corepower_try
if (corepower_try(MSR_RAPL_POWER_UNIT, "MSR_RAPL_POWER_UNIT") == 0)
corepower_try(MSR_PKG_ENERGY_STATUS, "MSR_PKG_ENERGY_STATUS")) {
corepower_try(MSR_DRAM_ENERGY_STATUS, "MSR_DRAM_ENERGY_STATUS")) {
corepower_try(MSR_PP0_ENERGY_STATUS, "MSR_PP0_ENERGY_STATUS")) {
corepower_try(MSR_PP1_ENERGY_STATUS, "MSR_PP1_ENERGY_STATUS")) {
corepower_try(MSR_PLATFORM_ENERGY_COUNTER, "MSR_PLATFORM_ENERGY_COUNTER") &&
static int corepower_try(u_int msr, char *name);