Optimize UpdateLockCount.

This commit is contained in:
Bartosz Taudul 2017-11-19 19:35:16 +01:00
parent c1a79c0622
commit 19db1a3f1f

View File

@ -1165,15 +1165,30 @@ void View::InsertLockEvent( LockMap& lockmap, LockEvent* lev, uint64_t thread )
void View::UpdateLockCount( LockMap& lockmap, size_t pos )
{
auto& timeline = lockmap.timeline;
uint8_t lockingThread = pos == 0 ? 0 : timeline[pos-1]->lockingThread;
uint8_t lockCount = pos == 0 ? 0 : timeline[pos-1]->lockCount;
uint64_t waitList = pos == 0 ? 0 : timeline[pos-1]->waitList;
uint8_t lockingThread;
uint8_t lockCount;
uint64_t waitList;
if( pos == 0 )
{
lockingThread = 0;
lockCount = 0;
waitList = 0;
}
else
{
const auto tl = timeline[pos-1];
lockingThread = tl->lockingThread;
lockCount = tl->lockCount;
waitList = tl->waitList;
}
const auto end = timeline.size();
while( pos != end )
{
const auto tbit = uint64_t( 1 ) << timeline[pos]->thread;
switch( (LockEvent::Type)timeline[pos]->type )
const auto tl = timeline[pos];
const auto tbit = uint64_t( 1 ) << tl->thread;
switch( (LockEvent::Type)tl->type )
{
case LockEvent::Type::Wait:
waitList |= tbit;
@ -1182,7 +1197,7 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
assert( lockCount < std::numeric_limits<uint8_t>::max() );
assert( ( waitList | tbit ) != 0 );
waitList &= ~tbit;
lockingThread = timeline[pos]->thread;
lockingThread = tl->thread;
lockCount++;
break;
case LockEvent::Type::Release:
@ -1192,10 +1207,10 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
default:
break;
}
timeline[pos]->lockingThread = lockingThread;
timeline[pos]->waitList = waitList;
timeline[pos]->lockCount = lockCount;
assert( timeline[pos]->lockingThread == lockingThread );
tl->lockingThread = lockingThread;
tl->waitList = waitList;
tl->lockCount = lockCount;
assert( tl->lockingThread == lockingThread );
pos++;
}
}