examples/performance-thread/pthread_shim/pthread_shim.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <sys/types.h>
   8 #include <errno.h>
   9 #include <sched.h>
  10 #include <dlfcn.h>
  11
  12 #include <rte_log.h>
  13
  14 #include "lthread_api.h"
  15 #include "pthread_shim.h"
  16
  17 #define RTE_LOGTYPE_PTHREAD_SHIM RTE_LOGTYPE_USER3
  18
  19 #define POSIX_ERRNO(x)  (x)
  20
  21 /* some releases of FreeBSD 10, e.g. 10.0, don't have CPU_COUNT macro */
  22 #ifndef CPU_COUNT
  23 #define CPU_COUNT(x) __cpu_count(x)
  24
  25 static inline unsigned int
  26 __cpu_count(const rte_cpuset_t *cpuset)
  27 {
  28         unsigned int i, count = 0;
  29         for (i = 0; i < RTE_MAX_LCORE; i++)
  30                 if (CPU_ISSET(i, cpuset))
  31                         count++;
  32         return count;
  33 }
  34 #endif
  35
  36 /*
  37  * this flag determines at run time if we override pthread
  38  * calls and map then to equivalent lthread calls
  39  * or of we call the standard pthread function
  40  */
  41 static __thread int override;
  42
  43
  44 /*
  45  * this structures contains function pointers that will be
  46  * initialised to the loaded address of the real
  47  * pthread library API functions
  48  */
  49 struct pthread_lib_funcs {
  50 int (*f_pthread_barrier_destroy)
  51         (pthread_barrier_t *);
  52 int (*f_pthread_barrier_init)
  53         (pthread_barrier_t *, const pthread_barrierattr_t *, unsigned);
  54 int (*f_pthread_barrier_wait)
  55         (pthread_barrier_t *);
  56 int (*f_pthread_cond_broadcast)
  57         (pthread_cond_t *);
  58 int (*f_pthread_cond_destroy)
  59         (pthread_cond_t *);
  60 int (*f_pthread_cond_init)
  61         (pthread_cond_t *, const pthread_condattr_t *);
  62 int (*f_pthread_cond_signal)
  63         (pthread_cond_t *);
  64 int (*f_pthread_cond_timedwait)
  65         (pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
  66 int (*f_pthread_cond_wait)
  67         (pthread_cond_t *, pthread_mutex_t *);
  68 int (*f_pthread_create)
  69         (pthread_t *, const pthread_attr_t *, void *(*)(void *), void *);
  70 int (*f_pthread_detach)
  71         (pthread_t);
  72 int (*f_pthread_equal)
  73         (pthread_t, pthread_t);
  74 void (*f_pthread_exit)
  75         (void *);
  76 void * (*f_pthread_getspecific)
  77         (pthread_key_t);
  78 int (*f_pthread_getcpuclockid)
  79         (pthread_t, clockid_t *);
  80 int (*f_pthread_join)
  81         (pthread_t, void **);
  82 int (*f_pthread_key_create)
  83         (pthread_key_t *, void (*) (void *));
  84 int (*f_pthread_key_delete)
  85         (pthread_key_t);
  86 int (*f_pthread_mutex_destroy)
  87         (pthread_mutex_t *__mutex);
  88 int (*f_pthread_mutex_init)
  89         (pthread_mutex_t *__mutex, const pthread_mutexattr_t *);
  90 int (*f_pthread_mutex_lock)
  91         (pthread_mutex_t *__mutex);
  92 int (*f_pthread_mutex_trylock)
  93         (pthread_mutex_t *__mutex);
  94 int (*f_pthread_mutex_timedlock)
  95         (pthread_mutex_t *__mutex, const struct timespec *);
  96 int (*f_pthread_mutex_unlock)
  97         (pthread_mutex_t *__mutex);
  98 int (*f_pthread_once)
  99         (pthread_once_t *, void (*) (void));
 100 int (*f_pthread_rwlock_destroy)
 101         (pthread_rwlock_t *__rwlock);
 102 int (*f_pthread_rwlock_init)
 103         (pthread_rwlock_t *__rwlock, const pthread_rwlockattr_t *);
 104 int (*f_pthread_rwlock_rdlock)
 105         (pthread_rwlock_t *__rwlock);
 106 int (*f_pthread_rwlock_timedrdlock)
 107         (pthread_rwlock_t *__rwlock, const struct timespec *);
 108 int (*f_pthread_rwlock_timedwrlock)
 109         (pthread_rwlock_t *__rwlock, const struct timespec *);
 110 int (*f_pthread_rwlock_tryrdlock)
 111         (pthread_rwlock_t *__rwlock);
 112 int (*f_pthread_rwlock_trywrlock)
 113         (pthread_rwlock_t *__rwlock);
 114 int (*f_pthread_rwlock_unlock)
 115         (pthread_rwlock_t *__rwlock);
 116 int (*f_pthread_rwlock_wrlock)
 117         (pthread_rwlock_t *__rwlock);
 118 pthread_t (*f_pthread_self)
 119         (void);
 120 int (*f_pthread_setspecific)
 121         (pthread_key_t, const void *);
 122 int (*f_pthread_spin_init)
 123         (pthread_spinlock_t *__spin, int);
 124 int (*f_pthread_spin_destroy)
 125         (pthread_spinlock_t *__spin);
 126 int (*f_pthread_spin_lock)
 127         (pthread_spinlock_t *__spin);
 128 int (*f_pthread_spin_trylock)
 129         (pthread_spinlock_t *__spin);
 130 int (*f_pthread_spin_unlock)
 131         (pthread_spinlock_t *__spin);
 132 int (*f_pthread_cancel)
 133         (pthread_t);
 134 int (*f_pthread_setcancelstate)
 135         (int, int *);
 136 int (*f_pthread_setcanceltype)
 137         (int, int *);
 138 void (*f_pthread_testcancel)
 139         (void);
 140 int (*f_pthread_getschedparam)
 141         (pthread_t pthread, int *, struct sched_param *);
 142 int (*f_pthread_setschedparam)
 143         (pthread_t, int, const struct sched_param *);
 144 int (*f_pthread_yield)
 145         (void);
 146 int (*f_pthread_setaffinity_np)
 147         (pthread_t thread, size_t cpusetsize, const rte_cpuset_t *cpuset);
 148 int (*f_nanosleep)
 149         (const struct timespec *req, struct timespec *rem);
 150 } _sys_pthread_funcs = {
 151         .f_pthread_barrier_destroy = NULL,
 152 };
 153
 154
 155 /*
 156  * this macro obtains the loaded address of a library function
 157  * and saves it.
 158  */
 159 static void *__libc_dl_handle = RTLD_NEXT;
 160
 161 #define get_addr_of_loaded_symbol(name) do {                            \
 162         char *error_str;                                                \
 163         _sys_pthread_funcs.f_##name = dlsym(__libc_dl_handle, (#name)); \
 164         error_str = dlerror();                                          \
 165         if (error_str != NULL) {                                        \
 166                 fprintf(stderr, "%s\n", error_str);                     \
 167         }                                                               \
 168 } while (0)
 169
 170
 171 /*
 172  * The constructor function initialises the
 173  * function pointers for pthread library functions
 174  */
 175 RTE_INIT(pthread_intercept_ctor)
 176 {
 177         override = 0;
 178         /*
 179          * Get the original functions
 180          */
 181         get_addr_of_loaded_symbol(pthread_barrier_destroy);
 182         get_addr_of_loaded_symbol(pthread_barrier_init);
 183         get_addr_of_loaded_symbol(pthread_barrier_wait);
 184         get_addr_of_loaded_symbol(pthread_cond_broadcast);
 185         get_addr_of_loaded_symbol(pthread_cond_destroy);
 186         get_addr_of_loaded_symbol(pthread_cond_init);
 187         get_addr_of_loaded_symbol(pthread_cond_signal);
 188         get_addr_of_loaded_symbol(pthread_cond_timedwait);
 189         get_addr_of_loaded_symbol(pthread_cond_wait);
 190         get_addr_of_loaded_symbol(pthread_create);
 191         get_addr_of_loaded_symbol(pthread_detach);
 192         get_addr_of_loaded_symbol(pthread_equal);
 193         get_addr_of_loaded_symbol(pthread_exit);
 194         get_addr_of_loaded_symbol(pthread_getspecific);
 195         get_addr_of_loaded_symbol(pthread_getcpuclockid);
 196         get_addr_of_loaded_symbol(pthread_join);
 197         get_addr_of_loaded_symbol(pthread_key_create);
 198         get_addr_of_loaded_symbol(pthread_key_delete);
 199         get_addr_of_loaded_symbol(pthread_mutex_destroy);
 200         get_addr_of_loaded_symbol(pthread_mutex_init);
 201         get_addr_of_loaded_symbol(pthread_mutex_lock);
 202         get_addr_of_loaded_symbol(pthread_mutex_trylock);
 203         get_addr_of_loaded_symbol(pthread_mutex_timedlock);
 204         get_addr_of_loaded_symbol(pthread_mutex_unlock);
 205         get_addr_of_loaded_symbol(pthread_once);
 206         get_addr_of_loaded_symbol(pthread_rwlock_destroy);
 207         get_addr_of_loaded_symbol(pthread_rwlock_init);
 208         get_addr_of_loaded_symbol(pthread_rwlock_rdlock);
 209         get_addr_of_loaded_symbol(pthread_rwlock_timedrdlock);
 210         get_addr_of_loaded_symbol(pthread_rwlock_timedwrlock);
 211         get_addr_of_loaded_symbol(pthread_rwlock_tryrdlock);
 212         get_addr_of_loaded_symbol(pthread_rwlock_trywrlock);
 213         get_addr_of_loaded_symbol(pthread_rwlock_unlock);
 214         get_addr_of_loaded_symbol(pthread_rwlock_wrlock);
 215         get_addr_of_loaded_symbol(pthread_self);
 216         get_addr_of_loaded_symbol(pthread_setspecific);
 217         get_addr_of_loaded_symbol(pthread_spin_init);
 218         get_addr_of_loaded_symbol(pthread_spin_destroy);
 219         get_addr_of_loaded_symbol(pthread_spin_lock);
 220         get_addr_of_loaded_symbol(pthread_spin_trylock);
 221         get_addr_of_loaded_symbol(pthread_spin_unlock);
 222         get_addr_of_loaded_symbol(pthread_cancel);
 223         get_addr_of_loaded_symbol(pthread_setcancelstate);
 224         get_addr_of_loaded_symbol(pthread_setcanceltype);
 225         get_addr_of_loaded_symbol(pthread_testcancel);
 226         get_addr_of_loaded_symbol(pthread_getschedparam);
 227         get_addr_of_loaded_symbol(pthread_setschedparam);
 228         get_addr_of_loaded_symbol(pthread_yield);
 229         get_addr_of_loaded_symbol(pthread_setaffinity_np);
 230         get_addr_of_loaded_symbol(nanosleep);
 231 }
 232
 233
 234 /*
 235  * Enable/Disable pthread override
 236  * state
 237  *  0 disable
 238  *  1 enable
 239  */
 240 void pthread_override_set(int state)
 241 {
 242         override = state;
 243 }
 244
 245
 246 /*
 247  * Return pthread override state
 248  * return
 249  *  0 disable
 250  *  1 enable
 251  */
 252 int pthread_override_get(void)
 253 {
 254         return override;
 255 }
 256
 257 /*
 258  * This macro is used to catch and log
 259  * invocation of stubs for unimplemented pthread
 260  * API functions.
 261  */
 262 #define NOT_IMPLEMENTED do {                            \
 263         if (override) {                                 \
 264                 RTE_LOG(WARNING,                        \
 265                         PTHREAD_SHIM,                   \
 266                         "WARNING %s NOT IMPLEMENTED\n", \
 267                         __func__);                      \
 268         }                                               \
 269 } while (0)
 270
 271 /*
 272  * pthread API override functions follow
 273  * Note in this example code only a subset of functions are
 274  * implemented.
 275  *
 276  * The stub functions provided will issue a warning log
 277  * message if an unimplemented function is invoked
 278  *
 279  */
 280
 281 int pthread_barrier_destroy(pthread_barrier_t *a)
 282 {
 283         NOT_IMPLEMENTED;
 284         return _sys_pthread_funcs.f_pthread_barrier_destroy(a);
 285 }
 286
 287 int
 288 pthread_barrier_init(pthread_barrier_t *a,
 289                      const pthread_barrierattr_t *b, unsigned c)
 290 {
 291         NOT_IMPLEMENTED;
 292         return _sys_pthread_funcs.f_pthread_barrier_init(a, b, c);
 293 }
 294
 295 int pthread_barrier_wait(pthread_barrier_t *a)
 296 {
 297         NOT_IMPLEMENTED;
 298         return _sys_pthread_funcs.f_pthread_barrier_wait(a);
 299 }
 300
 301 int pthread_cond_broadcast(pthread_cond_t *cond)
 302 {
 303         if (override) {
 304
 305                 lthread_cond_broadcast(*(struct lthread_cond **)cond);
 306                 return 0;
 307         }
 308         return _sys_pthread_funcs.f_pthread_cond_broadcast(cond);
 309 }
 310
 311 int pthread_mutex_destroy(pthread_mutex_t *mutex)
 312 {
 313         if (override)
 314                 return lthread_mutex_destroy(*(struct lthread_mutex **)mutex);
 315         return _sys_pthread_funcs.f_pthread_mutex_destroy(mutex);
 316 }
 317
 318 int pthread_cond_destroy(pthread_cond_t *cond)
 319 {
 320         if (override)
 321                 return lthread_cond_destroy(*(struct lthread_cond **)cond);
 322         return _sys_pthread_funcs.f_pthread_cond_destroy(cond);
 323 }
 324
 325 int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
 326 {
 327         if (override)
 328                 return lthread_cond_init(NULL,
 329                                 (struct lthread_cond **)cond,
 330                                 (const struct lthread_condattr *) attr);
 331         return _sys_pthread_funcs.f_pthread_cond_init(cond, attr);
 332 }
 333
 334 int pthread_cond_signal(pthread_cond_t *cond)
 335 {
 336         if (override) {
 337                 lthread_cond_signal(*(struct lthread_cond **)cond);
 338                 return 0;
 339         }
 340         return _sys_pthread_funcs.f_pthread_cond_signal(cond);
 341 }
 342
 343 int
 344 pthread_cond_timedwait(pthread_cond_t *__restrict cond,
 345                        pthread_mutex_t *__restrict mutex,
 346                        const struct timespec *__restrict time)
 347 {
 348         NOT_IMPLEMENTED;
 349         return _sys_pthread_funcs.f_pthread_cond_timedwait(cond, mutex, time);
 350 }
 351
 352 int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 353 {
 354         if (override) {
 355                 pthread_mutex_unlock(mutex);
 356                 int rv = lthread_cond_wait(*(struct lthread_cond **)cond, 0);
 357
 358                 pthread_mutex_lock(mutex);
 359                 return rv;
 360         }
 361         return _sys_pthread_funcs.f_pthread_cond_wait(cond, mutex);
 362 }
 363
 364 int
 365 pthread_create(pthread_t *__restrict tid,
 366                 const pthread_attr_t *__restrict attr,
 367                 lthread_func_t func,
 368                void *__restrict arg)
 369 {
 370         if (override) {
 371                 int lcore = -1;
 372
 373                 if (attr != NULL) {
 374                         /* determine CPU being requested */
 375                         rte_cpuset_t cpuset;
 376
 377                         CPU_ZERO(&cpuset);
 378                         pthread_attr_getaffinity_np(attr,
 379                                                 sizeof(rte_cpuset_t),
 380                                                 &cpuset);
 381
 382                         if (CPU_COUNT(&cpuset) != 1)
 383                                 return POSIX_ERRNO(EINVAL);
 384
 385                         for (lcore = 0; lcore < LTHREAD_MAX_LCORES; lcore++) {
 386                                 if (!CPU_ISSET(lcore, &cpuset))
 387                                         continue;
 388                                 break;
 389                         }
 390                 }
 391                 return lthread_create((struct lthread **)tid, lcore,
 392                                       func, arg);
 393         }
 394         return _sys_pthread_funcs.f_pthread_create(tid, attr, func, arg);
 395 }
 396
 397 int pthread_detach(pthread_t tid)
 398 {
 399         if (override) {
 400                 struct lthread *lt = (struct lthread *)tid;
 401
 402                 if (lt == lthread_current()) {
 403                         lthread_detach();
 404                         return 0;
 405                 }
 406                 NOT_IMPLEMENTED;
 407         }
 408         return _sys_pthread_funcs.f_pthread_detach(tid);
 409 }
 410
 411 int pthread_equal(pthread_t a, pthread_t b)
 412 {
 413         NOT_IMPLEMENTED;
 414         return _sys_pthread_funcs.f_pthread_equal(a, b);
 415 }
 416
 417 void pthread_exit_override(void *v)
 418 {
 419         if (override) {
 420                 lthread_exit(v);
 421                 return;
 422         }
 423         _sys_pthread_funcs.f_pthread_exit(v);
 424 }
 425
 426 void
 427 *pthread_getspecific(pthread_key_t key)
 428 {
 429         if (override)
 430                 return lthread_getspecific((unsigned int) key);
 431         return _sys_pthread_funcs.f_pthread_getspecific(key);
 432 }
 433
 434 int pthread_getcpuclockid(pthread_t a, clockid_t *b)
 435 {
 436         NOT_IMPLEMENTED;
 437         return _sys_pthread_funcs.f_pthread_getcpuclockid(a, b);
 438 }
 439
 440 int pthread_join(pthread_t tid, void **val)
 441 {
 442         if (override)
 443                 return lthread_join((struct lthread *)tid, val);
 444         return _sys_pthread_funcs.f_pthread_join(tid, val);
 445 }
 446
 447 int pthread_key_create(pthread_key_t *keyptr, void (*dtor) (void *))
 448 {
 449         if (override)
 450                 return lthread_key_create((unsigned int *)keyptr, dtor);
 451         return _sys_pthread_funcs.f_pthread_key_create(keyptr, dtor);
 452 }
 453
 454 int pthread_key_delete(pthread_key_t key)
 455 {
 456         if (override) {
 457                 lthread_key_delete((unsigned int) key);
 458                 return 0;
 459         }
 460         return _sys_pthread_funcs.f_pthread_key_delete(key);
 461 }
 462
 463
 464 int
 465 pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
 466 {
 467         if (override)
 468                 return lthread_mutex_init(NULL,
 469                                 (struct lthread_mutex **)mutex,
 470                                 (const struct lthread_mutexattr *)attr);
 471         return _sys_pthread_funcs.f_pthread_mutex_init(mutex, attr);
 472 }
 473
 474 int pthread_mutex_lock(pthread_mutex_t *mutex)
 475 {
 476         if (override)
 477                 return lthread_mutex_lock(*(struct lthread_mutex **)mutex);
 478         return _sys_pthread_funcs.f_pthread_mutex_lock(mutex);
 479 }
 480
 481 int pthread_mutex_trylock(pthread_mutex_t *mutex)
 482 {
 483         if (override)
 484                 return lthread_mutex_trylock(*(struct lthread_mutex **)mutex);
 485         return _sys_pthread_funcs.f_pthread_mutex_trylock(mutex);
 486 }
 487
 488 int pthread_mutex_timedlock(pthread_mutex_t *mutex, const struct timespec *b)
 489 {
 490         NOT_IMPLEMENTED;
 491         return _sys_pthread_funcs.f_pthread_mutex_timedlock(mutex, b);
 492 }
 493
 494 int pthread_mutex_unlock(pthread_mutex_t *mutex)
 495 {
 496         if (override)
 497                 return lthread_mutex_unlock(*(struct lthread_mutex **)mutex);
 498         return _sys_pthread_funcs.f_pthread_mutex_unlock(mutex);
 499 }
 500
 501 int pthread_once(pthread_once_t *a, void (b) (void))
 502 {
 503         NOT_IMPLEMENTED;
 504         return _sys_pthread_funcs.f_pthread_once(a, b);
 505 }
 506
 507 int pthread_rwlock_destroy(pthread_rwlock_t *a)
 508 {
 509         NOT_IMPLEMENTED;
 510         return _sys_pthread_funcs.f_pthread_rwlock_destroy(a);
 511 }
 512
 513 int pthread_rwlock_init(pthread_rwlock_t *a, const pthread_rwlockattr_t *b)
 514 {
 515         NOT_IMPLEMENTED;
 516         return _sys_pthread_funcs.f_pthread_rwlock_init(a, b);
 517 }
 518
 519 int pthread_rwlock_rdlock(pthread_rwlock_t *a)
 520 {
 521         NOT_IMPLEMENTED;
 522         return _sys_pthread_funcs.f_pthread_rwlock_rdlock(a);
 523 }
 524
 525 int pthread_rwlock_timedrdlock(pthread_rwlock_t *a, const struct timespec *b)
 526 {
 527         NOT_IMPLEMENTED;
 528         return _sys_pthread_funcs.f_pthread_rwlock_timedrdlock(a, b);
 529 }
 530
 531 int pthread_rwlock_timedwrlock(pthread_rwlock_t *a, const struct timespec *b)
 532 {
 533         NOT_IMPLEMENTED;
 534         return _sys_pthread_funcs.f_pthread_rwlock_timedwrlock(a, b);
 535 }
 536
 537 int pthread_rwlock_tryrdlock(pthread_rwlock_t *a)
 538 {
 539         NOT_IMPLEMENTED;
 540         return _sys_pthread_funcs.f_pthread_rwlock_tryrdlock(a);
 541 }
 542
 543 int pthread_rwlock_trywrlock(pthread_rwlock_t *a)
 544 {
 545         NOT_IMPLEMENTED;
 546         return _sys_pthread_funcs.f_pthread_rwlock_trywrlock(a);
 547 }
 548
 549 int pthread_rwlock_unlock(pthread_rwlock_t *a)
 550 {
 551         NOT_IMPLEMENTED;
 552         return _sys_pthread_funcs.f_pthread_rwlock_unlock(a);
 553 }
 554
 555 int pthread_rwlock_wrlock(pthread_rwlock_t *a)
 556 {
 557         NOT_IMPLEMENTED;
 558         return _sys_pthread_funcs.f_pthread_rwlock_wrlock(a);
 559 }
 560
 561 #ifdef RTE_EXEC_ENV_LINUXAPP
 562 int
 563 pthread_yield(void)
 564 {
 565         if (override) {
 566                 lthread_yield();
 567                 return 0;
 568         }
 569         return _sys_pthread_funcs.f_pthread_yield();
 570 }
 571 #else
 572 void
 573 pthread_yield(void)
 574 {
 575         if (override)
 576                 lthread_yield();
 577         else
 578                 _sys_pthread_funcs.f_pthread_yield();
 579 }
 580 #endif
 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 rte_cpuset_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 }