# HG changeset patch
# User Rene Schuenemann <rene.schuenemann@gmail.com>
# Date 1527684377 -7200
#      Wed May 30 14:46:17 2018 +0200
# Node ID 1a1a8a53c137928dffbe4e14e2bb3df5aeb0b286
# Parent  48d4abe945f186e371633fcabee5aeb20d44cd4b
8204477: Count linkage errors and print in Exceptions::print_exception_counts_on_error

diff --git a/src/hotspot/share/utilities/exceptions.cpp b/src/hotspot/share/utilities/exceptions.cpp
--- a/src/hotspot/share/utilities/exceptions.cpp
+++ b/src/hotspot/share/utilities/exceptions.cpp
@@ -37,6 +37,7 @@
 #include "runtime/os.hpp"
 #include "runtime/thread.inline.hpp"
 #include "runtime/threadCritical.hpp"
+#include "runtime/atomic.hpp"
 #include "utilities/events.hpp"
 #include "utilities/exceptions.hpp"
 
@@ -151,6 +152,10 @@
     count_out_of_memory_exceptions(h_exception);
   }
 
+  if (h_exception->is_a(SystemDictionary::LinkageError_klass())) {
+    Atomic::inc(&_linkage_errors);
+  }
+
   assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable");
 
   // set the pending exception
@@ -425,6 +430,7 @@
 
 // Exception counting for hs_err file
 volatile int Exceptions::_stack_overflow_errors = 0;
+volatile int Exceptions::_linkage_errors = 0;
 volatile int Exceptions::_out_of_memory_error_java_heap_errors = 0;
 volatile int Exceptions::_out_of_memory_error_metaspace_errors = 0;
 volatile int Exceptions::_out_of_memory_error_class_metaspace_errors = 0;
@@ -458,6 +464,9 @@
   if (_stack_overflow_errors > 0) {
     st->print_cr("StackOverflowErrors=%d", _stack_overflow_errors);
   }
+  if (_linkage_errors > 0) {
+    st->print_cr("LinkageErrors=%d", _linkage_errors);
+  }
 }
 
 // Implementation of ExceptionMark
diff --git a/src/hotspot/share/utilities/exceptions.hpp b/src/hotspot/share/utilities/exceptions.hpp
--- a/src/hotspot/share/utilities/exceptions.hpp
+++ b/src/hotspot/share/utilities/exceptions.hpp
@@ -108,6 +108,9 @@
   static volatile int _out_of_memory_error_java_heap_errors;
   static volatile int _out_of_memory_error_metaspace_errors;
   static volatile int _out_of_memory_error_class_metaspace_errors;
+
+  // Count linkage errors
+  static volatile int _linkage_errors;
  public:
   // this enum is defined to indicate whether it is safe to
   // ignore the encoding scheme of the original message string.