[fpc-pascal] Inter-process communication, a cautionary tale

[Mark Morgan Lloyd]

michael.vancanneyt at wisa.be wrote:
> On Wed, 18 Jul 2012, Mark Morgan Lloyd wrote:
> 
>> I was reminded of this when somebody was asking about portable 
>> signalling APIs the other day, but I think it's also relevant to 
>> discussion of e.g. how to pass a keyword to a help viewer.
>>
>> I am obviously aware of the fact that FPC has an IPC unit which uses a 
>> temporary file, although I have always assumed that that was more to 
>> support targets like DOS that had absolutely no concept of pipes or 
>> sockets. But perhaps it really is the safest choice in all cases.
> 
> In which unit did you find this ?
> 
> The IPC unit in FPC uses a unix socket  on unix, and on windows a 
> Windows window handle to copy data.

I believe I'm thinking of TSimpleIPC etc. My apologies if I've got this 
wrong, or if what I read was outdated "Ignorance of the law is no defense").

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]