IVGCVSW-3444 File Only Profiling Connection

    * Add FileOnlyProfilingConnection Decorator
    * Fix bug where Conn Ack not automatically sent back
    * Modify GatordMock to use the Counter Directory class.
    * Promote DirectoryCaptureCommandHandler from GatordMock into ArmNN.
    * Remove MockUtils as it's contents were moved or deleted.
    * Rewrite GatordMockTests to use Counter Directory class.
    * Flush streams in ProfilingConnectionDumpToFileDecorator::Close.

Signed-off-by: Keith Davis <keith.davis@arm.com>
Signed-off-by: Colm Donelan <Colm.Donelan@arm.com>
Change-Id: I77b2aedece24150dd31691b577f3b5d81b2e226f
diff --git a/src/profiling/DirectoryCaptureCommandHandler.cpp b/src/profiling/DirectoryCaptureCommandHandler.cpp
new file mode 100644
index 0000000..22d1e6d
--- /dev/null
+++ b/src/profiling/DirectoryCaptureCommandHandler.cpp
@@ -0,0 +1,336 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "DirectoryCaptureCommandHandler.hpp"
+#include "SendCounterPacket.hpp"
+
+#include <iostream>
+
+namespace armnn
+{
+
+namespace profiling
+{
+
+// Utils
+uint32_t uint16_t_size = sizeof(uint16_t);
+uint32_t uint32_t_size = sizeof(uint32_t);
+
+void DirectoryCaptureCommandHandler::ParseData(const armnn::profiling::Packet& packet)
+{
+    uint16_t categoryRecordCount;
+    uint16_t counterSetRecordCount;
+    uint16_t deviceRecordCount;
+
+    uint32_t offset = 0;
+
+    if (packet.GetLength() < 8)
+    {
+        std::cout << "Counter directory packet received." << std::endl;
+        return;
+    }
+
+    const unsigned char* data = packet.GetData();
+    // Body header word 0:
+    // 0:15  [16] reserved: all zeros
+    offset += uint16_t_size;
+    // 16:31 [16] device_records_count: number of entries in the device_records_pointer_table
+    deviceRecordCount = profiling::ReadUint16(data, offset);
+    offset += uint16_t_size;
+
+    // Body header word 1:
+    // 0:31 [32] device_records_pointer_table_offset: offset to the device_records_pointer_table
+    // The offset is always zero here, as the device record pointer table field is always the first item in the pool
+    offset += uint32_t_size;
+
+    // Body header word 2:
+    // 0:15  [16] reserved: all zeros
+    offset += uint16_t_size;
+    // 16:31 [16] counter_set_count: number of entries in the counter_set_pointer_table
+    counterSetRecordCount = profiling::ReadUint16(data, offset);
+    offset += uint16_t_size;
+
+    // Body header word 3:
+    // 0:31 [32] counter_set_pointer_table_offset: offset to the counter_set_pointer_table
+    // counterPointerTableSetOffset = profiling::ReadUint32(data, offset);
+    offset += uint32_t_size;
+
+    // Body header word 4:
+    // 0:15  [16] reserved: all zeros
+    offset += uint16_t_size;
+    // 16:31 [16] categories_count: number of entries in the categories_pointer_table
+    categoryRecordCount = profiling::ReadUint16(data, offset);
+    offset += uint16_t_size;
+
+    // Body header word 5:
+    // 0:31 [32] categories_pointer_table_offset: offset to the categories_pointer_table
+    // categoriesPointerTableOffset = profiling::ReadUint32(data, offset);
+    offset += uint32_t_size;
+
+    std::vector<uint32_t> deviceRecordOffsets(deviceRecordCount);
+    std::vector<uint32_t> counterSetOffsets(counterSetRecordCount);
+    std::vector<uint32_t> categoryOffsets(categoryRecordCount);
+
+    for (uint32_t i = 0; i < deviceRecordCount; ++i)
+    {
+        deviceRecordOffsets[i] = profiling::ReadUint32(data, offset);
+        offset += uint32_t_size;
+    }
+
+    for (uint32_t i = 0; i < counterSetRecordCount; ++i)
+    {
+        counterSetOffsets[i] = profiling::ReadUint32(data, offset);
+        offset += uint32_t_size;
+    }
+
+    for (uint32_t i = 0; i < categoryRecordCount; ++i)
+    {
+        categoryOffsets[i] = profiling::ReadUint32(data, offset);
+        offset += uint32_t_size;
+    }
+
+    for (uint32_t deviceIndex = 0; deviceIndex < deviceRecordCount; ++deviceIndex)
+    {
+        uint32_t deviceRecordOffset = offset + deviceRecordOffsets[deviceIndex];
+        // Device record word 0:
+        // 0:15  [16] cores: the number of individual streams of counters for one or more cores of some device
+        uint16_t deviceCores = profiling::ReadUint16(data, deviceRecordOffset);
+        // 16:31 [16] deviceUid: the unique identifier for the device
+        deviceRecordOffset += uint16_t_size;
+        uint16_t deviceUid = profiling::ReadUint16(data, deviceRecordOffset);
+        deviceRecordOffset += uint16_t_size;
+
+        // Device record word 1:
+        // Offset from the beginning of the device record pool to the name field.
+        uint32_t nameOffset = profiling::ReadUint32(data, deviceRecordOffset);
+
+        deviceRecordOffset += uint32_t_size;
+        deviceRecordOffset += uint32_t_size;
+        deviceRecordOffset += nameOffset;
+
+        const std::string& deviceName             = GetStringNameFromBuffer(data, deviceRecordOffset);
+        const Device* registeredDevice            = m_CounterDirectory.RegisterDevice(deviceName, deviceCores);
+        m_UidTranslation[registeredDevice->m_Uid] = deviceUid;
+    }
+
+    for (uint32_t counterSetIndex = 0; counterSetIndex < counterSetRecordCount; ++counterSetIndex)
+    {
+        uint32_t counterSetOffset = offset + counterSetOffsets[counterSetIndex];
+
+        // Counter set record word 0:
+        // 0:15  [16] count: the number of counters which can be active in this set at any one time
+        uint16_t counterSetCount = profiling::ReadUint16(data, counterSetOffset);
+        counterSetOffset += uint16_t_size;
+
+        // 16:31 [16] deviceUid: the unique identifier for the counter_set
+        uint16_t counterSetUid = profiling::ReadUint16(data, counterSetOffset);
+        counterSetOffset += uint16_t_size;
+
+        // Counter set record word 1:
+        // 0:31 [32] name_offset: offset from the beginning of the counter set pool to the name field
+        // The offset is always zero here, as the name field is always the first (and only) item in the pool
+        counterSetOffset += uint32_t_size;
+        counterSetOffset += uint32_t_size;
+
+        auto counterSet =
+            m_CounterDirectory.RegisterCounterSet(GetStringNameFromBuffer(data, counterSetOffset), counterSetCount);
+        m_UidTranslation[counterSet->m_Uid] = counterSetUid;
+    }
+    ReadCategoryRecords(data, offset, categoryOffsets);
+}
+
+void DirectoryCaptureCommandHandler::ReadCategoryRecords(const unsigned char* const data,
+                                                         uint32_t offset,
+                                                         std::vector<uint32_t> categoryOffsets)
+{
+    uint32_t categoryRecordCount = static_cast<uint32_t>(categoryOffsets.size());
+
+    for (uint32_t categoryIndex = 0; categoryIndex < categoryRecordCount; ++categoryIndex)
+    {
+        uint32_t categoryRecordOffset = offset + categoryOffsets[categoryIndex];
+
+        // Category record word 0:
+        // 0:15  The deviceUid of a counter_set the category is associated with.
+        // Set to zero if the category is NOT associated with a counter set.
+        uint16_t counterSetUid = profiling::ReadUint16(data, categoryRecordOffset);
+        categoryRecordOffset += uint16_t_size;
+
+        // 16:31 The deviceUid of a device element which identifies some hardware device that the category belongs to.
+        // Set to zero if the category is NOT associated with a device
+        uint16_t deviceUid = profiling::ReadUint16(data, categoryRecordOffset);
+
+        categoryRecordOffset += uint16_t_size;
+
+        // Category record word 1:
+        // 0:15 Reserved, value 0x0000.
+        categoryRecordOffset += uint16_t_size;
+        // 16:31 Number of events belonging to this category.
+        uint32_t eventCount = profiling::ReadUint16(data, categoryRecordOffset);
+        categoryRecordOffset += uint16_t_size;
+
+        // Category record word 2
+        // 0:31  Offset from the beginning of the category data pool to the event_pointer_table
+        uint32_t eventPointerTableOffset = profiling::ReadUint32(data, categoryRecordOffset);
+        categoryRecordOffset += uint32_t_size;
+
+        // Category record word 3
+        // 0:31 Offset from the beginning of the category data pool to the name field.
+        uint32_t nameOffset = profiling::ReadUint32(data, categoryRecordOffset);
+        categoryRecordOffset += uint32_t_size;
+
+        std::vector<uint32_t> eventRecordsOffsets(eventCount);
+
+        eventPointerTableOffset += categoryRecordOffset;
+
+        for (uint32_t eventIndex = 0; eventIndex < eventCount; ++eventIndex)
+        {
+            eventRecordsOffsets[eventIndex] =
+                profiling::ReadUint32(data, eventPointerTableOffset + uint32_t_size * eventIndex);
+        }
+
+        const std::vector<CounterDirectoryEventRecord>& eventRecords =
+            ReadEventRecords(data, categoryRecordOffset, eventRecordsOffsets);
+        categoryRecordOffset += uint32_t_size;
+
+        const Category* category = m_CounterDirectory.RegisterCategory(
+            GetStringNameFromBuffer(data, categoryRecordOffset + nameOffset), deviceUid, counterSetUid);
+        for (auto& counter : eventRecords)
+        {
+            const Counter* registeredCounter = m_CounterDirectory.RegisterCounter(
+                category->m_Name, counter.m_CounterClass, counter.m_CounterInterpolation, counter.m_CounterMultiplier,
+                counter.m_CounterName, counter.m_CounterDescription, counter.m_CounterUnits);
+            m_UidTranslation[registeredCounter->m_Uid] = counter.m_CounterUid;
+        }
+    }
+}
+
+std::vector<CounterDirectoryEventRecord> DirectoryCaptureCommandHandler::ReadEventRecords(
+    const unsigned char* data, uint32_t offset, std::vector<uint32_t> eventRecordsOffsets)
+{
+    uint32_t eventCount = static_cast<uint32_t>(eventRecordsOffsets.size());
+
+    std::vector<CounterDirectoryEventRecord> eventRecords(eventCount);
+    for (unsigned long i = 0; i < eventCount; ++i)
+    {
+        uint32_t eventRecordOffset = eventRecordsOffsets[i] + offset;
+
+        // Event record word 0:
+        // 0:15  [16] count_uid: unique ID for the counter. Must be unique across all counters in all categories
+        eventRecords[i].m_CounterUid = profiling::ReadUint16(data, eventRecordOffset);
+        eventRecordOffset += uint16_t_size;
+        // 16:31 [16] max_counter_uid: if the device this event is associated with has more than one core and there
+        //                             is one of these counters per core this value will be set to
+        //                             (counter_uid + cores (from device_record)) - 1.
+        //                             If there is only a single core then this value will be the same as
+        //                             the counter_uid value
+        eventRecords[i].m_MaxCounterUid = profiling::ReadUint16(data, eventRecordOffset);
+        eventRecordOffset += uint16_t_size;
+
+        // Event record word 1:
+        // 0:15  [16] counter_set: UID of the counter_set this event is associated with. Set to zero if the event
+        //                         is NOT associated with a counter_set
+        eventRecords[i].m_DeviceUid = profiling::ReadUint16(data, eventRecordOffset);
+        eventRecordOffset += uint16_t_size;
+
+        // 16:31 [16] device: UID of the device this event is associated with. Set to zero if the event is NOT
+        //                    associated with a device
+        eventRecords[i].m_CounterSetUid = profiling::ReadUint16(data, eventRecordOffset);
+        eventRecordOffset += uint16_t_size;
+
+        // Event record word 2:
+        // 0:15  [16] interpolation: type describing how to interpolate each data point in a stream of data points
+        eventRecords[i].m_CounterClass = profiling::ReadUint16(data, eventRecordOffset);
+        eventRecordOffset += uint16_t_size;
+
+        // 16:31 [16] class: type describing how to treat each data point in a stream of data points
+        eventRecords[i].m_CounterInterpolation = profiling::ReadUint16(data, eventRecordOffset);
+        eventRecordOffset += uint16_t_size;
+
+        // Event record word 3-4:
+        // 0:63 [64] multiplier: internal data stream is represented as integer values, this allows scaling of
+        //                       those values as if they are fixed point numbers. Zero is not a valid value
+        uint32_t multiplier[2] = { 0u, 0u };
+
+        multiplier[0] = profiling::ReadUint32(data, eventRecordOffset);
+        eventRecordOffset += uint32_t_size;
+        multiplier[1] = profiling::ReadUint32(data, eventRecordOffset);
+        eventRecordOffset += uint32_t_size;
+
+        std::memcpy(&eventRecords[i].m_CounterMultiplier, &multiplier, sizeof(multiplier));
+
+        // Event record word 5:
+        // 0:31 [32] name_eventRecordOffset: eventRecordOffset from the
+        // beginning of the event record pool to the name field
+        // The eventRecordOffset is always zero here, as the name field is always the first item in the pool
+        eventRecordOffset += uint32_t_size;
+
+        // Event record word 6:
+        // 0:31 [32] description_eventRecordOffset: eventRecordOffset from the
+        // beginning of the event record pool to the description field
+        // The size of the name buffer in bytes
+        uint32_t descriptionOffset = profiling::ReadUint32(data, eventRecordOffset);
+        eventRecordOffset += uint32_t_size;
+
+        // Event record word 7:
+        // 0:31 [32] units_eventRecordOffset: (optional) eventRecordOffset from the
+        // beginning of the event record pool to the units field.
+        // An eventRecordOffset value of zero indicates this field is not provided
+        uint32_t unitsOffset = profiling::ReadUint32(data, eventRecordOffset);
+        eventRecordOffset += uint32_t_size;
+        eventRecordOffset += uint32_t_size;
+
+        eventRecords[i].m_CounterName = GetStringNameFromBuffer(data, eventRecordOffset);
+
+        eventRecords[i].m_CounterDescription = GetStringNameFromBuffer(data, eventRecordOffset + descriptionOffset);
+
+        eventRecords[i].m_CounterUnits = GetStringNameFromBuffer(data, eventRecordOffset + unitsOffset);
+    }
+
+    return eventRecords;
+}
+
+void DirectoryCaptureCommandHandler::operator()(const profiling::Packet& packet)
+{
+    if (!m_QuietOperation)    // Are we supposed to print to stdout?
+    {
+        std::cout << "Counter directory packet received." << std::endl;
+    }
+
+    // The ArmNN counter directory is static per ArmNN instance. Ensure we don't parse it a second time.
+    if (!ParsedCounterDirectory())
+    {
+        ParseData(packet);
+        m_AlreadyParsed = true;
+    }
+
+    if (!m_QuietOperation)
+    {
+        armnn::profiling::PrintCounterDirectory(m_CounterDirectory);
+    }
+}
+
+const ICounterDirectory& DirectoryCaptureCommandHandler::GetCounterDirectory() const
+{
+    return m_CounterDirectory;
+}
+
+std::string DirectoryCaptureCommandHandler::GetStringNameFromBuffer(const unsigned char* const data, uint32_t offset)
+{
+    std::string deviceName;
+    u_char nextChar = profiling::ReadUint8(data, offset);
+
+    while (isprint(nextChar))
+    {
+        deviceName += static_cast<char>(nextChar);
+        offset++;
+        nextChar = profiling::ReadUint8(data, offset);
+    }
+
+    return deviceName;
+}
+
+}    // namespace profiling
+
+}    // namespace armnn
\ No newline at end of file