The Tor Browser / file comparison
comparison: hal/linux/LinuxPower.cpp
hal/linux/LinuxPower.cpp
- changeset 2
- 7e26c7da4463
equal
deleted
inserted
replaced
| -1:000000000000 | 0:2869b26928eb |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "Hal.h" | |
| 7 | |
| 8 #include <unistd.h> | |
| 9 #include <sys/reboot.h> | |
| 10 #include "nsIObserverService.h" | |
| 11 #include "mozilla/Services.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 namespace hal_impl { | |
| 15 | |
| 16 void | |
| 17 Reboot() | |
| 18 { | |
| 19 nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService(); | |
| 20 if (obsServ) { | |
| 21 obsServ->NotifyObservers(nullptr, "system-reboot", nullptr); | |
| 22 } | |
| 23 sync(); | |
| 24 reboot(RB_AUTOBOOT); | |
| 25 } | |
| 26 | |
| 27 void | |
| 28 PowerOff() | |
| 29 { | |
| 30 nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService(); | |
| 31 if (obsServ) { | |
| 32 obsServ->NotifyObservers(nullptr, "system-power-off", nullptr); | |
| 33 } | |
| 34 sync(); | |
| 35 reboot(RB_POWER_OFF); | |
| 36 } | |
| 37 | |
| 38 // Structure to specify how watchdog pthread is going to work. | |
| 39 typedef struct watchdogParam | |
| 40 { | |
| 41 hal::ShutdownMode mode; // Specify how to shutdown the system. | |
| 42 int32_t timeoutSecs; // Specify the delayed seconds to shutdown the system. | |
| 43 | |
| 44 watchdogParam(hal::ShutdownMode aMode, int32_t aTimeoutSecs) | |
| 45 : mode(aMode), timeoutSecs(aTimeoutSecs) {} | |
| 46 } watchdogParam_t; | |
| 47 | |
| 48 // Function to complusively shut down the system with a given mode. | |
| 49 static void | |
| 50 QuitHard(hal::ShutdownMode aMode) | |
| 51 { | |
| 52 switch (aMode) | |
| 53 { | |
| 54 case hal::eHalShutdownMode_PowerOff: | |
| 55 PowerOff(); | |
| 56 break; | |
| 57 case hal::eHalShutdownMode_Reboot: | |
| 58 Reboot(); | |
| 59 break; | |
| 60 case hal::eHalShutdownMode_Restart: | |
| 61 // Don't let signal handlers affect forced shutdown. | |
| 62 kill(0, SIGKILL); | |
| 63 // If we can't SIGKILL our process group, something is badly | |
| 64 // wrong. Trying to deliver a catch-able signal to ourselves can | |
| 65 // invoke signal handlers and might cause problems. So try | |
| 66 // _exit() and hope we go away. | |
| 67 _exit(1); | |
| 68 break; | |
| 69 default: | |
| 70 MOZ_CRASH(); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 // Function to complusively shut down the system with a given mode when timeout. | |
| 75 static void* | |
| 76 ForceQuitWatchdog(void* aParamPtr) | |
| 77 { | |
| 78 watchdogParam_t* paramPtr = reinterpret_cast<watchdogParam_t*>(aParamPtr); | |
| 79 if (paramPtr->timeoutSecs > 0 && paramPtr->timeoutSecs <= 30) { | |
| 80 // If we shut down normally before the timeout, this thread will | |
| 81 // be harmlessly reaped by the OS. | |
| 82 TimeStamp deadline = | |
| 83 (TimeStamp::Now() + TimeDuration::FromSeconds(paramPtr->timeoutSecs)); | |
| 84 while (true) { | |
| 85 TimeDuration remaining = (deadline - TimeStamp::Now()); | |
| 86 int sleepSeconds = int(remaining.ToSeconds()); | |
| 87 if (sleepSeconds <= 0) { | |
| 88 break; | |
| 89 } | |
| 90 sleep(sleepSeconds); | |
| 91 } | |
| 92 } | |
| 93 hal::ShutdownMode mode = paramPtr->mode; | |
| 94 delete paramPtr; | |
| 95 QuitHard(mode); | |
| 96 return nullptr; | |
| 97 } | |
| 98 | |
| 99 void | |
| 100 StartForceQuitWatchdog(hal::ShutdownMode aMode, int32_t aTimeoutSecs) | |
| 101 { | |
| 102 // Force-quits are intepreted a little more ferociously on Gonk, | |
| 103 // because while Gecko is in the process of shutting down, the user | |
| 104 // can't call 911, for example. And if we hang on shutdown, bad | |
| 105 // things happen. So, make sure that doesn't happen. | |
| 106 if (aTimeoutSecs <= 0) { | |
| 107 return; | |
| 108 } | |
| 109 | |
| 110 // Use a raw pthread here to insulate ourselves from bugs in other | |
| 111 // Gecko code that we're trying to protect! | |
| 112 // | |
| 113 // Note that we let the watchdog in charge of releasing |paramPtr| | |
| 114 // if the pthread is successfully created. | |
| 115 watchdogParam_t* paramPtr = new watchdogParam_t(aMode, aTimeoutSecs); | |
| 116 pthread_t watchdog; | |
| 117 if (pthread_create(&watchdog, nullptr, | |
| 118 ForceQuitWatchdog, | |
| 119 reinterpret_cast<void*>(paramPtr))) { | |
| 120 // Better safe than sorry. | |
| 121 delete paramPtr; | |
| 122 QuitHard(aMode); | |
| 123 } | |
| 124 // The watchdog thread is off and running now. | |
| 125 } | |
| 126 | |
| 127 } // hal_impl | |
| 128 } // mozilla |
