-/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
+/* Copyright (c) 2008-2013. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_checkpoint, mc,
"Logging specific to mc_checkpoint");
-void *start_text_libsimgrid;
-void *start_plt_libsimgrid, *end_plt_libsimgrid;
-void *start_got_plt_libsimgrid, *end_got_plt_libsimgrid;
-void *start_plt_binary, *end_plt_binary;
-void *start_got_plt_binary, *end_got_plt_binary;
char *libsimgrid_path;
-void *start_data_libsimgrid, *start_bss_libsimgrid;
-void *start_data_binary, *start_bss_binary;
-void *start_text_binary;
-static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size);
-static void MC_region_restore(mc_mem_region_t reg);
-static void MC_region_destroy(mc_mem_region_t reg);
+static void MC_find_object_address(memory_map_t maps, mc_object_info_t result);
+static void MC_get_plt_section(mc_object_info_t info);
-static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size);
+/************************************ Free functions **************************************/
+/*****************************************************************************************/
-static void add_value(xbt_dynar_t *list, const char *type, unsigned long int val);
-static xbt_dynar_t take_snapshot_stacks(mc_snapshot_t *s, void *heap);
-static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap);
-static void print_local_variables_values(xbt_dynar_t all_variables);
-static void *get_stack_pointer(void *stack_context, void *heap);
+static void MC_snapshot_stack_free(mc_snapshot_stack_t s){
+ if(s){
+ xbt_dynar_free(&(s->local_variables));
+ xbt_free(s);
+ }
+}
+
+static void MC_snapshot_stack_free_voidp(void *s){
+ MC_snapshot_stack_free((mc_snapshot_stack_t) * (void **) s);
+}
+
+static void local_variable_free(local_variable_t v){
+ xbt_free(v->frame);
+ xbt_free(v->name);
+ xbt_free(v->type);
+ xbt_free(v);
+}
+
+static void local_variable_free_voidp(void *v){
+ local_variable_free((local_variable_t) * (void **) v);
+}
+
+static void MC_region_destroy(mc_mem_region_t reg)
+{
+ xbt_free(reg->data);
+ xbt_free(reg);
+}
+
+void MC_free_snapshot(mc_snapshot_t snapshot){
+ unsigned int i;
+ for(i=0; i < NB_REGIONS; i++)
+ MC_region_destroy(snapshot->regions[i]);
+
+ xbt_free(snapshot->stack_sizes);
+ xbt_dynar_free(&(snapshot->stacks));
+ xbt_dynar_free(&(snapshot->to_ignore));
+ xbt_free(snapshot);
+}
-static void snapshot_stack_free(mc_snapshot_stack_t s);
-static xbt_dynar_t take_snapshot_ignore(void);
-static void get_hash_global(char *snapshot_hash, void *data1, void *data2);
-static void get_hash_local(char *snapshot_hash, xbt_dynar_t stacks);
+/******************************* Snapshot regions ********************************/
+/*********************************************************************************/
static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
{
before copying the data */
memcpy(reg->start_addr, reg->data, reg->size);
-
return;
}
-static void MC_region_destroy(mc_mem_region_t reg)
-{
- xbt_free(reg->data);
- xbt_free(reg);
-}
-
static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size)
{
mc_mem_region_t new_reg = MC_region_new(type, start_addr, size);
return;
}
-void MC_init_memory_map_info(){
+static void MC_get_memory_regions(mc_snapshot_t snapshot){
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ FILE *fp;
+ char *line = NULL;
+ ssize_t read;
+ size_t n = 0;
+
+ char *lfields[6] = {0}, *tok;
+ void *start_addr, *start_addr1, *end_addr;
+ size_t size;
+ int i;
- MC_SET_RAW_MEM;
+ fp = fopen("/proc/self/maps", "r");
- unsigned int i = 0;
- s_map_region_t reg;
- memory_map_t maps = get_memory_map();
+ xbt_assert(fp,
+ "Cannot open /proc/self/maps to investigate the memory map of the process. Please report this bug.");
- while (i < maps->mapsize) {
- reg = maps->regions[i];
- if ((reg.prot & PROT_WRITE)){
- if (maps->regions[i].pathname != NULL){
- if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
- start_data_libsimgrid = reg.start_addr;
- i++;
- reg = maps->regions[i];
- if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && i < maps->mapsize)
- start_bss_libsimgrid = reg.start_addr;
- }else if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
- start_data_binary = reg.start_addr;
- i++;
- reg = maps->regions[i];
- if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && reg.start_addr != std_heap && reg.start_addr != raw_heap && i < maps->mapsize){
- start_bss_binary = reg.start_addr;
- i++;
+ setbuf(fp, NULL);
+
+ while((read = xbt_getline(&line, &n, fp)) != -1){
+
+ /* Wipeout the new line character */
+ line[read - 1] = '\0';
+
+ /* Tokenize the line using spaces as delimiters and store each token */
+ lfields[0] = strtok(line, " ");
+
+ for (i = 1; i < 6 && lfields[i - 1] != NULL; i++) {
+ lfields[i] = strtok(NULL, " ");
+ }
+
+ /* First get the permissions flags, need write permission */
+ if(lfields[1][1] == 'w'){
+
+ /* Get the start address of the map */
+ tok = strtok(lfields[0], "-");
+ start_addr = (void *)strtoul(tok, NULL, 16);
+
+ if(start_addr == std_heap){ /* Std_heap ? */
+ tok = strtok(NULL, "-");
+ end_addr = (void *)strtoul(tok, NULL, 16);
+ MC_snapshot_add_region(snapshot, 0, start_addr, (char*)end_addr - (char*)start_addr);
+ snapshot->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
+ }else{ /* map name == libsimgrid || binary_name ? */
+ if(lfields[5] != NULL){
+ if(!memcmp(basename(lfields[5]), "libsimgrid", 10)){
+ tok = strtok(NULL, "-");
+ end_addr = (void *)strtoul(tok, NULL, 16);
+ size = (char*)end_addr - (char*)start_addr;
+ /* BSS and data segments may be separated according to the OS */
+ if((read = xbt_getline(&line, &n, fp)) != -1){
+ line[read - 1] = '\0';
+ lfields[0] = strtok(line, " ");
+ for (i = 1; i < 6 && lfields[i - 1] != NULL; i++) {
+ lfields[i] = strtok(NULL, " ");
+ }
+ if(lfields[1][1] == 'w' && lfields[5] == NULL){
+ tok = strtok(lfields[0], "-");
+ start_addr1 = (void *)strtoul(tok, NULL, 16);
+ tok = strtok(NULL, "-");
+ size += (char *)(void *)strtoul(tok, NULL, 16) - (char*)start_addr1;
+ }
+ }
+ MC_snapshot_add_region(snapshot, 1, start_addr, size);
+ }else if(!memcmp(basename(lfields[5]), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
+ tok = strtok(NULL, "-");
+ end_addr = (void *)strtoul(tok, NULL, 16);
+ size = (char*)end_addr - (char*)start_addr;
+ /* BSS and data segments may be separated according to the OS */
+ if((read = xbt_getline(&line, &n, fp)) != -1){
+ line[read - 1] = '\0';
+ lfields[0] = strtok(line, " ");
+ for (i = 1; i < 6 && lfields[i - 1] != NULL; i++) {
+ lfields[i] = strtok(NULL, " ");
+ }
+ tok = strtok(lfields[0], "-");
+ start_addr1 = (void *)strtoul(tok, NULL, 16);
+ if(lfields[1][1] == 'w'){
+ if(start_addr1 == std_heap){ /* Std_heap ? */
+ tok = strtok(NULL, "-");
+ end_addr = (void *)strtoul(tok, NULL, 16);
+ MC_snapshot_add_region(snapshot, 0, start_addr1, (char*)end_addr - (char*)start_addr1);
+ snapshot->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
+ }else if(start_addr1 != raw_heap){
+ tok = strtok(NULL, "-");
+ size += (char *)(void *)strtoul(tok, NULL, 16) - (char *)start_addr1;
+ }
+ }
+ }
+ MC_snapshot_add_region(snapshot, 2, start_addr, size);
+ }else if (!memcmp(lfields[5], "[stack]", 7)){
+ maestro_stack_start = start_addr;
+ tok = strtok(NULL, "-");
+ maestro_stack_end = (void *)strtoul(tok, NULL, 16);
}
- }else if(!memcmp(maps->regions[i].pathname, "[stack]", 7)){
- maestro_stack_start = reg.start_addr;
- maestro_stack_end = reg.end_addr;
- i++;
- }
- }
- }else if ((reg.prot & PROT_READ) && (reg.prot & PROT_EXEC)){
- if (maps->regions[i].pathname != NULL){
- if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
- start_text_libsimgrid = reg.start_addr;
- libsimgrid_path = strdup(maps->regions[i].pathname);
- }else if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
- start_text_binary = reg.start_addr;
}
}
}
- i++;
+
}
-
- free_memory_map(maps);
- MC_UNSET_RAW_MEM;
-
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ free(line);
+ fclose(fp);
}
-mc_snapshot_t MC_take_snapshot()
-{
- int raw_mem = (mmalloc_get_current_heap() == raw_heap);
-
- MC_SET_RAW_MEM;
-
- mc_snapshot_t snapshot = xbt_new0(s_mc_snapshot_t, 1);
- snapshot->nb_processes = xbt_swag_size(simix_global->process_list);
-
+/** @brief Finds the range of the different memory segments and binary paths */
+void MC_init_memory_map_info(){
+
unsigned int i = 0;
s_map_region_t reg;
- memory_map_t maps = get_memory_map();
- void *heap = NULL;
- size_t size = 0;
- void *start = NULL;
+ memory_map_t maps = MC_get_memory_map();
+
+ maestro_stack_start = NULL;
+ maestro_stack_end = NULL;
+ libsimgrid_path = NULL;
- /* Save the std heap and the writable mapped pages of libsimgrid */
while (i < maps->mapsize) {
reg = maps->regions[i];
- if ((reg.prot & PROT_WRITE)){
- if (maps->regions[i].pathname == NULL){
- if (reg.start_addr == std_heap){ // only save the std heap (and not the raw one)
- MC_snapshot_add_region(snapshot, 0, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
- snapshot->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
- heap = snapshot->regions[0]->data;
- }
- i++;
- } else{
- if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
- size = (char*)reg.end_addr - (char*)reg.start_addr;
- start = reg.start_addr;
- i++;
- reg = maps->regions[i];
- if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && i < maps->mapsize){
- size += (char*)reg.end_addr - (char*)reg.start_addr;
- reg = maps->regions[i];
- i++;
- }
- MC_snapshot_add_region(snapshot, 1, start, size);
- }else if(!memcmp(maps->regions[i].pathname, "[stack]", 7)){
+ if (maps->regions[i].pathname == NULL) {
+ // Nothing to do
+ }
+ else if ((reg.prot & PROT_WRITE) && !memcmp(maps->regions[i].pathname, "[stack]", 7)){
maestro_stack_start = reg.start_addr;
maestro_stack_end = reg.end_addr;
- i++;
- } else if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
- size = (char*)reg.end_addr - (char*)reg.start_addr;
- start = reg.start_addr;
- i++;
- reg = maps->regions[i];
- if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && reg.start_addr != std_heap && reg.start_addr != raw_heap && i < maps->mapsize){
- size += (char*)reg.end_addr - (char*)reg.start_addr;
- reg = maps->regions[i];
- i++;
- }
- MC_snapshot_add_region(snapshot, 2, start, size);
- }else{
- i++;
- }
- }
- }else{
- i++;
+ }else if ((reg.prot & PROT_READ) && (reg.prot & PROT_EXEC) && !memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
+ if(libsimgrid_path == NULL)
+ libsimgrid_path = strdup(maps->regions[i].pathname);
}
+ i++;
}
- snapshot->to_ignore = take_snapshot_ignore();
-
- if(_sg_mc_visited > 0 || strcmp(_sg_mc_property_file,"")){
- snapshot->stacks = take_snapshot_stacks(&snapshot, heap);
- get_hash_global(snapshot->hash_global, snapshot->regions[1]->data, snapshot->regions[2]->data);
- get_hash_local(snapshot->hash_local, snapshot->stacks);
- }
-
- free_memory_map(maps);
-
- MC_UNSET_RAW_MEM;
+ xbt_assert(maestro_stack_start, "maestro_stack_start");
+ xbt_assert(maestro_stack_end, "maestro_stack_end");
+ xbt_assert(libsimgrid_path, "libsimgrid_path&");
- if(raw_mem)
- MC_SET_RAW_MEM;
+ MC_free_memory_map(maps);
- return snapshot;
+}
+/** \brief Finds informations about a given shared object/executable */
+mc_object_info_t MC_find_object_info(memory_map_t maps, char* name) {
+ mc_object_info_t result = MC_new_object_info();
+ result->file_name = xbt_strdup(name);
+ result->start_data = NULL;
+ result->start_text = NULL;
+ MC_find_object_address(maps, result);
+ MC_get_plt_section(result);
+ MC_dwarf_get_variables(result);
+ return result;
}
-void MC_restore_snapshot(mc_snapshot_t snapshot)
-{
- unsigned int i;
- for(i=0; i < NB_REGIONS; i++){
- MC_region_restore(snapshot->regions[i]);
+/** \brief Fills the position of the .bss and .data sections. */
+static void MC_find_object_address(memory_map_t maps, mc_object_info_t result) {
+ unsigned int i = 0;
+ s_map_region_t reg;
+ const char* name = result->file_name;
+ int len = strlen(basename(result->file_name));
+ while (i < maps->mapsize) {
+ reg = maps->regions[i];
+ if (maps->regions[i].pathname == NULL || memcmp(basename(maps->regions[i].pathname), basename(name), len)){
+ // Nothing to do
+ }
+ else if ((reg.prot & PROT_WRITE)){
+ result->start_data = reg.start_addr;
+ i++;
+ reg = maps->regions[i];
+ }else if (reg.prot & PROT_READ) {
+ result->start_text = reg.start_addr;
+ }
+ i++;
}
-}
+ xbt_assert(result->file_name);
+ xbt_assert(result->start_data);
+ xbt_assert(result->start_text);
-void MC_free_snapshot(mc_snapshot_t snapshot)
-{
- unsigned int i;
- for(i=0; i < NB_REGIONS; i++)
- MC_region_destroy(snapshot->regions[i]);
-
- xbt_dynar_free(&(snapshot->stacks));
- xbt_dynar_free(&(snapshot->to_ignore));
- xbt_free(snapshot);
+ MC_get_plt_section(result);
}
-
-void get_libsimgrid_plt_section(){
+/** \brief Fills the position of the .plt and .got.plt sections. */
+static void MC_get_plt_section(mc_object_info_t info){
FILE *fp;
char *line = NULL; /* Temporal storage for each line that is readed */
int i, plt_found = 0;
unsigned long int size, offset;
- char *command = bprintf("objdump --section-headers %s", libsimgrid_path);
+ char *command = bprintf("LANG=C objdump --section-headers %s", info->file_name);
fp = popen(command, "r");
if(lfields[0] == NULL)
continue;
- if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strncmp(lfields[0], libsimgrid_path, strlen(libsimgrid_path)) == 0)
+ if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strncmp(lfields[0], info->file_name, strlen(info->file_name)) == 0)
continue;
for (i = 1; i < 7 && lfields[i - 1] != NULL; i++) {
if(strcmp(lfields[1], ".plt") == 0){
size = strtoul(lfields[2], NULL, 16);
offset = strtoul(lfields[5], NULL, 16);
- start_plt_libsimgrid = (char *)start_text_libsimgrid + offset;
- end_plt_libsimgrid = (char *)start_plt_libsimgrid + size;
+ info->start_plt = (char *) info->start_text + offset;
+ info->end_plt = (char *) info->start_plt + size;
plt_found++;
}else if(strcmp(lfields[1], ".got.plt") == 0){
size = strtoul(lfields[2], NULL, 16);
offset = strtoul(lfields[5], NULL, 16);
- start_got_plt_libsimgrid = (char *)start_text_libsimgrid + offset;
- end_got_plt_libsimgrid = (char *)start_got_plt_libsimgrid + size;
+ info->start_got_plt = (char *) info->start_text + offset;
+ info->end_got_plt = (char *) info->start_plt + size;
plt_found++;
}
}
-void get_binary_plt_section(){
-
- FILE *fp;
- char *line = NULL; /* Temporal storage for each line that is readed */
- ssize_t read; /* Number of bytes readed */
- size_t n = 0; /* Amount of bytes to read by xbt_getline */
-
- char *lfields[7];
- int i, plt_found = 0;
- unsigned long int size;
-
- char *command = bprintf( "objdump --section-headers %s", xbt_binary_name);
-
- fp = popen(command, "r");
-
- if(fp == NULL){
- perror("popen failed");
- xbt_abort();
- }
-
- while ((read = xbt_getline(&line, &n, fp)) != -1 && plt_found != 2) {
-
- if(n == 0)
- continue;
-
- /* Wipeout the new line character */
- line[read - 1] = '\0';
-
- lfields[0] = strtok(line, " ");
-
- if(lfields[0] == NULL)
- continue;
-
- if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strncmp(lfields[0], basename(xbt_binary_name), strlen(xbt_binary_name)) == 0)
- continue;
-
- for (i = 1; i < 7 && lfields[i - 1] != NULL; i++) {
- lfields[i] = strtok(NULL, " ");
- }
-
- if(i>=6){
- if(strcmp(lfields[1], ".plt") == 0){
- size = strtoul(lfields[2], NULL, 16);
- start_plt_binary = (void *)strtoul(lfields[3], NULL, 16);
- end_plt_binary = (char *)start_plt_binary + size;
- plt_found++;
- }else if(strcmp(lfields[1], ".got.plt") == 0){
- size = strtoul(lfields[2], NULL, 16);
- start_got_plt_binary = (char *)strtoul(lfields[3], NULL, 16);
- end_got_plt_binary = (char *)start_got_plt_binary + size;
- plt_found++;
- }
- }
-
-
- }
-
- xbt_free(command);
- xbt_free(line);
- pclose(fp);
-
-}
-
-static void add_value(xbt_dynar_t *list, const char *type, unsigned long int val){
- variable_value_t value = xbt_new0(s_variable_value_t, 1);
- value->type = strdup(type);
- if(strcmp(type, "value") == 0){
- value->value.res = val;
- }else{
- value->value.address = (void *)val;
- }
- xbt_dynar_push(*list, &value);
-}
-
-static xbt_dynar_t take_snapshot_stacks(mc_snapshot_t *snapshot, void *heap){
-
- xbt_dynar_t res = xbt_dynar_new(sizeof(s_mc_snapshot_stack_t), snapshot_stack_free_voidp);
+/************************************* Take Snapshot ************************************/
+/****************************************************************************************/
- unsigned int cursor = 0;
- stack_region_t current_stack;
+static void MC_get_hash_global(char *snapshot_hash, void *data1, void *data2){
- xbt_dynar_foreach(stacks_areas, cursor, current_stack){
- mc_snapshot_stack_t st = xbt_new(s_mc_snapshot_stack_t, 1);
- st->local_variables = get_local_variables_values(current_stack->context, heap);
- st->stack_pointer = get_stack_pointer(current_stack->context, heap);
- xbt_dynar_push(res, &st);
- (*snapshot)->stack_sizes = xbt_realloc((*snapshot)->stack_sizes, (cursor + 1) * sizeof(size_t));
- (*snapshot)->stack_sizes[cursor] = current_stack->size - ((char *)st->stack_pointer - (char *)((char *)heap + ((char *)current_stack->address - (char *)std_heap)));
- }
+ /* unsigned int cursor = 0; */
+ /* size_t offset; */
+ /* global_variable_t current_var; */
+ /* void *addr_pointed = NULL; */
+ /* void *res = NULL; */
- return res;
+ /* xbt_strbuff_t clear = xbt_strbuff_new(); */
+
+ /* xbt_dynar_foreach(mc_global_variables, cursor, current_var){ */
+ /* if(current_var->address < start_data_libsimgrid){ /\* binary *\/ */
+ /* offset = (char *)current_var->address - (char *)start_data_binary; */
+ /* addr_pointed = *((void **)((char *)data2 + offset)); */
+ /* if(((addr_pointed >= start_plt_binary && addr_pointed <= end_plt_binary)) || ((addr_pointed >= std_heap && (char *)addr_pointed <= (char *)std_heap + STD_HEAP_SIZE ))) */
+ /* continue; */
+ /* res = xbt_malloc0(current_var->size + 1); */
+ /* memset(res, 0, current_var->size + 1); */
+ /* memcpy(res, (char*)data2 + offset, current_var->size); */
+ /* }else{ /\* libsimgrid *\/ */
+ /* offset = (char *)current_var->address - (char *)start_data_libsimgrid; */
+ /* addr_pointed = *((void **)((char *)data1 + offset)); */
+ /* if((addr_pointed >= start_plt_libsimgrid && addr_pointed <= end_plt_libsimgrid) || (addr_pointed >= std_heap && (char *)addr_pointed <= (char *)std_heap + STD_HEAP_SIZE )) */
+ /* continue; */
+ /* res = xbt_malloc0(current_var->size + 1); */
+ /* memset(res, 0, current_var->size + 1); */
+ /* memcpy(res, (char*)data1 + offset, current_var->size); */
+ /* } */
+ /* if(res != NULL){ */
+ /* xbt_strbuff_append(clear, (const char*)res); */
+ /* xbt_free(res); */
+ /* res = NULL; */
+ /* } */
+ /* } */
+
+ /* xbt_sha(clear->data, snapshot_hash); */
+
+ /* xbt_strbuff_free(clear); */
}
-static void *get_stack_pointer(void *stack_context, void *heap){
-
- unw_cursor_t c;
- int ret;
- unw_word_t sp;
-
- ret = unw_init_local(&c, (unw_context_t *)stack_context);
- if(ret < 0){
- XBT_INFO("unw_init_local failed");
- xbt_abort();
- }
-
- unw_get_reg(&c, UNW_REG_SP, &sp);
-
- return ((char *)heap + (size_t)(((char *)((long)sp) - (char*)std_heap)));
+static void MC_get_hash_local(char *snapshot_hash, xbt_dynar_t stacks){
+
+ /* xbt_dynar_t tokens = NULL, s_tokens = NULL; */
+ /* unsigned int cursor1 = 0, cursor2 = 0; */
+ /* mc_snapshot_stack_t current_stack; */
+ /* char *frame_name = NULL; */
+ /* void *addr; */
+
+ /* xbt_strbuff_t clear = xbt_strbuff_new(); */
+
+ /* while(cursor1 < xbt_dynar_length(stacks)){ */
+ /* current_stack = xbt_dynar_get_as(stacks, cursor1, mc_snapshot_stack_t); */
+ /* tokens = xbt_str_split(current_stack->local_variables->data, NULL); */
+ /* cursor2 = 0; */
+ /* while(cursor2 < xbt_dynar_length(tokens)){ */
+ /* s_tokens = xbt_str_split(xbt_dynar_get_as(tokens, cursor2, char *), "="); */
+ /* if(xbt_dynar_length(s_tokens) > 1){ */
+ /* if(strcmp(xbt_dynar_get_as(s_tokens, 0, char *), "frame_name") == 0){ */
+ /* xbt_free(frame_name); */
+ /* frame_name = xbt_strdup(xbt_dynar_get_as(s_tokens, 1, char *)); */
+ /* xbt_strbuff_append(clear, (const char*)xbt_dynar_get_as(tokens, cursor2, char *)); */
+ /* cursor2++; */
+ /* xbt_dynar_free(&s_tokens); */
+ /* continue; */
+ /* } */
+ /* addr = (void *) strtoul(xbt_dynar_get_as(s_tokens, 1, char *), NULL, 16); */
+ /* if(addr > std_heap && (char *)addr <= (char *)std_heap + STD_HEAP_SIZE){ */
+ /* cursor2++; */
+ /* xbt_dynar_free(&s_tokens); */
+ /* continue; */
+ /* } */
+ /* if(is_stack_ignore_variable(frame_name, xbt_dynar_get_as(s_tokens, 0, char *))){ */
+ /* cursor2++; */
+ /* xbt_dynar_free(&s_tokens); */
+ /* continue; */
+ /* } */
+ /* xbt_strbuff_append(clear, (const char *)xbt_dynar_get_as(tokens, cursor2, char *)); */
+ /* } */
+ /* xbt_dynar_free(&s_tokens); */
+ /* cursor2++; */
+ /* } */
+ /* xbt_dynar_free(&tokens); */
+ /* cursor1++; */
+ /* } */
+
+ /* xbt_free(frame_name); */
+
+ /* xbt_sha(clear->data, snapshot_hash); */
+
+ /* xbt_strbuff_free(clear); */
}
-static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap){
+static xbt_dynar_t MC_get_local_variables_values(void *stack_context){
unw_cursor_t c;
int ret;
unw_word_t ip, sp, off;
dw_frame_t frame;
-
- xbt_dynar_t compose = xbt_dynar_new(sizeof(variable_value_t), variable_value_free_voidp);
- xbt_strbuff_t variables = xbt_strbuff_new();
- xbt_dict_cursor_t dict_cursor;
- char *variable_name;
- dw_local_variable_t current_variable;
- unsigned int cursor = 0, cursor2 = 0;
+ unsigned int cursor = 0;
+ dw_variable_t current_variable;
dw_location_entry_t entry = NULL;
dw_location_t location_entry = NULL;
unw_word_t res;
- int frame_found = 0;
+ int frame_found = 0, region_type;
void *frame_pointer_address = NULL;
- long true_ip;
- char *to_append;
+ long true_ip, value;
+ int stop = 0;
+
+ xbt_dynar_t variables = xbt_dynar_new(sizeof(local_variable_t), local_variable_free_voidp);
- while(ret >= 0){
+ while(ret >= 0 && !stop){
unw_get_reg(&c, UNW_REG_IP, &ip);
unw_get_reg(&c, UNW_REG_SP, &sp);
unw_get_proc_name(&c, frame_name, sizeof (frame_name), &off);
- frame = xbt_dict_get_or_null(mc_local_variables, frame_name);
+ if(!strcmp(frame_name, "smx_ctx_sysv_wrapper")) /* Stop before context switch with maestro */
+ stop = 1;
+
+ if((long)ip > (long) mc_libsimgrid_info->start_text)
+ frame = xbt_dict_get_or_null(mc_libsimgrid_info->local_variables, frame_name);
+ else
+ frame = xbt_dict_get_or_null(mc_binary_info->local_variables, frame_name);
if(frame == NULL){
- xbt_dynar_free(&compose);
- xbt_dict_cursor_free(&dict_cursor);
- return variables;
+ ret = unw_step(&c);
+ continue;
}
-
- to_append = bprintf("frame_name=%s\n", frame_name);
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
- to_append = bprintf("ip=%lx\n", ip);
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
true_ip = (long)frame->low_pc + (long)off;
+ frame_pointer_address = NULL;
/* Get frame pointer */
switch(frame->frame_base->type){
case e_dw_loclist:
- while((cursor < xbt_dynar_length(frame->frame_base->location.loclist)) && frame_found == 0){
+ cursor = 0;
+ while(cursor < xbt_dynar_length(frame->frame_base->location.loclist) && !frame_found){
entry = xbt_dynar_get_as(frame->frame_base->location.loclist, cursor, dw_location_entry_t);
if((true_ip >= entry->lowpc) && (true_ip < entry->highpc)){
frame_found = 1;
switch(entry->location->type){
case e_dw_compose:
- xbt_dynar_reset(compose);
- cursor2 = 0;
- while(cursor2 < xbt_dynar_length(entry->location->location.compose)){
- location_entry = xbt_dynar_get_as(entry->location->location.compose, cursor2, dw_location_t);
+ if(xbt_dynar_length(entry->location->location.compose) > 1){
+ frame_pointer_address = NULL; /* TODO : location list with optimizations enabled */
+ }else{
+ location_entry = xbt_dynar_get_as(entry->location->location.compose, 0, dw_location_t);
switch(location_entry->type){
case e_dw_register:
unw_get_reg(&c, location_entry->location.reg, &res);
- add_value(&compose, "address", (long)res);
+ frame_pointer_address = (void*)(long)res;
break;
case e_dw_bregister_op:
unw_get_reg(&c, location_entry->location.breg_op.reg, &res);
- add_value(&compose, "address", (long)res + location_entry->location.breg_op.offset);
+ frame_pointer_address = (void*)((long)res + location_entry->location.breg_op.offset);
break;
default:
- xbt_dynar_reset(compose);
+ frame_pointer_address = NULL; /* FIXME : implement other cases (with optimizations enabled) */
break;
}
- cursor2++;
- }
-
- if(!xbt_dynar_is_empty(compose)){
- frame_pointer_address = xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address ;
}
break;
- default :
- frame_pointer_address = NULL;
+ default:
+ frame_pointer_address = NULL; /* FIXME : implement other cases (with optimizations enabled) */
break;
}
}
}
break;
default :
- frame_pointer_address = NULL;
+ frame_pointer_address = NULL; /* FIXME : implement other cases (with optimizations enabled)*/
break;
}
frame_found = 0;
cursor = 0;
- xbt_dict_foreach(frame->variables, dict_cursor, variable_name, current_variable){
- if(current_variable->location != NULL){
- switch(current_variable->location->type){
+ xbt_dynar_foreach(frame->variables, cursor, current_variable){
+
+ if((long)ip > (long)mc_libsimgrid_info->start_text)
+ region_type = 1;
+ else
+ region_type = 2;
+
+ local_variable_t new_var = xbt_new0(s_local_variable_t, 1);
+ new_var->frame = xbt_strdup(frame_name);
+ new_var->ip = (unsigned long)ip;
+ new_var->name = xbt_strdup(current_variable->name);
+ new_var->type = strdup(current_variable->type_origin);
+ new_var->region= region_type;
+
+ if(current_variable->address.location != NULL){
+ switch(current_variable->address.location->type){
case e_dw_compose:
- xbt_dynar_reset(compose);
- cursor = 0;
- while(cursor < xbt_dynar_length(current_variable->location->location.compose)){
- location_entry = xbt_dynar_get_as(current_variable->location->location.compose, cursor, dw_location_t);
+ if(xbt_dynar_length(current_variable->address.location->location.compose) > 1){
+ /* TODO : location list with optimizations enabled */
+ }else{
+ location_entry = xbt_dynar_get_as(current_variable->address.location->location.compose, 0, dw_location_t);
+
switch(location_entry->type){
case e_dw_register:
unw_get_reg(&c, location_entry->location.reg, &res);
- add_value(&compose, "value", (long)res);
+ value = (long)res;
break;
case e_dw_bregister_op:
unw_get_reg(&c, location_entry->location.breg_op.reg, &res);
- add_value(&compose, "address", (long)res + location_entry->location.breg_op.offset);
+ value = (long)res + location_entry->location.breg_op.offset;
break;
case e_dw_fbregister_op:
if(frame_pointer_address != NULL)
- add_value(&compose, "address", (long)((char *)frame_pointer_address + location_entry->location.fbreg_op));
+ value = (long)((char *)frame_pointer_address + location_entry->location.fbreg_op);
+ else
+ value = 0;
break;
default:
- xbt_dynar_reset(compose);
+ value = 0; /* FIXME : implement other cases (with optimizations enabled)*/
break;
}
- cursor++;
- }
-
- if(!xbt_dynar_is_empty(compose)){
- if(strcmp(xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->type, "value") == 0){
- to_append = bprintf("%s=%lx\n", current_variable->name, xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.res);
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
- }else{
- if((long)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address < 0 || *((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) == NULL){
- to_append = bprintf("%s=NULL\n", current_variable->name);
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
- }else if(((long)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) > 0xffffffff) || ((long)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) < (long)start_text_binary)){
- to_append = bprintf("%s=%u\n", current_variable->name, (unsigned int)(long)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address));
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
- }else{
- to_append = bprintf("%s=%p\n", current_variable->name, *((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address));
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
- }
- }
- }else{
- to_append = bprintf("%s=undefined\n", current_variable->name);
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
+
+ if(value)
+ new_var->address = (void *)value;
+ else
+ new_var->address = NULL;
}
break;
default :
break;
}
- }else{
- to_append = bprintf("%s=undefined\n", current_variable->name);
- xbt_strbuff_append(variables, to_append);
- xbt_free(to_append);
}
- }
-
+
+ xbt_dynar_push(variables, &new_var);
+
+ }
+
ret = unw_step(&c);
}
- xbt_dynar_free(&compose);
- xbt_dict_cursor_free(&dict_cursor);
-
return variables;
}
-static void print_local_variables_values(xbt_dynar_t all_variables){
- unsigned cursor = 0;
- mc_snapshot_stack_t stack;
-
- xbt_dynar_foreach(all_variables, cursor, stack){
- XBT_INFO("%s", stack->local_variables->data);
- }
-}
+static void *MC_get_stack_pointer(void *stack_context, void *heap){
+ unw_cursor_t c;
+ int ret;
+ unw_word_t sp;
-static void snapshot_stack_free(mc_snapshot_stack_t s){
- if(s){
- xbt_free(s->local_variables->data);
- xbt_free(s->local_variables);
- xbt_free(s);
+ ret = unw_init_local(&c, (unw_context_t *)stack_context);
+ if(ret < 0){
+ XBT_INFO("unw_init_local failed");
+ xbt_abort();
}
-}
-void snapshot_stack_free_voidp(void *s){
- snapshot_stack_free((mc_snapshot_stack_t) * (void **) s);
-}
-
-mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall){
- return MC_take_snapshot();
-}
+ unw_get_reg(&c, UNW_REG_SP, &sp);
-void *MC_snapshot(void){
+ return ((char *)heap + (size_t)(((char *)((long)sp) - (char*)std_heap)));
- return simcall_mc_snapshot();
-
}
-void variable_value_free(variable_value_t v){
- if(v){
- xbt_free(v->type);
- xbt_free(v);
- }
-}
+static xbt_dynar_t MC_take_snapshot_stacks(mc_snapshot_t *snapshot, void *heap){
-void variable_value_free_voidp(void* v){
- variable_value_free((variable_value_t) * (void **)v);
-}
+ xbt_dynar_t res = xbt_dynar_new(sizeof(s_mc_snapshot_stack_t), MC_snapshot_stack_free_voidp);
-static void get_hash_global(char *snapshot_hash, void *data1, void *data2){
-
unsigned int cursor = 0;
- size_t offset;
- global_variable_t current_var;
- void *addr_pointed = NULL;
- void *res = NULL;
-
- xbt_strbuff_t clear = xbt_strbuff_new();
+ stack_region_t current_stack;
- xbt_dynar_foreach(mc_global_variables, cursor, current_var){
- if(current_var->address < start_data_libsimgrid){ /* binary */
- offset = (char *)current_var->address - (char *)start_data_binary;
- addr_pointed = *((void **)((char *)data2 + offset));
- if(((addr_pointed >= start_plt_binary && addr_pointed <= end_plt_binary)) || ((addr_pointed >= std_heap && (char *)addr_pointed <= (char *)std_heap + STD_HEAP_SIZE )))
- continue;
- res = xbt_malloc0(current_var->size + 1);
- memset(res, 0, current_var->size + 1);
- memcpy(res, (char*)data2 + offset, current_var->size);
- }else{ /* libsimgrid */
- offset = (char *)current_var->address - (char *)start_data_libsimgrid;
- addr_pointed = *((void **)((char *)data1 + offset));
- if((addr_pointed >= start_plt_libsimgrid && addr_pointed <= end_plt_libsimgrid) || (addr_pointed >= std_heap && (char *)addr_pointed <= (char *)std_heap + STD_HEAP_SIZE ))
- continue;
- res = xbt_malloc0(current_var->size + 1);
- memset(res, 0, current_var->size + 1);
- memcpy(res, (char*)data1 + offset, current_var->size);
- }
- if(res != NULL){
- xbt_strbuff_append(clear, (const char*)res);
- xbt_free(res);
- res = NULL;
- }
- }
-
- xbt_sha(clear->data, snapshot_hash);
-
- xbt_strbuff_free(clear);
-
-}
-
-static void get_hash_local(char *snapshot_hash, xbt_dynar_t stacks){
-
- xbt_dynar_t tokens = NULL, s_tokens = NULL;
- unsigned int cursor1 = 0, cursor2 = 0;
- mc_snapshot_stack_t current_stack;
- char *frame_name = NULL;
- void *addr;
-
- xbt_strbuff_t clear = xbt_strbuff_new();
-
- while(cursor1 < xbt_dynar_length(stacks)){
- current_stack = xbt_dynar_get_as(stacks, cursor1, mc_snapshot_stack_t);
- tokens = xbt_str_split(current_stack->local_variables->data, NULL);
- cursor2 = 0;
- while(cursor2 < xbt_dynar_length(tokens)){
- s_tokens = xbt_str_split(xbt_dynar_get_as(tokens, cursor2, char *), "=");
- if(xbt_dynar_length(s_tokens) > 1){
- if(strcmp(xbt_dynar_get_as(s_tokens, 0, char *), "frame_name") == 0){
- xbt_free(frame_name);
- frame_name = xbt_strdup(xbt_dynar_get_as(s_tokens, 1, char *));
- xbt_strbuff_append(clear, (const char*)xbt_dynar_get_as(tokens, cursor2, char *));
- cursor2++;
- xbt_dynar_free(&s_tokens);
- continue;
- }
- addr = (void *) strtoul(xbt_dynar_get_as(s_tokens, 1, char *), NULL, 16);
- if(addr > std_heap && (char *)addr <= (char *)std_heap + STD_HEAP_SIZE){
- cursor2++;
- xbt_dynar_free(&s_tokens);
- continue;
- }
- if(is_stack_ignore_variable(frame_name, xbt_dynar_get_as(s_tokens, 0, char *))){
- cursor2++;
- xbt_dynar_free(&s_tokens);
- continue;
- }
- xbt_strbuff_append(clear, (const char *)xbt_dynar_get_as(tokens, cursor2, char *));
- }
- xbt_dynar_free(&s_tokens);
- cursor2++;
- }
- xbt_dynar_free(&tokens);
- cursor1++;
+ xbt_dynar_foreach(stacks_areas, cursor, current_stack){
+ mc_snapshot_stack_t st = xbt_new(s_mc_snapshot_stack_t, 1);
+ st->local_variables = MC_get_local_variables_values(current_stack->context);
+ st->stack_pointer = MC_get_stack_pointer(current_stack->context, heap);
+ st->real_address = current_stack->address;
+ xbt_dynar_push(res, &st);
+ (*snapshot)->stack_sizes = xbt_realloc((*snapshot)->stack_sizes, (cursor + 1) * sizeof(size_t));
+ (*snapshot)->stack_sizes[cursor] = current_stack->size - ((char *)st->stack_pointer - (char *)((char *)heap + ((char *)current_stack->address - (char *)std_heap)));
}
- xbt_free(frame_name);
-
- xbt_sha(clear->data, snapshot_hash);
-
- xbt_strbuff_free(clear);
+ return res;
}
-
-static xbt_dynar_t take_snapshot_ignore(){
+static xbt_dynar_t MC_take_snapshot_ignore(){
if(mc_heap_comparison_ignore == NULL)
return NULL;
return cpy;
}
+
+static void MC_dump_checkpoint_ignore(mc_snapshot_t snapshot){
+
+ unsigned int cursor = 0;
+ mc_checkpoint_ignore_region_t region;
+ size_t offset;
+
+ xbt_dynar_foreach(mc_checkpoint_ignore, cursor, region){
+ if(region->addr > snapshot->regions[0]->start_addr && (char *)(region->addr) < (char *)snapshot->regions[0]->start_addr + STD_HEAP_SIZE){
+ offset = (char *)region->addr - (char *)snapshot->regions[0]->start_addr;
+ memset((char *)snapshot->regions[0]->data + offset, 0, region->size);
+ }else if(region->addr > snapshot->regions[2]->start_addr && (char *)(region->addr) < (char*)snapshot->regions[2]->start_addr + snapshot->regions[2]->size){
+ offset = (char *)region->addr - (char *)snapshot->regions[2]->start_addr;
+ memset((char *)snapshot->regions[2]->data + offset, 0, region->size);
+ }else if(region->addr > snapshot->regions[1]->start_addr && (char *)(region->addr) < (char*)snapshot->regions[1]->start_addr + snapshot->regions[1]->size){
+ offset = (char *)region->addr - (char *)snapshot->regions[1]->start_addr;
+ memset((char *)snapshot->regions[1]->data + offset, 0, region->size);
+ }
+ }
+
+}
+
+
+mc_snapshot_t MC_take_snapshot(int num_state){
+
+ mc_snapshot_t snapshot = xbt_new0(s_mc_snapshot_t, 1);
+ snapshot->nb_processes = xbt_swag_size(simix_global->process_list);
+
+ /* Save the std heap and the writable mapped pages of libsimgrid and binary */
+ MC_get_memory_regions(snapshot);
+
+ snapshot->to_ignore = MC_take_snapshot_ignore();
+
+ if(_sg_mc_visited > 0 || strcmp(_sg_mc_property_file,"")){
+ snapshot->stacks = MC_take_snapshot_stacks(&snapshot, snapshot->regions[0]->data);
+ //MC_get_hash_global(snapshot->hash_global, snapshot->regions[1]->data, snapshot->regions[2]->data);
+ //MC_get_hash_local(snapshot->hash_local, snapshot->stacks);
+ }
+
+ if(num_state > 0)
+ MC_dump_checkpoint_ignore(snapshot);
+
+ return snapshot;
+
+}
+
+void MC_restore_snapshot(mc_snapshot_t snapshot){
+ unsigned int i;
+ for(i=0; i < NB_REGIONS; i++){
+ MC_region_restore(snapshot->regions[i]);
+ }
+
+}
+
+mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall){
+ return MC_take_snapshot(1);
+}
+
+void *MC_snapshot(void){
+ return simcall_mc_snapshot();
+}
