From: Matt Birkholz <puck@birchwood-abbey.net>
Date: Sat, 6 Dec 2014 00:55:10 +0000 (-0700)
Subject: smp: share: ux.o
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=abafeb6b174a9e5fc3f619dea4fd7451eae23f96;p=mit-scheme.git

smp: share: ux.o
---

diff --git a/README.txt b/README.txt
index c71b6ef12..8845e8943 100644
--- a/README.txt
+++ b/README.txt
@@ -640,6 +640,13 @@ command line.  The remaining 12 belong to the 7 microcode modules and
   00000000 B UX_out_of_files_p
   00000004 b memoized_clk_tck
 
+	OK.  Assuming long's are written atomically, and the
+	occasional extra call to sysconf is not a problem,
+	memoized_clk_tck should not need locking.  Similarly,
+	UX_out_of_files_p is only ever read at ux.c:55.  If two
+	threads examine it at the same time, they may both request a
+	GC.  That is costly, but not a disaster, and hardly likely.
+
   uxctty.o:
   00000000 b ctty_fildes
   0000024c b current_interrupt_chars