33097
|
1 |
/*
|
|
2 |
* Copyright (c) 2015, 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 |
#ifndef SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
|
|
25 |
#define SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
|
|
26 |
|
|
27 |
#include "logging/logFileStreamOutput.hpp"
|
|
28 |
#include "runtime/mutex.hpp"
|
|
29 |
#include "utilities/globalDefinitions.hpp"
|
|
30 |
|
|
31 |
class LogDecorations;
|
|
32 |
|
|
33 |
// The log file output, with support for file rotation based on a target size.
|
|
34 |
class LogFileOutput : public LogFileStreamOutput {
|
|
35 |
private:
|
|
36 |
static const char* FileOpenMode;
|
|
37 |
static const char* FileCountOptionKey;
|
|
38 |
static const char* FileSizeOptionKey;
|
|
39 |
static const char* PidFilenamePlaceholder;
|
|
40 |
static const char* TimestampFilenamePlaceholder;
|
|
41 |
static const char* TimestampFormat;
|
|
42 |
static const size_t StartTimeBufferSize = 20;
|
|
43 |
static const size_t PidBufferSize = 21;
|
|
44 |
static char _pid_str[PidBufferSize];
|
|
45 |
static char _vm_start_time_str[StartTimeBufferSize];
|
|
46 |
|
|
47 |
Mutex _rotation_lock;
|
|
48 |
const char* _name;
|
|
49 |
char* _file_name;
|
|
50 |
char* _archive_name;
|
|
51 |
|
|
52 |
uint _current_file;
|
|
53 |
uint _file_count;
|
|
54 |
uint _file_count_max_digits;
|
|
55 |
|
|
56 |
size_t _archive_name_len;
|
|
57 |
size_t _rotate_size;
|
|
58 |
size_t _current_size;
|
|
59 |
|
|
60 |
void archive();
|
|
61 |
void rotate();
|
|
62 |
bool configure_rotation(const char* options);
|
|
63 |
char *make_file_name(const char* file_name, const char* pid_string, const char* timestamp_string);
|
|
64 |
static size_t parse_value(const char* value_str);
|
|
65 |
|
|
66 |
bool should_rotate() const {
|
|
67 |
return _file_count > 0 && _rotate_size > 0 && _current_size >= _rotate_size;
|
|
68 |
}
|
|
69 |
|
|
70 |
public:
|
|
71 |
LogFileOutput(const char *name);
|
|
72 |
virtual ~LogFileOutput();
|
|
73 |
virtual bool initialize(const char* options);
|
|
74 |
virtual int write(const LogDecorations& decorations, const char* msg);
|
|
75 |
|
|
76 |
virtual const char* name() const {
|
|
77 |
return _name;
|
|
78 |
}
|
|
79 |
|
|
80 |
static void set_file_name_parameters(jlong start_time);
|
|
81 |
};
|
|
82 |
|
|
83 |
#endif // SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
|