зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
3.6 KiB
C++
118 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "VRThread.h"
|
|
#include "nsDebug.h"
|
|
#include "nsThreadManager.h"
|
|
#include "nsThread.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
namespace mozilla {
|
|
|
|
namespace gfx {
|
|
|
|
static const uint32_t kDefaultThreadLifeTime = 60; // in 60 seconds.
|
|
static const uint32_t kDelayPostTaskTime = 20000; // in 20000 ms.
|
|
|
|
VRThread::VRThread(const nsCString& aName)
|
|
: mThread(nullptr), mLifeTime(kDefaultThreadLifeTime), mStarted(false) {
|
|
mName = aName;
|
|
}
|
|
|
|
VRThread::~VRThread() { Shutdown(); }
|
|
|
|
void VRThread::Start() {
|
|
if (!mThread) {
|
|
nsresult rv = NS_NewNamedThread(mName, getter_AddRefs(mThread));
|
|
MOZ_ASSERT(mThread);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
MOZ_ASSERT(false, "Failed to create a vr thread.");
|
|
}
|
|
RefPtr<Runnable> runnable =
|
|
NewRunnableMethod<TimeStamp>("gfx::VRThread::CheckLife", this,
|
|
&VRThread::CheckLife, TimeStamp::Now());
|
|
// Post it to the main thread for tracking the lifetime.
|
|
nsCOMPtr<nsIThread> mainThread;
|
|
rv = NS_GetMainThread(getter_AddRefs(mainThread));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("VRThread::Start() could not get Main thread");
|
|
return;
|
|
}
|
|
mainThread->DelayedDispatch(runnable.forget(), kDelayPostTaskTime);
|
|
}
|
|
mStarted = true;
|
|
mLastActiveTime = TimeStamp::Now();
|
|
}
|
|
|
|
void VRThread::Shutdown() {
|
|
if (mThread) {
|
|
if (nsThreadManager::get().IsNSThread()) {
|
|
mThread->Shutdown();
|
|
} else {
|
|
NS_WARNING(
|
|
"VRThread::Shutdown() may only be called from an XPCOM thread");
|
|
NS_DispatchToMainThread(NS_NewRunnableFunction(
|
|
"VRThread::Shutdown", [thread = mThread]() { thread->Shutdown(); }));
|
|
}
|
|
mThread = nullptr;
|
|
}
|
|
mStarted = false;
|
|
}
|
|
|
|
const nsCOMPtr<nsIThread> VRThread::GetThread() const { return mThread; }
|
|
|
|
void VRThread::PostTask(already_AddRefed<Runnable> aTask) {
|
|
PostDelayedTask(std::move(aTask), 0);
|
|
}
|
|
|
|
void VRThread::PostDelayedTask(already_AddRefed<Runnable> aTask,
|
|
uint32_t aTime) {
|
|
MOZ_ASSERT(mStarted, "Must call Start() before posting tasks.");
|
|
MOZ_ASSERT(mThread);
|
|
mLastActiveTime = TimeStamp::Now();
|
|
|
|
if (!aTime) {
|
|
mThread->Dispatch(std::move(aTask), NS_DISPATCH_NORMAL);
|
|
} else {
|
|
mThread->DelayedDispatch(std::move(aTask), aTime);
|
|
}
|
|
}
|
|
|
|
void VRThread::CheckLife(TimeStamp aCheckTimestamp) {
|
|
// VR system is going to shutdown.
|
|
if (!mStarted) {
|
|
Shutdown();
|
|
return;
|
|
}
|
|
|
|
const TimeDuration timeout = TimeDuration::FromSeconds(mLifeTime);
|
|
if ((aCheckTimestamp - mLastActiveTime) > timeout) {
|
|
Shutdown();
|
|
} else {
|
|
RefPtr<Runnable> runnable =
|
|
NewRunnableMethod<TimeStamp>("gfx::VRThread::CheckLife", this,
|
|
&VRThread::CheckLife, TimeStamp::Now());
|
|
// Post it to the main thread for tracking the lifetime.
|
|
nsCOMPtr<nsIThread> mainThread;
|
|
nsresult rv = NS_GetMainThread(getter_AddRefs(mainThread));
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("VRThread::CheckLife() could not get Main thread");
|
|
return;
|
|
}
|
|
mainThread->DelayedDispatch(runnable.forget(), kDelayPostTaskTime);
|
|
}
|
|
}
|
|
|
|
void VRThread::SetLifeTime(uint32_t aLifeTime) { mLifeTime = aLifeTime; }
|
|
|
|
uint32_t VRThread::GetLifeTime() { return mLifeTime; }
|
|
|
|
bool VRThread::IsActive() { return !!mThread; }
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|