#include "mc_private.h"
#include "xbt/module.h"
+#include "../simix/smx_private.h"
+
+#include <libunwind.h>
+
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_checkpoint, mc,
"Logging specific to mc_checkpoint");
+void *start_text_libsimgrid;
+void *start_plt, *end_plt;
+char *libsimgrid_path;
+
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_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start_addr, size_t size);
-static int data_program_region_compare(void *d1, void *d2, size_t size);
-static int data_libsimgrid_region_compare(void *d1, void *d2, size_t size);
+static void add_value(xbt_dynar_t *list, const char *type, unsigned long int val);
+static xbt_dynar_t take_snapshot_stacks(void *heap);
+static void get_local_variables_values(xbt_dynar_t *all_variables, stack_region_t stack, void *heap);
+static void print_local_variables_values(xbt_dynar_t all_variables);
static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
{
s_map_region_t reg;
memory_map_t maps = get_memory_map();
int nb_reg = 0;
+ void *heap = NULL;
/* Save the std heap and the writable mapped pages of libsimgrid */
while (i < maps->mapsize && nb_reg < 3) {
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);
+ heap = snapshot->regions[nb_reg]->data;
nb_reg++;
}
} else {
}
}
}
+ }else if ((reg.prot & PROT_READ)){
+ 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);
+ }
+ }
}
i++;
}
+
+ snapshot->stacks = take_snapshot_stacks(heap);
free_memory_map(maps);
xbt_free(snapshot);
}
-static int data_program_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- size_t i = 0;
-
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- XBT_DEBUG("Different byte (offset=%zu) (%p - %p) in data program region", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
- }
- }
-
- XBT_DEBUG("Hamming distance between data program regions : %d", distance);
- return distance;
-}
+void get_plt_section(){
-static int data_libsimgrid_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- size_t i = 0;
- int pointer_align;
- void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
-
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- XBT_DEBUG("Different byte (offset=%zu) (%p - %p) in data libsimgrid region", i, (char *)d1 + i, (char *)d2 + i);
- pointer_align = (i / sizeof(void*)) * sizeof(void*);
- addr_pointed1 = *((void **)((char *)d1 + pointer_align));
- addr_pointed2 = *((void **)((char *)d2 + pointer_align));
- XBT_DEBUG("Addresses pointed : %p - %p", addr_pointed1, addr_pointed2);
- distance++;
- }
- }
-
- XBT_DEBUG("Hamming distance between data libsimgrid regions : %d", distance); fflush(NULL);
-
- return distance;
-}
+ 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 getline */
-int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2){
+ char *lfields[7];
+ int i, plt_not_found = 1;
+ unsigned long int size, offset;
- int errors = 0, i;
-
- if(s1->num_reg != s2->num_reg){
- XBT_DEBUG("Different num_reg (s1 = %u, s2 = %u)", s1->num_reg, s2->num_reg);
- return 1;
- }
+ char *command = bprintf( "objdump --section-headers %s", libsimgrid_path);
- for(i=0 ; i< s1->num_reg ; i++){
-
- if(s1->regions[i]->type != s2->regions[i]->type){
- XBT_INFO("Different type of region");
- errors++;
+ fp = popen(command, "r");
+
+ if(fp == NULL)
+ perror("popen failed");
+
+ while ((read = getline(&line, &n, fp)) != -1 && plt_not_found == 1) {
+
+ 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 || strcmp(lfields[0], "libsimgrid.so:") == 0)
+ continue;
+
+ for (i = 1; i < 7 && lfields[i - 1] != NULL; i++) {
+ lfields[i] = strtok(NULL, " ");
}
-
- switch(s1->regions[i]->type){
- case 0 :
- /* Compare heapregion */
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_DEBUG("Different size of heap (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size);
- errors++;
- }
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){
- XBT_DEBUG("Different start addr of heap (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- errors++;
- }
- if(mmalloc_compare_heap((xbt_mheap_t)s1->regions[i]->data, (xbt_mheap_t)s2->regions[i]->data)){
- XBT_DEBUG("Different heap (mmalloc_compare)");
- errors++;
- }
- break;
- case 1 :
- /* Compare data libsimgrid region */
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_DEBUG("Different size of libsimgrid (data) (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size);
- errors++;
- }
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){
- XBT_DEBUG("Different start addr of libsimgrid (data) (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- errors++;
- }
- if(data_libsimgrid_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
- XBT_DEBUG("Different memcmp for data in libsimgrid");
- errors++;
- }
- break;
-
- case 2 :
- /* Compare data program region */
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_DEBUG("Different size of data program (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size);
- //errors++;
- return 1;
- }
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){
- XBT_DEBUG("Different start addr of data program (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- //errors++;
- return 1;
- }
- if(data_program_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
- XBT_DEBUG("Different memcmp for data in program");
- //errors++;
- return 1;
+
+ if(i>=5){
+ if(strcmp(lfields[1], ".plt") == 0){
+ size = strtoul(lfields[2], NULL, 16);
+ offset = strtoul(lfields[4], NULL, 16);
+ start_plt = (char *)start_text_libsimgrid + offset;
+ end_plt = (char *)start_plt + size;
+ plt_not_found = 0;
}
- break;
-
}
-
+
+
}
+ free(command);
+ free(line);
+ pclose(fp);
- return errors > 0;
-
}
