专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4104718A System for protecting shared files in a multiprogrammed computer 失效
标题翻译：用于保护多程序计算机中的共享文件的系统
公开(公告)号：US4104718A
公开(公告)日：1978-08-01
申请号：US533038
申请日：1974-12-16
申请人： Alain Poublan , Charles Bachman , Jacques Bouvard
发明人： Alain Poublan , Charles Bachman , Jacques Bouvard
IPC分类号： G06F9/46 , G06F12/14 , G06F9/19 , G06F3/00 , G06F7/10
CPC分类号： G06F9/52 , G06F12/1491 , Y10S707/99938
摘要： An arrangement for sharing file information among plural processes in a multiprogrammed computing system. Source program file declarations are compiled into file control structures which are placed in skeletal segments, the segments forming units of potential sharing between active processes. Those segments which contain file control structures are placed in either the address space of (1) all processes, (2) related processes, or (3) a single process, depending upon the declared sharing level of the file. Job control language (JCL) commmands are expanded into JCL file control structures and merged with the source language structures to form a file request control structure. This request may be compared against a catalog of existing external files, a check being made to insure that the account on whose behalf a computing job is requesting file assignment is authorized to obtain the requested access to the file. Further tests are then made to guarantee compatibility between the request and the current status of the file.
摘要翻译：一种用于在多程序计算系统中的多个进程之间共享文件信息的装置。源程序文件声明被编译成放置在骨架段中的文件控制结构，这些段形成活动进程之间的潜在共享单元。包含文件控制结构的段被放置在（1）所有进程的地址空间中，（2）相关进程或（3）单个进程，这取决于所声明的文件共享级别。作业控制语言（JCL）的命令被扩展为JCL文件控制结构，并与源语言结构进行合并，形成文件请求控制结构。该请求可以与现有外部文件的目录进行比较，进行检查以确保计算作业正在请求文件分配的帐户被授权获得对文件的请求访问。然后进一步测试以确保请求与文件的当前状态之间的兼容性。

IPRDB

热门服务

关于我们

友情链接

联系方式