PAPI_get_virt_cyc(3) PAPI PAPI_get_virt_cyc(3)NAMEPAPI_get_virt_cyc-
get virtual time counter value in clock cycles
SYNOPSISDetailed Description
Return values:
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.
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.
Examples:
s = PAPI_get_virt_cyc();
your_slow_code();
e = PAPI_get_virt_cyc();
printf('Process has run for cycles: %lld\n',e-s);
Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.1.1.0 Tue May 21 2013 PAPI_get_virt_cyc(3)
