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 <sys/time.h>
21 #include <chrono>
22 #include <optional>
23 #include <string>
24
25 #ifdef __BIONIC__
26 #include <android-base/logging.h>
27
28 #include <vsockinfo.h>
29 #endif // __BIONIC__
30
31 namespace android {
32 namespace hardware {
33 namespace automotive {
34 namespace vehicle {
35 namespace V2_0 {
36 namespace impl {
37
38 template <class duration_t>
TimeValFromChronoDuration(duration_t duration)39 constexpr struct timeval TimeValFromChronoDuration(duration_t duration) {
40 using std::micro;
41 using std::chrono::duration_cast;
42 using std::chrono::microseconds;
43 using std::chrono::seconds;
44 return {
45 .tv_sec = static_cast<time_t>(duration_cast<seconds>(duration).count()),
46 .tv_usec = static_cast<suseconds_t>(duration_cast<microseconds>(duration).count() %
47 micro::den),
48 };
49 }
50
51 // True means fd is ready, False means timeout
52 bool WaitForReadWithTimeout(int fd, struct timeval&& timeout);
53
54 // True means fd is ready, False means timeout
55 template <class duration_t>
WaitForReadWithTimeout(int fd,duration_t timeout)56 bool WaitForReadWithTimeout(int fd, duration_t timeout) {
57 return WaitForReadWithTimeout(fd, TimeValFromChronoDuration(timeout));
58 }
59
60 struct VirtualizedVhalServerInfo {
61 #ifdef __BIONIC__
62 android::hardware::automotive::utils::VsockConnectionInfo vsock;
63 #else
64 struct {
65 unsigned cid = 0;
66 unsigned port = 0;
67 } vsock;
68 #endif
69
70 std::string powerStateMarkerFilePath;
71 std::string powerStateSocket;
72
73 static std::optional<VirtualizedVhalServerInfo> fromCommandLine(int argc, char* argv[],
74 std::string* error);
75
76 #ifdef __BIONIC__
77 static std::optional<VirtualizedVhalServerInfo> fromRoPropertyStore();
78 #endif
79
80 std::string getServerUri() const;
81 };
82
83 } // namespace impl
84 } // namespace V2_0
85 } // namespace vehicle
86 } // namespace automotive
87 } // namespace hardware
88 } // namespace android
89
90 #endif // android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
91