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1997-08-10 19:17 Philip Blundell <Philip.Blundell@pobox.com> * nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>. Somebody should update this to use the new db API. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_db/db-alias.c: Likewise. * db2/Makefile: Makefile for db-2.x in glibc. 1997-08-27 21:20 Ulrich Drepper <drepper@cygnus.com> * csu/Makefile (before-compile): New goal. Make sure abi-tag.h is generated. [$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found. * Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add -D__USE_STRING_INLINES. * string/string.f: Move strnlen optimization after inclusion of <bits/string.h>. Include <bits/string.h> only if __USE_STRING_INLINES is defined. * sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name in <bits/string.h>. * sysdeps/generic/memset.c: Likewise. * sysdeps/i386/string.h: i386 optimized string functions. * sysdeps/i386/i486string.h: i486+ optimized string functions. * Makefile (subdirs): Change db to db2. * shlib-versions: Bump libdb verion number to 3. * include/db.h: Include from db2 directory. * include/db_185.h: New file. * sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros to provide spinlock information for db2. * sysdeps/m68k/m68020/Makefile: New file. Likewise. * sysdeps/sparc/Makefile: New file. Likewise. * sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS): Add -DHAVE_LLSEEK. * db2/config.h: Hand-edited config file for db2 in glibc. * db2/compat.h: New file from db-2.3.4. * db2/db.h: Likewise. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/makedb.c: Likewise. * db2/btree/bt_close.c: Likewise. * db2/btree/bt_compare.c: Likewise. * db2/btree/bt_conv.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_page.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/btree/bt_rsearch.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_err.c: Likewise. * db2/common/db_byteorder.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_salloc.c: Likewise. * db2/common/db_log2.c: Likewise. * db2/common/db_region.c: Likewise. * db2/common/db_shash.c: Likewise. * db2/db/db.c: Likewise. * db2/db/db.src: Likewise. * db2/db/db_conv.c: Likewise. * db2/db/db_dispatch.c: Likewise. * db2/db/db_dup.c: Likewise. * db2/db/db_overflow.c: Likewise. * db2/db/db_pr.c: Likewise. * db2/db/db_rec.c: Likewise. * db2/db/db_ret.c: Likewise. * db2/db/db_thread.c: Likewise. * db2/db/db_auto.c: Likewise. * db2/db185/db185.c: Likewise. * db2/db185/db185_int.h: Likewise. * db2/dbm/dbm.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash.src: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_conv.c: Likewise. * db2/hash/hash_debug.c: Likewise. * db2/hash/hash_stat.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_func.c: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/include/mp.h: Likewise. * db2/include/btree.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/db_shash.h: Likewise. * db2/include/db_swap.h: Likewise. * db2/include/db_185.h.src: Likewise. * db2/include/txn.h: Likewise. * db2/include/db_am.h: Likewise. * db2/include/shqueue.h: Likewise. * db2/include/hash.h: Likewise. * db2/include/db_dispatch.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/db_page.h: Likewise. * db2/include/log.h: Likewise. * db2/include/db_auto.h: Likewise. * db2/include/btree_auto.h: Likewise. * db2/include/hash_auto.h: Likewise. * db2/include/log_auto.h: Likewise. * db2/include/txn_auto.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/include/cxx_int.h: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/queue.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_conflict.c: Likewise. * db2/lock/lock_util.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log.src: Likewise. * db2/log/log_compare.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_register.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_findckp.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/mp/mp_region.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/68020.gcc: Likewise. * db2/mutex/mutex.c: Likewise. * db2/mutex/README: Likewise. * db2/mutex/x86.gcc: Likewise. * db2/mutex/sparc.gcc: Likewise. * db2/mutex/uts4.cc.s: Likewise. * db2/mutex/alpha.dec: Likewise. * db2/mutex/alpha.gcc: Likewise. * db2/mutex/parisc.gcc: Likewise. * db2/mutex/parisc.hp: Likewise. * db2/os/db_os_abs.c: Likewise. * db2/os/db_os_dir.c: Likewise. * db2/os/db_os_fid.c: Likewise. * db2/os/db_os_lseek.c: Likewise. * db2/os/db_os_mmap.c: Likewise. * db2/os/db_os_open.c: Likewise. * db2/os/db_os_rw.c: Likewise. * db2/os/db_os_sleep.c: Likewise. * db2/os/db_os_stat.c: Likewise. * db2/os/db_os_unlink.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn.src: Likewise. * db2/txn/txn_rec.c: Likewise. * db2/txn/txn_auto.c: Likewise. * db2/clib/getlong.c: Likewise. * db2/progs/db_archive/db_archive.c: Likewise. * db2/progs/db_checkpoint/db_checkpoint.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump/db_dump.c: Likewise. * db2/progs/db_dump185/db_dump185.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_printlog/db_printlog.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/progs/db_stat/db_stat.c: Likewise. * libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline. * po/de.po, po/sv.po: Update from 2.0.5 translations. * sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print. * sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback as const. * sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const. * sunrpx/xdr_rec.c (xdrrec_destroy): Likewise. * sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise. 1997-08-27 18:47 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>. Reported by Benjamin Kosnik <bkoz@cygnus.com>. 1997-08-27 02:27 Roland McGrath <roland@baalperazim.frob.com> * abi-tags: New file. * csu/Makefile (distribute): Remove abi-tag.h. ($(objpfx)abi-tag.h): New target. * Makefile (distribute): Add abi-tags. * sysdeps/unix/sysv/linux/abi-tag.h: File removed. * sysdeps/mach/hurd/abi-tag.h: File removed. * sysdeps/stub/abi-tag.h: File removed. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/make-syscalls.sh: Change output so that it generates compilation rules only for the currently selected object suffixes. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous section to avoid confusing the compiler. * sysdeps/alpha/dl-machine.h (RTLD_START): Likewise. * sysdeps/i386/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT relocation instead of a constant to avoid text relocation. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (RTLD_START): Declare global labels as functions and add size directive. 1997-08-25 17:01 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/bits/select.h: Correct assembler versions to work even for descriptors >= 32. * stdlib/alloca.h: Don't define alloca to __alloca since if gcc is used __alloca is not defined to __builtin_alloca and so might not be available. Reported by Uwe Ohse <uwe@ohse.de>. * sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special way if gcc is not used and so dev_t is an array. Reported by Uwe Ohse <uwe@ohse.de>. 1997-08-23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/libc.texinfo: Reorder chapters to match logical order. 1997-08-25 12:22 Ulrich Drepper <drepper@cygnus.com> * sunrpc/rpc/xdr.h: Change name of parameters in prototypes of xdr_reference, xdrmem_create, and xdrstdio_create because of clash with g++ internal symbols. Patch by Sudish Joseph <sj@eng.mindspring.net>. * elf/dl-deps.c: Implement handling of DT_FILTER.
341 lines
8.4 KiB
C
341 lines
8.4 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996, 1997
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* Sleepycat Software. All rights reserved.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)mp_region.c 10.11 (Sleepycat) 8/2/97";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#endif
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#include "db_int.h"
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#include "shqueue.h"
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#include "db_shash.h"
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#include "mp.h"
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#include "common_ext.h"
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/*
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* __memp_ralloc --
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* Allocate some space in the mpool region.
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*
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* PUBLIC: int __memp_ralloc __P((DB_MPOOL *, size_t, size_t *, void *));
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*/
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int
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__memp_ralloc(dbmp, len, offsetp, retp)
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DB_MPOOL *dbmp;
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size_t len, *offsetp;
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void *retp;
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{
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BH *bhp, *nbhp;
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MPOOL *mp;
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MPOOLFILE *mfp;
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size_t fsize, total;
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int nomore, restart, ret, wrote;
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void *p;
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mp = dbmp->mp;
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nomore = 0;
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alloc: if ((ret = __db_shalloc(dbmp->addr, len, MUTEX_ALIGNMENT, &p)) == 0) {
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if (offsetp != NULL)
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*offsetp = OFFSET(dbmp, p);
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*(void **)retp = p;
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return (0);
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}
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if (nomore) {
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__db_err(dbmp->dbenv, "%s", strerror(ret));
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return (ret);
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}
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/* Look for a buffer on the free list that's the right size. */
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for (bhp =
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SH_TAILQ_FIRST(&mp->bhfq, __bh); bhp != NULL; bhp = nbhp) {
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nbhp = SH_TAILQ_NEXT(bhp, q, __bh);
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if (__db_shsizeof(bhp) == len) {
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SH_TAILQ_REMOVE(&mp->bhfq, bhp, q, __bh);
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if (offsetp != NULL)
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*offsetp = OFFSET(dbmp, bhp);
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*(void **)retp = bhp;
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return (0);
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}
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}
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/* Discard from the free list until we've freed enough memory. */
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total = 0;
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for (bhp =
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SH_TAILQ_FIRST(&mp->bhfq, __bh); bhp != NULL; bhp = nbhp) {
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nbhp = SH_TAILQ_NEXT(bhp, q, __bh);
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SH_TAILQ_REMOVE(&mp->bhfq, bhp, q, __bh);
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__db_shalloc_free(dbmp->addr, bhp);
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/*
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* Retry as soon as we've freed up sufficient space. If we
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* have to coalesce of memory to satisfy the request, don't
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* try until it's likely (possible?) that we'll succeed.
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*/
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total += fsize = __db_shsizeof(bhp);
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if (fsize >= len || total >= 3 * len)
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goto alloc;
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}
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retry: /* Find a buffer we can flush; pure LRU. */
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total = 0;
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for (bhp =
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SH_TAILQ_FIRST(&mp->bhq, __bh); bhp != NULL; bhp = nbhp) {
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nbhp = SH_TAILQ_NEXT(bhp, q, __bh);
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/* Ignore pinned or locked (I/O in progress) buffers. */
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if (bhp->ref != 0 || F_ISSET(bhp, BH_LOCKED))
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continue;
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/* Find the associated MPOOLFILE. */
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mfp = ADDR(dbmp, bhp->mf_offset);
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/*
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* Write the page if it's dirty.
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*
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* If we wrote the page, fall through and free the buffer. We
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* don't have to rewalk the list to acquire the buffer because
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* it was never available for any other process to modify it.
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* If we didn't write the page, but we discarded and reacquired
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* the region lock, restart the buffer list walk. If we neither
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* wrote the buffer nor discarded the region lock, continue down
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* the buffer list.
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*/
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if (F_ISSET(bhp, BH_DIRTY)) {
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if ((ret = __memp_bhwrite(dbmp,
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mfp, bhp, &restart, &wrote)) != 0)
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return (ret);
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/*
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* It's possible that another process wants this buffer
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* and incremented the ref count while we were writing
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* it.
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*/
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if (bhp->ref != 0)
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goto retry;
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if (wrote)
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++mp->stat.st_rw_evict;
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else {
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if (restart)
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goto retry;
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else
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continue;
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}
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} else
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++mp->stat.st_ro_evict;
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/*
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* Check to see if the buffer is the size we're looking for.
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* If it is, simply reuse it.
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*/
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total += fsize = __db_shsizeof(bhp);
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if (fsize == len) {
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__memp_bhfree(dbmp, mfp, bhp, 0);
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if (offsetp != NULL)
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*offsetp = OFFSET(dbmp, bhp);
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*(void **)retp = bhp;
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return (0);
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}
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/* Free the buffer. */
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__memp_bhfree(dbmp, mfp, bhp, 1);
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/*
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* Retry as soon as we've freed up sufficient space. If we
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* have to coalesce of memory to satisfy the request, don't
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* try until it's likely (possible?) that we'll succeed.
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*/
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if (fsize >= len || total >= 3 * len)
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goto alloc;
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/* Restart the walk if we discarded the region lock. */
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if (restart)
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goto retry;
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}
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nomore = 1;
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goto alloc;
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}
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/*
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* __memp_ropen --
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* Attach to, and optionally create, the mpool region.
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*
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* PUBLIC: int __memp_ropen
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* PUBLIC: __P((DB_MPOOL *, const char *, size_t, int, int));
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*/
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int
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__memp_ropen(dbmp, path, cachesize, mode, flags)
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DB_MPOOL *dbmp;
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const char *path;
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size_t cachesize;
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int mode, flags;
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{
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MPOOL *mp;
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size_t rlen;
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int fd, newregion, ret, retry_cnt;
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/*
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* Unlike other DB subsystems, mpool can't simply grow the region
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* because it returns pointers into the region to its clients. To
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* "grow" the region, we'd have to allocate a new region and then
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* store a region number in the structures that reference regional
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* objects. It's reasonable that we fail regardless, as clients
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* shouldn't have every page in the region pinned, so the only
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* "failure" mode should be a performance penalty because we don't
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* find a page in the cache that we'd like to have found.
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*
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* Up the user's cachesize by 25% to account for our overhead.
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*/
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if (cachesize < DB_CACHESIZE_MIN)
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if (cachesize == 0)
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cachesize = DB_CACHESIZE_DEF;
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else
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cachesize = DB_CACHESIZE_MIN;
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rlen = cachesize + cachesize / 4;
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/* Map in the region. */
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retry_cnt = newregion = 0;
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retry: if (LF_ISSET(DB_CREATE)) {
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/*
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* If it's a private mpool, use malloc, it's a lot faster than
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* instantiating a region.
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*
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* XXX
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* If we're doing locking and don't have spinlocks for this
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* architecture, we'd have to instantiate the file, we need
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* the file descriptor for locking. However, it should not
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* be possible for DB_THREAD to be set if HAVE_SPINLOCKS aren't
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* defined.
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*/
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if (F_ISSET(dbmp, MP_ISPRIVATE))
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ret = (dbmp->maddr = malloc(rlen)) == NULL ? ENOMEM : 0;
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else
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ret = __db_rcreate(dbmp->dbenv, DB_APP_NONE, path,
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DB_DEFAULT_MPOOL_FILE, mode, rlen, &fd,
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&dbmp->maddr);
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if (ret == 0) {
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/* Put the MPOOL structure first in the region. */
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mp = dbmp->maddr;
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SH_TAILQ_INIT(&mp->bhq);
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SH_TAILQ_INIT(&mp->bhfq);
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SH_TAILQ_INIT(&mp->mpfq);
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/* Initialize the rest of the region as free space. */
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dbmp->addr = (u_int8_t *)dbmp->maddr + sizeof(MPOOL);
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__db_shalloc_init(dbmp->addr, rlen - sizeof(MPOOL));
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/*
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*
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* Pretend that the cache will be broken up into 4K
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* pages, and that we want to keep it under, say, 10
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* pages on each chain. This means a 256MB cache will
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* allocate ~6500 offset pairs.
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*/
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mp->htab_buckets =
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__db_tablesize((cachesize / (4 * 1024)) / 10);
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/* Allocate hash table space and initialize it. */
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if ((ret = __db_shalloc(dbmp->addr,
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mp->htab_buckets * sizeof(DB_HASHTAB),
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0, &dbmp->htab)) != 0)
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goto err;
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__db_hashinit(dbmp->htab, mp->htab_buckets);
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mp->htab = OFFSET(dbmp, dbmp->htab);
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memset(&mp->stat, 0, sizeof(mp->stat));
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mp->stat.st_cachesize = cachesize;
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mp->flags = 0;
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newregion = 1;
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} else if (ret != EEXIST)
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return (ret);
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}
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/* If we didn't or couldn't create the region, try and join it. */
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if (!newregion &&
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(ret = __db_ropen(dbmp->dbenv, DB_APP_NONE,
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path, DB_DEFAULT_MPOOL_FILE, 0, &fd, &dbmp->maddr)) != 0) {
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/*
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* If we failed because the file wasn't available, wait a
|
|
* second and try again.
|
|
*/
|
|
if (ret == EAGAIN && ++retry_cnt < 3) {
|
|
(void)__db_sleep(1, 0);
|
|
goto retry;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
/* Set up the common pointers. */
|
|
dbmp->mp = dbmp->maddr;
|
|
dbmp->addr = (u_int8_t *)dbmp->maddr + sizeof(MPOOL);
|
|
|
|
/*
|
|
* If not already locked, lock the region -- if it's a new region,
|
|
* then either __db_rcreate() locked it for us or we malloc'd it
|
|
* instead of creating a region, neither of which requires locking
|
|
* here.
|
|
*/
|
|
if (!newregion)
|
|
LOCKREGION(dbmp);
|
|
|
|
/*
|
|
* Get the hash table address; it's on the shared page, so we have
|
|
* to lock first.
|
|
*/
|
|
dbmp->htab = ADDR(dbmp, dbmp->mp->htab);
|
|
|
|
dbmp->fd = fd;
|
|
|
|
/* If we locked the region, release it now. */
|
|
if (!F_ISSET(dbmp, MP_ISPRIVATE))
|
|
UNLOCKREGION(dbmp);
|
|
return (0);
|
|
|
|
err: if (fd != -1) {
|
|
dbmp->fd = fd;
|
|
(void)__memp_rclose(dbmp);
|
|
}
|
|
|
|
if (newregion)
|
|
(void)memp_unlink(path, 1, dbmp->dbenv);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* __memp_rclose --
|
|
* Close the mpool region.
|
|
*
|
|
* PUBLIC: int __memp_rclose __P((DB_MPOOL *));
|
|
*/
|
|
int
|
|
__memp_rclose(dbmp)
|
|
DB_MPOOL *dbmp;
|
|
{
|
|
if (F_ISSET(dbmp, MP_ISPRIVATE)) {
|
|
free(dbmp->maddr);
|
|
return (0);
|
|
}
|
|
return (__db_rclose(dbmp->dbenv, dbmp->fd, dbmp->maddr));
|
|
}
|