/* 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 <assert.h>
+
#include "../simix/smx_private.h"
#include "xbt/fifo.h"
#include "mc_state.h"
#include "mc_request.h"
#include "mc_private.h"
+#include "mc_comm_pattern.h"
+#include "mc_smx.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc,
+ "Logging specific to MC (state)");
/**
* \brief Creates a state data structure used by the exploration algorithm
*/
mc_state_t MC_state_new()
{
- mc_state_t state = NULL;
+ mc_state_t state = xbt_new0(s_mc_state_t, 1);
- state = xbt_new0(s_mc_state_t, 1);
- state->max_pid = simix_process_maxpid;
+ state->max_pid = MC_smx_get_maxpid();
state->proc_status = xbt_new0(s_mc_procstate_t, state->max_pid);
state->system_state = NULL;
state->num = ++mc_stats->expanded_states;
-
+ state->in_visited_states = 0;
+ state->incomplete_comm_pattern = NULL;
+ /* Stateful model checking */
+ if((_sg_mc_checkpoint > 0 && (mc_stats->expanded_states % _sg_mc_checkpoint == 0)) || _sg_mc_termination){
+ state->system_state = MC_take_snapshot(state->num);
+ if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
+ MC_state_copy_incomplete_communications_pattern(state);
+ MC_state_copy_index_communications_pattern(state);
+ }
+ }
return state;
}
* \brief Deletes a state data structure
* \param trans The state to be deleted
*/
-void MC_state_delete(mc_state_t state)
-{
- if (state->system_state)
+void MC_state_delete(mc_state_t state, int free_snapshot){
+ if (state->system_state && free_snapshot){
MC_free_snapshot(state->system_state);
+ }
+ if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
+ xbt_free(state->index_comm);
+ xbt_free(state->incomplete_comm_pattern);
+ }
xbt_free(state->proc_status);
xbt_free(state);
}
void MC_state_interleave_process(mc_state_t state, smx_process_t process)
{
+ assert(state);
state->proc_status[process->pid].state = MC_INTERLEAVE;
state->proc_status[process->pid].interleave_count = 0;
}
{
state->executed_req = *req;
state->req_num = value;
+
smx_process_t process = NULL;
- mc_procstate_t procstate = NULL;
/* The waitany and testany request are transformed into a wait or test request over the
* corresponding communication action so it can be treated later by the dependence
case SIMCALL_COMM_WAITANY:
state->internal_req.call = SIMCALL_COMM_WAIT;
state->internal_req.issuer = req->issuer;
- state->internal_comm =
- *xbt_dynar_get_as(simcall_comm_waitany__get__comms(req), value,
- smx_synchro_t);
+ MC_process_read_dynar_element(&mc_model_checker->process,
+ &state->internal_comm, simcall_comm_waitany__get__comms(req),
+ value, sizeof(state->internal_comm));
simcall_comm_wait__set__comm(&state->internal_req, &state->internal_comm);
simcall_comm_wait__set__timeout(&state->internal_req, 0);
break;
state->internal_req.issuer = req->issuer;
if (value > 0)
- state->internal_comm =
- *xbt_dynar_get_as(simcall_comm_testany__get__comms(req), value,
- smx_synchro_t);
+ MC_process_read_dynar_element(&mc_model_checker->process,
+ &state->internal_comm, simcall_comm_testany__get__comms(req),
+ value, sizeof(state->internal_comm));
simcall_comm_test__set__comm(&state->internal_req, &state->internal_comm);
simcall_comm_test__set__result(&state->internal_req, value);
case SIMCALL_COMM_WAIT:
state->internal_req = *req;
- state->internal_comm = *(simcall_comm_wait__get__comm(req));
+ MC_process_read_simple(&mc_model_checker->process, &state->internal_comm ,
+ simcall_comm_wait__get__comm(req), sizeof(state->internal_comm));
simcall_comm_wait__set__comm(&state->executed_req, &state->internal_comm);
simcall_comm_wait__set__comm(&state->internal_req, &state->internal_comm);
break;
case SIMCALL_COMM_TEST:
state->internal_req = *req;
- state->internal_comm = *simcall_comm_test__get__comm(req);
+ MC_process_read_simple(&mc_model_checker->process, &state->internal_comm,
+ simcall_comm_test__get__comm(req), sizeof(state->internal_comm));
simcall_comm_test__set__comm(&state->executed_req, &state->internal_comm);
simcall_comm_test__set__comm(&state->internal_req, &state->internal_comm);
break;
case SIMCALL_MC_RANDOM:
state->internal_req = *req;
- if (value != simcall_mc_random__get__max(req)) {
- xbt_swag_foreach(process, simix_global->process_list) {
- procstate = &state->proc_status[process->pid];
- if (process->pid == req->issuer->pid) {
+ int random_max = simcall_mc_random__get__max(req);
+ if (value != random_max) {
+ MC_EACH_SIMIX_PROCESS(process,
+ mc_procstate_t procstate = &state->proc_status[process->pid];
+ const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
+ if (process->pid == issuer->pid) {
procstate->state = MC_MORE_INTERLEAVE;
break;
}
- }
+ );
}
break;
return &state->internal_req;
}
-smx_simcall_t MC_state_get_request(mc_state_t state, int *value)
+static inline smx_simcall_t MC_state_get_request_for_process(
+ mc_state_t state, int*value, smx_process_t process)
{
- smx_process_t process = NULL;
- mc_procstate_t procstate = NULL;
- unsigned int start_count;
- smx_synchro_t act = NULL;
-
- xbt_swag_foreach(process, simix_global->process_list) {
- procstate = &state->proc_status[process->pid];
-
- if (procstate->state == MC_INTERLEAVE
- || procstate->state == MC_MORE_INTERLEAVE) {
- if (MC_process_is_enabled(process)) {
- switch (process->simcall.call) {
- case SIMCALL_COMM_WAITANY:
- *value = -1;
- while (procstate->interleave_count <
- xbt_dynar_length(simcall_comm_waitany__get__comms
- (&process->simcall))) {
- if (MC_request_is_enabled_by_idx
- (&process->simcall, procstate->interleave_count++)) {
- *value = procstate->interleave_count - 1;
- break;
- }
+ mc_procstate_t procstate = &state->proc_status[process->pid];
+
+ if (procstate->state != MC_INTERLEAVE
+ && procstate->state != MC_MORE_INTERLEAVE)
+ return NULL;
+ if (!MC_process_is_enabled(process))
+ return NULL;
+
+ switch (process->simcall.call) {
+
+ case SIMCALL_COMM_WAITANY:
+ *value = -1;
+ while (procstate->interleave_count <
+ MC_process_read_dynar_length(&mc_model_checker->process,
+ simcall_comm_waitany__get__comms(&process->simcall))) {
+ if (MC_request_is_enabled_by_idx
+ (&process->simcall, procstate->interleave_count++)) {
+ *value = procstate->interleave_count - 1;
+ break;
}
+ }
- if (procstate->interleave_count >=
- xbt_dynar_length(simcall_comm_waitany__get__comms
- (&process->simcall)))
- procstate->state = MC_DONE;
-
- if (*value != -1)
- return &process->simcall;
+ if (procstate->interleave_count >=
+ MC_process_read_dynar_length(&mc_model_checker->process,
+ simcall_comm_waitany__get__comms(&process->simcall)))
+ procstate->state = MC_DONE;
- break;
+ if (*value != -1)
+ return &process->simcall;
- case SIMCALL_COMM_TESTANY:
- start_count = procstate->interleave_count;
- *value = -1;
- while (procstate->interleave_count <
- xbt_dynar_length(simcall_comm_testany__get__comms
- (&process->simcall))) {
- if (MC_request_is_enabled_by_idx
- (&process->simcall, procstate->interleave_count++)) {
- *value = procstate->interleave_count - 1;
- break;
- }
+ break;
+
+ case SIMCALL_COMM_TESTANY: {
+ unsigned start_count = procstate->interleave_count;
+ *value = -1;
+ while (procstate->interleave_count <
+ MC_process_read_dynar_length(&mc_model_checker->process,
+ simcall_comm_testany__get__comms(&process->simcall))) {
+ if (MC_request_is_enabled_by_idx
+ (&process->simcall, procstate->interleave_count++)) {
+ *value = procstate->interleave_count - 1;
+ break;
}
+ }
- if (procstate->interleave_count >=
- xbt_dynar_length(simcall_comm_testany__get__comms
- (&process->simcall)))
- procstate->state = MC_DONE;
-
- if (*value != -1 || start_count == 0)
- return &process->simcall;
-
- break;
-
- case SIMCALL_COMM_WAIT:
- act = simcall_comm_wait__get__comm(&process->simcall);
- if (act->comm.src_proc && act->comm.dst_proc) {
- *value = 0;
- } else {
- if (act->comm.src_proc == NULL && act->comm.type == SIMIX_COMM_READY
- && act->comm.detached == 1)
- *value = 0;
- else
- *value = -1;
- }
+ if (procstate->interleave_count >=
+ MC_process_read_dynar_length(&mc_model_checker->process,
+ simcall_comm_testany__get__comms(&process->simcall)))
procstate->state = MC_DONE;
- return &process->simcall;
-
- break;
- case SIMCALL_MC_RANDOM:
- if (procstate->state == MC_INTERLEAVE)
- *value = 0;
- else {
- if (state->req_num < simcall_mc_random__get__max(&process->simcall))
- *value = state->req_num + 1;
- }
- procstate->state = MC_DONE;
+ if (*value != -1 || start_count == 0)
return &process->simcall;
- break;
- default:
- procstate->state = MC_DONE;
+ break;
+ }
+
+ case SIMCALL_COMM_WAIT: {
+ smx_synchro_t remote_act = simcall_comm_wait__get__comm(&process->simcall);
+ s_smx_synchro_t act;
+ MC_process_read_simple(&mc_model_checker->process,
+ &act, remote_act, sizeof(act));
+ if (act.comm.src_proc && act.comm.dst_proc) {
*value = 0;
- return &process->simcall;
- break;
+ } else {
+ if (act.comm.src_proc == NULL && act.comm.type == SIMIX_COMM_READY
+ && act.comm.detached == 1)
+ *value = 0;
+ else
+ *value = -1;
}
+ procstate->state = MC_DONE;
+ return &process->simcall;
}
- }
+
+ case SIMCALL_MC_RANDOM:
+ if (procstate->state == MC_INTERLEAVE)
+ *value = simcall_mc_random__get__min(&process->simcall);
+ else {
+ if (state->req_num < simcall_mc_random__get__max(&process->simcall))
+ *value = state->req_num + 1;
+ }
+ procstate->state = MC_DONE;
+ return &process->simcall;
+
+ default:
+ procstate->state = MC_DONE;
+ *value = 0;
+ return &process->simcall;
}
+ return NULL;
+}
+
+smx_simcall_t MC_state_get_request(mc_state_t state, int *value)
+{
+ smx_process_t process = NULL;
+ MC_EACH_SIMIX_PROCESS(process,
+ smx_simcall_t res = MC_state_get_request_for_process(state, value, process);
+ if (res)
+ return res;
+ );
return NULL;
}
