From: Ivan Maidanski <ivmai@mail.ru>
Date: Thu, 29 Aug 2019 21:28:23 +0000 (+0300)
Subject: Disable mprotect-based incremental GC if /proc roots are used (Linux)
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=79ae7acd5ce4b48478302c7e1610e15e482381f5;p=gc

Disable mprotect-based incremental GC if /proc roots are used (Linux)

The incremental GC is considered incompatible with /proc roots.

* include/private/gcconfig.h [USE_PROC_FOR_LIBRARIES
&& GC_LINUX_THREADS] (MPROTECT_VDB): Undefine; add comment.
---

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index ffd8e3a3..2dda9401 100644
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -3153,6 +3153,11 @@ EXTERN_C_BEGIN
 # undef MPROTECT_VDB
 #endif
 
+#if defined(USE_PROC_FOR_LIBRARIES) && defined(GC_LINUX_THREADS)
+  /* Incremental GC is incompatible with /proc roots.   */
+# undef MPROTECT_VDB
+#endif
+
 #if defined(MPROTECT_VDB) && defined(GC_PREFER_MPROTECT_VDB)
   /* Choose MPROTECT_VDB manually (if multiple strategies available).   */
 # undef PCR_VDB