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Remove non-canonical pointer at the end of sampled stack.

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This commit is contained in:
Bartosz Taudul 2020-10-02 22:14:33 +02:00
parent 07fe1266b0
commit fc1b03d67d
1 changed files with 6 additions and 0 deletions
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6
client/TracySysTrace.cpp
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@ -727,6 +727,12 @@ static void SetupSampling( int64_t& samplingPeriod )
auto trace = (uint64_t*)tracy_malloc( ( 1 + cnt ) * sizeof( uint64_t ) ); auto trace = (uint64_t*)tracy_malloc( ( 1 + cnt ) * sizeof( uint64_t ) );
s_ring[i].Read( trace+1, offset, sizeof( uint64_t ) * cnt ); s_ring[i].Read( trace+1, offset, sizeof( uint64_t ) * cnt );
// remove non-canonical pointer at the end
const auto test = (int64_t)trace[cnt];
const auto m1 = test >> 63;
const auto m2 = test >> 47;
if( m1 != m2 ) cnt--;
// skip kernel frames // skip kernel frames
uint64_t j; uint64_t j;
for( j=0; j<cnt; j++ ) for( j=0; j<cnt; j++ )