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"
15 #include "mc/datatypes.h"
17 #include "xbt/config.h"
18 #include "xbt/function_types.h"
19 #include "xbt/mmalloc.h"
20 #include "../simix/smx_private.h"
21 #include "xbt/automaton.h"
24 #include "msg/datatypes.h"
25 #include "xbt/strbuff.h"
27 /****************************** Snapshots ***********************************/
29 #define NB_REGIONS 3 /* binary data (data + BSS) (type = 2), libsimgrid data (data + BSS) (type = 1), std_heap (type = 0)*/
31 typedef struct s_mc_mem_region{
35 } s_mc_mem_region_t, *mc_mem_region_t;
37 typedef struct s_mc_snapshot{
38 size_t heap_bytes_used;
39 mc_mem_region_t regions[NB_REGIONS];
43 xbt_dynar_t to_ignore;
46 } s_mc_snapshot_t, *mc_snapshot_t;
48 typedef struct s_mc_snapshot_stack{
49 xbt_strbuff_t local_variables;
51 }s_mc_snapshot_stack_t, *mc_snapshot_stack_t;
53 typedef struct s_mc_global_t{
54 mc_snapshot_t snapshot;
56 }s_mc_global_t, *mc_global_t;
58 mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall);
59 mc_snapshot_t MC_take_snapshot(void);
60 void MC_restore_snapshot(mc_snapshot_t);
61 void MC_free_snapshot(mc_snapshot_t);
62 void snapshot_stack_free_voidp(void *s);
63 int is_stack_ignore_variable(char *frame, char *var_name);
65 /********************************* MC Global **********************************/
66 extern double *mc_time;
68 int MC_deadlock_check(void);
69 void MC_replay(xbt_fifo_t stack, int start);
70 void MC_replay_liveness(xbt_fifo_t stack, int all_stack);
71 void MC_wait_for_requests(void);
72 void MC_show_deadlock(smx_simcall_t req);
73 void MC_show_stack_safety(xbt_fifo_t stack);
74 void MC_dump_stack_safety(xbt_fifo_t stack);
76 int SIMIX_pre_mc_random(smx_simcall_t simcall);
78 /********************************* Requests ***********************************/
79 int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
80 char* MC_request_to_string(smx_simcall_t req, int value);
81 unsigned int MC_request_testany_fail(smx_simcall_t req);
82 /*int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
83 int MC_request_is_visible(smx_simcall_t req);
84 int MC_request_is_enabled(smx_simcall_t req);
85 int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx);
86 int MC_process_is_enabled(smx_process_t process);
89 /******************************** States **************************************/
90 /* Possible exploration status of a process in a state */
92 MC_NOT_INTERLEAVE=0, /* Do not interleave (do not execute) */
93 MC_INTERLEAVE, /* Interleave the process (one or more request) */
94 MC_MORE_INTERLEAVE, /* Interleave twice the process (for mc_random simcall) */
95 MC_DONE /* Already interleaved */
96 } e_mc_process_state_t;
98 /* On every state, each process has an entry of the following type */
99 typedef struct mc_procstate{
100 e_mc_process_state_t state; /* Exploration control information */
101 unsigned int interleave_count; /* Number of times that the process was
103 } s_mc_procstate_t, *mc_procstate_t;
105 /* An exploration state is composed of: */
106 typedef struct mc_state {
107 unsigned long max_pid; /* Maximum pid at state's creation time */
108 mc_procstate_t proc_status; /* State's exploration status by process */
109 s_smx_action_t internal_comm; /* To be referenced by the internal_req */
110 s_smx_simcall_t internal_req; /* Internal translation of request */
111 s_smx_simcall_t executed_req; /* The executed request of the state */
112 int req_num; /* The request number (in the case of a
113 multi-request like waitany ) */
114 mc_snapshot_t system_state; /* Snapshot of system state */
115 } s_mc_state_t, *mc_state_t;
117 mc_state_t MC_state_new(void);
118 void MC_state_delete(mc_state_t state);
119 void MC_state_interleave_process(mc_state_t state, smx_process_t process);
120 unsigned int MC_state_interleave_size(mc_state_t state);
121 int MC_state_process_is_done(mc_state_t state, smx_process_t process);
122 void MC_state_set_executed_request(mc_state_t state, smx_simcall_t req, int value);
123 smx_simcall_t MC_state_get_executed_request(mc_state_t state, int *value);
124 smx_simcall_t MC_state_get_internal_request(mc_state_t state);
125 smx_simcall_t MC_state_get_request(mc_state_t state, int *value);
126 void MC_state_remove_interleave_process(mc_state_t state, smx_process_t process);
128 /****************************** Statistics ************************************/
129 typedef struct mc_stats {
130 unsigned long state_size;
131 unsigned long visited_states;
132 unsigned long expanded_states;
133 unsigned long executed_transitions;
134 } s_mc_stats_t, *mc_stats_t;
136 typedef struct mc_stats_pair {
137 //unsigned long pair_size;
138 unsigned long visited_pairs;
139 unsigned long expanded_pairs;
140 unsigned long executed_transitions;
141 } s_mc_stats_pair_t, *mc_stats_pair_t;
143 extern mc_stats_t mc_stats;
144 extern mc_stats_pair_t mc_stats_pair;
146 void MC_print_statistics(mc_stats_t);
147 void MC_print_statistics_pairs(mc_stats_pair_t);
149 /********************************** MEMORY ******************************/
150 /* The possible memory modes for the modelchecker are standard and raw. */
151 /* Normally the system should operate in std, for switching to raw mode */
152 /* you must wrap the code between MC_SET_RAW_MODE and MC_UNSET_RAW_MODE */
154 extern void *std_heap;
155 extern void *raw_heap;
158 /* FIXME: Horrible hack! because the mmalloc library doesn't provide yet of */
159 /* an API to query about the status of a heap, we simply call mmstats and */
160 /* because I now how does structure looks like, then I redefine it here */
162 /* struct mstats { */
163 /* size_t bytes_total; /\* Total size of the heap. *\/ */
164 /* size_t chunks_used; /\* Chunks allocated by the user. *\/ */
165 /* size_t bytes_used; /\* Byte total of user-allocated chunks. *\/ */
166 /* size_t chunks_free; /\* Chunks in the free list. *\/ */
167 /* size_t bytes_free; /\* Byte total of chunks in the free list. *\/ */
170 #define MC_SET_RAW_MEM mmalloc_set_current_heap(raw_heap)
171 #define MC_UNSET_RAW_MEM mmalloc_set_current_heap(std_heap)
173 /******************************* MEMORY MAPPINGS ***************************/
174 /* These functions and data structures implements a binary interface for */
175 /* the proc maps ascii interface */
177 /* Each field is defined as documented in proc's manual page */
178 typedef struct s_map_region {
180 void *start_addr; /* Start address of the map */
181 void *end_addr; /* End address of the map */
182 int prot; /* Memory protection */
183 int flags; /* Aditional memory flags */
184 void *offset; /* Offset in the file/whatever */
185 char dev_major; /* Major of the device */
186 char dev_minor; /* Minor of the device */
187 unsigned long inode; /* Inode in the device */
188 char *pathname; /* Path name of the mapped file */
192 typedef struct s_memory_map {
194 s_map_region_t *regions; /* Pointer to an array of regions */
195 int mapsize; /* Number of regions in the memory */
197 } s_memory_map_t, *memory_map_t;
199 memory_map_t get_memory_map(void);
200 void free_memory_map(memory_map_t map);
201 void get_libsimgrid_plt_section(void);
202 void get_binary_plt_section(void);
204 extern void *start_data_libsimgrid;
205 extern void *start_data_binary;
206 extern void *start_bss_binary;
207 extern char *libsimgrid_path;
208 extern void *start_text_libsimgrid;
209 extern void *start_bss_libsimgrid;
210 extern void *start_plt_libsimgrid;
211 extern void *end_plt_libsimgrid;
212 extern void *start_plt_binary;
213 extern void *end_plt_binary;
214 extern void *start_got_plt_libsimgrid;
215 extern void *end_got_plt_libsimgrid;
216 extern void *start_got_plt_binary;
217 extern void *end_got_plt_binary;
219 /********************************** Snapshot comparison **********************************/
221 typedef struct s_mc_comparison_times{
222 double nb_processes_comparison_time;
223 double bytes_used_comparison_time;
224 double stacks_sizes_comparison_time;
225 double binary_global_variables_comparison_time;
226 double libsimgrid_global_variables_comparison_time;
227 double heap_comparison_time;
228 double stacks_comparison_time;
229 double hash_global_variables_comparison_time;
230 double hash_local_variables_comparison_time;
231 }s_mc_comparison_times_t, *mc_comparison_times_t;
233 extern mc_comparison_times_t mc_comp_times;
234 extern double mc_snapshot_comparison_time;
236 int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2);
237 int SIMIX_pre_mc_compare_snapshots(smx_simcall_t simcall, mc_snapshot_t s1, mc_snapshot_t s2);
238 void print_comparison_times(void);
241 //#define MC_VERBOSE 1
243 /********************************** DPOR for safety **************************************/
250 extern e_mc_reduce_t mc_reduce_kind;
251 extern mc_global_t initial_state_safety;
253 void MC_dpor_init(void);
256 typedef struct s_mc_safety_visited_state{
257 mc_snapshot_t system_state;
259 }s_mc_safety_visited_state_t, *mc_safety_visited_state_t;
262 /********************************** Double-DFS for liveness property**************************************/
264 extern xbt_fifo_t mc_stack_liveness;
265 extern mc_global_t initial_state_liveness;
266 extern xbt_automaton_t _mc_property_automaton;
268 extern xbt_dynar_t mc_stack_comparison_ignore;
269 extern xbt_dynar_t mc_data_bss_comparison_ignore;
272 typedef struct s_mc_pair{
273 mc_snapshot_t system_state;
274 mc_state_t graph_state;
275 xbt_state_t automaton_state;
276 }s_mc_pair_t, *mc_pair_t;
278 typedef struct s_mc_pair_reached{
280 xbt_state_t automaton_state;
281 xbt_dynar_t prop_ato;
282 mc_snapshot_t system_state;
283 }s_mc_pair_reached_t, *mc_pair_reached_t;
285 typedef struct s_mc_pair_visited{
286 xbt_state_t automaton_state;
287 xbt_dynar_t prop_ato;
288 mc_snapshot_t system_state;
289 }s_mc_pair_visited_t, *mc_pair_visited_t;
291 int MC_automaton_evaluate_label(xbt_exp_label_t l);
293 int reached(xbt_state_t st);
294 void set_pair_reached(xbt_state_t st);
295 int visited(xbt_state_t st);
297 void MC_pair_delete(mc_pair_t pair);
298 mc_state_t MC_state_pair_new(void);
299 void pair_reached_free(mc_pair_reached_t pair);
300 void pair_reached_free_voidp(void *p);
301 void pair_visited_free(mc_pair_visited_t pair);
302 void pair_visited_free_voidp(void *p);
303 void MC_init_memory_map_info(void);
305 int get_heap_region_index(mc_snapshot_t s);
307 /* **** Double-DFS stateless **** */
309 typedef struct s_mc_pair_stateless{
310 mc_state_t graph_state;
311 xbt_state_t automaton_state;
313 }s_mc_pair_stateless_t, *mc_pair_stateless_t;
315 mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st, int r);
316 void MC_ddfs_init(void);
317 void MC_ddfs(int search_cycle);
318 void MC_show_stack_liveness(xbt_fifo_t stack);
319 void MC_dump_stack_liveness(xbt_fifo_t stack);
320 void pair_stateless_free(mc_pair_stateless_t pair);
321 void pair_stateless_free_voidp(void *p);
323 /********************************** Configuration of MC **************************************/
324 extern xbt_fifo_t mc_stack_safety;
326 /****** Core dump ******/
328 int create_dump(int pair);
330 /****** Local variables with DWARF ******/
346 } e_dw_location_type;
348 typedef struct s_dw_location{
349 e_dw_location_type type;
367 unsigned short int deref_size;
375 long unsigned int value;
380 long signed int value;
383 unsigned int plus_uconst;
386 }s_dw_location_t, *dw_location_t;
388 typedef struct s_dw_location_entry{
391 dw_location_t location;
392 }s_dw_location_entry_t, *dw_location_entry_t;
394 typedef struct s_dw_local_variable{
396 dw_location_t location;
397 }s_dw_local_variable_t, *dw_local_variable_t;
399 typedef struct s_dw_frame{
403 dw_location_t frame_base;
404 xbt_dict_t variables;
405 unsigned long int start;
406 unsigned long int end;
407 }s_dw_frame_t, *dw_frame_t;
409 /* FIXME : implement free functions for each structure */
411 extern xbt_dict_t mc_local_variables;
413 typedef struct s_variable_value{
420 }s_variable_value_t, *variable_value_t;
422 void variable_value_free_voidp(void* v);
423 void variable_value_free(variable_value_t v);
425 void MC_get_local_variables(const char *elf_file, xbt_dict_t location_list, xbt_dict_t *variables);
426 void print_local_variables(xbt_dict_t list);
427 xbt_dict_t MC_get_location_list(const char *elf_file);
429 /**** Global variables ****/
431 typedef struct s_global_variable{
435 }s_global_variable_t, *global_variable_t;
437 void global_variable_free(global_variable_t v);
438 void global_variable_free_voidp(void *v);
440 extern xbt_dynar_t mc_global_variables;