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optimize resizing and allocating packet send buffer;

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This commit is contained in:
Alice Ogeda 2023-02-14 10:24:35 -03:00
parent f6acb8540d
commit ae605d5b0d
2 changed files with 24 additions and 15 deletions
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17
src/common/Network/GamePacket.h
View file

@ -99,6 +99,7 @@ namespace Sapphire::Network::Packets
/** The segment header */
FFXIVARR_PACKET_SEGMENT_HEADER m_segHdr;
uint16_t m_segmentType;
std::size_t m_alignedSize;
public:
virtual size_t getContentSize()
@ -128,6 +129,15 @@ namespace Sapphire::Network::Packets
return m_segHdr.size;
}
/**
* @brief gets aligned packet size
* @return packet size in bytes, to 8 byte %
*/
std::size_t getAlignedSize() const
{
return m_alignedSize;
}
/**
* @brief sets current packet size
* @param packet size in bytes
@ -182,6 +192,8 @@ namespace Sapphire::Network::Packets
// The size must be the sum of the segment header and the content
m_segHdr.size = static_cast< uint32_t >( sizeof( FFXIVARR_PACKET_SEGMENT_HEADER ) + getContentSize() );
m_segHdr.type = getSegmentType();
m_alignedSize = m_segHdr.size + ( m_segHdr.size % 8 );
}
};
@ -213,6 +225,8 @@ namespace Sapphire::Network::Packets
memset( &m_ipcHdr, 0, ipcHdrSize );
m_ipcHdr.type = static_cast< WorldPackets::Server::ServerZoneIpcType >( m_data._ServerIpcType );
m_alignedSize = m_segHdr.size + ( m_segHdr.size % 8 );
}
size_t getContentSize() override
@ -271,6 +285,7 @@ namespace Sapphire::Network::Packets
m_ipcHdr.type = static_cast< WorldPackets::Server::ServerZoneIpcType >( m_data._ServerIpcType );
m_ipcHdr.timestamp = Common::Util::getTimeSeconds();
m_segHdr.size = sizeof( T ) + sizeof( FFXIVARR_IPC_HEADER ) + sizeof( FFXIVARR_PACKET_SEGMENT_HEADER );
m_alignedSize = m_segHdr.size + ( m_segHdr.size % 8 );
};
protected:
@ -291,6 +306,7 @@ namespace Sapphire::Network::Packets
{
initialize();
m_segHdr.size = size;
m_alignedSize = m_segHdr.size + ( m_segHdr.size % 8 );
};
FFXIVRawPacket( char* data, uint16_t size ) :
@ -300,6 +316,7 @@ namespace Sapphire::Network::Packets
memcpy( &m_data[ 0 ], data + segmentHdrSize, size - segmentHdrSize );
memcpy( &m_segHdr, data, segmentHdrSize );
m_alignedSize = m_segHdr.size + ( m_segHdr.size % 8 );
}
size_t getContentSize() override

22
src/common/Network/PacketContainer.cpp
View file

@ -26,13 +26,13 @@ void Network::Packets::PacketContainer::addPacket( Network::Packets::FFXIVPacket
{
m_entryList.push_back( entry );
m_ipcHdr.size += static_cast< uint32_t >( entry->getSize() );
m_ipcHdr.size += static_cast< uint32_t >( entry->getAlignedSize() );
m_ipcHdr.count++;
}
void Network::Packets::PacketContainer::fillSendBuffer( std::vector< uint8_t >& sendBuffer )
{
std::vector< uint8_t > tempBuffer( m_ipcHdr.size );
std::vector< uint8_t > tempBuffer( m_ipcHdr.size, 0 );
memset( &tempBuffer[ 0 ], 0, m_ipcHdr.size );
using namespace std::chrono;
@ -55,24 +55,16 @@ void Network::Packets::PacketContainer::fillSendBuffer( std::vector< uint8_t >&
pPacket->setTargetActor( m_segmentTargetOverride );
}
auto validPacketDataSize = pPacket->getSize();
auto packetAlignedSize = pPacket->getAlignedSize();
auto packetOriginalSize = pPacket->getSize();
// check if packet is 8 byte aligned
auto alignCheck = validPacketDataSize % 8;
if( alignCheck != 0 )
{
// pad packet to boundary
// resize is expensive
tempBuffer.resize( tempBuffer.size() + alignCheck, 0 );
pPacket->setSize( validPacketDataSize + alignCheck );
}
pPacket->setSize( packetAlignedSize );
// copy packet data into buffer
auto data = pPacket->getData();
memcpy( &tempBuffer[ 0 ] + sizeof( FFXIVARR_PACKET_HEADER ) + offset, &data[ 0 ], validPacketDataSize );
memcpy( &tempBuffer[ 0 ] + sizeof( FFXIVARR_PACKET_HEADER ) + offset, &data[ 0 ], packetOriginalSize );
offset += validPacketDataSize + alignCheck;
offset += packetAlignedSize;
}
// buffer has possibly been resized for alignment