public static int sched_getcpu() {
final CLibrary lib = CLibrary.INSTANCE;
try {
final int ret = lib.sched_getcpu();
if (ret < 0) {
throw new IllegalStateException("sched_getcpu() failed; errno=" + Native.getLastError());
}
return ret;
} catch (LastErrorException e) {
throw new IllegalStateException("sched_getcpu() failed; errno=" + e.getErrorCode(), e);
} catch (UnsatisfiedLinkError ule) {
try {
final IntByReference cpu = new IntByReference();
final IntByReference node = new IntByReference();
final int ret = lib.syscall(318, cpu, node, null);
if (ret != 0) {
throw new IllegalStateException("getcpu() failed; errno=" + Native.getLastError());
}
return cpu.getValue();
} catch (LastErrorException lee) {
if (lee.getErrorCode() == 38 && Platform.is64Bit()) { // unknown call
final Pointer getcpuAddr = new Pointer((-10L << 20) + 1024L * 2L);
final Function getcpu = Function.getFunction(getcpuAddr, Function.C_CONVENTION);
final IntByReference cpu = new IntByReference();
if (getcpu.invokeInt(new Object[] {cpu, null, null}) < 0) {
throw new IllegalStateException("getcpu() failed; errno=" + Native.getLastError());
} else {
return cpu.getValue();
}
} else {
throw new IllegalStateException("getcpu() failed; errno=" + lee.getErrorCode(), lee);
}
}
}
}
