Alternatives for CLOCK_MONOTONIC

amitks21 · #1 (**permalink**) 11-16-2006

Hi,

I need to develop timeout functionality in my code, which is not affected by system's time changes.Unfortunately I dont have CLOCK_MONOTONIC support in my OS.

Are there any alternatives?

jim mcnamara · #2 (**permalink**) 11-16-2006

What options does clock_gettime() support for your system?

amitks21 · #3 (**permalink**) 11-17-2006

it supports only CLOCK_REALTIME

though CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID are defined too in bits/time.h, but clock_gettime() gives an error "Invalid argument" for these...

------from bits/time.h-----
/* Identifier for system-wide realtime clock. */
# define CLOCK_REALTIME 0
/* High-resolution timer from the CPU. */
# define CLOCK_PROCESS_CPUTIME_ID 2
/* Thread-specific CPU-time clock. */
# define CLOCK_THREAD_CPUTIME_ID 3
-----------------------------

Perderabo · #4 (**permalink**) 11-17-2006

Just use setitimer()/getitimer().

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