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Side by Side Diff: content/browser/site_instance.h

Issue 7464009: Removal of Profile from content part 1. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: slight tweaking for comments Created 9 years, 5 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_ 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_
7 #pragma once 7 #pragma once
8 8
9 #include "content/browser/renderer_host/render_process_host.h" 9 #include "content/browser/renderer_host/render_process_host.h"
10 #include "content/common/notification_observer.h" 10 #include "content/common/notification_observer.h"
11 #include "content/common/notification_registrar.h" 11 #include "content/common/notification_registrar.h"
12 #include "googleurl/src/gurl.h" 12 #include "googleurl/src/gurl.h"
13 13
14 class BrowsingInstance; 14 class BrowsingInstance;
15 15
16 namespace content {
17 class BrowserContext;
18 }
19
16 /////////////////////////////////////////////////////////////////////////////// 20 ///////////////////////////////////////////////////////////////////////////////
17 // 21 //
18 // SiteInstance class 22 // SiteInstance class
19 // 23 //
20 // A SiteInstance is a data structure that is associated with all pages in a 24 // A SiteInstance is a data structure that is associated with all pages in a
21 // given instance of a web site. Here, a web site is identified by its 25 // given instance of a web site. Here, a web site is identified by its
22 // registered domain name and scheme. An instance includes all pages 26 // registered domain name and scheme. An instance includes all pages
23 // that are connected (i.e., either a user or a script navigated from one 27 // that are connected (i.e., either a user or a script navigated from one
24 // to the other). We represent instances using the BrowsingInstance class. 28 // to the other). We represent instances using the BrowsingInstance class.
25 // 29 //
26 // In --process-per-tab, one SiteInstance is created for each tab (i.e., in the 30 // In --process-per-tab, one SiteInstance is created for each tab (i.e., in the
27 // TabContents constructor), unless the tab is created by script (i.e., in 31 // TabContents constructor), unless the tab is created by script (i.e., in
28 // TabContents::CreateNewView). This corresponds to one process per 32 // TabContents::CreateNewView). This corresponds to one process per
29 // BrowsingInstance. 33 // BrowsingInstance.
30 // 34 //
31 // In process-per-site-instance (the current default process model), 35 // In process-per-site-instance (the current default process model),
32 // SiteInstances are created (1) when the user manually creates a new tab 36 // SiteInstances are created (1) when the user manually creates a new tab
33 // (which also creates a new BrowsingInstance), and (2) when the user navigates 37 // (which also creates a new BrowsingInstance), and (2) when the user navigates
34 // across site boundaries (which uses the same BrowsingInstance). If the user 38 // across site boundaries (which uses the same BrowsingInstance). If the user
35 // navigates within a site, or opens links in new tabs within a site, the same 39 // navigates within a site, or opens links in new tabs within a site, the same
36 // SiteInstance is used. 40 // SiteInstance is used.
37 // 41 //
38 // In --process-per-site, we consolidate all SiteInstances for a given site, 42 // In --process-per-site, we consolidate all SiteInstances for a given site,
39 // throughout the entire profile. This ensures that only one process will be 43 // throughout the entire browser context. This ensures that only one process
40 // dedicated to each site. 44 // will be dedicated to each site.
41 // 45 //
42 // Each NavigationEntry for a TabContents points to the SiteInstance that 46 // Each NavigationEntry for a TabContents points to the SiteInstance that
43 // rendered it. Each RenderViewHost also points to the SiteInstance that it is 47 // rendered it. Each RenderViewHost also points to the SiteInstance that it is
44 // associated with. A SiteInstance keeps track of the number of these 48 // associated with. A SiteInstance keeps track of the number of these
45 // references and deletes itself when the count goes to zero. This means that 49 // references and deletes itself when the count goes to zero. This means that
46 // a SiteInstance is only live as long as it is accessible, either from new 50 // a SiteInstance is only live as long as it is accessible, either from new
47 // tabs with no NavigationEntries or in NavigationEntries in the history. 51 // tabs with no NavigationEntries or in NavigationEntries in the history.
48 // 52 //
49 /////////////////////////////////////////////////////////////////////////////// 53 ///////////////////////////////////////////////////////////////////////////////
50 class SiteInstance : public base::RefCounted<SiteInstance>, 54 class SiteInstance : public base::RefCounted<SiteInstance>,
(...skipping 61 matching lines...) Expand 10 before | Expand all | Expand 10 after
112 116
113 // Factory method to create a new SiteInstance. This will create a new 117 // Factory method to create a new SiteInstance. This will create a new
114 // new BrowsingInstance, so it should only be used when creating a new tab 118 // new BrowsingInstance, so it should only be used when creating a new tab
115 // from scratch (or similar circumstances). Callers should ensure that 119 // from scratch (or similar circumstances). Callers should ensure that
116 // this SiteInstance becomes ref counted, by storing it in a scoped_refptr. 120 // this SiteInstance becomes ref counted, by storing it in a scoped_refptr.
117 // 121 //
118 // The render process host factory may be NULL. See SiteInstance constructor. 122 // The render process host factory may be NULL. See SiteInstance constructor.
119 // 123 //
120 // TODO(creis): This may be an argument to build a pass_refptr<T> class, as 124 // TODO(creis): This may be an argument to build a pass_refptr<T> class, as
121 // Darin suggests. 125 // Darin suggests.
122 static SiteInstance* CreateSiteInstance(Profile* profile); 126 static SiteInstance* CreateSiteInstance(
127 content::BrowserContext* browser_context);
123 128
124 // Factory method to get the appropriate SiteInstance for the given URL, in 129 // Factory method to get the appropriate SiteInstance for the given URL, in
125 // a new BrowsingInstance. Use this instead of CreateSiteInstance when you 130 // a new BrowsingInstance. Use this instead of CreateSiteInstance when you
126 // know the URL, since it allows special site grouping rules to be applied 131 // know the URL, since it allows special site grouping rules to be applied
127 // (for example, to group chrome-ui pages into the same instance). 132 // (for example, to group chrome-ui pages into the same instance).
128 static SiteInstance* CreateSiteInstanceForURL(Profile* profile, 133 static SiteInstance* CreateSiteInstanceForURL(
129 const GURL& url); 134 content::BrowserContext* browser_context, const GURL& url);
130 135
131 // Returns the site for the given URL, which includes only the scheme and 136 // Returns the site for the given URL, which includes only the scheme and
132 // registered domain. Returns an empty GURL if the URL has no host. 137 // registered domain. Returns an empty GURL if the URL has no host.
133 static GURL GetSiteForURL(Profile* profile, const GURL& url); 138 static GURL GetSiteForURL(content::BrowserContext* context, const GURL& url);
134 139
135 // Return whether both URLs are part of the same web site, for the purpose of 140 // Return whether both URLs are part of the same web site, for the purpose of
136 // assigning them to processes accordingly. The decision is currently based 141 // assigning them to processes accordingly. The decision is currently based
137 // on the registered domain of the URLs (google.com, bbc.co.uk), as well as 142 // on the registered domain of the URLs (google.com, bbc.co.uk), as well as
138 // the scheme (https, http). This ensures that two pages will be in 143 // the scheme (https, http). This ensures that two pages will be in
139 // the same process if they can communicate with other via JavaScript. 144 // the same process if they can communicate with other via JavaScript.
140 // (e.g., docs.google.com and mail.google.com have DOM access to each other 145 // (e.g., docs.google.com and mail.google.com have DOM access to each other
141 // if they both set their document.domain properties to google.com.) 146 // if they both set their document.domain properties to google.com.)
142 static bool IsSameWebSite(Profile* profile, 147 static bool IsSameWebSite(content::BrowserContext* browser_context,
143 const GURL& url1, const GURL& url2); 148 const GURL& url1, const GURL& url2);
144 149
145 // Returns the renderer type for this URL. 150 // Returns the renderer type for this URL.
146 static RenderProcessHost::Type RendererTypeForURL(const GURL& url); 151 static RenderProcessHost::Type RendererTypeForURL(const GURL& url);
147 152
148 protected: 153 protected:
149 friend class base::RefCounted<SiteInstance>; 154 friend class base::RefCounted<SiteInstance>;
150 friend class BrowsingInstance; 155 friend class BrowsingInstance;
151 156
152 // Virtual to allow tests to extend it. 157 // Virtual to allow tests to extend it.
153 virtual ~SiteInstance(); 158 virtual ~SiteInstance();
154 159
155 // Create a new SiteInstance. Protected to give access to BrowsingInstance 160 // Create a new SiteInstance. Protected to give access to BrowsingInstance
156 // and tests; most callers should use CreateSiteInstance or 161 // and tests; most callers should use CreateSiteInstance or
157 // GetRelatedSiteInstance instead. 162 // GetRelatedSiteInstance instead.
158 explicit SiteInstance(BrowsingInstance* browsing_instance); 163 explicit SiteInstance(BrowsingInstance* browsing_instance);
159 164
160 // Get the effective URL for the given actual URL. 165 // Get the effective URL for the given actual URL.
161 static GURL GetEffectiveURL(Profile* profile, const GURL& url); 166 static GURL GetEffectiveURL(content::BrowserContext* browser_context,
167 const GURL& url);
162 168
163 // Returns the type of renderer process this instance belongs in, for grouping 169 // Returns the type of renderer process this instance belongs in, for grouping
164 // purposes. 170 // purposes.
165 RenderProcessHost::Type GetRendererType(); 171 RenderProcessHost::Type GetRendererType();
166 172
167 private: 173 private:
168 // NotificationObserver implementation. 174 // NotificationObserver implementation.
169 virtual void Observe(int type, 175 virtual void Observe(int type,
170 const NotificationSource& source, 176 const NotificationSource& source,
171 const NotificationDetails& details); 177 const NotificationDetails& details);
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199 // The web site that this SiteInstance is rendering pages for. 205 // The web site that this SiteInstance is rendering pages for.
200 GURL site_; 206 GURL site_;
201 207
202 // Whether SetSite has been called. 208 // Whether SetSite has been called.
203 bool has_site_; 209 bool has_site_;
204 210
205 DISALLOW_COPY_AND_ASSIGN(SiteInstance); 211 DISALLOW_COPY_AND_ASSIGN(SiteInstance);
206 }; 212 };
207 213
208 #endif // CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_ 214 #endif // CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_
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