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authorThomas Schwinge <thomas@codesourcery.com>2012-12-20 22:13:17 +0100
committerThomas Schwinge <thomas@codesourcery.com>2012-12-20 22:13:17 +0100
commitc77f17cfb827c17de7f1d5318cbbbeea03286715 (patch)
treec72a20c83f42c10967120c633edd51628240611f /glibc/critical_section.mdwn
parent8e4cd1e9147637ead1ef782cb67a660eb45845a1 (diff)
open_issues/fork_deadlock: Data I collected.
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+[[!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]]/[[open_issues/formal_verification]].