9 #include "snapshot-interface.h"
10 #include "threads-model.h"
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
17 static void ensureModel() {
19 snapshot_system_init(10000, 1024, 1024, 40000);
20 model = new ModelChecker();
21 model->startChecker();
25 /** Performs a read action.*/
26 uint64_t model_read_action(void * obj, memory_order ord) {
27 return model->switch_to_master(new ModelAction(ATOMIC_READ, ord, obj));
30 /** Performs a write action.*/
31 void model_write_action(void * obj, memory_order ord, uint64_t val) {
32 model->switch_to_master(new ModelAction(ATOMIC_WRITE, ord, obj, val));
35 /** Performs an init action. */
36 void model_init_action(void * obj, uint64_t val) {
37 model->switch_to_master(new ModelAction(ATOMIC_INIT, memory_order_relaxed, obj, val));
41 * Performs the read part of a RMW action. The next action must either be the
42 * write part of the RMW action or an explicit close out of the RMW action w/o
45 uint64_t model_rmwr_action(void *obj, memory_order ord) {
46 return model->switch_to_master(new ModelAction(ATOMIC_RMWR, ord, obj));
50 * Performs the read part of a RMW CAS action. The next action must
51 * either be the write part of the RMW action or an explicit close out
52 * of the RMW action w/o a write.
54 uint64_t model_rmwrcas_action(void *obj, memory_order ord, uint64_t oldval, int size) {
55 return model->switch_to_master(new ModelAction(ATOMIC_RMWRCAS, ord, obj, oldval, size));
59 /** Performs the write part of a RMW action. */
60 void model_rmw_action(void *obj, memory_order ord, uint64_t val) {
61 model->switch_to_master(new ModelAction(ATOMIC_RMW, ord, obj, val));
64 /** Closes out a RMW action without doing a write. */
65 void model_rmwc_action(void *obj, memory_order ord) {
66 model->switch_to_master(new ModelAction(ATOMIC_RMWC, ord, obj));
69 /** Issues a fence operation. */
70 void model_fence_action(memory_order ord) {
71 model->switch_to_master(new ModelAction(ATOMIC_FENCE, ord, FENCE_LOCATION));
74 /* --- helper functions --- */
75 uint64_t model_rmwrcas_action_helper(void *obj, int atomic_index, uint64_t oldval, int size, const char *position) {
77 return model->switch_to_master(new ModelAction(ATOMIC_RMWRCAS, position, orders[atomic_index], obj, oldval, size));
80 uint64_t model_rmwr_action_helper(void *obj, int atomic_index, const char *position) {
82 return model->switch_to_master(new ModelAction(ATOMIC_RMWR, position, orders[atomic_index], obj));
85 void model_rmw_action_helper(void *obj, uint64_t val, int atomic_index, const char * position) {
87 model->switch_to_master(new ModelAction(ATOMIC_RMW, position, orders[atomic_index], obj, val));
90 void model_rmwc_action_helper(void *obj, int atomic_index, const char *position) {
92 model->switch_to_master(new ModelAction(ATOMIC_RMWC, position, orders[atomic_index], obj));
96 void cds_atomic_init8(void * obj, uint8_t val, const char * position) {
98 model->switch_to_master(new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val));
100 void cds_atomic_init16(void * obj, uint16_t val, const char * position) {
102 model->switch_to_master(new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val));
104 void cds_atomic_init32(void * obj, uint32_t val, const char * position) {
106 model->switch_to_master(new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val));
108 void cds_atomic_init64(void * obj, uint64_t val, const char * position) {
110 model->switch_to_master(new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, val));
115 uint8_t cds_atomic_load8(void * obj, int atomic_index, const char * position) {
117 return (uint8_t) model->switch_to_master(
118 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj));
120 uint16_t cds_atomic_load16(void * obj, int atomic_index, const char * position) {
122 return (uint16_t) model->switch_to_master(
123 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj));
125 uint32_t cds_atomic_load32(void * obj, int atomic_index, const char * position) {
127 return (uint32_t) model->switch_to_master(
128 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj)
131 uint64_t cds_atomic_load64(void * obj, int atomic_index, const char * position) {
133 return model->switch_to_master(
134 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj));
138 void cds_atomic_store8(void * obj, uint8_t val, int atomic_index, const char * position) {
140 model->switch_to_master(new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val));
142 void cds_atomic_store16(void * obj, uint16_t val, int atomic_index, const char * position) {
144 model->switch_to_master(new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val));
146 void cds_atomic_store32(void * obj, uint32_t val, int atomic_index, const char * position) {
148 model->switch_to_master(new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val));
150 void cds_atomic_store64(void * obj, uint64_t val, int atomic_index, const char * position) {
152 model->switch_to_master(new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val));
155 #define _ATOMIC_RMW_(__op__, size, addr, val, atomic_index, position) \
157 uint ## size ## _t _old = model_rmwr_action_helper(addr, atomic_index, position); \
158 uint ## size ## _t _copy = _old; \
159 uint ## size ## _t _val = val; \
161 model_rmw_action_helper(addr, (uint64_t) _copy, atomic_index, position); \
165 // cds atomic exchange
166 uint8_t cds_atomic_exchange8(void* addr, uint8_t val, int atomic_index, const char * position) {
167 _ATOMIC_RMW_( =, 8, addr, val, atomic_index, position);
169 uint16_t cds_atomic_exchange16(void* addr, uint16_t val, int atomic_index, const char * position) {
170 _ATOMIC_RMW_( =, 16, addr, val, atomic_index, position);
172 uint32_t cds_atomic_exchange32(void* addr, uint32_t val, int atomic_index, const char * position) {
173 _ATOMIC_RMW_( =, 32, addr, val, atomic_index, position);
175 uint64_t cds_atomic_exchange64(void* addr, uint64_t val, int atomic_index, const char * position) {
176 _ATOMIC_RMW_( =, 64, addr, val, atomic_index, position);
179 // cds atomic fetch add
180 uint8_t cds_atomic_fetch_add8(void* addr, uint8_t val, int atomic_index, const char * position) {
181 _ATOMIC_RMW_( +=, 8, addr, val, atomic_index, position);
183 uint16_t cds_atomic_fetch_add16(void* addr, uint16_t val, int atomic_index, const char * position) {
184 _ATOMIC_RMW_( +=, 16, addr, val, atomic_index, position);
186 uint32_t cds_atomic_fetch_add32(void* addr, uint32_t val, int atomic_index, const char * position) {
187 _ATOMIC_RMW_( +=, 32, addr, val, atomic_index, position);
189 uint64_t cds_atomic_fetch_add64(void* addr, uint64_t val, int atomic_index, const char * position) {
190 _ATOMIC_RMW_( +=, 64, addr, val, atomic_index, position);
193 // cds atomic fetch sub
194 uint8_t cds_atomic_fetch_sub8(void* addr, uint8_t val, int atomic_index, const char * position) {
195 _ATOMIC_RMW_( -=, 8, addr, val, atomic_index, position);
197 uint16_t cds_atomic_fetch_sub16(void* addr, uint16_t val, int atomic_index, const char * position) {
198 _ATOMIC_RMW_( -=, 16, addr, val, atomic_index, position);
200 uint32_t cds_atomic_fetch_sub32(void* addr, uint32_t val, int atomic_index, const char * position) {
201 _ATOMIC_RMW_( -=, 32, addr, val, atomic_index, position);
203 uint64_t cds_atomic_fetch_sub64(void* addr, uint64_t val, int atomic_index, const char * position) {
204 _ATOMIC_RMW_( -=, 64, addr, val, atomic_index, position);
207 // cds atomic fetch and
208 uint8_t cds_atomic_fetch_and8(void* addr, uint8_t val, int atomic_index, const char * position) {
209 _ATOMIC_RMW_( &=, 8, addr, val, atomic_index, position);
211 uint16_t cds_atomic_fetch_and16(void* addr, uint16_t val, int atomic_index, const char * position) {
212 _ATOMIC_RMW_( &=, 16, addr, val, atomic_index, position);
214 uint32_t cds_atomic_fetch_and32(void* addr, uint32_t val, int atomic_index, const char * position) {
215 _ATOMIC_RMW_( &=, 32, addr, val, atomic_index, position);
217 uint64_t cds_atomic_fetch_and64(void* addr, uint64_t val, int atomic_index, const char * position) {
218 _ATOMIC_RMW_( &=, 64, addr, val, atomic_index, position);
221 // cds atomic fetch or
222 uint8_t cds_atomic_fetch_or8(void* addr, uint8_t val, int atomic_index, const char * position) {
223 _ATOMIC_RMW_( |=, 8, addr, val, atomic_index, position);
225 uint16_t cds_atomic_fetch_or16(void* addr, uint16_t val, int atomic_index, const char * position) {
226 _ATOMIC_RMW_( |=, 16, addr, val, atomic_index, position);
228 uint32_t cds_atomic_fetch_or32(void* addr, uint32_t val, int atomic_index, const char * position) {
229 _ATOMIC_RMW_( |=, 32, addr, val, atomic_index, position);
231 uint64_t cds_atomic_fetch_or64(void* addr, uint64_t val, int atomic_index, const char * position) {
232 _ATOMIC_RMW_( |=, 64, addr, val, atomic_index, position);
235 // cds atomic fetch xor
236 uint8_t cds_atomic_fetch_xor8(void* addr, uint8_t val, int atomic_index, const char * position) {
237 _ATOMIC_RMW_( ^=, 8, addr, val, atomic_index, position);
239 uint16_t cds_atomic_fetch_xor16(void* addr, uint16_t val, int atomic_index, const char * position) {
240 _ATOMIC_RMW_( ^=, 16, addr, val, atomic_index, position);
242 uint32_t cds_atomic_fetch_xor32(void* addr, uint32_t val, int atomic_index, const char * position) {
243 _ATOMIC_RMW_( ^=, 32, addr, val, atomic_index, position);
245 uint64_t cds_atomic_fetch_xor64(void* addr, uint64_t val, int atomic_index, const char * position) {
246 _ATOMIC_RMW_( ^=, 64, addr, val, atomic_index, position);
249 // cds atomic compare and exchange
250 // In order to accomodate the LLVM PASS, the return values are not true or false.
252 #define _ATOMIC_CMPSWP_WEAK_ _ATOMIC_CMPSWP_
253 #define _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index, position) \
255 uint ## size ## _t _desired = desired; \
256 uint ## size ## _t _expected = expected; \
257 uint ## size ## _t _old = model_rmwrcas_action_helper(addr, atomic_index, _expected, sizeof(_expected), position); \
258 if (_old == _expected) { \
259 model_rmw_action_helper(addr, (uint64_t) _desired, atomic_index, position); return _expected; } \
261 model_rmwc_action_helper(addr, atomic_index, position); _expected = _old; return _old; } \
264 // atomic_compare_exchange version 1: the CmpOperand (corresponds to expected)
265 // extracted from LLVM IR is an integer type.
267 uint8_t cds_atomic_compare_exchange8_v1(void* addr, uint8_t expected, uint8_t desired,
268 int atomic_index_succ, int atomic_index_fail, const char *position )
270 _ATOMIC_CMPSWP_(8, addr, expected, desired,
271 atomic_index_succ, position);
273 uint16_t cds_atomic_compare_exchange16_v1(void* addr, uint16_t expected, uint16_t desired,
274 int atomic_index_succ, int atomic_index_fail, const char *position)
276 _ATOMIC_CMPSWP_(16, addr, expected, desired,
277 atomic_index_succ, position);
279 uint32_t cds_atomic_compare_exchange32_v1(void* addr, uint32_t expected, uint32_t desired,
280 int atomic_index_succ, int atomic_index_fail, const char *position)
282 _ATOMIC_CMPSWP_(32, addr, expected, desired,
283 atomic_index_succ, position);
285 uint64_t cds_atomic_compare_exchange64_v1(void* addr, uint64_t expected, uint64_t desired,
286 int atomic_index_succ, int atomic_index_fail, const char *position)
288 _ATOMIC_CMPSWP_(64, addr, expected, desired,
289 atomic_index_succ, position);
292 // atomic_compare_exchange version 2
293 bool cds_atomic_compare_exchange8_v2(void* addr, uint8_t* expected, uint8_t desired,
294 int atomic_index_succ, int atomic_index_fail, const char *position )
296 uint8_t ret = cds_atomic_compare_exchange8_v1(addr, *expected,
297 desired, atomic_index_succ, atomic_index_fail, position);
298 if (ret == *expected) return true;
301 bool cds_atomic_compare_exchange16_v2(void* addr, uint16_t* expected, uint16_t desired,
302 int atomic_index_succ, int atomic_index_fail, const char *position)
304 uint16_t ret = cds_atomic_compare_exchange16_v1(addr, *expected,
305 desired, atomic_index_succ, atomic_index_fail, position);
306 if (ret == *expected) return true;
309 bool cds_atomic_compare_exchange32_v2(void* addr, uint32_t* expected, uint32_t desired,
310 int atomic_index_succ, int atomic_index_fail, const char *position)
312 uint32_t ret = cds_atomic_compare_exchange32_v1(addr, *expected,
313 desired, atomic_index_succ, atomic_index_fail, position);
314 if (ret == *expected) return true;
317 bool cds_atomic_compare_exchange64_v2(void* addr, uint64_t* expected, uint64_t desired,
318 int atomic_index_succ, int atomic_index_fail, const char *position)
320 uint64_t ret = cds_atomic_compare_exchange64_v1(addr, *expected,
321 desired, atomic_index_succ, atomic_index_fail, position);
322 if (ret == *expected) return true;
327 // cds atomic thread fence
329 void cds_atomic_thread_fence(int atomic_index, const char * position) {
330 model->switch_to_master(
331 new ModelAction(ATOMIC_FENCE, position, orders[atomic_index], FENCE_LOCATION)
336 #define _ATOMIC_CMPSWP_( __a__, __e__, __m__, __x__ ) \
337 ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__); \
338 __typeof__(__e__) __q__ = (__e__); \
339 __typeof__(__m__) __v__ = (__m__); \
341 __typeof__((__a__)->__f__) __t__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
342 if (__t__ == * __q__ ) { \
343 model_rmw_action((void *)__p__, __x__, (uint64_t) __v__); __r__ = true; } \
344 else { model_rmwc_action((void *)__p__, __x__); *__q__ = __t__; __r__ = false;} \
347 #define _ATOMIC_FENCE_( __x__ ) \
348 ({ model_fence_action(__x__);})
353 #define _ATOMIC_MODIFY_( __a__, __o__, __m__, __x__ ) \
354 ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__); \
355 __typeof__((__a__)->__f__) __old__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
356 __typeof__(__m__) __v__ = (__m__); \
357 __typeof__((__a__)->__f__) __copy__= __old__; \
358 __copy__ __o__ __v__; \
359 model_rmw_action((void *)__p__, __x__, (uint64_t) __copy__); \
360 __old__ = __old__; Silence clang (-Wunused-value) \
364 void cds_func_entry(const char * funcName) {
367 Thread * th = thread_current();
370 ModelHistory *history = model->get_history();
371 if ( !history->getFuncMap()->contains(funcName) ) {
372 func_id = history->get_func_counter();
373 history->incr_func_counter();
375 history->getFuncMap()->put(funcName, func_id);
377 func_id = history->getFuncMap()->get(funcName);
380 history->enter_function(func_id, th->get_id());
383 void cds_func_exit(const char * funcName) {
386 Thread * th = thread_current();
389 ModelHistory *history = model->get_history();
390 func_id = history->getFuncMap()->get(funcName);
392 history->exit_function(func_id, th->get_id());