On Wed, 21 Feb 2024 19:10:16 GMT, Calvin Cheung <[email protected]> wrote:
> To avoid the CDS dump error message, a fix is during dumping a classlist,
> check if an invoker can be archived.
> If not, don't write the invoker info into the classlist, i.e. don't call
> `logLambdaFormInvoker()`. While generating holder classes (in
> `generateHolderClasses()`), don't add the `MethodType` to the `invokerTypes`
> if will fail the check in the `build()` method which would result in a
> `RuntimeException`.
>
> Also updated the `MethodHandlesInvokersTest.java` under
> `appcds/methodHandles` and `appcds/dynamicArchive/methodHandles` to check
> that the "Failed to generate LambdaForm holder classes" error is not in the
> output;
>
> Passed tiers 1 - 3 testing.
src/java.base/share/classes/java/lang/invoke/GenerateJLIClassesHelper.java line
333:
> 331: .warning("Invalid
> LF_RESOLVE " + parts[1] + " " + parts[2] + " " + parts[3]);
> 332: }
> 333: }
The underlying cause of the failure in CDS is
[JDK-8327499](https://bugs.openjdk.org/browse/JDK-8327499) --
MethodHandleStatics.traceLambdaForm() includes methods that cannot be handle by
GenerateJLIClassesHelper.java.
Therefore, I think the warning should always be printed (e.g., when
jdk.tools.jlink.internal.plugins.GenerateJLIClassesPlugin is used during the
JDK build).
Also, maybe add a comment above line 326:
// Work around JDK-8327499
src/java.base/share/classes/jdk/internal/misc/CDS.java line 127:
> 125: */
> 126: public static void traceLambdaFormInvoker(String prefix, String
> holder, String name, String type, MethodType mt) {
> 127: if (isDumpingClassList && isInvokerArchivable(mt, holder)) {
Is this check still needed after you added the filtering in
GenerateJLIClassesHelper.java?
Since the logic here is not 100% the same as the logic in
GenerateJLIClassesHelper.java, we might be filtering more things than necessary.
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/17953#discussion_r1515211752
PR Review Comment: https://git.openjdk.org/jdk/pull/17953#discussion_r1515214286
