| /* |
| * Copyright 2022 Google, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef __MEM_SHARED_MEMORY_SERVER_HH__ |
| #define __MEM_SHARED_MEMORY_SERVER_HH__ |
| |
| #include <memory> |
| #include <string> |
| #include <unordered_map> |
| |
| #include "base/pollevent.hh" |
| #include "base/socket.hh" |
| #include "params/SharedMemoryServer.hh" |
| #include "sim/sim_object.hh" |
| #include "sim/system.hh" |
| |
| namespace gem5 |
| { |
| namespace memory |
| { |
| |
| class SharedMemoryServer : public SimObject |
| { |
| public: |
| enum class RequestType : int |
| { |
| kGetPhysRange = 0, |
| }; |
| |
| explicit SharedMemoryServer(const SharedMemoryServerParams& params); |
| ~SharedMemoryServer(); |
| |
| private: |
| class BaseShmPollEvent : public PollEvent |
| { |
| public: |
| BaseShmPollEvent(int fd, SharedMemoryServer* shm_server); |
| |
| const std::string& name() const; |
| |
| protected: |
| bool tryReadAll(void* buffer, size_t size); |
| |
| SharedMemoryServer* shmServer; |
| std::string eventName; |
| }; |
| |
| class ListenSocketEvent : public BaseShmPollEvent |
| { |
| public: |
| using BaseShmPollEvent::BaseShmPollEvent; |
| void process(int revent) override; |
| }; |
| |
| class ClientSocketEvent : public BaseShmPollEvent |
| { |
| public: |
| using BaseShmPollEvent::BaseShmPollEvent; |
| void process(int revent) override; |
| }; |
| |
| System* system; |
| |
| ListenSocketPtr listener; |
| |
| std::unique_ptr<ListenSocketEvent> listenSocketEvent; |
| std::unordered_map<int, std::unique_ptr<ClientSocketEvent>> |
| clientSocketEvents; |
| }; |
| |
| } // namespace memory |
| } // namespace gem5 |
| |
| #endif // __MEM_SHARED_MEMORY_SERVER_HH__ |