1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <pthread.h>
#include <signal.h>
#include <sys/resource.h>
#include <unistd.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#if defined(HAVE_LOCALE_H)
# include <locale.h>
#endif
#include "drizzled/plugin.h"
#include "drizzled/gettext.h"
#include "drizzled/configmake.h"
#include "drizzled/session.h"
#include "drizzled/internal/my_sys.h"
#include "drizzled/unireg.h"
#include "drizzled/drizzled.h"
#include "drizzled/errmsg_print.h"
#include "drizzled/data_home.h"
#include "drizzled/plugin/listen.h"
#include "drizzled/plugin/client.h"
#include "drizzled/pthread_globals.h"
#include "drizzled/tztime.h"
#include "drizzled/signal_handler.h"
#include "drizzled/replication_services.h"
using namespace drizzled;
using namespace std;
static pthread_t select_thread;
static uint32_t thr_kill_signal;
/**
All global error messages are sent here where the first one is stored
for the client.
*/
static void my_message_sql(uint32_t error, const char *str, myf MyFlags)
{
Session *session;
/*
Put here following assertion when situation with EE_* error codes
will be fixed
*/
if ((session= current_session))
{
if (MyFlags & ME_FATALERROR)
session->is_fatal_error= 1;
/*
TODO: There are two exceptions mechanism (Session and sp_rcontext),
this could be improved by having a common stack of handlers.
*/
if (session->handle_error(error, str,
DRIZZLE_ERROR::WARN_LEVEL_ERROR))
return;;
/*
session->lex->current_select == 0 if lex structure is not inited
(not query command (COM_QUERY))
*/
if (! (session->lex->current_select &&
session->lex->current_select->no_error && !session->is_fatal_error))
{
if (! session->main_da.is_error()) // Return only first message
{
if (error == 0)
error= ER_UNKNOWN_ERROR;
if (str == NULL)
str= ER(error);
session->main_da.set_error_status(error, str);
}
}
if (!session->no_warnings_for_error && !session->is_fatal_error)
{
/*
Suppress infinite recursion if there a memory allocation error
inside push_warning.
*/
session->no_warnings_for_error= true;
push_warning(session, DRIZZLE_ERROR::WARN_LEVEL_ERROR, error, str);
session->no_warnings_for_error= false;
}
}
if (!session || MyFlags & ME_NOREFRESH)
errmsg_printf(ERRMSG_LVL_ERROR, "%s: %s",internal::my_progname,str);
}
static void init_signals(void)
{
sigset_t set;
struct sigaction sa;
if (!(test_flags.test(TEST_NO_STACKTRACE) ||
test_flags.test(TEST_CORE_ON_SIGNAL)))
{
sa.sa_flags = SA_RESETHAND | SA_NODEFER;
sigemptyset(&sa.sa_mask);
sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);
sa.sa_handler= drizzled_handle_segfault;
sigaction(SIGSEGV, &sa, NULL);
sigaction(SIGABRT, &sa, NULL);
#ifdef SIGBUS
sigaction(SIGBUS, &sa, NULL);
#endif
sigaction(SIGILL, &sa, NULL);
sigaction(SIGFPE, &sa, NULL);
}
if (test_flags.test(TEST_CORE_ON_SIGNAL))
{
/* Change limits so that we will get a core file */
struct rlimit rl;
rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
if (setrlimit(RLIMIT_CORE, &rl) && global_system_variables.log_warnings)
errmsg_printf(ERRMSG_LVL_WARN,
_("setrlimit could not change the size of core files "
"to 'infinity'; We may not be able to generate a "
"core file on signals"));
}
(void) sigemptyset(&set);
ignore_signal(SIGPIPE);
sigaddset(&set,SIGPIPE);
#ifndef IGNORE_SIGHUP_SIGQUIT
sigaddset(&set,SIGQUIT);
sigaddset(&set,SIGHUP);
#endif
sigaddset(&set,SIGTERM);
/* Fix signals if blocked by parents (can happen on Mac OS X) */
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = drizzled_print_signal_warning;
sigaction(SIGTERM, &sa, NULL);
sa.sa_flags = 0;
sa.sa_handler = drizzled_print_signal_warning;
sigaction(SIGHUP, &sa, NULL);
#ifdef SIGTSTP
sigaddset(&set,SIGTSTP);
#endif
if (test_flags.test(TEST_SIGINT))
{
sa.sa_flags= 0;
sa.sa_handler= drizzled_end_thread_signal;
sigaction(thr_kill_signal, &sa, NULL);
// May be SIGINT
sigdelset(&set, thr_kill_signal);
}
else
{
sigaddset(&set,SIGINT);
}
sigprocmask(SIG_SETMASK,&set,NULL);
pthread_sigmask(SIG_SETMASK,&set,NULL);
return;
}
static void GoogleProtoErrorThrower(google::protobuf::LogLevel level, const char* filename,
int line, const string& message) throw(const char *)
{
(void)filename;
(void)line;
(void)message;
switch(level)
{
case google::protobuf::LOGLEVEL_INFO:
break;
case google::protobuf::LOGLEVEL_WARNING:
case google::protobuf::LOGLEVEL_ERROR:
case google::protobuf::LOGLEVEL_FATAL:
default:
throw("error in google protocol buffer parsing");
}
}
int main(int argc, char **argv)
{
#if defined(ENABLE_NLS)
# if defined(HAVE_LOCALE_H)
setlocale(LC_ALL, "");
# endif
bindtextdomain("drizzle", LOCALEDIR);
textdomain("drizzle");
#endif
module::Registry &modules= module::Registry::singleton();
plugin::Client *client;
Session *session;
MY_INIT(argv[0]); // init my_sys library & pthreads
/* nothing should come before this line ^^^ */
/* Set signal used to kill Drizzle */
thr_kill_signal= SIGINT;
google::protobuf::SetLogHandler(&GoogleProtoErrorThrower);
if (init_common_variables(DRIZZLE_CONFIG_NAME,
argc, argv, load_default_groups))
unireg_abort(1); // Will do exit
init_signals();
select_thread=pthread_self();
select_thread_in_use=1;
if (chdir(data_home_real) && !opt_help)
{
errmsg_printf(ERRMSG_LVL_ERROR, _("Data directory %s does not exist\n"), data_home_real);
unireg_abort(1);
}
data_home= data_home_buff;
data_home[0]=FN_CURLIB; // all paths are relative from here
data_home[1]=0;
data_home_len= 2;
if ((user_info= check_user(drizzled_user)))
{
set_user(drizzled_user, user_info);
}
if (server_id == 0)
{
server_id= 1;
}
if (init_server_components(modules))
unireg_abort(1);
/**
* This check must be done after init_server_components for now
* because we don't yet have plugin dependency tracking...
*
* ReplicationServices::evaluateRegisteredPlugins() will print error messages to stderr
* via errmsg_printf().
*
* @todo
*
* not checking return since unireg_abort() hangs
*/
ReplicationServices &replication_services= ReplicationServices::singleton();
(void) replication_services.evaluateRegisteredPlugins();
if (plugin::Listen::setup())
unireg_abort(1);
/*
init signals & alarm
After this we can't quit by a simple unireg_abort
*/
error_handler_hook= my_message_sql;
assert(plugin::num_trx_monitored_objects > 0);
if (drizzle_rm_tmp_tables() ||
my_tz_init((Session *)0, default_tz_name))
{
abort_loop= true;
select_thread_in_use=0;
(void) pthread_kill(signal_thread, SIGTERM);
(void) unlink(pidfile_name); // Not needed anymore
exit(1);
}
errmsg_printf(ERRMSG_LVL_INFO, _(ER(ER_STARTUP)), internal::my_progname,
PANDORA_RELEASE_VERSION, COMPILATION_COMMENT);
/* Listen for new connections and start new session for each connection
accepted. The listen.getClient() method will return NULL when the server
should be shutdown. */
while ((client= plugin::Listen::getClient()) != NULL)
{
if (!(session= new Session(client)))
{
delete client;
continue;
}
/* If we error on creation we drop the connection and delete the session. */
if (session->schedule())
Session::unlink(session);
}
LOCK_thread_count.lock();
select_thread_in_use=0; // For close_connections
LOCK_thread_count.unlock();
COND_thread_count.notify_all();
/* Wait until cleanup is done */
LOCK_thread_count.lock();
while (!ready_to_exit)
pthread_cond_wait(COND_server_end.native_handle(), LOCK_thread_count.native_handle());
LOCK_thread_count.unlock();
clean_up(1);
module::Registry::shutdown();
internal::my_end();
return 0;
}
|