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authorNamhoon Kim <namhoonk@cs.unc.edu>2017-05-01 16:02:05 -0400
committerNamhoon Kim <namhoonk@cs.unc.edu>2017-05-01 16:02:05 -0400
commit11765fcf37057053065abd3715cf9cb46f2fa4db (patch)
tree8403d716bbcbd96493c481a82e7e02b5da9231e8 /bin/rt_pointer_spin.c
parentbfee87a910560e022b04c81a026b1f88522cd62f (diff)
RTSS17 submitwip-modechange
Diffstat (limited to 'bin/rt_pointer_spin.c')
-rw-r--r--bin/rt_pointer_spin.c439
1 files changed, 0 insertions, 439 deletions
diff --git a/bin/rt_pointer_spin.c b/bin/rt_pointer_spin.c
deleted file mode 100644
index 73e7b1d..0000000
--- a/bin/rt_pointer_spin.c
+++ /dev/null
@@ -1,439 +0,0 @@
1#include <sys/time.h>
2#include <sys/mman.h>
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <time.h>
8#include <string.h>
9#include <assert.h>
10#include <limits.h>
11
12
13#include "litmus.h"
14#include "common.h"
15#include "DISstressmarkRNG.h"
16
17#define MIN_FIELD_SIZE 16
18#define MAX_FIELD_SIZE 16777216
19#define MIN_WINDOW_SIZE 1
20#define MAX_WINDOW_SIZE 15
21#define MIN_HOP_LIMIT 1
22
23#define MAX_HOP_LIMIT 4294967295U
24
25#define MIN_SEED -2147483647
26#define MAX_SEED -1
27#define MIN_THREADS 1
28#define MAX_THREADS 256
29
30static char* progname;
31int loops = 1;
32struct timeval t1, t2;
33
34unsigned int *field;
35unsigned int f;
36unsigned short int w;
37unsigned int maxhops;
38int seed = -2;
39unsigned int n;
40
41clock_t startTime;
42
43struct threadS{
44unsigned int initial;
45unsigned int minStop;
46unsigned int maxStop;
47unsigned int hops;
48}*thread;
49
50unsigned int l;
51
52int init_job() {
53 //fscanf(stdin, "%lu %u %lu %ld %u",
54 // &f, &l, &maxhops, &seed, &n);
55
56 f = 1048570;
57 l = 15;
58 maxhops = 5120000;
59 n = 1;
60
61 assert ((f >= MIN_FIELD_SIZE) && (f <= MAX_FIELD_SIZE));
62 w = (unsigned int) l;
63 assert ((w >= MIN_WINDOW_SIZE) && (w <= MAX_WINDOW_SIZE));
64 assert (w % 2 == 1);
65 assert (f > w);
66 assert ((maxhops >= MIN_HOP_LIMIT) && (maxhops <= MAX_HOP_LIMIT));
67 assert ((seed >= MIN_SEED) && (seed <= MAX_SEED));
68
69 assert ((n >= MIN_THREADS) && (n <= MAX_THREADS));
70 if ((thread = (struct threadS *)malloc(n*sizeof(struct threadS))) == NULL)
71 return (-1);
72
73 /*for (l=0; l<n; l++){
74 //fscanf(stdin, "%lu %lu %lu",
75 //&(thread[l].initial), &(thread[l].minStop), &(thread[l].maxStop));
76 thread[l].initial = 10;
77 thread[l].minStop = f - thread[l].initial;
78 thread[l].maxStop = f - thread[l].initial;
79
80 assert ((thread[l].initial >= 0) && (thread[l].initial < f));
81 assert ((thread[l].minStop >= 0) && (thread[l].minStop < f));
82 assert ((thread[l].maxStop >= 0) && (thread[l].maxStop < f));
83 }
84*/
85 if ((field = (unsigned int *)malloc(f*sizeof(int))) == NULL)
86 return (-1);
87
88 //randInit(seed);
89 /*
90 for (l=0; l<f; l++){
91 field[l] = randInt(0, f-w);
92 }
93 */
94 return 0;
95}
96
97int main_job() {
98 f = randInt(16,65536);
99 w = randInt(0,7)*2 + 1;
100 maxhops = 32768;
101 n = 1;
102 for (l=0; l<n; l++){
103 //fscanf(stdin, "%lu %lu %lu",
104 //&(thread[l].initial), &(thread[l].minStop), &(thread[l].maxStop));
105 thread[l].initial = 10;
106 thread[l].minStop = f - thread[l].initial;
107 thread[l].maxStop = f - thread[l].initial;
108
109 assert ((thread[l].initial >= 0) && (thread[l].initial < f));
110 assert ((thread[l].minStop >= 0) && (thread[l].minStop < f));
111 assert ((thread[l].maxStop >= 0) && (thread[l].maxStop < f));
112 }
113
114 for (l=0; l<f; l++){
115 field[l] = randInt(0, f-w);
116 }
117
118for (l=0; l<n; l++) {
119 unsigned int index;
120 unsigned int minStop, maxStop;
121 unsigned int hops;
122
123 hops = 0;
124 minStop = thread[l].minStop;
125 maxStop = thread[l].maxStop;
126 index = thread[l].initial;
127 while ((hops < maxhops) &&
128 (!((index >= minStop) &&
129 (index < maxStop)))){
130
131 unsigned int ll, lll;
132 unsigned int max, min;
133 unsigned int partition;
134 unsigned int high;
135
136 partition = field[index];
137 max = MAX_FIELD_SIZE;
138 min = 0;
139 high = 0;
140
141 for (ll=0; ll<w; ll++){
142 unsigned int balance;
143 unsigned int x;
144 x = field[index+ll];
145
146 if (x > max) high++;
147 else if (x > min){ /* start else* */
148 partition = x;
149 balance = 0;
150 for (lll=ll+1; lll<w; lll++){
151 if (field[index+lll] > partition) balance++;
152 }/* end for loop */
153
154 if (balance+high == w/2) break;
155 else if (balance+high > w/2){
156 min = partition;
157 }/* end if */
158 else {
159 max = partition;
160 high++;
161 }/* end else */
162 }
163 if (min == max) break;
164 } /* end else* */
165 index = (partition+hops)%(f-w);
166 hops++;
167 }/* end loop ll */
168 thread[l].hops = hops;
169} /* end while */
170
171 return(0);
172}
173
174int post_job() {
175 if (field) {
176 free(field);
177 field = NULL;
178 }
179 if (thread) {
180 free(thread);
181 thread = NULL;
182 }
183 return 0;
184}
185
186static void usage(char *error) {
187 fprintf(stderr, "Error: %s\n", error);
188 fprintf(stderr,
189 "Usage:\n"
190 " rt_spin [COMMON-OPTS] WCET PERIOD DURATION\n"
191 " rt_spin [COMMON-OPTS] -f FILE [-o COLUMN] WCET PERIOD\n"
192 " rt_spin -l\n"
193 "\n"
194 "COMMON-OPTS = [-w] [-s SCALE]\n"
195 " [-p PARTITION/CLUSTER [-z CLUSTER SIZE]] [-c CLASS] [-m CRITICALITY LEVEL]\n"
196 "\n"
197 "WCET and PERIOD are microseconds, DURATION is seconds.\n");
198 exit(EXIT_FAILURE);
199}
200
201inline unsigned long get_cyclecount (void)
202{
203 unsigned long value;
204 // Read CCNT Register
205 asm volatile ("MRC p15, 0, %0, c9, c13, 0\t\n": "=r"(value));
206 return value;
207}
208
209static int loop_main(double exec_time, double emergency_exit)
210{
211 double last_loop = 0, loop_start;
212 int tmp = 0;
213
214 double start = cputime();
215 double now = cputime();
216
217 while (now + last_loop < start + exec_time) {
218 loop_start = now;
219 tmp += main_job();
220 now = cputime();
221 last_loop = now - loop_start;
222 if (emergency_exit && wctime() > emergency_exit) {
223 /* Oops --- this should only be possible if the execution time tracking
224 * is broken in the LITMUS^RT kernel. */
225 fprintf(stderr, "!!! rtspin/%d emergency exit!\n", getpid());
226 fprintf(stderr, "Something is seriously wrong! Do not ignore this.\n");
227 break;
228 }
229 }
230
231 return tmp;
232}
233
234static int job(double exec_time, double program_end)
235{
236 if (wctime() > program_end)
237 return 0;
238 else {
239 register int iter = 0;
240 //register unsigned long t;
241 //t = get_cyclecount();
242 //init_job();
243 //gettimeofday(&t1, NULL);
244 loop_main(exec_time, program_end + 1);
245 //t = get_cyclecount() - t;
246 //printf("%ld cycles\n", t);
247 //gettimeofday(&t2, NULL);
248 //printf("%ld\n", ((t2.tv_sec * 1000000 + t2.tv_usec) - (t1.tv_sec * 1000000 + t1.tv_usec)));
249 //post_job();
250 sleep_next_period();
251 return 1;
252 }
253}
254
255#define OPTSTR "p:wves:l:m:i:b:"
256int main(int argc, char** argv)
257{
258 int ret;
259 lt_t wcet;
260 lt_t period;
261 lt_t budget;
262 double wcet_ms, period_ms, budget_ms;
263 unsigned int priority = LITMUS_NO_PRIORITY;
264 int migrate = 0;
265 int cluster = 0;
266 int opt;
267 int wait = 0;
268 int want_enforcement = 0;
269 double duration = 0, start = 0;
270 double scale = 1.0;
271 task_class_t class = RT_CLASS_HARD;
272 struct rt_task param;
273 struct mc2_task mc2_param;
274 struct reservation_config config;
275 int res_type = PERIODIC_POLLING;
276
277 progname = argv[0];
278
279 /* default for reservation */
280 config.id = 0;
281 config.priority = LITMUS_NO_PRIORITY; /* use EDF by default */
282 config.cpu = -1;
283
284 mc2_param.crit = CRIT_LEVEL_C;
285
286 budget_ms = 10;
287
288 while ((opt = getopt(argc, argv, OPTSTR)) != -1) {
289 switch (opt) {
290 case 'w':
291 wait = 1;
292 break;
293 case 'p':
294 cluster = atoi(optarg);
295 migrate = 1;
296 config.cpu = cluster;
297 break;
298 case 'e':
299 want_enforcement = 1;
300 break;
301 case 's':
302 scale = atof(optarg);
303 break;
304 case 'l':
305 loops = atoi(optarg);
306 break;
307 case 'm':
308 mc2_param.crit = atoi(optarg);
309 if (mc2_param.crit < CRIT_LEVEL_A || mc2_param.crit == NUM_CRIT_LEVELS) {
310 usage("Invalid criticality level.");
311 }
312 res_type = PERIODIC_POLLING;
313 break;
314 case 'b':
315 budget_ms = atof(optarg);
316 break;
317 case 'i':
318 config.priority = atoi(optarg);
319 break;
320 case ':':
321 usage("Argument missing.");
322 break;
323 case '?':
324 default:
325 usage("Bad argument.");
326 break;
327 }
328 }
329
330 if (mc2_param.crit > CRIT_LEVEL_A && config.priority != LITMUS_NO_PRIORITY)
331 usage("Bad criticailty level or priority");
332
333 if (argc - optind < 3)
334 usage("Arguments missing.");
335
336 wcet_ms = atof(argv[optind + 0]);
337 period_ms = atof(argv[optind + 1]);
338
339 wcet = ms2ns(wcet_ms);
340 period = ms2ns(period_ms);
341 budget = ms2ns(budget_ms);
342
343 if (wcet <= 0)
344 usage("The worst-case execution time must be a "
345 "positive number.");
346 if (period <= 0)
347 usage("The period must be a positive number.");
348 if (wcet > period) {
349 usage("The worst-case execution time must not "
350 "exceed the period.");
351 }
352
353 duration = atof(argv[optind + 2]);
354
355 if (migrate) {
356 ret = be_migrate_to_domain(cluster);
357 if (ret < 0)
358 bail_out("could not migrate to target partition or cluster.");
359 }
360
361 /* reservation config */
362 config.id = gettid();
363
364 config.polling_params.budget = budget;
365 config.polling_params.period = period;
366 config.polling_params.offset = 0;
367 config.polling_params.relative_deadline = 0;
368 if (config.polling_params.budget > config.polling_params.period) {
369 usage("The budget must not exceed the period.");
370 }
371
372 /* create a reservation */
373 ret = reservation_create(res_type, &config);
374 if (ret < 0) {
375 bail_out("failed to create reservation.");
376 }
377 //srand (time(NULL));
378 //randInit((-rand()%65535)-2);
379 randInit(-2);
380
381 init_job();
382
383 init_rt_task_param(&param);
384 param.exec_cost = wcet;
385 param.period = period;
386 param.priority = priority;
387 param.cls = class;
388 param.release_policy = TASK_PERIODIC;
389 param.budget_policy = (want_enforcement) ?
390 PRECISE_ENFORCEMENT : NO_ENFORCEMENT;
391 if (migrate) {
392 param.cpu = gettid();
393 }
394 ret = set_rt_task_param(gettid(), &param);
395
396 if (ret < 0)
397 bail_out("could not setup rt task params");
398
399 mc2_param.res_id = gettid();
400 ret = set_mc2_task_param(gettid(), &mc2_param);
401//printf("SET_MC2_TASK\n");
402 if (ret < 0)
403 bail_out("could not setup mc2 task params");
404
405 init_litmus();
406//printf("CALL\n");
407 if (mc2_param.crit == CRIT_LEVEL_C)
408 set_page_color(-1);
409 else if (mc2_param.crit < CRIT_LEVEL_C)
410 set_page_color(config.cpu);
411//printf("CALL\n");
412
413//printf("INIT_LITMUS\n");
414 start = wctime();
415 ret = task_mode(LITMUS_RT_TASK);
416//printf("TASK_MODE\n");
417 if (ret != 0)
418 bail_out("could not become RT task");
419
420
421 if (wait) {
422//printf("BEFORE WAIT\n");
423 ret = wait_for_ts_release();
424 if (ret != 0)
425 bail_out("wait_for_ts_release()");
426 start = wctime();
427 }
428
429 while (job(wcet_ms * 0.001 * scale, start + duration)) {};
430
431 ret = task_mode(BACKGROUND_TASK);
432 if (ret != 0)
433 bail_out("could not become regular task (huh?)");
434
435 reservation_destroy(gettid(), config.cpu);
436 post_job();
437 //printf("%s/%d finished.\n",progname, gettid());
438 return 0;
439}
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