1 files changed, 125 insertions, 0 deletions
diff --git a/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java b/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java
new file mode 100644
index 0000000..f0dbe8b
--- /dev/null
+++ b/src/java/com/sun/gluegen/runtime/ProcAddressHelper.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2003-2005 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;
+
+import java.security.*;
+
+// Debugging only
+import java.io.*;
+
+/** Helper class containing constants and methods to assist with the
+    manipulation of auto-generated ProcAddressTables. */
+
+public class ProcAddressHelper {
+  public static final String PROCADDRESS_VAR_PREFIX = "_addressof_";
+  protected static boolean DEBUG;
+  protected static String DEBUG_PREFIX;
+  protected static int debugNum;
+
+  static {
+    AccessController.doPrivileged(new PrivilegedAction() {
+        public Object run() {
+          DEBUG = (System.getProperty("gluegen.debug.ProcAddressHelper") != null);
+          if (DEBUG) {
+            DEBUG_PREFIX = System.getProperty("gluegen.debug.ProcAddressHelper.prefix");
+          }
+          return null;
+        }
+      });
+  }
+
+  protected static PrintStream getDebugOutStream() {
+    PrintStream out = null;
+    if (DEBUG) {
+      if (DEBUG_PREFIX != null) {
+        try {
+          out = new PrintStream(new BufferedOutputStream(new FileOutputStream(DEBUG_PREFIX + File.separatorChar +
+                                                                              "procaddresshelper-" + (++debugNum) + ".txt")));
+        } catch (IOException e) {
+          e.printStackTrace();
+          out = System.err;
+        }
+      } else {
+        out = System.err;
+      }
+    }
+    return out;
+  }
+
+  public static void resetProcAddressTable(Object table,
+                                           DynamicLookupHelper lookup) throws RuntimeException {
+    Class tableClass = table.getClass();
+    java.lang.reflect.Field[] fields = tableClass.getFields();
+    PrintStream dout = getDebugOutStream();
+    
+    if (DEBUG) {
+      dout.println("ProcAddressHelper.resetProcAddressTable(" + table.getClass().getName() + ")");
+    }
+    for (int i = 0; i < fields.length; ++i) {
+      String addressFieldName = fields[i].getName();
+      if (!addressFieldName.startsWith(ProcAddressHelper.PROCADDRESS_VAR_PREFIX)) {
+        // not a proc address variable
+        continue;
+      }
+      int startOfMethodName = ProcAddressHelper.PROCADDRESS_VAR_PREFIX.length();
+      String funcName = addressFieldName.substring(startOfMethodName);
+      try {
+        java.lang.reflect.Field addressField = fields[i];
+        assert(addressField.getType() == Long.TYPE);
+        long newProcAddress = lookup.dynamicLookupFunction(funcName);
+        // set the current value of the proc address variable in the table object
+        addressField.setLong(table, newProcAddress); 
+        if (DEBUG) {
+          dout.println("  " + addressField.getName() + " -> 0x" + Long.toHexString(newProcAddress));
+        }
+      } catch (Exception e) {
+        throw new RuntimeException("Can not get proc address for method \"" +
+                                   funcName + "\": Couldn't set value of field \"" + addressFieldName +
+                                   "\" in class " + tableClass.getName(), e);
+      }
+    }
+    if (DEBUG) {
+      dout.flush();
+      if (DEBUG_PREFIX != null) {
+        dout.close();
+      }
+    }
+  }
+}