Re: FAM based fswatcher - first try
On Wed, Jan 24, 2007 at 09:27:05PM +0200, Enrico Sersale wrote: > The original fswatcher doesn't create a new Watcher object if there already > is one for a path beeing added; it adds only a "listener", that is, it > increments a counter. When, removing all listeners, the counter becomes 0, > the Watcher object is removed from the watchers array. In this case, a Watcher keeps a NSCountedSet of clients/listeners. If you call fswatcher 10 times with the same path, a single watcher (with a single FAM request) will be created, modulo bugs of course. > '--daemon' is not intended to be used from the command line; it is only an > internal way to create a daemon using only NSTask instead of fork(); many > GNUstep daemons does this; gdnc, gpbs, etc. Ok, thanks for the explanation. Philippe -- Always think of something new; this helps you forget your last rotten idea. Seth Frankel ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
Re: FAM based fswatcher - first try
On 2007-01-24 19:05:01 +0200 Philippe Roussel <[EMAIL PROTECTED]> wrote: Hi all You will find attached a implementation of fswatcher using the FAM API. It should link either with FAM (1) or gamin (2), which are available on different flavors of unix. The goal is to take advantage of existing facilities and getting rid of timers. FAM and gamin use kernel helpers to avoid polling when they can. The code probably has some bugs and I'm not sure I followed exactly the different notifications semantics but it's a start. I tested it with GWorkspace and it seems to work well. Opinions ? The original fswatcher doesn't create a new Watcher object if there already is one for a path beeing added; it adds only a "listener", that is, it increments a counter. When, removing all listeners, the counter becomes 0, the Watcher object is removed from the watchers array. Philippe NB : fswatcher parameter '--daemon' results in the opposite, or I am missing something ? '--daemon' is not intended to be used from the command line; it is only an internal way to create a daemon using only NSTask instead of fork(); many GNUstep daemons does this; gdnc, gpbs, etc. 1 - http://oss.sgi.com/projects/fam/ 2 - http://www.gnome.org/~veillard/gamin/ ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
FAM based fswatcher - first try
Hi all You will find attached a implementation of fswatcher using the FAM API. It should link either with FAM (1) or gamin (2), which are available on different flavors of unix. The goal is to take advantage of existing facilities and getting rid of timers. FAM and gamin use kernel helpers to avoid polling when they can. The code probably has some bugs and I'm not sure I followed exactly the different notifications semantics but it's a start. I tested it with GWorkspace and it seems to work well. Opinions ? Philippe NB : fswatcher parameter '--daemon' results in the opposite, or I am missing something ? 1 - http://oss.sgi.com/projects/fam/ 2 - http://www.gnome.org/~veillard/gamin/ -- The power of accurate observation is frequently called cynicism by those who don't have it. George Bernard Shaw fswatcher-fam-0.5.tar.gz Description: Binary data ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
