From: Bruno Haible <bruno@clisp.org>
Date: Mon, 13 Oct 2008 00:32:53 +0000 (+0200)
Subject: Add a comment.
X-Git-Tag: v0.1~6851^2
X-Git-Url: http://erislabs.org.uk/gitweb/?a=commitdiff_plain;h=5b0c33dc1d8dcc68e21078ae7520fe375040aa3c;p=gnulib.git

Add a comment.
---

diff --git a/lib/glthread/thread.h b/lib/glthread/thread.h
index a04e4a400..a5f62a1f1 100644
--- a/lib/glthread/thread.h
+++ b/lib/glthread/thread.h
@@ -137,6 +137,9 @@ extern int glthread_in_use (void);
 
 /* -------------------------- gl_thread_t datatype -------------------------- */
 
+/* This choice of gl_thread_t assumes that
+     pthread_equal (a, b)  is equivalent to  ((a) == (b)).
+   This is the case on all platforms in use in 2008.  */
 typedef pthread_t gl_thread_t;
 # define glthread_create(THREADP, FUNC, ARG) \
     (pthread_in_use () ? pthread_create (THREADP, NULL, FUNC, ARG) : ENOSYS)