X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/14226aa8e149636047c44fb76c20163989594cb1..bf667234dc6219eb5ee398d5dca36a3a16ec340f:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index a1953a4c6d..f6bed22315 100644 --- a/src/mc/mc_global.c +++ b/src/mc/mc_global.c @@ -1,28 +1,70 @@ +/* Copyright (c) 2008-2012 Da 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 "../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" +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; + +extern int _surf_init_status; +void _mc_cfg_cb_reduce(const char *name, int pos) { + if (_surf_init_status && !_surf_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(_surf_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); + } + xbt_cfg_set_int(_surf_cfg_set,"model-check",1); +} + +void _mc_cfg_cb_checkpoint(const char *name, int pos) { + if (_surf_init_status && !_surf_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."); + } + _surf_mc_checkpoint = xbt_cfg_get_int(_surf_cfg_set, name); + xbt_cfg_set_int(_surf_cfg_set,"model-check",1); +} +void _mc_cfg_cb_property(const char *name, int pos) { + if (_surf_init_status && !_surf_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."); + } + _surf_mc_property_file= xbt_cfg_get_string(_surf_cfg_set, name); + xbt_cfg_set_int(_surf_cfg_set,"model-check",1); +} + + /* MC global data structures */ mc_state_t mc_current_state = NULL; char mc_replay_mode = FALSE; double *mc_time = NULL; mc_snapshot_t initial_snapshot = NULL; +int raw_mem_set; /* Safety */ -xbt_fifo_t mc_stack_safety_stateful = NULL; -xbt_fifo_t mc_stack_safety_stateless = NULL; +xbt_fifo_t mc_stack_safety = NULL; mc_stats_t mc_stats = NULL; /* Liveness */ @@ -30,20 +72,43 @@ mc_stats_t mc_stats = NULL; mc_stats_pair_t mc_stats_pair = NULL; xbt_fifo_t mc_stack_liveness = NULL; mc_snapshot_t initial_snapshot_liveness = NULL; +int compare; +xbt_dynar_t mc_binary_local_variables = NULL; -xbt_automaton_t automaton; -char *prog_name; +extern xbt_dynar_t mmalloc_ignore; +extern xbt_dynar_t stacks_areas; + +xbt_automaton_t _mc_property_automaton = NULL; -static void MC_init_liveness(xbt_automaton_t a, char *prgm); static void MC_assert_pair(int prop); +void MC_do_the_modelcheck_for_real() { + if (!_surf_mc_property_file || _surf_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(); + + } else { + + if (mc_reduce_kind==e_mc_reduce_unset) + mc_reduce_kind=e_mc_reduce_none; + + XBT_INFO("Check the liveness property %s",_surf_mc_property_file); + MC_automaton_load(_surf_mc_property_file); + MC_modelcheck_liveness(); + } +} /** * \brief Initialize the model-checker data structures */ -void MC_init_safety_stateless(void) +void MC_init_safety(void) { + raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + /* Check if MC is already initialized */ if (initial_snapshot) return; @@ -52,6 +117,7 @@ void MC_init_safety_stateless(void) /* Initialize the data structures that must be persistent across every iteration of the model-checker (in RAW memory) */ + MC_SET_RAW_MEM; /* Initialize statistics */ @@ -59,7 +125,7 @@ void MC_init_safety_stateless(void) mc_stats->state_size = 1; /* Create exploration stack */ - mc_stack_safety_stateless = xbt_fifo_new(); + mc_stack_safety = xbt_fifo_new(); MC_UNSET_RAW_MEM; @@ -70,90 +136,69 @@ void MC_init_safety_stateless(void) initial_snapshot = xbt_new0(s_mc_snapshot_t, 1); MC_take_snapshot(initial_snapshot); MC_UNSET_RAW_MEM; -} -void MC_init_safety_stateful(void){ + if(raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; - /* Check if MC is already initialized */ - if (initial_snapshot) - return; - - mc_time = xbt_new0(double, simix_process_maxpid); - - /* Initialize the data structures that must be persistent across every - iteration of the model-checker (in RAW memory) */ - 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_safety_stateful = xbt_fifo_new(); - - MC_UNSET_RAW_MEM; +} - MC_dpor_stateful_init(); +void MC_compare(void){ + compare = 1; +} +void MC_modelcheck(void) +{ + MC_init_safety(); + MC_dpor(); + MC_exit(); } -static void MC_init_liveness(xbt_automaton_t a, char *prgm){ +void MC_modelcheck_liveness(){ + + raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + /* init stuff */ XBT_DEBUG("Start init mc"); mc_time = xbt_new0(double, simix_process_maxpid); + /* mc_time refers to clock for each process -> ignore it for heap comparison */ + int i; + for(i = 0; iprocess_to_run)) { SIMIX_process_runall(); xbt_dynar_foreach(simix_global->process_that_ran, iter, process) { - req = &process->request; - if (req->call != REQ_NO_REQ && !MC_request_is_visible(req)) - SIMIX_request_pre(req, 0); + req = &process->simcall; + if (req->call != SIMCALL_NONE && !MC_request_is_visible(req)) + SIMIX_simcall_pre(req, 0); } } } @@ -198,8 +243,8 @@ int MC_deadlock_check() if(xbt_swag_size(simix_global->process_list)){ deadlock = TRUE; xbt_swag_foreach(process, simix_global->process_list){ - if(process->request.call != REQ_NO_REQ - && MC_request_is_enabled(&process->request)){ + if(process->simcall.call != SIMCALL_NONE + && MC_request_is_enabled(&process->simcall)){ deadlock = FALSE; break; } @@ -209,28 +254,41 @@ int MC_deadlock_check() } /** - * \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) { - int value; + raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + int value, i = 1; char *req_str; - smx_req_t req = NULL, saved_req = NULL; - xbt_fifo_item_t item; + smx_simcall_t req = NULL, saved_req = NULL; + xbt_fifo_item_t item, start_item; mc_state_t state; XBT_DEBUG("**** Begin Replay ****"); - /* Restore the initial state */ - MC_restore_snapshot(initial_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; + if(start == -1){ + /* Restore the initial state */ + MC_restore_snapshot(initial_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; + } - /* Traverse the stack from the initial state and re-execute the transitions */ - for (item = xbt_fifo_get_last_item(stack); + start_item = xbt_fifo_get_last_item(stack); + if(start != -1){ + while (i != start){ + start_item = xbt_fifo_get_prev_item(start_item); + i++; + } + } + + /* 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)) { @@ -240,7 +298,7 @@ void MC_replay(xbt_fifo_t stack) 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->request; + req = &saved_req->issuer->simcall; /* Debug information */ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ @@ -250,7 +308,7 @@ void MC_replay(xbt_fifo_t stack) } } - SIMIX_request_pre(req, value); + SIMIX_simcall_pre(req, value); MC_wait_for_requests(); /* Update statistics */ @@ -258,13 +316,23 @@ void MC_replay(xbt_fifo_t stack) mc_stats->executed_transitions++; } XBT_DEBUG("**** End Replay ****"); + + if(raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + + } void MC_replay_liveness(xbt_fifo_t stack, int all_stack) { + + raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + int value; char *req_str; - smx_req_t req = NULL, saved_req = NULL; + smx_simcall_t req = NULL, saved_req = NULL; xbt_fifo_item_t item; mc_state_t state; mc_pair_stateless_t pair; @@ -289,26 +357,26 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack) if(pair->requests > 0){ - saved_req = MC_state_get_executed_request(state, &value); - //XBT_DEBUG("SavedReq->call %u", saved_req->call); + 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->request; - //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); - } - - } + 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_request_pre(req, value); - MC_wait_for_requests(); + SIMIX_simcall_pre(req, value); + MC_wait_for_requests(); } depth++; @@ -323,34 +391,34 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack) /* 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)) { + item != xbt_fifo_get_first_item(stack); + item = xbt_fifo_get_prev_item(item)) { pair = (mc_pair_stateless_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); + 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->request; - //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); - } - - } + 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_request_pre(req, value); - MC_wait_for_requests(); + SIMIX_simcall_pre(req, value); + MC_wait_for_requests(); } depth++; @@ -361,33 +429,51 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack) } XBT_DEBUG("**** End Replay ****"); -} + if(raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + +} /** * \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_safety_stateless(xbt_fifo_t stack) + */ +void MC_dump_stack_safety(xbt_fifo_t stack) { - mc_state_t state; + + raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - MC_show_stack_safety_stateless(stack); + MC_show_stack_safety(stack); - MC_SET_RAW_MEM; - while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) - MC_state_delete(state); - MC_UNSET_RAW_MEM; + if(!_surf_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; + } -void MC_show_stack_safety_stateless(xbt_fifo_t stack) +void MC_show_stack_safety(xbt_fifo_t stack) { int value; mc_state_t state; xbt_fifo_item_t item; - smx_req_t req; + smx_simcall_t req; char *req_str = NULL; for (item = xbt_fifo_get_last_item(stack); @@ -402,21 +488,7 @@ void MC_show_stack_safety_stateless(xbt_fifo_t stack) } } -void MC_show_deadlock(smx_req_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_stateless(mc_stack_safety_stateless); -} - -void MC_show_deadlock_stateful(smx_req_t req) +void MC_show_deadlock(smx_simcall_t req) { /*char *req_str = NULL;*/ XBT_INFO("**************************"); @@ -424,43 +496,10 @@ void MC_show_deadlock_stateful(smx_req_t req) 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_show_stack_safety_stateful(mc_stack_safety_stateful); -} - -void MC_dump_stack_safety_stateful(xbt_fifo_t stack) -{ - //mc_state_ws_t state; - - MC_show_stack_safety_stateful(stack); - - /*MC_SET_RAW_MEM; - while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) - MC_state_delete(state); - MC_UNSET_RAW_MEM;*/ -} - - -void MC_show_stack_safety_stateful(xbt_fifo_t stack) -{ - int value; - mc_state_ws_t state; - xbt_fifo_item_t item; - smx_req_t req; - char *req_str = NULL; - - for (item = xbt_fifo_get_last_item(stack); - (item ? (state = (mc_state_ws_t) (xbt_fifo_get_item_content(item))) - : (NULL)); item = xbt_fifo_get_prev_item(item)) { - req = MC_state_get_executed_request(state->graph_state, &value); - if(req){ - req_str = MC_request_to_string(req, value); - XBT_INFO("%s", req_str); - xbt_free(req_str); - } - } + MC_dump_stack_safety(mc_stack_safety); } @@ -468,7 +507,7 @@ void MC_show_stack_liveness(xbt_fifo_t stack){ int value; mc_pair_stateless_t pair; xbt_fifo_item_t item; - smx_req_t req; + smx_simcall_t req; char *req_str = NULL; for (item = xbt_fifo_get_last_item(stack); @@ -477,36 +516,45 @@ void MC_show_stack_liveness(xbt_fifo_t stack){ 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); + 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"); + XBT_INFO("End of system requests but evolution in Büchi automaton"); } } } } void MC_dump_stack_liveness(xbt_fifo_t stack){ + + raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + mc_pair_stateless_t pair; MC_SET_RAW_MEM; while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL) MC_pair_stateless_delete(pair); MC_UNSET_RAW_MEM; + + if(raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + } void MC_print_statistics(mc_stats_t stats) { - XBT_INFO("State space size ~= %lu", stats->state_size); + //XBT_INFO("State space size ~= %lu", stats->state_size); XBT_INFO("Expanded states = %lu", stats->expanded_states); XBT_INFO("Visited states = %lu", stats->visited_states); XBT_INFO("Executed transitions = %lu", stats->executed_transitions); XBT_INFO("Expanded / Visited = %lf", - (double) stats->visited_states / stats->expanded_states); + (double) stats->visited_states / stats->expanded_states); /*XBT_INFO("Exploration coverage = %lf", - (double)stats->expanded_states / stats->state_size); */ + (double)stats->expanded_states / stats->state_size); */ } void MC_print_statistics_pairs(mc_stats_pair_t stats) @@ -515,38 +563,24 @@ void MC_print_statistics_pairs(mc_stats_pair_t stats) XBT_INFO("Visited pairs = %lu", stats->visited_pairs); //XBT_INFO("Executed transitions = %lu", stats->executed_transitions); XBT_INFO("Expanded / Visited = %lf", - (double) stats->visited_pairs / stats->expanded_pairs); + (double) stats->visited_pairs / stats->expanded_pairs); /*XBT_INFO("Exploration coverage = %lf", - (double)stats->expanded_states / stats->state_size); */ + (double)stats->expanded_states / stats->state_size); */ } void MC_assert(int prop) { - if (MC_IS_ENABLED && !prop) { - XBT_INFO("**************************"); - XBT_INFO("*** PROPERTY NOT VALID ***"); - XBT_INFO("**************************"); - XBT_INFO("Counter-example execution trace:"); - MC_dump_stack_safety_stateless(mc_stack_safety_stateless); - MC_print_statistics(mc_stats); - xbt_abort(); - } -} - -void MC_assert_stateful(int prop) -{ - if (MC_IS_ENABLED && !prop) { + if (MC_IS_ENABLED && !prop){ XBT_INFO("**************************"); XBT_INFO("*** PROPERTY NOT VALID ***"); XBT_INFO("**************************"); XBT_INFO("Counter-example execution trace:"); - MC_dump_stack_safety_stateful(mc_stack_safety_stateful); + MC_dump_stack_safety(mc_stack_safety); MC_print_statistics(mc_stats); xbt_abort(); } } - static void MC_assert_pair(int prop){ if (MC_IS_ENABLED && !prop) { XBT_INFO("**************************"); @@ -572,3 +606,676 @@ double MC_process_clock_get(smx_process_t process) else return 0; } + +void MC_automaton_load(const char *file){ + + 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; + else + MC_UNSET_RAW_MEM; + +} + +void MC_automaton_new_propositional_symbol(const char* id, void* fct) { + + 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_new_propositional_symbol(_mc_property_automaton,id,fct); + + MC_UNSET_RAW_MEM; + + if(raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + +} + +/************ MC_ignore ***********/ + +void MC_ignore_init(){ + MC_SET_RAW_MEM; + mmalloc_ignore = xbt_dynar_new(sizeof(mc_ignore_region_t), NULL); + stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL); + MC_UNSET_RAW_MEM; +} + +void MC_ignore(void *address, size_t size){ + + MC_SET_RAW_MEM; + + mc_ignore_region_t region = NULL; + region = xbt_new0(s_mc_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; + }else{ + region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type; + } + + unsigned int cursor = 0; + mc_ignore_region_t current_region; + xbt_dynar_foreach(mmalloc_ignore, cursor, current_region){ + if(current_region->address > address) + break; + } + + xbt_dynar_insert_at(mmalloc_ignore, cursor, ®ion); + + MC_UNSET_RAW_MEM; +} + +void MC_new_stack_area(void *stack, char *name){ + MC_SET_RAW_MEM; + stack_region_t region = NULL; + region = xbt_new0(s_stack_region_t, 1); + region->address = stack; + region->process_name = strdup(name); + xbt_dynar_push(stacks_areas, ®ion); + MC_UNSET_RAW_MEM; +} + +/************ DWARF ***********/ + +static e_dw_location_type get_location(char *expr, dw_location_t entry); + +void MC_get_binary_local_variables(){ + + char *command = bprintf("dwarfdump -i %s", xbt_binary_name); + + FILE* fp = popen(command, "r"); + + if(fp == NULL) + perror("popen failed"); + + char *line = NULL, *tmp_line = NULL, *tmp_location = NULL, *frame_name = NULL; + ssize_t read; + size_t n = 0; + int valid_variable = 1, valid_frame = 1; + char *node_type = NULL, *location_type = NULL, *variable_name = NULL, *lowpc = NULL, *highpc = NULL; + xbt_dynar_t split = NULL; + + void *low_pc = NULL, *old_low_pc = NULL; + + int compile_unit_found = 0; /* Detect if the program has been compiled with -g */ + + read = getline(&line, &n, fp); + + while (read != -1) { + + if(n == 0) + continue; + + /* Wipeout the new line character */ + line[read - 1] = '\0'; + + if(line[0] == '<'){ + + /* If the program hasn't been compiled with -g, no symbol (line starting with '<' ) found */ + compile_unit_found = 1; + + /* Get node type */ + strtok(line, " "); + strtok(NULL, " "); + node_type = strtok(NULL, " "); + + if(strcmp(node_type, "DW_TAG_subprogram") == 0){ /* New frame */ + + read = getline(&line, &n, fp); + + while(read != -1 && line[0] != '<'){ + + if(n == 0) + continue; + + node_type = strtok(line, " "); + + if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){ + + frame_name = strdup(strtok(NULL, " ")); + xbt_str_trim(frame_name, NULL); + xbt_str_trim(frame_name, "\""); + read = getline(&line, &n, fp); + + }else if(node_type != NULL && strcmp(node_type, "DW_AT_frame_base") == 0){ + + if(valid_frame == 1){ + + dw_frame_t frame = xbt_new0(s_dw_frame_t, 1); + frame->name = strdup(frame_name); + frame->variables = xbt_dynar_new(sizeof(dw_local_variable_t), NULL); + frame->location = xbt_new0(s_dw_location_t, 1); + + location_type = strtok(NULL, " "); + + if(strcmp(location_type, "location->type = e_dw_loclist; + frame->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL); + + read = getline(&line, &n, fp); + xbt_str_ltrim(line, NULL); + + while(read != -1 && line[0] == '['){ + + strtok(line, "<"); + lowpc = strdup(strtok(NULL, "<")); + highpc = strdup(strtok(NULL, ">")); + tmp_location = strdup(strtok(NULL, ">")); + lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */ + + dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1); + + if(low_pc == NULL){ + strtok(lowpc, "="); + new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16); + strtok(highpc, "="); + new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16); + }else{ + strtok(lowpc, "="); + old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16); + new_entry->lowpc = (char *)low_pc + (long)old_low_pc; + strtok(highpc, "="); + new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc); + } + + new_entry->location = xbt_new0(s_dw_location_t, 1); + + get_location(tmp_location, new_entry->location); + + xbt_dynar_push(frame->location->location.loclist, &new_entry); + + read = getline(&line, &n, fp); + xbt_str_ltrim(line, NULL); + } + + }else{ + read = getline(&line, &n, fp); + frame->location->type = get_location(location_type, frame->location); + + } + + xbt_dynar_push(mc_binary_local_variables, &frame); + + }else{ + + read = getline(&line, &n, fp); + + } + + }else if(node_type != NULL && (strcmp(node_type, "DW_AT_declaration") == 0 || strcmp(node_type, "DW_AT_abstract_origin") == 0 || strcmp(node_type, "DW_AT_artificial") == 0)){ + + read = getline(&line, &n, fp); + valid_frame = 0; + + }else{ + + read = getline(&line, &n, fp); + + } + + } + + valid_frame = 1; + + }else if(strcmp(node_type, "DW_TAG_variable") == 0){ /* New variable */ + + variable_name = NULL; + location_type = NULL; + + read = getline(&line, &n, fp); + + while(read != -1 && line[0] != '<'){ + + if(n == 0) + continue; + + tmp_line = strdup(line); + + node_type = strtok(line, " "); + + if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){ + + variable_name = strdup(strtok(NULL, " ")); + xbt_str_trim(variable_name, NULL); + xbt_str_trim(variable_name, "\""); + read = getline(&line, &n, fp); + + }else if(node_type != NULL && strcmp(node_type, "DW_AT_location") == 0){ + + if(valid_variable == 1){ + + location_type = strdup(strtok(NULL, " ")); + + dw_local_variable_t variable = xbt_new0(s_dw_local_variable_t, 1); + variable->name = strdup(variable_name); + variable->location = xbt_new0(s_dw_location_t, 1); + + if(strcmp(location_type, "location->type = e_dw_loclist; + variable->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL); + + read = getline(&line, &n, fp); + xbt_str_ltrim(line, NULL); + + while(read != -1 && line[0] == '['){ + + strtok(line, "<"); + lowpc = strdup(strtok(NULL, "<")); + highpc = strdup(strtok(NULL, ">")); + tmp_location = strdup(strtok(NULL, ">")); + lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */ + + dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1); + + if(low_pc == NULL){ + strtok(lowpc, "="); + new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16); + strtok(highpc, "="); + new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16); + }else{ + strtok(lowpc, "="); + old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16); + new_entry->lowpc = (char *)low_pc + (long)old_low_pc; + strtok(highpc, "="); + new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc); + } + + new_entry->location = xbt_new0(s_dw_location_t, 1); + + get_location(tmp_location, new_entry->location); + + xbt_dynar_push(variable->location->location.loclist, &new_entry); + + read = getline(&line, &n, fp); + xbt_str_ltrim(line, NULL); + } + + }else{ + + xbt_str_strip_spaces(tmp_line); + split = xbt_str_split(tmp_line, " "); + xbt_dynar_remove_at(split, 0, NULL); + location_type = xbt_str_join(split, " "); + + variable->location->type = get_location(location_type, variable->location); + read = getline(&line, &n, fp); + + } + + xbt_dynar_push(((dw_frame_t)xbt_dynar_get_as(mc_binary_local_variables, xbt_dynar_length(mc_binary_local_variables) - 1, dw_frame_t))->variables, &variable); + + }else{ + + read = getline(&line, &n, fp); + + } + + }else if(node_type != NULL && (strcmp(node_type, "DW_AT_artificial") == 0 || strcmp(node_type, "DW_AT_external") == 0)){ + + valid_variable = 0; + read = getline(&line, &n, fp); + + }else{ + + read = getline(&line, &n, fp); + + } + + } + + valid_variable = 1; + + }else if(strcmp(node_type, "DW_TAG_compile_unit") == 0){ + + read = getline(&line, &n, fp); + + while(read != -1 && line[0] != '<'){ + + if(n == 0) + continue; + + node_type = strtok(line, " "); + + if(node_type != NULL && strcmp(node_type, "DW_AT_low_pc") == 0){ + low_pc = (void *) strtoul(strtok(NULL, " "), NULL, 16); + } + + read = getline(&line, &n, fp); + + } + + }else{ + + read = getline(&line, &n, fp); + + } + + }else{ + + read = getline(&line, &n, fp); + + } + + } + + if(compile_unit_found == 0){ + XBT_INFO("Your program must be compiled with -g"); + xbt_abort(); + } + + if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) + print_local_variables(mc_binary_local_variables); + + free(line); free(tmp_line); free(tmp_location); free(frame_name); + free(node_type); free(location_type); free(variable_name); free(lowpc); free(highpc); + free(command); + pclose(fp); +} + +void print_local_variables(xbt_dynar_t list){ + + dw_frame_t frame; + dw_local_variable_t variable; + dw_location_entry_t entry; + dw_location_t location_entry; + unsigned int cursor = 0, cursor2 = 0, cursor3 = 0, cursor4 = 0; + + xbt_dynar_foreach(list, cursor, frame){ + fprintf(stderr, "Frame name : %s", frame->name); + fprintf(stderr, "Location type : %d\n", frame->location->type); + fprintf(stderr, "Variables : (%lu)\n", xbt_dynar_length(frame->variables)); + xbt_dynar_foreach(frame->variables, cursor2, variable){ + fprintf(stderr, "Name : %s", variable->name); + fprintf(stderr, "Location type : %d\n", variable->location->type); + switch(variable->location->type){ + case e_dw_loclist : + xbt_dynar_foreach(variable->location->location.loclist, cursor3, entry){ + fprintf(stderr, "Lowpc : %p, Highpc : %p,", entry->lowpc, entry->highpc); + switch(entry->location->type){ + case e_dw_register : + fprintf(stderr, " Location : in register %d\n", entry->location->location.reg); + break; + case e_dw_bregister_op: + fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg); + break; + case e_dw_lit: + fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit); + break; + case e_dw_fbregister_op: + fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op); + break; + case e_dw_compose: + fprintf(stderr, " Location :\n"); + xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){ + switch(location_entry->type){ + case e_dw_register : + fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg); + break; + case e_dw_bregister_op: + fprintf(stderr, " %d) add %d to the value in register %d\n", cursor4 + 1, location_entry->location.breg_op.offset, location_entry->location.breg_op.reg); + break; + case e_dw_lit: + fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit); + break; + case e_dw_fbregister_op: + fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op); + break; + case e_dw_deref: + fprintf(stderr, " %d) Pop the stack entry and treats it as an address (size of data %d)\n", cursor4 + 1, location_entry->location.deref_size); + break; + case e_dw_arithmetic : + fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic); + break; + case e_dw_piece: + fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece); + break; + case e_dw_constant : + fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value); + break; + default : + fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1); + break; + } + } + break; + default: + fprintf(stderr, "Location type not supported\n"); + break; + } + } + break; + case e_dw_compose: + cursor4 = 0; + fprintf(stderr, "Location :\n"); + xbt_dynar_foreach(variable->location->location.compose, cursor4, location_entry){ + switch(location_entry->type){ + case e_dw_register : + fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg); + break; + case e_dw_bregister_op: + fprintf(stderr, " %d) add %d to the value in register %d\n", cursor4 + 1, location_entry->location.breg_op.offset, location_entry->location.breg_op.reg); + break; + case e_dw_lit: + fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit); + break; + case e_dw_fbregister_op: + fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op); + break; + case e_dw_deref: + fprintf(stderr, " %d) Pop the stack entry and treats it as an address (size of data %d)\n", cursor4 + 1, location_entry->location.deref_size); + break; + case e_dw_arithmetic : + fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic); + break; + case e_dw_piece: + fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece); + break; + case e_dw_constant : + fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value); + break; + default : + fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1); + break; + } + } + break; + default : + fprintf(stderr, "Location type not supported\n"); + break; + } + } + } + +} + +static e_dw_location_type get_location(char *expr, dw_location_t entry){ + + int cursor = 0; + char *tok = NULL, *tmp_tok = NULL; + + xbt_dynar_t tokens = xbt_str_split(expr, NULL); + xbt_dynar_remove_at(tokens, xbt_dynar_length(tokens) - 1, NULL); + + if(xbt_dynar_length(tokens) > 1){ + + entry->type = e_dw_compose; + entry->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL); + + while(cursor < xbt_dynar_length(tokens)){ + + tok = xbt_dynar_get_as(tokens, cursor, char*); + + if(strncmp(tok, "DW_OP_reg", 9) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_register; + if(tok[9] == 'x'){ + new_element->location.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*)); + }else{ + new_element->location.reg = atoi(strtok(tok, "DW_OP_reg")); + } + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strcmp(tok, "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(tokens, ++cursor, char*)); + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strncmp(tok, "DW_OP_breg", 10) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_bregister_op; + if(tok[10] == 'x'){ + new_element->location.breg_op.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*)); + new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*)); + }else{ + if(strchr(tok,'+') != NULL){ + tmp_tok = strtok(tok,"DW_OP_breg"); + new_element->location.breg_op.reg = atoi(strtok(tmp_tok,"+")); + new_element->location.breg_op.offset = atoi(strtok(NULL,"+")); + }else{ + new_element->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg")); + new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*)); + } + } + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strncmp(tok, "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(tok, "DW_OP_lit")); + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_piece") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_piece; + if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) + new_element->location.piece = atoi(xbt_dynar_get_as(tokens, cursor, char*)); + else + new_element->location.piece = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0'; + xbt_dynar_push(entry->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 || + strcmp(tok, "DW_OP_plus_uconst") == 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(tok, "DW_OP_")); + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_stack_value") == 0){ + cursor++; + }else if(strcmp(tok, "DW_OP_deref_size") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_deref; + if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) + new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*)); + else + new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0'; + xbt_dynar_push(entry->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(entry->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_constu") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_constant; + new_element->location.constant.is_signed = 0; + new_element->location.constant.bytes = 1; + if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) + new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*)); + else + new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0'; + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_consts") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_constant; + new_element->location.constant.is_signed = 1; + new_element->location.constant.bytes = 1; + new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*)); + xbt_dynar_push(entry->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_const1u") == 0 || + strcmp(tok, "DW_OP_const2u") == 0 || + strcmp(tok, "DW_OP_const4u") == 0 || + strcmp(tok, "DW_OP_const8u") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_constant; + new_element->location.constant.is_signed = 0; + new_element->location.constant.bytes = tok[11] - '0'; + if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) + new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*)); + else + new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0'; + xbt_dynar_push(entry->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_constant; + new_element->location.constant.is_signed = 1; + new_element->location.constant.bytes = tok[11] - '0'; + new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*)); + xbt_dynar_push(entry->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(entry->location.compose, &new_element); + } + + cursor++; + + } + + free(tok); + free(tmp_tok); + /*xbt_dynar_free(&tokens);*/ + + return e_dw_compose; + + }else{ + + if(strncmp(expr, "DW_OP_reg", 9) == 0){ + entry->type = e_dw_register; + entry->location.reg = atoi(strtok(expr,"DW_OP_reg")); + }else if(strncmp(expr, "DW_OP_breg", 10) == 0){ + entry->type = e_dw_bregister_op; + tok = strtok(expr, "+"); + entry->location.breg_op.offset = atoi(strtok(NULL, "+")); + entry->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg")); + }else{ + entry->type = e_dw_unsupported; + } + + free(tok); + free(tmp_tok); + + return entry->type; + + } + +}