Add JRuby::Util::cache_stats to fix #4384.

jruby · Dec 6, 2017 · 4a4afa7 · 4a4afa7
1 parent fd1f47a
commit 4a4afa7
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/core/src/main/java/org/jruby/ext/jruby/JRubyUtilLibrary.java b/core/src/main/java/org/jruby/ext/jruby/JRubyUtilLibrary.java
@@ -36,6 +36,7 @@
 import org.jruby.Ruby;
 import org.jruby.RubyArray;
 import org.jruby.RubyBoolean;
+import org.jruby.RubyHash;
 import org.jruby.RubyModule;
 import org.jruby.RubyString;
 import org.jruby.anno.JRubyMethod;
@@ -101,6 +102,17 @@ public static IRubyObject getClassLoaderResources(IRubyObject recv, IRubyObject
         return runtime.newEmptyArray();
     }
 
+    @JRubyMethod(name = "cache_stats", module = true)
+    public static IRubyObject cache_stats(ThreadContext context, IRubyObject self) {
+        Ruby runtime = context.runtime;
+
+        RubyHash stat = RubyHash.newHash(runtime);
+        stat.op_aset(context, runtime.newSymbol("method_invalidation_count"), runtime.newFixnum(runtime.getCaches().getMethodInvalidationCount()));
+        stat.op_aset(context, runtime.newSymbol("constant_invalidation_count"), runtime.newFixnum(runtime.getCaches().getConstantInvalidationCount()));
+
+        return stat;
+    }
+
     public static class StringUtils {
         @JRubyMethod
         public static IRubyObject unseeded_hash(ThreadContext context, IRubyObject recv) {