The MyHDL manual

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5.5.4 Interrupted system calls

The PLI module uses read and write system calls to communicate between the co-simulators. The implementation assumes that these calls are restarted automatically by the operating system when interrupted. This is apparently what happens on the Linux box on which MyHDL is developed.

It is known how non-restarted interrupted system calls should be handled, but currently such code cannot be tested on the MyHDL development platform. Also, it is not clear whether this is still a relevant issue with modern operating systems. Therefore, this issue has not been addressed at this moment. However, assertions have been included that should trigger when this situation occurs.

Whenever an assertion fires in the PLI module, please report it. The same holds for Python exceptions that cannot be easily explained.

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The MyHDL manual

Previous: 5.5.3 Other Verilog simulators Up: 5.5 Implementation notes Next: 5.5.5 VHDL

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Release 0.5.1, documentation updated on May 1, 2006.