//go:cgo_import_dynamic unlockpt unlockpt ""
//go:cgo_import_dynamic usleep usleep ""
//go:cgo_import_dynamic vm_region_64 vm_region_64 ""
//go:cgo_import_dynamic vm_region_recurse_64 vm_region_recurse_64 ""
//go:cgo_import_dynamic waitpid waitpid ""
//go:cgo_import_dynamic write write ""
//go:cgo_import_dynamic memcpy memcpy ""
//go:cgo_import_dynamic memmove memmove ""

//go:cgo_import_dynamic unlockpt unlockpt ""
//go:cgo_import_dynamic usleep usleep ""
//go:cgo_import_dynamic vm_region_64 vm_region_64 ""
//go:cgo_import_dynamic vm_region_recurse_64 vm_region_recurse_64 ""
//go:cgo_import_dynamic waitpid waitpid ""
//go:cgo_import_dynamic write write ""
//go:cgo_import_dynamic memcpy memcpy ""
//go:cgo_import_dynamic memmove memmove ""

#ifndef VERSION
#define VERSION HEAD
#endif

static void sigdown(int signo) {
  psignal(signo, "Shutting down, got signal");
  exit(0);
}

static void sigreap(int signo) {
  while (waitpid(-1, NULL, WNOHANG) > 0)
    ;
}

int main(int argc, char **argv) {
  int i;
  for (i = 1; i < argc; ++i) {
    if (!strcasecmp(argv[i], "-v")) {
      printf("pause.c %s\n", VERSION_STRING(VERSION));

	return Signal(w>>shift) & 0xFF
}

func (w WaitStatus) TrapCause() int { return -1 }

//sys	waitid(idType int, id int, info *Siginfo, options int) (err error)

func Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error) {
	return waitid(idType, id, info, options)
}

//sys	waitpid(pid int, wstatus *_C_int, options int) (wpid int, err error)

	runtime.ExitSyscall()
	if int64(r0) == -1 {
		err = errnoErr2(e1, e2)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func waitpid(pid int, wstatus *_C_int, options int) (wpid int, err error) {
	runtime.EnterSyscall()
	r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_WAITPID<<4, uintptr(pid), uintptr(unsafe.Pointer(wstatus)), uintptr(options))
	runtime.ExitSyscall()
	wpid = int(r0)

		if e != syscall.EINTR {
			break
		}
	}
	runtime.KeepAlive(p)
	if e != 0 {
		// waitid has been available since Linux 2.6.9, but
		// reportedly is not available in Ubuntu on Windows.
		// See issue 16610.
		if e == syscall.ENOSYS {
			return false, nil
		}
		return false, NewSyscallError("waitid", e)
	}
	return true, nil

// syscall with idtype of P_PIDFD.
//
// Reasons for non-working pidfd syscalls include an older kernel and an
// execution environment in which the above system calls are restricted by
// seccomp or a similar technology.
func checkPidfd() error {
	// Get a pidfd of the current process (opening of "/proc/self" won't
	// work for waitid).
	fd, err := unix.PidFDOpen(syscall.Getpid(), 0)

// waitid/wait6.

//go:build aix || darwin || (js && wasm) || openbsd || solaris || wasip1

package os

// blockUntilWaitable attempts to block until a call to p.Wait will
// succeed immediately, and reports whether it has done so.
// It does not actually call p.Wait.
// This version is used on systems that do not implement waitid,

// license that can be found in the LICENSE file.

package unix

import (
	"syscall"
)

const is64bit = ^uint(0) >> 63 // 0 for 32-bit hosts, 1 for 64-bit ones.

// SiginfoChild is a struct filled in by Linux waitid syscall.
// In C, siginfo_t contains a union with multiple members;
// this struct corresponds to one used when Signo is SIGCHLD.
//
// NOTE fields are exported to be used by TestSiginfoChildLayout.
type SiginfoChild struct {

	}
	return nil
}

func init() {
	waitCmd.PersistentFlags().IntVar(&timeoutSeconds, "timeoutSeconds", 60, "maximum number of seconds to wait for Envoy to be ready")
	waitCmd.PersistentFlags().IntVar(&requestTimeoutMillis, "requestTimeoutMillis", 500, "number of milliseconds to wait for response")