| /* |
| * Copyright (C) 2012 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.support.v8.renderscript; |
| |
| import android.util.Log; |
| 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; |
| } |
| |
| android.renderscript.BaseObj getNObj() { |
| return null; |
| } |
| |
| void checkValid() { |
| if ((mID == 0) && (getNObj() == null)) { |
| throw new RSIllegalArgumentException("Invalid object."); |
| } |
| } |
| |
| private long mID; |
| private boolean mDestroyed; |
| RenderScript mRS; |
| |
| 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(); |
| if(mRS.isAlive()) { |
| 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(); |
| } |
| |
| /** |
| * 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; |
| } |
| } |
| |