1 /*
2 * Copyright (c) 1997, 2000, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // rframes ("recompiler frames") decorate stack frames with some extra information
26 // needed by the recompiler. The recompiler views the stack (at the time of recompilation)
27 // as a list of rframes.
28
29 class RFrame : public ResourceObj {
30 protected:
31 const frame _fr; // my frame
32 JavaThread* const _thread; // thread where frame resides.
33 RFrame* _caller; // caller / callee rframes (or NULL)
34 RFrame*const _callee;
35 const int _num; // stack frame number (0 = most recent)
36 int _invocations; // current invocation estimate (for this frame)
37 // (i.e., how often was this frame called)
38 int _distance; // recompilation search "distance" (measured in # of interpreted frames)
39
40 RFrame(frame fr, JavaThread* thread, RFrame*const callee);
41 virtual void init() = 0; // compute invocations, loopDepth, etc.
42 void print(const char* name);
43
44 public:
98 void init();
99 friend class RFrame;
100
101 public:
102 InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter
103 bool is_interpreted() const { return true; }
104 methodHandle top_method() const { return _method; }
105 javaVFrame* top_vframe() const { return _vf; }
106 int cost() const;
107 void print();
108 };
109
110 // treat deoptimized frames as interpreted
111 class DeoptimizedRFrame : public InterpretedRFrame {
112 protected:
113 DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
114 friend class RFrame;
115 public:
116 void print();
117 };
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1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_RUNTIME_RFRAME_HPP
26 #define SHARE_VM_RUNTIME_RFRAME_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/frame.inline.hpp"
30
31 // rframes ("recompiler frames") decorate stack frames with some extra information
32 // needed by the recompiler. The recompiler views the stack (at the time of recompilation)
33 // as a list of rframes.
34
35 class RFrame : public ResourceObj {
36 protected:
37 const frame _fr; // my frame
38 JavaThread* const _thread; // thread where frame resides.
39 RFrame* _caller; // caller / callee rframes (or NULL)
40 RFrame*const _callee;
41 const int _num; // stack frame number (0 = most recent)
42 int _invocations; // current invocation estimate (for this frame)
43 // (i.e., how often was this frame called)
44 int _distance; // recompilation search "distance" (measured in # of interpreted frames)
45
46 RFrame(frame fr, JavaThread* thread, RFrame*const callee);
47 virtual void init() = 0; // compute invocations, loopDepth, etc.
48 void print(const char* name);
49
50 public:
104 void init();
105 friend class RFrame;
106
107 public:
108 InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter
109 bool is_interpreted() const { return true; }
110 methodHandle top_method() const { return _method; }
111 javaVFrame* top_vframe() const { return _vf; }
112 int cost() const;
113 void print();
114 };
115
116 // treat deoptimized frames as interpreted
117 class DeoptimizedRFrame : public InterpretedRFrame {
118 protected:
119 DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee);
120 friend class RFrame;
121 public:
122 void print();
123 };
124
125 #endif // SHARE_VM_RUNTIME_RFRAME_HPP
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