X-Git-Url: http://git.madism.org/?a=blobdiff_plain;f=common%2Fmem.h;h=9d98b871745b9f0449460dcb1aeb4dc5887a71ad;hb=7fa8c1bc673add68529fa2bda8134be5089e8745;hp=44630efc2ca6c187373e052e1754b355424e5cc7;hpb=8977d252fc44ae953df4bde4a2f1c5895beea4e0;p=apps%2Fpfixtools.git

diff --git a/common/mem.h b/common/mem.h
index 44630ef..9d98b87 100644
--- a/common/mem.h
+++ b/common/mem.h
@@ -53,6 +53,14 @@
 #define p_dupstr(p, len)        xmemdupstr((p), (len))
 #define p_realloc(pp, count)    xrealloc((void*)(pp), sizeof(**(pp)) * (count))
 
+#  define p_shrink(pp, goalnb, allocnb)           \
+    do {                                          \
+        if (*(allocnb) > (goalnb)) {              \
+            p_realloc(pp, (goalnb));              \
+            *(allocnb) = (goalnb);                \
+        }                                         \
+    } while(0)
+
 #  define p_alloc_nr(x) (((x) + 16) * 3 / 2)
 #  define p_allocgrow(pp, goalnb, allocnb)                  \
     do {                                                    \