github.com/flashbots/go-ethereum@v1.9.7/log/handler_go14.go (about)

     1  // +build go1.4
     2  
     3  package log
     4  
     5  import "sync/atomic"
     6  
     7  // swapHandler wraps another handler that may be swapped out
     8  // dynamically at runtime in a thread-safe fashion.
     9  type swapHandler struct {
    10  	handler atomic.Value
    11  }
    12  
    13  func (h *swapHandler) Log(r *Record) error {
    14  	return (*h.handler.Load().(*Handler)).Log(r)
    15  }
    16  
    17  func (h *swapHandler) Swap(newHandler Handler) {
    18  	h.handler.Store(&newHandler)
    19  }
    20  
    21  func (h *swapHandler) Get() Handler {
    22  	return *h.handler.Load().(*Handler)
    23  }