Copy-on-write

Copy-on-write (COW), sometimes referred to as implicit sharing^[1] or shadowing,^[2] is a resource-management technique used in computer programming to efficiently implement a "duplicate" or "copy" operation on modifiable resources^[3] (most commonly memory pages, storage sectors, files, and data structures).

^ "Implicit Sharing". Qt Project. Retrieved 10 November 2023.
^ Rodeh, Ohad (1 February 2008). "B-Trees, Shadowing, and Clones" (PDF). ACM Transactions on Storage. 3 (4): 1. CiteSeerX 10.1.1.161.6863. doi:10.1145/1326542.1326544. S2CID 207166167. Archived from the original (PDF) on 2 January 2017. Retrieved 10 November 2023.
^ Bovet, Daniel Pierre; Cesati, Marco (1 January 2002). Understanding the Linux Kernel. O'Reilly Media. p. 295. ISBN 9780596002138. Retrieved 10 November 2023.

[1] "Implicit Sharing". Qt Project. Retrieved 10 November 2023.

[2] Rodeh, Ohad (1 February 2008). "B-Trees, Shadowing, and Clones" (PDF). ACM Transactions on Storage. 3 (4): 1. CiteSeerX 10.1.1.161.6863. doi:10.1145/1326542.1326544. S2CID 207166167. Archived from the original (PDF) on 2 January 2017. Retrieved 10 November 2023.

[Linux-3] Bovet, Daniel Pierre; Cesati, Marco (1 January 2002). Understanding the Linux Kernel. O'Reilly Media. p. 295. ISBN 9780596002138. Retrieved 10 November 2023.

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Copy-on-write

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