# HG changeset patch
# User goetz
# Date 1504214303 14400
# Node ID 1deb34f59d8e3e2b7c9e52c98b8a55904b797b0b
# Parent  adc5bb7e013167f36a9ab25c576797c106c771d3
8186978: Introduce configure argument enable-cds
Reviewed-by: dholmes, erikj, ihse

diff -r adc5bb7e0131 -r 1deb34f59d8e common/autoconf/configure.ac
--- a/common/autoconf/configure.ac	Thu Aug 31 16:29:54 2017 +0200
+++ b/common/autoconf/configure.ac	Thu Aug 31 17:18:23 2017 -0400
@@ -209,6 +209,7 @@
 # Need toolchain to setup dtrace
 HOTSPOT_SETUP_DTRACE
 HOTSPOT_ENABLE_DISABLE_AOT
+HOTSPOT_ENABLE_DISABLE_CDS
 HOTSPOT_ENABLE_DISABLE_GTEST
 
 ###############################################################################
diff -r adc5bb7e0131 -r 1deb34f59d8e common/autoconf/generated-configure.sh
--- a/common/autoconf/generated-configure.sh	Thu Aug 31 16:29:54 2017 +0200
+++ b/common/autoconf/generated-configure.sh	Thu Aug 31 17:18:23 2017 -0400
@@ -702,6 +702,7 @@
 FIXPATH_DETACH_FLAG
 FIXPATH
 BUILD_GTEST
+ENABLE_CDS
 ENABLE_AOT
 GCOV_ENABLED
 ZIP_EXTERNAL_DEBUG_SYMBOLS
@@ -1191,6 +1192,7 @@
 enable_native_coverage
 enable_dtrace
 enable_aot
+enable_cds
 enable_hotspot_gtest
 with_stdc__lib
 with_msvcr_dll
@@ -1999,6 +2001,8 @@
                           enable ahead of time compilation feature. Default is
                           auto, where aot is enabled if all dependencies are
                           present.
+  --enable-cds[=yes/no]   enable class data sharing feature in non-minimal VM.
+                          Default is yes.
   --disable-hotspot-gtest Disables building of the Hotspot unit tests
   --disable-freetype-bundling
                           disable bundling of the freetype library with the
@@ -2016,7 +2020,8 @@
   --disable-generate-classlist
                           forces enabling or disabling of the generation of a
                           CDS classlist at build time. Default is to generate
-                          it when either the server or client JVMs are built.
+                          it when either the server or client JVMs are built
+                          and enable-cds is true.
   --enable-sjavac         use sjavac to do fast incremental compiles
                           [disabled]
   --disable-javac-server  disable javac server [enabled]
@@ -4345,6 +4350,11 @@
 #
 
 
+################################################################################
+# Allow to disable CDS
+#
+
+
 ###############################################################################
 # Set up all JVM features for each JVM variant.
 #
@@ -5151,7 +5161,7 @@
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1504027321
+DATE_WHEN_GENERATED=1504214237
 
 ###############################################################################
 #
@@ -54204,6 +54214,23 @@
 
 
 
+  # Check whether --enable-cds was given.
+if test "${enable_cds+set}" = set; then :
+  enableval=$enable_cds;
+fi
+
+
+  if test "x$enable_cds" = "x" || test "x$enable_cds" = "xyes"; then
+    ENABLE_CDS="true"
+  elif test "x$enable_cds" = "xno"; then
+    ENABLE_CDS="false"
+  else
+    as_fn_error $? "Invalid value for --enable-cds: $enable_cds" "$LINENO" 5
+  fi
+
+
+
+
   # Check whether --enable-hotspot-gtest was given.
 if test "${enable_hotspot_gtest+set}" = set; then :
   enableval=$enable_hotspot_gtest;
@@ -65848,7 +65875,10 @@
   fi
 
   # All variants but minimal (and custom) get these features
-  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti fprof vm-structs jni-check services management all-gcs nmt cds"
+  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti fprof vm-structs jni-check services management all-gcs nmt"
+  if test "x$ENABLE_CDS" = "xtrue"; then
+    NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES cds"
+  fi
 
   # Enable features depending on variant.
   JVM_FEATURES_server="compiler1 compiler2 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci $JVM_FEATURES_aot $JVM_FEATURES_graal"
@@ -65952,7 +65982,7 @@
 
   # Check if it's likely that it's possible to generate the classlist. Depending
   # on exact jvm configuration it could be possible anyway.
-  if   [[ " $JVM_VARIANTS " =~ " server " ]]   ||   [[ " $JVM_VARIANTS " =~ " client " ]]  ; then
+  if test "x$ENABLE_CDS" = "xtrue" && (  [[ " $JVM_VARIANTS " =~ " server " ]]   ||   [[ " $JVM_VARIANTS " =~ " client " ]]  ); then
     ENABLE_GENERATE_CLASSLIST_POSSIBLE="true"
   else
     ENABLE_GENERATE_CLASSLIST_POSSIBLE="false"
@@ -65965,8 +65995,8 @@
 $as_echo "yes, forced" >&6; }
     ENABLE_GENERATE_CLASSLIST="true"
     if test "x$ENABLE_GENERATE_CLASSLIST_POSSIBLE" = "xfalse"; then
-      { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS" >&5
-$as_echo "$as_me: WARNING: Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS" >&2;}
+      { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS and enable-cds=$ENABLE_CDS" >&5
+$as_echo "$as_me: WARNING: Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS and enable-cds=$ENABLE_CDS" >&2;}
     fi
   elif test "x$enable_generate_classlist" = "xno"; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, forced" >&5
diff -r adc5bb7e0131 -r 1deb34f59d8e common/autoconf/hotspot.m4
--- a/common/autoconf/hotspot.m4	Thu Aug 31 16:29:54 2017 +0200
+++ b/common/autoconf/hotspot.m4	Thu Aug 31 17:18:23 2017 -0400
@@ -240,6 +240,25 @@
   AC_SUBST(ENABLE_AOT)
 ])
 
+################################################################################
+# Allow to disable CDS
+#
+AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_CDS],
+[
+  AC_ARG_ENABLE([cds], [AS_HELP_STRING([--enable-cds@<:@=yes/no@:>@],
+      [enable class data sharing feature in non-minimal VM. Default is yes.])])
+
+  if test "x$enable_cds" = "x" || test "x$enable_cds" = "xyes"; then
+    ENABLE_CDS="true"
+  elif test "x$enable_cds" = "xno"; then
+    ENABLE_CDS="false"
+  else
+    AC_MSG_ERROR([Invalid value for --enable-cds: $enable_cds])
+  fi
+
+  AC_SUBST(ENABLE_CDS)
+])
+
 ###############################################################################
 # Set up all JVM features for each JVM variant.
 #
@@ -378,7 +397,10 @@
   fi
 
   # All variants but minimal (and custom) get these features
-  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti fprof vm-structs jni-check services management all-gcs nmt cds"
+  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti fprof vm-structs jni-check services management all-gcs nmt"
+  if test "x$ENABLE_CDS" = "xtrue"; then
+    NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES cds"
+  fi                                            
 
   # Enable features depending on variant.
   JVM_FEATURES_server="compiler1 compiler2 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci $JVM_FEATURES_aot $JVM_FEATURES_graal"
diff -r adc5bb7e0131 -r 1deb34f59d8e common/autoconf/jdk-options.m4
--- a/common/autoconf/jdk-options.m4	Thu Aug 31 16:29:54 2017 +0200
+++ b/common/autoconf/jdk-options.m4	Thu Aug 31 17:18:23 2017 -0400
@@ -496,11 +496,12 @@
 [
   AC_ARG_ENABLE([generate-classlist], [AS_HELP_STRING([--disable-generate-classlist],
       [forces enabling or disabling of the generation of a CDS classlist at build time.
-      Default is to generate it when either the server or client JVMs are built.])])
+      Default is to generate it when either the server or client JVMs are built and
+      enable-cds is true.])])
 
   # Check if it's likely that it's possible to generate the classlist. Depending
   # on exact jvm configuration it could be possible anyway.
-  if HOTSPOT_CHECK_JVM_VARIANT(server) || HOTSPOT_CHECK_JVM_VARIANT(client); then
+  if test "x$ENABLE_CDS" = "xtrue" && (HOTSPOT_CHECK_JVM_VARIANT(server) || HOTSPOT_CHECK_JVM_VARIANT(client)); then
     ENABLE_GENERATE_CLASSLIST_POSSIBLE="true"
   else
     ENABLE_GENERATE_CLASSLIST_POSSIBLE="false"
@@ -511,7 +512,7 @@
     AC_MSG_RESULT([yes, forced])
     ENABLE_GENERATE_CLASSLIST="true"
     if test "x$ENABLE_GENERATE_CLASSLIST_POSSIBLE" = "xfalse"; then
-      AC_MSG_WARN([Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS])
+      AC_MSG_WARN([Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS and enable-cds=$ENABLE_CDS])
     fi
   elif test "x$enable_generate_classlist" = "xno"; then
     AC_MSG_RESULT([no, forced])