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//===-- SimpleHostPlatformDevice.h - Host device for testing ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// The SimpleHostPlatformDevice class is a streamexecutor::PlatformDevice that
/// is really just the host processor and memory. It is useful for testing
/// because no extra device platform is required.
///
//===----------------------------------------------------------------------===//
#ifndef STREAMEXECUTOR_LIB_UNITTESTS_SIMPLEHOSTPLATFORMDEVICE_H
#define STREAMEXECUTOR_LIB_UNITTESTS_SIMPLEHOSTPLATFORMDEVICE_H
#include <cstdlib>
#include <cstring>
#include "streamexecutor/PlatformInterfaces.h"
namespace streamexecutor {
namespace test {
/// A streamexecutor::PlatformDevice that simply forwards all operations to the
/// host platform.
///
/// The allocate and copy methods are simple wrappers for std::malloc and
/// std::memcpy.
class SimpleHostPlatformDevice : public streamexecutor::PlatformDevice {
public:
std::string getName() const override { return "SimpleHostPlatformDevice"; }
streamexecutor::Expected<
std::unique_ptr<streamexecutor::PlatformStreamHandle>>
createStream() override {
return nullptr;
}
streamexecutor::Expected<void *>
allocateDeviceMemory(size_t ByteCount) override {
return std::malloc(ByteCount);
}
streamexecutor::Error freeDeviceMemory(const void *Handle) override {
std::free(const_cast<void *>(Handle));
return streamexecutor::Error::success();
}
streamexecutor::Expected<void *>
allocateHostMemory(size_t ByteCount) override {
return std::malloc(ByteCount);
}
streamexecutor::Error freeHostMemory(void *Memory) override {
std::free(const_cast<void *>(Memory));
return streamexecutor::Error::success();
}
streamexecutor::Error registerHostMemory(void *Memory,
size_t ByteCount) override {
return streamexecutor::Error::success();
}
streamexecutor::Error unregisterHostMemory(void *Memory) override {
return streamexecutor::Error::success();
}
streamexecutor::Error copyD2H(streamexecutor::PlatformStreamHandle *S,
const void *DeviceHandleSrc,
size_t SrcByteOffset, void *HostDst,
size_t DstByteOffset,
size_t ByteCount) override {
std::memcpy(static_cast<char *>(HostDst) + DstByteOffset,
static_cast<const char *>(DeviceHandleSrc) + SrcByteOffset,
ByteCount);
return streamexecutor::Error::success();
}
streamexecutor::Error copyH2D(streamexecutor::PlatformStreamHandle *S,
const void *HostSrc, size_t SrcByteOffset,
const void *DeviceHandleDst,
size_t DstByteOffset,
size_t ByteCount) override {
std::memcpy(static_cast<char *>(const_cast<void *>(DeviceHandleDst)) +
DstByteOffset,
static_cast<const char *>(HostSrc) + SrcByteOffset, ByteCount);
return streamexecutor::Error::success();
}
streamexecutor::Error
copyD2D(streamexecutor::PlatformStreamHandle *S, const void *DeviceHandleSrc,
size_t SrcByteOffset, const void *DeviceHandleDst,
size_t DstByteOffset, size_t ByteCount) override {
std::memcpy(static_cast<char *>(const_cast<void *>(DeviceHandleDst)) +
DstByteOffset,
static_cast<const char *>(DeviceHandleSrc) + SrcByteOffset,
ByteCount);
return streamexecutor::Error::success();
}
streamexecutor::Error synchronousCopyD2H(const void *DeviceHandleSrc,
size_t SrcByteOffset, void *HostDst,
size_t DstByteOffset,
size_t ByteCount) override {
std::memcpy(static_cast<char *>(HostDst) + DstByteOffset,
static_cast<const char *>(DeviceHandleSrc) + SrcByteOffset,
ByteCount);
return streamexecutor::Error::success();
}
streamexecutor::Error synchronousCopyH2D(const void *HostSrc,
size_t SrcByteOffset,
const void *DeviceHandleDst,
size_t DstByteOffset,
size_t ByteCount) override {
std::memcpy(static_cast<char *>(const_cast<void *>(DeviceHandleDst)) +
DstByteOffset,
static_cast<const char *>(HostSrc) + SrcByteOffset, ByteCount);
return streamexecutor::Error::success();
}
streamexecutor::Error synchronousCopyD2D(const void *DeviceHandleSrc,
size_t SrcByteOffset,
const void *DeviceHandleDst,
size_t DstByteOffset,
size_t ByteCount) override {
std::memcpy(static_cast<char *>(const_cast<void *>(DeviceHandleDst)) +
DstByteOffset,
static_cast<const char *>(DeviceHandleSrc) + SrcByteOffset,
ByteCount);
return streamexecutor::Error::success();
}
/// Gets the value at the given index from a GlobalDeviceMemory<T> instance
/// created by this class.
template <typename T>
static T getDeviceValue(const streamexecutor::GlobalDeviceMemory<T> &Memory,
size_t Index) {
return static_cast<const T *>(Memory.getHandle())[Index];
}
};
} // namespace test
} // namespace streamexecutor
#endif // STREAMEXECUTOR_LIB_UNITTESTS_SIMPLEHOSTPLATFORMDEVICE_H
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