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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
commit | ccd992355df7192993c666236047820244914598 (patch) | |
tree | f00fea65147227b7743083c6148396f74cd66935 /src/runtime/mem_plan9.go | |
parent | Initial commit. (diff) | |
download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/mem_plan9.go')
-rw-r--r-- | src/runtime/mem_plan9.go | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/runtime/mem_plan9.go b/src/runtime/mem_plan9.go new file mode 100644 index 0000000..9b18a29 --- /dev/null +++ b/src/runtime/mem_plan9.go @@ -0,0 +1,21 @@ +// Copyright 2010 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. + +package runtime + +import "unsafe" + +func sbrk(n uintptr) unsafe.Pointer { + // Plan 9 sbrk from /sys/src/libc/9sys/sbrk.c + bl := bloc + n = memRound(n) + if bl+n > blocMax { + if brk_(unsafe.Pointer(bl+n)) < 0 { + return nil + } + blocMax = bl + n + } + bloc += n + return unsafe.Pointer(bl) +} |