package socktest

import (
	"fmt"
	"sync"
)

// A Switch represents a callpath point switch for socket system
// calls.
type Switch struct {
	once sync.Once

	fmu   sync.RWMutex
	fltab map[FilterType]Filter

	smu   sync.RWMutex
	sotab Sockets
	stats stats
}

func (sw *Switch) init() {
	sw.fltab = make(map[FilterType]Filter)
	sw.sotab = make(Sockets)

	if !go122InterfaceSwitchCache {
		return false
	}
	// We need an atomic load instruction to make the cache multithreaded-safe.
	// (AtomicLoadPtr needs to be implemented in cmd/compile/internal/ssa/_gen/ARCH.rules.)
	switch goarch {
	case "amd64", "arm64", "loong64", "mips", "mipsle", "mips64", "mips64le", "ppc64", "ppc64le", "riscv64", "s390x":
		return true
	default:
		return false
	}
}

type TypeAssert struct {

# CHECK: tf_executor._SwitchN
# CHECK-SAME: of 3 : tensor<*xi32>
# CHECK-SAME: T = i32
# CHECK-SAME: loc(fused["_SwitchN:", "Case/branch_index/_3"])
# CHECK: tf_executor._SwitchN
# CHECK-SAME: of 2 : tensor<*xf32>
# CHECK-SAME: T = f32
# CHECK-SAME: loc(fused["_SwitchN:", "Case/Case/input_0/_7"])

node {
  name: "Case/branch_index"
  op: "Const"
  attr {

    }
  }
}
node {
  name: "cond/Switch"
  op: "Switch"
  input: "Placeholder_1"
  input: "Placeholder_1"
  attr {
    key: "T"
    value {
      type: DT_BOOL
    }
  }
}
node {
  name: "cond/switch_t"
  op: "Identity"
  input: "cond/Switch:1"
  attr {
    key: "T"
    value {
      type: DT_BOOL
    }
  }
}
node {
  name: "cond/switch_f"
  op: "Identity"
  input: "cond/Switch"

type switch header or in the case.

See also issue 4470.
*/
package p

func f() {
	var x interface{}
	switch x.(type) { // should remain the same
	}
	switch (x.(type)) { // should become: switch x.(type) {
	}

	switch x.(type) { // should remain the same
	case int:
	}
	switch (x.(type)) { // should become: switch x.(type) {
	case int:
	}

	switch x.(type) { // should remain the same
	case []int:

      type: DT_BOOL
    }
  }
}
node {
  name: "Switch0"
  op: "Switch"
  input: "input"
  input: "input"
  attr {
    key: "T"
    value {
      type: DT_BOOL
    }
  }
}
node {
  name: "func0"
  op: "func_name"
  input: "Switch0:1"
}
node {
  name: "Merge"
  op: "Merge"
  input: "Switch0:1"
  input: "Switch0"
  input: "^func0"
  attr {
    key: "N"
    value {

	mcall(coroswitch_m)
}

//go:linkname coroswitch

// coroswitch switches to the goroutine blocked on c
// and then blocks the current goroutine on c.
func coroswitch(c *coro) {
	gp := getg()
	gp.coroarg = c
	mcall(coroswitch_m)
}

// coroswitch_m is the implementation of coroswitch
// that runs on the m stack.
//
// Note: Coroutine switches are expected to happen at
// an order of magnitude (or more) higher frequency

func (e *TooNewError) Is(err error) bool {
	return err == ErrTooNew
}

// A Switcher provides the ability to switch to a new toolchain in response to TooNewErrors.
// See [cmd/go/internal/toolchain.Switcher] for documentation.
type Switcher interface {
	Error(err error)
	Switch(ctx context.Context)

			return fmt.Errorf("failed to open current netns: %v", err)
		}
		defer threadNS.Close()

		// switch to target namespace
		if err = NetnsSet(fdable); err != nil {
			return err
		}
		defer func() {
			err := threadNS.Set() // switch back
			if err == nil {
				// Unlock the current thread only when we successfully switched back
				// to the original namespace; otherwise leave the thread locked which

		rng = rng.next(predictable)
		switch a[rng.value()&7].(type) {
		case SI0:
			n += 1
		case SI1:
			n += 2
		case SI2:
			n += 3
		case SI3:
			n += 4
		case SI4:
			n += 5
		case SI5:
			n += 6
		case SI6:
			n += 7
		case SI7:
			n += 8
		}
	}
	sink = n
}

// A simple random number generator used to make switches conditionally predictable.
type rng uint64