DrSocalkwe3n/luajit
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Redesign and harden string interning.

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Up to 40% faster on hash-intensive benchmarks.
With some ideas from Sokolov Yura.
This commit is contained in:
Mike Pall
2020-06-23 03:06:45 +02:00
parent a44f53acf5
commit ff34b48ddd
22 changed files with 394 additions and 202 deletions
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8
src/lj_state.c
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@@ -150,7 +150,7 @@ static TValue *cpluaopen(lua_State *L, lua_CFunction dummy, void *ud)
/* NOBARRIER: State initialization, all objects are white. */
setgcref(L->env, obj2gco(lj_tab_new(L, 0, LJ_MIN_GLOBAL)));
settabV(L, registry(L), lj_tab_new(L, 0, LJ_MIN_REGISTRY));
lj_str_resize(L, LJ_MIN_STRTAB-1);
lj_str_init(L);
lj_meta_init(L);
lj_lex_init(L);
fixstring(lj_err_str(L, LJ_ERR_ERRMEM)); /* Preallocate memory error msg. */
@@ -166,12 +166,12 @@ static void close_state(lua_State *L)
lj_gc_freeall(g);
lj_assertG(gcref(g->gc.root) == obj2gco(L),
"main thread is not first GC object");
lj_assertG(g->strnum == 0, "leaked %d strings", g->strnum);
lj_assertG(g->str.num == 0, "leaked %d strings", g->str.num);
lj_trace_freestate(g);
#if LJ_HASFFI
lj_ctype_freestate(g);
#endif
lj_mem_freevec(g, g->strhash, g->strmask+1, GCRef);
lj_str_freetab(g);
lj_buf_free(g, &g->tmpbuf);
lj_mem_freevec(g, tvref(L->stack), L->stacksize, TValue);
lj_assertG(g->gc.total == sizeof(GG_State),
@@ -231,7 +231,7 @@ LUA_API lua_State *lua_newstate(lua_Alloc allocf, void *allocd)
setgcref(g->mainthref, obj2gco(L));
setgcref(g->uvhead.prev, obj2gco(&g->uvhead));
setgcref(g->uvhead.next, obj2gco(&g->uvhead));
g->strmask = ~(MSize)0;
g->str.mask = ~(MSize)0;
setnilV(registry(L));
setnilV(&g->nilnode.val);
setnilV(&g->nilnode.key);