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Refined description of Asynch I/O build support.

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Mark Pizzolato 2012-01-13 15:23:53 -08:00
parent 3172e743ee
commit 6b6d7cccac
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Visual Studio Projects/0ReadMe_Projects.txt
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@ -44,7 +44,15 @@ simulator. The default working directory for included project files is the
"Visual Studio Projects" directory. "Visual Studio Projects" directory.
Only network devices are capable of using pthreads to enhance their Network devices are capable of using pthreads to enhance their performance.
performance. Build the desire simulator with USE_READER_THREAD defined. The To realize these benefits, you must build the desire simulator with
relevant simulators which have network support are VAX, VAX780 and PDP11. USE_READER_THREAD defined. The relevant simulators which have network
support are VAX, VAX780 and PDP11.
Additionally, simulators which contain devices which use the asynchronous
APIs in sim_disk.c and sim_tape.c can also achieve greater performance by
leveraging pthreads to perform blocking I/O in separate threads. Currently
the simulators which have such devices are VAX, VAX780 and PDP11. To
achieve these benefits the simulators must be built with SIM_ASYNCH_IO
defined.