Refactored computations of sizes of data types and offsets of fields

in data structures in GlueGen to be performed lazily via SizeThunks.
The concrete size of primitive data types is computed only by passing
a MachineDescription into one of these thunks. Changed generated glue
code for struct accessors to delegate their instantiation and field
access to specialized 32- or 64-bit versions. This should allow one
jar file to support both 32-bit and 64-bit CPUs; the native code is of
course still specialized for the processor and data model. Changed
default build to generate both 32-bit and 64-bit accessors for all
generated data structures. Tested on Windows; more testing, including
build testing, is needed on other platforms.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@426 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 75 insertions, 0 deletions

diff --git a/src/classes/com/sun/gluegen/runtime/CPU.java b/src/classes/com/sun/gluegen/runtime/CPU.java
new file mode 100755
index 000000000..228ea0f03
--- /dev/null
+++ b/src/classes/com/sun/gluegen/runtime/CPU.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.sun.gluegen.runtime;
+
+/** Provides information to autogenerated struct accessors about what
+    kind of architecture (32- or 64-bit) we are currently running
+    on. */
+
+public class CPU {
+  private static boolean is32Bit;
+
+  static {
+    // We don't seem to need an AccessController.doPrivileged() block
+    // here as these system properties are visible even to unsigned
+    // applets
+    // Note: this code is replicated in StructLayout.java
+    String os = System.getProperty("os.name").toLowerCase();
+    String cpu = System.getProperty("os.arch").toLowerCase();
+    if ((os.startsWith("windows") && cpu.equals("x86")) ||
+        (os.startsWith("linux") && cpu.equals("i386")) ||
+        (os.startsWith("mac os") && cpu.equals("ppc")) ||
+        (os.startsWith("sunos") && cpu.equals("sparc")) ||
+        (os.startsWith("sunos") && cpu.equals("x86")) ||
+        (os.startsWith("freebsd") && cpu.equals("i386"))) {
+      is32Bit = true;
+    } else if ((os.startsWith("linux") && cpu.equals("amd64")) ||
+               (os.startsWith("linux") && cpu.equals("x86_64")) ||
+               (os.startsWith("linux") && cpu.equals("ia64")) ||
+               (os.startsWith("sunos") && cpu.equals("amd64"))) {
+    } else {
+      throw new RuntimeException("Please port CPU detection (32/64 bit) to your platform (" + os + "/" + cpu + ")");
+    }
+  }
+
+  public static boolean is32Bit() {
+    return is32Bit;
+  }
+}