ipc/glue/ProcessChild.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_ipc_ProcessChild_h
   8 #define mozilla_ipc_ProcessChild_h
   9
  10 #include "Endpoint.h"
  11 #include "base/message_loop.h"
  12 #include "base/process.h"
  13
  14 #include "chrome/common/child_process.h"
  15
  16 #include "mozilla/ipc/ProcessUtils.h"
  17
  18 // ProcessChild is the base class for all subprocesses of the main
  19 // browser process.  Its code runs on the thread that started in
  20 // main().
  21
  22 namespace mozilla {
  23 namespace ipc {
  24
  25 class ProcessChild : public ChildProcess {
  26  protected:
  27   typedef base::ProcessId ProcessId;
  28
  29  public:
  30   explicit ProcessChild(ProcessId aParentPid, const nsID& aMessageChannelId);
  31
  32   ProcessChild(const ProcessChild&) = delete;
  33   ProcessChild& operator=(const ProcessChild&) = delete;
  34
  35   virtual ~ProcessChild();
  36
  37   virtual bool Init(int aArgc, char* aArgv[]) = 0;
  38
  39   static void AddPlatformBuildID(std::vector<std::string>& aExtraArgs);
  40
  41   static bool InitPrefs(int aArgc, char* aArgv[]);
  42
  43   virtual void CleanUp() {}
  44
  45   static MessageLoop* message_loop() { return gProcessChild->mUILoop; }
  46
  47   static void NotifiedImpendingShutdown();
  48
  49   static bool ExpectingShutdown();
  50
  51   static void AppendToIPCShutdownStateAnnotation(const nsCString& aStr) {
  52     StaticMutexAutoLock lock(gIPCShutdownStateLock);
  53     gIPCShutdownStateAnnotation.Append(" - "_ns);
  54     gIPCShutdownStateAnnotation.Append(aStr);
  55   }
  56
  57   /**
  58    * Exit *now*.  Do not shut down XPCOM, do not pass Go, do not run
  59    * static destructors, do not collect $200.
  60    */
  61   static void QuickExit();
  62
  63  protected:
  64   static ProcessChild* current() { return gProcessChild; }
  65
  66   ProcessId ParentPid() { return mParentPid; }
  67
  68   UntypedEndpoint TakeInitialEndpoint();
  69
  70  private:
  71   static ProcessChild* gProcessChild;
  72   static StaticMutex gIPCShutdownStateLock;
  73   static nsCString gIPCShutdownStateAnnotation
  74       MOZ_GUARDED_BY(gIPCShutdownStateLock);
  75
  76   MessageLoop* mUILoop;
  77   ProcessId mParentPid;
  78   nsID mMessageChannelId;
  79 };
  80
  81 }  // namespace ipc
  82 }  // namespace mozilla
  83
  84 #endif  // ifndef mozilla_ipc_ProcessChild_h