1 files changed, 114 insertions, 0 deletions
diff --git a/build/autoconf/jemalloc.m4 b/build/autoconf/jemalloc.m4
new file mode 100644
index 0000000000..3b9c603f75
--- /dev/null
+++ b/build/autoconf/jemalloc.m4
@@ -0,0 +1,114 @@
+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/.
+
+AC_DEFUN([MOZ_SUBCONFIGURE_JEMALLOC], [
+
+if test "$MOZ_BUILD_APP" != js -o -n "$JS_STANDALONE"; then
+
+  # Run jemalloc configure script
+
+  if test -z "$MOZ_SYSTEM_JEMALLOC" -a "$MOZ_MEMORY" && test -n "$MOZ_JEMALLOC4" -o -n "$MOZ_REPLACE_MALLOC"; then
+    ac_configure_args="--build=$build --host=$target --enable-stats --with-jemalloc-prefix=je_ --disable-valgrind"
+    # We're using memalign for _aligned_malloc in memory/build/mozmemory_wrap.c
+    # on Windows, so just export memalign on all platforms.
+    ac_configure_args="$ac_configure_args ac_cv_func_memalign=yes"
+    if test -n "$MOZ_REPLACE_MALLOC"; then
+      # When using replace_malloc, we always want valloc exported from jemalloc.
+      ac_configure_args="$ac_configure_args ac_cv_func_valloc=yes"
+      if test "${OS_ARCH}" = Darwin; then
+        # We also need to enable pointer validation on Mac because jemalloc's
+        # zone allocator is not used.
+        ac_configure_args="$ac_configure_args --enable-ivsalloc"
+      fi
+    fi
+    if test -n "$MOZ_JEMALLOC4"; then
+      case "${OS_ARCH}" in
+        WINNT|Darwin)
+          # We want jemalloc functions to be kept hidden on both Mac and Windows
+          # See memory/build/mozmemory_wrap.h for details.
+          ac_configure_args="$ac_configure_args --without-export"
+          ;;
+      esac
+      if test "${OS_ARCH}" = WINNT; then
+        # Lazy lock initialization doesn't play well with lazy linking of
+        # mozglue.dll on Windows XP (leads to startup crash), so disable it.
+        ac_configure_args="$ac_configure_args --disable-lazy-lock"
+
+        # 64-bit Windows builds require a minimum 16-byte alignment.
+        if test -n "$HAVE_64BIT_BUILD"; then
+          ac_configure_args="$ac_configure_args --with-lg-tiny-min=4"
+        fi
+      fi
+    elif test "${OS_ARCH}" = Darwin; then
+      # When building as a replace-malloc lib, disabling the zone allocator
+      # forces to use pthread_atfork.
+      ac_configure_args="$ac_configure_args --disable-zone-allocator"
+    fi
+    _MANGLE="malloc posix_memalign aligned_alloc calloc realloc free memalign valloc malloc_usable_size"
+    JEMALLOC_WRAPPER=
+    if test -z "$MOZ_REPLACE_MALLOC"; then
+      case "$OS_ARCH" in
+        Linux|DragonFly|FreeBSD|NetBSD|OpenBSD)
+          MANGLE=$_MANGLE
+          ;;
+      esac
+    elif test -z "$MOZ_JEMALLOC4"; then
+      MANGLE=$_MANGLE
+      JEMALLOC_WRAPPER=replace_
+    fi
+    if test -n "$MANGLE"; then
+      MANGLED=
+      for mangle in ${MANGLE}; do
+        if test -n "$MANGLED"; then
+          MANGLED="$mangle:$JEMALLOC_WRAPPER$mangle,$MANGLED"
+        else
+          MANGLED="$mangle:$JEMALLOC_WRAPPER$mangle"
+        fi
+      done
+      ac_configure_args="$ac_configure_args --with-mangling=$MANGLED"
+    fi
+    unset CONFIG_FILES
+    if test -z "$MOZ_TLS"; then
+      ac_configure_args="$ac_configure_args --disable-tls"
+    fi
+    EXTRA_CFLAGS="$CFLAGS"
+    for var in AS CC CXX CPP LD AR RANLIB STRIP CPPFLAGS EXTRA_CFLAGS LDFLAGS; do
+      ac_configure_args="$ac_configure_args $var='`eval echo \\${${var}}`'"
+    done
+
+    # jemalloc's configure assumes that if you have CFLAGS set at all, you set
+    # all the flags necessary to configure jemalloc, which is not likely to be
+    # the case on Windows if someone is building Firefox with flags set in
+    # their mozconfig.
+    if test "$_MSC_VER"; then
+       ac_configure_args="$ac_configure_args CFLAGS="
+    fi
+
+    # Force disable DSS support in jemalloc.
+    ac_configure_args="$ac_configure_args ac_cv_func_sbrk=false"
+
+    # Make Linux builds munmap freed chunks instead of recycling them.
+    ac_configure_args="$ac_configure_args --enable-munmap"
+
+    # Disable cache oblivious behavior that appears to have a performance
+    # impact on Firefox.
+    ac_configure_args="$ac_configure_args --disable-cache-oblivious"
+
+    if ! test -e memory/jemalloc; then
+      mkdir -p memory/jemalloc
+    fi
+
+    # jemalloc's configure runs git to determine the version. But when building
+    # from a gecko git clone, the git commands it uses is going to pick gecko's
+    # information, not jemalloc's, which is useless. So pretend we don't have git
+    # at all. That will make jemalloc's configure pick the in-tree VERSION file.
+    (PATH="$srcdir/memory/jemalloc/helper:$PATH";
+    AC_OUTPUT_SUBDIRS(memory/jemalloc/src)
+    ) || exit 1
+    ac_configure_args="$_SUBDIR_CONFIG_ARGS"
+  fi
+
+fi
+
+])