/
decrement_driver.c
61 lines (50 loc) · 1.48 KB
/
decrement_driver.c
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//Elsa Gonsiorowski
//September 3, 2015
#include <stdio.h>
#include "ross.h"
#include "suspend.h"
//Init function
// - called once for each LP
// ! LP can only send messages to itself during init !
void decrement_init (decrement_state *s, tw_lp *lp) {
int self = lp->gid;
// init state data
s->decrement_value = 1;
s->round_count = 0;
// Init message to myself
tw_event *e = tw_event_new(self, 2, lp);
message *msg = tw_event_data(e);
msg->type = WAKEUP;
tw_event_send(e);
}
//Forward event handler
void decrement_event (decrement_state *s, tw_bf *bf, message *in_msg, tw_lp *lp) {
int self = lp->gid;
if (in_msg->type != WAKEUP) {
tw_error(TW_LOC, "Decrement LP received wrong message type");
}
s->round_count++;
int i;
for (i = 0; i < total_receivers; i++) {
tw_event *e = tw_event_new(i+2, 1, lp);
message *msg = tw_event_data(e);
msg->type = DECREMENT;
msg->value = s->decrement_value;
tw_event_send(e);
}
// Wakeup self
tw_event *e = tw_event_new(self, 2, lp);
message *msg = tw_event_data(e);
msg->type = WAKEUP;
tw_event_send(e);
}
//Reverse Event Handler
void decrement_event_reverse (decrement_state *s, tw_bf *bf, message *in_msg, tw_lp *lp) {
// there is nothing to do here
return;
}
//report any final statistics for this LP
void decrement_final (decrement_state *s, tw_lp *lp){
int self = lp->gid;
printf("%d sent %d rounds of decrement messages, each with value %d\n", self, s->round_count, s->decrement_value);
}