Java API for mojo system.

mojo/system/android/src/org/chromium/mojo/system/HandleImpl.java

Index: mojo/system/android/src/org/chromium/mojo/system/HandleImpl.java
diff --git a/mojo/system/android/src/org/chromium/mojo/system/HandleImpl.java b/mojo/system/android/src/org/chromium/mojo/system/HandleImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..baf1fb277b31a5a3098bd57a693dfb4d04cf9330
--- /dev/null
+++ b/mojo/system/android/src/org/chromium/mojo/system/HandleImpl.java
@@ -0,0 +1,102 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.mojo.system;
+
+
+/**
+ * TODO(qsr): Insert description here.
+ */
+public class HandleImpl implements Handle {
+
+    static final int INVALID_HANDLE = 0;
+
+    /**
+     * The pointer to the scoped handle owned by this object.
+     */
+    private int mMojoHandle;
+
+    /**
+     * the core implementation. Will be used to delegate all behavior.
+     */
+    protected CoreImpl mCore;
+
+    /**
+     * TODO(qsr):
+     */
+    HandleImpl(CoreImpl core, int mojoHandle) {
+        this.mCore = core;
+        mMojoHandle = mojoHandle;
+    }
+
+    /**
+     * TODO(qsr):
+     */
+    HandleImpl(HandleImpl other) {
+        this.mCore = other.mCore;
+        int mojoHandle = other.mMojoHandle;
+        other.mMojoHandle = INVALID_HANDLE;
+        this.mMojoHandle = mojoHandle;
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see org.chromium.mojo.system.Handle#close()
+     */
+    @Override
+    public void close() {
+        // After a close, the handle is invalid whether the close succeed or not.
+        int handle = mMojoHandle;
+        mMojoHandle = INVALID_HANDLE;
+        mCore.close(handle);
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see org.chromium.mojo.system.Handle#wait(...)
+     */
+    @Override
+    public MojoResult wait(Core.WaitFlags flags, long deadline) {
+        return mCore.wait(this, flags, deadline);
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see org.chromium.mojo.system.Handle#isValid()
+     */
+    @Override
+    public boolean isValid() {
+        return mMojoHandle != INVALID_HANDLE;
+    }
+
+    /**
+     * Getter for the native scoped handle.
+     *
+     * @return the native scoped handle.
+     */
+    int getMojoHandle() {
+        return mMojoHandle;
+    }
+
+    /**
+     * TODO(qsr):
+     */
+    void invalidateHandle() {
+        mMojoHandle = INVALID_HANDLE;
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see java.lang.Object#finalize()
+     */
+    @Override
+    protected void finalize() throws Throwable {
+        if (isValid()) {
+            // Ignore result at thit point.
+            mCore.closeWithResult(mMojoHandle);
+        }
+        super.finalize();
+    }
+
+}