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mojo/public/cpp/bindings/lib/connector.cc

Index: mojo/public/cpp/bindings/lib/connector.cc
diff --git a/mojo/public/cpp/bindings/lib/connector.cc b/mojo/public/cpp/bindings/lib/connector.cc
deleted file mode 100644
index d5b054407da048a4f83655dd7644a17ec4321b05..0000000000000000000000000000000000000000
--- a/mojo/public/cpp/bindings/lib/connector.cc
+++ /dev/null
@@ -1,205 +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/public/cpp/bindings/lib/connector.h"
-
-#include "mojo/public/cpp/environment/logging.h"
-#include "mojo/public/cpp/system/macros.h"
-#include "mojo/public/cpp/system/wait.h"
-
-namespace mojo {
-namespace internal {
-
-// ----------------------------------------------------------------------------
-
-Connector::Connector(ScopedMessagePipeHandle message_pipe,
-                     const MojoAsyncWaiter* waiter)
-    : waiter_(waiter),
-      message_pipe_(message_pipe.Pass()),
-      incoming_receiver_(nullptr),
-      async_wait_id_(0),
-      error_(false),
-      drop_writes_(false),
-      enforce_errors_from_incoming_receiver_(true),
-      destroyed_flag_(nullptr) {
-  // Even though we don't have an incoming receiver, we still want to monitor
-  // the message pipe to know if is closed or encounters an error.
-  WaitToReadMore();
-}
-
-Connector::~Connector() {
-  if (destroyed_flag_)
-    *destroyed_flag_ = true;
-
-  CancelWait();
-}
-
-void Connector::CloseMessagePipe() {
-  CancelWait();
-  Close(message_pipe_.Pass());
-}
-
-ScopedMessagePipeHandle Connector::PassMessagePipe() {
-  CancelWait();
-  return message_pipe_.Pass();
-}
-
-bool Connector::WaitForIncomingMessage(MojoDeadline deadline) {
-  if (error_)
-    return false;
-
-  MojoResult rv =
-      Wait(message_pipe_.get(), MOJO_HANDLE_SIGNAL_READABLE, deadline, nullptr);
-  if (rv == MOJO_RESULT_SHOULD_WAIT || rv == MOJO_RESULT_DEADLINE_EXCEEDED)
-    return false;
-  if (rv != MOJO_RESULT_OK) {
-    NotifyError();
-    return false;
-  }
-  ignore_result(ReadSingleMessage(&rv));
-  return (rv == MOJO_RESULT_OK);
-}
-
-bool Connector::Accept(Message* message) {
-  if (error_)
-    return false;
-
-  MOJO_CHECK(message_pipe_.is_valid());
-  if (drop_writes_)
-    return true;
-
-  MojoResult rv =
-      WriteMessageRaw(message_pipe_.get(),
-                      message->data(),
-                      message->data_num_bytes(),
-                      message->mutable_handles()->empty()
-                          ? nullptr
-                          : reinterpret_cast<const MojoHandle*>(
-                                &message->mutable_handles()->front()),
-                      static_cast<uint32_t>(message->mutable_handles()->size()),
-                      MOJO_WRITE_MESSAGE_FLAG_NONE);
-
-  switch (rv) {
-    case MOJO_RESULT_OK:
-      // The handles were successfully transferred, so we don't need the message
-      // to track their lifetime any longer.
-      message->mutable_handles()->clear();
-      break;
-    case MOJO_RESULT_FAILED_PRECONDITION:
-      // There's no point in continuing to write to this pipe since the other
-      // end is gone. Avoid writing any future messages. Hide write failures
-      // from the caller since we'd like them to continue consuming any backlog
-      // of incoming messages before regarding the message pipe as closed.
-      drop_writes_ = true;
-      break;
-    case MOJO_RESULT_BUSY:
-      // We'd get a "busy" result if one of the message's handles is:
-      //   - |message_pipe_|'s own handle;
-      //   - simultaneously being used on another thread; or
-      //   - in a "busy" state that prohibits it from being transferred (e.g.,
-      //     a data pipe handle in the middle of a two-phase read/write,
-      //     regardless of which thread that two-phase read/write is happening
-      //     on).
-      // TODO(vtl): I wonder if this should be a |MOJO_DCHECK()|. (But, until
-      // crbug.com/389666, etc. are resolved, this will make tests fail quickly
-      // rather than hanging.)
-      MOJO_CHECK(false) << "Race condition or other bug detected";
-      return false;
-    default:
-      // This particular write was rejected, presumably because of bad input.
-      // The pipe is not necessarily in a bad state.
-      return false;
-  }
-  return true;
-}
-
-// static
-void Connector::CallOnHandleReady(void* closure, MojoResult result) {
-  Connector* self = static_cast<Connector*>(closure);
-  self->OnHandleReady(result);
-}
-
-void Connector::OnHandleReady(MojoResult result) {
-  MOJO_CHECK(async_wait_id_ != 0);
-  async_wait_id_ = 0;
-  if (result != MOJO_RESULT_OK) {
-    NotifyError();
-    return;
-  }
-  ReadAllAvailableMessages();
-  // At this point, this object might have been deleted. Return.
-}
-
-void Connector::WaitToReadMore() {
-  MOJO_CHECK(!async_wait_id_);
-  async_wait_id_ = waiter_->AsyncWait(message_pipe_.get().value(),
-                                      MOJO_HANDLE_SIGNAL_READABLE,
-                                      MOJO_DEADLINE_INDEFINITE,
-                                      &Connector::CallOnHandleReady,
-                                      this);
-}
-
-bool Connector::ReadSingleMessage(MojoResult* read_result) {
-  bool receiver_result = false;
-
-  // Detect if |this| was destroyed during message dispatch. Allow for the
-  // possibility of re-entering ReadMore() through message dispatch.
-  bool was_destroyed_during_dispatch = false;
-  bool* previous_destroyed_flag = destroyed_flag_;
-  destroyed_flag_ = &was_destroyed_during_dispatch;
-
-  MojoResult rv = ReadAndDispatchMessage(
-      message_pipe_.get(), incoming_receiver_, &receiver_result);
-  if (read_result)
-    *read_result = rv;
-
-  if (was_destroyed_during_dispatch) {
-    if (previous_destroyed_flag)
-      *previous_destroyed_flag = true;  // Propagate flag.
-    return false;
-  }
-  destroyed_flag_ = previous_destroyed_flag;
-
-  if (rv == MOJO_RESULT_SHOULD_WAIT)
-    return true;
-
-  if (rv != MOJO_RESULT_OK ||
-      (enforce_errors_from_incoming_receiver_ && !receiver_result)) {
-    NotifyError();
-    return false;
-  }
-  return true;
-}
-
-void Connector::ReadAllAvailableMessages() {
-  while (!error_) {
-    MojoResult rv;
-
-    // Return immediately if |this| was destroyed. Do not touch any members!
-    if (!ReadSingleMessage(&rv))
-      return;
-
-    if (rv == MOJO_RESULT_SHOULD_WAIT) {
-      WaitToReadMore();
-      break;
-    }
-  }
-}
-
-void Connector::CancelWait() {
-  if (!async_wait_id_)
-    return;
-
-  waiter_->CancelWait(async_wait_id_);
-  async_wait_id_ = 0;
-}
-
-void Connector::NotifyError() {
-  error_ = true;
-  CloseMessagePipe();
-  connection_error_handler_.Run();
-}
-
-}  // namespace internal
-}  // namespace mojo