C++ (Cpp) BufPageManager::close Examples

Example #1

File: testfilesystem.cpp Project: AnthonyWang14/DB_prj

void init() {
	FileManager* fm = new FileManager();
	BufPageManager* bpm = new BufPageManager(fm);
	fm->createFile("testfile.txt"); //新建文件
	int fileID;
	fm->openFile("testfile.txt", fileID); //打开文件，fileID是返回的文件id

	int index;
	BufType b = bpm->allocPage(fileID, 0, index, true);
	b[0] = 256;
	b[1] = 100;
	b[2] = 0;
	b[3] = 0;
	for (int i = 0; i < b[1]; i++) {
		b[i+4] = 0;
	}
	bpm->markDirty(index);
	fm->writePage(fileID, 0, b, 0);
	bpm->close();
}