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Overview
Comment: | Minor simplification to the OP_AutoCommit opcode. Fix some code comments related to transaction control. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
a9b6a0672f84dd205f9333951e4c2a60 |
User & Date: | drh 2016-02-01 13:21:13.072 |
Context
2016-02-01
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13:58 | Fix a problem causing the OR/covering-index optimization to be disabled if compile time parameter SQLITE_MAX_ATTACHED were set to greater than 30. (check-in: a17712bf8d user: dan tags: trunk) | |
13:21 | Minor simplification to the OP_AutoCommit opcode. Fix some code comments related to transaction control. (check-in: a9b6a0672f user: drh tags: trunk) | |
00:21 | Fix an assert() that might fail on a corrupt database. (check-in: 22eaced727 user: drh tags: trunk) | |
Changes
Changes to src/build.c.
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3888 3889 3890 3891 3892 3893 3894 | p->a[i].fg.jointype = p->a[i-1].fg.jointype; } p->a[0].fg.jointype = 0; } } /* | | < | | | | | 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 | p->a[i].fg.jointype = p->a[i-1].fg.jointype; } p->a[0].fg.jointype = 0; } } /* ** Generate VDBE code for a BEGIN statement. */ void sqlite3BeginTransaction(Parse *pParse, int type){ sqlite3 *db; Vdbe *v; int i; assert( pParse!=0 ); db = pParse->db; assert( db!=0 ); if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "BEGIN", 0, 0) ){ return; } v = sqlite3GetVdbe(pParse); if( !v ) return; if( type!=TK_DEFERRED ){ for(i=0; i<db->nDb; i++){ sqlite3VdbeAddOp2(v, OP_Transaction, i, (type==TK_EXCLUSIVE)+1); 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) ){ |
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Changes to src/vdbe.c.
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3004 3005 3006 3007 3008 3009 3010 | ** there are active writing VMs or active VMs that use shared cache. ** ** This instruction causes the VM to halt. */ case OP_AutoCommit: { int desiredAutoCommit; int iRollback; | < < < < < < < < < | > > > > > > > > | 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 | ** there are active writing VMs or active VMs that use shared cache. ** ** This instruction causes the VM to halt. */ case OP_AutoCommit: { int desiredAutoCommit; int iRollback; desiredAutoCommit = pOp->p1; iRollback = pOp->p2; assert( desiredAutoCommit==1 || desiredAutoCommit==0 ); assert( desiredAutoCommit==1 || iRollback==0 ); assert( db->nVdbeActive>0 ); /* At least this one VM is active */ assert( p->bIsReader ); if( desiredAutoCommit!=db->autoCommit ){ if( iRollback ){ assert( desiredAutoCommit==1 ); sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK); db->autoCommit = 1; }else if( desiredAutoCommit && db->nVdbeWrite>0 ){ /* If this instruction implements a COMMIT and other VMs are writing ** return an error indicating that the other VMs must complete first. */ sqlite3VdbeError(p, "cannot commit transaction - " "SQL statements in progress"); rc = SQLITE_BUSY; break; }else if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){ goto vdbe_return; }else{ db->autoCommit = (u8)desiredAutoCommit; } if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){ p->pc = (int)(pOp - aOp); |
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Changes to src/vdbeaux.c.
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530 531 532 533 534 535 536 | Parse *pParse = p->pParse; int *aLabel = pParse->aLabel; p->readOnly = 1; p->bIsReader = 0; for(pOp=p->aOp, i=p->nOp-1; i>=0; i--, pOp++){ u8 opcode = pOp->opcode; | | | 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 | Parse *pParse = p->pParse; int *aLabel = pParse->aLabel; p->readOnly = 1; p->bIsReader = 0; for(pOp=p->aOp, i=p->nOp-1; i>=0; i--, pOp++){ u8 opcode = pOp->opcode; /* NOTE: Be sure to update mkopcodeh.tcl when adding or removing ** cases from this switch! */ switch( opcode ){ case OP_Transaction: { if( pOp->p2!=0 ) p->readOnly = 0; /* fall thru */ } case OP_AutoCommit: |
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