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Operating Systems - David Vernon

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<strong>Operating</strong> System Concepts<br />

Processes<br />

– Signal<br />

» a way of allowing one process to communicate<br />

with another process<br />

» In particular, if the other process is not<br />

expecting the communication<br />

» A signal causes the process to suspend its<br />

operation (saving it’s registers) and start<br />

running a special signal handling procedure<br />

» Once the signal handler is complete, the<br />

process resumes<br />

Copyright © 2007 <strong>David</strong> <strong>Vernon</strong> (www.vernon.eu)

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