src/share/vm/memory/specialized_oop_closures.hpp
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rev 6796 : [mq]: templateOopIterate
@@ -28,175 +28,13 @@
#include "utilities/macros.hpp"
#if INCLUDE_ALL_GCS
#include "gc_implementation/g1/g1_specialized_oop_closures.hpp"
#endif // INCLUDE_ALL_GCS
-// The following OopClosure types get specialized versions of
-// "oop_oop_iterate" that invoke the closures' do_oop methods
-// non-virtually, using a mechanism defined in this file. Extend these
-// macros in the obvious way to add specializations for new closures.
-
-// Forward declarations.
-class OopClosure;
-class OopsInGenClosure;
-// DefNew
-class ScanClosure;
-class FastScanClosure;
-class FilteringClosure;
-// ParNew
-class ParScanWithBarrierClosure;
-class ParScanWithoutBarrierClosure;
-// CMS
-class MarkRefsIntoAndScanClosure;
-class Par_MarkRefsIntoAndScanClosure;
-class PushAndMarkClosure;
-class Par_PushAndMarkClosure;
-class PushOrMarkClosure;
-class Par_PushOrMarkClosure;
-class CMSKeepAliveClosure;
-class CMSInnerParMarkAndPushClosure;
-// Misc
-class NoHeaderExtendedOopClosure;
-
-// This macro applies an argument macro to all OopClosures for which we
-// want specialized bodies of "oop_oop_iterate". The arguments to "f" are:
-// "f(closureType, non_virtual)"
-// where "closureType" is the name of the particular subclass of OopClosure,
-// and "non_virtual" will be the string "_nv" if the closure type should
-// have its "do_oop" method invoked non-virtually, or else the
-// string "_v". ("OopClosure" itself will be the only class in the latter
-// category.)
-
-// This is split into several because of a Visual C++ 6.0 compiler bug
-// where very long macros cause the compiler to crash
-
-// Some other heap might define further specialized closures.
-#ifndef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES
-#define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \
- /* None */
-#endif
-
-#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_S(f) \
- f(ScanClosure,_nv) \
- f(FastScanClosure,_nv) \
- f(FilteringClosure,_nv)
-
-#if INCLUDE_ALL_GCS
-#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f) \
- f(ParScanWithBarrierClosure,_nv) \
- f(ParScanWithoutBarrierClosure,_nv)
-#else // INCLUDE_ALL_GCS
-#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f)
-#endif // INCLUDE_ALL_GCS
-
-#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(f) \
- f(NoHeaderExtendedOopClosure,_nv) \
- SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_S(f) \
- SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f)
-
-#if INCLUDE_ALL_GCS
-#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f) \
- f(MarkRefsIntoAndScanClosure,_nv) \
- f(Par_MarkRefsIntoAndScanClosure,_nv) \
- f(PushAndMarkClosure,_nv) \
- f(Par_PushAndMarkClosure,_nv) \
- f(PushOrMarkClosure,_nv) \
- f(Par_PushOrMarkClosure,_nv) \
- f(CMSKeepAliveClosure,_nv) \
- f(CMSInnerParMarkAndPushClosure,_nv) \
- FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f)
-#else // INCLUDE_ALL_GCS
-#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f)
-#endif // INCLUDE_ALL_GCS
-
-
-// We separate these out, because sometime the general one has
-// a different definition from the specialized ones, and sometimes it
-// doesn't.
-
-#define ALL_OOP_OOP_ITERATE_CLOSURES_1(f) \
- f(ExtendedOopClosure,_v) \
- SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(f)
-
-#define ALL_OOP_OOP_ITERATE_CLOSURES_2(f) \
- SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f)
-
-#if INCLUDE_ALL_GCS
-// This macro applies an argument macro to all OopClosures for which we
-// want specialized bodies of a family of methods related to
-// "par_oop_iterate". The arguments to f are the same as above.
-// The "root_class" is the most general class to define; this may be
-// "OopClosure" in some applications and "OopsInGenClosure" in others.
-
-#define SPECIALIZED_PAR_OOP_ITERATE_CLOSURES(f) \
- f(MarkRefsIntoAndScanClosure,_nv) \
- f(PushAndMarkClosure,_nv) \
- f(Par_MarkRefsIntoAndScanClosure,_nv) \
- f(Par_PushAndMarkClosure,_nv)
-
-#define ALL_PAR_OOP_ITERATE_CLOSURES(f) \
- f(ExtendedOopClosure,_v) \
- SPECIALIZED_PAR_OOP_ITERATE_CLOSURES(f)
-#endif // INCLUDE_ALL_GCS
-
-// This macro applies an argument macro to all OopClosures for which we
-// want specialized bodies of a family of methods related to
-// "oops_since_save_marks_do". The arguments to f are the same as above.
-// The "root_class" is the most general class to define; this may be
-// "OopClosure" in some applications and "OopsInGenClosure" in others.
-
-
-// Some other heap might define further specialized closures.
-#ifndef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES
-#define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) \
- /* None */
-#endif
-
-#define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_S(f) \
- f(ScanClosure,_nv) \
- f(FastScanClosure,_nv)
-
-#if INCLUDE_ALL_GCS
-#define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_P(f) \
- f(ParScanWithBarrierClosure,_nv) \
- f(ParScanWithoutBarrierClosure,_nv) \
- FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f)
-#else // INCLUDE_ALL_GCS
-#define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_P(f)
-#endif // INCLUDE_ALL_GCS
-
-#define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG(f) \
- SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_S(f) \
- SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_P(f)
-
-#define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) \
- SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG(f)
-
-// We separate these out, because sometime the general one has
-// a different definition from the specialized ones, and sometimes it
-// doesn't.
-// NOTE: One of the valid criticisms of this
-// specialize-oop_oop_iterate-for-specific-closures idiom is that it is
-// easy to have a silent performance bug: if you fail to de-virtualize,
-// things still work, just slower. The "SpecializationStats" mode is
-// intended to at least make such a failure easy to detect.
-// *Not* using the ALL_SINCE_SAVE_MARKS_CLOSURES(f) macro defined
-// below means that *only* closures for which oop_oop_iterate specializations
-// exist above may be applied to "oops_since_save_marks". That is,
-// this form of the performance bug is caught statically. When you add
-// a definition for the general type, this property goes away.
-// Make sure you test with SpecializationStats to find such bugs
-// when introducing a new closure where you don't want virtual dispatch.
-
-#define ALL_SINCE_SAVE_MARKS_CLOSURES(f) \
- f(OopsInGenClosure,_v) \
- SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f)
-
// For keeping stats on effectiveness.
#define ENABLE_SPECIALIZATION_STATS 0
-
class SpecializationStats {
public:
enum Kind {
ik, // InstanceKlass
irk, // InstanceRefKlass