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
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2013-2018 Linaro Limited
* Copyright (c) 2021 Nokia
*/
#include <odp_posix_extensions.h>
#include <sched.h>
#include <odp/api/atomic.h>
#include <odp/api/thread.h>
#include <odp/api/thrmask.h>
#include <odp/api/spinlock.h>
#include <odp_init_internal.h>
#include <odp_config_internal.h>
#include <odp_debug_internal.h>
#include <odp/api/shared_memory.h>
#include <odp/api/align.h>
#include <odp/api/cpu.h>
#include <odp_schedule_if.h>
#include <odp/api/plat/thread_inlines.h>
#include <odp_libconfig_internal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
typedef struct {
_odp_thread_state_t thr[ODP_THREAD_COUNT_MAX];
struct {
odp_thrmask_t all;
odp_thrmask_t worker;
odp_thrmask_t control;
};
odp_atomic_u32_t num;
odp_atomic_u32_t num_worker;
odp_atomic_u32_t num_control;
uint32_t num_max;
odp_spinlock_t lock;
} thread_globals_t;
/* Globals */
static thread_globals_t *thread_globals;
#include <odp/visibility_begin.h>
/* Thread local */
__thread _odp_thread_state_t *_odp_this_thread;
#include <odp/visibility_end.h>
int _odp_thread_init_global(void)
{
odp_shm_t shm;
int num_max = 0;
const char *str = "system.thread_count_max";
if (!_odp_libconfig_lookup_int(str, &num_max)) {
_ODP_ERR("Config option '%s' not found.\n", str);
return -1;
}
if (num_max <= 0) {
_ODP_ERR("Config option '%s' not valid.\n", str);
return -1;
}
if (num_max > ODP_THREAD_COUNT_MAX)
num_max = ODP_THREAD_COUNT_MAX;
shm = odp_shm_reserve("_odp_thread_global",
sizeof(thread_globals_t),
ODP_CACHE_LINE_SIZE, 0);
thread_globals = odp_shm_addr(shm);
if (thread_globals == NULL)
return -1;
memset(thread_globals, 0, sizeof(thread_globals_t));
odp_atomic_init_u32(&thread_globals->num, 0);
odp_atomic_init_u32(&thread_globals->num_worker, 0);
odp_atomic_init_u32(&thread_globals->num_control, 0);
odp_spinlock_init(&thread_globals->lock);
thread_globals->num_max = num_max;
_ODP_PRINT("System config:\n");
_ODP_PRINT(" system.thread_count_max: %d\n\n", num_max);
return 0;
}
int _odp_thread_term_global(void)
{
int ret, num;
num = odp_atomic_load_u32(&thread_globals->num);
if (num)
_ODP_ERR("%u threads have not called odp_term_local().\n", num);
ret = odp_shm_free(odp_shm_lookup("_odp_thread_global"));
if (ret < 0)
_ODP_ERR("shm free failed for _odp_thread_globals");
return ret;
}
static int alloc_id(odp_thread_type_t type)
{
int thr;
odp_thrmask_t *all = &thread_globals->all;
if (odp_atomic_load_u32(&thread_globals->num) >= thread_globals->num_max)
return -1;
for (thr = 0; thr < (int)thread_globals->num_max; thr++) {
if (odp_thrmask_isset(all, thr) == 0) {
odp_thrmask_set(all, thr);
if (type == ODP_THREAD_WORKER) {
odp_thrmask_set(&thread_globals->worker, thr);
odp_atomic_inc_u32(&thread_globals->num_worker);
} else {
odp_thrmask_set(&thread_globals->control, thr);
odp_atomic_inc_u32(&thread_globals->num_control);
}
odp_atomic_inc_u32(&thread_globals->num);
return thr;
}
}
return -2;
}
static int free_id(int thr)
{
odp_thrmask_t *all = &thread_globals->all;
if (thr < 0 || thr >= (int)thread_globals->num_max)
return -1;
if (odp_thrmask_isset(all, thr) == 0)
return -1;
odp_thrmask_clr(all, thr);
if (thread_globals->thr[thr].type == ODP_THREAD_WORKER) {
odp_thrmask_clr(&thread_globals->worker, thr);
odp_atomic_dec_u32(&thread_globals->num_worker);
} else {
odp_thrmask_clr(&thread_globals->control, thr);
odp_atomic_dec_u32(&thread_globals->num_control);
}
return odp_atomic_fetch_dec_u32(&thread_globals->num) - 1;
}
int _odp_thread_init_local(odp_thread_type_t type)
{
int id;
int cpu;
int group_all, group_worker, group_control;
group_all = 1;
group_worker = 1;
group_control = 1;
if (_odp_sched_fn->get_config) {
schedule_config_t schedule_config;
_odp_sched_fn->get_config(&schedule_config);
group_all = schedule_config.group_enable.all;
group_worker = schedule_config.group_enable.worker;
group_control = schedule_config.group_enable.control;
}
odp_spinlock_lock(&thread_globals->lock);
id = alloc_id(type);
odp_spinlock_unlock(&thread_globals->lock);
if (id < 0) {
_ODP_ERR("Too many threads\n");
return -1;
}
cpu = sched_getcpu();
if (cpu < 0) {
_ODP_ERR("getcpu failed\n");
return -1;
}
thread_globals->thr[id].thr = id;
thread_globals->thr[id].cpu = cpu;
thread_globals->thr[id].type = type;
_odp_this_thread = &thread_globals->thr[id];
if (group_all)
_odp_sched_fn->thr_add(ODP_SCHED_GROUP_ALL, id);
if (type == ODP_THREAD_WORKER && group_worker)
_odp_sched_fn->thr_add(ODP_SCHED_GROUP_WORKER, id);
if (type == ODP_THREAD_CONTROL && group_control)
_odp_sched_fn->thr_add(ODP_SCHED_GROUP_CONTROL, id);
return 0;
}
int _odp_thread_term_local(void)
{
int num;
int group_all, group_worker, group_control;
int id = _odp_this_thread->thr;
odp_thread_type_t type = _odp_this_thread->type;
group_all = 1;
group_worker = 1;
group_control = 1;
if (_odp_sched_fn->get_config) {
schedule_config_t schedule_config;
_odp_sched_fn->get_config(&schedule_config);
group_all = schedule_config.group_enable.all;
group_worker = schedule_config.group_enable.worker;
group_control = schedule_config.group_enable.control;
}
if (group_all)
_odp_sched_fn->thr_rem(ODP_SCHED_GROUP_ALL, id);
if (type == ODP_THREAD_WORKER && group_worker)
_odp_sched_fn->thr_rem(ODP_SCHED_GROUP_WORKER, id);
if (type == ODP_THREAD_CONTROL && group_control)
_odp_sched_fn->thr_rem(ODP_SCHED_GROUP_CONTROL, id);
_odp_this_thread = NULL;
odp_spinlock_lock(&thread_globals->lock);
num = free_id(id);
odp_spinlock_unlock(&thread_globals->lock);
if (num < 0) {
_ODP_ERR("failed to free thread id %i", id);
return -1;
}
return num; /* return a number of threads left */
}
int odp_thread_count(void)
{
return odp_atomic_load_u32(&thread_globals->num);
}
int odp_thread_control_count(void)
{
return odp_atomic_load_u32(&thread_globals->num_control);
}
int odp_thread_worker_count(void)
{
return odp_atomic_load_u32(&thread_globals->num_worker);
}
int odp_thread_count_max(void)
{
return thread_globals->num_max;
}
int odp_thread_control_count_max(void)
{
return thread_globals->num_max;
}
int odp_thread_worker_count_max(void)
{
return thread_globals->num_max;
}
int odp_thrmask_worker(odp_thrmask_t *mask)
{
uint32_t num_worker;
odp_spinlock_lock(&thread_globals->lock);
odp_thrmask_copy(mask, &thread_globals->worker);
num_worker = odp_atomic_load_u32(&thread_globals->num_worker);
odp_spinlock_unlock(&thread_globals->lock);
return num_worker;
}
int odp_thrmask_control(odp_thrmask_t *mask)
{
uint32_t num_control;
odp_spinlock_lock(&thread_globals->lock);
odp_thrmask_copy(mask, &thread_globals->control);
num_control = odp_atomic_load_u32(&thread_globals->num_control);
odp_spinlock_unlock(&thread_globals->lock);
return num_control;
}
|
