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  1. Proceedings of the 14th international conference on Architectural support for programming languages and operating systems (ASPLOS XIV)
  2. Leak pruning
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An evaluation of the TRIPS computer system
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Complete information flow tracking from the gates up
Maximum benefit from a minimal HTM
Mixed-mode multicore reliability
PowerNap: eliminating server idle power
Commutativity analysis for software parallelization: letting program transformations see the big picture
Leak pruning
Phantom-BTB: a virtualized branch target buffer design
Saving the Planet with Systems Research: Conference Keynote
Architectural implications of nanoscale integrated sensing and computing
ASSURE: automatic software self-healing using rescue points
DMP: deterministic shared memory multiprocessing
RapidMRC: approximating L2 miss rate curves on commodity systems for online optimizations
Early experience with a commercial hardware transactional memory implementation
ISOLATOR: dynamically ensuring isolation in comcurrent programs
Gordon: using flash memory to build fast, power-efficient clusters for data-intensive applications
Accelerating critical section execution with asymmetric multi-core architectures
Dynamic prediction of collection yield for managed runtimes
StreamRay: a stream filtering architecture for coherent ray tracing
Recovery domains: an organizing principle for recoverable operating systems
Kendo: efficient deterministic multithreading in software
Per-thread cycle accounting in SMT processors
Efficient online validation with delta execution
DFTL: a flash translation layer employing demand-based selective caching of page-level address mappings
Producing wrong data without doing anything obviously wrong!
TwinDrivers: semi-automatic derivation of fast and safe hypervisor network drivers from guest OS drivers
Architectural support for SWAR text processing with parallel bit streams: the inductive doubling principle
Anomaly-based bug prediction, isolation, and validation: an automated approach for software debugging

Leak pruning

Content Provider ACM Digital Library
Author McKinley, Kathryn S. Bond, Michael D.
Abstract Managed languages improve programmer productivity with type safety and garbage collection, which eliminate memory errors such as dangling pointers, double frees, and buffer overflows. However, because garbage collection uses reachability to over-approximate live objects, programs may still leak memory if programmers forget to eliminate the last reference to an object that will not be used again. Leaks slow programs by increasing collector workload and frequency. Growing leaks eventually crash programs. This paper introduces leak pruning, which keeps programs running by predicting and reclaiming leaked objects at run time. It predicts dead objects and reclaims them based on observing data structure usage patterns. Leak pruning preserves semantics because it waits for heap exhaustion before reclaiming objects and poisons references to objects it reclaims. If the program later tries to access a poisoned reference, the virtual machine (VM) throws an error. We show leak pruning has low overhead in a Java VM and evaluate it on 10 leaking programs. Leak pruning does not help two programs, executes five substantial programs 1.6-81X longer, and executes three programs, including a leak in Eclipse, for at least 24 hours. In the worst case, leak pruning defers fatal errors. In the best case, it keeps leaky programs running with preserved semantics and consistent throughput.
Starting Page 277
Ending Page 288
Page Count 12
File Format PDF
ISBN 9781605584065
DOI 10.1145/1508244.1508277
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2009-03-07
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Garbage collection Leak tolerance Managed languages Memory leaks
Content Type Text
Resource Type Article
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