Accession Number:

AD0692616

Title:

POST MORTEM PROGRAM FAILURE ANALYSIS IN A TIME-SHARING ENVIRONMENT,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH INFORMATION SCIENCES LAB

Personal Author(s):

Report Date:

1969-06-01

Pagination or Media Count:

23.0

Abstract:

As background a brief review is given of post mortem program failure analysis PMA as implemented on second generation computer systems. Then the impact of some special characteristics of a time-sharing environment TSE on PMA is discussed, namely continuous service to many users, sharing of programs and data, dynamic relocation, symbolic addressing, and elaborate protection schemes. General design principles for PMA operating within the framework of a deceased program are established, and some specific advantages due to the TSE are pointed out. Implications for the design of the operating system and the hardware of a TSE are derived, namely, the need for a symbolic instruction counter of a symbolic page address register is demonstrated, and necessary more general protection mechanisms are proposed. Author

Subject Categories:

  • Computer Programming and Software
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE