1 files changed, 196 insertions, 0 deletions
diff --git a/rs/java/android/renderscript/BaseObj.java b/rs/java/android/renderscript/BaseObj.java
new file mode 100644
index 0000000..1372ab7
--- /dev/null
+++ b/rs/java/android/renderscript/BaseObj.java
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed 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 android.renderscript;
+
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ * BaseObj is the base class for all RenderScript objects owned by a RS context.
+ * It is responsible for lifetime management and resource tracking. This class
+ * should not be used by a user application.
+ *
+ **/
+public class BaseObj {
+    BaseObj(long id, RenderScript rs) {
+        rs.validate();
+        mRS = rs;
+        mID = id;
+        mDestroyed = false;
+    }
+
+    void setID(long id) {
+        if (mID != 0) {
+            throw new RSRuntimeException("Internal Error, reset of object ID.");
+        }
+        mID = id;
+    }
+
+    /**
+     * Lookup the native object ID for this object.  Primarily used by the
+     * generated reflected code.
+     *
+     * @param rs Context to verify against internal context for
+     *           match.
+     *
+     * @return long
+     */
+    long getID(RenderScript rs) {
+        mRS.validate();
+        if (mDestroyed) {
+            throw new RSInvalidStateException("using a destroyed object.");
+        }
+        if (mID == 0) {
+            throw new RSRuntimeException("Internal error: Object id 0.");
+        }
+        if ((rs != null) && (rs != mRS)) {
+            throw new RSInvalidStateException("using object with mismatched context.");
+        }
+        return mID;
+    }
+
+    void checkValid() {
+        if (mID == 0) {
+            throw new RSIllegalArgumentException("Invalid object.");
+        }
+    }
+
+    private long mID;
+    private boolean mDestroyed;
+    private String mName;
+    RenderScript mRS;
+
+    /**
+     * setName assigns a name to an object.  This object can later be looked up
+     * by this name.
+     *
+     * @param name The name to assign to the object.
+     */
+    public void setName(String name) {
+        if (name == null) {
+            throw new RSIllegalArgumentException(
+                "setName requires a string of non-zero length.");
+        }
+        if(name.length() < 1) {
+            throw new RSIllegalArgumentException(
+                "setName does not accept a zero length string.");
+        }
+        if(mName != null) {
+            throw new RSIllegalArgumentException(
+                "setName object already has a name.");
+        }
+
+        try {
+            byte[] bytes = name.getBytes("UTF-8");
+            mRS.nAssignName(mID, bytes);
+            mName = name;
+        } catch (java.io.UnsupportedEncodingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * @return name of the renderscript object
+     */
+    public String getName() {
+        return mName;
+    }
+
+    private void helpDestroy() {
+        boolean shouldDestroy = false;
+        synchronized(this) {
+            if (!mDestroyed) {
+                shouldDestroy = true;
+                mDestroyed = true;
+            }
+        }
+
+        if (shouldDestroy) {
+            // must include nObjDestroy in the critical section
+            ReentrantReadWriteLock.ReadLock rlock = mRS.mRWLock.readLock();
+            rlock.lock();
+            // AllocationAdapters are BaseObjs with an ID of 0 but should not be passed to nObjDestroy
+            if(mRS.isAlive() && mID != 0) {
+                mRS.nObjDestroy(mID);
+            }
+            rlock.unlock();
+            mRS = null;
+            mID = 0;
+        }
+    }
+
+    protected void finalize() throws Throwable {
+        helpDestroy();
+        super.finalize();
+    }
+
+    /**
+     * Frees any native resources associated with this object.  The
+     * primary use is to force immediate cleanup of resources when it is
+     * believed the GC will not respond quickly enough.
+     */
+    public void destroy() {
+        if(mDestroyed) {
+            throw new RSInvalidStateException("Object already destroyed.");
+        }
+        helpDestroy();
+    }
+
+    /**
+     * If an object came from an a3d file, java fields need to be
+     * created with objects from the native layer
+     */
+    void updateFromNative() {
+        mRS.validate();
+        mName = mRS.nGetName(getID(mRS));
+    }
+
+    /**
+     * Calculates the hash code value for a BaseObj.
+     *
+     * @return int
+     */
+    @Override
+    public int hashCode() {
+        return (int)((mID & 0xfffffff) ^ (mID >> 32));
+    }
+
+    /**
+     * Compare the current BaseObj with another BaseObj for equality.
+     *
+     * @param obj The object to check equality with.
+     *
+     * @return boolean
+     */
+    @Override
+    public boolean equals(Object obj) {
+        // Early-out check to see if both BaseObjs are actually the same
+        if (this == obj)
+            return true;
+
+        if (obj == null) {
+            return false;
+        }
+
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+
+        BaseObj b = (BaseObj) obj;
+        return mID == b.mID;
+    }
+}
+