler and its default values (#54)
  • lmdb: Fix CGO argument check panic for certain []byte values produced from a bytes.Buffer (#56)
  • lmdb: Support building the C library with support for the pwritev(2) system call (#58)
  • lmdb: Reuse MDB_val values within transactions to reduce allocations in transactions issuing multiple Get operations (#61).
  • lmdb: Avoid allocation and linear scan overhead on the cgo boundary for transaction operations (Get/Put and variants) (#63).
  • lmdb: Use a more portable internal conversion from C pointers to slices (#67).

##v1.5.0

  • lmdb: fix crash from bad interaction with Txn finalizer and Txn.Reset/.Renew.
  • lmdb: Update the LMDB C library to 0.9.18
    Fix robust mutex detection on glibc 2.10-11 (ITS#8330)
    Fix page_search_root assert on FreeDB (ITS#8336)
    Fix MDB_APPENDDUP vs. rewrite(single item) (ITS#8334)
    Fix mdb_copy of large files on Windows
    Fix subcursor move after delete (ITS#8355)
    Fix mdb_midl_shirnk off-by-one (ITS#8363)
    Check for utf8_to_utf16 failures (ITS#7992)
    Catch strdup failure in mdb_dbi_open
    Build
        Additional makefile var tweaks (ITS#8169)
    Documentation
        Add Getting Started page
        Update WRITEMAP description

##v1.4.0

  • development: The LMDB C library can be cloned under /lmdb -- it will be ignored.
  • lmdb: Pass CFLAGS -Wno-format-extra-args to silence compilation warning (OS X).
  • lmdb: Update the LMDB C library to 0.9.17
    Fix ITS#7377 catch calloc failure
    Fix ITS#8237 regression from ITS#7589
    Fix ITS#8238 page_split for DUPFIXED pages
    Fix ITS#8221 MDB_PAGE_FULL on delete/rebalance
    Fix ITS#8258 rebalance/split assert
    Fix ITS#8263 cursor_put cursor tracking
    Fix ITS#8264 cursor_del cursor tracking
    Fix ITS#8310 cursor_del cursor tracking
    Fix ITS#8299 mdb_del cursor tracking
    Fix ITS#8300 mdb_del cursor tracking
    Fix ITS#8304 mdb_del cursor tracking
    Fix ITS#7771 fakepage cursor tracking
    Fix ITS#7789 ensure mapsize >= pages in use
    Fix ITS#7971 mdb_txn_renew0() new reader slots
    Fix ITS#7969 use __sync_synchronize on non-x86
    Fix ITS#8311 page_split from update_key
    Fix ITS#8312 loose pages in nested txn
    Fix ITS#8313 mdb_rebalance dummy cursor
    Fix ITS#8315 dirty_room in nested txn
    Fix ITS#8323 dirty_list in nested txn
    Fix ITS#8316 page_merge cursor tracking
    Fix ITS#8321 cursor tracking
    Fix ITS#8319 mdb_load error messages
    Fix ITS#8320 mdb_load plaintext input
    Added mdb_txn_id() (ITS#7994)
    Added robust mutex support
    Miscellaneous cleanup/simplification
    Build
        Create install dirs if needed (ITS#8256)
        Fix ThreadProc decl on Win32/MSVC (ITS#8270)
        Added ssize_t typedef for MSVC (ITS#8067)
        Use ANSI apis on Windows (ITS#8069)
        Use O_SYNC if O_DSYNC,MDB_DSYNC are not defined (ITS#7209)
        Allow passing AR to make (ITS#8168)
        Allow passing mandir to make install (ITS#8169)

##v1.3.0

  • all: Builds on Windows with passing tests. Fixes #33.
  • lmdb: Cursor.DBI returns "invalid" DBI if the cursor is closed. Fixes #31.
  • lmdb: Finalizers to prevent resource leaks. Fixes #20.
  • all: Internal test package for setting up, populating, and tearing down environments.
  • lmdbscan: Fix panic in Scanner.Scan after Txn.OpenCursor fails. Fixes #21.
  • lmdbscan: Scanner.Set[Next] methods move the cursor and make the next Scanner.Scan a noop. The changes should be backwards compatible. Fixes #17.
  • lmdb: Cgo calling convention meets rules set forth for go1.6. Fixes #10.
  • lmdb: add a "Package" code example that shows a complete workflow

##v1.2.0

  • Many example tests replaced with simpler code examples.
  • Lots of documentation fixes
  • internal/lmdbcmd: simplify version printing
  • lmdbscan: add method Scanner.Cursor() to deprecate Scanner.Del()
  • lmdbscan: add tests for Scanner.Set and Scanner.SetNext
  • lmdb: Implement Env.FD() method returning an open file descriptor
  • lmdbgo.c: remove unnecessary #include <string.h>

##v1.1.1

  • Lots of code examples.
  • Lots of tests.
  • Travis-CI enforcing code style using golint
  • exp/lmdbscan: removed the scanner.Func type because it was unnecessary bloat.
  • exp/lmdbsync: Tweak lmdbsync.HandlerChain semantics
  • exp/lmdbsync: Rename type RetryTxn to ErrTxnRetry
  • Move exp/cmd/lmdb_stat to path cmd/lmdb_stat because its purpose is know and it is essentially complete.
  • Move exp/cmd/lmdb_copy to path cmd/lmdb_stat because its purpose is know and it is essentially complete.
  • Add method Env.ReaderList using C shim.
  • exp/lmdbsync: Simplified interface and behavior after tests.
  • exp/lmdbsync: No longer restrict implementations of lmdbsync.Bag with an unexported method.
  • exp/lmdbsync: Do not let users call Env.BeginTxn because it is unsynchronized.
  • lmdb: methods Env.CopyFD and Env.CopyFDFlags
  • lmdb: clean up Multi.Vals by using Multi.Val internally
  • exp/lmdbsync: clean up lmdbsync.MapFullHandler and lmdbsync.MapResizedHandler godoc.
  • exp/lmdbsync: document possible deadlocks with MapFullHandler and MapResizedHandler
  • exp/cmp/lmdb_example_resize: simple program that auto-resizes a database
  • exp/lmdbsync: fix infinite loop
  • README.md: link fixes