blob: 5bdfd080f57c303ff20cf274a3ca5aa45adb78cb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
$NetBSD: patch-js__public__HeapAPI.h,v 1.3 2013/08/07 12:17:54 ryoon Exp $
From bugzilla, bug 840242,
https://hg.mozilla.org/integration/mozilla-inbound/rev/49e4ff129351
Use the runtime page size to control arena decommit.
As a side effect, this removes the hard coded page-size == 4k requirement.
+++ js/public/HeapAPI.h
--- js/public/HeapAPI.h.orig 2013-07-30 00:58:18.000000000 +0000
+++ js/public/HeapAPI.h
@@ -13,24 +13,7 @@
namespace js {
namespace gc {
-/*
- * Page size must be static to support our arena pointer optimizations, so we
- * are forced to support each platform with non-4096 pages as a special case.
- * Note: The freelist supports a maximum arena shift of 15.
- * Note: Do not use JS_CPU_SPARC here, this header is used outside JS.
- */
-#if (defined(SOLARIS) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)) && \
- (defined(__sparc) || defined(__sparcv9) || defined(__ia64))
-const size_t PageShift = 13;
-const size_t ArenaShift = PageShift;
-#elif defined(__powerpc64__)
-const size_t PageShift = 16;
const size_t ArenaShift = 12;
-#else
-const size_t PageShift = 12;
-const size_t ArenaShift = PageShift;
-#endif
-const size_t PageSize = size_t(1) << PageShift;
const size_t ArenaSize = size_t(1) << ArenaShift;
const size_t ArenaMask = ArenaSize - 1;
|
