| package com.android.server.am; |
| |
| import static android.app.ActivityManager.StackId.DOCKED_STACK_ID; |
| import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; |
| import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID; |
| import static android.app.ActivityManager.StackId.HOME_STACK_ID; |
| import static android.app.ActivityManager.StackId.PINNED_STACK_ID; |
| |
| import android.app.ActivityManager.StackId; |
| import android.content.Context; |
| import android.os.SystemClock; |
| |
| import com.android.internal.logging.MetricsLogger; |
| |
| /** |
| * Handles logging into Tron. |
| */ |
| class ActivityMetricsLogger { |
| // Window modes we are interested in logging. If we ever introduce a new type, we need to add |
| // a value here and increase the {@link #TRON_WINDOW_STATE_VARZ_STRINGS} array. |
| private static final int WINDOW_STATE_STANDARD = 0; |
| private static final int WINDOW_STATE_SIDE_BY_SIDE = 1; |
| private static final int WINDOW_STATE_FREEFORM = 2; |
| private static final int WINDOW_STATE_INVALID = -1; |
| |
| // Preallocated strings we are sending to tron, so we don't have to allocate a new one every |
| // time we log. |
| private static final String[] TRON_WINDOW_STATE_VARZ_STRINGS = { |
| "window_time_0", "window_time_1", "window_time_2"}; |
| |
| private int mWindowState = WINDOW_STATE_STANDARD; |
| private long mLastLogTimeSecs; |
| private final ActivityStackSupervisor mSupervisor; |
| private final Context mContext; |
| |
| ActivityMetricsLogger(ActivityStackSupervisor supervisor, Context context) { |
| mLastLogTimeSecs = SystemClock.elapsedRealtime() / 1000; |
| mSupervisor = supervisor; |
| mContext = context; |
| } |
| |
| void logWindowState() { |
| final long now = SystemClock.elapsedRealtime() / 1000; |
| if (mWindowState != WINDOW_STATE_INVALID) { |
| // We log even if the window state hasn't changed, because the user might remain in |
| // home/fullscreen move forever and we would like to track this kind of behavior |
| // too. |
| MetricsLogger.count(mContext, TRON_WINDOW_STATE_VARZ_STRINGS[mWindowState], |
| (int) (now - mLastLogTimeSecs)); |
| } |
| mLastLogTimeSecs = now; |
| |
| ActivityStack stack = mSupervisor.getStack(DOCKED_STACK_ID); |
| if (stack != null && stack.isStackVisibleLocked()) { |
| mWindowState = WINDOW_STATE_SIDE_BY_SIDE; |
| return; |
| } |
| mWindowState = WINDOW_STATE_INVALID; |
| stack = mSupervisor.getFocusedStack(); |
| if (stack.mStackId == PINNED_STACK_ID) { |
| stack = mSupervisor.findStackBehind(stack); |
| } |
| if (stack.mStackId == HOME_STACK_ID |
| || stack.mStackId == FULLSCREEN_WORKSPACE_STACK_ID) { |
| mWindowState = WINDOW_STATE_STANDARD; |
| } else if (stack.mStackId == DOCKED_STACK_ID) { |
| throw new IllegalStateException("Docked stack shouldn't be the focused stack, " |
| + "because it reported not being visible."); |
| } else if (stack.mStackId == FREEFORM_WORKSPACE_STACK_ID) { |
| mWindowState = WINDOW_STATE_FREEFORM; |
| } else if (StackId.isStaticStack(stack.mStackId)) { |
| throw new IllegalStateException("Unknown stack=" + stack); |
| } |
| } |
| } |