1 files changed, 57 insertions, 0 deletions
diff --git a/android/Bootstrap/src/org/libreoffice/kit/DirectBufferAllocator.java b/android/Bootstrap/src/org/libreoffice/kit/DirectBufferAllocator.java
new file mode 100644
index 000000000..99cb3a486
--- /dev/null
+++ b/android/Bootstrap/src/org/libreoffice/kit/DirectBufferAllocator.java
@@ -0,0 +1,57 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.libreoffice.kit;
+
+import java.nio.ByteBuffer;
+
+/**
+ * This is the common code for allocation and freeing of memory. For this direct ByteBuffer is used but
+ * in the past it was possible to use a JNI version of allocation because of a bug in old Android version.
+ */
+public final class DirectBufferAllocator {
+
+    private static final String LOGTAG = DirectBufferAllocator.class.getSimpleName();
+
+    private DirectBufferAllocator() {
+    }
+
+    public static ByteBuffer allocate(int size) {
+        ByteBuffer directBuffer = ByteBuffer.allocateDirect(size);
+        if (directBuffer == null) {
+            if (size <= 0) {
+                throw new IllegalArgumentException("Invalid allocation size: " + size);
+            } else {
+                throw new OutOfMemoryError("allocateDirectBuffer() returned null");
+            }
+        } else if (!directBuffer.isDirect()) {
+            throw new AssertionError("allocateDirectBuffer() did not return a direct buffer");
+        }
+
+        return directBuffer;
+    }
+
+    public static ByteBuffer free(ByteBuffer buffer) {
+        if (buffer == null) {
+            return null;
+        }
+
+        if (!buffer.isDirect()) {
+            throw new IllegalArgumentException("ByteBuffer must be direct");
+        }
+        // can't free buffer - leave this to the VM
+        return null;
+    }
+
+    public static ByteBuffer guardedAllocate(int size) {
+        ByteBuffer buffer = null;
+        try {
+            buffer = allocate(size);
+        } catch (OutOfMemoryError oomException) {
+            return null;
+        }
+        return buffer;
+    }
+}