diff options
author | Ulrich Drepper <drepper@redhat.com> | 1997-09-30 17:10:40 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-09-30 17:10:40 +0000 |
commit | a5a0310d8e9d7176bb17e91c916272006a871016 (patch) | |
tree | b922b764878596e6ee42ae84cc315ecaaac00505 /db2/btree/bt_cursor.c | |
parent | a2b08ee54130cf3a74655856e6ca6c29874a9df2 (diff) | |
download | glibc-a5a0310d8e9d7176bb17e91c916272006a871016.tar.gz glibc-a5a0310d8e9d7176bb17e91c916272006a871016.tar.xz glibc-a5a0310d8e9d7176bb17e91c916272006a871016.zip |
Update. cvs/libc-ud-970930
1997-09-30 18:03 Ulrich Drepper <drepper@cygnus.com> * Makerules: Undo last change. * csu/Makefile: Define before-compile at the right place. * aclocal.m4: Remove a.out file created by assembler test. * set-init.c: Find set-hooks.h using <...>. Update to db 2.3.10. * db2/Makefile: Update. * db2/db.h: Likewise. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/btree/bt_close.c: Likewise. * db2/btree/bt_conv.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/btree.src: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/clib/getlong.c: Likewise. * db2/db/db.c: Likewise. * db2/db/db_auto.c: Likewise. * db2/db/db_conv.c: Likewise. * db2/db/db_pr.c: Likewise. * db2/db/db_ret.c: Likewise. * db2/db/db_thread.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/hash/hash_conv.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_func.c: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/include/btree.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_185.h.src: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/db_page.h: Likewise. * db2/include/db_shash.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/log.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp.h: Likewise. * db2/include/shqueue.h: Likewise. * db2/include/txn.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_register.c: Likewise. * db2/mp/mp_bh.c: Likewise. * db2/mp/mp_fget.c: Likewise. * db2/mp/mp_fopen.c: Likewise. * db2/mp/mp_fput.c: Likewise. * db2/mp/mp_fset.c: Likewise. * db2/mp/mp_open.c: Likewise. * db2/mutex/mutex.c: Likewise. * db2/os/db_os_dir.c: Likewise. * db2/progs/db_checkpoint/db_checkpoint.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump185/db_dump185.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn_auto.c: Likewise. * elf/link.h: Define struct libname_list outside struct link_map to not confuse C++ compilers. * include/features.h: Recognize _XOPEN_SOURCE == 500 and set __USE_UNIX98. * manual/creature.texi: Explain this. * libc.map: Add new functions. * libio/Makefile (routines): Add fseeko and ftello. * libio/ftello.c: New file. * libio/fseeko.c: New file. * libio/stdio.h: Add prototypes for new functions. * manual/stdio.texi: Document fseeko and ftello. * posix/Makefile (routines): Add pread and pwrite. * sysdeps/posix/pread.c: New file. * sysdeps/posix/pwrite.c: New file. * sysdeps/stub/pread.c: New file. * sysdeps/stub/pwrite.c: New file. * posix/unistd.h: Add prototypes for pread and pwrite. Pretty print header. Define gid_t, uid_t, off_t, pid_t if __USE_UNIX98. Declare ctermid and cuserid if __USE_UNIX98. (swab): Change to take void * arguments. * string/swab.c: Change parameter to void *. * posix/sys/types: Define gid_t, uid_t, off_t, pid_t only if not already happened. * manual/llio.texi: Document pread and pwrite. * string/strings.h: Don't simply include string.h. Define BSD functions according to Unix98. * stdlib/tst-strtol.c: Include <string.h> not <strings.h>. * sunrpc/clnt_simp.c: Likewise. * malloc/Makefile (aux): Add set-freeres. * malloc/mtrace.c: Define function release_libc_mem which calls the __libc_subfreeres handler. (mtrace): Register release_libc_mem. * malloc/set-freeres.c: New file. * intl/dcgettext.c: Define free_mem function and add to __libc_subfreeres list. * intl/finddomain.c: Likewise. * intl/gettextP.h (struct loaded_domain): Add new fields use_mmap and mmap_size. Add prototype for _nl_unloaded_domain. * intl/loadmsgcat.c: Define new function _nl_unload_domain. (_nl_load_domain): Store informaiton about mmap use and file size. * intl/localealias.c (read_alias_file): Optimize locale alias file reading by avoid frequen mallocs. Define free_mem function and add to __libc_subfreeres list. * locale/localeinfo.h: Make a difference between MAX_USAGE_COUNT and undeletable. Add prototype for _nl_unload_locale. * locale/C-collate: Mark data as undeletable by using UNDELETABLE. * locale/C-ctype: Likewise. * locale/C-messages: Likewise. * locale/C-monetary: Likewise. * locale/C-numeric: Likewise. * locale/C-time: Likewise. * locale/findlocale.c (_nl_find_locale, _nl_remove_locale): Handle MAX_USAGE_COUNT and UNDELETABLE. (free_mem): New function. Add it to __libc_subfreeres list. * locale/loadlocale.c: Define _nl_unload_locale function. * misc/hsearch.c: Register hdestroy in __libc_subfreeres list. * stdlib/fmtmsg.c (addseverity): Handle illegal severity arguments correctly Define free_mem function and add to __libc_subfreeres list. * locale/programs/localedef.c (options): short form os verbose is v. Reported by Andreas Jaeger. * misc/sys/select.h: Define pselect only is __USE_POSIX since this header is used in some others as well for historical reasons. * resolv/resolv.h: Include <netinet/in.h> to make self-contained. * string/bits/string2.h: Add missing braces and optimize strcmp a bit more. * sysdeps/i386/i486/bits/string.h: Likewise. * sunrpc/rpc/auth_des.h: Include rpc/auth.h to be self-contained. Pretty print. * sysdeps/mach/hurd/cthreads.c: Add copyright text. * sysdeps/unix/sysv/linux/syscalls.list: Correct prctl entry. * sysdeps/unix/sysv/linux/sys/mman.h: Get definition of size_t. * time/time.h: Pretty print. 1997-09-29 Paul Eggert <eggert@twinsun.com> * time/strftime.c: Synchronize with GNU Emacs strftime.c. (HAVE_MEMCPY): Define if emacs is defined and HAVE_BCOPY isn't. (gmtime_r, localtime_r): Undef before defining. (iso_week_days): Use __inline__, not inline. 1997-09-27 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/bits/mathinline.h: Rename exp2{,l,f} to __ieee754_exp2{,l,f}. * sysdeps/m68k/fpu/s_exp2.c: Likewise. * sysdeps/m68k/fpu/s_exp2l.c: Likewise. * sysdeps/m68k/fpu/s_exp2f.c: Likewise. 1997-09-27 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/soinit.c (__EH_FRAME_BEGIN__): Don't make the .eh_frame section read-only, it contains relocations. * elf/sofini.c (__FRAME_END__): Likewise. 1997-09-29 03:08 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/i486/bits/string.h [__PIC__] (__strspn_cg, __strcspn_cg, __strpbrk_cg, __strstr_cg): Optimize even more. No spill register needed. Patch by NIIBE Yutaka <gniibe@mri.co.jp>. 1997-09-28 08:27 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/nis_call.c (__do_niscall2): Fix return code, add missing break in switch case. * nis/nis_mkdir.c: Fix return codes to match Solaris version. * nis/nis_rmdir.c: Likewise. * nis/rpcsvc/yp_prot.h: Rename struct keydat to struct keydat_t for C++. 1997-09-28 04:32 Ulrich Drepper <drepper@cygnus.com> * configure.in: Fix typo. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. 1997-09-25 20:14 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/unix/sysv/linux/scsi/sg.h: New file. * sysdeps/unix/sysv/linux/Makefile: Install <scsi/sg.h>.
Diffstat (limited to 'db2/btree/bt_cursor.c')
-rw-r--r-- | db2/btree/bt_cursor.c | 76 |
1 files changed, 49 insertions, 27 deletions
diff --git a/db2/btree/bt_cursor.c b/db2/btree/bt_cursor.c index efae556030..a1266bcd3c 100644 --- a/db2/btree/bt_cursor.c +++ b/db2/btree/bt_cursor.c @@ -8,7 +8,7 @@ #include "config.h" #ifndef lint -static const char sccsid[] = "@(#)bt_cursor.c 10.27 (Sleepycat) 9/3/97"; +static const char sccsid[] = "@(#)bt_cursor.c 10.33 (Sleepycat) 9/24/97"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES @@ -81,7 +81,10 @@ __bam_cursor(dbp, txn, dbcp) dbc->c_get = __bam_c_get; dbc->c_put = __bam_c_put; - /* All cursor structures hang off the main DB structure. */ + /* + * All cursors are queued from the master DB structure. Add the + * cursor to that queue. + */ DB_THREAD_LOCK(dbp); TAILQ_INSERT_HEAD(&dbp->curs_queue, dbc, links); DB_THREAD_UNLOCK(dbp); @@ -99,31 +102,53 @@ __bam_c_close(dbc) DBC *dbc; { DB *dbp; - CURSOR *cp; int ret; DEBUG_LWRITE(dbc->dbp, dbc->txn, "bam_c_close", NULL, NULL, 0); GETHANDLE(dbc->dbp, dbc->txn, &dbp, ret); + + ret = __bam_c_iclose(dbp, dbc); + + PUTHANDLE(dbp); + return (ret); +} + +/* + * __bam_c_iclose -- + * Close a single cursor -- internal version. + * + * PUBLIC: int __bam_c_iclose __P((DB *, DBC *)); + */ +int +__bam_c_iclose(dbp, dbc) + DB *dbp; + DBC *dbc; +{ + CURSOR *cp; + int ret; + cp = dbc->internal; - /* If a cursor key was deleted do the actual deletion. */ - ret = F_ISSET(cp, C_DELETED) ? __bam_c_physdel(dbp, cp, NULL) : 0; + /* If a cursor key was deleted, perform the actual deletion. */ + ret = F_ISSET(cp, C_DELETED) ? __bam_c_physdel(dbp, cp, NULL) : 0; /* Discard any lock if we're not inside a transaction. */ - if (dbp->txn == NULL && cp->lock != LOCK_INVALID) + if (cp->lock != LOCK_INVALID) (void)__BT_TLPUT(dbp, cp->lock); - /* Remove the cursor from the queue. */ - DB_THREAD_LOCK(dbp); - TAILQ_REMOVE(&dbp->curs_queue, dbc, links); - DB_THREAD_UNLOCK(dbp); + /* + * All cursors are queued from the master DB structure. Remove the + * cursor from that queue. + */ + DB_THREAD_LOCK(dbc->dbp); + TAILQ_REMOVE(&dbc->dbp->curs_queue, dbc, links); + DB_THREAD_UNLOCK(dbc->dbp); /* Discard the structures. */ - FREE(cp, sizeof(CURSOR)); + FREE(dbc->internal, sizeof(CURSOR)); FREE(dbc, sizeof(DBC)); - PUTHANDLE(dbp); return (ret); } @@ -235,27 +260,22 @@ __bam_get(argdbp, txn, key, data, flags) if ((ret = __db_getchk(argdbp, key, data, flags)) != 0) return (ret); - /* Build a cursor. */ + /* Build an internal cursor. */ memset(&cp, 0, sizeof(cp)); cp.dbc = &dbc; cp.pgno = cp.dpgno = PGNO_INVALID; cp.lock = LOCK_INVALID; + cp.flags = C_INTERNAL; + /* Build an external cursor. */ memset(&dbc, 0, sizeof(dbc)); dbc.dbp = argdbp; dbc.txn = txn; dbc.internal = &cp; /* Get the key. */ - if ((ret = __bam_c_get(&dbc, - key, data, LF_ISSET(DB_SET_RECNO) ? DB_SET_RECNO : DB_SET)) != 0) - return (ret); - - /* Discard any lock, the cursor didn't really exist. */ - if (cp.lock != LOCK_INVALID) - (void)__BT_TLPUT(argdbp, cp.lock); - - return (0); + return(__bam_c_get(&dbc, + key, data, LF_ISSET(DB_SET_RECNO) ? DB_SET_RECNO : DB_SET)); } /* @@ -275,8 +295,7 @@ __bam_c_get(dbc, key, data, flags) int exact, ret; DEBUG_LREAD(dbc->dbp, dbc->txn, "bam_c_get", - flags == DB_SET || flags == DB_SET_RANGE ? key : NULL, - NULL, flags); + flags == DB_SET || flags == DB_SET_RANGE ? key : NULL, NULL, flags); cp = dbc->internal; @@ -399,6 +418,10 @@ __bam_c_get(dbc, key, data, flags) /* Release the pinned page. */ ret = memp_fput(dbp->mpf, cp->page, 0); + /* Internal cursors don't hold locks. */ + if (F_ISSET(cp, C_INTERNAL) && cp->lock != LOCK_INVALID) + (void)__BT_TLPUT(dbp, cp->lock); + ++t->lstat.bt_get; if (0) { @@ -864,7 +887,7 @@ __bam_c_prev(dbp, cp) * If at the beginning of the page, move to any previous one. * * !!! - * This code handles empty pages and pages with only deleted entries. + * This code handles empty pages and pages with only deleted entries. */ for (;;) { if (indx == 0) { @@ -1472,8 +1495,7 @@ __bam_c_physdel(dbp, cp, h) * empty the current page of duplicates, we don't need to * touch the parent page. */ - if (PREV_PGNO(h) != PGNO_INVALID || - (h != NULL && pgno == h->pgno)) + if (prev_pgno != PGNO_INVALID || (h != NULL && pgno == h->pgno)) goto done; /* |