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common/thread: remove unnecessary macro for thread_local

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we have bumped compiler version really high that all of them support this
This commit is contained in:
Weiyi Wang 2018-09-22 00:30:56 -04:00
parent d1a576eb14
commit 1e9d60cab6
1 changed files with 0 additions and 19 deletions
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19
src/common/thread.h
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@ -11,25 +11,6 @@
#include <thread> #include <thread>
#include "common/common_types.h" #include "common/common_types.h"
// Support for C++11's thread_local keyword was surprisingly spotty in compilers until very
// recently. Fortunately, thread local variables have been well supported for compilers for a while,
// but with semantics supporting only POD types, so we can use a few defines to get some amount of
// backwards compat support.
// WARNING: This only works correctly with POD types.
#if defined(__clang__)
#if !__has_feature(cxx_thread_local)
#define thread_local __thread
#endif
#elif defined(__GNUC__)
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
#define thread_local __thread
#endif
#elif defined(_MSC_VER)
#if _MSC_VER < 1900
#define thread_local __declspec(thread)
#endif
#endif
namespace Common { namespace Common {
int CurrentThreadId(); int CurrentThreadId();