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Unified Diff: mojo/public/cpp/bindings/lib/interface_impl_internal.h

Issue 728043002: Revert of Update mojo sdk to rev afb4440fd5a10cba980878c326180b7ad7960480 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 1 month ago
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Index: mojo/public/cpp/bindings/lib/interface_impl_internal.h
diff --git a/mojo/public/cpp/bindings/lib/interface_impl_internal.h b/mojo/public/cpp/bindings/lib/interface_impl_internal.h
new file mode 100644
index 0000000000000000000000000000000000000000..492b1822496749d6d68dea24f71fc866d5193a11
--- /dev/null
+++ b/mojo/public/cpp/bindings/lib/interface_impl_internal.h
@@ -0,0 +1,128 @@
+// Copyright 2014 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_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_IMPL_INTERNAL_H_
+#define MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_IMPL_INTERNAL_H_
+
+#include "mojo/public/cpp/bindings/error_handler.h"
+#include "mojo/public/cpp/bindings/interface_ptr.h"
+#include "mojo/public/cpp/bindings/lib/filter_chain.h"
+#include "mojo/public/cpp/bindings/lib/message_header_validator.h"
+#include "mojo/public/cpp/environment/environment.h"
+#include "mojo/public/cpp/environment/logging.h"
+#include "mojo/public/cpp/system/macros.h"
+
+namespace mojo {
+namespace internal {
+
+template <typename Interface>
+class InterfaceImplBase : public Interface {
+ public:
+ virtual ~InterfaceImplBase() {}
+ virtual void OnConnectionEstablished() = 0;
+ virtual void OnConnectionError() = 0;
+};
+
+template <typename Interface>
+class InterfaceImplState : public ErrorHandler {
+ public:
+ typedef typename Interface::Client Client;
+
+ explicit InterfaceImplState(InterfaceImplBase<Interface>* instance)
+ : router_(nullptr),
+ proxy_(nullptr),
+ instance_bound_to_pipe_(false)
+#ifndef NDEBUG
+ ,
+ deleting_instance_due_to_error_(false)
+#endif
+ {
+ MOJO_DCHECK(instance);
+ stub_.set_sink(instance);
+ }
+
+ virtual ~InterfaceImplState() {
+#ifndef NDEBUG
+ MOJO_DCHECK(!instance_bound_to_pipe_ || deleting_instance_due_to_error_);
+#endif
+ delete proxy_;
+ if (router_) {
+ router_->set_error_handler(nullptr);
+ delete router_;
+ }
+ }
+
+ void BindProxy(
+ InterfacePtr<Interface>* ptr,
+ bool instance_bound_to_pipe,
+ const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter()) {
+ MessagePipe pipe;
+ ptr->Bind(pipe.handle0.Pass(), waiter);
+ Bind(pipe.handle1.Pass(), instance_bound_to_pipe, waiter);
+ }
+
+ void Bind(ScopedMessagePipeHandle handle,
+ bool instance_bound_to_pipe,
+ const MojoAsyncWaiter* waiter) {
+ MOJO_CHECK(!router_);
+
+ FilterChain filters;
+ filters.Append<MessageHeaderValidator>();
+ filters.Append<typename Interface::RequestValidator_>();
+ filters.Append<typename Interface::Client::ResponseValidator_>();
+
+ router_ = new Router(handle.Pass(), filters.Pass(), waiter);
+ router_->set_incoming_receiver(&stub_);
+ router_->set_error_handler(this);
+
+ proxy_ = new typename Client::Proxy_(router_);
+
+ instance_bound_to_pipe_ = instance_bound_to_pipe;
+
+ instance()->OnConnectionEstablished();
+ }
+
+ bool WaitForIncomingMethodCall() {
+ MOJO_DCHECK(router_);
+ return router_->WaitForIncomingMessage();
+ }
+
+ Router* router() { return router_; }
+ Client* client() { return proxy_; }
+
+ private:
+ InterfaceImplBase<Interface>* instance() {
+ return static_cast<InterfaceImplBase<Interface>*>(stub_.sink());
+ }
+
+ virtual void OnConnectionError() override {
+ // If the the instance is not bound to the pipe, the instance might choose
+ // to delete itself in the OnConnectionError handler, which would in turn
+ // delete this. Save the error behavior before invoking the error handler
+ // so we can correctly decide what to do.
+ bool bound = instance_bound_to_pipe_;
+ instance()->OnConnectionError();
+ if (!bound)
+ return;
+#ifndef NDEBUG
+ deleting_instance_due_to_error_ = true;
+#endif
+ delete instance();
+ }
+
+ Router* router_;
+ typename Client::Proxy_* proxy_;
+ typename Interface::Stub_ stub_;
+ bool instance_bound_to_pipe_;
+#ifndef NDEBUG
+ bool deleting_instance_due_to_error_;
+#endif
+
+ MOJO_DISALLOW_COPY_AND_ASSIGN(InterfaceImplState);
+};
+
+} // namespace internal
+} // namespace mojo
+
+#endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_IMPL_INTERNAL_H_
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