From 7868681998128e95cc797fc3cca934714fa948a0 Mon Sep 17 00:00:00 2001
From: "Thomas Bushnell, BSG" <tb@becket.net>
Date: Mon, 20 Aug 2001 23:43:29 -0700
Subject: id:"87hev152we.fsf@becket.becket.net".

---
 hurd.mdwn            |  1 +
 hurd/libthreads.mdwn | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 hurd/libthreads.mdwn

diff --git a/hurd.mdwn b/hurd.mdwn
index 55a72e1e..11995c87 100644
--- a/hurd.mdwn
+++ b/hurd.mdwn
@@ -93,6 +93,7 @@ in the *unstable* branch of the Debian archive.
   * [[libnetfs]] -- short introductory material
   * [[libdiskfs]]
   * [[libihash]]
+  * [[libthreads]]
   * [[libpthread]]
 * [[IO_Path]]
 * [[Porting]]
diff --git a/hurd/libthreads.mdwn b/hurd/libthreads.mdwn
new file mode 100644
index 00000000..8b1a97e6
--- /dev/null
+++ b/hurd/libthreads.mdwn
@@ -0,0 +1,28 @@
+[[!meta copyright="Copyright © 2011 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]]."]]"""]]
+
+`libthreads` a.k.a. C threads.
+
+
+# Internals
+
+
+## Threads' Death
+
+C threads death doesn't actually free the thread's stack (and maybe not the
+associated Mach ports either).  That's because there's no way to free the stack
+after the thread dies (because the thread of control is gone); the stack needs
+to be freed by something else, and there's nothing convenient to do it.  There
+are many ways to make it work.
+
+However, it isn't really a leak, because the unfreed resources do get used for
+the next thread.  So the issue is that the shrinkage of resource consumption
+never happens, but it doesn't grow without bounds; it just stays at the maximum
+even if the current number of threads is lower.
-- 
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