*** old/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java	Sat May  4 16:23:05 2019
--- new/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java	Sat May  4 16:23:03 2019

*** 610,623 ****
--- 610,628 ----
  
      /**
       * Writes {@code length} bytes from {@code bytes} starting at offset {@code offset} to HotSpot's
       * log stream.
       *
+      * @param flush specifies if the log stream should be flushed after writing
+      * @param canThrow specifies if an error in the {@code bytes}, {@code offset} or {@code length}
+      *            arguments should result in an exception or a negative return value
+      * @return 0 on success, -1 if {@code bytes == null && !canThrow}, -2 if {@code !canThrow} and
+      *         copying would cause access of data outside array bounds
       * @throws NullPointerException if {@code bytes == null}
       * @throws IndexOutOfBoundsException if copying would cause access of data outside array bounds
       */
!     native void writeDebugOutput(byte[] bytes, int offset, int length);
!     native int writeDebugOutput(byte[] bytes, int offset, int length, boolean flush, boolean canThrow);
  
      /**
       * Flush HotSpot's log stream.
       */
      native void flushDebugOutput();

*** 945,950 ****
--- 950,969 ----
       *
       * @return {@code false} if the speculation could not be appended to the list
       */
      native boolean addFailedSpeculation(long failedSpeculationsAddress, byte[] speculation);
  
+     /**
+      * @see HotSpotJVMCIRuntime#isCurrentThreadAttached()
+      */
+     native boolean isCurrentThreadAttached();
+ 
+     /**
+      * @see HotSpotJVMCIRuntime#attachCurrentThread
+      */
+     native boolean attachCurrentThread(boolean asDaemon);
+ 
+     /**
+      * @see HotSpotJVMCIRuntime#detachCurrentThread()
+      */
+     native void detachCurrentThread();
  }