/* Copyright libuv project contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "internal.h"

#include "winapi.h"

static void uv__register_system_resume_callback(void);

void uv__init_detect_system_wakeup(void) {

  /* Try registering system power event callback. This is the cleanest

   * method, but it will only work on Win8 and above.

   */

  uv__register_system_resume_callback();

}

static ULONG CALLBACK uv__system_resume_callback(PVOID Context,

                                                 ULONG Type,

                                                 PVOID Setting) {

  if (Type == PBT_APMRESUMESUSPEND || Type == PBT_APMRESUMEAUTOMATIC)

    uv__wake_all_loops();

  return 0;

}

static void uv__register_system_resume_callback(void) {

  _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS recipient;

  _HPOWERNOTIFY registration_handle;

  if (pPowerRegisterSuspendResumeNotification == NULL)

    return;

  recipient.Callback = uv__system_resume_callback;

  recipient.Context = NULL;

  (*pPowerRegisterSuspendResumeNotification)(DEVICE_NOTIFY_CALLBACK,

                                             &recipient,

                                             &registration_handle);

}