mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
/* 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 <algorithm>
|
|
|
|
#include "mozilla/ClearOnShutdown.h"
|
|
#include "mozilla/StaticPtr.h"
|
|
#include "nsComponentManagerUtils.h"
|
|
#include "nsITimer.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
namespace mozilla {
|
|
namespace hal_impl {
|
|
|
|
static void
|
|
TimerCallbackFunc(nsITimer *aTimer, void *aClosure)
|
|
{
|
|
hal::NotifyAlarmFired();
|
|
}
|
|
|
|
static StaticRefPtr<nsITimer> sTimer;
|
|
|
|
bool
|
|
EnableAlarm()
|
|
{
|
|
static bool initialized = false;
|
|
if (!initialized) {
|
|
initialized = true;
|
|
ClearOnShutdown(&sTimer);
|
|
}
|
|
|
|
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1");
|
|
sTimer = timer;
|
|
MOZ_ASSERT(sTimer);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
DisableAlarm()
|
|
{
|
|
/*
|
|
* DisableAlarm() may be called after sTimer has been set to null by
|
|
* ClearOnShutdown().
|
|
*/
|
|
if (sTimer) {
|
|
sTimer->Cancel();
|
|
}
|
|
}
|
|
|
|
bool
|
|
SetAlarm(int32_t aSeconds, int32_t aNanoseconds)
|
|
{
|
|
if (!sTimer) {
|
|
MOZ_ASSERT(false, "We should have enabled the alarm");
|
|
return false;
|
|
}
|
|
|
|
// Do the math to convert aSeconds and aNanoseconds into milliseconds since
|
|
// the epoch.
|
|
int64_t milliseconds = static_cast<int64_t>(aSeconds) * 1000 +
|
|
static_cast<int64_t>(aNanoseconds) / 1000000;
|
|
|
|
// nsITimer expects relative milliseconds.
|
|
int64_t relMilliseconds = milliseconds - PR_Now() / 1000;
|
|
|
|
// If the alarm time is in the past relative to PR_Now(),
|
|
// we choose to immediately fire the alarm. Passing 0 means nsITimer will
|
|
// queue a timeout event immediately.
|
|
sTimer->InitWithFuncCallback(TimerCallbackFunc, nullptr,
|
|
clamped<int64_t>(relMilliseconds, 0, INT32_MAX),
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
return true;
|
|
}
|
|
|
|
} // namespace hal_impl
|
|
} // namespace mozilla
|