 qmuntal
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2c2be756b9
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windows: use syscall.SyscallN in Proc.Call
All the SyscallX functions are deprecated in favor of SyscallN. The
latter is easier to use, supports more arguments, and uses less stack.
Autogenerated wrappers already switch to SyscallN in https://go-review.googlesource.com/c/sys/+/691715.
Fixes golang/go#78317
Change-Id: I7e56e713d1c20558e9932d757299796836c9c04f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/758700
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2026-03-24 10:52:03 -07:00 |
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qmuntal
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5e63aa5e0f
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windows: export O_FILE_FLAG_* to be used in os.OpenFile on windows
These file flags are supported by os.OpenFile since CL 699415.
Closes golang/go#73676
Change-Id: Iaf846c9cb98c1458bbc30d05ad8a331ef1f332df
Reviewed-on: https://go-review.googlesource.com/c/sys/+/700975
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
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2025-09-26 11:36:48 -07:00 |
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qmuntal
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3d9a6b8079
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windows: add WSADuplicateSocket
WSADuplicateSocket is useful to pass sockets between processes on
Windows.
For golang/go#10350.
Change-Id: I6563184fe4d4477d402a6af81b254bd8aa992d2e
Reviewed-on: https://go-review.googlesource.com/c/sys/+/668215
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Carlos Amedee <carlos@golang.org>
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2025-05-02 09:05:10 -07:00 |
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Quim Muntal
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e0753d4694
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Revert "windows/mkwinsyscall: use syscall.SyscallN instead of syscall.Syscall{6,9,12,15}"
This reverts CL 614082.
Reason for revert: syscall.SyscallN allocates more than its syscall.SyscallX counterparts, producing perf-related test failures across the board.
Updates #70197
Change-Id: I51107d909fcdbef4e65ee3f84932b2a0e7804f1b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/625375
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2024-11-05 15:28:52 +00:00 |
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qmuntal
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d045236a8d
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windows: implement Ftruncate using a single syscall on Windows
Ftruncate can be implemented on Windows using a single syscall. This
makes the implementation more efficient and less prone to races when
used in combination with other Seek calls.
Note that this is the x/sys counterpart for CL 618835.
Change-Id: Ie9be356bd953ccce85c0dd87a5dcc6ccf4fec464
Reviewed-on: https://go-review.googlesource.com/c/sys/+/621935
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Auto-Submit: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
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2024-10-28 14:49:53 +00:00 |
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qmuntal
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7143f4a4e1
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windows: manually initialize NewNTUnicodeString
The `RtlInitUnicodeString` syscall can be avoided by manually
initializing the `NTUnicodeString`.
The process is described in [WdmlibRtlInitUnicodeStringEx](https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdmsec/nf-wdmsec-wdmlibrtlinitunicodestringex).
The less syscalls, the better. It also makes the function faster:
```
goos: windows
goarch: amd64
pkg: golang.org/x/sys/windows
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
NewNTUnicodeString-12 181.05n ± 15% 96.32n ± 11% -46.80% (p=0.000 n=10)
```
Change-Id: Iaf079acdcc2024cdca6b6b649a711f6be99c5b87
Reviewed-on: https://go-review.googlesource.com/c/sys/+/618175
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2024-10-07 19:17:02 +00:00 |
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