Revert "Move mojo edk into mojo/edk"

mojo/edk/system/local_message_pipe_endpoint.cc

Index: mojo/edk/system/local_message_pipe_endpoint.cc
diff --git a/mojo/edk/system/local_message_pipe_endpoint.cc b/mojo/edk/system/local_message_pipe_endpoint.cc
deleted file mode 100644
index 124241e069e8439d578e06bf7037fd5f2be18fdc..0000000000000000000000000000000000000000
--- a/mojo/edk/system/local_message_pipe_endpoint.cc
+++ /dev/null
@@ -1,176 +0,0 @@
-// 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.
-
-#include "mojo/edk/system/local_message_pipe_endpoint.h"
-
-#include <string.h>
-
-#include "base/logging.h"
-#include "mojo/edk/system/dispatcher.h"
-#include "mojo/edk/system/message_in_transit.h"
-
-namespace mojo {
-namespace system {
-
-LocalMessagePipeEndpoint::LocalMessagePipeEndpoint()
-    : is_open_(true), is_peer_open_(true) {
-}
-
-LocalMessagePipeEndpoint::~LocalMessagePipeEndpoint() {
-  DCHECK(!is_open_);
-  DCHECK(message_queue_.IsEmpty());  // Should be implied by not being open.
-}
-
-MessagePipeEndpoint::Type LocalMessagePipeEndpoint::GetType() const {
-  return kTypeLocal;
-}
-
-bool LocalMessagePipeEndpoint::OnPeerClose() {
-  DCHECK(is_open_);
-  DCHECK(is_peer_open_);
-
-  HandleSignalsState old_state = GetHandleSignalsState();
-  is_peer_open_ = false;
-  HandleSignalsState new_state = GetHandleSignalsState();
-
-  if (!new_state.equals(old_state))
-    waiter_list_.AwakeWaitersForStateChange(new_state);
-
-  return true;
-}
-
-void LocalMessagePipeEndpoint::EnqueueMessage(
-    scoped_ptr<MessageInTransit> message) {
-  DCHECK(is_open_);
-  DCHECK(is_peer_open_);
-
-  bool was_empty = message_queue_.IsEmpty();
-  message_queue_.AddMessage(message.Pass());
-  if (was_empty)
-    waiter_list_.AwakeWaitersForStateChange(GetHandleSignalsState());
-}
-
-void LocalMessagePipeEndpoint::Close() {
-  DCHECK(is_open_);
-  is_open_ = false;
-  message_queue_.Clear();
-}
-
-void LocalMessagePipeEndpoint::CancelAllWaiters() {
-  DCHECK(is_open_);
-  waiter_list_.CancelAllWaiters();
-}
-
-MojoResult LocalMessagePipeEndpoint::ReadMessage(
-    UserPointer<void> bytes,
-    UserPointer<uint32_t> num_bytes,
-    DispatcherVector* dispatchers,
-    uint32_t* num_dispatchers,
-    MojoReadMessageFlags flags) {
-  DCHECK(is_open_);
-  DCHECK(!dispatchers || dispatchers->empty());
-
-  const uint32_t max_bytes = num_bytes.IsNull() ? 0 : num_bytes.Get();
-  const uint32_t max_num_dispatchers = num_dispatchers ? *num_dispatchers : 0;
-
-  if (message_queue_.IsEmpty()) {
-    return is_peer_open_ ? MOJO_RESULT_SHOULD_WAIT
-                         : MOJO_RESULT_FAILED_PRECONDITION;
-  }
-
-  // TODO(vtl): If |flags & MOJO_READ_MESSAGE_FLAG_MAY_DISCARD|, we could pop
-  // and release the lock immediately.
-  bool enough_space = true;
-  MessageInTransit* message = message_queue_.PeekMessage();
-  if (!num_bytes.IsNull())
-    num_bytes.Put(message->num_bytes());
-  if (message->num_bytes() <= max_bytes)
-    bytes.PutArray(message->bytes(), message->num_bytes());
-  else
-    enough_space = false;
-
-  if (DispatcherVector* queued_dispatchers = message->dispatchers()) {
-    if (num_dispatchers)
-      *num_dispatchers = static_cast<uint32_t>(queued_dispatchers->size());
-    if (enough_space) {
-      if (queued_dispatchers->empty()) {
-        // Nothing to do.
-      } else if (queued_dispatchers->size() <= max_num_dispatchers) {
-        DCHECK(dispatchers);
-        dispatchers->swap(*queued_dispatchers);
-      } else {
-        enough_space = false;
-      }
-    }
-  } else {
-    if (num_dispatchers)
-      *num_dispatchers = 0;
-  }
-
-  message = nullptr;
-
-  if (enough_space || (flags & MOJO_READ_MESSAGE_FLAG_MAY_DISCARD)) {
-    message_queue_.DiscardMessage();
-
-    // Now it's empty, thus no longer readable.
-    if (message_queue_.IsEmpty()) {
-      // It's currently not possible to wait for non-readability, but we should
-      // do the state change anyway.
-      waiter_list_.AwakeWaitersForStateChange(GetHandleSignalsState());
-    }
-  }
-
-  if (!enough_space)
-    return MOJO_RESULT_RESOURCE_EXHAUSTED;
-
-  return MOJO_RESULT_OK;
-}
-
-HandleSignalsState LocalMessagePipeEndpoint::GetHandleSignalsState() const {
-  HandleSignalsState rv;
-  if (!message_queue_.IsEmpty()) {
-    rv.satisfied_signals |= MOJO_HANDLE_SIGNAL_READABLE;
-    rv.satisfiable_signals |= MOJO_HANDLE_SIGNAL_READABLE;
-  }
-  if (is_peer_open_) {
-    rv.satisfied_signals |= MOJO_HANDLE_SIGNAL_WRITABLE;
-    rv.satisfiable_signals |=
-        MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE;
-  }
-  return rv;
-}
-
-MojoResult LocalMessagePipeEndpoint::AddWaiter(
-    Waiter* waiter,
-    MojoHandleSignals signals,
-    uint32_t context,
-    HandleSignalsState* signals_state) {
-  DCHECK(is_open_);
-
-  HandleSignalsState state = GetHandleSignalsState();
-  if (state.satisfies(signals)) {
-    if (signals_state)
-      *signals_state = state;
-    return MOJO_RESULT_ALREADY_EXISTS;
-  }
-  if (!state.can_satisfy(signals)) {
-    if (signals_state)
-      *signals_state = state;
-    return MOJO_RESULT_FAILED_PRECONDITION;
-  }
-
-  waiter_list_.AddWaiter(waiter, signals, context);
-  return MOJO_RESULT_OK;
-}
-
-void LocalMessagePipeEndpoint::RemoveWaiter(Waiter* waiter,
-                                            HandleSignalsState* signals_state) {
-  DCHECK(is_open_);
-  waiter_list_.RemoveWaiter(waiter);
-  if (signals_state)
-    *signals_state = GetHandleSignalsState();
-}
-
-}  // namespace system
-}  // namespace mojo