archive/archived
Archived
1
0
Fork 0
Code Activity

inotify-backend: read queue size from procfs.

Browse source
This commit is contained in:
Henrik Hautakoski 2011-03-15 08:28:12 +02:00
parent 36358cf9d0
commit c92dc973df
1 changed files with 28 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

28
src/inotify-backend.c
View file

@ -9,9 +9,12 @@
*/ */
#include <unistd.h> #include <unistd.h>
#include <stdlib.h>
#include <errno.h> #include <errno.h>
#include <time.h> #include <time.h>
#include <fcntl.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <sys/types.h>
#include "inotify-backend.h" #include "inotify-backend.h"
#include "inotify-syscalls.h" #include "inotify-syscalls.h"
@ -19,16 +22,41 @@
#define WATCH_MASK (IN_MOVE | IN_CREATE | IN_DELETE | IN_ONLYDIR) #define WATCH_MASK (IN_MOVE | IN_CREATE | IN_DELETE | IN_ONLYDIR)
#define PROCFS_QSIZE "/proc/sys/fs/inotify/max_queued_events"
static int fd = -1; static int fd = -1;
static unsigned inotify_qsize = 256; static unsigned inotify_qsize = 256;
void read_unsigned_int(const char *filename, unsigned *val) {
int fd;
char buf[16];
fd = open(filename, O_RDONLY);
if (fd < 0)
return;
if (read(fd, buf, 15) > 0 && *buf) {
unsigned long tmp;
errno = 0;
tmp = strtoul(buf, NULL, 10);
if (!errno && tmp <= (unsigned)-1)
*val = tmp;
}
close(fd);
}
int inotify_backend_init(void) { int inotify_backend_init(void) {
if (fd >= 0) if (fd >= 0)
close(fd); close(fd);
fd = inotify_init(); fd = inotify_init();
if (fd < 0)
return -errno;
read_unsigned_int(PROCFS_QSIZE, &inotify_qsize);
return fd; return fd;
} }