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 }