POSIX:sys/times

lastmod 2026-11-10created 2015-08-292 edits

sys/times.h is a POSIX header that declares the times() function and struct tms, which report the CPU time used by a process and its child processes. It returns user-mode and kernel-mode time in clock ticks; if you need wall-clock time, use gettimeofday() from the similarly named sys/time.h. Neither header exists in Visual C++ on Windows, so when porting you have to write replacements using GetSystemTimeAsFileTime and the like.

Favorite site

• Stackoverflow: How to use sys/time.h in window?
  • Stackoverflow: What should I use to replace gettimeofday() on Windows?
  • Stackoverflow: how to use gettimeofday() or something equivalent with Visual Studio C++ 2008?