examples/performance-thread/pthread_shim/pthread_shim.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2015 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <sys/types.h>
  37 #include <errno.h>
  38 #define __USE_GNU
  39 #include <sched.h>
  40 #include <dlfcn.h>
  41
  42 #include <rte_config.h>
  43 #include <rte_log.h>
  44
  45 #include "lthread_api.h"
  46 #include "pthread_shim.h"
  47
  48 #define RTE_LOGTYPE_PTHREAD_SHIM RTE_LOGTYPE_USER3
  49
  50 #define POSIX_ERRNO(x)  (x)
  51
  52 /*
  53  * this flag determines at run time if we override pthread
  54  * calls and map then to equivalent lthread calls
  55  * or of we call the standard pthread function
  56  */
  57 static __thread int override;
  58
  59
  60 /*
  61  * this structures contains function pointers that will be
  62  * initialised to the loaded address of the real
  63  * pthread library API functions
  64  */
  65 struct pthread_lib_funcs {
  66 int (*f_pthread_barrier_destroy)
  67         (pthread_barrier_t *);
  68 int (*f_pthread_barrier_init)
  69         (pthread_barrier_t *, const pthread_barrierattr_t *, unsigned);
  70 int (*f_pthread_barrier_wait)
  71         (pthread_barrier_t *);
  72 int (*f_pthread_cond_broadcast)
  73         (pthread_cond_t *);
  74 int (*f_pthread_cond_destroy)
  75         (pthread_cond_t *);
  76 int (*f_pthread_cond_init)
  77         (pthread_cond_t *, const pthread_condattr_t *);
  78 int (*f_pthread_cond_signal)
  79         (pthread_cond_t *);
  80 int (*f_pthread_cond_timedwait)
  81         (pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
  82 int (*f_pthread_cond_wait)
  83         (pthread_cond_t *, pthread_mutex_t *);
  84 int (*f_pthread_create)
  85         (pthread_t *, const pthread_attr_t *, void *(*)(void *), void *);
  86 int (*f_pthread_detach)
  87         (pthread_t);
  88 int (*f_pthread_equal)
  89         (pthread_t, pthread_t);
  90 void (*f_pthread_exit)
  91         (void *);
  92 void * (*f_pthread_getspecific)
  93         (pthread_key_t);
  94 int (*f_pthread_getcpuclockid)
  95         (pthread_t, clockid_t *);
  96 int (*f_pthread_join)
  97         (pthread_t, void **);
  98 int (*f_pthread_key_create)
  99         (pthread_key_t *, void (*) (void *));
 100 int (*f_pthread_key_delete)
 101         (pthread_key_t);
 102 int (*f_pthread_mutex_destroy)
 103         (pthread_mutex_t *__mutex);
 104 int (*f_pthread_mutex_init)
 105         (pthread_mutex_t *__mutex, const pthread_mutexattr_t *);
 106 int (*f_pthread_mutex_lock)
 107         (pthread_mutex_t *__mutex);
 108 int (*f_pthread_mutex_trylock)
 109         (pthread_mutex_t *__mutex);
 110 int (*f_pthread_mutex_timedlock)
 111         (pthread_mutex_t *__mutex, const struct timespec *);
 112 int (*f_pthread_mutex_unlock)
 113         (pthread_mutex_t *__mutex);
 114 int (*f_pthread_once)
 115         (pthread_once_t *, void (*) (void));
 116 int (*f_pthread_rwlock_destroy)
 117         (pthread_rwlock_t *__rwlock);
 118 int (*f_pthread_rwlock_init)
 119         (pthread_rwlock_t *__rwlock, const pthread_rwlockattr_t *);
 120 int (*f_pthread_rwlock_rdlock)
 121         (pthread_rwlock_t *__rwlock);
 122 int (*f_pthread_rwlock_timedrdlock)
 123         (pthread_rwlock_t *__rwlock, const struct timespec *);
 124 int (*f_pthread_rwlock_timedwrlock)
 125         (pthread_rwlock_t *__rwlock, const struct timespec *);
 126 int (*f_pthread_rwlock_tryrdlock)
 127         (pthread_rwlock_t *__rwlock);
 128 int (*f_pthread_rwlock_trywrlock)
 129         (pthread_rwlock_t *__rwlock);
 130 int (*f_pthread_rwlock_unlock)
 131         (pthread_rwlock_t *__rwlock);
 132 int (*f_pthread_rwlock_wrlock)
 133         (pthread_rwlock_t *__rwlock);
 134 pthread_t (*f_pthread_self)
 135         (void);
 136 int (*f_pthread_setspecific)
 137         (pthread_key_t, const void *);
 138 int (*f_pthread_spin_init)
 139         (pthread_spinlock_t *__spin, int);
 140 int (*f_pthread_spin_destroy)
 141         (pthread_spinlock_t *__spin);
 142 int (*f_pthread_spin_lock)
 143         (pthread_spinlock_t *__spin);
 144 int (*f_pthread_spin_trylock)
 145         (pthread_spinlock_t *__spin);
 146 int (*f_pthread_spin_unlock)
 147         (pthread_spinlock_t *__spin);
 148 int (*f_pthread_cancel)
 149         (pthread_t);
 150 int (*f_pthread_setcancelstate)
 151         (int, int *);
 152 int (*f_pthread_setcanceltype)
 153         (int, int *);
 154 void (*f_pthread_testcancel)
 155         (void);
 156 int (*f_pthread_getschedparam)
 157         (pthread_t pthread, int *, struct sched_param *);
 158 int (*f_pthread_setschedparam)
 159         (pthread_t, int, const struct sched_param *);
 160 int (*f_pthread_yield)
 161         (void);
 162 int (*f_pthread_setaffinity_np)
 163         (pthread_t thread, size_t cpusetsize, const cpu_set_t *cpuset);
 164 int (*f_nanosleep)
 165         (const struct timespec *req, struct timespec *rem);
 166 } _sys_pthread_funcs = {
 167         .f_pthread_barrier_destroy = NULL,
 168 };
 169
 170
 171 /*
 172  * this macro obtains the loaded address of a library function
 173  * and saves it.
 174  */
 175 static void *__libc_dl_handle = RTLD_NEXT;
 176
 177 #define get_addr_of_loaded_symbol(name) do {                            \
 178         char *error_str;                                                \
 179         _sys_pthread_funcs.f_##name = dlsym(__libc_dl_handle, (#name)); \
 180         error_str = dlerror();                                          \
 181         if (error_str != NULL) {                                        \
 182                 fprintf(stderr, "%s\n", error_str);                     \
 183         }                                                               \
 184 } while (0)
 185
 186
 187 /*
 188  * The constructor function initialises the
 189  * function pointers for pthread library functions
 190  */
 191 void
 192 pthread_intercept_ctor(void)__attribute__((constructor));
 193 void
 194 pthread_intercept_ctor(void)
 195 {
 196         override = 0;
 197         /*
 198          * Get the original functions
 199          */
 200         get_addr_of_loaded_symbol(pthread_barrier_destroy);
 201         get_addr_of_loaded_symbol(pthread_barrier_init);
 202         get_addr_of_loaded_symbol(pthread_barrier_wait);
 203         get_addr_of_loaded_symbol(pthread_cond_broadcast);
 204         get_addr_of_loaded_symbol(pthread_cond_destroy);
 205         get_addr_of_loaded_symbol(pthread_cond_init);
 206         get_addr_of_loaded_symbol(pthread_cond_signal);
 207         get_addr_of_loaded_symbol(pthread_cond_timedwait);
 208         get_addr_of_loaded_symbol(pthread_cond_wait);
 209         get_addr_of_loaded_symbol(pthread_create);
 210         get_addr_of_loaded_symbol(pthread_detach);
 211         get_addr_of_loaded_symbol(pthread_equal);
 212         get_addr_of_loaded_symbol(pthread_exit);
 213         get_addr_of_loaded_symbol(pthread_getspecific);
 214         get_addr_of_loaded_symbol(pthread_getcpuclockid);
 215         get_addr_of_loaded_symbol(pthread_join);
 216         get_addr_of_loaded_symbol(pthread_key_create);
 217         get_addr_of_loaded_symbol(pthread_key_delete);
 218         get_addr_of_loaded_symbol(pthread_mutex_destroy);
 219         get_addr_of_loaded_symbol(pthread_mutex_init);
 220         get_addr_of_loaded_symbol(pthread_mutex_lock);
 221         get_addr_of_loaded_symbol(pthread_mutex_trylock);
 222         get_addr_of_loaded_symbol(pthread_mutex_timedlock);
 223         get_addr_of_loaded_symbol(pthread_mutex_unlock);
 224         get_addr_of_loaded_symbol(pthread_once);
 225         get_addr_of_loaded_symbol(pthread_rwlock_destroy);
 226         get_addr_of_loaded_symbol(pthread_rwlock_init);
 227         get_addr_of_loaded_symbol(pthread_rwlock_rdlock);
 228         get_addr_of_loaded_symbol(pthread_rwlock_timedrdlock);
 229         get_addr_of_loaded_symbol(pthread_rwlock_timedwrlock);
 230         get_addr_of_loaded_symbol(pthread_rwlock_tryrdlock);
 231         get_addr_of_loaded_symbol(pthread_rwlock_trywrlock);
 232         get_addr_of_loaded_symbol(pthread_rwlock_unlock);
 233         get_addr_of_loaded_symbol(pthread_rwlock_wrlock);
 234         get_addr_of_loaded_symbol(pthread_self);
 235         get_addr_of_loaded_symbol(pthread_setspecific);
 236         get_addr_of_loaded_symbol(pthread_spin_init);
 237         get_addr_of_loaded_symbol(pthread_spin_destroy);
 238         get_addr_of_loaded_symbol(pthread_spin_lock);
 239         get_addr_of_loaded_symbol(pthread_spin_trylock);
 240         get_addr_of_loaded_symbol(pthread_spin_unlock);
 241         get_addr_of_loaded_symbol(pthread_cancel);
 242         get_addr_of_loaded_symbol(pthread_setcancelstate);
 243         get_addr_of_loaded_symbol(pthread_setcanceltype);
 244         get_addr_of_loaded_symbol(pthread_testcancel);
 245         get_addr_of_loaded_symbol(pthread_getschedparam);
 246         get_addr_of_loaded_symbol(pthread_setschedparam);
 247         get_addr_of_loaded_symbol(pthread_yield);
 248         get_addr_of_loaded_symbol(pthread_setaffinity_np);
 249         get_addr_of_loaded_symbol(nanosleep);
 250 }
 251
 252
 253 /*
 254  * Enable/Disable pthread override
 255  * state
 256  *  0 disable
 257  *  1 enable
 258  */
 259 void pthread_override_set(int state)
 260 {
 261         override = state;
 262 }
 263
 264
 265 /*
 266  * Return pthread override state
 267  * return
 268  *  0 disable
 269  *  1 enable
 270  */
 271 int pthread_override_get(void)
 272 {
 273         return override;
 274 }
 275
 276 /*
 277  * This macro is used to catch and log
 278  * invocation of stubs for unimplemented pthread
 279  * API functions.
 280  */
 281 #define NOT_IMPLEMENTED do {                            \
 282         if (override) {                                 \
 283                 RTE_LOG(WARNING,                        \
 284                         PTHREAD_SHIM,                   \
 285                         "WARNING %s NOT IMPLEMENTED\n", \
 286                         __func__);                      \
 287         }                                               \
 288 } while (0)
 289
 290 /*
 291  * pthread API override functions follow
 292  * Note in this example code only a subset of functions are
 293  * implemented.
 294  *
 295  * The stub functions provided will issue a warning log
 296  * message if an unimplemented function is invoked
 297  *
 298  */
 299
 300 int pthread_barrier_destroy(pthread_barrier_t *a)
 301 {
 302         NOT_IMPLEMENTED;
 303         return _sys_pthread_funcs.f_pthread_barrier_destroy(a);
 304 }
 305
 306 int
 307 pthread_barrier_init(pthread_barrier_t *a,
 308                      const pthread_barrierattr_t *b, unsigned c)
 309 {
 310         NOT_IMPLEMENTED;
 311         return _sys_pthread_funcs.f_pthread_barrier_init(a, b, c);
 312 }
 313
 314 int pthread_barrier_wait(pthread_barrier_t *a)
 315 {
 316         NOT_IMPLEMENTED;
 317         return _sys_pthread_funcs.f_pthread_barrier_wait(a);
 318 }
 319
 320 int pthread_cond_broadcast(pthread_cond_t *cond)
 321 {
 322         if (override) {
 323
 324                 lthread_cond_broadcast(*(struct lthread_cond **)cond);
 325                 return 0;
 326         }
 327         return _sys_pthread_funcs.f_pthread_cond_broadcast(cond);
 328 }
 329
 330 int pthread_cond_destroy(pthread_cond_t *cond)
 331 {
 332         if (override)
 333                 return -lthread_cond_destroy(*(struct lthread_cond **)cond);
 334         return _sys_pthread_funcs.f_pthread_cond_destroy(cond);
 335 }
 336
 337 int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
 338 {
 339         if (override)
 340                 return -lthread_cond_init(NULL,
 341                                 (struct lthread_cond **)cond,
 342                                 (const struct lthread_condattr *) attr);
 343         return _sys_pthread_funcs.f_pthread_cond_init(cond, attr);
 344 }
 345
 346 int pthread_cond_signal(pthread_cond_t *cond)
 347 {
 348         if (override) {
 349                 lthread_cond_signal(*(struct lthread_cond **)cond);
 350                 return 0;
 351         }
 352         return _sys_pthread_funcs.f_pthread_cond_signal(cond);
 353 }
 354
 355 int
 356 pthread_cond_timedwait(pthread_cond_t *__restrict cond,
 357                        pthread_mutex_t *__restrict mutex,
 358                        const struct timespec *__restrict time)
 359 {
 360         NOT_IMPLEMENTED;
 361         return _sys_pthread_funcs.f_pthread_cond_timedwait(cond, mutex, time);
 362 }
 363
 364 int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 365 {
 366         if (override) {
 367                 pthread_mutex_unlock(mutex);
 368                 int rv = lthread_cond_wait(*(struct lthread_cond **)cond, 0);
 369
 370                 pthread_mutex_lock(mutex);
 371                 return rv;
 372         }
 373         return _sys_pthread_funcs.f_pthread_cond_wait(cond, mutex);
 374 }
 375
 376 int
 377 pthread_create(pthread_t *__restrict tid,
 378                 const pthread_attr_t *__restrict attr,
 379                 void *(func) (void *),
 380                void *__restrict arg)
 381 {
 382         if (override) {
 383                 int lcore = -1;
 384
 385                 if (attr != NULL) {
 386                         /* determine CPU being requested */
 387                         cpu_set_t cpuset;
 388
 389                         CPU_ZERO(&cpuset);
 390                         pthread_attr_getaffinity_np(attr,
 391                                                 sizeof(cpu_set_t),
 392                                                 &cpuset);
 393
 394                         if (CPU_COUNT(&cpuset) != 1)
 395                                 return POSIX_ERRNO(EINVAL);
 396
 397                         for (lcore = 0; lcore < LTHREAD_MAX_LCORES; lcore++) {
 398                                 if (!CPU_ISSET(lcore, &cpuset))
 399                                         continue;
 400                                 break;
 401                         }
 402                 }
 403                 return lthread_create((struct lthread **)tid, lcore,
 404                                       (void (*)(void *))func, arg);
 405         }
 406         return _sys_pthread_funcs.f_pthread_create(tid, attr, func, arg);
 407 }
 408
 409 int pthread_detach(pthread_t tid)
 410 {
 411         if (override) {
 412                 struct lthread *lt = (struct lthread *)tid;
 413
 414                 if (lt == lthread_current())
 415                         lthread_detach();
 416                         return 0;
 417                 NOT_IMPLEMENTED;
 418         }
 419         return _sys_pthread_funcs.f_pthread_detach(tid);
 420 }
 421
 422 int pthread_equal(pthread_t a, pthread_t b)
 423 {
 424         NOT_IMPLEMENTED;
 425         return _sys_pthread_funcs.f_pthread_equal(a, b);
 426 }
 427
 428 void pthread_exit_override(void *v)
 429 {
 430         if (override) {
 431                 lthread_exit(v);
 432                 return;
 433         }
 434         _sys_pthread_funcs.f_pthread_exit(v);
 435 }
 436
 437 void
 438 *pthread_getspecific(pthread_key_t key)
 439 {
 440         if (override)
 441                 return lthread_getspecific((unsigned int) key);
 442         return _sys_pthread_funcs.f_pthread_getspecific(key);
 443 }
 444
 445 int pthread_getcpuclockid(pthread_t a, clockid_t *b)
 446 {
 447         NOT_IMPLEMENTED;
 448         return _sys_pthread_funcs.f_pthread_getcpuclockid(a, b);
 449 }
 450
 451 int pthread_join(pthread_t tid, void **val)
 452 {
 453         if (override)
 454                 return lthread_join((struct lthread *)tid, val);
 455         return _sys_pthread_funcs.f_pthread_join(tid, val);
 456 }
 457
 458 int pthread_key_create(pthread_key_t *keyptr, void (*dtor) (void *))
 459 {
 460         if (override)
 461                 return lthread_key_create((unsigned int *)keyptr, dtor);
 462         return _sys_pthread_funcs.f_pthread_key_create(keyptr, dtor);
 463 }
 464
 465 int pthread_key_delete(pthread_key_t key)
 466 {
 467         if (override) {
 468                 lthread_key_delete((unsigned int) key);
 469                 return 0;
 470         }
 471         return _sys_pthread_funcs.f_pthread_key_delete(key);
 472 }
 473
 474
 475 int
 476 pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
 477 {
 478         if (override)
 479                 return lthread_mutex_init(NULL,
 480                                 (struct lthread_mutex **)mutex,
 481                                 (const struct lthread_mutexattr *)attr);
 482         return _sys_pthread_funcs.f_pthread_mutex_init(mutex, attr);
 483 }
 484
 485 int pthread_mutex_lock(pthread_mutex_t *mutex)
 486 {
 487         if (override)
 488                 return lthread_mutex_lock(*(struct lthread_mutex **)mutex);
 489         return _sys_pthread_funcs.f_pthread_mutex_lock(mutex);
 490 }
 491
 492 int pthread_mutex_trylock(pthread_mutex_t *mutex)
 493 {
 494         if (override)
 495                 return lthread_mutex_trylock(*(struct lthread_mutex **)mutex);
 496         return _sys_pthread_funcs.f_pthread_mutex_trylock(mutex);
 497 }
 498
 499 int pthread_mutex_timedlock(pthread_mutex_t *mutex, const struct timespec *b)
 500 {
 501         NOT_IMPLEMENTED;
 502         return _sys_pthread_funcs.f_pthread_mutex_timedlock(mutex, b);
 503 }
 504
 505 int pthread_mutex_unlock(pthread_mutex_t *mutex)
 506 {
 507         if (override)
 508                 return lthread_mutex_unlock(*(struct lthread_mutex **)mutex);
 509         return _sys_pthread_funcs.f_pthread_mutex_unlock(mutex);
 510 }
 511
 512 int pthread_once(pthread_once_t *a, void (b) (void))
 513 {
 514         NOT_IMPLEMENTED;
 515         return _sys_pthread_funcs.f_pthread_once(a, b);
 516 }
 517
 518 int pthread_rwlock_destroy(pthread_rwlock_t *a)
 519 {
 520         NOT_IMPLEMENTED;
 521         return _sys_pthread_funcs.f_pthread_rwlock_destroy(a);
 522 }
 523
 524 int pthread_rwlock_init(pthread_rwlock_t *a, const pthread_rwlockattr_t *b)
 525 {
 526         NOT_IMPLEMENTED;
 527         return _sys_pthread_funcs.f_pthread_rwlock_init(a, b);
 528 }
 529
 530 int pthread_rwlock_rdlock(pthread_rwlock_t *a)
 531 {
 532         NOT_IMPLEMENTED;
 533         return _sys_pthread_funcs.f_pthread_rwlock_rdlock(a);
 534 }
 535
 536 int pthread_rwlock_timedrdlock(pthread_rwlock_t *a, const struct timespec *b)
 537 {
 538         NOT_IMPLEMENTED;
 539         return _sys_pthread_funcs.f_pthread_rwlock_timedrdlock(a, b);
 540 }
 541
 542 int pthread_rwlock_timedwrlock(pthread_rwlock_t *a, const struct timespec *b)
 543 {
 544         NOT_IMPLEMENTED;
 545         return _sys_pthread_funcs.f_pthread_rwlock_timedwrlock(a, b);
 546 }
 547
 548 int pthread_rwlock_tryrdlock(pthread_rwlock_t *a)
 549 {
 550         NOT_IMPLEMENTED;
 551         return _sys_pthread_funcs.f_pthread_rwlock_tryrdlock(a);
 552 }
 553
 554 int pthread_rwlock_trywrlock(pthread_rwlock_t *a)
 555 {
 556         NOT_IMPLEMENTED;
 557         return _sys_pthread_funcs.f_pthread_rwlock_trywrlock(a);
 558 }
 559
 560 int pthread_rwlock_unlock(pthread_rwlock_t *a)
 561 {
 562         NOT_IMPLEMENTED;
 563         return _sys_pthread_funcs.f_pthread_rwlock_unlock(a);
 564 }
 565
 566 int pthread_rwlock_wrlock(pthread_rwlock_t *a)
 567 {
 568         NOT_IMPLEMENTED;
 569         return _sys_pthread_funcs.f_pthread_rwlock_wrlock(a);
 570 }
 571
 572 int pthread_yield(void)
 573 {
 574         if (override) {
 575                 lthread_yield();
 576                 return 0;
 577         }
 578         return _sys_pthread_funcs.f_pthread_yield();
 579
 580 }
 581
 582 pthread_t pthread_self(void)
 583 {
 584         if (override)
 585                 return (pthread_t) lthread_current();
 586         return _sys_pthread_funcs.f_pthread_self();
 587 }
 588
 589 int pthread_setspecific(pthread_key_t key, const void *data)
 590 {
 591         if (override) {
 592                 int rv =  lthread_setspecific((unsigned int)key, data);
 593                 return rv;
 594         }
 595         return _sys_pthread_funcs.f_pthread_setspecific(key, data);
 596 }
 597
 598 int pthread_spin_init(pthread_spinlock_t *a, int b)
 599 {
 600         NOT_IMPLEMENTED;
 601         return _sys_pthread_funcs.f_pthread_spin_init(a, b);
 602 }
 603
 604 int pthread_spin_destroy(pthread_spinlock_t *a)
 605 {
 606         NOT_IMPLEMENTED;
 607         return _sys_pthread_funcs.f_pthread_spin_destroy(a);
 608 }
 609
 610 int pthread_spin_lock(pthread_spinlock_t *a)
 611 {
 612         NOT_IMPLEMENTED;
 613         return _sys_pthread_funcs.f_pthread_spin_lock(a);
 614 }
 615
 616 int pthread_spin_trylock(pthread_spinlock_t *a)
 617 {
 618         NOT_IMPLEMENTED;
 619         return _sys_pthread_funcs.f_pthread_spin_trylock(a);
 620 }
 621
 622 int pthread_spin_unlock(pthread_spinlock_t *a)
 623 {
 624         NOT_IMPLEMENTED;
 625         return _sys_pthread_funcs.f_pthread_spin_unlock(a);
 626 }
 627
 628 int pthread_cancel(pthread_t tid)
 629 {
 630         if (override) {
 631                 lthread_cancel(*(struct lthread **)tid);
 632                 return 0;
 633         }
 634         return _sys_pthread_funcs.f_pthread_cancel(tid);
 635 }
 636
 637 int pthread_setcancelstate(int a, int *b)
 638 {
 639         NOT_IMPLEMENTED;
 640         return _sys_pthread_funcs.f_pthread_setcancelstate(a, b);
 641 }
 642
 643 int pthread_setcanceltype(int a, int *b)
 644 {
 645         NOT_IMPLEMENTED;
 646         return _sys_pthread_funcs.f_pthread_setcanceltype(a, b);
 647 }
 648
 649 void pthread_testcancel(void)
 650 {
 651         NOT_IMPLEMENTED;
 652         return _sys_pthread_funcs.f_pthread_testcancel();
 653 }
 654
 655
 656 int pthread_getschedparam(pthread_t tid, int *a, struct sched_param *b)
 657 {
 658         NOT_IMPLEMENTED;
 659         return _sys_pthread_funcs.f_pthread_getschedparam(tid, a, b);
 660 }
 661
 662 int pthread_setschedparam(pthread_t a, int b, const struct sched_param *c)
 663 {
 664         NOT_IMPLEMENTED;
 665         return _sys_pthread_funcs.f_pthread_setschedparam(a, b, c);
 666 }
 667
 668
 669 int nanosleep(const struct timespec *req, struct timespec *rem)
 670 {
 671         if (override) {
 672                 uint64_t ns = req->tv_sec * 1000000000 + req->tv_nsec;
 673
 674                 lthread_sleep(ns);
 675                 return 0;
 676         }
 677         return _sys_pthread_funcs.f_nanosleep(req, rem);
 678 }
 679
 680 int
 681 pthread_setaffinity_np(pthread_t thread, size_t cpusetsize,
 682                        const cpu_set_t *cpuset)
 683 {
 684         if (override) {
 685                 /* we only allow affinity with a single CPU */
 686                 if (CPU_COUNT(cpuset) != 1)
 687                         return POSIX_ERRNO(EINVAL);
 688
 689                 /* we only allow the current thread to sets its own affinity */
 690                 struct lthread *lt = (struct lthread *)thread;
 691
 692                 if (lthread_current() != lt)
 693                         return POSIX_ERRNO(EINVAL);
 694
 695                 /* determine the CPU being requested */
 696                 int i;
 697
 698                 for (i = 0; i < LTHREAD_MAX_LCORES; i++) {
 699                         if (!CPU_ISSET(i, cpuset))
 700                                 continue;
 701                         break;
 702                 }
 703                 /* check requested core is allowed */
 704                 if (i == LTHREAD_MAX_LCORES)
 705                         return POSIX_ERRNO(EINVAL);
 706
 707                 /* finally we can set affinity to the requested lcore */
 708                 lthread_set_affinity(i);
 709                 return 0;
 710         }
 711         return _sys_pthread_funcs.f_pthread_setaffinity_np(thread, cpusetsize,
 712                                                            cpuset);
 713 }