68 lines
1.4 KiB
Go
68 lines
1.4 KiB
Go
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package reedsolomon
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import (
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"runtime"
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"github.com/klauspost/cpuid"
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)
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// Option allows to override processing parameters.
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type Option func(*options)
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type options struct {
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maxGoroutines int
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minSplitSize int
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useAVX2, useSSSE3 bool
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}
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var defaultOptions = options{
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maxGoroutines: 50,
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minSplitSize: 512,
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}
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func init() {
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if runtime.GOMAXPROCS(0) <= 1 {
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defaultOptions.maxGoroutines = 1
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}
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// Detect CPU capabilities.
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defaultOptions.useSSSE3 = cpuid.CPU.SSSE3()
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defaultOptions.useAVX2 = cpuid.CPU.AVX2()
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}
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// WithMaxGoroutines is the maximum number of goroutines number for encoding & decoding.
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// Jobs will be split into this many parts, unless each goroutine would have to process
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// less than minSplitSize bytes (set with WithMinSplitSize).
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// For the best speed, keep this well above the GOMAXPROCS number for more fine grained
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// scheduling.
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// If n <= 0, it is ignored.
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func WithMaxGoroutines(n int) Option {
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return func(o *options) {
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if n > 0 {
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o.maxGoroutines = n
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}
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}
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}
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// MinSplitSize Is the minimum encoding size in bytes per goroutine.
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// See WithMaxGoroutines on how jobs are split.
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// If n <= 0, it is ignored.
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func WithMinSplitSize(n int) Option {
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return func(o *options) {
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if n > 0 {
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o.maxGoroutines = n
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}
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}
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}
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func withSSE3(enabled bool) Option {
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return func(o *options) {
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o.useSSSE3 = enabled
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}
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}
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func withAVX2(enabled bool) Option {
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return func(o *options) {
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o.useAVX2 = enabled
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}
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}
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