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Avoid repeating calls to the sqlite3_trace() callback when the same statement

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is evaluted multiple times by sqlite3_step() due to an SQLITE_SCHEMA
reprepare.

FossilOrigin-Name: 39f763bfc04174ee0fe2cdf6a92b7c12f726bd1b
This commit is contained in:
drh
2012-09-04 21:34:26 +00:00
parent 8a7c142887
commit 37f58e9902
5 changed files with 29 additions and 21 deletions
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22
src/vdbeInt.h
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@@ -273,6 +273,11 @@ struct Explain {
char zBase[100]; /* Initial space */
};
/* A bitfield type for use inside of structures. Always follow with :N where
** N is the number of bits.
*/
typedef unsigned bft; /* Bit Field Type */
/*
** An instance of the virtual machine. This structure contains the complete
** state of the virtual machine.
@@ -314,15 +319,16 @@ struct Vdbe {
int pc; /* The program counter */
int rc; /* Value to return */
u8 errorAction; /* Recovery action to do in case of an error */
u8 explain; /* True if EXPLAIN present on SQL command */
u8 changeCntOn; /* True to update the change-counter */
u8 expired; /* True if the VM needs to be recompiled */
u8 runOnlyOnce; /* Automatically expire on reset */
u8 minWriteFileFormat; /* Minimum file format for writable database files */
u8 inVtabMethod; /* See comments above */
u8 usesStmtJournal; /* True if uses a statement journal */
u8 readOnly; /* True for read-only statements */
u8 isPrepareV2; /* True if prepared with prepare_v2() */
bft explain:2; /* True if EXPLAIN present on SQL command */
bft inVtabMethod:2; /* See comments above */
bft changeCntOn:1; /* True to update the change-counter */
bft expired:1; /* True if the VM needs to be recompiled */
bft runOnlyOnce:1; /* Automatically expire on reset */
bft usesStmtJournal:1; /* True if uses a statement journal */
bft readOnly:1; /* True for read-only statements */
bft isPrepareV2:1; /* True if prepared with prepare_v2() */
bft doingRerun:1; /* True if rerunning after an auto-reprepare */
int nChange; /* Number of db changes made since last reset */
yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */
yDbMask lockMask; /* Subset of btreeMask that requires a lock */