6 #include "snapshot-interface.h"
7 #include "threads-model.h"
9 memory_order orders[6] = {
10 memory_order_relaxed, memory_order_consume, memory_order_acquire,
11 memory_order_release, memory_order_acq_rel, memory_order_seq_cst
14 static void ensureModel(ModelAction * action) {
15 if (!modelchecker_started) {
17 snapshot_system_init(10000, 1024, 1024, 40000);
18 model = new ModelChecker();
20 model->get_execution()->check_current_action(action);
22 model->switch_to_master(action);
26 static uint64_t ensureModelValue(ModelAction * action) {
27 if (!modelchecker_started) {
29 snapshot_system_init(10000, 1024, 1024, 40000);
30 model = new ModelChecker();
32 model->get_execution()->check_current_action(action);
33 return thread_current()->get_return_value();
35 return model->switch_to_master(action);
39 /** Performs a read action.*/
40 uint64_t model_read_action(void * obj, memory_order ord) {
41 return model->switch_to_master(new ModelAction(ATOMIC_READ, ord, obj));
44 /** Performs a write action.*/
45 void model_write_action(void * obj, memory_order ord, uint64_t val) {
46 model->switch_to_master(new ModelAction(ATOMIC_WRITE, ord, obj, val));
49 /** Performs an init action. */
50 void model_init_action(void * obj, uint64_t val) {
51 model->switch_to_master(new ModelAction(ATOMIC_INIT, memory_order_relaxed, obj, val));
55 * Performs the read part of a RMW action. The next action must either be the
56 * write part of the RMW action or an explicit close out of the RMW action w/o
59 uint64_t model_rmwr_action(void *obj, memory_order ord) {
60 return model->switch_to_master(new ModelAction(ATOMIC_RMWR, ord, obj));
64 * Performs the read part of a RMW CAS action. The next action must
65 * either be the write part of the RMW action or an explicit close out
66 * of the RMW action w/o a write.
68 uint64_t model_rmwrcas_action(void *obj, memory_order ord, uint64_t oldval, int size) {
69 return model->switch_to_master(new ModelAction(ATOMIC_RMWRCAS, ord, obj, oldval, size));
73 /** Performs the write part of a RMW action. */
74 void model_rmw_action(void *obj, memory_order ord, uint64_t val) {
75 model->switch_to_master(new ModelAction(ATOMIC_RMW, ord, obj, val));
78 /** Closes out a RMW action without doing a write. */
79 void model_rmwc_action(void *obj, memory_order ord) {
80 model->switch_to_master(new ModelAction(ATOMIC_RMWC, ord, obj));
83 /** Issues a fence operation. */
84 void model_fence_action(memory_order ord) {
85 model->switch_to_master(new ModelAction(ATOMIC_FENCE, ord, FENCE_LOCATION));
88 /* --- helper functions --- */
89 uint64_t model_rmwrcas_action_helper(void *obj, int atomic_index, uint64_t oldval, int size, const char *position) {
90 return model->switch_to_master(
91 new ModelAction(ATOMIC_RMWRCAS, position, orders[atomic_index], obj)
95 uint64_t model_rmwr_action_helper(void *obj, int atomic_index, const char *position) {
96 return model->switch_to_master(
97 new ModelAction(ATOMIC_RMWR, position, orders[atomic_index], obj)
101 void model_rmw_action_helper(void *obj, uint64_t val, int atomic_index, const char * position) {
102 model->switch_to_master(
103 new ModelAction(ATOMIC_RMW, position, orders[atomic_index], obj, val)
107 void model_rmwc_action_helper(void *obj, int atomic_index, const char *position) {
108 model->switch_to_master(
109 new ModelAction(ATOMIC_RMWC, position, orders[atomic_index], obj)
114 void cds_atomic_init8(void * obj, uint8_t val, const char * position) {
116 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
119 void cds_atomic_init16(void * obj, uint16_t val, const char * position) {
121 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
124 void cds_atomic_init32(void * obj, uint32_t val, const char * position) {
126 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)
129 void cds_atomic_init64(void * obj, uint64_t val, const char * position) {
131 new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, val)
137 uint8_t cds_atomic_load8(void * obj, int atomic_index, const char * position) {
138 return (uint8_t) ensureModelValue(
139 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj));
141 uint16_t cds_atomic_load16(void * obj, int atomic_index, const char * position) {
142 return (uint16_t) ensureModelValue(
143 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj));
145 uint32_t cds_atomic_load32(void * obj, int atomic_index, const char * position) {
146 return (uint32_t) ensureModelValue(
147 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj)
150 uint64_t cds_atomic_load64(void * obj, int atomic_index, const char * position) {
151 return ensureModelValue(
152 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj));
156 void cds_atomic_store8(void * obj, uint8_t val, int atomic_index, const char * position) {
158 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
161 void cds_atomic_store16(void * obj, uint16_t val, int atomic_index, const char * position) {
163 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
166 void cds_atomic_store32(void * obj, uint32_t val, int atomic_index, const char * position) {
168 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)
171 void cds_atomic_store64(void * obj, uint64_t val, int atomic_index, const char * position) {
173 new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, val)
177 #define _ATOMIC_RMW_(__op__, size, addr, val, atomic_index, position) \
179 uint ## size ## _t _old = model_rmwr_action_helper(addr, atomic_index, position); \
180 uint ## size ## _t _copy = _old; \
181 uint ## size ## _t _val = val; \
183 model_rmw_action_helper(addr, (uint64_t) _copy, atomic_index, position); \
187 // cds atomic exchange
188 uint8_t cds_atomic_exchange8(void* addr, uint8_t val, int atomic_index, const char * position) {
189 _ATOMIC_RMW_( =, 8, addr, val, atomic_index, position);
191 uint16_t cds_atomic_exchange16(void* addr, uint16_t val, int atomic_index, const char * position) {
192 _ATOMIC_RMW_( =, 16, addr, val, atomic_index, position);
194 uint32_t cds_atomic_exchange32(void* addr, uint32_t val, int atomic_index, const char * position) {
195 _ATOMIC_RMW_( =, 32, addr, val, atomic_index, position);
197 uint64_t cds_atomic_exchange64(void* addr, uint64_t val, int atomic_index, const char * position) {
198 _ATOMIC_RMW_( =, 64, addr, val, atomic_index, position);
201 // cds atomic fetch add
202 uint8_t cds_atomic_fetch_add8(void* addr, uint8_t val, int atomic_index, const char * position) {
203 _ATOMIC_RMW_( +=, 8, addr, val, atomic_index, position);
205 uint16_t cds_atomic_fetch_add16(void* addr, uint16_t val, int atomic_index, const char * position) {
206 _ATOMIC_RMW_( +=, 16, addr, val, atomic_index, position);
208 uint32_t cds_atomic_fetch_add32(void* addr, uint32_t val, int atomic_index, const char * position) {
209 _ATOMIC_RMW_( +=, 32, addr, val, atomic_index, position);
211 uint64_t cds_atomic_fetch_add64(void* addr, uint64_t val, int atomic_index, const char * position) {
212 _ATOMIC_RMW_( +=, 64, addr, val, atomic_index, position);
215 // cds atomic fetch sub
216 uint8_t cds_atomic_fetch_sub8(void* addr, uint8_t val, int atomic_index, const char * position) {
217 _ATOMIC_RMW_( -=, 8, addr, val, atomic_index, position);
219 uint16_t cds_atomic_fetch_sub16(void* addr, uint16_t val, int atomic_index, const char * position) {
220 _ATOMIC_RMW_( -=, 16, addr, val, atomic_index, position);
222 uint32_t cds_atomic_fetch_sub32(void* addr, uint32_t val, int atomic_index, const char * position) {
223 _ATOMIC_RMW_( -=, 32, addr, val, atomic_index, position);
225 uint64_t cds_atomic_fetch_sub64(void* addr, uint64_t val, int atomic_index, const char * position) {
226 _ATOMIC_RMW_( -=, 64, addr, val, atomic_index, position);
229 // cds atomic fetch and
230 uint8_t cds_atomic_fetch_and8(void* addr, uint8_t val, int atomic_index, const char * position) {
231 _ATOMIC_RMW_( &=, 8, addr, val, atomic_index, position);
233 uint16_t cds_atomic_fetch_and16(void* addr, uint16_t val, int atomic_index, const char * position) {
234 _ATOMIC_RMW_( &=, 16, addr, val, atomic_index, position);
236 uint32_t cds_atomic_fetch_and32(void* addr, uint32_t val, int atomic_index, const char * position) {
237 _ATOMIC_RMW_( &=, 32, addr, val, atomic_index, position);
239 uint64_t cds_atomic_fetch_and64(void* addr, uint64_t val, int atomic_index, const char * position) {
240 _ATOMIC_RMW_( &=, 64, addr, val, atomic_index, position);
243 // cds atomic fetch or
244 uint8_t cds_atomic_fetch_or8(void* addr, uint8_t val, int atomic_index, const char * position) {
245 _ATOMIC_RMW_( |=, 8, addr, val, atomic_index, position);
247 uint16_t cds_atomic_fetch_or16(void* addr, uint16_t val, int atomic_index, const char * position) {
248 _ATOMIC_RMW_( |=, 16, addr, val, atomic_index, position);
250 uint32_t cds_atomic_fetch_or32(void* addr, uint32_t val, int atomic_index, const char * position) {
251 _ATOMIC_RMW_( |=, 32, addr, val, atomic_index, position);
253 uint64_t cds_atomic_fetch_or64(void* addr, uint64_t val, int atomic_index, const char * position) {
254 _ATOMIC_RMW_( |=, 64, addr, val, atomic_index, position);
257 // cds atomic fetch xor
258 uint8_t cds_atomic_fetch_xor8(void* addr, uint8_t val, int atomic_index, const char * position) {
259 _ATOMIC_RMW_( ^=, 8, addr, val, atomic_index, position);
261 uint16_t cds_atomic_fetch_xor16(void* addr, uint16_t val, int atomic_index, const char * position) {
262 _ATOMIC_RMW_( ^=, 16, addr, val, atomic_index, position);
264 uint32_t cds_atomic_fetch_xor32(void* addr, uint32_t val, int atomic_index, const char * position) {
265 _ATOMIC_RMW_( ^=, 32, addr, val, atomic_index, position);
267 uint64_t cds_atomic_fetch_xor64(void* addr, uint64_t val, int atomic_index, const char * position) {
268 _ATOMIC_RMW_( ^=, 64, addr, val, atomic_index, position);
271 // cds atomic compare and exchange
272 // In order to accomodate the LLVM PASS, the return values are not true or false.
274 #define _ATOMIC_CMPSWP_WEAK_ _ATOMIC_CMPSWP_
275 #define _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index, position) \
277 uint ## size ## _t _desired = desired; \
278 uint ## size ## _t _expected = expected; \
279 uint ## size ## _t _old = model_rmwrcas_action_helper(addr, atomic_index, _expected, sizeof(_expected), position); \
280 if (_old == _expected) { \
281 model_rmw_action_helper(addr, (uint64_t) _desired, atomic_index, position); return _expected; } \
283 model_rmwc_action_helper(addr, atomic_index, position); _expected = _old; return _old; } \
286 // atomic_compare_exchange version 1: the CmpOperand (corresponds to expected)
287 // extracted from LLVM IR is an integer type.
289 uint8_t cds_atomic_compare_exchange8_v1(void* addr, uint8_t expected, uint8_t desired,
290 int atomic_index_succ, int atomic_index_fail, const char *position )
292 _ATOMIC_CMPSWP_(8, addr, expected, desired,
293 atomic_index_succ, position);
295 uint16_t cds_atomic_compare_exchange16_v1(void* addr, uint16_t expected, uint16_t desired,
296 int atomic_index_succ, int atomic_index_fail, const char *position)
298 _ATOMIC_CMPSWP_(16, addr, expected, desired,
299 atomic_index_succ, position);
301 uint32_t cds_atomic_compare_exchange32_v1(void* addr, uint32_t expected, uint32_t desired,
302 int atomic_index_succ, int atomic_index_fail, const char *position)
304 _ATOMIC_CMPSWP_(32, addr, expected, desired,
305 atomic_index_succ, position);
307 uint64_t cds_atomic_compare_exchange64_v1(void* addr, uint64_t expected, uint64_t desired,
308 int atomic_index_succ, int atomic_index_fail, const char *position)
310 _ATOMIC_CMPSWP_(64, addr, expected, desired,
311 atomic_index_succ, position);
314 // atomic_compare_exchange version 2
315 bool cds_atomic_compare_exchange8_v2(void* addr, uint8_t* expected, uint8_t desired,
316 int atomic_index_succ, int atomic_index_fail, const char *position )
318 uint8_t ret = cds_atomic_compare_exchange8_v1(addr, *expected,
319 desired, atomic_index_succ, atomic_index_fail, position);
320 if (ret == *expected) return true;
323 bool cds_atomic_compare_exchange16_v2(void* addr, uint16_t* expected, uint16_t desired,
324 int atomic_index_succ, int atomic_index_fail, const char *position)
326 uint16_t ret = cds_atomic_compare_exchange16_v1(addr, *expected,
327 desired, atomic_index_succ, atomic_index_fail, position);
328 if (ret == *expected) return true;
331 bool cds_atomic_compare_exchange32_v2(void* addr, uint32_t* expected, uint32_t desired,
332 int atomic_index_succ, int atomic_index_fail, const char *position)
334 uint32_t ret = cds_atomic_compare_exchange32_v1(addr, *expected,
335 desired, atomic_index_succ, atomic_index_fail, position);
336 if (ret == *expected) return true;
339 bool cds_atomic_compare_exchange64_v2(void* addr, uint64_t* expected, uint64_t desired,
340 int atomic_index_succ, int atomic_index_fail, const char *position)
342 uint64_t ret = cds_atomic_compare_exchange64_v1(addr, *expected,
343 desired, atomic_index_succ, atomic_index_fail, position);
344 if (ret == *expected) return true;
349 // cds atomic thread fence
351 void cds_atomic_thread_fence(int atomic_index, const char * position) {
352 model->switch_to_master(
353 new ModelAction(ATOMIC_FENCE, position, orders[atomic_index], FENCE_LOCATION)
358 #define _ATOMIC_CMPSWP_( __a__, __e__, __m__, __x__ ) \
359 ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__); \
360 __typeof__(__e__) __q__ = (__e__); \
361 __typeof__(__m__) __v__ = (__m__); \
363 __typeof__((__a__)->__f__) __t__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
364 if (__t__ == * __q__ ) { \
365 model_rmw_action((void *)__p__, __x__, (uint64_t) __v__); __r__ = true; } \
366 else { model_rmwc_action((void *)__p__, __x__); *__q__ = __t__; __r__ = false;} \
369 #define _ATOMIC_FENCE_( __x__ ) \
370 ({ model_fence_action(__x__);})
375 #define _ATOMIC_MODIFY_( __a__, __o__, __m__, __x__ ) \
376 ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__); \
377 __typeof__((__a__)->__f__) __old__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
378 __typeof__(__m__) __v__ = (__m__); \
379 __typeof__((__a__)->__f__) __copy__= __old__; \
380 __copy__ __o__ __v__; \
381 model_rmw_action((void *)__p__, __x__, (uint64_t) __copy__); \
382 __old__ = __old__; Silence clang (-Wunused-value) \