Update. cvs/libc-ud-970827

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.

1 files changed, 194 insertions, 0 deletions

diff --git a/db2/include/lock.h b/db2/include/lock.h
new file mode 100644
index 0000000000..18d29e8740
--- /dev/null
+++ b/db2/include/lock.h
@@ -0,0 +1,194 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ *	Sleepycat Software.  All rights reserved.
+ *
+ *	@(#)lock.h	10.7 (Sleepycat) 7/29/97
+ */
+
+typedef struct __db_lockobj	DB_LOCKOBJ;
+
+#define DB_DEFAULT_LOCK_FILE	"__db_lock.share"
+#define DB_LOCK_DEFAULT_N	5000
+#define DB_LOCK_MAXID		0x7fffffff
+
+/*
+ * The lock region consists of:
+ *	The DB_LOCKREGION structure (sizeof(DB_LOCKREGION)).
+ *	The conflict matrix of nmodes * nmodes bytes (nmodes * nmodes).
+ *	The hash table for object lookup (hashsize * sizeof(DB_OBJ *)).
+ *	The locks themselves (maxlocks * sizeof(struct __db_lock).
+ *	The objects being locked (maxlocks * sizeof(DB_OBJ)).
+ *	String space to represent the DBTs that are the objects being locked.
+ */
+struct __db_lockregion {
+	RLAYOUT		hdr;		/* Shared region header. */
+	u_int32_t	magic;		/* lock magic number */
+	u_int32_t	version;	/* version number */
+	u_int32_t	id;		/* unique id generator */
+	u_int32_t	need_dd;	/* flag for deadlock detector */
+	u_int32_t	detect;		/* run dd on every conflict */
+	SH_TAILQ_HEAD(lock_header) free_locks;	/* free lock header */
+	SH_TAILQ_HEAD(obj_header) free_objs;	/* free obj header */
+	u_int32_t	maxlocks;	/* maximum number of locks in table */
+	u_int32_t	table_size;	/* size of hash table */
+	u_int32_t	nmodes;		/* number of lock modes */
+	u_int32_t	numobjs;	/* number of objects */
+	u_int32_t	nlockers;	/* number of lockers */
+	size_t		increment;	/* how much to grow region */
+	size_t		hash_off;	/* offset of hash table */
+	size_t		mem_off;	/* offset of memory region */
+	size_t		mem_bytes;	/* number of bytes in memory region */
+	u_int32_t	nconflicts;	/* number of lock conflicts */
+	u_int32_t	nrequests;	/* number of lock gets */
+	u_int32_t	nreleases;	/* number of lock puts */
+	u_int32_t	ndeadlocks;	/* number of deadlocks */
+};
+
+/* Macros to lock/unlock the region. */
+#define	LOCK_LOCKREGION(lt)						\
+	(void)__db_mutex_lock(&(lt)->region->hdr.lock,(lt)->fd,		\
+	    (lt)->dbenv == NULL ? NULL : (lt)->dbenv->db_yield)
+#define	UNLOCK_LOCKREGION(lt)						\
+	(void)__db_mutex_unlock(&(lt)->region->hdr.lock, (lt)->fd)
+
+/*
+ * Since we will be keeping DBTs in shared memory, we need the equivalent
+ * of a DBT that will work in shared memory.
+ */
+typedef struct __sh_dbt {
+	u_int32_t size;
+	ssize_t off;
+} SH_DBT;
+
+#define SH_DBT_PTR(p)	((void *)(((u_int8_t *)(p)) + (p)->off))
+
+/*
+ * The lock table is the per-process cookie returned from a lock_open call.
+ */
+struct __db_lockobj {
+	SH_DBT	lockobj;		/* Identifies object locked. */
+	SH_TAILQ_ENTRY links;		/* Links for free list. */
+	union {
+		SH_TAILQ_HEAD(_wait) _waiters;	/* List of waiting locks. */
+		u_int32_t	_dd_id;		/* Deadlock detector id. */
+	} wlinks;
+	union {
+		SH_LIST_HEAD(_held) _heldby;	/* Locks held by this locker. */
+		SH_TAILQ_HEAD(_hold) _holders;	/* List of held locks. */
+	} dlinks;
+#define	DB_LOCK_OBJTYPE		1
+#define	DB_LOCK_LOCKER		2
+	u_int8_t type;			/* Real object or locker id. */
+};
+
+
+#define dd_id	wlinks._dd_id
+#define	waiters	wlinks._waiters
+#define	holders	dlinks._holders
+#define	heldby	dlinks._heldby
+
+struct __db_locktab {
+	DB_ENV		*dbenv;		/* Environment. */
+	int		 fd;		/* mapped file descriptor */
+	DB_LOCKREGION	*region;	/* address of shared memory region */
+	DB_HASHTAB 	*hashtab; 	/* Beginning of hash table. */
+	size_t		reg_size;	/* last known size of lock region */
+	void		*mem;		/* Beginning of string space. */
+	u_int8_t 	*conflicts;	/* Pointer to conflict matrix. */
+};
+
+/* Test for conflicts. */
+#define CONFLICTS(T, HELD, WANTED) \
+	T->conflicts[HELD * T->region->nmodes + WANTED]
+
+/*
+ * Status of a lock.
+ */
+typedef enum {
+	DB_LSTAT_ABORTED,		/* Lock belongs to an aborted txn. */
+	DB_LSTAT_ERR,			/* Lock is bad. */
+	DB_LSTAT_FREE,			/* Lock is unallocated. */
+	DB_LSTAT_HELD,			/* Lock is currently held. */
+	DB_LSTAT_NOGRANT,		/* Lock was not granted. */
+	DB_LSTAT_PENDING,		/* Lock was waiting and has been
+					 * promoted; waiting for the owner
+					 * to run and upgrade it to held. */
+	DB_LSTAT_WAITING		/* Lock is on the wait queue. */
+} db_status_t;
+
+/*
+ * Resources in the lock region.  Used to indicate which resource
+ * is running low when we need to grow the region.
+ */
+typedef enum {
+	DB_LOCK_MEM, DB_LOCK_OBJ, DB_LOCK_LOCK
+} db_resource_t;
+
+struct __db_lock {
+	/*
+	 * Wait on mutex to wait on lock.  You reference your own mutex with
+	 * ID 0 and others reference your mutex with ID 1.
+	 */
+	db_mutex_t	mutex;
+
+	u_int32_t	holder;		/* Who holds this lock. */
+	SH_TAILQ_ENTRY	links;		/* Free or holder/waiter list. */
+	SH_LIST_ENTRY	locker_links;	/* List of locks held by a locker. */
+	u_int32_t	refcount;	/* Reference count the lock. */
+	db_lockmode_t	mode;		/* What sort of lock. */
+	ssize_t		obj;		/* Relative offset of object struct. */
+	db_status_t	status;		/* Status of this lock. */
+};
+
+/*
+ * We cannot return pointers to the user (else we cannot easily grow regions),
+ * so we return offsets in the region.  These must be converted to and from
+ * regular pointers.  Always use the macros below.
+ */
+#define OFFSET_TO_LOCK(lt, off)	\
+	((struct __db_lock *)((u_int8_t *)((lt)->region) + (off)))
+#define LOCK_TO_OFFSET(lt, lock) \
+	((size_t)((u_int8_t *)(lock) - (u_int8_t *)lt->region))
+#define OFFSET_TO_OBJ(lt, off)	\
+	((DB_LOCKOBJ *)((u_int8_t *)((lt)->region) + (off)))
+#define OBJ_TO_OFFSET(lt, obj) \
+	((size_t)((u_int8_t *)(obj) - (u_int8_t *)lt->region))
+
+/*
+ * The lock header contains the region structure and the conflict matrix.
+ * Aligned to a large boundary because we don't know what the underlying
+ * type of the hash table elements are.
+ */
+#define LOCK_HASH_ALIGN	8
+#define LOCK_HEADER_SIZE(M)	\
+	((size_t)(sizeof(DB_LOCKREGION) + ALIGN((M * M), LOCK_HASH_ALIGN)))
+
+/*
+ * For the full region, we need to add the locks, the objects, the hash table
+ * and the string space (which is 16 bytes per lock).
+ */
+#define STRING_SIZE(N) (16 * N)
+
+#define LOCK_REGION_SIZE(M, N, H)					\
+	(ALIGN(LOCK_HEADER_SIZE(M) +					\
+	(H) * sizeof(DB_HASHTAB), MUTEX_ALIGNMENT) +			\
+	(N) * ALIGN(sizeof(struct __db_lock), MUTEX_ALIGNMENT) +	\
+	ALIGN((N) * sizeof(DB_LOCKOBJ), sizeof(size_t)) +		\
+	ALIGN(STRING_SIZE(N), sizeof(size_t)))
+
+#ifdef DEBUG
+#define	LOCK_DEBUG_LOCKERS	0x0001
+#define	LOCK_DEBUG_LOCK	 	0x0002
+#define	LOCK_DEBUG_OBJ	 	0x0004
+#define	LOCK_DEBUG_CONF	 	0x0008
+#define	LOCK_DEBUG_MEM	 	0x0010
+#define	LOCK_DEBUG_BUCKET	0x0020
+#define LOCK_DEBUG_OBJECTS	0x0040
+#define	LOCK_DEBUG_ALL	 	0xFFFF
+
+#define	LOCK_DEBUG_NOMUTEX	0x0100
+#endif
+
+#include "lock_ext.h"