Move the Dispatcher::EntrypointClass enum out of Dispatcher to its own file.

mojo/edk/system/dispatcher.h

 // Copyright 2013 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 MOJO_EDK_SYSTEM_DISPATCHER_H_
 #define MOJO_EDK_SYSTEM_DISPATCHER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <ostream>
 #include <vector>
 
 #include "mojo/edk/platform/scoped_platform_handle.h"
+#include "mojo/edk/system/entrypoint_class.h"
 #include "mojo/edk/system/handle_signals_state.h"
 #include "mojo/edk/system/memory.h"
 #include "mojo/edk/util/mutex.h"
 #include "mojo/edk/util/ref_counted.h"
 #include "mojo/edk/util/ref_ptr.h"
 #include "mojo/edk/util/thread_annotations.h"
 #include "mojo/public/c/system/buffer.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/c/system/handle.h"
 #include "mojo/public/c/system/message_pipe.h"
@@ skipping 41 matching lines @@
     UNKNOWN = 0,
     MESSAGE_PIPE,
     DATA_PIPE_PRODUCER,
     DATA_PIPE_CONSUMER,
     SHARED_BUFFER,
 
     // "Private" types (not exposed via the public interface):
     PLATFORM_HANDLE = -1
   };
 
-  // Classes of "entrypoints"/"syscalls": Each dispatcher should support entire
-  // classes of methods (and if they don't support a given class, they should
-  // return |MOJO_RESULT_INVALID_ARGUMENT| for all the methods in that class).
-  // Warning: A method may be called even if |SupportsEntrypointClass()|
-  // indicates that the method's class is not supported (see below).
-  enum class EntrypointClass {
-    // |ReadMessage()|, |WriteMessage()|:
-    MESSAGE_PIPE,
-
-    // |SetDataPipeProducerOptions()|, |GetDataPipeProducerOptions()|,
-    // |WriteData()|, |BeginWriteData()|, |EndWriteData()|:
-    DATA_PIPE_PRODUCER,
-
-    // |SetDataPipeConsumerOptions()|, |GetDataPipeConsumerOptions()|,
-    // |ReadData()|, |BeginReadData()|, |EndReadData()|:
-    DATA_PIPE_CONSUMER,
-
-    // |DuplicateBufferHandle()|, |GetBufferInformation()|, |MapBuffer()|:
-    BUFFER,
-  };
-
   // Gets the type of the dispatcher; see |Type| above.
   virtual Type GetType() const = 0;
 
-  // Gets whether the given entrypoint class is supported; see |EntrypointClass|
-  // above. This is ONLY called when a rights check has failed, to determine
-  // whether |MOJO_RESULT_PERMISSION_DENIED| (if the entrypoint class is
-  // supported) or |MOJO_RESULT_INVALID_ARGUMENT| (if not) should be returned.
-  // In the case that the rights check passes, |Core| will proceed immediately
-  // to call the method (so if the method is not supported, it must still return
-  // |MOJO_RESULT_INVALID_ARGUMENT|).
+  // Gets whether the given entrypoint class is supported; see the definition of
+  // |EntrypointClass|. This is ONLY called when a rights check has failed, to
+  // determine whether |MOJO_RESULT_PERMISSION_DENIED| (if the entrypoint class
+  // is supported) or |MOJO_RESULT_INVALID_ARGUMENT| (if not) should be
+  // returned. In the case that the rights check passes, |Core| will proceed
+  // immediately to call the method (so if the method is not supported, it must
+  // still return |MOJO_RESULT_INVALID_ARGUMENT|).
   virtual bool SupportsEntrypointClass(
       EntrypointClass entrypoint_class) const = 0;
 
   // These methods implement the various primitives named |Mojo...()|. These
   // take |mutex_| and handle races with |Close()|. Then they call out to
   // subclasses' |...ImplNoLock()| methods (still under |mutex_|), which
   // actually implement the primitives.
   // NOTE(vtl): This puts a big lock around each dispatcher (i.e., handle), and
   // prevents the various |...ImplNoLock()|s from releasing the lock as soon as
   // possible. If this becomes an issue, we can rethink this.
@@ skipping 376 matching lines @@
 
 // So logging macros and |DCHECK_EQ()|, etc. work.
 inline std::ostream& operator<<(std::ostream& out, Dispatcher::Type type) {
   return out << static_cast<int>(type);
 }
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_DISPATCHER_H_