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This commit is contained in:
Jon Masamitsu 2014-07-10 13:39:18 -07:00
commit fbe6d80096
108 changed files with 3239 additions and 5213 deletions
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26
hotspot/src/share/vm/classfile/classLoaderData.hpp
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@ -31,7 +31,6 @@
#include "memory/metaspaceCounters.hpp"
#include "runtime/mutex.hpp"
#include "utilities/growableArray.hpp"
#if INCLUDE_TRACE
# include "utilities/ticks.hpp"
#endif
@ -59,6 +58,7 @@ class Metadebug;
class ClassLoaderDataGraph : public AllStatic {
friend class ClassLoaderData;
friend class ClassLoaderDataGraphMetaspaceIterator;
friend class ClassLoaderDataGraphKlassIteratorAtomic;
friend class VMStructs;
private:
// All CLDs (except the null CLD) can be reached by walking _head->_next->...
@ -75,10 +75,16 @@ class ClassLoaderDataGraph : public AllStatic {
static ClassLoaderData* find_or_create(Handle class_loader, TRAPS);
static void purge();
static void clear_claimed_marks();
// oops do
static void oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim);
static void always_strong_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim);
static void keep_alive_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim);
static void always_strong_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim);
// cld do
static void cld_do(CLDClosure* cl);
static void roots_cld_do(CLDClosure* strong, CLDClosure* weak);
static void keep_alive_cld_do(CLDClosure* cl);
static void always_strong_cld_do(CLDClosure* cl);
// klass do
static void classes_do(KlassClosure* klass_closure);
static void classes_do(void f(Klass* const));
static void methods_do(void f(Method*));
@ -104,6 +110,7 @@ class ClassLoaderDataGraph : public AllStatic {
static void dump() { dump_on(tty); }
static void verify();
static bool unload_list_contains(const void* x);
#ifndef PRODUCT
static bool contains_loader_data(ClassLoaderData* loader_data);
#endif
@ -136,6 +143,7 @@ class ClassLoaderData : public CHeapObj<mtClass> {
};
friend class ClassLoaderDataGraph;
friend class ClassLoaderDataGraphKlassIteratorAtomic;
friend class ClassLoaderDataGraphMetaspaceIterator;
friend class MetaDataFactory;
friend class Method;
@ -195,7 +203,6 @@ class ClassLoaderData : public CHeapObj<mtClass> {
void unload();
bool keep_alive() const { return _keep_alive; }
bool is_alive(BoolObjectClosure* is_alive_closure) const;
void classes_do(void f(Klass*));
void loaded_classes_do(KlassClosure* klass_closure);
void classes_do(void f(InstanceKlass*));
@ -208,6 +215,9 @@ class ClassLoaderData : public CHeapObj<mtClass> {
MetaWord* allocate(size_t size);
public:
bool is_alive(BoolObjectClosure* is_alive_closure) const;
// Accessors
Metaspace* metaspace_or_null() const { return _metaspace; }
@ -293,6 +303,16 @@ class ClassLoaderData : public CHeapObj<mtClass> {
void initialize_shared_metaspaces();
};
// An iterator that distributes Klasses to parallel worker threads.
class ClassLoaderDataGraphKlassIteratorAtomic : public StackObj {
volatile Klass* _next_klass;
public:
ClassLoaderDataGraphKlassIteratorAtomic();
Klass* next_klass();
private:
static Klass* next_klass_in_cldg(Klass* klass);
};
class ClassLoaderDataGraphMetaspaceIterator : public StackObj {
ClassLoaderData* _data;
public: