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Search for string matches with 8-byte blocks.

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This commit is contained in:
Bartosz Taudul 2021-06-03 13:10:26 +02:00
parent f8bb24ed36
commit 348582d6e4
No known key found for this signature in database
GPG Key ID: B7FE2008B7575DF3
1 changed files with 29 additions and 4 deletions
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33
client/TracySysTrace.cpp
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@ -1350,6 +1350,31 @@ static inline void AdvanceToNot( const char*& line, char match )
}
}
template<int S>
static inline void AdvanceTo( const char*& line, const char* match )
{
auto first = uint8_t( match[0] );
auto ptr = line;
for(;;)
{
uint64_t l;
memcpy( &l, ptr, 8 );
for( int i=0; i<8; i++ )
{
if( ( l & 0xFF ) == first )
{
if( memcmp( ptr + i, match, S ) == 0 )
{
line = ptr + i;
return;
}
}
l >>= 8;
}
ptr += 8;
}
}
static void HandleTraceLine( const char* line )
{
line += 23;
@ -1373,19 +1398,19 @@ static void HandleTraceLine( const char* line )
{
line += 14;
while( memcmp( line, "prev_pid", 8 ) != 0 ) line++;
AdvanceTo<8>( line, "prev_pid" );
line += 9;
const auto oldPid = ReadNumber( line );
line++;
while( memcmp( line, "prev_state", 10 ) != 0 ) line++;
AdvanceTo<10>( line, "prev_state" );
line += 11;
const auto oldState = (uint8_t)ReadState( *line );
line += 5;
while( memcmp( line, "next_pid", 8 ) != 0 ) line++;
AdvanceTo<8>( line, "next_pid" );
line += 9;
const auto newPid = ReadNumber( line );
@ -1405,7 +1430,7 @@ static void HandleTraceLine( const char* line )
{
line += 14;
while( memcmp( line, "pid=", 4 ) != 0 ) line++;
AdvanceTo<4>( line, "pid=" );
line += 4;
const auto pid = ReadNumber( line );