margo.c 19.3 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11

/*
 * (C) 2015 The University of Chicago
 * 
 * See COPYRIGHT in top-level directory.
 */

#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <abt.h>
12
#include <abt-snoozer.h>
13
#include <time.h>
Philip Carns's avatar
Philip Carns committed
14
#include <math.h>
15 16

#include "margo.h"
17
#include "margo-timer.h"
Philip Carns's avatar
Philip Carns committed
18
#include "utlist.h"
19

20 21
#define MERCURY_PROGRESS_TIMEOUT_UB 100 /* 100 milliseconds */

22 23
struct margo_instance
{
24
    /* provided by caller */
25 26
    hg_context_t *hg_context;
    hg_class_t *hg_class;
27 28 29
    ABT_pool handler_pool;
    ABT_pool progress_pool;

30
    /* internal to margo for this particular instance */
31 32
    ABT_thread hg_progress_tid;
    int hg_progress_shutdown_flag;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
33
    ABT_xstream progress_xstream;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
34 35 36
    int owns_progress_pool;
    ABT_xstream *rpc_xstreams;
    int num_handler_pool_threads;
37 38 39

    /* control logic for callers waiting on margo to be finalized */
    int finalize_flag;
40
    int waiters_in_progress_pool;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
41
    int refcount;
42 43 44
    ABT_mutex finalize_mutex;
    ABT_cond finalize_cond;

45 46 47 48 49 50 51 52 53
    int table_index;
};

struct margo_handler_mapping
{
    hg_class_t *class;
    margo_instance_id mid;
};

54 55 56 57 58 59 60
struct margo_cb_arg
{
    ABT_eventual *eventual;
    margo_instance_id mid;
    char in_pool;
};

61 62 63
#define MAX_HANDLER_MAPPING 8
static int handler_mapping_table_size = 0;
static struct margo_handler_mapping handler_mapping_table[MAX_HANDLER_MAPPING] = {0};
64

65
static void hg_progress_fn(void* foo);
66
static int margo_xstream_is_in_progress_pool(margo_instance_id mid);
67 68 69 70 71 72 73 74

struct handler_entry
{
    void* fn;
    hg_handle_t handle;
    struct handler_entry *next; 
};

Jonathan Jenkins's avatar
Jonathan Jenkins committed
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
margo_instance_id margo_init(int use_progress_thread, int rpc_thread_count,
    hg_context_t *hg_context)
{
    struct margo_instance *mid = MARGO_INSTANCE_NULL;
    ABT_xstream progress_xstream = ABT_XSTREAM_NULL;
    ABT_pool progress_pool = ABT_POOL_NULL;
    ABT_xstream *rpc_xstreams = NULL;
    ABT_xstream rpc_xstream = ABT_XSTREAM_NULL;
    ABT_pool rpc_pool = ABT_POOL_NULL;
    int ret;
    int i;

    if (use_progress_thread)
    {
        ret = ABT_snoozer_xstream_create(1, &progress_pool, &progress_xstream);
        if (ret != ABT_SUCCESS) goto err;
    }
    else
    {
        ret = ABT_xstream_self(&progress_xstream);
        if (ret != ABT_SUCCESS) goto err;
        ret = ABT_xstream_get_main_pools(progress_xstream, 1, &progress_pool);
        if (ret != ABT_SUCCESS) goto err;
    }

    if (rpc_thread_count > 0)
    {
        rpc_xstreams = malloc(rpc_thread_count * sizeof(*rpc_xstreams));
        if (rpc_xstreams == NULL) goto err;
        ret = ABT_snoozer_xstream_create(rpc_thread_count, &rpc_pool,
                rpc_xstreams);
        if (ret != ABT_SUCCESS) goto err;
    }
    else if (rpc_thread_count == 0)
    {
        ret = ABT_xstream_self(&rpc_xstream);
        if (ret != ABT_SUCCESS) goto err;
        ret = ABT_xstream_get_main_pools(rpc_xstream, 1, &rpc_pool);
        if (ret != ABT_SUCCESS) goto err;
    }
    else
    {
        rpc_pool = progress_pool;
    }

    mid = margo_init_pool(progress_pool, rpc_pool, hg_context);
    if (mid == MARGO_INSTANCE_NULL) goto err;

Jonathan Jenkins's avatar
Jonathan Jenkins committed
123 124 125
    mid->owns_progress_pool = use_progress_thread;
    mid->progress_xstream = progress_xstream;
    mid->num_handler_pool_threads = rpc_thread_count < 0 ? 0 : rpc_thread_count;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147
    mid->rpc_xstreams = rpc_xstreams;
    return mid;

err:
    if (use_progress_thread && progress_xstream != ABT_XSTREAM_NULL)
    {
        ABT_xstream_join(progress_xstream);
        ABT_xstream_free(&progress_xstream);
    }
    if (rpc_thread_count > 0 && rpc_xstreams != NULL)
    {
        for (i = 0; i < rpc_thread_count; i++)
        {
            ABT_xstream_join(rpc_xstreams[i]);
            ABT_xstream_free(&rpc_xstreams[i]);
        }
        free(rpc_xstreams);
    }
    return MARGO_INSTANCE_NULL;
}

margo_instance_id margo_init_pool(ABT_pool progress_pool, ABT_pool handler_pool,
Jonathan Jenkins's avatar
Jonathan Jenkins committed
148
    hg_context_t *hg_context)
149 150
{
    int ret;
151 152 153
    struct margo_instance *mid;

    if(handler_mapping_table_size >= MAX_HANDLER_MAPPING)
154
        return(MARGO_INSTANCE_NULL);
155 156 157

    mid = malloc(sizeof(*mid));
    if(!mid)
158
        return(MARGO_INSTANCE_NULL);
159
    memset(mid, 0, sizeof(*mid));
160

161 162 163
    ABT_mutex_create(&mid->finalize_mutex);
    ABT_cond_create(&mid->finalize_cond);

164 165
    mid->progress_pool = progress_pool;
    mid->handler_pool = handler_pool;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
166
    mid->hg_class = HG_Context_get_class(hg_context);
167
    mid->hg_context = hg_context;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
168
    mid->refcount = 1;
169

170 171 172 173 174 175 176 177
    ret = margo_timer_instance_init(mid);
    if(ret != 0)
    {
        fprintf(stderr, "Error: margo_timer_instance_init()\n");
        free(mid);
        return(MARGO_INSTANCE_NULL);
    }

178
    ret = ABT_thread_create(mid->progress_pool, hg_progress_fn, mid, 
179
        ABT_THREAD_ATTR_NULL, &mid->hg_progress_tid);
180 181 182
    if(ret != 0)
    {
        fprintf(stderr, "Error: ABT_thread_create()\n");
183
        free(mid);
184
        return(MARGO_INSTANCE_NULL);
185 186
    }

187 188 189 190 191 192
    handler_mapping_table[handler_mapping_table_size].mid = mid;
    handler_mapping_table[handler_mapping_table_size].class = mid->hg_class;
    mid->table_index = handler_mapping_table_size;
    handler_mapping_table_size++;

    return mid;
193 194
}

Jonathan Jenkins's avatar
Jonathan Jenkins committed
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
static void margo_cleanup(margo_instance_id mid)
{
    int i;

    margo_timer_instance_finalize(mid);

    ABT_mutex_free(&mid->finalize_mutex);
    ABT_cond_free(&mid->finalize_cond);

    if (mid->owns_progress_pool)
    {
        ABT_xstream_join(mid->progress_xstream);
        ABT_xstream_free(&mid->progress_xstream);
    }

    if (mid->num_handler_pool_threads > 0)
    {
        for (i = 0; i < mid->num_handler_pool_threads; i++)
        {
            ABT_xstream_join(mid->rpc_xstreams[i]);
            ABT_xstream_free(&mid->rpc_xstreams[i]);
        }
        free(mid->rpc_xstreams);
    }

    free(mid);
}

223
void margo_finalize(margo_instance_id mid)
224
{
225
    int i;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
226
    int do_cleanup;
227

228
    /* tell progress thread to wrap things up */
229
    mid->hg_progress_shutdown_flag = 1;
230 231

    /* wait for it to shutdown cleanly */
232 233
    ABT_thread_join(mid->hg_progress_tid);
    ABT_thread_free(&mid->hg_progress_tid);
234

235 236 237 238 239
    for(i=mid->table_index; i<(handler_mapping_table_size-1); i++)
    {
        handler_mapping_table[i] = handler_mapping_table[i+1];
    }
    handler_mapping_table_size--;
240

241 242 243 244
    ABT_mutex_lock(mid->finalize_mutex);
    mid->finalize_flag = 1;
    ABT_cond_broadcast(mid->finalize_cond);

Jonathan Jenkins's avatar
Jonathan Jenkins committed
245 246
    mid->refcount--;
    do_cleanup = mid->refcount == 0;
247

Jonathan Jenkins's avatar
Jonathan Jenkins committed
248 249 250 251 252 253 254
    ABT_mutex_unlock(mid->finalize_mutex);

    /* if there was noone waiting on the finalize at the time of the finalize
     * broadcast, then we're safe to clean up. Otherwise, let the finalizer do
     * it */
    if (do_cleanup)
        margo_cleanup(mid);
255 256 257 258 259 260 261

    return;
}

void margo_wait_for_finalize(margo_instance_id mid)
{
    int in_pool = 0;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
262
    int do_cleanup;
263 264 265 266

    /* Is this waiter in the same pool as the pool running the progress
     * thread?
     */
267
    if(margo_xstream_is_in_progress_pool(mid))
268 269 270 271
        in_pool = 1;

    ABT_mutex_lock(mid->finalize_mutex);

272
        mid->waiters_in_progress_pool += in_pool;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
273
        mid->refcount++;
274 275 276 277
            
        while(!mid->finalize_flag)
            ABT_cond_wait(mid->finalize_cond, mid->finalize_mutex);

Jonathan Jenkins's avatar
Jonathan Jenkins committed
278 279 280
        mid->refcount--;
        do_cleanup = mid->refcount == 0;

281
    ABT_mutex_unlock(mid->finalize_mutex);
Jonathan Jenkins's avatar
Jonathan Jenkins committed
282 283 284 285

    if (do_cleanup)
        margo_cleanup(mid);

286 287 288 289
    return;
}

/* dedicated thread function to drive Mercury progress */
290
static void hg_progress_fn(void* foo)
291 292 293
{
    int ret;
    unsigned int actual_count;
294
    struct margo_instance *mid = (struct margo_instance *)foo;
295
    size_t size;
296 297
    unsigned int hg_progress_timeout = MERCURY_PROGRESS_TIMEOUT_UB;
    double next_timer_exp;
298
    int trigger_happened;
299

300
    while(!mid->hg_progress_shutdown_flag)
301
    {
302
        trigger_happened = 0;
303
        do {
304
            ret = HG_Trigger(mid->hg_context, 0, 1, &actual_count);
305 306
            if(ret == HG_SUCCESS && actual_count > 0)
                trigger_happened = 1;
307
        } while((ret == HG_SUCCESS) && actual_count && !mid->hg_progress_shutdown_flag);
308

309 310
        if(trigger_happened)
            ABT_thread_yield();
311

312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327
        ABT_pool_get_total_size(mid->progress_pool, &size);
        /* Are there any other threads executing in this pool that are *not*
         * blocked on margo_wait_for_finalize()?  If so then, we can't
         * sleep here or else those threads will not get a chance to
         * execute.
         */
        if(size > mid->waiters_in_progress_pool)
        {
            //printf("DEBUG: Margo progress function running while other ULTs are eligible for execution (size: %d, waiters: %d.\n", size, mid->waiters_in_progress_pool);

            /* TODO: this is being executed more than is necessary (i.e.
             * in cases where there are other legitimate ULTs eligible
             * for execution that are not blocking on any events, Margo
             * or otherwise). Maybe we need an abt scheduling tweak here
             * to make sure that this ULT is the lowest priority in that
             * scenario.
328
             */
329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
            ret = HG_Progress(mid->hg_context, 0);
            if(ret == HG_SUCCESS)
            {
                /* Mercury completed something; loop around to trigger
                 * callbacks 
                 */
                ABT_thread_yield();
            }
            else if(ret == HG_TIMEOUT)
            {
                /* No completion; yield here to allow other ULTs to run */
            }
            else
            {
                /* TODO: error handling */
                fprintf(stderr, "WARNING: unexpected return code (%d) from HG_Progress()\n", ret);
            }
346 347 348 349 350
        }
        else
        {
            ret = margo_timer_get_next_expiration(mid, &next_timer_exp);
            if(ret == 0)
351
            {
352 353 354 355
                /* there is a queued timer, don't block long enough
                 * to keep this timer waiting
                 */
                if(next_timer_exp >= 0.0)
356
                {
357 358 359 360 361 362 363
                    next_timer_exp *= 1000; /* convert to milliseconds */
                    if(next_timer_exp < MERCURY_PROGRESS_TIMEOUT_UB)
                        hg_progress_timeout = (unsigned int)next_timer_exp;
                }
                else
                {
                    hg_progress_timeout = 0;
364
                }
365
            }
366 367 368 369 370 371
            ret = HG_Progress(mid->hg_context, hg_progress_timeout);
            if(ret != HG_SUCCESS && ret != HG_TIMEOUT)
            {
                /* TODO: error handling */
                fprintf(stderr, "WARNING: unexpected return code (%d) from HG_Progress()\n", ret);
            }
372
        }
373

374
        /* check for any expired timers */
375
        margo_check_timers(mid);
376 377
    }

378
    return;
379 380
}

381
ABT_pool* margo_get_handler_pool(margo_instance_id mid)
382
{
383
    return(&mid->handler_pool);
384 385
}

386 387 388 389 390 391 392 393 394 395 396
hg_context_t* margo_get_context(margo_instance_id mid)
{
    return(mid->hg_context);
}

hg_class_t* margo_get_class(margo_instance_id mid)
{
    return(mid->hg_class);
}


Jonathan Jenkins's avatar
Jonathan Jenkins committed
397
static hg_return_t margo_cb(const struct hg_cb_info *info)
398 399
{
    hg_return_t hret = info->ret;
400
    struct margo_cb_arg* arg = info->arg;
401 402

    /* propagate return code out through eventual */
403
    ABT_eventual_set(*(arg->eventual), &hret, sizeof(hret));
404
    
405
#if 0
406 407
    if(arg->in_pool)
        arg->mid->waiters_in_progress_pool--;
408
#endif
409

410 411 412
    return(HG_SUCCESS);
}

413 414 415
typedef struct
{
    hg_handle_t handle;
Shane Snyder's avatar
Shane Snyder committed
416
} margo_forward_timeout_cb_dat;
417 418 419

static void margo_forward_timeout_cb(void *arg)
{
Shane Snyder's avatar
Shane Snyder committed
420 421
    margo_forward_timeout_cb_dat *timeout_cb_dat =
        (margo_forward_timeout_cb_dat *)arg;
422 423

    /* cancel the Mercury op if the forward timed out */
424
    HG_Cancel(timeout_cb_dat->handle);
425 426 427
    return;
}

428 429 430 431 432 433
hg_return_t margo_forward_timed(
    margo_instance_id mid,
    hg_handle_t handle,
    void *in_struct,
    double timeout_ms)
{
Shane Snyder's avatar
Shane Snyder committed
434
    int ret;
435
    hg_return_t hret;
436 437
    ABT_eventual eventual;
    hg_return_t* waited_hret;
Shane Snyder's avatar
Shane Snyder committed
438 439
    margo_timer_t forward_timer;
    margo_forward_timeout_cb_dat timeout_cb_dat;
440
    struct margo_cb_arg arg;
441 442 443 444 445 446 447

    ret = ABT_eventual_create(sizeof(hret), &eventual);
    if(ret != 0)
    {
        return(HG_NOMEM_ERROR);        
    }

Shane Snyder's avatar
Shane Snyder committed
448 449
    /* set a timer object to expire when this forward times out */
    timeout_cb_dat.handle = handle;
450
    margo_timer_init(mid, &forward_timer, margo_forward_timeout_cb,
Shane Snyder's avatar
Shane Snyder committed
451
        &timeout_cb_dat, timeout_ms);
452

453 454
    arg.eventual = &eventual;
    arg.mid = mid;
455
#if 0
456 457 458 459 460 461 462
    if(margo_xstream_is_in_progress_pool(mid))
    {
        arg.in_pool = 1;
        mid->waiters_in_progress_pool++;
    }
    else
        arg.in_pool = 0;
463
#endif
464
    hret = HG_Forward(handle, margo_cb, &arg, in_struct);
465 466 467 468 469 470
    if(hret == 0)
    {
        ABT_eventual_wait(eventual, (void**)&waited_hret);
        hret = *waited_hret;
    }

471 472 473 474
    /* convert HG_CANCELED to HG_TIMEOUT to indicate op timed out */
    if(hret == HG_CANCELED)
        hret = HG_TIMEOUT;

475 476
    /* remove timer if it is still in place (i.e., not timed out) */
    if(hret != HG_TIMEOUT)
477
        margo_timer_destroy(mid, &forward_timer);
478 479 480 481

    ABT_eventual_free(&eventual);

    return(hret);
482 483 484
}


485
hg_return_t margo_forward(
486
    margo_instance_id mid,
487 488 489 490 491 492 493
    hg_handle_t handle,
    void *in_struct)
{
    hg_return_t hret = HG_TIMEOUT;
    ABT_eventual eventual;
    int ret;
    hg_return_t* waited_hret;
494
    struct margo_cb_arg arg;
495 496 497 498 499 500 501

    ret = ABT_eventual_create(sizeof(hret), &eventual);
    if(ret != 0)
    {
        return(HG_NOMEM_ERROR);        
    }

502 503
    arg.eventual = &eventual;
    arg.mid = mid;
504
#if 0
505 506 507 508 509 510 511
    if(margo_xstream_is_in_progress_pool(mid))
    {
        arg.in_pool = 1;
        mid->waiters_in_progress_pool++;
    }
    else
        arg.in_pool = 0;
512
#endif
513
    hret = HG_Forward(handle, margo_cb, &arg, in_struct);
Jonathan Jenkins's avatar
Jonathan Jenkins committed
514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533
    if(hret == 0)
    {
        ABT_eventual_wait(eventual, (void**)&waited_hret);
        hret = *waited_hret;
    }

    ABT_eventual_free(&eventual);

    return(hret);
}

hg_return_t margo_respond(
    margo_instance_id mid,
    hg_handle_t handle,
    void *out_struct)
{
    hg_return_t hret = HG_TIMEOUT;
    ABT_eventual eventual;
    int ret;
    hg_return_t* waited_hret;
534
    struct margo_cb_arg arg;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
535 536 537 538 539 540 541

    ret = ABT_eventual_create(sizeof(hret), &eventual);
    if(ret != 0)
    {
        return(HG_NOMEM_ERROR);
    }

542 543
    arg.eventual = &eventual;
    arg.mid = mid;
544
#if 0
545 546 547 548 549 550 551
    if(margo_xstream_is_in_progress_pool(mid))
    {
        arg.in_pool = 1;
        mid->waiters_in_progress_pool++;
    }
    else
        arg.in_pool = 0;
552
#endif
553
    hret = HG_Respond(handle, margo_cb, &arg, out_struct);
554 555 556 557 558 559 560 561 562 563 564
    if(hret == 0)
    {
        ABT_eventual_wait(eventual, (void**)&waited_hret);
        hret = *waited_hret;
    }

    ABT_eventual_free(&eventual);

    return(hret);
}

565

566
static hg_return_t margo_bulk_transfer_cb(const struct hg_cb_info *info)
567
{
568
    hg_return_t hret = info->ret;
569
    struct margo_cb_arg* arg = info->arg;
570 571

    /* propagate return code out through eventual */
572
    ABT_eventual_set(*(arg->eventual), &hret, sizeof(hret));
573
    
574 575 576
    if(arg->in_pool)
        arg->mid->waiters_in_progress_pool--;

577 578 579
    return(HG_SUCCESS);
}

Philip Carns's avatar
Philip Carns committed
580 581
struct lookup_cb_evt
{
582 583
    hg_return_t nret;
    hg_addr_t addr;
Philip Carns's avatar
Philip Carns committed
584 585
};

586
static hg_return_t margo_addr_lookup_cb(const struct hg_cb_info *info)
Philip Carns's avatar
Philip Carns committed
587 588
{
    struct lookup_cb_evt evt;
589 590
    evt.nret = info->ret;
    evt.addr = info->info.lookup.addr;
591
    struct margo_cb_arg* arg = info->arg;
Philip Carns's avatar
Philip Carns committed
592 593

    /* propagate return code out through eventual */
594 595
    ABT_eventual_set(*(arg->eventual), &evt, sizeof(evt));

596
#if 0
597 598
    if(arg->in_pool)
        arg->mid->waiters_in_progress_pool--;
599
#endif
Philip Carns's avatar
Philip Carns committed
600
    
601
    return(HG_SUCCESS);
Philip Carns's avatar
Philip Carns committed
602 603 604
}


605
hg_return_t margo_addr_lookup(
606
    margo_instance_id mid,
Philip Carns's avatar
Philip Carns committed
607
    const char   *name,
608
    hg_addr_t    *addr)
609
{
610
    hg_return_t nret;
Philip Carns's avatar
Philip Carns committed
611
    struct lookup_cb_evt *evt;
612 613
    ABT_eventual eventual;
    int ret;
614
    struct margo_cb_arg arg;
615

Philip Carns's avatar
Philip Carns committed
616
    ret = ABT_eventual_create(sizeof(*evt), &eventual);
617 618 619 620 621
    if(ret != 0)
    {
        return(HG_NOMEM_ERROR);        
    }

622 623
    arg.eventual = &eventual;
    arg.mid = mid;
624
#if 0
625 626 627 628 629 630 631
    if(margo_xstream_is_in_progress_pool(mid))
    {
        arg.in_pool = 1;
        mid->waiters_in_progress_pool++;
    }
    else
        arg.in_pool = 0;
632
#endif
Jonathan Jenkins's avatar
Jonathan Jenkins committed
633
    nret = HG_Addr_lookup(mid->hg_context, margo_addr_lookup_cb,
634
        &arg, name, HG_OP_ID_IGNORE);
635 636
    if(nret == 0)
    {
Philip Carns's avatar
Philip Carns committed
637 638 639
        ABT_eventual_wait(eventual, (void**)&evt);
        *addr = evt->addr;
        nret = evt->nret;
640 641 642 643 644 645 646
    }

    ABT_eventual_free(&eventual);

    return(nret);
}

647
hg_return_t margo_bulk_transfer(
648
    margo_instance_id mid,
649
    hg_bulk_op_t op,
650
    hg_addr_t origin_addr,
651 652 653 654 655 656 657 658 659 660
    hg_bulk_t origin_handle,
    size_t origin_offset,
    hg_bulk_t local_handle,
    size_t local_offset,
    size_t size)
{
    hg_return_t hret = HG_TIMEOUT;
    hg_return_t *waited_hret;
    ABT_eventual eventual;
    int ret;
661
    struct margo_cb_arg arg;
662 663 664 665 666 667 668

    ret = ABT_eventual_create(sizeof(hret), &eventual);
    if(ret != 0)
    {
        return(HG_NOMEM_ERROR);        
    }

669 670 671 672 673 674 675 676 677
    arg.eventual = &eventual;
    arg.mid = mid;
    if(margo_xstream_is_in_progress_pool(mid))
    {
        arg.in_pool = 1;
        mid->waiters_in_progress_pool++;
    }
    else
        arg.in_pool = 0;
Jonathan Jenkins's avatar
Jonathan Jenkins committed
678
    hret = HG_Bulk_transfer(mid->hg_context, margo_bulk_transfer_cb,
679
        &arg, op, origin_addr, origin_handle, origin_offset, local_handle,
Jonathan Jenkins's avatar
Jonathan Jenkins committed
680
        local_offset, size, HG_OP_ID_IGNORE);
681 682 683 684 685 686 687 688 689 690 691
    if(hret == 0)
    {
        ABT_eventual_wait(eventual, (void**)&waited_hret);
        hret = *waited_hret;
    }

    ABT_eventual_free(&eventual);

    return(hret);
}

692 693
typedef struct
{
694
    margo_instance_id mid;
695 696
    ABT_mutex mutex;
    ABT_cond cond;
Shane Snyder's avatar
Shane Snyder committed
697 698
    char is_asleep;
    char in_pool;
699 700 701 702 703 704 705
} margo_thread_sleep_cb_dat;

static void margo_thread_sleep_cb(void *arg)
{
    margo_thread_sleep_cb_dat *sleep_cb_dat =
        (margo_thread_sleep_cb_dat *)arg;

706
    /* decrement number of waiting threads */
707
    sleep_cb_dat->mid->waiters_in_progress_pool -=
Shane Snyder's avatar
Shane Snyder committed
708
        sleep_cb_dat->in_pool;
709

710 711
    /* wake up the sleeping thread */
    ABT_mutex_lock(sleep_cb_dat->mutex);
712
    sleep_cb_dat->is_asleep = 0;
713 714 715 716 717 718 719
    ABT_cond_signal(sleep_cb_dat->cond);
    ABT_mutex_unlock(sleep_cb_dat->mutex);

    return;
}

void margo_thread_sleep(
720
    margo_instance_id mid,
721 722
    double timeout_ms)
{
723
    int in_pool = 0;
724 725 726
    margo_timer_t sleep_timer;
    margo_thread_sleep_cb_dat sleep_cb_dat;

Shane Snyder's avatar
Shane Snyder committed
727 728 729
    if(margo_xstream_is_in_progress_pool(mid))
        in_pool = 1;

730
    /* set data needed for sleep callback */
731
    sleep_cb_dat.mid = mid;
732 733
    ABT_mutex_create(&(sleep_cb_dat.mutex));
    ABT_cond_create(&(sleep_cb_dat.cond));
734
    sleep_cb_dat.is_asleep = 1;
Shane Snyder's avatar
Shane Snyder committed
735
    sleep_cb_dat.in_pool = in_pool;
736 737

    /* initialize the sleep timer */
738
    margo_timer_init(mid, &sleep_timer, margo_thread_sleep_cb,
739 740
        &sleep_cb_dat, timeout_ms);

741
    /* increment number of waiting threads */
742
    mid->waiters_in_progress_pool += in_pool;
743

744 745
    /* yield thread for specified timeout */
    ABT_mutex_lock(sleep_cb_dat.mutex);
746 747
    while(sleep_cb_dat.is_asleep)
        ABT_cond_wait(sleep_cb_dat.cond, sleep_cb_dat.mutex);
748 749 750 751 752
    ABT_mutex_unlock(sleep_cb_dat.mutex);

    return;
}

753
margo_instance_id margo_hg_class_to_instance(hg_class_t *cl)
754 755 756 757 758
{
    int i;

    for(i=0; i<handler_mapping_table_size; i++)
    {
759
        if(handler_mapping_table[i].class == cl)
760 761 762 763
            return(handler_mapping_table[i].mid);
    }
    return(NULL);
}
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781

/* returns 1 if current xstream is in the progress pool, 0 if not */
static int margo_xstream_is_in_progress_pool(margo_instance_id mid)
{
    int ret;
    ABT_xstream xstream;
    ABT_pool pool;

    ret = ABT_xstream_self(&xstream);
    assert(ret == ABT_SUCCESS);
    ret = ABT_xstream_get_main_pools(xstream, 1, &pool);
    assert(ret == ABT_SUCCESS);

    if(pool == mid->progress_pool)
        return(1);
    else
        return(0);
}