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
|
// $Id$
#define ACE_BUILD_DLL
#include "ace/Task.h"
#include "ace/Module.h"
#if !defined (ACE_HAS_WINCE)
#include "ace/Service_Config.h"
#endif /* !ACE_HAS_WINCE */
#if !defined (__ACE_INLINE__)
#include "ace/Task.i"
#endif /* __ACE_INLINE__ */
ACE_RCSID(ace, Task, "$Id$")
ACE_Task_Base::~ACE_Task_Base (void)
{
}
ACE_Task_Base::ACE_Task_Base (ACE_Thread_Manager *thr_man)
: thr_count_ (0),
thr_mgr_ (thr_man),
flags_ (0),
grp_id_ (0)
{
}
// Wait for all threads running in a task to exit.
int
ACE_Task_Base::wait (void)
{
ACE_TRACE ("ACE_Task_Base::wait");
// If we don't have a thread manager, we probably were never
// activated.
if (this->thr_mgr () != 0)
return this->thr_mgr ()->wait_task (this);
else
return 0;
}
// Suspend a task.
int
ACE_Task_Base::suspend (void)
{
ACE_TRACE ("ACE_Task_Base::suspend");
ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1));
if (this->thr_count_ > 0)
return this->thr_mgr_->suspend_task (this);
else
return 0;
}
// Resume a suspended task.
int
ACE_Task_Base::resume (void)
{
ACE_TRACE ("ACE_Task_Base::resume");
ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1));
if (this->thr_count_ > 0)
return this->thr_mgr_->resume_task (this);
else
return 0;
}
int
ACE_Task_Base::activate (long flags,
int n_threads,
int force_active,
long priority,
int grp_id,
ACE_Task_Base *task,
ACE_hthread_t thread_handles[],
void *stack[],
size_t stack_size[],
ACE_thread_t thread_names[])
{
ACE_TRACE ("ACE_Task_Base::activate");
#if defined (ACE_MT_SAFE) && (ACE_MT_SAFE != 0)
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1);
// If the task passed in is zero, we will use <this>
if (task == 0)
task = this;
if (this->thr_count_ > 0 && force_active == 0)
return 1; // Already active.
else
this->thr_count_ += n_threads;
// Use the ACE_Thread_Manager singleton if we're running as an
// active object and the caller didn't supply us with a
// Thread_Manager.
if (this->thr_mgr_ == 0)
this->thr_mgr_ = ACE_Thread_Manager::instance ();
if (thread_names == 0)
// thread names were not specified
this->grp_id_ =
this->thr_mgr_->spawn_n (n_threads,
ACE_THR_FUNC (&ACE_Task_Base::svc_run),
(void *) this,
flags,
priority,
grp_id,
task,
thread_handles,
stack,
stack_size);
else
// thread names were specified
this->grp_id_ =
this->thr_mgr_->spawn_n (thread_names,
n_threads,
ACE_THR_FUNC (&ACE_Task_Base::svc_run),
(void *) this,
flags,
priority,
grp_id,
stack,
stack_size,
thread_handles);
if (this->grp_id_ == -1)
return -1;
else
return 0;
#else
{
// Keep the compiler from complaining.
ACE_UNUSED_ARG (flags);
ACE_UNUSED_ARG (n_threads);
ACE_UNUSED_ARG (force_active);
ACE_UNUSED_ARG (priority);
ACE_UNUSED_ARG (grp_id);
ACE_UNUSED_ARG (task);
ACE_UNUSED_ARG (thread_handles);
ACE_UNUSED_ARG (stack);
ACE_UNUSED_ARG (stack_size);
ACE_UNUSED_ARG (thread_names);
ACE_NOTSUP_RETURN (-1);
}
#endif /* ACE_MT_SAFE */
}
void
ACE_Task_Base::cleanup (void *object, void *)
{
ACE_Task_Base *t = (ACE_Task_Base *) object;
// The thread count must be decremented first in case the <close>
// hook does something crazy like "delete this".
t->thr_count_dec ();
// @@ Is it possible to pass in the exit status somehow?
t->close ();
}
#if defined (ACE_HAS_SIG_C_FUNC)
extern "C" void
ACE_Task_Base_cleanup (void *object, void *)
{
ACE_Task_Base::cleanup (object, 0);
}
#endif /* ACE_HAS_SIG_C_FUNC */
void *
ACE_Task_Base::svc_run (void *args)
{
ACE_TRACE ("ACE_Task_Base::svc_run");
ACE_Task_Base *t = (ACE_Task_Base *) args;
// Register ourself with our <Thread_Manager>'s thread exit hook
// mechanism so that our close() hook will be sure to get invoked
// when this thread exits.
#if defined ACE_HAS_SIG_C_FUNC
t->thr_mgr ()->at_exit (t, ACE_Task_Base_cleanup, 0);
#else
t->thr_mgr ()->at_exit (t, ACE_Task_Base::cleanup, 0);
#endif /* ACE_HAS_SIG_C_FUNC */
// Call the Task's svc() hook method.
return (void *) t->svc ();
/* NOTREACHED */
}
// Forward the call to close() so that existing applications don't
// break.
int
ACE_Task_Base::module_closed (void)
{
return this->close (1);
}
|
