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Style: use atomic CompareAndSwap (#151)
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@ -92,7 +92,7 @@ func (u *URLTest) fallback() {
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}
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func (u *URLTest) speedTest() {
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if atomic.AddInt32(&u.once, 1) != 1 {
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if atomic.CompareAndSwapInt32(&u.once, 0, 1) {
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return
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}
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defer atomic.StoreInt32(&u.once, 0)
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