X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=av.h;h=a8dc60b4cde8046dbd07e5015db669c31b93038d;hb=a9581ec21a2686ca09657757555fcd66435bb205;hp=082a8abd3659c44192ad7ebe886edc57a3c1167b;hpb=a0d0e21ea6ea90a22318550944fe6cb09ae10cda;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/av.h b/av.h
index 082a8ab..a8dc60b 100644
--- a/av.h
+++ b/av.h
@@ -1,6 +1,6 @@
 /*    av.h
  *
- *    Copyright (c) 1991-1994, Larry Wall
+ *    Copyright (c) 1991-1997, Larry Wall
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -8,7 +8,7 @@
  */
 
 struct xpvav {
-    char*	xav_array;	/* pointer to malloced string */
+    char*	xav_array;      /* pointer to first array element */
     SSize_t	xav_fill;
     SSize_t	xav_max;
     IV		xof_off;	/* ptr is incremented by offset */
@@ -16,13 +16,14 @@ struct xpvav {
     MAGIC*	xmg_magic;	/* magic for scalar array */
     HV*		xmg_stash;	/* class package */
 
-    SV**	xav_alloc;
+    SV**	xav_alloc;	/* pointer to malloced string */
     SV*		xav_arylen;
     U8		xav_flags;
 };
 
 #define AVf_REAL 1	/* free old entries */
 #define AVf_REIFY 2	/* can become real */
+#define AVf_REUSED 4	/* got undeffed--don't turn old memory into SVs now */
 
 #define Nullav Null(AV*)
 
@@ -39,6 +40,9 @@ struct xpvav {
 #define AvREIFY(av)	(AvFLAGS(av) & AVf_REIFY)
 #define AvREIFY_on(av)	(AvFLAGS(av) |= AVf_REIFY)
 #define AvREIFY_off(av)	(AvFLAGS(av) &= ~AVf_REIFY)
+#define AvREUSED(av)	(AvFLAGS(av) & AVf_REUSED)
+#define AvREUSED_on(av)	(AvFLAGS(av) |= AVf_REUSED)
+#define AvREUSED_off(av) (AvFLAGS(av) &= ~AVf_REUSED)
 
-#define AvREALISH(av)	AvFLAGS(av)	/* REAL or REIFY -- shortcut */
+#define AvREALISH(av)	(AvFLAGS(av) & (AVf_REAL|AVf_REIFY))