postgres.git / summary / log / commit / refs

commit    e70cd16f2223d76d4f00453eb2cc067d992ed4f3
Author:   Tom Lane <tgl@sss.pgh.pa.us>
Date:     Wed Nov 09 16:08:52 2022 +0000
First released in: 16.0, 11.19, 12.14, 13.10, 14.7, 15.2

    Doc: add comments about PreventInTransactionBlock/IsInTransactionBlock.
    
    Add a little to the header comments for these functions to make it
    clearer what guarantees about commit behavior are provided to callers.
    (See commit f92944137 for context.)
    
    Although this is only a comment change, it's really documentation
    aimed at authors of extensions, so it seems appropriate to back-patch.
    
    Yugo Nagata and Tom Lane, per further discussion of bug #17434.
    
    Discussion: https://postgr.es/m/17434-d9f7a064ce2a88a3@postgresql.org


 src/backend/access/transam/xact.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/backend/access/transam/xact.c b/src/backend/access/transam/xact.c
index 594d8da2cdc..408c87c6307 100644
--- a/src/backend/access/transam/xact.c
+++ b/src/backend/access/transam/xact.c
@@ -3448,6 +3448,10 @@ AbortCurrentTransaction(void)
  *	a transaction block, typically because they have non-rollback-able
  *	side effects or do internal commits.
  *
+ *	If this routine completes successfully, then the calling statement is
+ *	guaranteed that if it completes without error, its results will be
+ *	committed immediately.
+ *
  *	If we have already started a transaction block, issue an error; also issue
  *	an error if we appear to be running inside a user-defined function (which
  *	could issue more commands and possibly cause a failure after the statement
@@ -3573,6 +3577,10 @@ CheckTransactionBlock(bool isTopLevel, bool throwError, const char *stmtType)
  *	a transaction block than when running as single commands.  ANALYZE is
  *	currently the only example.
  *
+ *	If this routine returns "false", then the calling statement is
+ *	guaranteed that if it completes without error, its results will be
+ *	committed immediately.
+ *
  *	isTopLevel: passed down from ProcessUtility to determine whether we are
  *	inside a function.
  */


[parent: 362ba3e932c0]