misc/tst-atomic.c

   1 /* Tests for atomic.h macros.
   2    Copyright (C) 2003-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <stdio.h>
  20 #include <atomic.h>
  21
  22 #ifndef atomic_t
  23 # define atomic_t int
  24 #endif
  25
  26 /* Test various atomic.h macros.  */
  27 static int
  28 do_test (void)
  29 {
  30   atomic_t mem, expected;
  31   int ret = 0;
  32
  33 #ifdef atomic_compare_and_exchange_val_acq
  34   mem = 24;
  35   if (atomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
  36       || mem != 35)
  37     {
  38       puts ("atomic_compare_and_exchange_val_acq test 1 failed");
  39       ret = 1;
  40     }
  41
  42   mem = 12;
  43   if (atomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
  44       || mem != 12)
  45     {
  46       puts ("atomic_compare_and_exchange_val_acq test 2 failed");
  47       ret = 1;
  48     }
  49
  50   mem = -15;
  51   if (atomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
  52       || mem != -56)
  53     {
  54       puts ("atomic_compare_and_exchange_val_acq test 3 failed");
  55       ret = 1;
  56     }
  57
  58   mem = -1;
  59   if (atomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
  60       || mem != -1)
  61     {
  62       puts ("atomic_compare_and_exchange_val_acq test 4 failed");
  63       ret = 1;
  64     }
  65 #endif
  66
  67   mem = 24;
  68   if (atomic_compare_and_exchange_bool_acq (&mem, 35, 24)
  69       || mem != 35)
  70     {
  71       puts ("atomic_compare_and_exchange_bool_acq test 1 failed");
  72       ret = 1;
  73     }
  74
  75   mem = 12;
  76   if (! atomic_compare_and_exchange_bool_acq (&mem, 10, 15)
  77       || mem != 12)
  78     {
  79       puts ("atomic_compare_and_exchange_bool_acq test 2 failed");
  80       ret = 1;
  81     }
  82
  83   mem = -15;
  84   if (atomic_compare_and_exchange_bool_acq (&mem, -56, -15)
  85       || mem != -56)
  86     {
  87       puts ("atomic_compare_and_exchange_bool_acq test 3 failed");
  88       ret = 1;
  89     }
  90
  91   mem = -1;
  92   if (! atomic_compare_and_exchange_bool_acq (&mem, 17, 0)
  93       || mem != -1)
  94     {
  95       puts ("atomic_compare_and_exchange_bool_acq test 4 failed");
  96       ret = 1;
  97     }
  98
  99   mem = 64;
 100   if (atomic_exchange_acq (&mem, 31) != 64
 101       || mem != 31)
 102     {
 103       puts ("atomic_exchange_acq test failed");
 104       ret = 1;
 105     }
 106
 107   mem = 2;
 108   if (atomic_exchange_and_add (&mem, 11) != 2
 109       || mem != 13)
 110     {
 111       puts ("atomic_exchange_and_add test failed");
 112       ret = 1;
 113     }
 114
 115   mem = 2;
 116   if (atomic_exchange_and_add_acq (&mem, 11) != 2
 117       || mem != 13)
 118     {
 119       puts ("atomic_exchange_and_add test failed");
 120       ret = 1;
 121     }
 122
 123   mem = 2;
 124   if (atomic_exchange_and_add_rel (&mem, 11) != 2
 125       || mem != 13)
 126     {
 127       puts ("atomic_exchange_and_add test failed");
 128       ret = 1;
 129     }
 130
 131   mem = -21;
 132   atomic_add (&mem, 22);
 133   if (mem != 1)
 134     {
 135       puts ("atomic_add test failed");
 136       ret = 1;
 137     }
 138
 139   mem = -1;
 140   atomic_increment (&mem);
 141   if (mem != 0)
 142     {
 143       puts ("atomic_increment test failed");
 144       ret = 1;
 145     }
 146
 147   mem = 2;
 148   if (atomic_increment_val (&mem) != 3)
 149     {
 150       puts ("atomic_increment_val test failed");
 151       ret = 1;
 152     }
 153
 154   mem = 0;
 155   if (atomic_increment_and_test (&mem)
 156       || mem != 1)
 157     {
 158       puts ("atomic_increment_and_test test 1 failed");
 159       ret = 1;
 160     }
 161
 162   mem = 35;
 163   if (atomic_increment_and_test (&mem)
 164       || mem != 36)
 165     {
 166       puts ("atomic_increment_and_test test 2 failed");
 167       ret = 1;
 168     }
 169
 170   mem = -1;
 171   if (! atomic_increment_and_test (&mem)
 172       || mem != 0)
 173     {
 174       puts ("atomic_increment_and_test test 3 failed");
 175       ret = 1;
 176     }
 177
 178   mem = 17;
 179   atomic_decrement (&mem);
 180   if (mem != 16)
 181     {
 182       puts ("atomic_decrement test failed");
 183       ret = 1;
 184     }
 185
 186   if (atomic_decrement_val (&mem) != 15)
 187     {
 188       puts ("atomic_decrement_val test failed");
 189       ret = 1;
 190     }
 191
 192   mem = 0;
 193   if (atomic_decrement_and_test (&mem)
 194       || mem != -1)
 195     {
 196       puts ("atomic_decrement_and_test test 1 failed");
 197       ret = 1;
 198     }
 199
 200   mem = 15;
 201   if (atomic_decrement_and_test (&mem)
 202       || mem != 14)
 203     {
 204       puts ("atomic_decrement_and_test test 2 failed");
 205       ret = 1;
 206     }
 207
 208   mem = 1;
 209   if (! atomic_decrement_and_test (&mem)
 210       || mem != 0)
 211     {
 212       puts ("atomic_decrement_and_test test 3 failed");
 213       ret = 1;
 214     }
 215
 216   mem = 1;
 217   if (atomic_decrement_if_positive (&mem) != 1
 218       || mem != 0)
 219     {
 220       puts ("atomic_decrement_if_positive test 1 failed");
 221       ret = 1;
 222     }
 223
 224   mem = 0;
 225   if (atomic_decrement_if_positive (&mem) != 0
 226       || mem != 0)
 227     {
 228       puts ("atomic_decrement_if_positive test 2 failed");
 229       ret = 1;
 230     }
 231
 232   mem = -1;
 233   if (atomic_decrement_if_positive (&mem) != -1
 234       || mem != -1)
 235     {
 236       puts ("atomic_decrement_if_positive test 3 failed");
 237       ret = 1;
 238     }
 239
 240   mem = -12;
 241   if (! atomic_add_negative (&mem, 10)
 242       || mem != -2)
 243     {
 244       puts ("atomic_add_negative test 1 failed");
 245       ret = 1;
 246     }
 247
 248   mem = 0;
 249   if (atomic_add_negative (&mem, 100)
 250       || mem != 100)
 251     {
 252       puts ("atomic_add_negative test 2 failed");
 253       ret = 1;
 254     }
 255
 256   mem = 15;
 257   if (atomic_add_negative (&mem, -10)
 258       || mem != 5)
 259     {
 260       puts ("atomic_add_negative test 3 failed");
 261       ret = 1;
 262     }
 263
 264   mem = -12;
 265   if (atomic_add_negative (&mem, 14)
 266       || mem != 2)
 267     {
 268       puts ("atomic_add_negative test 4 failed");
 269       ret = 1;
 270     }
 271
 272   mem = 0;
 273   if (! atomic_add_negative (&mem, -1)
 274       || mem != -1)
 275     {
 276       puts ("atomic_add_negative test 5 failed");
 277       ret = 1;
 278     }
 279
 280   mem = -31;
 281   if (atomic_add_negative (&mem, 31)
 282       || mem != 0)
 283     {
 284       puts ("atomic_add_negative test 6 failed");
 285       ret = 1;
 286     }
 287
 288   mem = -34;
 289   if (atomic_add_zero (&mem, 31)
 290       || mem != -3)
 291     {
 292       puts ("atomic_add_zero test 1 failed");
 293       ret = 1;
 294     }
 295
 296   mem = -36;
 297   if (! atomic_add_zero (&mem, 36)
 298       || mem != 0)
 299     {
 300       puts ("atomic_add_zero test 2 failed");
 301       ret = 1;
 302     }
 303
 304   mem = 113;
 305   if (atomic_add_zero (&mem, -13)
 306       || mem != 100)
 307     {
 308       puts ("atomic_add_zero test 3 failed");
 309       ret = 1;
 310     }
 311
 312   mem = -18;
 313   if (atomic_add_zero (&mem, 20)
 314       || mem != 2)
 315     {
 316       puts ("atomic_add_zero test 4 failed");
 317       ret = 1;
 318     }
 319
 320   mem = 10;
 321   if (atomic_add_zero (&mem, -20)
 322       || mem != -10)
 323     {
 324       puts ("atomic_add_zero test 5 failed");
 325       ret = 1;
 326     }
 327
 328   mem = 10;
 329   if (! atomic_add_zero (&mem, -10)
 330       || mem != 0)
 331     {
 332       puts ("atomic_add_zero test 6 failed");
 333       ret = 1;
 334     }
 335
 336   mem = 0;
 337   atomic_bit_set (&mem, 1);
 338   if (mem != 2)
 339     {
 340       puts ("atomic_bit_set test 1 failed");
 341       ret = 1;
 342     }
 343
 344   mem = 8;
 345   atomic_bit_set (&mem, 3);
 346   if (mem != 8)
 347     {
 348       puts ("atomic_bit_set test 2 failed");
 349       ret = 1;
 350     }
 351
 352 #ifdef TEST_ATOMIC64
 353   mem = 16;
 354   atomic_bit_set (&mem, 35);
 355   if (mem != 0x800000010LL)
 356     {
 357       puts ("atomic_bit_set test 3 failed");
 358       ret = 1;
 359     }
 360 #endif
 361
 362   mem = 0;
 363   if (atomic_bit_test_set (&mem, 1)
 364       || mem != 2)
 365     {
 366       puts ("atomic_bit_test_set test 1 failed");
 367       ret = 1;
 368     }
 369
 370   mem = 8;
 371   if (! atomic_bit_test_set (&mem, 3)
 372       || mem != 8)
 373     {
 374       puts ("atomic_bit_test_set test 2 failed");
 375       ret = 1;
 376     }
 377
 378 #ifdef TEST_ATOMIC64
 379   mem = 16;
 380   if (atomic_bit_test_set (&mem, 35)
 381       || mem != 0x800000010LL)
 382     {
 383       puts ("atomic_bit_test_set test 3 failed");
 384       ret = 1;
 385     }
 386
 387   mem = 0x100000000LL;
 388   if (! atomic_bit_test_set (&mem, 32)
 389       || mem != 0x100000000LL)
 390     {
 391       puts ("atomic_bit_test_set test 4 failed");
 392       ret = 1;
 393     }
 394 #endif
 395
 396 #ifdef catomic_compare_and_exchange_val_acq
 397   mem = 24;
 398   if (catomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
 399       || mem != 35)
 400     {
 401       puts ("catomic_compare_and_exchange_val_acq test 1 failed");
 402       ret = 1;
 403     }
 404
 405   mem = 12;
 406   if (catomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
 407       || mem != 12)
 408     {
 409       puts ("catomic_compare_and_exchange_val_acq test 2 failed");
 410       ret = 1;
 411     }
 412
 413   mem = -15;
 414   if (catomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
 415       || mem != -56)
 416     {
 417       puts ("catomic_compare_and_exchange_val_acq test 3 failed");
 418       ret = 1;
 419     }
 420
 421   mem = -1;
 422   if (catomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
 423       || mem != -1)
 424     {
 425       puts ("catomic_compare_and_exchange_val_acq test 4 failed");
 426       ret = 1;
 427     }
 428 #endif
 429
 430   mem = 24;
 431   if (catomic_compare_and_exchange_bool_acq (&mem, 35, 24)
 432       || mem != 35)
 433     {
 434       puts ("catomic_compare_and_exchange_bool_acq test 1 failed");
 435       ret = 1;
 436     }
 437
 438   mem = 12;
 439   if (! catomic_compare_and_exchange_bool_acq (&mem, 10, 15)
 440       || mem != 12)
 441     {
 442       puts ("catomic_compare_and_exchange_bool_acq test 2 failed");
 443       ret = 1;
 444     }
 445
 446   mem = -15;
 447   if (catomic_compare_and_exchange_bool_acq (&mem, -56, -15)
 448       || mem != -56)
 449     {
 450       puts ("catomic_compare_and_exchange_bool_acq test 3 failed");
 451       ret = 1;
 452     }
 453
 454   mem = -1;
 455   if (! catomic_compare_and_exchange_bool_acq (&mem, 17, 0)
 456       || mem != -1)
 457     {
 458       puts ("catomic_compare_and_exchange_bool_acq test 4 failed");
 459       ret = 1;
 460     }
 461
 462   mem = 2;
 463   if (catomic_exchange_and_add (&mem, 11) != 2
 464       || mem != 13)
 465     {
 466       puts ("catomic_exchange_and_add test failed");
 467       ret = 1;
 468     }
 469
 470   mem = -21;
 471   catomic_add (&mem, 22);
 472   if (mem != 1)
 473     {
 474       puts ("catomic_add test failed");
 475       ret = 1;
 476     }
 477
 478   mem = -1;
 479   catomic_increment (&mem);
 480   if (mem != 0)
 481     {
 482       puts ("catomic_increment test failed");
 483       ret = 1;
 484     }
 485
 486   mem = 2;
 487   if (catomic_increment_val (&mem) != 3)
 488     {
 489       puts ("catomic_increment_val test failed");
 490       ret = 1;
 491     }
 492
 493   mem = 17;
 494   catomic_decrement (&mem);
 495   if (mem != 16)
 496     {
 497       puts ("catomic_decrement test failed");
 498       ret = 1;
 499     }
 500
 501   if (catomic_decrement_val (&mem) != 15)
 502     {
 503       puts ("catomic_decrement_val test failed");
 504       ret = 1;
 505     }
 506
 507   /* Tests for C11-like atomics.  */
 508   mem = 11;
 509   if (atomic_load_relaxed (&mem) != 11 || atomic_load_acquire (&mem) != 11)
 510     {
 511       puts ("atomic_load_{relaxed,acquire} test failed");
 512       ret = 1;
 513     }
 514
 515   atomic_store_relaxed (&mem, 12);
 516   if (mem != 12)
 517     {
 518       puts ("atomic_store_relaxed test failed");
 519       ret = 1;
 520     }
 521   atomic_store_release (&mem, 13);
 522   if (mem != 13)
 523     {
 524       puts ("atomic_store_release test failed");
 525       ret = 1;
 526     }
 527
 528   mem = 14;
 529   expected = 14;
 530   if (!atomic_compare_exchange_weak_relaxed (&mem, &expected, 25)
 531       || mem != 25 || expected != 14)
 532     {
 533       puts ("atomic_compare_exchange_weak_relaxed test 1 failed");
 534       ret = 1;
 535     }
 536   if (atomic_compare_exchange_weak_relaxed (&mem, &expected, 14)
 537       || mem != 25 || expected != 25)
 538     {
 539       puts ("atomic_compare_exchange_weak_relaxed test 2 failed");
 540       ret = 1;
 541     }
 542   mem = 14;
 543   expected = 14;
 544   if (!atomic_compare_exchange_weak_acquire (&mem, &expected, 25)
 545       || mem != 25 || expected != 14)
 546     {
 547       puts ("atomic_compare_exchange_weak_acquire test 1 failed");
 548       ret = 1;
 549     }
 550   if (atomic_compare_exchange_weak_acquire (&mem, &expected, 14)
 551       || mem != 25 || expected != 25)
 552     {
 553       puts ("atomic_compare_exchange_weak_acquire test 2 failed");
 554       ret = 1;
 555     }
 556   mem = 14;
 557   expected = 14;
 558   if (!atomic_compare_exchange_weak_release (&mem, &expected, 25)
 559       || mem != 25 || expected != 14)
 560     {
 561       puts ("atomic_compare_exchange_weak_release test 1 failed");
 562       ret = 1;
 563     }
 564   if (atomic_compare_exchange_weak_release (&mem, &expected, 14)
 565       || mem != 25 || expected != 25)
 566     {
 567       puts ("atomic_compare_exchange_weak_release test 2 failed");
 568       ret = 1;
 569     }
 570
 571   mem = 23;
 572   if (atomic_exchange_acquire (&mem, 42) != 23 || mem != 42)
 573     {
 574       puts ("atomic_exchange_acquire test failed");
 575       ret = 1;
 576     }
 577   mem = 23;
 578   if (atomic_exchange_release (&mem, 42) != 23 || mem != 42)
 579     {
 580       puts ("atomic_exchange_release test failed");
 581       ret = 1;
 582     }
 583
 584   mem = 23;
 585   if (atomic_fetch_add_relaxed (&mem, 1) != 23 || mem != 24)
 586     {
 587       puts ("atomic_fetch_add_relaxed test failed");
 588       ret = 1;
 589     }
 590   mem = 23;
 591   if (atomic_fetch_add_acquire (&mem, 1) != 23 || mem != 24)
 592     {
 593       puts ("atomic_fetch_add_acquire test failed");
 594       ret = 1;
 595     }
 596   mem = 23;
 597   if (atomic_fetch_add_release (&mem, 1) != 23 || mem != 24)
 598     {
 599       puts ("atomic_fetch_add_release test failed");
 600       ret = 1;
 601     }
 602   mem = 23;
 603   if (atomic_fetch_add_acq_rel (&mem, 1) != 23 || mem != 24)
 604     {
 605       puts ("atomic_fetch_add_acq_rel test failed");
 606       ret = 1;
 607     }
 608
 609   mem = 3;
 610   if (atomic_fetch_and_acquire (&mem, 2) != 3 || mem != 2)
 611     {
 612       puts ("atomic_fetch_and_acquire test failed");
 613       ret = 1;
 614     }
 615
 616   mem = 4;
 617   if (atomic_fetch_or_relaxed (&mem, 2) != 4 || mem != 6)
 618     {
 619       puts ("atomic_fetch_or_relaxed test failed");
 620       ret = 1;
 621     }
 622   mem = 4;
 623   if (atomic_fetch_or_acquire (&mem, 2) != 4 || mem != 6)
 624     {
 625       puts ("atomic_fetch_or_acquire test failed");
 626       ret = 1;
 627     }
 628
 629   /* This is a single-threaded test, so we can't test the effects of the
 630      fences.  */
 631   atomic_thread_fence_acquire ();
 632   atomic_thread_fence_release ();
 633   atomic_thread_fence_seq_cst ();
 634
 635   return ret;
 636 }
 637
 638 #include <support/test-driver.c>