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Interfaces documented on this reference page conform to industry standards as follows:
funlockfile, POSIX.1c
Refer to the standards(5) reference page for more information about industry standards and associated tags.
Specifies the stream to be unlocked.
The funlockfile() function unlocks a stdio stream, causing the thread that had been holding the lock to relinquish exclusive use of the stream.
Matching flockfile() and funlockfile() calls can be nested. If the stream has been locked recursively, then it will remain locked until the last matching funlockfile() is called.
Behavior is unspecified if the file parameter is not pointer to a valid FILE structure.
Functions: flockfile(3), getc_unlocked(3), putc_unlocked(3) delim off