1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/runtime/rframe.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,117 @@
1.4 +/*
1.5 + * Copyright 1997-2000 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// rframes ("recompiler frames") decorate stack frames with some extra information
1.29 +// needed by the recompiler. The recompiler views the stack (at the time of recompilation)
1.30 +// as a list of rframes.
1.31 +
1.32 +class RFrame : public ResourceObj {
1.33 + protected:
1.34 + const frame _fr; // my frame
1.35 + JavaThread* const _thread; // thread where frame resides.
1.36 + RFrame* _caller; // caller / callee rframes (or NULL)
1.37 + RFrame*const _callee;
1.38 + const int _num; // stack frame number (0 = most recent)
1.39 + int _invocations; // current invocation estimate (for this frame)
1.40 + // (i.e., how often was this frame called)
1.41 + int _distance; // recompilation search "distance" (measured in # of interpreted frames)
1.42 +
1.43 + RFrame(frame fr, JavaThread* thread, RFrame*const callee);
1.44 + virtual void init() = 0; // compute invocations, loopDepth, etc.
1.45 + void print(const char* name);
1.46 +
1.47 + public:
1.48 +
1.49 + static RFrame* new_RFrame(frame fr, JavaThread* thread, RFrame*const callee);
1.50 +
1.51 + virtual bool is_interpreted() const { return false; }
1.52 + virtual bool is_compiled() const { return false; }
1.53 + int distance() const { return _distance; }
1.54 + void set_distance(int d);
1.55 + int invocations() const { return _invocations; }
1.56 + int num() const { return _num; }
1.57 + frame fr() const { return _fr; }
1.58 + JavaThread* thread() const { return _thread; }
1.59 + virtual int cost() const = 0; // estimated inlining cost (size)
1.60 + virtual methodHandle top_method() const = 0;
1.61 + virtual javaVFrame* top_vframe() const = 0;
1.62 + virtual nmethod* nm() const { ShouldNotCallThis(); return NULL; }
1.63 +
1.64 + RFrame* caller();
1.65 + RFrame* callee() const { return _callee; }
1.66 + RFrame* parent() const; // rframe containing lexical scope (if any)
1.67 + virtual void print() = 0;
1.68 +
1.69 + static int computeSends(methodOop m);
1.70 + static int computeSends(nmethod* nm);
1.71 + static int computeCumulSends(methodOop m);
1.72 + static int computeCumulSends(nmethod* nm);
1.73 +};
1.74 +
1.75 +class CompiledRFrame : public RFrame { // frame containing a compiled method
1.76 + protected:
1.77 + nmethod* _nm;
1.78 + javaVFrame* _vf; // top vframe; may be NULL (for most recent frame)
1.79 + methodHandle _method; // top method
1.80 +
1.81 + CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee);
1.82 + void init();
1.83 + friend class RFrame;
1.84 +
1.85 + public:
1.86 + CompiledRFrame(frame fr, JavaThread* thread); // for nmethod triggering its counter (callee == NULL)
1.87 + bool is_compiled() const { return true; }
1.88 + methodHandle top_method() const { return _method; }
1.89 + javaVFrame* top_vframe() const { return _vf; }
1.90 + nmethod* nm() const { return _nm; }
1.91 + int cost() const;
1.92 + void print();
1.93 +};
1.94 +
1.95 +class InterpretedRFrame : public RFrame { // interpreter frame
1.96 + protected:
1.97 + javaVFrame* _vf; // may be NULL (for most recent frame)
1.98 + methodHandle _method;
1.99 +
1.100 + InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
1.101 + void init();
1.102 + friend class RFrame;
1.103 +
1.104 + public:
1.105 + InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter
1.106 + bool is_interpreted() const { return true; }
1.107 + methodHandle top_method() const { return _method; }
1.108 + javaVFrame* top_vframe() const { return _vf; }
1.109 + int cost() const;
1.110 + void print();
1.111 +};
1.112 +
1.113 +// treat deoptimized frames as interpreted
1.114 +class DeoptimizedRFrame : public InterpretedRFrame {
1.115 + protected:
1.116 + DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
1.117 + friend class RFrame;
1.118 + public:
1.119 + void print();
1.120 +};
