model-net-lp.c 23.1 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11
/*
 * Copyright (C) 2014 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
 */

#include <stddef.h>
#include <assert.h>
#include "codes/model-net.h"
#include "codes/model-net-method.h"
#include "codes/model-net-lp.h"
12
#include "codes/model-net-sched.h"
13 14 15 16 17 18 19 20 21 22 23 24 25
#include "codes/codes_mapping.h"
#include "codes/jenkins-hash.h"

#define MN_NAME "model_net_base"

/**** BEGIN SIMULATION DATA STRUCTURES ****/

int model_net_base_magic;

// message-type specific offsets - don't want to get bitten later by alignment
// issues...
static int msg_offsets[MAX_NETS];

26 27
typedef struct model_net_base_params_s {
    model_net_sched_cfg_params sched_params;
28
    uint64_t packet_size;
29
    int use_recv_queue;
30 31
} model_net_base_params;

32
/* annotation-specific parameters (unannotated entry occurs at the
33 34 35 36 37
 * last index) */
static int                       num_params = 0;
static const char              * annos[CONFIGURATION_MAX_ANNOS];
static model_net_base_params     all_params[CONFIGURATION_MAX_ANNOS];

38 39
static tw_stime mn_sample_interval = 0.0;
static int mn_sample_enabled = 0;
40
static tw_stime mn_sample_end = 0.0;
41

42 43
typedef struct model_net_base_state {
    int net_id;
44
    // whether scheduler loop is running
45
    int in_sched_send_loop, in_sched_recv_loop;
46 47 48
    // unique message id counter. This doesn't get decremented on RC to prevent
    // optimistic orderings using "stale" ids
    uint64_t msg_id;
49 50
    // model-net schedulers
    model_net_sched *sched_send, *sched_recv;
51 52
    // parameters
    const model_net_base_params * params;
53 54 55 56 57 58
    // lp type and state of underlying model net method - cache here so we
    // don't have to constantly look up
    const tw_lptype *sub_type;
    void *sub_state;
} model_net_base_state;

59

60 61 62 63
/**** END SIMULATION DATA STRUCTURES ****/

/**** BEGIN LP, EVENT PROCESSING FUNCTION DECLS ****/

64
/* ROSS LP processing functions */
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
static void model_net_base_lp_init(
        model_net_base_state * ns,
        tw_lp * lp);
static void model_net_base_event(
        model_net_base_state * ns,
        tw_bf * b,
        model_net_wrap_msg * m,
        tw_lp * lp);
static void model_net_base_event_rc(
        model_net_base_state * ns,
        tw_bf * b,
        model_net_wrap_msg * m,
        tw_lp * lp);
static void model_net_base_finalize(
        model_net_base_state * ns,
        tw_lp * lp);

/* event type handlers */
static void handle_new_msg(
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp);
static void handle_sched_next(
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp);
static void handle_new_msg_rc(
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp);
static void handle_sched_next_rc(
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp);

/* ROSS function pointer table for this LP */
tw_lptype model_net_base_lp = {
106 107 108 109
    (init_f) model_net_base_lp_init,
    (pre_run_f) NULL,
    (event_f) model_net_base_event,
    (revent_f) model_net_base_event_rc,
110 111
    (commit_f) NULL,
    (final_f)  model_net_base_finalize,
112 113
    (map_f) codes_mapping,
    sizeof(model_net_base_state),
114 115
};

116 117 118 119
/* setup for the ROSS event tracing
 * can have a different function for  rbev_trace_f and ev_trace_f
 * but right now it is set to the same function for both
 */
120 121
void mn_event_collect(model_net_wrap_msg *m, tw_lp *lp, char *buffer)
{
122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141
    // assigning large numbers to message types to make it easier to
    // determine which messages are model net base LP msgs
    int type;
    switch (m->h.event_type){
        case MN_BASE_NEW_MSG:
            type = 9000;
            break;
        case MN_BASE_SCHED_NEXT:
            type = 9001;
            break;
        case MN_BASE_SAMPLE: 
            type = 9002;
            break;
        case MN_BASE_PASS:
            type = 9003;
            break;
        default:
            type = 9004;
            break;
    }
142 143 144
    memcpy(buffer, &type, sizeof(type));
}

145 146
st_trace_type mn_trace_types = {
    (rbev_trace_f) mn_event_collect,
147
     sizeof(int),
148
     (ev_trace_f) mn_event_collect,
149 150 151
     sizeof(int),
};

152 153 154 155
/**** END LP, EVENT PROCESSING FUNCTION DECLS ****/

/**** BEGIN IMPLEMENTATIONS ****/

156
void model_net_enable_sampling(tw_stime interval, tw_stime end)
157 158
{
    mn_sample_interval = interval;
159
    mn_sample_end = end;
160 161 162 163 164 165 166 167 168 169 170
    mn_sample_enabled = 1;
}

int model_net_sampling_enabled(void)
{
    return mn_sample_enabled;
}

// schedule sample event - want to be precise, so no noise here
static void issue_sample_event(tw_lp *lp)
{
171 172 173 174 175 176
    if (tw_now(lp) + mn_sample_interval < mn_sample_end + 0.0001) {
        tw_event *e = tw_event_new(lp->gid, mn_sample_interval, lp);
        model_net_wrap_msg *m = tw_event_data(e);
        msg_set_header(model_net_base_magic, MN_BASE_SAMPLE, lp->gid, &m->h);
        tw_event_send(e);
    }
177 178
}

179 180 181 182
void model_net_base_register(int *do_config_nets){
    // here, we initialize ALL lp types to use the base type
    for (int i = 0; i < MAX_NETS; i++){
        if (do_config_nets[i]){
183 184 185 186 187 188 189
            // some model-net lps need custom registration hooks (dragonfly).
            // Those that don't NULL out the reg. function
            if (method_array[i]->mn_register == NULL)
                lp_type_register(model_net_lp_config_names[i],
                        &model_net_base_lp);
            else
                method_array[i]->mn_register(&model_net_base_lp);
190
            if (g_st_ev_trace) // for ROSS event tracing
191
            {
192 193
                if (method_array[i]->mn_trace_register == NULL)
                    trace_type_register(model_net_lp_config_names[i], &mn_trace_types);
194
                else
195
                    method_array[i]->mn_trace_register(&mn_trace_types);
196
            }
197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216
        }
    }
}

static void base_read_config(const char * anno, model_net_base_params *p){
    char sched[MAX_NAME_LENGTH];
    long int packet_size_l = 0;
    uint64_t packet_size;
    int ret;

    ret = configuration_get_value(&config, "PARAMS", "modelnet_scheduler",
            anno, sched, MAX_NAME_LENGTH);
    configuration_get_value_longint(&config, "PARAMS", "packet_size", anno,
            &packet_size_l);
    packet_size = packet_size_l;

    if (ret > 0){
        int i;
        for (i = 0; i < MAX_SCHEDS; i++){
            if (strcmp(sched_names[i], sched) == 0){
217
                p->sched_params.type = i;
218 219 220 221 222
                break;
            }
        }
        if (i == MAX_SCHEDS){
            tw_error(TW_LOC,"Unknown value for PARAMS:modelnet-scheduler : "
223
                    "%s", sched);
224 225 226 227
        }
    }
    else{
        // default: FCFS
228
        p->sched_params.type = MN_SCHED_FCFS;
229 230
    }

231 232
    // get scheduler-specific parameters
    if (p->sched_params.type == MN_SCHED_PRIO){
233
        // prio scheduler uses default parameters
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
        int             * num_prios = &p->sched_params.u.prio.num_prios;
        enum sched_type * sub_stype = &p->sched_params.u.prio.sub_stype;
        // number of priorities to allocate
        ret = configuration_get_value_int(&config, "PARAMS",
                "prio-sched-num-prios", anno, num_prios);
        if (ret != 0)
            *num_prios = 10;

        ret = configuration_get_value(&config, "PARAMS",
                "prio-sched-sub-sched", anno, sched, MAX_NAME_LENGTH);
        if (ret == 0)
            *sub_stype = MN_SCHED_FCFS;
        else{
            int i;
            for (i = 0; i < MAX_SCHEDS; i++){
                if (strcmp(sched_names[i], sched) == 0){
                    *sub_stype = i;
                    break;
                }
            }
            if (i == MAX_SCHEDS){
                tw_error(TW_LOC, "Unknown value for "
                        "PARAMS:prio-sched-sub-sched %s", sched);
            }
            else if (i == MN_SCHED_PRIO){
                tw_error(TW_LOC, "priority scheduler cannot be used as a "
                        "priority scheduler's sub sched "
                        "(PARAMS:prio-sched-sub-sched)");
            }
        }
264 265
    }

266 267 268 269 270 271 272 273 274 275 276 277 278
    if (p->sched_params.type == MN_SCHED_FCFS_FULL ||
            (p->sched_params.type == MN_SCHED_PRIO &&
             p->sched_params.u.prio.sub_stype == MN_SCHED_FCFS_FULL)){
        // override packet size to something huge (leave a bit in the unlikely
        // case that an op using packet size causes overflow)
        packet_size = 1ull << 62;
    }
    else if (!packet_size &&
            (p->sched_params.type != MN_SCHED_FCFS_FULL ||
             (p->sched_params.type == MN_SCHED_PRIO &&
              p->sched_params.u.prio.sub_stype != MN_SCHED_FCFS_FULL))){
        packet_size = 512;
        fprintf(stderr, "WARNING, no packet size specified, setting packet "
Jonathan Jenkins's avatar
Jonathan Jenkins committed
279
                "size to %llu\n", LLU(packet_size));
280 281 282
    }


283 284 285 286
    p->packet_size = packet_size;
}

void model_net_base_configure(){
287 288 289 290 291
    uint32_t h1=0, h2=0;

    bj_hashlittle2(MN_NAME, strlen(MN_NAME), &h1, &h2);
    model_net_base_magic = h1+h2;

292 293 294
    // set up offsets - doesn't matter if they are actually used or not
    msg_offsets[SIMPLENET] =
        offsetof(model_net_wrap_msg, msg.m_snet);
Jonathan Jenkins's avatar
Jonathan Jenkins committed
295 296
    msg_offsets[SIMPLEP2P] =
        offsetof(model_net_wrap_msg, msg.m_sp2p);
297 298 299 300
    msg_offsets[TORUS] =
        offsetof(model_net_wrap_msg, msg.m_torus);
    msg_offsets[DRAGONFLY] =
        offsetof(model_net_wrap_msg, msg.m_dfly);
301 302 303
    // note: dragonfly router uses the same event struct
    msg_offsets[DRAGONFLY_ROUTER] =
        offsetof(model_net_wrap_msg, msg.m_dfly);
304 305 306 307
    msg_offsets[DRAGONFLY_CUSTOM] =
        offsetof(model_net_wrap_msg, msg.m_dfly);
    msg_offsets[DRAGONFLY_CUSTOM_ROUTER] =
        offsetof(model_net_wrap_msg, msg.m_dfly);
308 309
    msg_offsets[SLIMFLY] =
        offsetof(model_net_wrap_msg, msg.m_slim);
310 311
    msg_offsets[FATTREE] =
	offsetof(model_net_wrap_msg, msg.m_fat);
312 313
    msg_offsets[LOGGP] =
        offsetof(model_net_wrap_msg, msg.m_loggp);
314

315 316 317 318 319 320 321 322 323 324
    // perform the configuration(s)
    // This part is tricky, as we basically have to look up all annotations that
    // have LP names of the form modelnet_*. For each of those, we need to read
    // the base parameters
    // - the init is a little easier as we can use the LP-id to look up the
    // annotation

    // first grab all of the annotations and store locally
    for (int c = 0; c < lpconf.lpannos_count; c++){
        const config_anno_map_t *amap = &lpconf.lpannos[c];
325
        if (strncmp("modelnet_", amap->lp_name.ptr, 9) == 0){
326 327 328
            for (int n = 0; n < amap->num_annos; n++){
                int a;
                for (a = 0; a < num_params; a++){
329 330
                    if (annos[a] != NULL && amap->annotations[n].ptr != NULL &&
                            strcmp(amap->annotations[n].ptr, annos[a]) == 0){
331 332 333 334 335
                        break;
                    }
                }
                if (a == num_params){
                    // found a new annotation
336
                    annos[num_params++] = amap->annotations[n].ptr;
337 338 339 340 341 342 343 344 345 346 347 348 349
                }
            }
            if (amap->has_unanno_lp){
                int a;
                for (a = 0; a < num_params; a++){
                    if (annos[a] == NULL)
                        break;
                }
                if (a == num_params){
                    // found a new (empty) annotation
                    annos[num_params++] = NULL;
                }
            }
350 351
        }
    }
352 353 354 355 356 357

    // now that we have all of the annos for all of the networks, loop through
    // and read the configs
    for (int i = 0; i < num_params; i++){
        base_read_config(annos[i], &all_params[i]);
    }
358 359 360 361 362 363
}

void model_net_base_lp_init(
        model_net_base_state * ns,
        tw_lp * lp){
    // obtain the underlying lp type through codes-mapping
364
    char lp_type_name[MAX_NAME_LENGTH], anno[MAX_NAME_LENGTH];
365 366
    int dummy;

367
    codes_mapping_get_lp_info(lp->gid, NULL, &dummy,
368 369
            lp_type_name, &dummy, anno, &dummy, &dummy);

370 371
    ns->msg_id = 0;

372 373 374 375 376 377 378 379
    // get annotation-specific parameters
    for (int i = 0; i < num_params; i++){
        if ((anno[0]=='\0' && annos[i] == NULL) ||
                strcmp(anno, annos[i]) == 0){
            ns->params = &all_params[i];
            break;
        }
    }
380 381 382 383 384 385 386 387 388

    // find the corresponding method name / index
    for (int i = 0; i < MAX_NETS; i++){
        if (strcmp(model_net_lp_config_names[i], lp_type_name) == 0){
            ns->net_id = i;
            break;
        }
    }

389 390
    ns->sched_send = malloc(sizeof(model_net_sched));
    ns->sched_recv = malloc(sizeof(model_net_sched));
391
    // init both the sender queue and the 'receiver' queue
392 393 394 395
    model_net_sched_init(&ns->params->sched_params, 0, method_array[ns->net_id],
            ns->sched_send);
    model_net_sched_init(&ns->params->sched_params, 1, method_array[ns->net_id],
            ns->sched_recv);
396

397 398 399 400 401 402 403
    ns->sub_type = model_net_get_lp_type(ns->net_id);
    // NOTE: some models actually expect LP state to be 0 initialized...
    // *cough anything that uses mn_stats_array cough*
    ns->sub_state = calloc(1, ns->sub_type->state_sz);

    // initialize the model-net method
    ns->sub_type->init(ns->sub_state, lp);
404 405 406 407 408 409

    // check validity of sampling function
    event_f  sample  = method_array[ns->net_id]->mn_sample_fn;
    revent_f rsample = method_array[ns->net_id]->mn_sample_rc_fn;
    if (model_net_sampling_enabled()) {
        if (sample == NULL) {
410 411 412
            /* MM: Commented out temporarily--- */
            //tw_error(TW_LOC,
            //        "Sampling requested for a model that doesn't provide it\n");
413 414 415 416
        }
        else if (rsample == NULL &&
                (g_tw_synchronization_protocol == OPTIMISTIC ||
                 g_tw_synchronization_protocol == OPTIMISTIC_DEBUG)) {
417 418 419
            /* MM: Commented out temporarily--- */
            //tw_error(TW_LOC,
            //        "Sampling requested for a model that doesn't provide it\n");
420 421 422 423 424 425 426 427
        }
        else {
            init_f sinit = method_array[ns->net_id]->mn_sample_init_fn;
            if (sinit != NULL)
                sinit(ns->sub_state, lp);
            issue_sample_event(lp);
        }
    }
428 429 430 431 432 433 434
}

void model_net_base_event(
        model_net_base_state * ns,
        tw_bf * b,
        model_net_wrap_msg * m,
        tw_lp * lp){
435 436 437 438

    if(m->h.magic != model_net_base_magic)
        printf("\n LP ID mismatched %d ", lp->gid);

439
    assert(m->h.magic == model_net_base_magic);
440 441

    void * sub_msg;
442
    switch (m->h.event_type){
443 444 445 446 447 448
        case MN_BASE_NEW_MSG:
            handle_new_msg(ns, b, m, lp);
            break;
        case MN_BASE_SCHED_NEXT:
            handle_sched_next(ns, b, m, lp);
            break;
449 450 451 452 453 454 455
        case MN_BASE_SAMPLE: ;
            event_f sample = method_array[ns->net_id]->mn_sample_fn;
            assert(model_net_sampling_enabled() && sample != NULL);
            sub_msg = ((char*)m)+msg_offsets[ns->net_id];
            sample(ns->sub_state, b, sub_msg, lp);
            issue_sample_event(lp);
            break;
456
        case MN_BASE_PASS: ;
457
            sub_msg = ((char*)m)+msg_offsets[ns->net_id];
458 459 460 461 462 463 464 465 466 467 468 469 470 471
            ns->sub_type->event(ns->sub_state, b, sub_msg, lp);
            break;
        /* ... */
        default:
            assert(!"model_net_base event type not known");
            break;
    }
}

void model_net_base_event_rc(
        model_net_base_state * ns,
        tw_bf * b,
        model_net_wrap_msg * m,
        tw_lp * lp){
472
    assert(m->h.magic == model_net_base_magic);
473 474

    void * sub_msg;
475
    switch (m->h.event_type){
476 477 478 479 480 481
        case MN_BASE_NEW_MSG:
            handle_new_msg_rc(ns, b, m, lp);
            break;
        case MN_BASE_SCHED_NEXT:
            handle_sched_next_rc(ns, b, m, lp);
            break;
482 483 484 485 486 487
        case MN_BASE_SAMPLE: ;
            revent_f sample_rc = method_array[ns->net_id]->mn_sample_rc_fn;
            assert(model_net_sampling_enabled() && sample_rc != NULL);
            sub_msg = ((char*)m)+msg_offsets[ns->net_id];
            sample_rc(ns->sub_state, b, sub_msg, lp);
            break;
488
        case MN_BASE_PASS: ;
489
            sub_msg = ((char*)m)+msg_offsets[ns->net_id];
490 491 492 493 494 495 496 497 498 499 500 501
            ns->sub_type->revent(ns->sub_state, b, sub_msg, lp);
            break;
        /* ... */
        default:
            assert(!"model_net_base event type not known");
            break;
    }
}

void model_net_base_finalize(
        model_net_base_state * ns,
        tw_lp * lp){
502 503 504
    final_f sfini = method_array[ns->net_id]->mn_sample_fini_fn;
    if (sfini != NULL)
        sfini(ns->sub_state, lp);
505 506 507 508
    ns->sub_type->final(ns->sub_state, lp);
    free(ns->sub_state);
}

509
/// bitfields used:
510
/// c31 - we initiated a sched_next event
511 512 513 514 515
void handle_new_msg(
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp){
516
    // simply pass down to the scheduler
517
    model_net_request *r = &m->msg.m_base.req;
518 519
    // don't forget to set packet size, now that we're responsible for it!
    r->packet_size = ns->params->packet_size;
520
    r->msg_id = ns->msg_id++;
521 522
    void * m_data = m+1;
    void *remote = NULL, *local = NULL;
523
    if (r->remote_event_size > 0){
524 525
        remote = m_data;
        m_data = (char*)m_data + r->remote_event_size;
526 527
    }
    if (r->self_event_size > 0){
528
        local = m_data;
529
    }
530

531
    // set message-specific params
532 533
    int is_from_remote = m->msg.m_base.is_from_remote;
    model_net_sched *ss = is_from_remote ? ns->sched_recv : ns->sched_send;
534
    int *in_sched_loop = is_from_remote  ?
535 536 537
        &ns->in_sched_recv_loop : &ns->in_sched_send_loop;
    model_net_sched_add(r, &m->msg.m_base.sched_params, r->remote_event_size,
            remote, r->self_event_size, local, ss, &m->msg.m_base.rc, lp);
538

539
    if (*in_sched_loop == 0){
540 541
        b->c31 = 1;
        /* No need to issue an extra sched-next event if we're currently idle */
542
        *in_sched_loop = 1;
543 544 545 546 547
        /* NOTE: we can do this because the sched rc struct in the event is
         * *very* lightly used (there's harmless overlap in usage for the
         * priority scheduler) */
        handle_sched_next(ns, b, m, lp);
        assert(*in_sched_loop); // we shouldn't have fallen out of the loop
548 549
    }
}
550 551 552

void handle_new_msg_rc(
        model_net_base_state *ns,
553
        tw_bf *b,
554 555
        model_net_wrap_msg *m,
        tw_lp *lp){
556 557
    int is_from_remote = m->msg.m_base.is_from_remote;
    model_net_sched *ss = is_from_remote ? ns->sched_recv : ns->sched_send;
558
    int *in_sched_loop = is_from_remote  ?
559 560
        &ns->in_sched_recv_loop : &ns->in_sched_send_loop;

561 562
    if (b->c31) {
        handle_sched_next_rc(ns, b, m, lp);
563
        *in_sched_loop = 0;
564
    }
565
    model_net_sched_add_rc(ss, &m->msg.m_base.rc, lp);
566
}
567 568 569 570

/// bitfields used
/// c0 - scheduler loop is finished
void handle_sched_next(
571 572 573 574
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp){
575
    tw_stime poffset;
576 577 578 579 580
    int is_from_remote = m->msg.m_base.is_from_remote;
    model_net_sched * ss = is_from_remote ? ns->sched_recv : ns->sched_send;
    int *in_sched_loop = is_from_remote ?
        &ns->in_sched_recv_loop : &ns->in_sched_send_loop;
    int ret = model_net_sched_next(&poffset, ss, m+1, &m->msg.m_base.rc, lp);
581 582 583 584
    // we only need to know whether scheduling is finished or not - if not,
    // go to the 'next iteration' of the loop
    if (ret == -1){
        b->c0 = 1;
585
        *in_sched_loop = 0;
586
    }
587 588 589
    // Currently, only a subset of the network implementations use the
    // callback-based scheduling loop (model_net_method_idle_event).
    // For all others, we need to schedule the next packet
590
    // immediately
Jonathan Jenkins's avatar
Jonathan Jenkins committed
591
    else if (ns->net_id == SIMPLEP2P || ns->net_id == TORUS){
592
        tw_event *e = tw_event_new(lp->gid,
593
                poffset+codes_local_latency(lp), lp);
594
        model_net_wrap_msg *m_wrap = tw_event_data(e);
595
        msg_set_header(model_net_base_magic, MN_BASE_SCHED_NEXT, lp->gid,
596 597
                &m_wrap->h);
        m_wrap->msg.m_base.is_from_remote = is_from_remote;
598 599
        // no need to set m_base here
        tw_event_send(e);
600 601
    }
}
602

603 604 605 606 607
void handle_sched_next_rc(
        model_net_base_state * ns,
        tw_bf *b,
        model_net_wrap_msg * m,
        tw_lp * lp){
608 609 610 611
    int is_from_remote = m->msg.m_base.is_from_remote;
    model_net_sched * ss = is_from_remote ? ns->sched_recv : ns->sched_send;
    int *in_sched_loop = is_from_remote ?
        &ns->in_sched_recv_loop : &ns->in_sched_send_loop;
612

613
    model_net_sched_next_rc(ss, m+1, &m->msg.m_base.rc, lp);
614
    if (b->c0){
615
        *in_sched_loop = 1;
616
    }
Jonathan Jenkins's avatar
Jonathan Jenkins committed
617
    else if (ns->net_id == SIMPLEP2P || ns->net_id == TORUS){
618 619
        codes_local_latency_reverse(lp);
    }
620 621 622 623 624 625 626 627 628 629 630 631 632
}

/**** END IMPLEMENTATIONS ****/

tw_event * model_net_method_event_new(
        tw_lpid dest_gid,
        tw_stime offset_ts,
        tw_lp *sender,
        int net_id,
        void **msg_data,
        void **extra_data){
    tw_event *e = tw_event_new(dest_gid, offset_ts, sender);
    model_net_wrap_msg *m_wrap = tw_event_data(e);
633 634
    msg_set_header(model_net_base_magic, MN_BASE_PASS, sender->gid,
            &m_wrap->h);
635 636 637 638 639 640 641 642
    *msg_data = ((char*)m_wrap)+msg_offsets[net_id];
    // extra_data is optional
    if (extra_data != NULL){
        *extra_data = m_wrap + 1;
    }
    return e;
}

643 644 645 646 647 648 649 650 651 652 653 654
void model_net_method_send_msg_recv_event(
        tw_lpid final_dest_lp,
        tw_lpid dest_mn_lp,
        tw_lpid src_lp, // the "actual" source (as opposed to the model net lp)
        uint64_t msg_size,
        int is_pull,
        uint64_t pull_size,
        int remote_event_size,
        const mn_sched_params *sched_params,
        const char * category,
        int net_id,
        void * msg,
655
        tw_stime offset,
656
        tw_lp *sender){
657
    tw_event *e =
658
        tw_event_new(dest_mn_lp, offset+codes_local_latency(sender), sender);
659 660 661 662 663 664 665 666
    model_net_wrap_msg *m = tw_event_data(e);
    msg_set_header(model_net_base_magic, MN_BASE_NEW_MSG, sender->gid, &m->h);

    if (sched_params != NULL)
        m->msg.m_base.sched_params = *sched_params;
    else
        model_net_sched_set_default_params(&m->msg.m_base.sched_params);

667 668 669
    model_net_request *r = &m->msg.m_base.req;
    r->final_dest_lp = final_dest_lp;
    r->src_lp = src_lp;
670
    // for "recv" events, set the "dest" to this LP in the case of a pull event
671 672 673 674 675 676 677 678 679
    r->dest_mn_lp = sender->gid;
    r->pull_size = pull_size;
    r->msg_size = msg_size;
    // TODO: document why we're setting packet_size this way
    r->packet_size = msg_size;
    r->net_id = net_id;
    r->is_pull = is_pull;
    r->remote_event_size = remote_event_size;
    r->self_event_size = 0;
680 681
    m->msg.m_base.is_from_remote = 1;

682 683
    strncpy(r->category, category, CATEGORY_NAME_MAX-1);
    r->category[CATEGORY_NAME_MAX-1] = '\0';
684 685 686 687 688 689 690 691 692

    if (remote_event_size > 0){
        void * m_dat = model_net_method_get_edata(net_id, msg);
        memcpy(m+1, m_dat, remote_event_size);
    }

    tw_event_send(e);
}

Jonathan Jenkins's avatar
Jonathan Jenkins committed
693 694 695 696
void model_net_method_send_msg_recv_event_rc(tw_lp *sender){
    codes_local_latency_reverse(sender);
}

697 698 699

void model_net_method_idle_event(tw_stime offset_ts, int is_recv_queue,
        tw_lp * lp){
700 701
    tw_event *e = tw_event_new(lp->gid, offset_ts, lp);
    model_net_wrap_msg *m_wrap = tw_event_data(e);
702 703
    msg_set_header(model_net_base_magic, MN_BASE_SCHED_NEXT, lp->gid,
            &m_wrap->h);
704
    m_wrap->msg.m_base.is_from_remote = is_recv_queue;
705 706 707
    tw_event_send(e);
}

708 709 710 711 712 713 714 715 716 717 718 719
void * model_net_method_get_edata(int net_id, void *msg){
    return (char*)msg + sizeof(model_net_wrap_msg) - msg_offsets[net_id];
}

/*
 * Local variables:
 *  c-indent-level: 4
 *  c-basic-offset: 4
 * End:
 *
 * vim: ft=c ts=8 sts=4 sw=4 expandtab
 */