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diff src/share/vm/gc_implementation/g1/vm_operations_g1.cpp @ 20646:4e4ebe50c8e3

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8062036: ConcurrentMarkThread::slt may be invoked before ConcurrentMarkThread::makeSurrogateLockerThread causing intermittent crashes Summary: Suppress gc_alot during VM init, improve error for SLT uninitialized. Reviewed-by: jmasa, brutisso, tschatzl
author kbarrett
date Tue, 11 Nov 2014 13:39:00 -0500
parents d3fd73295885
children
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line diff
--- a/src/share/vm/gc_implementation/g1/vm_operations_g1.cpp	Mon Nov 17 16:36:09 2014 +0000
+++ b/src/share/vm/gc_implementation/g1/vm_operations_g1.cpp	Tue Nov 11 13:39:00 2014 -0500
@@ -213,8 +213,12 @@
   assert(_needs_pll, "don't call this otherwise");
   // The caller may block while communicating
   // with the SLT thread in order to acquire/release the PLL.
-  ConcurrentMarkThread::slt()->
-    manipulatePLL(SurrogateLockerThread::acquirePLL);
+  SurrogateLockerThread* slt = ConcurrentMarkThread::slt();
+  if (slt != NULL) {
+    slt->manipulatePLL(SurrogateLockerThread::acquirePLL);
+  } else {
+    SurrogateLockerThread::report_missing_slt();
+  }
 }
 
 void VM_CGC_Operation::release_and_notify_pending_list_lock() {