//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	(*mask)[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
}

func sigdelset(mask *sigset, i int) {
	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
}

//go:nosplit
func sigfillset(mask *[4]uint32) {
	(*mask)[0], (*mask)[1], (*mask)[2], (*mask)[3] = ^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)

	clusterCIDR *net.IPNet
	// clusterMaskSize is the mask size, in bits, assigned to the cluster
	// caches the mask size to avoid the penalty of calling clusterCIDR.Mask.Size()
	clusterMaskSize int
	// nodeMask is the network mask assigned to the nodes
	nodeMask net.IPMask
	// nodeMaskSize is the mask size, in bits,assigned to the nodes
	// caches the mask size to avoid the penalty of calling nodeMask.Size()
	nodeMaskSize int

  static int getHashPrefix(int value, int mask) {
    return value & ~mask;
  }

  /** Returns the index, or 0 if the entry is "null". */
  static int getNext(int entry, int mask) {
    return entry & mask;
  }

  /** Returns a new value combining the prefix and suffix using the given mask. */
  static int maskCombine(int prefix, int suffix, int mask) {
    return (prefix & ~mask) | (suffix & mask);
  }

  static int remove(

#include <time.h>
#include <unistd.h>

extern void IntoGoAndBack();

int CheckBlocked() {
	sigset_t mask;
	sigprocmask(SIG_BLOCK, NULL, &mask);
	return sigismember(&mask, SIGIO);
}

static void* sigthreadfunc(void* unused) {
	sigset_t mask;
	sigemptyset(&mask);
	sigaddset(&mask, SIGIO);
	sigprocmask(SIG_BLOCK, &mask, NULL);
	IntoGoAndBack();
	return NULL;
}

int RunSigThread() {
	int tries;
	pthread_t thread;

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	(*mask)[(i-1)/64] |= 1 << ((uint32(i) - 1) & 63)
}

func sigdelset(mask *sigset, i int) {
	(*mask)[(i-1)/64] &^= 1 << ((uint32(i) - 1) & 63)
}

//go:nosplit
func sigfillset(mask *[2]uint64) {
	(*mask)[0], (*mask)[1] = ^uint64(0), ^uint64(0)

// {"Flags":0,"ParamFlags":[96,0],"ResultFlags":null}
// callsite: calls.go:103:9|0 flagstr "" flagval 0 score 2 mask 0 maskstr ""
// callsite: calls.go:112:9|1 flagstr "" flagval 0 score 2 mask 0 maskstr ""
// callsite: calls.go:115:9|2 flagstr "" flagval 0 score 2 mask 0 maskstr ""
// callsite: calls.go:119:12|3 flagstr "CallSiteOnPanicPath" flagval 2 score 102 mask 1 maskstr "panicPathAdj"
// <endcallsites>
// <endfuncpreamble>

		return *x == *y
	}

	for _, test := range tests {
		if r := test.src.InMerge(test.mask); !eq(r, test.in) {
			t.Errorf("%v merged with %#x (input): want %v, got %v", test.src, test.mask, test.in, r)
		}
		if r := test.src.OutMerge(test.mask); !eq(r, test.out) {
			t.Errorf("%v merged with %#x (output): want %v, got %v", test.src, test.mask, test.out, r)
		}
	}

var sigset_all = sigset{^uint32(0), ^uint32(0)}

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	(*mask)[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
}

func sigdelset(mask *sigset, i int) {
	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
}

//go:nosplit
func sigfillset(mask *uint64) {
	*mask = ^uint64(0)

// And atomically performs a bitwise AND operation on x using the bitmask
// provided as mask and returns the old value.
func (x *Int32) And(mask int32) (old int32) { return AndInt32(&x.v, mask) }

// Or atomically performs a bitwise OR operation on x using the bitmask
// provided as mask and returns the old value.
func (x *Int32) Or(mask int32) (old int32) { return OrInt32(&x.v, mask) }

// An Int64 is an atomic int64. The zero value is zero.

		max = l
	}

	mask := 0
	for i := range bytesA {
		xor := bytesA[i] ^ bytesB[i]
		if xor == 0 {
			bytes[i] = bytesA[i]
			mask += 8

		} else {
			pos := bits.LeadingZeros8(xor)
			mask += pos
			// mask off the non leading zeros
			bytes[i] = bytesA[i] & (^uint8(0) << (8 - pos))
			break
		}
	}
	if mask > max {
		mask = max
	}