+++ /dev/null
-/* Copyright (c) 2008-2014. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "mc_state.h"
-#include "mc_comm_pattern.h"
-#include "mc_request.h"
-#include "mc_safety.h"
-#include "mc_private.h"
-#include "mc_record.h"
-#include "mc_smx.h"
-#include "mc_client.h"
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_comm_determinism, mc,
- "Logging specific to MC communication determinism detection");
-
-/********** Global variables **********/
-
-xbt_dynar_t initial_communications_pattern;
-xbt_dynar_t incomplete_communications_pattern;
-
-/********** Static functions ***********/
-
-static e_mc_comm_pattern_difference_t compare_comm_pattern(mc_comm_pattern_t comm1, mc_comm_pattern_t comm2) {
- if(comm1->type != comm2->type)
- return TYPE_DIFF;
- if (strcmp(comm1->rdv, comm2->rdv) != 0)
- return RDV_DIFF;
- if (comm1->src_proc != comm2->src_proc)
- return SRC_PROC_DIFF;
- if (comm1->dst_proc != comm2->dst_proc)
- return DST_PROC_DIFF;
- if (comm1->tag != comm2->tag)
- return TAG_DIFF;
- if (comm1->data_size != comm2->data_size)
- return DATA_SIZE_DIFF;
- if(comm1->data == NULL && comm2->data == NULL)
- return 0;
- if(comm1->data != NULL && comm2->data !=NULL) {
- if (!memcmp(comm1->data, comm2->data, comm1->data_size))
- return 0;
- return DATA_DIFF;
- }else{
- return DATA_DIFF;
- }
- return 0;
-}
-
-static char* print_determinism_result(e_mc_comm_pattern_difference_t diff, int process, mc_comm_pattern_t comm, unsigned int cursor) {
- char *type, *res;
-
- if(comm->type == SIMIX_COMM_SEND)
- type = bprintf("The send communications pattern of the process %d is different!", process - 1);
- else
- type = bprintf("The recv communications pattern of the process %d is different!", process - 1);
-
- switch(diff) {
- case TYPE_DIFF:
- res = bprintf("%s Different type for communication #%d", type, cursor);
- break;
- case RDV_DIFF:
- res = bprintf("%s Different rdv for communication #%d", type, cursor);
- break;
- case TAG_DIFF:
- res = bprintf("%s Different tag for communication #%d", type, cursor);
- break;
- case SRC_PROC_DIFF:
- res = bprintf("%s Different source for communication #%d", type, cursor);
- break;
- case DST_PROC_DIFF:
- res = bprintf("%s Different destination for communication #%d", type, cursor);
- break;
- case DATA_SIZE_DIFF:
- res = bprintf("%s\n Different data size for communication #%d", type, cursor);
- break;
- case DATA_DIFF:
- res = bprintf("%s\n Different data for communication #%d", type, cursor);
- break;
- default:
- res = NULL;
- break;
- }
-
- return res;
-}
-
-static void update_comm_pattern(mc_comm_pattern_t comm_pattern, smx_synchro_t comm_addr)
-{
- s_smx_synchro_t comm;
- MC_process_read_simple(&mc_model_checker->process,
- &comm, comm_addr, sizeof(comm));
-
- smx_process_t src_proc = MC_smx_resolve_process(comm.comm.src_proc);
- smx_process_t dst_proc = MC_smx_resolve_process(comm.comm.dst_proc);
- comm_pattern->src_proc = src_proc->pid;
- comm_pattern->dst_proc = dst_proc->pid;
- comm_pattern->src_host = MC_smx_process_get_host_name(src_proc);
- comm_pattern->dst_host = MC_smx_process_get_host_name(dst_proc);
- if (comm_pattern->data_size == -1 && comm.comm.src_buff != NULL) {
- size_t buff_size;
- MC_process_read_simple(&mc_model_checker->process,
- &buff_size, comm.comm.dst_buff_size, sizeof(buff_size));
- comm_pattern->data_size = buff_size;
- comm_pattern->data = xbt_malloc0(comm_pattern->data_size);
- MC_process_read_simple(&mc_model_checker->process,
- comm_pattern->data, comm.comm.src_buff, comm_pattern->data_size);
- }
-}
-
-static void deterministic_comm_pattern(int process, mc_comm_pattern_t comm, int backtracking) {
-
- mc_list_comm_pattern_t list =
- xbt_dynar_get_as(initial_communications_pattern, process, mc_list_comm_pattern_t);
-
- if(!backtracking){
- mc_comm_pattern_t initial_comm =
- xbt_dynar_get_as(list->list, list->index_comm, mc_comm_pattern_t);
- e_mc_comm_pattern_difference_t diff =
- compare_comm_pattern(initial_comm, comm);
-
- if (diff != NONE_DIFF) {
- if (comm->type == SIMIX_COMM_SEND){
- initial_global_state->send_deterministic = 0;
- if(initial_global_state->send_diff != NULL)
- xbt_free(initial_global_state->send_diff);
- initial_global_state->send_diff = print_determinism_result(diff, process, comm, list->index_comm + 1);
- }else{
- initial_global_state->recv_deterministic = 0;
- if(initial_global_state->recv_diff != NULL)
- xbt_free(initial_global_state->recv_diff);
- initial_global_state->recv_diff = print_determinism_result(diff, process, comm, list->index_comm + 1);
- }
- if(_sg_mc_send_determinism && !initial_global_state->send_deterministic){
- XBT_INFO("*********************************************************");
- XBT_INFO("***** Non-send-deterministic communications pattern *****");
- XBT_INFO("*********************************************************");
- XBT_INFO("%s", initial_global_state->send_diff);
- xbt_free(initial_global_state->send_diff);
- initial_global_state->send_diff = NULL;
- MC_print_statistics(mc_stats);
- xbt_abort();
- }else if(_sg_mc_comms_determinism && (!initial_global_state->send_deterministic && !initial_global_state->recv_deterministic)) {
- XBT_INFO("****************************************************");
- XBT_INFO("***** Non-deterministic communications pattern *****");
- XBT_INFO("****************************************************");
- XBT_INFO("%s", initial_global_state->send_diff);
- XBT_INFO("%s", initial_global_state->recv_diff);
- xbt_free(initial_global_state->send_diff);
- initial_global_state->send_diff = NULL;
- xbt_free(initial_global_state->recv_diff);
- initial_global_state->recv_diff = NULL;
- MC_print_statistics(mc_stats);
- xbt_abort();
- }
- }
- }
-
- MC_comm_pattern_free(comm);
-
-}
-
-/********** Non Static functions ***********/
-
-void MC_get_comm_pattern(xbt_dynar_t list, smx_simcall_t request, e_mc_call_type_t call_type, int backtracking)
-{
- const smx_process_t issuer = MC_smx_simcall_get_issuer(request);
- mc_list_comm_pattern_t initial_pattern = xbt_dynar_get_as(
- initial_communications_pattern, issuer->pid, mc_list_comm_pattern_t);
- xbt_dynar_t incomplete_pattern = xbt_dynar_get_as(
- incomplete_communications_pattern, issuer->pid, xbt_dynar_t);
-
- mc_comm_pattern_t pattern = xbt_new0(s_mc_comm_pattern_t, 1);
- pattern->data_size = -1;
- pattern->data = NULL;
- pattern->index =
- initial_pattern->index_comm + xbt_dynar_length(incomplete_pattern);
-
- if (call_type == MC_CALL_TYPE_SEND) {
- /* Create comm pattern */
- pattern->type = SIMIX_COMM_SEND;
- pattern->comm_addr = simcall_comm_isend__get__result(request);
-
- s_smx_synchro_t synchro;
- MC_process_read_simple(&mc_model_checker->process,
- &synchro, pattern->comm_addr, sizeof(synchro));
-
- char* remote_name;
- MC_process_read_simple(&mc_model_checker->process, &remote_name,
- synchro.comm.rdv ? &synchro.comm.rdv->name : &synchro.comm.rdv_cpy->name,
- sizeof(remote_name));
- pattern->rdv =
- MC_process_read_string(&mc_model_checker->process, remote_name);
- pattern->src_proc = MC_smx_resolve_process(synchro.comm.src_proc)->pid;
- pattern->src_host = MC_smx_process_get_host_name(issuer);
-
- struct s_smpi_mpi_request mpi_request;
- MC_process_read_simple(&mc_model_checker->process,
- &mpi_request, (MPI_Request) simcall_comm_isend__get__data(request),
- sizeof(mpi_request));
- pattern->tag = mpi_request.tag;
-
- if(synchro.comm.src_buff != NULL){
- pattern->data_size = synchro.comm.src_buff_size;
- pattern->data = xbt_malloc0(pattern->data_size);
- MC_process_read_simple(&mc_model_checker->process,
- pattern->data, synchro.comm.src_buff, pattern->data_size);
- }
- if(mpi_request.detached){
- if (!initial_global_state->initial_communications_pattern_done) {
- /* Store comm pattern */
- xbt_dynar_push(
- xbt_dynar_get_as(
- initial_communications_pattern, pattern->src_proc, mc_list_comm_pattern_t
- )->list,
- &pattern);
- } else {
- /* Evaluate comm determinism */
- deterministic_comm_pattern(pattern->src_proc, pattern, backtracking);
- xbt_dynar_get_as(
- initial_communications_pattern, pattern->src_proc, mc_list_comm_pattern_t
- )->index_comm++;
- }
- return;
- }
- } else if (call_type == MC_CALL_TYPE_RECV) {
- pattern->type = SIMIX_COMM_RECEIVE;
- pattern->comm_addr = simcall_comm_irecv__get__result(request);
-
- struct s_smpi_mpi_request mpi_request;
- MC_process_read_simple(&mc_model_checker->process,
- &mpi_request, (MPI_Request) simcall_comm_irecv__get__data(request),
- sizeof(mpi_request));
- pattern->tag = mpi_request.tag;
-
- s_smx_synchro_t synchro;
- MC_process_read_simple(&mc_model_checker->process,
- &synchro, pattern->comm_addr, sizeof(synchro));
-
- char* remote_name;
- MC_process_read_simple(&mc_model_checker->process, &remote_name,
- synchro.comm.rdv ? &synchro.comm.rdv->name : &synchro.comm.rdv_cpy->name,
- sizeof(remote_name));
- pattern->rdv =
- MC_process_read_string(&mc_model_checker->process, remote_name);
- pattern->dst_proc = MC_smx_resolve_process(synchro.comm.dst_proc)->pid;
- pattern->dst_host = MC_smx_process_get_host_name(issuer);
- } else {
- xbt_die("Unexpected call_type %i", (int) call_type);
- }
-
- xbt_dynar_push(
- xbt_dynar_get_as(incomplete_communications_pattern, issuer->pid, xbt_dynar_t),
- &pattern);
-
- XBT_DEBUG("Insert incomplete comm pattern %p for process %lu", pattern, issuer->pid);
-}
-
-void MC_complete_comm_pattern(xbt_dynar_t list, smx_synchro_t comm_addr, unsigned int issuer, int backtracking) {
- mc_comm_pattern_t current_comm_pattern;
- unsigned int cursor = 0;
- mc_comm_pattern_t comm_pattern;
- int completed = 0;
-
- /* Complete comm pattern */
- xbt_dynar_foreach(xbt_dynar_get_as(incomplete_communications_pattern, issuer, xbt_dynar_t), cursor, current_comm_pattern) {
- if (current_comm_pattern->comm_addr == comm_addr) {
- update_comm_pattern(current_comm_pattern, comm_addr);
- completed = 1;
- xbt_dynar_remove_at(
- xbt_dynar_get_as(incomplete_communications_pattern, issuer, xbt_dynar_t),
- cursor, &comm_pattern);
- XBT_DEBUG("Remove incomplete comm pattern for process %u at cursor %u", issuer, cursor);
- break;
- }
- }
- if(!completed)
- xbt_die("Corresponding communication not found!");
-
- mc_list_comm_pattern_t pattern = xbt_dynar_get_as(
- initial_communications_pattern, issuer, mc_list_comm_pattern_t);
-
- if (!initial_global_state->initial_communications_pattern_done) {
- /* Store comm pattern */
- xbt_dynar_push(pattern->list, &comm_pattern);
- } else {
- /* Evaluate comm determinism */
- deterministic_comm_pattern(issuer, comm_pattern, backtracking);
- pattern->index_comm++;
- }
-}
-
-
-/************************ Main algorithm ************************/
-
-static void MC_modelcheck_comm_determinism_main(void);
-
-static void MC_pre_modelcheck_comm_determinism(void)
-{
- MC_SET_MC_HEAP;
-
- mc_state_t initial_state = NULL;
- smx_process_t process;
- int i;
- const int maxpid = MC_smx_get_maxpid();
-
- if (_sg_mc_visited > 0)
- visited_states = xbt_dynar_new(sizeof(mc_visited_state_t), visited_state_free_voidp);
-
- // Create initial_communications_pattern elements:
- initial_communications_pattern = xbt_dynar_new(sizeof(mc_list_comm_pattern_t), MC_list_comm_pattern_free_voidp);
- for (i=0; i < maxpid; i++){
- mc_list_comm_pattern_t process_list_pattern = xbt_new0(s_mc_list_comm_pattern_t, 1);
- process_list_pattern->list = xbt_dynar_new(sizeof(mc_comm_pattern_t), MC_comm_pattern_free_voidp);
- process_list_pattern->index_comm = 0;
- xbt_dynar_insert_at(initial_communications_pattern, i, &process_list_pattern);
- }
-
- // Create incomplete_communications_pattern elements:
- incomplete_communications_pattern = xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
- for (i=0; i < maxpid; i++){
- xbt_dynar_t process_pattern = xbt_dynar_new(sizeof(mc_comm_pattern_t), NULL);
- xbt_dynar_insert_at(incomplete_communications_pattern, i, &process_pattern);
- }
-
- initial_state = MC_state_new();
- MC_SET_STD_HEAP;
-
- XBT_DEBUG("********* Start communication determinism verification *********");
-
- /* Wait for requests (schedules processes) */
- MC_wait_for_requests();
-
- MC_SET_MC_HEAP;
-
- /* Get an enabled process and insert it in the interleave set of the initial state */
- MC_EACH_SIMIX_PROCESS(process,
- if (MC_process_is_enabled(process)) {
- MC_state_interleave_process(initial_state, process);
- }
- );
-
- xbt_fifo_unshift(mc_stack, initial_state);
-
- MC_SET_STD_HEAP;
-
-}
-
-static void MC_modelcheck_comm_determinism_main(void)
-{
-
- char *req_str = NULL;
- int value;
- mc_visited_state_t visited_state = NULL;
- smx_simcall_t req = NULL;
- smx_process_t process = NULL;
- mc_state_t state = NULL, next_state = NULL;
-
- while (xbt_fifo_size(mc_stack) > 0) {
-
- /* Get current state */
- state = (mc_state_t) xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack));
-
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("Exploration depth = %d (state = %d, interleaved processes = %d)",
- xbt_fifo_size(mc_stack), state->num,
- MC_state_interleave_size(state));
-
- /* Update statistics */
- mc_stats->visited_states++;
-
- if ((xbt_fifo_size(mc_stack) <= _sg_mc_max_depth)
- && (req = MC_state_get_request(state, &value))
- && (visited_state == NULL)) {
-
- req_str = MC_request_to_string(req, value, MC_REQUEST_SIMIX);
- XBT_DEBUG("Execute: %s", req_str);
- xbt_free(req_str);
-
- if (dot_output != NULL) {
- MC_SET_MC_HEAP;
- req_str = MC_request_get_dot_output(req, value);
- MC_SET_STD_HEAP;
- }
-
- MC_state_set_executed_request(state, req, value);
- mc_stats->executed_transitions++;
-
- /* TODO : handle test and testany simcalls */
- e_mc_call_type_t call = MC_CALL_TYPE_NONE;
- if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
- call = MC_get_call_type(req);
- }
-
- /* Answer the request */
- MC_simcall_handle(req, value); /* After this call req is no longer useful */
-
- MC_SET_MC_HEAP;
- if(!initial_global_state->initial_communications_pattern_done)
- MC_handle_comm_pattern(call, req, value, initial_communications_pattern, 0);
- else
- MC_handle_comm_pattern(call, req, value, NULL, 0);
- MC_SET_STD_HEAP;
-
- /* Wait for requests (schedules processes) */
- MC_wait_for_requests();
-
- /* Create the new expanded state */
- MC_SET_MC_HEAP;
-
- next_state = MC_state_new();
-
- if ((visited_state = is_visited_state(next_state)) == NULL) {
-
- /* Get enabled processes and insert them in the interleave set of the next state */
- MC_EACH_SIMIX_PROCESS(process,
- if (MC_process_is_enabled(process)) {
- MC_state_interleave_process(next_state, process);
- }
- );
-
- if (dot_output != NULL)
- fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", state->num, next_state->num, req_str);
-
- } else {
-
- if (dot_output != NULL)
- fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", state->num, visited_state->other_num == -1 ? visited_state->num : visited_state->other_num, req_str);
-
- }
-
- xbt_fifo_unshift(mc_stack, next_state);
-
- if (dot_output != NULL)
- xbt_free(req_str);
-
- MC_SET_STD_HEAP;
-
- } else {
-
- if (xbt_fifo_size(mc_stack) > _sg_mc_max_depth) {
- XBT_WARN("/!\\ Max depth reached ! /!\\ ");
- } else if (visited_state != NULL) {
- XBT_DEBUG("State already visited (equal to state %d), exploration stopped on this path.", visited_state->other_num == -1 ? visited_state->num : visited_state->other_num);
- } else {
- XBT_DEBUG("There are no more processes to interleave. (depth %d)", xbt_fifo_size(mc_stack));
- }
-
- MC_SET_MC_HEAP;
-
- if (!initial_global_state->initial_communications_pattern_done)
- initial_global_state->initial_communications_pattern_done = 1;
-
- /* Trash the current state, no longer needed */
- xbt_fifo_shift(mc_stack);
- MC_state_delete(state, !state->in_visited_states ? 1 : 0);
- XBT_DEBUG("Delete state %d at depth %d", state->num, xbt_fifo_size(mc_stack) + 1);
-
- MC_SET_STD_HEAP;
-
- visited_state = NULL;
-
- /* Check for deadlocks */
- if (MC_deadlock_check()) {
- MC_show_deadlock(NULL);
- return;
- }
-
- MC_SET_MC_HEAP;
-
- while ((state = xbt_fifo_shift(mc_stack)) != NULL) {
- if (MC_state_interleave_size(state) && xbt_fifo_size(mc_stack) < _sg_mc_max_depth) {
- /* We found a back-tracking point, let's loop */
- XBT_DEBUG("Back-tracking to state %d at depth %d", state->num, xbt_fifo_size(mc_stack) + 1);
- xbt_fifo_unshift(mc_stack, state);
- MC_SET_STD_HEAP;
-
- MC_replay(mc_stack);
-
- XBT_DEBUG("Back-tracking to state %d at depth %d done", state->num, xbt_fifo_size(mc_stack));
-
- break;
- } else {
- XBT_DEBUG("Delete state %d at depth %d", state->num, xbt_fifo_size(mc_stack) + 1);
- MC_state_delete(state, !state->in_visited_states ? 1 : 0);
- }
- }
-
- MC_SET_STD_HEAP;
- }
- }
-
- MC_print_statistics(mc_stats);
- MC_SET_STD_HEAP;
-
- exit(0);
-}
-
-void MC_modelcheck_comm_determinism(void)
-{
- if (mc_mode == MC_MODE_CLIENT) {
- // This will move somehwere else:
- MC_client_handle_messages();
- }
-
- xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap);
-
- /* Create exploration stack */
- mc_stack = xbt_fifo_new();
-
- MC_SET_STD_HEAP;
-
- MC_pre_modelcheck_comm_determinism();
-
- MC_SET_MC_HEAP;
- initial_global_state = xbt_new0(s_mc_global_t, 1);
- initial_global_state->snapshot = MC_take_snapshot(0);
- initial_global_state->initial_communications_pattern_done = 0;
- initial_global_state->recv_deterministic = 1;
- initial_global_state->send_deterministic = 1;
- initial_global_state->recv_diff = NULL;
- initial_global_state->send_diff = NULL;
-
- MC_SET_STD_HEAP;
-
- MC_modelcheck_comm_determinism_main();
-
- mmalloc_set_current_heap(heap);
-}
