Method alloc_fd

os/src/task/process.rs:43–50

(&mut self)

    }

    pub fn alloc_fd(&mut self) -> usize {
        if let Some(fd) = (0..self.fd_table.len()).find(|fd| self.fd_table[*fd].is_none()) {
            fd
        } else {
            self.fd_table.push(None);
            self.fd_table.len() - 1
        }
    }

    pub fn alloc_tid(&mut self) -> usize {
        self.task_res_allocator.alloc()