/* 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 <string.h>
+
+#include "mc_base.h"
+
+#ifndef _XBT_WIN32
#include <unistd.h>
-#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
-#include <libgen.h>
+#endif
#include "simgrid/sg_config.h"
#include "../surf/surf_private.h"
#include "../simix/smx_private.h"
-#include "../xbt/mmalloc/mmprivate.h"
#include "xbt/fifo.h"
-#include "mc_private.h"
#include "xbt/automaton.h"
#include "xbt/dict.h"
-XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
+#ifdef HAVE_MC
+#include <libunwind.h>
+#include <xbt/mmalloc.h>
+
+#include "../xbt/mmalloc/mmprivate.h"
+#include "mc_object_info.h"
+#include "mc_comm_pattern.h"
+#include "mc_request.h"
+#include "mc_safety.h"
+#include "mc_memory_map.h"
+#include "mc_snapshot.h"
+#include "mc_liveness.h"
+#include "mc_private.h"
+#include "mc_unw.h"
+#endif
+#include "mc_record.h"
+#include "mc_protocol.h"
+#include "mc_client.h"
+
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
"Logging specific to MC (global)");
-/* Configuration support */
-e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset;
+e_mc_mode_t mc_mode;
-int _sg_do_model_check = 0;
-int _sg_mc_checkpoint=0;
-char* _sg_mc_property_file=NULL;
-int _sg_mc_timeout=0;
-int _sg_mc_hash=0;
-int _sg_mc_max_depth=1000;
-int _sg_mc_visited=0;
-char *_sg_mc_dot_output_file = NULL;
-int _sg_mc_comms_determinism=0;
-int _sg_mc_send_determinism=0;
+double *mc_time = NULL;
+#ifdef HAVE_MC
int user_max_depth_reached = 0;
-void _mc_cfg_cb_reduce(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a reduction strategy after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- char *val= xbt_cfg_get_string(_sg_cfg_set, name);
- if (!strcasecmp(val,"none")) {
- mc_reduce_kind = e_mc_reduce_none;
- } else if (!strcasecmp(val,"dpor")) {
- mc_reduce_kind = e_mc_reduce_dpor;
- } else {
- xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
- }
-}
-
-void _mc_cfg_cb_checkpoint(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a checkpointing value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_checkpoint = xbt_cfg_get_int(_sg_cfg_set, name);
-}
-void _mc_cfg_cb_property(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a property after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_property_file= xbt_cfg_get_string(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_timeout(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a value to enable/disable timeout for wait requests after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_timeout= xbt_cfg_get_boolean(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_hash(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a value to enable/disable the use of global hash to speedup state comparaison, but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_hash= xbt_cfg_get_boolean(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_max_depth(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a max depth value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_max_depth= xbt_cfg_get_int(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_visited(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a number of stored visited states after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_visited= xbt_cfg_get_int(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_dot_output(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a file name for a dot output of graph state after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_dot_output_file= xbt_cfg_get_string(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_comms_determinism(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a value to enable/disable the detection of determinism in the communications schemes after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_comms_determinism= xbt_cfg_get_boolean(_sg_cfg_set, name);
-}
-
-void _mc_cfg_cb_send_determinism(const char *name, int pos) {
- if (_sg_cfg_init_status && !_sg_do_model_check) {
- xbt_die("You are specifying a value to enable/disable the detection of send-determinism in the communications schemes after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
- }
- _sg_mc_send_determinism= xbt_cfg_get_boolean(_sg_cfg_set, name);
-}
-
/* MC global data structures */
mc_state_t mc_current_state = NULL;
char mc_replay_mode = FALSE;
-double *mc_time = NULL;
+
__thread mc_comparison_times_t mc_comp_times = NULL;
__thread double mc_snapshot_comparison_time;
mc_stats_t mc_stats = NULL;
-
-/* Safety */
-xbt_fifo_t mc_stack_safety = NULL;
-mc_global_t initial_state_safety = NULL;
+mc_global_t initial_global_state = NULL;
+xbt_fifo_t mc_stack = NULL;
/* Liveness */
-xbt_fifo_t mc_stack_liveness = NULL;
-mc_global_t initial_state_liveness = NULL;
-int compare;
-
xbt_automaton_t _mc_property_automaton = NULL;
-/* Variables */
-mc_object_info_t mc_libsimgrid_info = NULL;
-mc_object_info_t mc_binary_info = NULL;
-
-mc_object_info_t mc_object_infos[2] = { NULL, NULL };
-size_t mc_object_infos_size = 2;
-
-/* Ignore mechanism */
-extern xbt_dynar_t mc_heap_comparison_ignore;
-extern xbt_dynar_t stacks_areas;
-
/* Dot output */
FILE *dot_output = NULL;
-const char* colors[13];
-
-
-/******************************* DWARF Information *******************************/
-/**********************************************************************************/
-
-/************************** Free functions *************************/
-
-void mc_frame_free(dw_frame_t frame){
- xbt_free(frame->name);
- mc_dwarf_location_list_clear(&(frame->frame_base));
- xbt_dynar_free(&(frame->variables));
- xbt_free(frame);
-}
-
-void dw_type_free(dw_type_t t){
- xbt_free(t->name);
- xbt_free(t->dw_type_id);
- xbt_dynar_free(&(t->members));
- mc_dwarf_expression_clear(&t->location);
- xbt_free(t);
-}
-
-void dw_variable_free(dw_variable_t v){
- if(v){
- xbt_free(v->name);
- xbt_free(v->type_origin);
-
- if(v->locations.locations)
- mc_dwarf_location_list_clear(&v->locations);
- xbt_free(v);
- }
-}
-
-void dw_variable_free_voidp(void *t){
- dw_variable_free((dw_variable_t) * (void **) t);
-}
-
-// ***** object_info
-
-
-
-mc_object_info_t MC_new_object_info(void) {
- mc_object_info_t res = xbt_new0(s_mc_object_info_t, 1);
- res->subprograms = xbt_dict_new_homogeneous((void (*)(void*))mc_frame_free);
- res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp);
- res->types = xbt_dict_new_homogeneous((void (*)(void*))dw_type_free);
- res->full_types_by_name = xbt_dict_new_homogeneous(NULL);
- return res;
-}
+const char *colors[13];
-void MC_free_object_info(mc_object_info_t* info) {
- xbt_free(&(*info)->file_name);
- xbt_dict_free(&(*info)->subprograms);
- xbt_dynar_free(&(*info)->global_variables);
- xbt_dict_free(&(*info)->types);
- xbt_dict_free(&(*info)->full_types_by_name);
- xbt_free(info);
- xbt_dynar_free(&(*info)->functions_index);
- *info = NULL;
-}
-// ***** Helpers
+/******************************* Initialisation of MC *******************************/
+/*********************************************************************************/
-void* MC_object_base_address(mc_object_info_t info) {
- void* result = info->start_exec;
- if(info->start_rw!=NULL && result > (void*) info->start_rw) result = info->start_rw;
- if(info->start_ro!=NULL && result > (void*) info->start_ro) result = info->start_ro;
- return result;
-}
+static void MC_init_dot_output()
+{ /* FIXME : more colors */
-// ***** Functions index
+ 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";
-static int MC_compare_frame_index_items(mc_function_index_item_t a, mc_function_index_item_t b) {
- if(a->low_pc < b->low_pc)
- return -1;
- else if(a->low_pc == b->low_pc)
- return 0;
- else
- return 1;
-}
+ dot_output = fopen(_sg_mc_dot_output_file, "w");
-static void MC_make_functions_index(mc_object_info_t info) {
- xbt_dynar_t index = xbt_dynar_new(sizeof(s_mc_function_index_item_t), NULL);
-
- // Populate the array:
- dw_frame_t frame = NULL;
- xbt_dict_cursor_t cursor;
- char* key;
- xbt_dict_foreach(info->subprograms, cursor, key, frame) {
- if(frame->low_pc==NULL)
- continue;
- s_mc_function_index_item_t entry;
- entry.low_pc = frame->low_pc;
- entry.high_pc = frame->high_pc;
- entry.function = frame;
- xbt_dynar_push(index, &entry);
+ if (dot_output == NULL) {
+ perror("Error open dot output file");
+ xbt_abort();
}
- mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(index, 0);
+ 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");
- // Sort the array by low_pc:
- qsort(base,
- xbt_dynar_length(index),
- sizeof(s_mc_function_index_item_t),
- (int (*)(const void *, const void *))MC_compare_frame_index_items);
-
- info->functions_index = index;
}
-mc_object_info_t MC_ip_find_object_info(void* ip) {
- size_t i;
- for(i=0; i!=mc_object_infos_size; ++i) {
- if(ip >= (void*)mc_object_infos[i]->start_exec && ip <= (void*)mc_object_infos[i]->end_exec) {
- return mc_object_infos[i];
- }
- }
- return NULL;
+void MC_init()
+{
+ MC_init_pid(getpid(), -1);
}
-static dw_frame_t MC_find_function_by_ip_and_object(void* ip, mc_object_info_t info) {
- xbt_dynar_t dynar = info->functions_index;
- mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(dynar, 0);
- int i = 0;
- int j = xbt_dynar_length(dynar) - 1;
- while(j>=i) {
- int k = i + ((j-i)/2);
- if(ip < base[k].low_pc) {
- j = k-1;
- } else if(ip > base[k].high_pc) {
- i = k+1;
+void MC_init_pid(pid_t pid, int socket)
+{
+ if (mc_mode == MC_MODE_NONE) {
+ if (getenv(MC_ENV_SOCKET_FD)) {
+ mc_mode = MC_MODE_CLIENT;
} else {
- return base[k].function;
- }
- }
- return NULL;
-}
-
-dw_frame_t MC_find_function_by_ip(void* ip) {
- mc_object_info_t info = MC_ip_find_object_info(ip);
- if(info==NULL)
- return NULL;
- else
- return MC_find_function_by_ip_and_object(ip, info);
-}
-
-static void MC_post_process_variables(mc_object_info_t info) {
- unsigned cursor = 0;
- dw_variable_t variable = NULL;
- xbt_dynar_foreach(info->global_variables, cursor, variable) {
- if(variable->type_origin) {
- variable->type = xbt_dict_get_or_null(info->types, variable->type_origin);
- }
- }
-}
-
-static void MC_post_process_functions(mc_object_info_t info) {
- xbt_dict_cursor_t cursor;
- char* key;
- dw_frame_t function = NULL;
- xbt_dict_foreach(info->subprograms, cursor, key, function) {
- unsigned cursor2 = 0;
- dw_variable_t variable = NULL;
- xbt_dynar_foreach(function->variables, cursor2, variable) {
- if(variable->type_origin) {
- variable->type = xbt_dict_get_or_null(info->types, variable->type_origin);
- }
- }
- }
-}
-
-/** \brief Finds informations about a given shared object/executable */
-mc_object_info_t MC_find_object_info(memory_map_t maps, char* name, int executable) {
- mc_object_info_t result = MC_new_object_info();
- if(executable)
- result->flags |= MC_OBJECT_INFO_EXECUTABLE;
- result->file_name = xbt_strdup(name);
- MC_find_object_address(maps, result);
- MC_dwarf_get_variables(result);
- MC_post_process_types(result);
- MC_post_process_variables(result);
- MC_post_process_functions(result);
- MC_make_functions_index(result);
- return result;
-}
-
-/*************************************************************************/
-
-/** \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;
-
-/**************************** 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 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;
- }
+ mc_mode = MC_MODE_STANDALONE;
}
}
-
- if(ignore_found == 1){
- xbt_dynar_remove_at(mc_heap_comparison_ignore, cursor, NULL);
- MC_remove_ignore_heap(address, size);
- }
-
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
-
-}
-void MC_ignore_global_variable(const char *name){
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
- MC_SET_RAW_MEM;
-
- xbt_assert(mc_libsimgrid_info, "MC subsystem not initialized");
+ mc_time = xbt_new0(double, simix_process_maxpid);
- unsigned int cursor = 0;
- dw_variable_t current_var;
- int start = 0;
- int end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1;
+ /* Initialize the data structures that must be persistent across every
+ iteration of the model-checker (in RAW memory) */
- 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;
- }
- }
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
-}
+ mc_model_checker = MC_model_checker_new(pid, socket);
-static void MC_ignore_local_variable_in_object(const char *var_name, const char *frame_name, mc_object_info_t info) {
- xbt_dict_cursor_t cursor2;
- dw_frame_t frame;
- int start, end;
- int cursor = 0;
- dw_variable_t current_var;
- char* key;
- xbt_dict_foreach(info->subprograms, cursor2, key, frame) {
-
- if(frame_name && strcmp(frame_name, frame->name))
- continue;
-
- 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);
-
- int compare = strcmp(current_var->name, var_name);
- if(compare == 0){
- xbt_dynar_remove_at(frame->variables, cursor, NULL);
- start = 0;
- end = xbt_dynar_length(frame->variables) - 1;
- }else if(compare < 0){
- start = cursor + 1;
- }else{
- end = cursor - 1;
- }
- }
- }
-}
+ mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1);
-void MC_ignore_local_variable(const char *var_name, const char *frame_name){
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ /* Initialize statistics */
+ mc_stats = xbt_new0(s_mc_stats_t, 1);
+ mc_stats->state_size = 1;
- if(strcmp(frame_name, "*") == 0)
- frame_name = NULL;
+ if ((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0] != '\0'))
+ MC_init_dot_output();
- MC_SET_RAW_MEM;
+ /* Init parmap */
+ //parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT);
- MC_ignore_local_variable_in_object(var_name, frame_name, mc_libsimgrid_info);
- if(frame_name!=NULL)
- MC_ignore_local_variable_in_object(var_name, frame_name, mc_binary_info);
+ MC_SET_STD_HEAP;
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
+ if (_sg_mc_visited > 0 || _sg_mc_liveness) {
+ /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */
+ MC_ignore_local_variable("e", "*");
+ MC_ignore_local_variable("__ex_cleanup", "*");
+ MC_ignore_local_variable("__ex_mctx_en", "*");
+ MC_ignore_local_variable("__ex_mctx_me", "*");
+ MC_ignore_local_variable("__xbt_ex_ctx_ptr", "*");
+ MC_ignore_local_variable("_log_ev", "*");
+ MC_ignore_local_variable("_throw_ctx", "*");
+ MC_ignore_local_variable("ctx", "*");
-}
+ MC_ignore_local_variable("self", "simcall_BODY_mc_snapshot");
+ MC_ignore_local_variable("next_cont"
+ "ext", "smx_ctx_sysv_suspend_serial");
+ MC_ignore_local_variable("i", "smx_ctx_sysv_suspend_serial");
-void MC_new_stack_area(void *stack, char *name, void* context, size_t size){
+ /* Ignore local variable about time used for tracing */
+ MC_ignore_local_variable("start_time", "*");
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ /* Main MC state: */
+ MC_ignore_global_variable("mc_model_checker");
+ MC_ignore_global_variable("initial_communications_pattern");
+ MC_ignore_global_variable("incomplete_communications_pattern");
+ MC_ignore_global_variable("nb_comm_pattern");
- MC_SET_RAW_MEM;
+ /* MC __thread variables: */
+ MC_ignore_global_variable("mc_diff_info");
+ MC_ignore_global_variable("mc_comp_times");
+ MC_ignore_global_variable("mc_snapshot_comparison_time");
- 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;
-}
+ /* This MC state is used in MC replay as well: */
+ MC_ignore_global_variable("mc_time");
-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;
- }
- }
+ /* Static variable used for tracing */
+ MC_ignore_global_variable("counter");
- 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);
- }
- }
+ /* SIMIX */
+ MC_ignore_global_variable("smx_total_comms");
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
-}
+ if (mc_mode == MC_MODE_STANDALONE || mc_mode == MC_MODE_CLIENT) {
+ /* Those requests are handled on the client side and propagated by message
+ * to the server: */
-/******************************* Initialisation of MC *******************************/
-/*********************************************************************************/
+ MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
-static void MC_post_process_object_info(mc_object_info_t info) {
- xbt_dict_cursor_t cursor = NULL;
- char* key = NULL;
- dw_type_t type = NULL;
- xbt_dict_foreach(info->types, cursor, key, type){
-
- // Resolve full_type:
- if(type->name && type->byte_size == 0) {
- for(size_t i=0; i!=mc_object_infos_size; ++i) {
- dw_type_t same_type = xbt_dict_get_or_null(mc_object_infos[i]->full_types_by_name, type->name);
- if(same_type && same_type->name && same_type->byte_size) {
- type->full_type = same_type;
- break;
- }
+ smx_process_t process;
+ xbt_swag_foreach(process, simix_global->process_list) {
+ MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup));
}
}
-
}
-}
-
-static void MC_init_debug_info(void) {
- XBT_INFO("Get debug information ...");
-
- memory_map_t maps = MC_get_memory_map();
-
- /* Get local variables for state equality detection */
- mc_binary_info = MC_find_object_info(maps, xbt_binary_name, 1);
- mc_object_infos[0] = mc_binary_info;
-
- mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path, 0);
- mc_object_infos[1] = mc_libsimgrid_info;
-
- // Use information of the other objects:
- MC_post_process_object_info(mc_binary_info);
- MC_post_process_object_info(mc_libsimgrid_info);
-
- MC_free_memory_map(maps);
- XBT_INFO("Get debug information done !");
-}
-void MC_init(){
+ mmalloc_set_current_heap(heap);
- 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();
-
- /* Init parmap */
- parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT);
-
- MC_UNSET_RAW_MEM;
-
- /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */
- MC_ignore_local_variable("e", "*");
- MC_ignore_local_variable("__ex_cleanup", "*");
- MC_ignore_local_variable("__ex_mctx_en", "*");
- MC_ignore_local_variable("__ex_mctx_me", "*");
- MC_ignore_local_variable("__xbt_ex_ctx_ptr", "*");
- MC_ignore_local_variable("_log_ev", "*");
- MC_ignore_local_variable("_throw_ctx", "*");
- MC_ignore_local_variable("ctx", "*");
-
- MC_ignore_local_variable("self", "simcall_BODY_mc_snapshot");
- MC_ignore_local_variable("next_context", "smx_ctx_sysv_suspend_serial");
- MC_ignore_local_variable("i", "smx_ctx_sysv_suspend_serial");
-
- /* Ignore local variable about time used for tracing */
- MC_ignore_local_variable("start_time", "*");
-
- MC_ignore_global_variable("compared_pointers");
- MC_ignore_global_variable("mc_comp_times");
- MC_ignore_global_variable("mc_snapshot_comparison_time");
- MC_ignore_global_variable("mc_time");
- MC_ignore_global_variable("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_global_variable("smx_total_comms");
-
- MC_ignore_heap(&(simix_global->process_to_run), sizeof(simix_global->process_to_run));
- MC_ignore_heap(&(simix_global->process_that_ran), sizeof(simix_global->process_that_ran));
- MC_ignore_heap(simix_global->process_to_run, sizeof(*(simix_global->process_to_run)));
- MC_ignore_heap(simix_global->process_that_ran, sizeof(*(simix_global->process_that_ran)));
-
- smx_process_t process;
- xbt_swag_foreach(process, simix_global->process_list){
- MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup));
+ if (mc_mode == MC_MODE_CLIENT) {
+ // This will move somehwere else:
+ MC_client_handle_messages();
}
- 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();
- }
-
- 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");
-
}
/******************************* 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;
+static void MC_modelcheck_comm_determinism_init(void)
+{
+ MC_init();
- XBT_INFO("Check a safety property");
- MC_modelcheck_safety();
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
- } else {
+ /* Create exploration stack */
+ mc_stack = xbt_fifo_new();
- if (mc_reduce_kind==e_mc_reduce_unset)
- mc_reduce_kind=e_mc_reduce_none;
+ MC_SET_STD_HEAP;
- XBT_INFO("Check the liveness property %s",_sg_mc_property_file);
- MC_automaton_load(_sg_mc_property_file);
- MC_modelcheck_liveness();
- }
-}
+ MC_pre_modelcheck_comm_determinism();
-void MC_modelcheck_safety(void)
-{
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ MC_SET_MC_HEAP;
+ initial_global_state = xbt_new0(s_mc_global_t, 1);
+ initial_global_state->snapshot = MC_take_snapshot(0);
+ initial_global_state->initial_communications_pattern_done = 0;
+ initial_global_state->comm_deterministic = 1;
+ initial_global_state->send_deterministic = 1;
+ MC_SET_STD_HEAP;
- /* Check if MC is already initialized */
- if (initial_state_safety)
- return;
+ MC_modelcheck_comm_determinism();
- mc_time = xbt_new0(double, simix_process_maxpid);
+ mmalloc_set_current_heap(heap);
+}
- /* mc_time refers to clock for each process -> ignore it for heap comparison */
- MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
+static void MC_modelcheck_safety_init(void)
+{
+ _sg_mc_safety = 1;
- /* Initialize the data structures that must be persistent across every
- iteration of the model-checker (in RAW memory) */
-
- MC_SET_RAW_MEM;
+ MC_init();
- /* Initialize statistics */
- mc_stats = xbt_new0(s_mc_stats_t, 1);
- mc_stats->state_size = 1;
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
/* Create exploration stack */
- mc_stack_safety = xbt_fifo_new();
-
- if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0'))
- MC_init_dot_output();
+ mc_stack = xbt_fifo_new();
- MC_UNSET_RAW_MEM;
+ MC_SET_STD_HEAP;
- if(_sg_mc_visited > 0){
- MC_init();
- }else{
- MC_SET_RAW_MEM;
- MC_init_memory_map_info();
- MC_init_debug_info();
- MC_UNSET_RAW_MEM;
- }
-
- MC_dpor_init();
+ MC_pre_modelcheck_safety();
- MC_SET_RAW_MEM;
+ MC_SET_MC_HEAP;
/* Save the initial state */
- initial_state_safety = xbt_new0(s_mc_global_t, 1);
- initial_state_safety->snapshot = MC_take_snapshot(0);
- initial_state_safety->initial_communications_pattern_done = 0;
- initial_state_safety->comm_deterministic = 1;
- initial_state_safety->send_deterministic = 1;
- MC_UNSET_RAW_MEM;
+ initial_global_state = xbt_new0(s_mc_global_t, 1);
+ initial_global_state->snapshot = MC_take_snapshot(0);
+ MC_SET_STD_HEAP;
- MC_dpor();
+ MC_modelcheck_safety();
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ mmalloc_set_current_heap(heap);
xbt_abort();
//MC_exit();
}
-void MC_modelcheck_liveness(){
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+static void MC_modelcheck_liveness_init()
+{
+ _sg_mc_liveness = 1;
MC_init();
- mc_time = xbt_new0(double, simix_process_maxpid);
-
- /* mc_time refers to clock for each process -> ignore it for heap comparison */
- MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
-
- MC_SET_RAW_MEM;
-
- /* Initialize statistics */
- mc_stats = xbt_new0(s_mc_stats_t, 1);
- mc_stats->state_size = 1;
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
/* Create exploration stack */
- mc_stack_liveness = xbt_fifo_new();
+ mc_stack = xbt_fifo_new();
/* Create the initial state */
- initial_state_liveness = xbt_new0(s_mc_global_t, 1);
+ initial_global_state = xbt_new0(s_mc_global_t, 1);
- if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0'))
- MC_init_dot_output();
-
- MC_UNSET_RAW_MEM;
+ MC_SET_STD_HEAP;
- MC_ddfs_init();
+ MC_pre_modelcheck_liveness();
/* We're done */
MC_print_statistics(mc_stats);
xbt_free(mc_time);
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ mmalloc_set_current_heap(heap);
+
+}
+
+void MC_do_the_modelcheck_for_real()
+{
+ if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
+ XBT_INFO("Check communication determinism");
+ MC_modelcheck_comm_determinism_init();
+ } else if (!_sg_mc_property_file || _sg_mc_property_file[0] == '\0') {
+ if (mc_reduce_kind == e_mc_reduce_unset)
+ mc_reduce_kind = e_mc_reduce_dpor;
+ XBT_INFO("Check a safety property");
+ MC_modelcheck_safety_init();
+ } else {
+ if (mc_reduce_kind == e_mc_reduce_unset)
+ mc_reduce_kind = e_mc_reduce_none;
+ XBT_INFO("Check the liveness property %s", _sg_mc_property_file);
+ MC_automaton_load(_sg_mc_property_file);
+ MC_modelcheck_liveness_init();
+ }
}
//xbt_abort();
}
-int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max){
-
- return simcall->mc_value;
-}
-
-
-int MC_random(int min, int max)
-{
- /*FIXME: return mc_current_state->executed_transition->random.value;*/
- return simcall_mc_random(min, max);
-}
-
-/**
- * \brief Schedules all the process that are ready to run
- */
-void MC_wait_for_requests(void)
+int MC_deadlock_check()
{
- smx_process_t process;
- smx_simcall_t req;
- unsigned int iter;
-
- while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
- SIMIX_process_runall();
- xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
- req = &process->simcall;
- if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
- SIMIX_simcall_pre(req, 0);
+ if (mc_mode == MC_MODE_SERVER) {
+ int res;
+ if ((res = MC_protocol_send_simple_message(mc_model_checker->process.socket,
+ MC_MESSAGE_DEADLOCK_CHECK)))
+ xbt_die("Could not check deadlock state: %s",strerror(res));
+ s_mc_int_message_t message;
+ ssize_t s = MC_receive_message(mc_model_checker->process.socket, &message, sizeof(message));
+ if (s == -1)
+ xbt_die("Could not receive message");
+ else if (s != sizeof(message) || message.type != MC_MESSAGE_DEADLOCK_CHECK_REPLY) {
+ xbt_die("Unexpected message, expected MC_MESSAGE_DEADLOCK_CHECK_REPLY %i %i vs %i %i",
+ (int) s, (int) message.type, (int) sizeof(message), (int) MC_MESSAGE_DEADLOCK_CHECK_REPLY
+ );
}
+ else
+ return message.value;
}
-}
-int MC_deadlock_check()
-{
int deadlock = FALSE;
smx_process_t process;
- if(xbt_swag_size(simix_global->process_list)){
+ if (xbt_swag_size(simix_global->process_list)) {
deadlock = TRUE;
- xbt_swag_foreach(process, simix_global->process_list){
- if(process->simcall.call != SIMCALL_NONE
- && MC_request_is_enabled(&process->simcall)){
+ xbt_swag_foreach(process, simix_global->process_list) {
+ if (MC_request_is_enabled(&process->simcall)) {
deadlock = FALSE;
break;
}
return deadlock;
}
+void handle_comm_pattern(e_mc_call_type_t call_type, smx_simcall_t req, int value, xbt_dynar_t pattern, int backtracking) {
+
+ switch(call_type) {
+ case MC_CALL_TYPE_NONE:
+ break;
+ case MC_CALL_TYPE_SEND:
+ case MC_CALL_TYPE_RECV:
+ get_comm_pattern(pattern, req, call_type);
+ break;
+ case MC_CALL_TYPE_WAIT:
+ case MC_CALL_TYPE_WAITANY:
+ {
+ smx_synchro_t current_comm = NULL;
+ if (call_type == MC_CALL_TYPE_WAIT)
+ current_comm = simcall_comm_wait__get__comm(req);
+ else
+ current_comm = xbt_dynar_get_as(simcall_comm_waitany__get__comms(req), value, smx_synchro_t);
+ // First wait only must be considered:
+ if (current_comm->comm.refcount == 1)
+ complete_comm_pattern(pattern, current_comm, backtracking);
+ break;
+ }
+ default:
+ xbt_die("Unexpected call type %i", (int)call_type);
+ }
+
+}
+
+static void MC_restore_communications_pattern(mc_state_t state) {
+ mc_list_comm_pattern_t list_process_comm;
+ unsigned int cursor, cursor2;
+ xbt_dynar_foreach(initial_communications_pattern, cursor, list_process_comm){
+ list_process_comm->index_comm = (int)xbt_dynar_get_as(state->index_comm, cursor, int);
+ }
+ mc_comm_pattern_t comm;
+ cursor = 0;
+ xbt_dynar_t initial_incomplete_process_comms, incomplete_process_comms;
+ for(int i=0; i<simix_process_maxpid; i++){
+ initial_incomplete_process_comms = xbt_dynar_get_as(incomplete_communications_pattern, i, xbt_dynar_t);
+ xbt_dynar_reset(initial_incomplete_process_comms);
+ incomplete_process_comms = xbt_dynar_get_as(state->incomplete_comm_pattern, i, xbt_dynar_t);
+ xbt_dynar_foreach(incomplete_process_comms, cursor2, comm) {
+ mc_comm_pattern_t copy_comm = xbt_new0(s_mc_comm_pattern_t, 1);
+ copy_comm->index = comm->index;
+ copy_comm->type = comm->type;
+ copy_comm->comm = comm->comm;
+ copy_comm->rdv = strdup(comm->rdv);
+ copy_comm->data_size = -1;
+ copy_comm->data = NULL;
+ if(comm->type == SIMIX_COMM_SEND){
+ copy_comm->src_proc = comm->src_proc;
+ copy_comm->src_host = comm->src_host;
+ if(comm->data != NULL){
+ copy_comm->data_size = comm->data_size;
+ copy_comm->data = xbt_malloc0(comm->data_size);
+ memcpy(copy_comm->data, comm->data, comm->data_size);
+ }
+ }else{
+ copy_comm->dst_proc = comm->dst_proc;
+ copy_comm->dst_host = comm->dst_host;
+ }
+ xbt_dynar_push(initial_incomplete_process_comms, ©_comm);
+ }
+ }
+}
+
/**
* \brief Re-executes from the state at position start all the transitions indicated by
* a given model-checker stack.
* \param stack The stack with the transitions to execute.
* \param start Start index to begin the re-execution.
*/
-void MC_replay(xbt_fifo_t stack, int start)
+void MC_replay(xbt_fifo_t stack)
{
- int raw_mem = (mmalloc_get_current_heap() == raw_heap);
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
- int value, i = 1, count = 1;
+ int value, count = 1, j;
char *req_str;
smx_simcall_t req = NULL, saved_req = NULL;
xbt_fifo_item_t item, start_item;
mc_state_t state;
- smx_process_t process = NULL;
- int comm_pattern = 0;
-
+
XBT_DEBUG("**** Begin Replay ****");
- if(start == -1){
- /* Restore the initial state */
- MC_restore_snapshot(initial_state_safety->snapshot);
- /* At the moment of taking the snapshot the raw heap was set, so restoring
- * it will set it back again, we have to unset it to continue */
- MC_UNSET_RAW_MEM;
+ /* Intermediate backtracking */
+ if(_sg_mc_checkpoint > 0) {
+ start_item = xbt_fifo_get_first_item(stack);
+ state = (mc_state_t)xbt_fifo_get_item_content(start_item);
+ if(state->system_state){
+ MC_restore_snapshot(state->system_state);
+ if(_sg_mc_comms_determinism || _sg_mc_send_determinism)
+ MC_restore_communications_pattern(state);
+ MC_SET_STD_HEAP;
+ return;
+ }
}
+
+ /* Restore the initial state */
+ MC_restore_snapshot(initial_global_state->snapshot);
+ /* At the moment of taking the snapshot the raw heap was set, so restoring
+ * it will set it back again, we have to unset it to continue */
+ MC_SET_STD_HEAP;
+
start_item = xbt_fifo_get_last_item(stack);
- if(start != -1){
- while (i != start){
- start_item = xbt_fifo_get_prev_item(start_item);
- i++;
- }
- }
+
+ MC_SET_MC_HEAP;
- 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 || _sg_mc_send_determinism) {
+ for (j=0; j<simix_process_maxpid; j++) {
+ xbt_dynar_reset((xbt_dynar_t)xbt_dynar_get_as(incomplete_communications_pattern, j, xbt_dynar_t));
+ ((mc_list_comm_pattern_t)xbt_dynar_get_as(initial_communications_pattern, j, mc_list_comm_pattern_t))->index_comm = 0;
}
}
- if(_sg_mc_comms_determinism || _sg_mc_send_determinism)
- xbt_dynar_reset(communications_pattern);
- MC_UNSET_RAW_MEM;
-
+
+ MC_SET_STD_HEAP;
/* Traverse the stack from the state at position start and re-execute the transitions */
for (item = start_item;
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){
+
+ if (saved_req) {
/* because we got a copy of the executed request, we have to fetch the
real one, pointed by the request field of the issuer process */
req = &saved_req->issuer->simcall;
/* Debug information */
- if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ if (XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) {
req_str = MC_request_to_string(req, value);
XBT_DEBUG("Replay: %s (%p)", req_str, state);
xbt_free(req_str);
}
- }
- if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
- if(req->call == SIMCALL_COMM_ISEND)
- comm_pattern = 1;
- else if(req->call == SIMCALL_COMM_IRECV)
- comm_pattern = 2;
- }
+ /* TODO : handle test and testany simcalls */
+ e_mc_call_type_t call = MC_CALL_TYPE_NONE;
+ if (_sg_mc_comms_determinism || _sg_mc_send_determinism)
+ call = mc_get_call_type(req);
- SIMIX_simcall_pre(req, value);
+ SIMIX_simcall_handle(req, value);
- if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
- MC_SET_RAW_MEM;
- if(comm_pattern != 0){
- get_comm_pattern(communications_pattern, req, comm_pattern);
- }
- MC_UNSET_RAW_MEM;
- comm_pattern = 0;
- }
-
- MC_wait_for_requests();
-
- count++;
-
- 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_SET_MC_HEAP;
+ if (_sg_mc_comms_determinism || _sg_mc_send_determinism)
+ handle_comm_pattern(call, req, value, NULL, 1);
+ MC_SET_STD_HEAP;
+
+ MC_wait_for_requests();
+
+ count++;
}
- MC_UNSET_RAW_MEM;
-
+
/* Update statistics */
mc_stats->visited_states++;
mc_stats->executed_transitions++;
}
XBT_DEBUG("**** End Replay ****");
-
- if(raw_mem)
- MC_SET_RAW_MEM;
- else
- MC_UNSET_RAW_MEM;
-
-
+ mmalloc_set_current_heap(heap);
}
-void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
+void MC_replay_liveness(xbt_fifo_t stack)
{
- initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ initial_global_state->raw_mem_set = (mmalloc_get_current_heap() == mc_heap);
- int value;
- char *req_str;
- smx_simcall_t req = NULL, saved_req = NULL;
xbt_fifo_item_t item;
- mc_state_t state;
- mc_pair_t pair;
- int depth = 1;
+ mc_pair_t pair = NULL;
+ mc_state_t state = NULL;
+ smx_simcall_t req = NULL, saved_req = NULL;
+ int value, depth = 1;
+ char *req_str;
XBT_DEBUG("**** Begin Replay ****");
+ /* Intermediate backtracking */
+ if(_sg_mc_checkpoint > 0) {
+ item = xbt_fifo_get_first_item(stack);
+ pair = (mc_pair_t) xbt_fifo_get_item_content(item);
+ if(pair->graph_state->system_state){
+ MC_restore_snapshot(pair->graph_state->system_state);
+ MC_SET_STD_HEAP;
+ return;
+ }
+ }
+
/* Restore the initial state */
- MC_restore_snapshot(initial_state_liveness->snapshot);
+ MC_restore_snapshot(initial_global_state->snapshot);
/* At the moment of taking the snapshot the raw heap was set, so restoring
* it will set it back again, we have to unset it to continue */
- if(!initial_state_liveness->raw_mem_set)
- MC_UNSET_RAW_MEM;
-
- if(all_stack){
-
- item = xbt_fifo_get_last_item(stack);
-
- while(depth <= xbt_fifo_size(stack)){
-
- pair = (mc_pair_t) xbt_fifo_get_item_content(item);
- state = (mc_state_t) pair->graph_state;
-
- if(pair->requests > 0){
-
- saved_req = MC_state_get_executed_request(state, &value);
- //XBT_DEBUG("SavedReq->call %u", saved_req->call);
-
- if(saved_req != NULL){
- /* because we got a copy of the executed request, we have to fetch the
- real one, pointed by the request field of the issuer process */
- req = &saved_req->issuer->simcall;
- //XBT_DEBUG("Req->call %u", req->call);
-
- /* Debug information */
- if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
- req_str = MC_request_to_string(req, value);
- XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
- xbt_free(req_str);
- }
-
- }
-
- SIMIX_simcall_pre(req, value);
- MC_wait_for_requests();
- }
-
- depth++;
-
- /* Update statistics */
- mc_stats->visited_pairs++;
- mc_stats->executed_transitions++;
-
- item = xbt_fifo_get_prev_item(item);
- }
-
- }else{
+ if (!initial_global_state->raw_mem_set)
+ MC_SET_STD_HEAP;
/* Traverse the stack from the initial state and re-execute the transitions */
for (item = xbt_fifo_get_last_item(stack);
item = xbt_fifo_get_prev_item(item)) {
pair = (mc_pair_t) xbt_fifo_get_item_content(item);
+
state = (mc_state_t) pair->graph_state;
- if(pair->requests > 0){
-
+ if (pair->exploration_started) {
+
saved_req = MC_state_get_executed_request(state, &value);
- //XBT_DEBUG("SavedReq->call %u", saved_req->call);
-
- if(saved_req != NULL){
- /* because we got a copy of the executed request, we have to fetch the
+
+ if (saved_req != NULL) {
+ /* because we got a copy of the executed request, we have to fetch the
real one, pointed by the request field of the issuer process */
req = &saved_req->issuer->simcall;
- //XBT_DEBUG("Req->call %u", req->call);
-
+
/* Debug information */
- if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ if (XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) {
req_str = MC_request_to_string(req, value);
XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
xbt_free(req_str);
}
-
+
}
-
- SIMIX_simcall_pre(req, value);
+
+ SIMIX_simcall_handle(req, value);
MC_wait_for_requests();
}
- depth++;
-
/* Update statistics */
mc_stats->visited_pairs++;
mc_stats->executed_transitions++;
+
+ depth++;
+
}
- }
XBT_DEBUG("**** End Replay ****");
- if(initial_state_liveness->raw_mem_set)
- MC_SET_RAW_MEM;
+ if (initial_global_state->raw_mem_set)
+ MC_SET_MC_HEAP;
else
- MC_UNSET_RAW_MEM;
-
+ MC_SET_STD_HEAP;
+
}
/**
*/
void MC_dump_stack_safety(xbt_fifo_t stack)
{
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
MC_show_stack_safety(stack);
-
- if(!_sg_mc_checkpoint){
-
- mc_state_t state;
-
- MC_SET_RAW_MEM;
- while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
- MC_state_delete(state);
- MC_UNSET_RAW_MEM;
-
- }
-
- if(raw_mem_set)
- MC_SET_RAW_MEM;
- else
- MC_UNSET_RAW_MEM;
+ mc_state_t state;
+
+ MC_SET_MC_HEAP;
+ while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
+ MC_state_delete(state, !state->in_visited_states ? 1 : 0);
+ mmalloc_set_current_heap(heap);
}
void MC_show_stack_safety(xbt_fifo_t stack)
{
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
- MC_SET_RAW_MEM;
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
int value;
mc_state_t state;
xbt_fifo_item_t item;
smx_simcall_t req;
char *req_str = NULL;
-
+
for (item = xbt_fifo_get_last_item(stack);
(item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
: (NULL)); item = xbt_fifo_get_prev_item(item)) {
req = MC_state_get_executed_request(state, &value);
- if(req){
+ if (req) {
req_str = MC_request_to_string(req, value);
XBT_INFO("%s", req_str);
xbt_free(req_str);
}
}
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
+ mmalloc_set_current_heap(heap);
}
void MC_show_deadlock(smx_simcall_t req)
{
- /*char *req_str = NULL;*/
+ /*char *req_str = NULL; */
XBT_INFO("**************************");
XBT_INFO("*** DEAD-LOCK DETECTED ***");
XBT_INFO("**************************");
XBT_INFO("Locked request:");
/*req_str = MC_request_to_string(req);
- XBT_INFO("%s", req_str);
- xbt_free(req_str);*/
+ XBT_INFO("%s", req_str);
+ xbt_free(req_str); */
XBT_INFO("Counter-example execution trace:");
- MC_dump_stack_safety(mc_stack_safety);
+ MC_dump_stack_safety(mc_stack);
MC_print_statistics(mc_stats);
}
-void MC_show_stack_liveness(xbt_fifo_t stack){
+void MC_show_stack_liveness(xbt_fifo_t stack)
+{
int value;
mc_pair_t pair;
xbt_fifo_item_t item;
smx_simcall_t req;
char *req_str = NULL;
-
+
for (item = xbt_fifo_get_last_item(stack);
- (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item)))
- : (NULL)); item = xbt_fifo_get_prev_item(item)) {
+ (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item))) : (NULL));
+ item = xbt_fifo_get_prev_item(item)) {
req = MC_state_get_executed_request(pair->graph_state, &value);
- if(req){
- if(pair->requests>0){
- req_str = MC_request_to_string(req, value);
- XBT_INFO("%s", req_str);
- xbt_free(req_str);
- }else{
- XBT_INFO("End of system requests but evolution in Büchi automaton");
- }
+ if (req && req->call != SIMCALL_NONE) {
+ req_str = MC_request_to_string(req, value);
+ XBT_INFO("%s", req_str);
+ xbt_free(req_str);
}
}
}
-void MC_dump_stack_liveness(xbt_fifo_t stack){
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+void MC_dump_stack_liveness(xbt_fifo_t stack)
+{
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
mc_pair_t pair;
-
- MC_SET_RAW_MEM;
while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL)
MC_pair_delete(pair);
- MC_UNSET_RAW_MEM;
-
- if(raw_mem_set)
- MC_SET_RAW_MEM;
-
+ mmalloc_set_current_heap(heap);
}
void MC_print_statistics(mc_stats_t stats)
{
- if(stats->expanded_pairs == 0){
+ if (stats->expanded_pairs == 0) {
XBT_INFO("Expanded states = %lu", stats->expanded_states);
XBT_INFO("Visited states = %lu", stats->visited_states);
- }else{
+ } else {
XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
}
XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
- MC_SET_RAW_MEM;
- if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')){
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
+ if ((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0] != '\0')) {
fprintf(dot_output, "}\n");
fclose(dot_output);
}
- if(initial_state_safety != NULL){
- if(_sg_mc_comms_determinism)
- XBT_INFO("Communication-deterministic : %s", !initial_state_safety->comm_deterministic ? "No" : "Yes");
+ if (initial_global_state != NULL) {
+ if (_sg_mc_comms_determinism)
+ XBT_INFO("Communication-deterministic : %s", !initial_global_state->comm_deterministic ? "No" : "Yes");
if (_sg_mc_send_determinism)
- XBT_INFO("Send-deterministic : %s", !initial_state_safety->send_deterministic ? "No" : "Yes");
+ XBT_INFO("Send-deterministic : %s", !initial_global_state->send_deterministic ? "No" : "Yes");
}
- MC_UNSET_RAW_MEM;
+ mmalloc_set_current_heap(heap);
}
-void MC_assert(int prop)
+void MC_automaton_load(const char *file)
{
- if (MC_is_active() && !prop){
- XBT_INFO("**************************");
- XBT_INFO("*** PROPERTY NOT VALID ***");
- XBT_INFO("**************************");
- XBT_INFO("Counter-example execution trace:");
- MC_dump_stack_safety(mc_stack_safety);
- MC_print_statistics(mc_stats);
- xbt_abort();
- }
-}
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
-void MC_cut(void){
- user_max_depth_reached = 1;
-}
+ if (_mc_property_automaton == NULL)
+ _mc_property_automaton = xbt_automaton_new();
-void MC_process_clock_add(smx_process_t process, double amount)
-{
- mc_time[process->pid] += amount;
+ xbt_automaton_load(_mc_property_automaton, file);
+ mmalloc_set_current_heap(heap);
}
-double MC_process_clock_get(smx_process_t process)
+static void register_symbol(xbt_automaton_propositional_symbol_t symbol)
{
- if(mc_time){
- if(process != NULL)
- return mc_time[process->pid];
- else
- return -1;
- }else{
- return 0;
- }
-}
-
-void MC_automaton_load(const char *file){
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
- MC_SET_RAW_MEM;
+ if (mc_mode != MC_MODE_CLIENT)
+ return;
+ s_mc_register_symbol_message_t message;
+ message.type = MC_MESSAGE_REGISTER_SYMBOL;
+ const char* name = xbt_automaton_propositional_symbol_get_name(symbol);
+ if (strlen(name) + 1 > sizeof(message.name))
+ xbt_die("Symbol is too long");
+ strncpy(message.name, name, sizeof(message.name));
+ message.callback = xbt_automaton_propositional_symbol_get_callback(symbol);
+ message.data = xbt_automaton_propositional_symbol_get_data(symbol);
+ MC_client_send_message(&message, sizeof(message));
+}
+
+void MC_automaton_new_propositional_symbol(const char *id, int(*fct)(void))
+{
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
if (_mc_property_automaton == NULL)
_mc_property_automaton = xbt_automaton_new();
-
- xbt_automaton_load(_mc_property_automaton,file);
-
- MC_UNSET_RAW_MEM;
-
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ xbt_automaton_propositional_symbol_t symbol = xbt_automaton_propositional_symbol_new(_mc_property_automaton, id, fct);
+ register_symbol(symbol);
+ mmalloc_set_current_heap(heap);
}
-void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
-
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
- MC_SET_RAW_MEM;
+void MC_automaton_new_propositional_symbol_pointer(const char *id, int* value)
+{
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
+ if (_mc_property_automaton == NULL)
+ _mc_property_automaton = xbt_automaton_new();
+ xbt_automaton_propositional_symbol_t symbol = xbt_automaton_propositional_symbol_new_pointer(_mc_property_automaton, id, value);
+ register_symbol(symbol);
+ mmalloc_set_current_heap(heap);
+}
+void MC_automaton_new_propositional_symbol_callback(const char* id,
+ xbt_automaton_propositional_symbol_callback_type callback,
+ void* data, xbt_automaton_propositional_symbol_free_function_type free_function)
+{
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
if (_mc_property_automaton == NULL)
_mc_property_automaton = xbt_automaton_new();
+ xbt_automaton_propositional_symbol_t symbol = xbt_automaton_propositional_symbol_new_callback(
+ _mc_property_automaton, id, callback, data, free_function);
+ register_symbol(symbol);
+ mmalloc_set_current_heap(heap);
+}
- xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct);
+void MC_dump_stacks(FILE* file)
+{
+ xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
- MC_UNSET_RAW_MEM;
+ int nstack = 0;
+ stack_region_t current_stack;
+ unsigned cursor;
+ xbt_dynar_foreach(stacks_areas, cursor, current_stack) {
+ unw_context_t * context = (unw_context_t *)current_stack->context;
+ fprintf(file, "Stack %i:\n", nstack);
- if(raw_mem_set)
- MC_SET_RAW_MEM;
-
-}
+ int nframe = 0;
+ char buffer[100];
+ unw_cursor_t c;
+ unw_init_local (&c, context);
+ unw_word_t off;
+ do {
+ const char * name = !unw_get_proc_name(&c, buffer, 100, &off) ? buffer : "?";
+ fprintf(file, " %i: %s\n", nframe, name);
+ ++nframe;
+ } while(unw_step(&c));
+ ++nstack;
+ }
+ mmalloc_set_current_heap(heap);
+}
+#endif
+double MC_process_clock_get(smx_process_t process)
+{
+ if (mc_time) {
+ if (process != NULL)
+ return mc_time[process->pid];
+ else
+ return -1;
+ } else {
+ return 0;
+ }
+}
+void MC_process_clock_add(smx_process_t process, double amount)
+{
+ mc_time[process->pid] += amount;
+}
