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Changes so that the space-analyzer script works with 3.7.0.

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FossilOrigin-Name: 86159cb3f00a380dc55be3affb01c433618f0683
This commit is contained in:
dan 2010-07-12 08:39:37 +00:00
parent c3b84830bd
commit 599e9d21bb
7 changed files with 710 additions and 338 deletions
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1
Makefile.in
View File

@ -369,6 +369,7 @@ TESTSRC = \
$(TOP)/src/test_pcache.c \
$(TOP)/src/test_schema.c \
$(TOP)/src/test_server.c \
$(TOP)/src/test_stat.c \
$(TOP)/src/test_tclvar.c \
$(TOP)/src/test_thread.c \
$(TOP)/src/test_vfs.c \

1
main.mk
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@ -247,6 +247,7 @@ TESTSRC = \
$(TOP)/src/test_pcache.c \
$(TOP)/src/test_schema.c \
$(TOP)/src/test_server.c \
$(TOP)/src/test_stat.c \
$(TOP)/src/test_tclvar.c \
$(TOP)/src/test_thread.c \
$(TOP)/src/test_vfs.c \

21
manifest
View File

@ -1,7 +1,7 @@
C Exclude\sa\sfew\smore\sFTS\smodules\sfrom\sthe\s"in\smemory"\spermutation\stest\ssuite.
D 2010-07-09T19:32:28
C Changes\sso\sthat\sthe\sspace-analyzer\sscript\sworks\swith\s3.7.0.
D 2010-07-12T08:39:38
F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
F Makefile.in c4270a1cd7cd70a263b7e96a258aa90e9c3618eb
F Makefile.in 3340503a02ffc70370f8308a484c99330589774d
F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
F Makefile.vxworks 4314cde20a1d9460ec5083526ea975442306ae7e
F README cd04a36fbc7ea56932a4052d7d0b7f09f27c33d6
@ -93,7 +93,7 @@ F ext/rtree/tkt3363.test 2bf324f7908084a5f463de3109db9c6e607feb1b
F ext/rtree/viewrtree.tcl eea6224b3553599ae665b239bd827e182b466024
F install-sh 9d4de14ab9fb0facae2f48780b874848cbf2f895 x
F ltmain.sh 3ff0879076df340d2e23ae905484d8c15d5fdea8
F main.mk f425173735dc971acf24378a716e6d5df43ca408
F main.mk 471e9b275ac3177c46ee077bcaba76f74313a13f
F mkdll.sh 7d09b23c05d56532e9d44a50868eb4b12ff4f74a
F mkextu.sh 416f9b7089d80e5590a29692c9d9280a10dbad9f
F mkextw.sh 4123480947681d9b434a5e7b1ee08135abe409ac
@ -176,7 +176,7 @@ F src/sqliteInt.h 8eb5d1c63fff70ed30f4b861aeaf8485e663129c
F src/sqliteLimit.h 196e2f83c3b444c4548fc1874f52f84fdbda40f3
F src/status.c 4df6fe7dce2d256130b905847c6c60055882bdbe
F src/table.c 2cd62736f845d82200acfa1287e33feb3c15d62e
F src/tclsqlite.c b898ab058f51ee57e6b54aa8de902526a5376959
F src/tclsqlite.c 0e47807e6e05269152a0d51348b72c221128723c
F src/test1.c a48320a6481761c46b61ee1c1ee39177add8fccd
F src/test2.c e3f564ab1e9fd0b47b0c9e23e7054e38bf0836cf
F src/test3.c 4c21700c73a890a47fc685c1097bfb661346ac94
@ -207,6 +207,7 @@ F src/test_osinst.c 700a39f4b7d3959fb65b1a97a5503a9b6d952c6b
F src/test_pcache.c 7bf828972ac0d2403f5cfa4cd14da41f8ebe73d8
F src/test_schema.c 8c06ef9ddb240c7a0fcd31bc221a6a2aade58bf0
F src/test_server.c bbba05c144b5fc4b52ff650a4328027b3fa5fcc6
F src/test_stat.c 29b4b949834b8c1901b5fd52df49ae36bea594d2
F src/test_tclvar.c f4dc67d5f780707210d6bb0eb6016a431c04c7fa
F src/test_thread.c bedd05cad673dba53326f3aa468cc803038896c0
F src/test_vfs.c bea0f0bdee9b033a62d057bf3451c25760b0414d
@ -825,14 +826,14 @@ F tool/showjournal.c ec3b171be148656827c4949fbfb8ab4370822f87
F tool/showwal.c f09e5a80a293919290ec85a6a37c85a5ddcf37d9
F tool/soak1.tcl 8d407956e1a45b485a8e072470a3e629a27037fe
F tool/space_used.tcl f714c41a59e326b8b9042f415b628b561bafa06b
F tool/spaceanal.tcl b87db46ae29e3116411b1686e136b9b994d7de39
F tool/spaceanal.tcl b91879d52bf77a1ff5382493284f429d32a63490
F tool/speedtest.tcl 06c76698485ccf597b9e7dbb1ac70706eb873355
F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
P 6af6794cac5516f8cbc425cb8c73468ca371a1ad
R 296bf4b92cd30dce2030d2dd3e08c3d8
U shaneh
Z 4214507f2db7672c59426bd44673cfd9
P 4e9d69cd5ac3cc4d12ccea3028cba73e3c3f2965
R 43d1a2278532e5bb600b8e2f0d56817e
U dan
Z 2a147625d7ac5be213d9b0b32d458d0e

2
manifest.uuid
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@ -1 +1 @@
4e9d69cd5ac3cc4d12ccea3028cba73e3c3f2965
86159cb3f00a380dc55be3affb01c433618f0683

2
src/tclsqlite.c
View File

@ -3561,6 +3561,7 @@ static void init_all(Tcl_Interp *interp){
extern int Sqlitetestbackup_Init(Tcl_Interp*);
extern int Sqlitetestintarray_Init(Tcl_Interp*);
extern int Sqlitetestvfs_Init(Tcl_Interp *);
extern int SqlitetestStat_Init(Tcl_Interp*);
Sqliteconfig_Init(interp);
Sqlitetest1_Init(interp);
@ -3588,6 +3589,7 @@ static void init_all(Tcl_Interp *interp){
Sqlitetestbackup_Init(interp);
Sqlitetestintarray_Init(interp);
Sqlitetestvfs_Init(interp);
SqlitetestStat_Init(interp);
Tcl_CreateObjCommand(interp,"load_testfixture_extensions",init_all_cmd,0,0);

604
src/test_stat.c Normal file
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@ -0,0 +1,604 @@
/*
** 2010 July 12
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
******************************************************************************
*/
#include "sqliteInt.h"
/*
** Page paths:
**
** The value of the 'path' column describes the path taken from the
** root-node of the b-tree structure to each page. The value of the
** root-node path is '/'.
**
** The value of the path for the left-most child page of the root of
** a b-tree is '/000/'. The next to left-most child of the root page is
** '/001', and so on, each sibling page identified by a 3-digit hex
** value. The children of the 450th left-most sibling have paths such
** as '/1c2/000/, '/1c2/001/' etc.
**
** Overflow pages are specified by appending a '+' character and a
** six-digit hexadecimal value to the path to the cell they are linked
** from. For example, the three overflow pages in a chain linked from
** the left-most cell of the 450th child of the root page are identified
** by the paths:
**
** '/1c2/000+000000' // First page in overflow chain
** '/1c2/000+000001' // Second page in overflow chain
** '/1c2/000+000002' // Third page in overflow chain
**
** If the paths are sorted using the BINARY collation sequence, then
** the overflow pages associated with a cell will appear earlier in the
** sort-order than its child page:
**
** '/1c2/000/' // Left-most child of 450th child of root
*/
#define VTAB_SCHEMA \
"CREATE TABLE xx( " \
" name STRING, /* Name of table or index */" \
" path INTEGER, /* Path to page from root */" \
" pageno INTEGER, /* Page number */" \
" pagetype STRING, /* 'internal', 'leaf' or 'overflow' */" \
" ncell INTEGER, /* Cells on page (0 for overflow) */" \
" payload INTEGER, /* Bytes of payload on this page */" \
" unused INTEGER, /* Bytes of unused space on this page */" \
" mx_payload INTEGER /* Largest payload size of all cells */" \
");"
#if 0
#define VTAB_SCHEMA2 \
"CREATE TABLE yy( " \
" pageno INTEGER, /* B-tree page number */" \
" cellno INTEGER, /* Cell number within page */" \
" local INTEGER, /* Bytes of content stored locally */" \
" payload INTEGER, /* Total cell payload size */" \
" novfl INTEGER /* Number of overflow pages */" \
");"
#endif
typedef struct StatTable StatTable;
typedef struct StatCursor StatCursor;
typedef struct StatPage StatPage;
typedef struct StatCell StatCell;
struct StatCell {
int nLocal; /* Bytes of local payload */
u32 iChildPg; /* Child node (or 0 if this is a leaf) */
int nOvfl; /* Entries in aOvfl[] */
u32 *aOvfl; /* Array of overflow page numbers */
int nLastOvfl; /* Bytes of payload on final overflow page */
int iOvfl; /* Iterates through aOvfl[] */
};
struct StatPage {
u32 iPgno;
DbPage *pPg;
int iCell;
char *zPath; /* Path to this page */
/* Variables populated by statDecodePage(): */
u8 flags; /* Copy of flags byte */
int nCell; /* Number of cells on page */
int nUnused; /* Number of unused bytes on page */
StatCell *aCell; /* Array of parsed cells */
u32 iRightChildPg; /* Right-child page number (or 0) */
int nMxPayload; /* Largest payload of any cell on this page */
};
struct StatCursor {
sqlite3_vtab_cursor base;
sqlite3_stmt *pStmt; /* Iterates through set of root pages */
int isEof; /* After pStmt has returned SQLITE_DONE */
StatPage aPage[32];
int iPage; /* Current entry in aPage[] */
/* Values to return. */
char *zName; /* Value of 'name' column */
char *zPath; /* Value of 'path' column */
u32 iPageno; /* Value of 'pageno' column */
char *zPagetype; /* Value of 'pagetype' column */
int nCell; /* Value of 'ncell' column */
int nPayload; /* Value of 'payload' column */
int nUnused; /* Value of 'unused' column */
int nMxPayload; /* Value of 'mx_payload' column */
};
struct StatTable {
sqlite3_vtab base;
sqlite3 *db;
};
#ifndef get2byte
# define get2byte(x) ((x)[0]<<8 | (x)[1])
#endif
/*
** Connect to or create a statvfs virtual table.
*/
static int statConnect(
sqlite3 *db,
void *pAux,
int argc, const char *const*argv,
sqlite3_vtab **ppVtab,
char **pzErr
){
StatTable *pTab;
pTab = (StatTable *)sqlite3_malloc(sizeof(StatTable));
memset(pTab, 0, sizeof(StatTable));
pTab->db = db;
sqlite3_declare_vtab(db, VTAB_SCHEMA);
*ppVtab = &pTab->base;
return SQLITE_OK;
}
/*
** Disconnect from or destroy a statvfs virtual table.
*/
static int statDisconnect(sqlite3_vtab *pVtab){
sqlite3_free(pVtab);
return SQLITE_OK;
}
/*
** There is no "best-index". This virtual table always does a linear
** scan of the binary VFS log file.
*/
static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
/* Records are always returned in ascending order of (name, path).
** If this will satisfy the client, set the orderByConsumed flag so that
** SQLite does not do an external sort.
*/
if( ( pIdxInfo->nOrderBy==1
&& pIdxInfo->aOrderBy[0].iColumn==0
&& pIdxInfo->aOrderBy[0].desc==0
) ||
( pIdxInfo->nOrderBy==2
&& pIdxInfo->aOrderBy[0].iColumn==0
&& pIdxInfo->aOrderBy[0].desc==0
&& pIdxInfo->aOrderBy[1].iColumn==1
&& pIdxInfo->aOrderBy[1].desc==0
)
){
pIdxInfo->orderByConsumed = 1;
}
pIdxInfo->estimatedCost = 10.0;
return SQLITE_OK;
}
/*
** Open a new statvfs cursor.
*/
static int statOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){
StatTable *pTab = (StatTable *)pVTab;
StatCursor *pCsr;
int rc;
pCsr = (StatCursor *)sqlite3_malloc(sizeof(StatCursor));
memset(pCsr, 0, sizeof(StatCursor));
pCsr->base.pVtab = pVTab;
rc = sqlite3_prepare_v2(pTab->db,
"SELECT 'sqlite_master' AS name, 1 AS rootpage, 'table' AS type"
" UNION ALL "
"SELECT name, rootpage, type FROM sqlite_master WHERE rootpage!=0"
" ORDER BY name", -1,
&pCsr->pStmt, 0
);
if( rc!=SQLITE_OK ){
sqlite3_free(pCsr);
return rc;
}
*ppCursor = (sqlite3_vtab_cursor *)pCsr;
return SQLITE_OK;
}
static void statClearPage(StatPage *p){
int i;
for(i=0; i<p->nCell; i++){
sqlite3_free(p->aCell[i].aOvfl);
}
sqlite3PagerUnref(p->pPg);
sqlite3_free(p->aCell);
sqlite3_free(p->zPath);
memset(p, 0, sizeof(StatPage));
}
static void statResetCsr(StatCursor *pCsr){
int i;
sqlite3_reset(pCsr->pStmt);
for(i=0; i<ArraySize(pCsr->aPage); i++){
statClearPage(&pCsr->aPage[i]);
}
pCsr->iPage = 0;
sqlite3_free(pCsr->zPath);
pCsr->zPath = 0;
}
/*
** Close a statvfs cursor.
*/
static int statClose(sqlite3_vtab_cursor *pCursor){
StatCursor *pCsr = (StatCursor *)pCursor;
statResetCsr(pCsr);
sqlite3_finalize(pCsr->pStmt);
sqlite3_free(pCsr);
return SQLITE_OK;
}
static void getLocalPayload(
int nUsable, /* Usable bytes per page */
u8 flags, /* Page flags */
int nTotal, /* Total record (payload) size */
int *pnLocal /* OUT: Bytes stored locally */
){
int nLocal;
int nMinLocal;
int nMaxLocal;
if( flags==0x0D ){ /* Table leaf node */
nMinLocal = (nUsable - 12) * 32 / 255 - 23;
nMaxLocal = nUsable - 35;
}else{ /* Index interior and leaf nodes */
nMinLocal = (nUsable - 12) * 32 / 255 - 23;
nMaxLocal = (nUsable - 12) * 64 / 255 - 23;
}
nLocal = nMinLocal + (nTotal - nMinLocal) % (nUsable - 4);
if( nLocal>nMaxLocal ) nLocal = nMinLocal;
*pnLocal = nLocal;
}
static int statDecodePage(Btree *pBt, StatPage *p){
int nUnused;
int iOff;
int nHdr;
int isLeaf;
u8 *aData = sqlite3PagerGetData(p->pPg);
u8 *aHdr = &aData[p->iPgno==1 ? 100 : 0];
p->flags = aHdr[0];
p->nCell = get2byte(&aHdr[3]);
p->nMxPayload = 0;
isLeaf = (p->flags==0x0A || p->flags==0x0D);
nHdr = 12 - isLeaf*4 + (p->iPgno==1)*100;
nUnused = get2byte(&aHdr[5]) - nHdr - 2*p->nCell;
nUnused += (int)aHdr[7];
iOff = get2byte(&aHdr[1]);
while( iOff ){
nUnused += get2byte(&aData[iOff+2]);
iOff = get2byte(&aData[iOff]);
}
p->nUnused = nUnused;
p->iRightChildPg = isLeaf ? 0 : sqlite3Get4byte(&aHdr[8]);
if( p->nCell ){
int i; /* Used to iterate through cells */
int nUsable = sqlite3BtreeGetPageSize(pBt) - sqlite3BtreeGetReserve(pBt);
p->aCell = sqlite3_malloc((p->nCell+1) * sizeof(StatCell));
memset(p->aCell, 0, (p->nCell+1) * sizeof(StatCell));
for(i=0; i<p->nCell; i++){
StatCell *pCell = &p->aCell[i];
iOff = get2byte(&aData[nHdr+i*2]);
if( !isLeaf ){
pCell->iChildPg = sqlite3Get4byte(&aData[iOff]);
iOff += 4;
}
if( p->flags==0x05 ){
/* A table interior node. nPayload==0. */
}else{
u32 nPayload; /* Bytes of payload total (local+overflow) */
int nLocal; /* Bytes of payload stored locally */
iOff += getVarint32(&aData[iOff], nPayload);
if( p->flags==0x0D ){
u64 dummy;
iOff += sqlite3GetVarint(&aData[iOff], &dummy);
}
if( nPayload>p->nMxPayload ) p->nMxPayload = nPayload;
getLocalPayload(nUsable, p->flags, nPayload, &nLocal);
pCell->nLocal = nLocal;
assert( nPayload>=nLocal );
assert( nLocal<=(nUsable-35) );
if( nPayload>nLocal ){
int j;
int nOvfl = ((nPayload - nLocal) + nUsable-4 - 1) / (nUsable - 4);
pCell->nLastOvfl = (nPayload-nLocal) - (nOvfl-1) * (nUsable-4);
pCell->nOvfl = nOvfl;
pCell->aOvfl = sqlite3_malloc(sizeof(u32)*nOvfl);
pCell->aOvfl[0] = sqlite3Get4byte(&aData[iOff+nLocal]);
for(j=1; j<nOvfl; j++){
int rc;
u32 iPrev = pCell->aOvfl[j-1];
DbPage *pPg = 0;
rc = sqlite3PagerGet(sqlite3BtreePager(pBt), iPrev, &pPg);
if( rc!=SQLITE_OK ){
assert( pPg==0 );
return rc;
}
pCell->aOvfl[j] = sqlite3Get4byte(sqlite3PagerGetData(pPg));
sqlite3PagerUnref(pPg);
}
}
}
}
}
return SQLITE_OK;
}
static void statSetPath(StatPage *p, StatPage *pParent){
if( pParent ){
p->zPath = sqlite3_mprintf("%s%.3x/", pParent->zPath, pParent->iCell);
}else{
}
}
/*
** Move a statvfs cursor to the next entry in the file.
*/
static int statNext(sqlite3_vtab_cursor *pCursor){
int rc;
int nPayload;
StatCursor *pCsr = (StatCursor *)pCursor;
StatTable *pTab = (StatTable *)pCursor->pVtab;
Btree *pBt = pTab->db->aDb[0].pBt;
Pager *pPager = sqlite3BtreePager(pBt);
sqlite3_free(pCsr->zPath);
pCsr->zPath = 0;
if( pCsr->aPage[0].pPg==0 ){
rc = sqlite3_step(pCsr->pStmt);
if( rc==SQLITE_ROW ){
u32 iRoot = sqlite3_column_int64(pCsr->pStmt, 1);
rc = sqlite3PagerGet(pPager, iRoot, &pCsr->aPage[0].pPg);
pCsr->aPage[0].iPgno = iRoot;
pCsr->aPage[0].iCell = 0;
pCsr->aPage[0].zPath = sqlite3_mprintf("/");
pCsr->iPage = 0;
}else{
pCsr->isEof = 1;
return sqlite3_reset(pCsr->pStmt);
}
}else{
/* Page p itself has already been visited. */
StatPage *p = &pCsr->aPage[pCsr->iPage];
while( p->iCell<p->nCell ){
StatCell *pCell = &p->aCell[p->iCell];
if( pCell->iOvfl<pCell->nOvfl ){
int nUsable = sqlite3BtreeGetPageSize(pBt)-sqlite3BtreeGetReserve(pBt);
pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0);
pCsr->iPageno = pCell->aOvfl[pCell->iOvfl];
pCsr->zPagetype = "overflow";
pCsr->nCell = 0;
pCsr->nMxPayload = 0;
pCsr->zPath = sqlite3_mprintf(
"%s%.3x+%.6x", p->zPath, p->iCell, pCell->iOvfl
);
if( pCell->iOvfl<pCell->nOvfl-1 ){
pCsr->nUnused = 0;
pCsr->nPayload = nUsable - 4;
}else{
pCsr->nPayload = pCell->nLastOvfl;
pCsr->nUnused = nUsable - 4 - pCsr->nPayload;
}
pCell->iOvfl++;
return SQLITE_OK;
}
if( p->iRightChildPg ) break;
p->iCell++;
}
while( !p->iRightChildPg || p->iCell>p->nCell ){
statClearPage(p);
if( pCsr->iPage==0 ) return statNext(pCursor);
pCsr->iPage--;
p = &pCsr->aPage[pCsr->iPage];
}
pCsr->iPage++;
assert( p==&pCsr->aPage[pCsr->iPage-1] );
if( p->iCell==p->nCell ){
p[1].iPgno = p->iRightChildPg;
}else{
p[1].iPgno = p->aCell[p->iCell].iChildPg;
}
rc = sqlite3PagerGet(pPager, p[1].iPgno, &p[1].pPg);
p[1].iCell = 0;
p[1].zPath = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell);
p->iCell++;
}
/* Populate the StatCursor fields with the values to be returned
** by the xColumn() and xRowid() methods.
*/
if( rc==SQLITE_OK ){
int i;
StatPage *p = &pCsr->aPage[pCsr->iPage];
pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0);
pCsr->iPageno = p->iPgno;
statDecodePage(pBt, p);
switch( p->flags ){
case 0x05: /* table internal */
case 0x02: /* index internal */
pCsr->zPagetype = "internal";
break;
case 0x0D: /* table leaf */
case 0x0A: /* index leaf */
pCsr->zPagetype = "leaf";
break;
default:
pCsr->zPagetype = "corrupted";
break;
}
pCsr->nCell = p->nCell;
pCsr->nUnused = p->nUnused;
pCsr->nMxPayload = p->nMxPayload;
pCsr->zPath = sqlite3_mprintf("%s", p->zPath);
nPayload = 0;
for(i=0; i<p->nCell; i++){
nPayload += p->aCell[i].nLocal;
}
pCsr->nPayload = nPayload;
}
return rc;
}
static int statEof(sqlite3_vtab_cursor *pCursor){
StatCursor *pCsr = (StatCursor *)pCursor;
return pCsr->isEof;
}
static int statFilter(
sqlite3_vtab_cursor *pCursor,
int idxNum, const char *idxStr,
int argc, sqlite3_value **argv
){
sqlite3 *db = ((StatTable *)(pCursor->pVtab))->db;
StatCursor *pCsr = (StatCursor *)pCursor;
int nPage = 0;
statResetCsr((StatCursor *)pCursor);
sqlite3PagerPagecount(sqlite3BtreePager(db->aDb[0].pBt), &nPage);
if( nPage==0 ){
pCsr->isEof = 1;
return SQLITE_OK;
}
return statNext(pCursor);
}
static int statColumn(
sqlite3_vtab_cursor *pCursor,
sqlite3_context *ctx,
int i
){
StatCursor *pCsr = (StatCursor *)pCursor;
switch( i ){
case 0: /* name */
sqlite3_result_text(ctx, pCsr->zName, -1, SQLITE_STATIC);
break;
case 1: /* path */
sqlite3_result_text(ctx, pCsr->zPath, -1, SQLITE_TRANSIENT);
break;
case 2: /* pageno */
sqlite3_result_int64(ctx, pCsr->iPageno);
break;
case 3: /* pagetype */
sqlite3_result_text(ctx, pCsr->zPagetype, -1, SQLITE_STATIC);
break;
case 4: /* ncell */
sqlite3_result_int(ctx, pCsr->nCell);
break;
case 5: /* payload */
sqlite3_result_int(ctx, pCsr->nPayload);
break;
case 6: /* unused */
sqlite3_result_int(ctx, pCsr->nUnused);
break;
case 7: /* mx_payload */
sqlite3_result_int(ctx, pCsr->nMxPayload);
break;
}
return SQLITE_OK;
}
static int statRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){
StatCursor *pCsr = (StatCursor *)pCursor;
*pRowid = pCsr->iPageno;
return SQLITE_OK;
}
int sqlite3_dbstat_register(sqlite3 *db){
static sqlite3_module dbstat_module = {
0, /* iVersion */
statConnect, /* xCreate */
statConnect, /* xConnect */
statBestIndex, /* xBestIndex */
statDisconnect, /* xDisconnect */
statDisconnect, /* xDestroy */
statOpen, /* xOpen - open a cursor */
statClose, /* xClose - close a cursor */
statFilter, /* xFilter - configure scan constraints */
statNext, /* xNext - advance a cursor */
statEof, /* xEof - check for end of scan */
statColumn, /* xColumn - read data */
statRowid, /* xRowid - read data */
0, /* xUpdate */
0, /* xBegin */
0, /* xSync */
0, /* xCommit */
0, /* xRollback */
0, /* xFindMethod */
0, /* xRename */
};
sqlite3_create_module(db, "dbstat", &dbstat_module, 0);
return SQLITE_OK;
}
#ifdef SQLITE_TEST
#include <tcl.h>
static int test_dbstat(
void *clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[]
){
#ifdef SQLITE_OMIT_VIRTUALTABLE
Tcl_AppendResult(interp, "dbstat not available because of "
"SQLITE_OMIT_VIRTUALTABLE", (void*)0);
return TCL_ERROR;
#else
struct SqliteDb { sqlite3 *db; };
char *zDb;
Tcl_CmdInfo cmdInfo;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 1, objv, "DB");
return TCL_ERROR;
}
zDb = Tcl_GetString(objv[1]);
if( Tcl_GetCommandInfo(interp, zDb, &cmdInfo) ){
sqlite3* db = ((struct SqliteDb*)cmdInfo.objClientData)->db;
sqlite3_dbstat_register(db);
}
return TCL_OK;
#endif
}
int SqlitetestStat_Init(Tcl_Interp *interp){
Tcl_CreateObjCommand(interp, "register_dbstat_vtab", test_dbstat, 0, 0);
return TCL_OK;
}
#endif

417
tool/spaceanal.tcl
View File

@ -26,14 +26,14 @@ if {[file size $file_to_analyze]<512} {
exit 1
}
# Maximum distance between pages before we consider it a "gap"
#
set MAXGAP 3
# Open the database
#
sqlite3 db [lindex $argv 0]
set DB [btree_open [lindex $argv 0] 1000 0]
register_dbstat_vtab db
set pageSize [db one {PRAGMA page_size}]
#set DB [btree_open [lindex $argv 0] 1000 0]
# In-memory database for collecting statistics. This script loops through
# the tables and indices in the database being analyzed, adding a row for each
@ -62,6 +62,87 @@ set tabledef\
);}
mem eval $tabledef
# Create a temporary "dbstat" virtual table.
#
db eval {
CREATE VIRTUAL TABLE temp.stat USING dbstat;
CREATE TEMP TABLE dbstat AS SELECT * FROM temp.stat ORDER BY name, path;
DROP TABLE temp.stat;
}
proc isleaf {pagetype is_index} {
return [expr {$pagetype == "leaf" || ($pagetype == "internal" && $is_index)}]
}
proc isoverflow {pagetype is_index} {
return [expr {$pagetype == "overflow"}]
}
proc isinternal {pagetype is_index} {
return [expr {$pagetype == "internal" && $is_index==0}]
}
db func isleaf isleaf
db func isinternal isinternal
db func isoverflow isoverflow
set sql { SELECT name, tbl_name FROM sqlite_master WHERE rootpage>0 }
foreach {name tblname} [concat sqlite_master sqlite_master [db eval $sql]] {
set is_index [expr {$name!=$tblname}]
db eval {
SELECT
sum(ncell) AS nentry,
sum(isleaf(pagetype, $is_index) * ncell) AS leaf_entries,
sum(payload) AS payload,
sum(isoverflow(pagetype, $is_index) * payload) AS ovfl_payload,
sum(path LIKE '%+000000') AS ovfl_cnt,
max(mx_payload) AS mx_payload,
sum(isinternal(pagetype, $is_index)) AS int_pages,
sum(isleaf(pagetype, $is_index)) AS leaf_pages,
sum(isoverflow(pagetype, $is_index)) AS ovfl_pages,
sum(isinternal(pagetype, $is_index) * unused) AS int_unused,
sum(isleaf(pagetype, $is_index) * unused) AS leaf_unused,
sum(isoverflow(pagetype, $is_index) * unused) AS ovfl_unused
FROM temp.dbstat WHERE name = $name
} break
# Column 'gap_cnt' is set to the number of non-contiguous entries in the
# list of pages visited if the b-tree structure is traversed in a top-down
# fashion (each node visited before its child-tree is passed). Any overflow
# chains present are traversed from start to finish before any child-tree
# is.
#
set gap_cnt 0
set pglist [db eval {
SELECT pageno FROM temp.dbstat WHERE name = $name ORDER BY rowid
}]
set prev [lindex $pglist 0]
foreach pgno [lrange $pglist 1 end] {
if {$pgno != $prev+1} {incr gap_cnt}
set prev $pgno
}
mem eval {
INSERT INTO space_used VALUES(
$name,
$tblname,
$is_index,
$nentry,
$leaf_entries,
$payload,
$ovfl_payload,
$ovfl_cnt,
$mx_payload,
$int_pages,
$leaf_pages,
$ovfl_pages,
$int_unused,
$leaf_unused,
$ovfl_unused,
$gap_cnt
);
}
}
proc integerify {real} {
if {[string is double -strict $real]} {
return [expr {int($real)}]
@ -81,321 +162,6 @@ proc quote {txt} {
return '$q'
}
# This proc is a wrapper around the btree_cursor_info command. The
# second argument is an open btree cursor returned by [btree_cursor].
# The first argument is the name of an array variable that exists in
# the scope of the caller. If the third argument is non-zero, then
# info is returned for the page that lies $up entries upwards in the
# tree-structure. (i.e. $up==1 returns the parent page, $up==2 the
# grandparent etc.)
#
# The following entries in that array are filled in with information retrieved
# using [btree_cursor_info]:
#
# $arrayvar(page_no) = The page number
# $arrayvar(entry_no) = The entry number
# $arrayvar(page_entries) = Total number of entries on this page
# $arrayvar(cell_size) = Cell size (local payload + header)
# $arrayvar(page_freebytes) = Number of free bytes on this page
# $arrayvar(page_freeblocks) = Number of free blocks on the page
# $arrayvar(payload_bytes) = Total payload size (local + overflow)
# $arrayvar(header_bytes) = Header size in bytes
# $arrayvar(local_payload_bytes) = Local payload size
# $arrayvar(parent) = Parent page number
#
proc cursor_info {arrayvar csr {up 0}} {
upvar $arrayvar a
foreach [list a(page_no) \
a(entry_no) \
a(page_entries) \
a(cell_size) \
a(page_freebytes) \
a(page_freeblocks) \
a(payload_bytes) \
a(header_bytes) \
a(local_payload_bytes) \
a(parent) \
a(first_ovfl) ] [btree_cursor_info $csr $up] break
}
# Determine the page-size of the database. This global variable is used
# throughout the script.
#
set pageSize [db eval {PRAGMA page_size}]
# Analyze every table in the database, one at a time.
#
# The following query returns the name and root-page of each table in the
# database, including the sqlite_master table.
#
set sql {
SELECT name, rootpage FROM sqlite_master
WHERE type='table' AND rootpage>0
UNION ALL
SELECT 'sqlite_master', 1
ORDER BY 1
}
set wideZero [expr {10000000000 - 10000000000}]
foreach {name rootpage} [db eval $sql] {
puts stderr "Analyzing table $name..."
# Code below traverses the table being analyzed (table name $name), using the
# btree cursor $cursor. Statistics related to table $name are accumulated in
# the following variables:
#
set total_payload $wideZero ;# Payload space used by all entries
set total_ovfl $wideZero ;# Payload space on overflow pages
set unused_int $wideZero ;# Unused space on interior nodes
set unused_leaf $wideZero ;# Unused space on leaf nodes
set unused_ovfl $wideZero ;# Unused space on overflow pages
set cnt_ovfl $wideZero ;# Number of entries that use overflows
set cnt_leaf_entry $wideZero ;# Number of leaf entries
set cnt_int_entry $wideZero ;# Number of interor entries
set mx_payload $wideZero ;# Maximum payload size
set ovfl_pages $wideZero ;# Number of overflow pages used
set leaf_pages $wideZero ;# Number of leaf pages
set int_pages $wideZero ;# Number of interior pages
set gap_cnt 0 ;# Number of holes in the page sequence
set prev_pgno 0 ;# Last page number seen
# As the btree is traversed, the array variable $seen($pgno) is set to 1
# the first time page $pgno is encountered.
#
catch {unset seen}
# The following loop runs once for each entry in table $name. The table
# is traversed using the btree cursor stored in variable $csr
#
set csr [btree_cursor $DB $rootpage 0]
for {btree_first $csr} {![btree_eof $csr]} {btree_next $csr} {
incr cnt_leaf_entry
# Retrieve information about the entry the btree-cursor points to into
# the array variable $ci (cursor info).
#
cursor_info ci $csr
# Check if the payload of this entry is greater than the current
# $mx_payload statistic for the table. Also increase the $total_payload
# statistic.
#
if {$ci(payload_bytes)>$mx_payload} {set mx_payload $ci(payload_bytes)}
incr total_payload $ci(payload_bytes)
# If this entry uses overflow pages, then update the $cnt_ovfl,
# $total_ovfl, $ovfl_pages and $unused_ovfl statistics.
#
set ovfl [expr {$ci(payload_bytes)-$ci(local_payload_bytes)}]
if {$ovfl} {
incr cnt_ovfl
incr total_ovfl $ovfl
set n [expr {int(ceil($ovfl/($pageSize-4.0)))}]
incr ovfl_pages $n
incr unused_ovfl [expr {$n*($pageSize-4) - $ovfl}]
set pglist [btree_ovfl_info $DB $csr]
} else {
set pglist {}
}
# If this is the first table entry analyzed for the page, then update
# the page-related statistics $leaf_pages and $unused_leaf. Also, if
# this page has a parent page that has not been analyzed, retrieve
# info for the parent and update statistics for it too.
#
if {![info exists seen($ci(page_no))]} {
set seen($ci(page_no)) 1
incr leaf_pages
incr unused_leaf $ci(page_freebytes)
set pglist "$ci(page_no) $pglist"
# Now check if the page has a parent that has not been analyzed. If
# so, update the $int_pages, $cnt_int_entry and $unused_int statistics
# accordingly. Then check if the parent page has a parent that has
# not yet been analyzed etc.
#
# set parent $ci(parent_page_no)
for {set up 1} \
{$ci(parent)!=0 && ![info exists seen($ci(parent))]} {incr up} \
{
# Mark the parent as seen.
#
set seen($ci(parent)) 1
# Retrieve info for the parent and update statistics.
cursor_info ci $csr $up
incr int_pages
incr cnt_int_entry $ci(page_entries)
incr unused_int $ci(page_freebytes)
# parent pages come before their first child
set pglist "$ci(page_no) $pglist"
}
}
# Check the page list for fragmentation
#
foreach pg $pglist {
if {$pg!=$prev_pgno+1 && $prev_pgno>0} {
incr gap_cnt
}
set prev_pgno $pg
}
}
btree_close_cursor $csr
# Handle the special case where a table contains no data. In this case
# all statistics are zero, except for the number of leaf pages (1) and
# the unused bytes on leaf pages ($pageSize - 8).
#
# An exception to the above is the sqlite_master table. If it is empty
# then all statistics are zero except for the number of leaf pages (1),
# and the number of unused bytes on leaf pages ($pageSize - 112).
#
if {[llength [array names seen]]==0} {
set leaf_pages 1
if {$rootpage==1} {
set unused_leaf [expr {$pageSize-112}]
} else {
set unused_leaf [expr {$pageSize-8}]
}
}
# Insert the statistics for the table analyzed into the in-memory database.
#
set sql "INSERT INTO space_used VALUES("
append sql [quote $name]
append sql ",[quote $name]"
append sql ",0"
append sql ",[expr {$cnt_leaf_entry+$cnt_int_entry}]"
append sql ",$cnt_leaf_entry"
append sql ",$total_payload"
append sql ",$total_ovfl"
append sql ",$cnt_ovfl"
append sql ",$mx_payload"
append sql ",$int_pages"
append sql ",$leaf_pages"
append sql ",$ovfl_pages"
append sql ",$unused_int"
append sql ",$unused_leaf"
append sql ",$unused_ovfl"
append sql ",$gap_cnt"
append sql );
mem eval $sql
}
# Analyze every index in the database, one at a time.
#
# The query below returns the name, associated table and root-page number
# for every index in the database.
#
set sql {
SELECT name, tbl_name, rootpage FROM sqlite_master WHERE type='index'
ORDER BY 2, 1
}
foreach {name tbl_name rootpage} [db eval $sql] {
puts stderr "Analyzing index $name of table $tbl_name..."
# Code below traverses the index being analyzed (index name $name), using the
# btree cursor $cursor. Statistics related to index $name are accumulated in
# the following variables:
#
set total_payload $wideZero ;# Payload space used by all entries
set total_ovfl $wideZero ;# Payload space on overflow pages
set unused_leaf $wideZero ;# Unused space on leaf nodes
set unused_ovfl $wideZero ;# Unused space on overflow pages
set cnt_ovfl $wideZero ;# Number of entries that use overflows
set cnt_leaf_entry $wideZero ;# Number of leaf entries
set mx_payload $wideZero ;# Maximum payload size
set ovfl_pages $wideZero ;# Number of overflow pages used
set leaf_pages $wideZero ;# Number of leaf pages
set gap_cnt 0 ;# Number of holes in the page sequence
set prev_pgno 0 ;# Last page number seen
# As the btree is traversed, the array variable $seen($pgno) is set to 1
# the first time page $pgno is encountered.
#
catch {unset seen}
# The following loop runs once for each entry in index $name. The index
# is traversed using the btree cursor stored in variable $csr
#
set csr [btree_cursor $DB $rootpage 0]
for {btree_first $csr} {![btree_eof $csr]} {btree_next $csr} {
incr cnt_leaf_entry
# Retrieve information about the entry the btree-cursor points to into
# the array variable $ci (cursor info).
#
cursor_info ci $csr
# Check if the payload of this entry is greater than the current
# $mx_payload statistic for the table. Also increase the $total_payload
# statistic.
#
set payload [btree_keysize $csr]
if {$payload>$mx_payload} {set mx_payload $payload}
incr total_payload $payload
# If this entry uses overflow pages, then update the $cnt_ovfl,
# $total_ovfl, $ovfl_pages and $unused_ovfl statistics.
#
set ovfl [expr {$payload-$ci(local_payload_bytes)}]
if {$ovfl} {
incr cnt_ovfl
incr total_ovfl $ovfl
set n [expr {int(ceil($ovfl/($pageSize-4.0)))}]
incr ovfl_pages $n
incr unused_ovfl [expr {$n*($pageSize-4) - $ovfl}]
}
# If this is the first table entry analyzed for the page, then update
# the page-related statistics $leaf_pages and $unused_leaf.
#
if {![info exists seen($ci(page_no))]} {
set seen($ci(page_no)) 1
incr leaf_pages
incr unused_leaf $ci(page_freebytes)
set pg $ci(page_no)
if {$prev_pgno>0 && $pg!=$prev_pgno+1} {
incr gap_cnt
}
set prev_pgno $ci(page_no)
}
}
btree_close_cursor $csr
# Handle the special case where a index contains no data. In this case
# all statistics are zero, except for the number of leaf pages (1) and
# the unused bytes on leaf pages ($pageSize - 8).
#
if {[llength [array names seen]]==0} {
set leaf_pages 1
set unused_leaf [expr {$pageSize-8}]
}
# Insert the statistics for the index analyzed into the in-memory database.
#
set sql "INSERT INTO space_used VALUES("
append sql [quote $name]
append sql ",[quote $tbl_name]"
append sql ",1"
append sql ",$cnt_leaf_entry"
append sql ",$cnt_leaf_entry"
append sql ",$total_payload"
append sql ",$total_ovfl"
append sql ",$cnt_ovfl"
append sql ",$mx_payload"
append sql ",0"
append sql ",$leaf_pages"
append sql ",$ovfl_pages"
append sql ",0"
append sql ",$unused_leaf"
append sql ",$unused_ovfl"
append sql ",$gap_cnt"
append sql );
mem eval $sql
}
# Generate a single line of output in the statistics section of the
# report.
#
@ -548,15 +314,12 @@ proc subreport {title where} {
# pages and the page size used by the database (in bytes).
proc autovacuum_overhead {filePages pageSize} {
# Read the value of meta 4. If non-zero, then the database supports
# auto-vacuum. It would be possible to use "PRAGMA auto_vacuum" instead,
# but that would not work if the SQLITE_OMIT_PRAGMA macro was defined
# when the library was built.
set meta4 [lindex [btree_get_meta $::DB] 4]
# Set $autovacuum to non-zero for databases that support auto-vacuum.
set autovacuum [db one {PRAGMA auto_vacuum}]
# If the database is not an auto-vacuum database or the file consists
# of one page only then there is no overhead for auto-vacuum. Return zero.
if {0==$meta4 || $filePages==1} {
if {0==$autovacuum || $filePages==1} {
return 0
}
@ -606,7 +369,7 @@ set inuse_percent [percent $inuse_pgcnt $file_pgcnt]
set free_pgcnt [expr $file_pgcnt-$inuse_pgcnt-$av_pgcnt]
set free_percent [percent $free_pgcnt $file_pgcnt]
set free_pgcnt2 [lindex [btree_get_meta $DB] 0]
set free_pgcnt2 [db one {PRAGMA freelist_count}]
set free_percent2 [percent $free_pgcnt2 $file_pgcnt]
set file_pgcnt2 [expr {$inuse_pgcnt+$free_pgcnt2+$av_pgcnt}]