t/perf/optree.t: add use warnings, strict

[perl5.git] / hv.h

diff --git a/hv.h b/hv.h
index 0e773f2..3a46ea3 100644 (file)
--- a/hv.h
+++ b/hv.h
@@ -43,12 +43,17 @@ struct he {
 
 /* hash key -- defined separately for use as shared pointer */
 struct hek {
-    U32                hek_hash;       /* hash of key */
-    I32                hek_len;        /* length of hash key */
-    char       hek_key[1];     /* variable-length hash key */
+    U32         hek_hash;        /* computed hash of key */
+    I32         hek_len;        /* length of the hash key */
+    /* Be careful! Sometimes we store a pointer in the hek_key
+     * buffer, which means it must be 8 byte aligned or things
+     * dont work on aligned platforms like HPUX
+     * Also beware, the last byte of the hek_key buffer is a
+     * hidden flags byte about the key. */
+     char       hek_key[1];        /* variable-length hash key */
     /* the hash-key is \0-terminated */
     /* after the \0 there is a byte for flags, such as whether the key
-       is UTF-8 */
+       is UTF-8 or WAS-UTF-8, or an SV */
 };
 
 struct shared_he {
@@ -475,6 +480,8 @@ C<SV*>.
                              (HV_FETCH_ISSTORE|HV_FETCH_JUST_SV),      \
                              (val), (hash)))
 
+
+
 #define hv_exists(hv, key, klen)                                       \
     (hv_common_key_len((hv), (key), (klen), HV_FETCH_ISEXISTS, NULL, 0) \
      ? TRUE : FALSE)
@@ -488,6 +495,24 @@ C<SV*>.
     (MUTABLE_SV(hv_common_key_len((hv), (key), (klen),                 \
                                  (flags) | HV_DELETE, NULL, 0)))
 
+/* Provide 's' suffix subs for constant strings (and avoid needing to count
+ * chars). See STR_WITH_LEN in handy.h - because these are macros we cant use
+ * STR_WITH_LEN to do the work, we have to unroll it. */
+#define hv_existss(hv, key) \
+    hv_exists((hv), ("" key ""), (sizeof(key)-1))
+
+#define hv_fetchs(hv, key, lval) \
+    hv_fetch((hv), ("" key ""), (sizeof(key)-1), (lval))
+
+#define hv_deletes(hv, key, flags) \
+    hv_delete((hv), ("" key ""), (sizeof(key)-1), (flags))
+
+#define hv_name_sets(hv, name, flags) \
+    hv_name_set((hv),("" name ""),(sizeof(name)-1), flags)
+
+#define hv_stores(hv, key, val) \
+    hv_store((hv), ("" key ""), (sizeof(key)-1), (val), 0)
+
 #ifdef PERL_CORE
 # define hv_storehek(hv, hek, val) \
     hv_common((hv), NULL, HEK_KEY(hek), HEK_LEN(hek), HEK_UTF8(hek),   \