Refactor ChildProcess and related classes to create a framework outside of br...

base/mp/mp_child_process_context.h

+// Copyright (c) 2010 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 BASE_MP_CHILD_PROCESS_CONTEXT_H_
+#define BASE_MP_CHILD_PROCESS_CONTEXT_H_
+
+#include "base/basictypes.h"
+#include "base/file_path.h"
+#include "base/process.h"
+#include "base/ref_counted.h"
+#include "base/task.h"
+#include "base/tracked.h"
+#include <string>
+
+class CommandLine;
+class MessageLoop;
+
+namespace base {
+
+class MpChildProcessContext {
+ public:
+  // Return the bad message received application exit code.
+  virtual int GetBadMessageResultCode() = 0;
+
+  // Return the normal application exit code.
+  virtual int GetNormalExitResultCode() = 0;
+
+  // Generate a randome channel ID value.
+  virtual std::string GenerateRandomChannelID(void* instance) = 0;
+
+  // Return the identifier for the current thread.
+  virtual bool GetCurrentThreadIdentifier(int* identifier) = 0;
+
+  // Return true if currently on the specified thread.
+  virtual bool CurrentlyOnThread(int identifier) = 0;
+
+  // Post a task to the specified thread.
+  virtual bool PostTask(int identifier,
+                        const tracked_objects::Location& from_here,
+                        Task* task) = 0;
+
+  // Post a task to the thread responsible for launching processes.
+  virtual bool PostProcessLauncherTask(
+                        const tracked_objects::Location& from_here,
+                        Task* task) = 0;
+
+  // Derived classes implement this method to create the process.
+  virtual base::ProcessHandle StartProcess(
+#if defined(OS_WIN)
+      const FilePath& exposed_dir,
+#elif defined(OS_POSIX)
+      bool use_zygote,
+      const base::environment_vector& environ,
+      int ipcfd,
+#endif
+      CommandLine* cmd_line) = 0;
+
+  // Derived classes implement this method to ensure that the process is
+  // terminated.
+  virtual void EnsureProcessTerminated(base::ProcessHandle) = 0;
+
+  // Derived classes implement this method to check if a process has crashed.
+  virtual bool CheckProcessCrash(bool* child_exited,
+#if defined(OS_POSIX)
+                                  bool use_zygote,
+#endif
+                                  base::ProcessHandle handle) = 0;
+};
+
+}  // namespace base
+
+#endif  // BASE_MP_CHILD_PROCESS_CONTEXT_H_