stasis-aries-wal/test/dfa/ping_pong_dfa.c

/*---
This software is copyrighted by the Regents of the University of
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associated with the software unless explicitly disclaimed in
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each file where they apply.
                                                                                                                                  
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POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                  
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
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the software and related documentation as defined in the Federal
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---*/
#include "../../libdfa/libdfa.h"
#include <stdio.h>
#include <malloc.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
callback_fcn recv_ping, recv_pong;

#define PING1 3
#define PING2 4
#define PONG1 1
#define PONG2 2
int main (int argc, char** argv) {
  DfaSet * dfaSet = calloc(1, sizeof(DfaSet));
  /*  callback_fcn* callbacks[MAX_MESSAGE_COUNT]; */
      
  Transition * transitions = malloc (sizeof(Transition) * 4);

  State * states = malloc(sizeof(State) * MAX_STATE_COUNT);
  StateMachine * initial_sm1;
  StateMachine * initial_sm2;
  int i;

  /*dfaSet->monoTree.buffer = calloc(DFA_MACHINE_COUNT, sizeof(StateMachine)); */
  dfa_initialize_new (dfaSet, 10000, DFA_MACHINE_COUNT);
  for(i = 0; i < DFA_MACHINE_COUNT/4; i++) {
    /*    StateMachine initial_sm1_stack;
	  StateMachine initial_sm2_stack;*/
    
    /*    initial_sm1 = allocMachine(&(dfaSet->monoTree));
	  initial_sm2 = allocMachine(&(dfaSet->monoTree)); */

    initial_sm1 = allocSmash(dfaSet->smash);
    initial_sm2 = allocSmash(dfaSet->smash);

    
    initial_sm1->message.from_machine_id = initial_sm1->machine_id;
    initial_sm1->message.to_machine_id = initial_sm2->machine_id;
    initial_sm2->message.from_machine_id = initial_sm2->machine_id;
    initial_sm2->message.to_machine_id = initial_sm1->machine_id;
    
    printf("sm1 %ld, sm2 %ld\n", initial_sm1->machine_id, initial_sm2->machine_id);
    
    initial_sm1->current_state = PING1;
    initial_sm2->current_state = PONG1;
    
    initial_sm1->last_transition = (time_t)0;
    initial_sm2->last_transition = (time_t)0;
    
    strcpy(initial_sm1->message_recipient, "127.0.0.1:10000");
    strcpy(initial_sm2->message_recipient, "127.0.0.1:10000");
  }

  states[0].name      = PING1;
  states[0].retry_fcn = NULL;
  states[0].abort_fcn = NULL;
  
  states[1].name      = PING2;
  states[1].retry_fcn = NULL;
  states[1].abort_fcn = NULL;
  
  states[2].name      = PONG1;
  states[2].retry_fcn = NULL;
  states[2].abort_fcn = NULL;
  
  states[3].name      = PONG2;
  states[3].retry_fcn = NULL;
  states[3].abort_fcn = NULL;
  
  transitions[0].remote_state   = PONG1;
  transitions[0].pre_state = PING1;
  transitions[0].post_state= PING2;
  transitions[0].fcn_ptr   = &recv_ping;
  transitions[0].force     = 1;
  
  transitions[1].remote_state   = PONG2;
  transitions[1].pre_state = PING2;
  transitions[1].post_state= PING1;
  transitions[1].fcn_ptr   = &recv_ping;
  transitions[1].force     = 1;

  transitions[2].remote_state   = PING1;
  transitions[2].pre_state = PONG2;
  transitions[2].post_state= PONG1;
  transitions[2].fcn_ptr   = &recv_pong;
  transitions[2].force     = 1;

  transitions[3].remote_state   = PING2;
  transitions[3].pre_state = PONG1;
  transitions[3].post_state= PONG2;
  transitions[3].fcn_ptr   = &recv_pong;
  transitions[3].force     = 1;

  if(dfa_reinitialize(dfaSet, "127.0.0.1:10000", transitions, 4, states, 4) < 0) {
    printf("Error.  Exiting.\n");
  }

  main_loop(dfaSet);
  /* Can't get here. */
  return 0;
}

state_name recv_ping(void * dfaSet, StateMachine * stateMachine, Message * m, char * from) {
  if(stateMachine != NULL) {
    printf("%ld(%d): Got a ping from %s Machine %ld\n", stateMachine->machine_id, stateMachine->current_state, from, m->from_machine_id);
    return 1;
  } else {
    printf("Got message from %s for non-existant machine.\n", from);
    return 0;
  }
}

state_name recv_pong(void * dfaSet, StateMachine * stateMachine, Message * m, char * from) {
  if(stateMachine != NULL) {
    printf("%ld(%d): Got a pong from %s Machine %ld\n", stateMachine->machine_id, stateMachine->current_state, from, m->from_machine_id);
    return 1;
  } else {
    printf("Got message from %s for non-existant machine.\n", from);
    return 0;
  }
}