* under the terms of the license (GNU LGPL) which comes with this package. */
#define _GNU_SOURCE
+#define UNW_LOCAL_ONLY
+
#include <string.h>
#include <link.h>
#include "mc_private.h"
#include "xbt/module.h"
+#include <xbt/mmalloc.h>
+
+#include "xbt/mmalloc/mmprivate.h"
#include "../simix/smx_private.h"
static void MC_snapshot_stack_free(mc_snapshot_stack_t s){
if(s){
xbt_dynar_free(&(s->local_variables));
+ xbt_dynar_free(&(s->stack_frames));
xbt_free(s);
}
}
static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
{
- mc_mem_region_t new_reg = xbt_new0(s_mc_mem_region_t, 1);
+ mc_mem_region_t new_reg = xbt_new(s_mc_mem_region_t, 1);
new_reg->start_addr = start_addr;
new_reg->size = size;
- new_reg->data = xbt_malloc0(size);
+ new_reg->data = xbt_malloc(size);
memcpy(new_reg->data, start_addr, size);
XBT_DEBUG("New region : type : %d, data : %p (real addr %p), size : %zu", type, new_reg->data, start_addr, size);
static void MC_get_memory_regions(mc_snapshot_t snapshot){
+ void* start_heap = ((xbt_mheap_t)std_heap)->base;
+ void* end_heap = ((xbt_mheap_t)std_heap)->breakval;
+ MC_snapshot_add_region(snapshot, 0, start_heap, (char*) end_heap - (char*) start_heap);
+ snapshot->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
+
+
FILE *fp;
char *line = NULL;
ssize_t read;
/* 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)){
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;
}
+/** \brief Fill/llokup the "subtype" field.
+ */
+static void MC_resolve_subtype(mc_object_info_t info, dw_type_t type) {
+
+ if(type->dw_type_id==NULL)
+ return;
+ type->subtype = xbt_dict_get_or_null(info->types, type->dw_type_id);
+ if(type->subtype==NULL)
+ return;
+ if(type->subtype->byte_size != 0)
+ return;
+ if(type->subtype->name==NULL)
+ return;
+ // Try to find a more complete description of the type:
+ // We need to fix in order to support C++.
+
+ dw_type_t subtype = xbt_dict_get_or_null(info->types_by_name, type->subtype->name);
+ if(subtype!=NULL) {
+ type->subtype = subtype;
+ }
+
+ // TODO, support "switch type" (looking up the type in another lib) when possible
+}
+
static void MC_post_process_types(mc_object_info_t info) {
- // Nothing here
+ xbt_dict_cursor_t cursor = NULL;
+ char *origin;
+ dw_type_t type;
+
+ // Lookup "subtype" field:
+ xbt_dict_foreach(info->types, cursor, origin, type){
+ MC_resolve_subtype(info, type);
+
+ dw_type_t member;
+ unsigned int i = 0;
+ if(type->members!=NULL) xbt_dynar_foreach(type->members, i, member) {
+ MC_resolve_subtype(info, member);
+ }
+ }
}
/** \brief Finds informations about a given shared object/executable */
/************************************* Take Snapshot ************************************/
/****************************************************************************************/
-static void MC_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(); */
-
- /* 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 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_dynar_t MC_get_local_variables_values(void *stack_context){
-
- unw_cursor_t c;
- int ret;
-
- char frame_name[256];
-
- ret = unw_init_local(&c, (unw_context_t *)stack_context);
- if(ret < 0){
- XBT_INFO("unw_init_local failed");
- xbt_abort();
- }
-
- unw_word_t ip, sp, off;
- dw_frame_t frame;
-
- unsigned int cursor = 0;
- dw_variable_t current_variable;
- dw_location_entry_t entry = NULL;
- int frame_found = 0, region_type;
- void *frame_pointer_address = NULL;
- long true_ip;
- int stop = 0;
+static xbt_dynar_t MC_get_local_variables_values(xbt_dynar_t stack_frames){
+ unsigned cursor1 = 0;
+ mc_stack_frame_t stack_frame;
xbt_dynar_t variables = xbt_dynar_new(sizeof(local_variable_t), local_variable_free_voidp);
- 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);
-
- if(!strcmp(frame_name, "smx_ctx_sysv_wrapper")) /* Stop before context switch with maestro */
- stop = 1;
-
- if((long)ip > (long) mc_libsimgrid_info->start_exec)
- 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);
+ xbt_dynar_foreach(stack_frames,cursor1,stack_frame) {
- if(frame == NULL){
- ret = unw_step(&c);
- continue;
- }
-
- true_ip = (long)frame->low_pc + (long)off;
- frame_pointer_address = NULL;
-
- /* Get frame pointer */
- switch(frame->frame_base->type){
- case e_dw_loclist:
- 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;
- frame_pointer_address = (void*) MC_dwarf_resolve_location(&c, entry->location, NULL);
- }
- cursor++;
- }
- break;
- default :
- frame_pointer_address = NULL; /* FIXME : implement other cases (with optimizations enabled)*/
- break;
- }
-
- frame_found = 0;
- cursor = 0;
-
- xbt_dynar_foreach(frame->variables, cursor, current_variable){
+ unsigned cursor2 = 0;
+ dw_variable_t current_variable;
+ xbt_dynar_foreach(stack_frame->frame->variables, cursor2, current_variable){
- if((long)ip > (long)mc_libsimgrid_info->start_exec)
+ int region_type;
+ if((long)stack_frame->ip > (long)mc_libsimgrid_info->start_exec)
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->frame = xbt_strdup(stack_frame->frame_name);
+ new_var->ip = stack_frame->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){
- new_var->address = (void*) MC_dwarf_resolve_location(&c, current_variable->address.location, frame_pointer_address);
+ /* if(current_variable->address!=NULL) {
+ new_var->address = current_variable->address;
+ } else */
+ if(current_variable->location != NULL){
+ new_var->address = (void*) MC_dwarf_resolve_location(
+ &(stack_frame->unw_cursor), current_variable->location, (void*)stack_frame->frame_base);
}
xbt_dynar_push(variables, &new_var);
}
-
- ret = unw_step(&c);
-
}
return variables;
}
+static void MC_stack_frame_free_voipd(void *s){
+ mc_stack_frame_t stack_frame = *(mc_stack_frame_t*)s;
+ if(stack_frame) {
+ xbt_free(stack_frame->frame_name);
+ xbt_free(stack_frame);
+ }
+}
-static void *MC_get_stack_pointer(void *stack_context, void *heap){
+static xbt_dynar_t MC_unwind_stack_frames(void *stack_context) {
+ xbt_dynar_t result = xbt_dynar_new(sizeof(mc_stack_frame_t), MC_stack_frame_free_voipd);
unw_cursor_t c;
+
+ char frame_name[256];
+
int ret;
- unw_word_t sp;
+ for(ret = unw_init_local(&c, (unw_context_t *)stack_context); ret >= 0; ret = unw_step(&c)){
+ mc_stack_frame_t stack_frame = xbt_new(s_mc_stack_frame_t, 1);
+ xbt_dynar_push(result, &stack_frame);
+
+ stack_frame->unw_cursor = c;
- ret = unw_init_local(&c, (unw_context_t *)stack_context);
- if(ret < 0){
+ unw_get_reg(&c, UNW_REG_IP, &stack_frame->ip);
+ unw_get_reg(&c, UNW_REG_SP, &stack_frame->sp);
+
+ unw_word_t off;
+ unw_get_proc_name(&c, frame_name, sizeof (frame_name), &off);
+ stack_frame->frame_name = xbt_strdup(frame_name);
+
+ dw_frame_t frame;
+ if((long)stack_frame->ip > (long) mc_libsimgrid_info->start_exec)
+ 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);
+ stack_frame->frame = frame;
+
+ if(frame != NULL){
+ unw_word_t normalized_ip = (unw_word_t)frame->low_pc + (unw_word_t)off;
+ stack_frame->frame_base = (unw_word_t)mc_find_frame_base(normalized_ip, frame, &c);
+ } else {
+ stack_frame->frame_base = 0;
+ }
+
+ /* Stop before context switch with maestro */
+ if(!strcmp(frame_name, "smx_ctx_sysv_wrapper"))
+ break;
+ }
+
+ if(xbt_dynar_length(result) == 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)));
-
-}
+ return result;
+};
static xbt_dynar_t MC_take_snapshot_stacks(mc_snapshot_t *snapshot, void *heap){
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->stack_frames = MC_unwind_stack_frames(current_stack->context);
+ st->local_variables = MC_get_local_variables_values(st->stack_frames);
+
+ unw_word_t sp = xbt_dynar_get_as(st->stack_frames, 0, mc_stack_frame_t)->sp;
+ st->stack_pointer = ((char *)heap + (size_t)(((char *)((long)sp) - (char*)std_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));
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(_sg_mc_hash && snapshot->stacks!=NULL) {
+ snapshot->hash = mc_hash_processes_state(num_state, snapshot->stacks);
+ } else {
+ snapshot->hash = 0;
+ }
+ }
+ else {
+ snapshot->hash = 0;
}
if(num_state > 0)
