diff options
Diffstat (limited to 'vendor/github.com/dolthub/maphash')
| -rw-r--r-- | vendor/github.com/dolthub/maphash/.gitignore | 2 | ||||
| -rw-r--r-- | vendor/github.com/dolthub/maphash/LICENSE | 201 | ||||
| -rw-r--r-- | vendor/github.com/dolthub/maphash/README.md | 4 | ||||
| -rw-r--r-- | vendor/github.com/dolthub/maphash/hasher.go | 48 | ||||
| -rw-r--r-- | vendor/github.com/dolthub/maphash/runtime.go | 111 |
5 files changed, 0 insertions, 366 deletions
diff --git a/vendor/github.com/dolthub/maphash/.gitignore b/vendor/github.com/dolthub/maphash/.gitignore deleted file mode 100644 index 977a7cadf..000000000 --- a/vendor/github.com/dolthub/maphash/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -*.idea -*.test
\ No newline at end of file diff --git a/vendor/github.com/dolthub/maphash/LICENSE b/vendor/github.com/dolthub/maphash/LICENSE deleted file mode 100644 index 261eeb9e9..000000000 --- a/vendor/github.com/dolthub/maphash/LICENSE +++ /dev/null @@ -1,201 +0,0 @@ - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. Definitions. - - "License" shall mean the terms and conditions for use, reproduction, - and distribution as defined by Sections 1 through 9 of this document. - - "Licensor" shall mean the copyright owner or entity authorized by - the copyright owner that is granting the License. - - "Legal Entity" shall mean the union of the acting entity and all - other entities that control, are controlled by, or are under common - control with that entity. For the purposes of this definition, - "control" means (i) the power, direct or indirect, to cause the - direction or management of such entity, whether by contract or - otherwise, or (ii) ownership of fifty percent (50%) or more of the - outstanding shares, or (iii) beneficial ownership of such entity. - - "You" (or "Your") shall mean an individual or Legal Entity - exercising permissions granted by this License. - - "Source" form shall mean the preferred form for making modifications, - including but not limited to software source code, documentation - source, and configuration files. - - "Object" form shall mean any form resulting from mechanical - transformation or translation of a Source form, including but - not limited to compiled object code, generated documentation, - and conversions to other media types. - - "Work" shall mean the work of authorship, whether in Source or - Object form, made available under the License, as indicated by a - copyright notice that is included in or attached to the work - (an example is provided in the Appendix below). - - "Derivative Works" shall mean any work, whether in Source or Object - form, that is based on (or derived from) the Work and for which the - editorial revisions, annotations, elaborations, or other modifications - represent, as a whole, an original work of authorship. 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In no event and under no legal theory, - whether in tort (including negligence), contract, or otherwise, - unless required by applicable law (such as deliberate and grossly - negligent acts) or agreed to in writing, shall any Contributor be - liable to You for damages, including any direct, indirect, special, - incidental, or consequential damages of any character arising as a - result of this License or out of the use or inability to use the - Work (including but not limited to damages for loss of goodwill, - work stoppage, computer failure or malfunction, or any and all - other commercial damages or losses), even if such Contributor - has been advised of the possibility of such damages. - - 9. Accepting Warranty or Additional Liability. While redistributing - the Work or Derivative Works thereof, You may choose to offer, - and charge a fee for, acceptance of support, warranty, indemnity, - or other liability obligations and/or rights consistent with this - License. However, in accepting such obligations, You may act only - on Your own behalf and on Your sole responsibility, not on behalf - of any other Contributor, and only if You agree to indemnify, - defend, and hold each Contributor harmless for any liability - incurred by, or claims asserted against, such Contributor by reason - of your accepting any such warranty or additional liability. - - END OF TERMS AND CONDITIONS - - APPENDIX: How to apply the Apache License to your work. - - To apply the Apache License to your work, attach the following - boilerplate notice, with the fields enclosed by brackets "[]" - replaced with your own identifying information. (Don't include - the brackets!) The text should be enclosed in the appropriate - comment syntax for the file format. We also recommend that a - file or class name and description of purpose be included on the - same "printed page" as the copyright notice for easier - identification within third-party archives. - - Copyright [yyyy] [name of copyright owner] - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. diff --git a/vendor/github.com/dolthub/maphash/README.md b/vendor/github.com/dolthub/maphash/README.md deleted file mode 100644 index d91530f99..000000000 --- a/vendor/github.com/dolthub/maphash/README.md +++ /dev/null @@ -1,4 +0,0 @@ -# maphash - -Hash any `comparable` type using Golang's fast runtime hash. -Uses [AES](https://en.wikipedia.org/wiki/AES_instruction_set) instructions when available.
\ No newline at end of file diff --git a/vendor/github.com/dolthub/maphash/hasher.go b/vendor/github.com/dolthub/maphash/hasher.go deleted file mode 100644 index ef53596a2..000000000 --- a/vendor/github.com/dolthub/maphash/hasher.go +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2022 Dolthub, Inc. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package maphash - -import "unsafe" - -// Hasher hashes values of type K. -// Uses runtime AES-based hashing. -type Hasher[K comparable] struct { - hash hashfn - seed uintptr -} - -// NewHasher creates a new Hasher[K] with a random seed. -func NewHasher[K comparable]() Hasher[K] { - return Hasher[K]{ - hash: getRuntimeHasher[K](), - seed: newHashSeed(), - } -} - -// NewSeed returns a copy of |h| with a new hash seed. -func NewSeed[K comparable](h Hasher[K]) Hasher[K] { - return Hasher[K]{ - hash: h.hash, - seed: newHashSeed(), - } -} - -// Hash hashes |key|. -func (h Hasher[K]) Hash(key K) uint64 { - // promise to the compiler that pointer - // |p| does not escape the stack. - p := noescape(unsafe.Pointer(&key)) - return uint64(h.hash(p, h.seed)) -} diff --git a/vendor/github.com/dolthub/maphash/runtime.go b/vendor/github.com/dolthub/maphash/runtime.go deleted file mode 100644 index 29cd6a8ed..000000000 --- a/vendor/github.com/dolthub/maphash/runtime.go +++ /dev/null @@ -1,111 +0,0 @@ -// Copyright 2022 Dolthub, Inc. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// This file incorporates work covered by the following copyright and -// permission notice: -// -// Copyright 2022 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build go1.18 || go1.19 -// +build go1.18 go1.19 - -package maphash - -import ( - "math/rand" - "unsafe" -) - -type hashfn func(unsafe.Pointer, uintptr) uintptr - -func getRuntimeHasher[K comparable]() (h hashfn) { - a := any(make(map[K]struct{})) - i := (*mapiface)(unsafe.Pointer(&a)) - h = i.typ.hasher - return -} - -func newHashSeed() uintptr { - return uintptr(rand.Int()) -} - -// noescape hides a pointer from escape analysis. It is the identity function -// but escape analysis doesn't think the output depends on the input. -// noescape is inlined and currently compiles down to zero instructions. -// USE CAREFULLY! -// This was copied from the runtime (via pkg "strings"); see issues 23382 and 7921. -// -//go:nosplit -//go:nocheckptr -func noescape(p unsafe.Pointer) unsafe.Pointer { - x := uintptr(p) - return unsafe.Pointer(x ^ 0) -} - -type mapiface struct { - typ *maptype - val *hmap -} - -// go/src/runtime/type.go -type maptype struct { - typ _type - key *_type - elem *_type - bucket *_type - // function for hashing keys (ptr to key, seed) -> hash - hasher func(unsafe.Pointer, uintptr) uintptr - keysize uint8 - elemsize uint8 - bucketsize uint16 - flags uint32 -} - -// go/src/runtime/map.go -type hmap struct { - count int - flags uint8 - B uint8 - noverflow uint16 - // hash seed - hash0 uint32 - buckets unsafe.Pointer - oldbuckets unsafe.Pointer - nevacuate uintptr - // true type is *mapextra - // but we don't need this data - extra unsafe.Pointer -} - -// go/src/runtime/type.go -type tflag uint8 -type nameOff int32 -type typeOff int32 - -// go/src/runtime/type.go -type _type struct { - size uintptr - ptrdata uintptr - hash uint32 - tflag tflag - align uint8 - fieldAlign uint8 - kind uint8 - equal func(unsafe.Pointer, unsafe.Pointer) bool - gcdata *byte - str nameOff - ptrToThis typeOff -} |