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/*
* Copyright (C) 2019-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/program/sync_buffer_handler.h"
#include "shared/source/command_stream/command_stream_receiver.h"
#include "shared/source/memory_manager/graphics_allocation.h"
#include "shared/source/memory_manager/memory_manager.h"
#include "opencl/source/kernel/kernel.h"
namespace NEO {
SyncBufferHandler::~SyncBufferHandler() {
memoryManager.checkGpuUsageAndDestroyGraphicsAllocations(graphicsAllocation);
};
SyncBufferHandler::SyncBufferHandler(Device &device)
: device(device), memoryManager(*device.getMemoryManager()) {
allocateNewBuffer();
}
void SyncBufferHandler::prepareForEnqueue(size_t workGroupsCount, Kernel &kernel) {
auto requiredSize = workGroupsCount;
std::lock_guard<std::mutex> guard(this->mutex);
bool isCurrentBufferFull = (usedBufferSize + requiredSize > bufferSize);
if (isCurrentBufferFull) {
memoryManager.checkGpuUsageAndDestroyGraphicsAllocations(graphicsAllocation);
allocateNewBuffer();
usedBufferSize = 0;
}
kernel.patchSyncBuffer(device, graphicsAllocation, usedBufferSize);
usedBufferSize += requiredSize;
}
void SyncBufferHandler::makeResident(CommandStreamReceiver &csr) {
csr.makeResident(*graphicsAllocation);
}
void SyncBufferHandler::allocateNewBuffer() {
AllocationProperties allocationProperties{device.getRootDeviceIndex(), true, bufferSize,
GraphicsAllocation::AllocationType::LINEAR_STREAM,
false, false, device.getDeviceBitfield()};
graphicsAllocation = memoryManager.allocateGraphicsMemoryWithProperties(allocationProperties);
UNRECOVERABLE_IF(graphicsAllocation == nullptr);
auto cpuPointer = graphicsAllocation->getUnderlyingBuffer();
std::memset(cpuPointer, 0, bufferSize);
}
} // namespace NEO
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