database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-31 17:02:12 +03:00
Code Activity

Second round of FE/BE protocol changes. Frontend->backend messages now

Browse Source 
have length counts, and COPY IN data is packetized into messages.
This commit is contained in:
Tom Lane
2003-04-19 00:02:30 +00:00
parent 54b38d293e
commit bd8d441775
24 changed files with 1337 additions and 982 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/backend/tcop/dest.c
View File

@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/dest.c,v 1.51 2003/03/27 16:51:29 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/dest.c,v 1.52 2003/04/19 00:02:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -134,37 +134,6 @@ EndCommand(const char *commandTag, CommandDest dest)
}
}
/*
* These are necessary to sync communications between fe/be processes doing
* COPY rel TO stdout
*
* or
*
* COPY rel FROM stdin
*
* NOTE: the message code letters are changed at protocol version 2.0
* to eliminate possible confusion with data tuple messages.
*/
void
SendCopyBegin(void)
{
if (PG_PROTOCOL_MAJOR(FrontendProtocol) >= 2)
pq_putbytes("H", 1); /* new way */
else
pq_putbytes("B", 1); /* old way */
}
void
ReceiveCopyBegin(void)
{
if (PG_PROTOCOL_MAJOR(FrontendProtocol) >= 2)
pq_putbytes("G", 1); /* new way */
else
pq_putbytes("D", 1); /* old way */
/* We *must* flush here to ensure FE knows it can send. */
pq_flush();
}
/* ----------------
* NullCommand - tell dest that an empty query string was recognized
*