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"
24 /****************************** Snapshots ***********************************/
26 typedef struct s_mc_mem_region{
31 } s_mc_mem_region_t, *mc_mem_region_t;
33 typedef struct s_mc_snapshot{
35 mc_mem_region_t *regions;
36 } s_mc_snapshot_t, *mc_snapshot_t;
38 extern char *prog_name;
40 void MC_take_snapshot(mc_snapshot_t);
41 void MC_take_snapshot_liveness(mc_snapshot_t s);
42 void MC_restore_snapshot(mc_snapshot_t);
43 void MC_free_snapshot(mc_snapshot_t);
46 /********************************* MC Global **********************************/
47 extern double *mc_time;
49 /* Bound of the MC depth-first search algorithm */
50 #define MAX_DEPTH 1000
51 #define MAX_DEPTH_LIVENESS 500
53 int MC_deadlock_check(void);
54 void MC_replay(xbt_fifo_t stack, int start);
55 void MC_replay_liveness(xbt_fifo_t stack, int all_stack);
56 void MC_wait_for_requests(void);
57 void MC_get_enabled_processes();
58 void MC_show_deadlock(smx_simcall_t req);
59 void MC_show_stack_safety(xbt_fifo_t stack);
60 void MC_dump_stack_safety(xbt_fifo_t stack);
62 /********************************* Requests ***********************************/
63 int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
64 char* MC_request_to_string(smx_simcall_t req, int value);
65 unsigned int MC_request_testany_fail(smx_simcall_t req);
66 /*int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
67 int MC_request_is_visible(smx_simcall_t req);
68 int MC_request_is_enabled(smx_simcall_t req);
69 int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx);
70 int MC_process_is_enabled(smx_process_t process);
73 /******************************** States **************************************/
74 /* Possible exploration status of a process in a state */
76 MC_NOT_INTERLEAVE=0, /* Do not interleave (do not execute) */
77 MC_INTERLEAVE, /* Interleave the process (one or more request) */
78 MC_DONE /* Already interleaved */
79 } e_mc_process_state_t;
81 /* On every state, each process has an entry of the following type */
82 typedef struct mc_procstate{
83 e_mc_process_state_t state; /* Exploration control information */
84 unsigned int interleave_count; /* Number of times that the process was
86 } s_mc_procstate_t, *mc_procstate_t;
88 /* An exploration state is composed of: */
89 typedef struct mc_state {
90 unsigned long max_pid; /* Maximum pid at state's creation time */
91 mc_procstate_t proc_status; /* State's exploration status by process */
92 s_smx_action_t internal_comm; /* To be referenced by the internal_req */
93 s_smx_simcall_t internal_req; /* Internal translation of request */
94 s_smx_simcall_t executed_req; /* The executed request of the state */
95 int req_num; /* The request number (in the case of a
96 multi-request like waitany ) */
97 mc_snapshot_t system_state; /* Snapshot of system state */
98 } s_mc_state_t, *mc_state_t;
100 extern xbt_fifo_t mc_stack_safety_stateless;
102 mc_state_t MC_state_new(void);
103 void MC_state_delete(mc_state_t state);
104 void MC_state_interleave_process(mc_state_t state, smx_process_t process);
105 unsigned int MC_state_interleave_size(mc_state_t state);
106 int MC_state_process_is_done(mc_state_t state, smx_process_t process);
107 void MC_state_set_executed_request(mc_state_t state, smx_simcall_t req, int value);
108 smx_simcall_t MC_state_get_executed_request(mc_state_t state, int *value);
109 smx_simcall_t MC_state_get_internal_request(mc_state_t state);
110 smx_simcall_t MC_state_get_request(mc_state_t state, int *value);
112 /****************************** Statistics ************************************/
113 typedef struct mc_stats {
114 unsigned long state_size;
115 unsigned long visited_states;
116 unsigned long expanded_states;
117 unsigned long executed_transitions;
118 } s_mc_stats_t, *mc_stats_t;
120 typedef struct mc_stats_pair {
121 //unsigned long pair_size;
122 unsigned long visited_pairs;
123 unsigned long expanded_pairs;
124 unsigned long executed_transitions;
125 } s_mc_stats_pair_t, *mc_stats_pair_t;
127 extern mc_stats_t mc_stats;
128 extern mc_stats_pair_t mc_stats_pair;
130 void MC_print_statistics(mc_stats_t);
131 void MC_print_statistics_pairs(mc_stats_pair_t);
133 /********************************** MEMORY ******************************/
134 /* The possible memory modes for the modelchecker are standard and raw. */
135 /* Normally the system should operate in std, for switching to raw mode */
136 /* you must wrap the code between MC_SET_RAW_MODE and MC_UNSET_RAW_MODE */
138 extern void *std_heap;
139 extern void *raw_heap;
142 /* FIXME: Horrible hack! because the mmalloc library doesn't provide yet of */
143 /* an API to query about the status of a heap, we simply call mmstats and */
144 /* because I now how does structure looks like, then I redefine it here */
146 /* struct mstats { */
147 /* size_t bytes_total; /\* Total size of the heap. *\/ */
148 /* size_t chunks_used; /\* Chunks allocated by the user. *\/ */
149 /* size_t bytes_used; /\* Byte total of user-allocated chunks. *\/ */
150 /* size_t chunks_free; /\* Chunks in the free list. *\/ */
151 /* size_t bytes_free; /\* Byte total of chunks in the free list. *\/ */
154 #define MC_SET_RAW_MEM mmalloc_set_current_heap(raw_heap)
155 #define MC_UNSET_RAW_MEM mmalloc_set_current_heap(std_heap)
157 extern int raw_mem_set;
159 /******************************* MEMORY MAPPINGS ***************************/
160 /* These functions and data structures implements a binary interface for */
161 /* the proc maps ascii interface */
163 /* Each field is defined as documented in proc's manual page */
164 typedef struct s_map_region {
166 void *start_addr; /* Start address of the map */
167 void *end_addr; /* End address of the map */
168 int prot; /* Memory protection */
169 int flags; /* Aditional memory flags */
170 void *offset; /* Offset in the file/whatever */
171 char dev_major; /* Major of the device */
172 char dev_minor; /* Minor of the device */
173 unsigned long inode; /* Inode in the device */
174 char *pathname; /* Path name of the mapped file */
178 typedef struct s_memory_map {
180 s_map_region_t *regions; /* Pointer to an array of regions */
181 int mapsize; /* Number of regions in the memory */
183 } s_memory_map_t, *memory_map_t;
185 memory_map_t get_memory_map(void);
186 void free_memory_map(memory_map_t map);
187 void get_plt_section(void);
190 /********************************** DPOR for safety **************************************/
196 extern e_mc_reduce_t mc_reduce_kind;
198 void MC_dpor_init(void);
200 void MC_dpor_exit(void);
201 void MC_init_safety(void);
204 /********************************** Double-DFS for liveness property**************************************/
206 extern mc_snapshot_t initial_snapshot_liveness;
207 extern xbt_automaton_t _mc_property_automaton;
210 typedef struct s_mc_pair{
211 mc_snapshot_t system_state;
212 mc_state_t graph_state;
213 xbt_state_t automaton_state;
214 }s_mc_pair_t, *mc_pair_t;
216 typedef struct s_mc_pair_reached{
218 xbt_state_t automaton_state;
219 xbt_dynar_t prop_ato;
220 mc_snapshot_t system_state;
221 }s_mc_pair_reached_t, *mc_pair_reached_t;
223 int MC_automaton_evaluate_label(xbt_exp_label_t l);
224 mc_pair_t new_pair(mc_snapshot_t sn, mc_state_t sg, xbt_state_t st);
226 int reached(xbt_state_t st);
227 void set_pair_reached(xbt_state_t st);
228 int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2);
229 void MC_pair_delete(mc_pair_t pair);
230 void MC_exit_liveness(void);
231 mc_state_t MC_state_pair_new(void);
233 /* **** Double-DFS stateless **** */
235 typedef struct s_mc_pair_stateless{
236 mc_state_t graph_state;
237 xbt_state_t automaton_state;
239 }s_mc_pair_stateless_t, *mc_pair_stateless_t;
241 extern xbt_fifo_t mc_stack_liveness;
243 mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st, int r);
244 void MC_ddfs_init(void);
245 void MC_ddfs(int search_cycle);
246 void MC_show_stack_liveness(xbt_fifo_t stack);
247 void MC_dump_stack_liveness(xbt_fifo_t stack);
248 void MC_pair_stateless_delete(mc_pair_stateless_t pair);
250 /********************************** Configuration of MC **************************************/
251 extern xbt_fifo_t mc_stack_safety;
253 extern int _surf_mc_checkpoint;
254 extern char* _surf_mc_property_file;
256 /****** Core dump ******/
258 int create_dump(int pair);