Mercurial > hg > truffle
diff src/share/vm/runtime/rframe.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/runtime/rframe.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,117 @@ +/* + * Copyright 1997-2000 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// rframes ("recompiler frames") decorate stack frames with some extra information +// needed by the recompiler. The recompiler views the stack (at the time of recompilation) +// as a list of rframes. + +class RFrame : public ResourceObj { + protected: + const frame _fr; // my frame + JavaThread* const _thread; // thread where frame resides. + RFrame* _caller; // caller / callee rframes (or NULL) + RFrame*const _callee; + const int _num; // stack frame number (0 = most recent) + int _invocations; // current invocation estimate (for this frame) + // (i.e., how often was this frame called) + int _distance; // recompilation search "distance" (measured in # of interpreted frames) + + RFrame(frame fr, JavaThread* thread, RFrame*const callee); + virtual void init() = 0; // compute invocations, loopDepth, etc. + void print(const char* name); + + public: + + static RFrame* new_RFrame(frame fr, JavaThread* thread, RFrame*const callee); + + virtual bool is_interpreted() const { return false; } + virtual bool is_compiled() const { return false; } + int distance() const { return _distance; } + void set_distance(int d); + int invocations() const { return _invocations; } + int num() const { return _num; } + frame fr() const { return _fr; } + JavaThread* thread() const { return _thread; } + virtual int cost() const = 0; // estimated inlining cost (size) + virtual methodHandle top_method() const = 0; + virtual javaVFrame* top_vframe() const = 0; + virtual nmethod* nm() const { ShouldNotCallThis(); return NULL; } + + RFrame* caller(); + RFrame* callee() const { return _callee; } + RFrame* parent() const; // rframe containing lexical scope (if any) + virtual void print() = 0; + + static int computeSends(methodOop m); + static int computeSends(nmethod* nm); + static int computeCumulSends(methodOop m); + static int computeCumulSends(nmethod* nm); +}; + +class CompiledRFrame : public RFrame { // frame containing a compiled method + protected: + nmethod* _nm; + javaVFrame* _vf; // top vframe; may be NULL (for most recent frame) + methodHandle _method; // top method + + CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee); + void init(); + friend class RFrame; + + public: + CompiledRFrame(frame fr, JavaThread* thread); // for nmethod triggering its counter (callee == NULL) + bool is_compiled() const { return true; } + methodHandle top_method() const { return _method; } + javaVFrame* top_vframe() const { return _vf; } + nmethod* nm() const { return _nm; } + int cost() const; + void print(); +}; + +class InterpretedRFrame : public RFrame { // interpreter frame + protected: + javaVFrame* _vf; // may be NULL (for most recent frame) + methodHandle _method; + + InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee); + void init(); + friend class RFrame; + + public: + InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter + bool is_interpreted() const { return true; } + methodHandle top_method() const { return _method; } + javaVFrame* top_vframe() const { return _vf; } + int cost() const; + void print(); +}; + +// treat deoptimized frames as interpreted +class DeoptimizedRFrame : public InterpretedRFrame { + protected: + DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee); + friend class RFrame; + public: + void print(); +};