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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 "mozilla/layers/TextureSourceProvider.h"
#include "mozilla/layers/TextureHost.h"
#include "mozilla/layers/PTextureParent.h"
#ifdef XP_DARWIN
# include "mozilla/layers/TextureSync.h"
# include "nsClassHashtable.h"
#endif
namespace mozilla {
namespace layers {
TextureSourceProvider::~TextureSourceProvider() { ReadUnlockTextures(); }
void TextureSourceProvider::ReadUnlockTextures() {
#ifdef XP_DARWIN
nsClassHashtable<nsUint32HashKey, nsTArray<uint64_t>>
texturesIdsToUnlockByPid;
for (auto& texture : mUnlockAfterComposition) {
auto bufferTexture = texture->AsBufferTextureHost();
if (bufferTexture && bufferTexture->IsDirectMap()) {
texture->ReadUnlock();
auto actor = texture->GetIPDLActor();
if (actor) {
base::ProcessId pid = actor->OtherPid();
nsTArray<uint64_t>* textureIds =
texturesIdsToUnlockByPid.LookupOrAdd(pid);
textureIds->AppendElement(TextureHost::GetTextureSerial(actor));
}
} else {
texture->ReadUnlock();
}
}
for (auto it = texturesIdsToUnlockByPid.ConstIter(); !it.Done(); it.Next()) {
TextureSync::SetTexturesUnlocked(it.Key(), *it.UserData());
}
#else
for (auto& texture : mUnlockAfterComposition) {
texture->ReadUnlock();
}
#endif
mUnlockAfterComposition.Clear();
}
void TextureSourceProvider::UnlockAfterComposition(TextureHost* aTexture) {
mUnlockAfterComposition.AppendElement(aTexture);
}
bool TextureSourceProvider::NotifyNotUsedAfterComposition(
TextureHost* aTextureHost) {
mNotifyNotUsedAfterComposition.AppendElement(aTextureHost);
// If Compositor holds many TextureHosts without compositing,
// the TextureHosts should be flushed to reduce memory consumption.
const int thresholdCount = 5;
const double thresholdSec = 2.0f;
if (mNotifyNotUsedAfterComposition.Length() > thresholdCount) {
TimeStamp lastCompositionEndTime = GetLastCompositionEndTime();
TimeDuration duration = lastCompositionEndTime
? TimeStamp::Now() - lastCompositionEndTime
: TimeDuration();
// Check if we could flush
if (duration.ToSeconds() > thresholdSec) {
FlushPendingNotifyNotUsed();
}
}
return true;
}
void TextureSourceProvider::FlushPendingNotifyNotUsed() {
for (auto& textureHost : mNotifyNotUsedAfterComposition) {
textureHost->CallNotifyNotUsed();
}
mNotifyNotUsedAfterComposition.Clear();
}
void TextureSourceProvider::Destroy() {
ReadUnlockTextures();
FlushPendingNotifyNotUsed();
}
} // namespace layers
} // namespace mozilla
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