PAPI_get_virt_nsec - Get virtual time counter values in nanoseconds.

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Version 7.1.0.0                                  Thu Dec 14 2023                           PAPI_get_virt_nsec(3)

ReturnvaluesPAPI_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.

       PAPI_get_virt_nsec - Get virtual time counter values in nanoseconds.