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Commit 0559589b authored by Eric Laurent's avatar Eric Laurent
Browse files

Activity manager: native callback for process state 

Make getUidProcessState() callback in IActivityManager.aidl
available to native processes.

Test: Manual test with audio recording apps pushed to background and back
to top.
Bug: 111438757

Change-Id: I16d001dcaeb3e9a38743aa7b301445c94fe5dc99
parent 910c0aa1

libs/binder/ActivityManager.cpp

+9 −0
Original line number Diff line number Diff line
@@ -89,6 +89,15 @@ bool ActivityManager::isUidActive(const uid_t uid, const String16& callingPackag 
    return false;

}



int32_t ActivityManager::getUidProcessState(const uid_t uid, const String16& callingPackage)

{

    sp<IActivityManager> service = getService();

    if (service != nullptr) {

        return service->getUidProcessState(uid, callingPackage);

    }

    return PROCESS_STATE_UNKNOWN;

}



status_t ActivityManager::linkToDeath(const sp<IBinder::DeathRecipient>& recipient) {

    sp<IActivityManager> service = getService();

    if (service != nullptr) {

libs/binder/IActivityManager.cpp

+15 −1
Original line number Diff line number Diff line
@@ -17,8 +17,8 @@ 
#include <unistd.h>

#include <fcntl.h>



#include <binder/ActivityManager.h>

#include <binder/IActivityManager.h>



#include <binder/Parcel.h>



namespace android {
@@ -90,6 +90,20 @@ public: 
         if (reply.readExceptionCode() != 0) return false;

         return reply.readInt32() == 1;

    }



    virtual int32_t getUidProcessState(const uid_t uid, const String16& callingPackage)

    {

        Parcel data, reply;

        data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());

        data.writeInt32(uid);

        data.writeString16(callingPackage);

        remote()->transact(GET_UID_PROCESS_STATE_TRANSACTION, data, &reply);

        // fail on exception

        if (reply.readExceptionCode() != 0) {

            return ActivityManager::PROCESS_STATE_UNKNOWN;

        }

        return reply.readInt32();

    }

};



// ------------------------------------------------------------------------------------

libs/binder/IUidObserver.cpp

+18 −0
Original line number Diff line number Diff line
@@ -55,6 +55,16 @@ public: 
        data.writeInt32(disabled ? 1 : 0);

        remote()->transact(ON_UID_IDLE_TRANSACTION, data, &reply, IBinder::FLAG_ONEWAY);

    }



    virtual void onUidStateChanged(uid_t uid, int32_t procState, int64_t procStateSeq)

    {

        Parcel data, reply;

        data.writeInterfaceToken(IUidObserver::getInterfaceDescriptor());

        data.writeInt32((int32_t) uid);

        data.writeInt32(procState);

        data.writeInt64(procStateSeq);

        remote()->transact(ON_UID_STATE_CHANGED_TRANSACTION, data, &reply, IBinder::FLAG_ONEWAY);

    }

};



// ----------------------------------------------------------------------
@@ -89,6 +99,14 @@ status_t BnUidObserver::onTransact( 
            onUidIdle(uid, disabled);

            return NO_ERROR;

        } break;

        case ON_UID_STATE_CHANGED_TRANSACTION: {

            CHECK_INTERFACE(IUidObserver, data, reply);

            uid_t uid = data.readInt32();

            int32_t procState = data.readInt32();

            int64_t procStateSeq = data.readInt64();

            onUidStateChanged(uid, procState, procStateSeq);

            return NO_ERROR;

        } break;

        default:

            return BBinder::onTransact(code, data, reply, flags);

    }

libs/binder/include/binder/ActivityManager.h

+26 −3
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ class ActivityManager 
public:



    enum {

        // Flag for registerUidObserver: report uid state changed

        UID_OBSERVER_PROCSTATE = 1<<0,

        // Flag for registerUidObserver: report uid gone

        UID_OBSERVER_GONE = 1<<1,

        // Flag for registerUidObserver: report uid has become idle
@@ -40,8 +42,27 @@ public: 
    };



    enum {

        // Not a real process state

        PROCESS_STATE_UNKNOWN = -1

        PROCESS_STATE_UNKNOWN = -1,

        PROCESS_STATE_PERSISTENT = 0,

        PROCESS_STATE_PERSISTENT_UI = 1,

        PROCESS_STATE_TOP = 2,

        PROCESS_STATE_FOREGROUND_SERVICE = 3,

        PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 4,

        PROCESS_STATE_IMPORTANT_FOREGROUND = 5,

        PROCESS_STATE_IMPORTANT_BACKGROUND = 6,

        PROCESS_STATE_TRANSIENT_BACKGROUND = 7,

        PROCESS_STATE_BACKUP = 8,

        PROCESS_STATE_SERVICE = 9,

        PROCESS_STATE_RECEIVER = 10,

        PROCESS_STATE_TOP_SLEEPING = 11,

        PROCESS_STATE_HEAVY_WEIGHT = 12,

        PROCESS_STATE_HOME = 13,

        PROCESS_STATE_LAST_ACTIVITY = 14,

        PROCESS_STATE_CACHED_ACTIVITY = 15,

        PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16,

        PROCESS_STATE_CACHED_RECENT = 17,

        PROCESS_STATE_CACHED_EMPTY = 18,

        PROCESS_STATE_NONEXISTENT = 19,

    };



    ActivityManager();
@@ -53,6 +74,8 @@ public: 
                             const String16& callingPackage);

    void unregisterUidObserver(const sp<IUidObserver>& observer);

    bool isUidActive(const uid_t uid, const String16& callingPackage);

    int getUidProcessState(const uid_t uid, const String16& callingPackage);





  status_t linkToDeath(const sp<IBinder::DeathRecipient>& recipient);

    status_t unlinkToDeath(const sp<IBinder::DeathRecipient>& recipient);

libs/binder/include/binder/IActivityManager.h

+3 −1
Original line number Diff line number Diff line
@@ -38,12 +38,14 @@ public: 
                                     const String16& callingPackage) = 0;

    virtual void unregisterUidObserver(const sp<IUidObserver>& observer) = 0;

    virtual bool isUidActive(const uid_t uid, const String16& callingPackage) = 0;

    virtual int32_t getUidProcessState(const uid_t uid, const String16& callingPackage) = 0;



    enum {

        OPEN_CONTENT_URI_TRANSACTION = IBinder::FIRST_CALL_TRANSACTION,

        REGISTER_UID_OBSERVER_TRANSACTION,

        UNREGISTER_UID_OBSERVER_TRANSACTION,

        IS_UID_ACTIVE_TRANSACTION

        IS_UID_ACTIVE_TRANSACTION,

        GET_UID_PROCESS_STATE_TRANSACTION

    };

};