会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Method for controlling access to a shared file and apparatus therefor
    • 用于控制对共享文件的访问的方法及其装置
    • US5293618A
    • 1994-03-08
    • US614088
    • 1990-11-15
    • Michio TandaiMasaaki HamaFujio Fujita
    • Michio TandaiMasaaki HamaFujio Fujita
    • G06F3/06G06F12/00G06F12/08G06F7/00G06F7/04G06F7/20
    • G06F12/084G06F12/0866
    • In an information processing system including a file shared by computer systems each having a central processing system and a main memory, a method for controlling access to the shared file includes a step of storing blocks read from the file into the main memory when the blocks of the file are updated, and a step of comparing at least a portion of the blocks held in a cache memory with at least a portion of the blocks stored in the main memory. When the comparison of at least the portion of the blocks held in the cache memory with at least the portion of the blocks stored in the main memory indicates mismatching, the block is read from the file into the main memory, and when the comparison indicates matching, the block of the main memory is updated. The data to be updated may be in a resident area, an input/output buffer or a same area.
    • 在包括由具有中央处理系统和主存储器的计算机系统共享的文件的信息处理系统中,用于控制对共享文件的访问的方法包括将从该文件读取的块存储到主存储器中的步骤, 文件被更新,并且将保存在高速缓冲存储器中的块的至少一部分与存储在主存储器中的块的至少一部分进行比较的步骤。 当至少存储在高速缓冲存储器中的块的部分至少存储在主存储器中的块的部分的比较指示不匹配时,将块从文件读入主存储器,并且当比较指示匹配 ,主内存块更新。 要更新的数据可以在驻留区域,输入/输出缓冲器或相同区域中。