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Compress saved traces using LZ4.

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This commit is contained in:
Bartosz Taudul 2017-09-30 19:25:24 +02:00
parent 616f501a97
commit a8b41faaf4
2 changed files with 42 additions and 12 deletions
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21
server/TracyFileRead.hpp
View File

@ -4,6 +4,8 @@
#include <algorithm> #include <algorithm>
#include <stdio.h> #include <stdio.h>
#include "../common/tracy_lz4.hpp"
namespace tracy namespace tracy
{ {
@ -19,6 +21,7 @@ public:
~FileRead() ~FileRead()
{ {
fclose( m_file ); fclose( m_file );
LZ4_freeStreamDecode( m_stream );
} }
void Read( void* ptr, size_t size ) void Read( void* ptr, size_t size )
@ -28,12 +31,17 @@ public:
{ {
if( m_offset == BufSize ) if( m_offset == BufSize )
{ {
fread( m_buf, 1, BufSize, m_file ); m_active = 1 - m_active;
m_offset = 0; m_offset = 0;
uint32_t sz;
fread( &sz, 1, sizeof( sz ), m_file );
char lz4[LZ4Size];
fread( lz4, 1, sz, m_file );
LZ4_decompress_safe_continue( m_stream, lz4, m_buf[m_active], sz, BufSize );
} }
const auto sz = std::min( size, BufSize - m_offset ); const auto sz = std::min( size, BufSize - m_offset );
memcpy( dst, m_buf + m_offset, sz ); memcpy( dst, m_buf[m_active] + m_offset, sz );
m_offset += sz; m_offset += sz;
dst += sz; dst += sz;
size -= sz; size -= sz;
@ -42,15 +50,20 @@ public:
private: private:
FileRead( FILE* f ) FileRead( FILE* f )
: m_file( f ) : m_stream( LZ4_createStreamDecode() )
, m_file( f )
, m_offset( BufSize ) , m_offset( BufSize )
, m_active( 1 )
{} {}
enum { BufSize = 64 * 1024 }; enum { BufSize = 64 * 1024 };
enum { LZ4Size = LZ4_COMPRESSBOUND( BufSize ) };
LZ4_streamDecode_t* m_stream;
FILE* m_file; FILE* m_file;
char m_buf[BufSize]; char m_buf[2][BufSize];
size_t m_offset; size_t m_offset;
uint8_t m_active;
}; };
} }

33
server/TracyFileWrite.hpp
View File

@ -4,6 +4,8 @@
#include <algorithm> #include <algorithm>
#include <stdio.h> #include <stdio.h>
#include "../common/tracy_lz4.hpp"
namespace tracy namespace tracy
{ {
@ -20,16 +22,17 @@ public:
{ {
if( m_offset > 0 ) if( m_offset > 0 )
{ {
fwrite( m_buf, 1, m_offset, m_file ); WriteLz4Block();
} }
fclose( m_file ); fclose( m_file );
LZ4_freeStream( m_stream );
} }
void Write( const void* ptr, size_t size ) void Write( const void* ptr, size_t size )
{ {
if( m_offset + size <= BufSize ) if( m_offset + size <= BufSize )
{ {
memcpy( m_buf + m_offset, ptr, size ); memcpy( m_buf[m_active] + m_offset, ptr, size );
m_offset += size; m_offset += size;
} }
else else
@ -38,15 +41,14 @@ public:
while( size > 0 ) while( size > 0 )
{ {
const auto sz = std::min( size, BufSize - m_offset ); const auto sz = std::min( size, BufSize - m_offset );
memcpy( m_buf + m_offset, src, sz ); memcpy( m_buf[m_active] + m_offset, src, sz );
m_offset += sz; m_offset += sz;
src += sz; src += sz;
size -= sz; size -= sz;
if( m_offset == BufSize ) if( m_offset == BufSize )
{ {
fwrite( m_buf, 1, BufSize, m_file ); WriteLz4Block();
m_offset = 0;
} }
} }
} }
@ -54,15 +56,30 @@ public:
private: private:
FileWrite( FILE* f ) FileWrite( FILE* f )
: m_file( f ) : m_stream( LZ4_createStream() )
, m_file( f )
, m_offset( 0 ) , m_offset( 0 )
, m_active( 0 )
{} {}
enum { BufSize = 64 * 1024 }; void WriteLz4Block()
{
char lz4[LZ4Size];
const uint32_t sz = LZ4_compress_fast_continue( m_stream, m_buf[m_active], lz4, m_offset, LZ4Size, 1 );
fwrite( &sz, 1, sizeof( sz ), m_file );
fwrite( lz4, 1, sz, m_file );
m_offset = 0;
m_active = 1 - m_active;
}
enum { BufSize = 64 * 1024 };
enum { LZ4Size = LZ4_COMPRESSBOUND( BufSize ) };
LZ4_stream_t* m_stream;
FILE* m_file; FILE* m_file;
char m_buf[BufSize]; char m_buf[2][BufSize];
size_t m_offset; size_t m_offset;
uint8_t m_active;
}; };
} }