,Automatic recovery from resource exhaustion exceptions by collecting leaked resources

来源 :浙江大学学报(英文版)(C辑:计算机与电子) | 被引量 : 0次 | 上传用户:yqhbyctu
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Despite the availability of garbage collectors, programmers must manually manage non-memory fi nite system resources such as fi le descriptors. Resource leaks can gradually consume all available resources and cause programs to raise resource exhaustion exceptions. However, programmers commonly provide no effective recovery approach for resource exhaustion exceptions, which often causes programs to halt without completing their tasks. In this paper, we propose to automatically recover programs from resource exhaustion exceptions caused by resource leaks. We transform programs to catch resource exhaustion exceptions, collect leaked resources, and then retry the failure code. A resource collector is designed to identify leaked resources and safely release them. We implement our approach for Java programs. Experimental results show that our approach can successfully handle resource exhaustion exceptions caused by reported resource leaks and allow programs to complete their tasks with an average execution time increase of 2.52%and negligible bytecode size increase.
其他文献
本文利用218份小麦品种(系),2012、2013连续两年观测田间抗寒性。小麦苗期利用微电脑人工气候培养箱模拟低温培养,测定218份小麦品种(系)的苗高、叶数、地上部干重、地上部含水率、根数、主根长、根干重、根含水率、根冠比等9项形态指标,及49份小麦品种(系)的电导率值、脯氨酸含量、丙二醛含量、叶绿素含量、可溶性糖含量等5项生理生化指标。采用胁迫系数法和聚类分析进行抗寒性综合评价。用81对SSR
新疆棉花生产在中国棉业发展中具有举足轻重的地位。提高单产、增加总产是实现棉花增效,确保棉花生产稳定发展的主要途径。棉花根系生长与功能直接或间接地影响着地上部生长以及整个植株的生存和发展,研究高产棉花根系生长特征,提出棉花高产的根系形态、生理指标,对构建棉花高产高效栽培技术体系具有重要意义。本文从膜下滴灌棉花入手,通过定向培育高产棉田(皮棉3500kg·hm-2),研究膜下滴灌高产条件下棉花根系在土
小麦是世界上主要的粮食作物之一,面粉颜色是衡量小麦品质的重要指标。小麦籽粒中过氧化物酶(Peroxidase,POD)活性是面粉及面制品在加工,储藏过程中发生褐变和被漂白的重要原因。因此,探究POD基因的特性已成为小麦品质改良的分子标记辅助育种的重要目标。本研究以黄淮麦区材料151份与北部冬麦区82份品种为材料,利用90K iSelect芯片对小麦品种籽粒POD活性基因进行GWAS;并利用同源克隆
该研究主要探讨了保水剂和抗旱剂一号对小麦的增产效应,运用田间统计和数理统计方法,较为系统地研究了不同肥力水平、不同灌溉量、不同施用方法在不同降水类型区对小麦产量及
Cognitive radio is an effective technology to alleviate the spectrum resource scarcity problem by oppor-tunistically allocating the spare spectrum to unauthoriz
酒店的景观规划设计与酒店经营管理具有一定的内在联系,对于度假酒店而言,环境景观的规划设计是酒店立足的根本,占据有利的地理环境仅仅是度假酒店的前提条件,而要获取更高的
一九八四年十一月二十二日,《新华日报》和《南京日报》都在第一版刊登了省大学生作文竞赛举行授奖大会的消息。稿件出自同一位作者之手,但两报对稿件的编删和标题制作上显
该研究以甘兰型油菜(B.napus)"双低"品种湘油13号、芥菜型油菜(B.juncea)红叶芥和白菜型油菜(B.camestris)浏阳白为材料,对其基因转化受体--下胚轴和子叶的再生频率的影响因
We present a complete framework for synthesizing style-preserving 2D cartoons by leaing from traditional Chinese cartoons.In contrast to reusing-based approache