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/*
* Copyright (C) 2021-2023 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"
#include "RemoteBufferProxy.h"
#if ENABLE(GPU_PROCESS)
#include "RemoteBufferMessages.h"
#include "WebGPUConvertToBackingContext.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebKit::WebGPU {
WTF_MAKE_TZONE_ALLOCATED_IMPL(RemoteBufferProxy);
RemoteBufferProxy::RemoteBufferProxy(RemoteDeviceProxy& parent, ConvertToBackingContext& convertToBackingContext, WebGPUIdentifier identifier, bool mappedAtCreation)
: m_backing(identifier)
, m_convertToBackingContext(convertToBackingContext)
, m_parent(parent)
, m_mapModeFlags(mappedAtCreation ? WebCore::WebGPU::MapModeFlags(WebCore::WebGPU::MapMode::Write) : WebCore::WebGPU::MapModeFlags())
{
}
RemoteBufferProxy::~RemoteBufferProxy()
{
auto sendResult = send(Messages::RemoteBuffer::Destruct());
UNUSED_VARIABLE(sendResult);
}
void RemoteBufferProxy::mapAsync(WebCore::WebGPU::MapModeFlags mapModeFlags, WebCore::WebGPU::Size64 offset, std::optional<WebCore::WebGPU::Size64> size, CompletionHandler<void(bool)>&& callback)
{
auto sendResult = sendWithAsyncReply(Messages::RemoteBuffer::MapAsync(mapModeFlags, offset, size), [callback = WTFMove(callback), mapModeFlags, protectedThis = Ref { *this }](auto success) mutable {
if (!success)
return callback(false);
protectedThis->m_mapModeFlags = mapModeFlags;
callback(true);
});
UNUSED_PARAM(sendResult);
}
static bool offsetOrSizeExceedsBounds(size_t dataSize, WebCore::WebGPU::Size64 offset, std::optional<WebCore::WebGPU::Size64> requestedSize)
{
return offset >= dataSize || (requestedSize.has_value() && requestedSize.value() + offset > dataSize);
}
void RemoteBufferProxy::getMappedRange(WebCore::WebGPU::Size64 offset, std::optional<WebCore::WebGPU::Size64> size, NOESCAPE const Function<void(std::span<uint8_t>)>& callback)
{
// FIXME: Implement error handling.
auto sendResult = sendSync(Messages::RemoteBuffer::GetMappedRange(offset, size));
auto [data] = sendResult.takeReplyOr(std::nullopt);
if (!data || !data->span().data() || offsetOrSizeExceedsBounds(data->size(), offset, size)) {
callback({ });
return;
}
callback(data->mutableSpan().subspan(offset));
}
std::span<uint8_t> RemoteBufferProxy::getBufferContents()
{
RELEASE_ASSERT_NOT_REACHED();
}
void RemoteBufferProxy::copyFrom(std::span<const uint8_t> span, size_t offset)
{
if (!m_mapModeFlags.contains(WebCore::WebGPU::MapMode::Write))
return;
size_t actualCopySize = span.size() - offset;
if (actualCopySize > maxCrossProcessResourceCopySize) {
auto sharedMemory = WebCore::SharedMemory::copySpan(span);
std::optional<WebCore::SharedMemoryHandle> handle;
if (sharedMemory)
handle = sharedMemory->createHandle(WebCore::SharedMemory::Protection::ReadOnly);
auto sendResult = sendWithAsyncReply(Messages::RemoteBuffer::Copy(WTFMove(handle), offset), [sharedMemory = sharedMemory.copyRef(), handleHasValue = handle.has_value()](auto) mutable {
RELEASE_ASSERT(sharedMemory.get() || !handleHasValue);
});
UNUSED_VARIABLE(sendResult);
} else {
auto sendResult = send(Messages::RemoteBuffer::CopyWithCopy(span, offset));
UNUSED_VARIABLE(sendResult);
}
}
void RemoteBufferProxy::unmap()
{
auto sendResult = send(Messages::RemoteBuffer::Unmap());
UNUSED_VARIABLE(sendResult);
m_mapModeFlags = { };
}
void RemoteBufferProxy::destroy()
{
auto sendResult = send(Messages::RemoteBuffer::Destroy());
UNUSED_VARIABLE(sendResult);
}
void RemoteBufferProxy::setLabelInternal(const String& label)
{
auto sendResult = send(Messages::RemoteBuffer::SetLabel(label));
UNUSED_VARIABLE(sendResult);
}
} // namespace WebKit::WebGPU
#endif // ENABLE(GPU_PROCESS)
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