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unix: add SchedGetaffinity and SchedSetaffinity on Linux

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SchedGetaffinity and SchedSetaffinity are used to get and set a thread's
CPU affinity mask.

See http://man7.org/linux/man-pages/man2/sched_setaffinity.2.html for
details.

Also add a manual implementation of CpuSet_t and the corresponding
accessor functions (mimicking the CPU_* macros from sched.h).

Fixes golang/go#11243

Change-Id: Ia5abc0053cd06810b3b09ab65c27434f5323c1ad
Reviewed-on: https://go-review.googlesource.com/85915
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Tobias Klauser
2018-01-05 20:31:47 +00:00
committed by Tobias Klauser
parent a3f2cbd54c
commit 12d9d5b281
15 changed files with 226 additions and 2 deletions
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unix/syscall_linux.go
-2
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@@ -1455,11 +1455,9 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) {
// RtSigtimedwait
// SchedGetPriorityMax
// SchedGetPriorityMin
// SchedGetaffinity
// SchedGetparam
// SchedGetscheduler
// SchedRrGetInterval
// SchedSetaffinity
// SchedSetparam
// SchedYield
// Security