Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add ClientState for handling the crash of clients.

Browse Source 
Bug: 15054040
Change-Id: I4dd8d1c350186fe705daa20c9944bc8e4dd556c2
This commit is contained in:
Sungsoo Lim
2014-05-14 09:21:08 +09:00
parent becab9a7db
commit 72ad7bf915
1 changed files with 136 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

179
services/core/java/com/android/server/tv/TvInputManagerService.java
View File

@@ -204,11 +204,13 @@ public final class TvInputManagerService extends SystemService {
Slog.e(TAG, "error in unregisterCallback", e);
}
}
serviceState.mClients.clear();
serviceState.mClientTokens.clear();
mContext.unbindService(serviceState.mConnection);
}
userState.serviceStateMap.clear();
userState.clientStateMap.clear();
mUserStates.remove(userId);
}
}
@@ -273,7 +275,7 @@ public final class TvInputManagerService extends SystemService {
}
serviceState.mReconnecting = false;
}
boolean isStateEmpty = serviceState.mClients.isEmpty()
boolean isStateEmpty = serviceState.mClientTokens.isEmpty()
&& serviceState.mSessionTokens.isEmpty();
if (serviceState.mService == null && !isStateEmpty && userId == mCurrentUserId) {
// This means that the service is not yet connected but its state indicates that we
@@ -304,10 +306,22 @@ public final class TvInputManagerService extends SystemService {
}
}
private ClientState createClientStateLocked(IBinder clientToken, int userId) {
UserState userState = getUserStateLocked(userId);
ClientState clientState = new ClientState(clientToken, userId);
try {
clientToken.linkToDeath(clientState, 0);
} catch (RemoteException e) {
Slog.e(TAG, "Client is already died.");
}
userState.clientStateMap.put(clientToken, clientState);
return clientState;
}
private void createSessionInternalLocked(ITvInputService service, final IBinder sessionToken,
final int userId) {
final SessionState sessionState =
getUserStateLocked(userId).sessionStateMap.get(sessionToken);
final UserState userState = getUserStateLocked(userId);
final SessionState sessionState = userState.sessionStateMap.get(sessionToken);
if (DEBUG) {
Slog.d(TAG, "createSessionInternalLocked(inputId=" + sessionState.mInputId + ")");
}
@@ -333,6 +347,14 @@ public final class TvInputManagerService extends SystemService {
} catch (RemoteException e) {
Slog.e(TAG, "Session is already died.");
}
IBinder clientToken = sessionState.mClient.asBinder();
ClientState clientState = userState.clientStateMap.get(clientToken);
if (clientState == null) {
clientState = createClientStateLocked(clientToken, userId);
}
clientState.mSessionTokens.add(sessionState.mSessionToken);
sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId,
sessionToken, channels[0], sessionState.mSeq, userId);
}
@@ -423,7 +445,16 @@ public final class TvInputManagerService extends SystemService {
mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args).sendToTarget();
}
// Also remove the session token from the session token list of the current service.
// Also remove the session token from the session token list of the current client and
// service.
ClientState clientState = userState.clientStateMap.get(sessionState.mClient.asBinder());
if (clientState != null) {
clientState.mSessionTokens.remove(sessionToken);
if (clientState.isEmpty()) {
userState.clientStateMap.remove(sessionState.mClient.asBinder());
}
}
ServiceState serviceState = userState.serviceStateMap.get(sessionState.mInputId);
if (serviceState != null) {
serviceState.mSessionTokens.remove(sessionToken);
@@ -431,11 +462,45 @@ public final class TvInputManagerService extends SystemService {
updateServiceConnectionLocked(sessionState.mInputId, userId);
}
private void unregisterCallbackInternalLocked(IBinder clientToken, String inputId,
int userId) {
UserState userState = getUserStateLocked(userId);
ClientState clientState = userState.clientStateMap.get(clientToken);
if (clientState != null) {
clientState.mInputIds.remove(inputId);
if (clientState.isEmpty()) {
userState.clientStateMap.remove(clientToken);
}
}
ServiceState serviceState = userState.serviceStateMap.get(inputId);
if (serviceState == null) {
return;
}
// Remove this client from the client list and unregister the callback.
serviceState.mClientTokens.remove(clientToken);
if (!serviceState.mClientTokens.isEmpty()) {
// We have other clients who want to keep the callback. Do this later.
return;
}
if (serviceState.mService == null || serviceState.mCallback == null) {
return;
}
try {
serviceState.mService.unregisterCallback(serviceState.mCallback);
} catch (RemoteException e) {
Slog.e(TAG, "error in unregisterCallback", e);
} finally {
serviceState.mCallback = null;
updateServiceConnectionLocked(inputId, userId);
}
}
private void broadcastServiceAvailabilityChangedLocked(ServiceState serviceState) {
for (IBinder iBinder : serviceState.mClients) {
ITvInputClient client = ITvInputClient.Stub.asInterface(iBinder);
for (IBinder clientToken : serviceState.mClientTokens) {
try {
client.onAvailabilityChanged(
ITvInputClient.Stub.asInterface(clientToken).onAvailabilityChanged(
serviceState.mTvInputInfo.getId(), serviceState.mAvailable);
} catch (RemoteException e) {
Slog.e(TAG, "error in onAvailabilityChanged", e);
@@ -498,10 +563,19 @@ public final class TvInputManagerService extends SystemService {
userState.inputMap.get(inputId), resolvedUserId);
userState.serviceStateMap.put(inputId, serviceState);
}
IBinder iBinder = client.asBinder();
if (!serviceState.mClients.contains(iBinder)) {
serviceState.mClients.add(iBinder);
IBinder clientToken = client.asBinder();
if (!serviceState.mClientTokens.contains(clientToken)) {
serviceState.mClientTokens.add(clientToken);
}
ClientState clientState = userState.clientStateMap.get(clientToken);
if (clientState == null) {
clientState = createClientStateLocked(clientToken, resolvedUserId);
}
if (!clientState.mInputIds.contains(inputId)) {
clientState.mInputIds.add(inputId);
}
if (serviceState.mService != null) {
if (serviceState.mCallback != null) {
// We already handled.
@@ -529,29 +603,7 @@ public final class TvInputManagerService extends SystemService {
final long identity = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
UserState userState = getUserStateLocked(resolvedUserId);
ServiceState serviceState = userState.serviceStateMap.get(inputId);
if (serviceState == null) {
return;
}
// Remove this client from the client list and unregister the callback.
serviceState.mClients.remove(client.asBinder());
if (!serviceState.mClients.isEmpty()) {
// We have other clients who want to keep the callback. Do this later.
return;
}
if (serviceState.mService == null || serviceState.mCallback == null) {
return;
}
try {
serviceState.mService.unregisterCallback(serviceState.mCallback);
} catch (RemoteException e) {
Slog.e(TAG, "error in unregisterCallback", e);
} finally {
serviceState.mCallback = null;
updateServiceConnectionLocked(inputId, resolvedUserId);
}
unregisterCallbackInternalLocked(client.asBinder(), inputId, resolvedUserId);
}
} finally {
Binder.restoreCallingIdentity(identity);
@@ -582,8 +634,8 @@ public final class TvInputManagerService extends SystemService {
// Create a new session token and a session state.
IBinder sessionToken = new Binder();
SessionState sessionState = new SessionState(
sessionToken, inputId, client, seq, callingUid, resolvedUserId);
SessionState sessionState = new SessionState(sessionToken, inputId, client,
seq, callingUid, resolvedUserId);
// Add them to the global session state map of the current user.
userState.sessionStateMap.put(sessionToken, sessionState);
@@ -835,6 +887,10 @@ public final class TvInputManagerService extends SystemService {
// A mapping from the TV input id to its TvInputInfo.
private final Map<String, TvInputInfo> inputMap = new HashMap<String,TvInputInfo>();
// A mapping from the token of a client to its state.
private final Map<IBinder, ClientState> clientStateMap =
new HashMap<IBinder, ClientState>();
// A mapping from the name of a TV input service to its state.
private final Map<String, ServiceState> serviceStateMap =
new HashMap<String, ServiceState>();
@@ -844,9 +900,46 @@ public final class TvInputManagerService extends SystemService {
new HashMap<IBinder, SessionState>();
}
private final class ClientState implements IBinder.DeathRecipient {
private final List<String> mInputIds = new ArrayList<String>();
private final List<IBinder> mSessionTokens = new ArrayList<IBinder>();
private IBinder mClientToken;
private final int mUserId;
ClientState(IBinder clientToken, int userId) {
mClientToken = clientToken;
mUserId = userId;
}
public boolean isEmpty() {
return mInputIds.isEmpty() && mSessionTokens.isEmpty();
}
@Override
public void binderDied() {
synchronized (mLock) {
UserState userState = getUserStateLocked(mUserId);
// DO NOT remove the client state of clientStateMap in this method. It will be
// removed in releaseSessionLocked() or unregisterCallbackInternalLocked().
ClientState clientState = userState.clientStateMap.get(mClientToken);
if (clientState != null) {
while (clientState.mSessionTokens.size() > 0) {
releaseSessionLocked(
clientState.mSessionTokens.get(0), Process.SYSTEM_UID, mUserId);
}
while (clientState.mInputIds.size() > 0) {
unregisterCallbackInternalLocked(
mClientToken, clientState.mInputIds.get(0), mUserId);
}
}
mClientToken = null;
}
}
}
private final class ServiceState {
// TODO: need to implement DeathRecipient for clients.
private final List<IBinder> mClients = new ArrayList<IBinder>();
private final List<IBinder> mClientTokens = new ArrayList<IBinder>();
private final List<IBinder> mSessionTokens = new ArrayList<IBinder>();
private final ServiceConnection mConnection;
private final TvInputInfo mTvInputInfo;
@@ -869,13 +962,13 @@ public final class TvInputManagerService extends SystemService {
private final int mSeq;
private final int mCallingUid;
private final int mUserId;
private final IBinder mToken;
private final IBinder mSessionToken;
private ITvInputSession mSession;
private Uri mLogUri;
private SessionState(IBinder token, String inputId, ITvInputClient client, int seq,
private SessionState(IBinder sessionToken, String inputId, ITvInputClient client, int seq,
int callingUid, int userId) {
mToken = token;
mSessionToken = sessionToken;
mInputId = inputId;
mClient = client;
mSeq = seq;
@@ -894,7 +987,7 @@ public final class TvInputManagerService extends SystemService {
Slog.e(TAG, "error in onSessionReleased", e);
}
}
removeSessionStateLocked(mToken, mUserId);
removeSessionStateLocked(mSessionToken, mUserId);
}
}
}
@@ -918,7 +1011,7 @@ public final class TvInputManagerService extends SystemService {
serviceState.mService = ITvInputService.Stub.asInterface(service);
// Register a callback, if we need to.
if (!serviceState.mClients.isEmpty() && serviceState.mCallback == null) {
if (!serviceState.mClientTokens.isEmpty() && serviceState.mCallback == null) {
serviceState.mCallback = new ServiceCallback(mUserId);
try {
serviceState.mService.registerCallback(serviceState.mCallback);