package cmd

import (
	"context"
	"os"
	"os/exec"
	"runtime"
	"syscall"

	xioutil "github.com/minio/minio/internal/ioutil"
)

// Type of service signals currently supported.
type serviceSignal int

const (
	serviceRestart       serviceSignal = iota // Restarts the server.
	serviceStop                               // Stops the server.

	"internal/goarch"
	"internal/stringslite"
	"unsafe"
)

// May run during STW, so write barriers are not allowed.
//
//go:nowritebarrierrec
func sighandler(_ureg *ureg, note *byte, gp *g) int {
	gsignal := getg()
	mp := gsignal.m

	var t sigTabT
	var docrash bool
	var sig int
	var flags int
	var level int32

	c := &sigctxt{_ureg}
	notestr := gostringnocopy(note)

  // TODO: Test blocking to re-enter monitor after being signaled.
  // TODO: Test interrupts with both interruptible and uninterruptible monitor.
  // TODO: Test multiple waiters: If guard is still satisfied, signal next waiter.
  // TODO: Test multiple waiters: If guard is no longer satisfied, do not signal next waiter.

}

// Closed returns a chan that will be signaled when the Instance has stopped processing tasks.
func (q Queue) Closed() <-chan struct{} {
	return q.closed
}

// processNextItem is the main workFn loop for the queue
func (q Queue) processNextItem() bool {
	// Wait until there is a new item in the working queue
	key, quit := q.queue.Get()
	if quit {
		// We are done, signal to exit the queue
		return false
	}

	/*  40 */ {_SigNotify, "signal 40"},
	/*  41 */ {_SigNotify, "signal 41"},
	/*  42 */ {_SigNotify, "signal 42"},
	/*  43 */ {_SigNotify, "signal 43"},
	/*  44 */ {_SigNotify, "signal 44"},
	/*  45 */ {_SigNotify, "signal 45"},
	/*  46 */ {_SigNotify, "signal 46"},
	/*  47 */ {_SigNotify, "signal 47"},
	/*  48 */ {_SigNotify, "signal 48"},
	/*  49 */ {_SigNotify, "signal 49"},
	/*  50 */ {_SigNotify, "signal 50"},

	_, err = readFromConn(ctx, conn, b)
	fmt.Println(err)

	// Output:
	// context deadline exceeded
}

// This example uses AfterFunc to define a function which combines
// the cancellation signals of two Contexts.
func ExampleAfterFunc_merge() {
	// mergeCancel returns a context that contains the values of ctx,
	// and which is canceled when either ctx or cancelCtx is canceled.

	/* 40 */ {_SigNotify, "signal 40"},
	/* 41 */ {_SigNotify, "signal 41"},
	/* 42 */ {_SigNotify, "signal 42"},
	/* 43 */ {_SigNotify, "signal 43"},
	/* 44 */ {_SigNotify, "signal 44"},
	/* 45 */ {_SigNotify, "signal 45"},
	/* 46 */ {_SigNotify, "signal 46"},
	/* 47 */ {_SigNotify, "signal 47"},
	/* 48 */ {_SigNotify, "signal 48"},
	/* 49 */ {_SigNotify, "signal 49"},
	/* 50 */ {_SigNotify, "signal 50"},

	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

	// We don't know which thread the fatal signal will land on, but we can still check for basics:
	//
	// 1. A frame in the signal handler: runtime.sigtramp
	// 2. GDB detection of the signal handler: <signal handler called>
	// 3. A frame before the signal handler: this could be foo, or somewhere in the scheduler

	re := regexp.MustCompile(`#.* runtime\.sigtramp `)

// misuse of unbuffered signal as argument to signal.Notify.
//
// # Analyzer sigchanyzer
//
// sigchanyzer: check for unbuffered channel of os.Signal
//
// This checker reports call expression of the form
//
//	signal.Notify(c <-chan os.Signal, sig ...os.Signal),
//
// where c is an unbuffered channel, which can be at risk of missing the signal.

		return 2;
	}
	// gccgo does not set SA_ONSTACK for SIGSEGV.
	if (getenv("GCCGO") == NULL && (osa.sa_flags&SA_ONSTACK) == 0) {
		fprintf(stderr, "Go runtime did not install signal handler\n");
		return 2;
	}
	oldHandler = osa.sa_sigaction;

	return 0;
}

int check_handler() {
	if (sigaction(SIGSEGV, NULL, &sa) < 0) {
		perror("sigaction check");
		return 2;
	}
	if (sa.sa_sigaction != handler) {