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6684579: SoftReference processing can be made more efficient Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not. Reviewed-by: jmasa
author ysr
date Thu, 20 Nov 2008 16:56:09 -0800
parents 4d20a3aaf1ab
children acba6af809c8
line wrap: on
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#
# Copyright 1998-2008 Sun Microsystems, Inc.  All Rights Reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# 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).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
# CA 95054 USA or visit www.sun.com if you need additional information or
# have any questions.
#  
#

# Sets make macros for making optimized version of Gamma VM
# (This is the "product", not the "release" version.)

# Compiler specific OPT_CFLAGS are passed in from gcc.make, sparcWorks.make
OPT_CFLAGS/DEFAULT= $(OPT_CFLAGS)
OPT_CFLAGS/BYFILE = $(OPT_CFLAGS/$@)$(OPT_CFLAGS/DEFAULT$(OPT_CFLAGS/$@))

# (OPT_CFLAGS/SLOWER is also available, to alter compilation of buggy files)
ifeq ("${Platform_compiler}", "sparcWorks")

# Problem with SS12 compiler, dtrace doesn't like the .o files  (bug 6693876)
ifeq ($(COMPILER_REV_NUMERIC),509)
  # Not clear this workaround could be skipped in some cases.
  OPT_CFLAGS/vmGCOperations.o = $(OPT_CFLAGS/SLOWER) -g
  OPT_CFLAGS/java.o = $(OPT_CFLAGS/SLOWER) -g
  OPT_CFLAGS/jni.o = $(OPT_CFLAGS/SLOWER) -g
endif

# Workaround SS11 bug 6345274 (all platforms) (Fixed in SS11 patch and SS12)
ifeq ($(COMPILER_REV_NUMERIC),508))
OPT_CFLAGS/ciTypeFlow.o = $(OPT_CFLAGS/O2)
endif # COMPILER_REV_NUMERIC == 508

endif # Platform_compiler == sparcWorks

# If you set HOTSPARC_GENERIC=yes, you disable all OPT_CFLAGS settings
CFLAGS$(HOTSPARC_GENERIC) += $(OPT_CFLAGS/BYFILE)

# Linker mapfiles
# NOTE: inclusion of nonproduct mapfile not necessary; read it for details
MAPFILE = $(GAMMADIR)/make/solaris/makefiles/mapfile-vers \
          $(GAMMADIR)/make/solaris/makefiles/mapfile-vers-nonproduct

# This mapfile is only needed when compiling with dtrace support, 
# and mustn't be otherwise.
MAPFILE_DTRACE = $(GAMMADIR)/make/solaris/makefiles/mapfile-vers-$(TYPE)

# Set the environment variable HOTSPARC_GENERIC to "true"
# to inhibit the effect of the previous line on CFLAGS.

G_SUFFIX =
VERSION = optimized