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Joe Onorato5dcbc6c2017-08-29 15:13:58 -07001/*
yro0feae942017-11-15 14:38:48 -08002 * Copyright (C) 2017 The Android Open Source Project
Joe Onorato5dcbc6c2017-08-29 15:13:58 -07003 *
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
Joe Onorato9fc9edf2017-10-15 20:08:52 -070017#include "Log.h"
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070018
Yao Chenef99c4f2017-09-22 16:26:54 -070019#include "StatsService.h"
Joe Onorato9fc9edf2017-10-15 20:08:52 -070020#include "logd/LogReader.h"
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070021
22#include <binder/IInterface.h>
23#include <binder/IPCThreadState.h>
24#include <binder/IServiceManager.h>
25#include <binder/ProcessState.h>
26#include <binder/Status.h>
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070027#include <utils/Looper.h>
28#include <utils/StrongPointer.h>
29
30#include <stdio.h>
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070031#include <sys/stat.h>
Yao Chenef99c4f2017-09-22 16:26:54 -070032#include <sys/types.h>
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070033#include <unistd.h>
34
35using namespace android;
Bookatz906a35c2017-09-20 15:26:44 -070036using namespace android::os::statsd;
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070037
38// ================================================================================
39/**
40 * Thread function data.
41 */
42struct log_reader_thread_data {
43 sp<StatsService> service;
44};
45
46/**
47 * Thread func for where the log reader runs.
48 */
Yao Chenef99c4f2017-09-22 16:26:54 -070049static void* log_reader_thread_func(void* cookie) {
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070050 log_reader_thread_data* data = static_cast<log_reader_thread_data*>(cookie);
51
Joe Onorato9fc9edf2017-10-15 20:08:52 -070052 sp<LogReader> reader = new LogReader(data->service);
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070053
Joe Onorato9fc9edf2017-10-15 20:08:52 -070054 // Tell StatsService that we're ready to go.
55 data->service->Startup();
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070056
Joe Onorato9fc9edf2017-10-15 20:08:52 -070057 // Run the read loop. Never returns.
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070058 reader->Run();
59
60 ALOGW("statsd LogReader.Run() is not supposed to return.");
61
62 delete data;
63 return NULL;
64}
65
66/**
67 * Creates and starts the thread to own the LogReader.
68 */
Yao Chenef99c4f2017-09-22 16:26:54 -070069static status_t start_log_reader_thread(const sp<StatsService>& service) {
Joe Onorato5dcbc6c2017-08-29 15:13:58 -070070 status_t err;
71 pthread_attr_t attr;
72 pthread_t thread;
73
74 // Thread data.
75 log_reader_thread_data* data = new log_reader_thread_data();
76 data->service = service;
77
78 // Create the thread
79 err = pthread_attr_init(&attr);
80 if (err != NO_ERROR) {
81 return err;
82 }
83 // TODO: Do we need to tweak thread priority?
84 err = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
85 if (err != NO_ERROR) {
86 pthread_attr_destroy(&attr);
87 return err;
88 }
89 err = pthread_create(&thread, &attr, log_reader_thread_func, static_cast<void*>(data));
90 if (err != NO_ERROR) {
91 pthread_attr_destroy(&attr);
92 return err;
93 }
94 pthread_attr_destroy(&attr);
95
96 return NO_ERROR;
97}
98
99// ================================================================================
Yao Chenef99c4f2017-09-22 16:26:54 -0700100int main(int /*argc*/, char** /*argv*/) {
Joe Onorato5dcbc6c2017-08-29 15:13:58 -0700101 status_t err;
102
103 // Set up the looper
104 sp<Looper> looper(Looper::prepare(0 /* opts */));
105
106 // Set up the binder
107 sp<ProcessState> ps(ProcessState::self());
Yao Chenef99c4f2017-09-22 16:26:54 -0700108 ps->setThreadPoolMaxThreadCount(1); // everything is oneway, let it queue and save ram
Joe Onorato5dcbc6c2017-08-29 15:13:58 -0700109 ps->startThreadPool();
110 ps->giveThreadPoolName();
111 IPCThreadState::self()->disableBackgroundScheduling(true);
112
113 // Create the service
114 sp<StatsService> service = new StatsService(looper);
115 if (defaultServiceManager()->addService(String16("stats"), service) != 0) {
116 ALOGE("Failed to add service");
117 return -1;
118 }
119
Bookatzb487b552017-09-18 11:26:01 -0700120 // TODO: This line is temporary, since statsd doesn't start up automatically (and therefore
121 // the call in StatsService::SystemRunning() won't ever be called right now).
Joe Onorato9fc9edf2017-10-15 20:08:52 -0700122 // TODO: Are you sure? Don't we need to reconnect to the system process if we get restarted?
123 // --joeo
Bookatzb487b552017-09-18 11:26:01 -0700124 service->sayHiToStatsCompanion();
125
Joe Onorato5dcbc6c2017-08-29 15:13:58 -0700126 // Start the log reader thread
127 err = start_log_reader_thread(service);
128 if (err != NO_ERROR) {
129 return 1;
130 }
131
132 // Loop forever -- the reports run on this thread in a handler, and the
133 // binder calls remain responsive in their pool of one thread.
134 while (true) {
135 looper->pollAll(-1 /* timeoutMillis */);
136 }
137 ALOGW("statsd escaped from its loop.");
138
139 return 1;
140}