Mercurial > hg > truffle

diff truffle/com.oracle.truffle.api.profiles/src/com/oracle/truffle/api/profiles/Profile.java @ 22504:d80a5ff56f51

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Storing the profiling enabled information in a static field; checking it only once; shielding against missing method in the TruffleRuntime interface
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 17 Dec 2015 13:45:37 +0100
parents 828c67903db2
children 1133c68332ef
line wrap: on
line diff
--- a/truffle/com.oracle.truffle.api.profiles/src/com/oracle/truffle/api/profiles/Profile.java	Thu Dec 17 10:01:38 2015 +0100
+++ b/truffle/com.oracle.truffle.api.profiles/src/com/oracle/truffle/api/profiles/Profile.java	Thu Dec 17 13:45:37 2015 +0100
@@ -27,6 +27,7 @@
 import com.oracle.truffle.api.Assumption;
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
+import com.oracle.truffle.api.Truffle;
 import com.oracle.truffle.api.TruffleRuntime;
 import com.oracle.truffle.api.nodes.Node;
 import com.oracle.truffle.api.nodes.NodeCloneable;
@@ -90,6 +91,21 @@
  * @see Assumption
  */
 public abstract class Profile extends NodeCloneable {
+    private static final boolean ENABLED;
+    static {
+        boolean enabled;
+        try {
+            enabled = Truffle.getRuntime().isProfilingEnabled();
+        } catch (NoSuchMethodError ex) {
+            // running on old version of Graal
+            enabled = true;
+        }
+        ENABLED = enabled;
+    }
+
+    static boolean isProfilingEnabled() {
+        return ENABLED;
+    }
 
     Profile() {
         /* We don't to allow custom profiles. We want to evolve this API further first. Sorry. */