database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-02 04:21:28 +03:00
Code Activity

Another round of protocol changes. Backend-to-frontend messages now all

Browse Source 
have length words.  COPY OUT reimplemented per new protocol: it doesn't
need \. anymore, thank goodness.  COPY BINARY to/from frontend works,
at least as far as the backend is concerned --- libpq's PQgetline API
is not up to snuff, and will have to be replaced with something that is
null-safe.  libpq uses message length words for performance improvement
(no cycles wasted rescanning long messages), but not yet for error
recovery.
This commit is contained in:
Tom Lane
2003-04-22 00:08:07 +00:00
parent ca944bd2d4
commit 5ed27e35f3
22 changed files with 782 additions and 357 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/interfaces/libpq/libpq-int.h
View File

@@ -12,7 +12,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: libpq-int.h,v 1.62 2003/04/19 00:02:30 tgl Exp $
* $Id: libpq-int.h,v 1.63 2003/04/22 00:08:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -56,7 +56,7 @@ typedef int ssize_t; /* ssize_t doesn't exist in VC (atleast
* pqcomm.h describe what the backend knows, not what libpq knows.
*/
#define PG_PROTOCOL_LIBPQ PG_PROTOCOL(3,101) /* XXX temporary value */
#define PG_PROTOCOL_LIBPQ PG_PROTOCOL(3,102) /* XXX temporary value */
/*
* POSTGRES backend dependent Constants.
@@ -216,7 +216,8 @@ struct pg_conn
* is listening on; if NULL, uses a
* default constructed from pgport */
char *pgtty; /* tty on which the backend messages is
* displayed (NOT ACTUALLY USED???) */
* displayed (OBSOLETE, NOT USED) */
char *connect_timeout; /* connection timeout (numeric string) */
char *pgoptions; /* options to start the backend with */
char *dbName; /* database name */
char *pguser; /* Postgres username and password, if any */
@@ -232,6 +233,10 @@ struct pg_conn
/* Status indicators */
ConnStatusType status;
PGAsyncStatusType asyncStatus;
char copy_is_binary; /* 1 = copy binary, 0 = copy text */
int copy_already_done; /* # bytes already returned in COPY OUT */
int nonblocking; /* whether this connection is using a
* blocking socket to the backend or not */
Dllist *notifyList; /* Notify msgs not yet handed to
* application */
@@ -246,6 +251,7 @@ struct pg_conn
int be_key; /* key of backend --- needed for cancels */
char md5Salt[4]; /* password salt received from backend */
char cryptSalt[2]; /* password salt received from backend */
int client_encoding; /* encoding id */
PGlobjfuncs *lobjfuncs; /* private state for large-object access
* fns */
@@ -258,9 +264,6 @@ struct pg_conn
int inEnd; /* offset to first position after avail
* data */
int nonblocking; /* whether this connection is using a
* blocking socket to the backend or not */
/* Buffer for data not yet sent to backend */
char *outBuffer; /* currently allocated buffer */
int outBufSize; /* allocated size of buffer */
@@ -291,10 +294,6 @@ struct pg_conn
/* Buffer for receiving various parts of messages */
PQExpBufferData workBuffer; /* expansible string */
int client_encoding; /* encoding id */
char *connect_timeout;
};
/* String descriptions of the ExecStatusTypes.
@@ -330,6 +329,7 @@ extern void pqClearAsyncResult(PGconn *conn);
* for Get, EOF merely means the buffer is exhausted, not that there is
* necessarily any error.
*/
extern int pqCheckInBufferSpace(int bytes_needed, PGconn *conn);
extern int pqGetc(char *result, PGconn *conn);
extern int pqPutc(char c, PGconn *conn);
extern int pqGets(PQExpBuffer buf, PGconn *conn);