+/* Copyright (c) 2013-2015. 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. */
+
/***************** Centralized Mutual Exclusion Algorithm *********************/
/* This example implements a centralized mutual exclusion algorithm. */
/* Bug : CS requests of process 1 not satisfied */
/* LTL property checked : G(r->F(cs)); (r=request of CS, cs=CS ok) */
/******************************************************************************/
+/* Run :
+ /usr/bin/time -f "clock:%e user:%U sys:%S swapped:%W exitval:%x max:%Mk" "$@" ../../../smpi_script/bin/smpirun -hostfile hostfile_bugged1_liveness -platform ../../platforms/cluster.xml --cfg=model-check:1 --cfg=contexts/factory:ucontext --cfg=model-check/reduction:none --cfg=model-check/property:promela_bugged1_liveness --cfg=smpi/send_is_detached_thres:0 --cfg=contexts/stack_size:128 --cfg=model-check/visited:100000 --cfg=model-check/max_depth:100000 ./bugged1_liveness */
+
#include <stdio.h>
#include <mpi.h>
#include <simgrid/modelchecker.h>
int r, cs;
-static int predR(){
- return r;
-}
-
-static int predCS(){
- return cs;
-}
-
-
int main(int argc, char **argv){
int err, size, rank;
exit(1);
}
- MC_automaton_new_propositional_symbol("r", &predR);
- MC_automaton_new_propositional_symbol("cs", &predCS);
+ MC_automaton_new_propositional_symbol_pointer("r", &r);
+ MC_automaton_new_propositional_symbol_pointer("cs", &cs);
MC_ignore(&(status.count), sizeof(status.count));
/* Get number of processes */
- err = MPI_Comm_size(MPI_COMM_WORLD, &size);
+ MPI_Comm_size(MPI_COMM_WORLD, &size);
/* Get id of this process */
- err = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+ MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if(rank == 0){ /* Coordinator */
while(1){
printf("CS already used.\n");
xbt_dynar_push(requests, &recv_buff);
}else{
- if(recv_buff != 1){
+ if(recv_buff != size - 1){
printf("CS idle. Grant immediatly.\n");
MPI_Send(&rank, 1, MPI_INT, recv_buff, GRANT_TAG, MPI_COMM_WORLD);
CS_used = 1;
if(!xbt_dynar_is_empty(requests)){
printf("CS release. Grant to queued requests (queue size: %lu)", xbt_dynar_length(requests));
xbt_dynar_shift(requests, &recv_buff);
- if(recv_buff != 1){
+ if(recv_buff != size - 1){
MPI_Send(&rank, 1, MPI_INT, recv_buff, GRANT_TAG, MPI_COMM_WORLD);
CS_used = 1;
}else{
while(1){
printf("%d asks the request.\n", rank);
MPI_Send(&rank, 1, MPI_INT, 0, REQUEST_TAG, MPI_COMM_WORLD);
- if(rank == 1){
+ if(rank == size - 1){
r = 1;
cs = 0;
}
MPI_Recv(&recv_buff, 1, MPI_INT, 0, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
- if(status.MPI_TAG == GRANT_TAG && rank == 1){
+ if(status.MPI_TAG == GRANT_TAG && rank == size - 1){
cs = 1;
r = 0;
}
printf("%d got the answer. Release it.\n", rank);
MPI_Send(&rank, 1, MPI_INT, 0, RELEASE_TAG, MPI_COMM_WORLD);
- if(rank == 1){
+ if(rank == size - 1){
r = 0;
cs = 0;
}