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/* -*- 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 "LayerTreeOwnerTracker.h"
#include "mozilla/StaticPtr.h" // for StaticAutoPtr
#include "mozilla/gfx/GPUChild.h" // for GPUChild
#include "mozilla/gfx/GPUProcessManager.h" // for GPUProcessManager
#include <functional>
namespace mozilla {
namespace layers {
static StaticAutoPtr<LayerTreeOwnerTracker> sSingleton;
LayerTreeOwnerTracker::LayerTreeOwnerTracker()
: mLayerIdsLock("LayerTreeOwnerTrackerLock") {}
void LayerTreeOwnerTracker::Initialize() {
MOZ_ASSERT(!sSingleton);
sSingleton = new LayerTreeOwnerTracker();
}
void LayerTreeOwnerTracker::Shutdown() { sSingleton = nullptr; }
LayerTreeOwnerTracker* LayerTreeOwnerTracker::Get() { return sSingleton; }
void LayerTreeOwnerTracker::Map(LayersId aLayersId,
base::ProcessId aProcessId) {
MutexAutoLock lock(mLayerIdsLock);
// Add the mapping to the list
const auto i = mLayerIds.insert({aLayersId, aProcessId});
MOZ_ASSERT(i.second, "Mapping already used layers ID!");
(void)i;
}
void LayerTreeOwnerTracker::Unmap(LayersId aLayersId,
base::ProcessId aProcessId) {
MutexAutoLock lock(mLayerIdsLock);
auto i = mLayerIds.find(aLayersId);
if (i == mLayerIds.end()) {
return;
}
if (NS_WARN_IF(i->second != aProcessId)) {
MOZ_ASSERT_UNREACHABLE("Unmapping layers ID for another process!");
return;
}
mLayerIds.erase(i);
}
bool LayerTreeOwnerTracker::IsMapped(LayersId aLayersId,
base::ProcessId aProcessId) {
MutexAutoLock lock(mLayerIdsLock);
auto iter = mLayerIds.find(aLayersId);
return iter != mLayerIds.end() && iter->second == aProcessId;
}
void LayerTreeOwnerTracker::Iterate(
const std::function<void(LayersId aLayersId, base::ProcessId aProcessId)>&
aCallback) {
MutexAutoLock lock(mLayerIdsLock);
for (const auto& iter : mLayerIds) {
aCallback(iter.first, iter.second);
}
}
} // namespace layers
} // namespace mozilla
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