On 3/3/2022 9:43 PM, Travis Siegel wrote:
I'm no expert, but I'm pretty sure linux does have locking in various
increments. File locking being the easiest, then access to portions
of said file. You may need to use various interfaces to accomplish
the tasks, but there are several programs I use regularly on linux
that couldn't function properly without some form of locking/sharing.
You may need to do some research into how linux handles such things,
but I'm positive such apis/includes exist. It's kind of required
considering the multitasking nature of the os.
I'd be extremely surprised if MacOS didn't have something similar,
considering it's based on Free BSD, and like linux, BSD almost has to
have such facilities, just because of it's very nature. Perhaps you're
not looking in the right places for documented information on such
things, or perhaps I misunderstood the issue, and if so, I apologize
for the confusion, but I can't imagine any way linux and MacOS don't
have locking/sharing as part of the os in some way.
As I mentioned, I am dealing with this for a larger (commercial)
programming project. Again, neither Linux nor macOS properly support
record locking (yes, there is a very rudimentary file locking in both of
them, but that is no solution when requiring record locking in
applications that share a common database but do not require a dedicated
file server).
This was added to DOS (and mostly, but not completely supported by
Windows) back in DOS 3.0, when first networking was introduced, in a
rather simple to use and effective way.
Yes, it is surprising that this doesn't exist in Linux (macOS gives a
rodents posterior regarding server use to begin with), but there has
been the trend to work in a client-server setup, where such a server, as
a single task/entity/application is in control who can read and/or write
what contents and what time.
If you have a viable API, that works across at least a wide range of
distros, if not all of them, then please share your wisdom. I would be
glad to make use of that and reduce the amount of conditional program
depending on the OS compiled for necessary...
Ralf
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