PassRefPtr<SimpleFontData> FontDataCache::get(const FontPlatformData* platformData, ShouldRetain shouldRetain)
{
if (!platformData)
return 0;
Cache::iterator result = m_cache.find(*platformData);
if (result == m_cache.end()) {
pair<RefPtr<SimpleFontData>, unsigned> newValue(SimpleFontData::create(*platformData), shouldRetain == Retain ? 1 : 0);
m_cache.set(*platformData, newValue);
if (shouldRetain == DoNotRetain)
m_inactiveFontData.add(newValue.first);
return newValue.first.release();
}
if (!result.get()->value.second) {
ASSERT(m_inactiveFontData.contains(result.get()->value.first));
m_inactiveFontData.remove(result.get()->value.first);
}
if (shouldRetain == Retain) {
result.get()->value.second++;
} else if (!result.get()->value.second) {
// If shouldRetain is DoNotRetain and count is 0, we want to remove the fontData from
// m_inactiveFontData (above) and re-add here to update LRU position.
m_inactiveFontData.add(result.get()->value.first);
}
return result.get()->value.first;
}
PassRefPtr<SimpleFontData> FontDataCache::get(
const FontPlatformData* platformData,
ShouldRetain shouldRetain,
bool subpixelAscentDescent) {
if (!platformData)
return nullptr;
// TODO: crbug.com/446376 - This should not happen, but we currently
// do not have a reproduction for the crash that an empty typeface()
// causes downstream from here.
if (!platformData->typeface()) {
DLOG(ERROR)
<< "Empty typeface() in FontPlatformData when accessing FontDataCache.";
return nullptr;
}
Cache::iterator result = m_cache.find(platformData);
if (result == m_cache.end()) {
std::pair<RefPtr<SimpleFontData>, unsigned> newValue(
SimpleFontData::create(*platformData, nullptr, false,
subpixelAscentDescent),
shouldRetain == Retain ? 1 : 0);
// The new SimpleFontData takes a copy of the incoming FontPlatformData
// object. The incoming key may be temporary. So, for cache storage, take
// the address of the newly created FontPlatformData that is copied an owned
// by SimpleFontData.
m_cache.set(&newValue.first->platformData(), newValue);
if (shouldRetain == DoNotRetain)
m_inactiveFontData.add(newValue.first);
return newValue.first.release();
}
if (!result.get()->value.second) {
ASSERT(m_inactiveFontData.contains(result.get()->value.first));
m_inactiveFontData.remove(result.get()->value.first);
}
if (shouldRetain == Retain) {
result.get()->value.second++;
} else if (!result.get()->value.second) {
// If shouldRetain is DoNotRetain and count is 0, we want to remove the
// fontData from m_inactiveFontData (above) and re-add here to update LRU
// position.
m_inactiveFontData.add(result.get()->value.first);
}
return result.get()->value.first;
}
PassRefPtr<SimpleFontData> FontDataCache::get(const FontPlatformData* platformData, ShouldRetain shouldRetain)
{
if (!platformData)
return nullptr;
// TODO: crbug.com/446376 - This should not happen, but we currently
// do not have a reproduction for the crash that an empty typeface()
// causes downstream from here.
if (!platformData->typeface()) {
DLOG(ERROR) << "Empty typeface() in FontPlatformData when accessing FontDataCache.";
return nullptr;
}
Cache::iterator result = m_cache.find(*platformData);
if (result == m_cache.end()) {
std::pair<RefPtr<SimpleFontData>, unsigned> newValue(SimpleFontData::create(*platformData), shouldRetain == Retain ? 1 : 0);
m_cache.set(*platformData, newValue);
if (shouldRetain == DoNotRetain)
m_inactiveFontData.add(newValue.first);
return newValue.first.release();
}
if (!result.get()->value.second) {
ASSERT(m_inactiveFontData.contains(result.get()->value.first));
m_inactiveFontData.remove(result.get()->value.first);
}
if (shouldRetain == Retain) {
result.get()->value.second++;
} else if (!result.get()->value.second) {
// If shouldRetain is DoNotRetain and count is 0, we want to remove the fontData from
// m_inactiveFontData (above) and re-add here to update LRU position.
m_inactiveFontData.add(result.get()->value.first);
}
return result.get()->value.first;
}
