mc_mem_region_t ref_reg =
mc_model_checker->parent_snapshot ? mc_model_checker->parent_snapshot->privatization_regions[i] : NULL;
snapshot->privatization_regions[i] =
- MC_region_new(-1, mc_binary_info->start_rw, mappings[i], size_data_exe, ref_reg);
+ MC_region_new(-1, mc_binary_info->start_rw, smpi_privatisation_regions[i].address, size_data_exe, ref_reg);
}
snapshot->privatization_index = smpi_loaded_page;
snapshot->regions[2] = NULL;
double smpi_cpu_threshold;
double smpi_running_power;
-static int* fds;
-void** mappings;
int smpi_loaded_page = -1;
char* start_data_exe = NULL;
int size_data_exe = 0;
int smpi_privatize_global_variables;
+smpi_privatisation_region_t smpi_privatisation_regions;
+
typedef struct {
int fd;
int count;
int i;
if(smpi_loaded_page==-1){//initial switch, do the copy from the real page here
for (i=0; i< SIMIX_process_count(); i++){
- memcpy(mappings[i],TOPAGE(start_data_exe),size_data_exe);
+ memcpy(smpi_privatisation_regions[i].address,TOPAGE(start_data_exe),size_data_exe);
}
}
- int current= fds[dest];
+ int current = smpi_privatisation_regions[dest].file_descriptor;
XBT_VERB("Switching data frame to the one of process %d", dest);
void* tmp = mmap (TOPAGE(start_data_exe), size_data_exe, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, current, 0);
if (tmp != TOPAGE(start_data_exe))
return;
}
- fds= (int*)xbt_malloc((smpi_process_count())*sizeof(int));
- mappings= (void**)xbt_malloc((smpi_process_count())*sizeof(void*));
-
+ smpi_privatisation_regions = (smpi_privatisation_region_t) malloc(
+ sizeof(struct s_smpi_privatisation_region) * sizeof(int));
for (i=0; i< SIMIX_process_count(); i++){
//create SIMIX_process_count() mappings of this size with the same data inside
void *address = NULL;
char path[] = "/dev/shm/my-buffer-XXXXXX";
int status;
+
int file_descriptor= mkstemp (path);
if (file_descriptor < 0)
xbt_die("Impossible to create temporary file for memory mapping");
+
status = unlink (path);
if (status)
xbt_die("Impossible to unlink temporary file for memory mapping");
/* Ask for a free region */
address = mmap (NULL, size_data_exe, PROT_READ | PROT_WRITE, MAP_SHARED, file_descriptor, 0);
-
if (address == MAP_FAILED)
xbt_die("Couldn't find a free region for memory mapping");
memcpy(address,TOPAGE(start_data_exe),size_data_exe);
//store the address of the mapping for further switches
- fds[i]=file_descriptor;
- mappings[i]= address;
+ smpi_privatisation_regions[i].file_descriptor = file_descriptor;
+ smpi_privatisation_regions[i].address = address;
}
#endif
#ifdef HAVE_MMAP
int i;
for (i=0; i< smpi_process_count(); i++){
- if(munmap(mappings[i],size_data_exe) < 0) {
- XBT_WARN("Unmapping of fd %d failed: %s", fds[i], strerror(errno));
+ if(munmap(smpi_privatisation_regions[i].address,size_data_exe) < 0) {
+ XBT_WARN("Unmapping of fd %d failed: %s",
+ smpi_privatisation_regions[i].file_descriptor, strerror(errno));
}
- close(fds[i]);
+ close(smpi_privatisation_regions[i].file_descriptor);
}
- xbt_free(mappings);
- xbt_free(fds);
-
+ xbt_free(smpi_privatisation_regions);
#endif
}