Build OpenJDK 17 Zero VM on macOS (interpreted mode)

前置

环境依赖:

获得源码

git clone --recurse-submodules --depth 1 https://github.com/openjdk/jdk.git

libffi

git clone --depth 1 git@github.com:libffi/libffi.git
cd libffi
./autogen.sh && \
    python ./generate-darwin-source-and-headers.py && \
    ./configure --enable-debug --enable-purify-safety --prefix=${LOCAL_DIR} && \
    make -j4 && make install  

生成Makefile

Zero Slowdebug

make clean ; make dist-clean;
sh ./configure --enable-dtrace \
    --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home/ \
    --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin \
    --disable-warnings-as-errors \
    --with-boot-jdk-jvmargs="-XX:+UseG1GC -Xms8G -Xmx8G" \
    --with-toolchain-type=clang \
    --with-debug-level=slowdebug \
    --with-native-debug-symbols=internal \
    --with-jvm-variants=zero \
    --with-target-bits=64 \
    --with-libffi=/Users/yakir/local/brew/opt/libffi \
    --with-num-cores=12 \
    --with-jobs=12

Server & Client Fastdebug

make clean ; make dist-clean;
sh ./configure --enable-dtrace \
    --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home/ \
    --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin \
    --disable-warnings-as-errors \
    --with-boot-jdk-jvmargs="-XX:+UseG1GC -Xms8G -Xmx8G" \
    --with-toolchain-type=clang \
    --with-debug-level=fastdebug \
    --with-native-debug-symbols=internal \
    --with-jvm-variants=server,client \
    --with-target-bits=64 \
    --with-libffi=/Users/yakir/local/brew/opt/libffi \
    --with-num-cores=12 \
    --with-jobs=12

--enable-ccache选项看着加😁

Zero Slowdebug `configure` 成功输出

====================================================
A new configuration has been successfully created in
/Volumes/sm/github/jdk/jdkbuild/build/macosx-x86_64-zero-slowdebug
using configure arguments '--enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home/ --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin --disable-warnings-as-errors --with-boot-jdk-jvmargs='-XX:+UseG1GC -Xms4G -Xmx4G' --with-toolchain-type=clang --with-debug-level=slowdebug --with-native-debug-symbols=internal --with-jvm-variants=zero --with-target-bits=64 --with-libffi=/Users/yakir/local/brew/opt/libffi --with-num-cores=12 --with-jobs=12'.

Configuration summary:
* Name:           macosx-x86_64-zero-slowdebug
* Debug level:    slowdebug
* HS debug level: debug
* JVM variants:   zero
* JVM features:   zero: 'dtrace epsilongc g1gc jni-check jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zero' 
* OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64
* Version string: 17-internal+0-adhoc.yakir.jdkbuild (17-internal)

Tools summary:
* Boot JDK:       java version "16.0.1" 2021-04-20 Java(TM) SE Runtime Environment (build 16.0.1+9-24) Java HotSpot(TM) 64-Bit Server VM (build 16.0.1+9-24, mixed mode, sharing) (at /Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home)
* Toolchain:      clang (clang/LLVM from Xcode 12.5)
* C Compiler:     Version 12.0.5 (at /usr/bin/clang)
* C++ Compiler:   Version 12.0.5 (at /usr/bin/clang++)

Build performance summary:
* Cores to use:   12
* Memory limit:   32768 MB

Server & Client Fastdebug `configure` 成功输出

====================================================
A new configuration has been successfully created in
/Volumes/sm/github/jdk/jdkbuild/build/macosx-x86_64-serverANDclient-fastdebug
using configure arguments '--enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home/ --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin --disable-warnings-as-errors --with-boot-jdk-jvmargs='-XX:+UseG1GC -Xms8G -Xmx8G' --with-toolchain-type=clang --with-debug-level=fastdebug --with-native-debug-symbols=internal --with-jvm-variants=server,client --with-target-bits=64 --with-libffi=/Users/yakir/local/brew/opt/libffi --with-num-cores=12 --with-jobs=12'.

Configuration summary:
* Name:           macosx-x86_64-serverANDclient-fastdebug
* Debug level:    fastdebug
* HS debug level: fastdebug
* JVM variants:   server client
* JVM features:   server: 'cds compiler1 compiler2 dtrace epsilongc g1gc jfr jni-check jvmci jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc' client: 'cds compiler1 dtrace epsilongc g1gc jfr jni-check jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc' 
* OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64
* Version string: 17-internal+0-adhoc.yakir.jdkbuild (17-internal)

Tools summary:
* Boot JDK:       java version "16.0.1" 2021-04-20 Java(TM) SE Runtime Environment (build 16.0.1+9-24) Java HotSpot(TM) 64-Bit Server VM (build 16.0.1+9-24, mixed mode, sharing) (at /Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home)
* Toolchain:      clang (clang/LLVM from Xcode 12.5)
* C Compiler:     Version 12.0.5 (at /usr/bin/clang)
* C++ Compiler:   Version 12.0.5 (at /usr/bin/clang++)

Build performance summary:
* Cores to use:   12
* Memory limit:   32768 MB

NOTE: You have requested to build more than one version of the JVM, which
will result in longer build times.

The following warnings were produced. Repeated here for convenience:
WARNING: libffi not used, so --with-libffi[-*] is ignored

Make

make JOBS=12 all && make images

# 增量编译hotspot
make hotspot

验证(进`build`目录)

% time /Users/yakir/local/jdk/jdk-17.jdk/Contents/Home/bin/java -version 
openjdk version "17-internal" 2021-09-14
OpenJDK Runtime Environment (slowdebug build 17-internal+0-adhoc.yakir.jdkbuild)
OpenJDK 64-Bit Zero VM (slowdebug build 17-internal+0-adhoc.yakir.jdkbuild, interpreted mode)
/Users/yakir/local/jdk/jdk-17.jdk/Contents/Home/bin/java -version  0.61s user 0.02s system 22% cpu 2.800 total

% time /Users/yakir/local/jdk/jdk-17.jdk/Contents/Home/bin/javac -version 
javac 17-internal
/Users/yakir/local/jdk/jdk-17.jdk/Contents/Home/bin/javac -version  3.71s user 0.04s system 99% cpu 3.766 total

% time /Users/yakir/local/jdk/jdk-17.jdk/Contents/Home/bin/java /Volumes/sm/Hello.java 
Hello
/Users/yakir/local/jdk/jdk-17.jdk/Contents/Home/bin/java   20.35s user 0.10s system 99% cpu 20.497 total

对比Oracle Java 11

% time java /Volumes/sm/Hello.java 
Hello
java /Volumes/sm/Hello.java  1.00s user 0.12s system 108% cpu 1.032 total

对比OpenJDK Java 16

% time java /Volumes/sm/Hello.java 
Hello
java /Volumes/sm/Hello.java  0.89s user 0.07s system 219% cpu 0.439 total

// Hello.java
public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello");
    }
}

hsdis

cd src/utils/hsdis && 
    make ARCH=amd64 BINUTILS=binutils-2.34 CFLAGS="-Wno-error=logical-not-parentheses -Wno-error=string-plus-int -fbracket-depth=512" && \
    cp build/macosx-amd64/hsdis-amd64.dylib <JDK Home>/Contents/Home/lib/server/

使用: java -XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly

前置

获得源码

libffi

生成Makefile

Zero Slowdebug

Server & Client Fastdebug

Zero Slowdebug configure 成功输出

Server & Client Fastdebug configure 成功输出

Make

验证(进build目录)

hsdis

IdealGraphVisualizer

Zero Slowdebug `configure` 成功输出

Server & Client Fastdebug `configure` 成功输出

验证(进`build`目录)