Narumol Prangnawarat | 7be47ef | 2019-09-27 18:00:11 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2019 Arm Ltd. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #include "BufferManager.hpp" |
| 7 | #include "PacketBuffer.hpp" |
| 8 | #include "ProfilingUtils.hpp" |
| 9 | |
| 10 | #include <armnn/Exceptions.hpp> |
| 11 | |
| 12 | namespace armnn |
| 13 | { |
| 14 | |
| 15 | namespace profiling |
| 16 | { |
| 17 | |
| 18 | BufferManager::BufferManager(unsigned int numberOfBuffers, unsigned int maxPacketSize) |
| 19 | : m_MaxBufferSize(maxPacketSize) |
| 20 | { |
| 21 | m_AvailableList.reserve(numberOfBuffers); |
| 22 | for (unsigned int i = 0; i < numberOfBuffers; ++i) |
| 23 | { |
| 24 | std::unique_ptr<IPacketBuffer> buffer = std::make_unique<PacketBuffer>(maxPacketSize); |
| 25 | m_AvailableList.emplace_back(std::move(buffer)); |
| 26 | } |
| 27 | m_ReadableList.reserve(numberOfBuffers); |
| 28 | } |
| 29 | |
| 30 | std::unique_ptr<IPacketBuffer> BufferManager::Reserve(unsigned int requestedSize, unsigned int& reservedSize) |
| 31 | { |
Narumol Prangnawarat | 0ec068f | 2019-09-30 16:20:20 +0100 | [diff] [blame^] | 32 | reservedSize = 0; |
Narumol Prangnawarat | 7be47ef | 2019-09-27 18:00:11 +0100 | [diff] [blame] | 33 | std::unique_lock<std::mutex> availableListLock(m_AvailableMutex, std::defer_lock); |
| 34 | if (requestedSize > m_MaxBufferSize) |
| 35 | { |
Narumol Prangnawarat | 0ec068f | 2019-09-30 16:20:20 +0100 | [diff] [blame^] | 36 | return nullptr; |
Narumol Prangnawarat | 7be47ef | 2019-09-27 18:00:11 +0100 | [diff] [blame] | 37 | } |
| 38 | availableListLock.lock(); |
| 39 | if (m_AvailableList.empty()) |
| 40 | { |
Narumol Prangnawarat | 0ec068f | 2019-09-30 16:20:20 +0100 | [diff] [blame^] | 41 | availableListLock.unlock(); |
| 42 | return nullptr; |
Narumol Prangnawarat | 7be47ef | 2019-09-27 18:00:11 +0100 | [diff] [blame] | 43 | } |
| 44 | std::unique_ptr<IPacketBuffer> buffer = std::move(m_AvailableList.back()); |
| 45 | m_AvailableList.pop_back(); |
| 46 | availableListLock.unlock(); |
| 47 | reservedSize = requestedSize; |
| 48 | return buffer; |
| 49 | } |
| 50 | |
| 51 | void BufferManager::Commit(std::unique_ptr<IPacketBuffer>& packetBuffer, unsigned int size) |
| 52 | { |
| 53 | std::unique_lock<std::mutex> readableListLock(m_ReadableMutex, std::defer_lock); |
| 54 | packetBuffer->Commit(size); |
| 55 | readableListLock.lock(); |
| 56 | m_ReadableList.push_back(std::move(packetBuffer)); |
| 57 | readableListLock.unlock(); |
| 58 | m_ReadDataAvailable.notify_one(); |
| 59 | } |
| 60 | |
| 61 | void BufferManager::Release(std::unique_ptr<IPacketBuffer>& packetBuffer) |
| 62 | { |
| 63 | std::unique_lock<std::mutex> availableListLock(m_AvailableMutex, std::defer_lock); |
| 64 | packetBuffer->Release(); |
| 65 | availableListLock.lock(); |
| 66 | m_AvailableList.push_back(std::move(packetBuffer)); |
| 67 | availableListLock.unlock(); |
| 68 | } |
| 69 | |
| 70 | std::unique_ptr<IPacketBuffer> BufferManager::GetReadableBuffer() |
| 71 | { |
| 72 | std::unique_lock<std::mutex> readableListLock(m_ReadableMutex); |
| 73 | if (!m_ReadableList.empty()) |
| 74 | { |
| 75 | std::unique_ptr<IPacketBuffer> buffer = std::move(m_ReadableList.back()); |
| 76 | m_ReadableList.pop_back(); |
| 77 | readableListLock.unlock(); |
| 78 | return buffer; |
| 79 | } |
| 80 | return nullptr; |
| 81 | } |
| 82 | |
| 83 | void BufferManager::MarkRead(std::unique_ptr<IPacketBuffer>& packetBuffer) |
| 84 | { |
| 85 | std::unique_lock<std::mutex> availableListLock(m_AvailableMutex, std::defer_lock); |
| 86 | packetBuffer->MarkRead(); |
| 87 | availableListLock.lock(); |
| 88 | m_AvailableList.push_back(std::move(packetBuffer)); |
| 89 | availableListLock.unlock(); |
| 90 | } |
| 91 | |
| 92 | } // namespace profiling |
| 93 | |
| 94 | } // namespace armnn |