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Shared lock state machine.

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This commit is contained in:
Bartosz Taudul 2017-12-10 23:30:13 +01:00
parent b07718ab9e
commit 340506406e
2 changed files with 48 additions and 13 deletions
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1
server/TracyEvent.hpp
View File

@ -112,6 +112,7 @@ struct LockEvent
uint8_t lockingThread;
Type type;
uint8_t lockCount;
uint64_t waitShared;
uint64_t waitList;
uint64_t sharedList;
};

60
server/TracyView.cpp
View File

@ -1335,6 +1335,7 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
auto& timeline = lockmap.timeline;
uint8_t lockingThread;
uint8_t lockCount;
uint64_t waitShared;
uint64_t waitList;
uint64_t sharedList;
@ -1342,6 +1343,7 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
{
lockingThread = 0;
lockCount = 0;
waitShared = 0;
waitList = 0;
sharedList = 0;
}
@ -1350,6 +1352,7 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
const auto tl = timeline[pos-1];
lockingThread = tl->lockingThread;
lockCount = tl->lockCount;
waitShared = tl->waitShared;
waitList = tl->waitList;
sharedList = tl->sharedList;
}
@ -1364,9 +1367,11 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
switch( (LockEvent::Type)tl->type )
{
case LockEvent::Type::Wait:
case LockEvent::Type::WaitShared:
waitList |= tbit;
break;
case LockEvent::Type::WaitShared:
waitShared |= tbit;
break;
case LockEvent::Type::Obtain:
assert( lockCount < std::numeric_limits<uint8_t>::max() );
assert( ( waitList & tbit ) != 0 );
@ -1379,9 +1384,9 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
lockCount--;
break;
case LockEvent::Type::ObtainShared:
assert( ( waitList & tbit ) != 0 );
assert( ( waitShared & tbit ) != 0 );
assert( ( sharedList & tbit ) == 0 );
waitList &= ~tbit;
waitShared &= ~tbit;
sharedList |= tbit;
break;
case LockEvent::Type::ReleaseShared:
@ -1392,6 +1397,7 @@ void View::UpdateLockCount( LockMap& lockmap, size_t pos )
break;
}
tl->lockingThread = lockingThread;
tl->waitShared = waitShared;
tl->waitList = waitList;
tl->sharedList = sharedList;
tl->lockCount = lockCount;
@ -2855,22 +2861,32 @@ static Vector<LockEvent*>::iterator GetNextLockEvent( const Vector<LockEvent*>::
{
if( GetThreadBit( (*next)->lockingThread ) == threadBit )
{
nextState = AreOtherWaiting( (*next)->waitList, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
nextState = ( AreOtherWaiting( (*next)->waitList, threadBit ) || AreOtherWaiting( (*next)->waitShared, threadBit ) ) ? LockState::HasBlockingLock : LockState::HasLock;
break;
}
else if( IsThreadWaiting( (*next)->waitList, threadBit ) )
else if( IsThreadWaiting( (*next)->waitList, threadBit ) || IsThreadWaiting( (*next)->waitShared, threadBit ) )
{
nextState = LockState::WaitLock;
break;
}
}
else if( IsThreadWaiting( (*next)->sharedList, threadBit ) )
{
nextState = ( (*next)->waitList != 0 ) ? LockState::HasBlockingLock : LockState::HasLock;
break;
}
else if( (*next)->sharedList != 0 && IsThreadWaiting( (*next)->waitList, threadBit ) )
{
nextState = LockState::WaitLock;
break;
}
next++;
}
break;
case LockState::HasLock:
while( next < end )
{
if( (*next)->lockCount == 0 )
if( (*next)->lockCount == 0 && !IsThreadWaiting( (*next)->sharedList, threadBit ) )
{
nextState = LockState::Nothing;
break;
@ -2883,7 +2899,12 @@ static Vector<LockEvent*>::iterator GetNextLockEvent( const Vector<LockEvent*>::
}
break;
}
if( (*next)->waitList != (*it)->waitList || (*next)->lockCount != (*it)->lockCount )
else if( !IsThreadWaiting( (*next)->sharedList, threadBit ) && (*next)->waitShared != 0 )
{
nextState = LockState::HasBlockingLock;
break;
}
if( (*next)->waitList != (*it)->waitList || (*next)->waitShared != (*it)->waitShared || (*next)->lockCount != (*it)->lockCount || (*next)->sharedList != (*it)->sharedList )
{
break;
}
@ -2893,12 +2914,12 @@ static Vector<LockEvent*>::iterator GetNextLockEvent( const Vector<LockEvent*>::
case LockState::HasBlockingLock:
while( next < end )
{
if( (*next)->lockCount == 0 )
if( (*next)->lockCount == 0 && !IsThreadWaiting( (*next)->sharedList, threadBit ) )
{
nextState = LockState::Nothing;
break;
}
if( (*next)->waitList != (*it)->waitList || (*next)->lockCount != (*it)->lockCount )
if( (*next)->waitList != (*it)->waitList || (*next)->waitShared != (*it)->waitShared || (*next)->lockCount != (*it)->lockCount || (*next)->sharedList != (*it)->sharedList )
{
break;
}
@ -2910,14 +2931,19 @@ static Vector<LockEvent*>::iterator GetNextLockEvent( const Vector<LockEvent*>::
{
if( GetThreadBit( (*next)->lockingThread ) == threadBit )
{
nextState = AreOtherWaiting( (*next)->waitList, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
nextState = ( AreOtherWaiting( (*next)->waitList, threadBit ) || AreOtherWaiting( (*next)->waitShared, threadBit ) ) ? LockState::HasBlockingLock : LockState::HasLock;
break;
}
if( IsThreadWaiting( (*next)->sharedList, threadBit ) )
{
nextState = ( (*next)->waitList != 0 ) ? LockState::HasBlockingLock : LockState::HasLock;
break;
}
if( (*next)->lockingThread != (*it)->lockingThread )
{
break;
}
if( (*next)->lockCount == 0 )
if( (*next)->lockCount == 0 && !IsThreadWaiting( (*next)->waitShared, threadBit ) )
{
break;
}
@ -2976,13 +3002,21 @@ int View::DrawLocks( uint64_t tid, bool hover, double pxns, const ImVec2& wpos,
{
if( (*vbegin)->lockingThread == thread )
{
state = AreOtherWaiting( (*vbegin)->waitList, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
state = ( AreOtherWaiting( (*vbegin)->waitList, threadBit ) || AreOtherWaiting( (*vbegin)->waitShared, threadBit ) ) ? LockState::HasBlockingLock : LockState::HasLock;
}
else if( IsThreadWaiting( (*vbegin)->waitList, threadBit ) )
else if( IsThreadWaiting( (*vbegin)->waitList, threadBit ) || IsThreadWaiting( (*vbegin)->waitShared, threadBit ) )
{
state = LockState::WaitLock;
}
}
else if( IsThreadWaiting( (*vbegin)->sharedList, threadBit ) )
{
state = (*vbegin)->waitList != 0 ? LockState::HasBlockingLock : LockState::HasLock;
}
else if( (*vbegin)->sharedList != 0 && IsThreadWaiting( (*vbegin)->waitList, threadBit ) )
{
state = LockState::WaitLock;
}
double pxend = 0;
for(;;)