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src/hotspot/share/classfile/classLoaderData.hpp
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@@ -35,10 +35,13 @@
#include "utilities/macros.hpp"
#if INCLUDE_JFR
#include "jfr/support/jfrTraceIdExtension.hpp"
#endif
+// external name (synthetic) for the primordial "bootstrap" class loader instance
+#define BOOTSTRAP_LOADER_NAME "bootstrap"
+#define BOOTSTRAP_LOADER_NAME_LEN 9
//
// A class loader represents a linkset. Conceptually, a linkset identifies
// the complete transitive closure of resolved links that a dynamic linker can
// produce.
@@ -256,13 +259,13 @@
GrowableArray<Metadata*>* _deallocate_list;
// Support for walking class loader data objects
ClassLoaderData* _next; /// Next loader_datas created
- // JFR support
Klass* _class_loader_klass;
- Symbol* _class_loader_name;
+ Symbol* _name;
+ Symbol* _name_and_id;
JFR_ONLY(DEFINE_TRACE_ID_FIELD;)
void set_next(ClassLoaderData* next) { _next = next; }
ClassLoaderData* next() const { return _next; }
@@ -360,12 +363,10 @@
void inc_keep_alive();
void dec_keep_alive();
void initialize_holder(Handle holder);
- inline unsigned int identity_hash() const { return (unsigned int)(((intptr_t)this) >> 3); }
-
void oops_do(OopClosure* f, bool must_claim, bool clear_modified_oops = false);
void classes_do(KlassClosure* klass_closure);
Klass* klasses() { return _klasses; }
@@ -375,11 +376,10 @@
void print() { print_on(tty); }
void print_on(outputStream* out) const PRODUCT_RETURN;
void print_value() { print_value_on(tty); }
void print_value_on(outputStream* out) const;
void verify();
- const char* loader_name() const;
OopHandle add_handle(Handle h);
void remove_handle(OopHandle h);
void init_handle_locked(OopHandle& pd, Handle h); // used for concurrent access to ModuleEntry::_pd field
void add_class(Klass* k, bool publicize = true);
@@ -398,19 +398,24 @@
static ClassLoaderData* class_loader_data(oop loader);
static ClassLoaderData* class_loader_data_or_null(oop loader);
static ClassLoaderData* anonymous_class_loader_data(Handle loader);
- // Returns Klass* of associated class loader, or NULL if associated loader is <bootstrap>.
+ // Returns Klass* of associated class loader, or NULL if associated loader is 'bootstrap'.
// Also works if unloading.
Klass* class_loader_klass() const { return _class_loader_klass; }
- // Returns Name of associated class loader.
- // Returns NULL if associated class loader is <bootstrap> or if no name has been set for
- // this loader.
- // Also works if unloading.
- Symbol* class_loader_name() const { return _class_loader_name; }
+ // Returns the class loader's explict name as specified during
+ // construction or the class loader's qualified class name.
+ // Works during unloading.
+ const char* loader_name() const;
+ // Returns the explicitly specified class loader name or NULL.
+ Symbol* name() const { return _name; }
+
+ // Obtain the class loader's _name_and_id, works during unloading.
+ const char* loader_name_and_id() const;
+ Symbol* name_and_id() const { return _name_and_id; }
JFR_ONLY(DEFINE_TRACE_ID_METHODS;)
};
// An iterator that distributes Klasses to parallel worker threads.
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