1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
18 #define android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
19
20 #include <chrono>
21 #include <optional>
22 #include <string>
23
24 #ifdef __BIONIC__
25 #include <android-base/logging.h>
26
27 #include <vsockinfo.h>
28 #endif // __BIONIC__
29
30 namespace android {
31 namespace hardware {
32 namespace automotive {
33 namespace vehicle {
34 namespace V2_0 {
35 namespace impl {
36
37 template <class duration_t>
TimeValFromChronoDuration(duration_t duration)38 constexpr struct timeval TimeValFromChronoDuration(duration_t duration) {
39 using std::micro;
40 using std::chrono::duration_cast;
41 using std::chrono::microseconds;
42 using std::chrono::seconds;
43 return {
44 .tv_sec = static_cast<time_t>(duration_cast<seconds>(duration).count()),
45 .tv_usec = static_cast<suseconds_t>(duration_cast<microseconds>(duration).count() %
46 micro::den),
47 };
48 }
49
50 // True means fd is ready, False means timeout
51 bool WaitForReadWithTimeout(int fd, struct timeval&& timeout);
52
53 // True means fd is ready, False means timeout
54 template <class duration_t>
WaitForReadWithTimeout(int fd,duration_t timeout)55 bool WaitForReadWithTimeout(int fd, duration_t timeout) {
56 return WaitForReadWithTimeout(fd, TimeValFromChronoDuration(timeout));
57 }
58
59 struct VirtualizedVhalServerInfo {
60 #ifdef __BIONIC__
61 android::hardware::automotive::utils::VsockConnectionInfo vsock;
62 #else
63 struct {
64 unsigned cid = 0;
65 unsigned port = 0;
66 } vsock;
67 #endif
68
69 std::string powerStateMarkerFilePath;
70 std::string powerStateSocket;
71
72 static std::optional<VirtualizedVhalServerInfo> fromCommandLine(int argc, char* argv[],
73 std::string* error);
74
75 #ifdef __BIONIC__
76 static std::optional<VirtualizedVhalServerInfo> fromRoPropertyStore();
77 #endif
78
79 std::string getServerUri() const;
80 };
81
82 } // namespace impl
83 } // namespace V2_0
84 } // namespace vehicle
85 } // namespace automotive
86 } // namespace hardware
87 } // namespace android
88
89 #endif // android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
90