> On 5 Nov 2014, at 14:08, Peter <magn...@web.de> wrote: > > http://stackoverflow.com/questions/12343833/cocoa-monitor-a-file-for-modifications/26304208#26304208 > > has some info on this.
Thanks a lot. Got it working now. Mit freundlichen Grüßen Gerriet. > > ___ Peter Hartmann ________ > > mailto:hphartm...@justmail.de > > > Am 05.11.2014 um 07:50 schrieb Gerriet M. Denkmann <gerr...@mdenkmann.de>: > >> I want to monitor a file for changed content. >> Polling is generally not a good idea, so I tried dispatch_source. >> >> But it does not work. >> >> Here the code: >> >> static NSString *const kTestPath = @"/tmp/a.test"; >> >> - (void)applicationDidFinishLaunching:(NSNotification *)aNotification >> { >> const char *filename = kTestPath.fileSystemRepresentation; >> int fd = open(filename, O_RDONLY); >> fcntl(fd, F_SETFL, O_NONBLOCK); >> uintptr_t fD = (uintptr_t)fd; >> dispatch_queue_t queue = >> dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); >> const uint64_t flags = DISPATCH_VNODE_WRITE | DISPATCH_VNODE_LINK; >> dispatch_source_t my_source = >> dispatch_source_create(DISPATCH_SOURCE_TYPE_VNODE, fD, flags, queue); >> dispatch_source_set_event_handler(my_source, ^{ [self fileDidChange]; } >> ); >> dispatch_resume(my_source); >> } >> >> - (void)fileDidChange >> { >> NSLog(@"%s",__FUNCTION__); // never seen >> } >> >> - (IBAction)buttonClicked: sender >> { >> static NSUInteger seqq = 0; >> seqq++; >> >> const char *stats_temp_file = "/tmp/a.temp"; >> FILE *fp = fopen(stats_temp_file, "w"); >> fprintf(fp, "%lu\n", seqq); >> (void)fclose(fp); >> >> const char *filename = kTestPath.fileSystemRepresentation; >> int a = rename(stats_temp_file, filename); >> } >> >> What am I doing wrong? (Writing directly to kTestPath without rename() also >> does not work). >> >> Gerriet. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
