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| -rw-r--r-- | ev.pod | 18 |
1 files changed, 18 insertions, 0 deletions
@@ -1498,6 +1498,22 @@ to fall back to regular polling again even with inotify, but changes are usually detected immediately, and if the file exists there will be no polling. +=head3 Inotify + +When C<inotify (7)> support has been compiled into libev (generally only +available on Linux) and present at runtime, it will be used to speed up +change detection where possible. The inotify descriptor will be created lazily +when the first C<ev_stat> watcher is being started. + +Inotify presense does not change the semantics of C<ev_stat> watchers +except that changes might be detected earlier, and in some cases, to avoid +making regular C<stat> calls. Even in the presense of inotify support +there are many cases where libev has to resort to regular C<stat> polling. + +(There is no support for kqueue, as apparently it cannot be used to +implement this functionality, due to the requirement of having a file +descriptor open on the object at all times). + =head3 The special problem of stat time resolution The C<stat ()> syscall only supports full-second resolution portably, and @@ -1562,6 +1578,8 @@ The filesystem path that is being watched. =back +=head3 Examples + Example: Watch C</etc/passwd> for attribute changes. static void |