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author | 2022-07-03 12:08:30 +0200 | |
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committer | 2022-07-03 12:08:30 +0200 | |
commit | 9d0df426da59275f7aeaf46004befe5a778da274 (patch) | |
tree | 82c6bb98597e44c4f70b731336dcdfc839412c1c /vendor/github.com/minio/sha256-simd/cpuid.go | |
parent | [chore] Re-enable source tar but name it clearly as source (#683) (diff) | |
download | gotosocial-9d0df426da59275f7aeaf46004befe5a778da274.tar.xz |
[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
Diffstat (limited to 'vendor/github.com/minio/sha256-simd/cpuid.go')
-rw-r--r-- | vendor/github.com/minio/sha256-simd/cpuid.go | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/vendor/github.com/minio/sha256-simd/cpuid.go b/vendor/github.com/minio/sha256-simd/cpuid.go new file mode 100644 index 000000000..878ad4638 --- /dev/null +++ b/vendor/github.com/minio/sha256-simd/cpuid.go @@ -0,0 +1,119 @@ +// 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) + } +} |