建议关键字 java GraalVM graalvm
Summarize
Omitted …
0x01 官网
https://www.graalvm.org/downloads/
0x02 安装
bash <(curl -sL https://get.graalvm.org/jdk)
Downloading graalvm-ce-java17-darwin-amd64-22.3.0.tar.gz...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 248M 100 248M 0 0 80990 0 0:53:39 0:53:39 --:--:-- 465k
Verifying checksum...
Extracting...
Installing GraalVM components...
Downloading: Component catalog from www.graalvm.org
Processing Component: Native Image
Downloading: Component native-image: Native Image from github.com
Installing new component: Native Image (org.graalvm.native-image, version 22.3.0)
+------------------------------------------------------------------------------+
| Prerequisites for GraalVM Native Image |
+------------------------------------------------------------------------------+
| If you are using macOS Catalina and later you may need to remove the |
| quarantine attribute before use: |
| $ sudo xattr -r -d com.apple.quarantine "/Users/chengchao/graalvm-ce-java17-22.3.0/Contents/Home" |
| |
| Please also ensure Xcode is installed: |
| $ xcode-select --install |
+------------------------------------------------------------------------------+
GraalVM JDK (graalvm-ce-java17-22.3.0) has been downloaded successfully!
Run the following to set your $GRAALVM_HOME, $PATH, and/or $JAVA_HOME:
$ export GRAALVM_HOME="/Users/chengchao/graalvm-ce-java17-22.3.0/Contents/Home"
$ export PATH="/Users/chengchao/graalvm-ce-java17-22.3.0/Contents/Home/bin:$PATH"
$ export JAVA_HOME="/Users/chengchao/graalvm-ce-java17-22.3.0/Contents/Home"
$ gu
GraalVM Component Updater v2.0.0
Usage:
gu info [-cClLnprstuvVJ] <param> print info about a specific component (from a file, a URL or a catalog)
gu available [-aClvVJ] <expr> list components available in a catalog
gu install [-0CcDfiLMnosruvyxY] <param> install a component package
gu list [-clvJ] <expression> list installed components, or components from a catalog
gu remove [-0DfMxv] <id> uninstall a component
gu upgrade [-cCnLsuxSd] [<ver>] [<cmp>] upgrade to a recent GraalVM or edition
gu rebuild-images rebuild native executables. Use -h for detailed usage
Common options:
-A, --auto-yes respond YES or ACCEPT to all questions.
-c, --catalog treat parameters as component IDs from a catalog of GraalVM components. This is the default.
-C, --custom-catalog <url> use user-supplied catalog at URL.
-e, --debug debugging. Prints stacktraces, ...
-E, --no-catalog-errors do not stop if at least one catalog is working.
-h, --help print help.
-L, --local-file, --file treat parameters as local filenames of packaged components.
-N, --non-interactive noninteractive mode. Fail when input is required.
--show-version print version information and continue.
-u, --url interpret parameters as URLs of packaged components.
-v, --verbose be verbose. Print versions and dependency information.
--version print version.
Additonal options:
--email <address> email address that confirms acceptance of GDS license.
can only be used with some commands.
--config <path> path to configuration file
--show-ee-token print current download token
Use
gu <command> -h
to get specific help.
Runtime options:
--native Run using the native launcher with limited access to Java libraries
(default).
--jvm Run on the Java Virtual Machine with access to Java libraries.
--vm.[option] Pass options to the host VM. To see available options, use '--help:vm'.
--log.file=<String> Redirect guest languages logging into a given file.
--log.[logger].level=<String> Set language log level to OFF, SEVERE, WARNING, INFO, CONFIG, FINE,
FINER, FINEST or ALL.
--help Print this help message.
--help:vm Print options for the host VM.
$ gu list
ComponentId Version Component name Stability Origin
---------------------------------------------------------------------------------------------------------------------------------
graalvm 22.3.0 GraalVM Core Supported
native-image 22.3.0 Native Image Early adopter github.com
0x03 测试
写一段简单的 Java 代码：
public class Test {
public static void main(String[] args) {
System.out.println("Hello GraalVM !");
}
}
编译
$ java -version
openjdk version "17.0.5" 2022-10-18
OpenJDK Runtime Environment GraalVM CE 22.3.0 (build 17.0.5+8-jvmci-22.3-b08)
OpenJDK 64-Bit Server VM GraalVM CE 22.3.0 (build 17.0.5+8-jvmci-22.3-b08, mixed mode, sharing)
$ javac Test.java
$ java Test
Hello GraalVM !
$ native-image Test
========================================================================================================================
GraalVM Native Image: Generating 'test' (executable)...
========================================================================================================================
[1/7] Initializing... (7.6s @ 0.10GB)
Version info: 'GraalVM 22.3.0 Java 17 CE'
Java version info: '17.0.5+8-jvmci-22.3-b08'
C compiler: cc (apple, x86_64, 14.0.0)
Garbage collector: Serial GC
[2/7] Performing analysis... [*****] (12.6s @ 0.63GB)
2,802 (73.54%) of 3,810 classes reachable
3,360 (50.75%) of 6,621 fields reachable
12,344 (42.84%) of 28,815 methods reachable
27 classes, 0 fields, and 313 methods registered for reflection
58 classes, 59 fields, and 52 methods registered for JNI access
4 native libraries: -framework Foundation, dl, pthread, z
[3/7] Building universe... (1.7s @ 1.10GB)
[4/7] Parsing methods... [*] (1.4s @ 1.73GB)
[5/7] Inlining methods... [***] (1.3s @ 0.60GB)
[6/7] Compiling methods... [***] (10.9s @ 1.53GB)
[7/7] Creating image... (2.2s @ 1.97GB)
3.90MB (35.44%) for code area: 7,073 compilation units
6.91MB (62.72%) for image heap: 97,694 objects and 5 resources
206.47KB ( 1.83%) for other data
11.01MB in total
------------------------------------------------------------------------------------------------------------------------
Top 10 packages in code area: Top 10 object types in image heap:
658.04KB java.util 915.50KB java.lang.String
324.62KB java.lang 870.93KB byte[] for code metadata
264.72KB java.text 839.54KB byte[] for general heap data
216.40KB java.util.regex 614.93KB java.lang.Class
194.70KB java.util.concurrent 540.57KB byte[] for java.lang.String
146.95KB java.math 452.67KB java.util.HashMap$Node
116.72KB java.lang.invoke 218.91KB com.oracle.svm.core.hub.DynamicHubCompanion
114.72KB com.oracle.svm.core.genscavenge 217.09KB java.util.HashMap$Node[]
94.83KB java.util.stream 159.91KB java.lang.String[]
94.03KB java.util.logging 155.02KB java.util.concurrent.ConcurrentHashMap$Node
1.68MB for 115 more packages 1.52MB for 767 more object types
------------------------------------------------------------------------------------------------------------------------
1.0s (2.5% of total time) in 17 GCs | Peak RSS: 3.06GB | CPU load: 4.93
------------------------------------------------------------------------------------------------------------------------
Produced artifacts:
/Users/chengchao/temp/graalvm/test (executable)
/Users/chengchao/temp/graalvm/test.build_artifacts.txt (txt)
========================================================================================================================
Finished generating 'test' in 39.4s.
$ ls
Test.class Test.java test test.build_artifacts.txt
$ ./test
Hello GraalVM !
$ time java Test
Hello GraalVM !
real 0m0.145s
user 0m0.099s
sys 0m0.044s
$ time ./test
Hello GraalVM !
real 0m0.011s
user 0m0.004s
sys 0m0.005s
EOF
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