libuv-svace-build

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/* Copyright libuv project contributors. All rights reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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#include "uv.h"
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#include "internal.h"
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#include "winapi.h"
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static void uv__register_system_resume_callback(void);
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void uv__init_detect_system_wakeup(void) {
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  /* Try registering system power event callback. This is the cleanest
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   * method, but it will only work on Win8 and above.
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   */
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  uv__register_system_resume_callback();
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}
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static ULONG CALLBACK uv__system_resume_callback(PVOID Context,
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                                                 ULONG Type,
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                                                 PVOID Setting) {
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  if (Type == PBT_APMRESUMESUSPEND || Type == PBT_APMRESUMEAUTOMATIC)
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    uv__wake_all_loops();
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  return 0;
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}
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static void uv__register_system_resume_callback(void) {
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  _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS recipient;
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  _HPOWERNOTIFY registration_handle;
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  if (pPowerRegisterSuspendResumeNotification == NULL)
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    return;
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  recipient.Callback = uv__system_resume_callback;
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  recipient.Context = NULL;
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  (*pPowerRegisterSuspendResumeNotification)(DEVICE_NOTIFY_CALLBACK,
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                                             &recipient,
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                                             &registration_handle);
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}
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