Page什么意思

// 假设我们有一个数组数据需要分页显示
const data = Array.from({ length: 100 }, (_, i) => `Item ${i + 1}`);
const pageSize = 10;
let currentPage = 1;

function displayPage(page) {
  const start = (page - 1) * pageSize;
  const end = start + pageSize;
  const pageData = data.slice(start, end);
  console.log(`Page ${page}:`, pageData);
}

// 显示第一页
displayPage(currentPage);

// 切换到下一页
currentPage++;
displayPage(currentPage);

// 页表结构
struct PageTableEntry {
  boolean present;
  int frameNumber;
}

// 分配内存页
function allocatePage(processId, virtualAddress) {
  if (pageTable[processId][virtualAddress].present) {
    return pageTable[processId][virtualAddress].frameNumber;
  } else {
    int frameNumber = findFreeFrame();
    pageTable[processId][virtualAddress].present = true;
    pageTable[processId][virtualAddress].frameNumber = frameNumber;
    return frameNumber;
  }
}