Import BSDDB 4.7.25 (as of svn r89086)

2017-09-04 13:40:25 -05:00
parent 4b29e0458f
commit 8f590873d0
4781 changed files with 2241032 additions and 6 deletions
--- a/dbinc/qam.h
+++ b/dbinc/qam.h
@@ -0,0 +1,180 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1999,2008 Oracle.  All rights reserved.
+ *
+ * $Id: qam.h 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#ifndef	_DB_QAM_H_
+#define	_DB_QAM_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*
+ * QAM data elements: a status field and the data.
+ */
+typedef struct _qamdata {
+	u_int8_t  flags;	/* 00: delete bit. */
+#define	QAM_VALID	0x01
+#define	QAM_SET		0x02
+	u_int8_t  data[1];	/* Record. */
+} QAMDATA;
+
+struct __queue;		typedef struct __queue QUEUE;
+struct __qcursor;	typedef struct __qcursor QUEUE_CURSOR;
+
+struct __qcursor {
+	/* struct __dbc_internal */
+	__DBC_INTERNAL
+
+	/* Queue private part */
+
+	/* Per-thread information: queue private. */
+	db_recno_t	 recno;		/* Current record number. */
+
+	u_int32_t	 flags;
+};
+
+typedef struct __mpfarray {
+	u_int32_t n_extent;		/* Number of extents in table. */
+	u_int32_t low_extent;		/* First extent open. */
+	u_int32_t hi_extent;		/* Last extent open. */
+	struct __qmpf {
+		int pinref;
+		DB_MPOOLFILE *mpf;
+	} *mpfarray;			 /* Array of open extents. */
+} MPFARRAY;
+
+/*
+ * The in-memory, per-tree queue data structure.
+ */
+struct __queue {
+	db_pgno_t q_meta;		/* Database meta-data page. */
+	db_pgno_t q_root;		/* Database root page. */
+
+	int	  re_pad;		/* Fixed-length padding byte. */
+	u_int32_t re_len;		/* Length for fixed-length records. */
+	u_int32_t rec_page;		/* records per page */
+	u_int32_t page_ext;		/* Pages per extent */
+	MPFARRAY array1, array2;	/* File arrays. */
+
+					/* Extent file configuration: */
+	DBT pgcookie;			/* Initialized pgcookie. */
+	DB_PGINFO pginfo;		/* Initialized pginfo struct. */
+
+	char *path;			/* Space allocated to file pathname. */
+	char *name;			/* The name of the file. */
+	char *dir;			/* The dir of the file. */
+	int mode;			/* Mode to open extents. */
+};
+
+/* Format for queue extent names. */
+#define	QUEUE_EXTENT		"%s%c__dbq.%s.%d"
+#define	QUEUE_EXTENT_HEAD	"__dbq.%s."
+#define	QUEUE_EXTENT_PREFIX	"__dbq."
+
+typedef struct __qam_filelist {
+	DB_MPOOLFILE *mpf;
+	u_int32_t id;
+} QUEUE_FILELIST;
+
+/*
+ * Calculate the page number of a recno.
+ *
+ * Number of records per page =
+ *	Divide the available space on the page by the record len + header.
+ *
+ * Page number for record =
+ *	divide the physical record number by the records per page
+ *	add the root page number
+ *	For now the root page will always be 1, but we might want to change
+ *	in the future (e.g. multiple fixed len queues per file).
+ *
+ * Index of record on page =
+ *	physical record number, less the logical pno times records/page
+ */
+#define	CALC_QAM_RECNO_PER_PAGE(dbp)					\
+    (((dbp)->pgsize - QPAGE_SZ(dbp)) /					\
+    (u_int32_t)DB_ALIGN((uintmax_t)SSZA(QAMDATA, data) +		\
+    ((QUEUE *)(dbp)->q_internal)->re_len, sizeof(u_int32_t)))
+
+#define	QAM_RECNO_PER_PAGE(dbp)	(((QUEUE*)(dbp)->q_internal)->rec_page)
+
+#define	QAM_RECNO_PAGE(dbp, recno)					\
+    (((QUEUE *)(dbp)->q_internal)->q_root				\
+    + (((recno) - 1) / QAM_RECNO_PER_PAGE(dbp)))
+
+#define	QAM_PAGE_EXTENT(dbp, pgno)					\
+    (((pgno) - 1) / ((QUEUE *)(dbp)->q_internal)->page_ext)
+
+#define	QAM_RECNO_EXTENT(dbp, recno)					\
+    QAM_PAGE_EXTENT(dbp, QAM_RECNO_PAGE(dbp, recno))
+
+#define	QAM_RECNO_INDEX(dbp, pgno, recno)				\
+    (((recno) - 1) - (QAM_RECNO_PER_PAGE(dbp)				\
+    * (pgno - ((QUEUE *)(dbp)->q_internal)->q_root)))
+
+#define	QAM_GET_RECORD(dbp, page, index)				\
+    ((QAMDATA *)((u_int8_t *)(page) + (QPAGE_SZ(dbp) +			\
+    (DB_ALIGN((uintmax_t)SSZA(QAMDATA, data) +				\
+    ((QUEUE *)(dbp)->q_internal)->re_len, sizeof(u_int32_t)) * index))))
+
+#define	QAM_AFTER_CURRENT(meta, recno)					\
+    ((recno) >= (meta)->cur_recno &&					\
+    ((meta)->first_recno <= (meta)->cur_recno ||			\
+    ((recno) < (meta)->first_recno &&					\
+    (recno) - (meta)->cur_recno < (meta)->first_recno - (recno))))
+
+#define	QAM_BEFORE_FIRST(meta, recno)					\
+    ((recno) < (meta)->first_recno &&					\
+    ((meta)->first_recno <= (meta)->cur_recno ||			\
+    ((recno) > (meta)->cur_recno &&					\
+    (recno) - (meta)->cur_recno > (meta)->first_recno - (recno))))
+
+#define	QAM_NOT_VALID(meta, recno)					\
+    (recno == RECNO_OOB ||						\
+	QAM_BEFORE_FIRST(meta, recno) || QAM_AFTER_CURRENT(meta, recno))
+
+/*
+ * Log opcodes for the mvptr routine.
+ */
+#define	QAM_SETFIRST		0x01
+#define	QAM_SETCUR		0x02
+#define	QAM_TRUNCATE		0x04
+
+typedef enum {
+	QAM_PROBE_GET,
+	QAM_PROBE_PUT,
+	QAM_PROBE_DIRTY,
+	QAM_PROBE_MPF
+} qam_probe_mode;
+
+/*
+ * Ops for __qam_nameop.
+ */
+typedef enum {
+	QAM_NAME_DISCARD,
+	QAM_NAME_RENAME,
+	QAM_NAME_REMOVE
+} qam_name_op;
+
+#define	__qam_fget(dbc, pgnoaddr, flags, addrp)		\
+	__qam_fprobe(dbc, *pgnoaddr,					\
+	    addrp, QAM_PROBE_GET, DB_PRIORITY_UNCHANGED, flags)
+
+#define	__qam_fput(dbc, pgno, addrp, priority) 			\
+	__qam_fprobe(dbc, pgno, addrp, QAM_PROBE_PUT, priority, 0)
+
+#define	__qam_dirty(dbc, pgno, pagep, priority) 		\
+	__qam_fprobe(dbc, pgno, pagep, QAM_PROBE_DIRTY, priority, 0)
+
+#if defined(__cplusplus)
+}
+#endif
+
+#include "dbinc_auto/qam_auto.h"
+#include "dbinc_auto/qam_ext.h"
+#endif /* !_DB_QAM_H_ */