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dnl This Source Code Form is subject to the terms of the Mozilla Public

dnl License, v. 2.0. If a copy of the MPL was not distributed with this

dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.

dnl Check for the existence of various allocation headers/functions

AC_DEFUN([MOZ_CHECK_ALLOCATOR],[

MALLOC_HEADERS="malloc.h malloc_np.h malloc/malloc.h sys/malloc.h"

MALLOC_H=

for file in $MALLOC_HEADERS; do

  MOZ_CHECK_HEADER($file, [MALLOC_H=$file])

  if test "$MALLOC_H" != ""; then

    AC_DEFINE_UNQUOTED(MALLOC_H, <$MALLOC_H>)

    break

fi

done

MALLOC_USABLE_SIZE_CONST_PTR=const

if test -n "$HAVE_MALLOC_H"; then

  AC_CACHE_CHECK([whether malloc_usable_size definition can use const argument],

                 moz_cv_malloc_usable_size_constness,

                 [AC_TRY_COMPILE([#include <malloc.h>

                                  #include <stddef.h>

                                  size_t malloc_usable_size(const void *ptr);],

                                 [return malloc_usable_size(0);],

                                 [moz_cv_malloc_usable_size_constness=yes],

                                 [moz_cv_malloc_usable_size_constness=no])])

  if test "$moz_cv_malloc_usable_size_constness" = no ; then

    MALLOC_USABLE_SIZE_CONST_PTR=

fi

fi

AC_DEFINE_UNQUOTED([MALLOC_USABLE_SIZE_CONST_PTR],[$MALLOC_USABLE_SIZE_CONST_PTR])

dnl In newer bionic headers, valloc is built but not defined,

dnl so we check more carefully here.

AC_MSG_CHECKING([for valloc in malloc.h])

AC_EGREP_HEADER(valloc, malloc.h,

                AC_DEFINE(HAVE_VALLOC)

                AC_MSG_RESULT([yes]),

                AC_MSG_RESULT([no]))

AC_MSG_CHECKING([for valloc in unistd.h])

AC_EGREP_HEADER(valloc, unistd.h,

                AC_DEFINE(HAVE_VALLOC)

                AC_MSG_RESULT([yes]),

                AC_MSG_RESULT([no]))

AC_MSG_CHECKING([for _aligned_malloc in malloc.h])

AC_EGREP_HEADER(_aligned_malloc, malloc.h,

                AC_DEFINE(HAVE_ALIGNED_MALLOC)

                AC_MSG_RESULT([yes]),

                AC_MSG_RESULT([no]))

])