1 /* 2 * Copyright (c) 2015, 2017, 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/logFileStreamOutput.hpp" 26 #include "logging/logOutput.hpp" 27 #include "logging/logTagSet.hpp" 28 #include "memory/allocation.inline.hpp" 29 #include "prims/jvm.h" 30 #include "runtime/mutexLocker.hpp" 31 #include "runtime/os.inline.hpp" 32 33 LogOutput::~LogOutput() { 34 os::free(_config_string); 35 } 36 37 void LogOutput::clear_config_string() { 38 os::free(_config_string); 39 _config_string_buffer_size = InitialConfigBufferSize; 40 _config_string = NEW_C_HEAP_ARRAY(char, _config_string_buffer_size, mtLogging); 41 _config_string[0] = '\0'; 42 } 43 44 void LogOutput::set_config_string(const char* string) { 45 os::free(_config_string); 46 _config_string = os::strdup(string, mtLogging); 47 _config_string_buffer_size = strlen(_config_string) + 1; 48 } 49 50 void LogOutput::add_to_config_string(const LogTagSet* ts, LogLevelType level) { 51 if (_config_string_buffer_size < InitialConfigBufferSize) { 52 _config_string_buffer_size = InitialConfigBufferSize; 53 _config_string = REALLOC_C_HEAP_ARRAY(char, _config_string, _config_string_buffer_size, mtLogging); 54 } 55 56 size_t offset = strlen(_config_string); 57 if (offset > 0) { 58 // Add commas in-between tag and level combinations in the config string 59 _config_string[offset++] = ','; 60 } 61 62 for (;;) { 63 int ret = ts->label(_config_string + offset, _config_string_buffer_size - offset, "+"); 64 if (ret == -1) { 65 // Double the buffer size and retry 66 _config_string_buffer_size *= 2; 67 _config_string = REALLOC_C_HEAP_ARRAY(char, _config_string, _config_string_buffer_size, mtLogging); 68 continue; 69 } 70 break; 71 }; 72 73 offset = strlen(_config_string); 74 for (;;) { 75 int ret = jio_snprintf(_config_string + offset, _config_string_buffer_size - offset, "=%s", LogLevel::name(level)); 76 if (ret == -1) { 77 _config_string_buffer_size *= 2; 78 _config_string = REALLOC_C_HEAP_ARRAY(char, _config_string, _config_string_buffer_size, mtLogging); 79 continue; 80 } 81 break; 82 } 83 } 84 85 void LogOutput::describe(outputStream *out) { 86 out->print("%s ", name()); 87 out->print_raw(config_string()); 88 out->print(" "); 89 char delimiter[2] = {0}; 90 for (size_t d = 0; d < LogDecorators::Count; d++) { 91 LogDecorators::Decorator decorator = static_cast<LogDecorators::Decorator>(d); 92 if (decorators().is_decorator(decorator)) { 93 out->print("%s%s", delimiter, LogDecorators::name(decorator)); 94 *delimiter = ','; 95 } 96 } 97 } 98