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Add a fastpath for arena_slab_reg_alloc_batch

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Also adds a configure.ac check for __builtin_popcount, which is used
in the new fastpath.
This commit is contained in:
Dave Watson
2018-10-29 16:01:09 -07:00
parent 17aa470760
commit 13c237c7ef
4 changed files with 78 additions and 11 deletions
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17
configure.ac
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@@ -1429,6 +1429,21 @@ else
fi
fi
JE_COMPILABLE([a program using __builtin_popcountl], [
#include <stdio.h>
#include <strings.h>
#include <string.h>
], [
{
int rv = __builtin_popcountl(0x08);
printf("%d\n", rv);
}
], [je_cv_gcc_builtin_popcountl])
if test "x${je_cv_gcc_builtin_popcountl}" = "xyes" ; then
AC_DEFINE([JEMALLOC_INTERNAL_POPCOUNT], [__builtin_popcount])
AC_DEFINE([JEMALLOC_INTERNAL_POPCOUNTL], [__builtin_popcountl])
fi
AC_ARG_WITH([lg_quantum],
[AS_HELP_STRING([--with-lg-quantum=<lg-quantum>],
[Base 2 log of minimum allocation alignment])],
@@ -1901,7 +1916,7 @@ if test "x${je_cv_madvise}" = "xyes" ; then
if test "x${je_cv_madv_dontdump}" = "xyes" ; then
AC_DEFINE([JEMALLOC_MADVISE_DONTDUMP], [ ])
fi
dnl Check for madvise(..., MADV_[NO]HUGEPAGE).
JE_COMPILABLE([madvise(..., MADV_[[NO]]HUGEPAGE)], [
#include <sys/mman.h>