void StringData::release() noexcept {
assert(checkSane());
if (auto const sizeClass = m_hdr.smallSizeClass) {
assert(isFlat());
MM().freeSmallIndex(this, sizeClass,
MemoryManager::smallIndex2Size(sizeClass));
} else {
// We know that the string is request local. A `smallSizeClass' of 0 in
// its header indicates that the StringData is either not flat, or too big
// to fit in a small size class.
if (!isFlat()) return releaseDataSlowPath();
auto const size = capacity() + kCapOverhead;
assertx(size > kMaxSmallSize);
MM().freeBigSize(this, size);
}
}
void StringData::release() noexcept {
assert(checkSane());
if (UNLIKELY(!isFlat())) return releaseDataSlowPath();
// In CapCode encoding, we always minimize the exponent. Thus if the
// encoded value is above Threshold, the value after decoding is also
// above Threshold.
if (LIKELY(m_hdr.aux.code <= kMaxStringSimpleLen)) {
auto const size = kCapOverhead + m_hdr.aux.code;
auto const sizeClass = MemoryManager::lookupSmallSize2Index(size);
MM().freeSmallIndex(this, sizeClass, size);
return;
}
auto const size = capacity() + kCapOverhead;
if (size <= kMaxSmallSize) {
auto const sizeClass = MemoryManager::computeSmallSize2Index(size);
auto const sz = MemoryManager::smallIndex2Size(sizeClass);
MM().freeSmallIndex(this, sizeClass, sz);
return;
}
MM().freeBigSize(this, size);
}
void StringData::release() noexcept {
assert(checkSane());
if (UNLIKELY(!isFlat())) return releaseDataSlowPath();
freeForSize(this, capacity() + kCapOverhead);
}
