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Fix libpq memory leak during PQreset() --- closePGconn() was not

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freeing all transient state of the PGconn object.
This commit is contained in:
Tom Lane 2005-07-13 15:25:55 +00:00
parent 5d0a43c585
commit faea3db958
1 changed files with 30 additions and 2 deletions
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32
src/interfaces/libpq/fe-connect.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.313 2005/06/27 02:04:26 neilc Exp $ * $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.314 2005/07/13 15:25:55 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -1874,6 +1874,8 @@ makeEmptyPGconn(void)
/* /*
* freePGconn * freePGconn
* - free the PGconn data structure * - free the PGconn data structure
*
* When changing/adding to this function, see also closePGconn!
*/ */
static void static void
freePGconn(PGconn *conn) freePGconn(PGconn *conn)
@ -1921,6 +1923,7 @@ freePGconn(PGconn *conn)
free(conn->krbsrvname); free(conn->krbsrvname);
#endif #endif
/* Note that conn->Pfdebug is not ours to close or free */ /* Note that conn->Pfdebug is not ours to close or free */
freeaddrinfo_all(conn->addrlist_family, conn->addrlist);
notify = conn->notifyHead; notify = conn->notifyHead;
while (notify != NULL) while (notify != NULL)
{ {
@ -1929,7 +1932,6 @@ freePGconn(PGconn *conn)
notify = notify->next; notify = notify->next;
free(prev); free(prev);
} }
freeaddrinfo_all(conn->addrlist_family, conn->addrlist);
pstatus = conn->pstatus; pstatus = conn->pstatus;
while (pstatus != NULL) while (pstatus != NULL)
{ {
@ -1952,10 +1954,15 @@ freePGconn(PGconn *conn)
/* /*
* closePGconn * closePGconn
* - properly close a connection to the backend * - properly close a connection to the backend
*
* Release all transient state, but NOT the connection parameters.
*/ */
static void static void
closePGconn(PGconn *conn) closePGconn(PGconn *conn)
{ {
PGnotify *notify;
pgParameterStatus *pstatus;
/* /*
* Note that the protocol doesn't allow us to send Terminate messages * Note that the protocol doesn't allow us to send Terminate messages
* during the startup phase. * during the startup phase.
@ -1991,6 +1998,27 @@ closePGconn(PGconn *conn)
* absent */ * absent */
conn->asyncStatus = PGASYNC_IDLE; conn->asyncStatus = PGASYNC_IDLE;
pqClearAsyncResult(conn); /* deallocate result and curTuple */ pqClearAsyncResult(conn); /* deallocate result and curTuple */
freeaddrinfo_all(conn->addrlist_family, conn->addrlist);
conn->addrlist = NULL;
conn->addr_cur = NULL;
notify = conn->notifyHead;
while (notify != NULL)
{
PGnotify *prev = notify;
notify = notify->next;
free(prev);
}
conn->notifyHead = NULL;
pstatus = conn->pstatus;
while (pstatus != NULL)
{
pgParameterStatus *prev = pstatus;
pstatus = pstatus->next;
free(prev);
}
conn->pstatus = NULL;
if (conn->lobjfuncs) if (conn->lobjfuncs)
free(conn->lobjfuncs); free(conn->lobjfuncs);
conn->lobjfuncs = NULL; conn->lobjfuncs = NULL;