database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-21 00:42:43 +03:00
Code Activity

Invent a new, more thread-safe version of PQrequestCancel, called PQcancel.

Browse Source 
Use this new function in psql.  Implement query cancellation in psql for
Windows.  Code by Magnus Hagander, documentation and minor editorialization
by Tom Lane.
This commit is contained in:
Tom Lane
2004-10-30 23:11:27 +00:00
parent 80559fa9e9
commit 44e8a968e3
8 changed files with 399 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/interfaces/libpq/libpq-int.h
View File

@@ -12,7 +12,7 @@
* Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.95 2004/10/18 22:00:42 tgl Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.96 2004/10/30 23:11:27 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -346,6 +346,18 @@ struct pg_conn
PQExpBufferData workBuffer; /* expansible string */
};
/* PGcancel stores all data necessary to cancel a connection. A copy of this
* data is required to safely cancel a connection running on a different
* thread.
*/
struct pg_cancel
{
SockAddr raddr; /* Remote address */
int be_pid; /* PID of backend --- needed for cancels */
int be_key; /* key of backend --- needed for cancels */
};
/* String descriptions of the ExecStatusTypes.
* direct use of this array is deprecated; call PQresStatus() instead.
*/