common/thread: remove unnecessary macro for thread_local
we have bumped compiler version really high that all of them support this
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@ -11,25 +11,6 @@
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#include <thread>
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#include "common/common_types.h"
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// Support for C++11's thread_local keyword was surprisingly spotty in compilers until very
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// recently. Fortunately, thread local variables have been well supported for compilers for a while,
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// but with semantics supporting only POD types, so we can use a few defines to get some amount of
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// backwards compat support.
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// WARNING: This only works correctly with POD types.
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#if defined(__clang__)
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#if !__has_feature(cxx_thread_local)
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#define thread_local __thread
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#endif
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#elif defined(__GNUC__)
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#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
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#define thread_local __thread
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#endif
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#elif defined(_MSC_VER)
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#if _MSC_VER < 1900
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#define thread_local __declspec(thread)
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#endif
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#endif
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namespace Common {
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int CurrentThreadId();
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