src/hotspot/share/gc/shared/specialized_oop_closures.hpp
author pliden
Tue, 12 Jun 2018 17:40:28 +0200
changeset 50525 767cdb97f103
parent 50035 af1923174c9b
permissions -rw-r--r--
8204210: Implementation: JEP 333: ZGC: A Scalable Low-Latency Garbage Collector (Experimental) Reviewed-by: pliden, stefank, eosterlund, ehelin, sjohanss, rbackman, coleenp, ihse, jgeorge, lmesnik, rkennke Contributed-by: per.liden@oracle.com, stefan.karlsson@oracle.com, erik.osterlund@oracle.com, mikael.gerdin@oracle.com, kim.barrett@oracle.com, nils.eliasson@oracle.com, rickard.backman@oracle.com, rwestrel@redhat.com, coleen.phillimore@oracle.com, robbin.ehn@oracle.com, gerard.ziemski@oracle.com, hugh.wilkinson@intel.com, sandhya.viswanathan@intel.com, bill.npo.wheeler@intel.com, vinay.k.awasthi@intel.com, yasuenag@gmail.com

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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#ifndef SHARE_VM_GC_SHARED_SPECIALIZED_OOP_CLOSURES_HPP
#define SHARE_VM_GC_SHARED_SPECIALIZED_OOP_CLOSURES_HPP

#include "utilities/macros.hpp"
#if INCLUDE_CMSGC
#include "gc/cms/cms_specialized_oop_closures.hpp"
#endif
#if INCLUDE_G1GC
#include "gc/g1/g1_specialized_oop_closures.hpp"
#endif
#if INCLUDE_SERIALGC
#include "gc/serial/serial_specialized_oop_closures.hpp"
#endif
#if INCLUDE_ZGC
#include "gc/z/z_specialized_oop_closures.hpp"
#endif

// 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 ExtendedOopClosure;
class NoHeaderExtendedOopClosure;
class OopsInGenClosure;

// 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 ExtendedOopClosure,
// 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".  ("ExtendedOopClosure" 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

#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(f)                 \
  f(NoHeaderExtendedOopClosure,_nv)                               \
  SERIALGC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_S(f))        \
     CMSGC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f))

#define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f)                 \
  SERIALGC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_MS(f))       \
     CMSGC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_CMS(f))      \
      G1GC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_G1(f))       \
      G1GC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_G1FULL(f))   \
       ZGC_ONLY(SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_Z(f))

// 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)

#endif // SHARE_VM_GC_SHARED_SPECIALIZED_OOP_CLOSURES_HPP