--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/shark/sharkCompiler.hpp	Wed Aug 11 05:51:21 2010 -0700
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2008, 2009 Red Hat, Inc.
+ * 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.
+ *
+ */
+
+class SharkContext;
+
+class SharkCompiler : public AbstractCompiler {
+ public:
+  // Creation
+  SharkCompiler();
+
+  // Name of this compiler
+  const char *name()     { return "shark"; }
+
+  // Missing feature tests
+  bool supports_native() { return true; }
+  bool supports_osr()    { return true; }
+
+  // Customization
+  bool needs_adapters()  { return false; }
+  bool needs_stubs()     { return false; }
+
+  // Initialization
+  void initialize();
+
+  // Compile a normal (bytecode) method and install it in the VM
+  void compile_method(ciEnv* env, ciMethod* target, int entry_bci);
+
+  // Generate a wrapper for a native (JNI) method
+  nmethod* generate_native_wrapper(MacroAssembler* masm,
+                                   methodHandle    target,
+                                   BasicType*      arg_types,
+                                   BasicType       return_type);
+
+  // Free compiled methods (and native wrappers)
+  void free_compiled_method(address code);
+
+  // Each thread generating IR needs its own context.  The normal
+  // context is used for bytecode methods, and is protected from
+  // multiple simultaneous accesses by being restricted to the
+  // compiler thread.  The native context is used for JNI methods,
+  // and is protected from multiple simultaneous accesses by the
+  // adapter handler library lock.
+ private:
+  SharkContext* _normal_context;
+  SharkContext* _native_context;
+
+ public:
+  SharkContext* context() const {
+    if (JavaThread::current()->is_Compiler_thread()) {
+      return _normal_context;
+    }
+    else {
+      assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be");
+      return _native_context;
+    }
+  }
+
+  // The LLVM execution engine is the JIT we use to generate native
+  // code.  It is thread safe, but we need to protect it with a lock
+  // of our own because otherwise LLVM's lock and HotSpot's locks
+  // interleave and deadlock.  The SharkMemoryManager is not thread
+  // safe, and is protected by the same lock as the execution engine.
+ private:
+  Monitor*               _execution_engine_lock;
+  SharkMemoryManager*    _memory_manager;
+  llvm::ExecutionEngine* _execution_engine;
+
+ private:
+  Monitor* execution_engine_lock() const {
+    return _execution_engine_lock;
+  }
+  SharkMemoryManager* memory_manager() const {
+    assert(execution_engine_lock()->owned_by_self(), "should be");
+    return _memory_manager;
+  }
+  llvm::ExecutionEngine* execution_engine() const {
+    assert(execution_engine_lock()->owned_by_self(), "should be");
+    return _execution_engine;
+  }
+
+  // Global access
+ public:
+  static SharkCompiler* compiler() {
+    AbstractCompiler *compiler =
+      CompileBroker::compiler(CompLevel_fast_compile);
+    assert(compiler->is_shark() && compiler->is_initialized(), "should be");
+    return (SharkCompiler *) compiler;
+  }
+
+  // Helpers
+ private:
+  static const char* methodname(const char* klass, const char* method);
+  void generate_native_code(SharkEntry*     entry,
+                            llvm::Function* function,
+                            const char*     name);
+  void free_queued_methods();
+};