site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com % grep TIMER /usr/include/unistd.h #define _POSIX_TIMERS (-1) /* [TMR] */ So no. The proper way to feature test POSIX interfaces is: -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... On Jan 5, 2008, at 10:06 AM, Steve Checkoway wrote: On Jan 5, 2008, at 8:53 AM, Andre-John Mas wrote: Could someone tell me whether MacOS X supports POSIX timers? If you mean the api specified in <http://www.jaluna.com/doc/c5/html/Overview/x5408.html

(just the first hit on google), then the answer would seem to be no: $ find /usr/include -name '*.h'|xargs egrep 'clock_(settime|gettime| getres)|timer_(create|delete|settime|gettime|getoverrun)|nanosleep'

/usr/include/php/ext/standard/ basic_functions.h:PHP_FUNCTION(time_nanosleep); /usr/include/php/main/php_config.h:/* Define if you have the nanosleep function. */ /usr/include/time.h:int nanosleep(const struct timespec *, struct timespec *) __DARWIN_ALIAS_C(nanosleep); Only nanosleep seems to be there. Specifically, all POSIX functionality should be feature tested using <unistd.h> macros before you assume it's there; for POSIX Timers: #include <unistd.h> ... #if defined(_POSIX_TIMERS) && (_POSIX_TIMERS - 200112L) >= 0L /* This POSIX feature is supported */ ... #else /* This POSIX feature is not supported; use an alternate implementation */ ... #endif This email sent to site_archiver@lists.apple.com