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String buffers, part 2e: add serialization string dictionary.

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Sponsored by fmad.io.
This commit is contained in:
Mike Pall
2021-06-07 12:03:22 +02:00
parent 4216bdfb2a
commit ac02a120ef
10 changed files with 214 additions and 65 deletions
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23
src/lj_tab.c
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@@ -16,25 +16,6 @@
/* -- Object hashing ------------------------------------------------------ */
/* Hash values are masked with the table hash mask and used as an index. */
static LJ_AINLINE Node *hashmask(const GCtab *t, uint32_t hash)
{
Node *n = noderef(t->node);
return &n[hash & t->hmask];
}
/* String IDs are generated when a string is interned. */
#define hashstr(t, s) hashmask(t, (s)->sid)
#define hashlohi(t, lo, hi) hashmask((t), hashrot((lo), (hi)))
#define hashnum(t, o) hashlohi((t), (o)->u32.lo, ((o)->u32.hi << 1))
#if LJ_GC64
#define hashgcref(t, r) \
hashlohi((t), (uint32_t)gcrefu(r), (uint32_t)(gcrefu(r) >> 32))
#else
#define hashgcref(t, r) hashlohi((t), gcrefu(r), gcrefu(r) + HASH_BIAS)
#endif
/* Hash an arbitrary key and return its anchor position in the hash table. */
static Node *hashkey(const GCtab *t, cTValue *key)
{
@@ -413,7 +394,7 @@ cTValue * LJ_FASTCALL lj_tab_getinth(GCtab *t, int32_t key)
return NULL;
}
cTValue *lj_tab_getstr(GCtab *t, GCstr *key)
cTValue *lj_tab_getstr(GCtab *t, const GCstr *key)
{
Node *n = hashstr(t, key);
do {
@@ -546,7 +527,7 @@ TValue *lj_tab_setinth(lua_State *L, GCtab *t, int32_t key)
return lj_tab_newkey(L, t, &k);
}
TValue *lj_tab_setstr(lua_State *L, GCtab *t, GCstr *key)
TValue *lj_tab_setstr(lua_State *L, GCtab *t, const GCstr *key)
{
TValue k;
Node *n = hashstr(t, key);