static mc_mem_region_t mc_region_new_dense(
mc_region_type_t region_type,
- void *start_addr, void* permanent_addr, size_t size, mc_mem_region_t ref_reg)
+ void *start_addr, void* permanent_addr, size_t size)
{
mc_mem_region_t region = xbt_new(s_mc_mem_region_t, 1);
region->region_type = region_type;
region->permanent_addr = permanent_addr;
region->size = size;
region->flat.data = xbt_malloc(size);
- MC_process_read(&mc_model_checker->process, MC_ADDRESS_SPACE_READ_FLAGS_NONE,
+ MC_process_read(&mc_model_checker->process(), MC_ADDRESS_SPACE_READ_FLAGS_NONE,
region->flat.data, permanent_addr, size,
MC_PROCESS_INDEX_DISABLED);
XBT_DEBUG("New region : type : %d, data : %p (real addr %p), size : %zu",
* @param start_addr Address of the region in the simulated process
* @param permanent_addr Permanent address of this data (for privatized variables, this is the virtual address of the privatized mapping)
* @param size Size of the data*
- * @param ref_reg Reference corresponding region
*/
-static mc_mem_region_t MC_region_new(mc_region_type_t type, void *start_addr, void* permanent_addr, size_t size, mc_mem_region_t ref_reg)
+static mc_mem_region_t MC_region_new(
+ mc_region_type_t type, void *start_addr, void* permanent_addr, size_t size)
{
if (_sg_mc_sparse_checkpoint) {
- return mc_region_new_sparse(type, start_addr, permanent_addr, size, ref_reg);
+ return mc_region_new_sparse(type, start_addr, permanent_addr, size);
} else {
- return mc_region_new_dense(type, start_addr, permanent_addr, size, ref_reg);
+ return mc_region_new_dense(type, start_addr, permanent_addr, size);
}
}
/** @brief Restore a region from a snapshot
- *
- * If we are using per page snapshots, it is possible to use the reference
- * region in order to do an incremental restoration of the region: the
- * softclean pages which are shared between the two snapshots do not need
- * to be restored.
*
* @param reg Target region
- * @param reg_reg Current region (if not NULL), used for lazy per page restoration
*/
-static void MC_region_restore(mc_mem_region_t region, mc_mem_region_t ref_region)
+static void MC_region_restore(mc_mem_region_t region)
{
switch(region->storage_type) {
case MC_REGION_STORAGE_TYPE_NONE:
break;
case MC_REGION_STORAGE_TYPE_FLAT:
- MC_process_write(&mc_model_checker->process, region->flat.data,
+ MC_process_write(&mc_model_checker->process(), region->flat.data,
region->permanent_addr, region->size);
break;
case MC_REGION_STORAGE_TYPE_CHUNKED:
- mc_region_restore_sparse(&mc_model_checker->process, region, ref_region);
+ mc_region_restore_sparse(&mc_model_checker->process(), region);
break;
case MC_REGION_STORAGE_TYPE_PRIVATIZED:
{
- bool has_ref_regions = ref_region &&
- ref_region->storage_type == MC_REGION_STORAGE_TYPE_PRIVATIZED;
size_t process_count = region->privatized.regions_count;
for (size_t i = 0; i < process_count; i++) {
- MC_region_restore(region->privatized.regions[i],
- has_ref_regions ? ref_region->privatized.regions[i] : NULL);
+ MC_region_restore(region->privatized.regions[i]);
}
break;
}
}
static mc_mem_region_t MC_region_new_privatized(
- mc_region_type_t region_type, void *start_addr, void* permanent_addr, size_t size,
- mc_mem_region_t ref_reg)
+ mc_region_type_t region_type, void *start_addr, void* permanent_addr, size_t size
+ )
{
size_t process_count = MC_smpi_process_count();
mc_mem_region_t region = xbt_new(s_mc_mem_region_t, 1);
// Read smpi_privatisation_regions from MCed:
smpi_privatisation_region_t remote_smpi_privatisation_regions;
- MC_process_read_variable(&mc_model_checker->process,
+ MC_process_read_variable(&mc_model_checker->process(),
"smpi_privatisation_regions",
&remote_smpi_privatisation_regions, sizeof(remote_smpi_privatisation_regions));
s_smpi_privatisation_region_t privatisation_regions[process_count];
- MC_process_read_simple(&mc_model_checker->process, &privatisation_regions,
+ MC_process_read_simple(&mc_model_checker->process(), &privatisation_regions,
remote_smpi_privatisation_regions, sizeof(privatisation_regions));
for (size_t i = 0; i < process_count; i++) {
- mc_mem_region_t ref_subreg = NULL;
- if (ref_reg && ref_reg->storage_type == MC_REGION_STORAGE_TYPE_PRIVATIZED)
- ref_subreg = ref_reg->privatized.regions[i];
region->privatized.regions[i] =
MC_region_new(region_type, start_addr,
- privatisation_regions[i].address, size,
- ref_subreg);
+ privatisation_regions[i].address, size);
}
return region;
else if (type == MC_REGION_TYPE_HEAP)
xbt_assert(!object_info, "Unexpected object info for heap region.");
- mc_mem_region_t ref_reg = NULL;
- if (mc_model_checker->parent_snapshot)
- ref_reg = mc_model_checker->parent_snapshot->snapshot_regions[index];
-
mc_mem_region_t region;
const bool privatization_aware = MC_object_info_is_privatized(object_info);
if (privatization_aware && MC_smpi_process_count())
- region = MC_region_new_privatized(type, start_addr, permanent_addr, size, ref_reg);
+ region = MC_region_new_privatized(type, start_addr, permanent_addr, size);
else
- region = MC_region_new(type, start_addr, permanent_addr, size, ref_reg);
+ region = MC_region_new(type, start_addr, permanent_addr, size);
region->object_info = object_info;
snapshot->snapshot_regions[index] = region;
#ifdef HAVE_SMPI
if (smpi_privatize_global_variables && MC_smpi_process_count()) {
// snapshot->privatization_index = smpi_loaded_page
- MC_process_read_variable(&mc_model_checker->process,
+ MC_process_read_variable(&mc_model_checker->process(),
"smpi_loaded_page", &snapshot->privatization_index,
sizeof(snapshot->privatization_index));
} else
static void mc_fill_local_variables_values(mc_stack_frame_t stack_frame,
dw_frame_t scope, int process_index, xbt_dynar_t result)
{
- mc_process_t process = &mc_model_checker->process;
+ mc_process_t process = &mc_model_checker->process();
void *ip = (void *) stack_frame->ip;
if (ip < scope->low_pc || ip >= scope->high_pc)
current_variable->object_info,
&(stack_frame->unw_cursor),
(void *) stack_frame->frame_base,
- (mc_address_space_t) &mc_model_checker->process, process_index);
+ (mc_address_space_t) &mc_model_checker->process(), process_index);
switch(mc_get_location_type(&location)) {
case MC_LOCATION_TYPE_ADDRESS:
static xbt_dynar_t MC_unwind_stack_frames(mc_unw_context_t stack_context)
{
- mc_process_t process = &mc_model_checker->process;
+ mc_process_t process = &mc_model_checker->process();
xbt_dynar_t result =
xbt_dynar_new(sizeof(mc_stack_frame_t), MC_stack_frame_free_voipd);
// Read the context from remote process:
unw_context_t context;
- MC_process_read_simple(&mc_model_checker->process,
+ MC_process_read_simple(&mc_model_checker->process(),
&context, (unw_context_t*) current_stack->context, sizeof(context));
st->context = xbt_new0(s_mc_unw_context_t, 1);
- if (mc_unw_init_context(st->context, &mc_model_checker->process,
+ if (mc_unw_init_context(st->context, &mc_model_checker->process(),
&context) < 0) {
xbt_die("Could not initialise the libunwind context.");
}
// Copy the memory:
unsigned int cursor = 0;
mc_checkpoint_ignore_region_t region;
- xbt_dynar_foreach (mc_model_checker->process.checkpoint_ignore, cursor, region) {
+ xbt_dynar_foreach (mc_model_checker->process().checkpoint_ignore, cursor, region) {
s_mc_snapshot_ignored_data_t ignored_data;
ignored_data.start = region->addr;
ignored_data.size = region->size;
}
// Zero the memory:
- xbt_dynar_foreach (mc_model_checker->process.checkpoint_ignore, cursor, region) {
+ xbt_dynar_foreach (mc_model_checker->process().checkpoint_ignore, cursor, region) {
MC_process_clear_memory(snapshot->process, region->addr, region->size);
}
}
}
-/** @brief Can we remove this snapshot?
- *
- * Some snapshots cannot be removed (yet) because we need them
- * at this point.
- *
- * @param snapshot
- */
-int mc_important_snapshot(mc_snapshot_t snapshot)
-{
- // We need this snapshot in order to know which
- // pages needs to be stored in the next snapshot.
- // This field is only non-NULL when using soft-dirty
- // page tracking.
- if (snapshot == mc_model_checker->parent_snapshot)
- return true;
-
- return false;
-}
-
static void MC_get_current_fd(mc_snapshot_t snapshot)
{
{
XBT_DEBUG("Taking snapshot %i", num_state);
- mc_process_t mc_process = &mc_model_checker->process;
+ mc_process_t mc_process = &mc_model_checker->process();
mc_snapshot_t snapshot = xbt_new0(s_mc_snapshot_t, 1);
snapshot->process = mc_process;
snapshot->num_state = num_state;
if (_sg_mc_snapshot_fds)
MC_get_current_fd(snapshot);
- const bool use_soft_dirty = _sg_mc_sparse_checkpoint
- && _sg_mc_soft_dirty
- && MC_process_is_self(mc_process);
-
/* Save the std heap and the writable mapped pages of libsimgrid and binary */
MC_get_memory_regions(mc_process, snapshot);
- if (use_soft_dirty)
- mc_softdirty_reset();
snapshot->to_ignore = MC_take_snapshot_ignore();
}
MC_snapshot_ignore_restore(snapshot);
- if (use_soft_dirty)
- mc_model_checker->parent_snapshot = snapshot;
return snapshot;
}
static inline
void MC_restore_snapshot_regions(mc_snapshot_t snapshot)
{
- mc_snapshot_t parent_snapshot = mc_model_checker->parent_snapshot;
-
const size_t n = snapshot->snapshot_regions_count;
for (size_t i = 0; i < n; i++) {
// For privatized, variables we decided it was not necessary to take the snapshot:
if (snapshot->snapshot_regions[i])
- MC_region_restore(snapshot->snapshot_regions[i],
- parent_snapshot ? parent_snapshot->snapshot_regions[i] : NULL);
+ MC_region_restore(snapshot->snapshot_regions[i]);
}
#ifdef HAVE_SMPI
void MC_restore_snapshot(mc_snapshot_t snapshot)
{
XBT_DEBUG("Restore snapshot %i", snapshot->num_state);
-
- const bool use_soft_dirty = _sg_mc_sparse_checkpoint
- && _sg_mc_soft_dirty
- && MC_process_is_self(&mc_model_checker->process);
-
MC_restore_snapshot_regions(snapshot);
if (_sg_mc_snapshot_fds)
MC_restore_snapshot_fds(snapshot);
- if (use_soft_dirty) {
- mc_softdirty_reset();
- }
MC_snapshot_ignore_restore(snapshot);
- if (use_soft_dirty) {
- mc_model_checker->parent_snapshot = snapshot;
- }
-
- mc_model_checker->process.cache_flags = 0;
+ mc_model_checker->process().cache_flags = 0;
}
mc_snapshot_t simcall_HANDLER_mc_snapshot(smx_simcall_t simcall)
