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49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
package pool
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import (
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"time"
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"github.com/lightningnetwork/lnd/buffer"
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)
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const (
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// DefaultWriteBufferGCInterval is the default interval that a Write
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// will perform a sweep to see which expired buffer.Writes can be
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// released to the runtime.
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DefaultWriteBufferGCInterval = 15 * time.Second
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// DefaultWriteBufferExpiryInterval is the default, minimum interval
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// that must elapse before a Write will release a buffer.Write. The
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// maximum time before the buffer can be released is equal to the expiry
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// interval plus the gc interval.
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DefaultWriteBufferExpiryInterval = 30 * time.Second
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)
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// WriteBuffer is a pool of recycled buffer.Write items, that dynamically
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// allocates and reclaims buffers in response to load.
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type WriteBuffer struct {
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pool *Recycle
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}
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// NewWriteBuffer returns a freshly instantiated WriteBuffer, using the given
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// gcInterval and expiryIntervals.
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func NewWriteBuffer(gcInterval, expiryInterval time.Duration) *WriteBuffer {
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return &WriteBuffer{
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pool: NewRecycle(
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func() interface{} { return new(buffer.Write) },
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100, gcInterval, expiryInterval,
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),
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}
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}
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// Take returns a fresh buffer.Write to the caller.
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func (p *WriteBuffer) Take() *buffer.Write {
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return p.pool.Take().(*buffer.Write)
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}
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// Return returns the buffer.Write to the pool, so that it can be recycled or
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// released.
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func (p *WriteBuffer) Return(buf *buffer.Write) {
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p.pool.Return(buf)
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}
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