Provided by: libpapi-dev_5.4.3-2_amd64 bug


       PAPI_get_virt_usec -

       get virtual time counter values in microseconds


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

       See Also:






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