ExE Boss created XERCESJ-1742:
---------------------------------
Summary: Make `DatatypeException` stackless (JDK‑8283994)
Key: XERCESJ-1742
URL: https://issues.apache.org/jira/browse/XERCESJ-1742
Project: Xerces2-J
Issue Type: Improvement
Components: JAXP (javax.xml.validation)
Affects Versions: 2.12.2
Reporter: ExE Boss
See [JDK-8283994|https://bugs.openjdk.java.net/browse/JDK-8283994]:
{quote}
Profiling of SPECjvm2008:xml.validation shows there are lots of
InvalidateDataTypeValueExceptions are thrown from Xerces. See screenshot for
async-profiler stack trace.
It does not look like those exceptions leak outside javax.xml. The uses of
exception or its subclasses ({{InvalidDatatypeValueException}},
{{InvalidDatatypeFacetException}}) take the form of:
{code:java}
catch (InvalidDatatypeValueException ex) {
fErrorReporter.reportError(XMLMessageFormatter.XML_DOMAIN,
ex.getKey(),
ex.getArgs(),
XMLErrorReporter.SEVERITY_ERROR
);
}
{code}
...so they don't seem to use the stack traces: only key, args, message is used.
Which means we can turn {{DatatypeException}} stackless, and save some cycles
on throws.
This improves xml.validation performance for about +3%.
{quote}
h2. Original attachments:
*
[xml-validation-exceptions.png|https://bugs.openjdk.java.net/secure/attachment/98402/xml-validation-exceptions.png]
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