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Add configuration option controlling DSS support #2476

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merged 1 commit into from
Aug 3, 2023
Merged

Add configuration option controlling DSS support #2476

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15 changes: 14 additions & 1 deletion configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -1460,6 +1460,18 @@ if test "x$zero_realloc_default_free" = "x1" ; then
AC_DEFINE([JEMALLOC_ZERO_REALLOC_DEFAULT_FREE], [ ], [ ])
fi

dnl Support allocation from DSS by default
AC_ARG_ENABLE([dss],
[AS_HELP_STRING([--disable-dss], [Disable usage of sbrk(2)])],
[if test "x$enable_dss" = "xno" ; then
enable_dss="0"
else
enable_dss="1"
fi
],
[enable_dss="1"]
)

dnl Enable allocation from DSS if supported by the OS.
have_dss="1"
dnl Check whether the BSD/SUSv1 sbrk() exists. If not, disable DSS support.
Expand All @@ -1473,7 +1485,7 @@ else
have_dss="0"
fi

if test "x$have_dss" = "x1" ; then
if test "x$have_dss" = "x1" -a "x$enable_dss" = "x1" ; then
AC_DEFINE([JEMALLOC_DSS], [ ], [ ])
fi

Expand Down Expand Up @@ -2782,4 +2794,5 @@ AC_MSG_RESULT([lazy_lock : ${enable_lazy_lock}])
AC_MSG_RESULT([cache-oblivious : ${enable_cache_oblivious}])
AC_MSG_RESULT([pageid : ${enable_pageid}])
AC_MSG_RESULT([cxx : ${enable_cxx}])
AC_MSG_RESULT([dss : ${enable_dss}])
AC_MSG_RESULT([===============================================================================])