23 */
24 #ifndef SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
25 #define SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
26
27 #include "logging/logFileStreamOutput.hpp"
28 #include "runtime/semaphore.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 DefaultFileCount = 5;
43 static const size_t DefaultFileSize = 20 * M;
44 static const size_t StartTimeBufferSize = 20;
45 static const size_t PidBufferSize = 21;
46 static const uint MaxRotationFileCount = 1000;
47 static char _pid_str[PidBufferSize];
48 static char _vm_start_time_str[StartTimeBufferSize];
49
50 const char* _name;
51 char* _file_name;
52 char* _archive_name;
53
54 uint _current_file;
55 uint _file_count;
56 uint _file_count_max_digits;
57
58 size_t _archive_name_len;
59 size_t _rotate_size;
60 size_t _current_size;
61
62 // Semaphore used for synchronizing file rotations and writes
63 Semaphore _rotation_semaphore;
64
65 void archive();
66 void rotate();
67 bool parse_options(const char* options, outputStream* errstream);
68 char *make_file_name(const char* file_name, const char* pid_string, const char* timestamp_string);
69
70 bool should_rotate() {
71 return _file_count > 0 && _rotate_size > 0 && _current_size >= _rotate_size;
72 }
73
74 void increment_file_count() {
75 _current_file++;
76 if (_current_file == _file_count) {
77 _current_file = 0;
78 }
79 }
80
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23 */
24 #ifndef SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
25 #define SHARE_VM_LOGGING_LOGFILEOUTPUT_HPP
26
27 #include "logging/logFileStreamOutput.hpp"
28 #include "runtime/semaphore.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 DefaultFileCount = 5;
43 static const julong DefaultFileSize = 20 * M;
44 static const size_t StartTimeBufferSize = 20;
45 static const size_t PidBufferSize = 21;
46 static const uint MaxRotationFileCount = 1000;
47 static char _pid_str[PidBufferSize];
48 static char _vm_start_time_str[StartTimeBufferSize];
49
50 const char* _name;
51 char* _file_name;
52 char* _archive_name;
53
54 uint _current_file;
55 uint _file_count;
56 uint _file_count_max_digits;
57
58 size_t _archive_name_len;
59 julong _rotate_size;
60 julong _current_size;
61
62 // Semaphore used for synchronizing file rotations and writes
63 Semaphore _rotation_semaphore;
64
65 void archive();
66 void rotate();
67 bool parse_options(const char* options, outputStream* errstream);
68 char *make_file_name(const char* file_name, const char* pid_string, const char* timestamp_string);
69
70 bool should_rotate() {
71 return _file_count > 0 && _rotate_size > 0 && _current_size >= _rotate_size;
72 }
73
74 void increment_file_count() {
75 _current_file++;
76 if (_current_file == _file_count) {
77 _current_file = 0;
78 }
79 }
80
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