# HG changeset patch
# User bmoloden
# Date 1430419673 25200
# Node ID e9a7f132cec373909649734546367821c0739bad
# Parent  7bc99c1a5feebbe3368e95ea8ce6f206f23590fb
8068272: Extend WhiteBox API with methods that check monitor state and force safepoint
Reviewed-by: kvn, iignatyev

diff -r 7bc99c1a5fee -r e9a7f132cec3 src/share/vm/prims/whitebox.cpp
--- a/src/share/vm/prims/whitebox.cpp	Thu Apr 30 11:45:20 2015 -0700
+++ b/src/share/vm/prims/whitebox.cpp	Thu Apr 30 11:47:53 2015 -0700
@@ -891,6 +891,16 @@
   return (jlong) MetaspaceGC::capacity_until_GC();
 WB_END
 
+WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
+  oop obj_oop = JNIHandles::resolve(obj);
+  return (jboolean) obj_oop->mark()->has_monitor();
+WB_END
+
+WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
+  VM_ForceSafepoint force_safepoint_op;
+  VMThread::execute(&force_safepoint_op);
+WB_END
+
 //Some convenience methods to deal with objects from java
 int WhiteBox::offset_for_field(const char* field_name, oop object,
     Symbol* signature_symbol) {
@@ -1076,6 +1086,8 @@
   {CC"getCPUFeatures",     CC"()Ljava/lang/String;",  (void*)&WB_GetCPUFeatures     },
   {CC"getNMethod",         CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
                                                       (void*)&WB_GetNMethod         },
+  {CC"isMonitorInflated",  CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated  },
+  {CC"forceSafepoint",     CC"()V",                   (void*)&WB_ForceSafepoint     },
 };
 
 #undef CC
diff -r 7bc99c1a5fee -r e9a7f132cec3 test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
--- a/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java	Thu Apr 30 11:45:20 2015 -0700
+++ b/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java	Thu Apr 30 11:47:53 2015 -0700
@@ -87,6 +87,8 @@
     return isClassAlive0(name.replace('.', '/'));
   }
   private native boolean isClassAlive0(String name);
+  public native boolean isMonitorInflated(Object obj);
+  public native void forceSafepoint();
 
   // Resource/Class Lookup Cache
   public native boolean classKnownToNotExist(ClassLoader loader, String name);