Remove support for making jemalloc4 the default memory allocator.

build/autoconf/jemalloc.m4

@@ -8,7 +8,7 @@ if test "$MOZ_BUILD_APP" != js -o -n "$JS_STANDALONE"; then
 
   # Run jemalloc configure script
 
-  if test "$MOZ_MEMORY" && test -n "$MOZ_JEMALLOC4" -o -n "$MOZ_REPLACE_MALLOC"; then
+  if test "$MOZ_MEMORY" && test -n "$MOZ_REPLACE_MALLOC"; then
     ac_configure_args="--build=$build --host=$target --enable-stats --with-jemalloc-prefix=je_ --disable-valgrind"
     # We're using memalign for _aligned_malloc in memory/build/mozmemory_wrap.c
     # on Windows, so just export memalign on all platforms.
@@ -22,41 +22,8 @@ if test "$MOZ_BUILD_APP" != js -o -n "$JS_STANDALONE"; then
         ac_configure_args="$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
+    MANGLE="malloc posix_memalign aligned_alloc calloc realloc free memalign valloc malloc_usable_size"
+    JEMALLOC_WRAPPER=replace_
     if test -n "$MANGLE"; then
       MANGLED=
       for mangle in ${MANGLE}; do

build/moz.configure/memory.configure

@@ -5,12 +5,13 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 
-option(env='MOZ_JEMALLOC4', help='Enable jemalloc 4')
-imply_option('--enable-jemalloc', depends_if('MOZ_JEMALLOC4')(lambda x: '4'))
+@deprecated_option(env='MOZ_JEMALLOC4')
+def moz_jemalloc4(value):
+    die('MOZ_JEMALLOC4 is no longer supported')
 
 
-option('--enable-jemalloc', nargs='?', choices=('4', 'moz'), env='MOZ_MEMORY',
-       help='Replace memory allocator with jemalloc')
+option('--enable-jemalloc', env='MOZ_MEMORY',
+       help='Replace system memory allocator with jemalloc')
 
 @depends('--enable-jemalloc', target, build_project, c_compiler)
 def jemalloc(value, target, build_project, c_compiler):
@@ -30,36 +31,25 @@ def jemalloc(value, target, build_project, c_compiler):
     if target.kernel == 'Linux':
         return True
 
-@depends('--enable-jemalloc')
-def jemalloc4(jemalloc):
-    if len(jemalloc) and jemalloc[0] == '4':
-        return True
-
 
 set_config('MOZ_MEMORY', jemalloc)
 set_define('MOZ_MEMORY', jemalloc)
 add_old_configure_assignment('MOZ_MEMORY', jemalloc)
 
-set_config('MOZ_JEMALLOC4', jemalloc4)
-set_define('MOZ_JEMALLOC4', jemalloc4)
-add_old_configure_assignment('MOZ_JEMALLOC4', jemalloc4)
-
 
 # Because --enable-jemalloc doesn't use a default because of the dependency
 # on the target, we can't use a js_option for it to propagate to js/src
 # through the old-configure.
-@depends(jemalloc, jemalloc4)
-def jemalloc_for_old_configure(jemalloc, jemalloc4):
-    if jemalloc:
-        return '--enable-jemalloc=4' if jemalloc4 else '--enable-jemalloc'
-    return '--disable-jemalloc'
+@depends(jemalloc)
+def jemalloc_for_old_configure(jemalloc):
+    return '--%s-jemalloc' % ('enable' if jemalloc else 'disable')
 
 add_old_configure_arg(jemalloc_for_old_configure)
 
 
-@depends(jemalloc, jemalloc4, target)
-def jemalloc_os_define(jemalloc, jemalloc4, target):
-    if jemalloc and not jemalloc4:
+@depends(jemalloc, target)
+def jemalloc_os_define(jemalloc, target):
+    if jemalloc:
         if target.kernel == 'WINNT':
             return 'MOZ_MEMORY_WINDOWS'
         if target.kernel == 'Linux':
@@ -72,9 +62,9 @@ def jemalloc_os_define(jemalloc, jemalloc4, target):
 
 set_define(jemalloc_os_define, '1')
 
-@depends(jemalloc, jemalloc4, target)
-def jemalloc_os_define_android(jemalloc, jemalloc4, target):
-    if jemalloc and not jemalloc4 and target.os == 'Android':
+@depends(jemalloc, target)
+def jemalloc_os_define_android(jemalloc, target):
+    if jemalloc and target.os == 'Android':
         return 'MOZ_MEMORY_ANDROID'
 
 set_define(jemalloc_os_define_android, '1')