1 /*
 2  * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 package squares;
26 
27 import hat.Accelerator;
28 import hat.ComputeContext;
29 import hat.NDRange;
30 import hat.KernelContext;
31 import hat.backend.Backend;
32 import hat.buffer.S32Array;
33 
34 import static hat.ifacemapper.MappableIface.*;
35 import jdk.incubator.code.CodeReflection;
36 
37 import java.lang.invoke.MethodHandles;
38 
39 public class Main {
40     @CodeReflection
41     public static int squareit(int v) {
42         return  v * v;
43 
44     }
45 
46     @CodeReflection
47     public static void squareKernel(@RO  KernelContext kc, @RW S32Array s32Array) {
48         if (kc.gix < kc.gsx){
49            int value = s32Array.array(kc.gix);       // arr[cc.x]
50            s32Array.array(kc.gix, squareit(value));  // arr[cc.x]=value*value
51         }
52     }
53 
54     @CodeReflection
55     public static void square(@RO ComputeContext cc, @RW S32Array s32Array) {
56         cc.dispatchKernel(NDRange.of(NDRange.Global1D.of(s32Array.length())),
57                 kc -> squareKernel(kc, s32Array)
58         );
59     }
60 
61     static void main(String[] args) {
62         var accelerator = new Accelerator(MethodHandles.lookup(), Backend.FIRST);//new JavaMultiThreadedBackend());
63         var arr = S32Array.create(accelerator, 32);
64         for (int i = 0; i < arr.length(); i++) {
65             arr.array(i, i);
66         }
67         accelerator.compute(
68                 cc -> Main.square(cc, arr)  //QuotableComputeContextConsumer
69         );                                     //   extends Quotable, Consumer<ComputeContext>
70         for (int i = 0; i < arr.length(); i++) {
71             System.out.println(i + " " + arr.array(i));
72         }
73     }
74 }