Return the resolution (precision) of the specified clock *clk_id*.
+ Availability: Unix.
+
.. versionadded:: 3.3
Return the time of the specified clock *clk_id*.
+ Availability: Unix.
+
.. versionadded:: 3.3
Set the time of the specified clock *clk_id*.
+ Availability: Unix.
+
.. versionadded:: 3.3
hardware source, and may give close to nanosecond resolution. CLOCK_HIGHRES
is the nonadjustable, high-resolution clock.
+ Availability: Solaris.
+
.. versionadded:: 3.3
Clock that cannot be set and represents monotonic time since some
unspecified starting point.
+ Availability: Unix.
+
.. versionadded:: 3.3
High-resolution per-process timer from the CPU.
+ Availability: Unix.
+
.. versionadded:: 3.3
System-wide real-time clock. Setting this clock requires appropriate
privileges.
+ Availability: Unix.
+
.. versionadded:: 3.3
Thread-specific CPU-time clock.
+ Availability: Unix.
+
.. versionadded:: 3.3