pmc_release
int pmc_release(pmc_id_t _pmc);
if (pmc_release(pmcid) < 0)
if (pmc_release(ev->ev_pmcid) < 0)
if (pmc_release(ev->ev_pmcid) < 0)
pmc_release(ev->ev_pmcid);
pmc_release(ev->ev_pmcid);