(USE_POSIX_MEMALIGN): New macro.

(ABLOCKS_BASE, lisp_align_malloc, lisp_align_free): Use it.

2 files changed, 20 insertions, 12 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 6cf09be70fd..0a9d21b0c9b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2006-03-09  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+        * alloc.c (USE_POSIX_MEMALIGN): New macro.
+        (ABLOCKS_BASE, lisp_align_malloc, lisp_align_free): Use it.
+
 2006-03-09  Kenichi Handa  <handa@m17n.org>
 
         * coding.c (DECODE_EMACS_MULE_COMPOSITION_CHAR): Fix decoding
@@ -28,10 +33,10 @@
         (MAC_AQUA_SMALL_VERTICAL_SCROLL_BAR_WIDTH): New defines.
 
         * macfns.c (x_default_scroll_bar_color_parameter)
-        (x_set_scroll_bar_foreground, x_set_scroll_bar_background): Remove
-        unnecessary prototypes.
-        (x_set_scroll_bar_default_width): Use
-        MAC_AQUA_VERTICAL_SCROLL_BAR_WIDTH.
+        (x_set_scroll_bar_foreground, x_set_scroll_bar_background):
+        Remove unnecessary prototypes.
+        (x_set_scroll_bar_default_width):
+        Use MAC_AQUA_VERTICAL_SCROLL_BAR_WIDTH.
         (mac_set_scroll_bar_width): New function.
         (mac_frame_parm_handlers): Set it as handler for scroll-bar-width.
 
@@ -57,9 +62,9 @@
         lines, by distributing the rows evenly over the tool-bar screen area.
         (Vtool_bar_border): New variable.
         (syms_of_xdisp): DEFVAR_LISP it.
-        (display_tool_bar_line): Add HEIGHT arg for desired row height.  Make
-        tool-bar row the desired height.  Use default face for border below
-        tool-bar.
+        (display_tool_bar_line): Add HEIGHT arg for desired row height.
+        Make tool-bar row the desired height.  Use default face for border
+        below tool-bar.
         (tool_bar_lines_needed): Add N_ROWS arg.  Use it to return number of
         actual tool-bar rows.
         (redisplay_tool_bar): Calculate f->n_tool_bar_rows initially.
@@ -86,8 +91,7 @@
 
 2006-02-26  Chong Yidong  <cyd@stupidchicken.com>
 
-        * xterm.h, xterm.c (x_uncatch_errors): Delete unneccessary
-        argument.
+        * xterm.h, xterm.c (x_uncatch_errors): Delete unneccessary argument.
 
         * xterm.c: (x_load_font, x_term_init, XTmouse_position)
         (handle_one_xevent, x_connection_closed, x_list_fonts): No arg for
diff --git a/src/alloc.c b/src/alloc.c
index bb5f550d175..ee84bd2fb29 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -883,6 +883,10 @@ lisp_free (block)
 /* The entry point is lisp_align_malloc which returns blocks of at most    */
 /* BLOCK_BYTES and guarantees they are aligned on a BLOCK_ALIGN boundary.  */
 
+/* Use posix_memalloc if the system has it and we're using the system's
+   malloc (because our gmalloc.c routines don't have posix_memalign although
+   its memalloc could be used).  */
+#define USE_POSIX_MEMALIGN (HAVE_POSIX_MEMALIGN && SYSTEM_MALLOC)
 
 /* BLOCK_ALIGN has to be a power of 2.  */
 #define BLOCK_ALIGN (1 << 10)
@@ -948,7 +952,7 @@ struct ablocks
 #define ABLOCKS_BUSY(abase) ((abase)->blocks[0].abase)
 
 /* Pointer to the (not necessarily aligned) malloc block.  */
-#ifdef HAVE_POSIX_MEMALIGN
+#ifdef USE_POSIX_MEMALIGN
 #define ABLOCKS_BASE(abase) (abase)
 #else
 #define ABLOCKS_BASE(abase) \
@@ -989,7 +993,7 @@ lisp_align_malloc (nbytes, type)
       mallopt (M_MMAP_MAX, 0);
 #endif
 
-#ifdef HAVE_POSIX_MEMALIGN
+#ifdef USE_POSIX_MEMALIGN
       {
         int err = posix_memalign (&base, BLOCK_ALIGN, ABLOCKS_BYTES);
         if (err)
@@ -1105,7 +1109,7 @@ lisp_align_free (block)
         }
       eassert ((aligned & 1) == aligned);
       eassert (i == (aligned ? ABLOCKS_SIZE : ABLOCKS_SIZE - 1));
-#ifdef HAVE_POSIX_MEMALIGN
+#ifdef USE_POSIX_MEMALIGN
       eassert ((unsigned long)ABLOCKS_BASE (abase) % BLOCK_ALIGN == 0);
 #endif
       free (ABLOCKS_BASE (abase));