1 /* Copyright (c) 2007-2015. 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. */
7 #ifndef SIMGRID_MC_PRIVATE_H
8 #define SIMGRID_MC_PRIVATE_H
10 #include "simgrid_config.h"
12 #include <sys/types.h>
19 #include <elfutils/libdw.h>
21 #include <simgrid/msg.h>
23 #include <xbt/config.h>
27 #include "mc/datatypes.h"
28 #include "src/mc/mc_base.h"
30 #include "src/simix/smx_private.h"
31 #include "src/xbt/mmalloc/mmprivate.h"
34 #include "src/mc/mc_forward.hpp"
35 #include "src/xbt/memory_map.hpp"
38 #include "src/mc/mc_protocol.h"
42 /********************************* MC Global **********************************/
44 XBT_PRIVATE void MC_init_dot_output();
46 XBT_PRIVATE extern FILE *dot_output;
48 XBT_PRIVATE extern int user_max_depth_reached;
50 XBT_PRIVATE void MC_replay(xbt_fifo_t stack);
51 XBT_PRIVATE void MC_show_deadlock(smx_simcall_t req);
52 XBT_PRIVATE void MC_show_stack_safety(xbt_fifo_t stack);
53 XBT_PRIVATE void MC_dump_stack_safety(xbt_fifo_t stack);
54 XBT_PRIVATE void MC_show_non_termination(void);
56 /** Stack (of `mc_state_t`) representing the current position of the
57 * the MC in the exploration graph
59 * It is managed by its head (`xbt_fifo_shift` and `xbt_fifo_unshift`).
61 XBT_PRIVATE extern xbt_fifo_t mc_stack;
71 * \brief Find a suitable subrange of candidate duplicates for a given state
72 * \param list dynamic array of states/pairs with candidate duplicates of the current state;
73 * \param ref current state/pair;
74 * \param min (output) index of the beginning of the the subrange
75 * \param max (output) index of the enf of the subrange
77 * Given a suitably ordered array of states/pairs, this function extracts a subrange
78 * (with index *min <= i <= *max) with candidate duplicates of the given state/pair.
79 * This function uses only fast discriminating criterions and does not use the
80 * full state/pair comparison algorithms.
82 * The states/pairs in list MUST be ordered using a (given) weak order
83 * (based on nb_processes and heap_bytes_used).
84 * The subrange is the subrange of "equivalence" of the given state/pair.
86 // TODO, it would make sense to use std::set instead
87 // U = some pointer of T (T*, unique_ptr<T>, shared_ptr<T>)
88 template<class U, class T>
89 int get_search_interval(
90 U* list, std::size_t count, T *ref, int *min, int *max)
92 int nb_processes = ref->nb_processes;
93 int heap_bytes_used = ref->heap_bytes_used;
98 while (start <= end) {
99 cursor = (start + end) / 2;
100 int nb_processes_test = list[cursor]->nb_processes;
101 int heap_bytes_used_test = list[cursor]->heap_bytes_used;
103 if (nb_processes_test < nb_processes)
105 else if (nb_processes_test > nb_processes)
107 else if (heap_bytes_used_test < heap_bytes_used)
109 else if (heap_bytes_used_test > heap_bytes_used)
112 *min = *max = cursor;
113 int previous_cursor = cursor - 1;
114 while (previous_cursor >= 0) {
115 nb_processes_test = list[previous_cursor]->nb_processes;
116 heap_bytes_used_test = list[previous_cursor]->heap_bytes_used;
117 if (nb_processes_test != nb_processes || heap_bytes_used_test != heap_bytes_used)
119 *min = previous_cursor;
122 size_t next_cursor = cursor + 1;
123 while (next_cursor < count) {
124 nb_processes_test = list[next_cursor]->nb_processes;
125 heap_bytes_used_test = list[next_cursor]->heap_bytes_used;
126 if (nb_processes_test != nb_processes || heap_bytes_used_test != heap_bytes_used)
144 /****************************** Statistics ************************************/
146 typedef struct mc_stats {
147 unsigned long state_size;
148 unsigned long visited_states;
149 unsigned long visited_pairs;
150 unsigned long expanded_states;
151 unsigned long expanded_pairs;
152 unsigned long executed_transitions;
153 } s_mc_stats_t, *mc_stats_t;
155 XBT_PRIVATE extern mc_stats_t mc_stats;
157 XBT_PRIVATE void MC_print_statistics(mc_stats_t stats);
159 /********************************** Snapshot comparison **********************************/
164 /********************************** Miscellaneous **********************************/
166 XBT_PRIVATE void MC_report_assertion_error(void);
167 XBT_PRIVATE void MC_report_crash(int status);
176 XBT_PRIVATE void find_object_address(
177 std::vector<simgrid::xbt::VmMap> const& maps, simgrid::mc::ObjectInformation* result);
180 int snapshot_compare(int num1, simgrid::mc::Snapshot* s1, int num2, simgrid::mc::Snapshot* s2);