src/dawn/native/SharedBufferMemory.cpp

// Copyright 2024 The Dawn & Tint Authors
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#include "dawn/native/SharedBufferMemory.h"

#include "dawn/native/Device.h"

namespace dawn::native {

namespace {

class ErrorSharedBufferMemory : public SharedBufferMemoryBase {
  public:
    ErrorSharedBufferMemory(DeviceBase* device, const SharedBufferMemoryDescriptor* descriptor)
        : SharedBufferMemoryBase(device, descriptor, ObjectBase::kError) {}
};

}  // namespace

// static
SharedBufferMemoryBase* SharedBufferMemoryBase::MakeError(
    DeviceBase* device,
    const SharedBufferMemoryDescriptor* descriptor) {
    return new ErrorSharedBufferMemory(device, descriptor);
}

SharedBufferMemoryBase::SharedBufferMemoryBase(DeviceBase* device,
                                               const SharedBufferMemoryDescriptor* descriptor,
                                               ObjectBase::ErrorTag tag)
    : ApiObjectBase(device, tag, descriptor->label) {}

SharedBufferMemoryBase::SharedBufferMemoryBase(DeviceBase* device,
                                               const char* label,
                                               const SharedBufferMemoryProperties& properties)
    : ApiObjectBase(device, label), mProperties(properties) {}

ObjectType SharedBufferMemoryBase::GetType() const {
    return ObjectType::SharedBufferMemory;
}

void SharedBufferMemoryBase::DestroyImpl() {}

void SharedBufferMemoryBase::APIGetProperties(SharedBufferMemoryProperties* properties) const {
    return;
}

BufferBase* SharedBufferMemoryBase::APICreateBuffer(const BufferDescriptor* descriptor) {
    return nullptr;
}

bool SharedBufferMemoryBase::APIBeginAccess(BufferBase* buffer,
                                            const BeginAccessDescriptor* descriptor) {
    return false;
}

bool SharedBufferMemoryBase::APIEndAccess(BufferBase* buffer, EndAccessState* state) {
    return false;
}

bool SharedBufferMemoryBase::APIIsDeviceLost() {
    return false;
}

void APISharedBufferMemoryEndAccessStateFreeMembers(WGPUSharedBufferMemoryEndAccessState cState) {
    auto* state = reinterpret_cast<SharedBufferMemoryBase::EndAccessState*>(&cState);
    for (size_t i = 0; i < state->fenceCount; ++i) {
        state->fences[i]->APIRelease();
    }
    delete[] state->fences;
    delete[] state->signaledValues;
}

}  // namespace dawn::native