(posix_memalign): New function.

2 files changed, 38 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index adef925992c..20469ca12e3 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2007-08-09  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
+
+        * gmalloc.c (posix_memalign): New function.
+
 2007-08-08  Glenn Morris  <rgm@gnu.org>
 
         * Replace `iff' in doc-strings and comments.
@@ -31,8 +35,8 @@
         Call malloc_enable_thread on interactive startup.
 
         * gmalloc.c (_malloc_thread_enabled_p) [USE_PTHREAD]: New variable.
-        [USE_PTHREAD] (LOCK, UNLOCK, LOCK_ALIGNED_BLOCKS)
-        (UNLOCK_ALIGNED_BLOCKS): Conditionalize with it.
+        (LOCK, UNLOCK, LOCK_ALIGNED_BLOCKS, UNLOCK_ALIGNED_BLOCKS)
+        [USE_PTHREAD]: Conditionalize with it.
         (malloc_atfork_handler_prepare, malloc_atfork_handler_parent)
         (malloc_atfork_handler_child, malloc_enable_thread) [USE_PTHREAD]:
         New functions.
diff --git a/src/gmalloc.c b/src/gmalloc.c
index ea6ccc4bf1f..ccc08e1ff68 100644
--- a/src/gmalloc.c
+++ b/src/gmalloc.c
@@ -129,6 +129,8 @@ extern FREE_RETURN_TYPE free PP ((__ptr_t __ptr));
 #if ! (defined (_MALLOC_INTERNAL) && __DJGPP__ - 0 == 1) /* Avoid conflict.  */
 extern __ptr_t memalign PP ((__malloc_size_t __alignment,
                              __malloc_size_t __size));
+extern int posix_memalign PP ((__ptr_t *, __malloc_size_t,
+                               __malloc_size_t size));
 #endif
 
 /* Allocate SIZE bytes on a page boundary.  */
@@ -1857,6 +1859,36 @@ memalign (alignment, size)
   return result;
 }
 
+#ifndef ENOMEM
+#define ENOMEM 12
+#endif
+
+#ifndef EINVAL
+#define EINVAL 22
+#endif
+
+int
+posix_memalign (memptr, alignment, size)
+     __ptr_t *memptr;
+     __malloc_size_t alignment;
+     __malloc_size_t size;
+{
+  __ptr_t mem;
+
+  if (alignment == 0
+      || alignment % sizeof (__ptr_t) != 0
+      || (alignment & (alignment - 1)) != 0)
+    return EINVAL;
+
+  mem = memalign (alignment, size);
+  if (mem == NULL)
+    return ENOMEM;
+
+  *memptr = mem;
+
+  return 0;
+}
+
 #endif /* Not DJGPP v1 */
 /* Allocate memory on a page boundary.
    Copyright (C) 1991, 92, 93, 94, 96 Free Software Foundation, Inc.