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authorUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
committerUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
commit92f1da4da04a7a86ddee91be5eaf0b10c333ac64 (patch)
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parent22be878ecbc66606371bd33258f56e6711e6ba7a (diff)
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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.
Diffstat (limited to 'db2/db_int.h')
-rw-r--r--db2/db_int.h332
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diff --git a/db2/db_int.h b/db2/db_int.h
new file mode 100644
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--- /dev/null
+++ b/db2/db_int.h
@@ -0,0 +1,332 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ * Sleepycat Software. All rights reserved.
+ *
+ * @(#)db_int.h.src 10.28 (Sleepycat) 8/20/97
+ */
+
+#ifndef _DB_INTERNAL_H_
+#define _DB_INTERNAL_H_
+
+#include "db.h" /* Standard DB include file. */
+#include "queue.h"
+#include "os_ext.h"
+
+/*******************************************************
+ * General purpose constants and macros.
+ *******************************************************/
+#define UINT32_T_MAX 0xffffffff /* Maximum 32 bit unsigned. */
+#define UINT16_T_MAX 0xffff /* Maximum 16 bit unsigned. */
+
+#define DB_MIN_PGSIZE 0x000200 /* Minimum page size. */
+#define DB_MAX_PGSIZE 0x010000 /* Maximum page size. */
+
+#define DB_MINCACHE 10 /* Minimum cached pages */
+
+/*
+ * Aligning items to particular sizes or in pages or memory. ALIGNP is a
+ * separate macro, as we've had to cast the pointer to different integral
+ * types on different architectures.
+ *
+ * We cast pointers into unsigned longs when manipulating them because C89
+ * guarantees that u_long is the largest available integral type and further,
+ * to never generate overflows. However, neither C89 or C9X requires that
+ * any integer type be large enough to hold a pointer, although C9X created
+ * the intptr_t type, which is guaranteed to hold a pointer but may or may
+ * not exist. At some point in the future, we should test for intptr_t and
+ * use it where available.
+ */
+#undef ALIGNTYPE
+#define ALIGNTYPE u_long
+#undef ALIGNP
+#define ALIGNP(value, bound) ALIGN((ALIGNTYPE)value, bound)
+#undef ALIGN
+#define ALIGN(value, bound) (((value) + (bound) - 1) & ~((bound) - 1))
+
+/*
+ * There are several on-page structures that are declared to have a number of
+ * fields followed by a variable length array of items. The structure size
+ * without including the variable length array or the address of the first of
+ * those elements can be found using SSZ.
+ *
+ * This macro can also be used to find the offset of a structure element in a
+ * structure. This is used in various places to copy structure elements from
+ * unaligned memory references, e.g., pointers into a packed page.
+ *
+ * There are two versions because compilers object if you take the address of
+ * an array.
+ */
+#undef SSZ
+#define SSZ(name, field) ((int)&(((name *)0)->field))
+
+#undef SSZA
+#define SSZA(name, field) ((int)&(((name *)0)->field[0]))
+
+/* Free and free-string macros that overwrite memory during debugging. */
+#ifdef DEBUG
+#undef FREE
+#define FREE(p, len) { \
+ memset(p, 0xff, len); \
+ free(p); \
+}
+#undef FREES
+#define FREES(p) { \
+ FREE(p, strlen(p)); \
+}
+#else
+#undef FREE
+#define FREE(p, len) { \
+ free(p); \
+}
+#undef FREES
+#define FREES(p) { \
+ free(p); \
+}
+#endif
+
+/* Structure used to print flag values. */
+typedef struct __fn {
+ u_int32_t mask; /* Flag value. */
+ const char *name; /* Flag name. */
+} FN;
+
+/* Set, clear and test flags. */
+#define F_SET(p, f) (p)->flags |= (f)
+#define F_CLR(p, f) (p)->flags &= ~(f)
+#define F_ISSET(p, f) ((p)->flags & (f))
+#define LF_SET(f) (flags |= (f))
+#define LF_CLR(f) (flags &= ~(f))
+#define LF_ISSET(f) (flags & (f))
+
+/* Display separator string. */
+#undef DB_LINE
+#define DB_LINE "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-="
+
+/*******************************************************
+ * Files.
+ *******************************************************/
+#ifndef MAXPATHLEN /* Maximum path length. */
+#ifdef PATH_MAX
+#define MAXPATHLEN PATH_MAX
+#else
+#define MAXPATHLEN 1024
+#endif
+#endif
+
+#define PATH_DOT "." /* Current working directory. */
+#define PATH_SEPARATOR "/" /* Path separator character. */
+
+#ifndef S_IRUSR /* UNIX specific file permissions. */
+#define S_IRUSR 0000400 /* R for owner */
+#define S_IWUSR 0000200 /* W for owner */
+#define S_IRGRP 0000040 /* R for group */
+#define S_IWGRP 0000020 /* W for group */
+#define S_IROTH 0000004 /* R for other */
+#define S_IWOTH 0000002 /* W for other */
+#endif
+
+#ifndef S_ISDIR /* UNIX specific: directory test. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000)
+#endif
+
+/*******************************************************
+ * Mutex support.
+ *******************************************************/
+typedef unsigned char tsl_t;
+
+
+
+/*
+ * !!!
+ * Various systems require different alignments for mutexes (the worst we've
+ * seen so far is 16-bytes on some HP architectures). The mutex (tsl_t) must
+ * be first in the db_mutex_t structure, which must itself be first in the
+ * region. This ensures the alignment is as returned by mmap(2), which should
+ * be sufficient. All other mutex users must ensure proper alignment locally.
+ */
+#define MUTEX_ALIGNMENT 1
+
+/*
+ * The offset of a mutex in memory.
+ */
+#define MUTEX_LOCK_OFFSET(a, b) ((off_t)((u_int8_t *)b - (u_int8_t *)a))
+
+typedef struct _db_mutex_t {
+#ifdef HAVE_SPINLOCKS
+ tsl_t tsl_resource; /* Resource test and set. */
+#ifdef DEBUG
+ u_long pid; /* Lock holder: 0 or process pid. */
+#endif
+#else
+ off_t off; /* Backing file offset. */
+ u_long pid; /* Lock holder: 0 or process pid. */
+#endif
+#ifdef MUTEX_STATISTICS
+ u_long mutex_set_wait; /* Blocking mutex: required waiting. */
+ u_long mutex_set_nowait; /* Blocking mutex: without waiting. */
+#endif
+} db_mutex_t;
+
+#include "mutex_ext.h"
+
+/*******************************************************
+ * Access methods.
+ *******************************************************/
+/* Lock/unlock a DB thread. */
+#define DB_THREAD_LOCK(dbp) \
+ (F_ISSET(dbp, DB_AM_THREAD) ? \
+ __db_mutex_lock((db_mutex_t *)(dbp)->mutex, -1, \
+ (dbp)->dbenv == NULL ? NULL : (dbp)->dbenv->db_yield) : 0)
+#define DB_THREAD_UNLOCK(dbp) \
+ (F_ISSET(dbp, DB_AM_THREAD) ? \
+ __db_mutex_unlock((db_mutex_t *)(dbp)->mutex, -1) : 0)
+
+/* Btree/recno local statistics structure. */
+struct __db_bt_lstat; typedef struct __db_bt_lstat DB_BTREE_LSTAT;
+struct __db_bt_lstat {
+ u_int32_t bt_freed; /* Pages freed for reuse. */
+ u_int32_t bt_pfxsaved; /* Bytes saved by prefix compression. */
+ u_int32_t bt_split; /* Total number of splits. */
+ u_int32_t bt_rootsplit; /* Root page splits. */
+ u_int32_t bt_fastsplit; /* Fast splits. */
+ u_int32_t bt_added; /* Items added. */
+ u_int32_t bt_deleted; /* Items deleted. */
+ u_int32_t bt_get; /* Items retrieved. */
+ u_int32_t bt_cache_hit; /* Hits in fast-insert code. */
+ u_int32_t bt_cache_miss; /* Misses in fast-insert code. */
+};
+
+/*******************************************************
+ * Environment.
+ *******************************************************/
+/* Type passed to __db_appname(). */
+typedef enum {
+ DB_APP_NONE=0, /* No type (region). */
+ DB_APP_DATA, /* Data file. */
+ DB_APP_LOG, /* Log file. */
+ DB_APP_TMP /* Temporary file. */
+} APPNAME;
+
+/*******************************************************
+ * Regions.
+ *******************************************************/
+/*
+ * The shared memory regions share an initial structure so that the general
+ * region code can handle races between the region being deleted and other
+ * processes waiting on the region mutex.
+ *
+ * !!!
+ * Note, the mutex must be the first entry in the region; see comment above.
+ */
+typedef struct _rlayout {
+ db_mutex_t lock; /* Region mutex. */
+ u_int32_t refcnt; /* Region reference count. */
+ size_t size; /* Region length. */
+ int majver; /* Major version number. */
+ int minver; /* Minor version number. */
+ int patch; /* Patch version number. */
+
+#define DB_R_DELETED 0x01 /* Region was deleted. */
+ u_int32_t flags;
+} RLAYOUT;
+
+/*******************************************************
+ * Mpool.
+ *******************************************************/
+/*
+ * File types for DB access methods. Negative numbers are reserved to DB.
+ */
+#define DB_FTYPE_BTREE -1 /* Btree. */
+#define DB_FTYPE_HASH -2 /* Hash. */
+
+/* Structure used as the DB pgin/pgout pgcookie. */
+typedef struct __dbpginfo {
+ size_t db_pagesize; /* Underlying page size. */
+ int needswap; /* If swapping required. */
+} DB_PGINFO;
+
+/*******************************************************
+ * Log.
+ *******************************************************/
+/* Initialize an LSN to 'zero'. */
+#define ZERO_LSN(LSN) { \
+ (LSN).file = 0; \
+ (LSN).offset = 0; \
+}
+
+/* Return 1 if LSN is a 'zero' lsn, otherwise return 0. */
+#define IS_ZERO_LSN(LSN) ((LSN).file == 0)
+
+/* Test if we need to log a change. */
+#define DB_LOGGING(dbp) \
+ (F_ISSET(dbp, DB_AM_LOGGING) && !F_ISSET(dbp, DB_AM_RECOVER))
+
+#ifdef DEBUG
+/*
+ * Debugging macro to log operations.
+ * If DEBUG_WOP is defined, log operations that modify the database.
+ * If DEBUG_ROP is defined, log operations that read the database.
+ *
+ * D dbp
+ * T txn
+ * O operation (string)
+ * K key
+ * A data
+ * F flags
+ */
+#define LOG_OP(D, T, O, K, A, F) { \
+ DB_LSN _lsn; \
+ DBT _op; \
+ if (DB_LOGGING((D))) { \
+ memset(&_op, 0, sizeof(_op)); \
+ _op.data = O; \
+ _op.size = strlen(O) + 1; \
+ (void)__db_debug_log((D)->dbenv->lg_info, \
+ T, &_lsn, 0, &_op, (D)->log_fileid, K, A, F); \
+ } \
+}
+#ifdef DEBUG_ROP
+#define DEBUG_LREAD(D, T, O, K, A, F) LOG_OP(D, T, O, K, A, F)
+#else
+#define DEBUG_LREAD(D, T, O, K, A, F)
+#endif
+#ifdef DEBUG_WOP
+#define DEBUG_LWRITE(D, T, O, K, A, F) LOG_OP(D, T, O, K, A, F)
+#else
+#define DEBUG_LWRITE(D, T, O, K, A, F)
+#endif
+#else
+#define DEBUG_LREAD(D, T, O, K, A, F)
+#define DEBUG_LWRITE(D, T, O, K, A, F)
+#endif /* DEBUG */
+
+/*******************************************************
+ * Transactions and recovery.
+ *******************************************************/
+/*
+ * The locker id space is divided between the transaction manager and the lock
+ * manager. Lockid's start at 0 and go to MAX_LOCKER_ID. Txn Id's start at
+ * MAX_LOCKER_ID + 1 and go up to MAX_TXNID.
+ */
+#define MAX_LOCKER_ID 0x0fffffff
+#define MAX_TXNID 0xffffffff
+
+/*
+ * Out of band value for a lock. The locks are returned to callers as offsets
+ * into the lock regions. Since the RLAYOUT structure begins all regions, an
+ * offset of 0 is guaranteed not to be a valid lock.
+ */
+#define LOCK_INVALID 0
+
+/* The structure allocated for every transaction. */
+struct __db_txn {
+ DB_TXNMGR *mgrp; /* Pointer to transaction manager. */
+ DB_TXN *parent; /* Pointer to transaction's parent. */
+ DB_LSN last_lsn; /* Lsn of last log write. */
+ u_int32_t txnid; /* Unique transaction id. */
+ size_t off; /* Detail structure within region. */
+ TAILQ_ENTRY(__db_txn) links;
+};
+#endif /* !_DB_INTERNAL_H_ */