#include "mc_private.h"
#include <unistd.h>
+#include <sys/wait.h>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_liveness, mc,
"Logging specific to algorithms for liveness properties verification");
}
-int data_program_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- int i;
-
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- fprintf(stderr,"Different byte (offset=%d) (%p - %p) in data program region\n", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
- }
- }
-
- fprintf(stderr, "Hamming distance between data program regions : %d\n", distance);
-
- return distance;
-}
-
-int data_libsimgrid_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- int i;
-
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- fprintf(stderr, "Different byte (offset=%d) (%p - %p) in data libsimgrid region\n", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
- }
- }
-
- fprintf(stderr, "Hamming distance between data libsimgrid regions : %d\n", distance);
+int create_dump(int pair)
+{
+ // Try to enable core dumps
+ struct rlimit core_limit;
+ core_limit.rlim_cur = RLIM_INFINITY;
+ core_limit.rlim_max = RLIM_INFINITY;
- return distance;
-}
-
-int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2){
-
+ if(setrlimit(RLIMIT_CORE, &core_limit) < 0)
+ fprintf(stderr, "setrlimit: %s\nWarning: core dumps may be truncated or non-existant\n", strerror(errno));
- if(s1->num_reg != s2->num_reg){
- XBT_INFO("Different num_reg (s1 = %u, s2 = %u)", s1->num_reg, s2->num_reg);
- return 1;
- }
-
- int i;
- int errors = 0;
-
- for(i=0 ; i< s1->num_reg ; i++){
-
- if(s1->regions[i]->type != s2->regions[i]->type){
- XBT_INFO("Different type of region");
- errors++;
- }
-
- switch(s1->regions[i]->type){
- case 0:
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_INFO("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_INFO("Different start addr of heap (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- errors++;
- }
- if(mmalloc_compare_heap(s1->regions[i]->data, s2->regions[i]->data)){
- XBT_INFO("Different heap (mmalloc_compare)");
- errors++;
- }
- break;
- case 1 :
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_INFO("Different size of libsimgrid (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_INFO("Different start addr of libsimgrid (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_INFO("Different memcmp for data in libsimgrid");
- errors++;
- }
- break;
- case 2 :
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_INFO("Different size of data program (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_INFO("Different start addr of data program (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- errors++;
- }
- if(data_program_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
- XBT_INFO("Different memcmp for data in program");
- errors++;
- }
- break;
- default:
- break;
+ int status;
+ switch(fork()){
+ case 0:
+ // We are the child process -- run the actual program
+ abort();
+ break;
+
+ case -1:
+ // An error occurred, shouldn't happen
+ perror("fork");
+ return -1;
+
+ default:
+ // We are the parent process -- wait for the child process to exit
+ if(wait(&status) < 0)
+ perror("wait");
+ printf("child exited with status %d\n", status);
+ if(WIFSIGNALED(status) && WCOREDUMP(status)){
+ printf("got a core dump\n");
+ char *core_name = malloc(20);
+ sprintf(core_name,"core_%d", pair);
+ rename("core", core_name);
+ free(core_name);
}
}
- return (errors > 0);
-
+ return 0;
}
int reached(xbt_state_t st){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
if(xbt_dynar_is_empty(reached_pairs)){
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 1;
}
/* }
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 0;
}
void set_pair_reached(xbt_state_t st){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
xbt_dynar_push(reached_pairs, &pair);
MC_UNSET_RAW_MEM;
-
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+ create_dump(xbt_dynar_length(reached_pairs));
+
}
int reached_hash(xbt_state_t st){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
if(xbt_dynar_is_empty(reached_pairs_hash)){
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 1;
}else{
XBT_INFO("Different snapshot");
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 0;
}
}
void set_pair_reached_hash(xbt_state_t st){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
MC_free_snapshot(sn);
MC_UNSET_RAW_MEM;
-
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
int visited(xbt_state_t st, int sc){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
if(xbt_dynar_is_empty(visited_pairs)){
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 1;
}else{
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 0;
}
int visited_hash(xbt_state_t st, int sc){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
if(xbt_dynar_is_empty(visited_pairs_hash)){
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 1;
}else{
//XBT_INFO("Different snapshot");
xbt_dynar_reset(prop_ato);
xbt_free(prop_ato);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
return 0;
}
}
void set_pair_visited_hash(xbt_state_t st, int sc){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
MC_UNSET_RAW_MEM;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
void set_pair_visited(xbt_state_t st, int sc){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
MC_UNSET_RAW_MEM;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
}
void MC_ddfs_init(void){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
XBT_INFO("**************************************************");
XBT_INFO("Double-DFS init");
XBT_INFO("**************************************************");
}
}
- }
+ }
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
void MC_ddfs(int search_cycle){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
smx_process_t process;
mc_pair_stateless_t current_pair = NULL;
//xbt_dynar_pop(reached_pairs_hash, NULL);
}
MC_UNSET_RAW_MEM;
-
-
-
-}
-
-
-#ifdef SIMGRID_TEST
-
-XBT_TEST_SUITE("mc_liveness", "Model checking liveness properties");
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(mc_liveness);
-
-XBT_TEST_UNIT("snapshots_comparison", test_compare_snapshot, "Comparison of snapshots")
-{
-
- MC_SET_RAW_MEM;
-
- /* Save first snapshot */
- mc_snapshot_t snapshot1 = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(snapshot1);
-
- /* Save second snapshot */
- mc_snapshot_t snapshot2 = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(snapshot2);
-
- MC_UNSET_RAW_MEM;
-
- xbt_test_assert(snapshot_compare(snapshot1, snapshot2) == 0, "Different consecutive snapshot");
-
-
-}
-
-XBT_TEST_UNIT("snapshots_comparison2", test2_compare_snapshot, "Comparison of snapshots with modification between")
-{
-
- MC_SET_RAW_MEM;
-
- /* Save first snapshot */
- mc_snapshot_t snapshot1 = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(snapshot1);
-
- MC_UNSET_RAW_MEM;
-
- void *test = snapshot1;
- test = (char*)test+1;
- char* t= strdup("toto");
- t=strdup("tat");
-
- MC_SET_RAW_MEM;
-
- /* Save second snapshot */
- mc_snapshot_t snapshot2 = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(snapshot2);
- xbt_test_assert(snapshot_compare(snapshot1, snapshot2) != 0, "Same snapshot with new allocations");
-
- MC_UNSET_RAW_MEM;
-
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
}
-
-#endif
