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poolhandler.go
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poolhandler.go
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// Copyright 2021 Matrix Origin
//
// 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 tasks
import (
"context"
"sync"
"github.com/matrixorigin/matrixone/pkg/logutil"
iops "github.com/matrixorigin/matrixone/pkg/vm/engine/tae/tasks/ops/base"
ops "github.com/matrixorigin/matrixone/pkg/vm/engine/tae/tasks/worker"
"github.com/panjf2000/ants/v2"
)
var (
poolHandlerName = "PoolHandler"
)
type poolHandler struct {
BaseTaskHandler
opExec ops.OpExecFunc
pool *ants.Pool
wg *sync.WaitGroup
}
func NewPoolHandler(ctx context.Context, num int) *poolHandler {
pool, err := ants.NewPool(num)
if err != nil {
panic(err)
}
h := &poolHandler{
BaseTaskHandler: *NewBaseEventHandler(ctx, poolHandlerName),
pool: pool,
wg: &sync.WaitGroup{},
}
h.opExec = h.ExecFunc
h.ExecFunc = h.doHandle
return h
}
func (h *poolHandler) Execute(task Task) {
h.opExec(task)
}
func (h *poolHandler) doHandle(op iops.IOp) {
closure := func(o iops.IOp, wg *sync.WaitGroup) func() {
return func() {
h.opExec(o)
wg.Done()
}
}
h.wg.Add(1)
err := h.pool.Submit(closure(op, h.wg))
if err != nil {
logutil.Warnf("%v", err)
op.SetError(err)
h.wg.Done()
}
}
func (h *poolHandler) Close() error {
h.pool.Release()
h.BaseTaskHandler.Close()
h.wg.Wait()
return nil
}