rsyslog/rsyslog
1
0
Fork 0
mirror of https://github.com/rsyslog/rsyslog.git synced 2025-12-16 13:20:41 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #4844 from rgerhards/tmpmaster

Browse Source 
imfile: do_inotify() use only one blocking call
This commit is contained in:
Rainer Gerhards 2022-04-04 12:08:37 +02:00 committed by GitHub
commit fb2695c529
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 61 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
plugins/imfile/imfile.c
View File

@ -2444,10 +2444,11 @@ do_inotify(void)
int rd;
int currev;
static int last_timeout = 0;
struct pollfd pollfd;
DEFiRet;
CHKiRet(wdmapInit());
ino_fd = inotify_init();
ino_fd = inotify_init1(IN_NONBLOCK);
if(ino_fd < 0) {
LogError(errno, RS_RET_INOTIFY_INIT_FAILED, "imfile: Init inotify "
"instance failed ");
@ -2458,18 +2459,26 @@ do_inotify(void)
do_initial_poll_run();
while(glbl.GetGlobalInputTermState() == 0) {
if(runModConf->haveReadTimeouts) {
int r;
struct pollfd pollfd;
pollfd.fd = ino_fd;
pollfd.events = POLLIN;
do {
if (runModConf->haveReadTimeouts)
r = poll(&pollfd, 1, runModConf->timeoutGranularity);
} while(r == -1 && errno == EINTR);
else
r = poll(&pollfd, 1, -1);
if (r == -1 && errno == EINTR) {
DBGPRINTF("do_inotify interrupted while polling on ino_fd\n");
continue;
}
if(r == 0) {
DBGPRINTF("readTimeouts are configured, checking if some apply\n");
if (runModConf->haveReadTimeouts) {
fs_node_walk(runModConf->conf_tree, poll_timeouts);
last_timeout = time(NULL);
}
continue;
} else if (r == -1) {
LogError(errno, RS_RET_INTERNAL_ERROR,
@ -2484,6 +2493,14 @@ do_inotify(void)
/* we do not abort, as this would render the whole input defunct */
continue;
}
else {
// process timeouts always, ino_fd may be too busy to ever have timeout occur from poll
if(runModConf->haveReadTimeouts) {
int now = time(NULL);
if(last_timeout + (runModConf->timeoutGranularity / 1000) > now) {
fs_node_walk(runModConf->conf_tree, poll_timeouts);
last_timeout = time(NULL);
}
}
rd = read(ino_fd, iobuf, sizeof(iobuf));
if(rd == -1 && errno == EINTR) {
@ -2491,6 +2508,9 @@ do_inotify(void)
DBGPRINTF("EINTR received during inotify, restarting poll\n");
continue;
}
if (rd == -1 && errno == EWOULDBLOCK) {
continue;
}
if(rd < 0) {
LogError(errno, RS_RET_IO_ERROR, "imfile: error during inotify - ignored");
continue;
@ -2506,10 +2526,6 @@ do_inotify(void)
in_processEvent(savecast.ev);
currev += sizeof(struct inotify_event) + savecast.ev->len;
}
int now = time(NULL);
if(last_timeout + (runModConf->timeoutGranularity / 1000) > now) {
fs_node_walk(runModConf->conf_tree, poll_timeouts);
last_timeout = time(NULL);
}
}