src/share/vm/prims/whitebox.cpp

rev 8983 : 8222670: pathological case of JIT recompilation and code cache bloat
Summary: Prevent downgraded compilation tasks from recompiling.
Reviewed-by: thartmann, sgehwolf, phh, andrew

*** 1,7 ****
  /*
!  * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 631,640 ****
--- 631,659 ----
      mh->set_prev_time(0);
  #endif
    }
  WB_END
  
+ WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
+   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
+   CHECK_JNI_EXCEPTION(env);
+   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
+ 
+   MethodData* mdo = mh->method_data();
+   if (mdo == NULL) {
+     Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
+     mdo = mh->method_data();
+   }
+   mdo->init();
+   InvocationCounter* icnt = mdo->invocation_counter();
+   InvocationCounter* bcnt = mdo->backedge_counter();
+   // set i-counter according to AdvancedThresholdPolicy::is_method_profiled
+   // because SimpleThresholdPolicy::call_predicate_helper uses > in jdk8u, that's why we need to plus one.
+   icnt->set(InvocationCounter::wait_for_compile, Tier4MinInvocationThreshold + 1);
+   bcnt->set(InvocationCounter::wait_for_compile, Tier4CompileThreshold + 1);
+ WB_END
+ 
  template <typename T>
  static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
    if (name == NULL) {
      return false;
    }
*** 1117,1126 ****
--- 1136,1147 ----
        CC"(Ljava/lang/reflect/Executable;Z)Z",         (void*)&WB_TestSetForceInlineMethod},
    {CC"enqueueMethodForCompilation",
        CC"(Ljava/lang/reflect/Executable;II)Z",        (void*)&WB_EnqueueMethodForCompilation},
    {CC"clearMethodState",
        CC"(Ljava/lang/reflect/Executable;)V",          (void*)&WB_ClearMethodState},
+   {CC"markMethodProfiled",
+       CC"(Ljava/lang/reflect/Executable;)V",          (void*)&WB_MarkMethodProfiled},
    {CC"setBooleanVMFlag",   CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
    {CC"setIntxVMFlag",      CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
    {CC"setUintxVMFlag",     CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
    {CC"setUint64VMFlag",    CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
    {CC"setDoubleVMFlag",    CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},