如何增加org.eclipse.ant.core.antRunner的内存

Question

I am running the Eclipse ant runner from command line in the following way:

set LAUNCHER=%ECLIPSE_SDK%\eclipse\plugins\org.eclipse.equinox.launcher_1.1.3.0.jar

%JAVA_HOME%\bin\java.exe -jar %LAUNCHER% -application org.eclipse.ant.core.antRunner -propertyfile %PROPERTIES% -buildfile build.xml

How do I increase the memory provided to this jvm instance ? I am asking this because I am facing OutOfMemory errors in the heap space and adding -vmargs -Xmx512m to the command line didn't fixed the issue

In order to see if -vmargs are taken into account I simply wrote the folowing task:

public class DisplayTask extends Task {

    @Override
    public void execute() throws BuildException {
        System.out.println(Runtime.getRuntime().maxMemory() / 1000000);
    }
}

and just launch it in my build.xml (using taskedf to define the task). The output is always 66 whatever I put in -vmargs -Xmx ....

Answer 1

I got it, the solution is to add -Xmx512m option just after the java.exe as folowing:

%JAVA_HOME%\bin\java.exe **-Xmx512m** -jar %LAUNCHER% -application org.eclipse.ant.core.antRunner -propertyfile %PROPERTIES% -buildfile build.xml

This is finally NORMAL. Only the eclipse.exe executable understands the -vmargs flag; when I run java -jar LAUNCHER then I am creating the VM and must thus specify the arguments myself.

Answer 2

如果使用的是本地Equinox Launcher（不是，但可能应该--launcher.appendVmargs附带精心制作的VM参数），您应该了解--launcher.appendVmargs参数（请参阅Eclipse运行时选项 ， Eclipse / 149994和eclipse.ini）详情

 # eclipse --launcher.appendVmargs -vmargs  -Xmx512m -application org.eclipse.ant.core.antRunner -propertyfile %PROPERTIES% -buildfile build.xml

Answer 3

您可以尝试设置ANT_OPTS系统变量： http : //www.liferay.com/community/wiki/-/wiki/Main/Ant+opts