gotosocial/vendor/github.com/minio/sha256-simd/cpuid.go
Dominik Süß 9d0df426da
[feature] S3 support (#674)
* feat: vendor minio client

* feat: introduce storage package with s3 support

* feat: serve s3 files directly

this saves a lot of bandwith as the files are fetched from the object
store directly

* fix: use explicit local storage in tests

* feat: integrate s3 storage with the main server

* fix: add s3 config to cli tests

* docs: explicitly set values in example config

also adds license header to the storage package

* fix: use better http status code on s3 redirect

HTTP 302 Found is the best fit, as it signifies that the resource
requested was found but not under its presumed URL

307/TemporaryRedirect would mean that this resource is usually located
here, not in this case

303/SeeOther indicates that the redirection does not link to the
requested resource but to another page

* refactor: use context in storage driver interface
2022-07-03 12:08:30 +02:00

120 lines
2.6 KiB
Go

// Minio Cloud Storage, (C) 2016 Minio, 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 sha256
// True when SIMD instructions are available.
var avx512 bool
var avx2 bool
var avx bool
var sse bool
var sse2 bool
var sse3 bool
var ssse3 bool
var sse41 bool
var sse42 bool
var popcnt bool
var sha bool
var armSha = haveArmSha()
func init() {
var _xsave bool
var _osxsave bool
var _avx bool
var _avx2 bool
var _avx512f bool
var _avx512dq bool
// var _avx512pf bool
// var _avx512er bool
// var _avx512cd bool
var _avx512bw bool
var _avx512vl bool
var _sseState bool
var _avxState bool
var _opmaskState bool
var _zmmHI256State bool
var _hi16ZmmState bool
mfi, _, _, _ := cpuid(0)
if mfi >= 1 {
_, _, c, d := cpuid(1)
sse = (d & (1 << 25)) != 0
sse2 = (d & (1 << 26)) != 0
sse3 = (c & (1 << 0)) != 0
ssse3 = (c & (1 << 9)) != 0
sse41 = (c & (1 << 19)) != 0
sse42 = (c & (1 << 20)) != 0
popcnt = (c & (1 << 23)) != 0
_xsave = (c & (1 << 26)) != 0
_osxsave = (c & (1 << 27)) != 0
_avx = (c & (1 << 28)) != 0
}
if mfi >= 7 {
_, b, _, _ := cpuid(7)
_avx2 = (b & (1 << 5)) != 0
_avx512f = (b & (1 << 16)) != 0
_avx512dq = (b & (1 << 17)) != 0
// _avx512pf = (b & (1 << 26)) != 0
// _avx512er = (b & (1 << 27)) != 0
// _avx512cd = (b & (1 << 28)) != 0
_avx512bw = (b & (1 << 30)) != 0
_avx512vl = (b & (1 << 31)) != 0
sha = (b & (1 << 29)) != 0
}
// Stop here if XSAVE unsupported or not enabled
if !_xsave || !_osxsave {
return
}
if _xsave && _osxsave {
a, _ := xgetbv(0)
_sseState = (a & (1 << 1)) != 0
_avxState = (a & (1 << 2)) != 0
_opmaskState = (a & (1 << 5)) != 0
_zmmHI256State = (a & (1 << 6)) != 0
_hi16ZmmState = (a & (1 << 7)) != 0
} else {
_sseState = true
}
// Very unlikely that OS would enable XSAVE and then disable SSE
if !_sseState {
sse = false
sse2 = false
sse3 = false
ssse3 = false
sse41 = false
sse42 = false
}
if _avxState {
avx = _avx
avx2 = _avx2
}
if _opmaskState && _zmmHI256State && _hi16ZmmState {
avx512 = (_avx512f &&
_avx512dq &&
_avx512bw &&
_avx512vl)
}
}