Anthony Maire created LOG4J2-1415:
-------------------------------------
Summary: When running in garbage-free mode, boxed primitive types
should be formatted without allocating
Key: LOG4J2-1415
URL: https://issues.apache.org/jira/browse/LOG4J2-1415
Project: Log4j 2
Issue Type: Improvement
Affects Versions: 2.6
Reporter: Anthony Maire
Priority: Minor
When using Log4j 2 through the SLF4J binding, the Unboxer mecanism is not
available and a parameterized message with a primitive type parameter will be
auto-boxed.
Then this boxed value will be formatted by
ParameterFormatter.recursiveDeepToString() and further allocations will happen
To lower allocation rate for SLF4J users,
ParameterFormatter.appendSpecialTypes() should handle boxed primitive types too.
{code}
private static boolean appendSpecialTypes(final Object o, final StringBuilder
str) {
...
} else if (o instanceof Long) {
str.append(((Long) o).longValue());
return true;
} else if (o instanceof Integer) {
str.append(((Integer) o).intValue());
return true;
} else if (o instanceof Double) {
str.append(((Double) o).doubleValue());
return true;
} // similarly for float, short, boolean and char.
...
}
{code}
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