[cc] Rename all cc/ filenames to Chromium style

cc/prioritized_texture_manager.h

 // 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.
+
+#ifndef CCPrioritizedTextureManager_h
+#define CCPrioritizedTextureManager_h
+
+#include "base/basictypes.h"
+#include "base/hash_tables.h"
+#include "base/memory/scoped_ptr.h"
+#include "CCPrioritizedTexture.h"
+#include "CCPriorityCalculator.h"
+#include "CCTexture.h"
+#include "GraphicsContext3D.h"
+#include "IntRect.h"
+#include "IntSize.h"
+#include <wtf/ListHashSet.h>
+#include <wtf/Vector.h>
+
+#if defined(COMPILER_GCC)
+namespace BASE_HASH_NAMESPACE {
+template<>
+struct hash<cc::CCPrioritizedTexture*> {
+  size_t operator()(cc::CCPrioritizedTexture* ptr) const {
+    return hash<size_t>()(reinterpret_cast<size_t>(ptr));
+  }
+};
+} // namespace BASE_HASH_NAMESPACE
+#endif // COMPILER
+
+namespace cc {
+
+class CCPriorityCalculator;
+
+class CCPrioritizedTextureManager {
+public:
+    static scoped_ptr<CCPrioritizedTextureManager> create(size_t maxMemoryLimitBytes, int maxTextureSize, int pool)
+    {
+        return make_scoped_ptr(new CCPrioritizedTextureManager(maxMemoryLimitBytes, maxTextureSize, pool));
+    }
+    scoped_ptr<CCPrioritizedTexture> createTexture(IntSize size, GC3Denum format)
+    {
+        return make_scoped_ptr(new CCPrioritizedTexture(this, size, format));
+    }
+    ~CCPrioritizedTextureManager();
+
+    typedef Vector<CCPrioritizedTexture::Backing*> BackingVector;
+
+    // FIXME (http://crbug.com/137094): This 64MB default is a straggler from the
+    // old texture manager and is just to give us a default memory allocation before
+    // we get a callback from the GPU memory manager. We should probaby either:
+    // - wait for the callback before rendering anything instead
+    // - push this into the GPU memory manager somehow.
+    static size_t defaultMemoryAllocationLimit() { return 64 * 1024 * 1024; }
+
+    // memoryUseBytes() describes the number of bytes used by existing allocated textures.
+    // memoryAboveCutoffBytes() describes the number of bytes that would be used if all
+    // textures that are above the cutoff were allocated.
+    // memoryUseBytes() <= memoryAboveCutoffBytes() should always be true.
+    size_t memoryUseBytes() const { return m_memoryUseBytes; }
+    size_t memoryAboveCutoffBytes() const { return m_memoryAboveCutoffBytes; }
+    size_t memoryForSelfManagedTextures() const { return m_maxMemoryLimitBytes - m_memoryAvailableBytes; }
+
+    void setMaxMemoryLimitBytes(size_t bytes) { m_maxMemoryLimitBytes = bytes; }
+    size_t maxMemoryLimitBytes() const { return m_maxMemoryLimitBytes; }
+
+    void prioritizeTextures();
+    void clearPriorities();
+
+    void reduceMemoryOnImplThread(size_t limitBytes, CCResourceProvider*);
+    bool evictedBackingsExist() const { return !m_evictedBackings.isEmpty(); }
+    void getEvictedBackings(BackingVector& evictedBackings);
+    void unlinkEvictedBackings(const BackingVector& evictedBackings);
+    // Deletes all evicted backings, unlinking them from their owning textures if needed.
+    // Returns true if this function unlinked any backings from their owning texture while
+    // destroying them.
+    bool deleteEvictedBackings();
+
+    bool requestLate(CCPrioritizedTexture*);
+
+    void reduceMemory(CCResourceProvider*);
+    void clearAllMemory(CCResourceProvider*);
+
+    void acquireBackingTextureIfNeeded(CCPrioritizedTexture*, CCResourceProvider*);
+
+    void registerTexture(CCPrioritizedTexture*);
+    void unregisterTexture(CCPrioritizedTexture*);
+    void returnBackingTexture(CCPrioritizedTexture*);
+
+private:
+    friend class CCPrioritizedTextureTest;
+
+    enum EvictionPriorityPolicy {
+        RespectManagerPriorityCutoff,
+        DoNotRespectManagerPriorityCutoff,
+    };
+
+    // Compare textures. Highest priority first.
+    static inline bool compareTextures(CCPrioritizedTexture* a, CCPrioritizedTexture* b)
+    {
+        if (a->requestPriority() == b->requestPriority())
+            return a < b;
+        return CCPriorityCalculator::priorityIsHigher(a->requestPriority(), b->requestPriority());
+    }
+    // Compare backings. Lowest priority first.
+    static inline bool compareBackings(CCPrioritizedTexture::Backing* a, CCPrioritizedTexture::Backing* b)
+    {
+        int priorityA = a->requestPriorityAtLastPriorityUpdate();
+        int priorityB = b->requestPriorityAtLastPriorityUpdate();
+        if (priorityA != priorityB)
+            return CCPriorityCalculator::priorityIsLower(priorityA, priorityB);
+        bool aboveCutoffA = a->wasAbovePriorityCutoffAtLastPriorityUpdate();
+        bool aboveCutoffB = b->wasAbovePriorityCutoffAtLastPriorityUpdate();
+        if (!aboveCutoffA && aboveCutoffB)
+            return true;
+        if (aboveCutoffA && !aboveCutoffB)
+            return false;
+        return a < b;
+    }
+
+    CCPrioritizedTextureManager(size_t maxMemoryLimitBytes, int maxTextureSize, int pool);
+
+    void updateBackingsPriorities();
+    void evictBackingsToReduceMemory(size_t limitBytes, EvictionPriorityPolicy, CCResourceProvider*);
+    CCPrioritizedTexture::Backing* createBacking(IntSize, GC3Denum format, CCResourceProvider*);
+    void evictBackingResource(CCPrioritizedTexture::Backing*, CCResourceProvider*);
+
+#if !ASSERT_DISABLED
+    void assertInvariants();
+#endif
+
+    size_t m_maxMemoryLimitBytes;
+    unsigned m_priorityCutoff;
+    size_t m_memoryUseBytes;
+    size_t m_memoryAboveCutoffBytes;
+    size_t m_memoryAvailableBytes;
+    int m_pool;
+
+    typedef base::hash_set<CCPrioritizedTexture*> TextureSet;
+    typedef ListHashSet<CCPrioritizedTexture::Backing*> BackingSet;
+    typedef Vector<CCPrioritizedTexture*> TextureVector;
+
+    TextureSet m_textures;
+    BackingSet m_backings;
+    BackingVector m_evictedBackings;
+
+    TextureVector m_tempTextureVector;
+    BackingVector m_tempBackingVector;
+
+    // Set by the main thread when it adjust priorities in such a way that
+    // the m_backings array's view of priorities is now out of date.
+    bool m_needsUpdateBackingsPrioritites;
+
+    DISALLOW_COPY_AND_ASSIGN(CCPrioritizedTextureManager);
+};
+
+}  // namespace cc
+
+#endif