1 /*
2 * Copyright (c) 2015, 2019, 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 #include "precompiled.hpp"
25 #include "jvm.h"
26 #include "logging/logConfiguration.hpp"
27 #include "logging/logDecorations.hpp"
28 #include "runtime/atomic.hpp"
29 #include "runtime/os.inline.hpp"
30 #include "runtime/thread.inline.hpp"
31 #include "services/management.hpp"
32
33 jlong LogDecorations::_vm_start_time_millis = 0;
34 const char* volatile LogDecorations::_host_name = NULL;
35
36 LogDecorations::LogDecorations(LogLevelType level, const LogTagSet &tagset, const LogDecorators &decorators)
37 : _level(level), _tagset(tagset), _millis(-1) {
38 create_decorations(decorators);
39 }
40
41 void LogDecorations::initialize(jlong vm_start_time) {
42 _vm_start_time_millis = vm_start_time;
43 }
44
45 const char* LogDecorations::host_name() {
46 const char* host_name = Atomic::load_acquire(&_host_name);
47 if (host_name == NULL) {
48 char buffer[1024];
49 if (os::get_host_name(buffer, sizeof(buffer))) {
50 host_name = os::strdup_check_oom(buffer);
51 const char* old_value = Atomic::cmpxchg(&_host_name, (const char*)NULL, host_name);
52 if (old_value != NULL) {
53 os::free((void *) host_name);
54 host_name = old_value;
55 }
56 }
57 }
58 return host_name;
59 }
60
61 void LogDecorations::create_decorations(const LogDecorators &decorators) {
62 char* position = _decorations_buffer;
63 #define DECORATOR(full_name, abbr) \
64 if (decorators.is_decorator(LogDecorators::full_name##_decorator)) { \
65 _decoration_offset[LogDecorators::full_name##_decorator] = position; \
66 position = create_##full_name##_decoration(position) + 1; \
67 } else { \
68 _decoration_offset[LogDecorators::full_name##_decorator] = NULL; \
69 }
70 DECORATOR_LIST
71 #undef DECORATOR
72 }
73
74 jlong LogDecorations::java_millis() {
75 if (_millis < 0) {
76 _millis = os::javaTimeMillis();
77 }
78 return _millis;
79 }
80
81 #define ASSERT_AND_RETURN(written, pos) \
82 assert(written >= 0, "Decorations buffer overflow"); \
83 return pos + written;
84
85 char* LogDecorations::create_time_decoration(char* pos) {
86 char* buf = os::iso8601_time(pos, 29);
87 int written = buf == NULL ? -1 : 29;
88 ASSERT_AND_RETURN(written, pos)
89 }
90
91 char* LogDecorations::create_utctime_decoration(char* pos) {
92 char* buf = os::iso8601_time(pos, 29, true);
93 int written = buf == NULL ? -1 : 29;
94 ASSERT_AND_RETURN(written, pos)
95 }
96
97 char * LogDecorations::create_uptime_decoration(char* pos) {
98 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%.3fs", os::elapsedTime());
99 ASSERT_AND_RETURN(written, pos)
100 }
101
102 char * LogDecorations::create_timemillis_decoration(char* pos) {
103 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ms", java_millis());
104 ASSERT_AND_RETURN(written, pos)
105 }
106
107 char * LogDecorations::create_uptimemillis_decoration(char* pos) {
108 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer),
109 INT64_FORMAT "ms", java_millis() - _vm_start_time_millis);
110 ASSERT_AND_RETURN(written, pos)
111 }
112
113 char * LogDecorations::create_timenanos_decoration(char* pos) {
114 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ns", os::javaTimeNanos());
115 ASSERT_AND_RETURN(written, pos)
116 }
117
118 char * LogDecorations::create_uptimenanos_decoration(char* pos) {
119 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ns", os::elapsed_counter());
120 ASSERT_AND_RETURN(written, pos)
121 }
122
123 char * LogDecorations::create_pid_decoration(char* pos) {
124 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%d", os::current_process_id());
125 ASSERT_AND_RETURN(written, pos)
126 }
127
128 char * LogDecorations::create_tid_decoration(char* pos) {
129 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer),
130 INTX_FORMAT, os::current_thread_id());
131 ASSERT_AND_RETURN(written, pos)
132 }
133
134 char* LogDecorations::create_level_decoration(char* pos) {
135 // Avoid generating the level decoration because it may change.
136 // The decoration() method has a special case for level decorations.
137 return pos;
138 }
139
140 char* LogDecorations::create_tags_decoration(char* pos) {
141 int written = _tagset.label(pos, DecorationsBufferSize - (pos - _decorations_buffer));
142 ASSERT_AND_RETURN(written, pos)
143 }
144
145 char* LogDecorations::create_hostname_decoration(char* pos) {
146 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%s", host_name());
147 ASSERT_AND_RETURN(written, pos)
148 }