git: openjdk/leyden: premain: 3 new changesets

[Vladimir Ivanov]

Nice work, Ashutosh!

I gave it a try. It works fine in product build (<1k downcalls into 
JVM_FindClass* on PetClinic), but with fastdebug build it hits an assert 
during SystemDictionaryShared::create_loader_positive_lookup_cache() [1].

Best regards,
Vladimir Ivanov

[1]
diff --git a/src/hotspot/share/cds/dumpTimeClassInfo.inline.hpp 
b/src/hotspot/share/cds/dumpTimeClassInfo.inline.hpp
index 6b46fe58916..d118400b25f 100644
--- a/src/hotspot/share/cds/dumpTimeClassInfo.inline.hpp
+++ b/src/hotspot/share/cds/dumpTimeClassInfo.inline.hpp
@@ -43,7 +43,7 @@
  template<typename Function>
  void DumpTimeSharedClassTable::iterate_all_live_classes(Function 
function) const {
    auto wrapper = [&] (InstanceKlass* k, DumpTimeClassInfo& info) {
-    assert(SafepointSynchronize::is_at_safepoint(), "invariant");
+//    assert(SafepointSynchronize::is_at_safepoint(), "invariant");
      assert_lock_strong(DumpTimeTable_lock);
      if (CDSConfig::is_dumping_final_static_archive() && !k->is_loaded()) {
        assert(k->is_shared_unregistered_class(), "must be");


On 2/14/24 13:19, duke wrote:
> Changeset: b58e0e37
> Author:    Ashutosh Mehra <asmehra at redhat.com>
> Date:      2024-01-24 14:09:45 +0000
> URL:       https://git.openjdk.org/leyden/commit/b58e0e3738d803b51bd4ef25b30746048adcab40
> 
> Add negative cache for built-in loaders
> 
> Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>
> 
> ! src/java.base/share/classes/java/lang/Class.java
> ! src/java.base/share/classes/jdk/internal/loader/BuiltinClassLoader.java
> 
> Changeset: 393f79de
> Author:    Ashutosh Mehra <asmehra at redhat.com>
> Date:      2024-01-31 13:48:14 +0000
> URL:       https://git.openjdk.org/leyden/commit/393f79de5204a103bd60334e2910b9857639ad26
> 
> Persist loader negative cache in CDS archive
> 
> Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>
> 
> ! src/hotspot/share/cds/classListParser.cpp
> ! src/hotspot/share/cds/classListParser.hpp
> ! src/hotspot/share/cds/classListWriter.cpp
> ! src/hotspot/share/cds/classListWriter.hpp
> ! src/hotspot/share/runtime/java.cpp
> ! src/java.base/share/classes/java/lang/Class.java
> ! src/java.base/share/classes/jdk/internal/loader/BuiltinClassLoader.java
> 
> Changeset: 361fc8b0
> Author:    Ashutosh Mehra <asmehra at redhat.com>
> Date:      2024-02-09 12:35:14 +0000
> URL:       https://git.openjdk.org/leyden/commit/361fc8b0af9512ced9dfee6b348de01191b0a7fa
> 
> Positive lookup cache for built-in loaders and some cleanup
> 
> Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>
> 
> ! src/hotspot/share/cds/cds_globals.hpp
> ! src/hotspot/share/cds/classListParser.cpp
> ! src/hotspot/share/cds/classListWriter.cpp
> ! src/hotspot/share/cds/metaspaceShared.cpp
> ! src/hotspot/share/classfile/systemDictionaryShared.cpp
> ! src/hotspot/share/classfile/systemDictionaryShared.hpp
> ! src/java.base/share/classes/java/lang/Class.java
> ! src/java.base/share/classes/jdk/internal/loader/BuiltinClassLoader.java
>