1 /* 2 * Copyright (c) 2015, 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 "logging/logDecorations.hpp" 26 #include "logging/logLevel.hpp" 27 #include "logging/logOutput.hpp" 28 #include "logging/logTag.hpp" 29 #include "logging/logTagSet.hpp" 30 #include "memory/allocation.inline.hpp" 31 32 LogTagSet* LogTagSet::_list = NULL; 33 size_t LogTagSet::_ntagsets = 0; 34 35 // This constructor is called only during static initialization. 36 // See the declaration in logTagSet.hpp for more information. 37 LogTagSet::LogTagSet(PrefixWriter prefix_writer, LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4) 38 : _next(_list), _write_prefix(prefix_writer) { 39 _tag[0] = t0; 40 _tag[1] = t1; 41 _tag[2] = t2; 42 _tag[3] = t3; 43 _tag[4] = t4; 44 for (_ntags = 0; _ntags < LogTag::MaxTags && _tag[_ntags] != LogTag::__NO_TAG; _ntags++) { 45 } 46 _list = this; 47 _ntagsets++; 48 49 // Set the default output to warning and error level for all new tagsets. 50 _output_list.set_output_level(LogOutput::Stderr, LogLevel::Default); 51 } 52 53 void LogTagSet::update_decorators(const LogDecorators& decorator) { 54 LogDecorators new_decorators = decorator; 55 for (LogOutputList::Iterator it = _output_list.iterator(); it != _output_list.end(); it++) { 56 new_decorators.combine_with((*it)->decorators()); 57 } 58 _decorators = new_decorators; 59 } 60 61 bool LogTagSet::has_output(const LogOutput* output) { 62 for (LogOutputList::Iterator it = _output_list.iterator(); it != _output_list.end(); it++) { 63 if (*it == output) { 64 return true; 65 } 66 } 67 return false; 68 } 69 70 void LogTagSet::log(LogLevelType level, const char* msg) { 71 LogDecorations decorations(level, *this, _decorators); 72 for (LogOutputList::Iterator it = _output_list.iterator(level); it != _output_list.end(); it++) { 73 (*it)->write(decorations, msg); 74 } 75 } 76 77 int LogTagSet::label(char* buf, size_t len, const char* separator) const { 78 int tot_written = 0; 79 for (size_t i = 0; i < _ntags; i++) { 80 int written = jio_snprintf(buf + tot_written, len - tot_written, "%s%s", 81 (i == 0 ? "" : separator), 82 LogTag::name(_tag[i])); 83 if (written < 0) { 84 return -1; 85 } 86 tot_written += written; 87 } 88 return tot_written; 89 } 90 91 void LogTagSet::write(LogLevelType level, const char* fmt, ...) { 92 va_list args; 93 va_start(args, fmt); 94 vwrite(level, fmt, args); 95 va_end(args); 96 } 97 98 const size_t vwrite_buffer_size = 512; 99 100 void LogTagSet::vwrite(LogLevelType level, const char* fmt, va_list args) { 101 assert(level >= LogLevel::First && level <= LogLevel::Last, "Log level:%d is incorrect", level); 102 char buf[vwrite_buffer_size]; 103 va_list saved_args; // For re-format on buf overflow. 104 va_copy(saved_args, args); 105 size_t prefix_len = _write_prefix(buf, sizeof(buf)); 106 // Check that string fits in buffer; resize buffer if necessary 107 int ret = os::log_vsnprintf(buf + prefix_len, sizeof(buf) - prefix_len, fmt, args); 108 assert(ret >= 0, "Log message buffer issue"); 109 if ((size_t)ret >= sizeof(buf)) { 110 size_t newbuf_len = prefix_len + ret + 1; 111 char* newbuf = NEW_C_HEAP_ARRAY(char, newbuf_len, mtLogging); 112 memcpy(newbuf, buf, prefix_len); 113 ret = os::log_vsnprintf(newbuf + prefix_len, newbuf_len - prefix_len, fmt, saved_args); 114 assert(ret >= 0, "Log message buffer issue"); 115 log(level, newbuf); 116 FREE_C_HEAP_ARRAY(char, newbuf); 117 } else { 118 log(level, buf); 119 } 120 va_end(saved_args); 121 }