void GrResourceCache::printStats() {
int locked = 0;
int scratch = 0;
EntryList::Iter iter;
GrResourceCacheEntry* entry = iter.init(fList, EntryList::Iter::kTail_IterStart);
for ( ; entry; entry = iter.prev()) {
if (!entry->fResource->isPurgable()) {
++locked;
}
if (entry->fResource->cacheAccess().isScratch()) {
++scratch;
}
}
float countUtilization = (100.f * fEntryCount) / fMaxCount;
float byteUtilization = (100.f * fEntryBytes) / fMaxBytes;
SkDebugf("Budget: %d items %d bytes\n", fMaxCount, fMaxBytes);
SkDebugf("\t\tEntry Count: current %d (%d locked, %d scratch %.2g%% full), high %d\n",
fEntryCount, locked, scratch, countUtilization, fHighWaterEntryCount);
SkDebugf("\t\tEntry Bytes: current %d (%.2g%% full) high %d\n",
fEntryBytes, byteUtilization, fHighWaterEntryBytes);
}
/**
* Destroying a resource may potentially trigger the unlock of additional
* resources which in turn will trigger a nested purge. We block the nested
* purge using the fPurging variable. However, the initial purge will keep
* looping until either all resources in the cache are unlocked or we've met
* the budget. There is an assertion in createAndLock to check against a
* resource's destructor inserting new resources into the cache. If these
* new resources were unlocked before purgeAsNeeded completed it could
* potentially make purgeAsNeeded loop infinitely.
*/
void GrResourceCache::purgeAsNeeded() {
if (!fPurging) {
fPurging = true;
bool withinBudget = false;
bool changed = false;
// The purging process is repeated several times since one pass
// may free up other resources
do {
EntryList::Iter iter;
changed = false;
// Note: the following code relies on the fact that the
// doubly linked list doesn't invalidate its data/pointers
// outside of the specific area where a deletion occurs (e.g.,
// in internalDetach)
GrResourceEntry* entry = iter.init(fList, EntryList::Iter::kTail_IterStart);
while (NULL != entry) {
GrAutoResourceCacheValidate atcv(this);
if (fEntryCount <= fMaxCount && fEntryBytes <= fMaxBytes) {
withinBudget = true;
break;
}
GrResourceEntry* prev = iter.prev();
if (1 == entry->fResource->getRefCnt()) {
changed = true;
// remove from our cache
fCache.remove(entry->key(), entry);
// remove from our llist
this->internalDetach(entry);
#if GR_DUMP_TEXTURE_UPLOAD
GrPrintf("--- ~resource from cache %p [%d %d]\n",
entry->resource(),
entry->resource()->width(),
entry->resource()->height());
#endif
delete entry;
}
entry = prev;
}
} while (!withinBudget && changed);
fPurging = false;
}
}
size_t GrResourceCache::countBytes(const EntryList& list) {
size_t bytes = 0;
EntryList::Iter iter;
const GrResourceEntry* entry = iter.init(const_cast<EntryList&>(list),
EntryList::Iter::kTail_IterStart);
for ( ; NULL != entry; entry = iter.prev()) {
bytes += entry->resource()->sizeInBytes();
}
return bytes;
}
void GrResourceCache::validate() const {
fList.validate();
fExclusiveList.validate();
GrAssert(both_zero_or_nonzero(fEntryCount, fEntryBytes));
GrAssert(both_zero_or_nonzero(fClientDetachedCount, fClientDetachedBytes));
GrAssert(fClientDetachedBytes <= fEntryBytes);
GrAssert(fClientDetachedCount <= fEntryCount);
GrAssert((fEntryCount - fClientDetachedCount) == fCache.count());
fCache.validate();
EntryList::Iter iter;
// check that the exclusively held entries are okay
const GrResourceEntry* entry = iter.init(const_cast<EntryList&>(fExclusiveList),
EntryList::Iter::kHead_IterStart);
for ( ; NULL != entry; entry = iter.next()) {
entry->validate();
}
// check that the shareable entries are okay
entry = iter.init(const_cast<EntryList&>(fList), EntryList::Iter::kHead_IterStart);
int count = 0;
for ( ; NULL != entry; entry = iter.next()) {
entry->validate();
GrAssert(fCache.find(entry->key()));
count += 1;
}
GrAssert(count == fEntryCount - fClientDetachedCount);
size_t bytes = countBytes(fList);
GrAssert(bytes == fEntryBytes - fClientDetachedBytes);
bytes = countBytes(fExclusiveList);
GrAssert(bytes == fClientDetachedBytes);
GrAssert(fList.countEntries() == fEntryCount - fClientDetachedCount);
GrAssert(fExclusiveList.countEntries() == fClientDetachedCount);
}
void GrResourceCache::validate() const {
fList.validate();
SkASSERT(both_zero_or_nonzero(fEntryCount, fEntryBytes));
EntryList::Iter iter;
// check that the shareable entries are okay
const GrResourceCacheEntry* entry = iter.init(const_cast<EntryList&>(fList),
EntryList::Iter::kHead_IterStart);
int count = 0;
for ( ; entry; entry = iter.next()) {
entry->validate();
count += 1;
}
SkASSERT(count == fEntryCount);
size_t bytes = this->countBytes(fList);
SkASSERT(bytes == fEntryBytes);
SkASSERT(fList.countEntries() == fEntryCount);
}
void GrResourceCache::printStats() {
int locked = 0;
EntryList::Iter iter;
GrResourceEntry* entry = iter.init(fList, EntryList::Iter::kTail_IterStart);
for ( ; NULL != entry; entry = iter.prev()) {
if (entry->fResource->getRefCnt() > 1) {
++locked;
}
}
SkDebugf("Budget: %d items %d bytes\n", fMaxCount, fMaxBytes);
SkDebugf("\t\tEntry Count: current %d (%d locked) high %d\n",
fEntryCount, locked, fHighWaterEntryCount);
SkDebugf("\t\tEntry Bytes: current %d high %d\n",
fEntryBytes, fHighWaterEntryBytes);
SkDebugf("\t\tDetached Entry Count: current %d high %d\n",
fClientDetachedCount, fHighWaterClientDetachedCount);
SkDebugf("\t\tDetached Bytes: current %d high %d\n",
fClientDetachedBytes, fHighWaterClientDetachedBytes);
}
void GrResourceCache::internalPurge(int extraCount, size_t extraBytes) {
SkASSERT(fPurging);
bool withinBudget = false;
bool changed = false;
// The purging process is repeated several times since one pass
// may free up other resources
do {
EntryList::Iter iter;
changed = false;
// Note: the following code relies on the fact that the
// doubly linked list doesn't invalidate its data/pointers
// outside of the specific area where a deletion occurs (e.g.,
// in internalDetach)
GrResourceCacheEntry* entry = iter.init(fList, EntryList::Iter::kTail_IterStart);
while (entry) {
GrAutoResourceCacheValidate atcv(this);
if ((fEntryCount+extraCount) <= fMaxCount &&
(fEntryBytes+extraBytes) <= fMaxBytes) {
withinBudget = true;
break;
}
GrResourceCacheEntry* prev = iter.prev();
if (entry->fResource->isPurgable()) {
changed = true;
this->deleteResource(entry);
}
entry = prev;
}
} while (!withinBudget && changed);
}