1 /* Copyright (c) 2007-2013. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "simgrid_config.h"
15 #include <elfutils/libdw.h>
18 #include "mc/datatypes.h"
20 #include "xbt/config.h"
21 #include "xbt/function_types.h"
22 #include "xbt/mmalloc.h"
23 #include "../simix/smx_private.h"
24 #include "xbt/automaton.h"
27 #include "msg/datatypes.h"
28 #include "xbt/strbuff.h"
29 #include "xbt/parmap.h"
31 /****************************** Snapshots ***********************************/
33 #define NB_REGIONS 3 /* binary data (data + BSS) (type = 2), libsimgrid data (data + BSS) (type = 1), std_heap (type = 0)*/
35 typedef struct s_mc_mem_region{
39 } s_mc_mem_region_t, *mc_mem_region_t;
41 typedef struct s_mc_snapshot{
42 size_t heap_bytes_used;
43 mc_mem_region_t regions[NB_REGIONS];
47 xbt_dynar_t to_ignore;
49 } s_mc_snapshot_t, *mc_snapshot_t;
51 typedef struct s_mc_snapshot_stack{
52 xbt_dynar_t local_variables;
55 }s_mc_snapshot_stack_t, *mc_snapshot_stack_t;
57 typedef struct s_mc_global_t{
58 mc_snapshot_t snapshot;
62 int initial_communications_pattern_done;
63 int comm_deterministic;
64 int send_deterministic;
65 }s_mc_global_t, *mc_global_t;
67 typedef struct s_mc_checkpoint_ignore_region{
70 }s_mc_checkpoint_ignore_region_t, *mc_checkpoint_ignore_region_t;
72 mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall);
73 mc_snapshot_t MC_take_snapshot(int num_state);
74 void MC_restore_snapshot(mc_snapshot_t);
75 void MC_free_snapshot(mc_snapshot_t);
77 extern xbt_dynar_t mc_checkpoint_ignore;
79 /********************************* MC Global **********************************/
81 extern double *mc_time;
82 extern FILE *dot_output;
83 extern const char* colors[13];
84 extern xbt_parmap_t parmap;
86 extern int user_max_depth_reached;
88 int MC_deadlock_check(void);
89 void MC_replay(xbt_fifo_t stack, int start);
90 void MC_replay_liveness(xbt_fifo_t stack, int all_stack);
91 void MC_wait_for_requests(void);
92 void MC_show_deadlock(smx_simcall_t req);
93 void MC_show_stack_safety(xbt_fifo_t stack);
94 void MC_dump_stack_safety(xbt_fifo_t stack);
96 int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max);
99 /********************************* Requests ***********************************/
101 int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
102 char* MC_request_to_string(smx_simcall_t req, int value);
103 unsigned int MC_request_testany_fail(smx_simcall_t req);
104 /*int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
105 int MC_request_is_visible(smx_simcall_t req);
106 int MC_request_is_enabled(smx_simcall_t req);
107 int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx);
108 int MC_process_is_enabled(smx_process_t process);
109 char *MC_request_get_dot_output(smx_simcall_t req, int value);
112 /******************************** States **************************************/
114 /* Possible exploration status of a process in a state */
116 MC_NOT_INTERLEAVE=0, /* Do not interleave (do not execute) */
117 MC_INTERLEAVE, /* Interleave the process (one or more request) */
118 MC_MORE_INTERLEAVE, /* Interleave twice the process (for mc_random simcall) */
119 MC_DONE /* Already interleaved */
120 } e_mc_process_state_t;
122 /* On every state, each process has an entry of the following type */
123 typedef struct mc_procstate{
124 e_mc_process_state_t state; /* Exploration control information */
125 unsigned int interleave_count; /* Number of times that the process was
127 } s_mc_procstate_t, *mc_procstate_t;
129 /* An exploration state is composed of: */
130 typedef struct mc_state {
131 unsigned long max_pid; /* Maximum pid at state's creation time */
132 mc_procstate_t proc_status; /* State's exploration status by process */
133 s_smx_action_t internal_comm; /* To be referenced by the internal_req */
134 s_smx_simcall_t internal_req; /* Internal translation of request */
135 s_smx_simcall_t executed_req; /* The executed request of the state */
136 int req_num; /* The request number (in the case of a
137 multi-request like waitany ) */
138 mc_snapshot_t system_state; /* Snapshot of system state */
140 } s_mc_state_t, *mc_state_t;
142 mc_state_t MC_state_new(void);
143 void MC_state_delete(mc_state_t state);
144 void MC_state_interleave_process(mc_state_t state, smx_process_t process);
145 unsigned int MC_state_interleave_size(mc_state_t state);
146 int MC_state_process_is_done(mc_state_t state, smx_process_t process);
147 void MC_state_set_executed_request(mc_state_t state, smx_simcall_t req, int value);
148 smx_simcall_t MC_state_get_executed_request(mc_state_t state, int *value);
149 smx_simcall_t MC_state_get_internal_request(mc_state_t state);
150 smx_simcall_t MC_state_get_request(mc_state_t state, int *value);
151 void MC_state_remove_interleave_process(mc_state_t state, smx_process_t process);
154 /****************************** Statistics ************************************/
156 typedef struct mc_stats {
157 unsigned long state_size;
158 unsigned long visited_states;
159 unsigned long visited_pairs;
160 unsigned long expanded_states;
161 unsigned long expanded_pairs;
162 unsigned long executed_transitions;
163 } s_mc_stats_t, *mc_stats_t;
165 extern mc_stats_t mc_stats;
167 void MC_print_statistics(mc_stats_t);
170 /********************************** MEMORY ******************************/
171 /* The possible memory modes for the modelchecker are standard and raw. */
172 /* Normally the system should operate in std, for switching to raw mode */
173 /* you must wrap the code between MC_SET_RAW_MODE and MC_UNSET_RAW_MODE */
175 extern void *std_heap;
176 extern void *raw_heap;
179 /* FIXME: Horrible hack! because the mmalloc library doesn't provide yet of */
180 /* an API to query about the status of a heap, we simply call mmstats and */
181 /* because I now how does structure looks like, then I redefine it here */
183 /* struct mstats { */
184 /* size_t bytes_total; /\* Total size of the heap. *\/ */
185 /* size_t chunks_used; /\* Chunks allocated by the user. *\/ */
186 /* size_t bytes_used; /\* Byte total of user-allocated chunks. *\/ */
187 /* size_t chunks_free; /\* Chunks in the free list. *\/ */
188 /* size_t bytes_free; /\* Byte total of chunks in the free list. *\/ */
191 #define MC_SET_RAW_MEM mmalloc_set_current_heap(raw_heap)
192 #define MC_UNSET_RAW_MEM mmalloc_set_current_heap(std_heap)
195 /******************************* MEMORY MAPPINGS ***************************/
196 /* These functions and data structures implements a binary interface for */
197 /* the proc maps ascii interface */
199 /* Each field is defined as documented in proc's manual page */
200 typedef struct s_map_region {
202 void *start_addr; /* Start address of the map */
203 void *end_addr; /* End address of the map */
204 int prot; /* Memory protection */
205 int flags; /* Additional memory flags */
206 void *offset; /* Offset in the file/whatever */
207 char dev_major; /* Major of the device */
208 char dev_minor; /* Minor of the device */
209 unsigned long inode; /* Inode in the device */
210 char *pathname; /* Path name of the mapped file */
214 typedef struct s_memory_map {
216 s_map_region_t *regions; /* Pointer to an array of regions */
217 int mapsize; /* Number of regions in the memory */
219 } s_memory_map_t, *memory_map_t;
222 void MC_init_memory_map_info(void);
223 memory_map_t MC_get_memory_map(void);
224 void MC_free_memory_map(memory_map_t map);
226 extern char *libsimgrid_path;
228 /********************************** Snapshot comparison **********************************/
230 typedef struct s_mc_comparison_times{
231 double nb_processes_comparison_time;
232 double bytes_used_comparison_time;
233 double stacks_sizes_comparison_time;
234 double binary_global_variables_comparison_time;
235 double libsimgrid_global_variables_comparison_time;
236 double heap_comparison_time;
237 double stacks_comparison_time;
238 }s_mc_comparison_times_t, *mc_comparison_times_t;
240 extern __thread mc_comparison_times_t mc_comp_times;
241 extern __thread double mc_snapshot_comparison_time;
243 int snapshot_compare(void *state1, void *state2);
244 int SIMIX_pre_mc_compare_snapshots(smx_simcall_t simcall, mc_snapshot_t s1, mc_snapshot_t s2);
245 void print_comparison_times(void);
251 /********************************** DPOR for safety property **************************************/
259 extern e_mc_reduce_t mc_reduce_kind;
260 extern mc_global_t initial_state_safety;
261 extern xbt_fifo_t mc_stack_safety;
262 extern xbt_dict_t first_enabled_state;
264 void MC_dpor_init(void);
267 typedef struct s_mc_visited_state{
268 mc_snapshot_t system_state;
269 size_t heap_bytes_used;
272 int other_num; // dot_output for
273 }s_mc_visited_state_t, *mc_visited_state_t;
276 /********************************** Double-DFS for liveness property **************************************/
278 extern xbt_fifo_t mc_stack_liveness;
279 extern mc_global_t initial_state_liveness;
280 extern xbt_automaton_t _mc_property_automaton;
283 typedef struct s_mc_pair{
286 mc_state_t graph_state; /* System state included */
287 xbt_automaton_state_t automaton_state;
288 xbt_dynar_t atomic_propositions;
290 }s_mc_pair_t, *mc_pair_t;
292 typedef struct s_mc_visited_pair{
294 int other_num; /* Dot output for */
296 mc_state_t graph_state; /* System state included */
297 xbt_automaton_state_t automaton_state;
298 xbt_dynar_t atomic_propositions;
299 size_t heap_bytes_used;
301 int acceptance_removed;
303 }s_mc_visited_pair_t, *mc_visited_pair_t;
305 mc_pair_t MC_pair_new(void);
306 void MC_pair_delete(mc_pair_t);
307 void mc_pair_free_voidp(void *p);
308 mc_visited_pair_t MC_visited_pair_new(int pair_num, xbt_automaton_state_t automaton_state, xbt_dynar_t atomic_propositions);
309 void MC_visited_pair_delete(mc_visited_pair_t p);
311 void MC_ddfs_init(void);
313 void MC_show_stack_liveness(xbt_fifo_t stack);
314 void MC_dump_stack_liveness(xbt_fifo_t stack);
317 /********************************** Variables with DWARF **********************************/
319 struct s_mc_object_info {
321 char *start_exec, *end_exec; // Executable segment
322 char *start_rw, *end_rw; // Read-write segment
323 char *start_ro, *end_ro; // read-only segment
324 xbt_dict_t local_variables; // xbt_dict_t<frame_name, dw_frame_t>
325 xbt_dynar_t global_variables; // xbt_dynar_t<dw_variable_t>
326 xbt_dict_t types; // xbt_dict_t<origin as hexadecimal string, dw_type_t>
327 xbt_dict_t types_by_name; // xbt_dict_t<name, dw_type_t> (full defined type only)
330 mc_object_info_t MC_new_object_info(void);
331 mc_object_info_t MC_find_object_info(memory_map_t maps, char* name);
332 void MC_free_object_info(mc_object_info_t* p);
334 void MC_dwarf_get_variables(mc_object_info_t info);
335 void MC_dwarf_get_variables_libdw(mc_object_info_t info);
336 const char* MC_dwarf_attrname(int attr);
337 const char* MC_dwarf_tagname(int tag);
339 extern mc_object_info_t mc_libsimgrid_info;
340 extern mc_object_info_t mc_binary_info;
356 } e_dw_location_type;
358 typedef struct s_dw_location{
359 e_dw_location_type type;
377 unsigned short int deref_size;
385 long unsigned int value;
390 long signed int value;
393 unsigned int plus_uconst;
396 }s_dw_location_t, *dw_location_t;
398 typedef struct s_dw_location_entry{
401 dw_location_t location;
402 }s_dw_location_entry_t, *dw_location_entry_t;
404 typedef struct s_dw_variable{
405 Dwarf_Off dwarf_offset; /* Global offset of the field. */
411 dw_location_t location;
414 }s_dw_variable_t, *dw_variable_t;
416 typedef struct s_dw_frame{
420 dw_location_t frame_base;
421 xbt_dynar_t /* <dw_variable_t> */ variables; /* Cannot use dict, there may be several variables with the same name (in different lexical blocks)*/
422 unsigned long int start; /* DWARF offset of the subprogram */
423 unsigned long int end; /* Dwarf offset of the next sibling */
424 }s_dw_frame_t, *dw_frame_t;
426 void dw_type_free(dw_type_t t);
427 void dw_variable_free(dw_variable_t v);
428 void dw_variable_free_voidp(void *t);
430 void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t variable);
431 void MC_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
432 void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
433 void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
435 /********************************** DWARF **********************************/
437 Dwarf_Off MC_dwarf_resolve_location(unw_cursor_t* c, dw_location_t location, void* frame_pointer_address);
438 void* mc_find_frame_base(unw_word_t ip, dw_frame_t frame, unw_cursor_t* unw_cursor);
440 /********************************** Miscellaneous **********************************/
442 typedef struct s_local_variable{
449 }s_local_variable_t, *local_variable_t;
451 /********************************* Communications pattern ***************************/
453 typedef struct s_mc_comm_pattern{
456 e_smx_comm_type_t type;
458 unsigned long src_proc;
459 unsigned long dst_proc;
464 }s_mc_comm_pattern_t, *mc_comm_pattern_t;
466 extern xbt_dynar_t communications_pattern;
468 void get_comm_pattern(xbt_dynar_t communications_pattern, smx_simcall_t request, int call);
470 /* *********** Sets *********** */
472 typedef struct s_mc_address_set *mc_address_set_t;
474 mc_address_set_t mc_address_set_new();
475 mc_address_set_t mc_address_set_free(mc_address_set_t* p);
476 void mc_address_add(mc_address_set_t p, const void* value);
477 bool mc_address_test(mc_address_set_t p, const void* value);
479 /* *********** Hash *********** */
481 uint64_t mc_hash_processes_state(int num_state);
483 #define MC_USE_SNAPSHOT_HASH 1