Add logging to MemoryIntArray (6d8f30be) · Commits · e / os / android_frameworks_base

core/java/android/util/MemoryIntArray.java

+44 −7

Original line number	Diff line number	Diff line
		@@ -16,13 +16,19 @@

		package android.util;

		import static android.os.Process.FIRST_APPLICATION_UID;

		import android.os.Parcel;
		import android.os.ParcelFileDescriptor;
		import android.os.Parcelable;
		import android.os.Process;

		import com.android.internal.annotations.GuardedBy;

		import libcore.io.IoUtils;
		import dalvik.system.CloseGuard;

		import libcore.io.IoUtils;

		import java.io.Closeable;
		import java.io.IOException;
		import java.util.UUID;
		@@ -49,13 +55,18 @@ import java.util.UUID;
		*/
		public final class MemoryIntArray implements Parcelable, Closeable {
		private static final String TAG = "MemoryIntArray";
		private static final boolean DEBUG = Process.myUid() < FIRST_APPLICATION_UID;

		private static final int MAX_SIZE = 1024;

		private final Object mLock = new Object();
		private final CloseGuard mCloseGuard = CloseGuard.get();

		private final boolean mIsOwner;
		private final long mMemoryAddr;

		/** Fd for the shared memory object, -1 when closed */
		@GuardedBy("mLock")
		private int mFd = -1;

		/**
		@@ -74,6 +85,7 @@ public final class MemoryIntArray implements Parcelable, Closeable {
		mFd = nativeCreate(name, size);
		mMemoryAddr = nativeOpen(mFd, mIsOwner);
		mCloseGuard.open("close");
		if (DEBUG) Log.i(TAG, "created " + getString());
		}

		private MemoryIntArray(Parcel parcel) throws IOException {
		@@ -85,6 +97,8 @@ public final class MemoryIntArray implements Parcelable, Closeable {
		mFd = pfd.detachFd();
		mMemoryAddr = nativeOpen(mFd, mIsOwner);
		mCloseGuard.open("close");

		if (DEBUG) Log.i(TAG, "created from parcel " + getString());
		}

		/**
		@@ -141,13 +155,33 @@ public final class MemoryIntArray implements Parcelable, Closeable {
		*/
		@Override
		public void close() throws IOException {
		synchronized (mLock) {
		if (!isClosed()) {
		if (DEBUG) {
		try {
		throw new Exception();
		} catch (Exception here) {
		Log.i(TAG, "closing " + getString(), here);
		}
		}
		nativeClose(mFd, mMemoryAddr, mIsOwner);
		mFd = -1;
		mCloseGuard.close();
		} else {
		try {
		throw new Exception();
		} catch (Exception here) {
		if (DEBUG) Log.i(TAG, getString() + " already closed", here);
		}
		}
		}
		}

		private String getString() {
		return this.getClass().getSimpleName() + "@" + System.identityHashCode(this)
		+ " mMemoryAddr=" + mMemoryAddr + " mFd=" + mFd;
		}

		/**
		* @return Whether this array is closed and shouldn't be used.
		*/
		@@ -162,7 +196,9 @@ public final class MemoryIntArray implements Parcelable, Closeable {
		mCloseGuard.warnIfOpen();
		}

		if (!isClosed()) {
		IoUtils.closeQuietly(this);
		}
		} finally {
		super.finalize();
		}
		@@ -206,7 +242,8 @@ public final class MemoryIntArray implements Parcelable, Closeable {

		private void enforceNotClosed() {
		if (isClosed()) {
		throw new IllegalStateException("cannot interact with a closed instance");
		throw new IllegalStateException("cannot interact with a closed instance "
		+ getString());
		}
		}