mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 12:32:27 +01:00
d22b1a0b35
added: storage/connect/inihandl.h modified: storage/connect/CMakeLists.txt storage/connect/connect.h storage/connect/ha_connect.cc storage/connect/inihandl.c storage/connect/osutil.h storage/connect/tabsys.cpp storage/connect/user_connect.cc
158 lines
4.5 KiB
C++
158 lines
4.5 KiB
C++
/* Copyright (C) Olivier Bertrand 2004 - 2012
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
/**
|
|
@file user_connect.cc
|
|
|
|
@brief
|
|
Implements the user_connect class.
|
|
|
|
@details
|
|
To support multi_threading, each query creates and use a PlugDB "user"
|
|
that is a connection with its personnal memory allocation.
|
|
|
|
@note
|
|
|
|
*/
|
|
|
|
/****************************************************************************/
|
|
/* Author: Olivier Bertrand -- bertrandop@gmail.com -- 2004-2012 */
|
|
/****************************************************************************/
|
|
#ifdef USE_PRAGMA_IMPLEMENTATION
|
|
#pragma implementation // gcc: Class implementation
|
|
#endif
|
|
|
|
#define DONT_DEFINE_VOID
|
|
#define MYSQL_SERVER
|
|
#include "sql_class.h"
|
|
#undef OFFSET
|
|
|
|
#define NOPARSE
|
|
#include "osutil.h"
|
|
#include "global.h"
|
|
#include "plgdbsem.h"
|
|
#include "connect.h"
|
|
#include "user_connect.h"
|
|
#include "mycat.h"
|
|
|
|
extern "C" char plgxini[];
|
|
extern int xtrace;
|
|
|
|
/****************************************************************************/
|
|
/* Initialize the user_connect static member. */
|
|
/****************************************************************************/
|
|
PCONNECT user_connect::to_users= NULL;
|
|
|
|
/* -------------------------- class user_connect -------------------------- */
|
|
|
|
/****************************************************************************/
|
|
/* Constructor. */
|
|
/****************************************************************************/
|
|
user_connect::user_connect(THD *thd, const char *dbn)
|
|
{
|
|
thdp= thd;
|
|
next= NULL;
|
|
previous= NULL;
|
|
g= NULL;
|
|
last_query_id= 0;
|
|
count= 0;
|
|
|
|
// Statistics
|
|
nrd= fnd= nfd= 0;
|
|
tb1= 0;
|
|
} // end of user_connect constructor
|
|
|
|
|
|
/****************************************************************************/
|
|
/* Destructor. */
|
|
/****************************************************************************/
|
|
user_connect::~user_connect()
|
|
{
|
|
// Terminate CONNECT and Plug-like environment, should return NULL
|
|
g= CntExit(g);
|
|
} // end of user_connect destructor
|
|
|
|
|
|
/****************************************************************************/
|
|
/* Initialization. */
|
|
/****************************************************************************/
|
|
bool user_connect::user_init()
|
|
{
|
|
// Initialize Plug-like environment
|
|
PACTIVITY ap= NULL;
|
|
PDBUSER dup= NULL;
|
|
|
|
// Areasize= 64M because of VEC tables. Should be parameterisable
|
|
g= PlugInit(NULL, 67108864);
|
|
|
|
// Check whether the initialization is complete
|
|
if (!g || !g->Sarea || PlugSubSet(g, g->Sarea, g->Sarea_Size)
|
|
|| !(dup= PlgMakeUser(g))) {
|
|
if (g)
|
|
printf("%s\n", g->Message);
|
|
|
|
int rc= PlugExit(g);
|
|
g= NULL;
|
|
free(dup);
|
|
return true;
|
|
} // endif g->
|
|
|
|
dup->Catalog= new MYCAT(NULL);
|
|
|
|
ap= new ACTIVITY;
|
|
memset(ap, 0, sizeof(ACTIVITY));
|
|
strcpy(ap->Ap_Name, "CONNECT");
|
|
g->Activityp= ap;
|
|
g->Activityp->Aptr= dup;
|
|
next= to_users;
|
|
to_users= this;
|
|
|
|
if (next)
|
|
next->previous= this;
|
|
|
|
last_query_id= thdp->query_id;
|
|
count= 1;
|
|
return false;
|
|
} // end of user_init
|
|
|
|
|
|
void user_connect::SetHandler(ha_connect *hc)
|
|
{
|
|
PDBUSER dup= (PDBUSER)g->Activityp->Aptr;
|
|
MYCAT *mc= (MYCAT*)dup->Catalog;
|
|
mc->SetHandler(hc);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* Check whether we begin a new query and if so cleanup the previous one. */
|
|
/****************************************************************************/
|
|
bool user_connect::CheckCleanup(void)
|
|
{
|
|
if (thdp->query_id > last_query_id) {
|
|
PlugCleanup(g, true);
|
|
PlugSubSet(g, g->Sarea, g->Sarea_Size);
|
|
g->Xchk = NULL;
|
|
g->Createas = 0;
|
|
last_query_id= thdp->query_id;
|
|
|
|
if (xtrace)
|
|
printf("=====> Begin new query %llu\n", last_query_id);
|
|
|
|
return true;
|
|
} // endif query_id
|
|
|
|
return false;
|
|
} // end of CheckCleanup
|
|
|