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Experimental code to measure memory consumed by database schemas and prepared statements.

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FossilOrigin-Name: 9aa30342f4de4eff630520ea8e07ad253d3f0877
This commit is contained in:
dan
2010-07-24 11:28:28 +00:00
parent 5419ee5f2f
commit d46def77db
14 changed files with 430 additions and 97 deletions
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55
src/vdbeaux.c
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@@ -573,11 +573,14 @@ static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef){
}
}
static void vdbeFreeOpArray(sqlite3 *, Op *, int);
/*
** Delete a P4 value if necessary.
*/
static void freeP4(sqlite3 *db, int p4type, void *p4){
if( p4 ){
assert( db );
switch( p4type ){
case P4_REAL:
case P4_INT64:
@@ -592,7 +595,7 @@ static void freeP4(sqlite3 *db, int p4type, void *p4){
case P4_VDBEFUNC: {
VdbeFunc *pVdbeFunc = (VdbeFunc *)p4;
freeEphemeralFunction(db, pVdbeFunc->pFunc);
sqlite3VdbeDeleteAuxData(pVdbeFunc, 0);
if( db->pnBytesFreed==0 ) sqlite3VdbeDeleteAuxData(pVdbeFunc, 0);
sqlite3DbFree(db, pVdbeFunc);
break;
}
@@ -605,11 +608,25 @@ static void freeP4(sqlite3 *db, int p4type, void *p4){
break;
}
case P4_VTAB : {
sqlite3VtabUnlock((VTable *)p4);
if( db->pnBytesFreed==0 ) sqlite3VtabUnlock((VTable *)p4);
break;
}
case P4_SUBPROGRAM : {
sqlite3VdbeProgramDelete(db, (SubProgram *)p4, 1);
if( db->pnBytesFreed ){
SubProgram *p = (SubProgram *)p4;
SubProgram *pDone;
for(pDone=db->pSubProgram; pDone; pDone=pDone->pNext){
if( pDone==p ) break;
}
if( !pDone ){
p->pNext = db->pSubProgram;
db->pSubProgram = p;
vdbeFreeOpArray(db, p->aOp, p->nOp);
sqlite3DbFree(db, p);
}
}else{
sqlite3VdbeProgramDelete(db, (SubProgram *)p4, 1);
}
break;
}
}
@@ -1003,6 +1020,11 @@ static void releaseMemArray(Mem *p, int N){
Mem *pEnd;
sqlite3 *db = p->db;
u8 malloc_failed = db->mallocFailed;
if( db->pnBytesFreed ){
for(pEnd=&p[N]; p<pEnd; p++){
sqlite3DbFree(db, p->zMalloc);
}
}else
for(pEnd=&p[N]; p<pEnd; p++){
assert( (&p[1])==pEnd || p[0].db==p[1].db );
@@ -2335,6 +2357,24 @@ void sqlite3VdbeDeleteAuxData(VdbeFunc *pVdbeFunc, int mask){
}
}
/*
** Free all memory associated with the Vdbe passed as the second argument.
** The difference between this function and sqlite3VdbeDelete() is that
** VdbeDelete() also unlinks the Vdbe from the list of VMs associated with
** the database connection.
*/
void sqlite3VdbeDeleteObject(sqlite3 *db, Vdbe *p){
assert( p->db==0 || p->db==db );
releaseMemArray(p->aVar, p->nVar);
releaseMemArray(p->aColName, p->nResColumn*COLNAME_N);
vdbeFreeOpArray(db, p->aOp, p->nOp);
sqlite3DbFree(db, p->aLabel);
sqlite3DbFree(db, p->aColName);
sqlite3DbFree(db, p->zSql);
sqlite3DbFree(db, p->pFree);
sqlite3DbFree(db, p);
}
/*
** Delete an entire VDBE.
*/
@@ -2352,16 +2392,9 @@ void sqlite3VdbeDelete(Vdbe *p){
if( p->pNext ){
p->pNext->pPrev = p->pPrev;
}
releaseMemArray(p->aVar, p->nVar);
releaseMemArray(p->aColName, p->nResColumn*COLNAME_N);
vdbeFreeOpArray(db, p->aOp, p->nOp);
sqlite3DbFree(db, p->aLabel);
sqlite3DbFree(db, p->aColName);
sqlite3DbFree(db, p->zSql);
p->magic = VDBE_MAGIC_DEAD;
sqlite3DbFree(db, p->pFree);
p->db = 0;
sqlite3DbFree(db, p);
sqlite3VdbeDeleteObject(db, p);
}
/*