博客地址:http://blog.csdn.net/droyon/article/details/45622037
dumpsys 常用操作以及实现的来龙去脉.
一,常用操作:
1,在Activity中,可重写dump函数,实现打印,可通过如下命令获取输出:
adb shell dumpsys activity <activity_component_name>2,在Service的子类中,可重写dump函数,使用如下命令实现命令输出:
adb shell dumpsys activity service <yourservicename>3,在ContentProvider,重写dump,使用如下命令进行命令输出:
adb shell dumpsys activity provider <provider_component_name>二,dumpsys 源码分析.转:http://blog.csdn.net/kevinx_xu/article/details/11846289
frameworks\native\cmds\dumpsys\dumpsys.cpp
int main(int argc, char* const argv[])
{
signal(SIGPIPE, SIG_IGN);
//取得ServiceManager服务的远程Binder代理对象
sp<IServiceManager> sm = defaultServiceManager();
fflush(stdout);
if (sm == NULL) {
ALOGE("Unable to get default service manager!");
aerr << "dumpsys: Unable to get default service manager!" << endl;
return 20;
}
Vector<String16> services;
Vector<String16> args;
//如果命令行参数只有1个
if (argc == 1) {
//使用ServiceManager服务的Binder远程代理对象查询所有的服务
services = sm->listServices();
services.sort(sort_func);
args.add(String16("-a"));
} else {
//添加命令行指定的服务及参数
services.add(String16(argv[1]));
for (int i=2; i<argc; i++) {
args.add(String16(argv[i]));
}
}
//根据服务名称查找服务对应的Binder代理对象，如果存在，打印该服务
const size_t N = services.size();
if (N > 1) {
// first print a list of the current services
aout << "Currently running services:" << endl;
for (size_t i=0; i<N; i++) {
sp<IBinder> service = sm->checkService(services[i]);
if (service != NULL) {
aout << " " << services[i] << endl;
}
}
}
//调用服务的dump函数打印服务相关信息
for (size_t i=0; i<N; i++) {
sp<IBinder> service = sm->checkService(services[i]);
if (service != NULL) {
if (N > 1) {
aout << "------------------------------------------------------------"
"-------------------" << endl;
aout << "DUMP OF SERVICE " << services[i] << ":" << endl;
}
int err = service->dump(STDOUT_FILENO, args);
if (err != 0) {
aerr << "Error dumping service info: (" << strerror(err)
<< ") " << services[i] << endl;
}
} else {
aerr << "Can‘t find service: " << services[i] << endl;
}
}
return 0;
} 三,从2中可知,dumpsys打印输出SystemService 中的dump函数,或者说Binder中的dump.那么我们系统中有那些Binder,Binder注册的名称又是什么,可通过如下命令来获知:
service list:
输出如下:
Found 109 services:
0 phoneEx: [com.mediatek.internal.telephony.ITelephonyEx]
1 phone: [com.android.internal.telephony.ITelephony]
2 isms: [com.android.internal.telephony.ISms]
3 iphonesubinfo: [com.android.internal.telephony.IPhoneSubInfo]
4 simphonebook: [com.android.internal.telephony.IIccPhoneBook]
5 isub: [com.android.internal.telephony.ISub]
6 telecom: [com.android.internal.telecom.ITelecomService]
7 imms: [com.android.internal.telephony.IMms]
8 media_projection: [android.media.projection.IMediaProjectionManager]
9 mtkhdmi: [com.mediatek.hdmi.IMtkHdmiManager]
10 mtk-perfservice: [com.mediatek.perfservice.IPerfService]
11 launcherapps: [android.content.pm.ILauncherApps]
12 fingerprint: [android.service.fingerprint.IFingerprintService]
13 trust: [android.app.trust.ITrustManager]
14 media_router: [android.media.IMediaRouterService]
15 media_session: [android.media.session.ISessionManager]
16 restrictions: [android.content.IRestrictionsManager]
17 print: [android.print.IPrintManager]
18 assetatlas: [android.view.IAssetAtlas]
19 dreams: [android.service.dreams.IDreamManager]
20 commontime_management: []
21 samplingprofiler: []
22 diskstats: []
23 voiceinteraction: [com.android.internal.app.IVoiceInteractionManagerService]
24 appwidget: [com.android.internal.appwidget.IAppWidgetService]
25 backup: [android.app.backup.IBackupManager]
26 jobscheduler: [android.app.job.IJobScheduler]
27 uimode: [android.app.IUiModeManager]
28 serial: [android.hardware.ISerialManager]
29 usb: [android.hardware.usb.IUsbManager]
30 DockObserver: []
31 audio: [android.media.IAudioService]
32 wallpaper: [android.app.IWallpaperManager]
33 dropbox: [com.android.internal.os.IDropBoxManagerService]
34 search_engine: [com.mediatek.search.ISearchEngineManagerService]
35 search: [android.app.ISearchManager]
36 country_detector: [android.location.ICountryDetector]
37 location: [android.location.ILocationManager]
38 devicestoragemonitor: []
39 notification: [android.app.INotificationManager]
40 updatelock: [android.os.IUpdateLock]
41 servicediscovery: [android.net.nsd.INsdManager]
42 connectivity: [android.net.IConnectivityManager]
43 rttmanager: [android.net.wifi.IRttManager]
44 wifiscanner: [android.net.wifi.IWifiScanner]
45 wifi: [android.net.wifi.IWifiManager]
46 wifip2p: [android.net.wifi.p2p.IWifiP2pManager]
47 netpolicy: [android.net.INetworkPolicyManager]
48 netstats: [android.net.INetworkStatsService]
49 network_score: [android.net.INetworkScoreService]
50 textservices: [com.android.internal.textservice.ITextServicesManager]
51 network_management: [android.os.INetworkManagementService]
52 clipboard: [android.content.IClipboard]
53 statusbar: [com.android.internal.statusbar.IStatusBarService]
54 device_policy: [android.app.admin.IDevicePolicyManager]
55 lock_settings: [com.android.internal.widget.ILockSettings]
56 mount: [IMountService]
57 leuiphonebind: [com.letv.leui.os.phonebind.IPhoneBind]
58 accessibility: [android.view.accessibility.IAccessibilityManager]
59 input_method: [com.android.internal.view.IInputMethodManager]
60 bluetooth_manager: [android.bluetooth.IBluetoothManager]
61 input: [android.hardware.input.IInputManager]
62 window: [android.view.IWindowManager]
63 alarm: [android.app.IAlarmManager]
64 consumer_ir: [android.hardware.IConsumerIrService]
65 vibrator: [android.os.IVibratorService]
66 mobile: [com.mediatek.common.mom.IMobileManagerService]
67 content: [android.content.IContentService]
68 account: [android.accounts.IAccountManager]
69 entropy: []
70 telephony.registry: [com.android.internal.telephony.ITelephonyRegistry]
71 scheduling_policy: [android.os.ISchedulingPolicyService]
72 webviewupdate: [android.webkit.IWebViewUpdateService]
73 usagestats: [android.app.usage.IUsageStatsManager]
74 battery: []
75 hardware: [android.os.IHardwareService]
76 anrmanager: [android.app.IANRManager]
77 permission: [android.os.IPermissionController]
78 cpuinfo: []
79 dbinfo: []
80 bginfo: []
81 gfxinfo: []
82 meminfo: []
83 procstats: [com.android.internal.app.IProcessStats]
84 activity: [android.app.IActivityManager]
85 user: [android.os.IUserManager]
86 package: [android.content.pm.IPackageManager]
87 recovery: [com.mediatek.recovery.IRecoveryManagerService]
88 display: [android.hardware.display.IDisplayManager]
89 power: [android.os.IPowerManager]
90 appops: [com.android.internal.app.IAppOpsService]
91 batterystats: [com.android.internal.app.IBatteryStats]
92 sensorservice: [android.gui.SensorServer]
93 media.mmsdk: [android.media.IMMSdkService]
94 media.sound_trigger_hw: [android.hardware.ISoundTriggerHwService]
95 media.audio_policy: [android.media.IAudioPolicyService]
96 SurfaceFlinger: [android.ui.ISurfaceComposer]
97 media.camera: [android.hardware.ICameraService]
98 drm.drmManager: [drm.IDrmManagerService]
99 AAL: [AALService]
100 memory_dumper: [android.memory.IMemoryDumper]
101 media.player: [android.media.IMediaPlayerService]
102 media.audio_flinger: [android.media.IAudioFlinger]
103 batteryproperties: [android.os.IBatteryPropertiesRegistrar]
104 GuiExtService: [GuiExtService]
105 android.security.keystore: [android.security.keystore]
106 PPLAgent: []
107 NvRAMAgent: [NvRAMAgent]
108 mtk.codecservice: []由上可知,1中的adb shell dumpsys activity 之所以能够使用,是因为activity: [android.app.IActivityManager],并且之后可跟Intent或者Service,是因为ActivityManagerService在dump函数中重写实现的.
} else if ("provider".equals(cmd)) {
String[] newArgs;
String name;
if (opti >= args.length) {
name = null;
newArgs = EMPTY_STRING_ARRAY;
} else {
name = args[opti];
opti++;
newArgs = new String[args.length - opti];
if (args.length > 2) System.arraycopy(args, opti, newArgs, 0, args.length - opti);
}
if (!dumpProvider(fd, pw, name, newArgs, 0, dumpAll)) {
pw.println("No providers match: " + name);
pw.println("Use -h for help.");
}
} else if ("providers".equals(cmd) || "prov".equals(cmd)) {
synchronized (this) {
dumpProvidersLocked(fd, pw, args, opti, true, null);
}
} else if ("service".equals(cmd)) {
String[] newArgs;
String name;
if (opti >= args.length) {
name = null;
newArgs = EMPTY_STRING_ARRAY;
} else {
name = args[opti];
opti++;
newArgs = new String[args.length - opti];
if (args.length > 2) System.arraycopy(args, opti, newArgs, 0,
args.length - opti);
}
if (!mServices.dumpService(fd, pw, name, newArgs, 0, dumpAll)) {
pw.println("No services match: " + name);
pw.println("Use -h for help.");
}
} else if ("package".equals(cmd)) {
String[] newArgs;
if (opti >= args.length) {
pw.println("package: no package name原文地址：http://blog.csdn.net/droyon/article/details/45622037
