All files / lib/internal freelist.js

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'use strict';
 
const {
  ReflectApply,
} = primordials;
 
class FreeList {
  constructor(name, max, ctor) {
    this.name = name;
    this.ctor = ctor;
    this.max = max;
    this.list = [];
  }
 
  alloc() {
    return this.list.length > 0 ?
      this.list.pop() :
      ReflectApply(this.ctor, this, arguments);
  }
 
  free(obj) {
    if (this.list.length < this.max) {
      this.list.push(obj);
      return true;
    }
    return false;
  }
}
 
module.exports = FreeList;