[cc] Rename all cc/ filenames to Chromium style

cc/CCPrioritizedTextureManager.cpp

Index: cc/CCPrioritizedTextureManager.cpp
diff --git a/cc/CCPrioritizedTextureManager.cpp b/cc/CCPrioritizedTextureManager.cpp
deleted file mode 100644
index a609548c2f85646652b9171306fe1a90d7b2d2fd..0000000000000000000000000000000000000000
--- a/cc/CCPrioritizedTextureManager.cpp
+++ /dev/null
@@ -1,410 +0,0 @@
-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "config.h"
-
-#include "CCPrioritizedTextureManager.h"
-
-#include "base/stl_util.h"
-#include "CCPrioritizedTexture.h"
-#include "CCPriorityCalculator.h"
-#include "CCProxy.h"
-#include "TraceEvent.h"
-#include <algorithm>
-
-using namespace std;
-
-namespace cc {
-
-CCPrioritizedTextureManager::CCPrioritizedTextureManager(size_t maxMemoryLimitBytes, int, int pool)
-    : m_maxMemoryLimitBytes(maxMemoryLimitBytes)
-    , m_memoryUseBytes(0)
-    , m_memoryAboveCutoffBytes(0)
-    , m_memoryAvailableBytes(0)
-    , m_pool(pool)
-    , m_needsUpdateBackingsPrioritites(false)
-{
-}
-
-CCPrioritizedTextureManager::~CCPrioritizedTextureManager()
-{
-    while (m_textures.size() > 0)
-        unregisterTexture(*m_textures.begin());
-
-    deleteEvictedBackings();
-
-    // Each remaining backing is a leaked opengl texture. There should be none.
-    ASSERT(m_backings.isEmpty());
-}
-
-void CCPrioritizedTextureManager::prioritizeTextures()
-{
-    TRACE_EVENT0("cc", "CCPrioritizedTextureManager::prioritizeTextures");
-    ASSERT(CCProxy::isMainThread());
-
-    // Sorting textures in this function could be replaced by a slightly
-    // modified O(n) quick-select to partition textures rather than
-    // sort them (if performance of the sort becomes an issue).
-
-    TextureVector& sortedTextures = m_tempTextureVector;
-    sortedTextures.clear();
-
-    // Copy all textures into a vector and sort them.
-    for (TextureSet::iterator it = m_textures.begin(); it != m_textures.end(); ++it)
-        sortedTextures.append(*it);
-    std::sort(sortedTextures.begin(), sortedTextures.end(), compareTextures);
-
-    m_memoryAvailableBytes = m_maxMemoryLimitBytes;
-    m_priorityCutoff = CCPriorityCalculator::lowestPriority();
-    size_t memoryBytes = 0;
-    for (TextureVector::iterator it = sortedTextures.begin(); it != sortedTextures.end(); ++it) {
-        if ((*it)->requestPriority() == CCPriorityCalculator::lowestPriority())
-            break;
-
-        if ((*it)->isSelfManaged()) {
-            // Account for self-managed memory immediately by reducing the memory
-            // available (since it never gets acquired).
-            size_t newMemoryBytes = memoryBytes + (*it)->bytes();
-            if (newMemoryBytes > m_memoryAvailableBytes) {
-                m_priorityCutoff = (*it)->requestPriority();
-                m_memoryAvailableBytes = memoryBytes;
-                break;
-            }
-            m_memoryAvailableBytes -= (*it)->bytes();
-        } else {
-            size_t newMemoryBytes = memoryBytes + (*it)->bytes();
-            if (newMemoryBytes > m_memoryAvailableBytes) {
-                m_priorityCutoff = (*it)->requestPriority();
-                break;
-            }
-            memoryBytes = newMemoryBytes;
-        }
-    }
-
-    // Only allow textures if they are higher than the cutoff. All textures
-    // of the same priority are accepted or rejected together, rather than
-    // being partially allowed randomly.
-    m_memoryAboveCutoffBytes = 0;
-    for (TextureVector::iterator it = sortedTextures.begin(); it != sortedTextures.end(); ++it) {
-        bool isAbovePriorityCutoff = CCPriorityCalculator::priorityIsHigher((*it)->requestPriority(), m_priorityCutoff);
-        (*it)->setAbovePriorityCutoff(isAbovePriorityCutoff);
-        if (isAbovePriorityCutoff && !(*it)->isSelfManaged())
-            m_memoryAboveCutoffBytes += (*it)->bytes();
-    }
-    sortedTextures.clear();
-
-    m_needsUpdateBackingsPrioritites = true;
-
-    ASSERT(m_memoryAboveCutoffBytes <= m_memoryAvailableBytes);
-    ASSERT(memoryAboveCutoffBytes() <= maxMemoryLimitBytes());
-}
-
-void CCPrioritizedTextureManager::updateBackingsPriorities()
-{
-    TRACE_EVENT0("cc", "CCPrioritizedTextureManager::updateBackingsPriorities");
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
-
-    if (!m_needsUpdateBackingsPrioritites)
-        return;
-
-#if !ASSERT_DISABLED
-    assertInvariants();
-#endif
-
-    // Update backings' priorities and put backings in eviction/recycling order.
-    BackingVector& sortedBackings = m_tempBackingVector;
-    sortedBackings.clear();
-    for (BackingSet::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        (*it)->updatePriority();
-        sortedBackings.append(*it);
-    }
-    std::sort(sortedBackings.begin(), sortedBackings.end(), compareBackings);
-
-    for (BackingVector::iterator it = sortedBackings.begin(); it != sortedBackings.end(); ++it) {
-        m_backings.remove(*it);
-        m_backings.add(*it);
-    }
-    sortedBackings.clear();
-    m_needsUpdateBackingsPrioritites = false;
-
-#if !ASSERT_DISABLED
-    assertInvariants();
-#endif
-}
-
-void CCPrioritizedTextureManager::clearPriorities()
-{
-    ASSERT(CCProxy::isMainThread());
-    for (TextureSet::iterator it = m_textures.begin(); it != m_textures.end(); ++it) {
-        // FIXME: We should remove this and just set all priorities to
-        //        CCPriorityCalculator::lowestPriority() once we have priorities
-        //        for all textures (we can't currently calculate distances for
-        //        off-screen textures).
-        (*it)->setRequestPriority(CCPriorityCalculator::lingeringPriority((*it)->requestPriority()));
-    }
-}
-
-bool CCPrioritizedTextureManager::requestLate(CCPrioritizedTexture* texture)
-{
-    ASSERT(CCProxy::isMainThread());
-
-    // This is already above cutoff, so don't double count it's memory below.
-    if (texture->isAbovePriorityCutoff())
-        return true;
-
-    if (CCPriorityCalculator::priorityIsLower(texture->requestPriority(), m_priorityCutoff))
-        return false;
-
-    size_t newMemoryBytes = m_memoryAboveCutoffBytes + texture->bytes();
-    if (newMemoryBytes > m_memoryAvailableBytes)
-        return false;
-
-    m_memoryAboveCutoffBytes = newMemoryBytes;
-    texture->setAbovePriorityCutoff(true);
-    m_needsUpdateBackingsPrioritites = true;
-    return true;
-}
-
-void CCPrioritizedTextureManager::acquireBackingTextureIfNeeded(CCPrioritizedTexture* texture, CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
-    ASSERT(!texture->isSelfManaged());
-    ASSERT(texture->isAbovePriorityCutoff());
-    if (texture->backing() || !texture->isAbovePriorityCutoff())
-        return;
-
-    // Make sure that the backings list is up to date and sorted before traversing it.
-    updateBackingsPriorities();
-
-    // Find a backing below, by either recycling or allocating.
-    CCPrioritizedTexture::Backing* backing = 0;
-
-    // First try to recycle
-    for (BackingSet::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        if ((*it)->hadOwnerAtLastPriorityUpdate() && (*it)->wasAbovePriorityCutoffAtLastPriorityUpdate())
-            break;
-        if ((*it)->size() == texture->size() && (*it)->format() == texture->format()) {
-            backing = (*it);
-            break;
-        }
-    }
-
-    // Otherwise reduce memory and just allocate a new backing texures.
-    if (!backing) {
-        evictBackingsToReduceMemory(m_memoryAvailableBytes - texture->bytes(), RespectManagerPriorityCutoff, resourceProvider);
-        backing = createBacking(texture->size(), texture->format(), resourceProvider);
-    }
-
-    // Move the used backing texture to the end of the eviction list.
-    if (backing->owner())
-        backing->owner()->unlink();
-    texture->link(backing);
-    m_backings.remove(backing);
-    m_backings.add(backing);
-
-    // Update the backing's priority from its new owner.
-    backing->updatePriority();
-}
-
-void CCPrioritizedTextureManager::evictBackingsToReduceMemory(size_t limitBytes, EvictionPriorityPolicy evictionPolicy, CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread());
-    if (memoryUseBytes() <= limitBytes)
-        return;
-
-    // Destroy backings until we are below the limit,
-    // or until all backings remaining are above the cutoff.
-    while (memoryUseBytes() > limitBytes && m_backings.size() > 0) {
-        CCPrioritizedTexture::Backing* backing = *m_backings.begin();
-        if (evictionPolicy == RespectManagerPriorityCutoff)
-            if (backing->hadOwnerAtLastPriorityUpdate() && backing->wasAbovePriorityCutoffAtLastPriorityUpdate())
-                break;
-        evictBackingResource(backing, resourceProvider);
-    }
-}
-
-void CCPrioritizedTextureManager::reduceMemory(CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
-
-    // Make sure that the backings list is up to date and sorted before traversing it.
-    updateBackingsPriorities();
-
-    evictBackingsToReduceMemory(m_memoryAvailableBytes, RespectManagerPriorityCutoff, resourceProvider);
-    ASSERT(memoryUseBytes() <= maxMemoryLimitBytes());
-
-    // We currently collect backings from deleted textures for later recycling.
-    // However, if we do that forever we will always use the max limit even if
-    // we really need very little memory. This should probably be solved by reducing the
-    // limit externally, but until then this just does some "clean up" of unused
-    // backing textures (any more than 10%).
-    size_t wastedMemory = 0;
-    for (BackingSet::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        if ((*it)->owner())
-            break;
-        wastedMemory += (*it)->bytes();
-    }
-    size_t tenPercentOfMemory = m_memoryAvailableBytes / 10;
-    if (wastedMemory > tenPercentOfMemory)
-        evictBackingsToReduceMemory(memoryUseBytes() - (wastedMemory - tenPercentOfMemory), RespectManagerPriorityCutoff, resourceProvider);
-
-    deleteEvictedBackings();
-}
-
-void CCPrioritizedTextureManager::clearAllMemory(CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
-    ASSERT(resourceProvider);
-    evictBackingsToReduceMemory(0, DoNotRespectManagerPriorityCutoff, resourceProvider);
-    deleteEvictedBackings();
-}
-
-void CCPrioritizedTextureManager::reduceMemoryOnImplThread(size_t limitBytes, CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread());
-    ASSERT(resourceProvider);
-    evictBackingsToReduceMemory(limitBytes, DoNotRespectManagerPriorityCutoff, resourceProvider);
-}
-
-void CCPrioritizedTextureManager::getEvictedBackings(BackingVector& evictedBackings)
-{
-    ASSERT(CCProxy::isImplThread());
-    evictedBackings.clear();
-    evictedBackings.append(m_evictedBackings);
-}
-
-void CCPrioritizedTextureManager::unlinkEvictedBackings(const BackingVector& evictedBackings)
-{
-    ASSERT(CCProxy::isMainThread());
-    for (BackingVector::const_iterator it = evictedBackings.begin(); it != evictedBackings.end(); ++it) {
-        CCPrioritizedTexture::Backing* backing = (*it);
-        if (backing->owner())
-            backing->owner()->unlink();
-    }
-}
-
-bool CCPrioritizedTextureManager::deleteEvictedBackings()
-{
-    ASSERT(CCProxy::isMainThread() || (CCProxy::isImplThread() && CCProxy::isMainThreadBlocked()));
-    bool linkedEvictedBackingsExisted = false;
-    for (BackingVector::const_iterator it = m_evictedBackings.begin(); it != m_evictedBackings.end(); ++it) {
-        CCPrioritizedTexture::Backing* backing = (*it);
-        if (backing->owner()) {
-            linkedEvictedBackingsExisted = true;
-            backing->owner()->unlink();
-        }
-        delete backing;
-    }
-    m_evictedBackings.clear();
-    return linkedEvictedBackingsExisted;
-}
-
-void CCPrioritizedTextureManager::registerTexture(CCPrioritizedTexture* texture)
-{
-    ASSERT(CCProxy::isMainThread());
-    ASSERT(texture);
-    ASSERT(!texture->textureManager());
-    ASSERT(!texture->backing());
-    ASSERT(!ContainsKey(m_textures, texture));
-
-    texture->setManagerInternal(this);
-    m_textures.insert(texture);
-
-}
-
-void CCPrioritizedTextureManager::unregisterTexture(CCPrioritizedTexture* texture)
-{
-    ASSERT(CCProxy::isMainThread() || (CCProxy::isImplThread() && CCProxy::isMainThreadBlocked()));
-    ASSERT(texture);
-    ASSERT(ContainsKey(m_textures, texture));
-
-    returnBackingTexture(texture);
-    texture->setManagerInternal(0);
-    m_textures.erase(texture);
-    texture->setAbovePriorityCutoff(false);
-}
-
-void CCPrioritizedTextureManager::returnBackingTexture(CCPrioritizedTexture* texture)
-{
-    ASSERT(CCProxy::isMainThread() || (CCProxy::isImplThread() && CCProxy::isMainThreadBlocked()));
-    if (texture->backing()) {
-        texture->unlink();
-        m_needsUpdateBackingsPrioritites = true;
-    }
-}
-
-CCPrioritizedTexture::Backing* CCPrioritizedTextureManager::createBacking(IntSize size, GC3Denum format, CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
-    ASSERT(resourceProvider);
-    CCResourceProvider::ResourceId resourceId = resourceProvider->createResource(m_pool, size, format, CCResourceProvider::TextureUsageAny);
-    CCPrioritizedTexture::Backing* backing = new CCPrioritizedTexture::Backing(resourceId, resourceProvider, size, format);
-    m_memoryUseBytes += backing->bytes();
-    // Put backing texture at the front for eviction, since it isn't in use yet.
-    m_backings.insertBefore(m_backings.begin(), backing);
-    return backing;
-}
-
-void CCPrioritizedTextureManager::evictBackingResource(CCPrioritizedTexture::Backing* backing, CCResourceProvider* resourceProvider)
-{
-    ASSERT(CCProxy::isImplThread());
-    ASSERT(backing);
-    ASSERT(resourceProvider);
-    ASSERT(m_backings.find(backing) != m_backings.end());
-
-    // Note that we create a backing and its resource at the same time, but we
-    // delete the backing structure and its resource in two steps. This is because
-    // we can delete the resource while the main thread is running, but we cannot
-    // unlink backings while the main thread is running.
-    backing->deleteResource(resourceProvider);
-    m_memoryUseBytes -= backing->bytes();
-    m_backings.remove(backing);
-    m_evictedBackings.append(backing);
-}
-
-#if !ASSERT_DISABLED
-void CCPrioritizedTextureManager::assertInvariants()
-{
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
-
-    // If we hit any of these asserts, there is a bug in this class. To see
-    // where the bug is, call this function at the beginning and end of
-    // every public function.
-
-    // Backings/textures must be doubly-linked and only to other backings/textures in this manager.
-    for (BackingSet::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        if ((*it)->owner()) {
-            ASSERT(ContainsKey(m_textures, (*it)->owner()));
-            ASSERT((*it)->owner()->backing() == (*it));
-        }
-    }
-    for (TextureSet::iterator it = m_textures.begin(); it != m_textures.end(); ++it) {
-        if ((*it)->backing()) {
-            ASSERT(m_backings.find((*it)->backing()) != m_backings.end());
-            ASSERT((*it)->backing()->owner() == (*it));
-        }
-    }
-
-    // At all times, backings that can be evicted must always come before
-    // backings that can't be evicted in the backing texture list (otherwise
-    // reduceMemory will not find all textures available for eviction/recycling).
-    bool reachedOwned = false;
-    bool reachedAboveCutoff = false;
-    for (BackingSet::iterator it = m_backings.begin(); it != m_backings.end(); ++it) {
-        if ((*it)->hadOwnerAtLastPriorityUpdate())
-            reachedOwned = true;
-        if ((*it)->wasAbovePriorityCutoffAtLastPriorityUpdate())
-            reachedAboveCutoff = true;
-        if (reachedOwned)
-            ASSERT((*it)->hadOwnerAtLastPriorityUpdate());
-        if (reachedAboveCutoff) {
-            ASSERT((*it)->hadOwnerAtLastPriorityUpdate() && (*it)->wasAbovePriorityCutoffAtLastPriorityUpdate());
-            ASSERT(reachedOwned);
-        }
-    }
-}
-#endif
-
-
-} // namespace cc