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/*
* Copyright (C) 2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(GPU_PROCESS)
#include "RemoteSharedResourceCache.h"
#include "GPUConnectionToWebProcess.h"
#include <wtf/TZoneMallocInlines.h>
#if HAVE(IOSURFACE)
#include <WebCore/IOSurfacePool.h>
#endif
namespace WebKit {
using namespace WebCore;
constexpr Seconds defaultRemoteSharedResourceCacheTimeout = 15_s;
// Per GPU process limit of accelerated image buffers. These consume limited global OS resources.
constexpr size_t globalAcceleratedImageBufferLimit = 10000;
// Per GPU process limit of image buffers for canvas. These consume limited process-wide resources.
constexpr size_t globalImageBufferForCanvasLimit = 200000;
// Per Web Content process limit of accelerated image buffers for canvas. Prevents GPU resource exhaustion affecting other Web Content processes.
constexpr size_t acceleratedImageBufferForCanvasLimit = 5000;
// Per Web Content process limit of image buffers for canvas. Prevents IPC-related resource exhaustion affecting other Web Content processes.
constexpr size_t imageBufferForCanvasLimit = 50000;
static std::atomic<size_t> globalAcceleratedImageBufferCount = 0;
static std::atomic<size_t> globalImageBufferForCanvasCount = 0;
WTF_MAKE_TZONE_ALLOCATED_IMPL(RemoteSharedResourceCache);
Ref<RemoteSharedResourceCache> RemoteSharedResourceCache::create(GPUConnectionToWebProcess& gpuConnectionToWebProcess)
{
return adoptRef(*new RemoteSharedResourceCache(gpuConnectionToWebProcess));
}
RemoteSharedResourceCache::RemoteSharedResourceCache(GPUConnectionToWebProcess& gpuConnectionToWebProcess)
: m_resourceOwner(gpuConnectionToWebProcess.webProcessIdentity())
#if HAVE(IOSURFACE)
, m_ioSurfacePool(IOSurfacePool::create())
#endif
{
}
RemoteSharedResourceCache::~RemoteSharedResourceCache() = default;
void RemoteSharedResourceCache::addSerializedImageBuffer(RenderingResourceIdentifier identifier, Ref<ImageBuffer> imageBuffer)
{
m_serializedImageBuffers.add({ identifier, 0 }, WTFMove(imageBuffer));
}
RefPtr<ImageBuffer> RemoteSharedResourceCache::takeSerializedImageBuffer(RenderingResourceIdentifier identifier)
{
return m_serializedImageBuffers.take({ { identifier, 0 }, 0 }, defaultRemoteSharedResourceCacheTimeout);
}
void RemoteSharedResourceCache::releaseSerializedImageBuffer(WebCore::RenderingResourceIdentifier identifier)
{
m_serializedImageBuffers.remove({ { identifier, 0 }, 0 });
}
void RemoteSharedResourceCache::lowMemoryHandler()
{
#if HAVE(IOSURFACE)
Ref { m_ioSurfacePool }->discardAllSurfaces();
#endif
}
void RemoteSharedResourceCache::didCreateImageBuffer(RenderingPurpose purpose, RenderingMode renderingMode)
{
if (purpose == RenderingPurpose::Canvas) {
if (renderingMode == RenderingMode::Accelerated)
++m_acceleratedImageBufferForCanvasCount;
++globalImageBufferForCanvasCount;
++m_imageBufferForCanvasCount;
}
if (renderingMode == RenderingMode::Accelerated)
++globalAcceleratedImageBufferCount;
}
void RemoteSharedResourceCache::didReleaseImageBuffer(RenderingPurpose purpose, RenderingMode renderingMode)
{
if (purpose == RenderingPurpose::Canvas) {
if (renderingMode == RenderingMode::Accelerated)
--m_acceleratedImageBufferForCanvasCount;
--globalImageBufferForCanvasCount;
--m_imageBufferForCanvasCount;
}
if (renderingMode == RenderingMode::Accelerated)
--globalAcceleratedImageBufferCount;
}
bool RemoteSharedResourceCache::reachedAcceleratedImageBufferLimit(RenderingPurpose purpose) const
{
return (purpose == RenderingPurpose::Canvas && m_acceleratedImageBufferForCanvasCount >= acceleratedImageBufferForCanvasLimit) || globalAcceleratedImageBufferCount >= globalAcceleratedImageBufferLimit;
}
bool RemoteSharedResourceCache::reachedImageBufferForCanvasLimit() const
{
return m_imageBufferForCanvasCount >= imageBufferForCanvasLimit || globalImageBufferForCanvasCount >= globalImageBufferForCanvasLimit;
}
ImageBufferResourceLimits RemoteSharedResourceCache::getResourceLimitsForTesting() const
{
return {
.acceleratedImageBufferForCanvasCount = m_acceleratedImageBufferForCanvasCount,
.acceleratedImageBufferForCanvasLimit = acceleratedImageBufferForCanvasLimit,
.globalAcceleratedImageBufferCount = globalAcceleratedImageBufferCount,
.globalAcceleratedImageBufferLimit = globalAcceleratedImageBufferLimit,
.globalImageBufferForCanvasCount = globalImageBufferForCanvasCount,
.globalImageBufferForCanvasLimit = globalImageBufferForCanvasLimit,
.imageBufferForCanvasCount = m_imageBufferForCanvasCount,
.imageBufferForCanvasLimit = imageBufferForCanvasLimit,
};
}
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS)
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