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 "snapshot-interface.h"
  10 #include "threads-model.h"
  11
  12 memory_order orders[6] = {
  13         memory_order_relaxed, memory_order_consume, memory_order_acquire,
  14         memory_order_release, memory_order_acq_rel, memory_order_seq_cst
  15 };
  16
  17 #define ensureModel(action) \
  18         if (!modelchecker_started) {                  \
  19                 if (!model) { \
  20                         snapshot_system_init(10000, 1024, 1024, 40000); \
  21                         model = new ModelChecker(); \
  22                 } \
  23                 model->get_execution()->check_current_action(action); \
  24         }else { \
  25                 model->switch_to_master(action); \
  26         }
  27
  28
  29 #define ensureModelValue(action, type)          \
  30         if (!modelchecker_started) { \
  31                 if (!model) { \
  32                         snapshot_system_init(10000, 1024, 1024, 40000); \
  33                         model = new ModelChecker(); \
  34                 } \
  35                 model->get_execution()->check_current_action(action); \
  36                 return (type) thread_current()->get_return_value();   \
  37         } else { \
  38                 return (type) model->switch_to_master(action);        \
  39         }
  40
  41 /** Performs a read action.*/
  42 uint64_t model_read_action(void * obj, memory_order ord) {
  43         return model->switch_to_master(new ModelAction(ATOMIC_READ, ord, obj));
  44 }
  45
  46 /** Performs a write action.*/
  47 void model_write_action(void * obj, memory_order ord, uint64_t val) {
  48         model->switch_to_master(new ModelAction(ATOMIC_WRITE, ord, obj, val));
  49 }
  50
  51 /** Performs an init action. */
  52 void model_init_action(void * obj, uint64_t val) {
  53         model->switch_to_master(new ModelAction(ATOMIC_INIT, memory_order_relaxed, obj, val));
  54 }
  55
  56 /**
  57  * Performs the read part of a RMW action. The next action must either be the
  58  * write part of the RMW action or an explicit close out of the RMW action w/o
  59  * a write.
  60  */
  61 uint64_t model_rmwr_action(void *obj, memory_order ord) {
  62         return model->switch_to_master(new ModelAction(ATOMIC_RMWR, ord, obj));
  63 }
  64
  65 /**
  66  * Performs the read part of a RMW CAS action. The next action must
  67  * either be the write part of the RMW action or an explicit close out
  68  * of the RMW action w/o a write.
  69  */
  70 uint64_t model_rmwrcas_action(void *obj, memory_order ord, uint64_t oldval, int size) {
  71         return model->switch_to_master(new ModelAction(ATOMIC_RMWRCAS, ord, obj, oldval, size));
  72 }
  73
  74
  75 /** Performs the write part of a RMW action. */
  76 void model_rmw_action(void *obj, memory_order ord, uint64_t val) {
  77         model->switch_to_master(new ModelAction(ATOMIC_RMW, ord, obj, val));
  78 }
  79
  80 /** Closes out a RMW action without doing a write. */
  81 void model_rmwc_action(void *obj, memory_order ord) {
  82         model->switch_to_master(new ModelAction(ATOMIC_RMWC, ord, obj));
  83 }
  84
  85 /** Issues a fence operation. */
  86 void model_fence_action(memory_order ord) {
  87         model->switch_to_master(new ModelAction(ATOMIC_FENCE, ord, FENCE_LOCATION));
  88 }
  89
  90 /* ---  helper functions --- */
  91 uint64_t model_rmwrcas_action_helper(void *obj, int atomic_index, uint64_t oldval, int size, const char *position) {
  92         ensureModelValue(
  93                 new ModelAction(ATOMIC_RMWRCAS, position, orders[atomic_index], obj, oldval, size), uint64_t
  94                 );
  95 }
  96
  97 uint64_t model_rmwr_action_helper(void *obj, int atomic_index, const char *position) {
  98         ensureModelValue(new ModelAction(ATOMIC_RMWR, position, orders[atomic_index], obj), uint64_t);
  99 }
 100
 101 void model_rmw_action_helper(void *obj, uint64_t val, int atomic_index, const char * position) {
 102         ensureModel(new ModelAction(ATOMIC_RMW, position, orders[atomic_index], obj, val));
 103 }
 104
 105 void model_rmwc_action_helper(void *obj, int atomic_index, const char *position) {
 106         ensureModel(new ModelAction(ATOMIC_RMWC, position, orders[atomic_index], obj));
 107 }
 108
 109 // cds atomic inits
 110 void cds_atomic_init8(void * obj, uint8_t val, const char * position) {
 111         ensureModel(
 112                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
 113                 );
 114 }
 115 void cds_atomic_init16(void * obj, uint16_t val, const char * position) {
 116         ensureModel(
 117                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
 118                 );
 119 }
 120 void cds_atomic_init32(void * obj, uint32_t val, const char * position) {
 121         ensureModel(
 122                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
 123                 );
 124 }
 125 void cds_atomic_init64(void * obj, uint64_t val, const char * position) {
 126         ensureModel(
 127                 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, val)
 128                 );
 129 }
 130
 131
 132 // cds atomic loads
 133 uint8_t cds_atomic_load8(void * obj, int atomic_index, const char * position) {
 134         ensureModelValue(
 135                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj), uint8_t);
 136 }
 137 uint16_t cds_atomic_load16(void * obj, int atomic_index, const char * position) {
 138         ensureModelValue(
 139                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj), uint16_t);
 140 }
 141 uint32_t cds_atomic_load32(void * obj, int atomic_index, const char * position) {
 142         ensureModelValue(
 143                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj), uint32_t
 144                 );
 145 }
 146 uint64_t cds_atomic_load64(void * obj, int atomic_index, const char * position) {
 147         ensureModelValue(
 148                 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj), uint64_t);
 149 }
 150
 151 // cds atomic stores
 152 void cds_atomic_store8(void * obj, uint8_t val, int atomic_index, const char * position) {
 153         ensureModel(
 154                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 155                 );
 156 }
 157 void cds_atomic_store16(void * obj, uint16_t val, int atomic_index, const char * position) {
 158         ensureModel(
 159                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 160                 );
 161 }
 162 void cds_atomic_store32(void * obj, uint32_t val, int atomic_index, const char * position) {
 163         ensureModel(
 164                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
 165                 );
 166 }
 167 void cds_atomic_store64(void * obj, uint64_t val, int atomic_index, const char * position) {
 168         ensureModel(
 169                 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, val)
 170                 );
 171 }
 172
 173 #define _ATOMIC_RMW_(__op__, size, addr, val, atomic_index, position)            \
 174         ({                                                                      \
 175                 uint ## size ## _t _old = model_rmwr_action_helper(addr, atomic_index, position);   \
 176                 uint ## size ## _t _copy = _old;                                          \
 177                 uint ## size ## _t _val = val;                                            \
 178                 _copy __op__ _val;                                                    \
 179                 model_rmw_action_helper(addr, (uint64_t) _copy, atomic_index, position);        \
 180                 return _old;                                                          \
 181         })
 182
 183 // cds atomic exchange
 184 uint8_t cds_atomic_exchange8(void* addr, uint8_t val, int atomic_index, const char * position) {
 185         _ATOMIC_RMW_( =, 8, addr, val, atomic_index, position);
 186 }
 187 uint16_t cds_atomic_exchange16(void* addr, uint16_t val, int atomic_index, const char * position) {
 188         _ATOMIC_RMW_( =, 16, addr, val, atomic_index, position);
 189 }
 190 uint32_t cds_atomic_exchange32(void* addr, uint32_t val, int atomic_index, const char * position) {
 191         _ATOMIC_RMW_( =, 32, addr, val, atomic_index, position);
 192 }
 193 uint64_t cds_atomic_exchange64(void* addr, uint64_t val, int atomic_index, const char * position) {
 194         _ATOMIC_RMW_( =, 64, addr, val, atomic_index, position);
 195 }
 196
 197 // cds atomic fetch add
 198 uint8_t cds_atomic_fetch_add8(void* addr, uint8_t val, int atomic_index, const char * position) {
 199         _ATOMIC_RMW_( +=, 8, addr, val, atomic_index, position);
 200 }
 201 uint16_t cds_atomic_fetch_add16(void* addr, uint16_t val, int atomic_index, const char * position) {
 202         _ATOMIC_RMW_( +=, 16, addr, val, atomic_index, position);
 203 }
 204 uint32_t cds_atomic_fetch_add32(void* addr, uint32_t val, int atomic_index, const char * position) {
 205         _ATOMIC_RMW_( +=, 32, addr, val, atomic_index, position);
 206 }
 207 uint64_t cds_atomic_fetch_add64(void* addr, uint64_t val, int atomic_index, const char * position) {
 208         _ATOMIC_RMW_( +=, 64, addr, val, atomic_index, position);
 209 }
 210
 211 // cds atomic fetch sub
 212 uint8_t cds_atomic_fetch_sub8(void* addr, uint8_t val, int atomic_index, const char * position) {
 213         _ATOMIC_RMW_( -=, 8, addr, val, atomic_index, position);
 214 }
 215 uint16_t cds_atomic_fetch_sub16(void* addr, uint16_t val, int atomic_index, const char * position) {
 216         _ATOMIC_RMW_( -=, 16, addr, val, atomic_index, position);
 217 }
 218 uint32_t cds_atomic_fetch_sub32(void* addr, uint32_t val, int atomic_index, const char * position) {
 219         _ATOMIC_RMW_( -=, 32, addr, val, atomic_index, position);
 220 }
 221 uint64_t cds_atomic_fetch_sub64(void* addr, uint64_t val, int atomic_index, const char * position) {
 222         _ATOMIC_RMW_( -=, 64, addr, val, atomic_index, position);
 223 }
 224
 225 // cds atomic fetch and
 226 uint8_t cds_atomic_fetch_and8(void* addr, uint8_t val, int atomic_index, const char * position) {
 227         _ATOMIC_RMW_( &=, 8, addr, val, atomic_index, position);
 228 }
 229 uint16_t cds_atomic_fetch_and16(void* addr, uint16_t val, int atomic_index, const char * position) {
 230         _ATOMIC_RMW_( &=, 16, addr, val, atomic_index, position);
 231 }
 232 uint32_t cds_atomic_fetch_and32(void* addr, uint32_t val, int atomic_index, const char * position) {
 233         _ATOMIC_RMW_( &=, 32, addr, val, atomic_index, position);
 234 }
 235 uint64_t cds_atomic_fetch_and64(void* addr, uint64_t val, int atomic_index, const char * position) {
 236         _ATOMIC_RMW_( &=, 64, addr, val, atomic_index, position);
 237 }
 238
 239 // cds atomic fetch or
 240 uint8_t cds_atomic_fetch_or8(void* addr, uint8_t val, int atomic_index, const char * position) {
 241         _ATOMIC_RMW_( |=, 8, addr, val, atomic_index, position);
 242 }
 243 uint16_t cds_atomic_fetch_or16(void* addr, uint16_t val, int atomic_index, const char * position) {
 244         _ATOMIC_RMW_( |=, 16, addr, val, atomic_index, position);
 245 }
 246 uint32_t cds_atomic_fetch_or32(void* addr, uint32_t val, int atomic_index, const char * position) {
 247         _ATOMIC_RMW_( |=, 32, addr, val, atomic_index, position);
 248 }
 249 uint64_t cds_atomic_fetch_or64(void* addr, uint64_t val, int atomic_index, const char * position) {
 250         _ATOMIC_RMW_( |=, 64, addr, val, atomic_index, position);
 251 }
 252
 253 // cds atomic fetch xor
 254 uint8_t cds_atomic_fetch_xor8(void* addr, uint8_t val, int atomic_index, const char * position) {
 255         _ATOMIC_RMW_( ^=, 8, addr, val, atomic_index, position);
 256 }
 257 uint16_t cds_atomic_fetch_xor16(void* addr, uint16_t val, int atomic_index, const char * position) {
 258         _ATOMIC_RMW_( ^=, 16, addr, val, atomic_index, position);
 259 }
 260 uint32_t cds_atomic_fetch_xor32(void* addr, uint32_t val, int atomic_index, const char * position) {
 261         _ATOMIC_RMW_( ^=, 32, addr, val, atomic_index, position);
 262 }
 263 uint64_t cds_atomic_fetch_xor64(void* addr, uint64_t val, int atomic_index, const char * position) {
 264         _ATOMIC_RMW_( ^=, 64, addr, val, atomic_index, position);
 265 }
 266
 267 // cds atomic compare and exchange
 268 // In order to accomodate the LLVM PASS, the return values are not true or false.
 269
 270 #define _ATOMIC_CMPSWP_WEAK_ _ATOMIC_CMPSWP_
 271 #define _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index, position)                            \
 272         ({                                                                                              \
 273                 uint ## size ## _t _desired = desired;                                                            \
 274                 uint ## size ## _t _expected = expected;                                                          \
 275                 uint ## size ## _t _old = model_rmwrcas_action_helper(addr, atomic_index, _expected, sizeof(_expected), position); \
 276                 if (_old == _expected) {                                                                    \
 277                         model_rmw_action_helper(addr, (uint64_t) _desired, atomic_index, position); return _expected; }      \
 278                 else {                                                                                        \
 279                         model_rmwc_action_helper(addr, atomic_index, position); _expected = _old; return _old; }              \
 280         })
 281
 282 // atomic_compare_exchange version 1: the CmpOperand (corresponds to expected)
 283 // extracted from LLVM IR is an integer type.
 284
 285 uint8_t cds_atomic_compare_exchange8_v1(void* addr, uint8_t expected, uint8_t desired,
 286                                                                                                                                                                 int atomic_index_succ, int atomic_index_fail, const char *position )
 287 {
 288         _ATOMIC_CMPSWP_(8, addr, expected, desired,
 289                                                                         atomic_index_succ, position);
 290 }
 291 uint16_t cds_atomic_compare_exchange16_v1(void* addr, uint16_t expected, uint16_t desired,
 292                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 293 {
 294         _ATOMIC_CMPSWP_(16, addr, expected, desired,
 295                                                                         atomic_index_succ, position);
 296 }
 297 uint32_t cds_atomic_compare_exchange32_v1(void* addr, uint32_t expected, uint32_t desired,
 298                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 299 {
 300         _ATOMIC_CMPSWP_(32, addr, expected, desired,
 301                                                                         atomic_index_succ, position);
 302 }
 303 uint64_t cds_atomic_compare_exchange64_v1(void* addr, uint64_t expected, uint64_t desired,
 304                                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 305 {
 306         _ATOMIC_CMPSWP_(64, addr, expected, desired,
 307                                                                         atomic_index_succ, position);
 308 }
 309
 310 // atomic_compare_exchange version 2
 311 bool cds_atomic_compare_exchange8_v2(void* addr, uint8_t* expected, uint8_t desired,
 312                                                                                                                                                  int atomic_index_succ, int atomic_index_fail, const char *position )
 313 {
 314         uint8_t ret = cds_atomic_compare_exchange8_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_exchange16_v2(void* addr, uint16_t* expected, uint16_t desired,
 320                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 321 {
 322         uint16_t ret = cds_atomic_compare_exchange16_v1(addr, *expected,
 323                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 324         if (ret == *expected) return true;
 325         else return false;
 326 }
 327 bool cds_atomic_compare_exchange32_v2(void* addr, uint32_t* expected, uint32_t desired,
 328                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 329 {
 330         uint32_t ret = cds_atomic_compare_exchange32_v1(addr, *expected,
 331                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 332         if (ret == *expected) return true;
 333         else return false;
 334 }
 335 bool cds_atomic_compare_exchange64_v2(void* addr, uint64_t* expected, uint64_t desired,
 336                                                                                                                                                         int atomic_index_succ, int atomic_index_fail, const char *position)
 337 {
 338         uint64_t ret = cds_atomic_compare_exchange64_v1(addr, *expected,
 339                                                                                                                                                                                                         desired, atomic_index_succ, atomic_index_fail, position);
 340         if (ret == *expected) return true;
 341         else return false;
 342 }
 343
 344
 345 // cds atomic thread fence
 346
 347 void cds_atomic_thread_fence(int atomic_index, const char * position) {
 348         model->switch_to_master(
 349                 new ModelAction(ATOMIC_FENCE, position, orders[atomic_index], FENCE_LOCATION)
 350                 );
 351 }
 352
 353 /*
 354  #define _ATOMIC_CMPSWP_( __a__, __e__, __m__, __x__ )                         \
 355         ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__);   \
 356                 __typeof__(__e__) __q__ = (__e__);                            \
 357                 __typeof__(__m__) __v__ = (__m__);                            \
 358                 bool __r__;                                                   \
 359                 __typeof__((__a__)->__f__) __t__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
 360                 if (__t__ == * __q__ ) {                                      \
 361                         model_rmw_action((void *)__p__, __x__, (uint64_t) __v__); __r__ = true; } \
 362                 else {  model_rmwc_action((void *)__p__, __x__); *__q__ = __t__;  __r__ = false;} \
 363                 __r__; })
 364
 365  #define _ATOMIC_FENCE_( __x__ ) \
 366         ({ model_fence_action(__x__);})
 367  */
 368
 369 /*
 370
 371  #define _ATOMIC_MODIFY_( __a__, __o__, __m__, __x__ )                         \
 372         ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__);   \
 373         __typeof__((__a__)->__f__) __old__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
 374         __typeof__(__m__) __v__ = (__m__);                                    \
 375         __typeof__((__a__)->__f__) __copy__= __old__;                         \
 376         __copy__ __o__ __v__;                                                 \
 377         model_rmw_action((void *)__p__, __x__, (uint64_t) __copy__);          \
 378         __old__ = __old__;  Silence clang (-Wunused-value)                    \
 379          })
 380  */
 381
 382 void cds_func_entry(const char * funcName) {
 383         if (!model) return;
 384
 385         Thread * th = thread_current();
 386         uint32_t func_id;
 387
 388         ModelHistory *history = model->get_history();
 389         if ( !history->getFuncMap()->contains(funcName) ) {
 390                 func_id = history->get_func_counter();
 391                 history->incr_func_counter();
 392
 393                 history->getFuncMap()->put(funcName, func_id);
 394         } else {
 395                 func_id = history->getFuncMap()->get(funcName);
 396         }
 397
 398         history->enter_function(func_id, th->get_id());
 399 }
 400
 401 void cds_func_exit(const char * funcName) {
 402         if (!model) return;
 403
 404         Thread * th = thread_current();
 405         uint32_t func_id;
 406
 407         ModelHistory *history = model->get_history();
 408         func_id = history->getFuncMap()->get(funcName);
 409
 410         history->exit_function(func_id, th->get_id());
 411 }