深入理解jvm—编译-白红宇

深入理解jvm—编译

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发布时间：2019-06-24

本文共 14461 字，大约阅读时间需要 48 分钟。

java开发一阵子了，想深入了解下jvm，所以在ubuntu下本地编译学习一下openjdk代码

1，java虚拟机有很多不稳定参数，以xx开头可以使用java -XX:+PrintFlagsFinal 查看；

2，编译java

下载open jdk 源码;http://download.java.net/openjdk/jdk8/

放到ubuntu 虚拟机,解压，根据readme.build操作

configure: error: Could not find freetype! You might be able to fix this by running 'sudo apt-get install libfreetype6-dev'.

安装完依然这个鸟样。FUCK！最近工作忙，找个时间继续

--------------------------------------

开始重编译一次

1，在ubuntu 14.04 64b，先安装需要的软件

sudo apt-get install build-essential gawk m4 libasound2-dev   libxrender-dev xorg-dev xutils-dev x11proto-print-dev binutils libmotif3 libmotif-dev ant

2，下载openjdk，1.7 http://www.java.net/download/openjdk/jdk7u40/promoted/b43/openjdk-7u40-fcs-src-b43-26_aug_2013.zip

下载上传服务器，解压缩;

make sanity

----------------------------------------------

ERROR: You do not have access to valid Cups header files.

Please check your access to

/usr/include/cups/cups.h

and/or check your value of ALT_CUPS_HEADERS_PATH,

CUPS is frequently pre-installed on many systems,

or may be downloaded from http://www.cups.org

安装解决：sudo apt-get install libcups2-dev

ERROR: HOTSPOT_SERVER_PATH does not point to a valid HotSpot VM.

Please check your access to

/NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-amd64/jre/lib/amd64/server/libjvm.so

and/or check your value of ALT_HOTSPOT_SERVER_PATH.

执行目录不对，应该在open jdk根目录运行

运行后显示：Sanity check passed.

运行命令：make

/jvm/openjdk/langtools/make/build.xml:860: Error running /usr/lib/jvm/java-7-openjdk-amd64/bin/javac compiler

安装openjdk sudo apt-get install openjdk-7-jdk

再运行命令：

make ALT_BOOTDIR=/usr/lib/jvm/jdk1.7.0_80

开始编译

/bin/sh: 2: zip: not found

apt-get install zip

再运行命令： make ALT_BOOTDIR=/usr/lib/jvm/jdk1.7.0_80

再报错

make[5]: Entering directory `/jvm/openjdk/build/linux-amd64/hotspot/outputdir'

>&2 echo "*** This OS is not supported:" `uname -a`; exit 1;

*** This OS is not supported: Linux 466e7b25085c 4.4.52-1.el7.elrepo.x86_64 #1 SMP Sun Feb 26 08:48:14 EST 2017 x86_64 x86_64 x86_64 GNU/Linux

make[5]: *** [check_os_version] Error 1

make[5]: Leaving directory `/jvm/openjdk/build/linux-amd64/hotspot/outputdir'

make[4]: *** [linux_amd64_compiler2/debug] Error 2

make[4]: Leaving directory `/jvm/openjdk/build/linux-amd64/hotspot/outputdir'

make[3]: *** [generic_build2] Error 2

make[3]: Leaving directory `/jvm/openjdk/hotspot/make'

make[2]: *** [product] Error 2

make[2]: Leaving directory `/jvm/openjdk/hotspot/make'

make[1]: *** [hotspot-build] Error 2

make[1]: Leaving directory `/jvm/openjdk'

make: *** [build_product_image] Error 2

真是日了狗了，原来是hot spot makefile版本指定太低，

修改文件/jvm/openjdk/hotspot/make/linux# vi Makefile

SUPPORTED_OS_VERSION = 2.4% 2.5% 2.6% 3% 这后面添加自己的linux版本 4%

继续 make 命令：make ALT_BOOTDIR=/usr/lib/jvm/java-7-openjdk-amd64

程序开始正常编译，过了大约5-6分钟，又报错：

Using java runtime atError occurred during initialization of VMjava.lang.NullPointerException        at java.util.Hashtable.hash(Hashtable.java:262)        at java.util.Hashtable.remove(Hashtable.java:585)        at java.lang.System.initProperties(Native Method)        at java.lang.System.initializeSystemClass(System.java:1119)

真是日了狗了，这个明显是代码空指针异常，更改使用jdk1.6

make ALT_BOOTDIR=/jvm/jdk1.6.0_45

注：此处至少说明oracle jdk和openjdk 此处文件

java.lang.System.initializeSystemClass(System.java:1119)有较大改动。

编译通过，继续往下走：

又报错：

/jvm/jdk1.6.0_45/bin/java -XX:-PrintVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-LogVMOutput -Xmx512m -Xms512m -XX:PermSize=32m -XX:MaxPermSize=160m -jar /jvm/openjdk/build/linux-amd64/btjars/generatecurrencydata.jar -o /jvm/openjdk/build/linux-amd64/lib/currency.data.temp \                < ../../../src/share/classes/java/util/CurrencyData.propertiesError: time is more than 10 years from present: 1136059200000java.lang.RuntimeException: time is more than 10 years from present: 1136059200000        at build.tools.generatecurrencydata.GenerateCurrencyData.makeSpecialCaseEntry(GenerateCurrencyData.java:285)        at build.tools.generatecurrencydata.GenerateCurrencyData.buildMainAndSpecialCaseTables(GenerateCurrencyData.java:225)        at build.tools.generatecurrencydata.GenerateCurrencyData.main(GenerateCurrencyData.java:154)make[4]: *** [/jvm/openjdk/build/linux-amd64/lib/currency.data] Error 1make[4]: Leaving directory `/jvm/openjdk/jdk/make/java/java'

时间过长？查看文件，发现如下注释：

# Mappings from ISO 3166 country codes to ISO 4217 currency codes.## Three forms are used:# Form 1: 
    
     =
     
      # Form 2: 
      
       =
       
        ;
        ;
         
          # Form 3: 
          
           =# Form 1 is used if no future change in currency is known.# Form 2 indicates that before the specified time currency 1 is used, from# the specified time currency 2. The time is given in SimpleDateFormat's# yyyy-MM-dd-HH-mm-ss format in the GMT time zone.# Form 3 indicates the country doesn't have a currency (the entry is still# needed to verify that the country code is valid).

修改文件如下：

## Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.## This code is free software; you can redistribute it and/or modify it# under the terms of the GNU General Public License version 2 only, as# published by the Free Software Foundation.  Oracle designates this# particular file as subject to the "Classpath" exception as provided# by Oracle in the LICENSE file that accompanied this code.## This code is distributed in the hope that it will be useful, but WITHOUT# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License# version 2 for more details (a copy is included in the LICENSE file that# accompanied this code).## You should have received a copy of the GNU General Public License version# 2 along with this work; if not, write to the Free Software Foundation,# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.## Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA# or visit www.oracle.com if you need additional information or have any# questions.#formatVersion=1# Version of the currency code information in this class.# It is a serial number that accompanies with each amendment, such as # 'MAxxx.doc'dataVersion=151# List of all valid ISO 4217 currency codes.# To ensure compatibility, do not remove codes.all=ADP020-AED784-AFA004-AFN971-ALL008-AMD051-ANG532-AOA973-ARS032-ATS040-AUD036-\    AWG533-AYM945-AZM031-AZN944-BAM977-BBD052-BDT050-BEF056-BGL100-BGN975-BHD048-BIF108-\    BMD060-BND096-BOB068-BOV984-BRL986-BSD044-BTN064-BWP072-BYB112-BYR974-\    BZD084-CAD124-CDF976-CHF756-CLF990-CLP152-CNY156-COP170-CRC188-CSD891-CUP192-CUC931-\    CVE132-CYP196-CZK203-DEM276-DJF262-DKK208-DOP214-DZD012-EEK233-EGP818-\    ERN232-ESP724-ETB230-EUR978-FIM246-FJD242-FKP238-FRF250-GBP826-GEL981-\    GHC288-GHS936-GIP292-GMD270-GNF324-GRD300-GTQ320-GWP624-GYD328-HKD344-HNL340-\    HRK191-HTG332-HUF348-IDR360-IEP372-ILS376-INR356-IQD368-IRR364-ISK352-\    ITL380-JMD388-JOD400-JPY392-KES404-KGS417-KHR116-KMF174-KPW408-KRW410-\    KWD414-KYD136-KZT398-LAK418-LBP422-LKR144-LRD430-LSL426-LTL440-LUF442-\    LVL428-LYD434-MAD504-MDL498-MGA969-MGF450-MKD807-MMK104-MNT496-MOP446-MRO478-\    MTL470-MUR480-MVR462-MWK454-MXN484-MXV979-MYR458-MZM508-MZN943-NAD516-NGN566-\    NIO558-NLG528-NOK578-NPR524-NZD554-OMR512-PAB590-PEN604-PGK598-PHP608-\    PKR586-PLN985-PTE620-PYG600-QAR634-ROL946-RON946-RSD941-RUB643-RUR810-RWF646-SAR682-\    SBD090-SCR690-SDD736-SDG938-SEK752-SGD702-SHP654-SIT705-SKK703-SLL694-SOS706-\    SRD968-SRG740-STD678-SVC222-SYP760-SZL748-THB764-TJS972-TMM795-TMT934-TND788-TOP776-\    TPE626-TRL792-TRY949-TTD780-TWD901-TZS834-UAH980-UGX800-USD840-USN997-USS998-\    UYU858-UZS860-VEB862-VEF937-VND704-VUV548-WST882-XAF950-XAG961-XAU959-XBA955-\    XBB956-XBC957-XBD958-XCD951-XDR960-XFO000-XFU000-XOF952-XPD964-XPF953-\    XPT962-XSU994-XTS963-XUA965-XXX999-YER886-YUM891-ZAR710-ZMK894-ZWD716-ZWL932-ZWN942-ZWR935# Mappings from ISO 3166 country codes to ISO 4217 currency codes.## Three forms are used:# Form 1: 
    
     =
     
      # Form 2: 
      
       =
       
        ;
        ;
         
          # Form 3: 
          
           =# Form 1 is used if no future change in currency is known.# Form 2 indicates that before the specified time currency 1 is used, from# the specified time currency 2. The time is given in SimpleDateFormat's# yyyy-MM-dd-HH-mm-ss format in the GMT time zone.# Form 3 indicates the country doesn't have a currency (the entry is still# needed to verify that the country code is valid).## The table is based on the following web sites:# http://www.din.de/gremien/nas/nabd/iso3166ma/codlstp1/db_en.html# http://www.bsi-global.com/iso4217currency# http://www.cia.gov/cia/publications/factbook/indexgeo.html# AFGHANISTANAF=AFN# \u00c5LAND ISLANDSAX=EUR# ALBANIAAL=ALL# ALGERIADZ=DZD# AMERICAN SAMOAAS=USD# ANDORRAAD=EUR# ANGOLAAO=AOA# ANGUILLAAI=XCD# ANTARCTICAAQ=# ANTIGUA AND BARBUDAAG=XCD# ARGENTINAAR=ARS# ARMENIAAM=AMD# ARUBAAW=AWG# AUSTRALIAAU=AUD# AUSTRIAAT=EUR# AZERBAIJANAZ=AZM;2015-12-31-20-00-00;AZN# BAHAMASBS=BSD# BAHRAINBH=BHD# BANGLADESHBD=BDT# BARBADOSBB=BBD# BELARUSBY=BYR# BELGIUMBE=EUR# BELIZEBZ=BZD# BENINBJ=XOF# BERMUDABM=BMD# Bonaire, Sint Eustatius and SabaBQ=USD# BHUTANBT=BTN# BOLIVIABO=BOB# BOSNIA AND HERZEGOVINABA=BAM# BOTSWANABW=BWP# BOUVET ISLANDBV=NOK# BRAZILBR=BRL# BRITISH INDIAN OCEAN TERRITORYIO=USD# BRUNEI DARUSSALAMBN=BND# BULGARIABG=BGN# BURKINA FASOBF=XOF# BURUNDIBI=BIF# CAMBODIAKH=KHR# CAMEROONCM=XAF# CANADACA=CAD# CAPE VERDECV=CVE# CAYMAN ISLANDSKY=KYD# CENTRAL AFRICAN REPUBLICCF=XAF# CHADTD=XAF# CHILECL=CLP# CHINACN=CNY# CHRISTMAS ISLANDCX=AUD# COCOS (KEELING) ISLANDSCC=AUD# COLOMBIACO=COP# COMOROSKM=KMF# CONGOCG=XAF# CONGO, THE DEMOCRATIC REPUBLIC OF THECD=CDF# COOK ISLANDSCK=NZD# COSTA RICACR=CRC# COTE D'IVOIRECI=XOF# CROATIAHR=HRK# CUBACU=CUP# Cura\u00e7aoCW=ANG# CYPRUSCY=EUR# CZECH REPUBLICCZ=CZK# DENMARKDK=DKK# DJIBOUTIDJ=DJF# DOMINICADM=XCD# DOMINICAN REPUBLICDO=DOP# ECUADOREC=USD# EGYPTEG=EGP# EL SALVADOR# USD is also legal currency as of 2001/01/01SV=SVC# EQUATORIAL GUINEAGQ=XAF# ERITREAER=ERN# ESTONIAEE=EUR# ETHIOPIAET=ETB# FALKLAND ISLANDS (MALVINAS)FK=FKP# FAROE ISLANDSFO=DKK# FIJIFJ=FJD# FINLANDFI=EUR# FRANCEFR=EUR# FRENCH GUIANAGF=EUR# FRENCH POLYNESIAPF=XPF# FRENCH SOUTHERN TERRITORIESTF=EUR# GABONGA=XAF# GAMBIAGM=GMD# GEORGIAGE=GEL# GERMANYDE=EUR# GHANAGH=GHS# GIBRALTARGI=GIP# GREECEGR=EUR# GREENLANDGL=DKK# GRENADAGD=XCD# GUADELOUPEGP=EUR# GUAMGU=USD# GUATEMALAGT=GTQ# GUERNSEYGG=GBP# GUINEAGN=GNF# GUINEA-BISSAUGW=XOF# GUYANAGY=GYD# HAITIHT=HTG# HEARD ISLAND AND MCDONALD ISLANDSHM=AUD# HOLY SEE (VATICAN CITY STATE)VA=EUR# HONDURASHN=HNL# HONG KONGHK=HKD# HUNGARYHU=HUF# ICELANDIS=ISK# INDIAIN=INR# INDONESIAID=IDR# IRAN, ISLAMIC REPUBLIC OFIR=IRR# IRAQIQ=IQD# IRELANDIE=EUR# ISLE OF MANIM=GBP# ISRAELIL=ILS# ITALYIT=EUR# JAMAICAJM=JMD# JAPANJP=JPY# JERSEYJE=GBP# JORDANJO=JOD# KAZAKSTANKZ=KZT# KENYAKE=KES# KIRIBATIKI=AUD# KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OFKP=KPW# KOREA, REPUBLIC OFKR=KRW# KUWAITKW=KWD# KYRGYZSTANKG=KGS# LAO PEOPLE'S DEMOCRATIC REPUBLICLA=LAK# LATVIALV=LVL# LEBANONLB=LBP# LESOTHOLS=LSL# LIBERIALR=LRD# LIBYAN ARAB JAMAHIRIYALY=LYD# LIECHTENSTEINLI=CHF# LITHUANIALT=LTL# LUXEMBOURGLU=EUR# MACAUMO=MOP# MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OFMK=MKD# MADAGASCARMG=MGA# MALAWIMW=MWK# MALAYSIAMY=MYR# MALDIVESMV=MVR# MALIML=XOF# MALTAMT=EUR# MARSHALL ISLANDSMH=USD# MARTINIQUEMQ=EUR# MAURITANIAMR=MRO# MAURITIUSMU=MUR# MAYOTTEYT=EUR# MEXICOMX=MXN# MICRONESIA, FEDERATED STATES OFFM=USD# MOLDOVA, REPUBLIC OFMD=MDL# MONACOMC=EUR# MONGOLIAMN=MNT# MONTENEGROME=EUR# MONTSERRATMS=XCD# MOROCCOMA=MAD# MOZAMBIQUEMZ=MZM;2016-06-30-22-00-00;MZN# MYANMARMM=MMK# NAMIBIANA=NAD# NAURUNR=AUD# NEPALNP=NPR# NETHERLANDSNL=EUR# NETHERLANDS ANTILLESAN=ANG# NEW CALEDONIANC=XPF# NEW ZEALANDNZ=NZD# NICARAGUANI=NIO# NIGERNE=XOF# NIGERIANG=NGN# NIUENU=NZD# NORFOLK ISLANDNF=AUD# NORTHERN MARIANA ISLANDSMP=USD# NORWAYNO=NOK# OMANOM=OMR# PAKISTANPK=PKR# PALAUPW=USD# PALESTINIAN TERRITORY, OCCUPIEDPS=ILS# PANAMAPA=PAB# PAPUA NEW GUINEAPG=PGK# PARAGUAYPY=PYG# PERUPE=PEN# PHILIPPINESPH=PHP# PITCAIRNPN=NZD# POLANDPL=PLN# PORTUGALPT=EUR# PUERTO RICOPR=USD# QATARQA=QAR# REUNIONRE=EUR# ROMANIARO=ROL;2015-06-30-21-00-00;RON# RUSSIAN FEDERATIONRU=RUB# RWANDARW=RWF# SAINT BARTHELEMYBL=EUR# SAINT HELENASH=SHP# SAINT KITTS AND NEVISKN=XCD# SAINT LUCIALC=XCD# SAINT MARTINMF=EUR# SAINT PIERRE AND MIQUELONPM=EUR# SAINT VINCENT AND THE GRENADINESVC=XCD# SAMOAWS=WST# SAN MARINOSM=EUR# SAO TOME AND PRINCIPEST=STD# SAUDI ARABIASA=SAR# SENEGALSN=XOF# SERBIARS=RSD# SERBIA AND MONTENEGROCS=CSD# SEYCHELLESSC=SCR# SIERRA LEONESL=SLL# SINGAPORESG=SGD# SLOVAKIASK=EUR# SLOVENIASI=EUR# SOLOMON ISLANDSSB=SBD# SOMALIASO=SOS# SOUTH AFRICAZA=ZAR# SOUTH GEORGIA AND THE SOUTH SANDWICH ISLANDSGS=GBP# SPAINES=EUR# SRI LANKALK=LKR# SUDANSD=SDG# SURINAMESR=SRD# SVALBARD AND JAN MAYENSJ=NOK# Sint Maarten (Dutch part)SX=ANG# SWAZILANDSZ=SZL# SWEDENSE=SEK# SWITZERLANDCH=CHF# SYRIAN ARAB REPUBLICSY=SYP# TAIWANTW=TWD# TAJIKISTANTJ=TJS# TANZANIA, UNITED REPUBLIC OFTZ=TZS# THAILANDTH=THB# TIMOR-LESTETL=USD# TOGOTG=XOF# TOKELAUTK=NZD# TONGATO=TOP# TRINIDAD AND TOBAGOTT=TTD# TUNISIATN=TND# TURKEYTR=TRL;2014-12-31-22-00-00;TRY# TURKMENISTANTM=TMT# TURKS AND CAICOS ISLANDSTC=USD# TUVALUTV=AUD# UGANDAUG=UGX# UKRAINEUA=UAH# UNITED ARAB EMIRATESAE=AED# UNITED KINGDOMGB=GBP# UNITED STATESUS=USD# UNITED STATES MINOR OUTLYING ISLANDSUM=USD# URUGUAYUY=UYU# UZBEKISTANUZ=UZS# VANUATUVU=VUV# VENEZUELAVE=VEB;2016-01-01-04-00-00;VEF# VIET NAMVN=VND# VIRGIN ISLANDS, BRITISHVG=USD# VIRGIN ISLANDS, U.S.VI=USD# WALLIS AND FUTUNAWF=XPF# WESTERN SAHARAEH=MAD# YEMENYE=YER# ZAMBIAZM=ZMK# ZIMBABWEZW=ZWL# List of currencies with 0, 1, OR 3 decimals for minor units, or where there# are no minor units defined. All others use 2 decimals.minor0=\ ADP-BEF-BIF-BYB-BYR-CLF-CLP-DJF-ESP-GNF-\ GRD-ISK-ITL-JPY-KMF-KRW-LUF-MGF-PYG-PTE-RWF-\ TPE-TRL-VUV-XAF-XOF-XPFminor1=minor3=\ BHD-IQD-JOD-KWD-LYD-OMR-TNDminorUndefined=\ XAG-XAU-XBA-XBB-XBC-XBD-XDR-XFO-XFU-XPD-\ XPT-XSU-XTS-XUA-XXX