mirror of
https://github.com/systemd/systemd.git
synced 2024-11-06 08:26:52 +03:00
c81b35c08b
Here we replace the various fgets() with a mmap() call for the config file reading, due to the reported performance problems with klibc. Thanks to Patrick's testing, it makes a very small, close to nothing speed gain for libc users, but a 6 times speed increase for klibc users with a 1000 line config file. I've created a udev_lib.[hc] for this and also moved all the generic stuff from udev.h in there and uninlined the functions.
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
|
|
* udev_lib - generic stuff used by udev
|
|
*
|
|
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
|
|
*
|
|
*
|
|
* 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.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef _UDEV_LIB_H_
|
|
#define _UDEV_LIB_H_
|
|
|
|
|
|
#define strfieldcpy(to, from) \
|
|
do { \
|
|
to[sizeof(to)-1] = '\0'; \
|
|
strncpy(to, from, sizeof(to)-1); \
|
|
} while (0)
|
|
|
|
#define strfieldcat(to, from) \
|
|
do { \
|
|
to[sizeof(to)-1] = '\0'; \
|
|
strncat(to, from, sizeof(to) - strlen(to)-1); \
|
|
} while (0)
|
|
|
|
#define strfieldcpymax(to, from, maxsize) \
|
|
do { \
|
|
to[maxsize-1] = '\0'; \
|
|
strncpy(to, from, maxsize-1); \
|
|
} while (0)
|
|
|
|
#define strfieldcatmax(to, from, maxsize) \
|
|
do { \
|
|
to[maxsize-1] = '\0'; \
|
|
strncat(to, from, maxsize - strlen(to)-1); \
|
|
} while (0)
|
|
|
|
#define strintcat(to, i) \
|
|
do { \
|
|
to[sizeof(to)-1] = '\0'; \
|
|
snprintf((to) + strlen(to), sizeof(to) - strlen(to)-1, "%u", i); \
|
|
} while (0)
|
|
|
|
#define strintcatmax(to, i, maxsize) \
|
|
do { \
|
|
to[maxsize-1] = '\0'; \
|
|
snprintf((to) + strlen(to), maxsize - strlen(to)-1, "%u", i); \
|
|
} while (0)
|
|
|
|
#define foreach_strpart(str, separator, pos, len) \
|
|
for(pos = str, len = 0; \
|
|
(pos) < ((str) + strlen(str)); \
|
|
pos = pos + len + strspn(pos, separator), len = strcspn(pos, separator)) \
|
|
if (len > 0)
|
|
|
|
|
|
extern char *get_action(void);
|
|
extern char *get_devpath(void);
|
|
extern char *get_seqnum(void);
|
|
extern char *get_subsystem(char *subsystem);
|
|
extern int file_map(const char *filename, char **buf, size_t *bufsize);
|
|
extern void file_unmap(char *buf, size_t bufsize);
|
|
extern size_t buf_get_line(char *buf, size_t buflen, size_t cur);
|
|
|
|
|
|
#endif
|