First steps towards an explicit perl.exp-less AIX build

[perl5.git] / av.h

diff --git a/av.h b/av.h
index f537d9e..d177122 100644 (file)
--- a/av.h
+++ b/av.h
@@ -1,6 +1,7 @@
 /*    av.h
  *
- *    Copyright (c) 1991-1999, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, 2002, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -10,13 +11,13 @@
 struct xpvav {
     char*      xav_array;      /* pointer to first array element */
     SSize_t    xav_fill;       /* Index of last element present */
-    SSize_t    xav_max;        /* Number of elements for which array has space */
+    SSize_t    xav_max;        /* max index for which array has space */
     IV         xof_off;        /* ptr is incremented by offset */
     NV         xnv_nv;         /* numeric value, if any */
     MAGIC*     xmg_magic;      /* magic for scalar array */
     HV*                xmg_stash;      /* class package */
 
-    SV**       xav_alloc;      /* pointer to malloced string */
+    SV**       xav_alloc;      /* pointer to beginning of C array of SVs */
     SV*                xav_arylen;
     U8         xav_flags;
 };
@@ -32,8 +33,8 @@ struct xpvav {
  * real if the array needs to be modified in some way.  Functions that
  * modify fake AVs check both flags to call av_reify() as appropriate.
  *
- * Note that the Perl stack has neither flag set. (Thus, items that go
- * on the stack are never refcounted.)
+ * Note that the Perl stack and @DB::args have neither flag set. (Thus,
+ * items that go on the stack are never refcounted.)
  *
  * These internal details are subject to change any time.  AV
  * manipulations external to perl should not care about any of this.
@@ -45,6 +46,20 @@ struct xpvav {
 /* XXX this is not used anywhere */
 #define AVf_REUSED 4   /* got undeffed--don't turn old memory into SVs now */
 
+/*
+=head1 Handy Values
+
+=for apidoc AmU||Nullav
+Null AV pointer.
+
+=head1 Array Manipulation Functions
+
+=for apidoc Am|int|AvFILL|AV* av
+Same as C<av_len()>.  Deprecated, use C<av_len()> instead.
+
+=cut
+*/
+
 #define Nullav Null(AV*)
 
 #define AvARRAY(av)    ((SV**)((XPVAV*)  SvANY(av))->xav_array)
@@ -69,3 +84,4 @@ struct xpvav {
 #define AvFILL(av)     ((SvRMAGICAL((SV *) (av))) \
                          ? mg_size((SV *) av) : AvFILLp(av))
 
+#define NEGATIVE_INDICES_VAR "NEGATIVE_INDICES"