From: Matt Birkholz <puck@birchwood-abbey.net>
Date: Sun, 19 Jul 2015 21:46:34 +0000 (-0700)
Subject: Make pruxffi.o state thread-local.
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=cfc75b48500141d3bbe3b4d6f973deb9a613ba51;p=mit-scheme.git

Make pruxffi.o state thread-local.

Declare cstach_depth thread-local.  The primitive caches might be
filled multiple times concurrently but they are read and written
atomically, so no harm done.
---

diff --git a/src/microcode/pruxffi.c b/src/microcode/pruxffi.c
index 7043f7b88..81ba6d4d4 100644
--- a/src/microcode/pruxffi.c
+++ b/src/microcode/pruxffi.c
@@ -402,7 +402,7 @@ cstack_pop (char * tos)
 }
 
 /* Number CStack frames, to detect slips. */
-int cstack_depth = 0;
+__thread int cstack_depth = 0;
 
 /* Callouts */