content/browser/utility_process_host_impl.h

   1 // Copyright (c) 2012 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 CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_
   6 #define CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "content/public/browser/browser_child_process_host_delegate.h"
  17 #include "content/public/browser/utility_process_host.h"
  18
  19 namespace base {
  20 class SequencedTaskRunner;
  21 }
  22
  23 namespace content {
  24 class BrowserChildProcessHostImpl;
  25
  26 class CONTENT_EXPORT UtilityProcessHostImpl
  27     : public NON_EXPORTED_BASE(UtilityProcessHost),
  28       public BrowserChildProcessHostDelegate {
  29  public:
  30   UtilityProcessHostImpl(UtilityProcessHostClient* client,
  31                          base::SequencedTaskRunner* client_task_runner);
  32   virtual ~UtilityProcessHostImpl();
  33
  34   // UtilityProcessHost implementation:
  35   virtual bool Send(IPC::Message* message) OVERRIDE;
  36   virtual bool StartBatchMode() OVERRIDE;
  37   virtual void EndBatchMode() OVERRIDE;
  38   virtual void SetExposedDir(const FilePath& dir) OVERRIDE;
  39   virtual void DisableSandbox() OVERRIDE;
  40   virtual void EnableZygote() OVERRIDE;
  41   virtual const ChildProcessData& GetData() OVERRIDE;
  42 #if defined(OS_POSIX)
  43   virtual void SetEnv(const base::EnvironmentVector& env) OVERRIDE;
  44 #endif
  45
  46   void set_child_flags(int flags) { child_flags_ = flags; }
  47
  48  private:
  49   // Starts a process if necessary.  Returns true if it succeeded or a process
  50   // has already been started via StartBatchMode().
  51   bool StartProcess();
  52
  53   // BrowserChildProcessHost:
  54   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  55   virtual void OnProcessCrashed(int exit_code) OVERRIDE;
  56
  57   // A pointer to our client interface, who will be informed of progress.
  58   scoped_refptr<UtilityProcessHostClient> client_;
  59   scoped_refptr<base::SequencedTaskRunner> client_task_runner_;
  60   // True when running in batch mode, i.e., StartBatchMode() has been called
  61   // and the utility process will run until EndBatchMode().
  62   bool is_batch_mode_;
  63
  64   FilePath exposed_dir_;
  65
  66   // Whether to pass switches::kNoSandbox to the child.
  67   bool no_sandbox_;
  68
  69   // Flags defined in ChildProcessHost with which to start the process.
  70   int child_flags_;
  71
  72   // Launch the utility process from the zygote. Defaults to false.
  73   bool use_linux_zygote_;
  74
  75   base::EnvironmentVector env_;
  76
  77   bool started_;
  78
  79   scoped_ptr<BrowserChildProcessHostImpl> process_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(UtilityProcessHostImpl);
  82 };
  83
  84 }  // namespace content
  85
  86 #endif  // CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_