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Allow reading reserved slots without locking if we know its safe to do so (570404, r=brendan).

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This commit is contained in:
Andreas Gal
2010-06-07 21:35:58 -04:00
parent ecba331049
commit ae8d431ba1
4 changed files with 18 additions and 21 deletions
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10
js/src/jsapi.cpp
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@@ -1443,9 +1443,7 @@ JS_ResolveStandardClass(JSContext *cx, JSObject *obj, jsval id, JSBool *resolved
return JS_TRUE;
JSProtoKey key = JSCLASS_CACHED_PROTO_KEY(stdnm->clasp);
jsval v;
if (!js_GetReservedSlot(cx, obj, key, &v))
return JS_FALSE;
jsval v = obj->getReservedSlot(key);
if (!JSVAL_IS_PRIMITIVE(v))
return JS_TRUE;
@@ -4083,8 +4081,7 @@ js_generic_fast_native_method_dispatcher(JSContext *cx, uintN argc, jsval *vp)
JSObject *tmp;
JSFastNative native;
if (!js_GetReservedSlot(cx, JSVAL_TO_OBJECT(*vp), 0, &fsv))
return JS_FALSE;
fsv = JSVAL_TO_OBJECT(*vp)->getReservedSlot(0);
fs = (JSFunctionSpec *) JSVAL_TO_PRIVATE(fsv);
JS_ASSERT((~fs->flags & (JSFUN_FAST_NATIVE | JSFUN_GENERIC_NATIVE)) == 0);
@@ -4139,8 +4136,7 @@ js_generic_native_method_dispatcher(JSContext *cx, JSObject *obj,
JSFunctionSpec *fs;
JSObject *tmp;
if (!js_GetReservedSlot(cx, JSVAL_TO_OBJECT(argv[-2]), 0, &fsv))
return JS_FALSE;
fsv = JSVAL_TO_OBJECT(argv[-2])->getReservedSlot(0);
fs = (JSFunctionSpec *) JSVAL_TO_PRIVATE(fsv);
JS_ASSERT((fs->flags & (JSFUN_FAST_NATIVE | JSFUN_GENERIC_NATIVE)) ==
JSFUN_GENERIC_NATIVE);