8 #include "snapshot-interface.h"
9 #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 /* --- helper functions --- */
18 uint64_t model_rmwrcas_action_helper(void *obj, int atomic_index, uint64_t oldval, int size, const char *position) {
19 createModelIfNotExist();
20 return model->switch_thread(new ModelAction(ATOMIC_RMWRCAS, position, orders[atomic_index], obj, oldval, size));
23 uint64_t model_rmwr_action_helper(void *obj, int atomic_index, const char *position) {
24 createModelIfNotExist();
25 return model->switch_thread(new ModelAction(ATOMIC_RMWR, position, orders[atomic_index], obj));
28 void model_rmw_action_helper(void *obj, uint64_t val, int atomic_index, const char * position) {
29 createModelIfNotExist();
30 model->switch_thread(new ModelAction(ATOMIC_RMW, position, orders[atomic_index], obj, val));
33 void model_rmwc_action_helper(void *obj, int atomic_index, const char *position) {
34 createModelIfNotExist();
35 model->switch_thread(new ModelAction(ATOMIC_RMWC, position, orders[atomic_index], obj));
39 #define VOLATILELOAD(size) \
40 uint ## size ## _t cds_volatile_load ## size(void * obj, const char * position) { \
41 createModelIfNotExist(); \
42 return (uint ## size ## _t)model->switch_thread(new ModelAction(ATOMIC_READ, position, memory_order_volatile_load, obj)); \
50 // cds volatile stores
51 #define VOLATILESTORE(size) \
52 void cds_volatile_store ## size (void * obj, uint ## size ## _t val, const char * position) { \
53 createModelIfNotExist(); \
54 model->switch_thread(new ModelAction(ATOMIC_WRITE, position, memory_order_volatile_store, obj, (uint64_t) val)); \
55 *((volatile uint ## size ## _t *)obj) = val; \
56 thread_id_t tid = thread_current_id(); \
57 for(int i=0;i < size / 8;i++) { \
58 atomraceCheckWrite(tid, (void *)(((char *)obj)+i)); \
68 #define CDSATOMICINT(size) \
69 void cds_atomic_init ## size (void * obj, uint ## size ## _t val, const char * position) { \
70 createModelIfNotExist(); \
71 model->switch_thread(new ModelAction(ATOMIC_INIT, position, memory_order_relaxed, obj, (uint64_t) val)); \
72 *((volatile uint ## size ## _t *)obj) = val; \
73 thread_id_t tid = thread_current_id(); \
74 for(int i=0;i < size / 8;i++) { \
75 atomraceCheckWrite(tid, (void *)(((char *)obj)+i)); \
85 #define CDSATOMICLOAD(size) \
86 uint ## size ## _t cds_atomic_load ## size(void * obj, int atomic_index, const char * position) { \
87 createModelIfNotExist(); \
88 uint ## size ## _t val = (uint ## size ## _t)model->switch_thread( \
89 new ModelAction(ATOMIC_READ, position, orders[atomic_index], obj)); \
90 thread_id_t tid = thread_current_id(); \
91 for(int i=0;i < size / 8;i++) { \
92 atomraceCheckRead(tid, (void *)(((char *)obj)+i)); \
103 #define CDSATOMICSTORE(size) \
104 void cds_atomic_store ## size(void * obj, uint ## size ## _t val, int atomic_index, const char * position) { \
105 createModelIfNotExist(); \
106 model->switch_thread(new ModelAction(ATOMIC_WRITE, position, orders[atomic_index], obj, (uint64_t) val)); \
107 *((volatile uint ## size ## _t *)obj) = val; \
108 thread_id_t tid = thread_current_id(); \
109 for(int i=0;i < size / 8;i++) { \
110 atomraceCheckWrite(tid, (void *)(((char *)obj)+i)); \
120 #define _ATOMIC_RMW_(__op__, size, addr, val, atomic_index, position) \
122 uint ## size ## _t _old = model_rmwr_action_helper(addr, atomic_index, position); \
123 uint ## size ## _t _copy = _old; \
124 uint ## size ## _t _val = val; \
126 model_rmw_action_helper(addr, (uint64_t) _copy, atomic_index, position); \
127 *((volatile uint ## size ## _t *)addr) = _copy; \
128 thread_id_t tid = thread_current_id(); \
129 for(int i=0;i < size / 8;i++) { \
130 atomraceCheckRead(tid, (void *)(((char *)addr)+i)); \
131 recordWrite(tid, (void *)(((char *)addr)+i)); \
136 // cds atomic exchange
137 #define CDSATOMICEXCHANGE(size) \
138 uint ## size ## _t cds_atomic_exchange ## size(void* addr, uint ## size ## _t val, int atomic_index, const char * position) { \
139 _ATOMIC_RMW_( =, size, addr, val, atomic_index, position); \
143 CDSATOMICEXCHANGE(16)
144 CDSATOMICEXCHANGE(32)
145 CDSATOMICEXCHANGE(64)
147 // cds atomic fetch add
148 #define CDSATOMICADD(size) \
149 uint ## size ## _t cds_atomic_fetch_add ## size(void* addr, uint ## size ## _t val, int atomic_index, const char * position) { \
150 _ATOMIC_RMW_( +=, size, addr, val, atomic_index, position); \
158 // cds atomic fetch sub
159 #define CDSATOMICSUB(size) \
160 uint ## size ## _t cds_atomic_fetch_sub ## size(void* addr, uint ## size ## _t val, int atomic_index, const char * position) { \
161 _ATOMIC_RMW_( -=, size, addr, val, atomic_index, position); \
169 // cds atomic fetch and
170 #define CDSATOMICAND(size) \
171 uint ## size ## _t cds_atomic_fetch_and ## size(void* addr, uint ## size ## _t val, int atomic_index, const char * position) { \
172 _ATOMIC_RMW_( &=, size, addr, val, atomic_index, position); \
180 // cds atomic fetch or
181 #define CDSATOMICOR(size) \
182 uint ## size ## _t cds_atomic_fetch_or ## size(void* addr, uint ## size ## _t val, int atomic_index, const char * position) { \
183 _ATOMIC_RMW_( |=, size, addr, val, atomic_index, position); \
191 // cds atomic fetch xor
192 #define CDSATOMICXOR(size) \
193 uint ## size ## _t cds_atomic_fetch_xor ## size(void* addr, uint ## size ## _t val, int atomic_index, const char * position) { \
194 _ATOMIC_RMW_( ^=, size, addr, val, atomic_index, position); \
202 // cds atomic compare and exchange
203 // In order to accomodate the LLVM PASS, the return values are not true or false.
205 #define _ATOMIC_CMPSWP_WEAK_ _ATOMIC_CMPSWP_
206 #define _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index, position) \
208 uint ## size ## _t _desired = desired; \
209 uint ## size ## _t _expected = expected; \
210 uint ## size ## _t _old = model_rmwrcas_action_helper(addr, atomic_index, _expected, sizeof(_expected), position); \
211 if (_old == _expected) { \
212 model_rmw_action_helper(addr, (uint64_t) _desired, atomic_index, position); \
213 *((volatile uint ## size ## _t *)addr) = desired; \
214 thread_id_t tid = thread_current_id(); \
215 for(int i=0;i < size / 8;i++) { \
216 recordWrite(tid, (void *)(((char *)addr)+i)); \
218 return _expected; } \
220 model_rmwc_action_helper(addr, atomic_index, position); _expected = _old; return _old; } \
223 // atomic_compare_exchange version 1: the CmpOperand (corresponds to expected)
224 // extracted from LLVM IR is an integer type.
225 #define CDSATOMICCASV1(size) \
226 uint ## size ## _t cds_atomic_compare_exchange ## size ## _v1(void* addr, uint ## size ## _t expected, uint ## size ## _t desired, int atomic_index_succ, int atomic_index_fail, const char *position) { \
227 _ATOMIC_CMPSWP_(size, addr, expected, desired, atomic_index_succ, position); \
235 // atomic_compare_exchange version 2
236 #define CDSATOMICCASV2(size) \
237 bool cds_atomic_compare_exchange ## size ## _v2(void* addr, uint ## size ## _t* expected, uint ## size ## _t desired, int atomic_index_succ, int atomic_index_fail, const char *position) { \
238 uint ## size ## _t ret = cds_atomic_compare_exchange ## size ## _v1(addr, *expected, desired, atomic_index_succ, atomic_index_fail, position); \
239 if (ret == *expected) {return true;} else {return false;} \
247 // cds atomic thread fence
249 void cds_atomic_thread_fence(int atomic_index, const char * position) {
250 model->switch_thread(
251 new ModelAction(ATOMIC_FENCE, position, orders[atomic_index], FENCE_LOCATION)
256 #define _ATOMIC_CMPSWP_( __a__, __e__, __m__, __x__ ) \
257 ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__); \
258 __typeof__(__e__) __q__ = (__e__); \
259 __typeof__(__m__) __v__ = (__m__); \
261 __typeof__((__a__)->__f__) __t__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
262 if (__t__ == * __q__ ) { \
263 model_rmw_action((void *)__p__, __x__, (uint64_t) __v__); __r__ = true; } \
264 else { model_rmwc_action((void *)__p__, __x__); *__q__ = __t__; __r__ = false;} \
267 #define _ATOMIC_FENCE_( __x__ ) \
268 ({ model_fence_action(__x__);})
273 #define _ATOMIC_MODIFY_( __a__, __o__, __m__, __x__ ) \
274 ({ volatile __typeof__((__a__)->__f__)* __p__ = & ((__a__)->__f__); \
275 __typeof__((__a__)->__f__) __old__=(__typeof__((__a__)->__f__)) model_rmwr_action((void *)__p__, __x__); \
276 __typeof__(__m__) __v__ = (__m__); \
277 __typeof__((__a__)->__f__) __copy__= __old__; \
278 __copy__ __o__ __v__; \
279 model_rmw_action((void *)__p__, __x__, (uint64_t) __copy__); \
280 __old__ = __old__; Silence clang (-Wunused-value) \
284 void cds_func_entry(const char * funcName) {
287 void cds_func_exit(const char * funcName) {