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| author | Daniel Maslowski <info@orangecms.org> | 2025-09-18 15:43:42 +0000 |
|---|---|---|
| committer | Jorropo <jorropo.pgm@gmail.com> | 2025-09-18 21:04:12 -0700 |
| commit | 3cf1aaf8b9c846c44ec8db679495dd5816d1ec30 (patch) | |
| tree | c48799377d006b2e9d82ffd90699464cee224698 /src/runtime/os_linux.go | |
| parent | 0ab038af6290c7fb52d4c26949d735692781b3d1 (diff) | |
| download | go-3cf1aaf8b9c846c44ec8db679495dd5816d1ec30.tar.xz | |
runtime: use futexes with 64-bit time on Linux
Linux introduced new syscalls to fix the year 2038 issue.
To still be able to use the old ones, the Kconfig option
COMPAT_32BIT_TIME would be necessary.
Use the new syscall with 64-bit values for futex by default.
Define _ENOSYS for detecting if it's not available.
Add a fallback to use the older syscall in case the new one is
not available, since Go runs on Linux from 2.6.32 on, per
https://go.dev/wiki/MinimumRequirements.
Updates #75133
Change-Id: I65daff0a3d06b55440ff05d8f5a9aa1c07eb201d
GitHub-Last-Rev: 96dd1bd84bd12d898e971157fc83da562cc4f6b4
GitHub-Pull-Request: golang/go#75306
Reviewed-on: https://go-review.googlesource.com/c/go/+/701615
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Mark Freeman <markfreeman@google.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/runtime/os_linux.go')
| -rw-r--r-- | src/runtime/os_linux.go | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/src/runtime/os_linux.go b/src/runtime/os_linux.go index f9fe1b5f33..080dd96532 100644 --- a/src/runtime/os_linux.go +++ b/src/runtime/os_linux.go @@ -40,9 +40,6 @@ type mOS struct { waitsema uint32 // semaphore for parking on locks } -//go:noescape -func futex(addr unsafe.Pointer, op int32, val uint32, ts, addr2 unsafe.Pointer, val3 uint32) int32 - // Linux futex. // // futexsleep(uint32 *addr, uint32 val) @@ -79,7 +76,7 @@ func futexsleep(addr *uint32, val uint32, ns int64) { var ts timespec ts.setNsec(ns) - futex(unsafe.Pointer(addr), _FUTEX_WAIT_PRIVATE, val, unsafe.Pointer(&ts), nil, 0) + futex(unsafe.Pointer(addr), _FUTEX_WAIT_PRIVATE, val, &ts, nil, 0) } // If any procs are sleeping on addr, wake up at most cnt. |