Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Slightly more compact implementation of the byte-code generator for the COMMIT and ROLLBACK commands. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 4da663d9863004d8cef58259a043fdcf |
| User & Date: | drh 2017-07-06 01:28:02 |
Context
|
2017-07-06
| ||
| 02:49 | Avoid unnecessary calls to sqlite3GetCollSeq() for a small performance gain. check-in: 503ba172 user: drh tags: trunk | |
| 01:28 | Slightly more compact implementation of the byte-code generator for the COMMIT and ROLLBACK commands. check-in: 4da663d9 user: drh tags: trunk | |
| 01:02 | Small performance increase in sqlite3SrcListAppend(). check-in: 7b2623f1 user: drh tags: trunk | |
Changes
Changes to src/build.c.
3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 |
sqlite3VdbeUsesBtree(v, i);
}
}
sqlite3VdbeAddOp0(v, OP_AutoCommit);
}
/*
** Generate VDBE code for a COMMIT statement.
*/
void sqlite3CommitTransaction(Parse *pParse){
Vdbe *v;
assert( pParse!=0 );
assert( pParse->db!=0 );
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "COMMIT", 0, 0) ){
return;
}
v = sqlite3GetVdbe(pParse);
if( v ){
sqlite3VdbeAddOp1(v, OP_AutoCommit, 1);
}
}
/*
** Generate VDBE code for a ROLLBACK statement.
*/
void sqlite3RollbackTransaction(Parse *pParse){
Vdbe *v;
assert( pParse!=0 );
assert( pParse->db!=0 );
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "ROLLBACK", 0, 0) ){
return;
}
v = sqlite3GetVdbe(pParse);
if( v ){
sqlite3VdbeAddOp2(v, OP_AutoCommit, 1, 1);
}
}
/*
** This function is called by the parser when it parses a command to create,
** release or rollback an SQL savepoint.
*/
|
| > > | > > > | > < < < < < < < < < < < < < < < < < | |
3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 |
sqlite3VdbeUsesBtree(v, i);
}
}
sqlite3VdbeAddOp0(v, OP_AutoCommit);
}
/*
** Generate VDBE code for a COMMIT or ROLLBACK statement.
** Code for ROLLBACK is generated if eType==TK_ROLLBACK. Otherwise
** code is generated for a COMMIT.
*/
void sqlite3EndTransaction(Parse *pParse, int eType){
Vdbe *v;
int isRollback;
assert( pParse!=0 );
assert( pParse->db!=0 );
assert( eType==TK_COMMIT || eType==TK_END || eType==TK_ROLLBACK );
isRollback = eType==TK_ROLLBACK;
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION,
isRollback ? "ROLLBACK" : "COMMIT", 0, 0) ){
return;
}
v = sqlite3GetVdbe(pParse);
if( v ){
sqlite3VdbeAddOp2(v, OP_AutoCommit, 1, isRollback);
}
}
/*
** This function is called by the parser when it parses a command to create,
** release or rollback an SQL savepoint.
*/
|
Changes to src/parse.y.
136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 |
trans_opt ::= TRANSACTION.
trans_opt ::= TRANSACTION nm.
%type transtype {int}
transtype(A) ::= . {A = TK_DEFERRED;}
transtype(A) ::= DEFERRED(X). {A = @X; /*A-overwrites-X*/}
transtype(A) ::= IMMEDIATE(X). {A = @X; /*A-overwrites-X*/}
transtype(A) ::= EXCLUSIVE(X). {A = @X; /*A-overwrites-X*/}
cmd ::= COMMIT trans_opt. {sqlite3CommitTransaction(pParse);}
cmd ::= END trans_opt. {sqlite3CommitTransaction(pParse);}
cmd ::= ROLLBACK trans_opt. {sqlite3RollbackTransaction(pParse);}
savepoint_opt ::= SAVEPOINT.
savepoint_opt ::= .
cmd ::= SAVEPOINT nm(X). {
sqlite3Savepoint(pParse, SAVEPOINT_BEGIN, &X);
}
cmd ::= RELEASE savepoint_opt nm(X). {
|
| | < |
136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 |
trans_opt ::= TRANSACTION.
trans_opt ::= TRANSACTION nm.
%type transtype {int}
transtype(A) ::= . {A = TK_DEFERRED;}
transtype(A) ::= DEFERRED(X). {A = @X; /*A-overwrites-X*/}
transtype(A) ::= IMMEDIATE(X). {A = @X; /*A-overwrites-X*/}
transtype(A) ::= EXCLUSIVE(X). {A = @X; /*A-overwrites-X*/}
cmd ::= COMMIT|END(X) trans_opt. {sqlite3EndTransaction(pParse,@X);}
cmd ::= ROLLBACK(X) trans_opt. {sqlite3EndTransaction(pParse,@X);}
savepoint_opt ::= SAVEPOINT.
savepoint_opt ::= .
cmd ::= SAVEPOINT nm(X). {
sqlite3Savepoint(pParse, SAVEPOINT_BEGIN, &X);
}
cmd ::= RELEASE savepoint_opt nm(X). {
|
Changes to src/sqliteInt.h.
3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 |
void sqlite3PrngSaveState(void); void sqlite3PrngRestoreState(void); #endif void sqlite3RollbackAll(sqlite3*,int); void sqlite3CodeVerifySchema(Parse*, int); void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb); void sqlite3BeginTransaction(Parse*, int); void sqlite3CommitTransaction(Parse*); void sqlite3RollbackTransaction(Parse*); void sqlite3Savepoint(Parse*, int, Token*); void sqlite3CloseSavepoints(sqlite3 *); void sqlite3LeaveMutexAndCloseZombie(sqlite3*); int sqlite3ExprIsConstant(Expr*); int sqlite3ExprIsConstantNotJoin(Expr*); int sqlite3ExprIsConstantOrFunction(Expr*, u8); int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*); |
| < |
3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 |
void sqlite3PrngSaveState(void); void sqlite3PrngRestoreState(void); #endif void sqlite3RollbackAll(sqlite3*,int); void sqlite3CodeVerifySchema(Parse*, int); void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb); void sqlite3BeginTransaction(Parse*, int); void sqlite3EndTransaction(Parse*,int); void sqlite3Savepoint(Parse*, int, Token*); void sqlite3CloseSavepoints(sqlite3 *); void sqlite3LeaveMutexAndCloseZombie(sqlite3*); int sqlite3ExprIsConstant(Expr*); int sqlite3ExprIsConstantNotJoin(Expr*); int sqlite3ExprIsConstantOrFunction(Expr*, u8); int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*); |