r358665 - [clang][CIndex] Use llvm::set_thread_priority

[Nico Weber via cfe-commits]

This breaks building with LLVM_ENABLE_THREADS=OFF. The call probably needs
to be behind a `#if LLVM_ENABLE_THREADS`.

FAILED: bin/c-index-test
...
lib/libclang.a(CIndex.cpp.o): In function `void llvm::function_ref<void
()>::callback_fn<clang_saveTranslationUnit::{lambda()#1}>(long)':
CIndex.cpp:(.text._ZN4llvm12function_refIFvvEE11callback_fnIZ25clang_saveTranslationUnitEUlvE_EEvl+0x5a):
undefined reference to `llvm::set_thread_priority(llvm::ThreadPriority)'
lib/libclang.a(CIndex.cpp.o): In function
`clang::setThreadBackgroundPriority()':
CIndex.cpp:(.text._ZN5clang27setThreadBackgroundPriorityEv+0x27): undefined
reference to `llvm::set_thread_priority(llvm::ThreadPriority)'
lib/libclang.a(CIndex.cpp.o): In function `clang_saveTranslationUnit':
CIndex.cpp:(.text.clang_saveTranslationUnit+0x316): undefined reference to
`llvm::set_thread_priority(llvm::ThreadPriority)'


On Thu, Apr 18, 2019 at 9:47 AM Kadir Cetinkaya via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> Author: kadircet
> Date: Thu Apr 18 06:49:20 2019
> New Revision: 358665
>
> URL: http://llvm.org/viewvc/llvm-project?rev=358665&view=rev
> Log:
> [clang][CIndex] Use llvm::set_thread_priority
>
> Reviewers: jkorous, gribozavr
>
> Subscribers: dexonsmith, arphaman, cfe-commits
>
> Tags: #clang
>
> Differential Revision: https://reviews.llvm.org/D60867
>
> Modified:
>     cfe/trunk/tools/libclang/CIndex.cpp
>
> Modified: cfe/trunk/tools/libclang/CIndex.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/libclang/CIndex.cpp?rev=358665&r1=358664&r2=358665&view=diff
>
> ==============================================================================
> --- cfe/trunk/tools/libclang/CIndex.cpp (original)
> +++ cfe/trunk/tools/libclang/CIndex.cpp Thu Apr 18 06:49:20 2019
> @@ -8723,9 +8723,7 @@ void clang::setThreadBackgroundPriority(
>    if (getenv("LIBCLANG_BGPRIO_DISABLE"))
>      return;
>
> -#ifdef USE_DARWIN_THREADS
> -  setpriority(PRIO_DARWIN_THREAD, 0, PRIO_DARWIN_BG);
> -#endif
> +  llvm::set_thread_priority(llvm::ThreadPriority::Background);
>  }
>
>  void cxindex::printDiagsToStderr(ASTUnit *Unit) {
>
>
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