CallLinkStatus::CallLinkStatus(JSValue value)
: m_couldTakeSlowPath(false)
, m_isProved(false)
{
if (!value || !value.isCell()) {
m_couldTakeSlowPath = true;
return;
}
m_variants.append(CallVariant(value.asCell()));
}
void CallEdgeProfile::visitWeak()
{
if (!m_primaryCallee && !m_otherCallees)
return;
ConcurrentJITLocker locker(m_lock);
// See if anything is dead and if that can be rectified by despecifying.
if (worthDespecifying()) {
CallSpectrum newSpectrum;
if (!!m_primaryCallee)
newSpectrum.add(m_primaryCallee.despecifiedClosure(), m_numCallsToPrimary);
if (m_otherCallees) {
for (unsigned i = m_otherCallees->m_processed.size(); i--;) {
newSpectrum.add(
m_otherCallees->m_processed[i].callee().despecifiedClosure(),
m_otherCallees->m_processed[i].count());
}
}
Vector<CallSpectrum::KeyAndCount> list = newSpectrum.buildList();
RELEASE_ASSERT(list.size());
m_primaryCallee = list.last().key;
m_numCallsToPrimary = list.last().count;
if (m_otherCallees) {
m_otherCallees->m_processed.clear();
// We could have a situation where the GC clears the primary and then log processing
// reinstates it without ever doing an addSlow and subsequent mergeBack. In such a case
// the primary could duplicate an entry in otherCallees, which means that even though we
// had an otherCallees object, the list size is just 1.
if (list.size() >= 2) {
for (unsigned i = list.size() - 1; i--;)
m_otherCallees->m_processed.append(CallEdge(list[i].key, list[i].count));
}
}
m_closuresAreDespecified = true;
return;
}
if (!!m_primaryCallee && !Heap::isMarked(m_primaryCallee.rawCalleeCell())) {
m_numCallsToUnknownCell += m_numCallsToPrimary;
m_primaryCallee = CallVariant();
m_numCallsToPrimary = 0;
}
if (m_otherCallees) {
for (unsigned i = 0; i < m_otherCallees->m_processed.size(); i++) {
if (Heap::isMarked(m_otherCallees->m_processed[i].callee().rawCalleeCell()))
continue;
m_numCallsToUnknownCell += m_otherCallees->m_processed[i].count();
m_otherCallees->m_processed[i--] = m_otherCallees->m_processed.last();
m_otherCallees->m_processed.removeLast();
}
// Only exists while we are processing the log.
RELEASE_ASSERT(!m_otherCallees->m_temporarySpectrum);
}
}