Page "Atomicity (database systems)" Paragraph 11

Ultimately, any application-level implementation relies on operating-system functionality, which in turn makes use of specialized hardware to guarantee that an operation remains non-interruptible: either by software attempting to re-divert system resources ( see pre-emptive multitasking ) or by resource-unavailability ( such as power-outages ).

For example, POSIX-compliant systems provide the system call that allows applications to atomically open a file.

Other popular system-calls that may assist in achieving atomic operations from userspace include,,,,, ( NetBSD re-startable sequences ),,,, and.