Hybrid Java buffer release: Support both manual and auto release at t…

…he same time (apache#34)

* Revert "Add AutoBufferLedger (apache#31)"

This reverts commit e48da37.

* Commit 1

* Commit 2

* Fix config builder visibility in Scala

* Commit 2 Fixup

* Commit 3

* Commit 3 Fixup

java/adapter/orc/src/main/java/org/apache/arrow/adapter/orc/OrcReferenceManager.java

@@ -78,6 +78,11 @@ public void retain(int increment) {
     bufRefCnt.addAndGet(increment);
   }
 
+  @Override
+  public boolean isOpen() {
+    return getRefCount() > 0;
+  }
+
   @Override
   public ArrowBuf retain(ArrowBuf srcBuffer, BufferAllocator targetAllocator) {
     retain();

java/dataset/src/main/java/org/apache/arrow/dataset/jni/DirectReservationListener.java

@@ -21,7 +21,6 @@
 import java.lang.reflect.Method;
 import java.util.concurrent.atomic.AtomicLong;
 
-import org.apache.arrow.memory.util.MemoryUtil;
 import org.apache.arrow.util.VisibleForTesting;
 
 /**
@@ -30,6 +29,20 @@
  * "-XX:MaxDirectMemorySize".
  */
 public class DirectReservationListener implements ReservationListener {
+  private final Method methodReserve;
+  private final Method methodUnreserve;
+
+  private DirectReservationListener() {
+    try {
+      final Class<?> classBits = Class.forName("java.nio.Bits");
+      methodReserve = classBits.getDeclaredMethod("reserveMemory", long.class, int.class);
+      methodReserve.setAccessible(true);
+      methodUnreserve = classBits.getDeclaredMethod("unreserveMemory", long.class, int.class);
+      methodUnreserve.setAccessible(true);
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
 
   private static final DirectReservationListener INSTANCE = new DirectReservationListener();
 
@@ -42,22 +55,43 @@ public static DirectReservationListener instance() {
    */
   @Override
   public void reserve(long size) {
-    MemoryUtil.reserveDirectMemory(size);
+    try {
+      if (size > Integer.MAX_VALUE) {
+        throw new IllegalArgumentException("reserve size should not be larger than Integer.MAX_VALUE (0x7fffffff)");
+      }
+      methodReserve.invoke(null, (int) size, (int) size);
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
   }
 
   /**
    * Unreserve bytes by invoking java.nio.java.Bitjava.nio.Bitss#unreserveMemory.
    */
   @Override
   public void unreserve(long size) {
-    MemoryUtil.unreserveDirectMemory(size);
+    try {
+      if (size > Integer.MAX_VALUE) {
+        throw new IllegalArgumentException("unreserve size should not be larger than Integer.MAX_VALUE (0x7fffffff)");
+      }
+      methodUnreserve.invoke(null, (int) size, (int) size);
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
   }
 
   /**
    * Get current reservation of jVM direct memory. Visible for testing.
    */
   @VisibleForTesting
   public long getCurrentDirectMemReservation() {
-    return MemoryUtil.getCurrentDirectMemReservation();
+    try {
+      final Class<?> classBits = Class.forName("java.nio.Bits");
+      final Field f = classBits.getDeclaredField("reservedMemory");
+      f.setAccessible(true);
+      return ((AtomicLong) f.get(null)).get();
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
   }
 }

java/dataset/src/main/java/org/apache/arrow/dataset/jni/NativeUnderlyingMemory.java

@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.dataset.jni;
+
+import org.apache.arrow.memory.*;
+
+/**
+ * MemoryChunkManager implementation for native allocated memory.
+ */
+public class NativeUnderlyingMemory implements MemoryChunk {
+
+  private final int size;
+  private final long nativeInstanceId;
+  private final long address;
+
+  /**
+   * Constructor.
+   *
+   * @param size Size of underlying memory (in bytes)
+   * @param nativeInstanceId ID of the native instance
+   * @param address Address of underlying memory
+   */
+  NativeUnderlyingMemory(int size, long nativeInstanceId, long address) {
+    this.size = size;
+    this.nativeInstanceId = nativeInstanceId;
+    this.address = address;
+  }
+
+  @Override
+  public long size() {
+    return size;
+  }
+
+  @Override
+  public long memoryAddress() {
+    return address;
+  }
+
+  @Override
+  public void destroy() {
+    JniWrapper.get().releaseBuffer(nativeInstanceId);
+  }
+}

java/dataset/src/main/java/org/apache/arrow/dataset/jni/UnsafeRecordBatchSerializer.java

@@ -35,7 +35,8 @@
 import org.apache.arrow.flatbuf.Message;
 import org.apache.arrow.flatbuf.MessageHeader;
 import org.apache.arrow.flatbuf.RecordBatch;
-import org.apache.arrow.memory.*;
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
 import org.apache.arrow.memory.util.LargeMemoryUtil;
 import org.apache.arrow.util.Preconditions;
 import org.apache.arrow.vector.compression.NoCompressionCodec;
@@ -126,10 +127,9 @@ public static ArrowRecordBatch deserializeUnsafe(
       final byte[] refDecoded = Base64.getDecoder().decode(keyValue.value());
       final long nativeBufferRef = ByteBuffer.wrap(refDecoded).order(ByteOrder.LITTLE_ENDIAN).getLong();
       final int size = LargeMemoryUtil.checkedCastToInt(bufferMeta.length());
-      final NativeUnderlyingMemory am = NativeUnderlyingMemory.create(allocator,
-          size, nativeBufferRef, bufferMeta.offset());
-      ReferenceManager rm = am.createReferenceManager(allocator);
-      ArrowBuf buf = new ArrowBuf(rm, null, size, bufferMeta.offset());
+      final NativeUnderlyingMemory chunk = new NativeUnderlyingMemory(size, nativeBufferRef,
+          bufferMeta.offset());
+      ArrowBuf buf = allocator.buffer(chunk);
       buffers.add(buf);
     }
 

java/dataset/src/test/java/org/apache/arrow/memory/TestNativeUnderlyingMemory.java → java/dataset/src/test/java/org/apache/arrow/dataset/jni/TestNativeUnderlyingMemory.java

@@ -15,10 +15,11 @@
  * limitations under the License.
  */
 
-package org.apache.arrow.memory;
+package org.apache.arrow.dataset.jni;
 
 import static org.junit.Assert.*;
 
+import org.apache.arrow.memory.*;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -46,41 +47,41 @@ public void testReservation() {
     final RootAllocator root = rootAllocator();
 
     final int size = 512;
-    final AllocationManager am = new MockUnderlyingMemory(root, size);
-    final BufferLedger ledger = am.associate(root);
+    final MemoryChunk chunk = new MockUnderlyingMemory(size);
+    final ArrowBuf buffer = root.buffer(chunk);
 
     assertEquals(size, root.getAllocatedMemory());
 
-    ledger.release();
+    buffer.close();
   }
 
   @Test
   public void testBufferTransfer() {
     final RootAllocator root = rootAllocator();
 
-    ChildAllocator allocator1 = (ChildAllocator) root.newChildAllocator("allocator1", 0, Long.MAX_VALUE);
-    ChildAllocator allocator2 = (ChildAllocator) root.newChildAllocator("allocator2", 0, Long.MAX_VALUE);
+    BufferAllocator allocator1 = root.newChildAllocator("allocator1", 0, Long.MAX_VALUE);
+    BufferAllocator allocator2 = root.newChildAllocator("allocator2", 0, Long.MAX_VALUE);
     assertEquals(0, allocator1.getAllocatedMemory());
     assertEquals(0, allocator2.getAllocatedMemory());
 
     final int size = 512;
-    final AllocationManager am = new MockUnderlyingMemory(allocator1, size);
+    final MemoryChunk chunk = new MockUnderlyingMemory(size);
+    final ArrowBuf buffer = allocator1.buffer(chunk);
 
-    final BufferLedger owningLedger = am.associate(allocator1);
-    assertEquals(size, owningLedger.getAccountedSize());
-    assertEquals(size, owningLedger.getSize());
+    assertEquals(size, buffer.getActualMemoryConsumed());
+    assertEquals(size, buffer.getPossibleMemoryConsumed());
     assertEquals(size, allocator1.getAllocatedMemory());
 
-    final BufferLedger transferredLedger = am.associate(allocator2);
-    owningLedger.release(); // release previous owner
-    assertEquals(0, owningLedger.getAccountedSize());
-    assertEquals(size, owningLedger.getSize());
-    assertEquals(size, transferredLedger.getAccountedSize());
-    assertEquals(size, transferredLedger.getSize());
+    final ArrowBuf transferredBuffer = buffer.getReferenceManager().retain(buffer, allocator2);
+    buffer.close(); // release previous owner
+    assertEquals(0, buffer.getActualMemoryConsumed());
+    assertEquals(size, buffer.getPossibleMemoryConsumed());
+    assertEquals(size, transferredBuffer.getActualMemoryConsumed());
+    assertEquals(size, transferredBuffer.getPossibleMemoryConsumed());
     assertEquals(0, allocator1.getAllocatedMemory());
     assertEquals(size, allocator2.getAllocatedMemory());
 
-    transferredLedger.release();
+    transferredBuffer.close();
     allocator1.close();
     allocator2.close();
   }
@@ -93,18 +94,18 @@ private static class MockUnderlyingMemory extends NativeUnderlyingMemory {
     /**
      * Constructor.
      */
-    MockUnderlyingMemory(BaseAllocator accountingAllocator, int size) {
-      super(accountingAllocator, size, -1L, -1L);
+    MockUnderlyingMemory(int size) {
+      super(size, -1L, -1L);
     }
 
     @Override
-    protected void release0() {
-      System.out.println("Underlying memory released. Size: " + getSize());
+    public void destroy() {
+      System.out.println("Underlying memory released. Size: " + size());
     }
 
     @Override
-    protected long memoryAddress() {
-      throw new UnsupportedOperationException();
+    public long memoryAddress() {
+      return -1L;
     }
   }
 }

java/memory/memory-core/src/main/java/org/apache/arrow/memory/Accountant.java

@@ -97,7 +97,7 @@ AllocationOutcome allocateBytes(long size) {
     } else {
       // Try again, but with details this time.
       // Populating details only on failures avoids performance overhead in the common case (success case).
-      AllocationOutcomeDetails details = new AllocationOutcomeDetails();
+      AllocationOutcomeDetails details = new AllocationOutcomeDetails(this);
       status = allocateBytesInternal(size, details);
       return new AllocationOutcome(status, details);
     }