src/share/vm/prims/whitebox.cpp

rev 10354 : 8150646: Add support for blocking compiles though whitebox API
Reviewed-by: kvn, ppunegov, simonis, neliasso
Contributed-by: nils.eliasson@oracle.com, volker.simonis@gmail.com

@@ -28,10 +28,11 @@
 
 #include "classfile/classLoaderData.hpp"
 #include "classfile/stringTable.hpp"
 #include "code/codeCache.hpp"
 #include "compiler/methodMatcher.hpp"
+#include "compiler/directivesParser.hpp"
 #include "jvmtifiles/jvmtiEnv.hpp"
 #include "memory/metadataFactory.hpp"
 #include "memory/metaspaceShared.hpp"
 #include "memory/universe.hpp"
 #include "oops/constantPool.hpp"

@@ -1500,10 +1501,27 @@
       }
     }
   }
 }
 
+WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
+  // can't be in VM when we call JNI
+  ThreadToNativeFromVM ttnfv(thread);
+  const char* dir = env->GetStringUTFChars(compDirect, NULL);
+  int ret;
+  {
+    ThreadInVMfromNative ttvfn(thread); // back to VM
+    ret = DirectivesParser::parse_string(dir, tty);
+  }
+  env->ReleaseStringUTFChars(compDirect, dir);
+  return (jint) ret;
+WB_END
+
+WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
+  DirectivesStack::pop(count);
+WB_END
+
 #define CC (char*)
 
 static JNINativeMethod methods[] = {
   {CC"getObjectAddress0",                CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress  },
   {CC"getObjectSize0",                   CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize     },

@@ -1675,10 +1693,13 @@
       CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
                                                       (void*)&WB_GetMethodStringOption},
   {CC"isShared",           CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
   {CC"areSharedStringsIgnored",           CC"()Z",    (void*)&WB_AreSharedStringsIgnored },
   {CC"clearInlineCaches",  CC"()V",                   (void*)&WB_ClearInlineCaches },
+  {CC"addCompilerDirective",    CC"(Ljava/lang/String;)I",
+                                                      (void*)&WB_AddCompilerDirective },
+  {CC"removeCompilerDirective", CC"(I)V",             (void*)&WB_RemoveCompilerDirective },
 };
 
 #undef CC
 
 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))