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changeset 22254:7ec5eef84ecf

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Truffle/Instrumentation: RootNode implementations can now override a method to declare that there is no content that can be instrumented.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Fri, 25 Sep 2015 14:16:21 -0700
parents ffb52d4126bb
children e7643754d982
files truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java
diffstat 1 files changed, 11 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java	Fri Sep 25 12:10:32 2015 -0700
+++ b/truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java	Fri Sep 25 14:16:21 2015 -0700
@@ -165,7 +165,7 @@
      * stack) without prior knowledge of the language it has come from.
      *
      * Used for instance to determine the language of a <code>RootNode<code>:
-     * 
+     *
      * <pre>
      * <code>
      * rootNode.getExecutionContext().getLanguageShortName();
@@ -191,7 +191,16 @@
     }
 
     public final void applyInstrumentation() {
-        Node.ACCESSOR.probeAST(this);
+        if (isInstrumentable()) {
+            Node.ACCESSOR.probeAST(this);
+        }
+    }
+
+    /**
+     * Does this contain AST content that it is possible to instrument.
+     */
+    protected boolean isInstrumentable() {
+        return true;
     }
 
     /**