GRASS 8 Programmer's Manual 8.6.0dev(2026)-f6f2c534ea
Loading...
Searching...
No Matches
shutdown.c
Go to the documentation of this file.
1/*!
2 * \file db/dbmi_client/shutdown.c
3 *
4 * \brief DBMI Library (client) - shutdown database connection
5 *
6 * (C) 1999-2008 by the GRASS Development Team
7 *
8 * This program is free software under the GNU General Public
9 * License (>=v2). Read the file COPYING that comes with GRASS
10 * for details.
11 *
12 * \author Joel Jones (CERL/UIUC), Radim Blazek
13 */
14
15#include <stdlib.h>
16
17#include <grass/dbmi.h>
18#include <grass/spawn.h>
19#include "macros.h"
20
21/*!
22 \brief Closedown the driver, and free the driver structure
23
24 <b>Note:</b> the management of the memory for the driver structure
25 probably should be handled differently.
26
27 db_start_driver() could take a pointer to driver structure as an
28 argument, instead of returning the pointer to allocated then there
29 would be no hidden free required
30
31 \param driver pointer to dbDriver to be freed
32
33 \return 0 on success
34 \return -1 on error
35 */
37{
38 int status;
39
42
43 /* close the communication FILEs */
44 fclose(driver->send);
45 fclose(driver->recv);
46
47 driver->send = NULL;
48 driver->recv = NULL;
49
50 /* wait for the driver to finish */
51 status = -1;
52
53 /* convert status according to return code of G_wait() */
54 status = G_wait(driver->pid) == -1 ? -1 : 0;
55
56 driver->pid = 0;
57
58 /* remove also error handler if defined */
60
61 /* free the driver structure. THIS IS GOOFY */
63
64 return status;
65}
#define NULL
Definition ccmath.h:32
Main header of GRASS DataBase Management Interface.
#define DB_PROC_SHUTDOWN_DRIVER
Definition dbmi.h:35
void db_free(void *)
Free allocated memory.
void db__set_protocol_fds(FILE *, FILE *)
?
void db_unset_error_handler_driver(dbDriver *)
Remove error handler before closing the driver.
int G_wait(int i_pid)
Definition spawn.c:950
#define DB_START_PROCEDURE_CALL(x)
Definition macros.h:2
int db_shutdown_driver(dbDriver *driver)
Closedown the driver, and free the driver structure.
Definition shutdown.c:36