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Changes In Branch stmtstatus-memused Excluding Merge-Ins
This is equivalent to a diff from cb4c5c66ab to b57d510465
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2017-05-31
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| 17:30 | Add the SQLITE_STMTSTATUS_MEMUSED opcode to sqlite3_stmt_status() for finding the heap memory usage by a single prepared statement. (check-in: c26cf978ee user: drh tags: trunk) | |
| 16:21 | Add the SQLITE_STMTSTATUS_MEMUSED option for sqlite3_stmt_status() that reports the amount of heap memory used for a single prepared statement. (Closed-Leaf check-in: b57d510465 user: drh tags: stmtstatus-memused) | |
| 16:09 | Add the experimental "stmts" virtual table for introspection of prepared statements. (check-in: cb4c5c66ab user: drh tags: trunk) | |
| 13:45 | Avoid allocating excess memory to the KeyInfo objects. (check-in: df78594351 user: drh tags: trunk) | |
Changes to ext/misc/stmts.c.
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94 95 96 97 98 99 100 101 102 103 | 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | + - + | #define STMTS_COLUMN_NCOL 2 /* Number of result columns */ #define STMTS_COLUMN_RO 3 /* True if read-only */ #define STMTS_COLUMN_BUSY 4 /* True if currently busy */ #define STMTS_COLUMN_NSCAN 5 /* SQLITE_STMTSTATUS_FULLSCAN_STEP */ #define STMTS_COLUMN_NSORT 6 /* SQLITE_STMTSTATUS_SORT */ #define STMTS_COLUMN_NAIDX 7 /* SQLITE_STMTSTATUS_AUTOINDEX */ #define STMTS_COLUMN_NSTEP 8 /* SQLITE_STMTSTATUS_VM_STEP */ #define STMTS_COLUMN_MEM 9 /* SQLITE_STMTSTATUS_MEMUSED */ rc = sqlite3_declare_vtab(db, |
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182 183 184 185 186 187 188 | 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | - + + |
case STMTS_COLUMN_BUSY: {
sqlite3_result_int(ctx, sqlite3_stmt_busy(pCur->pStmt));
break;
}
case STMTS_COLUMN_NSCAN:
case STMTS_COLUMN_NSORT:
case STMTS_COLUMN_NAIDX:
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Changes to src/sqlite.h.in.
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7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143 7144 7145 7146 7147 7148 7149 | 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 | + + + + + | ** [[SQLITE_STMTSTATUS_VM_STEP]] <dt>SQLITE_STMTSTATUS_VM_STEP</dt> ** <dd>^This is the number of virtual machine operations executed ** by the prepared statement if that number is less than or equal ** to 2147483647. The number of virtual machine operations can be ** used as a proxy for the total work done by the prepared statement. ** If the number of virtual machine operations exceeds 2147483647 ** then the value returned by this statement status code is undefined. ** ** [[SQLITE_STMTSTATUS_MEMUSED]] <dt>SQLITE_STMTSTATUS_MEMUSED</dt> ** <dd>^This is the approximate number of bytes of heap memory ** used to store the prepared statement. ** </dd> ** </dl> */ #define SQLITE_STMTSTATUS_FULLSCAN_STEP 1 #define SQLITE_STMTSTATUS_SORT 2 #define SQLITE_STMTSTATUS_AUTOINDEX 3 #define SQLITE_STMTSTATUS_VM_STEP 4 #define SQLITE_STMTSTATUS_MEMUSED 5 /* ** CAPI3REF: Custom Page Cache Object ** ** The sqlite3_pcache type is opaque. It is implemented by ** the pluggable module. The SQLite core has no knowledge of ** its size or internal structure and never deals with the |
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Changes to src/vdbeapi.c.
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1609 1610 1611 1612 1613 1614 1615 | 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 | + + + + + + + + + + - - + + + |
u32 v;
#ifdef SQLITE_ENABLE_API_ARMOR
if( !pStmt ){
(void)SQLITE_MISUSE_BKPT;
return 0;
}
#endif
if( op==SQLITE_STMTSTATUS_MEMUSED ){
sqlite3 *db = pVdbe->db;
sqlite3_mutex_enter(db->mutex);
v = 0;
db->pnBytesFreed = (int*)&v;
sqlite3VdbeClearObject(db, pVdbe);
sqlite3DbFree(db, pVdbe);
db->pnBytesFreed = 0;
sqlite3_mutex_leave(db->mutex);
}else{
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