logDecorations.cpp revision 11209:c84a6ce067ad 
1/*
2 * Copyright (c) 2015, 2016, 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.
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23 */
24#include "precompiled.hpp"
25#include "logging/logConfiguration.hpp"
26#include "logging/logDecorations.hpp"
27#include "runtime/os.inline.hpp"
28#include "runtime/thread.inline.hpp"
29#include "services/management.hpp"
30
31jlong LogDecorations::_vm_start_time_millis = 0;
32const char* LogDecorations::_host_name = "";
33
34LogDecorations::LogDecorations(LogLevelType level, const LogTagSet &tagset, const LogDecorators &decorators)
35    : _level(level), _tagset(tagset), _millis(-1) {
36  create_decorations(decorators);
37}
38
39void LogDecorations::initialize(jlong vm_start_time) {
40  char buffer[1024];
41  if (os::get_host_name(buffer, sizeof(buffer))){
42    _host_name = os::strdup_check_oom(buffer);
43  }
44  _vm_start_time_millis = vm_start_time;
45}
46
47void LogDecorations::create_decorations(const LogDecorators &decorators) {
48  char* position = _decorations_buffer;
49  #define DECORATOR(full_name, abbr) \
50  if (decorators.is_decorator(LogDecorators::full_name##_decorator)) { \
51    _decoration_offset[LogDecorators::full_name##_decorator] = position; \
52    position = create_##full_name##_decoration(position) + 1; \
53  }
54  DECORATOR_LIST
55#undef DECORATOR
56}
57
58jlong LogDecorations::java_millis() {
59  if (_millis < 0) {
60    _millis = os::javaTimeMillis();
61  }
62  return _millis;
63}
64
65#define ASSERT_AND_RETURN(written, pos) \
66    assert(written >= 0, "Decorations buffer overflow"); \
67    return pos + written;
68
69char* LogDecorations::create_time_decoration(char* pos) {
70  char* buf = os::iso8601_time(pos, 29);
71  int written = buf == NULL ? -1 : 29;
72  ASSERT_AND_RETURN(written, pos)
73}
74
75char * LogDecorations::create_uptime_decoration(char* pos) {
76  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%.3fs", os::elapsedTime());
77  ASSERT_AND_RETURN(written, pos)
78}
79
80char * LogDecorations::create_timemillis_decoration(char* pos) {
81  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ms", java_millis());
82  ASSERT_AND_RETURN(written, pos)
83}
84
85char * LogDecorations::create_uptimemillis_decoration(char* pos) {
86  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer),
87                             INT64_FORMAT "ms", java_millis() - _vm_start_time_millis);
88  ASSERT_AND_RETURN(written, pos)
89}
90
91char * LogDecorations::create_timenanos_decoration(char* pos) {
92  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ns", os::javaTimeNanos());
93  ASSERT_AND_RETURN(written, pos)
94}
95
96char * LogDecorations::create_uptimenanos_decoration(char* pos) {
97  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), INT64_FORMAT "ns", os::elapsed_counter());
98  ASSERT_AND_RETURN(written, pos)
99}
100
101char * LogDecorations::create_pid_decoration(char* pos) {
102  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%d", os::current_process_id());
103  ASSERT_AND_RETURN(written, pos)
104}
105
106char * LogDecorations::create_tid_decoration(char* pos) {
107  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer),
108                             INTX_FORMAT, os::current_thread_id());
109  ASSERT_AND_RETURN(written, pos)
110}
111
112char* LogDecorations::create_level_decoration(char* pos) {
113  // Avoid generating the level decoration because it may change.
114  // The decoration() method has a special case for level decorations.
115  return pos;
116}
117
118char* LogDecorations::create_tags_decoration(char* pos) {
119  int written = _tagset.label(pos, DecorationsBufferSize - (pos - _decorations_buffer));
120  ASSERT_AND_RETURN(written, pos)
121}
122
123char* LogDecorations::create_hostname_decoration(char* pos) {
124  int written = jio_snprintf(pos, DecorationsBufferSize - (pos - _decorations_buffer), "%s", _host_name);
125  ASSERT_AND_RETURN(written, pos)
126}
127
128