Index: chrome/browser/predictors/loading_predictor_config.cc |
diff --git a/chrome/browser/predictors/loading_predictor_config.cc b/chrome/browser/predictors/loading_predictor_config.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..8ef8ea30e32b5235af7daeb35b2aef0f310cdbea |
--- /dev/null |
+++ b/chrome/browser/predictors/loading_predictor_config.cc |
@@ -0,0 +1,83 @@ |
+// Copyright 2017 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 "chrome/browser/predictors/loading_predictor_config.h" |
+#include "chrome/browser/predictors/resource_prefetch_common.h" |
+ |
+namespace predictors { |
+ |
+bool IsLoadingPredictortEnabled(Profile* profile, |
+ LoadingPredictorConfig* config) { |
+ return IsSpeculativeResourcePrefetchingEnabled(profile, config); |
+} |
+ |
+LoadingPredictorConfig::LoadingPredictorConfig() |
+ : mode(0), |
+ max_navigation_lifetime_seconds(60), |
+ max_urls_to_track(500), |
+ max_hosts_to_track(200), |
+ min_url_visit_count(2), |
+ max_resources_per_entry(50), |
+ max_origins_per_entry(50), |
+ max_consecutive_misses(3), |
+ max_redirect_consecutive_misses(5), |
+ min_resource_confidence_to_trigger_prefetch(0.7f), |
+ min_resource_hits_to_trigger_prefetch(2), |
+ max_prefetches_inflight_per_navigation(5), |
+ max_prefetches_inflight_per_host_per_navigation(3), |
+ is_url_learning_enabled(false), |
+ is_manifests_enabled(false), |
+ is_origin_learning_enabled(false) {} |
+ |
+LoadingPredictorConfig::LoadingPredictorConfig( |
+ const LoadingPredictorConfig& other) = default; |
+ |
+LoadingPredictorConfig::~LoadingPredictorConfig() = default; |
+ |
+bool LoadingPredictorConfig::IsLearningEnabled() const { |
+ return (mode & LEARNING) > 0; |
+} |
+ |
+bool LoadingPredictorConfig::IsPrefetchingEnabledForSomeOrigin( |
+ Profile* profile) const { |
+ int mask = PREFETCHING_FOR_NAVIGATION | PREFETCHING_FOR_EXTERNAL; |
+ return internal::IsPrefetchingEnabledInternal(profile, mode, mask); |
+} |
+ |
+bool LoadingPredictorConfig::IsPrefetchingEnabledForOrigin( |
+ Profile* profile, |
+ HintOrigin origin) const { |
+ int mask = 0; |
+ switch (origin) { |
+ case HintOrigin::NAVIGATION: |
+ mask = PREFETCHING_FOR_NAVIGATION; |
+ break; |
+ case HintOrigin::EXTERNAL: |
+ mask = PREFETCHING_FOR_EXTERNAL; |
+ break; |
+ } |
+ return internal::IsPrefetchingEnabledInternal(profile, mode, mask); |
+} |
+ |
+bool LoadingPredictorConfig::IsLowConfidenceForTest() const { |
+ return min_url_visit_count == 1 && |
+ std::abs(min_resource_confidence_to_trigger_prefetch - 0.5f) < 1e-6 && |
+ min_resource_hits_to_trigger_prefetch == 1; |
+} |
+ |
+bool LoadingPredictorConfig::IsHighConfidenceForTest() const { |
+ return min_url_visit_count == 3 && |
+ std::abs(min_resource_confidence_to_trigger_prefetch - 0.9f) < 1e-6 && |
+ min_resource_hits_to_trigger_prefetch == 3; |
+} |
+ |
+bool LoadingPredictorConfig::IsMoreResourcesEnabledForTest() const { |
+ return max_resources_per_entry == 100; |
+} |
+ |
+bool LoadingPredictorConfig::IsSmallDBEnabledForTest() const { |
+ return max_urls_to_track == 200 && max_hosts_to_track == 100; |
+} |
+ |
+} // namespace predictors |