EXPORT void _lib_unlock( W lockno )
{
MUnlock(&LibLock, lockno);
}
void CGBLGuard::Switch(EState newstate)
{
if(newstate==m_current) return;
switch(newstate) {
case eNone:
if ( m_current!=eMain ) {
Switch(eMain);
}
_ASSERT(m_current==eMain);
//LOCK_POST(8, &m_Locks << ":: switch 'main' to 'none'");
MUnlock();
m_current=eNone;
return;
case eBoth:
if ( m_current!=eMain ) {
Switch(eMain);
}
_ASSERT(m_current==eMain);
//LOCK_POST(9, &m_Locks << ":: switch 'main' to 'both'");
if ( m_Locks->m_SlowTraverseMode>0 ) {
PLock();
}
m_current=eBoth;
return;
case eLocal:
if ( m_current!=eBoth ) {
Switch(eBoth);
}
_ASSERT(m_current==eBoth);
//LOCK_POST(10, &m_Locks << ":: switch 'both' to 'local'");
if(m_Locks->m_SlowTraverseMode==0) {
PLock();
}
try {
m_Locks->m_SlowTraverseMode++;
MUnlock();
}
catch( exception& ) {
m_Locks->m_SlowTraverseMode--;
if(m_Locks->m_SlowTraverseMode==0) {
PUnlock();
}
throw;
}
m_current=eLocal;
return;
case eMain:
switch(m_current) {
case eNone:
m_select=-1;
//LOCK_POST(11, &m_Locks << ":: switch 'none' to 'main'");
MLock();
m_current=eMain;
return;
case eBoth:
//LOCK_POST(12, &m_Locks << ":: switch 'both' to 'main'");
if(m_Locks->m_SlowTraverseMode>0) {
PUnlock();
}
m_select=-1;
m_current=eMain;
return;
case eLocal:
//LOCK_POST(13, &m_Locks << ":: switch 'local' to 'none2main'");
PUnlock();
m_current=eNoneToMain;
case eNoneToMain:
//LOCK_POST(14, &m_Locks << ":: switch 'none2main' to 'main'");
MLock();
m_Locks->m_SlowTraverseMode--;
m_select=-1;
m_current=eMain;
return;
default:
break;
}
default:
break;
}
NCBI_THROW(CLoaderException, eOtherError,
"CGBLGuard::Switch - state desynchronized");
}
