1 /* Copyright (c) 2007-2012 Da SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "simgrid_config.h"
13 #include "mc/datatypes.h"
15 #include "xbt/config.h"
16 #include "xbt/function_types.h"
17 #include "xbt/mmalloc.h"
18 #include "../simix/smx_private.h"
19 #include "xbt/automaton.h"
22 #include "msg/datatypes.h"
23 #include "xbt/strbuff.h"
25 /****************************** Snapshots ***********************************/
27 typedef struct s_mc_mem_region{
32 } s_mc_mem_region_t, *mc_mem_region_t;
34 typedef struct s_mc_snapshot{
36 size_t heap_chunks_used;
37 mc_mem_region_t *regions;
40 } s_mc_snapshot_t, *mc_snapshot_t;
42 typedef struct s_mc_snapshot_stack{
43 xbt_strbuff_t local_variables;
46 }s_mc_snapshot_stack_t, *mc_snapshot_stack_t;
48 typedef struct s_mc_global_t{
49 mc_snapshot_t snapshot;
51 }s_mc_global_t, *mc_global_t;
53 //void MC_take_snapshot(mc_snapshot_t);
54 mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall);
55 mc_snapshot_t MC_take_snapshot(void);
56 void MC_restore_snapshot(mc_snapshot_t);
57 void MC_free_snapshot(mc_snapshot_t);
58 void snapshot_stack_free_voidp(void *s);
60 /********************************* MC Global **********************************/
61 extern double *mc_time;
63 int MC_deadlock_check(void);
64 void MC_replay(xbt_fifo_t stack, int start);
65 void MC_replay_liveness(xbt_fifo_t stack, int all_stack);
66 void MC_wait_for_requests(void);
67 void MC_get_enabled_processes();
68 void MC_show_deadlock(smx_simcall_t req);
69 void MC_show_stack_safety(xbt_fifo_t stack);
70 void MC_dump_stack_safety(xbt_fifo_t stack);
72 /********************************* Requests ***********************************/
73 int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
74 char* MC_request_to_string(smx_simcall_t req, int value);
75 unsigned int MC_request_testany_fail(smx_simcall_t req);
76 /*int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
77 int MC_request_is_visible(smx_simcall_t req);
78 int MC_request_is_enabled(smx_simcall_t req);
79 int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx);
80 int MC_process_is_enabled(smx_process_t process);
83 /******************************** States **************************************/
84 /* Possible exploration status of a process in a state */
86 MC_NOT_INTERLEAVE=0, /* Do not interleave (do not execute) */
87 MC_INTERLEAVE, /* Interleave the process (one or more request) */
88 MC_DONE /* Already interleaved */
89 } e_mc_process_state_t;
91 /* On every state, each process has an entry of the following type */
92 typedef struct mc_procstate{
93 e_mc_process_state_t state; /* Exploration control information */
94 unsigned int interleave_count; /* Number of times that the process was
96 } s_mc_procstate_t, *mc_procstate_t;
98 /* An exploration state is composed of: */
99 typedef struct mc_state {
100 unsigned long max_pid; /* Maximum pid at state's creation time */
101 mc_procstate_t proc_status; /* State's exploration status by process */
102 s_smx_action_t internal_comm; /* To be referenced by the internal_req */
103 s_smx_simcall_t internal_req; /* Internal translation of request */
104 s_smx_simcall_t executed_req; /* The executed request of the state */
105 int req_num; /* The request number (in the case of a
106 multi-request like waitany ) */
107 mc_snapshot_t system_state; /* Snapshot of system state */
108 } s_mc_state_t, *mc_state_t;
110 extern xbt_fifo_t mc_stack_safety_stateless;
112 mc_state_t MC_state_new(void);
113 void MC_state_delete(mc_state_t state);
114 void MC_state_interleave_process(mc_state_t state, smx_process_t process);
115 unsigned int MC_state_interleave_size(mc_state_t state);
116 int MC_state_process_is_done(mc_state_t state, smx_process_t process);
117 void MC_state_set_executed_request(mc_state_t state, smx_simcall_t req, int value);
118 smx_simcall_t MC_state_get_executed_request(mc_state_t state, int *value);
119 smx_simcall_t MC_state_get_internal_request(mc_state_t state);
120 smx_simcall_t MC_state_get_request(mc_state_t state, int *value);
121 void MC_state_remove_interleave_process(mc_state_t state, smx_process_t process);
123 /****************************** Statistics ************************************/
124 typedef struct mc_stats {
125 unsigned long state_size;
126 unsigned long visited_states;
127 unsigned long expanded_states;
128 unsigned long executed_transitions;
129 } s_mc_stats_t, *mc_stats_t;
131 typedef struct mc_stats_pair {
132 //unsigned long pair_size;
133 unsigned long visited_pairs;
134 unsigned long expanded_pairs;
135 unsigned long executed_transitions;
136 } s_mc_stats_pair_t, *mc_stats_pair_t;
138 extern mc_stats_t mc_stats;
139 extern mc_stats_pair_t mc_stats_pair;
141 void MC_print_statistics(mc_stats_t);
142 void MC_print_statistics_pairs(mc_stats_pair_t);
144 /********************************** MEMORY ******************************/
145 /* The possible memory modes for the modelchecker are standard and raw. */
146 /* Normally the system should operate in std, for switching to raw mode */
147 /* you must wrap the code between MC_SET_RAW_MODE and MC_UNSET_RAW_MODE */
149 extern void *std_heap;
150 extern void *raw_heap;
153 /* FIXME: Horrible hack! because the mmalloc library doesn't provide yet of */
154 /* an API to query about the status of a heap, we simply call mmstats and */
155 /* because I now how does structure looks like, then I redefine it here */
157 /* struct mstats { */
158 /* size_t bytes_total; /\* Total size of the heap. *\/ */
159 /* size_t chunks_used; /\* Chunks allocated by the user. *\/ */
160 /* size_t bytes_used; /\* Byte total of user-allocated chunks. *\/ */
161 /* size_t chunks_free; /\* Chunks in the free list. *\/ */
162 /* size_t bytes_free; /\* Byte total of chunks in the free list. *\/ */
165 #define MC_SET_RAW_MEM mmalloc_set_current_heap(raw_heap)
166 #define MC_UNSET_RAW_MEM mmalloc_set_current_heap(std_heap)
168 /******************************* MEMORY MAPPINGS ***************************/
169 /* These functions and data structures implements a binary interface for */
170 /* the proc maps ascii interface */
172 /* Each field is defined as documented in proc's manual page */
173 typedef struct s_map_region {
175 void *start_addr; /* Start address of the map */
176 void *end_addr; /* End address of the map */
177 int prot; /* Memory protection */
178 int flags; /* Aditional memory flags */
179 void *offset; /* Offset in the file/whatever */
180 char dev_major; /* Major of the device */
181 char dev_minor; /* Minor of the device */
182 unsigned long inode; /* Inode in the device */
183 char *pathname; /* Path name of the mapped file */
187 typedef struct s_memory_map {
189 s_map_region_t *regions; /* Pointer to an array of regions */
190 int mapsize; /* Number of regions in the memory */
192 } s_memory_map_t, *memory_map_t;
194 memory_map_t get_memory_map(void);
195 void free_memory_map(memory_map_t map);
196 void get_libsimgrid_plt_section(void);
197 void get_binary_plt_section(void);
199 extern void *start_data_libsimgrid;
200 extern void *end_raw_heap;
201 extern void *start_data_binary;
202 extern void *start_bss_binary;
203 extern char *libsimgrid_path;
204 extern void *start_text_libsimgrid;
205 extern void *start_bss_libsimgrid;
206 extern void *start_plt_libsimgrid;
207 extern void *end_plt_libsimgrid;
208 extern void *start_plt_binary;
209 extern void *end_plt_binary;
210 extern void *start_got_plt_libsimgrid;
211 extern void *end_got_plt_libsimgrid;
212 extern void *start_got_plt_binary;
213 extern void *end_got_plt_binary;
216 /********************************** DPOR for safety **************************************/
223 extern e_mc_reduce_t mc_reduce_kind;
224 extern mc_global_t initial_state_safety;
226 void MC_dpor_init(void);
228 void MC_dpor_exit(void);
231 typedef struct s_mc_safety_visited_state{
232 mc_snapshot_t system_state;
234 }s_mc_safety_visited_state_t, *mc_safety_visited_state_t;
237 /********************************** Double-DFS for liveness property**************************************/
239 extern xbt_fifo_t mc_stack_liveness;
240 extern mc_global_t initial_state_liveness;
241 extern xbt_automaton_t _mc_property_automaton;
243 extern xbt_dynar_t mc_stack_comparison_ignore;
244 extern xbt_dynar_t mc_data_bss_comparison_ignore;
247 typedef struct s_mc_pair{
248 mc_snapshot_t system_state;
249 mc_state_t graph_state;
250 xbt_state_t automaton_state;
251 }s_mc_pair_t, *mc_pair_t;
253 typedef struct s_mc_comparison_times{
255 xbt_dynar_t snapshot_comparison_times;
256 xbt_dynar_t chunks_used_comparison_times;
257 xbt_dynar_t stacks_sizes_comparison_times;
258 xbt_dynar_t binary_global_variables_comparison_times;
259 xbt_dynar_t libsimgrid_global_variables_comparison_times;
260 xbt_dynar_t heap_comparison_times;
261 xbt_dynar_t stacks_comparison_times;
262 }s_mc_comparison_times_t, *mc_comparison_times_t;
264 typedef struct s_mc_pair_reached{
266 xbt_state_t automaton_state;
267 xbt_dynar_t prop_ato;
268 mc_snapshot_t system_state;
269 mc_comparison_times_t comparison_times;
270 }s_mc_pair_reached_t, *mc_pair_reached_t;
272 typedef struct s_mc_pair_visited{
273 xbt_state_t automaton_state;
274 xbt_dynar_t prop_ato;
275 mc_snapshot_t system_state;
276 }s_mc_pair_visited_t, *mc_pair_visited_t;
278 int MC_automaton_evaluate_label(xbt_exp_label_t l);
279 mc_pair_t new_pair(mc_snapshot_t sn, mc_state_t sg, xbt_state_t st);
280 mc_comparison_times_t new_comparison_times(void);
282 int reached(xbt_state_t st);
283 void set_pair_reached(xbt_state_t st);
284 int visited(xbt_state_t st);
285 int SIMIX_pre_mc_compare_snapshots(smx_simcall_t simcall,
286 mc_snapshot_t s1, mc_snapshot_t s2);
287 int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2, mc_comparison_times_t ct1, mc_comparison_times_t ct2);
288 void MC_pair_delete(mc_pair_t pair);
289 void MC_exit_liveness(void);
290 mc_state_t MC_state_pair_new(void);
291 void pair_reached_free(mc_pair_reached_t pair);
292 void pair_reached_free_voidp(void *p);
293 void pair_visited_free(mc_pair_visited_t pair);
294 void pair_visited_free_voidp(void *p);
295 void MC_init_liveness(void);
296 void MC_init_memory_map_info(void);
297 void MC_print_comparison_times_statistics(mc_comparison_times_t ct);
299 int get_heap_region_index(mc_snapshot_t s);
301 /* **** Double-DFS stateless **** */
303 typedef struct s_mc_pair_stateless{
304 mc_state_t graph_state;
305 xbt_state_t automaton_state;
307 }s_mc_pair_stateless_t, *mc_pair_stateless_t;
309 mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st, int r);
310 void MC_ddfs_init(void);
311 void MC_ddfs(int search_cycle);
312 void MC_show_stack_liveness(xbt_fifo_t stack);
313 void MC_dump_stack_liveness(xbt_fifo_t stack);
314 void pair_stateless_free(mc_pair_stateless_t pair);
315 void pair_stateless_free_voidp(void *p);
317 /********************************** Configuration of MC **************************************/
318 extern xbt_fifo_t mc_stack_safety;
320 /****** Core dump ******/
322 int create_dump(int pair);
324 /****** Local variables with DWARF ******/
340 } e_dw_location_type;
342 typedef struct s_dw_location{
343 e_dw_location_type type;
361 unsigned short int deref_size;
369 long unsigned int value;
374 long signed int value;
377 unsigned int plus_uconst;
380 }s_dw_location_t, *dw_location_t;
382 typedef struct s_dw_location_entry{
385 dw_location_t location;
386 }s_dw_location_entry_t, *dw_location_entry_t;
388 typedef struct s_dw_local_variable{
390 dw_location_t location;
391 }s_dw_local_variable_t, *dw_local_variable_t;
393 typedef struct s_dw_frame{
397 dw_location_t frame_base;
398 xbt_dict_t variables;
399 unsigned long int start;
400 unsigned long int end;
401 }s_dw_frame_t, *dw_frame_t;
403 /* FIXME : implement free functions for each structure */
405 extern xbt_dict_t mc_local_variables;
407 typedef struct s_variable_value{
414 }s_variable_value_t, *variable_value_t;
416 void variable_value_free_voidp(void* v);
417 void variable_value_free(variable_value_t v);
419 void MC_get_local_variables(const char *elf_file, xbt_dict_t location_list, xbt_dict_t *variables);
420 void print_local_variables(xbt_dict_t list);
421 char *get_libsimgrid_path(void);
422 xbt_dict_t MC_get_location_list(const char *elf_file);
424 /**** Global variables ****/
426 typedef struct s_global_variable{
430 }s_global_variable_t, *global_variable_t;
432 void global_variable_free(global_variable_t v);
433 void global_variable_free_voidp(void *v);
435 extern xbt_dynar_t mc_global_variables;