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
|
/* Copyright (C) 2003 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <ndb_global.h>
#include <NdbThread.h>
#include <my_pthread.h>
#include <NdbMem.h>
#define MAX_THREAD_NAME 16
/*#define USE_PTHREAD_EXTRAS*/
#ifdef NDB_SHM_TRANSPORTER
int g_ndb_shm_signum= 0;
#endif
struct NdbThread
{
pthread_t thread;
char thread_name[MAX_THREAD_NAME];
NDB_THREAD_FUNC * func;
void * object;
};
#ifdef NDB_SHM_TRANSPORTER
void NdbThread_set_shm_sigmask(my_bool block)
{
DBUG_ENTER("NdbThread_set_shm_sigmask");
if (g_ndb_shm_signum)
{
sigset_t mask;
DBUG_PRINT("info",("Block signum %d",g_ndb_shm_signum));
sigemptyset(&mask);
sigaddset(&mask, g_ndb_shm_signum);
if (block)
pthread_sigmask(SIG_BLOCK, &mask, 0);
else
pthread_sigmask(SIG_UNBLOCK, &mask, 0);
}
DBUG_VOID_RETURN;
}
#endif
static
void*
ndb_thread_wrapper(void* _ss){
my_thread_init();
{
DBUG_ENTER("ndb_thread_wrapper");
#ifdef NDB_SHM_TRANSPORTER
NdbThread_set_shm_sigmask(TRUE);
#endif
{
/**
* Block all signals to thread by default
* let them go to main process instead
*/
sigset_t mask;
sigfillset(&mask);
pthread_sigmask(SIG_BLOCK, &mask, 0);
}
{
void *ret;
struct NdbThread * ss = (struct NdbThread *)_ss;
ret= (* ss->func)(ss->object);
DBUG_POP();
NdbThread_Exit(ret);
}
/* will never be reached */
DBUG_RETURN(0);
}
}
struct NdbThread* NdbThread_Create(NDB_THREAD_FUNC *p_thread_func,
NDB_THREAD_ARG *p_thread_arg,
const NDB_THREAD_STACKSIZE _thread_stack_size,
const char* p_thread_name,
NDB_THREAD_PRIO thread_prio)
{
struct NdbThread* tmpThread;
int result;
pthread_attr_t thread_attr;
NDB_THREAD_STACKSIZE thread_stack_size= _thread_stack_size * SIZEOF_CHARP/4;
DBUG_ENTER("NdbThread_Create");
(void)thread_prio; /* remove warning for unused parameter */
if (p_thread_func == NULL)
DBUG_RETURN(NULL);
tmpThread = (struct NdbThread*)NdbMem_Allocate(sizeof(struct NdbThread));
if (tmpThread == NULL)
DBUG_RETURN(NULL);
DBUG_PRINT("info",("thread_name: %s", p_thread_name));
strnmov(tmpThread->thread_name,p_thread_name,sizeof(tmpThread->thread_name));
pthread_attr_init(&thread_attr);
#ifdef PTHREAD_STACK_MIN
if (thread_stack_size < PTHREAD_STACK_MIN)
thread_stack_size = PTHREAD_STACK_MIN;
#endif
pthread_attr_setstacksize(&thread_attr, thread_stack_size);
#ifdef USE_PTHREAD_EXTRAS
/* Guard stack overflow with a 2k databuffer */
pthread_attr_setguardsize(&thread_attr, 2048);
#endif
#ifdef PTHREAD_CREATE_JOINABLE /* needed on SCO */
pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
#endif
tmpThread->func= p_thread_func;
tmpThread->object= p_thread_arg;
result = pthread_create(&tmpThread->thread,
&thread_attr,
ndb_thread_wrapper,
tmpThread);
if (result != 0)
{
NdbMem_Free((char *)tmpThread);
tmpThread = 0;
}
pthread_attr_destroy(&thread_attr);
DBUG_PRINT("exit",("ret: 0x%lx", (long) tmpThread));
DBUG_RETURN(tmpThread);
}
void NdbThread_Destroy(struct NdbThread** p_thread)
{
DBUG_ENTER("NdbThread_Destroy");
if (*p_thread != NULL){
DBUG_PRINT("enter",("*p_thread: 0x%lx", (long) *p_thread));
free(* p_thread);
* p_thread = 0;
}
DBUG_VOID_RETURN;
}
int NdbThread_WaitFor(struct NdbThread* p_wait_thread, void** status)
{
int result;
if (p_wait_thread == NULL)
return 0;
if (p_wait_thread->thread == 0)
return 0;
result = pthread_join(p_wait_thread->thread, status);
return result;
}
void NdbThread_Exit(void *status)
{
my_thread_end();
pthread_exit(status);
}
int NdbThread_SetConcurrencyLevel(int level)
{
#ifdef USE_PTHREAD_EXTRAS
return pthread_setconcurrency(level);
#else
(void)level; /* remove warning for unused parameter */
return 0;
#endif
}
|
