Method and apparatus for intraprocess locking of a

专利名称：Method and apparatus for intraprocess

locking of a shared resource in a computersystem

发明人：Scott D. Hammersley,Arthur D. Smet,Peter

M. Wottreng

申请号：US07/951482申请日：19920925公开号：US05392433A公开日：19950221

摘要：A method and apparatus for the intraprocess locking of a shared resource in acomputer system is disclosed. A computer system operates under the control of anoperating system. The operating system supports the asynchronous execution of aplurality of tasks, referred to herein as processes. Each process is capable of beingexecuted by a plurality of asynchronously executing programs. In addition to assuringthat only one process may use a shared computer resource, such as a magnetic storagedevice, tape drive, printer, software module, message queue, etc, at one time, theoperating system also grants access to a shared computer resource at the level of aprogram operating within a process. When one program executing within a processaccesses a shared computer resource, it requests that the operating system lock out allother programs executing asynchronous within that process, as well as other processesexecuting within the computer system, from that shared resource. Different types oflocks, such as exclusive and shared locks, are also supported.

申请人：INTERNATIONAL BUSINESS MACHINES CORPORATION

代理人：Curtis G. Rose,Steven W. Roth

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