// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Stress test setgid and thread creation. A thread
// can get a SIGSETXID signal early on at thread
// initialization, causing crash. See issue 53374.

package cgotest

/*
#include <sys/types.h>
#include <unistd.h>
*/
import "C"

import (
	"runtime"
	"testing"
)

func SysvShmAttach(id int, addr uintptr, flag int) ([]byte, error) {
	addr, errno := shmat(id, addr, flag)
	if errno != nil {
		return nil, errno
	}

	// Retrieve the size of the shared memory to enable slice creation
	var info SysvShmDesc

	_, err := SysvShmCtl(id, IPC_STAT, &info)
	if err != nil {
		// release the shared memory if we can't find the size

		// ignoring error from shmdt as there's nothing sensible to return here

	t.Parallel()
	for _, test := range tests {
		test := test
		t.Run(test, func(t *testing.T) {
			t.Parallel()
			var want []byte
			tmp, err := os.CreateTemp("", "")
			if err != nil {
				t.Fatalf("temp file creation failed: %v", err)
			}
			defer os.Remove(tmp.Name())
			defer tmp.Close()
			for i := 0; i < iters; i++ {
				// Note: use -c 2 to expose any nondeterminism which is the result
				// of the runtime scheduler.

// directly in the output mmap.
//
// Relocations are applied prior to emitting generator Symbol contents.
// Generator Symbols that require relocations can be written in two passes.
// The first pass, at Symbol creation time, adds only relocations.
// The second pass, at content generation time, adds the rest.
// See generateFunctab for an example.
//
// Generator functions shouldn't grow the Symbol size.

// For example, two [Named] types can be identical only if their
// [Named.Obj] methods return the same [TypeName] symbol.
// A collection of symbols is consistent if, for each logical
// package whose path is P, the creation of those symbols
// involved at most one call to [NewPackage](P, ...).
// To ensure consistency, use a single [Importer] for
// all loaded packages and their dependencies.

		es := ldr.LookupOrCreateSym(fmt.Sprintf("zext%d", idx), 0)
		if ldr.AttrOnList(es) {
			t.Errorf("expected OnList after creation")
		}
		ldr.SetAttrOnList(es, true)
		if !ldr.AttrOnList(es) {
			t.Errorf("expected !OnList after update")
		}
		if ldr.AttrDuplicateOK(es) {
			t.Errorf("expected DupOK after creation")
		}
		ldr.SetAttrDuplicateOK(es, true)
		if !ldr.AttrDuplicateOK(es) {

}

func daemonizeWindows(cmd *exec.Cmd) {
	// Set DETACHED_PROCESS creation flag so that closing
	// the console window the parent process was run in
	// does not kill the child.
	// See documentation of creation flags in the Microsoft documentation:
	// https://learn.microsoft.com/en-us/windows/win32/procthread/process-creation-flags
	cmd.SysProcAttr = &syscall.SysProcAttr{
		CreationFlags: windows.DETACHED_PROCESS,
	}

		}
	}

	ctx, _ := WithCancel(Background())
	checkChildren("after creation", ctx, 0)
	_, cancel := WithCancel(ctx)
	checkChildren("with WithCancel child ", ctx, 1)
	cancel()
	checkChildren("after canceling WithCancel child", ctx, 0)

	ctx, _ = WithCancel(Background())
	checkChildren("after creation", ctx, 0)
	_, cancel = WithTimeout(ctx, 60*time.Minute)

	// (see x/telemetry/start_windows.go) The console creation behavior when
	// a parent is a console process without console is not clearly documented
	// but empirically we observed the new console is created and attached to the
	// subprocess in the default setup.
	//
	// Ensure no new console is attached to the subprocess by setting CREATE_NO_WINDOW.
	//   https://learn.microsoft.com/en-us/windows/console/creation-of-a-console

)

const (
	ModulePath     = "golang.org/x/telemetry/config"
	configFileName = "config.json"
)

// needNoConsole is used on windows to set the windows.CREATE_NO_WINDOW
// creation flag.
var needNoConsole = func(cmd *exec.Cmd) {}

// Download fetches the requested telemetry UploadConfig using "go mod
// download". If envOverlay is provided, it is appended to the environment used