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author | Matteo Martincigh <matteo.martincigh@arm.com> | 2019-10-01 14:25:34 +0100 |
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committer | Matteo Martincigh <matteo.martincigh@arm.com> | 2019-10-03 12:37:13 +0000 |
commit | 0aed4f9820983afabaf682af3a603f1aab1bf823 (patch) | |
tree | 8b10750f7f21240061e9e594ba1c0e642b3c34d4 /src/profiling/ProfilingUtils.cpp | |
parent | 781ced9d1472486f86314e320a00d62329dcd363 (diff) | |
download | armnn-0aed4f9820983afabaf682af3a603f1aab1bf823.tar.gz |
IVGCVSW-3927 Create the Timeline Label Binary Packet
* Added a new utility function to create a Timeline Label
Binary Packet and write it to a given buffer
* Added new enumeration to be reused for subsequent utility
functions
* Added unit tests
Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
Change-Id: Icbabefb9050f3f3b1a30082eabf875593378001f
Diffstat (limited to 'src/profiling/ProfilingUtils.cpp')
-rw-r--r-- | src/profiling/ProfilingUtils.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/profiling/ProfilingUtils.cpp b/src/profiling/ProfilingUtils.cpp index 588fcc11e4..23386f86f4 100644 --- a/src/profiling/ProfilingUtils.cpp +++ b/src/profiling/ProfilingUtils.cpp @@ -239,6 +239,98 @@ std::string GetProcessName() return name; } +TimelinePacketStatus WriteTimelineLabelBinaryPacket(uint64_t profilingGuid, + const std::string& label, + unsigned char* buffer, + unsigned int bufferSize, + unsigned int& numberOfBytesWritten) +{ + // Initialize the ouput value + numberOfBytesWritten = 0; + + // Check that the given buffer is valid + if (buffer == nullptr || bufferSize == 0) + { + return TimelinePacketStatus::BufferExhaustion; + } + + // Utils + unsigned int uint32_t_size = sizeof(uint32_t); + unsigned int uint64_t_size = sizeof(uint64_t); + + // Convert the label into a SWTrace string + std::vector<uint32_t> swTraceLabel; + bool result = StringToSwTraceString<SwTraceCharPolicy>(label, swTraceLabel); + if (!result) + { + return TimelinePacketStatus::Error; + } + + // Calculate the size of the SWTrace string label (in bytes) + unsigned int swTraceLabelSize = boost::numeric_cast<unsigned int>(swTraceLabel.size()) * uint32_t_size; + + // Calculate the length of the data (in bytes) + unsigned int timelineLabelPacketDataLength = uint64_t_size + // Profiling GUID + swTraceLabelSize; // Label + + // Calculate the timeline binary packet size (in bytes) + unsigned int timelineLabelPacketSize = 2 * uint32_t_size + // Header (2 words) + timelineLabelPacketDataLength; // Profiling GUID + label + + // Check whether the timeline binary packet fits in the given buffer + if (timelineLabelPacketSize > bufferSize) + { + return TimelinePacketStatus::BufferExhaustion; + } + + // Packet header word 0: + // 26:31 [6] packet_family: timeline Packet Family, value 0b000001 + // 19:25 [7] packet_class: packet class + // 16:18 [3] packet_type: packet type + // 8:15 [8] reserved: all zeros + // 0:7 [8] stream_id: stream identifier + uint32_t packetFamily = 1; + uint32_t packetClass = 0; + uint32_t packetType = 1; + uint32_t streamId = 0; + uint32_t packetHeaderWord0 = ((packetFamily & 0x0000003F) << 26) | + ((packetClass & 0x0000007F) << 19) | + ((packetType & 0x00000007) << 16) | + ((streamId & 0x00000007) << 0); + + // Packet header word 1: + // 25:31 [7] reserved: all zeros + // 24 [1] sequence_numbered: when non-zero the 4 bytes following the header is a u32 sequence number + // 0:23 [24] data_length: unsigned 24-bit integer. Length of data, in bytes. Zero is permitted + uint32_t sequenceNumbered = 0; + uint32_t dataLength = boost::numeric_cast<uint32_t>(timelineLabelPacketDataLength); // Profiling GUID + label + uint32_t packetHeaderWord1 = ((sequenceNumbered & 0x00000001) << 24) | + ((dataLength & 0x00FFFFFF) << 0); + + // Initialize the offset for writing in the buffer + unsigned int offset = 0; + + // Write the timeline binary packet header to the buffer + WriteUint32(buffer, offset, packetHeaderWord0); + offset += uint32_t_size; + WriteUint32(buffer, offset, packetHeaderWord1); + offset += uint32_t_size; + + // Write the timeline binary packet payload to the buffer + WriteUint64(buffer, offset, profilingGuid); // Profiling GUID + offset += uint64_t_size; + for (uint32_t swTraceLabelWord : swTraceLabel) + { + WriteUint32(buffer, offset, swTraceLabelWord); // Label + offset += uint32_t_size; + } + + // Update the number of bytes written + numberOfBytesWritten = timelineLabelPacketSize; + + return TimelinePacketStatus::Ok; +} + } // namespace profiling } // namespace armnn |