[clang-tools-extra] r354765 - [clangd] Add thread priority lowering for MacOS as well

[Hans Wennborg via cfe-commits]

Merged to release_80 in r354983.

On Mon, Feb 25, 2019 at 10:18 AM Kadir Cetinkaya via cfe-commits
<cfe-commits at lists.llvm.org> wrote:
>
> Author: kadircet
> Date: Mon Feb 25 01:19:26 2019
> New Revision: 354765
>
> URL: http://llvm.org/viewvc/llvm-project?rev=354765&view=rev
> Log:
> [clangd] Add thread priority lowering for MacOS as well
>
> Reviewers: ilya-biryukov
>
> Subscribers: ioeric, MaskRay, jkorous, arphaman, cfe-commits
>
> Tags: #clang
>
> Differential Revision: https://reviews.llvm.org/D58492
>
> Modified:
>     clang-tools-extra/trunk/clangd/Threading.cpp
>
> Modified: clang-tools-extra/trunk/clangd/Threading.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/Threading.cpp?rev=354765&r1=354764&r2=354765&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/Threading.cpp (original)
> +++ clang-tools-extra/trunk/clangd/Threading.cpp Mon Feb 25 01:19:26 2019
> @@ -7,6 +7,8 @@
>  #include <thread>
>  #ifdef __USE_POSIX
>  #include <pthread.h>
> +#elif defined(__APPLE__)
> +#include <sys/resource.h>
>  #endif
>
>  namespace clang {
> @@ -121,6 +123,12 @@ void setCurrentThreadPriority(ThreadPrio
>        Priority == ThreadPriority::Low && !AvoidThreadStarvation ? SCHED_IDLE
>                                                                  : SCHED_OTHER,
>        &priority);
> +#elif defined(__APPLE__)
> +  // https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/getpriority.2.html
> +  setpriority(PRIO_DARWIN_THREAD, 0,
> +              Priority == ThreadPriority::Low && !AvoidThreadStarvation
> +                  ? PRIO_DARWIN_BG
> +                  : 0);
>  #endif
>  }
>
>
>
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