rframe.cpp revision 0:a61af66fc99e 
1/*
2 * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25# include "incls/_precompiled.incl"
26
27#include "incls/_rframe.cpp.incl"
28
29static RFrame*const  noCaller    = (RFrame*) 0x1;               // no caller (i.e., initial frame)
30static RFrame*const  noCallerYet = (RFrame*) 0x0;               // caller not yet computed
31
32RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) :
33  _fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) {
34  _caller = (RFrame*)noCallerYet;
35  _invocations = 0;
36  _distance = 0;
37}
38
39void RFrame::set_distance(int d) {
40  assert(is_compiled() || d >= 0, "should be positive");
41  _distance = d;
42}
43
44InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
45: RFrame(fr, thread, callee) {
46  RegisterMap map(thread, false);
47  _vf     = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
48  _method = methodHandle(thread, _vf->method());
49  assert(   _vf->is_interpreted_frame(), "must be interpreted");
50  init();
51}
52
53InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m)
54: RFrame(fr, thread, NULL) {
55  RegisterMap map(thread, false);
56  _vf     = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
57  _method = m;
58
59  assert(   _vf->is_interpreted_frame(),  "must be interpreted");
60  init();
61}
62
63CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const  callee)
64: RFrame(fr, thread, callee) {
65  init();
66}
67
68CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread)
69: RFrame(fr, thread, NULL) {
70  init();
71}
72
73DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const  callee)
74: InterpretedRFrame(fr, thread, callee) {}
75
76RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const  callee) {
77  RFrame* rf;
78  int dist = callee ? callee->distance() : -1;
79  if (fr.is_interpreted_frame()) {
80    rf = new InterpretedRFrame(fr, thread, callee);
81    dist++;
82  } else if (fr.is_compiled_frame()) {
83    // Even deopted frames look compiled because the deopt
84    // is invisible until it happens.
85    rf = new CompiledRFrame(fr, thread, callee);
86  } else {
87    assert(false, "Unhandled frame type");
88  }
89  rf->set_distance(dist);
90  rf->init();
91  return rf;
92}
93
94RFrame* RFrame::caller() {
95  if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller;    // already computed caller
96
97  // caller not yet computed; do it now
98  if (_fr.is_first_java_frame()) {
99    _caller = (RFrame*)noCaller;
100    return NULL;
101  }
102
103  RegisterMap map(_thread, false);
104  frame sender = _fr.real_sender(&map);
105  if (sender.is_java_frame()) {
106    _caller = new_RFrame(sender, thread(), this);
107    return _caller;
108  }
109
110  // Real caller is not java related
111  _caller = (RFrame*)noCaller;
112  return NULL;
113}
114
115int InterpretedRFrame::cost() const {
116  return _method->code_size();    // fix this
117  //return _method->estimated_inline_cost(_receiverKlass);
118}
119
120int CompiledRFrame::cost() const {
121  nmethod* nm = top_method()->code();
122  if (nm != NULL) {
123    return nm->code_size();
124  } else {
125    return top_method()->code_size();
126  }
127}
128
129void CompiledRFrame::init() {
130  RegisterMap map(thread(), false);
131  vframe* vf = vframe::new_vframe(&_fr, &map, thread());
132  assert(vf->is_compiled_frame(), "must be compiled");
133  _nm = compiledVFrame::cast(vf)->code();
134  vf = vf->top();
135  _vf = javaVFrame::cast(vf);
136  _method = methodHandle(thread(), CodeCache::find_nmethod(_fr.pc())->method());
137  assert(_method(), "should have found a method");
138#ifndef PRODUCT
139  _invocations = _method->compiled_invocation_count();
140#endif
141}
142
143void InterpretedRFrame::init() {
144  _invocations = _method->invocation_count() + _method->backedge_count();
145}
146
147void RFrame::print(const char* kind) {
148#ifndef PRODUCT
149#ifdef COMPILER2
150  int cnt = top_method()->interpreter_invocation_count();
151#else
152  int cnt = top_method()->invocation_count();
153#endif
154  tty->print("%3d %s ", _num, is_interpreted() ? "I" : "C");
155  top_method()->print_short_name(tty);
156  tty->print_cr(": inv=%5d(%d) cst=%4d", _invocations, cnt, cost());
157#endif
158}
159
160void CompiledRFrame::print() {
161  RFrame::print("comp");
162}
163
164void InterpretedRFrame::print() {
165  RFrame::print("int.");
166}
167
168void DeoptimizedRFrame::print() {
169  RFrame::print("deopt.");
170}
171