我们有一个运行GWT插件的Maven构建版(gwt-maven)。不幸的是,它的内存不足。
我是否需要为Maven本身提供更多堆,还是需要为GWT提供更多堆?知道如何为pom.xml文件指定这个吗?
答案 0 :(得分:5)
我认为应该配置extraJvmArgs
选项。
答案 1 :(得分:3)
在gwt-maven-plugin的配置标记下添加extraJvmArgs标记。
示例 -
<!-- GWT Maven Plugin -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<dependencies>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-user</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-dev</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-servlet</artifactId>
<version>${gwtVersion}</version>
</dependency>
</dependencies>
<!-- JS is only needed in the package phase, this speeds up testing -->
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
<!-- Plugin configuration. There are many available options, see gwt-maven-plugin
documentation at codehaus.org -->
<configuration>
<runTarget>app.html</runTarget>
<!-- Turning This on after understanding soyc and when deferredjs count is 48.cache.js -->
<!-- https://developers.google.com/web-toolkit/articles/fragment_merging -->
<fragmentCount>25</fragmentCount>
-->
<!-- Ask GWT to create the Story of Your Compile (SOYC) (gwt:compile) -->
<!-- Turn This on for generating soyc. This does not work if closure compiler is turned on.-->
<!-- Start Generating SOYC -->
<compileReport>true</compileReport>
<compilerMetrics>true</compilerMetrics>
<soycDetailed>true</soycDetailed>
<!-- End Generating SOYC -->
<disableCastChecking>true</disableCastChecking>
<disableClassMetadata>true</disableClassMetadata>
<enableClosureCompiler>true</enableClosureCompiler>
<optimizationLevel>9</optimizationLevel>
<style>${gwt.style}</style>
<module>${gwtModule}</module>
<encoding>${project.build.sourceEncoding}</encoding>
<strict>true</strict>
<logLevel>INFO</logLevel>
<copyWebapp>true</copyWebapp>
<hostedWebapp>
${project.build.directory}/${project.artifactId}
</hostedWebapp>
<extraJvmArgs>-Xmx896M -Xms896m -XX:PermSize=64m -XX:MaxPermSize=128m</extraJvmArgs>
<!-- <extraJvmArgs>-Xmx896M -Xms896m -XX:PermSize=64m -XX:MaxPermSize=128m -XX:+UseConcMarkSweepGC -server</extraJvmArgs> -->
</configuration>
</plugin>
答案 2 :(得分:1)
我在一个大型GWT项目中遇到了这个错误。内存不足时可能会看到的错误是:
[ERROR] OutOfMemoryError: Increase heap size of lower gwt.jjs.maxThreads
java.lang.OutOfMemoryError: Java heap space
extraJvmArgs
选项需要与MAVEN_OPTS
环境变量(this is a possible explanation)一起设置。我还设置了Java -Dgwt.compiler.localWorkers=x
选项以减少并发编译线程的数量(我将x设置为1,但您可以使用它来查找有效的内容)。
有关您应该使用extraJvmArgs选项的设置示例,请参阅此post。
请注意,您可能需要将extraJvmArgs选项直接添加到插件元素配置中 - 请参阅https://stackoverflow.com/a/5822929/157605。