Revert "Move mojo edk into mojo/edk"

mojo/edk/system/core.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_CORE_H_
-#define MOJO_EDK_SYSTEM_CORE_H_
-
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/synchronization/lock.h"
-#include "mojo/edk/system/handle_table.h"
-#include "mojo/edk/system/mapping_table.h"
-#include "mojo/edk/system/memory.h"
-#include "mojo/edk/system/system_impl_export.h"
-#include "mojo/public/c/system/buffer.h"
-#include "mojo/public/c/system/data_pipe.h"
-#include "mojo/public/c/system/message_pipe.h"
-#include "mojo/public/c/system/types.h"
-
-namespace mojo {
-
-namespace embedder {
-class PlatformSupport;
-}
-
-namespace system {
-
-class Dispatcher;
-struct HandleSignalsState;
-
-// |Core| is an object that implements the Mojo system calls. All public methods
-// are thread-safe.
-class MOJO_SYSTEM_IMPL_EXPORT Core {
- public:
-  // ---------------------------------------------------------------------------
-
-  // These methods are only to be used by via the embedder API (and internally):
-  explicit Core(scoped_ptr<embedder::PlatformSupport> platform_support);
-  virtual ~Core();
-
-  // Adds |dispatcher| to the handle table, returning the handle for it. Returns
-  // |MOJO_HANDLE_INVALID| on failure, namely if the handle table is full.
-  MojoHandle AddDispatcher(const scoped_refptr<Dispatcher>& dispatcher);
-
-  // Looks up the dispatcher for the given handle. Returns null if the handle is
-  // invalid.
-  scoped_refptr<Dispatcher> GetDispatcher(MojoHandle handle);
-
-  embedder::PlatformSupport* platform_support() const {
-    return platform_support_.get();
-  }
-
-  // ---------------------------------------------------------------------------
-
-  // System calls implementation:
-  MojoTimeTicks GetTimeTicksNow();
-  MojoResult Close(MojoHandle handle);
-  MojoResult Wait(MojoHandle handle,
-                  MojoHandleSignals signals,
-                  MojoDeadline deadline,
-                  UserPointer<MojoHandleSignalsState> signals_state);
-  MojoResult WaitMany(UserPointer<const MojoHandle> handles,
-                      UserPointer<const MojoHandleSignals> signals,
-                      uint32_t num_handles,
-                      MojoDeadline deadline,
-                      UserPointer<uint32_t> result_index,
-                      UserPointer<MojoHandleSignalsState> signals_states);
-  MojoResult CreateMessagePipe(
-      UserPointer<const MojoCreateMessagePipeOptions> options,
-      UserPointer<MojoHandle> message_pipe_handle0,
-      UserPointer<MojoHandle> message_pipe_handle1);
-  MojoResult WriteMessage(MojoHandle message_pipe_handle,
-                          UserPointer<const void> bytes,
-                          uint32_t num_bytes,
-                          UserPointer<const MojoHandle> handles,
-                          uint32_t num_handles,
-                          MojoWriteMessageFlags flags);
-  MojoResult ReadMessage(MojoHandle message_pipe_handle,
-                         UserPointer<void> bytes,
-                         UserPointer<uint32_t> num_bytes,
-                         UserPointer<MojoHandle> handles,
-                         UserPointer<uint32_t> num_handles,
-                         MojoReadMessageFlags flags);
-  MojoResult CreateDataPipe(
-      UserPointer<const MojoCreateDataPipeOptions> options,
-      UserPointer<MojoHandle> data_pipe_producer_handle,
-      UserPointer<MojoHandle> data_pipe_consumer_handle);
-  MojoResult WriteData(MojoHandle data_pipe_producer_handle,
-                       UserPointer<const void> elements,
-                       UserPointer<uint32_t> num_bytes,
-                       MojoWriteDataFlags flags);
-  MojoResult BeginWriteData(MojoHandle data_pipe_producer_handle,
-                            UserPointer<void*> buffer,
-                            UserPointer<uint32_t> buffer_num_bytes,
-                            MojoWriteDataFlags flags);
-  MojoResult EndWriteData(MojoHandle data_pipe_producer_handle,
-                          uint32_t num_bytes_written);
-  MojoResult ReadData(MojoHandle data_pipe_consumer_handle,
-                      UserPointer<void> elements,
-                      UserPointer<uint32_t> num_bytes,
-                      MojoReadDataFlags flags);
-  MojoResult BeginReadData(MojoHandle data_pipe_consumer_handle,
-                           UserPointer<const void*> buffer,
-                           UserPointer<uint32_t> buffer_num_bytes,
-                           MojoReadDataFlags flags);
-  MojoResult EndReadData(MojoHandle data_pipe_consumer_handle,
-                         uint32_t num_bytes_read);
-  MojoResult CreateSharedBuffer(
-      UserPointer<const MojoCreateSharedBufferOptions> options,
-      uint64_t num_bytes,
-      UserPointer<MojoHandle> shared_buffer_handle);
-  MojoResult DuplicateBufferHandle(
-      MojoHandle buffer_handle,
-      UserPointer<const MojoDuplicateBufferHandleOptions> options,
-      UserPointer<MojoHandle> new_buffer_handle);
-  MojoResult MapBuffer(MojoHandle buffer_handle,
-                       uint64_t offset,
-                       uint64_t num_bytes,
-                       UserPointer<void*> buffer,
-                       MojoMapBufferFlags flags);
-  MojoResult UnmapBuffer(UserPointer<void> buffer);
-
- private:
-  friend bool internal::ShutdownCheckNoLeaks(Core*);
-
-  // Internal implementation of |Wait()| and |WaitMany()|; doesn't do basic
-  // validation of arguments. |*result_index| is only set if the result (whether
-  // success or failure) applies to a specific handle, so its value should be
-  // preinitialized to |static_cast<uint32_t>(-1)|.
-  MojoResult WaitManyInternal(const MojoHandle* handles,
-                              const MojoHandleSignals* signals,
-                              uint32_t num_handles,
-                              MojoDeadline deadline,
-                              uint32_t* result_index,
-                              HandleSignalsState* signals_states);
-
-  const scoped_ptr<embedder::PlatformSupport> platform_support_;
-
-  // TODO(vtl): |handle_table_lock_| should be a reader-writer lock (if only we
-  // had them).
-  base::Lock handle_table_lock_;  // Protects |handle_table_|.
-  HandleTable handle_table_;
-
-  base::Lock mapping_table_lock_;  // Protects |mapping_table_|.
-  MappingTable mapping_table_;
-
-  DISALLOW_COPY_AND_ASSIGN(Core);
-};
-
-}  // namespace system
-}  // namespace mojo
-
-#endif  // MOJO_EDK_SYSTEM_CORE_H_