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f9aa239973
Bonus change to use channel to serialize triggers, instead of using atomic variables. More efficient mechanism for synchronization. Co-authored-by: Nitish Tiwari <nitish@minio.io>
76 lines
1.9 KiB
Go
76 lines
1.9 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2019, 2020 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"sync/atomic"
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)
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// CacheDiskStats represents cache disk statistics
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// such as current disk usage and available.
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type CacheDiskStats struct {
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// indicates if usage is high or low, if high value is '1', if low its '0'
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UsageState int32
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// indicates the current usage percentage of this cache disk
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UsagePercent uint64
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Dir string
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}
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// CacheStats - represents bytes served from cache,
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// cache hits and cache misses.
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type CacheStats struct {
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BytesServed uint64
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Hits uint64
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Misses uint64
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GetDiskStats func() []CacheDiskStats
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}
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// Increase total bytes served from cache
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func (s *CacheStats) incBytesServed(n int64) {
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atomic.AddUint64(&s.BytesServed, uint64(n))
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}
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// Increase cache hit by 1
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func (s *CacheStats) incHit() {
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atomic.AddUint64(&s.Hits, 1)
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}
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// Increase cache miss by 1
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func (s *CacheStats) incMiss() {
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atomic.AddUint64(&s.Misses, 1)
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}
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// Get total bytes served
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func (s *CacheStats) getBytesServed() uint64 {
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return atomic.LoadUint64(&s.BytesServed)
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}
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// Get total cache hits
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func (s *CacheStats) getHits() uint64 {
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return atomic.LoadUint64(&s.Hits)
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}
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// Get total cache misses
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func (s *CacheStats) getMisses() uint64 {
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return atomic.LoadUint64(&s.Misses)
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}
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// Prepare new CacheStats structure
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func newCacheStats() *CacheStats {
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return &CacheStats{}
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}
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