Mercurial > hg > truffle
annotate src/share/vm/utilities/xmlstream.hpp @ 9126:bc26f978b0ce
HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly
don't use the (wrong) cached value, but ask the runtime on each request.
Fixes regression on xml.* benchmarks @ specjvm2008. The problem was:
After the constructor of Object was deoptimized due to an assumption violation,
it was recompiled again after some time. However, on recompilation, the value
of hasFinalizeSubclass for the class was not updated and it was compiled again
with a, now wrong, assumption, which then triggers deoptimization again.
This was repeated until it hit the recompilation limit (defined by
PerMethodRecompilationCutoff), and therefore only executed by the interpreter
from now on, causing the performance regression.
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Mon, 15 Apr 2013 19:54:58 +0200 |
parents | da91efe96a93 |
children | 78bbf4d43a14 |
rev | line source |
---|---|
0 | 1 /* |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_UTILITIES_XMLSTREAM_HPP |
26 #define SHARE_VM_UTILITIES_XMLSTREAM_HPP | |
27 | |
28 #include "runtime/handles.hpp" | |
29 #include "utilities/ostream.hpp" | |
30 | |
0 | 31 class xmlStream; |
32 class defaultStream; | |
33 | |
34 // Sub-stream for writing quoted text, as opposed to markup. | |
35 // Characters written to this stream are subject to quoting, | |
36 // as '<' => "<", etc. | |
37 class xmlTextStream : public outputStream { | |
38 friend class xmlStream; | |
39 friend class defaultStream; // tty | |
40 private: | |
41 | |
42 xmlStream* _outer_xmlStream; | |
43 | |
44 xmlTextStream() { _outer_xmlStream = NULL; } | |
45 | |
46 public: | |
47 virtual void flush(); // _outer.flush(); | |
48 virtual void write(const char* str, size_t len); // _outer->write_text() | |
49 }; | |
50 | |
51 | |
52 // Output stream for writing XML-structured logs. | |
53 // To write markup, use special calls elem, head/tail, etc. | |
54 // Use the xmlStream::text() stream to write unmarked text. | |
55 // Text written that way will be quoted as necessary using '<', etc. | |
56 // Characters written directly to an xmlStream via print_cr, etc., | |
57 // are directly written to the encapsulated stream, xmlStream::out(). | |
58 // This can be used to produce markup directly, character by character. | |
59 // (Such writes are not checked for markup syntax errors.) | |
60 | |
61 class xmlStream : public outputStream { | |
62 friend class defaultStream; // tty | |
63 public: | |
64 enum MarkupState { BODY, // after end_head() call, in text | |
65 HEAD, // after begin_head() call, in attrs | |
66 ELEM }; // after begin_elem() call, in attrs | |
67 | |
68 protected: | |
69 outputStream* _out; // file stream by which it goes | |
70 julong _last_flush; // last position of flush | |
71 MarkupState _markup_state; // where in the elem/head/tail dance | |
72 outputStream* _text; // text stream | |
73 xmlTextStream _text_init; | |
74 | |
75 // for subclasses | |
76 xmlStream() {} | |
77 void initialize(outputStream* out); | |
78 | |
79 // protect this from public use: | |
80 outputStream* out() { return _out; } | |
81 | |
82 // helpers for writing XML elements | |
83 void va_tag(bool push, const char* format, va_list ap); | |
84 virtual void see_tag(const char* tag, bool push) NOT_DEBUG({}); | |
85 virtual void pop_tag(const char* tag) NOT_DEBUG({}); | |
86 | |
87 #ifdef ASSERT | |
88 // in debug mode, we verify matching of opening and closing tags | |
89 int _element_depth; // number of unfinished elements | |
90 char* _element_close_stack_high; // upper limit of down-growing stack | |
91 char* _element_close_stack_low; // upper limit of down-growing stack | |
92 char* _element_close_stack_ptr; // pointer of down-growing stack | |
93 #endif | |
94 | |
95 public: | |
96 // creation | |
97 xmlStream(outputStream* out) { initialize(out); } | |
98 DEBUG_ONLY(virtual ~xmlStream();) | |
99 | |
100 bool is_open() { return _out != NULL; } | |
101 | |
102 // text output | |
103 bool inside_attrs() { return _markup_state != BODY; } | |
104 | |
105 // flushing | |
106 virtual void flush(); // flushes out, sets _last_flush = count() | |
107 virtual void write(const char* s, size_t len); | |
108 void write_text(const char* s, size_t len); // used by xmlTextStream | |
109 int unflushed_count() { return (int)(out()->count() - _last_flush); } | |
110 | |
111 // writing complete XML elements | |
112 void elem(const char* format, ...); | |
113 void begin_elem(const char* format, ...); | |
114 void end_elem(const char* format, ...); | |
115 void end_elem(); | |
116 void head(const char* format, ...); | |
117 void begin_head(const char* format, ...); | |
118 void end_head(const char* format, ...); | |
119 void end_head(); | |
120 void done(const char* format, ...); // xxx_done event, plus tail | |
121 void done_raw(const char * kind); | |
122 void tail(const char* kind); | |
123 | |
124 // va_list versions | |
125 void va_elem(const char* format, va_list ap); | |
126 void va_begin_elem(const char* format, va_list ap); | |
127 void va_head(const char* format, va_list ap); | |
128 void va_begin_head(const char* format, va_list ap); | |
129 void va_done(const char* format, va_list ap); | |
130 | |
131 // write text (with quoting of special XML characters <>&'" etc.) | |
132 outputStream* text() { return _text; } | |
133 void text(const char* format, ...); | |
134 void va_text(const char* format, va_list ap) { | |
135 text()->vprint(format, ap); | |
136 } | |
137 | |
138 // commonly used XML attributes | |
139 void stamp(); // stamp='1.234' | |
140 void method(methodHandle m); // method='k n s' ... | |
141 void klass(KlassHandle k); // klass='name' | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
142 void name(const Symbol* s); // name='name' |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
143 void object(const char* attr, Metadata* val); |
0 | 144 void object(const char* attr, Handle val); |
145 | |
146 // print the text alone (sans ''): | |
147 void method_text(methodHandle m); | |
148 void klass_text(KlassHandle k); // klass='name' | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
149 void name_text(const Symbol* s); // name='name' |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2426
diff
changeset
|
150 void object_text(Metadata* x); |
0 | 151 void object_text(Handle x); |
152 | |
153 /* Example uses: | |
154 | |
155 // Empty element, simple case. | |
156 elem("X Y='Z'"); <X Y='Z'/> \n | |
157 | |
158 // Empty element, general case. | |
159 begin_elem("X Y='Z'"); <X Y='Z' | |
160 ...attrs... ...attrs... | |
161 end_elem(); /> | |
162 | |
163 // Compound element, simple case. | |
164 head("X Y='Z'"); <X Y='Z'> \n | |
165 ...body... ...body... | |
166 tail("X"); </X> \n | |
167 | |
168 // Compound element, general case. | |
169 begin_head("X Y='Z'"); <X Y='Z' | |
170 ...attrs... ...attrs... | |
171 end_head(); > \n | |
172 ...body... ...body... | |
173 tail("X"); </X> \n | |
174 | |
175 // Printf-style formatting: | |
176 elem("X Y='%s'", "Z"); <X Y='Z'/> \n | |
177 | |
178 */ | |
179 | |
180 }; | |
181 | |
182 // Standard log file, null if no logging is happening. | |
183 extern xmlStream* xtty; | |
184 | |
185 // Note: If ::xtty != NULL, ::tty == ::xtty->text(). | |
1972 | 186 |
187 #endif // SHARE_VM_UTILITIES_XMLSTREAM_HPP |