NAME

       PAPI_get_virt_cyc -

       get virtual time counter value in clock cycles

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\n",e-s);
       *

Author

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