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Merge pull request #63 from prometheus/fabxc-patch-1 

Add dgryski/go-tsz LICENSE to header
pull/5805/head
Fabian Reinartz 2017-05-02 11:27:52 +02:00 committed by GitHub
parent 085991c9da 87676f4a26
commit 7778e92c78
1 changed files with 29 additions and 4 deletions
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33
chunks/xor.go
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@ -11,6 +11,35 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
// The code in this file was largely written by Damian Gryski and published
// under the license below. It was modified to accomodate reading from byte
// slice without modifying the underlying bytes, which would panick when reading
// from mmaped read-only byte slices.
// Copyright (c) 2015,2016 Damian Gryski <damian@gryski.com>
// All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package chunks package chunks
import ( import (
@ -21,10 +50,6 @@ import (
) )
// XORChunk holds XOR encoded sample data. // XORChunk holds XOR encoded sample data.
//
// The implementation is largely by Damian Gryski (https://github.com/dgryski/go-tsz) and
// was adjusted to accomodate non-destructive/non-writing reads from byte slices and to
// fit timestamp ranges more common in Prometheus.
type XORChunk struct { type XORChunk struct {
b *bstream b *bstream
num uint16 num uint16