Alternative for clock_gettime(CLOCK_REALTIME, &start); ?

Not available. Here's a discussion of options.

Hello M. rudiliu and M. MrHoffman,

long ago, once upon a time, before the mob realized those calls were missing (1) (while porting some stuff from (and to) FB , e.g POSIX.1-2008, mandatory stuff) I wrote a draft about this issue:

clock_gettime_stub.c

posix-realtime-stub.c

now, that was only a quick study ; but I think, all the pointers you might need to, for writing a better glueish-interface are there.

reading the file back ; (it's been a while) ; there is a missing call to : mach_port_deallocate(mach_task_self(), clk); don't forget to let go your conn when finished, buggy-me.

1- because few folks were using it ; and then it spread to third-party libs, and so on...

-- Best and enjoy!