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Sanity check szind on tcache flush.

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This adds some overhead to the tcache flush path (which is one of the
popular paths).  Guard it behind a config option.
This commit is contained in:
Qi Wang
2019-01-22 13:59:23 -08:00
committed by Qi Wang
parent b33eb26dee
commit e13400c919
3 changed files with 59 additions and 2 deletions
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16
configure.ac
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@@ -1403,6 +1403,22 @@ if test "x$enable_readlinkat" = "x1" ; then
fi
AC_SUBST([enable_readlinkat])
dnl Avoid the extra size checking by default
AC_ARG_ENABLE([extra-size-check],
[AS_HELP_STRING([--enable-extra-size-check],
[Perform additonal size related sanity checks])],
[if test "x$enable_extra_size_check" = "xno" ; then
enable_extra_size_check="0"
else
enable_extra_size_check="1"
fi
],
[enable_extra_size_check=="0"]
)
if test "x$enable_extra_size_check" = "x1" ; then
AC_DEFINE([JEMALLOC_EXTRA_SIZE_CHECK], [ ])
fi
AC_SUBST([enable_extra_size_check])
JE_COMPILABLE([a program using __builtin_unreachable], [
void foo (void) {