add likely / unlikely macros
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@ -27,6 +27,14 @@
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# define JEMALLOC_CC_SILENCE_INIT(v)
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#endif
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#ifdef __GNUC__
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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#define likely(x) !!(x)
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#define unlikely(x) !!(x)
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#endif
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/*
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* Define a custom assert() in order to reduce the chances of deadlock during
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* assertion failure.
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