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// Copyright 2013 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 CHROME_BROWSER_SITE_DETAILS_H_
#define CHROME_BROWSER_SITE_DETAILS_H_
#include "base/containers/hash_tables.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
// Maps an ID representing each BrowsingInstance to a set of site URLs.
typedef base::hash_map<int32, std::set<GURL>> BrowsingInstanceSiteMap;
// This enum represents various alternative process model policies that we want
// to evaluate. We'll estimate the process cost of each scenario.
enum IsolationScenarioType {
ISOLATE_ALL_SITES,
ISOLATE_HTTPS_SITES,
ISOLATE_EXTENSIONS,
ISOLATION_SCENARIO_LAST = ISOLATE_EXTENSIONS
};
// Contains the state required to estimate the process count under a particular
// process model. We have one of these per IsolationScenarioType.
struct IsolationScenario {
IsolationScenario();
~IsolationScenario();
void CollectSiteInfoForScenario(content::SiteInstance* primary,
const GURL& site);
void GetProcessCountEstimate();
void GetProcessCountLowerBound();
IsolationScenarioType policy;
std::set<GURL> sites;
BrowsingInstanceSiteMap browsing_instance_site_map;
};
// Information about the sites and SiteInstances in each BrowsingInstance, for
// use in estimating the number of processes needed for various process models.
struct SiteData {
SiteData();
~SiteData();
// One IsolationScenario object per IsolationScenarioType.
IsolationScenario scenarios[ISOLATION_SCENARIO_LAST + 1];
// Global list of all SiteInstances, used for de-duping related instances.
std::vector<content::SiteInstance*> instances;
};
// Maps a BrowserContext to information about the sites it contains.
typedef base::hash_map<content::BrowserContext*, SiteData>
BrowserContextSiteDataMap;
class SiteDetails {
public:
// Collect information about all committed sites in the given WebContents
// on the UI thread.
static void CollectSiteInfo(content::WebContents* contents,
SiteData* site_data);
// Updates the global histograms for tracking memory usage.
static void UpdateHistograms(const BrowserContextSiteDataMap& site_data_map,
int all_renderer_process_count,
int non_renderer_process_count);
private:
// Never needs to be constructed.
SiteDetails();
~SiteDetails();
DISALLOW_COPY_AND_ASSIGN(SiteDetails);
};
#endif // CHROME_BROWSER_SITE_DETAILS_H_
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