From 9a889948e7d649286ae0a473b49d14461c8981c5 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Sun, 17 Jul 2011 16:40:21 +0200
Subject: GlueGen proper size / alignment of primitive and compound types usage
[1/2] - Preparation.
Fix commit f733203dfbd034a6b1aa3eb2cd616437c982c435,
adding missing file src/java/jogamp/common/os/MachineDescriptionRuntime.java
---
.../common/os/MachineDescriptionRuntime.java | 120 +++++++++++++++++++++
1 file changed, 120 insertions(+)
create mode 100644 src/java/jogamp/common/os/MachineDescriptionRuntime.java
(limited to 'src/java/jogamp/common')
diff --git a/src/java/jogamp/common/os/MachineDescriptionRuntime.java b/src/java/jogamp/common/os/MachineDescriptionRuntime.java
new file mode 100644
index 0000000..f904151
--- /dev/null
+++ b/src/java/jogamp/common/os/MachineDescriptionRuntime.java
@@ -0,0 +1,120 @@
+/**
+ * Copyright 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 jogamp.common.os;
+
+import com.jogamp.common.nio.Buffers;
+import com.jogamp.common.os.MachineDescription;
+import com.jogamp.common.os.NativeLibrary;
+
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
+
+/**
+ * Runtime MachineDescription
+ */
+public class MachineDescriptionRuntime {
+
+ public static MachineDescription getMachineDescription(boolean is32BitByCPUArch) {
+ boolean libsLoaded = true;
+ try {
+ NativeLibrary.ensureNativeLibLoaded();
+ } catch (UnsatisfiedLinkError err) {
+ libsLoaded = false;
+ }
+
+ if(libsLoaded) {
+ int pointerSizeInBytes = getPointerSizeInBytesImpl();
+ switch(pointerSizeInBytes) {
+ case 4:
+ case 8:
+ break;
+ default:
+ throw new RuntimeException("Unsupported pointer size "+pointerSizeInBytes+"bytes, please implement.");
+ }
+
+ final long pageSizeL = getPageSizeInBytesImpl();
+ if(Integer.MAX_VALUE < pageSizeL) {
+ throw new InternalError("PageSize exceeds integer value: " + pageSizeL);
+ }
+
+ return getMachineDescriptionImpl(pointerSizeInBytes, (int) pageSizeL);
+ } else {
+ if(is32BitByCPUArch) {
+ return new MachineDescription32Bit();
+ } else {
+ return new MachineDescription64Bit();
+ }
+ }
+ }
+
+ private static MachineDescription getMachineDescriptionImpl(int pointerSize, int pageSize) {
+ // size: char, short, int, long, float, double, pointer
+ // alignment: int8, int16, int32, int64, char, short, int, long, float, double, pointer
+ return new MachineDescription(
+ true /* runtime validated */,
+ isLittleEndianImpl(),
+ getSizeOfCharImpl(), getSizeOfShortImpl(), getSizeOfIntImpl(), getSizeOfLongImpl(),
+ getSizeOfFloatImpl(), getSizeOfDoubleImpl(), pointerSize, pageSize,
+
+ getAlignmentInt8Impl(), getAlignmentInt16Impl(), getAlignmentInt32Impl(), getAlignmentInt64Impl(),
+ getAlignmentCharImpl(), getAlignmentShortImpl(), getAlignmentIntImpl(), getAlignmentLongImpl(),
+ getAlignmentFloatImpl(), getAlignmentDoubleImpl(), getAlignmentPointerImpl());
+ }
+ private static boolean isLittleEndianImpl() {
+ ByteBuffer tst_b = Buffers.newDirectByteBuffer(Buffers.SIZEOF_INT); // 32bit in native order
+ IntBuffer tst_i = tst_b.asIntBuffer();
+ ShortBuffer tst_s = tst_b.asShortBuffer();
+ tst_i.put(0, 0x0A0B0C0D);
+ return 0x0C0D == tst_s.get(0);
+ }
+
+ private static native int getPointerSizeInBytesImpl();
+ private static native long getPageSizeInBytesImpl();
+
+ private static native int getAlignmentInt8Impl();
+ private static native int getAlignmentInt16Impl();
+ private static native int getAlignmentInt32Impl();
+ private static native int getAlignmentInt64Impl();
+ private static native int getAlignmentCharImpl();
+ private static native int getAlignmentShortImpl();
+ private static native int getAlignmentIntImpl();
+ private static native int getAlignmentLongImpl();
+ private static native int getAlignmentPointerImpl();
+ private static native int getAlignmentFloatImpl();
+ private static native int getAlignmentDoubleImpl();
+ private static native int getSizeOfCharImpl();
+ private static native int getSizeOfShortImpl();
+ private static native int getSizeOfIntImpl();
+ private static native int getSizeOfLongImpl();
+ private static native int getSizeOfPointerImpl();
+ private static native int getSizeOfFloatImpl();
+ private static native int getSizeOfDoubleImpl();
+}
+
--
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