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#include <stdint.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <string.h>
#include "dist.h"
#include "ipc.h"
#include "banking.h"
void parent_phase4( my_info_t *me, dist_info_t *info ) {
Message msg;
BalanceHistory *b_history;
AllHistory history;
uint8_t i;
for( i = 1; i <= info->x; i++ ) {
if( !receive( me, i, &msg ) ) {
//TODO: what if s_payload_len more than s_history[i]?
b_history = (BalanceHistory *) msg.s_payload;
memcpy( &history.s_history[i-1], b_history, sizeof( *b_history ) );
}
}
history.s_history_len = info->x;
print_history( &history );
}
void parent_phase2( my_info_t *me, dist_info_t *info ) {
bank_robbery( me, info->x );
Message msg = {
.s_header = {
.s_magic = MESSAGE_MAGIC,
.s_payload_len = 0,
.s_type = STOP,
.s_local_time = get_physical_time()
}
};
send_multicast( me, &msg );
}
void parent_workflow( dist_info_t *info ) {
Message msg;
uint8_t i, receive_cnt;
pid_t wpid;
int status;
int ret = 0;
my_info_t me = {
.id = PARENT_ID,
.dist_info = info
};
// PARENT PHASE 0: Close all redundant descriptors
close_redundant_pipes( info, PARENT_ID );
// PARENT PHASE 1: Receive all STARTED messages from all childs
for( i = 1; i <= info->x; i++ ) {
if( !receive( &me, i, &msg ) ) {
if( msg.s_header.s_type != STARTED ) {
ret = 1;
break;
}
}
}
// PARENT PHASE 2: Bank robbery & send STOP for all childs
parent_phase2( &me, info );
// PARENT PHASE 3: Receive all DONE messages
for( i = 1; i <= info->x; i++ ) {
if( !receive( &me, i, &msg ) ) {
if( msg.s_header.s_type != DONE ) {
ret = 1;
break;
}
}
}
// PARENT PHASE 4: Receive all BALANCE_HISTORY and print all history
parent_phase4( &me, info );
// PARENT PHASE 5: Wait for the end of all processes
receive_cnt = info->x;
while( receive_cnt != 0 ) {
if( (wpid = wait(&status)) > 0 ) {
receive_cnt--;
}
}
exit( ret );
}
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