create_core should wait for the child to be done writing the core

[m6w6/libmemcached] / ChangeLog

  * We removed the MEMCACHED_BEHAVIOR_KETAMA_COMPAT_MODE added in 0.35. Instead use
    memcached_behavior_set_distribution().

0.35 Mon Nov  9 11:18:33 PST 2009
  * Added support for by_key operations for inc/dec methods.
  * Added mget test to memslap.
  * Support for compatible ketama for SpyMemcached
  * Update C++ interface.
  * Fix for memcp

0.34 Tue Oct 13 08:39:51 PDT 2009
  * Added support for setting behavior flags on a connection pool.
  * Don't increment server_failure_counter on normal disconnects.
  * Added prototype for a callback based protocol parser (server side)
    with examples so that you could let your own application speak the
    memcached protocol
  * Updated memcapable to test ASCII protocol.
  * Changed behavior so that server can be removed at first sign of failure.
  * Added memcached_server_get_last_disconnect() call

0.33 Wed Sep 23 10:11:58 PDT 2009
  * Added memcapable to test servers for binary compatibility.
  * Updated C++ interface. Added basic support for C++ exceptions. Added 
    multiple constructors the memcached client object. The C++ interface
    now takes parameters which are C++ types (such as std::string).
  * Several bug fixes for binary protocol support.
  * Fixed crashing issue with dumping from memcachd server (server internals
    were changed without documenting change).

0.32 Tue Sep 15 15:49:09 PDT 2009
  * Change of behavior where linger is only modified for no-block and then
    it is set to zero.
  * Added Twitter's memcached_server_error() functions.
  * Fix for OSX compiles in development builds.
  * Updated C++ interface.
  * Updated memcached_mget and memcached_mget_by_key to take a size_t 
    as a parameter instead of an unsigned int for number_of_keys.

0.31 Fri Jul 10 09:02:50 PDT 2009
  * Added support or HA via replication.
  * malloc() removed for server key usage.
  * Update build system.
  * Added support for memcached_set_memory_allocators().
  * Fixed bug in configure.ac for have_htoll.

0.30 Sun May 31 17:31:52 PDT 2009
  * Added memcachd_dump command (and framework for memdump tool).
  * Realigned all structures to remove padding (and line up important bits for 64bit caches.
  * Remove some of sprintf() in storage calls().
  * Removed printf() in stat call for unknown stat member.
  * memcached_generate_hash() function added.
  * Added tests to make sure all hash functions are stable.

0.29 Tue May 19 08:26:48 PDT 2009
  * Fixed malloc usage to calloc for spots where we need zero filled memory. 
  * All code warnings now treated as errors.
  * Fixes for debian packaging.
  * Added new pooling mechanism.
  * MEMCACHED_BEHAVIOR_NO_BLOCK no longer also sets MEMCACHED_BEHAVIOR_BUFFER_REQUESTS.
  * Updated generic rpm.

0.28 Tue Apr 14 18:56:28 PDT 2009
  * Fixed bug in init sructure (reapplied)
  * Fixed bug in get/set by key (nikkhils@gmail.com)

0.27 Sun Mar 29 22:33:01 PDT 2009
  * Added new UDP fire-forget mode.
  * Reworked performance for mget() to better make use of async protocol
  * Cleaned up execution of fetch (just one set of code now)
  * Fixed Jenkin's for big endian hosts.
  * Updates for memstat to determine network latency.
  * Updates for binary protocol.
  * Many updates to documentation.

0.26 Thu Jan 29 13:05:50 PST 2009
  * Fix for decrement on hash key
  * Fixed assert that was catching bad memset() call in host_reset()
  * Fix purge issue for blocked IO which has been stacked.

0.25 Fri Nov 28 09:59:35 PST 2008
  * Jenkins HASH added.
  * Update of Murmur hash code
  * Support explicit weights (Robey Pointer, Evan Weaver)
  * Bugfix for ketama continuum (Robey Pointer)
  * New behavior MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY (Robey Pointer)
  * Don't ever call stats for weighting servers, because it is unstable.

0.24 Tue Sep 16 02:59:03 PDT 2008 (never released)
  * Cleanup compile warnings.
  * Fix issues in partitioning by keys.
  * Fixed "fail case" to make sure when calling memcached_clone() no
    memcached_st is over written.
  * New memcached_server_by_key() method for finding a server from 
    a key.
  * memcached_server_free() was added for freeing server structures.
    

0.23 Sun Sep  7 08:13:59 PDT 2008
  * Added strings.h header for Solaris 9
  * Solaris 64bit fix.
  * Support for weighted Ketama from Yin Chen.
  * Fix for Chinese 
  * Fix for 0 length key to trigger bad key.
  * Added behaviors MEMCACHED_BEHAVIOR_SND_TIMEOUT, MEMCACHED_BEHAVIOR_RCV_TIMEOUT
  * Support for Binary Protocol added

0.22 Mon Jul 14 09:24:11 PDT 2008
  * Fix where master key was no being checked for "bad key"
  * Fixed bugs in stats output (thread output was wrong)
  * Clarified MEMCACHED_BAD_KEY_PROVIDED is return for bad prefix key.
  * Found a bug in Flags return (Jacek Ostrowski)
  * Fixed issue with compiling on Visual Studio

0.21 Fri May 23 18:34:09 PDT 2008
  * Change of char * to const char * for all key based functions.
  * New  MEMCACHED_CALLBACK_PREFIX_KEY added. You can now create domains for
    values.
  * Fixed bug introducd in last version on memcp
  * Fix for death of file io to call shutdown()

0.20 Mon May  5 08:34:26 PDT 2008
  * New consistent distribution tests.
  * Found a memory leak when a server constantly fails.
  * Fix in watchpoint macro
  * Changed default timeout to 1 second for poll timeouts
  * Wheel uses less memory/dynamic allocation for size (no longer limited to
    512 hosts by default.
  * memslap memory leak fix
  * Added Ketama distribution
  * Fix assert.h compile problem on CentOS

0.19 Wed Apr  9 09:30:53 PDT 2008
  * Documentation fix in libmemcached.
  * Fixed bug where sort was always occuring on hosts
  * Logic fix in branch prediction (thanks Jay!)
  * Read through cached support.
  * Fixed for cas by key operation.
  * Fix for memcached_server_st list structures to have correct count.
  * Added callback MEMCACHED_CALLBACK_DELETE_TRIGGER
  * Removed function call in favor of macro (aka cut out some instructions)


0.18 Sun Mar 16 21:57:55 PDT 2008
  * Fix plus tests for non-zero value objects and flags.
  * MEMCACHED_HASH_MURMUR added for murmur algorithm provided.
  * MEMCACHED_BEHAVIOR_RETRY_TIMEOUT added to keep connecting from looping
    on timeout.
  * gcc branch prediction optimizations
  * Refactored entire tree to make include files cleaner
  * Fixed leaked socket.

0.17 Wed Feb 27 03:33:29 PST 2008
  * MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT added for connect timeout in
    non-block mode.
  * Incompatible change in memcached_behavior_set() api. We now use a 
    uint64_t, instead of a pointer.
  * Fix for storage of values for zero.
  * memcached_server_cursor() function added to API for cycling through servers.

0.16 Mon Feb 18 00:30:25 PST 2008
  * Work on the UDP protocol
  * Added get_by_key, set_by_key tests for C++ API
  * Fix for limit_maxbytes to be 64bit in stats
  * Added Atom Smasher test (scale baby, scale!)
  * Servers are now sorted, meaning that servers are now ordered so that
    clients with the same lists, will have same distribution. (Idea from
    Ross McFarland). MEMCACHED_BEHAVIOR_SORT_HOSTS was added to enable
    this support.
  * Added MEMCACHED_BAD_KEY_PROVIDED error for auto, set, and get operations.
    MEMCACHED_BEHAVIOR_VERIFY_KEY was added to enable this feature.
  * More error messages on command line tools.
  * Fixed bugs in memcached_cas() operator.
  * Fix to loop through interfaces
  
0.15 Tue Jan 29 14:55:44 PST 2008
  * More work on the C++ API.
  * Bug fixes around block corner cases.
  * Slight performance increase in both read() and write().

0.14 Tue Jan 22 06:21:49 PST 2008
  * For for bug found by Evan Weaver where increment() was not returning
    propper error of value was not found.
  * Fix for bad null pointer on flag by Toru Maesaka.
  * Refactor of all IO to just pass in the active server
  * Problem configuring (PKG_CHECK_MODULES) fixed by removal of "rpath" in 
    support/libmemcached.pc.in (Thanks to Ross McFarland).
  * Added memcached_callback_get()/set()
  * First prototype of C++ interface
  * Updated docs for uint16_t changes in previous release

0.13 Sun Jan 13 06:51:50 PST 2008
  * MEMCACHED_BEHAVIOR_USER_DATA added to store user pointer.
  * Fix for failure to connect to invalidate socket.
  * Patch from Marc Rossi to add --hash option for memcp, memrm, and memcat.
  * Kevin's patch for fixing EOF issues during a read.
  * Toru Maesaka patch for stats mismatch
  * Fix for when CRC return 0
  * Fixed uint16_t issues around flags. Turns out the documentation on the
    protocol was wrong.
  * Lingering socket fixes for FreeBSD.
  * Patches from Kevin Dalley for FreeBSD 4.0
  * Added multi delete functions.
  * All get key returns have C style null termination
  * If memcached_server_list_append is passed NULLs instead of pointers it
    returns NULL.  
  * Added memcached_fetch_execute() method
  * Found a bug where memcached_fetch() was not null terminating the result
    value.
  * memcached_behavior() now has the ability to set "buffering" so that
    data is not automatically flushed.
  * Behavior change, buffered commands now return MEMCACHED_BUFFERED

0.12 Tue Dec 11 15:20:55 PST 2007
  * Updates for consistent hashing
  * IPV6 support
  * Static allocation for hostname (performance)
  * Fixed bug where in non-block mode all data might not have been sent on
    close().
  * Refactor of memcached_get() to use common code.
  * Change in value fetch, MEMCACHED_END is now returned when keys are no
    longer in the pipe.
  * Fixed bug where key could be out of range of characters
  * Added _by_key() methods to allow partitioning of values to particular
    servers.
  * MEMCACHED_DEFAILT_TIMEOUT is now set to a non -1 value.
  * Performance improvements in get operations.

0.11 Mon Nov 26 01:05:52 PST 2007
  * Added option to memcache_behavior_set() so that poll() can be timed out.
  * Fixed memory leak in case of using memcached_fetch_result() where no
    value was returned.
  * Bug fixed in memcached_connect() which would cause servers that 
    did not need to be enabled to be enabled (performance issue).
  * Rewrote bounds checking code for get calls.
  * "make test" now starts its own memcached servers.
  * Added Hseih hash (MEMCACHED_HASH_HSIEH), which is showing about 7%
    performance over standard hash.

0.10 Tue Nov 20 23:22:31 PST 2007
  * Added append binary test.
  * Added MEMCACHED_BEHAVIOR_CACHE_LOOKUPS behavior so that you can save on
    multiple DNS lookups.
  * Added CAS support, though this is optional and must be enabled during
    runtime.
  * Added the utility memerror to create human readable error strings
    from memcached errors (aka convert ints to strings)
  * Fixed type in MEMCACHED_HOST_LOOKUP_FAILURE
  * Fixed bug where hostname might not be null terminated
  * Moved to using gethostbyname_r() on Linux to solve thread safety issue
  * Added -rpath support for pkg-config
  * Documentation fix for hash setting using memcached_behavior_set()

0.9 Thu Nov 15 07:44:00 PST 2007
  * fix for when no servers are definied.
  * different buffers are now kept for different connections to
    speed up async efforts
  * Modified increment/decrement functions to return uint64_t values
  * Fixed bug in cases where zero length keys were provided
  * Thread cleanup issue in memslap
  * No hostname lookup on reconnect
  * Fix for flag settings (was doing hex by accident!)
  * Support for 1.2.4 server additions "prepend" and "append" added.
  * Added memcached_version()... not sure if I will make this public 
    or not.

0.8 Mon Nov  5 10:40:41 PST 2007
  * Adding support for CRC hash method 
  * Adding support for UNIX sockets
  * Added additional HASHing methods of FNV1_64,FNV1A_64, FNV1_32, FNV1A_32
  * Added pkgconfig support (PKG_CHECK_MODULES)
  * Fixed conflict with defined type in MySQL
  * Added memcached_result_st structure and functions to manipulate it.

0.7 Tue Oct 30 09:24:05 PDT 2007
  * Poved to poll() from select()
  * Fixes in internal string class for allocation of large numbers of
    strings.
  * memcached_mget() function now sends keys as it parses them instead of
    building strings as it goes.
  * Propper flush now for making sure we get all IO sent even when in
    non-block mode.
  * Added --enable-debug rule for configure
  * All asserts() removed (hey this is going into production!)


0.6 Wed Oct 17 08:41:35 PDT 2007
  * get value returns are now null terminated (request by Cal Heldenbrand) 
  * Fixed connections for more hosts then two.
  * Rewrite of the read/write IO systems to handle different sorts of host
    failures.
  * Added man pages for all functions and tools
  * Raised buffer size for readinng/writing to 16K
  * You can now optionally set the socket size for recv/send via 
    memached_behavior_set/get.

0.5 Tue Oct  9 00:22:25 PDT 2007
 * Ruby maintainer mentioned TCP_NODELAY patch he had added. Added this to C
   library as well. (Eric Hodel drbrain@segment7.net)
  * Added support script for set_benchmark
  * Updated memslap to allow testing of TCP_NODELAY
  * Updated memslap to support --flush (aka dump memcache servers before
    testing)
  * Fixed bug in multiple hosts not being activated
  * Added environmental variable MEMCACHED_SERVERS which can be used to 
    set the servers list.
  * fixed memcached_stat method (and now memstat works)
  * server connect now happens on demand.
  * Help for all command line applications

0.4 Wed Oct  3 10:28:50 PDT 2007
  * Added buffered IO to write calls for keys
  * Added buffered IO for reads
  * memstat was broken (bad if/else on connect)
  * New non-blocking IO (not default yet). Mucho faster
  * Refactor of test system.
  * memslap crash solved

0.3 Mon Oct  1 06:37:52 PDT 2007
  * Jeff Fisher <guppy@techmonkeys.org> provided a spec file
  * Added "make rpm" around dist file
  * Added support for Solaris
  * Added support for DTrace
  * Fixed read to be recv and write to be send
  * Bug fix where memstat would core if no server was found
  * Added memslap tool (load generator)
  * Numerous bug fixes in library
  * Added calls to library for creating host lists (see
    text cases to understand how to use this).

0.2 Thu Sep 27 03:46:57 PDT 2007
  * First public version