github.com/matrixorigin/matrixone@v1.2.0/pkg/common/malloc/flush.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package malloc
    16  
    17  import "time"
    18  
    19  func init() {
    20  	go func() {
    21  		lastNumAllocs := make([]int64, numShards)
    22  		for range time.NewTicker(time.Second * 37).C {
    23  			for i := 0; i < numShards; i++ {
    24  				numAllocs := shards[i].numAlloc.Load()
    25  				if numAllocs == lastNumAllocs[i] {
    26  					// not active, flush
    27  					shards[i].flush()
    28  				}
    29  				lastNumAllocs[i] = numAllocs
    30  			}
    31  		}
    32  	}()
    33  }
    34  
    35  func (s *Shard) flush() {
    36  	for _, ch := range s.pools {
    37  	loop:
    38  		for {
    39  			select {
    40  			case <-ch:
    41  			default:
    42  				break loop
    43  			}
    44  		}
    45  	}
    46  }