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// Copyright 2024 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "common/DeviceRT.h"
#include "rkcommon/utility/CodeTimer.h"
#include <condition_variable>
#include <mutex>
#include <queue>
#include <thread>
namespace ospray {
namespace devicert {
/////////////////////////////////////////////////////////////////////
// AsyncEvent interface
struct OSPRAY_SDK_INTERFACE AsyncEventImpl : public AsyncEventIfc
{
// Signalling job state
void jobScheduled();
void jobStarted();
void jobFinished();
// Wait for the event
void wait() const override;
// Return true if finished
bool finished() const override;
// Get event duration
float getDuration() const override;
// Get SYCL event pointer
void *getSyclEventPtr() override;
private:
// Event state
bool ready{true};
// Measure job time
rkcommon::utility::CodeTimer timer;
// Synchronization to wait on event
mutable std::mutex mtx;
mutable std::condition_variable cv;
};
/////////////////////////////////////////////////////////////////////
// Device interface
struct OSPRAY_SDK_INTERFACE DeviceImpl : public Device
{
// Construction & destruction
DeviceImpl(bool debug);
DeviceImpl(uint32_t deviceId, bool debug);
DeviceImpl(void *devicePtr, void *contextPtr, bool debug);
~DeviceImpl() override;
// Allocate device memory
void *deviceMalloc(std::size_t size) override;
// Allocate shared memory
void *sharedMalloc(std::size_t size) override;
// Allocate host memory
void *hostMalloc(std::size_t size) override;
// Release shared or device memory
void free(void *ptr) override;
// Get pointer allocation type
Alloc getPointerType(void *ptr) const override;
// Wait for device to finish its pending work
void wait() override;
// Create asynchronous event object
AsyncEvent createAsyncEvent() override;
// Copy memory from/to device
AsyncEvent memcpy(void *dest, const void *src, std::size_t size) override;
// Launch a kernel on a device
AsyncEvent launchRendererKernel(const vec3ui &itemDims,
RendererKernel kernel,
ispc::Renderer *renderer,
ispc::FrameBuffer *fb,
ispc::Camera *camera,
ispc::World *world,
const uint32_t *taskIDs,
const FeatureFlags &ff) override;
AsyncEvent launchFrameOpKernel(const vec2ui &itemDims,
FrameOpKernel kernel,
const ispc::FrameBufferView *fbv) override;
// Launch a given task on a host using device queue ordering
AsyncEvent launchHostTask(const std::function<void()> &task) override;
// For code (e.g. OIDN API) that is able to use SYCL without including it
void *getSyclDevicePtr() override;
void *getSyclContextPtr() override;
void *getSyclQueuePtr() override;
private:
// Inner command classes
class Command;
class CommandShutdown;
class CommandMemCpy;
class CommandLaunchRenderKernel;
class CommandLaunchFrameOpKernel;
class CommandRunHostTask;
using CommandPtr = std::unique_ptr<Command>;
// Device command queue
std::queue<CommandPtr> commandQueue;
std::mutex queueMtx;
std::condition_variable queueCV;
// Device worker thread
std::thread workerThread;
// Schedule command for execution
void scheduleCommand(CommandPtr cmd);
};
/////////////////////////////////////////////////////////////////////
// Buffer in device memory with system memory shadow
template <typename T>
struct BufferDeviceShadowedImpl : public BufferDeviceShadowed<T>
{
// Inherit constructors
BufferDeviceShadowedImpl(Device &device, std::size_t count);
BufferDeviceShadowedImpl(Device &device, const std::vector<T> &v);
BufferDeviceShadowedImpl(Device &device, T *data, std::size_t count);
protected:
// Copy between device and shadow buffers
AsyncEvent memcpy(T *, const T *, std::size_t) override
{
return AsyncEvent();
}
};
template <typename T>
BufferDeviceShadowedImpl<T>::BufferDeviceShadowedImpl(
Device &device, std::size_t count)
: BufferDeviceShadowed<T>(device, nullptr, count)
{}
template <typename T>
BufferDeviceShadowedImpl<T>::BufferDeviceShadowedImpl(
Device &device, const std::vector<T> &v)
: BufferDeviceShadowed<T>(device, nullptr, v)
{}
template <typename T>
BufferDeviceShadowedImpl<T>::BufferDeviceShadowedImpl(
Device &device, T *data, std::size_t count)
: BufferDeviceShadowed<T>(device, nullptr, data, count)
{}
} // namespace devicert
} // namespace ospray
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