1 files changed, 167 insertions, 0 deletions
diff --git a/hal/linux/LinuxPower.cpp b/hal/linux/LinuxPower.cpp
new file mode 100644
index 000000000..70ab4a3f6
--- /dev/null
+++ b/hal/linux/LinuxPower.cpp
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "Hal.h"
+#include "HalLog.h"
+
+#include <unistd.h>
+#include <sys/reboot.h>
+#include "nsIObserverService.h"
+#include "mozilla/Services.h"
+#include "MainThreadUtils.h"
+
+#if defined(MOZ_WIDGET_GONK)
+#include "cutils/android_reboot.h"
+#include "cutils/properties.h"
+#endif
+
+namespace mozilla {
+namespace hal_impl {
+
+#if (defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 19)
+static void
+PowerCtl(const char* aValue, int aCmd)
+{
+  // this invokes init's powerctl builtin via /init.rc
+  property_set("sys.powerctl", aValue);
+  // device should reboot in few moments, but if it doesn't - call
+  // android_reboot() to make sure that init isn't stuck somewhere
+  sleep(10);
+  HAL_LOG("Powerctl call takes too long, forcing %s.", aValue);
+  android_reboot(aCmd, 0, nullptr);
+}
+#endif
+
+void
+Reboot()
+{
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
+    if (obsServ) {
+      obsServ->NotifyObservers(nullptr, "system-reboot", nullptr);
+    }
+  }
+
+#if !defined(MOZ_WIDGET_GONK)
+  sync();
+  reboot(RB_AUTOBOOT);
+#elif (ANDROID_VERSION < 19)
+  android_reboot(ANDROID_RB_RESTART, 0, nullptr);
+#else
+  PowerCtl("reboot", ANDROID_RB_RESTART);
+#endif
+}
+
+void
+PowerOff()
+{
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
+    if (obsServ) {
+      obsServ->NotifyObservers(nullptr, "system-power-off", nullptr);
+    }
+  }
+
+#if !defined(MOZ_WIDGET_GONK)
+  sync();
+  reboot(RB_POWER_OFF);
+#elif (ANDROID_VERSION < 19)
+  android_reboot(ANDROID_RB_POWEROFF, 0, nullptr);
+#else
+  PowerCtl("shutdown", ANDROID_RB_POWEROFF);
+#endif
+}
+
+// Structure to specify how watchdog pthread is going to work.
+typedef struct watchdogParam
+{
+  hal::ShutdownMode mode; // Specify how to shutdown the system.
+  int32_t timeoutSecs;    // Specify the delayed seconds to shutdown the system.
+
+  watchdogParam(hal::ShutdownMode aMode, int32_t aTimeoutSecs)
+    : mode(aMode), timeoutSecs(aTimeoutSecs) {}
+} watchdogParam_t;
+
+// Function to complusively shut down the system with a given mode.
+static void
+QuitHard(hal::ShutdownMode aMode)
+{
+  switch (aMode)
+  {
+    case hal::eHalShutdownMode_PowerOff:
+      PowerOff();
+      break;
+    case hal::eHalShutdownMode_Reboot:
+      Reboot();
+      break;
+    case hal::eHalShutdownMode_Restart:
+      // Don't let signal handlers affect forced shutdown.
+      kill(0, SIGKILL);
+      // If we can't SIGKILL our process group, something is badly
+      // wrong.  Trying to deliver a catch-able signal to ourselves can
+      // invoke signal handlers and might cause problems.  So try
+      // _exit() and hope we go away.
+      _exit(1);
+      break;
+    default:
+      MOZ_CRASH();
+  }
+}
+
+// Function to complusively shut down the system with a given mode when timeout.
+static void*
+ForceQuitWatchdog(void* aParamPtr)
+{
+  watchdogParam_t* paramPtr = reinterpret_cast<watchdogParam_t*>(aParamPtr);
+  if (paramPtr->timeoutSecs > 0 && paramPtr->timeoutSecs <= 30) {
+    // If we shut down normally before the timeout, this thread will
+    // be harmlessly reaped by the OS.
+    TimeStamp deadline =
+      (TimeStamp::Now() + TimeDuration::FromSeconds(paramPtr->timeoutSecs));
+    while (true) {
+      TimeDuration remaining = (deadline - TimeStamp::Now());
+      int sleepSeconds = int(remaining.ToSeconds());
+      if (sleepSeconds <= 0) {
+        break;
+      }
+      sleep(sleepSeconds);
+    }
+  }
+  hal::ShutdownMode mode = paramPtr->mode;
+  delete paramPtr;
+  QuitHard(mode);
+  return nullptr;
+}
+
+void
+StartForceQuitWatchdog(hal::ShutdownMode aMode, int32_t aTimeoutSecs)
+{
+  // Force-quits are intepreted a little more ferociously on Gonk,
+  // because while Gecko is in the process of shutting down, the user
+  // can't call 911, for example.  And if we hang on shutdown, bad
+  // things happen.  So, make sure that doesn't happen.
+  if (aTimeoutSecs <= 0) {
+    return;
+  }
+
+  // Use a raw pthread here to insulate ourselves from bugs in other
+  // Gecko code that we're trying to protect!
+  // 
+  // Note that we let the watchdog in charge of releasing |paramPtr|
+  // if the pthread is successfully created.
+  watchdogParam_t* paramPtr = new watchdogParam_t(aMode, aTimeoutSecs);
+  pthread_t watchdog;
+  if (pthread_create(&watchdog, nullptr,
+                     ForceQuitWatchdog,
+                     reinterpret_cast<void*>(paramPtr))) {
+    // Better safe than sorry.
+    delete paramPtr;
+    QuitHard(aMode);
+  }
+  // The watchdog thread is off and running now.
+}
+
+} // hal_impl
+} // mozilla