Method _updateHitRate

packages/core/src/Utils/Pool/Pool.ts:267–274

* 更新命中率

()

     * 更新命中率
     */
    private _updateHitRate(): void {
        if (this._stats.totalObtained === 0) {
            this._stats.hitRate = 0;
        } else {
            const hits = this._stats.totalObtained - this._stats.totalCreated;
            this._stats.hitRate = hits / this._stats.totalObtained;
        }
    }

    /**
     * 更新内存使用估算