//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris

package net

import (
	"bytes"
	"syscall"
	"testing"
	"time"
)

// Test that a client can't trigger an endless loop of write system
// calls on the server by shutting down the write side on the client.
// Possibility raised in the discussion of https://golang.org/cl/71973.
func TestEndlessWrite(t *testing.T) {
	t.Parallel()

	// When not surging, we delete just enough pods to stay under the maxUnavailable limit, if any
	// are necessary, and let the core loop create new instances on those nodes.
	//
	// Assumptions:
	// * Expect manage loop to allow no more than one pod per node
	// * Expect manage loop will create new pods
	// * Expect manage loop will handle failed pods
	// * Deleted pods do not count as unavailable so that updates make progress when nodes are down

}

TEST_F(LegalizationOpConfigTest, ExpectsTrueForTF2XLATypeID) {
  EXPECT_TRUE(HasTf2XlaFallback(TypeID::get<TF::AllOp>()));
  EXPECT_TRUE(IsOpAllowedTf2xlaPreferred(TypeID::get<TF::AllOp>()));
  EXPECT_FALSE(IsTypeLegalizedWithMlir(TypeID::get<TF::AllOp>()));
}

TEST_F(LegalizationOpConfigTest, ChecksDynamicPadderOps) {
  EXPECT_TRUE(

		// see issue 59334.
		return nil
	}
	return unsafe.Slice((*uintptr)(unsafe.Pointer(&x[0])), n)
}

func xorLoop[T byte | uintptr](dst, x, y []T) {
	x = x[:len(dst)] // remove bounds check in loop
	y = y[:len(dst)] // remove bounds check in loop
	for i := range dst {
		dst[i] = x[i] ^ y[i]
	}

type pluginManager struct {
	// desiredStateOfWorldPopulator (the plugin watcher) runs an asynchronous
	// periodic loop to populate the desiredStateOfWorld.
	desiredStateOfWorldPopulator *pluginwatcher.Watcher

	// reconciler runs an asynchronous periodic loop to reconcile the
	// desiredStateOfWorld with the actualStateOfWorld by triggering register
	// and unregister operations using the operationExecutor.

	MOVD $0, R4  // c = 0
	MOVD $0, R0  // make sure it's zero
	MOVD $0, R10 // i = 0

	// s/JL/JMP/ below to disable the unrolled loop
	SUB $4, R3
	BLT v1
	SUB $12, R3 // n -= 16
	BLT A1      // if n < 0 goto A1

	MOVD R8, R5
	MOVD R9, R6
	MOVD R2, R7

	// n >= 0
	// regular loop body unrolled 16x
	VZERO V0 // c = 0

UU1:
	VLM  0(R5), V1, V4    // 64-bytes into V1..V8
	ADD  $64, R5

matches TensorFlow semantics.

## Example

Below is an example of a loop decrementing an initial `%_count.init` integer
until it reaches 0 and returns the last value in the loop.

```mlir {.mlir}
// Loop `%count.init` times and return the last counter (always zero)
%fetches = tf_executor.graph {

  %loop.init, %ctl0 = tf_executor.Enter %count.init : i32

              "{#true,&,*iv0/cond:0}<loop>");
    EXPECT_EQ(predicate_map[ControlOutputFor(dependent_iv0)],
              "{#true,&,(iv0/iv:0 & *iv0/cond:0)}<loop>");
    EXPECT_EQ(predicate_map[ControlOutputFor(dependent_iv1)],
              "{#true,&,(iv0/iv:0 & *iv0/cond:0)}<loop>");
    EXPECT_EQ(predicate_map[ControlOutputFor(add0)],
              "{#true,&,(iv0/iv:0 & *iv0/cond:0)}<loop>");
  }
}

  // detection graph, disconnecting each loop from the enclosing graph.
  // Specifically, we:
  // * add a new "frame" node for each loop.
  // * replace edges to "Enter" nodes, and edges from "Exit" nodes with edges
  //   to/from the corresponding frame node. In essence, we collapse the loop
  //   into a single node for the purpose of cycle detection in the enclosing
  //   graph.

      /*parallel_iterations=*/10, false,
      /*shape_invariant=*/false);

  // `_lower_using_switch_merge` is the default for While ops created
  // in TensorFlow and allows lowering to V1 control flow for loop
  // parallelization.
  dataset_while->setAttr("_lower_using_switch_merge",
                         builder.getBoolAttr(true));

  return dataset_while;
}