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Lock, changes are disallowed until the user requests and receives an exclusive lock on the file from the master repository. Merge , users may freely edit files, but are informed of possible conflicts upon checking their changes into the repository, whereupon the version control system may merge changes on both sides, or let the user decide when ...
git reset makes the current branch point to some specific revision or branch. git reset --hard makes the current branch point to some specific revision or branch, and replaces the current working files with the files from that branch. git merge merges files from a given branch into the current branch. git push
For example, a lock file might govern access to a set of related resources, such as several different files, directories, a group of disk partitions, or selected access to higher level protocols like servers or database connections. When using lock files, care must be taken to ensure that operations are atomic. To obtain a lock, the process ...
Version control (also known as revision control, source control, and source code management) is the software engineering practice of controlling, organizing, and tracking different versions in history of computer files; primarily source code text files, but generally any type of file.
One (called the iopen glock) keeps track of which processes have the inode open. The other (the inode glock) controls the cache relating to that inode. A glock has four states, UN (unlocked), SH (shared – a read lock), DF (deferred – a read lock incompatible with SH) and EX (exclusive). Each of the four modes maps directly to a DLM lock mode.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 December 2024. Restoring the software of an electronic device to its original state For the Tilian Pearson album, see Factory Reset (album). A factory reset, also known as hard reset or master reset, is a software restore of an electronic device to its original system state by erasing all data ...
Raynal demonstrates how to implement an R/W lock using two mutexes and a single integer counter. The counter, b, tracks the number of blocking readers. One mutex, r, protects b and is only used by readers; the other, g (for "global") ensures mutual exclusion of writers. This requires that a mutex acquired by one thread can be released by another.
For example, in the x86 architecture, asserting the RESET line halts the CPU; this is done after the system is switched on and before the power supply has asserted "power good" to indicate that it is ready to supply stable voltages at sufficient power levels. [2] Reset places less stress on the hardware than power cycling, as the power is not ...