Re: Noob on memory and data streams...
noemailplease wrote:
I would like to write a (small) app in C++ that streams a "signal value"
(-1, 0 , +1) to a specific memory address where this value can be read
by a second application (over which I have very little control, other
than (possibly) specifying the memory address of the signal values).
This all seems a bit long-winded in my mind, and raises several questions:
Is it possible to specify (hard-code?) an address in which store a value?
That's platform-specific. There is no portable way.
How does one check that address is free beforehand?
Unknown. In most cases there is no way an application (a process) can
check anything that might belong to another application (process). It's
called "memory protection".
Is there some sort of semaphore to stop read/write collisions between
different applications?
There are ways to synchronize access to a resource. They are
platform-specific in most cases.
Is there a better way to do this?
Files.
V
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