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26 lines
513 B
26 lines
513 B
// +build !go1.4 |
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package log15 |
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import ( |
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"sync/atomic" |
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"unsafe" |
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) |
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// swapHandler wraps another handler that may be swapped out |
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// dynamically at runtime in a thread-safe fashion. |
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type swapHandler struct { |
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handler unsafe.Pointer |
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} |
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func (h *swapHandler) Log(r *Record) error { |
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return h.Get().Log(r) |
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} |
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func (h *swapHandler) Get() Handler { |
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return *(*Handler)(atomic.LoadPointer(&h.handler)) |
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} |
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func (h *swapHandler) Swap(newHandler Handler) { |
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atomic.StorePointer(&h.handler, unsafe.Pointer(&newHandler)) |
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}
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