[tarantool-patches] [PATCH v7 2/2] sql: remove psql_txn from Vdbe

[imeevma@tarantool.org]

It makes no sense to store it here, and it has never
did. SQL transaction specific things shall be taken
from global txn object, as any transaction specific
things.
---
 src/box/sql/vdbe.c    | 15 +++++++++------
 src/box/sql/vdbeInt.h |  2 --
 src/box/sql/vdbeaux.c | 10 +++-------
 3 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index 2571492..1e732a9 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -2882,7 +2882,8 @@ case OP_Savepoint: {
 	Savepoint *pNew;
 	Savepoint *pSavepoint;
 	Savepoint *pTmp;
-	struct sql_txn *psql_txn = p->psql_txn;
+	struct txn *txn = in_txn();
+	struct sql_txn *psql_txn = txn != NULL ? txn->psql_txn : NULL;
 
 	if (psql_txn == NULL) {
 		assert(!box_txn());
@@ -2960,7 +2961,7 @@ case OP_Savepoint: {
 				assert(pSavepoint == psql_txn->pSavepoint);
 				psql_txn->pSavepoint = pSavepoint->pNext;
 			} else {
-				p->psql_txn->fk_deferred_count =
+				psql_txn->fk_deferred_count =
 					pSavepoint->tnt_savepoint->fk_deferred_count;
 			}
 		}
@@ -4802,8 +4803,9 @@ case OP_Param: {           /* out2 */
 case OP_FkCounter: {
 	if ((user_session->sql_flags & SQLITE_DeferFKs || pOp->p1 != 0) &&
 	    !p->auto_commit) {
-		assert(p->psql_txn != NULL);
-		p->psql_txn->fk_deferred_count += pOp->p2;
+		struct txn *txn = in_txn();
+		assert(txn != NULL && txn->psql_txn != NULL);
+		txn->psql_txn->fk_deferred_count += pOp->p2;
 	} else {
 		p->nFkConstraint += pOp->p2;
 	}
@@ -4825,8 +4827,9 @@ case OP_FkCounter: {
 case OP_FkIfZero: {         /* jump */
 	if ((user_session->sql_flags & SQLITE_DeferFKs || pOp->p1) &&
 	    !p->auto_commit) {
-		assert(p->psql_txn != NULL);
-		if (p->psql_txn->fk_deferred_count == 0)
+		struct txn *txn = in_txn();
+		assert(txn != NULL && txn->psql_txn != NULL);
+		if (txn->psql_txn->fk_deferred_count == 0)
 			goto jump_to_p2;
 	} else {
 		if (p->nFkConstraint == 0)
diff --git a/src/box/sql/vdbeInt.h b/src/box/sql/vdbeInt.h
index 7a7d3de..19b35b7 100644
--- a/src/box/sql/vdbeInt.h
+++ b/src/box/sql/vdbeInt.h
@@ -363,8 +363,6 @@ struct Vdbe {
 	 * ignoreRaised variable helps to track such situations
 	 */
 	u8 ignoreRaised;	/* Flag for ON CONFLICT IGNORE for triggers */
-	/** Data related to current transaction. */
-	struct sql_txn *psql_txn;
 	/** The auto-commit flag. */
 	bool auto_commit;
 	/**
diff --git a/src/box/sql/vdbeaux.c b/src/box/sql/vdbeaux.c
index ae73f25..3efe252 100644
--- a/src/box/sql/vdbeaux.c
+++ b/src/box/sql/vdbeaux.c
@@ -86,7 +86,6 @@ sql_alloc_txn(struct Vdbe *v)
 		return NULL;
 	}
 	txn->vdbe = v;
-	v->psql_txn = txn;
 	txn->pSavepoint = NULL;
 	txn->fk_deferred_count = 0;
 	return txn;
@@ -109,11 +108,7 @@ sql_vdbe_prepare(struct Vdbe *vdbe)
 			txn->psql_txn = sql_alloc_txn(vdbe);
 			if (txn->psql_txn == NULL)
 				return -1;
-		} else {
-			vdbe->psql_txn = txn->psql_txn;
 		}
-	} else {
-		vdbe->psql_txn = NULL;
 	}
 	return 0;
 }
@@ -2244,8 +2239,9 @@ sqlite3VdbeCloseStatement(Vdbe * p, int eOp)
 int
 sqlite3VdbeCheckFk(Vdbe * p, int deferred)
 {
-	if ((deferred && p->psql_txn != NULL &&
-	     p->psql_txn->fk_deferred_count > 0) ||
+	struct txn *txn = in_txn();
+	if ((deferred && txn != NULL && txn->psql_txn != NULL &&
+	     txn->psql_txn->fk_deferred_count > 0) ||
 	    (!deferred && p->nFkConstraint > 0)) {
 		p->rc = SQLITE_CONSTRAINT_FOREIGNKEY;
 		p->errorAction = ON_CONFLICT_ACTION_ABORT;
-- 
2.7.4