1 /*
2 * Copyright (C) 2022 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 #include "service.hpp"
17
18 #include <android-base/logging.h>
19 #include <android/binder_manager.h>
20 #include <android/binder_process.h>
21 #include <utils/Log.h>
22
23 namespace aidl {
24 namespace android {
25 namespace hardware {
26 namespace threadnetwork {
27
Service(void)28 Service::Service(void) : mBinderFd(-1) {
29 binder_status_t status = ABinderProcess_setupPolling(&mBinderFd);
30 CHECK_EQ(status, ::STATUS_OK);
31 CHECK_GE(mBinderFd, 0);
32 }
33
Update(otSysMainloopContext & context)34 void Service::Update(otSysMainloopContext& context) {
35 FD_SET(mBinderFd, &context.mReadFdSet);
36 context.mMaxFd = std::max(context.mMaxFd, mBinderFd);
37 }
38
Process(const otSysMainloopContext & context)39 void Service::Process(const otSysMainloopContext& context) {
40 if (FD_ISSET(mBinderFd, &context.mReadFdSet)) {
41 ABinderProcess_handlePolledCommands();
42 }
43 }
44
startLoop(void)45 void Service::startLoop(void) {
46 const struct timeval kPollTimeout = {1, 0};
47 otSysMainloopContext context;
48 int rval;
49
50 ot::Posix::Mainloop::Manager::Get().Add(*this);
51
52 while (true) {
53 context.mMaxFd = -1;
54 context.mTimeout = kPollTimeout;
55
56 FD_ZERO(&context.mReadFdSet);
57 FD_ZERO(&context.mWriteFdSet);
58 FD_ZERO(&context.mErrorFdSet);
59
60 ot::Posix::Mainloop::Manager::Get().Update(context);
61
62 rval = select(context.mMaxFd + 1, &context.mReadFdSet, &context.mWriteFdSet,
63 &context.mErrorFdSet, &context.mTimeout);
64
65 if (rval >= 0) {
66 ot::Posix::Mainloop::Manager::Get().Process(context);
67 } else if (errno != EINTR) {
68 ALOGE("select() failed: %s", strerror(errno));
69 break;
70 }
71 }
72 }
73 } // namespace threadnetwork
74 } // namespace hardware
75 } // namespace android
76 } // namespace aidl
77