cmodelint.cc

   1 #include <stdio.h>
   2 #include <string>
   3
   4 #include "model.h"
   5 #include "execution.h"
   6 #include "action.h"
   7 #include "history.h"
   8 #include "cmodelint.h"
   9 #include "threads-model.h"
  10
  11 memory_order orders[6] = {
  12         memory_order_relaxed, memory_order_consume, memory_order_acquire,
  13         memory_order_release, memory_order_acq_rel, memory_order_seq_cst
  14 };
  15
  16 /** Performs a read action.*/
  17 uint64_t model_read_action(void * obj, memory_order ord) {
  18         return model->switch_to_master(new ModelAction(ATOMIC_READ, ord, obj));
  19 }
  20
  21 /** Performs a write action.*/
  22 void model_write_action(void * obj, memory_order ord, uint64_t val) {
  23         model->switch_to_master(new ModelAction(ATOMIC_WRITE, ord, obj, val));
  24 }
  25
  26 /** Performs an init action. */
  27 void model_init_action(void * obj, uint64_t val) {
  28         model->switch_to_master(new ModelAction(ATOMIC_INIT, memory_order_relaxed, obj, val));
  29 }
  30
  31 /**
  32  * Performs the read part of a RMW action. The next action must either be the
  33  * write part of the RMW action or an explicit close out of the RMW action w/o
  34  * a write.
  35  */
  36 uint64_t model_rmwr_action(void *obj, memory_order ord) {
  37         return model->switch_to_master(new ModelAction(ATOMIC_RMWR, ord, obj));
  38 }
  39
  40 /**
  41  * Performs the read part of a RMW CAS action. The next action must
  42  * either be the write part of the RMW action or an explicit close out
  43  * of the RMW action w/o a write.
  44  */
  45 uint64_t model_rmwrcas_action(void *obj, memory_order ord, uint64_t oldval, int size) {
  46         return model->switch_to_master(new ModelAction(ATOMIC_RMWRCAS, ord, obj, oldval, size));
  47 }
  48
  49
  50 /** Performs the write part of a RMW action. */
  51 void model_rmw_action(void *obj, memory_order ord, uint64_t val) {
  52         model->switch_to_master(new ModelAction(ATOMIC_RMW, ord, obj, val));
  53 }
  54
  55 /** Closes out a RMW action without doing a write. */
  56 void model_rmwc_action(void *obj, memory_order ord) {
  57         model->switch_to_master(new ModelAction(ATOMIC_RMWC, ord, obj));
  58 }
  59
  60 /** Issues a fence operation. */
  61 void model_fence_action(memory_order ord) {
  62         model->switch_to_master(new ModelAction(ATOMIC_FENCE, ord, FENCE_LOCATION));
  63 }
  64
  65 /* ---  helper functions --- */
  66 uint64_t model_rmwrcas_action_helper(void *obj, int atomic_index, uint64_t oldval, int size, const char *position) {
  67         return model->switch_to_master(
  68                 new ModelAction(ATOMIC_RMWRCAS, position, orders[atomic_index], obj, oldval, size)
  69                 );
  70 }
  71
  72 uint64_t model_rmwr_action_helper(void *obj, int atomic_index, const char *position) {
  73         return model->switch_to_master(
  74                 new ModelAction(ATOMIC_RMWR, position, orders[atomic_index], obj)
  75                 );
  76 }
  77
  78 void model_rmw_action_helper(void *obj, uint64_t val, int atomic_index, const char * position) {
  79         model->switch_to_master(
  80                 new ModelAction(ATOMIC_RMW, position, orders[atomic_index], obj, val)
  81                 );
  82 }
  83
  84 void model_rmwc_action_helper(void *obj, int atomic_index, const char *position) {
  85         model->switch_to_master(
  86                 new ModelAction(ATOMIC_RMWC, position, orders[atomic_index], obj)
  87                 );
  88 }
  89
  90 // cds atomic inits
  91 void cds_atomic_init8(void * obj, uint8_t val, const char * position) {
  92         model->switch_to_master(
  93                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
  94                 );
  95 }
  96 void cds_atomic_init16(void * obj, uint16_t val, const char * position) {
  97         model->switch_to_master(
  98                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
  99                 );
 100 }
 101 void cds_atomic_init32(void * obj, uint32_t val, const char * position) {
 102         model->switch_to_master(
 103                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
 104                 );
 105 }
 106 void cds_atomic_init64(void * obj, uint64_t val, const char * position) {
 107         model->switch_to_master(
 108                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, val)
 109                 );
 110 }
 111
 112
 113 // cds atomic loads
 114 uint8_t cds_atomic_load8(void * obj, int atomic_index, const char * position) {
 115         return (uint8_t) ( model->switch_to_master(
 116                                                                                          new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj))
 117                                                                                  );
 118 }
 119 uint16_t cds_atomic_load16(void * obj, int atomic_index, const char * position) {
 120         return (uint16_t) ( model->switch_to_master(
 121                                                                                                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj))
 122                                                                                         );
 123 }
 124 uint32_t cds_atomic_load32(void * obj, int atomic_index, const char * position) {
 125         return (uint32_t) ( model->switch_to_master(
 126                                                                                                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj))
 127                                                                                         );
 128 }
 129 uint64_t cds_atomic_load64(void * obj, int atomic_index, const char * position) {
 130         return model->switch_to_master(
 131                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj)
 132                 );
 133 }
 134
 135 // cds atomic stores
 136 void cds_atomic_store8(void * obj, uint8_t val, int atomic_index, const char * position) {
 137         model->switch_to_master(
 138                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 139                 );
 140 }
 141 void cds_atomic_store16(void * obj, uint16_t val, int atomic_index, const char * position) {
 142         model->switch_to_master(
 143                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 144                 );
 145 }
 146 void cds_atomic_store32(void * obj, uint32_t val, int atomic_index, const char * position) {
 147         model->switch_to_master(
 148                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 149                 );
 150 }
 151 void cds_atomic_store64(void * obj, uint64_t val, int atomic_index, const char * position) {
 152         model->switch_to_master(
 153                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, val)
 154                 );
 155 }
 156
 157 #define _ATOMIC_RMW_(__op__, size, addr, val, atomic_index, position)            \
 158         ({                                                                      \
 159                 uint ## size ## _t _old = model_rmwr_action_helper(addr, atomic_index, position);   \
 160                 uint ## size ## _t _copy = _old;                                          \
 161                 uint ## size ## _t _val = val;                                            \
 162                 _copy __op__ _val;                                                    \
 163                 model_rmw_action_helper(addr, (uint64_t) _copy, atomic_index, position);        \
 164                 return _old;                                                          \
 165         })
 166
 167 // cds atomic exchange
 168 uint8_t cds_atomic_exchange8(void* addr, uint8_t val, int atomic_index, const char * position) {
 169         _ATOMIC_RMW_( =, 8, addr, val, atomic_index, position);
 170 }
 171 uint16_t cds_atomic_exchange16(void* addr, uint16_t val, int atomic_index, const char * position) {
 172         _ATOMIC_RMW_( =, 16, addr, val, atomic_index, position);
 173 }
 174 uint32_t cds_atomic_exchange32(void* addr, uint32_t val, int atomic_index, const char * position) {
 175         _ATOMIC_RMW_( =, 32, addr, val, atomic_index, position);
 176 }
 177 uint64_t cds_atomic_exchange64(void* addr, uint64_t val, int atomic_index, const char * position) {
 178         _ATOMIC_RMW_( =, 64, addr, val, atomic_index, position);
 179 }
 180
 181 // cds atomic fetch add
 182 uint8_t cds_atomic_fetch_add8(void* addr, uint8_t val, int atomic_index, const char * position) {
 183         _ATOMIC_RMW_( +=, 8, addr, val, atomic_index, position);
 184 }
 185 uint16_t cds_atomic_fetch_add16(void* addr, uint16_t val, int atomic_index, const char * position) {
 186         _ATOMIC_RMW_( +=, 16, addr, val, atomic_index, position);
 187 }
 188 uint32_t cds_atomic_fetch_add32(void* addr, uint32_t val, int atomic_index, const char * position) {
 189         _ATOMIC_RMW_( +=, 32, addr, val, atomic_index, position);
 190 }
 191 uint64_t cds_atomic_fetch_add64(void* addr, uint64_t val, int atomic_index, const char * position) {
 192         _ATOMIC_RMW_( +=, 64, addr, val, atomic_index, position);
 193 }
 194
 195 // cds atomic fetch sub
 196 uint8_t cds_atomic_fetch_sub8(void* addr, uint8_t val, int atomic_index, const char * position) {
 197         _ATOMIC_RMW_( -=, 8, addr, val, atomic_index, position);
 198 }
 199 uint16_t cds_atomic_fetch_sub16(void* addr, uint16_t val, int atomic_index, const char * position) {
 200         _ATOMIC_RMW_( -=, 16, addr, val, atomic_index, position);
 201 }
 202 uint32_t cds_atomic_fetch_sub32(void* addr, uint32_t val, int atomic_index, const char * position) {
 203         _ATOMIC_RMW_( -=, 32, addr, val, atomic_index, position);
 204 }
 205 uint64_t cds_atomic_fetch_sub64(void* addr, uint64_t val, int atomic_index, const char * position) {
 206         _ATOMIC_RMW_( -=, 64, addr, val, atomic_index, position);
 207 }
 208
 209 // cds atomic fetch and
 210 uint8_t cds_atomic_fetch_and8(void* addr, uint8_t val, int atomic_index, const char * position) {
 211         _ATOMIC_RMW_( &=, 8, addr, val, atomic_index, position);
 212 }
 213 uint16_t cds_atomic_fetch_and16(void* addr, uint16_t val, int atomic_index, const char * position) {
 214         _ATOMIC_RMW_( &=, 16, addr, val, atomic_index, position);
 215 }
 216 uint32_t cds_atomic_fetch_and32(void* addr, uint32_t val, int atomic_index, const char * position) {
 217         _ATOMIC_RMW_( &=, 32, addr, val, atomic_index, position);
 218 }
 219 uint64_t cds_atomic_fetch_and64(void* addr, uint64_t val, int atomic_index, const char * position) {
 220         _ATOMIC_RMW_( &=, 64, addr, val, atomic_index, position);
 221 }
 222
 223 // cds atomic fetch or
 224 uint8_t cds_atomic_fetch_or8(void* addr, uint8_t val, int atomic_index, const char * position) {
 225         _ATOMIC_RMW_( |=, 8, addr, val, atomic_index, position);
 226 }
 227 uint16_t cds_atomic_fetch_or16(void* addr, uint16_t val, int atomic_index, const char * position) {
 228         _ATOMIC_RMW_( |=, 16, addr, val, atomic_index, position);
 229 }
 230 uint32_t cds_atomic_fetch_or32(void* addr, uint32_t val, int atomic_index, const char * position) {
 231         _ATOMIC_RMW_( |=, 32, addr, val, atomic_index, position);
 232 }
 233 uint64_t cds_atomic_fetch_or64(void* addr, uint64_t val, int atomic_index, const char * position) {
 234         _ATOMIC_RMW_( |=, 64, addr, val, atomic_index, position);
 235 }
 236
 237 // cds atomic fetch xor
 238 uint8_t cds_atomic_fetch_xor8(void* addr, uint8_t val, int atomic_index, const char * position) {
 239         _ATOMIC_RMW_( ^=, 8, addr, val, atomic_index, position);
 240 }
 241 uint16_t cds_atomic_fetch_xor16(void* addr, uint16_t val, int atomic_index, const char * position) {
 242         _ATOMIC_RMW_( ^=, 16, addr, val, atomic_index, position);
 243 }
 244 uint32_t cds_atomic_fetch_xor32(void* addr, uint32_t val, int atomic_index, const char * position) {
 245         _ATOMIC_RMW_( ^=, 32, addr, val, atomic_index, position);
 246 }
 247 uint64_t cds_atomic_fetch_xor64(void* addr, uint64_t val, int atomic_index, const char * position) {
 248         _ATOMIC_RMW_( ^=, 64, addr, val, atomic_index, position);
 249 }
 250
 251 // cds atomic compare and exchange
 252 // In order to accomodate the LLVM PASS, the return values are not true or false.
 253
 254 #define _ATOMIC_CMPSWP_WEAK_ _ATOMIC_CMPSWP_
 255 #define _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index, position)                            \
 256         ({                                                                                              \
 257                 uint ## size ## _t _desired = desired;                                                            \
 258                 uint ## size ## _t _expected = expected;                                                          \
 259                 uint ## size ## _t _old = model_rmwrcas_action_helper(addr, atomic_index, _expected, sizeof(_expected), position); \
 260                 if (_old == _expected) {                                                                    \
 261                         model_rmw_action_helper(addr, (uint64_t) _desired, atomic_index, position); return _expected; }      \
 262                 else {                                                                                        \
 263                         model_rmwc_action_helper(addr, atomic_index, position); _expected = _old; return _old; }              \
 264         })
 265
 266 // atomic_compare_exchange version 1: the CmpOperand (corresponds to expected)
 267 // extracted from LLVM IR is an integer type.
 268
 269 uint8_t cds_atomic_compare_exchange8_v1(void* addr, uint8_t expected, uint8_t desired,
 270                                                                                                                                                                 int atomic_index_succ, int atomic_index_fail, const char *position )
 271 {
 272         _ATOMIC_CMPSWP_(8, addr, expected, desired,
 273                                                                         atomic_index_succ, position);
 274 }
 275 uint16_t cds_atomic_compare_exchange16_v1(void* addr, uint16_t expected, uint16_t desired,
 276                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 277 {
 278         _ATOMIC_CMPSWP_(16, addr, expected, desired,
 279                                                                         atomic_index_succ, position);
 280 }
 281 uint32_t cds_atomic_compare_exchange32_v1(void* addr, uint32_t expected, uint32_t desired,
 282                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 283 {
 284         _ATOMIC_CMPSWP_(32, addr, expected, desired,
 285                                                                         atomic_index_succ, position);
 286 }
 287 uint64_t cds_atomic_compare_exchange64_v1(void* addr, uint64_t expected, uint64_t desired,
 288                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 289 {
 290         _ATOMIC_CMPSWP_(64, addr, expected, desired,
 291                                                                         atomic_index_succ, position);
 292 }
 293
 294 // atomic_compare_exchange version 2
 295 bool cds_atomic_compare_exchange8_v2(void* addr, uint8_t* expected, uint8_t desired,
 296                                                                                                                                                  int atomic_index_succ, int atomic_index_fail, const char *position )
 297 {
 298         uint8_t ret = cds_atomic_compare_exchange8_v1(addr, *expected,
 299                                                                                                                                                                                                 desired, atomic_index_succ, atomic_index_fail, position);
 300         if (ret == *expected) return true;
 301         else return false;
 302 }
 303 bool cds_atomic_compare_exchange16_v2(void* addr, uint16_t* expected, uint16_t desired,
 304                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 305 {
 306         uint16_t ret = cds_atomic_compare_exchange16_v1(addr, *expected,
 307                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 308         if (ret == *expected) return true;
 309         else return false;
 310 }
 311 bool cds_atomic_compare_exchange32_v2(void* addr, uint32_t* expected, uint32_t desired,
 312                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 313 {
 314         uint32_t ret = cds_atomic_compare_exchange32_v1(addr, *expected,
 315                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 316         if (ret == *expected) return true;
 317         else return false;
 318 }
 319 bool cds_atomic_compare_exchange64_v2(void* addr, uint64_t* expected, uint64_t desired,
 320                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 321 {
 322         uint64_t ret = cds_atomic_compare_exchange64_v1(addr, *expected,
 323                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 324         if (ret == *expected) return true;
 325         else return false;
 326 }
 327
 328
 329 // cds atomic thread fence
 330
 331 void cds_atomic_thread_fence(int atomic_index, const char * position) {
 332         model->switch_to_master(
 333                 new ModelAction(ATOMIC_FENCE, position, orders[atomic_index], FENCE_LOCATION)
 334                 );
 335 }
 336
 337 /*
 338  #define _ATOMIC_CMPSWP_( __a__, __e__, __m__, __x__ )                         \
 339         ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__);   \
 340                 __typeof__(__e__) __q__ = (__e__);                            \
 341                 __typeof__(__m__) __v__ = (__m__);                            \
 342                 bool __r__;                                                   \
 343                 __typeof__((__a__)->__f__) __t__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
 344                 if (__t__ == * __q__ ) {                                      \
 345                         model_rmw_action((void *)__p__, __x__, (uint64_t) __v__); __r__ = true; } \
 346                 else {  model_rmwc_action((void *)__p__, __x__); *__q__ = __t__;  __r__ = false;} \
 347                 __r__; })
 348
 349  #define _ATOMIC_FENCE_( __x__ ) \
 350         ({ model_fence_action(__x__);})
 351  */
 352
 353 /*
 354
 355  #define _ATOMIC_MODIFY_( __a__, __o__, __m__, __x__ )                         \
 356         ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__);   \
 357         __typeof__((__a__)->__f__) __old__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
 358         __typeof__(__m__) __v__ = (__m__);                                    \
 359         __typeof__((__a__)->__f__) __copy__= __old__;                         \
 360         __copy__ __o__ __v__;                                                 \
 361         model_rmw_action((void *)__p__, __x__, (uint64_t) __copy__);          \
 362         __old__ = __old__;  Silence clang (-Wunused-value)                    \
 363          })
 364  */
 365
 366 void cds_func_entry(const char * funcName) {
 367         if (!model) return;
 368
 369         Thread * th = thread_current();
 370         uint32_t func_id;
 371
 372         ModelHistory *history = model->get_history();
 373         if ( !history->getFuncMap()->contains(funcName) ) {
 374                 func_id = history->get_func_counter();
 375                 history->incr_func_counter();
 376
 377                 history->getFuncMap()->put(funcName, func_id);
 378         } else {
 379                 func_id = history->getFuncMap()->get(funcName);
 380         }
 381
 382         history->enter_function(func_id, th->get_id());
 383 }
 384
 385 void cds_func_exit(const char * funcName) {
 386         if (!model) return;
 387
 388         Thread * th = thread_current();
 389         uint32_t func_id;
 390
 391         ModelHistory *history = model->get_history();
 392         func_id = history->getFuncMap()->get(funcName);
 393
 394         history->exit_function(func_id, th->get_id());
 395 }