Colm Donelan | a21620d | 2019-10-11 13:09:49 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2019 Arm Ltd. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #pragma once |
| 7 | |
| 8 | #include <string> |
| 9 | #include <thread> |
| 10 | #include <atomic> |
| 11 | |
| 12 | #include "../../src/profiling/CommandHandlerRegistry.hpp" |
| 13 | #include "../../src/profiling/Packet.hpp" |
| 14 | |
| 15 | namespace armnn |
| 16 | { |
| 17 | |
| 18 | namespace gatordmock |
| 19 | { |
| 20 | |
| 21 | enum class TargetEndianness |
| 22 | { |
| 23 | BeWire, LeWire |
| 24 | }; |
| 25 | |
| 26 | enum class PacketDirection |
| 27 | { |
| 28 | Sending, Received |
| 29 | }; |
| 30 | |
| 31 | /// A class that implements a Mock Gatord server. It will listen on a specified Unix domain socket (UDS) |
| 32 | /// namespace for client connections. It will then allow opertaions to manage coutners while receiving counter data. |
| 33 | class GatordMockService |
| 34 | { |
| 35 | public: |
| 36 | |
| 37 | |
| 38 | /// @param registry reference to a command handler registry. |
| 39 | /// @param echoPackets if true the raw packets will be printed to stdout. |
| 40 | GatordMockService(armnn::profiling::CommandHandlerRegistry& registry, bool echoPackets) |
| 41 | : m_HandlerRegistry(registry) |
| 42 | , m_EchoPackets(echoPackets) |
| 43 | { |
| 44 | m_PacketsReceivedCount.store(0, std::memory_order_relaxed); |
| 45 | } |
| 46 | |
| 47 | ~GatordMockService() |
| 48 | { |
| 49 | // We have set SOCK_CLOEXEC on these sockets but we'll close them to be good citizens. |
| 50 | close(m_ClientConnection); |
| 51 | close(m_ListeningSocket); |
| 52 | } |
| 53 | |
| 54 | /// Establish the Unix domain socket and set it to listen for connections. |
| 55 | /// @param udsNamespace the namespace (socket address) associated with the listener. |
| 56 | /// @return true only if the socket has been correctly setup. |
| 57 | bool OpenListeningSocket(std::string udsNamespace); |
| 58 | |
| 59 | /// Block waiting to accept one client to connect to the UDS. |
| 60 | /// @return the file descriptor of the client connection. |
| 61 | int BlockForOneClient(); |
| 62 | |
| 63 | /// Once the connection is open wait to receive the stream meta data packet from the client. Reading this |
| 64 | /// packet differs from others as we need to determine endianness. |
| 65 | /// @return true only if a valid stream met data packet has been received. |
| 66 | bool WaitForStreamMetaData(); |
| 67 | |
| 68 | /// Send a connection acknowledged packet back to the client. |
| 69 | void SendConnectionAck(); |
| 70 | |
| 71 | /// Start the thread that will receive all packets and print them nicely to stdout. |
| 72 | bool LaunchReceivingThread(); |
| 73 | |
| 74 | /// Return the total number of periodic counter capture packets received since the receive thread started. |
| 75 | /// @return number of periodic counter capture packets received. |
| 76 | uint32_t GetPacketsReceivedCount() |
| 77 | { |
| 78 | return m_PacketsReceivedCount.load(std::memory_order_acquire); |
| 79 | } |
| 80 | |
| 81 | /// This is a placeholder method to prevent main exiting. It can be removed once the |
| 82 | /// command handling code is added. |
| 83 | void WaitForReceivingThread(); |
| 84 | |
| 85 | /// Send the counter list to ArmNN. |
| 86 | void SendPeriodicCounterSelectionList(uint period, std::vector<uint16_t> counters); |
| 87 | |
| 88 | /// Execute the WAIT command from the comamnd file. |
| 89 | void WaitCommand(uint timeout); |
| 90 | |
| 91 | uint32_t GetStreamMetadataVersion() |
| 92 | { |
| 93 | return m_StreamMetaDataVersion; |
| 94 | } |
| 95 | |
| 96 | uint32_t GetStreamMetadataMaxDataLen() |
| 97 | { |
| 98 | return m_StreamMetaDataMaxDataLen; |
| 99 | } |
| 100 | |
| 101 | uint32_t GetStreamMetadataPid() |
| 102 | { |
| 103 | return m_StreamMetaDataPid; |
| 104 | } |
| 105 | |
| 106 | private: |
| 107 | |
| 108 | void ReceiveLoop(GatordMockService& mockService); |
| 109 | |
| 110 | /// Block on the client connection until a complete packet has been received. This is a placeholder function to |
| 111 | /// enable early testing of the tool. |
| 112 | /// @return true if a valid packet has been received. |
| 113 | armnn::profiling::Packet WaitForPacket(uint32_t timeoutMs); |
| 114 | |
| 115 | armnn::profiling::Packet ReceivePacket(); |
| 116 | |
| 117 | bool SendPacket(uint32_t packetFamily, uint32_t packetId, const u_char* data, uint32_t dataLength); |
| 118 | |
| 119 | void EchoPacket(PacketDirection direction, u_char* packet, size_t lengthInBytes); |
| 120 | |
| 121 | bool ReadHeader(uint32_t headerAsWords[2]); |
| 122 | |
| 123 | bool ReadFromSocket(u_char* packetData, uint32_t expectedLength); |
| 124 | |
| 125 | uint32_t ToUint32(u_char* data, TargetEndianness endianness); |
| 126 | |
| 127 | void InsertU32(uint32_t value, u_char* data, TargetEndianness endianness); |
| 128 | |
| 129 | static const uint32_t PIPE_MAGIC = 0x45495434; |
| 130 | |
| 131 | std::atomic<uint32_t> m_PacketsReceivedCount; |
| 132 | TargetEndianness m_Endianness; |
| 133 | uint32_t m_StreamMetaDataVersion; |
| 134 | uint32_t m_StreamMetaDataMaxDataLen; |
| 135 | uint32_t m_StreamMetaDataPid; |
| 136 | |
| 137 | armnn::profiling::CommandHandlerRegistry& m_HandlerRegistry; |
| 138 | |
| 139 | bool m_EchoPackets; |
| 140 | int m_ListeningSocket; |
| 141 | int m_ClientConnection; |
| 142 | std::thread m_ListeningThread; |
| 143 | std::atomic<bool> m_CloseReceivingThread; |
| 144 | }; |
| 145 | } // namespace gatordmock |
| 146 | |
| 147 | } // namespace armnn |
| 148 | |
| 149 | |