// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef LIB_ZX_TASK_H_
#define LIB_ZX_TASK_H_

#include <lib/zx/channel.h>
#include <lib/zx/handle.h>
#include <lib/zx/object.h>
#include <lib/zx/suspend_token.h>
#include <zircon/availability.h>

namespace zx {

class port;
class suspend_token;

template <typename T = void>
class task : public object<T> {
 public:
  constexpr task() = default;

  explicit task(zx_handle_t value) : object<T>(value) {}

  explicit task(handle&& h) : object<T>(h.release()) {}

  task(task&& other) : object<T>(other.release()) {}

  zx_status_t kill() const ZX_AVAILABLE_SINCE(7) {
    static_assert(object_traits<T>::supports_kill, "Object must support being killed.");
    return zx_task_kill(object<T>::get());
  }

  zx_status_t suspend(suspend_token* result) const ZX_AVAILABLE_SINCE(7) {
    // Assume |result| must refer to a different container than |this|, due
    // to strict aliasing.
    return zx_task_suspend_token(object<T>::get(), result->reset_and_get_address());
  }

  zx_status_t create_exception_channel(uint32_t options, object<channel>* channel) const
      ZX_AVAILABLE_SINCE(7) {
    return zx_task_create_exception_channel(object<T>::get(), options,
                                            channel->reset_and_get_address());
  }
} ZX_AVAILABLE_SINCE(7);

}  // namespace zx

#endif  // LIB_ZX_TASK_H_