New implementation of font precache on Windows.

chrome/service/service_utility_process_host.h

 // Copyright (c) 2011 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_SERVICE_SERVICE_UTILITY_PROCESS_HOST_H_
 #define CHROME_SERVICE_SERVICE_UTILITY_PROCESS_HOST_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 89 matching lines @@
       const gfx::Rect& render_area,
       int render_dpi,
       const std::vector<printing::PageRange>& page_ranges);
 
   // Starts a process to get capabilities and defaults for the specified
   // printer. Used on Windows to isolate the service process from printer driver
   // crashes by executing this in a separate process. The process does not run
   // in a sandbox.
   bool StartGetPrinterCapsAndDefaults(const std::string& printer_name);
 
+  // Getter of unique process id for this process.
+  int unique_process_id();

[jam, 2011/09/19 16:31:17]

no need for this getter since it's only used in the class

[arthurhsu, 2011/09/19 18:22:51]

Done.

+
  protected:
   // Allows this method to be overridden for tests.
   virtual FilePath GetUtilityProcessCmd();
 
   // Overriden from ChildProcessHost.
   virtual bool CanShutdown();
   virtual void OnChildDied();
 
  private:
   // Starts a process.  Returns true iff it succeeded. |exposed_dir| is the
   // path to tbe exposed to the sandbox. This is ignored if |no_sandbox| is
   // true.
   bool StartProcess(bool no_sandbox, const FilePath& exposed_dir);
 
   // IPC messages:
   virtual bool OnMessageReceived(const IPC::Message& message);
   // Called when at least one page in the specified PDF has been rendered
   // successfully into metafile_path_;
   void OnRenderPDFPagesToMetafileSucceeded(int highest_rendered_page_number);
   // Any other messages to be handled by the client.
   bool MessageForClient(const IPC::Message& message);
 
 #if defined(OS_WIN)  // This hack is Windows-specific.
   void OnPreCacheFont(const LOGFONT& font);
+  void OnReleaseCachedFonts();
 #endif  // defined(OS_WIN)
 
   // A pointer to our client interface, who will be informed of progress.
   scoped_refptr<Client> client_;
   scoped_refptr<base::MessageLoopProxy> client_message_loop_proxy_;
   bool waiting_for_reply_;
   // The path to the temp file where the metafile will be written to.
   FilePath metafile_path_;
   // The temporary folder created for the metafile.
   scoped_ptr<ScopedTempDir> scratch_metafile_dir_;
+  // The unique id created for the process.
+  int unique_process_id_;

[jam, 2011/09/19 16:31:17]

nit: this should just be called process_id_ to be consistent with our other
usages of this (i.e. we don't say unique_process_id anywhere)

[arthurhsu, 2011/09/19 18:22:51]

Done.

 
   DISALLOW_COPY_AND_ASSIGN(ServiceUtilityProcessHost);
 };
 
 #endif  // CHROME_SERVICE_SERVICE_UTILITY_PROCESS_HOST_H_