X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/55e441525895975f97dbd27af2e2e909bb4ba651..9b7c007d68cc9aabd52746479c68a8287a087fe3:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index 5ca58db54e..bf677ae9ca 100644 --- a/src/mc/mc_global.c +++ b/src/mc/mc_global.c @@ -4,1020 +4,303 @@ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ +#include + +#include "mc_base.h" + +#ifndef _XBT_WIN32 #include -#include #include #include -#include -#include +#endif #include "simgrid/sg_config.h" #include "../surf/surf_private.h" #include "../simix/smx_private.h" -#include "../xbt/mmalloc/mmprivate.h" #include "xbt/fifo.h" -#include "mc_private.h" #include "xbt/automaton.h" #include "xbt/dict.h" -XBT_LOG_NEW_CATEGORY(mc, "All MC categories"); +#ifdef HAVE_MC +#include +#include + +#include "../xbt/mmalloc/mmprivate.h" +#include "mc_object_info.h" +#include "mc_comm_pattern.h" +#include "mc_request.h" +#include "mc_safety.h" +#include "mc_memory_map.h" +#include "mc_snapshot.h" +#include "mc_liveness.h" +#include "mc_private.h" +#include "mc_unw.h" +#endif +#include "mc_record.h" +#include "mc_protocol.h" +#include "mc_client.h" + XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, "Logging specific to MC (global)"); -/* Configuration support */ -e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset; +e_mc_mode_t mc_mode; -int _sg_do_model_check = 0; -int _sg_mc_checkpoint=0; -char* _sg_mc_property_file=NULL; -int _sg_mc_timeout=0; -int _sg_mc_hash=0; -int _sg_mc_max_depth=1000; -int _sg_mc_visited=0; -char *_sg_mc_dot_output_file = NULL; -int _sg_mc_comms_determinism=0; -int _sg_mc_send_determinism=0; +double *mc_time = NULL; +#ifdef HAVE_MC int user_max_depth_reached = 0; -void _mc_cfg_cb_reduce(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a reduction strategy after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - char *val= xbt_cfg_get_string(_sg_cfg_set, name); - if (!strcasecmp(val,"none")) { - mc_reduce_kind = e_mc_reduce_none; - } else if (!strcasecmp(val,"dpor")) { - mc_reduce_kind = e_mc_reduce_dpor; - } else { - xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name); - } -} - -void _mc_cfg_cb_checkpoint(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a checkpointing value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_checkpoint = xbt_cfg_get_int(_sg_cfg_set, name); -} -void _mc_cfg_cb_property(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a property after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_property_file= xbt_cfg_get_string(_sg_cfg_set, name); -} - -void _mc_cfg_cb_timeout(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a value to enable/disable timeout for wait requests after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_timeout= xbt_cfg_get_boolean(_sg_cfg_set, name); -} - -void _mc_cfg_cb_hash(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a value to enable/disable the use of global hash to speedup state comparaison, but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_hash= xbt_cfg_get_boolean(_sg_cfg_set, name); -} - -void _mc_cfg_cb_max_depth(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a max depth value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_max_depth= xbt_cfg_get_int(_sg_cfg_set, name); -} - -void _mc_cfg_cb_visited(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a number of stored visited states after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_visited= xbt_cfg_get_int(_sg_cfg_set, name); -} - -void _mc_cfg_cb_dot_output(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a file name for a dot output of graph state after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_dot_output_file= xbt_cfg_get_string(_sg_cfg_set, name); -} - -void _mc_cfg_cb_comms_determinism(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a value to enable/disable the detection of determinism in the communications schemes after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_comms_determinism= xbt_cfg_get_boolean(_sg_cfg_set, name); -} - -void _mc_cfg_cb_send_determinism(const char *name, int pos) { - if (_sg_cfg_init_status && !_sg_do_model_check) { - xbt_die("You are specifying a value to enable/disable the detection of send-determinism in the communications schemes after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); - } - _sg_mc_send_determinism= xbt_cfg_get_boolean(_sg_cfg_set, name); -} - /* MC global data structures */ mc_state_t mc_current_state = NULL; char mc_replay_mode = FALSE; -double *mc_time = NULL; + __thread mc_comparison_times_t mc_comp_times = NULL; __thread double mc_snapshot_comparison_time; mc_stats_t mc_stats = NULL; - -/* Safety */ -xbt_fifo_t mc_stack_safety = NULL; -mc_global_t initial_state_safety = NULL; +mc_global_t initial_global_state = NULL; +xbt_fifo_t mc_stack = NULL; /* Liveness */ -xbt_fifo_t mc_stack_liveness = NULL; -mc_global_t initial_state_liveness = NULL; -int compare; - xbt_automaton_t _mc_property_automaton = NULL; -/* Variables */ -mc_object_info_t mc_libsimgrid_info = NULL; -mc_object_info_t mc_binary_info = NULL; - -mc_object_info_t mc_object_infos[2] = { NULL, NULL }; -size_t mc_object_infos_size = 2; - -/* Ignore mechanism */ -extern xbt_dynar_t mc_heap_comparison_ignore; -extern xbt_dynar_t stacks_areas; - /* Dot output */ FILE *dot_output = NULL; -const char* colors[13]; - - -/******************************* DWARF Information *******************************/ -/**********************************************************************************/ - -/************************** Free functions *************************/ - -void mc_frame_free(dw_frame_t frame){ - xbt_free(frame->name); - mc_dwarf_location_list_clear(&(frame->frame_base)); - xbt_dynar_free(&(frame->variables)); - xbt_dynar_free(&(frame->scopes)); - xbt_free(frame); -} - -void dw_type_free(dw_type_t t){ - xbt_free(t->name); - xbt_free(t->dw_type_id); - xbt_dynar_free(&(t->members)); - mc_dwarf_expression_clear(&t->location); - xbt_free(t); -} - -void dw_variable_free(dw_variable_t v){ - if(v){ - xbt_free(v->name); - xbt_free(v->type_origin); +const char *colors[13]; - if(v->locations.locations) - mc_dwarf_location_list_clear(&v->locations); - xbt_free(v); - } -} - -void dw_variable_free_voidp(void *t){ - dw_variable_free((dw_variable_t) * (void **) t); -} - -// ***** object_info - - - -mc_object_info_t MC_new_object_info(void) { - mc_object_info_t res = xbt_new0(s_mc_object_info_t, 1); - res->subprograms = xbt_dict_new_homogeneous((void (*)(void*))mc_frame_free); - res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp); - res->types = xbt_dict_new_homogeneous((void (*)(void*))dw_type_free); - res->full_types_by_name = xbt_dict_new_homogeneous(NULL); - return res; -} -void MC_free_object_info(mc_object_info_t* info) { - xbt_free(&(*info)->file_name); - xbt_dict_free(&(*info)->subprograms); - xbt_dynar_free(&(*info)->global_variables); - xbt_dict_free(&(*info)->types); - xbt_dict_free(&(*info)->full_types_by_name); - xbt_free(info); - xbt_dynar_free(&(*info)->functions_index); - *info = NULL; -} - -// ***** Helpers - -void* MC_object_base_address(mc_object_info_t info) { - if(info->flags & MC_OBJECT_INFO_EXECUTABLE) - return 0; - void* result = info->start_exec; - if(info->start_rw!=NULL && result > (void*) info->start_rw) result = info->start_rw; - if(info->start_ro!=NULL && result > (void*) info->start_ro) result = info->start_ro; - return result; -} - -// ***** Functions index - -static int MC_compare_frame_index_items(mc_function_index_item_t a, mc_function_index_item_t b) { - if(a->low_pc < b->low_pc) - return -1; - else if(a->low_pc == b->low_pc) - return 0; - else - return 1; -} - -static void MC_make_functions_index(mc_object_info_t info) { - xbt_dynar_t index = xbt_dynar_new(sizeof(s_mc_function_index_item_t), NULL); - - // Populate the array: - dw_frame_t frame = NULL; - xbt_dict_cursor_t cursor; - char* key; - xbt_dict_foreach(info->subprograms, cursor, key, frame) { - if(frame->low_pc==NULL) - continue; - s_mc_function_index_item_t entry; - entry.low_pc = frame->low_pc; - entry.high_pc = frame->high_pc; - entry.function = frame; - xbt_dynar_push(index, &entry); - } - - mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(index, 0); - - // Sort the array by low_pc: - qsort(base, - xbt_dynar_length(index), - sizeof(s_mc_function_index_item_t), - (int (*)(const void *, const void *))MC_compare_frame_index_items); - - info->functions_index = index; -} - -mc_object_info_t MC_ip_find_object_info(void* ip) { - size_t i; - for(i=0; i!=mc_object_infos_size; ++i) { - if(ip >= (void*)mc_object_infos[i]->start_exec && ip <= (void*)mc_object_infos[i]->end_exec) { - return mc_object_infos[i]; - } - } - return NULL; -} - -static dw_frame_t MC_find_function_by_ip_and_object(void* ip, mc_object_info_t info) { - xbt_dynar_t dynar = info->functions_index; - mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(dynar, 0); - int i = 0; - int j = xbt_dynar_length(dynar) - 1; - while(j>=i) { - int k = i + ((j-i)/2); - if(ip < base[k].low_pc) { - j = k-1; - } else if(ip >= base[k].high_pc) { - i = k+1; - } else { - return base[k].function; - } - } - return NULL; -} - -dw_frame_t MC_find_function_by_ip(void* ip) { - mc_object_info_t info = MC_ip_find_object_info(ip); - if(info==NULL) - return NULL; - else - return MC_find_function_by_ip_and_object(ip, info); -} - -static void MC_post_process_variables(mc_object_info_t info) { - unsigned cursor = 0; - dw_variable_t variable = NULL; - xbt_dynar_foreach(info->global_variables, cursor, variable) { - if(variable->type_origin) { - variable->type = xbt_dict_get_or_null(info->types, variable->type_origin); - } - } -} - -static void mc_post_process_scope(mc_object_info_t info, dw_frame_t scope) { - - if(scope->tag == DW_TAG_inlined_subroutine) { - - // Attach correct namespaced name in inlined subroutine: - char* key = bprintf("%" PRIx64, (uint64_t) scope->abstract_origin_id); - dw_frame_t abstract_origin = xbt_dict_get_or_null(info->subprograms, key); - xbt_assert(abstract_origin, "Could not lookup abstract origin %s", key); - xbt_free(key); - scope->name = xbt_strdup(abstract_origin->name); - - } - - // Direct: - unsigned cursor = 0; - dw_variable_t variable = NULL; - xbt_dynar_foreach(scope->variables, cursor, variable) { - if(variable->type_origin) { - variable->type = xbt_dict_get_or_null(info->types, variable->type_origin); - } - } - - // Recursive post-processing of nested-scopes: - dw_frame_t nested_scope = NULL; - xbt_dynar_foreach(scope->scopes, cursor, nested_scope) - mc_post_process_scope(info, nested_scope); - -} - -static void MC_post_process_functions(mc_object_info_t info) { - xbt_dict_cursor_t cursor; - char* key; - dw_frame_t subprogram = NULL; - xbt_dict_foreach(info->subprograms, cursor, key, subprogram) { - mc_post_process_scope(info, subprogram); - } -} - -/** \brief Finds informations about a given shared object/executable */ -mc_object_info_t MC_find_object_info(memory_map_t maps, char* name, int executable) { - mc_object_info_t result = MC_new_object_info(); - if(executable) - result->flags |= MC_OBJECT_INFO_EXECUTABLE; - result->file_name = xbt_strdup(name); - MC_find_object_address(maps, result); - MC_dwarf_get_variables(result); - MC_post_process_types(result); - MC_post_process_variables(result); - MC_post_process_functions(result); - MC_make_functions_index(result); - return result; -} - -/*************************************************************************/ - -static int MC_dwarf_get_variable_index(xbt_dynar_t variables, char* var, void *address){ - - if(xbt_dynar_is_empty(variables)) - return 0; - - unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(variables) - 1; - dw_variable_t var_test = NULL; - - while(start <= end){ - cursor = (start + end) / 2; - var_test = (dw_variable_t)xbt_dynar_get_as(variables, cursor, dw_variable_t); - if(strcmp(var_test->name, var) < 0){ - start = cursor + 1; - }else if(strcmp(var_test->name, var) > 0){ - end = cursor - 1; - }else{ - if(address){ /* global variable */ - if(var_test->address == address) - return -1; - if(var_test->address > address) - end = cursor - 1; - else - start = cursor + 1; - }else{ /* local variable */ - return -1; - } - } - } - - if(strcmp(var_test->name, var) == 0){ - if(address && var_test->address < address) - return cursor+1; - else - return cursor; - }else if(strcmp(var_test->name, var) < 0) - return cursor+1; - else - return cursor; - -} - -void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t variable) { - int index = MC_dwarf_get_variable_index(info->global_variables, variable->name, variable->address); - if (index != -1) - xbt_dynar_insert_at(info->global_variables, index, &variable); - // TODO, else ? -} - -void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable) { - xbt_assert(frame, "Frame is NULL"); - int index = MC_dwarf_get_variable_index(frame->variables, variable->name, NULL); - if (index != -1) - xbt_dynar_insert_at(frame->variables, index, &variable); - // TODO, else ? -} - -void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable) { - if(variable->global) - MC_dwarf_register_global_variable(info, variable); - else if(frame==NULL) - xbt_die("No frame for this local variable"); - else - MC_dwarf_register_non_global_variable(info, frame, variable); -} - - -/******************************* Ignore mechanism *******************************/ +/******************************* Initialisation of MC *******************************/ /*********************************************************************************/ -xbt_dynar_t mc_checkpoint_ignore; - -typedef struct s_mc_stack_ignore_variable{ - char *var_name; - char *frame; -}s_mc_stack_ignore_variable_t, *mc_stack_ignore_variable_t; - -/**************************** Free functions ******************************/ - -static void stack_ignore_variable_free(mc_stack_ignore_variable_t v){ - xbt_free(v->var_name); - xbt_free(v->frame); - xbt_free(v); -} - -static void stack_ignore_variable_free_voidp(void *v){ - stack_ignore_variable_free((mc_stack_ignore_variable_t) * (void **) v); -} - -void heap_ignore_region_free(mc_heap_ignore_region_t r){ - xbt_free(r); -} - -void heap_ignore_region_free_voidp(void *r){ - heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r); -} +static void MC_init_dot_output() +{ /* FIXME : more colors */ -static void checkpoint_ignore_region_free(mc_checkpoint_ignore_region_t r){ - xbt_free(r); -} - -static void checkpoint_ignore_region_free_voidp(void *r){ - checkpoint_ignore_region_free((mc_checkpoint_ignore_region_t) * (void **) r); -} - -/***********************************************************************/ - -void MC_ignore_heap(void *address, size_t size){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; - - mc_heap_ignore_region_t region = NULL; - region = xbt_new0(s_mc_heap_ignore_region_t, 1); - region->address = address; - region->size = size; - - region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1; - - if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){ - region->fragment = -1; - ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_block.ignore++; - }else{ - region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type; - ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_frag.ignore[region->fragment]++; - } - - if(mc_heap_comparison_ignore == NULL){ - mc_heap_comparison_ignore = xbt_dynar_new(sizeof(mc_heap_ignore_region_t), heap_ignore_region_free_voidp); - xbt_dynar_push(mc_heap_comparison_ignore, ®ion); - if(!raw_mem_set) - MC_UNSET_RAW_MEM; - return; - } - - unsigned int cursor = 0; - mc_heap_ignore_region_t current_region = NULL; - int start = 0; - int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1; - - while(start <= end){ - cursor = (start + end) / 2; - current_region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t); - if(current_region->address == address){ - heap_ignore_region_free(region); - if(!raw_mem_set) - MC_UNSET_RAW_MEM; - return; - }else if(current_region->address < address){ - start = cursor + 1; - }else{ - end = cursor - 1; - } - } - - if(current_region->address < address) - xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor + 1, ®ion); - else - xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor, ®ion); - - if(!raw_mem_set) - MC_UNSET_RAW_MEM; -} - -void MC_remove_ignore_heap(void *address, size_t size){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; - - unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1; - mc_heap_ignore_region_t region; - int ignore_found = 0; - - while(start <= end){ - cursor = (start + end) / 2; - region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t); - if(region->address == address){ - ignore_found = 1; - break; - }else if(region->address < address){ - start = cursor + 1; - }else{ - if((char * )region->address <= ((char *)address + size)){ - ignore_found = 1; - break; - }else{ - end = cursor - 1; - } - } - } - - if(ignore_found == 1){ - xbt_dynar_remove_at(mc_heap_comparison_ignore, cursor, NULL); - MC_remove_ignore_heap(address, size); - } - - if(!raw_mem_set) - MC_UNSET_RAW_MEM; - -} - -void MC_ignore_global_variable(const char *name){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; - - xbt_assert(mc_libsimgrid_info, "MC subsystem not initialized"); - - unsigned int cursor = 0; - dw_variable_t current_var; - int start = 0; - int end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1; - - while(start <= end){ - cursor = (start + end) /2; - current_var = (dw_variable_t)xbt_dynar_get_as(mc_libsimgrid_info->global_variables, cursor, dw_variable_t); - if(strcmp(current_var->name, name) == 0){ - xbt_dynar_remove_at(mc_libsimgrid_info->global_variables, cursor, NULL); - start = 0; - end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1; - }else if(strcmp(current_var->name, name) < 0){ - start = cursor + 1; - }else{ - end = cursor - 1; - } - } - - if(!raw_mem_set) - MC_UNSET_RAW_MEM; -} - -/** \brief Ignore a local variable in a scope - * - * Ignore all instances of variables with a given name in - * any (possibly inlined) subprogram with a given namespaced - * name. - * - * \param var_name Name of the local variable (or parameter to ignore) - * \param subprogram_name Name of the subprogram fo ignore (NULL for any) - * \param subprogram (possibly inlined) Subprogram of the scope - * \param scope Current scope - */ -static void mc_ignore_local_variable_in_scope( - const char *var_name, const char *subprogram_name, - dw_frame_t subprogram, dw_frame_t scope) { - // Processing of direct variables: - - // If the current subprogram matche the given name: - if(subprogram_name==NULL || strcmp(subprogram_name, subprogram->name)==0) { - - // Try to find the variable and remove it: - int start = 0; - int end = xbt_dynar_length(scope->variables) - 1; - - // Dichotomic search: - while(start <= end){ - int cursor = (start + end) / 2; - dw_variable_t current_var = (dw_variable_t)xbt_dynar_get_as(scope->variables, cursor, dw_variable_t); - - int compare = strcmp(current_var->name, var_name); - if(compare == 0){ - // Variable found, remove it: - xbt_dynar_remove_at(scope->variables, cursor, NULL); - - // and start again: - start = 0; - end = xbt_dynar_length(scope->variables) - 1; - }else if(compare < 0){ - start = cursor + 1; - }else{ - end = cursor - 1; - } - } - - } - - // And recursive processing in nested scopes: - unsigned cursor = 0; - dw_frame_t nested_scope = NULL; - xbt_dynar_foreach(scope->scopes, cursor, nested_scope) { - // The new scope may be an inlined subroutine, in this case we want to use its - // namespaced name in recursive calls: - dw_frame_t nested_subprogram = nested_scope->tag == DW_TAG_inlined_subroutine ? nested_scope : subprogram; + colors[0] = "blue"; + colors[1] = "red"; + colors[2] = "green3"; + colors[3] = "goldenrod"; + colors[4] = "brown"; + colors[5] = "purple"; + colors[6] = "magenta"; + colors[7] = "turquoise4"; + colors[8] = "gray25"; + colors[9] = "forestgreen"; + colors[10] = "hotpink"; + colors[11] = "lightblue"; + colors[12] = "tan"; - mc_ignore_local_variable_in_scope(var_name, subprogram_name, nested_subprogram, nested_scope); - } -} + dot_output = fopen(_sg_mc_dot_output_file, "w"); -static void MC_ignore_local_variable_in_object(const char *var_name, const char *subprogram_name, mc_object_info_t info) { - xbt_dict_cursor_t cursor2; - dw_frame_t frame; - char* key; - xbt_dict_foreach(info->subprograms, cursor2, key, frame) { - mc_ignore_local_variable_in_scope(var_name, subprogram_name, frame, frame); + if (dot_output == NULL) { + perror("Error open dot output file"); + xbt_abort(); } -} - -void MC_ignore_local_variable(const char *var_name, const char *frame_name){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - if(strcmp(frame_name, "*") == 0) - frame_name = NULL; - - MC_SET_RAW_MEM; - - MC_ignore_local_variable_in_object(var_name, frame_name, mc_libsimgrid_info); - if(frame_name!=NULL) - MC_ignore_local_variable_in_object(var_name, frame_name, mc_binary_info); - - if(!raw_mem_set) - MC_UNSET_RAW_MEM; -} - -void MC_new_stack_area(void *stack, char *name, void* context, size_t size){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + fprintf(dot_output, + "digraph graphname{\n fixedsize=true; rankdir=TB; ranksep=.25; edge [fontsize=12]; node [fontsize=10, shape=circle,width=.5 ]; graph [resolution=20, fontsize=10];\n"); - MC_SET_RAW_MEM; - - if(stacks_areas == NULL) - stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL); - - stack_region_t region = NULL; - region = xbt_new0(s_stack_region_t, 1); - region->address = stack; - region->process_name = strdup(name); - region->context = context; - region->size = size; - region->block = ((char*)stack - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1; - xbt_dynar_push(stacks_areas, ®ion); - - if(!raw_mem_set) - MC_UNSET_RAW_MEM; } -void MC_ignore(void *addr, size_t size){ - - int raw_mem_set= (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; - - if(mc_checkpoint_ignore == NULL) - mc_checkpoint_ignore = xbt_dynar_new(sizeof(mc_checkpoint_ignore_region_t), checkpoint_ignore_region_free_voidp); - - mc_checkpoint_ignore_region_t region = xbt_new0(s_mc_checkpoint_ignore_region_t, 1); - region->addr = addr; - region->size = size; - - if(xbt_dynar_is_empty(mc_checkpoint_ignore)){ - xbt_dynar_push(mc_checkpoint_ignore, ®ion); - }else{ - - unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(mc_checkpoint_ignore) -1; - mc_checkpoint_ignore_region_t current_region = NULL; - - while(start <= end){ - cursor = (start + end) / 2; - current_region = (mc_checkpoint_ignore_region_t)xbt_dynar_get_as(mc_checkpoint_ignore, cursor, mc_checkpoint_ignore_region_t); - if(current_region->addr == addr){ - if(current_region->size == size){ - checkpoint_ignore_region_free(region); - if(!raw_mem_set) - MC_UNSET_RAW_MEM; - return; - }else if(current_region->size < size){ - start = cursor + 1; - }else{ - end = cursor - 1; - } - }else if(current_region->addr < addr){ - start = cursor + 1; - }else{ - end = cursor - 1; - } - } - - if(current_region->addr == addr){ - if(current_region->size < size){ - xbt_dynar_insert_at(mc_checkpoint_ignore, cursor + 1, ®ion); - }else{ - xbt_dynar_insert_at(mc_checkpoint_ignore, cursor, ®ion); - } - }else if(current_region->addr < addr){ - xbt_dynar_insert_at(mc_checkpoint_ignore, cursor + 1, ®ion); - }else{ - xbt_dynar_insert_at(mc_checkpoint_ignore, cursor, ®ion); - } - } - - if(!raw_mem_set) - MC_UNSET_RAW_MEM; +void MC_init() +{ + MC_init_pid(getpid(), -1); } -/******************************* Initialisation of MC *******************************/ -/*********************************************************************************/ - -static void MC_post_process_object_info(mc_object_info_t info) { - xbt_dict_cursor_t cursor = NULL; - char* key = NULL; - dw_type_t type = NULL; - xbt_dict_foreach(info->types, cursor, key, type){ - - // Resolve full_type: - if(type->name && type->byte_size == 0) { - for(size_t i=0; i!=mc_object_infos_size; ++i) { - dw_type_t same_type = xbt_dict_get_or_null(mc_object_infos[i]->full_types_by_name, type->name); - if(same_type && same_type->name && same_type->byte_size) { - type->full_type = same_type; - break; - } - } +void MC_init_pid(pid_t pid, int socket) +{ + if (mc_mode == MC_MODE_NONE) { + if (getenv(MC_ENV_SOCKET_FD)) { + mc_mode = MC_MODE_CLIENT; + } else { + mc_mode = MC_MODE_STANDALONE; } - } -} - -static void MC_init_debug_info(void) { - XBT_INFO("Get debug information ..."); - - memory_map_t maps = MC_get_memory_map(); - /* Get local variables for state equality detection */ - mc_binary_info = MC_find_object_info(maps, xbt_binary_name, 1); - mc_object_infos[0] = mc_binary_info; - - mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path, 0); - mc_object_infos[1] = mc_libsimgrid_info; - - // Use information of the other objects: - MC_post_process_object_info(mc_binary_info); - MC_post_process_object_info(mc_libsimgrid_info); - - MC_free_memory_map(maps); - XBT_INFO("Get debug information done !"); -} + mc_time = xbt_new0(double, simix_process_maxpid); -void MC_init(){ + /* Initialize the data structures that must be persistent across every + iteration of the model-checker (in RAW memory) */ - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); - compare = 0; + mc_model_checker = MC_model_checker_new(pid, socket); - /* Initialize the data structures that must be persistent across every - iteration of the model-checker (in RAW memory) */ + mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1); - MC_SET_RAW_MEM; - - MC_init_memory_map_info(); - MC_init_debug_info(); - - /* Init parmap */ - parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT); - - MC_UNSET_RAW_MEM; - - /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */ - MC_ignore_local_variable("e", "*"); - MC_ignore_local_variable("__ex_cleanup", "*"); - MC_ignore_local_variable("__ex_mctx_en", "*"); - MC_ignore_local_variable("__ex_mctx_me", "*"); - MC_ignore_local_variable("__xbt_ex_ctx_ptr", "*"); - MC_ignore_local_variable("_log_ev", "*"); - MC_ignore_local_variable("_throw_ctx", "*"); - MC_ignore_local_variable("ctx", "*"); - - MC_ignore_local_variable("self", "simcall_BODY_mc_snapshot"); - MC_ignore_local_variable("next_context", "smx_ctx_sysv_suspend_serial"); - MC_ignore_local_variable("i", "smx_ctx_sysv_suspend_serial"); - - /* Ignore local variable about time used for tracing */ - MC_ignore_local_variable("start_time", "*"); - - MC_ignore_global_variable("compared_pointers"); - MC_ignore_global_variable("mc_comp_times"); - MC_ignore_global_variable("mc_snapshot_comparison_time"); - MC_ignore_global_variable("mc_time"); - MC_ignore_global_variable("counter"); /* Static variable used for tracing */ - MC_ignore_global_variable("maestro_stack_start"); - MC_ignore_global_variable("maestro_stack_end"); - MC_ignore_global_variable("smx_total_comms"); - - MC_ignore_heap(&(simix_global->process_to_run), sizeof(simix_global->process_to_run)); - MC_ignore_heap(&(simix_global->process_that_ran), sizeof(simix_global->process_that_ran)); - MC_ignore_heap(simix_global->process_to_run, sizeof(*(simix_global->process_to_run))); - MC_ignore_heap(simix_global->process_that_ran, sizeof(*(simix_global->process_that_ran))); - - smx_process_t process; - xbt_swag_foreach(process, simix_global->process_list){ - MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup)); - } + /* Initialize statistics */ + mc_stats = xbt_new0(s_mc_stats_t, 1); + mc_stats->state_size = 1; - if(raw_mem_set) - MC_SET_RAW_MEM; + if ((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0] != '\0')) + MC_init_dot_output(); -} + /* Init parmap */ + //parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT); -static void MC_init_dot_output(){ /* FIXME : more colors */ + MC_SET_STD_HEAP; - colors[0] = "blue"; - colors[1] = "red"; - colors[2] = "green3"; - colors[3] = "goldenrod"; - colors[4] = "brown"; - colors[5] = "purple"; - colors[6] = "magenta"; - colors[7] = "turquoise4"; - colors[8] = "gray25"; - colors[9] = "forestgreen"; - colors[10] = "hotpink"; - colors[11] = "lightblue"; - colors[12] = "tan"; + if (_sg_mc_visited > 0 || _sg_mc_liveness) { + /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */ + MC_ignore_local_variable("e", "*"); + MC_ignore_local_variable("__ex_cleanup", "*"); + MC_ignore_local_variable("__ex_mctx_en", "*"); + MC_ignore_local_variable("__ex_mctx_me", "*"); + MC_ignore_local_variable("__xbt_ex_ctx_ptr", "*"); + MC_ignore_local_variable("_log_ev", "*"); + MC_ignore_local_variable("_throw_ctx", "*"); + MC_ignore_local_variable("ctx", "*"); - dot_output = fopen(_sg_mc_dot_output_file, "w"); - - if(dot_output == NULL){ - perror("Error open dot output file"); - xbt_abort(); - } + MC_ignore_local_variable("self", "simcall_BODY_mc_snapshot"); + MC_ignore_local_variable("next_cont" + "ext", "smx_ctx_sysv_suspend_serial"); + MC_ignore_local_variable("i", "smx_ctx_sysv_suspend_serial"); - fprintf(dot_output, "digraph graphname{\n fixedsize=true; rankdir=TB; ranksep=.25; edge [fontsize=12]; node [fontsize=10, shape=circle,width=.5 ]; graph [resolution=20, fontsize=10];\n"); + /* Ignore local variable about time used for tracing */ + MC_ignore_local_variable("start_time", "*"); -} + /* Main MC state: */ + MC_ignore_global_variable("mc_model_checker"); + MC_ignore_global_variable("initial_communications_pattern"); + MC_ignore_global_variable("incomplete_communications_pattern"); + MC_ignore_global_variable("nb_comm_pattern"); -/******************************* Core of MC *******************************/ -/**************************************************************************/ + /* MC __thread variables: */ + MC_ignore_global_variable("mc_diff_info"); + MC_ignore_global_variable("mc_comp_times"); + MC_ignore_global_variable("mc_snapshot_comparison_time"); -void MC_do_the_modelcheck_for_real() { + /* This MC state is used in MC replay as well: */ + MC_ignore_global_variable("mc_time"); - MC_SET_RAW_MEM; - mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1); - MC_UNSET_RAW_MEM; - - if (!_sg_mc_property_file || _sg_mc_property_file[0]=='\0') { - if (mc_reduce_kind==e_mc_reduce_unset) - mc_reduce_kind=e_mc_reduce_dpor; + /* Static variable used for tracing */ + MC_ignore_global_variable("counter"); - XBT_INFO("Check a safety property"); - MC_modelcheck_safety(); + /* SIMIX */ + MC_ignore_global_variable("smx_total_comms"); - } else { + if (mc_mode == MC_MODE_STANDALONE || mc_mode == MC_MODE_CLIENT) { + /* Those requests are handled on the client side and propagated by message + * to the server: */ - if (mc_reduce_kind==e_mc_reduce_unset) - mc_reduce_kind=e_mc_reduce_none; + MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); - XBT_INFO("Check the liveness property %s",_sg_mc_property_file); - MC_automaton_load(_sg_mc_property_file); - MC_modelcheck_liveness(); + smx_process_t process; + xbt_swag_foreach(process, simix_global->process_list) { + MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup)); + } + } + } + + mmalloc_set_current_heap(heap); + + if (mc_mode == MC_MODE_CLIENT) { + // This will move somehwere else: + MC_client_handle_messages(); } + } -void MC_modelcheck_safety(void) +/******************************* Core of MC *******************************/ +/**************************************************************************/ + +static void MC_modelcheck_comm_determinism_init(void) { - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + MC_init(); - /* Check if MC is already initialized */ - if (initial_state_safety) - return; + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); - mc_time = xbt_new0(double, simix_process_maxpid); + /* Create exploration stack */ + mc_stack = xbt_fifo_new(); - /* mc_time refers to clock for each process -> ignore it for heap comparison */ - MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); + MC_SET_STD_HEAP; - /* Initialize the data structures that must be persistent across every - iteration of the model-checker (in RAW memory) */ - - MC_SET_RAW_MEM; + MC_pre_modelcheck_comm_determinism(); - /* Initialize statistics */ - mc_stats = xbt_new0(s_mc_stats_t, 1); - mc_stats->state_size = 1; + MC_SET_MC_HEAP; + initial_global_state = xbt_new0(s_mc_global_t, 1); + initial_global_state->snapshot = MC_take_snapshot(0); + initial_global_state->initial_communications_pattern_done = 0; + initial_global_state->comm_deterministic = 1; + initial_global_state->send_deterministic = 1; + MC_SET_STD_HEAP; - /* Create exploration stack */ - mc_stack_safety = xbt_fifo_new(); + MC_modelcheck_comm_determinism(); - if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) - MC_init_dot_output(); + mmalloc_set_current_heap(heap); +} - MC_UNSET_RAW_MEM; +static void MC_modelcheck_safety_init(void) +{ + _sg_mc_safety = 1; - if(_sg_mc_visited > 0){ - MC_init(); - }else{ - MC_SET_RAW_MEM; - MC_init_memory_map_info(); - MC_init_debug_info(); - MC_UNSET_RAW_MEM; - } + MC_init(); - MC_dpor_init(); + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); - MC_SET_RAW_MEM; + /* Create exploration stack */ + mc_stack = xbt_fifo_new(); + + MC_SET_STD_HEAP; + + MC_pre_modelcheck_safety(); + + MC_SET_MC_HEAP; /* Save the initial state */ - initial_state_safety = xbt_new0(s_mc_global_t, 1); - initial_state_safety->snapshot = MC_take_snapshot(0); - initial_state_safety->initial_communications_pattern_done = 0; - initial_state_safety->comm_deterministic = 1; - initial_state_safety->send_deterministic = 1; - MC_UNSET_RAW_MEM; + initial_global_state = xbt_new0(s_mc_global_t, 1); + initial_global_state->snapshot = MC_take_snapshot(0); + MC_SET_STD_HEAP; - MC_dpor(); + MC_modelcheck_safety(); - if(raw_mem_set) - MC_SET_RAW_MEM; + mmalloc_set_current_heap(heap); xbt_abort(); //MC_exit(); } -void MC_modelcheck_liveness(){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); +static void MC_modelcheck_liveness_init() +{ + _sg_mc_liveness = 1; MC_init(); - mc_time = xbt_new0(double, simix_process_maxpid); - - /* mc_time refers to clock for each process -> ignore it for heap comparison */ - MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); - - MC_SET_RAW_MEM; - - /* Initialize statistics */ - mc_stats = xbt_new0(s_mc_stats_t, 1); - mc_stats->state_size = 1; + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); /* Create exploration stack */ - mc_stack_liveness = xbt_fifo_new(); + mc_stack = xbt_fifo_new(); /* Create the initial state */ - initial_state_liveness = xbt_new0(s_mc_global_t, 1); + initial_global_state = xbt_new0(s_mc_global_t, 1); - if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) - MC_init_dot_output(); - - MC_UNSET_RAW_MEM; + MC_SET_STD_HEAP; - MC_ddfs_init(); + MC_pre_modelcheck_liveness(); /* We're done */ MC_print_statistics(mc_stats); xbt_free(mc_time); - if(raw_mem_set) - MC_SET_RAW_MEM; + mmalloc_set_current_heap(heap); + +} + +void MC_do_the_modelcheck_for_real() +{ + if (_sg_mc_comms_determinism || _sg_mc_send_determinism) { + XBT_INFO("Check communication determinism"); + MC_modelcheck_comm_determinism_init(); + } else if (!_sg_mc_property_file || _sg_mc_property_file[0] == '\0') { + if (mc_reduce_kind == e_mc_reduce_unset) + mc_reduce_kind = e_mc_reduce_dpor; + XBT_INFO("Check a safety property"); + MC_modelcheck_safety_init(); + } else { + if (mc_reduce_kind == e_mc_reduce_unset) + mc_reduce_kind = e_mc_reduce_none; + XBT_INFO("Check the liveness property %s", _sg_mc_property_file); + MC_automaton_load(_sg_mc_property_file); + MC_modelcheck_liveness_init(); + } } @@ -1029,46 +312,32 @@ void MC_exit(void) //xbt_abort(); } -int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max){ - - return simcall->mc_value; -} - - -int MC_random(int min, int max) -{ - /*FIXME: return mc_current_state->executed_transition->random.value;*/ - return simcall_mc_random(min, max); -} - -/** - * \brief Schedules all the process that are ready to run - */ -void MC_wait_for_requests(void) +int MC_deadlock_check() { - smx_process_t process; - smx_simcall_t req; - unsigned int iter; - - while (!xbt_dynar_is_empty(simix_global->process_to_run)) { - SIMIX_process_runall(); - xbt_dynar_foreach(simix_global->process_that_ran, iter, process) { - req = &process->simcall; - if (req->call != SIMCALL_NONE && !MC_request_is_visible(req)) - SIMIX_simcall_pre(req, 0); + if (mc_mode == MC_MODE_SERVER) { + int res; + if ((res = MC_protocol_send_simple_message(mc_model_checker->process.socket, + MC_MESSAGE_DEADLOCK_CHECK))) + xbt_die("Could not check deadlock state: %s",strerror(res)); + s_mc_int_message_t message; + ssize_t s = MC_receive_message(mc_model_checker->process.socket, &message, sizeof(message)); + if (s == -1) + xbt_die("Could not receive message"); + else if (s != sizeof(message) || message.type != MC_MESSAGE_DEADLOCK_CHECK_REPLY) { + xbt_die("Unexpected message, expected MC_MESSAGE_DEADLOCK_CHECK_REPLY %i %i vs %i %i", + (int) s, (int) message.type, (int) sizeof(message), (int) MC_MESSAGE_DEADLOCK_CHECK_REPLY + ); } + else + return message.value; } -} -int MC_deadlock_check() -{ int deadlock = FALSE; smx_process_t process; - if(xbt_swag_size(simix_global->process_list)){ + if (xbt_swag_size(simix_global->process_list)) { deadlock = TRUE; - xbt_swag_foreach(process, simix_global->process_list){ - if(process->simcall.call != SIMCALL_NONE - && MC_request_is_enabled(&process->simcall)){ + xbt_swag_foreach(process, simix_global->process_list) { + if (MC_request_is_enabled(&process->simcall)) { deadlock = FALSE; break; } @@ -1077,63 +346,122 @@ int MC_deadlock_check() return deadlock; } +void handle_comm_pattern(e_mc_call_type_t call_type, smx_simcall_t req, int value, xbt_dynar_t pattern, int backtracking) { + + switch(call_type) { + case MC_CALL_TYPE_NONE: + break; + case MC_CALL_TYPE_SEND: + case MC_CALL_TYPE_RECV: + get_comm_pattern(pattern, req, call_type); + break; + case MC_CALL_TYPE_WAIT: + case MC_CALL_TYPE_WAITANY: + { + smx_synchro_t current_comm = NULL; + if (call_type == MC_CALL_TYPE_WAIT) + current_comm = simcall_comm_wait__get__comm(req); + else + current_comm = xbt_dynar_get_as(simcall_comm_waitany__get__comms(req), value, smx_synchro_t); + // First wait only must be considered: + if (current_comm->comm.refcount == 1) + complete_comm_pattern(pattern, current_comm, backtracking); + break; + } + default: + xbt_die("Unexpected call type %i", (int)call_type); + } + +} + +static void MC_restore_communications_pattern(mc_state_t state) { + mc_list_comm_pattern_t list_process_comm; + unsigned int cursor, cursor2; + xbt_dynar_foreach(initial_communications_pattern, cursor, list_process_comm){ + list_process_comm->index_comm = (int)xbt_dynar_get_as(state->index_comm, cursor, int); + } + mc_comm_pattern_t comm; + cursor = 0; + xbt_dynar_t initial_incomplete_process_comms, incomplete_process_comms; + for(int i=0; iincomplete_comm_pattern, i, xbt_dynar_t); + xbt_dynar_foreach(incomplete_process_comms, cursor2, comm) { + mc_comm_pattern_t copy_comm = xbt_new0(s_mc_comm_pattern_t, 1); + copy_comm->index = comm->index; + copy_comm->type = comm->type; + copy_comm->comm = comm->comm; + copy_comm->rdv = strdup(comm->rdv); + copy_comm->data_size = -1; + copy_comm->data = NULL; + if(comm->type == SIMIX_COMM_SEND){ + copy_comm->src_proc = comm->src_proc; + copy_comm->src_host = comm->src_host; + if(comm->data != NULL){ + copy_comm->data_size = comm->data_size; + copy_comm->data = xbt_malloc0(comm->data_size); + memcpy(copy_comm->data, comm->data, comm->data_size); + } + }else{ + copy_comm->dst_proc = comm->dst_proc; + copy_comm->dst_host = comm->dst_host; + } + xbt_dynar_push(initial_incomplete_process_comms, ©_comm); + } + } +} + /** * \brief Re-executes from the state at position start all the transitions indicated by * a given model-checker stack. * \param stack The stack with the transitions to execute. * \param start Start index to begin the re-execution. */ -void MC_replay(xbt_fifo_t stack, int start) +void MC_replay(xbt_fifo_t stack) { - int raw_mem = (mmalloc_get_current_heap() == raw_heap); + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); - int value, i = 1, count = 1; + int value, count = 1, j; char *req_str; smx_simcall_t req = NULL, saved_req = NULL; xbt_fifo_item_t item, start_item; mc_state_t state; - smx_process_t process = NULL; - int comm_pattern = 0; - + XBT_DEBUG("**** Begin Replay ****"); - if(start == -1){ - /* Restore the initial state */ - MC_restore_snapshot(initial_state_safety->snapshot); - /* At the moment of taking the snapshot the raw heap was set, so restoring - * it will set it back again, we have to unset it to continue */ - MC_UNSET_RAW_MEM; - } - - start_item = xbt_fifo_get_last_item(stack); - if(start != -1){ - while (i != start){ - start_item = xbt_fifo_get_prev_item(start_item); - i++; + /* Intermediate backtracking */ + if(_sg_mc_checkpoint > 0) { + start_item = xbt_fifo_get_first_item(stack); + state = (mc_state_t)xbt_fifo_get_item_content(start_item); + if(state->system_state){ + MC_restore_snapshot(state->system_state); + if(_sg_mc_comms_determinism || _sg_mc_send_determinism) + MC_restore_communications_pattern(state); + MC_SET_STD_HEAP; + return; } } - MC_SET_RAW_MEM; - if(mc_reduce_kind == e_mc_reduce_dpor){ - xbt_dict_reset(first_enabled_state); - xbt_swag_foreach(process, simix_global->process_list){ - if(MC_process_is_enabled(process)){ - char *key = bprintf("%lu", process->pid); - char *data = bprintf("%d", count); - xbt_dict_set(first_enabled_state, key, data, NULL); - xbt_free(key); - } - } - } + /* Restore the initial state */ + MC_restore_snapshot(initial_global_state->snapshot); + /* At the moment of taking the snapshot the raw heap was set, so restoring + * it will set it back again, we have to unset it to continue */ + MC_SET_STD_HEAP; + + start_item = xbt_fifo_get_last_item(stack); + + MC_SET_MC_HEAP; - if(_sg_mc_comms_determinism || _sg_mc_send_determinism){ - xbt_dynar_reset(communications_pattern); - xbt_dynar_reset(incomplete_communications_pattern); + if (_sg_mc_comms_determinism || _sg_mc_send_determinism) { + for (j=0; jindex_comm = 0; + } } - MC_UNSET_RAW_MEM; - + MC_SET_STD_HEAP; /* Traverse the stack from the state at position start and re-execute the transitions */ for (item = start_item; @@ -1142,66 +470,36 @@ void MC_replay(xbt_fifo_t stack, int start) state = (mc_state_t) xbt_fifo_get_item_content(item); saved_req = MC_state_get_executed_request(state, &value); - - if(mc_reduce_kind == e_mc_reduce_dpor){ - MC_SET_RAW_MEM; - char *key = bprintf("%lu", saved_req->issuer->pid); - xbt_dict_remove(first_enabled_state, key); - xbt_free(key); - MC_UNSET_RAW_MEM; - } - - if(saved_req){ + + if (saved_req) { /* because we got a copy of the executed request, we have to fetch the real one, pointed by the request field of the issuer process */ req = &saved_req->issuer->simcall; /* Debug information */ - if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ + if (XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) { req_str = MC_request_to_string(req, value); XBT_DEBUG("Replay: %s (%p)", req_str, state); xbt_free(req_str); } - } - if(_sg_mc_comms_determinism || _sg_mc_send_determinism){ - if(req->call == SIMCALL_COMM_ISEND) - comm_pattern = 1; - else if(req->call == SIMCALL_COMM_IRECV) - comm_pattern = 2; - } + /* TODO : handle test and testany simcalls */ + e_mc_call_type_t call = MC_CALL_TYPE_NONE; + if (_sg_mc_comms_determinism || _sg_mc_send_determinism) + call = mc_get_call_type(req); - SIMIX_simcall_pre(req, value); + SIMIX_simcall_handle(req, value); - if(_sg_mc_comms_determinism || _sg_mc_send_determinism){ - MC_SET_RAW_MEM; - if(comm_pattern != 0){ - get_comm_pattern(communications_pattern, req, comm_pattern); - } - MC_UNSET_RAW_MEM; - comm_pattern = 0; - } - - MC_wait_for_requests(); - - count++; - - if(mc_reduce_kind == e_mc_reduce_dpor){ - MC_SET_RAW_MEM; - /* Insert in dict all enabled processes */ - xbt_swag_foreach(process, simix_global->process_list){ - if(MC_process_is_enabled(process) /*&& !MC_state_process_is_done(state, process)*/){ - char *key = bprintf("%lu", process->pid); - if(xbt_dict_get_or_null(first_enabled_state, key) == NULL){ - char *data = bprintf("%d", count); - xbt_dict_set(first_enabled_state, key, data, NULL); - } - xbt_free(key); - } - } - MC_UNSET_RAW_MEM; + MC_SET_MC_HEAP; + if (_sg_mc_comms_determinism || _sg_mc_send_determinism) + handle_comm_pattern(call, req, value, NULL, 1); + MC_SET_STD_HEAP; + + MC_wait_for_requests(); + + count++; } - + /* Update statistics */ mc_stats->visited_states++; mc_stats->executed_transitions++; @@ -1209,81 +507,41 @@ void MC_replay(xbt_fifo_t stack, int start) } XBT_DEBUG("**** End Replay ****"); - - if(raw_mem) - MC_SET_RAW_MEM; - else - MC_UNSET_RAW_MEM; - - + mmalloc_set_current_heap(heap); } -void MC_replay_liveness(xbt_fifo_t stack, int all_stack) +void MC_replay_liveness(xbt_fifo_t stack) { - initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + initial_global_state->raw_mem_set = (mmalloc_get_current_heap() == mc_heap); - int value; - char *req_str; - smx_simcall_t req = NULL, saved_req = NULL; xbt_fifo_item_t item; - mc_state_t state; - mc_pair_t pair; - int depth = 1; + mc_pair_t pair = NULL; + mc_state_t state = NULL; + smx_simcall_t req = NULL, saved_req = NULL; + int value, depth = 1; + char *req_str; XBT_DEBUG("**** Begin Replay ****"); + /* Intermediate backtracking */ + if(_sg_mc_checkpoint > 0) { + item = xbt_fifo_get_first_item(stack); + pair = (mc_pair_t) xbt_fifo_get_item_content(item); + if(pair->graph_state->system_state){ + MC_restore_snapshot(pair->graph_state->system_state); + MC_SET_STD_HEAP; + return; + } + } + /* Restore the initial state */ - MC_restore_snapshot(initial_state_liveness->snapshot); + MC_restore_snapshot(initial_global_state->snapshot); /* At the moment of taking the snapshot the raw heap was set, so restoring * it will set it back again, we have to unset it to continue */ - if(!initial_state_liveness->raw_mem_set) - MC_UNSET_RAW_MEM; - - if(all_stack){ - - item = xbt_fifo_get_last_item(stack); - - while(depth <= xbt_fifo_size(stack)){ - - pair = (mc_pair_t) xbt_fifo_get_item_content(item); - state = (mc_state_t) pair->graph_state; - - if(pair->requests > 0){ - - saved_req = MC_state_get_executed_request(state, &value); - //XBT_DEBUG("SavedReq->call %u", saved_req->call); - - if(saved_req != NULL){ - /* because we got a copy of the executed request, we have to fetch the - real one, pointed by the request field of the issuer process */ - req = &saved_req->issuer->simcall; - //XBT_DEBUG("Req->call %u", req->call); - - /* Debug information */ - if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ - req_str = MC_request_to_string(req, value); - XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state); - xbt_free(req_str); - } - - } - - SIMIX_simcall_pre(req, value); - MC_wait_for_requests(); - } - - depth++; - - /* Update statistics */ - mc_stats->visited_pairs++; - mc_stats->executed_transitions++; - - item = xbt_fifo_get_prev_item(item); - } - - }else{ + if (!initial_global_state->raw_mem_set) + MC_SET_STD_HEAP; /* Traverse the stack from the initial state and re-execute the transitions */ for (item = xbt_fifo_get_last_item(stack); @@ -1291,47 +549,46 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack) item = xbt_fifo_get_prev_item(item)) { pair = (mc_pair_t) xbt_fifo_get_item_content(item); + state = (mc_state_t) pair->graph_state; - if(pair->requests > 0){ - + if (pair->exploration_started) { + saved_req = MC_state_get_executed_request(state, &value); - //XBT_DEBUG("SavedReq->call %u", saved_req->call); - - if(saved_req != NULL){ - /* because we got a copy of the executed request, we have to fetch the + + if (saved_req != NULL) { + /* because we got a copy of the executed request, we have to fetch the real one, pointed by the request field of the issuer process */ req = &saved_req->issuer->simcall; - //XBT_DEBUG("Req->call %u", req->call); - + /* Debug information */ - if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ + if (XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) { req_str = MC_request_to_string(req, value); XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state); xbt_free(req_str); } - + } - - SIMIX_simcall_pre(req, value); + + SIMIX_simcall_handle(req, value); MC_wait_for_requests(); } - depth++; - /* Update statistics */ mc_stats->visited_pairs++; mc_stats->executed_transitions++; + + depth++; + } - } XBT_DEBUG("**** End Replay ****"); - if(initial_state_liveness->raw_mem_set) - MC_SET_RAW_MEM; + if (initial_global_state->raw_mem_set) + MC_SET_MC_HEAP; else - MC_UNSET_RAW_MEM; - + MC_SET_STD_HEAP; + } /** @@ -1341,210 +598,216 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack) */ void MC_dump_stack_safety(xbt_fifo_t stack) { - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); MC_show_stack_safety(stack); - - if(!_sg_mc_checkpoint){ - - mc_state_t state; - - MC_SET_RAW_MEM; - while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) - MC_state_delete(state); - MC_UNSET_RAW_MEM; - - } - - if(raw_mem_set) - MC_SET_RAW_MEM; - else - MC_UNSET_RAW_MEM; + mc_state_t state; + + MC_SET_MC_HEAP; + while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) + MC_state_delete(state, !state->in_visited_states ? 1 : 0); + mmalloc_set_current_heap(heap); } void MC_show_stack_safety(xbt_fifo_t stack) { - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); int value; mc_state_t state; xbt_fifo_item_t item; smx_simcall_t req; char *req_str = NULL; - + for (item = xbt_fifo_get_last_item(stack); (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item))) : (NULL)); item = xbt_fifo_get_prev_item(item)) { req = MC_state_get_executed_request(state, &value); - if(req){ + if (req) { req_str = MC_request_to_string(req, value); XBT_INFO("%s", req_str); xbt_free(req_str); } } - if(!raw_mem_set) - MC_UNSET_RAW_MEM; + mmalloc_set_current_heap(heap); } void MC_show_deadlock(smx_simcall_t req) { - /*char *req_str = NULL;*/ + /*char *req_str = NULL; */ XBT_INFO("**************************"); XBT_INFO("*** DEAD-LOCK DETECTED ***"); XBT_INFO("**************************"); XBT_INFO("Locked request:"); /*req_str = MC_request_to_string(req); - XBT_INFO("%s", req_str); - xbt_free(req_str);*/ + XBT_INFO("%s", req_str); + xbt_free(req_str); */ XBT_INFO("Counter-example execution trace:"); - MC_dump_stack_safety(mc_stack_safety); + MC_dump_stack_safety(mc_stack); MC_print_statistics(mc_stats); } -void MC_show_stack_liveness(xbt_fifo_t stack){ +void MC_show_stack_liveness(xbt_fifo_t stack) +{ int value; mc_pair_t pair; xbt_fifo_item_t item; smx_simcall_t req; char *req_str = NULL; - + for (item = xbt_fifo_get_last_item(stack); - (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item))) - : (NULL)); item = xbt_fifo_get_prev_item(item)) { + (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item))) : (NULL)); + item = xbt_fifo_get_prev_item(item)) { req = MC_state_get_executed_request(pair->graph_state, &value); - if(req){ - if(pair->requests>0){ - req_str = MC_request_to_string(req, value); - XBT_INFO("%s", req_str); - xbt_free(req_str); - }else{ - XBT_INFO("End of system requests but evolution in Büchi automaton"); - } + if (req && req->call != SIMCALL_NONE) { + req_str = MC_request_to_string(req, value); + XBT_INFO("%s", req_str); + xbt_free(req_str); } } } -void MC_dump_stack_liveness(xbt_fifo_t stack){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); +void MC_dump_stack_liveness(xbt_fifo_t stack) +{ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); mc_pair_t pair; - - MC_SET_RAW_MEM; while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL) MC_pair_delete(pair); - MC_UNSET_RAW_MEM; - - if(raw_mem_set) - MC_SET_RAW_MEM; - + mmalloc_set_current_heap(heap); } void MC_print_statistics(mc_stats_t stats) { - xbt_mheap_t previous_heap = mmalloc_get_current_heap(); - - if(stats->expanded_pairs == 0){ + if (stats->expanded_pairs == 0) { XBT_INFO("Expanded states = %lu", stats->expanded_states); XBT_INFO("Visited states = %lu", stats->visited_states); - }else{ + } else { XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs); XBT_INFO("Visited pairs = %lu", stats->visited_pairs); } XBT_INFO("Executed transitions = %lu", stats->executed_transitions); - - MC_SET_RAW_MEM; - if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')){ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); + if ((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0] != '\0')) { fprintf(dot_output, "}\n"); fclose(dot_output); } - if(initial_state_safety != NULL){ - if(_sg_mc_comms_determinism) - XBT_INFO("Communication-deterministic : %s", !initial_state_safety->comm_deterministic ? "No" : "Yes"); + if (initial_global_state != NULL) { + if (_sg_mc_comms_determinism) + XBT_INFO("Communication-deterministic : %s", !initial_global_state->comm_deterministic ? "No" : "Yes"); if (_sg_mc_send_determinism) - XBT_INFO("Send-deterministic : %s", !initial_state_safety->send_deterministic ? "No" : "Yes"); + XBT_INFO("Send-deterministic : %s", !initial_global_state->send_deterministic ? "No" : "Yes"); } - mmalloc_set_current_heap(previous_heap); + mmalloc_set_current_heap(heap); } -void MC_assert(int prop) +void MC_automaton_load(const char *file) { - if (MC_is_active() && !prop){ - XBT_INFO("**************************"); - XBT_INFO("*** PROPERTY NOT VALID ***"); - XBT_INFO("**************************"); - XBT_INFO("Counter-example execution trace:"); - MC_dump_stack_safety(mc_stack_safety); - MC_print_statistics(mc_stats); - xbt_abort(); - } -} + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); -void MC_cut(void){ - user_max_depth_reached = 1; -} + if (_mc_property_automaton == NULL) + _mc_property_automaton = xbt_automaton_new(); -void MC_process_clock_add(smx_process_t process, double amount) -{ - mc_time[process->pid] += amount; + xbt_automaton_load(_mc_property_automaton, file); + mmalloc_set_current_heap(heap); } -double MC_process_clock_get(smx_process_t process) +static void register_symbol(xbt_automaton_propositional_symbol_t symbol) { - if(mc_time){ - if(process != NULL) - return mc_time[process->pid]; - else - return -1; - }else{ - return 0; - } -} - -void MC_automaton_load(const char *file){ - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; + if (mc_mode != MC_MODE_CLIENT) + return; + s_mc_register_symbol_message_t message; + message.type = MC_MESSAGE_REGISTER_SYMBOL; + const char* name = xbt_automaton_propositional_symbol_get_name(symbol); + if (strlen(name) + 1 > sizeof(message.name)) + xbt_die("Symbol is too long"); + strncpy(message.name, name, sizeof(message.name)); + message.callback = xbt_automaton_propositional_symbol_get_callback(symbol); + message.data = xbt_automaton_propositional_symbol_get_data(symbol); + MC_client_send_message(&message, sizeof(message)); +} + +void MC_automaton_new_propositional_symbol(const char *id, int(*fct)(void)) +{ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); if (_mc_property_automaton == NULL) _mc_property_automaton = xbt_automaton_new(); - - xbt_automaton_load(_mc_property_automaton,file); - - MC_UNSET_RAW_MEM; - - if(raw_mem_set) - MC_SET_RAW_MEM; + xbt_automaton_propositional_symbol_t symbol = xbt_automaton_propositional_symbol_new(_mc_property_automaton, id, fct); + register_symbol(symbol); + mmalloc_set_current_heap(heap); } -void MC_automaton_new_propositional_symbol(const char* id, void* fct) { - - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - MC_SET_RAW_MEM; +void MC_automaton_new_propositional_symbol_pointer(const char *id, int* value) +{ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); + if (_mc_property_automaton == NULL) + _mc_property_automaton = xbt_automaton_new(); + xbt_automaton_propositional_symbol_t symbol = xbt_automaton_propositional_symbol_new_pointer(_mc_property_automaton, id, value); + register_symbol(symbol); + mmalloc_set_current_heap(heap); +} +void MC_automaton_new_propositional_symbol_callback(const char* id, + xbt_automaton_propositional_symbol_callback_type callback, + void* data, xbt_automaton_propositional_symbol_free_function_type free_function) +{ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); if (_mc_property_automaton == NULL) _mc_property_automaton = xbt_automaton_new(); + xbt_automaton_propositional_symbol_t symbol = xbt_automaton_propositional_symbol_new_callback( + _mc_property_automaton, id, callback, data, free_function); + register_symbol(symbol); + mmalloc_set_current_heap(heap); +} - xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct); +void MC_dump_stacks(FILE* file) +{ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); - MC_UNSET_RAW_MEM; + int nstack = 0; + stack_region_t current_stack; + unsigned cursor; + xbt_dynar_foreach(stacks_areas, cursor, current_stack) { + unw_context_t * context = (unw_context_t *)current_stack->context; + fprintf(file, "Stack %i:\n", nstack); - if(raw_mem_set) - MC_SET_RAW_MEM; - -} + int nframe = 0; + char buffer[100]; + unw_cursor_t c; + unw_init_local (&c, context); + unw_word_t off; + do { + const char * name = !unw_get_proc_name(&c, buffer, 100, &off) ? buffer : "?"; + fprintf(file, " %i: %s\n", nframe, name); + ++nframe; + } while(unw_step(&c)); + ++nstack; + } + mmalloc_set_current_heap(heap); +} +#endif +double MC_process_clock_get(smx_process_t process) +{ + if (mc_time) { + if (process != NULL) + return mc_time[process->pid]; + else + return -1; + } else { + return 0; + } +} +void MC_process_clock_add(smx_process_t process, double amount) +{ + mc_time[process->pid] += amount; +}