--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jvmci/jvmci.hpp	Wed May 01 12:31:29 2019 -0700
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2017, 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef SHARE_JVMCI_JVMCI_HPP
+#define SHARE_JVMCI_JVMCI_HPP
+
+#include "compiler/compilerDefinitions.hpp"
+#include "utilities/exceptions.hpp"
+
+class BoolObjectClosure;
+class constantPoolHandle;
+class JavaThread;
+class JVMCIEnv;
+class JVMCIRuntime;
+class Metadata;
+class MetadataHandleBlock;
+class OopClosure;
+class OopStorage;
+
+struct _jmetadata;
+typedef struct _jmetadata *jmetadata;
+
+class JVMCI : public AllStatic {
+  friend class JVMCIRuntime;
+  friend class JVMCIEnv;
+
+ private:
+  // Handles to objects in the HotSpot heap.
+  static OopStorage* _object_handles;
+
+  static OopStorage* object_handles();
+
+  // Handles to Metadata objects.
+  static MetadataHandleBlock* _metadata_handles;
+
+  // Access to the HotSpotJVMCIRuntime used by the CompileBroker.
+  static JVMCIRuntime* _compiler_runtime;
+
+  // Access to the HotSpotJVMCIRuntime used by Java code running on the
+  // HotSpot heap. It will be the same as _compiler_runtime if
+  // UseJVMCINativeLibrary is false
+  static JVMCIRuntime* _java_runtime;
+
+ public:
+  enum CodeInstallResult {
+     ok,
+     dependencies_failed,
+     dependencies_invalid,
+     cache_full,
+     code_too_large
+  };
+
+  static void do_unloading(bool unloading_occurred);
+
+  static void metadata_do(void f(Metadata*));
+
+  static void oops_do(OopClosure* f);
+
+  static void shutdown();
+
+  static bool shutdown_called();
+
+  static bool is_compiler_initialized();
+
+  /**
+   * Determines if the VM is sufficiently booted to initialize JVMCI.
+   */
+  static bool can_initialize_JVMCI();
+
+  static void initialize_globals();
+
+  static void initialize_compiler(TRAPS);
+
+  static jobject make_global(const Handle& obj);
+  static bool is_global_handle(jobject handle);
+
+  static jmetadata allocate_handle(const methodHandle& handle);
+  static jmetadata allocate_handle(const constantPoolHandle& handle);
+
+  static void release_handle(jmetadata handle);
+
+  static JVMCIRuntime* compiler_runtime() { return _compiler_runtime; }
+  static JVMCIRuntime* java_runtime()     { return _java_runtime; }
+};
+
+#endif // SHARE_JVMCI_JVMCI_HPP