src/share/vm/memory/specialized_oop_closures.hpp
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rev 6796 : [mq]: templateOopIterate
*** 28,202 ****
#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
--- 28,40 ----