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/orderAccess.hpp"
30 #include "runtime/os.inline.hpp"
31 #include "runtime/thread.inline.hpp"
32 #include "services/management.hpp"
33
34 jlong LogDecorations::_vm_start_time_millis = 0;
35 const char* volatile LogDecorations::_host_name = NULL;
36
37 LogDecorations::LogDecorations(LogLevelType level, const LogTagSet &tagset, const LogDecorators &decorators)
38 : _level(level), _tagset(tagset), _millis(-1) {
39 create_decorations(decorators);
40 }
41
42 void LogDecorations::initialize(jlong vm_start_time) {
43 _vm_start_time_millis = vm_start_time;
44 }
45
46 const char* LogDecorations::host_name() {
47 const char* host_name = Atomic::load_acquire(&_host_name);
48 if (host_name == NULL) {
49 char buffer[1024];
50 if (os::get_host_name(buffer, sizeof(buffer))) {
51 host_name = os::strdup_check_oom(buffer);
52 const char* old_value = Atomic::cmpxchg(&_host_name, (const char*)NULL, host_name);
53 if (old_value != NULL) {
54 os::free((void *) host_name);
55 host_name = old_value;
56 }
57 }
58 }
59 return host_name;
60 }
61
62 void LogDecorations::create_decorations(const LogDecorators &decorators) {
63 char* position = _decorations_buffer;
64 #define DECORATOR(full_name, abbr) \
65 if (decorators.is_decorator(LogDecorators::full_name##_decorator)) { \
66 _decoration_offset[LogDecorators::full_name##_decorator] = position; \
67 position = create_##full_name##_decoration(position) + 1; \
68 } else { \
69 _decoration_offset[LogDecorators::full_name##_decorator] = NULL; \
70 }
71 DECORATOR_LIST
72 #undef DECORATOR
73 }
74
75 jlong LogDecorations::java_millis() {
76 if (_millis < 0) {
77 _millis = os::javaTimeMillis();
78 }
79 return _millis;
80 }
81
82 #define ASSERT_AND_RETURN(written, pos) \
83 assert(written >= 0, "Decorations buffer overflow"); \
84 return pos + written;
85
86 char* LogDecorations::create_time_decoration(char* pos) {
87 char* buf = os::iso8601_time(pos, 29);
88 int written = buf == NULL ? -1 : 29;
89 ASSERT_AND_RETURN(written, pos)
90 }
91
92 char* LogDecorations::create_utctime_decoration(char* pos) {
93 char* buf = os::iso8601_time(pos, 29, true);
94 int written = buf == NULL ? -1 : 29;
95 ASSERT_AND_RETURN(written, pos)
96 }
97
98 char * LogDecorations::create_uptime_decoration(char* pos) {
99 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%.3fs", os::elapsedTime());
100 ASSERT_AND_RETURN(written, pos)
101 }
102
103 char * LogDecorations::create_timemillis_decoration(char* pos) {
104 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ms", java_millis());
105 ASSERT_AND_RETURN(written, pos)
106 }
107
108 char * LogDecorations::create_uptimemillis_decoration(char* pos) {
109 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer),
110 INT64_FORMAT "ms", java_millis() - _vm_start_time_millis);
111 ASSERT_AND_RETURN(written, pos)
112 }
113
114 char * LogDecorations::create_timenanos_decoration(char* pos) {
115 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ns", os::javaTimeNanos());
116 ASSERT_AND_RETURN(written, pos)
117 }
118
119 char * LogDecorations::create_uptimenanos_decoration(char* pos) {
120 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ns", os::elapsed_counter());
121 ASSERT_AND_RETURN(written, pos)
122 }
123
124 char * LogDecorations::create_pid_decoration(char* pos) {
125 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%d", os::current_process_id());
126 ASSERT_AND_RETURN(written, pos)
127 }
128
129 char * LogDecorations::create_tid_decoration(char* pos) {
130 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer),
131 INTX_FORMAT, os::current_thread_id());
132 ASSERT_AND_RETURN(written, pos)
133 }
134
135 char* LogDecorations::create_level_decoration(char* pos) {
136 // Avoid generating the level decoration because it may change.
137 // The decoration() method has a special case for level decorations.
138 return pos;
139 }
140
141 char* LogDecorations::create_tags_decoration(char* pos) {
142 int written = _tagset.label(pos, DecorationsBufferSize - (pos - _decorations_buffer));
143 ASSERT_AND_RETURN(written, pos)
144 }
145
146 char* LogDecorations::create_hostname_decoration(char* pos) {
147 int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%s", host_name());
148 ASSERT_AND_RETURN(written, pos)
149 }