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authorRuss Cox <rsc@golang.org>2014-11-11 17:07:54 -0500
committerRuss Cox <rsc@golang.org>2014-11-11 17:07:54 -0500
commitece09790afb822fed2bd2e8ac3a803e5ccbb8e3a (patch)
tree299d51628d4e8884dab448301320dee91ad20d54 /src/runtime/lfstack_32bit.go
parent580ef3e4afe6e31f21e21d3d0919d8a033071320 (diff)
downloadgo-ece09790afb822fed2bd2e8ac3a803e5ccbb8e3a.tar.xz
[dev.cc] runtime: convert parallel support code from C to Go
The conversion was done with an automated tool and then modified only as necessary to make it compile and run. [This CL is part of the removal of C code from package runtime. See golang.org/s/dev.cc for an overview.] LGTM=r R=r, austin CC=dvyukov, golang-codereviews, iant, khr https://golang.org/cl/172250043
Diffstat (limited to 'src/runtime/lfstack_32bit.go')
-rw-r--r--src/runtime/lfstack_32bit.go13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/runtime/lfstack_32bit.go b/src/runtime/lfstack_32bit.go
new file mode 100644
index 0000000000..0eebbd9740
--- /dev/null
+++ b/src/runtime/lfstack_32bit.go
@@ -0,0 +1,13 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build 386 arm
+
+package runtime
+
+// On 32-bit systems, the stored uint64 has a 32-bit pointer and 32-bit count.
+const (
+ lfPtrBits = 32
+ lfCountMask = 1<<32 - 1
+)