commit 280f32b095f55f24dc557f9a9067d223901214ce
author Andreas Gampe <agampe@google.com> Tue Sep 27 18:45:02 2016 -0700
committer Andreas Gampe <agampe@google.com> Tue Sep 27 18:45:02 2016 -0700
tree 11a553b22c43d7903cb4f349abbddb80b411f30f
parent d3997bd98a808c6b166b9c53eef523fc805ea2c2

ART: Dump referenced type in IRT overflows

When the runtime dumps a reference table, e.g., when aborting for
an overflow, dump the type of stored referents for reference types
to aid in debugging leaks.

Bug: 31600693
Change-Id: Ia892dc84ca8827dd93a8b75d6f571c392f94859c

runtime/reference_table.cc

diff --git a/runtime/reference_table.cc b/runtime/reference_table.cc
index 49b6a38..d4bd6dd 100644
--- a/runtime/reference_table.cc
+++ b/runtime/reference_table.cc
@@ -192,6 +192,13 @@
       } else {
         StringAppendF(&extras, " \"%.16s... (%d chars)", utf8.c_str(), s->GetLength());
       }
+    } else if (ref->IsReferenceInstance()) {
+      mirror::Object* referent = ref->AsReference()->GetReferent();
+      if (referent == nullptr) {
+        extras = " (storing null)";
+      } else {
+        extras = StringPrintf(" (storing a %s)", PrettyTypeOf(referent).c_str());
+      }
     }
     os << StringPrintf("    %5d: ", idx) << ref << " " << className << extras << "\n";
   }