Java API for mojo system.

mojo/public/java/src/org/chromium/mojo/system/Handle.java

Index: mojo/public/java/src/org/chromium/mojo/system/Handle.java
diff --git a/mojo/public/java/src/org/chromium/mojo/system/Handle.java b/mojo/public/java/src/org/chromium/mojo/system/Handle.java
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+// 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;
+
+import java.io.Closeable;
+
+/**
+ * A generic mojo handle.
+ */
+public interface Handle extends Closeable {
+
+    /**
+     * Closes the given |handle|.
+     * <p>
+     * Concurrent operations on |handle| may succeed (or fail as usual) if they happen before the
+     * close, be cancelled with result |MojoResult.CANCELLED| if they properly overlap (this is
+     * likely the case with |wait()|, etc.), or fail with |MojoResult.INVALID_ARGUMENT| if they
+     * happen after.
+     */
+    @Override
+    public void close();
+
+    /**
+     * @see Core#wait(Handle, Core.WaitFlags, long)
+     */
+    public int wait(Core.WaitFlags flags, long deadline);
+
+    /**
+     * @return whether the handle is valid. A handle is valid until it has been explicitly closed or
+     *         send through a message pipe via |MessagePipeHandle.writeMessage|.
+     */
+    public boolean isValid();
+
+}