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47 lines
1.1 KiB
47 lines
1.1 KiB
4 years ago
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package render
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import "bytes"
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// bufPool represents a reusable buffer pool for executing templates into.
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var bufPool *BufferPool
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// BufferPool implements a pool of bytes.Buffers in the form of a bounded channel.
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// Pulled from the github.com/oxtoacart/bpool package (Apache licensed).
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type BufferPool struct {
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c chan *bytes.Buffer
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}
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// NewBufferPool creates a new BufferPool bounded to the given size.
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func NewBufferPool(size int) (bp *BufferPool) {
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return &BufferPool{
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c: make(chan *bytes.Buffer, size),
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}
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}
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// Get gets a Buffer from the BufferPool, or creates a new one if none are
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// available in the pool.
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func (bp *BufferPool) Get() (b *bytes.Buffer) {
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select {
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case b = <-bp.c:
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// reuse existing buffer
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default:
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// create new buffer
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b = bytes.NewBuffer([]byte{})
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}
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return
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}
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// Put returns the given Buffer to the BufferPool.
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func (bp *BufferPool) Put(b *bytes.Buffer) {
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b.Reset()
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select {
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case bp.c <- b:
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default: // Discard the buffer if the pool is full.
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}
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}
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// Initialize buffer pool for writing templates into.
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func init() {
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bufPool = NewBufferPool(64)
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}
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