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Use JEMALLOC_INTERNAL_FFSL in STATIC_PAGE_SHIFT test

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Mike Hommey 2014-06-04 12:12:55 +09:00 committed by Jason Evans
parent 1a3eafd1b0
commit 8f50ec8eda
1 changed files with 39 additions and 40 deletions
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79
configure.ac
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@ -935,6 +935,44 @@ if test "x$enable_xmalloc" = "x1" ; then
fi fi
AC_SUBST([enable_xmalloc]) AC_SUBST([enable_xmalloc])
dnl ============================================================================
dnl Check for __builtin_ffsl(), then ffsl(3), and fail if neither are found.
dnl One of those two functions should (theoretically) exist on all platforms
dnl that jemalloc currently has a chance of functioning on without modification.
dnl We additionally assume ffs() or __builtin_ffs() are defined if
dnl ffsl() or __builtin_ffsl() are defined, respectively.
JE_COMPILABLE([a program using __builtin_ffsl], [
#include <stdio.h>
#include <strings.h>
#include <string.h>
], [
{
int rv = __builtin_ffsl(0x08);
printf("%d\n", rv);
}
], [je_cv_gcc_builtin_ffsl])
if test "x${je_cv_gcc_builtin_ffsl}" == "xyes" ; then
AC_DEFINE([JEMALLOC_INTERNAL_FFSL], [__builtin_ffsl])
AC_DEFINE([JEMALLOC_INTERNAL_FFS], [__builtin_ffs])
else
JE_COMPILABLE([a program using ffsl], [
#include <stdio.h>
#include <strings.h>
#include <string.h>
], [
{
int rv = ffsl(0x08);
printf("%d\n", rv);
}
], [je_cv_function_ffsl])
if test "x${je_cv_function_ffsl}" == "xyes" ; then
AC_DEFINE([JEMALLOC_INTERNAL_FFSL], [ffsl])
AC_DEFINE([JEMALLOC_INTERNAL_FFS], [ffs])
else
AC_MSG_ERROR([Cannot build without ffsl(3) or __builtin_ffsl()])
fi
fi
AC_CACHE_CHECK([STATIC_PAGE_SHIFT], AC_CACHE_CHECK([STATIC_PAGE_SHIFT],
[je_cv_static_page_shift], [je_cv_static_page_shift],
AC_RUN_IFELSE([AC_LANG_PROGRAM( AC_RUN_IFELSE([AC_LANG_PROGRAM(
@ -961,7 +999,7 @@ AC_CACHE_CHECK([STATIC_PAGE_SHIFT],
if (result == -1) { if (result == -1) {
return 1; return 1;
} }
result = ffsl(result) - 1; result = JEMALLOC_INTERNAL_FFSL(result) - 1;
f = fopen("conftest.out", "w"); f = fopen("conftest.out", "w");
if (f == NULL) { if (f == NULL) {
@ -1108,45 +1146,6 @@ elif test "x${force_tls}" = "x1" ; then
AC_MSG_ERROR([Failed to configure TLS, which is mandatory for correct function]) AC_MSG_ERROR([Failed to configure TLS, which is mandatory for correct function])
fi fi
dnl ============================================================================
dnl Check for __builtin_ffsl(), then ffsl(3), and fail if neither are found.
dnl One of those two functions should (theoretically) exist on all platforms
dnl that jemalloc currently has a chance of functioning on without modification.
dnl We additionally assume ffs() or __builtin_ffs() are defined if
dnl ffsl() or __builtin_ffsl() are defined, respectively.
JE_COMPILABLE([a program using __builtin_ffsl], [
#include <stdio.h>
#include <strings.h>
#include <string.h>
], [
{
int rv = __builtin_ffsl(0x08);
printf("%d\n", rv);
}
], [je_cv_gcc_builtin_ffsl])
if test "x${je_cv_gcc_builtin_ffsl}" == "xyes" ; then
AC_DEFINE([JEMALLOC_INTERNAL_FFSL], [__builtin_ffsl])
AC_DEFINE([JEMALLOC_INTERNAL_FFS], [__builtin_ffs])
else
JE_COMPILABLE([a program using ffsl], [
#include <stdio.h>
#include <strings.h>
#include <string.h>
], [
{
int rv = ffsl(0x08);
printf("%d\n", rv);
}
], [je_cv_function_ffsl])
if test "x${je_cv_function_ffsl}" == "xyes" ; then
AC_DEFINE([JEMALLOC_INTERNAL_FFSL], [ffsl])
AC_DEFINE([JEMALLOC_INTERNAL_FFS], [ffs])
else
AC_MSG_ERROR([Cannot build without ffsl(3) or __builtin_ffsl()])
fi
fi
dnl ============================================================================ dnl ============================================================================
dnl Check for atomic(9) operations as provided on FreeBSD. dnl Check for atomic(9) operations as provided on FreeBSD.