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Commit 58ac218a authored by Michael Wachenschwanz's avatar Michael Wachenschwanz
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Dump per uid Binder Proxy Count before ProxyMap assert 

To help identify which apps may be leaking binder proxies

Bug: 71353150
Test: manual
Change-Id: Ib377056e3cef7088c6b05a03921d0b7a4f89d422
parent 877553e3

core/java/android/os/Binder.java

+17 −0
Original line number Diff line number Diff line
@@ -21,7 +21,9 @@ import android.annotation.Nullable; 
import android.util.ExceptionUtils;

import android.util.Log;

import android.util.Slog;

import android.util.SparseIntArray;



import com.android.internal.os.BinderInternal;

import com.android.internal.util.FastPrintWriter;

import com.android.internal.util.FunctionalUtils.ThrowingRunnable;

import com.android.internal.util.FunctionalUtils.ThrowingSupplier;
@@ -934,6 +936,7 @@ final class BinderProxy implements IBinder { 
                    final int totalUnclearedSize = unclearedSize();

                    if (totalUnclearedSize >= CRASH_AT_SIZE) {

                        dumpProxyInterfaceCounts();

                        dumpPerUidProxyCounts();

                        Runtime.getRuntime().gc();

                        throw new AssertionError("Binder ProxyMap has too many entries: "

                                + totalSize + " (total), " + totalUnclearedSize + " (uncleared), "
@@ -987,6 +990,20 @@ final class BinderProxy implements IBinder { 
            }

        }



        /**

         * Dump per uid binder proxy counts to the logcat.

         */

        private void dumpPerUidProxyCounts() {

            SparseIntArray counts = BinderInternal.nGetBinderProxyPerUidCounts();

            if (counts.size() == 0) return;

            Log.d(Binder.TAG, "Per Uid Binder Proxy Counts:");

            for (int i = 0; i < counts.size(); i++) {

                final int uid = counts.keyAt(i);

                final int binderCount = counts.valueAt(i);

                Log.d(Binder.TAG, "UID : " + uid + "  count = " + binderCount);

            }

        }



        // Corresponding ArrayLists in the following two arrays always have the same size.

        // They contain no empty entries. However WeakReferences in the values ArrayLists

        // may have been cleared.