On 2020-07-10 01:05, Travis Siegel wrote:
On 7/9/2020 5:11 PM, Tomas Hajny wrote:
On 2020-07-09 22:58, Michael Van Canneyt wrote:
On Thu, 9 Jul 2020, Bo Berglund via fpc-pascal wrote:
On Thu, 9 Jul 2020 19:36:31 +0200 (CEST), Michael Van Canneyt
<mich...@freepascal.org> wrote:
Is this done in a thread ? Since you're using indy, I suppose so.
The crt unit is not thread safe. The implementation on Windows and
Linux is
totally different, which may explain the difference you see.
Is there a way to check user keyboard input in the main program
while
action is being done in the server's threads?
Sure, do a fpselect() on file descriptor 0.
You can use the unit Keyboard as well, which is cross-platform.
cross platform doesn't mean thread safe, which is the primary reason
for *not* using crt unit. I have no idea if keyboard is thread safe
or not, and I've not seen anything in this discussion to answer that
question either.
The point is that unit Keyboard makes no changes to the console output
(unlike unit Crt). Unit Crt provides special features allowing to
perform output at a particular position of the console (which makes it
less reliable in multi-threaded scenarios). Without this unit, standard
simple I/O is used. No, it isn't guaranteed to be thread-safe per se,
you should make sure to wait for finishing output from the first thread
before you start writing in another, that's your responsibility, but
there are ways for achieving that (as mentioned earlier in this thread).
Is there sample code of server code so testing can be performed
outside the discussion parameters? I have looked for years for
client/server information for freepascal, and never found anything,
then this discussion shows some code for running a server, where did
that information come from? I'm apparently really bad on searching for
said information.
I'm not sure how we got from a multi-threaded application to
client/server, but there are certainly examples of using FPC for both
client and server in our SVN (see e.g. packages/fcl-net/examples/ and
packages/fcl-web/examples/).
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