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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_SITE_DETAILS_H_
      6 #define CHROME_BROWSER_SITE_DETAILS_H_
      7 
      8 #include "base/containers/hash_tables.h"
      9 #include "content/public/browser/browser_context.h"
     10 #include "content/public/browser/site_instance.h"
     11 #include "content/public/browser/web_contents.h"
     12 
     13 // Maps an ID representing each BrowsingInstance to a set of site URLs.
     14 typedef base::hash_map<int32, std::set<GURL> > BrowsingInstanceSiteMap;
     15 
     16 // Information about the sites and SiteInstances in each BrowsingInstance, for
     17 // use in estimating the number of processes needed for various process models.
     18 struct SiteData {
     19   SiteData();
     20   ~SiteData();
     21 
     22   std::set<GURL> sites;
     23   std::set<GURL> https_sites;
     24   std::vector<content::SiteInstance*> instances;
     25   BrowsingInstanceSiteMap instance_site_map;
     26   BrowsingInstanceSiteMap instance_https_site_map;
     27 };
     28 
     29 // Maps a BrowserContext to information about the SiteInstances it contains.
     30 typedef base::hash_map<content::BrowserContext*, SiteData>
     31     BrowserContextSiteDataMap;
     32 
     33 class SiteDetails {
     34  public:
     35   // Collect information about all committed sites in the given WebContents
     36   // on the UI thread.
     37   static void CollectSiteInfo(content::WebContents* contents,
     38                               SiteData* site_data);
     39 
     40   // Updates the global histograms for tracking memory usage.
     41   static void UpdateHistograms(const BrowserContextSiteDataMap& site_data_map,
     42                                int all_renderer_process_count,
     43                                int non_renderer_process_count);
     44 
     45  private:
     46   // Never needs to be constructed.
     47   SiteDetails();
     48   ~SiteDetails();
     49 
     50   DISALLOW_COPY_AND_ASSIGN(SiteDetails);
     51 };
     52 
     53 #endif  // CHROME_BROWSER_SITE_DETAILS_H_
     54