Add CompositeMachMessageServer and its test

util/mach/exc_server_variants.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #ifndef CRASHPAD_UTIL_MACH_EXC_SERVER_VARIANTS_H_
 #define CRASHPAD_UTIL_MACH_EXC_SERVER_VARIANTS_H_
 
 #include <mach/mach.h>
 
+#include <set>
+
 #include "build/build_config.h"
 #include "util/mach/mach_message_server.h"
 
 namespace crashpad {
 
 // Routines to provide a single unified front-end to the interfaces in
 // <mach/exc.defs> and <mach/mach_exc.defs>. The two interfaces are identical,
 // except that the latter allows for 64-bit exception codes, and is requested by
 // setting the MACH_EXCEPTION_CODES behavior bit associated with an exception
 // port.
@@ skipping 81 matching lines @@
   //!
   //! \param[in] interface The interface to dispatch requests to. Weak.
   explicit ExcServer(Interface* interface);
 
   // MachMessageServer::Interface:
 
   bool MachMessageServerFunction(const mach_msg_header_t* in_header,
                                  mach_msg_header_t* out_header,
                                  bool* destroy_complex_request) override;
 
+  std::set<mach_msg_id_t> MachMessageServerRequestIDs() override;
+
   mach_msg_size_t MachMessageServerRequestSize() override;
   mach_msg_size_t MachMessageServerReplySize() override;
 
  private:
   Interface* interface_;  // weak
 
   DISALLOW_COPY_AND_ASSIGN(ExcServer);
 };
 
 //! \brief A server interface for the `mach_exc` Mach subsystem.
@@ skipping 79 matching lines @@
   //!
   //! \param[in] interface The interface to dispatch requests to. Weak.
   explicit MachExcServer(Interface* interface);
 
   // MachMessageServer::Interface:
 
   bool MachMessageServerFunction(const mach_msg_header_t* in_header,
                                  mach_msg_header_t* out_header,
                                  bool* destroy_complex_request) override;
 
+  std::set<mach_msg_id_t> MachMessageServerRequestIDs() override;
+
   mach_msg_size_t MachMessageServerRequestSize() override;
   mach_msg_size_t MachMessageServerReplySize() override;
 
  private:
   Interface* interface_;  // weak
 
   DISALLOW_COPY_AND_ASSIGN(MachExcServer);
 };
 
 //! \brief A server interface for the `exc` Mach subsystem, simplified to have
@@ skipping 246 matching lines @@
   //!
   //! \param[in] interface The interface to dispatch requests to. Weak.
   explicit UniversalMachExcServer(Interface* interface);
 
   // MachMessageServer::Interface:
 
   bool MachMessageServerFunction(const mach_msg_header_t* in_header,
                                  mach_msg_header_t* out_header,
                                  bool* destroy_complex_request) override;
 
+  std::set<mach_msg_id_t> MachMessageServerRequestIDs() override;
+
   mach_msg_size_t MachMessageServerRequestSize() override;
   mach_msg_size_t MachMessageServerReplySize() override;
 
   // internal::SimplifiedExcServer::Interface:
 
   kern_return_t CatchException(exception_behavior_t behavior,
                                exception_handler_t exception_port,
                                thread_t thread,
                                task_t task,
                                exception_type_t exception,
@@ skipping 112 matching lines @@
 //!     \a behavior is not a state-carrying behavior, or when it is a
 //!     state-carrying behavior and \a set_thread_state is `true`.
 //!     `MACH_RCV_PORT_DIED` is used when \a behavior is a state-carrying
 //!     behavior and \a set_thread_state is `false`.
 kern_return_t ExcServerSuccessfulReturnValue(exception_behavior_t behavior,
                                              bool set_thread_state);
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_MACH_EXC_SERVER_VARIANTS_H_