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Comparing deliantra/server/common/logger.C (file contents):
Revision 1.2 by root, Sun Aug 27 16:15:11 2006 UTC vs.
Revision 1.23 by root, Fri Mar 26 01:04:44 2010 UTC

1/* 1/*
2 * static char *rcsid_loger_c = 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * "$Id: logger.C,v 1.2 2006/08/27 16:15:11 root Exp $ "; 3 *
4 * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 *
6 * Deliantra is free software: you can redistribute it and/or modify it under
7 * the terms of the Affero GNU General Public License as published by the
8 * Free Software Foundation, either version 3 of the License, or (at your
9 * option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the Affero GNU General Public License
17 * and the GNU General Public License along with this program. If not, see
18 * <http://www.gnu.org/licenses/>.
19 *
20 * The authors can be reached via e-mail to <support@deliantra.net>
4 */ 21 */
5 22
6/*
7 CrossFire, A Multiplayer game for X-windows
8
9 Copyright (C) 2002 Mark Wedel & Crossfire Development Team
10 Copyright (C) 1992 Frank Tore Johansen
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26 The authors can be reached via e-mail at crossfire-devel@real-time.com
27*/
28
29
30#include <stdarg.h> 23#include <cstdarg>
24#include <cstring>
25
26#include <vector>
27
28#include <sys/uio.h>
29#include <pthread.h>
30
31#include <global.h> 31#include "global.h"
32#include <funcpoint.h> 32#include "dynbuf.h"
33#include "util.h"
33 34
34/* 35struct logline
35 * Logs a message to stderr, or to file, and/or even to socket.
36 * Or discards the message if it is of no importanse, and none have
37 * asked to hear messages of that logLevel.
38 *
39 * See include/logger.h for possible logLevels. Messages with llevInfo
40 * and llevError are always printed, regardless of debug mode.
41 */
42
43void LOG (LogLevel logLevel, const char *format, ...)
44{ 36{
45 char buf[20480]; /* This needs to be really really big - larger 37 struct timeval tv;
46 * than any other buffer, since that buffer may 38 char *buf; // includes PREFIX_LEN garbage bytes
47 * need to be put in this one. 39 int len;
48 */ 40 int flags;
49 char tbuf[20480]; 41};
50 42
51 time_t curtime = time (NULL); 43static SMUTEX(mutex);
52 struct tm *ptime = localtime (&curtime); 44static SCOND(cond);
45static int logfd = STDERR_FILENO;
46static int logsync = 1;
47static std::vector<logline, slice_allocator<logline> > queue;
53 48
54 strftime (tbuf, 256, "%Y-%m-%d %H:%M:%S ", ptime); 49void set_logfd (int fd)
50{
51 SMUTEX_LOCK (mutex);
52 logfd = fd < 0 ? STDERR_FILENO : fd;
53 SMUTEX_UNLOCK (mutex);
54}
55
56#define PREFIX_LEN sizeof ("0000-00-00 00:00:00.0000+") - 1
57
58static void
59log_sync (logline &line)
60{
61 struct tm lt;
62 char pfx [PREFIX_LEN];
63
64 localtime_r (&line.tv.tv_sec, &lt);
65
66 sprintf (pfx, "%04d-%02d-%02d %02d:%02d:%02d.%04d",
67 lt.tm_year + 1900,
68 lt.tm_mon + 1,
69 lt.tm_mday,
70 lt.tm_hour,
71 lt.tm_min,
72 lt.tm_sec,
73 (int)(line.tv.tv_usec / 100)
74 );
75
76 pfx [PREFIX_LEN - 1] = line.flags & logSync ? '=' : ' ';
77
78 struct iovec iov [2];
79
80 iov [0].iov_base = pfx;
81 iov [0].iov_len = PREFIX_LEN;
82
83 char *buf = line.buf;
84
85 while (char *end = strchr (buf, '\n'))
86 {
87 iov [1].iov_base = buf;
88 iov [1].iov_len = end - buf + 1;
89
90 writev (STDERR_FILENO, iov, 2);
91 if (logfd != STDERR_FILENO)
92 writev (logfd, iov, 2);
93
94 buf = end + 1;
95
96 if (buf == line.buf + line.len)
97 break;
98
99 pfx [PREFIX_LEN - 1] = '+';
100 }
101
102 sfree (line.buf, line.len);
103}
104
105static void *
106logthread_proc (void *arg)
107{
108 int idx = 0;
109
110 for (;;)
111 {
112 logline line;
113
114 SMUTEX_LOCK (mutex);
115
116 while (queue.empty ())
117 SCOND_WAIT (cond, mutex);
118
119 line = queue [idx++];
120
121 // this algorithm could result in an ever-increasing vector
122 // size if we log faster than we can write, but if that happens
123 // we have bigger problems.
124 if (idx == queue.size ())
125 {
126 queue.clear ();
127 idx = 0;
128 }
129
130 SMUTEX_UNLOCK (mutex);
131
132 log_sync (line);
133 }
134}
135
136void
137log_cleanup ()
138{
139 logsync = 1;
140
141 for (;;)
142 {
143 int done;
144
145 SMUTEX_LOCK (mutex);
146 done = queue.empty ();
147 SMUTEX_UNLOCK (mutex);
148
149 if (done)
150 break;
151
152 usleep (10000);
153 }
154}
155
156static void
157af_child ()
158{
159 logsync = 1;
160}
161
162static struct logthread : thread
163{
164 logthread ()
165 {
166 pthread_atfork (0, 0, af_child);
167 start (logthread_proc);
168 logsync = 0;
169 }
170} logthread;
171
172void
173LOG (int flags, const_utf8_string format, ...)
174{
175 int level = flags & 15;
176
177 if (level > settings.debug)
178 return;
179
180 logline line;
181 gettimeofday (&line.tv, 0);
182
183 static dynbuf_text buf;
55 184
56 va_list ap; 185 va_list ap;
57 va_start(ap, format); 186 va_start (ap, format);
58 187 buf.vprintf (format, ap);
59 buf[0] = '\0';
60 if (logLevel <= settings.debug)
61 {
62 vsnprintf(buf, sizeof (buf), format, ap);
63 strncat(tbuf, buf, 20460);
64#ifdef WIN32 /* ---win32 change log handling for win32 */
65 fputs(tbuf, logfile); /* wrote to file or stdout */
66#ifdef DEBUG /* if we have a debug version, we want see ALL output */
67 fflush(logfile); /* so flush this! */
68#endif
69 if(logfile != stderr) /* if was it a logfile wrote it to screen too */
70 fputs(tbuf, stderr);
71#else
72 fputs(tbuf, logfile);
73#endif
74 }
75 if (!exiting && !trying_emergency_save &&
76 logLevel == llevError && ++nroferrors > MAX_ERRORS) {
77 exiting = 1;
78 if (!trying_emergency_save)
79 emergency_save(0);
80 }
81 va_end(ap); 188 va_end (ap);
189
190 buf << '\n';
191
192 line.buf = buf.linearise ();
193 line.len = buf.size ();
194
195 if (line.buf [line.len - 2] == '\n')
196 --line.len;
197
198 line.buf = salloc<char> (line.len, line.buf);
199
200 buf.clear ();
201
202 if (logsync)
203 flags |= logSync;
204
205 if (flags & logBacktrace)
206 {
207 line.buf [line.len - 1] = 0;
208 log_backtrace (line.buf);
209 line.buf [line.len - 1] = '\n';
210 }
211
212 line.flags = flags;
213
214 if (line.flags & logSync)
215 log_sync (line);
216 else
217 {
218 SMUTEX_LOCK (mutex);
219 queue.push_back (line);
220 SMUTEX_UNLOCK (mutex);
221 SCOND_SIGNAL (cond);
222 }
82} 223}
224

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