From 96251f7aa2770d2d8278afbd6e4b603c24932049 Mon Sep 17 00:00:00 2001
From: Michael Bien <mbien@fh-landshut.de>
Date: Thu, 21 Jan 2010 14:11:39 +0100
Subject: more device properties.

---
 src/com/mbien/opencl/CLDevice.java | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

(limited to 'src/com/mbien/opencl/CLDevice.java')

diff --git a/src/com/mbien/opencl/CLDevice.java b/src/com/mbien/opencl/CLDevice.java
index f1a402be..e8d55eb1 100644
--- a/src/com/mbien/opencl/CLDevice.java
+++ b/src/com/mbien/opencl/CLDevice.java
@@ -2,6 +2,7 @@ package com.mbien.opencl;
 
 import com.sun.gluegen.runtime.PointerBuffer;
 import java.nio.Buffer;
+import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.EnumSet;
@@ -163,6 +164,16 @@ public final class CLDevice {
         return (int) deviceInfo.getLong(CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS);
     }
 
+    /**
+     * Returns the maximum number of work-items that can be specified in each
+     * dimension of the work-group.
+     * The minimum value is (1, 1, 1).
+     */
+    public int[] getMaxWorkItemSizes() {
+        int n = (int) deviceInfo.getLong(CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS);
+        return deviceInfo.getInts(n, CL_DEVICE_MAX_WORK_ITEM_SIZES);
+    }
+
     /**
      * Returns the max size in bytes of the arguments that can be passed to a kernel.
      * The minimum value is 256.
@@ -417,13 +428,28 @@ public final class CLDevice {
     }
 
 
-    private class CLDeviceInfoAccessor extends CLInfoAccessor {
+    private final class CLDeviceInfoAccessor extends CLInfoAccessor {
 
         @Override
         protected int getInfo(int name, long valueSize, Buffer value, PointerBuffer valueSizeRet) {
             return cl.clGetDeviceInfo(ID, name, valueSize, value, valueSizeRet);
         }
 
+        private int[] getInts(int n, int key) {
+
+            ByteBuffer buffer = localBB.get();
+            int ret = getInfo(key, buffer.capacity(), buffer, null);
+            CLException.checkForError(ret, "error while asking device for infos");
+
+            int[] array = new int[n];
+            for(int i = 0; i < array.length; i++) {
+                array[i] = (int)buffer.getLong();
+            }
+            buffer.rewind();
+            
+            return array;
+        }
+
     }
 
 
-- 
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