centos man page for papi_get_virt_usec

PAPI_get_virt_usec(3)						       PAPI						     PAPI_get_virt_usec(3)

NAME
       PAPI_get_virt_usec -

       get virtual time counter values in microseconds

SYNOPSIS
Detailed Description
       @retval PAPI_ECNFLCT
	   If there is no master event set.
	   This will happen if the library has not been initialized, or for threaded
	   applications, if there has been no thread id function defined by the
	   PAPI_thread_init function.
       @retval PAPI_ENOMEM
	   For threaded applications, if there has not yet been any thread
	   specific master event created for the current thread, and if the
	   allocation of such an event set fails, the call will return PAPI_ENOMEM or PAPI_ESYS .

       This function returns the total number of virtual units from some
       arbitrary starting point.
       Virtual units accrue every time the process is running in user-mode on
       behalf of the process.
       Like the real time counters, this count is guaranteed to exist on every
       platform PAPI supports. However on some platforms, the resolution can be
       as bad as 1/Hz as defined by the operating system.
       @par Examples:

	       s = PAPI_get_virt_cyc();
	       your_slow_code();
	       e = PAPI_get_virt_cyc();
	       printf("Process has run for cycles: %lld
",e-s);
       *

       See Also:
	   PAPIF

	   PAPI

	   PAPI

	   PAPI_get_real_cyc

	   PAPI_get_virt_cyc

Author
       Generated automatically by Doxygen for PAPI from the source code.

Version 5.2.0.0 						  Tue Jun 17 2014					     PAPI_get_virt_usec(3)