/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrResourceCache.h"
#include "GrCaps.h"
#include "GrGpuResourceCacheAccess.h"
#include "GrProxyProvider.h"
#include "GrTexture.h"
#include "GrTextureProxyCacheAccess.h"
#include "GrTracing.h"
#include "SkGr.h"
#include "SkMessageBus.h"
#include "SkOpts.h"
#include "SkTSort.h"
DECLARE_SKMESSAGEBUS_MESSAGE(GrUniqueKeyInvalidatedMessage);
DECLARE_SKMESSAGEBUS_MESSAGE(GrGpuResourceFreedMessage);
//////////////////////////////////////////////////////////////////////////////
GrScratchKey::ResourceType GrScratchKey::GenerateResourceType() {
static int32_t gType = INHERITED::kInvalidDomain + 1;
int32_t type = sk_atomic_inc(&gType);
if (type > SK_MaxU16) {
SK_ABORT("Too many Resource Types");
}
return static_cast<ResourceType>(type);
}
GrUniqueKey::Domain GrUniqueKey::GenerateDomain() {
static int32_t gDomain = INHERITED::kInvalidDomain + 1;
int32_t domain = sk_atomic_inc(&gDomain);
if (domain > SK_MaxU16) {
SK_ABORT("Too many GrUniqueKey Domains");
}
return static_cast<Domain>(domain);
}
uint32_t GrResourceKeyHash(const uint32_t* data, size_t size) {
return SkOpts::hash(data, size);
}
//////////////////////////////////////////////////////////////////////////////
class GrResourceCache::AutoValidate : ::SkNoncopyable {
public:
AutoValidate(GrResourceCache* cache) : fCache(cache) { cache->validate(); }
~AutoValidate() { fCache->validate(); }
private:
GrResourceCache* fCache;
};
//////////////////////////////////////////////////////////////////////////////
GrResourceCache::GrResourceCache(const GrCaps* caps, uint32_t contextUniqueID)
: fProxyProvider(nullptr)
, fTimestamp(0)
, fMaxCount(kDefaultMaxCount)
, fMaxBytes(kDefaultMaxSize)
, fMaxUnusedFlushes(kDefaultMaxUnusedFlushes)
#if GR_CACHE_STATS
, fHighWaterCount(0)
, fHighWaterBytes(0)
, fBudgetedHighWaterCount(0)
, fBudgetedHighWaterBytes(0)
#endif
, fBytes(0)
, fBudgetedCount(0)
, fBudgetedBytes(0)
, fPurgeableBytes(0)
, fRequestFlush(false)
, fExternalFlushCnt(0)
, fContextUniqueID(contextUniqueID)
, fPreferVRAMUseOverFlushes(caps->preferVRAMUseOverFlushes()) {
SkDEBUGCODE(fCount = 0;)
SkDEBUGCODE(fNewlyPurgeableResourceForValidation = nullptr;)
}
GrResourceCache::~GrResourceCache() {
this->releaseAll();
}
void GrResourceCache::setLimits(int count, size_t bytes, int maxUnusedFlushes) {
fMaxCount = count;
fMaxBytes = bytes;
fMaxUnusedFlushes = maxUnusedFlushes;
this->purgeAsNeeded();
}
void GrResourceCache::insertResource(GrGpuResource* resource) {
SkASSERT(resource);
SkASSERT(!this->isInCache(resource));
SkASSERT(!resource->wasDestroyed());
SkASSERT(!resource->isPurgeable());
// We must set the timestamp before adding to the array in case the timestamp wraps and we wind
// up iterating over all the resources that already have timestamps.
resource->cacheAccess().setTimestamp(this->getNextTimestamp());
this->addToNonpurgeableArray(resource);
size_t size = resource->gpuMemorySize();
SkDEBUGCODE(++fCount;)
fBytes += size;
#if GR_CACHE_STATS
fHighWaterCount = SkTMax(this->getResourceCount(), fHighWaterCount);
fHighWaterBytes = SkTMax(fBytes, fHighWaterBytes);
#endif
if (SkBudgeted::kYes == resource->resourcePriv().isBudgeted()) {
++fBudgetedCount;
fBudgetedBytes += size;
TRACE_COUNTER2("skia.gpu.cache", "skia budget", "used",
fBudgetedBytes, "free", fMaxBytes - fBudgetedBytes);
#if GR_CACHE_STATS
fBudgetedHighWaterCount = SkTMax(fBudgetedCount, fBudgetedHighWaterCount);
fBudgetedHighWaterBytes = SkTMax(fBudgetedBytes, fBudgetedHighWaterBytes);
#endif
}
if (resource->resourcePriv().getScratchKey().isValid() &&
!resource->getUniqueKey().isValid()) {
SkASSERT(!resource->resourcePriv().refsWrappedObjects());
fScratchMap.insert(resource->resourcePriv().getScratchKey(), resource);
}
this->purgeAsNeeded();
}
void GrResourceCache::removeResource(GrGpuResource* resource) {
this->validate();
SkASSERT(this->isInCache(resource));
size_t size = resource->gpuMemorySize();
if (resource->isPurgeable()) {
fPurgeableQueue.remove(resource);
fPurgeableBytes -= size;
} else {
this->removeFromNonpurgeableArray(resource);
}
SkDEBUGCODE(--fCount;)
fBytes -= size;
if (SkBudgeted::kYes == resource->resourcePriv().isBudgeted()) {
--fBudgetedCount;
fBudgetedBytes -= size;
TRACE_COUNTER2("skia.gpu.cache", "skia budget", "used",
fBudgetedBytes, "free", fMaxBytes - fBudgetedBytes);
}
if (resource->resourcePriv().getScratchKey().isValid() &&
!resource->getUniqueKey().isValid()) {
fScratchMap.remove(resource->resourcePriv().getScratchKey(), resource);
}
if (resource->getUniqueKey().isValid()) {
fUniqueHash.remove(resource->getUniqueKey());
}
this->validate();
}
void GrResourceCache::abandonAll() {
AutoValidate av(this);
while (fNonpurgeableResources.count()) {
GrGpuResource* back = *(fNonpurgeableResources.end() - 1);
SkASSERT(!back->wasDestroyed());
back->cacheAccess().abandon();
}
while (fPurgeableQueue.count()) {
GrGpuResource* top = fPurgeableQueue.peek();
SkASSERT(!top->wasDestroyed());
top->cacheAccess().abandon();
}
SkASSERT(!fScratchMap.count());
SkASSERT(!fUniqueHash.count());
SkASSERT(!fCount);
SkASSERT(!this->getResourceCount());
SkASSERT(!fBytes);
SkASSERT(!fBudgetedCount);
SkASSERT(!fBudgetedBytes);
SkASSERT(!fPurgeableBytes);
}
void GrResourceCache::releaseAll() {
AutoValidate av(this);
this->processFreedGpuResources();
SkASSERT(fProxyProvider); // better have called setProxyProvider
// We must remove the uniqueKeys from the proxies here. While they possess a uniqueKey
// they also have a raw pointer back to this class (which is presumably going away)!
fProxyProvider->removeAllUniqueKeys();
while(fNonpurgeableResources.count()) {
GrGpuResource* back = *(fNonpurgeableResources.end() - 1);
SkASSERT(!back->wasDestroyed());
back->cacheAccess().release();
}
while (fPurgeableQueue.count()) {
GrGpuResource* top = fPurgeableQueue.peek();
SkASSERT(!top->wasDestroyed());
top->cacheAccess().release();
}
SkASSERT(!fScratchMap.count());
SkASSERT(!fUniqueHash.count());
SkASSERT(!fCount);
SkASSERT(!this->getResourceCount());
SkASSERT(!fBytes);
SkASSERT(!fBudgetedCount);
SkASSERT(!fBudgetedBytes);
SkASSERT(!fPurgeableBytes);
}
class GrResourceCache::AvailableForScratchUse {
public:
AvailableForScratchUse(bool rejectPendingIO) : fRejectPendingIO(rejectPendingIO) { }
bool operator()(const GrGpuResource* resource) const {
SkASSERT(!resource->getUniqueKey().isValid() &&
resource->resourcePriv().getScratchKey().isValid());
if (resource->internalHasRef() || !resource->cacheAccess().isScratch()) {
return false;
}
return !fRejectPendingIO || !resource->internalHasPendingIO();
}
private:
bool fRejectPendingIO;
};
GrGpuResource* GrResourceCache::findAndRefScratchResource(const GrScratchKey& scratchKey,
size_t resourceSize,
uint32_t flags) {
SkASSERT(scratchKey.isValid());
GrGpuResource* resource;
if (flags & (kPreferNoPendingIO_ScratchFlag | kRequireNoPendingIO_ScratchFlag)) {
resource = fScratchMap.find(scratchKey, AvailableForScratchUse(true));
if (resource) {
this->refAndMakeResourceMRU(resource);
this->validate();
return resource;
} else if (flags & kRequireNoPendingIO_ScratchFlag) {
return nullptr;
}
// We would prefer to consume more available VRAM rather than flushing
// immediately, but on ANGLE this can lead to starving of the GPU.
if (fPreferVRAMUseOverFlushes && this->wouldFit(resourceSize)) {
// kPrefer is specified, we didn't find a resource without pending io,
// but there is still space in our budget for the resource so force
// the caller to allocate a new resource.
return nullptr;
}
}
resource = fScratchMap.find(scratchKey, AvailableForScratchUse(false));
if (resource) {
this->refAndMakeResourceMRU(resource);
this->validate();
}
return resource;
}
void GrResourceCache::willRemoveScratchKey(const GrGpuResource* resource) {
SkASSERT(resource->resourcePriv().getScratchKey().isValid());
if (!resource->getUniqueKey().isValid()) {
fScratchMap.remove(resource->resourcePriv().getScratchKey(), resource);
}
}
void GrResourceCache::removeUniqueKey(GrGpuResource* resource) {
// Someone has a ref to this resource in order to have removed the key. When the ref count
// reaches zero we will get a ref cnt notification and figure out what to do with it.
if (resource->getUniqueKey().isValid()) {
SkASSERT(resource == fUniqueHash.find(resource->getUniqueKey()));
fUniqueHash.remove(resource->getUniqueKey());
}
resource->cacheAccess().removeUniqueKey();
if (resource->resourcePriv().getScratchKey().isValid()) {
fScratchMap.insert(resource->resourcePriv().getScratchKey(), resource);
}
this->validate();
}
void GrResourceCache::changeUniqueKey(GrGpuResource* resource, const GrUniqueKey& newKey) {
SkASSERT(resource);
SkASSERT(this->isInCache(resource));
// If another resource has the new key, remove its key then install the key on this resource.
if (newKey.isValid()) {
if (GrGpuResource* old = fUniqueHash.find(newKey)) {
// If the old resource using the key is purgeable and is unreachable, then remove it.
if (!old->resourcePriv().getScratchKey().isValid() && old->isPurgeable()) {
old->cacheAccess().release();
} else {
this->removeUniqueKey(old);
}
}
SkASSERT(nullptr == fUniqueHash.find(newKey));
// Remove the entry for this resource if it already has a unique key.
if (resource->getUniqueKey().isValid()) {
SkASSERT(resource == fUniqueHash.find(resource->getUniqueKey()));
fUniqueHash.remove(resource->getUniqueKey());
SkASSERT(nullptr == fUniqueHash.find(resource->getUniqueKey()));
} else {
// 'resource' didn't have a valid unique key before so it is switching sides. Remove it
// from the ScratchMap
if (resource->resourcePriv().getScratchKey().isValid()) {
fScratchMap.remove(resource->resourcePriv().getScratchKey(), resource);
}
}
resource->cacheAccess().setUniqueKey(newKey);
fUniqueHash.add(resource);
} else {
this->removeUniqueKey(resource);
}
this->validate();
}
void GrResourceCache::refAndMakeResourceMRU(GrGpuResource* resource) {
SkASSERT(resource);
SkASSERT(this->isInCache(resource));
if (resource->isPurgeable()) {
// It's about to become unpurgeable.
fPurgeableBytes -= resource->gpuMemorySize();
fPurgeableQueue.remove(resource);
this->addToNonpurgeableArray(resource);
}
resource->ref();
resource->cacheAccess().setTimestamp(this->getNextTimestamp());
this->validate();
}
void GrResourceCache::notifyCntReachedZero(GrGpuResource* resource, uint32_t flags) {
SkASSERT(resource);
SkASSERT(!resource->wasDestroyed());
SkASSERT(flags);
SkASSERT(this->isInCache(resource));
// This resource should always be in the nonpurgeable array when this function is called. It
// will be moved to the queue if it is newly purgeable.
SkASSERT(fNonpurgeableResources[*resource->cacheAccess().accessCacheIndex()] == resource);
if (SkToBool(ResourceAccess::kRefCntReachedZero_RefNotificationFlag & flags)) {
#ifdef SK_DEBUG
// When the timestamp overflows validate() is called. validate() checks that resources in
// the nonpurgeable array are indeed not purgeable. However, the movement from the array to
// the purgeable queue happens just below in this function. So we mark it as an exception.
if (resource->isPurgeable()) {
fNewlyPurgeableResourceForValidation = resource;
}
#endif
resource->cacheAccess().setTimestamp(this->getNextTimestamp());
SkDEBUGCODE(fNewlyPurgeableResourceForValidation = nullptr);
}
if (!SkToBool(ResourceAccess::kAllCntsReachedZero_RefNotificationFlag & flags)) {
SkASSERT(!resource->isPurgeable());
return;
}
SkASSERT(resource->isPurgeable());
this->removeFromNonpurgeableArray(resource);
fPurgeableQueue.insert(resource);
resource->cacheAccess().setFlushCntWhenResourceBecamePurgeable(fExternalFlushCnt);
resource->cacheAccess().setTimeWhenResourceBecomePurgeable();
fPurgeableBytes += resource->gpuMemorySize();
if (SkBudgeted::kNo == resource->resourcePriv().isBudgeted()) {
// Check whether this resource could still be used as a scratch resource.
if (!resource->resourcePriv().refsWrappedObjects() &&
resource->resourcePriv().getScratchKey().isValid()) {
// We won't purge an existing resource to make room for this one.
if (fBudgetedCount < fMaxCount &&
fBudgetedBytes + resource->gpuMemorySize() <= fMaxBytes) {
resource->resourcePriv().makeBudgeted();
return;
}
}
} else {
// Purge the resource immediately if we're over budget
// Also purge if the resource has neither a valid scratch key nor a unique key.
bool noKey = !resource->resourcePriv().getScratchKey().isValid() &&
!resource->getUniqueKey().isValid();
if (!this->overBudget() && !noKey) {
return;
}
}
SkDEBUGCODE(int beforeCount = this->getResourceCount();)
resource->cacheAccess().release();
// We should at least free this resource, perhaps dependent resources as well.
SkASSERT(this->getResourceCount() < beforeCount);
this->validate();
}
void GrResourceCache::didChangeGpuMemorySize(const GrGpuResource* resource, size_t oldSize) {
// SkASSERT(!fPurging); GrPathRange increases size during flush. :(
SkASSERT(resource);
SkASSERT(this->isInCache(resource));
ptrdiff_t delta = resource->gpuMemorySize() - oldSize;
fBytes += delta;
#if GR_CACHE_STATS
fHighWaterBytes = SkTMax(fBytes, fHighWaterBytes);
#endif
if (SkBudgeted::kYes == resource->resourcePriv().isBudgeted()) {
fBudgetedBytes += delta;
TRACE_COUNTER2("skia.gpu.cache", "skia budget", "used",
fBudgetedBytes, "free", fMaxBytes - fBudgetedBytes);
#if GR_CACHE_STATS
fBudgetedHighWaterBytes = SkTMax(fBudgetedBytes, fBudgetedHighWaterBytes);
#endif
}
this->purgeAsNeeded();
this->validate();
}
void GrResourceCache::didChangeBudgetStatus(GrGpuResource* resource) {
SkASSERT(resource);
SkASSERT(this->isInCache(resource));
size_t size = resource->gpuMemorySize();
if (SkBudgeted::kYes == resource->resourcePriv().isBudgeted()) {
++fBudgetedCount;
fBudgetedBytes += size;
#if GR_CACHE_STATS
fBudgetedHighWaterBytes = SkTMax(fBudgetedBytes, fBudgetedHighWaterBytes);
fBudgetedHighWaterCount = SkTMax(fBudgetedCount, fBudgetedHighWaterCount);
#endif
this->purgeAsNeeded();
} else {
--fBudgetedCount;
fBudgetedBytes -= size;
}
TRACE_COUNTER2("skia.gpu.cache", "skia budget", "used",
fBudgetedBytes, "free", fMaxBytes - fBudgetedBytes);
this->validate();
}
void GrResourceCache::purgeAsNeeded() {
SkTArray<GrUniqueKeyInvalidatedMessage> invalidKeyMsgs;
fInvalidUniqueKeyInbox.poll(&invalidKeyMsgs);
if (invalidKeyMsgs.count()) {
this->processInvalidUniqueKeys(invalidKeyMsgs);
}
this->processFreedGpuResources();
if (fMaxUnusedFlushes > 0) {
// We want to know how many complete flushes have occurred without the resource being used.
// If the resource was tagged when fExternalFlushCnt was N then this means it became
// purgeable during activity that became the N+1th flush. So when the flush count is N+2
// it has sat in the purgeable queue for one entire flush.
uint32_t oldestAllowedFlushCnt = fExternalFlushCnt - fMaxUnusedFlushes - 1;
// check for underflow
if (oldestAllowedFlushCnt < fExternalFlushCnt) {
while (fPurgeableQueue.count()) {
uint32_t flushWhenResourceBecamePurgeable =
fPurgeableQueue.peek()->cacheAccess().flushCntWhenResourceBecamePurgeable();
if (oldestAllowedFlushCnt < flushWhenResourceBecamePurgeable) {
// Resources were given both LRU timestamps and tagged with a flush cnt when
// they first became purgeable. The LRU timestamp won't change again until the
// resource is made non-purgeable again. So, at this point all the remaining
// resources in the timestamp-sorted queue will have a flush count >= to this
// one.
break;
}
GrGpuResource* resource = fPurgeableQueue.peek();
SkASSERT(resource->isPurgeable());
resource->cacheAccess().release();
}
}
}
bool stillOverbudget = this->overBudget();
while (stillOverbudget && fPurgeableQueue.count()) {
GrGpuResource* resource = fPurgeableQueue.peek();
SkASSERT(resource->isPurgeable());
resource->cacheAccess().release();
stillOverbudget = this->overBudget();
}
this->validate();
if (stillOverbudget) {
// Set this so that GrDrawingManager will issue a flush to free up resources with pending
// IO that we were unable to purge in this pass.
fRequestFlush = true;
}
}
void GrResourceCache::purgeUnlockedResources(bool scratchResourcesOnly) {
if (!scratchResourcesOnly) {
// We could disable maintaining the heap property here, but it would add a lot of
// complexity. Moreover, this is rarely called.
while (fPurgeableQueue.count()) {
GrGpuResource* resource = fPurgeableQueue.peek();
SkASSERT(resource->isPurgeable());
resource->cacheAccess().release();
}
} else {
// Sort the queue
fPurgeableQueue.sort();
// Make a list of the scratch resources to delete
SkTDArray<GrGpuResource*> scratchResources;
for (int i = 0; i < fPurgeableQueue.count(); i++) {
GrGpuResource* resource = fPurgeableQueue.at(i);
SkASSERT(resource->isPurgeable());
if (!resource->getUniqueKey().isValid()) {
*scratchResources.append() = resource;
}
}
// Delete the scratch resources. This must be done as a separate pass
// to avoid messing up the sorted order of the queue
for (int i = 0; i < scratchResources.count(); i++) {
scratchResources.getAt(i)->cacheAccess().release();
}
}
this->validate();
}
void GrResourceCache::purgeResourcesNotUsedSince(GrStdSteadyClock::time_point purgeTime) {
while (fPurgeableQueue.count()) {
const GrStdSteadyClock::time_point resourceTime =
fPurgeableQueue.peek()->cacheAccess().timeWhenResourceBecamePurgeable();
if (resourceTime >= purgeTime) {
// Resources were given both LRU timestamps and tagged with a frame number when
// they first became purgeable. The LRU timestamp won't change again until the
// resource is made non-purgeable again. So, at this point all the remaining
// resources in the timestamp-sorted queue will have a frame number >= to this
// one.
break;
}
GrGpuResource* resource = fPurgeableQueue.peek();
SkASSERT(resource->isPurgeable());
resource->cacheAccess().release();
}
}
void GrResourceCache::purgeUnlockedResources(size_t bytesToPurge, bool preferScratchResources) {
const size_t tmpByteBudget = SkTMax((size_t)0, fBytes - bytesToPurge);
bool stillOverbudget = tmpByteBudget < fBytes;
if (preferScratchResources && bytesToPurge < fPurgeableBytes) {
// Sort the queue
fPurgeableQueue.sort();
// Make a list of the scratch resources to delete
SkTDArray<GrGpuResource*> scratchResources;
size_t scratchByteCount = 0;
for (int i = 0; i < fPurgeableQueue.count() && stillOverbudget; i++) {
GrGpuResource* resource = fPurgeableQueue.at(i);
SkASSERT(resource->isPurgeable());
if (!resource->getUniqueKey().isValid()) {
*scratchResources.append() = resource;
scratchByteCount += resource->gpuMemorySize();
stillOverbudget = tmpByteBudget < fBytes - scratchByteCount;
}
}
// Delete the scratch resources. This must be done as a separate pass
// to avoid messing up the sorted order of the queue
for (int i = 0; i < scratchResources.count(); i++) {
scratchResources.getAt(i)->cacheAccess().release();
}
stillOverbudget = tmpByteBudget < fBytes;
this->validate();
}
// Purge any remaining resources in LRU order
if (stillOverbudget) {
const size_t cachedByteCount = fMaxBytes;
fMaxBytes = tmpByteBudget;
this->purgeAsNeeded();
fMaxBytes = cachedByteCount;
}
}
void GrResourceCache::processInvalidUniqueKeys(
const SkTArray<GrUniqueKeyInvalidatedMessage>& msgs) {
SkASSERT(fProxyProvider); // better have called setProxyProvider
for (int i = 0; i < msgs.count(); ++i) {
fProxyProvider->processInvalidProxyUniqueKey(msgs[i].key());
GrGpuResource* resource = this->findAndRefUniqueResource(msgs[i].key());
if (resource) {
resource->resourcePriv().removeUniqueKey();
resource->unref(); // If this resource is now purgeable, the cache will be notified.
}
}
}
void GrResourceCache::insertCrossContextGpuResource(GrGpuResource* resource) {
resource->ref();
}
void GrResourceCache::processFreedGpuResources() {
SkTArray<GrGpuResourceFreedMessage> msgs;
fFreedGpuResourceInbox.poll(&msgs);
for (int i = 0; i < msgs.count(); ++i) {
if (msgs[i].fOwningUniqueID == fContextUniqueID) {
msgs[i].fResource->unref();
}
}
}
void GrResourceCache::addToNonpurgeableArray(GrGpuResource* resource) {
int index = fNonpurgeableResources.count();
*fNonpurgeableResources.append() = resource;
*resource->cacheAccess().accessCacheIndex() = index;
}
void GrResourceCache::removeFromNonpurgeableArray(GrGpuResource* resource) {
int* index = resource->cacheAccess().accessCacheIndex();
// Fill the whole we will create in the array with the tail object, adjust its index, and
// then pop the array
GrGpuResource* tail = *(fNonpurgeableResources.end() - 1);
SkASSERT(fNonpurgeableResources[*index] == resource);
fNonpurgeableResources[*index] = tail;
*tail->cacheAccess().accessCacheIndex() = *index;
fNonpurgeableResources.pop();
SkDEBUGCODE(*index = -1);
}
uint32_t GrResourceCache::getNextTimestamp() {
// If we wrap then all the existing resources will appear older than any resources that get
// a timestamp after the wrap.
if (0 == fTimestamp) {
int count = this->getResourceCount();
if (count) {
// Reset all the timestamps. We sort the resources by timestamp and then assign
// sequential timestamps beginning with 0. This is O(n*lg(n)) but it should be extremely
// rare.
SkTDArray<GrGpuResource*> sortedPurgeableResources;
sortedPurgeableResources.setReserve(fPurgeableQueue.count());
while (fPurgeableQueue.count()) {
*sortedPurgeableResources.append() = fPurgeableQueue.peek();
fPurgeableQueue.pop();
}
SkTQSort(fNonpurgeableResources.begin(), fNonpurgeableResources.end() - 1,
CompareTimestamp);
// Pick resources out of the purgeable and non-purgeable arrays based on lowest
// timestamp and assign new timestamps.
int currP = 0;
int currNP = 0;
while (currP < sortedPurgeableResources.count() &&
currNP < fNonpurgeableResources.count()) {
uint32_t tsP = sortedPurgeableResources[currP]->cacheAccess().timestamp();
uint32_t tsNP = fNonpurgeableResources[currNP]->cacheAccess().timestamp();
SkASSERT(tsP != tsNP);
if (tsP < tsNP) {
sortedPurgeableResources[currP++]->cacheAccess().setTimestamp(fTimestamp++);
} else {
// Correct the index in the nonpurgeable array stored on the resource post-sort.
*fNonpurgeableResources[currNP]->cacheAccess().accessCacheIndex() = currNP;
fNonpurgeableResources[currNP++]->cacheAccess().setTimestamp(fTimestamp++);
}
}
// The above loop ended when we hit the end of one array. Finish the other one.
while (currP < sortedPurgeableResources.count()) {
sortedPurgeableResources[currP++]->cacheAccess().setTimestamp(fTimestamp++);
}
while (currNP < fNonpurgeableResources.count()) {
*fNonpurgeableResources[currNP]->cacheAccess().accessCacheIndex() = currNP;
fNonpurgeableResources[currNP++]->cacheAccess().setTimestamp(fTimestamp++);
}
// Rebuild the queue.
for (int i = 0; i < sortedPurgeableResources.count(); ++i) {
fPurgeableQueue.insert(sortedPurgeableResources[i]);
}
this->validate();
SkASSERT(count == this->getResourceCount());
// count should be the next timestamp we return.
SkASSERT(fTimestamp == SkToU32(count));
}
}
return fTimestamp++;
}
void GrResourceCache::notifyFlushOccurred(FlushType type) {
switch (type) {
case FlushType::kCacheRequested:
SkASSERT(fRequestFlush);
fRequestFlush = false;
break;
case FlushType::kExternal:
++fExternalFlushCnt;
if (0 == fExternalFlushCnt) {
// When this wraps just reset all the purgeable resources' last used flush state.
for (int i = 0; i < fPurgeableQueue.count(); ++i) {
fPurgeableQueue.at(i)->cacheAccess().setFlushCntWhenResourceBecamePurgeable(0);
}
}
break;
}
this->purgeAsNeeded();
}
void GrResourceCache::dumpMemoryStatistics(SkTraceMemoryDump* traceMemoryDump) const {
for (int i = 0; i < fNonpurgeableResources.count(); ++i) {
fNonpurgeableResources[i]->dumpMemoryStatistics(traceMemoryDump);
}
for (int i = 0; i < fPurgeableQueue.count(); ++i) {
fPurgeableQueue.at(i)->dumpMemoryStatistics(traceMemoryDump);
}
}
#ifdef SK_DEBUG
void GrResourceCache::validate() const {
// Reduce the frequency of validations for large resource counts.
static SkRandom gRandom;
int mask = (SkNextPow2(fCount + 1) >> 5) - 1;
if (~mask && (gRandom.nextU() & mask)) {
return;
}
struct Stats {
size_t fBytes;
int fBudgetedCount;
size_t fBudgetedBytes;
int fLocked;
int fScratch;
int fCouldBeScratch;
int fContent;
const ScratchMap* fScratchMap;
const UniqueHash* fUniqueHash;
Stats(const GrResourceCache* cache) {
memset(this, 0, sizeof(*this));
fScratchMap = &cache->fScratchMap;
fUniqueHash = &cache->fUniqueHash;
}
void update(GrGpuResource* resource) {
fBytes += resource->gpuMemorySize();
if (!resource->isPurgeable()) {
++fLocked;
}
const GrScratchKey& scratchKey = resource->resourcePriv().getScratchKey();
const GrUniqueKey& uniqueKey = resource->getUniqueKey();
if (resource->cacheAccess().isScratch()) {
SkASSERT(!uniqueKey.isValid());
++fScratch;
SkASSERT(fScratchMap->countForKey(scratchKey));
SkASSERT(!resource->resourcePriv().refsWrappedObjects());
} else if (scratchKey.isValid()) {
SkASSERT(SkBudgeted::kNo == resource->resourcePriv().isBudgeted() ||
uniqueKey.isValid());
if (!uniqueKey.isValid()) {
++fCouldBeScratch;
SkASSERT(fScratchMap->countForKey(scratchKey));
}
SkASSERT(!resource->resourcePriv().refsWrappedObjects());
}
if (uniqueKey.isValid()) {
++fContent;
SkASSERT(fUniqueHash->find(uniqueKey) == resource);
SkASSERT(SkBudgeted::kYes == resource->resourcePriv().isBudgeted() ||
resource->resourcePriv().refsWrappedObjects());
if (scratchKey.isValid()) {
SkASSERT(!fScratchMap->has(resource, scratchKey));
}
}
if (SkBudgeted::kYes == resource->resourcePriv().isBudgeted()) {
++fBudgetedCount;
fBudgetedBytes += resource->gpuMemorySize();
}
}
};
{
ScratchMap::ConstIter iter(&fScratchMap);
int count = 0;
for ( ; !iter.done(); ++iter) {
const GrGpuResource* resource = *iter;
SkASSERT(resource->resourcePriv().getScratchKey().isValid());
SkASSERT(!resource->getUniqueKey().isValid());
count++;
}
SkASSERT(count == fScratchMap.count()); // ensure the iterator is working correctly
}
Stats stats(this);
size_t purgeableBytes = 0;
for (int i = 0; i < fNonpurgeableResources.count(); ++i) {
SkASSERT(!fNonpurgeableResources[i]->isPurgeable() ||
fNewlyPurgeableResourceForValidation == fNonpurgeableResources[i]);
SkASSERT(*fNonpurgeableResources[i]->cacheAccess().accessCacheIndex() == i);
SkASSERT(!fNonpurgeableResources[i]->wasDestroyed());
stats.update(fNonpurgeableResources[i]);
}
for (int i = 0; i < fPurgeableQueue.count(); ++i) {
SkASSERT(fPurgeableQueue.at(i)->isPurgeable());
SkASSERT(*fPurgeableQueue.at(i)->cacheAccess().accessCacheIndex() == i);
SkASSERT(!fPurgeableQueue.at(i)->wasDestroyed());
stats.update(fPurgeableQueue.at(i));
purgeableBytes += fPurgeableQueue.at(i)->gpuMemorySize();
}
SkASSERT(fCount == this->getResourceCount());
SkASSERT(fBudgetedCount <= fCount);
SkASSERT(fBudgetedBytes <= fBytes);
SkASSERT(stats.fBytes == fBytes);
SkASSERT(stats.fBudgetedBytes == fBudgetedBytes);
SkASSERT(stats.fBudgetedCount == fBudgetedCount);
SkASSERT(purgeableBytes == fPurgeableBytes);
#if GR_CACHE_STATS
SkASSERT(fBudgetedHighWaterCount <= fHighWaterCount);
SkASSERT(fBudgetedHighWaterBytes <= fHighWaterBytes);
SkASSERT(fBytes <= fHighWaterBytes);
SkASSERT(fCount <= fHighWaterCount);
SkASSERT(fBudgetedBytes <= fBudgetedHighWaterBytes);
SkASSERT(fBudgetedCount <= fBudgetedHighWaterCount);
#endif
SkASSERT(stats.fContent == fUniqueHash.count());
SkASSERT(stats.fScratch + stats.fCouldBeScratch == fScratchMap.count());
// This assertion is not currently valid because we can be in recursive notifyCntReachedZero()
// calls. This will be fixed when subresource registration is explicit.
// bool overBudget = budgetedBytes > fMaxBytes || budgetedCount > fMaxCount;
// SkASSERT(!overBudget || locked == count || fPurging);
}
bool GrResourceCache::isInCache(const GrGpuResource* resource) const {
int index = *resource->cacheAccess().accessCacheIndex();
if (index < 0) {
return false;
}
if (index < fPurgeableQueue.count() && fPurgeableQueue.at(index) == resource) {
return true;
}
if (index < fNonpurgeableResources.count() && fNonpurgeableResources[index] == resource) {
return true;
}
SkDEBUGFAIL("Resource index should be -1 or the resource should be in the cache.");
return false;
}
#endif