Increase heap size available to dex operation in gradle

[Justin Breitfeller]

Is there a way to increase the maximum heap size for the dex operation that is invoked when compiling with gradle?

Thanks,
Justin

[Jake Wharton]

Export a GRADLE_OPTS with the normal java flags for increasing heap, etc. You can also customize the gradle wrapper scripts to tweak values.

---
Jake Wharton
http://about.me/jakewharton

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[Justin Breitfeller]

This is exactly what I have in my gradlew.bat file:

set GRADLE_OPTS=-XX:MaxPermSize=2048m -Xmx4096m -XX:MaxHeapSize=4096m %GRADLE_OPTS%
set JAVA_OPTS=-XX:MaxPermSize=2048m -Xmx4096m -XX:MaxHeapSize=4096m %JAVA_OPTS%
set DEFAULT_JVM_OPTS=-Xmx4096m -XX:MaxPermSize=2048m

Is there something I am missing? I really hope that my build isn't requiring more than 4 gigs of heap space.


The stack trace I get is as follows:


UNEXPECTED TOP-LEVEL ERROR:
java.lang.OutOfMemoryError: Java heap space
        at java.util.BitSet.initWords(BitSet.java:144)
        at java.util.BitSet.<init>(BitSet.java:139)
        at com.android.dx.ssa.SsaMethod.bitSetFromLabelList(SsaMethod.java:138)
        at com.android.dx.ssa.SsaBasicBlock.newFromRop(SsaBasicBlock.java:158)
        at com.android.dx.ssa.SsaMethod.convertRopToSsaBlocks(SsaMethod.java:174)
        at com.android.dx.ssa.SsaMethod.newFromRopMethod(SsaMethod.java:104)
        at com.android.dx.ssa.SsaConverter.convertToSsaMethod(SsaConverter.java:45)
        at com.android.dx.ssa.Optimizer.optimize(Optimizer.java:99)
        at com.android.dx.ssa.Optimizer.optimize(Optimizer.java:73)
        at com.android.dx.dex.cf.CfTranslator.processMethods(CfTranslator.java:273)
        at com.android.dx.dex.cf.CfTranslator.translate0(CfTranslator.java:134)
        at com.android.dx.dex.cf.CfTranslator.translate(CfTranslator.java:87)
        at com.android.dx.command.dexer.Main.processClass(Main.java:487)
        at com.android.dx.command.dexer.Main.processFileBytes(Main.java:459)
        at com.android.dx.command.dexer.Main.access$400(Main.java:67)
        at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:398)
        at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.ja
        at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:1
        at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:109)
        at com.android.dx.command.dexer.Main.processOne(Main.java:422)
        at com.android.dx.command.dexer.Main.processAllFiles(Main.java:333)
        at com.android.dx.command.dexer.Main.run(Main.java:209)
        at com.android.dx.command.dexer.Main.main(Main.java:174)
        at com.android.dx.command.Main.main(Main.java:91)

[Avram Lyon]

There is an undocumented field on dexOptions:

android {
    <snip>

    dexOptions {
        javaMaxHeapSize "4g"

    }
}

When in doubt, go read the source code. :) https://android.googlesource.com/platform/tools/build/+/master/builder/src/main/java/com/android/builder/DexOptions.java

This made our migration to Gradle possible. And a whole lot less finicky.

- Avram

Avram Lyon

Android wrangler | Scopely, Inc.

Refer The Smartest Person You Know And Pocket $5,000! 

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On Thu, Oct 17, 2013 at 3:10 PM, Justin Breitfeller <mrs...@gmail.com> wrote:

--

[Avram Lyon]

Technically, the source for this option is here: https://android.googlesource.com/platform/tools/build/+/master/gradle/src/main/groovy/com/android/build/gradle/internal/dsl/DexOptionsImpl.groovy

The com.android.build.gradle.internal.dsl package is likely the only complete definition we currently have of the full DSL, so just read through it for more tidbits. Like that we can’t specify heap in units larger than terabytes.

Avram Lyon

Android wrangler | Scopely, Inc.

Refer The Smartest Person You Know And Pocket $5,000! 

Learn more: scopely.com/referrals

[Justin Breitfeller]

Awesome. That fixed my problem. Guess I will be digging through this to see if there is a way to turn off manifest merging.

[Justin Breitfeller]

Do you know of a way that I can put this in the build.gradle file in my root directory so that it is applied to all of my projects?

[jiqing yao]

I was able to disable manifest merging by using this 

// disable merge manifest

android.applicationVariants.all { variant ->

    variant.processResources.manifestFile = file('AndroidManifest.xml')

    variant.processManifest.enabled=false

}

On Friday, October 18, 2013 9:58:55 AM UTC-4, Justin Breitfeller wrote: