NetApp Interview Question for Software Engineer / Developers






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Process PA can send signal to Process PB. But it PA can get that signal from kernel only.
For that kernel developers kept some mechanism inside like

"find_task_by_pid" call needs PID of process to which signal to be sent.
Then this call return task_struct instance.
"send_sig_info" call needs the aboce task_struct and signal name.
The above these two methods implemented for signal handling mechanism.

- mlakshmanarao July 20, 2011 | Flag Reply


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