summaryrefslogtreecommitdiff
path: root/glibc/critical_section.mdwn
blob: 6c0b9c55a071fc3c821cca60bef70ebf0ecd4c2e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
[[!meta copyright="Copyright © 2012 Free Software Foundation, Inc."]]

[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]

Quoting from `hurd/hurd/signal.h`:

> A *critical section* is a section of code which cannot safely be interrupted
> to run a [[signal handler|signal]]; for example, code that holds any lock
> cannot be interrupted lest the signal handler try to take the same lock and
> deadlock result.

[[!tag open_issue_glibc]]Checking the code for any violations would be a useful
task of [[open_issues/code_analysis]]/[[service_solahart_jakarta_selatan__082122541663/formal_verification]].