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Move Linux calltrace processing to a separate function.

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Bartosz Taudul 2021-12-21 13:58:43 +01:00
parent 4a89a30556
commit 0c041795b6
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GPG Key ID: B7FE2008B7575DF3
1 changed files with 38 additions and 32 deletions
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70
client/TracySysTrace.cpp
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@ -1101,6 +1101,43 @@ void SysTraceStop()
traceActive.store( false, std::memory_order_relaxed ); traceActive.store( false, std::memory_order_relaxed );
} }
static uint64_t* GetCallstackBlock( uint64_t cnt, RingBuffer<RingBufSize>& ring, uint64_t offset )
{
auto trace = (uint64_t*)tracy_malloc_fast( ( 1 + cnt ) * sizeof( uint64_t ) );
ring.Read( trace+1, offset, sizeof( uint64_t ) * cnt );
#if defined __x86_64__ || defined _M_X64
// remove non-canonical pointers
do
{
const auto test = (int64_t)trace[cnt];
const auto m1 = test >> 63;
const auto m2 = test >> 47;
if( m1 == m2 ) break;
}
while( --cnt > 0 );
for( uint64_t j=1; j<cnt; j++ )
{
const auto test = (int64_t)trace[j];
const auto m1 = test >> 63;
const auto m2 = test >> 47;
if( m1 != m2 ) trace[j] = 0;
}
#endif
for( uint64_t j=1; j<=cnt; j++ )
{
if( trace[j] >= (uint64_t)-4095 ) // PERF_CONTEXT_MAX
{
memmove( trace+j, trace+j+1, sizeof( uint64_t ) * ( cnt - j ) );
cnt--;
}
}
memcpy( trace, &cnt, sizeof( uint64_t ) );
return trace;
}
void SysTraceWorker( void* ptr ) void SysTraceWorker( void* ptr )
{ {
ThreadExitHandler threadExitHandler; ThreadExitHandler threadExitHandler;
@ -1158,38 +1195,7 @@ void SysTraceWorker( void* ptr )
#if defined TRACY_HW_TIMER && ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 ) #if defined TRACY_HW_TIMER && ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
t0 = ring.ConvertTimeToTsc( t0 ); t0 = ring.ConvertTimeToTsc( t0 );
#endif #endif
auto trace = (uint64_t*)tracy_malloc_fast( ( 1 + cnt ) * sizeof( uint64_t ) ); auto trace = GetCallstackBlock( cnt, ring, offset );
ring.Read( trace+1, offset, sizeof( uint64_t ) * cnt );
#if defined __x86_64__ || defined _M_X64
// remove non-canonical pointers
do
{
const auto test = (int64_t)trace[cnt];
const auto m1 = test >> 63;
const auto m2 = test >> 47;
if( m1 == m2 ) break;
}
while( --cnt > 0 );
for( uint64_t j=1; j<cnt; j++ )
{
const auto test = (int64_t)trace[j];
const auto m1 = test >> 63;
const auto m2 = test >> 47;
if( m1 != m2 ) trace[j] = 0;
}
#endif
for( uint64_t j=1; j<=cnt; j++ )
{
if( trace[j] >= (uint64_t)-4095 ) // PERF_CONTEXT_MAX
{
memmove( trace+j, trace+j+1, sizeof( uint64_t ) * ( cnt - j ) );
cnt--;
}
}
memcpy( trace, &cnt, sizeof( uint64_t ) );
TracyLfqPrepare( QueueType::CallstackSample ); TracyLfqPrepare( QueueType::CallstackSample );
MemWrite( &item->callstackSampleFat.time, t0 ); MemWrite( &item->callstackSampleFat.time, t0 );