/*
* Perform the nightly report. Is called by every worker for each report period. workerNum is
* the worker making the call. Returns -1 on error, 0 otherwise.
*/
int
Report_DoReport(Bank *bank, int workerNum)
{
Report *rpt = bank->report;
assert(rpt);
Y;
// Acquire the report's lock to look at how many calls to DoReport have been made
pthread_mutex_lock(&lock);
rpt->reportCalls = rpt->reportCalls + 1;
// Wait for all of the workers to call _DoReport
while((rpt->reportCalls % numWorkers) != 0) {
pthread_cond_wait(&cond,&lock);
/*
* Only the last worker will "do the report"
* Rest will wait till the last worker calls doReport and then exit rightaway
*/
// Release the lock
pthread_mutex_unlock(&lock);
return 0;
}
// The last worker needs to tabulate all of transfer logs done by the
// individual workers into the bank's report
joinReports(rpt);
if (rpt->numReports >= MAX_NUM_REPORTS) {
pthread_mutex_unlock(&lock);
// We've run out of report storage for the bank
return -1;
}
/*
* Store the overall bank balance for the report.
*/
int err = Bank_Balance(bank, &rpt->dailyData[rpt->numReports].balance);
Y;
int oldNumReports = rpt->numReports;
Y;
rpt->numReports = oldNumReports + 1;
Y;
// Wake up all of the workers
pthread_cond_broadcast(&cond);
// Release the lock
pthread_mutex_unlock(&lock);
return err;
}
/*
* Perform the nightly report. Is called by every worker for each report period. workerNum is
* the worker making the call. Returns -1 on error, 0 otherwise.
*/
int
Report_DoReport(Bank *bank, int workerNum)
{
Report *rpt = bank->report;
assert(rpt); Y;
if (rpt->numReports >= MAX_NUM_REPORTS) {
// We've run out of report storage for the bank
return -1;
}
/*
* Store the overall bank balance for the report.
*/
int err = Bank_Balance(bank, &rpt->dailyData[rpt->numReports].balance); Y;
int oldNumReports = rpt->numReports; Y;
rpt->numReports = oldNumReports + 1; Y;
return err;
}
