llvm-6502/Threading.inc at cce85e19f99fac40fc9b0877f1afade7d79b97ab - llvm-6502 - Applefritter: Git

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Chris Bieneman 8744520b53 Removing the static initializer in ManagedStatic.cpp by using llvm_call_once to initialize the ManagedStatic mutex.

Summary:
This patch adds an llvm_call_once which is a wrapper around std::call_once on platforms where it is available and devoid of bugs. The patch also migrates the ManagedStatic mutex to be allocated using llvm_call_once.

These changes are philosophically equivalent to the changes added in r219638, which were reverted due to a hang on Win32 which was the result of a bug in the Windows implementation of std::call_once.

Reviewers: aaron.ballman, chapuni, chandlerc, rnk

Reviewed By: rnk

Subscribers: majnemer, llvm-commits

Differential Revision: http://reviews.llvm.org/D5922

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220932 91177308-0d34-0410-b5e6-96231b3b80d8

2014-10-30 22:07:09 +00:00

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 #include <thread>
 void llvm::call_once(once_flag& flag, void (*fptr)(void)) {
   std::call_once(flag, fptr);
 }