ftrylockfile()

Acquire ownership of a file, without blocking

Synopsis:

#include <stdio.h>

int ftrylockfile( FILE* file );

Arguments:

file: A pointer to the FILE object for the file you want to lock.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The ftrylockfile() function is used by a thread to acquire ownership of a FILE if the object is available; ftrylockfile() is a nonblocking version of flockfile().

Returns:

0: Success.
Nonzero: The lock can't be acquired.

Classification:

POSIX 1003.1 TSF

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	Yes
Thread	Yes