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Use stream compression.

Browse Source 
Previously each data packet was compressed independently. After this
change all new packets reference the previously sent data, which
achieves better compression.
This commit is contained in:
Bartosz Taudul
2017-09-17 13:10:42 +02:00
parent 4c2bd7d9df
commit d7914439e9
4 changed files with 39 additions and 9 deletions
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client/TracyProfiler.cpp
+17 -6
View File
@@ -8,7 +8,6 @@
#include <memory>
#include <limits>
#include "../common/tracy_lz4.hpp"
#include "../common/TracyProtocol.hpp"
#include "../common/TracySocket.hpp"
#include "../common/TracySystem.hpp"
@@ -31,6 +30,9 @@ Profiler::Profiler()
: m_timeBegin( GetTime() )
, m_shutdown( false )
, m_id( 0 )
, m_stream( LZ4_createStream() )
, m_buffer( new char[TargetFrameSize*3] )
, m_bufferOffset( 0 )
{
assert( PointerCheckA == PointerCheckB );
assert( !s_instance );
@@ -45,9 +47,11 @@ Profiler::~Profiler()
m_shutdown.store( true, std::memory_order_relaxed );
m_thread.join();
delete[] m_buffer;
LZ4_freeStream( m_stream );
assert( s_instance );
s_instance = nullptr;
}
uint64_t Profiler::GetNewId()
@@ -125,6 +129,8 @@ void Profiler::Worker()
m_sock->Send( &val, 1 );
#endif
LZ4_resetStream( m_stream );
for(;;)
{
if( m_shutdown.load( std::memory_order_relaxed ) ) return;
@@ -133,8 +139,8 @@ void Profiler::Worker()
const auto sz = m_queue.try_dequeue_bulk( token, item, BulkSize );
if( sz > 0 )
{
char buf[TargetFrameSize];
char* ptr = buf;
auto buf = m_buffer + m_bufferOffset;
auto ptr = buf;
for( int i=0; i<sz; i++ )
{
const auto dsz = QueueDataSize[item[i].hdr.idx];
@@ -142,6 +148,8 @@ void Profiler::Worker()
ptr += dsz;
}
if( !SendData( buf, ptr - buf ) ) break;
m_bufferOffset += ptr - buf;
if( m_bufferOffset > TargetFrameSize * 2 ) m_bufferOffset = 0;
}
else
{
@@ -164,7 +172,7 @@ bool Profiler::SendData( const char* data, size_t len )
if( m_sock->Send( data, len ) == -1 ) return false;
#else
char lz4[LZ4Size + sizeof( lz4sz_t )];
const lz4sz_t lz4sz = LZ4_compress_default( data, lz4 + sizeof( lz4sz_t ), len, LZ4Size );
const lz4sz_t lz4sz = LZ4_compress_fast_continue( m_stream, data, lz4 + sizeof( lz4sz_t ), len, LZ4Size, 1 );
memcpy( lz4, &lz4sz, sizeof( lz4sz ) );
if( m_sock->Send( lz4, lz4sz + sizeof( lz4sz_t ) ) == -1 ) return false;
#endif
@@ -179,7 +187,7 @@ bool Profiler::SendString( uint64_t str )
hdr.type = QueueType::StringData;
hdr.id = str;
char buf[TargetFrameSize];
auto buf = m_buffer + m_bufferOffset;
memcpy( buf, &hdr, sizeof( hdr ) );
auto len = strlen( ptr );
@@ -189,6 +197,9 @@ bool Profiler::SendString( uint64_t str )
memcpy( buf + sizeof( hdr ), &l16, sizeof( l16 ) );
memcpy( buf + sizeof( hdr ) + sizeof( l16 ), ptr, l16 );
m_bufferOffset += sizeof( hdr ) + sizeof( l16 ) + l16;
if( m_bufferOffset > TargetFrameSize * 2 ) m_bufferOffset = 0;
return SendData( buf, sizeof( hdr ) + sizeof( l16 ) + l16 );
}