Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(668)

Unified Diff: components/offline_pages/background/offliner_policy.h

Issue 2489443002: Move all components/offline_pages/ files into component/offline_pages/core (Closed)
Patch Set: rebase Created 4 years ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: components/offline_pages/background/offliner_policy.h
diff --git a/components/offline_pages/background/offliner_policy.h b/components/offline_pages/background/offliner_policy.h
deleted file mode 100644
index 7ffd45496a4704ca45ed28ea028837245029e612..0000000000000000000000000000000000000000
--- a/components/offline_pages/background/offliner_policy.h
+++ /dev/null
@@ -1,151 +0,0 @@
-// Copyright 2016 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 COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_POLICY_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_POLICY_H_
-
-namespace {
-// The max number of started tries is to guard against pages that make the
-// prerenderer crash. It should be greater than or equal to the max number of
-// completed tries.
-const int kMaxStartedTries = 5;
-// The number of max completed tries is based on Gin2G-poor testing showing that
-// we often need about 4 tries with a 2 minute window, or 3 retries with a 3
-// minute window. Also, we count one try now for foreground/disabled requests.
-const int kMaxCompletedTries = 3;
-// By the time we get to a week, the user has forgotten asking for a page.
-const int kRequestExpirationTimeInSeconds = 60 * 60 * 24 * 7;
-
-// Scheduled background processing time limits.
-const int kDozeModeBackgroundServiceWindowSeconds = 60 * 3;
-const int kDefaultBackgroundProcessingTimeBudgetSeconds =
- kDozeModeBackgroundServiceWindowSeconds - 10;
-const int kSinglePageTimeLimitWhenBackgroundScheduledSeconds =
- kDozeModeBackgroundServiceWindowSeconds - 10;
-
-// Immediate processing time limits.
-// Note: experiments on GIN-2g-poor show many page requests took 3 or 4
-// attempts in background scheduled mode with timeout of 2 minutes. So for
-// immediate processing mode, give page requests 4 times that limit (8 min).
-// Then budget up to 5 of those requests in processing window.
-const int kSinglePageTimeLimitForImmediateLoadSeconds = 60 * 8;
-const int kImmediateLoadProcessingTimeBudgetSeconds =
- kSinglePageTimeLimitForImmediateLoadSeconds * 5;
-} // namespace
-
-namespace offline_pages {
-
-// Policy for the Background Offlining system. Some policy will belong to the
-// RequestCoordinator, some to the RequestQueue, and some to the Offliner.
-class OfflinerPolicy {
- public:
- OfflinerPolicy()
- : prefer_untried_requests_(true),
- prefer_earlier_requests_(true),
- retry_count_is_more_important_than_recency_(true),
- max_started_tries_(kMaxStartedTries),
- max_completed_tries_(kMaxCompletedTries),
- background_scheduled_processing_time_budget_(
- kDefaultBackgroundProcessingTimeBudgetSeconds) {}
-
- // Constructor for unit tests.
- OfflinerPolicy(bool prefer_untried,
- bool prefer_earlier,
- bool prefer_retry_count,
- int max_started_tries,
- int max_completed_tries,
- int background_processing_time_budget)
- : prefer_untried_requests_(prefer_untried),
- prefer_earlier_requests_(prefer_earlier),
- retry_count_is_more_important_than_recency_(prefer_retry_count),
- max_started_tries_(max_started_tries),
- max_completed_tries_(max_completed_tries),
- background_scheduled_processing_time_budget_(
- background_processing_time_budget) {}
-
- // TODO(petewil): Numbers here are chosen arbitrarily, do the proper studies
- // to get good policy numbers. Eventually this should get data from a finch
- // experiment.
-
- // Returns true if we should prefer retrying lesser tried requests.
- bool ShouldPreferUntriedRequests() const { return prefer_untried_requests_; }
-
- // Returns true if we should prefer older requests of equal number of tries.
- bool ShouldPreferEarlierRequests() const { return prefer_earlier_requests_; }
-
- // Returns true if retry count is considered more important than recency in
- // picking which request to try next.
- bool RetryCountIsMoreImportantThanRecency() const {
- return retry_count_is_more_important_than_recency_;
- }
-
- // The max number of times we will start a request. Not all started attempts
- // will complete. This may be caused by prerenderer issues or chromium being
- // swapped out of memory.
- int GetMaxStartedTries() const { return max_started_tries_; }
-
- // The max number of times we will retry a request when the attempt
- // completed, but failed.
- int GetMaxCompletedTries() const { return max_completed_tries_; }
-
- bool PowerRequired(bool user_requested) const {
- return (!user_requested);
- }
-
- bool UnmeteredNetworkRequired(bool user_requested) const {
- return !(user_requested);
- }
-
- int BatteryPercentageRequired(bool user_requested) const {
- if (user_requested)
- return 0;
- // This is so low because we require the device to be plugged in and
- // charging. If we decide to allow non-user requested pages when not
- // plugged in, we should raise this somewhat higher.
- return 25;
- }
-
- // How many seconds to keep trying new pages for, before we give up, and
- // return to the scheduler.
- // TODO(dougarnett): Consider parameterizing these time limit/budget
- // calls with processing mode.
- int GetProcessingTimeBudgetWhenBackgroundScheduledInSeconds() const {
- return background_scheduled_processing_time_budget_;
- }
-
- // How many seconds to keep trying new pages for, before we give up, when
- // processing started immediately (without scheduler).
- int GetProcessingTimeBudgetForImmediateLoadInSeconds() const {
- return kImmediateLoadProcessingTimeBudgetSeconds;
- }
-
- // How long do we allow a page to load before giving up on it when
- // background loading was scheduled.
- int GetSinglePageTimeLimitWhenBackgroundScheduledInSeconds() const {
- return kSinglePageTimeLimitWhenBackgroundScheduledSeconds;
- }
-
- // How long do we allow a page to load before giving up on it when
- // immediately background loading.
- int GetSinglePageTimeLimitForImmediateLoadInSeconds() const {
- return kSinglePageTimeLimitForImmediateLoadSeconds;
- }
-
- // How long we allow requests to remain in the system before giving up.
- int GetRequestExpirationTimeInSeconds() const {
- return kRequestExpirationTimeInSeconds;
- }
-
- private:
- bool prefer_untried_requests_;
- bool prefer_earlier_requests_;
- bool retry_count_is_more_important_than_recency_;
- int max_started_tries_;
- int max_completed_tries_;
- int background_scheduled_processing_time_budget_;
-};
-} // namespace offline_pages
-
-
-#endif // COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_POLICY_H_

Powered by Google App Engine
This is Rietveld 408576698