Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation最新文献_第3页

PMAF: an algebraic framework for static analysis of probabilistic programs PMAF:一个用于概率程序静态分析的代数框架

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2018-04-15 DOI: 10.1145/3192366.3192408

Di Wang, Jan Hoffmann, T. Reps

{"title":"PMAF: an algebraic framework for static analysis of probabilistic programs","authors":"Di Wang, Jan Hoffmann, T. Reps","doi":"10.1145/3192366.3192408","DOIUrl":"https://doi.org/10.1145/3192366.3192408","url":null,"abstract":"Automatically establishing that a probabilistic program satisfies some property ϕ is a challenging problem. While a sampling-based approach—which involves running the program repeatedly—can suggest that ϕ holds, to establish that the program satisfies ϕ, analysis techniques must be used. Despite recent successes, probabilistic static analyses are still more difficult to design and implement than their deterministic counterparts. This paper presents a framework, called PMAF, for designing, implementing, and proving the correctness of static analyses of probabilistic programs with challenging features such as recursion, unstructured control-flow, divergence, nondeterminism, and continuous distributions. PMAF introduces pre-Markov algebras to factor out common parts of different analyses. To perform interprocedural analysis and to create procedure summaries, PMAF extends ideas from non-probabilistic interprocedural dataflow analysis to the probabilistic setting. One novelty is that PMAF is based on a semantics formulated in terms of a control-flow hyper-graph for each procedure, rather than a standard control-flow graph. To evaluate its effectiveness, PMAF has been used to reformulate and implement existing intraprocedural analyses for Bayesian-inference and the Markov decision problem, by creating corresponding interprocedural analyses. Additionally, PMAF has been used to implement a new interprocedural linear expectation-invariant analysis. Experiments with benchmark programs for the three analyses demonstrate that the approach is practical.","PeriodicalId":20583,"journal":{"name":"Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73257417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

Static serializability analysis for causal consistency 因果一致性的静态序列化性分析

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2018-04-15 DOI: 10.1145/3192366.3192415

Lucas Brutschy, Dimitar Dimitrov, Peter Müller, Martin T. Vechev

{"title":"Static serializability analysis for causal consistency","authors":"Lucas Brutschy, Dimitar Dimitrov, Peter Müller, Martin T. Vechev","doi":"10.1145/3192366.3192415","DOIUrl":"https://doi.org/10.1145/3192366.3192415","url":null,"abstract":"Many distributed databases provide only weak consistency guarantees to reduce synchronization overhead and remain available under network partitions. However, this leads to behaviors not possible under stronger guarantees. Such behaviors can easily defy programmer intuition and lead to errors that are notoriously hard to detect. In this paper, we propose a static analysis for detecting non-serializable behaviors of applications running on top of causally-consistent databases. Our technique is based on a novel, local serializability criterion and combines a generalization of graph-based techniques from the database literature with another, complementary analysis technique that encodes our serializability criterion into first-order logic formulas to be checked by an SMT solver. This analysis is more expensive yet more precise and produces concrete counter-examples. We implemented our methods and evaluated them on a number of applications from two different domains: cloud-backed mobile applications and clients of a distributed database. Our experiments demonstrate that our analysis is able to detect harmful serializability violations while producing only a small number of false alarms.","PeriodicalId":20583,"journal":{"name":"Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75237694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27

CUBA: interprocedural Context-UnBounded Analysis of concurrent programs 并发程序的程序间上下文无界分析

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2018-04-13 DOI: 10.1145/3192366.3192419

Peizun Liu, T. Wahl

{"title":"CUBA: interprocedural Context-UnBounded Analysis of concurrent programs","authors":"Peizun Liu, T. Wahl","doi":"10.1145/3192366.3192419","DOIUrl":"https://doi.org/10.1145/3192366.3192419","url":null,"abstract":"A classical result by Ramalingam about synchronization-sensitive interprocedural program analysis implies that reachability for concurrent threads running recursive procedures is undecidable. A technique proposed by Qadeer and Rehof, to bound the number of context switches allowed between the threads, leads to an incomplete solution that is, however, believed to catch “most bugs” in practice. The question whether the technique can also prove the absence of bugs at least in some cases has remained largely open. In this paper we introduce a broad verification methodology for resource-parameterized programs that observes how changes to the resource parameter affect the behavior of the program. Applied to the context-unbounded analysis problem (CUBA), the methodology results in partial verification techniques for procedural concurrent programs. Our solutions may not terminate, but are able to both refute and prove context-unbounded safety for concurrent recursive threads. We demonstrate the effectiveness of our method using a variety of examples, the safe of which cannot be proved safe by earlier, context-bounded methods.","PeriodicalId":20583,"journal":{"name":"Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79526957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

iReplayer: in-situ and identical record-and-replay for multithreaded applications iReplayer:多线程应用程序的原位和相同的记录和重播

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2018-04-04 DOI: 10.1145/3192366.3192380

Hongyu Liu, Sam Silvestro, Wei Wang, Chen Tian, Tongping Liu

{"title":"iReplayer: in-situ and identical record-and-replay for multithreaded applications","authors":"Hongyu Liu, Sam Silvestro, Wei Wang, Chen Tian, Tongping Liu","doi":"10.1145/3192366.3192380","DOIUrl":"https://doi.org/10.1145/3192366.3192380","url":null,"abstract":"Reproducing executions of multithreaded programs is very challenging due to many intrinsic and external non-deterministic factors. Existing RnR systems achieve significant progress in terms of performance overhead, but none targets the in-situ setting, in which replay occurs within the same process as the recording process. Also, most existing work cannot achieve identical replay, which may prevent the reproduction of some errors. This paper presents iReplayer, which aims to identically replay multithreaded programs in the original process (under the \"in-situ\" setting). The novel in-situ and identical replay of iReplayer makes it more likely to reproduce errors, and allows it to directly employ debugging mechanisms (e.g. watchpoints) to aid failure diagnosis. Currently, iReplayer only incurs 3% performance overhead on average, which allows it to be always enabled in the production environment. iReplayer enables a range of possibilities, and this paper presents three examples: two automatic tools for detecting buffer overflows and use-after-free bugs, and one interactive debugging tool that is integrated with GDB.","PeriodicalId":20583,"journal":{"name":"Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86809499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

A general path-based representation for predicting program properties 用于预测程序属性的一般基于路径的表示

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2018-03-26 DOI: 10.1145/3192366.3192412

Uri Alon, Meital Zilberstein, Omer Levy, Eran Yahav

{"title":"A general path-based representation for predicting program properties","authors":"Uri Alon, Meital Zilberstein, Omer Levy, Eran Yahav","doi":"10.1145/3192366.3192412","DOIUrl":"https://doi.org/10.1145/3192366.3192412","url":null,"abstract":"Predicting program properties such as names or expression types has a wide range of applications. It can ease the task of programming, and increase programmer productivity. A major challenge when learning from programs is how to represent programs in a way that facilitates effective learning. We present a general path-based representation for learning from programs. Our representation is purely syntactic and extracted automatically. The main idea is to represent a program using paths in its abstract syntax tree (AST). This allows a learning model to leverage the structured nature of code rather than treating it as a flat sequence of tokens. We show that this representation is general and can: (i) cover different prediction tasks, (ii) drive different learning algorithms (for both generative and discriminative models), and (iii) work across different programming languages. We evaluate our approach on the tasks of predicting variable names, method names, and full types. We use our representation to drive both CRF-based and word2vec-based learning, for programs of four languages: JavaScript, Java, Python and C#. Our evaluation shows that our approach obtains better results than task-specific handcrafted representations across different tasks and programming languages.","PeriodicalId":20583,"journal":{"name":"Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89262926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 191

Search, align, and repair: data-driven feedback generation for introductory programming exercises 搜索、对齐和修复:用于介绍性编程练习的数据驱动反馈生成

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2017-11-20 DOI: 10.1145/3192366.3192384

Ke Wang, Rishabh Singh, Z. Su

引用次数: 81

Active learning of points-to specifications 主动学习从点到规范

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2017-11-09 DOI: 10.1145/3192366.3192383

O. Bastani, Rahul Sharma, A. Aiken, Percy Liang

引用次数: 24

The semantics of transactions and weak memory in x86, Power, ARM, and C++ x86、Power、ARM和c++中事务和弱内存的语义

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2017-10-13 DOI: 10.1145/3192366.3192373

Nathan Chong, Tyler Sorensen, John Wickerson

引用次数: 26

Finding root causes of floating point error 查找浮点错误的根本原因

Proceedings of the 39th ACM SIGPLAN Conference on Programming Language Design and Implementation Pub Date : 2017-05-29 DOI: 10.1145/3192366.3192411

Alex Sanchez-Stern, P. Panchekha, Sorin Lerner, Zachary Tatlock

引用次数: 63