X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3d12836da9798f96c230170b4c284cc34a322185..8fc11b8e2c3f486babc8be5494ddd53ffcc659f4:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index db1ad4f4a5..668bea076b 100644 --- a/src/mc/mc_global.c +++ b/src/mc/mc_global.c @@ -1,328 +1,1655 @@ +/* Copyright (c) 2008-2013. The SimGrid Team. + * All rights reserved. */ + +/* 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 +#include +#include +#include + +#include "simgrid/sg_config.h" #include "../surf/surf_private.h" -#include "../simix/private.h" +#include "../simix/smx_private.h" +#include "../xbt/mmalloc/mmprivate.h" #include "xbt/fifo.h" -#include "private.h" +#include "mc_private.h" +#include "xbt/automaton.h" +#include "xbt/dict.h" + +XBT_LOG_NEW_CATEGORY(mc, "All MC categories"); +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; + +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_max_depth=1000; +int _sg_mc_visited=0; +char *_sg_mc_dot_output_file = NULL; +int _sg_mc_comms_determinism=0; + +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_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); +} + +/* 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; + +/* 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; + +/* Ignore mechanism */ +xbt_dynar_t mc_stack_comparison_ignore; +xbt_dynar_t mc_data_bss_comparison_ignore; +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 *************************/ + +static void dw_location_free(dw_location_t l){ + if(l){ + if(l->type == e_dw_loclist) + xbt_dynar_free(&(l->location.loclist)); + else if(l->type == e_dw_compose) + xbt_dynar_free(&(l->location.compose)); + else if(l->type == e_dw_arithmetic) + xbt_free(l->location.arithmetic); + + xbt_free(l); + } +} + +static void dw_location_entry_free(dw_location_entry_t e){ + dw_location_free(e->location); + xbt_free(e); +} + +void dw_type_free(dw_type_t t){ + xbt_free(t->name); + xbt_free(t->dw_type_id); + xbt_dynar_free(&(t->members)); + xbt_free(t); +} + +static void dw_type_free_voidp(void *t){ + dw_type_free((dw_type_t) * (void **) t); +} + +void dw_variable_free(dw_variable_t v){ + if(v){ + xbt_free(v->name); + xbt_free(v->type_origin); + if(!v->global) + dw_location_free(v->location); + 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->local_variables = xbt_dict_new_homogeneous(NULL); + res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp); + res->types = 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)->local_variables); + xbt_dynar_free(&(*info)->global_variables); + xbt_dict_free(&(*info)->types); + xbt_free(info); + *info = NULL; +} + +/*************************************************************************/ + +static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){ + + dw_location_t loc = xbt_new0(s_dw_location_t, 1); + + if(location_list != NULL){ + + char *key = bprintf("%d", (int)strtoul(expr, NULL, 16)); + loc->type = e_dw_loclist; + loc->location.loclist = (xbt_dynar_t)xbt_dict_get_or_null(location_list, key); + if(loc->location.loclist == NULL) + XBT_INFO("Key not found in loclist"); + xbt_free(key); + return loc; + + }else{ + + int cursor = 0; + char *tok = NULL, *tok2 = NULL; + + xbt_dynar_t tokens1 = xbt_str_split(expr, ";"); + xbt_dynar_t tokens2; + + loc->type = e_dw_compose; + loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL); + + while(cursor < xbt_dynar_length(tokens1)){ + + tok = xbt_dynar_get_as(tokens1, cursor, char*); + tokens2 = xbt_str_split(tok, " "); + tok2 = xbt_dynar_get_as(tokens2, 0, char*); + + if(strncmp(tok2, "DW_OP_reg", 9) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_register; + new_element->location.reg = atoi(strtok(tok2, "DW_OP_reg")); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_fbreg:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_fbregister_op; + new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strncmp(tok2, "DW_OP_breg", 10) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_bregister_op; + new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg")); + new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strncmp(tok2, "DW_OP_lit", 9) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_lit; + new_element->location.lit = atoi(strtok(tok2, "DW_OP_lit")); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_piece:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_piece; + new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_plus_uconst:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_plus_uconst; + new_element->location.plus_uconst = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char *)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_abs") == 0 || + strcmp(tok, "DW_OP_and") == 0 || + strcmp(tok, "DW_OP_div") == 0 || + strcmp(tok, "DW_OP_minus") == 0 || + strcmp(tok, "DW_OP_mod") == 0 || + strcmp(tok, "DW_OP_mul") == 0 || + strcmp(tok, "DW_OP_neg") == 0 || + strcmp(tok, "DW_OP_not") == 0 || + strcmp(tok, "DW_OP_or") == 0 || + strcmp(tok, "DW_OP_plus") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_arithmetic; + new_element->location.arithmetic = strdup(strtok(tok2, "DW_OP_")); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_stack_value") == 0){ + }else if(strcmp(tok2, "DW_OP_deref_size:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_deref; + new_element->location.deref_size = (unsigned int short) atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_deref") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_deref; + new_element->location.deref_size = sizeof(void *); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_constu:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_uconstant; + new_element->location.uconstant.bytes = 1; + new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_consts:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_sconstant; + new_element->location.sconstant.bytes = 1; + new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_const1u:") == 0 || + strcmp(tok2, "DW_OP_const2u:") == 0 || + strcmp(tok2, "DW_OP_const4u:") == 0 || + strcmp(tok2, "DW_OP_const8u:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_uconstant; + new_element->location.uconstant.bytes = tok2[11] - '0'; + new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_const1s") == 0 || + strcmp(tok, "DW_OP_const2s") == 0 || + strcmp(tok, "DW_OP_const4s") == 0 || + strcmp(tok, "DW_OP_const8s") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_sconstant; + new_element->location.sconstant.bytes = tok2[11] - '0'; + new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else{ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_unsupported; + xbt_dynar_push(loc->location.compose, &new_element); + } + + cursor++; + xbt_dynar_free(&tokens2); + + } + + xbt_dynar_free(&tokens1); + + return loc; + + } + +} + + +/** \brief Finds a frame (DW_TAG_subprogram) from an DWARF offset in the rangd of this subprogram + * + * The offset can be an offset of a child DW_TAG_variable. + */ +static dw_frame_t MC_dwarf_get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){ + + xbt_dict_cursor_t cursor = NULL; + char *name; + dw_frame_t res; + + xbt_dict_foreach(all_variables, cursor, name, res) { + if(offset >= res->start && offset < res->end){ + xbt_dict_cursor_free(&cursor); + return res; + } + } + + xbt_dict_cursor_free(&cursor); + return NULL; + +} + +static dw_variable_t MC_dwarf_get_variable_by_name(dw_frame_t frame, char *var){ + + unsigned int cursor = 0; + dw_variable_t current_var; + + xbt_dynar_foreach(frame->variables, cursor, current_var){ + if(strcmp(var, current_var->name) == 0) + return current_var; + } + + return NULL; +} + +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 *******************************/ +/*********************************************************************************/ + +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; + +typedef struct s_mc_data_bss_ignore_variable{ + char *name; +}s_mc_data_bss_ignore_variable_t, *mc_data_bss_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 data_bss_ignore_variable_free(mc_data_bss_ignore_variable_t v){ + xbt_free(v->name); + xbt_free(v); +} + +static void data_bss_ignore_variable_free_voidp(void *v){ + data_bss_ignore_variable_free((mc_data_bss_ignore_variable_t) * (void **) v); +} + +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; + + if(mc_libsimgrid_info){ + + 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; + } + } + + }else{ + + if(mc_data_bss_comparison_ignore == NULL) + mc_data_bss_comparison_ignore = xbt_dynar_new(sizeof(mc_data_bss_ignore_variable_t), data_bss_ignore_variable_free_voidp); + + mc_data_bss_ignore_variable_t var = NULL; + var = xbt_new0(s_mc_data_bss_ignore_variable_t, 1); + var->name = strdup(name); + + if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){ + + xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var); + + }else{ + + unsigned int cursor = 0; + int start = 0; + int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1; + mc_data_bss_ignore_variable_t current_var = NULL; + + while(start <= end){ + cursor = (start + end) / 2; + current_var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t); + if(strcmp(current_var->name, name) == 0){ + data_bss_ignore_variable_free(var); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + }else if(strcmp(current_var->name, name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + + if(strcmp(current_var->name, name) < 0) + xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor + 1, &var); + else + xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor, &var); + + } + } + + if(!raw_mem_set) + MC_UNSET_RAW_MEM; +} + +void MC_ignore_local_variable(const char *var_name, const char *frame_name){ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + if(mc_libsimgrid_info){ + unsigned int cursor = 0; + dw_variable_t current_var; + int start, end; + if(strcmp(frame_name, "*") == 0){ /* Remove variable in all frames */ + xbt_dict_cursor_t dict_cursor; + char *current_frame_name; + dw_frame_t frame; + xbt_dict_foreach(mc_libsimgrid_info->local_variables, dict_cursor, current_frame_name, frame){ + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + while(start <= end){ + cursor = (start + end) / 2; + current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t); + if(strcmp(current_var->name, var_name) == 0){ + xbt_dynar_remove_at(frame->variables, cursor, NULL); + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + }else if(strcmp(current_var->name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + } + xbt_dict_foreach(mc_binary_info->local_variables, dict_cursor, current_frame_name, frame){ + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + while(start <= end){ + cursor = (start + end) / 2; + current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t); + if(strcmp(current_var->name, var_name) == 0){ + xbt_dynar_remove_at(frame->variables, cursor, NULL); + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + }else if(strcmp(current_var->name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + } + }else{ + xbt_dynar_t variables_list = ((dw_frame_t)xbt_dict_get_or_null( + mc_libsimgrid_info->local_variables, frame_name))->variables; + start = 0; + end = xbt_dynar_length(variables_list) - 1; + while(start <= end){ + cursor = (start + end) / 2; + current_var = (dw_variable_t)xbt_dynar_get_as(variables_list, cursor, dw_variable_t); + if(strcmp(current_var->name, var_name) == 0){ + xbt_dynar_remove_at(variables_list, cursor, NULL); + start = 0; + end = xbt_dynar_length(variables_list) - 1; + }else if(strcmp(current_var->name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + } + }else{ + + if(mc_stack_comparison_ignore == NULL) + mc_stack_comparison_ignore = xbt_dynar_new(sizeof(mc_stack_ignore_variable_t), stack_ignore_variable_free_voidp); + + mc_stack_ignore_variable_t var = NULL; + var = xbt_new0(s_mc_stack_ignore_variable_t, 1); + var->var_name = strdup(var_name); + var->frame = strdup(frame_name); + + if(xbt_dynar_is_empty(mc_stack_comparison_ignore)){ + + xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var); + + }else{ + + unsigned int cursor = 0; + int start = 0; + int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1; + mc_stack_ignore_variable_t current_var = NULL; + + while(start <= end){ + cursor = (start + end) / 2; + current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t); + if(strcmp(current_var->frame, frame_name) == 0){ + if(strcmp(current_var->var_name, var_name) == 0){ + stack_ignore_variable_free(var); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + }else if(strcmp(current_var->var_name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + }else if(strcmp(current_var->frame, frame_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + + if(strcmp(current_var->frame, frame_name) == 0){ + if(strcmp(current_var->var_name, var_name) < 0){ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var); + }else{ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var); + } + }else if(strcmp(current_var->frame, frame_name) < 0){ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var); + }else{ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var); + } + } + } + + 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); + + 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; +} + +/******************************* Initialisation of MC *******************************/ +/*********************************************************************************/ + +static void MC_dump_ignored_local_variables(void){ + + if(mc_stack_comparison_ignore == NULL || xbt_dynar_is_empty(mc_stack_comparison_ignore)) + return; + + unsigned int cursor = 0; + mc_stack_ignore_variable_t current_var; + + xbt_dynar_foreach(mc_stack_comparison_ignore, cursor, current_var){ + MC_ignore_local_variable(current_var->var_name, current_var->frame); + } + + xbt_dynar_free(&mc_stack_comparison_ignore); + mc_stack_comparison_ignore = NULL; + +} + +static void MC_dump_ignored_global_variables(void){ + + if(mc_data_bss_comparison_ignore == NULL || xbt_dynar_is_empty(mc_data_bss_comparison_ignore)) + return; + + unsigned int cursor = 0; + mc_data_bss_ignore_variable_t current_var; + + xbt_dynar_foreach(mc_data_bss_comparison_ignore, cursor, current_var){ + MC_ignore_global_variable(current_var->name); + } + + xbt_dynar_free(&mc_data_bss_comparison_ignore); + mc_data_bss_comparison_ignore = NULL; + +} + +static void MC_init_debug_info(); +static void MC_init_debug_info() { + 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); + mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path); + + MC_free_memory_map(maps); + XBT_INFO("Get debug information done !"); +} + +void MC_init(){ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + compare = 0; + + /* Initialize the data structures that must be persistent across every + iteration of the model-checker (in RAW memory) */ + + MC_SET_RAW_MEM; + + MC_init_memory_map_info(); + MC_init_debug_info(); + + /* Remove variables ignored before getting list of variables */ + MC_dump_ignored_local_variables(); + MC_dump_ignored_global_variables(); + + /* 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("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("mc_comp_times"); + MC_ignore_global_variable("mc_snapshot_comparison_time"); + MC_ignore_global_variable("mc_time"); + MC_ignore_global_variable("smpi_current_rank"); + 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_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)); + } + + if(raw_mem_set) + MC_SET_RAW_MEM; + +} + +static void MC_init_dot_output(){ /* FIXME : more colors */ + + 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"; + + dot_output = fopen(_sg_mc_dot_output_file, "w"); + + if(dot_output == NULL){ + perror("Error open dot output file"); + xbt_abort(); + } -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, - "Logging specific to MC (global)"); + 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 global data structures */ -mc_snapshot_t initial_snapshot = NULL; -xbt_fifo_t mc_stack = NULL; -xbt_setset_t mc_setset = NULL; -mc_stats_t mc_stats = NULL; -mc_state_t mc_current_state = NULL; -char mc_replay_mode = FALSE; +} + +/******************************* Core of MC *******************************/ +/**************************************************************************/ + +void MC_do_the_modelcheck_for_real() { + + 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; + + XBT_INFO("Check a safety property"); + MC_modelcheck_safety(); + + } 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(); + } +} + +void MC_modelcheck_safety(void) +{ + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); -/** - * \brief Initialize the model-checker data structures - */ -void MC_init(int method) -{ /* Check if MC is already initialized */ - if(initial_snapshot) + if (initial_state_safety) return; - + + 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)); + /* Initialize the data structures that must be persistent across every iteration of the model-checker (in RAW memory) */ - MC_SET_RAW_MEM; + MC_SET_RAW_MEM; + /* Initialize statistics */ mc_stats = xbt_new0(s_mc_stats_t, 1); mc_stats->state_size = 1; - + /* Create exploration stack */ - mc_stack = xbt_fifo_new(); + mc_stack_safety = xbt_fifo_new(); - /* Create the container for the sets */ - mc_setset = xbt_setset_new(20); - - switch(method){ - case 0: - MC_dfs_init(); - break; - case 1: - MC_dpor_init(); - break; - default: - break; + if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) + MC_init_dot_output(); + + MC_UNSET_RAW_MEM; + + 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; } - - /* Save the initial state */ + + MC_dpor_init(); + MC_SET_RAW_MEM; - initial_snapshot = xbt_new(s_mc_snapshot_t,1); - MC_take_snapshot(initial_snapshot); + /* 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; + + MC_dpor(); + + if(raw_mem_set) + MC_SET_RAW_MEM; + + xbt_abort(); + //MC_exit(); } -void MC_modelcheck(int method) -{ +void MC_modelcheck_liveness(){ - MC_init(method); + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - switch(method){ - case 0: - MC_dfs(); - break; - case 1: - MC_dpor(); - break; - default: - break; - } + MC_init(); - MC_exit(method); -} + mc_time = xbt_new0(double, simix_process_maxpid); -void MC_exit(int method) -{ - mc_state_t state; - - switch(method){ - case 0: - //MC_dfs_exit(); - break; - case 1: - //MC_dpor_exit(); - break; - default: - break; - } - - /* Destroy MC data structures (in RAW memory) */ + /* 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; - xbt_free(mc_stats); + + /* Initialize statistics */ + mc_stats = xbt_new0(s_mc_stats_t, 1); + mc_stats->state_size = 1; + + /* Create exploration stack */ + mc_stack_liveness = xbt_fifo_new(); + + /* Create the initial state */ + initial_state_liveness = xbt_new0(s_mc_global_t, 1); - while( (state = (mc_state_t)xbt_fifo_pop(mc_stack)) != NULL ) - MC_state_delete(state); + if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) + MC_init_dot_output(); - xbt_fifo_free(mc_stack); - xbt_setset_destroy(mc_setset); MC_UNSET_RAW_MEM; + + MC_ddfs_init(); + + /* We're done */ + MC_print_statistics(mc_stats); + xbt_free(mc_time); + + if(raw_mem_set) + MC_SET_RAW_MEM; + +} + + +void MC_exit(void) +{ + xbt_free(mc_time); + + MC_memory_exit(); + //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) { - MC_random_create(min,max); - SIMIX_process_yield(); + /*FIXME: return mc_current_state->executed_transition->random.value;*/ + return simcall_mc_random(min, max); +} - if(!mc_replay_mode) - return mc_current_state->executed_transition->current_value; - else - return mc_current_state->executed_transition->current_value - 1; +/** + * \brief Schedules all the process that are ready to run + */ +void MC_wait_for_requests(void) +{ + 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); + } + } +} + +int MC_deadlock_check() +{ + int deadlock = FALSE; + smx_process_t process; + 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)){ + deadlock = FALSE; + break; + } + } + } + return deadlock; } /** - * \brief Re-executes from the initial state all the transitions indicated by + * \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. -*/ -void MC_replay(xbt_fifo_t stack) + * \param start Start index to begin the re-execution. + */ +void MC_replay(xbt_fifo_t stack, int start) { - xbt_fifo_item_t item; - mc_transition_t trans; + int raw_mem = (mmalloc_get_current_heap() == raw_heap); - DEBUG0("**** Begin Replay ****"); + int value, i = 1, count = 1; + 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; - /* Restore the initial state */ - MC_restore_snapshot(initial_snapshot); + XBT_DEBUG("**** Begin Replay ****"); - mc_replay_mode = TRUE; - + 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++; + } + } + + MC_SET_RAW_MEM; + 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); + } + } + if(_sg_mc_comms_determinism) + xbt_dynar_reset(communications_pattern); MC_UNSET_RAW_MEM; + + + /* Traverse the stack from the state at position start and re-execute the transitions */ + for (item = start_item; + item != xbt_fifo_get_first_item(stack); + item = xbt_fifo_get_prev_item(item)) { + + state = (mc_state_t) xbt_fifo_get_item_content(item); + saved_req = MC_state_get_executed_request(state, &value); + + 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){ + /* 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)){ + req_str = MC_request_to_string(req, value); + XBT_DEBUG("Replay: %s (%p)", req_str, state); + xbt_free(req_str); + } + } - /* Traverse the stack from the initial state and re-execute the transitions */ - for(item = xbt_fifo_get_last_item(stack); - item != xbt_fifo_get_first_item(stack); - item = xbt_fifo_get_prev_item(item)){ + if(_sg_mc_comms_determinism){ + if(req->call == SIMCALL_COMM_ISEND) + comm_pattern = 1; + else if(req->call == SIMCALL_COMM_IRECV) + comm_pattern = 2; + } + + SIMIX_simcall_pre(req, value); + + if(_sg_mc_comms_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(); - mc_current_state = (mc_state_t) xbt_fifo_get_item_content(item); - trans = mc_current_state->executed_transition; + count++; + 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; + /* Update statistics */ mc_stats->visited_states++; mc_stats->executed_transitions++; - DEBUG1("Executing transition %s", trans->name); - SIMIX_process_schedule(trans->process); + } + + XBT_DEBUG("**** End Replay ****"); - /* Do all surf's related black magic tricks to keep all working */ - MC_execute_surf_actions(); + if(raw_mem) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + - /* Schedule every process that got enabled due to the executed transition */ - MC_schedule_enabled_processes(); - } - mc_replay_mode = FALSE; - DEBUG0("**** End Replay ****"); } -/** - * \brief Dumps the contents of a model-checker's stack and shows the actual - * execution trace - * \param stack The stack to dump -*/ -void MC_dump_stack(xbt_fifo_t stack) +void MC_replay_liveness(xbt_fifo_t stack, int all_stack) { + + initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_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; + + XBT_DEBUG("**** Begin Replay ****"); + + /* Restore the initial state */ + MC_restore_snapshot(initial_state_liveness->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){ - MC_show_stack(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); - MC_SET_RAW_MEM; - while( (state = (mc_state_t)xbt_fifo_pop(stack)) != NULL ) - MC_state_delete(state); - MC_UNSET_RAW_MEM; -} + /* 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(); + } -void MC_show_stack(xbt_fifo_t stack) -{ - mc_state_t state; - mc_transition_t trans; - xbt_fifo_item_t item; + depth++; + + /* Update statistics */ + mc_stats->visited_pairs++; + mc_stats->executed_transitions++; - 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)){ - trans = state->executed_transition; - if(trans){ - INFO1("%s", trans->name); + item = xbt_fifo_get_prev_item(item); } - } -} -/** - * \brief Schedules all the process that are ready to run - * As a side effect it performs some clean-up required by SIMIX - */ -void MC_schedule_enabled_processes(void) -{ - smx_process_t process; + }else{ - //SIMIX_process_empty_trash(); + /* Traverse the stack from the initial state and re-execute the transitions */ + for (item = xbt_fifo_get_last_item(stack); + item != xbt_fifo_get_first_item(stack); + item = xbt_fifo_get_prev_item(item)) { - /* Schedule every process that is ready to run due to an finished action */ - while ((process = xbt_swag_extract(simix_global->process_to_run))) { - DEBUG2("Scheduling %s on %s", process->name, process->smx_host->name); - SIMIX_process_schedule(process); - } -} + 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++; + } + } -/******************************** States **************************************/ + XBT_DEBUG("**** End Replay ****"); + + if(initial_state_liveness->raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + +} /** - * \brief Creates a state data structure used by the exploration algorithm + * \brief Dumps the contents of a model-checker's stack and shows the actual + * execution trace + * \param stack The stack to dump */ -mc_state_t MC_state_new(void) +void MC_dump_stack_safety(xbt_fifo_t stack) { - mc_state_t state = NULL; - state = xbt_new0(s_mc_state_t, 1); - state->created_transitions = xbt_setset_new_set(mc_setset); - state->transitions = xbt_setset_new_set(mc_setset); - state->enabled_transitions = xbt_setset_new_set(mc_setset); - state->interleave = xbt_setset_new_set(mc_setset); - state->done = xbt_setset_new_set(mc_setset); - state->executed_transition = NULL; - - mc_stats->expanded_states++; + int raw_mem_set = (mmalloc_get_current_heap() == raw_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; - return state; } -/** - * \brief Deletes a state data structure - * \param trans The state to be deleted - */ -void MC_state_delete(mc_state_t state) + + +void MC_show_stack_safety(xbt_fifo_t stack) { - xbt_setset_cursor_t cursor; - mc_transition_t trans; + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + int value; + mc_state_t state; + xbt_fifo_item_t item; + smx_simcall_t req; + char *req_str = NULL; - xbt_setset_foreach(state->created_transitions, cursor, trans){ - MC_transition_delete(trans); + 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){ + req_str = MC_request_to_string(req, value); + XBT_INFO("%s", req_str); + xbt_free(req_str); + } } - xbt_setset_destroy_set(state->created_transitions); - xbt_setset_destroy_set(state->transitions); - xbt_setset_destroy_set(state->enabled_transitions); - xbt_setset_destroy_set(state->interleave); - xbt_setset_destroy_set(state->done); - - xbt_free(state); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } -/************************** SURF Emulation ************************************/ +void MC_show_deadlock(smx_simcall_t req) +{ + /*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("Counter-example execution trace:"); + MC_dump_stack_safety(mc_stack_safety); + MC_print_statistics(mc_stats); +} -/* Dirty hack, we manipulate surf's clock to simplify the integration of the - model-checker */ -extern double NOW; -/** - * \brief Executes all the actions at every model - */ -void MC_execute_surf_actions(void) -{ - unsigned int iter; - surf_action_t action = NULL; - surf_model_t model = NULL; - smx_action_t smx_action = NULL; - - /* Execute all the actions in every model */ - xbt_dynar_foreach(model_list, iter, model){ - while ((action = xbt_swag_extract(model->states.running_action_set))){ - /* FIXME: timeouts are not calculated correctly */ - if(NOW >= action->max_duration){ - surf_action_state_set(action, SURF_ACTION_DONE); - smx_action = action->data; - DEBUG5("Resource [%s] (%d): Executing RUNNING action \"%s\" (%p) MaxDuration %lf", - model->name, xbt_swag_size(model->states.running_action_set), - smx_action->name, smx_action, action->max_duration); - - /* Copy the transfered data of the completed network actions */ - /* FIXME: be carefull it might not be an action of the network model */ - if(smx_action && smx_action->data != NULL) - SIMIX_network_copy_data((smx_comm_t)smx_action->data); - - if(smx_action) - SIMIX_action_signal_all(smx_action); +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)) { + 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"); } } - /*FIXME: check if this is always empty or not */ - while ((action = xbt_swag_extract(model->states.failed_action_set))) { - smx_action = action->data; - DEBUG4("Resource [%s] (%d): Executing FAILED action \"%s\" (%p)", - model->name, xbt_swag_size(model->states.running_action_set), - smx_action->name, smx_action); - if (smx_action) - SIMIX_action_signal_all(smx_action); - } } - /* That's it, now go one step deeper into the model-checking process! */ - NOW += 0.5; /* FIXME: Check time increases*/ } -/****************************** Statistics ************************************/ +void MC_dump_stack_liveness(xbt_fifo_t stack){ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_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; + +} + + void MC_print_statistics(mc_stats_t stats) { - INFO1("State space size ~= %lu", stats->state_size); - INFO1("Expanded states = %lu", stats->expanded_states); - INFO1("Visited states = %lu", stats->visited_states); - INFO1("Executed transitions = %lu", stats->executed_transitions); - INFO1("Expanded / Visited = %lf", - (double)stats->visited_states / stats->expanded_states); - /*INFO1("Exploration coverage = %lf", - (double)stats->expanded_states / stats->state_size);*/ + if(stats->expanded_pairs == 0){ + XBT_INFO("Expanded states = %lu", stats->expanded_states); + XBT_INFO("Visited states = %lu", stats->visited_states); + }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')){ + fprintf(dot_output, "}\n"); + fclose(dot_output); + } + if(initial_state_safety != NULL && _sg_mc_comms_determinism){ + XBT_INFO("Communication-deterministic : %s", !initial_state_safety->comm_deterministic ? "No" : "Yes"); + XBT_INFO("Send-deterministic : %s", !initial_state_safety->send_deterministic ? "No" : "Yes"); + } + MC_UNSET_RAW_MEM; } -/************************* Assertion Checking *********************************/ void MC_assert(int prop) { - if(!prop){ - INFO0("**************************"); - INFO0("*** PROPERTY NOT VALID ***"); - INFO0("**************************"); - INFO0("Counter-example execution trace:"); - MC_dump_stack(mc_stack); + 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(); } } +void MC_cut(void){ + user_max_depth_reached = 1; +} + +void MC_process_clock_add(smx_process_t process, double amount) +{ + mc_time[process->pid] += amount; +} + +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_automaton_load(const char *file){ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + 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; + +} + +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; + + if (_mc_property_automaton == NULL) + _mc_property_automaton = xbt_automaton_new(); + + xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct); + + MC_UNSET_RAW_MEM; + + if(raw_mem_set) + MC_SET_RAW_MEM; + +} + + +