MemoryEfficientHardReal-TimeGarbageCollectionbyTobiasRitzau.pdf资源-CSDN文库

需积分: 10 54 浏览量 2021-04-17 17:33:07 上传评论收藏 1.15MB PDF 举报

资源推荐

资源详情

资源评论

Link

oping Studies in Science and Technology

Dissertation No. 828

Memory Efﬁcient

Hard Real-Time Garbage Collection

Tobias Ritzau

Department of Computer and Information Science

Link

oping University, SE-581 83 Link

oping, Sweden

Link

oping 2003

Abstract

As the development of hardware progresses, computers are expected to

solve increasingly complex problems. However, solving more complex

problems requires more complex software. To be able to develop these

software systems, new programming languages with new features and

higher abstraction levels are introduced. These features are designed to

ease development, but sometimes they also make the runtime behavior

unpredictable. Such features can not be used in real-time systems.

A feature that traditionally has been unpredictable is garbage collec-

tion. Moreover, even though a garbage collector frees unused memory,

almost all such methods require large amounts of additional memory. Gar-

bage collection relieves developers of the responsibility to reclaim memory

that is no longer used by the application. This is very tedious and error

prone if done manually. Since garbage collection increases productivity

and decreases programming errors, developers ﬁnd it attractive, also in

the real-time domain.

This thesis presents a predictable garbage collection method, real-time

reference counting, that increases memory efﬁciency by about 50 % com-

pared to the most memory efﬁcient previously presented predictable gar-

bage collector.

To increase performance, an optimization technique called object own-

ership that eliminates redundant reference count updates is presented. Ob-

ject ownership is designed for reference counters, but can also be used to

increase the performance of other incremental garbage collectors.

Finally, a static garbage collector is presented. The static garbage collec-

tor can allocate objects statically or on the runtime stack, and insert explicit

instructions to reclaim memory allocated on the heap. It makes it possi-

ble to eliminate the need for runtime garbage collection for a large class of

Java applications. The static garbage collection method can also be used

to remove costly synchronization instructions. Competing static garbage

collection methods with reasonable analysis time are restricted to stack al-

location, and thus handle a smaller class of applications.

— I don’t know half of you half as well as I should like;

and I like less than half of you half as well as you deserve.

Bilbo Baggins

Acknowledgments

Jag vill b

orja med att tacka min handledare Peter Fritzson f

or handledning,

od och f

or det f

ortroende du har visat mig. Jag vill ocks

a tacka min bi-

handlerade Roger Henriksson f

or alla givande diskussioner vi har haft och

Boris Magnusson f

or inspiration och en arbetsplats.

Ett varmt tack g

ar ocks

a till hela PELAB och till programvarugruppen

vid LTH f

or den otroligt trevliga och inspirerande forskningsmilj

on jag har

att vara en del av. Ett speciellt tack vill jag sk

anka till Bodil Mattson-

Kihlstr

om f

or att du har h

allit reda p

a mig.

Jag vill ocks

a tacka G

osta Sundberg, Mathias Hedenborg och Ulf Ced-

erling vid V

axj

o universitet. Det var ni som ﬁck mig att fundera p

a forskar-

studier och de var ni som gjorde det m

ojligt f

or mig att p

orja dem. Ett

extra varmt tack vill jag ge min v

an och arbetskamrat Jesper Andersson.

Hoppas att jag har hj

alpt dig lika mycket som du har hj

alpt mig.

Dessutom vill jag tacka Peter Fritzson, Christoph Kessler och Roger

Henriksson f

or de kommentarer och f

orb

attringar ni har bidragit med efter

att ha l

ast avhandlingen.

Jag vill ocks

a passa p

a att tacka alla de l

arare som under

aren har f

att

mig att vilja l

ara mig mer. Speciellt vill jag tacka Leif Svensson och Bengt-

oran Magnusson vid Dalslundsskolan; Tomas Tr

apja, Klas Nilsson och

Bert Konsberg vid Pauliskolan; samt Ulf S

oderberg vid V

axj

o universitet.

Sist och fr

amst vill jag tacka mamma, pappa, Anja, Annette, Atlas,

Medes, Musen, Bamse och ljusstr

alarna Elsa och Axel f

or att ni ﬁnns, f

att ni st

ar ut med mig och f

or att ni gjort mig till den jag

ar. Och ett sista

varmt tack sk

anker jag till alla mina v

anner.

Frid och lycka!

Tobias Ritzau

Lund, den 22 april 2003

This work has been support by the ECSEL research school, the EC funded JOSES

and HIDOORS projects, the ESA funded AERO project, and V¨axj¨o University.

剩余201页未读，继续阅读

评论收藏

内容反馈

andyj2ee

粉丝: 0
资源: 1

Memory Efficient Hard Real-Time Garbage Collection by Tobias Rit...

最新资源

Memory Efficient Hard Real-Time Garbage Collection by Tobias Rit...

官方下载jdk-8u261-linux-x64.tar.gz.zip

jdk-8u131-windows-i586_8.0.1310.11.rar

jdk-8u321-linux-x64.tar.gz

hotspot-virtual-machine-garbage-collection-tuning-guide.pdf

jdk-8u151-linux-x64.tar.gz 【官方jdk1.8 linux版】

jdk-8u241-linux-x64.tar.gz

最新版linux jdk-8u311-linux-x64.tar_2.gz

jdk-8u121-linux-x64.tar.zip

jdk-15.0.2_linux-x64_bin.tar.gz

jdk-8u181-linux-x64.tar.gz

jdk-7u79-linux-x64.tar.gz.zip

jdk-8u231-linux-x64_tar_gz.zip

最新版linux jdk-11.0.10_linux-x64_bin.tar.gz

openjdk-11+28_linux-x64_bin.tar.gz

jdk-12.0.2_linux-x64_bin.tar.gz官网下载

最新版linux jdk-15.0.1_linux-x64_bin.tar.gz

最新版linux jdk-11.0.8_linux-x64_bin.tar.gz

The-Java-Garbage-Collection-Mini-book.zip

最新版linux jdk-16_linux-x64_bin.tar.gz

JDK10-JSE ,HotSpot Virtual Machine Garbage Collection-53T.pdf

jmc-7.1.2_windows-x64.zip

jdk13 linux-x64_bin.tar.gz

jdk1.8 java官网正式版linux 64位-jdk-8u202-linux-x64.tar.gz

NDP452-KB2901907-x86-x64-AllOS-ENU.rar

The Garbage Collection Handbook.pdf

openjdk-17+35_linux-x64_bin.tar.gz

藏经阁-Garbage In,Garbage Out.pdf

jdk-17_linux-aarch64_bin.tar.gz

jdk1.7 Linux64位官方正式版 jdk-7u80-linux-x64.tar.zip

最新资源