int CodeCache::cache( const AssemblyKeyBase& keyBase,
const sp<Assembly>& assembly)
{
pthread_mutex_lock(&mLock);
const ssize_t assemblySize = assembly->size();
while (mCacheInUse + assemblySize > mCacheSize) {
// evict the LRU
size_t lru = 0;
size_t count = mCacheData.size();
for (size_t i=0 ; i<count ; i++) {
const cache_entry_t& e = mCacheData.valueAt(i);
if (e.when < mCacheData.valueAt(lru).when) {
lru = i;
}
}
const cache_entry_t& e = mCacheData.valueAt(lru);
mCacheInUse -= e.entry->size();
mCacheData.removeItemsAt(lru);
}
ssize_t err = mCacheData.add(key_t(keyBase), cache_entry_t(assembly, mWhen));
if (err >= 0) {
mCacheInUse += assemblySize;
mWhen++;
// synchronize caches...
char* base = reinterpret_cast<char*>(assembly->base());
char* curr = reinterpret_cast<char*>(base + assembly->size());
__builtin___clear_cache(base, curr);
}
pthread_mutex_unlock(&mLock);
return err;
}
void
MetaDataStore::maybe_add_to_cache_(const FrontendPath& p,
DirectoryEntryPtr& dentry)
{
LOG_TRACE(p << ", object id " << dentry->object_id());
if (use_cache_ == UseCache::T and
dentry->type() == DirectoryEntry::Type::Volume)
{
LOG_TRACE(p);
WLOCK_CACHE();
/* Should insert_or_modify perform much better here?
* For at least a small number of entries (<2048)
* */
bimap_cache_.left.erase(p);
bimap_cache_.insert(cache_entry_t(p, dentry->object_id(), dentry));
}
}
int CodeCache::cache( const AssemblyKeyBase& keyBase,
const sp<Assembly>& assembly)
{
pthread_mutex_lock(&mLock);
const ssize_t assemblySize = assembly->size();
while (mCacheInUse + assemblySize > mCacheSize) {
// evict the LRU
size_t lru = 0;
size_t count = mCacheData.size();
for (size_t i=0 ; i<count ; i++) {
const cache_entry_t& e = mCacheData.valueAt(i);
if (e.when < mCacheData.valueAt(lru).when) {
lru = i;
}
}
const cache_entry_t& e = mCacheData.valueAt(lru);
mCacheInUse -= e.entry->size();
mCacheData.removeItemsAt(lru);
}
ssize_t err = mCacheData.add(key_t(keyBase), cache_entry_t(assembly, mWhen));
if (err >= 0) {
mCacheInUse += assemblySize;
mWhen++;
// synchronize caches...
#if defined(__arm__)
const long base = long(assembly->base());
const long curr = base + long(assembly->size());
err = cacheflush(base, curr, 0);
LOGE_IF(err, "__ARM_NR_cacheflush error %s\n",
strerror(errno));
#endif
}
pthread_mutex_unlock(&mLock);
return err;
}