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go/src/runtime/export_mmap_test.go

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all: make copyright headers consistent with one space after period This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-01 15:57:46 -07:00
// Copyright 2016 The Go Authors. All rights reserved.
runtime: fix errno sign for some mmap and mincore cases The caller of mmap expects it to return a positive errno value, but the linux-arm64 and nacl-386 system calls returned a negative errno value. Correct them to negate the errno value. The caller of mincore expects it to return a negative errno value (yes, this is inconsistent), but the linux-mips64x and linux-ppc64x system call returned a positive errno value. Correct them to negate the errno value. Add a test that mmap returns errno with the correct sign. Brad added a test for mincore's errno value in https://golang.org/cl/19457. Fixes #14297. Change-Id: I2b93f32e679bd1eae1c9aef9ae7bcf0ba39521b5 Reviewed-on: https://go-review.googlesource.com/19455 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-02-10 22:46:51 -07:00
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
// Export guts for testing.
package runtime
var Mmap = mmap
runtime: fetch physical page size from the OS Currently the physical page size assumed by the runtime is hard-coded. On Linux the runtime at least fetches the OS page size during init and sanity checks against the hard-coded value, but they may still differ. On other OSes we wouldn't even notice. Add support on all OSes to fetch the actual OS physical page size during runtime init and lift the sanity check of PhysPageSize from the Linux init code to general malloc init. Currently this is the only use of the retrieved page size, but we'll add more shortly. Updates #12480 and #10180. Change-Id: I065f2834bc97c71d3208edc17fd990ec9058b6da Reviewed-on: https://go-review.googlesource.com/25050 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org>
2016-07-18 19:40:02 -06:00
var Munmap = munmap
runtime: fix errno sign for some mmap and mincore cases The caller of mmap expects it to return a positive errno value, but the linux-arm64 and nacl-386 system calls returned a negative errno value. Correct them to negate the errno value. The caller of mincore expects it to return a negative errno value (yes, this is inconsistent), but the linux-mips64x and linux-ppc64x system call returned a positive errno value. Correct them to negate the errno value. Add a test that mmap returns errno with the correct sign. Brad added a test for mincore's errno value in https://golang.org/cl/19457. Fixes #14297. Change-Id: I2b93f32e679bd1eae1c9aef9ae7bcf0ba39521b5 Reviewed-on: https://go-review.googlesource.com/19455 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-02-10 22:46:51 -07:00
const ENOMEM = _ENOMEM
const MAP_ANON = _MAP_ANON
const MAP_PRIVATE = _MAP_PRIVATE
runtime: fetch physical page size from the OS Currently the physical page size assumed by the runtime is hard-coded. On Linux the runtime at least fetches the OS page size during init and sanity checks against the hard-coded value, but they may still differ. On other OSes we wouldn't even notice. Add support on all OSes to fetch the actual OS physical page size during runtime init and lift the sanity check of PhysPageSize from the Linux init code to general malloc init. Currently this is the only use of the retrieved page size, but we'll add more shortly. Updates #12480 and #10180. Change-Id: I065f2834bc97c71d3208edc17fd990ec9058b6da Reviewed-on: https://go-review.googlesource.com/25050 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org>
2016-07-18 19:40:02 -06:00
const MAP_FIXED = _MAP_FIXED
func GetPhysPageSize() uintptr {
return physPageSize
}
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