8277213: CompileTask_lock is acquired out of order with MethodCompile…

…Queue_lock Reviewed-by: rbackman, coleenp
openjdk · Nov 19, 2021 · f34f119 · f34f119 · openjdk-notifier · Nov 19, 2021
1 parent 47564ca
commit f34f119
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/hotspot/share/compiler/compileTask.hpp b/src/hotspot/share/compiler/compileTask.hpp
@@ -104,7 +104,8 @@ class CompileTask : public CHeapObj<mtCompiler> {
 
  public:
   CompileTask() : _failure_reason(NULL), _failure_reason_on_C_heap(false) {
-    _lock = new Monitor(Mutex::safepoint, "CompileTask_lock");
+    // May hold MethodCompileQueue_lock
+    _lock = new Monitor(Mutex::safepoint-1, "CompileTask_lock");
   }
 
   void initialize(int compile_id, const methodHandle& method, int osr_bci, int comp_level,