public static void sched_setaffinity(final BitSet affinity) {
   final CLibrary lib = CLibrary.INSTANCE;
   final cpu_set_t cpuset = new cpu_set_t();
   final int size =
       version.isSameOrNewer(VERSION_2_6) ? cpu_set_t.SIZE_OF_CPU_SET_T : NativeLong.SIZE;
   final long[] bits = affinity.toLongArray();
   for (int i = 0; i < bits.length; i++) {
     if (Platform.is64Bit()) {
       cpuset.__bits[i].setValue(bits[i]);
     } else {
       cpuset.__bits[i * 2].setValue(bits[i] & 0xFFFFFFFFL);
       cpuset.__bits[i * 2 + 1].setValue((bits[i] >>> 32) & 0xFFFFFFFFL);
     }
   }
   try {
     if (lib.sched_setaffinity(0, size, cpuset) != 0) {
       throw new IllegalStateException(
           "sched_setaffinity(0, "
               + size
               + ", 0x"
               + Utilities.toHexString(affinity)
               + ") failed; errno="
               + Native.getLastError());
     }
   } catch (LastErrorException e) {
     throw new IllegalStateException(
         "sched_setaffinity(0, "
             + size
             + ", 0x"
             + Utilities.toHexString(affinity)
             + ") failed; errno="
             + e.getErrorCode(),
         e);
   }
 }
 public static int syscall(int number, Object... args) {
   final CLibrary lib = CLibrary.INSTANCE;
   try {
     final int ret = lib.syscall(number, args);
     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);
   }
 }
 public static int getpid() {
   final CLibrary lib = CLibrary.INSTANCE;
   try {
     final int ret = lib.getpid();
     if (ret < 0) {
       throw new IllegalStateException("getpid() failed; errno=" + Native.getLastError());
     }
     return ret;
   } catch (LastErrorException e) {
     throw new IllegalStateException("getpid() failed; errno=" + e.getErrorCode(), e);
   }
 }
  public static @NotNull cpu_set_t sched_getaffinity() {
    final CLibrary lib = CLibrary.INSTANCE;
    final cpu_set_t cpuset = new cpu_set_t();
    final int size =
        version.isSameOrNewer(VERSION_2_6) ? cpu_set_t.SIZE_OF_CPU_SET_T : NativeLong.SIZE;

    try {
      if (lib.sched_getaffinity(0, size, cpuset) != 0) {
        throw new IllegalStateException(
            "sched_getaffinity(0, " + size + ", cpuset) failed; errno=" + Native.getLastError());
      }
    } catch (LastErrorException e) {
      throw new IllegalStateException(
          "sched_getaffinity(0, (" + size + ") , cpuset) failed; errno=" + e.getErrorCode(), e);
    }
    return cpuset;
  }
  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);
        }
      }
    }
  }