introduced CLAccessorFactory spi and threadlocal default impl for CLDevice and CLPlatform.

1 files changed, 132 insertions, 0 deletions

diff --git a/src/com/jogamp/opencl/impl/CLTLInfoAccessor.java b/src/com/jogamp/opencl/impl/CLTLInfoAccessor.java
new file mode 100644
index 00000000..ee5d0e47
--- /dev/null
+++ b/src/com/jogamp/opencl/impl/CLTLInfoAccessor.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2009 - 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.opencl.impl;
+
+import com.jogamp.opencl.spi.CLInfoAccessor;
+import com.jogamp.common.nio.NativeSizeBuffer;
+import com.jogamp.common.os.Platform;
+import com.jogamp.opencl.util.CLUtil;
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+
+import static com.jogamp.common.nio.Buffers.*;
+import static com.jogamp.opencl.CLException.*;
+
+/**
+ * Internal utility for common OpenCL clGetFooInfo calls.
+ * Threadsafe, threadlocal implementation.
+ * @author Michael Bien
+ */
+public abstract class CLTLInfoAccessor implements CLInfoAccessor {
+
+    private static final int BB_SIZE = 512;
+
+    protected final static ThreadLocal<ByteBuffer> localBB = new ThreadLocal<ByteBuffer>() {
+
+        @Override
+        protected ByteBuffer initialValue() {
+            return newDirectByteBuffer(BB_SIZE);
+        }
+
+    };
+    protected final static ThreadLocal<NativeSizeBuffer> localNSB = new ThreadLocal<NativeSizeBuffer>() {
+
+        @Override
+        protected NativeSizeBuffer initialValue() {
+            return NativeSizeBuffer.allocateDirect(1);
+        }
+
+    };
+
+    @Override
+    public final long getLong(int key) {
+
+        ByteBuffer buffer = getBB(8).putLong(0, 0);
+        int ret = getInfo(key, 8, buffer, null);
+        checkForError(ret, "error while asking for info value");
+
+        return buffer.getLong(0);
+    }
+
+    @Override
+    public final String getString(int key) {
+        
+        NativeSizeBuffer sizeBuffer = getNSB();
+        int ret = getInfo(key, 0, null, sizeBuffer);
+        checkForError(ret, "error while asking for info string");
+
+        int clSize = (int)sizeBuffer.get(0);
+        ByteBuffer buffer = getBB(clSize);
+
+        ret = getInfo(key, buffer.capacity(), buffer, null);
+        checkForError(ret, "error while asking for info string");
+
+        byte[] array = new byte[clSize];
+        buffer.get(array).rewind();
+
+        return CLUtil.clString2JavaString(array, clSize);
+
+    }
+
+    @Override
+    public final int[] getInts(int key, int n) {
+
+        ByteBuffer buffer = getBB(n * (Platform.is32Bit()?4:8));
+        int ret = getInfo(key, buffer.capacity(), buffer, null);
+        checkForError(ret, "error while asking for info value");
+
+        int[] array = new int[n];
+        for(int i = 0; i < array.length; i++) {
+            if(Platform.is32Bit()) {
+                array[i] = buffer.getInt();
+            }else{
+                array[i] = (int)buffer.getLong();
+            }
+        }
+        buffer.rewind();
+
+        return array;
+    }
+
+    protected ByteBuffer getBB(int minCapacity) {
+        if(minCapacity > BB_SIZE) {
+            return newDirectByteBuffer(minCapacity);
+        }else{
+            return localBB.get();
+        }
+    }
+
+    protected NativeSizeBuffer getNSB() {
+        return localNSB.get();
+    }
+
+    protected abstract int getInfo(int name, long valueSize, Buffer value, NativeSizeBuffer valueSizeRet);
+
+
+}