1 /*
2 * Copyright (c) 1999, 2006, 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 // ciCallProfile
26 //
27 // This class is used to determine the frequently called method
28 // at some call site
29 class ciCallProfile : StackObj {
30 private:
31 // Fields are initialized directly by ciMethod::call_profile_at_bci.
32 friend class ciMethod;
33
34 enum { MorphismLimit = 2 }; // Max call site's morphism we care about
35 int _limit; // number of receivers have been determined
36 int _morphism; // determined call site's morphism
37 int _count; // # times has this call been executed
38 int _receiver_count[MorphismLimit + 1]; // # times receivers have been seen
39 ciMethod* _method[MorphismLimit + 1]; // receivers methods
40 ciKlass* _receiver[MorphismLimit + 1]; // receivers (exact)
41
42 ciCallProfile() {
43 _limit = 0;
44 _morphism = 0;
56 int morphism() { return _morphism; }
57
58 int count() { return _count; }
59 int receiver_count(int i) {
60 assert(i < _limit, "out of Call Profile MorphismLimit");
61 return _receiver_count[i];
62 }
63 float receiver_prob(int i) {
64 assert(i < _limit, "out of Call Profile MorphismLimit");
65 return (float)_receiver_count[i]/(float)_count;
66 }
67 ciMethod* method(int i) {
68 assert(i < _limit, "out of Call Profile MorphismLimit");
69 return _method[i];
70 }
71 ciKlass* receiver(int i) {
72 assert(i < _limit, "out of Call Profile MorphismLimit");
73 return _receiver[i];
74 }
75 };
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1 /*
2 * Copyright (c) 1999, 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_CI_CICALLPROFILE_HPP
26 #define SHARE_VM_CI_CICALLPROFILE_HPP
27
28 #include "ci/ciClassList.hpp"
29
30 // ciCallProfile
31 //
32 // This class is used to determine the frequently called method
33 // at some call site
34 class ciCallProfile : StackObj {
35 private:
36 // Fields are initialized directly by ciMethod::call_profile_at_bci.
37 friend class ciMethod;
38
39 enum { MorphismLimit = 2 }; // Max call site's morphism we care about
40 int _limit; // number of receivers have been determined
41 int _morphism; // determined call site's morphism
42 int _count; // # times has this call been executed
43 int _receiver_count[MorphismLimit + 1]; // # times receivers have been seen
44 ciMethod* _method[MorphismLimit + 1]; // receivers methods
45 ciKlass* _receiver[MorphismLimit + 1]; // receivers (exact)
46
47 ciCallProfile() {
48 _limit = 0;
49 _morphism = 0;
61 int morphism() { return _morphism; }
62
63 int count() { return _count; }
64 int receiver_count(int i) {
65 assert(i < _limit, "out of Call Profile MorphismLimit");
66 return _receiver_count[i];
67 }
68 float receiver_prob(int i) {
69 assert(i < _limit, "out of Call Profile MorphismLimit");
70 return (float)_receiver_count[i]/(float)_count;
71 }
72 ciMethod* method(int i) {
73 assert(i < _limit, "out of Call Profile MorphismLimit");
74 return _method[i];
75 }
76 ciKlass* receiver(int i) {
77 assert(i < _limit, "out of Call Profile MorphismLimit");
78 return _receiver[i];
79 }
80 };
81
82 #endif // SHARE_VM_CI_CICALLPROFILE_HPP
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