Compiling Distributed C

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1、CompilingDistributedC++HaroldCarr,RobertR.Kessler,MarkSwansonDepartmentofComputerScienceUniversityofUtahSaltLakeCity,Utah,84112Abstract2Domains-AbstractProcessorsDC++supportsparallelismbyproviding2types:DistributedC++(DC++)isalanguageforwrit-domainsandthreads([13,171).Ad

2、omainisalogi-ingparallelapplicationsonlooselycoupleddistributedcallyencapsulatedaddressandcontrolspace,anab-systemsinC++.ItskeyideaistoextendtheC++stractprocessor.Adomainissimilartoamonitor[ll]:classinto3categories:gatewayclasseswhichactastheyensuremutualexclusionsynchro

3、nizationbyen-communicationandsynchronizationentrypointsbe-forcingtherulethatonlyonethreadofcontrolmaytweenabstmctprocessors,classeswhoseinstancesmaybeactiveinadomainatatime.Ifanotherthreadat-temptsentrytoanoccupieddomain,thatthreadwillbepassedbyvaluebetweenabstractproces

4、sorsviagate-bequeuedonaFIFOqueueforlaterentrywhentheways,andvanillaC++classes.DC++codeiscom-domainbecomesvacant.ItdiffersfromamonitorinpiledtoC++codewithcallstotheDC++runtimethatdomainsmaybedynamicallycreatedanddeleted.system.TheDC++compilerwmpsgatewayclassesFurther,adom

5、ainbyitselfdoesnothaveanyentrywithhandleclassessothatremoteprocedurecallsarepoints.Entrypointsmaybedynamicallycreatedandtransparent.Itaddsstaticvariablestovalueclassesdeletedbycreatinggatewayclassinstancesintod*andproducescodewhichisusedtomarshalandun-mains.Adomainiscrea

6、tedbyspecifyingaphysicalmarshalargumentswhenthesevalueclassesareusedprocessornumber(@based)onwhichtoallocatetheinremoteprocedurecalls.Valueclassesaredeepdomain.Fortheboundedbufferexamplewewillcre-copiedandpreservestructuresharing.Thispaperate6domains:oneeachforthe3produc

7、ers,oneforshowsDC++compilationandperformance.thebuffer,andoneeachfor2consumers:constnun-producers=3;constnum-consumers=2;DcDomain+pd[num-producersl;1IntroductionDcDomain*cd[num-consumers];DcDomainrbd=newDcDomain(num-producers+nu-consumers);DC++isdesignedtoexploitlooselyc

8、oupleddis-for(inti=0;i