stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8304164: jdk/classfile/CorpusTest.java still fails after JDK-8303910

Browse Source 
Reviewed-by: jpai
This commit is contained in:
Adam Sotona 2023-03-17 11:47:11 +00:00
parent 620564ac61
commit b2639e1d62
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/java.base/share/classes/jdk/internal/classfile/impl/ClassHierarchyImpl.java
View File

@ -110,6 +110,10 @@ public final class ClassHierarchyImpl {
public static final class CachedClassHierarchyResolver implements ClassHierarchyResolver {
//this instance should never appear in the cache nor leak out
private static final ClassHierarchyResolver.ClassHierarchyInfo NOPE =
new ClassHierarchyResolver.ClassHierarchyInfo(null, false, null);
private final Function<ClassDesc, InputStream> streamProvider;
private final Map<ClassDesc, ClassHierarchyResolver.ClassHierarchyInfo> resolvedCache;
@ -124,9 +128,11 @@ public final class ClassHierarchyImpl {
// empty ClInfo is stored in case of an exception to avoid repeated scanning failures
@Override
public ClassHierarchyResolver.ClassHierarchyInfo getClassInfo(ClassDesc classDesc) {
var res = resolvedCache.get(classDesc);
//additional test for null value is important to avoid repeated resolution attempts
if (res == null && !resolvedCache.containsKey(classDesc)) {
//using NOPE to distinguish between null value and non-existent record in the cache
//this code is on JDK bootstrap critical path, so cannot use lambdas here
var res = resolvedCache.getOrDefault(classDesc, NOPE);
if (res == NOPE) {
res = null;
var ci = streamProvider.apply(classDesc);
if (ci != null) {
try (var in = new DataInputStream(new BufferedInputStream(ci))) {