1 #pragma once 2 /* 3 * Copyright (C) 2017 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #include <inttypes.h> 19 #include <map> 20 #include <memory> 21 #include <string> 22 #include <vector> 23 24 #include "common/libs/fs/shared_fd.h" 25 #include "uapi/vsoc_shm.h" 26 27 namespace ivserver { 28 29 class VSoCSharedMemory { 30 public: 31 // Region describes a VSoCSharedMem region. 32 struct Region { 33 Region() = default; 34 explicit Region(const char *device_name, const cvd::SharedFD &host_fd, 35 const cvd::SharedFD &guest_fd) 36 : device_name(device_name), host_fd(host_fd), guest_fd(guest_fd) {} 37 const char *device_name; 38 cvd::SharedFD host_fd; 39 cvd::SharedFD guest_fd; 40 }; 41 42 VSoCSharedMemory() = default; 43 virtual ~VSoCSharedMemory() = default; 44 45 static std::unique_ptr<VSoCSharedMemory> New(const std::string &name); 46 47 virtual bool GetEventFdPairForRegion(const std::string ®ion_name, 48 cvd::SharedFD *guest_to_host, 49 cvd::SharedFD *host_to_guest) const = 0; 50 51 virtual const cvd::SharedFD &SharedMemFD() const = 0; 52 virtual const std::vector<Region> &Regions() const = 0; 53 54 private: 55 VSoCSharedMemory(const VSoCSharedMemory &) = delete; 56 VSoCSharedMemory &operator=(const VSoCSharedMemory &other) = delete; 57 }; 58 59 } // namespace ivserver 60
