Mercurial > hg > truffle
annotate src/share/vm/utilities/defaultStream.hpp @ 3202:9352a9c26095
revert outer framesate scheduling change
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Fri, 08 Jul 2011 18:00:39 +0200 |
parents | f95d63e2154a |
children | a4fdab16b621 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_UTILITIES_DEFAULTSTREAM_HPP |
26 #define SHARE_VM_UTILITIES_DEFAULTSTREAM_HPP | |
27 | |
28 #include "utilities/xmlstream.hpp" | |
29 | |
0 | 30 class defaultStream : public xmlTextStream { |
31 friend void ostream_abort(); | |
32 public: | |
33 enum { NO_WRITER = -1 }; | |
34 private: | |
35 bool _inited; | |
36 fileStream* _log_file; // XML-formatted file shared by all threads | |
37 static int _output_fd; | |
38 static int _error_fd; | |
39 static FILE* _output_stream; | |
40 static FILE* _error_stream; | |
41 | |
42 void init(); | |
43 void init_log(); | |
44 void finish_log(); | |
45 void finish_log_on_error(char *buf, int buflen); | |
46 public: | |
47 // must defer time stamp due to the fact that os::init() hasn't | |
48 // yet been called and os::elapsed_counter() may not be valid | |
49 defaultStream() { | |
50 _log_file = NULL; | |
51 _inited = false; | |
52 _writer = -1; | |
53 _last_writer = -1; | |
54 } | |
55 | |
56 ~defaultStream() { | |
57 if (has_log_file()) finish_log(); | |
58 } | |
59 | |
60 static inline FILE* output_stream() { | |
61 return DisplayVMOutputToStderr ? _error_stream : _output_stream; | |
62 } | |
63 static inline FILE* error_stream() { | |
64 return DisplayVMOutputToStdout ? _output_stream : _error_stream; | |
65 } | |
66 static inline int output_fd() { | |
67 return DisplayVMOutputToStderr ? _error_fd : _output_fd; | |
68 } | |
69 static inline int error_fd() { | |
70 return DisplayVMOutputToStdout ? _output_fd : _error_fd; | |
71 } | |
72 | |
73 virtual void write(const char* s, size_t len); | |
74 | |
75 void flush() { | |
76 // once we can determine whether we are in a signal handler, we | |
77 // should add the following assert here: | |
78 // assert(xxxxxx, "can not flush buffer inside signal handler"); | |
79 xmlTextStream::flush(); | |
80 fflush(output_stream()); | |
81 if (has_log_file()) _log_file->flush(); | |
82 } | |
83 | |
84 // advisory lock/unlock of _writer field: | |
85 private: | |
86 intx _writer; // thread_id with current rights to output | |
87 intx _last_writer; | |
88 public: | |
89 intx hold(intx writer_id); | |
90 void release(intx holder); | |
91 intx writer() { return _writer; } | |
92 bool has_log_file(); | |
93 | |
94 static defaultStream* instance; // sole instance | |
95 }; | |
1972 | 96 |
97 #endif // SHARE_VM_UTILITIES_DEFAULTSTREAM_HPP |