changelog

开源的数据库管理系统

	* gdbm.3: updated to reflect new routines and changes.

Sat Oct 30 05:20:45 1993  Jason Downs  ([e-mail])

        * testgdbm.c: Added support for bucket cache and block sizes,
	  adding -c, -b and -g flags. Must use -g to specify the file
          name, now.

	* bucket.c, gdbmopen.c, gdbmclose.c, gdbmreorg.c, update.c,
	  gdbmconst.h, gdbmdefs.h: Implemented dynamic, delayed
	  initialization, bucket cache. New routine: _gdbm_init_cache().

	* proto.h, gdbmerrno.c, gdbmerrno.h: Added gdbm_setopt() errors
	  and prototypes.

	* gdbmsetopt.c: New file, implements the gdbm_setopt() routine.

	* testgdbm.c, testndbm.c, testdbm.c, conv2gdbm.c: cleaned up
	  compiler warnings.

	* update.c: repaired declarations and added prototypes for
	  static routines, repaired declaration of _gdbm_fatal().

	* falloc.c: repaired declarations and added prototypes for
	  static routines.

	* gdbmstore.c: commented out unsed variables in gdbm_store().

	* proto.h: added prototypes for _gdbm_read_entry(),
	  _gdbm_find_key(), and gdbm_sync().

	* bucket.c, proto.h: changed _gdbm_get_bucket() and
	  _gdbm_write_bucket() over to type void.

Sat Oct 30 00:56:24 1993  Jason Downs  ([e-mail])

	* gdbmerrno.c, gdbmexists.c, close.c, dbmrdonly.c: New files,
	  adding the routines gdbm_strerror(), gdbm_exists(), and for
	  better compatibility with the old dbm/ndbm libraries, the
	  dbmclose() and dbm_rdonly() routines.

	* various headers: Added prototypes for the new routines, and
	  rearranged how gdbm.h is generated.

Fri Oct 29 07:02:41 1993  Jason Downs  ([e-mail])

	* README: split into README, INSTALL, and NEWS.  INSTALL
	  includes more tips on compiling.  NEWS contains the 'short form'
	  ChangeLog.
	
	* Makefile.in, configure.in: Redid parts of the autoconf
	  stuff, and repaired many bugs.

	* systems.h: Repaired the alloca declarations, among other
	  things.

	* various source files: changed all relevant usage of type
	  'long' to type 'word_t', which will always be 32bits wide.
	  'word_t' is defined in systems.h.

Fri Jul 30 13:27:24 1993  Phil Nelson  ([e-mail])

	* findkey.c: Added a check of elem_loc == -1 in determining if
	  the data cache held the item being looked for.

Tue Jul 20 13:08:47 1993  Phil Nelson  (phil at cs.wwu.edu)

	* gdbm.texinfo: Fixed some errors.

	* Makefile.in: Fixed some errors.

 	* version.c: Set version to 1.6 for release.

Mon Jul 19 15:02:40 1993  Phil Nelson  (phil at cs.wwu.edu)

	* COPYING: Replaced Version 1 with Version 2.  Also updated
	  all file notices to refer to version 2.

	* gdbm.texinfo: Updated the documentation.

	* README: Updated to current version.

	* Makefile: updated clean and install.

Wed Jul 14 13:37:44 1993  Phil Nelson  (phil at cs.wwu.edu)

	* Makfile.in: Added samp1.cc to the list of distributed files.

Sat Jun  5 21:35:59 1993  Phil Nelson  (phil at cs.wwu.edu)

	* gdbm.proto, Makefile.in: Added #ifndef _GDBM_H_ protection
	  for the final gdbm.h file.  Also added prototypes and C++
	  support.

	* gdbmseq.c: Added gdbm_errno initialization to gdbm_nextkey.

	* gdbmerrno.h and others: Moved the extern definition of
	  gdbm_erron to gdbmerrno.h from the other files.

Mon May 17 12:32:02 1993  Phil Nelson  (phil at cs.wwu.edu)

	* gdbm.proto: Added GDBM_FAST to the read_write flags.

Sun May 16 12:50:01 1993  Phil Nelson  (phil at cs.wwu.edu)

	* configure.in, Makefile.in: Added autoconf configuration
	  to gdbm.

Tue Mar 30 00:08:48 1993  Phil Nelson  (phil at cs.wwu.edu)

	* global.c: Set gdbm_errno to GDBM_NO_ERROR to force
	  it into the data segment.

Sun Mar 28 22:51:40 1993  Phil Nelson  (phil at cs.wwu.edu)

	* gdbmfetch.c: Set return_val.dsize to 0 as a default return
	  value.  (I was told that was more compatible with dbm/ndbm.)

	* gdbmopen.c: Changed a "sizeof(int)" to "sizeof(long)".

	* testgdbm.c: Changed "char opt" to "int opt" to make sure
	  opt can be -1.

	* hash.c: Added "unsigned" to declaration of value for
	  better overflow operation.

	* gdbmreorg.c: Added a free for data.dptr in the main loop.
	  Also changed the malloc for new_name to an alloca.
	  Removed all frees on new_name.

Sat Mar 27 23:25:14 1993  Phil Nelson  (phil at cs.wwu.edu)

	* gdbmconst.h, gdbmdefs.h, gdbmopen.c, gdbmreorg.c,
	  testgdbm.c, update.c, gdbm.h: Added code to allow for a
	  GDBM_FAST mode in which fsync is not called during
	  database update mode. Added a new flag "-f" to 
	  testgdbm to make use of the new fast mode.

	* gdbmsync.c: Added this function to allow a programmer
	  to use the GDBM_FAST mode but still be able to sync
	  a database.

	* gdbmopen.c, gdbmdelete.c, gdbmfetch.c, gdbmseq.c, gdbmstore.c,
	  gdbmreorg.c: Added initialization of gdbm_errno to GDBM_NO_ERROR.

Mon Mar 22 23:03:36 1993  Phil Nelson  (phil at cs.wwu.edu)

	* gdbmclose.c: (gdbmclose) Added a fsync before close to make
	  sure the file is written to disk before continuing.

Sun Mar 21 21:33:31 1993  Phil Nelson  (phil at cs.wwu.edu)

	* proto.h: Added this as a new file.  It adds ANSI prototypes
	  for ANSI compilers.

	* gdbmdefs.h: Added an include of proto.h.

	* Makefile: Added proper references to proto.h

	* gdbmopen.c: Changed (int *) casts to (long *) and added
	  an initialization to dbf->header.

	* gdbmreorg.c: Added an "end update" on the new database and
	  correctly set up the bucket cache.

	* update.c: (_gdbm_end_update) Added type void to header.

Wed Mar 17 19:14:27 1993  Phil Nelson  (phil at cs.wwu.edu)

	* Changed copyright on all files to include 1993.  Also deleted
	  all references to my phone number.

Thu Feb 28 17:05:09 1991  Phil Nelson  (phil at strawberry.cs.wwu.edu)

	* Added 1991 to copyright lines on all files.

	* gdbmfetch.c: Fixed a bug introduced by previous changes.

	* version.c:  Updated version to 1.5.

Fri Feb  8 12:27:13 1991  Phil Nelson  (phil at strawberry.cs.wwu.edu)

	* Change author's e-mail address in all comments.

	* gdbmopen.c, systems.h: Changed opening sequence so that a
	  database will not be truncated in NEWDB mode until the
	  write has locked the file.

	* testgdbm.c: Fixed a bug that caused a segmentation fault on
	  one computer.  Also added the flags "-r" for opening the
	  database as a READER and "-n" for opening the database as
	  a NEWDB writer.  The default mode remains the WRCREAT mode.

	* Various source files, changed the data types of various
	  variables from int to long.  This should not make any difference
	  to systems where sizeof(int) = sizeof(long).  It should make
	  it easier to move to other systems.

	* gdbmstore.c: Added a check for NULL key or content dptr.  Due to
	  NULLs being used as error indications, data cannot be NULL also.

	* gdbmfetch.c, gdbmseq.c, fetch.c: Added checks for zero sized
	  key and content so malloc will not try to allocate zero bytes.

        * gdbmconst.h: Added this file so that all constants are in one
	  central place.  A few constants can be changed without changing
	  the header sizes.

Tue Aug 14 13:08:43 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* Version 1.4 released.  (version.c: Updated to correct version.)

	* Makefile: Added $(LIBS) to link for conv2gdbm.

	* README: Updated to version 1.4 and added a 1.0-1.4 change
	  statement.

Wed Aug  8 16:57:29 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* gdbmopen.c: Restructured some code to initialize dbf
	  more completely.

	* dbm.h: Added a null define to satisfy some versions that
	  require a dbmclose() call.

	* findkey.c: (_gdbm_findkey) Added a check for the NULL
	  pointer in ...ca_data.dptr.

	* gdbmdelete.c: Added code to more completely remove the
	  cache entry for a deleted item.

	* gdbmreorg.c: Added code to finish the transfer of information
	  from the new_dbf to the orginal dbf.

Fri May 30 08:29:16 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* gdbmstore.c: Changed a strncpy to bcopy.

Tue May 15 09:55:21 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* Version 1.3 released.

	* systems.h: Changed the defines for alloca to use the
	  name builtin_alloca to depend on BUILTIN_ALLOCA instead
	  of __GNUC__.  Added a definition of BUILTIN_ALLOCA for
	  GNUC and for sun sparc.

Fri May 11 12:15:56 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* systems.h: Removed the include for <sys/types> and now
	  systems.h requires <sys/types> included before it.

	* Makefile: Corrected the makefile to include a file that
	  was missing before.  Also, switched order of conv2gdbm
	  and alldbm in the all option.

	* findkey.c (_gdbm_read_entry): Reordered some statements
	  to make the code more readable.

	* update.c (_gdbm_fatal): Changed fatal message from "dbm fatal:"
	  to "gdbm fatal:".

Mon Apr 30 10:18:24 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* Version 1.2 released.

Fri Apr 27 09:49:59 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* Makefile: Added the dist option.  Similar to the 
	  addition from [e-mail], but correct.

	* falloc.c (push_avail_block):  Change the avail count
	  to reflect the correct number of entries.

	* dbminit.c (dbminit): Changed the stat call to stat the
	  ".dir" file as is done in dbmopen.c (dbm_open).

Tue Apr 10 12:18:40 1990  Phil Nelson  (phil at unicorn.wwu.edu)

	* Version 1.1. released.

	* gdbmopen.c (gdbm_open): Clear out bucket cache.