InfoDialog::InfoDialog(QWidget *parent, int user_id, int num) :
QDialog(parent),
ui(new Ui::InfoDialog)
{
ui->setupUi(this);
setWindowTitle("我的借阅信息");
currentUserId = user_id;
num_can_borrow = num;
model = new QSqlRelationalTableModel(ui->tableView);
model->setEditStrategy(QSqlTableModel::OnManualSubmit);
model->setTable("borrowed_books");
model->setRelation(model->fieldIndex("book_id"), QSqlRelation("books", "id", "title"));
model->setHeaderData(model->fieldIndex("book_id"), Qt::Horizontal, tr("名称"));
model->setHeaderData(model->fieldIndex("start_time"), Qt::Horizontal, tr("借阅起始时间"));
model->setHeaderData(model->fieldIndex("end_time"), Qt::Horizontal, tr("借阅到期时间"));
ui->tableView->setModel(model);
ui->tableView->setColumnHidden(model->fieldIndex("id"), true);
ui->tableView->setColumnHidden(model->fieldIndex("user_id"), true);
ui->tableView->setSelectionMode(QAbstractItemView::SingleSelection);
ui->tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
idHiddenWidget = new QLineEdit(this);
idHiddenWidget->setVisible(false);
QDataWidgetMapper *mapper = new QDataWidgetMapper(this);
mapper->setModel(model);
mapper->addMapping(idHiddenWidget, model->fieldIndex("id"));
connect(ui->tableView->selectionModel(), SIGNAL(currentRowChanged(QModelIndex,QModelIndex)),
mapper, SLOT(setCurrentModelIndex(QModelIndex)));
model->setFilter("user_id='" + QString::number(currentUserId) + "'");
model->select();
connect(ui->getbackButton, SIGNAL(clicked()), this, SLOT(getback()));
connect(ui->confirmButton, SIGNAL(clicked()), this, SLOT(confirm()));
}
void verifier(void* arg){
int i;
int size;
int res;
int queue_index =0 ;
while(!die_flag){
//Race of threads
if(pthread_mutex_lock(&threadrace_lock) < 0){
perror("threadrace_lock");
exit(EXIT_FAILURE);
}
if(exit_status){
if(pthread_mutex_unlock(&threadrace_lock) < 0){
perror("threadrace_lock");
exit(EXIT_FAILURE);
}
break;
}
// for(i = 0; i < MATRIX_SIZE; ++i){
// memset(matrixA[i], 0, sizeof(float)*40*40);
// memset(inversedA[i], 0, sizeof(float)*40*40);
// }
if(DEBUG)
printf("thread: %u in critical section in verifier module \n", (unsigned int) pthread_self());
// printf("size: %d\n", size);
/*
receive matrix A and A^ from
*/
size = get_from_module1();
++queue_index;
if(DEBUG)
printf("queue index: %d\n", queue_index);
/* send A and A^ to multiplier */
if(!exit_status){
send_to_multiplier(size);
getback(size);
res = isIden(size);
if(res == 1){
printf("This is an invertable matrix\n\n");
}else if(res == -1){
printf("This is NOT invertable\n\n");
}
}
/*
receive multiplied matrix and check whether unit matrix or not
*/
//Race of threads
if(pthread_mutex_unlock(&threadrace_lock) < 0){
perror("threadrace_unlock");
exit(EXIT_FAILURE);
}
// for(i = 0; i < MATRIX_SIZE; ++i){
// memset(matrixA[i], 0, sizeof(float)*40*40);
// memset(inversedA[i], 0, sizeof(float)*40*40);
// }
if(exit_status){
break;
}
}
printf("d thread: %u out of critical section \n", (unsigned int) pthread_self());
}
