static JSBool
IndexToValue(JSContext *cx, jsuint length, jsval *vp)
{
if (length <= JSVAL_INT_MAX) {
*vp = INT_TO_JSVAL(length);
return JS_TRUE;
}
return js_NewDoubleValue(cx, (jsdouble)length, vp);
}
JSAtom *
js_AtomizeDouble(JSContext *cx, jsdouble d, uintN flags)
{
jsdouble *dp;
JSHashNumber keyHash;
jsval key;
JSAtomState *state;
JSHashTable *table;
JSHashEntry *he, **hep;
JSAtom *atom;
char buf[2 * ALIGNMENT(double)];
dp = ALIGN(buf, double);
*dp = d;
keyHash = HASH_DOUBLE(dp);
key = DOUBLE_TO_JSVAL(dp);
state = &cx->runtime->atomState;
JS_LOCK(&state->lock, cx);
table = state->table;
hep = JS_HashTableRawLookup(table, keyHash, (void *)key);
if ((he = *hep) == NULL) {
#ifdef JS_THREADSAFE
uint32 gen = state->tablegen;
#endif
JS_UNLOCK(&state->lock,cx);
if (!js_NewDoubleValue(cx, d, &key))
return NULL;
JS_LOCK(&state->lock, cx);
#ifdef JS_THREADSAFE
if (state->tablegen != gen) {
hep = JS_HashTableRawLookup(table, keyHash, (void *)key);
if ((he = *hep) != NULL) {
atom = (JSAtom *)he;
goto out;
}
}
#endif
he = JS_HashTableRawAdd(table, hep, keyHash, (void *)key, NULL);
if (!he) {
JS_ReportOutOfMemory(cx);
atom = NULL;
goto out;
}
}
atom = (JSAtom *)he;
atom->flags |= flags;
cx->lastAtom = atom;
out:
JS_UNLOCK(&state->lock,cx);
return atom;
}
JSAtom *
js_AtomizeDouble(JSContext *cx, jsdouble d, uintN flags)
{
jsdouble *dp;
PRHashTable *table;
PRHashNumber keyHash;
jsval key;
PRHashEntry *he, **hep;
JSAtom *atom;
#if PR_ALIGN_OF_DOUBLE == 8
dp = &d;
#else
char alignbuf[16];
dp = (jsdouble *)&alignbuf[8 - ((pruword)&alignbuf & 7)];
*dp = d;
#endif
PR_ASSERT(JS_IS_LOCKED(cx));
table = cx->runtime->atomState.table;
keyHash = HASH_DOUBLE(dp);
key = DOUBLE_TO_JSVAL(dp);
hep = PR_HashTableRawLookup(table, keyHash, (void *)key);
if ((he = *hep) == NULL) {
if (!js_NewDoubleValue(cx, d, &key))
return NULL;
he = PR_HashTableRawAdd(table, hep, keyHash, (void *)key, NULL);
if (!he) {
JS_ReportOutOfMemory(cx);
return NULL;
}
}
atom = (JSAtom *)he;
#ifdef DEBUG_DUPLICATE_ATOMS
hep = PR_HashTableRawLookup(table, keyHash, (void *)key);
he = *hep;
PR_ASSERT(atom == (JSAtom *)he);
#endif
if (flags & ATOM_NOHOLD)
return atom;
return js_HoldAtom(cx, atom);
}