Single address space operating system

Summary

In computer science, a single address space operating system (or SASOS) is an operating system that provides only one globally shared address space for all processes. In a single address space operating system, numerically identical (virtual memory) logical addresses in different processes all refer to exactly the same byte of data.[1]

Single address-space operating systems offer certain advantages. In a traditional OS with private per-process address space, memory protection is based on address space boundaries ("address space isolation"). Single address-space operating systems use a different approach for memory protection that is just as strong.[2][3] One advantage is that the same virtual-to-physical map page table can be used with every process (and in some SASOS, the kernel as well). This makes context switches on a SASOS faster than on operating systems that must change the page table and flush the TLB caches on every context switch.

SASOS projects include the following:

See alsoEdit

ReferencesEdit

  1. ^ Eric J. Koldinger; Jeffrey S. Chase; Susan J. Eggers (September 1992). "Architecture support for single address space operating systems". ACM SIGPLAN Notices. 27 (9): 175–186. doi:10.1145/143371.143508.
  2. ^ Tim Wilkinson; Kevin Murray; Stephen Russell; Gernot Heiser; Jochen Liedt (13 November 1995). "Single Address Space Operating Systems". Section 2: "Memory Protection". CiteSeerX 10.1.1.13.7042. {{cite journal}}: Cite journal requires |journal= (help)
  3. ^ Jeffrey S. Chase; Henry M. Levy; Michael J. Feeley; Edward D. Lazowska (November 1994). "Sharing and protection in a single-address-space operating system" (PDF). ACM Transactions on Computer Systems. 12 (4): 271–307. CiteSeerX 10.1.1.127.7313. doi:10.1145/195792.195795.
  4. ^ Michael Golm; Meik Felser; Christian Wawersich; Jürgen Kleinöder. "The JX Operating System" (PDF).
  5. ^ "OS-9 Technical Manual" p. 29 quote: "all user tasks share a common address space."
  6. ^ Kevin Boos, Namitha Liyanage, Ramla Ijaz, and Lin Zhong. "Theseus: an Experiment in Operating System Structure and State Management". 2020.
  7. ^ "Torsion Operating System". quote: "Torsion ... a single address space multitasking operating system with transparent data persistence."
  8. ^ "Vxworks Tutorial" quote: "In vxworks ... all application tasks share the same address space [unless the] optional tool named VxVMI [has been] used to allow each task to have its own address space."

BibliographyEdit

  • Jeffrey S. Chase; Henry M. Levy; Michael J. Feeley; Edward D. Lazowska (November 1994). "Sharing and protection in a single-address-space operating system". ACM Transactions on Computer Systems. 12 (4): 271–307. CiteSeerX 10.1.1.127.7313. doi:10.1145/195792.195795..
  • Heiser, Gernot; Elphinstone, Kevin; Vochteloo, Jerry; Russell, Stephen; Liedtke, Jochen (1998). "The Mungi Single-Address-Space Operating System". Software: Practice and Experience. 28 (9): 901–928. CiteSeerX 10.1.1.146.4216. doi:10.1002/(SICI)1097-024X(19980725)28:9<901::AID-SPE181>3.0.CO;2-7. S2CID 62189930. Archived from the original on June 26, 2022.
  • Michael M. Swift; Brian N. Bershad; Henry M. Levy (December 2003). "Improving the reliability of commodity operating systems". ACM SIGOPS Operating Systems Review. 37 (5): 207. CiteSeerX 10.1.1.5.3338. doi:10.1145/1165389.945466.
  • Eric J. Koldinger; Jeffrey S. Chase; Susan J. Eggers (September 1992). "Architecture support for single address space operating systems". ACM SIGPLAN Notices. 27 (9): 175–186. doi:10.1145/143371.143508.