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 "jvm.h"
26 #include "logging/logDecorators.hpp"
27 #include "logging/logDecorations.hpp"
28 #include "logging/logFileStreamOutput.hpp"
29 #include "logging/logMessageBuffer.hpp"
30 #include "memory/allocation.inline.hpp"
31
32 static bool initialized;
33 static union {
34 char stdoutmem[sizeof(LogStdoutOutput)];
35 jlong dummy;
36 } aligned_stdoutmem;
37 static union {
38 char stderrmem[sizeof(LogStderrOutput)];
39 jlong dummy;
40 } aligned_stderrmem;
41
42 LogStdoutOutput &StdoutLog = reinterpret_cast<LogStdoutOutput&>(aligned_stdoutmem.stdoutmem);
43 LogStderrOutput &StderrLog = reinterpret_cast<LogStderrOutput&>(aligned_stderrmem.stderrmem);
44
LogFileStreamInitializer()45 LogFileStreamInitializer::LogFileStreamInitializer() {
46 if (!initialized) {
47 ::new (&StdoutLog) LogStdoutOutput();
48 ::new (&StderrLog) LogStderrOutput();
49 initialized = true;
50 }
51 }
52
write_decorations(const LogDecorations & decorations)53 int LogFileStreamOutput::write_decorations(const LogDecorations& decorations) {
54 int total_written = 0;
55
56 for (uint i = 0; i < LogDecorators::Count; i++) {
57 LogDecorators::Decorator decorator = static_cast<LogDecorators::Decorator>(i);
58 if (!_decorators.is_decorator(decorator)) {
59 continue;
60 }
61
62 int written = jio_fprintf(_stream, "[%-*s]",
63 _decorator_padding[decorator],
64 decorations.decoration(decorator));
65 if (written <= 0) {
66 return -1;
67 } else if (static_cast<size_t>(written - 2) > _decorator_padding[decorator]) {
68 _decorator_padding[decorator] = written - 2;
69 }
70 total_written += written;
71 }
72 return total_written;
73 }
74
write(const LogDecorations & decorations,const char * msg)75 int LogFileStreamOutput::write(const LogDecorations& decorations, const char* msg) {
76 const bool use_decorations = !_decorators.is_empty();
77
78 int written = 0;
79 os::flockfile(_stream);
80 if (use_decorations) {
81 written += write_decorations(decorations);
82 written += jio_fprintf(_stream, " ");
83 }
84 written += jio_fprintf(_stream, "%s\n", msg);
85 fflush(_stream);
86 os::funlockfile(_stream);
87
88 return written;
89 }
90
write(LogMessageBuffer::Iterator msg_iterator)91 int LogFileStreamOutput::write(LogMessageBuffer::Iterator msg_iterator) {
92 const bool use_decorations = !_decorators.is_empty();
93
94 int written = 0;
95 os::flockfile(_stream);
96 for (; !msg_iterator.is_at_end(); msg_iterator++) {
97 if (use_decorations) {
98 written += write_decorations(msg_iterator.decorations());
99 written += jio_fprintf(_stream, " ");
100 }
101 written += jio_fprintf(_stream, "%s\n", msg_iterator.message());
102 }
103 fflush(_stream);
104 os::funlockfile(_stream);
105
106 return written;
107 }
108