[cc] Rename all cc/ filenames to Chromium style

cc/ThrottledTextureUploader.cpp

-// 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 "ThrottledTextureUploader.h"
-
-#include "Extensions3DChromium.h"
-#include "TraceEvent.h"
-#include <algorithm>
-#include <public/Platform.h>
-#include <public/WebGraphicsContext3D.h>
-#include <vector>
-
-namespace {
-
-// How many previous uploads to use when predicting future throughput.
-static const size_t uploadHistorySize = 100;
-
-// Global estimated number of textures per second to maintain estimates across
-// subsequent instances of ThrottledTextureUploader.
-// More than one thread will not access this variable, so we do not need to synchronize access.
-static double estimatedTexturesPerSecondGlobal = 48.0 * 60.0;
-
-} // anonymous namespace
-
-namespace cc {
-
-ThrottledTextureUploader::Query::Query(WebKit::WebGraphicsContext3D* context)
-    : m_context(context)
-    , m_queryId(0)
-    , m_value(0)
-    , m_hasValue(false)
-    , m_isNonBlocking(false)
-{
-    m_queryId = m_context->createQueryEXT();
-}
-
-ThrottledTextureUploader::Query::~Query()
-{
-    m_context->deleteQueryEXT(m_queryId);
-}
-
-void ThrottledTextureUploader::Query::begin()
-{
-    m_hasValue = false;
-    m_isNonBlocking = false;
-    m_context->beginQueryEXT(Extensions3DChromium::COMMANDS_ISSUED_CHROMIUM, m_queryId);
-}
-
-void ThrottledTextureUploader::Query::end()
-{
-    m_context->endQueryEXT(Extensions3DChromium::COMMANDS_ISSUED_CHROMIUM);
-}
-
-bool ThrottledTextureUploader::Query::isPending()
-{
-    unsigned available = 1;
-    m_context->getQueryObjectuivEXT(m_queryId, Extensions3DChromium::QUERY_RESULT_AVAILABLE_EXT, &available);
-    return !available;
-}
-
-void ThrottledTextureUploader::Query::wait()
-{
-    value();
-    return;
-}
-
-unsigned ThrottledTextureUploader::Query::value()
-{
-    if (!m_hasValue) {
-        m_context->getQueryObjectuivEXT(m_queryId, Extensions3DChromium::QUERY_RESULT_EXT, &m_value);
-        m_hasValue = true;
-    }
-    return m_value;
-}
-
-void ThrottledTextureUploader::Query::markAsNonBlocking()
-{
-    m_isNonBlocking = true;
-}
-
-bool ThrottledTextureUploader::Query::isNonBlocking()
-{
-    return m_isNonBlocking;
-}
-
-ThrottledTextureUploader::ThrottledTextureUploader(WebKit::WebGraphicsContext3D* context)
-    : m_context(context)
-    , m_texturesPerSecondHistory(uploadHistorySize, estimatedTexturesPerSecondGlobal)
-    , m_numBlockingTextureUploads(0)
-{
-}
-
-ThrottledTextureUploader::~ThrottledTextureUploader()
-{
-}
-
-size_t ThrottledTextureUploader::numBlockingUploads()
-{
-    processQueries();
-    return m_numBlockingTextureUploads;
-}
-
-void ThrottledTextureUploader::markPendingUploadsAsNonBlocking()
-{
-    for (Deque<OwnPtr<Query> >::iterator it = m_pendingQueries.begin();
-         it != m_pendingQueries.end(); ++it) {
-        if (it->get()->isNonBlocking())
-            continue;
-
-        m_numBlockingTextureUploads--;
-        it->get()->markAsNonBlocking();
-    }
-
-    ASSERT(!m_numBlockingTextureUploads);
-}
-
-double ThrottledTextureUploader::estimatedTexturesPerSecond()
-{
-    processQueries();
-
-    // The history should never be empty because we initialize all elements with an estimate.
-    ASSERT(m_texturesPerSecondHistory.size() == uploadHistorySize);
-
-    // Sort the history and use the median as our estimate.
-    std::vector<double> sortedHistory(m_texturesPerSecondHistory.begin(),
-                                      m_texturesPerSecondHistory.end());
-    std::sort(sortedHistory.begin(), sortedHistory.end());
-
-    estimatedTexturesPerSecondGlobal = sortedHistory[sortedHistory.size() * 2 / 3];
-    TRACE_COUNTER1("cc", "estimatedTexturesPerSecond", estimatedTexturesPerSecondGlobal);
-    return estimatedTexturesPerSecondGlobal;
-}
-
-void ThrottledTextureUploader::beginQuery()
-{
-    if (m_availableQueries.isEmpty())
-      m_availableQueries.append(Query::create(m_context));
-
-    m_availableQueries.first()->begin();
-}
-
-void ThrottledTextureUploader::endQuery()
-{
-    m_availableQueries.first()->end();
-    m_pendingQueries.append(m_availableQueries.takeFirst());
-    m_numBlockingTextureUploads++;
-}
-
-void ThrottledTextureUploader::uploadTexture(CCResourceProvider* resourceProvider, Parameters upload)
-{
-    bool isFullUpload = upload.destOffset.isZero() &&
-                        upload.sourceRect.size() == upload.texture->texture()->size();
-
-    if (isFullUpload)
-        beginQuery();
-
-    upload.texture->updateRect(resourceProvider, upload.sourceRect, upload.destOffset);
-
-    if (isFullUpload)
-        endQuery();
-}
-
-void ThrottledTextureUploader::processQueries()
-{
-    while (!m_pendingQueries.isEmpty()) {
-        if (m_pendingQueries.first()->isPending())
-            break;
-
-        unsigned usElapsed = m_pendingQueries.first()->value();
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.TextureGpuUploadTimeUS", usElapsed, 0, 100000, 50);
-
-        if (!m_pendingQueries.first()->isNonBlocking())
-            m_numBlockingTextureUploads--;
-
-        // Remove the oldest values from our history and insert the new one
-        double texturesPerSecond = 1.0 / (usElapsed * 1e-6);
-        m_texturesPerSecondHistory.pop_back();
-        m_texturesPerSecondHistory.push_front(texturesPerSecond);
-
-        m_availableQueries.append(m_pendingQueries.takeFirst());
-    }
-}
-
-}