https://doxygen.bitcoincore.org/classfsbridge_1_1_file_lock.html
Bitcoin Core: fsbridge::FileLock Class Reference
bitcoin corefilelockclassreference
https://cran.wustl.edu/web/packages/filelock/index.html
CRAN: Package filelock
Place an exclusive or shared lock on a file. It uses 'LockFile' on Windows and 'fcntl' locks on Unix-like systems.
cran packagefilelock
https://docs.ganeti.org/docs/ganeti/2.14/api/py/ganeti.utils.filelock-module.html
ganeti.utils.filelock
ganetiutilsfilelock
https://api.dart.dev/stable/3.11.0/dart-io/FileLock-class.html
FileLock class - dart:io library - Dart API
API docs for the FileLock class from the dart:io library, for the Dart programming language.
filelockclassdartiolibrary