1 /* Copyright libuv project contributors. All rights reserved. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to 5 * deal in the Software without restriction, including without limitation the 6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 7 * sell copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22 #include "uv.h" 23 #include "internal.h" 24 #include "winapi.h" 25 26 static void uv__register_system_resume_callback(void); 27 28 void uv__init_detect_system_wakeup(void) { 29 /* Try registering system power event callback. This is the cleanest 30 * method, but it will only work on Win8 and above. 31 */ 32 uv__register_system_resume_callback(); 33 } 34 35 static ULONG CALLBACK uv__system_resume_callback(PVOID Context, 36 ULONG Type, 37 PVOID Setting) { 38 if (Type == PBT_APMRESUMESUSPEND || Type == PBT_APMRESUMEAUTOMATIC) 39 uv__wake_all_loops(); 40 41 return 0; 42 } 43 44 static void uv__register_system_resume_callback(void) { 45 _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS recipient; 46 _HPOWERNOTIFY registration_handle; 47 48 if (pPowerRegisterSuspendResumeNotification == NULL) 49 return; 50 51 recipient.Callback = uv__system_resume_callback; 52 recipient.Context = NULL; 53 (*pPowerRegisterSuspendResumeNotification)(DEVICE_NOTIFY_CALLBACK, 54 &recipient, 55 ®istration_handle); 56 } 57