mirror of
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792b4dba2c
* update github.com/blevesearch/bleve v2.0.2 -> v2.0.3 * github.com/denisenkom/go-mssqldb v0.9.0 -> v0.10.0 * github.com/editorconfig/editorconfig-core-go v2.4.1 -> v2.4.2 * github.com/go-chi/cors v1.1.1 -> v1.2.0 * github.com/go-git/go-billy v5.0.0 -> v5.1.0 * github.com/go-git/go-git v5.2.0 -> v5.3.0 * github.com/go-ldap/ldap v3.2.4 -> v3.3.0 * github.com/go-redis/redis v8.6.0 -> v8.8.2 * github.com/go-sql-driver/mysql v1.5.0 -> v1.6.0 * github.com/go-swagger/go-swagger v0.26.1 -> v0.27.0 * github.com/lib/pq v1.9.0 -> v1.10.1 * github.com/mattn/go-sqlite3 v1.14.6 -> v1.14.7 * github.com/go-testfixtures/testfixtures v3.5.0 -> v3.6.0 * github.com/issue9/identicon v1.0.1 -> v1.2.0 * github.com/klauspost/compress v1.11.8 -> v1.12.1 * github.com/mgechev/revive v1.0.3 -> v1.0.6 * github.com/microcosm-cc/bluemonday v1.0.7 -> v1.0.8 * github.com/niklasfasching/go-org v1.4.0 -> v1.5.0 * github.com/olivere/elastic v7.0.22 -> v7.0.24 * github.com/pelletier/go-toml v1.8.1 -> v1.9.0 * github.com/prometheus/client_golang v1.9.0 -> v1.10.0 * github.com/xanzy/go-gitlab v0.44.0 -> v0.48.0 * github.com/yuin/goldmark v1.3.3 -> v1.3.5 * github.com/6543/go-version v1.2.4 -> v1.3.1 * do github.com/lib/pq v1.10.0 -> v1.10.1 again ...
84 lines
2.3 KiB
Go
Vendored
84 lines
2.3 KiB
Go
Vendored
// Copyright 2019+ Klaus Post. All rights reserved.
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// License information can be found in the LICENSE file.
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// Based on work by Yann Collet, released under BSD License.
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package zstd
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import (
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"errors"
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"runtime"
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)
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// DOption is an option for creating a decoder.
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type DOption func(*decoderOptions) error
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// options retains accumulated state of multiple options.
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type decoderOptions struct {
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lowMem bool
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concurrent int
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maxDecodedSize uint64
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dicts []dict
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}
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func (o *decoderOptions) setDefault() {
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*o = decoderOptions{
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// use less ram: true for now, but may change.
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lowMem: true,
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concurrent: runtime.GOMAXPROCS(0),
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}
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o.maxDecodedSize = 1 << 63
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}
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// WithDecoderLowmem will set whether to use a lower amount of memory,
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// but possibly have to allocate more while running.
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func WithDecoderLowmem(b bool) DOption {
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return func(o *decoderOptions) error { o.lowMem = b; return nil }
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}
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// WithDecoderConcurrency will set the concurrency,
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// meaning the maximum number of decoders to run concurrently.
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// The value supplied must be at least 1.
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// By default this will be set to GOMAXPROCS.
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func WithDecoderConcurrency(n int) DOption {
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return func(o *decoderOptions) error {
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if n <= 0 {
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return errors.New("concurrency must be at least 1")
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}
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o.concurrent = n
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return nil
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}
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}
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// WithDecoderMaxMemory allows to set a maximum decoded size for in-memory
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// non-streaming operations or maximum window size for streaming operations.
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// This can be used to control memory usage of potentially hostile content.
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// For streaming operations, the maximum window size is capped at 1<<30 bytes.
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// Maximum and default is 1 << 63 bytes.
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func WithDecoderMaxMemory(n uint64) DOption {
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return func(o *decoderOptions) error {
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if n == 0 {
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return errors.New("WithDecoderMaxMemory must be at least 1")
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}
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if n > 1<<63 {
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return errors.New("WithDecoderMaxmemory must be less than 1 << 63")
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}
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o.maxDecodedSize = n
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return nil
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}
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}
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// WithDecoderDicts allows to register one or more dictionaries for the decoder.
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// If several dictionaries with the same ID is provided the last one will be used.
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func WithDecoderDicts(dicts ...[]byte) DOption {
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return func(o *decoderOptions) error {
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for _, b := range dicts {
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d, err := loadDict(b)
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if err != nil {
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return err
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}
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o.dicts = append(o.dicts, *d)
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}
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return nil
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}
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}
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