| | |
| | | package shmqueue |
| | | |
| | | import ( |
| | | shm "basic.com/valib/goshm.git" |
| | | "context" |
| | | "fmt" |
| | | shm "basic.com/valib/goshm.git" |
| | | "reflect" |
| | | "runtime" |
| | | "sync/atomic" |
| | |
| | | ) |
| | | |
| | | const ( |
| | | TimePeriodPutOrGet = time.Duration(5)*time.Millisecond //ms |
| | | TimePeriodPutOrGet = time.Duration(5) * time.Millisecond //ms |
| | | ) |
| | | |
| | | //Element info |
| | |
| | | return ok, qua |
| | | } |
| | | |
| | | to := time.NewTimer(time.Duration(timeout) * time.Millisecond) |
| | | defer to.Stop() |
| | | |
| | | loopB: |
| | | for { |
| | | select { |
| | | case <-ctx.Done(): |
| | | return false, 0 |
| | | case <-to.C: |
| | | return false, 0 |
| | | default: |
| | | ok, qua = eqi.Put(val) |
| | | if ok { |
| | | break loopB |
| | | } |
| | | time.Sleep(TimePeriodPutOrGet) |
| | | } |
| | | count := timeout/int(TimePeriodPutOrGet) + 1 |
| | | for i := 0; i < count; i++ { |
| | | if ok, qua := eqi.Put(val); ok { |
| | | return ok, qua |
| | | } |
| | | return ok, qua |
| | | } |
| | | return false, 0 |
| | | |
| | | // to := time.NewTimer(time.Duration(timeout) * time.Millisecond) |
| | | // defer to.Stop() |
| | | |
| | | // loopB: |
| | | // for { |
| | | // select { |
| | | // case <-ctx.Done(): |
| | | // return false, 0 |
| | | // case <-to.C: |
| | | // return false, 0 |
| | | // default: |
| | | // ok, qua = eqi.Put(val) |
| | | // if ok { |
| | | // break loopB |
| | | // } |
| | | // time.Sleep(TimePeriodPutOrGet) |
| | | // } |
| | | // } |
| | | // return ok, qua |
| | | } |
| | | |
| | | // Get 单次获取,可能失败 |
| | |
| | | putNo := atomic.LoadUint32(&cache.putNo) |
| | | if getPosNew == getNo && getNo == putNo-eqi.Queue.capacity { |
| | | val := cache.value |
| | | cache.value = ElemInfo{PicId: 0, InfoId:0} |
| | | cache.value = ElemInfo{PicId: 0, InfoId: 0} |
| | | atomic.AddUint32(&cache.getNo, eqi.Queue.capacity) |
| | | return val, true, int(posCnt - 1) |
| | | } else { |
| | |
| | | if ok { |
| | | return val, ok, qua |
| | | } |
| | | |
| | | to := time.NewTimer(time.Duration(timeout) * time.Millisecond) |
| | | defer to.Stop() |
| | | |
| | | loopB: |
| | | for { |
| | | select { |
| | | case <-ctx.Done(): |
| | | return ElemInfo{}, false, 0 |
| | | case <-to.C: |
| | | return ElemInfo{}, false, 0 |
| | | default: |
| | | val, ok, qua = eqi.Get() |
| | | if ok { |
| | | break loopB |
| | | } |
| | | time.Sleep(TimePeriodPutOrGet) |
| | | } |
| | | count := timeout/int(TimePeriodPutOrGet) + 1 |
| | | for i := 0; i < count; i++ { |
| | | if val, ok, qua := eqi.Get(); ok { |
| | | return val, ok, qua |
| | | } |
| | | return val, ok, qua |
| | | } |
| | | return ElemInfo{}, false, 0 |
| | | |
| | | // to := time.NewTimer(time.Duration(timeout) * time.Millisecond) |
| | | // defer to.Stop() |
| | | |
| | | // loopB: |
| | | // for { |
| | | // select { |
| | | // case <-ctx.Done(): |
| | | // return ElemInfo{}, false, 0 |
| | | // case <-to.C: |
| | | // return ElemInfo{}, false, 0 |
| | | // default: |
| | | // val, ok, qua = eqi.Get() |
| | | // if ok { |
| | | // break loopB |
| | | // } |
| | | // time.Sleep(TimePeriodPutOrGet) |
| | | // } |
| | | // } |
| | | // return val, ok, qua |
| | | } |
| | | |
| | | // round 到最近的2的倍数 |