1 /*
2 * Copyright (C) 2017 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 #include <mutex>
18 #include <unistd.h>
19
20 #include <binder/ActivityManager.h>
21 #include <binder/Binder.h>
22 #include <binder/IServiceManager.h>
23
24 #include <utils/SystemClock.h>
25
26 namespace android {
27
ActivityManager()28 ActivityManager::ActivityManager()
29 {
30 }
31
getService()32 sp<IActivityManager> ActivityManager::getService()
33 {
34 std::lock_guard<Mutex> scoped_lock(mLock);
35 int64_t startTime = 0;
36 sp<IActivityManager> service = mService;
37 while (service == NULL || !IInterface::asBinder(service)->isBinderAlive()) {
38 sp<IBinder> binder = defaultServiceManager()->checkService(String16("activity"));
39 if (binder == NULL) {
40 // Wait for the activity service to come back...
41 if (startTime == 0) {
42 startTime = uptimeMillis();
43 ALOGI("Waiting for activity service");
44 } else if ((uptimeMillis() - startTime) > 1000000) {
45 ALOGW("Waiting too long for activity service, giving up");
46 service = NULL;
47 break;
48 }
49 usleep(25000);
50 } else {
51 service = interface_cast<IActivityManager>(binder);
52 mService = service;
53 }
54 }
55 return service;
56 }
57
openContentUri(const String16 & stringUri)58 int ActivityManager::openContentUri(const String16& stringUri)
59 {
60 sp<IActivityManager> service = getService();
61 return service != NULL ? service->openContentUri(stringUri) : -1;
62 }
63
registerUidObserver(const sp<IUidObserver> & observer,const int32_t event,const int32_t cutpoint,const String16 & callingPackage)64 void ActivityManager::registerUidObserver(const sp<IUidObserver>& observer,
65 const int32_t event,
66 const int32_t cutpoint,
67 const String16& callingPackage)
68 {
69 sp<IActivityManager> service = getService();
70 if (service != NULL) {
71 service->registerUidObserver(observer, event, cutpoint, callingPackage);
72 }
73 }
74
unregisterUidObserver(const sp<IUidObserver> & observer)75 void ActivityManager::unregisterUidObserver(const sp<IUidObserver>& observer)
76 {
77 sp<IActivityManager> service = getService();
78 if (service != NULL) {
79 service->unregisterUidObserver(observer);
80 }
81 }
82
isUidActive(const uid_t uid,const String16 & callingPackage)83 bool ActivityManager::isUidActive(const uid_t uid, const String16& callingPackage)
84 {
85 sp<IActivityManager> service = getService();
86 if (service != NULL) {
87 return service->isUidActive(uid, callingPackage);
88 }
89 return false;
90 }
91
linkToDeath(const sp<IBinder::DeathRecipient> & recipient)92 status_t ActivityManager::linkToDeath(const sp<IBinder::DeathRecipient>& recipient) {
93 sp<IActivityManager> service = getService();
94 if (service != NULL) {
95 return IInterface::asBinder(service)->linkToDeath(recipient);
96 }
97 return INVALID_OPERATION;
98 }
99
unlinkToDeath(const sp<IBinder::DeathRecipient> & recipient)100 status_t ActivityManager::unlinkToDeath(const sp<IBinder::DeathRecipient>& recipient) {
101 sp<IActivityManager> service = getService();
102 if (service != NULL) {
103 return IInterface::asBinder(service)->unlinkToDeath(recipient);
104 }
105 return INVALID_OPERATION;
106 }
107
108 }; // namespace android
109