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
|
/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// Thread.h
//
// = AUTHOR
// Doug Schmidt
//
// ============================================================================
#if !defined (ACE_THREAD_H)
#define ACE_THREAD_H
#include "ace/ACE.h"
class ACE_Export ACE_Thread
{
// = TITLE
// Provides a wrapper for threads.
//
// = DESCRIPTION
// This class provides a common interface that is mapped onto
// either POSIX Pthreads, Solaris threads, or Win32 threads.
public:
static int spawn (ACE_THR_FUNC func,
void *arg = 0,
long flags = THR_NEW_LWP,
ACE_thread_t *t_id = 0,
ACE_hthread_t *t_handle = 0,
u_int priority = 0,
void *stack = 0,
size_t stack_size = 0);
// Spawn a new thread, which executes "func" with argument "arg".
static int spawn_n (size_t n,
ACE_THR_FUNC func,
void *arg = 0,
long flags = THR_NEW_LWP,
u_int priority = 0,
void *stack[] = 0,
size_t stack_size[] = 0);
// Spawn N new threads, which execute <func> with argument <arg>.
// If <stack> != 0 it is assumed to be an array of <n> pointers to
// the base of the stacks to use for the threads being spawned.
// Likewise, if <stack_size> != 0 it is assumed to be an array of
// <n> values indicating how big each of the corresponding <stack>s
// are. Returns the number of threads actually spawned (if this
// doesn't equal the number requested then something has gone wrong
// and <errno> will explain...).
static int spawn_n (ACE_thread_t thread_ids[],
size_t n,
ACE_THR_FUNC func,
void *arg,
long flags,
u_int priority = 0,
void *stack[] = 0,
size_t stack_size[] = 0,
ACE_hthread_t thread_handles[] = 0);
// Spawn N new threads, which execute <func> with argument <arg>.
// The thread_ids of successfully spawned threads will be placed
// into the <thread_ids> buffer (which must be the same size as
// <n>). If <stack> != 0 it is assumed to be an array of <n>
// pointers to the base of the stacks to use for the threads being
// spawned. If <stack_size> != 0 it is assumed to be an array of
// <n> values indicating how big each of the corresponding <stack>s
// are. If <thread_handles> != 0 it is assumed to be an array of
// <n> thread_handles that will be assigned the values of the thread
// handles being spawned. Returns the number of threads actually
// spawned (if this doesn't equal the number requested then
// something has gone wrong and <errno> will explain...).
static int join (const ACE_Thread_ID &,
void **status = 0);
// Wait for one or more threads to exit.
static int join (ACE_thread_t,
ACE_thread_t *,
void **status = 0);
// Wait for one or more threads to exit.
static int join (ACE_hthread_t,
void ** = 0);
// Wait for one thread to exit.
static int resume (ACE_hthread_t);
// Continue the execution of a previously suspended thread.
static int suspend (ACE_hthread_t);
// Suspend the execution of a particular thread.
static int getprio (ACE_hthread_t, int &prio);
// Get the priority of a particular thread.
static int setprio (ACE_hthread_t, int prio);
// Set the priority of a particular thread.
static int kill (ACE_thread_t, int signum);
// Send a signal to the thread.
static void yield (void);
// Yield the thread to another.
static void self (ACE_hthread_t &t_handle);
// Return the unique kernel handle of the thread. Note that on
// Win32 this is actually a pseudohandle, which cannot be shared
// with other processes or waited on by threads. To locate the real
// handle, please use the <ACE_Thread_Manager::thr_self> method.
static ACE_thread_t self (void);
// Return the unique ID of the thread.
static void exit (void *status = 0);
// Exit the current thread and return "status".
static int getconcurrency (void);
// Get the LWP concurrency level of the process.
static int setconcurrency (int new_level);
// Set the LWP concurrency level of the process.
static int sigsetmask (int how,
const sigset_t *set,
sigset_t *oset = 0);
// Change and/or examine calling thread's signal mask.
static int keycreate (ACE_thread_key_t *keyp,
#if defined (ACE_HAS_THR_C_DEST)
ACE_THR_C_DEST destructor,
#else
ACE_THR_DEST destructor,
#endif /* ACE_HAS_THR_C_DEST */
void * = 0);
// Allocates a <keyp> that is used to identify data that is specific
// to each thread in the process. The key is global to all threads
// in the process.
static int keyfree (ACE_thread_key_t key);
// Free up the key so that other threads can reuse it.
static int setspecific (ACE_thread_key_t key,
void *value);
// Bind value to the thread-specific data key, <key>, for the calling
// thread.
static int getspecific (ACE_thread_key_t key,
void **valuep);
// Stores the current value bound to <key> for the calling thread
// into the location pointed to by <valuep>.
static int disablecancel (struct cancel_state *old_state);
// Disable thread cancellation.
static int enablecancel (struct cancel_state *old_state,
int flag);
// Enable thread cancellation.
static int setcancelstate (struct cancel_state &new_state,
struct cancel_state *old_state);
// Set the cancellation state.
static int cancel (ACE_thread_t t_id);
// Cancel a thread.
static void testcancel (void);
// Test the cancel.
private:
ACE_Thread (void);
// Ensure that we don't get instantiated.
};
#if defined (__ACE_INLINE__)
#include "ace/Thread.i"
#endif /* __ACE_INLINE__ */
#endif /* ACE_THREAD_H */
|
