From: arighi <arighi@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Thu, 3 Jun 2010 12:18:50 +0000 (+0000)
Subject: signal: correctly deliver signal to current_process.
X-Git-Tag: 2.5.0~27
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;ds=sidebyside;h=2a1c85e3ba1d419df58103d4f932f24f8e2afe1a;hp=2a1c85e3ba1d419df58103d4f932f24f8e2afe1a;p=bertos.git

signal: correctly deliver signal to current_process.

It may happen that a process needs to send a signal to itself to
synchronize on an asynchronous event, e.g., an event triggered by an
interrupt.

In such case we must correctly clear the proc->sig_wait mask.

This fix also improves the signal delivery's performance, because we
don't need to check anymore if we need to skip the delivery to
current_process.

NOTE: we can replace this check with an ASSERT(), if proc->sig_wait is
set the current process can't actively deliver a signal to itself
(it's in sleep state waiting for a signal and can't run by definition).

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@3890 38d2e660-2303-0410-9eaa-f027e97ec537
---