cmodelint.cc

   1 #include <stdio.h>
   2 #include "model.h"
   3 #include "action.h"
   4 #include "cmodelint.h"
   5 #include "threads-model.h"
   6
   7 memory_order orders[6] = {
   8         memory_order_relaxed, memory_order_consume, memory_order_acquire,
   9         memory_order_release, memory_order_acq_rel, memory_order_seq_cst
  10 };
  11
  12 /** Performs a read action.*/
  13 uint64_t model_read_action(void * obj, memory_order ord) {
  14         return model->switch_to_master(new ModelAction(ATOMIC_READ, ord, obj));
  15 }
  16
  17 /** Performs a write action.*/
  18 void model_write_action(void * obj, memory_order ord, uint64_t val) {
  19         model->switch_to_master(new ModelAction(ATOMIC_WRITE, ord, obj, val));
  20 }
  21
  22 /** Performs an init action. */
  23 void model_init_action(void * obj, uint64_t val) {
  24         model->switch_to_master(new ModelAction(ATOMIC_INIT, memory_order_relaxed, obj, val));
  25 }
  26
  27 /**
  28  * Performs the read part of a RMW action. The next action must either be the
  29  * write part of the RMW action or an explicit close out of the RMW action w/o
  30  * a write.
  31  */
  32 uint64_t model_rmwr_action(void *obj, memory_order ord) {
  33         return model->switch_to_master(new ModelAction(ATOMIC_RMWR, ord, obj));
  34 }
  35
  36 /**
  37  * Performs the read part of a RMW CAS action. The next action must
  38  * either be the write part of the RMW action or an explicit close out
  39  * of the RMW action w/o a write.
  40  */
  41 uint64_t model_rmwrcas_action(void *obj, memory_order ord, uint64_t oldval, int size) {
  42         return model->switch_to_master(new ModelAction(ATOMIC_RMWRCAS, ord, obj, oldval, size));
  43 }
  44
  45
  46 /** Performs the write part of a RMW action. */
  47 void model_rmw_action(void *obj, memory_order ord, uint64_t val) {
  48         model->switch_to_master(new ModelAction(ATOMIC_RMW, ord, obj, val));
  49 }
  50
  51 /** Closes out a RMW action without doing a write. */
  52 void model_rmwc_action(void *obj, memory_order ord) {
  53         model->switch_to_master(new ModelAction(ATOMIC_RMWC, ord, obj));
  54 }
  55
  56 /** Issues a fence operation. */
  57 void model_fence_action(memory_order ord) {
  58         model->switch_to_master(new ModelAction(ATOMIC_FENCE, ord, FENCE_LOCATION));
  59 }
  60
  61 /* ---  helper functions --- */
  62 uint64_t model_rmwrcas_action_helper(void *obj, int atomic_index, uint64_t oldval, int size, const char *position) {
  63         return model->switch_to_master(
  64                 new ModelAction(ATOMIC_RMWRCAS, position, orders[atomic_index], obj)
  65                 );
  66 }
  67
  68 uint64_t model_rmwr_action_helper(void *obj, int atomic_index, const char *position) {
  69         return model->switch_to_master(
  70                 new ModelAction(ATOMIC_RMWR, position, orders[atomic_index], obj)
  71                 );
  72 }
  73
  74 void model_rmw_action_helper(void *obj, uint64_t val, int atomic_index, const char * position) {
  75         model->switch_to_master(
  76                 new ModelAction(ATOMIC_RMW, position, orders[atomic_index], obj, val)
  77                 );
  78 }
  79
  80 void model_rmwc_action_helper(void *obj, int atomic_index, const char *position) {
  81         model->switch_to_master(
  82                 new ModelAction(ATOMIC_RMWC, position, orders[atomic_index], obj)
  83                 );
  84 }
  85
  86 // cds atomic inits
  87 void cds_atomic_init8(void * obj, uint8_t val, const char * position) {
  88         model->switch_to_master(
  89                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
  90                 );
  91 }
  92 void cds_atomic_init16(void * obj, uint16_t val, const char * position) {
  93         model->switch_to_master(
  94                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
  95                 );
  96 }
  97 void cds_atomic_init32(void * obj, uint32_t val, const char * position) {
  98         model->switch_to_master(
  99                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
 100                 );
 101 }
 102 void cds_atomic_init64(void * obj, uint64_t val, const char * position) {
 103         model->switch_to_master(
 104                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, val)
 105                 );
 106 }
 107
 108
 109 // cds atomic loads
 110 uint8_t cds_atomic_load8(void * obj, int atomic_index, const char * position) {
 111         return (uint8_t) ( model->switch_to_master(
 112                                                                                          new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj))
 113                                                                                  );
 114 }
 115 uint16_t cds_atomic_load16(void * obj, int atomic_index, const char * position) {
 116         return (uint16_t) ( model->switch_to_master(
 117                                                                                                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj))
 118                                                                                         );
 119 }
 120 uint32_t cds_atomic_load32(void * obj, int atomic_index, const char * position) {
 121         return (uint32_t) ( model->switch_to_master(
 122                                                                                                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj))
 123                                                                                         );
 124 }
 125 uint64_t cds_atomic_load64(void * obj, int atomic_index, const char * position) {
 126         return model->switch_to_master(
 127                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj)
 128                 );
 129 }
 130
 131 // cds atomic stores
 132 void cds_atomic_store8(void * obj, uint8_t val, int atomic_index, const char * position) {
 133         model->switch_to_master(
 134                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 135                 );
 136 }
 137 void cds_atomic_store16(void * obj, uint16_t val, int atomic_index, const char * position) {
 138         model->switch_to_master(
 139                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 140                 );
 141 }
 142 void cds_atomic_store32(void * obj, uint32_t val, int atomic_index, const char * position) {
 143         model->switch_to_master(
 144                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 145                 );
 146 }
 147 void cds_atomic_store64(void * obj, uint64_t val, int atomic_index, const char * position) {
 148         model->switch_to_master(
 149                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, val)
 150                 );
 151 }
 152
 153 #define _ATOMIC_RMW_(__op__, size, addr, val, atomic_index, position)            \
 154         ({                                                                      \
 155                 uint ## size ## _t _old = model_rmwr_action_helper(addr, atomic_index, position);   \
 156                 uint ## size ## _t _copy = _old;                                          \
 157                 uint ## size ## _t _val = val;                                            \
 158                 _copy __op__ _val;                                                    \
 159                 model_rmw_action_helper(addr, (uint64_t) _copy, atomic_index, position);        \
 160                 return _old;                                                          \
 161         })
 162
 163 // cds atomic exchange
 164 uint8_t cds_atomic_exchange8(void* addr, uint8_t val, int atomic_index, const char * position) {
 165         _ATOMIC_RMW_( =, 8, addr, val, atomic_index, position);
 166 }
 167 uint16_t cds_atomic_exchange16(void* addr, uint16_t val, int atomic_index, const char * position) {
 168         _ATOMIC_RMW_( =, 16, addr, val, atomic_index, position);
 169 }
 170 uint32_t cds_atomic_exchange32(void* addr, uint32_t val, int atomic_index, const char * position) {
 171         _ATOMIC_RMW_( =, 32, addr, val, atomic_index, position);
 172 }
 173 uint64_t cds_atomic_exchange64(void* addr, uint64_t val, int atomic_index, const char * position) {
 174         _ATOMIC_RMW_( =, 64, addr, val, atomic_index, position);
 175 }
 176
 177 // cds atomic fetch add
 178 uint8_t cds_atomic_fetch_add8(void* addr, uint8_t val, int atomic_index, const char * position) {
 179         _ATOMIC_RMW_( +=, 8, addr, val, atomic_index, position);
 180 }
 181 uint16_t cds_atomic_fetch_add16(void* addr, uint16_t val, int atomic_index, const char * position) {
 182         _ATOMIC_RMW_( +=, 16, addr, val, atomic_index, position);
 183 }
 184 uint32_t cds_atomic_fetch_add32(void* addr, uint32_t val, int atomic_index, const char * position) {
 185         _ATOMIC_RMW_( +=, 32, addr, val, atomic_index, position);
 186 }
 187 uint64_t cds_atomic_fetch_add64(void* addr, uint64_t val, int atomic_index, const char * position) {
 188         _ATOMIC_RMW_( +=, 64, addr, val, atomic_index, position);
 189 }
 190
 191 // cds atomic fetch sub
 192 uint8_t cds_atomic_fetch_sub8(void* addr, uint8_t val, int atomic_index, const char * position) {
 193         _ATOMIC_RMW_( -=, 8, addr, val, atomic_index, position);
 194 }
 195 uint16_t cds_atomic_fetch_sub16(void* addr, uint16_t val, int atomic_index, const char * position) {
 196         _ATOMIC_RMW_( -=, 16, addr, val, atomic_index, position);
 197 }
 198 uint32_t cds_atomic_fetch_sub32(void* addr, uint32_t val, int atomic_index, const char * position) {
 199         _ATOMIC_RMW_( -=, 32, addr, val, atomic_index, position);
 200 }
 201 uint64_t cds_atomic_fetch_sub64(void* addr, uint64_t val, int atomic_index, const char * position) {
 202         _ATOMIC_RMW_( -=, 64, addr, val, atomic_index, position);
 203 }
 204
 205 // cds atomic fetch and
 206 uint8_t cds_atomic_fetch_and8(void* addr, uint8_t val, int atomic_index, const char * position) {
 207         _ATOMIC_RMW_( &=, 8, addr, val, atomic_index, position);
 208 }
 209 uint16_t cds_atomic_fetch_and16(void* addr, uint16_t val, int atomic_index, const char * position) {
 210         _ATOMIC_RMW_( &=, 16, addr, val, atomic_index, position);
 211 }
 212 uint32_t cds_atomic_fetch_and32(void* addr, uint32_t val, int atomic_index, const char * position) {
 213         _ATOMIC_RMW_( &=, 32, addr, val, atomic_index, position);
 214 }
 215 uint64_t cds_atomic_fetch_and64(void* addr, uint64_t val, int atomic_index, const char * position) {
 216         _ATOMIC_RMW_( &=, 64, addr, val, atomic_index, position);
 217 }
 218
 219 // cds atomic fetch or
 220 uint8_t cds_atomic_fetch_or8(void* addr, uint8_t val, int atomic_index, const char * position) {
 221         _ATOMIC_RMW_( |=, 8, addr, val, atomic_index, position);
 222 }
 223 uint16_t cds_atomic_fetch_or16(void* addr, uint16_t val, int atomic_index, const char * position) {
 224         _ATOMIC_RMW_( |=, 16, addr, val, atomic_index, position);
 225 }
 226 uint32_t cds_atomic_fetch_or32(void* addr, uint32_t val, int atomic_index, const char * position) {
 227         _ATOMIC_RMW_( |=, 32, addr, val, atomic_index, position);
 228 }
 229 uint64_t cds_atomic_fetch_or64(void* addr, uint64_t val, int atomic_index, const char * position) {
 230         _ATOMIC_RMW_( |=, 64, addr, val, atomic_index, position);
 231 }
 232
 233 // cds atomic fetch xor
 234 uint8_t cds_atomic_fetch_xor8(void* addr, uint8_t val, int atomic_index, const char * position) {
 235         _ATOMIC_RMW_( ^=, 8, addr, val, atomic_index, position);
 236 }
 237 uint16_t cds_atomic_fetch_xor16(void* addr, uint16_t val, int atomic_index, const char * position) {
 238         _ATOMIC_RMW_( ^=, 16, addr, val, atomic_index, position);
 239 }
 240 uint32_t cds_atomic_fetch_xor32(void* addr, uint32_t val, int atomic_index, const char * position) {
 241         _ATOMIC_RMW_( ^=, 32, addr, val, atomic_index, position);
 242 }
 243 uint64_t cds_atomic_fetch_xor64(void* addr, uint64_t val, int atomic_index, const char * position) {
 244         _ATOMIC_RMW_( ^=, 64, addr, val, atomic_index, position);
 245 }
 246
 247 // cds atomic compare and exchange
 248 // In order to accomodate the LLVM PASS, the return values are not true or false.
 249
 250 #define _ATOMIC_CMPSWP_WEAK_ _ATOMIC_CMPSWP_
 251 #define _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index, position)                            \
 252         ({                                                                                              \
 253                 uint ## size ## _t _desired = desired;                                                            \
 254                 uint ## size ## _t _expected = expected;                                                          \
 255                 uint ## size ## _t _old = model_rmwrcas_action_helper(addr, atomic_index, _expected, sizeof(_expected), position); \
 256                 if (_old == _expected) {                                                                    \
 257                         model_rmw_action_helper(addr, (uint64_t) _desired, atomic_index, position); return _expected; }      \
 258                 else {                                                                                        \
 259                         model_rmwc_action_helper(addr, atomic_index, position); _expected = _old; return _old; }              \
 260         })
 261
 262 // atomic_compare_exchange version 1: the CmpOperand (corresponds to expected)
 263 // extracted from LLVM IR is an integer type.
 264
 265 uint8_t cds_atomic_compare_exchange8_v1(void* addr, uint8_t expected, uint8_t desired,
 266                                                                                                                                                                 int atomic_index_succ, int atomic_index_fail, const char *position )
 267 {
 268         _ATOMIC_CMPSWP_(8, addr, expected, desired,
 269                                                                         atomic_index_succ, position);
 270 }
 271 uint16_t cds_atomic_compare_exchange16_v1(void* addr, uint16_t expected, uint16_t desired,
 272                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 273 {
 274         _ATOMIC_CMPSWP_(16, addr, expected, desired,
 275                                                                         atomic_index_succ, position);
 276 }
 277 uint32_t cds_atomic_compare_exchange32_v1(void* addr, uint32_t expected, uint32_t desired,
 278                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 279 {
 280         _ATOMIC_CMPSWP_(32, addr, expected, desired,
 281                                                                         atomic_index_succ, position);
 282 }
 283 uint64_t cds_atomic_compare_exchange64_v1(void* addr, uint64_t expected, uint64_t desired,
 284                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 285 {
 286         _ATOMIC_CMPSWP_(64, addr, expected, desired,
 287                                                                         atomic_index_succ, position);
 288 }
 289
 290 // atomic_compare_exchange version 2
 291 bool cds_atomic_compare_exchange8_v2(void* addr, uint8_t* expected, uint8_t desired,
 292                                                                                                                                                  int atomic_index_succ, int atomic_index_fail, const char *position )
 293 {
 294         uint8_t ret = cds_atomic_compare_exchange8_v1(addr, *expected,
 295                                                                                                                                                                                                 desired, atomic_index_succ, atomic_index_fail, position);
 296         if (ret == *expected) return true;
 297         else return false;
 298 }
 299 bool cds_atomic_compare_exchange16_v2(void* addr, uint16_t* expected, uint16_t desired,
 300                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 301 {
 302         uint16_t ret = cds_atomic_compare_exchange16_v1(addr, *expected,
 303                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 304         if (ret == *expected) return true;
 305         else return false;
 306 }
 307 bool cds_atomic_compare_exchange32_v2(void* addr, uint32_t* expected, uint32_t desired,
 308                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 309 {
 310         uint32_t ret = cds_atomic_compare_exchange32_v1(addr, *expected,
 311                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 312         if (ret == *expected) return true;
 313         else return false;
 314 }
 315 bool cds_atomic_compare_exchange64_v2(void* addr, uint64_t* expected, uint64_t desired,
 316                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 317 {
 318         uint64_t ret = cds_atomic_compare_exchange64_v1(addr, *expected,
 319                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 320         if (ret == *expected) return true;
 321         else return false;
 322 }
 323
 324
 325 // cds atomic thread fence
 326
 327 void cds_atomic_thread_fence(int atomic_index, const char * position) {
 328         model->switch_to_master(
 329                 new ModelAction(ATOMIC_FENCE, position, orders[atomic_index], FENCE_LOCATION)
 330                 );
 331 }
 332
 333 /*
 334  #define _ATOMIC_CMPSWP_( __a__, __e__, __m__, __x__ )                         \
 335         ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__);   \
 336                 __typeof__(__e__) __q__ = (__e__);                            \
 337                 __typeof__(__m__) __v__ = (__m__);                            \
 338                 bool __r__;                                                   \
 339                 __typeof__((__a__)->__f__) __t__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
 340                 if (__t__ == * __q__ ) {                                      \
 341                         model_rmw_action((void *)__p__, __x__, (uint64_t) __v__); __r__ = true; } \
 342                 else {  model_rmwc_action((void *)__p__, __x__); *__q__ = __t__;  __r__ = false;} \
 343                 __r__; })
 344
 345  #define _ATOMIC_FENCE_( __x__ ) \
 346         ({ model_fence_action(__x__);})
 347  */
 348
 349 /*
 350
 351  #define _ATOMIC_MODIFY_( __a__, __o__, __m__, __x__ )                         \
 352         ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__);   \
 353         __typeof__((__a__)->__f__) __old__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
 354         __typeof__(__m__) __v__ = (__m__);                                    \
 355         __typeof__((__a__)->__f__) __copy__= __old__;                         \
 356         __copy__ __o__ __v__;                                                 \
 357         model_rmw_action((void *)__p__, __x__, (uint64_t) __copy__);          \
 358         __old__ = __old__;  Silence clang (-Wunused-value)                    \
 359          })
 360  */
 361
 362 void cds_func_entry(const char * funcName) {
 363         Thread * th = thread_current();
 364         printf("thread %d Enter function %s\n", th->get_id(), funcName);
 365 }
 366
 367 void cds_func_exit(const char * funcName) {
 368         Thread * th = thread_current();
 369         printf("thread %d Exit from function %s\n", th->get_id(), funcName);
 370 }