Changes to perlfaq8 "How do I find out if I'm running interactively

[p5sagit/p5-mst-13.2.git] / hv.h

diff --git a/hv.h b/hv.h
index 4f4d3aa..9e31335 100644 (file)
--- a/hv.h
+++ b/hv.h
@@ -59,6 +59,8 @@ struct xpvhv {
        IV      xivu_iv;        /* integer value or pv offset */
        UV      xivu_uv;
        void *  xivu_p1;
+       I32     xivu_i32;
+       HEK *   xivu_namehek;
     }          xiv_u;
     union {
        MAGIC*  xmg_magic;      /* linked list of magicalness */
@@ -79,6 +81,8 @@ typedef struct {
        IV      xivu_iv;        /* integer value or pv offset */
        UV      xivu_uv;
        void *  xivu_p1;
+       I32     xivu_i32;
+       HEK *   xivu_namehek;
     }          xiv_u;
     union {
        MAGIC*  xmg_magic;      /* linked list of magicalness */
@@ -279,19 +283,6 @@ C<SV*>.
 #define HvREHASH_on(hv)                (SvFLAGS(hv) |= SVphv_REHASH)
 #define HvREHASH_off(hv)       (SvFLAGS(hv) &= ~SVphv_REHASH)
 
-/* Maybe amagical: */
-/* #define HV_AMAGICmb(hv)      (SvFLAGS(hv) & (SVpgv_badAM | SVpgv_AM)) */
-
-#define HV_AMAGIC(hv)        (SvFLAGS(hv) &   SVpgv_AM)
-#define HV_AMAGIC_on(hv)     (SvFLAGS(hv) |=  SVpgv_AM)
-#define HV_AMAGIC_off(hv)    (SvFLAGS(hv) &= ~SVpgv_AM)
-
-/*
-#define HV_AMAGICbad(hv)     (SvFLAGS(hv) & SVpgv_badAM)
-#define HV_badAMAGIC_on(hv)  (SvFLAGS(hv) |= SVpgv_badAM)
-#define HV_badAMAGIC_off(hv) (SvFLAGS(hv) &= ~SVpgv_badAM)
-*/
-
 #define Nullhe Null(HE*)
 #define HeNEXT(he)             (he)->hent_next
 #define HeKEY_hek(he)          (he)->hent_hek
@@ -387,6 +378,60 @@ C<SV*>.
        ->shared_he_he.he_valu.hent_refcount),                          \
      hek)
 
+/* This refcounted he structure is used for storing the hints used for lexical
+   pragmas. Without threads, it's basically struct he + refcount.
+   With threads, life gets more complex as the structure needs to be shared
+   between threads (because it hangs from OPs, which are shared), hence the
+   alternate definition and mutex.  */
+
+#ifdef PERL_CORE
+
+/* Gosh. This really isn't a good name any longer.  */
+struct refcounted_he {
+    struct refcounted_he *refcounted_he_next;  /* next entry in chain */
+#ifdef USE_ITHREADS
+    U32                   refcounted_he_hash;
+    U32                   refcounted_he_keylen;
+#else
+    HEK                  *refcounted_he_hek;   /* hint key */
+#endif
+    U32                          refcounted_he_refcnt; /* reference count */
+    union {
+       IV                refcounted_he_u_iv;
+       UV                refcounted_he_u_uv;
+       STRLEN            refcounted_he_u_len;
+    } refcounted_he_val;
+    /* First byte is flags. Then NUL-terminated value. Then for ithreads,
+       non-NUL terminated key.  */
+    char                  refcounted_he_data[1];
+};
+
+/* Flag bits are HVhek_UTF8, HVhek_WASUTF8, then */
+#define HVrhek_undef   0x00 /* Value is undef. */
+#define HVrhek_PV      0x10 /* Value is a string. */
+#define HVrhek_IV      0x20 /* Value is IV/UV. */
+#define HVrhek_delete  0x30 /* Value is placeholder - signifies delete. */
+#define HVrhek_typemask        0x30
+#define HVrhek_UTF8    0x40 /* string value is utf8. */
+#define HVrhek_UV      0x40 /* integer value is UV. */
+
+#  ifdef USE_ITHREADS
+#    define HINTS_REFCNT_LOCK          MUTEX_LOCK(&PL_hints_mutex)
+#    define HINTS_REFCNT_UNLOCK                MUTEX_UNLOCK(&PL_hints_mutex)
+#  else
+#    define HINTS_REFCNT_LOCK          NOOP
+#    define HINTS_REFCNT_UNLOCK                NOOP
+#  endif
+#endif
+
+#ifdef USE_ITHREADS
+#  define HINTS_REFCNT_INIT            MUTEX_INIT(&PL_hints_mutex)
+#  define HINTS_REFCNT_TERM            MUTEX_DESTROY(&PL_hints_mutex)
+#else
+#  define HINTS_REFCNT_INIT            NOOP
+#  define HINTS_REFCNT_TERM            NOOP
+#endif
+
 /*
  * Local variables:
  * c-indentation-style: bsd