NAME

SYNOPSIS

#include <perfmon/pfmlib.h>

int pfm_get_event_next(int idx);

DESCRIPTION

Events are grouped in tables within the libary. A table usually corresponds to a PMU model or family. The library contains support for multiple PMU models, thus it has multiple tables. Based on the host hardware and software environments, tables get activated when the library is initialized via pfm_initialize(). Events from activated tables are called active events. Events from non-activated tables are called supported events.

Event identifiers are usually retrieved via pfm_find_event() or when encoding events.

To iterate over a list of events for a given PMU model, all that is needed is an initial identifier for the PMU. It could be the identifier of the first event obainted via pfm_get_pmu_info().

The pfm_get_event_next() function returns the identifier of next supported event after the one passed in idx. This iterator stops when the last event for the PMU is passed as argument, in which case the function returns -1.

void list_pmu_events(pfm_pmu_t pmu)
{
   struct pfm_event_info info;
   struct pfm_pmu_info pinfo;
   int i, ret;

   memset(&info, 0, sizeof(info));
   memset(&pinfo, 0, sizeof(pinfo));

   info.size = sizeof(info);
   pinfo.size = sizeof(pinfo);

   ret = pfm_get_pmu_info(pmu, &pinfo);
   if (ret != PFM_SUCCESS)
      errx(1, "cannot get pmu info");

   for (i = pinfo.first_event; i != -1; i = pfm_get_event_next(i)) {
      ret = pfm_get_event_info(i, &info);
      if (ret != PFM_SUCCESS)
        errx(1, "cannot get event info");

        printf("%s Event: %s::%s\n",
               pinfo.present ? "Active" : "Supported",
               pinfo.name, info.name);
  }
}

RETURN

ERRORS

SEE ALSO

AUTHOR

Index

NAME

SYNOPSIS

DESCRIPTION

RETURN

ERRORS

SEE ALSO

AUTHOR