tildefriends/deps/libuv/src/win/detect-wakeup.c

57 lines
2.2 KiB
C

/* 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);
}