Commit 0d6f0267 authored by jgu21's avatar jgu21
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Block signals before invoking special or user handlers 



1. Block signals marked in sa_mask before invoking user handler
   if not in old style.
2. Block all signals before invoking special signal handler.

Change-Id: Ie1283e97ed28ee3421df584352cd62cb107264bc
Signed-off-by: default avatarjgu21 <jinghui.gu@intel.com>
parent 9c53671b
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