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/mp/mp_fopen.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/mp/mp_fopen.c')
-rw-r--r-- | db2/mp/mp_fopen.c | 78 |
1 files changed, 49 insertions, 29 deletions
diff --git a/db2/mp/mp_fopen.c b/db2/mp/mp_fopen.c index 1a770bfdf0..5ab807701c 100644 --- a/db2/mp/mp_fopen.c +++ b/db2/mp/mp_fopen.c @@ -7,7 +7,7 @@ #include "config.h" #ifndef lint -static const char sccsid[] = "@(#)mp_fopen.c 10.25 (Sleepycat) 8/27/97"; +static const char sccsid[] = "@(#)mp_fopen.c 10.27 (Sleepycat) 9/23/97"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES @@ -28,8 +28,8 @@ static const char sccsid[] = "@(#)mp_fopen.c 10.25 (Sleepycat) 8/27/97"; #include "common_ext.h" static int __memp_mf_close __P((DB_MPOOL *, DB_MPOOLFILE *)); -static int __memp_mf_open __P((DB_MPOOL *, DB_MPOOLFILE *, - int, int, size_t, int, DBT *, u_int8_t *, int, MPOOLFILE **)); +static int __memp_mf_open __P((DB_MPOOL *, + DB_MPOOLFILE *, int, size_t, int, DBT *, u_int8_t *, int, MPOOLFILE **)); /* * memp_fopen -- @@ -97,7 +97,6 @@ __memp_fopen(dbmp, path, path == NULL ? TEMPORARY : path, strerror(ENOMEM)); return (ENOMEM); } - LOCKINIT(dbmp, &dbmfp->mutex); dbmfp->dbmp = dbmp; dbmfp->fd = -1; if (LF_ISSET(DB_RDONLY)) @@ -141,14 +140,21 @@ __memp_fopen(dbmp, path, } } - /* Find/allocate the shared file object. */ + /* + * Find/allocate the shared file objects. This includes allocating + * space for the per-process thread lock. + */ if (needlock) LOCKREGION(dbmp); - ret = __memp_mf_open(dbmp, dbmfp, ftype, - F_ISSET(dbmfp, MP_READONLY), pagesize, + ret = __memp_mf_open(dbmp, dbmfp, ftype, pagesize, lsn_offset, pgcookie, fileid, F_ISSET(dbmfp, MP_PATH_TEMP), &mfp); + if (ret == 0 && + F_ISSET(dbmp, MP_LOCKHANDLE) && (ret = + __memp_ralloc(dbmp, sizeof(db_mutex_t), NULL, &dbmfp->mutexp)) == 0) + LOCKINIT(dbmp, dbmfp->mutexp); if (needlock) UNLOCKREGION(dbmp); + if (ret != 0) goto err; @@ -156,11 +162,11 @@ __memp_fopen(dbmp, path, /* * If a file: - * * + is read-only + * + isn't temporary * + doesn't require any pgin/pgout support - * + is less than mp_mmapsize bytes in size. - * + and the DB_NOMMAP flag wasn't set + * + the DB_NOMMAP flag wasn't set + * + and is less than mp_mmapsize bytes in size * * we can mmap it instead of reading/writing buffers. Don't do error * checking based on the mmap call failure. We want to do normal I/O @@ -176,11 +182,20 @@ __memp_fopen(dbmp, path, * flatly impossible. Hope that mmap fails if the file is too large. */ #define DB_MAXMMAPSIZE (10 * 1024 * 1024) /* 10 Mb. */ + if (mfp->can_mmap) { + if (!F_ISSET(dbmfp, MP_READONLY)) + mfp->can_mmap = 0; + if (path == NULL) + mfp->can_mmap = 0; + if (ftype != 0) + mfp->can_mmap = 0; + if (LF_ISSET(DB_NOMMAP)) + mfp->can_mmap = 0; + if (size > (dbenv == NULL || dbenv->mp_mmapsize == 0 ? + DB_MAXMMAPSIZE : (off_t)dbenv->mp_mmapsize)) + mfp->can_mmap = 0; + } dbmfp->addr = NULL; - mfp->can_mmap = F_ISSET(dbmfp, MP_READONLY) && - ftype == 0 && !LF_ISSET(DB_NOMMAP) && path != NULL && - size <= (dbenv == NULL || dbenv->mp_mmapsize == 0 ? - DB_MAXMMAPSIZE : (off_t)dbenv->mp_mmapsize); if (mfp->can_mmap) { dbmfp->len = size; if (__db_mmap(dbmfp->fd, dbmfp->len, 1, 1, &dbmfp->addr) != 0) { @@ -189,14 +204,18 @@ __memp_fopen(dbmp, path, } } - LOCKHANDLE(dbmp, &dbmp->mutex); + LOCKHANDLE(dbmp, dbmp->mutexp); TAILQ_INSERT_TAIL(&dbmp->dbmfq, dbmfp, q); - UNLOCKHANDLE(dbmp, &dbmp->mutex); + UNLOCKHANDLE(dbmp, dbmp->mutexp); *retp = dbmfp; return (0); -err: if (F_ISSET(dbmfp, MP_PATH_ALLOC)) +err: /* + * Note that we do not have to free the thread mutex, because we + * never get to here after we have successfully allocated it. + */ + if (F_ISSET(dbmfp, MP_PATH_ALLOC)) FREES(dbmfp->path); if (dbmfp->fd != -1) (void)__db_close(dbmfp->fd); @@ -211,10 +230,10 @@ err: if (F_ISSET(dbmfp, MP_PATH_ALLOC)) */ static int __memp_mf_open(dbmp, dbmfp, - ftype, readonly, pagesize, lsn_offset, pgcookie, fileid, istemp, retp) + ftype, pagesize, lsn_offset, pgcookie, fileid, istemp, retp) DB_MPOOL *dbmp; DB_MPOOLFILE *dbmfp; - int ftype, readonly, lsn_offset, istemp; + int ftype, lsn_offset, istemp; size_t pagesize; DBT *pgcookie; u_int8_t *fileid; @@ -255,13 +274,8 @@ __memp_mf_open(dbmp, dbmfp, mfp = NULL; goto ret1; } - /* - * Found it: increment the reference count and update - * the mmap-able status. - */ + /* Found it: increment the reference count. */ ++mfp->ref; - if (!readonly) - mfp->can_mmap = 0; goto ret1; } @@ -273,6 +287,7 @@ alloc: if ((ret = __memp_ralloc(dbmp, sizeof(MPOOLFILE), NULL, &mfp)) != 0) memset(mfp, 0, sizeof(MPOOLFILE)); mfp->ref = 1; mfp->ftype = ftype; + mfp->can_mmap = 1; mfp->lsn_off = lsn_offset; mfp->stat.st_pagesize = pagesize; @@ -343,9 +358,9 @@ memp_fclose(dbmfp) dbmfp->path, (u_long)dbmfp->pinref); /* Remove the DB_MPOOLFILE structure from the list. */ - LOCKHANDLE(dbmp, &dbmp->mutex); + LOCKHANDLE(dbmp, dbmp->mutexp); TAILQ_REMOVE(&dbmp->dbmfq, dbmfp, q); - UNLOCKHANDLE(dbmp, &dbmp->mutex); + UNLOCKHANDLE(dbmp, dbmp->mutexp); /* Close the underlying MPOOLFILE. */ (void)__memp_mf_close(dbmp, dbmfp); @@ -362,11 +377,16 @@ memp_fclose(dbmfp) t_ret = ret; } - /* Potentially allocated path. */ + /* Free memory. */ if (F_ISSET(dbmfp, MP_PATH_ALLOC)) FREES(dbmfp->path); + if (dbmfp->mutexp != NULL) { + LOCKREGION(dbmp); + __db_shalloc_free(dbmp->addr, dbmfp->mutexp); + UNLOCKREGION(dbmp); + } - /* Free the DB_MPOOLFILE structure. */ + /* Discard the DB_MPOOLFILE structure. */ FREE(dbmfp, sizeof(DB_MPOOLFILE)); return (ret); |