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Bug 776159 - Thread more Handles through jsarray; r=sfink

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--HG--
extra : rebase_source : 31c8efb209a6f5a58709429cce4cc0675b537847
This commit is contained in:
Terrence Cole 2012-07-20 16:22:00 -07:00
parent d8fe67a4c7
commit 1378239108
6 changed files with 34 additions and 44 deletions
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2
js/public/Utility.h
View File

@ -982,7 +982,7 @@ namespace JS {
* a live integer value.
*/
inline void PoisonPtr(uintptr_t *v)
inline void PoisonPtr(void *v)
{
#if defined(JSGC_ROOT_ANALYSIS) && defined(DEBUG)
uint8_t *ptr = (uint8_t *) v + 3;

6
js/src/gc/Root.h
View File

@ -395,6 +395,12 @@ class SkipRoot
JS_DECL_USE_GUARD_OBJECT_NOTIFIER
};
/*
* This typedef is to annotate parameters that we have manually verified do not
* need rooting, as opposed to parameters that have not yet been considered.
*/
typedef JSObject *RawObject;
#ifdef DEBUG
JS_FRIEND_API(bool) IsRootingUnnecessaryForContext(JSContext *cx);
JS_FRIEND_API(void) SetRootingUnnecessaryForContext(JSContext *cx, bool value);

5
js/src/jsapi.cpp
View File

@ -4580,11 +4580,12 @@ JS_GetArrayLength(JSContext *cx, JSObject *obj, uint32_t *lengthp)
}
JS_PUBLIC_API(JSBool)
JS_SetArrayLength(JSContext *cx, JSObject *obj, uint32_t length)
JS_SetArrayLength(JSContext *cx, JSObject *objArg, uint32_t length)
{
AssertHeapIsIdle(cx);
CHECK_REQUEST(cx);
assertSameCompartment(cx, obj);
assertSameCompartment(cx, objArg);
RootedObject obj(cx, objArg);
return js_SetLengthProperty(cx, obj, length);
}

37
js/src/jsarray.cpp
View File

@ -141,7 +141,6 @@ js_GetLengthProperty(JSContext *cx, JSObject *obj, uint32_t *lengthp)
return true;
}
return ToUint32(cx, value, (uint32_t *)lengthp);
}
@ -486,12 +485,11 @@ SetOrDeleteArrayElement(JSContext *cx, HandleObject obj, double index,
}
JSBool
js_SetLengthProperty(JSContext *cx, JSObject *objArg, double length)
js_SetLengthProperty(JSContext *cx, HandleObject obj, double length)
{
Value v = NumberValue(length);
/* We don't support read-only array length yet. */
Rooted<JSObject*> obj(cx, objArg);
return obj->setProperty(cx, obj, cx->runtime->atomState.lengthAtom, &v, false);
}
@ -688,7 +686,7 @@ array_lookupSpecial(JSContext *cx, HandleObject obj, HandleSpecialId sid,
}
JSBool
js_GetDenseArrayElementValue(JSContext *cx, JSObject *obj, jsid id, Value *vp)
js_GetDenseArrayElementValue(JSContext *cx, HandleObject obj, jsid id, Value *vp)
{
JS_ASSERT(obj->isDenseArray());
@ -2396,7 +2394,7 @@ array_pop_dense(JSContext *cx, HandleObject obj, CallArgs &args)
return false;
args.rval() = elt;
// obj may not be a dense array any more, e.g. if the element was a missing
// and a getter supplied by the prototype modified the object.
if (obj->isDenseArray()) {
@ -2406,7 +2404,7 @@ array_pop_dense(JSContext *cx, HandleObject obj, CallArgs &args)
obj->setArrayLength(cx, index);
return true;
}
return js_SetLengthProperty(cx, obj, index);
}
@ -3661,7 +3659,7 @@ EnsureNewArrayElements(JSContext *cx, JSObject *obj, uint32_t length)
template<bool allocateCapacity>
static JS_ALWAYS_INLINE JSObject *
NewArray(JSContext *cx, uint32_t length, JSObject *proto_)
NewArray(JSContext *cx, uint32_t length, RawObject protoArg)
{
gc::AllocKind kind = GuessArrayGCKind(length);
JS_ASSERT(CanBeFinalizedInBackground(kind, &ArrayClass));
@ -3685,7 +3683,8 @@ NewArray(JSContext *cx, uint32_t length, JSObject *proto_)
}
Rooted<GlobalObject*> parent(cx, parent_);
RootedObject proto(cx, proto_);
RootedObject proto(cx, protoArg);
PoisonPtr(reinterpret_cast<uintptr_t *>(protoArg));
if (!proto && !FindProto(cx, &ArrayClass, parent, &proto))
return NULL;
@ -3718,25 +3717,19 @@ NewArray(JSContext *cx, uint32_t length, JSObject *proto_)
}
JSObject * JS_FASTCALL
NewDenseEmptyArray(JSContext *cx, JSObject *proto)
NewDenseEmptyArray(JSContext *cx, RawObject proto /* = NULL */)
{
return NewArray<false>(cx, 0, proto);
}
JSObject * JS_FASTCALL
NewDenseAllocatedArray(JSContext *cx, uint32_t length, JSObject *proto)
NewDenseAllocatedArray(JSContext *cx, uint32_t length, RawObject proto /* = NULL */)
{
return NewArray<true>(cx, length, proto);
}
JSObject * JS_FASTCALL
NewDenseAllocatedEmptyArray(JSContext *cx, uint32_t length, JSObject *proto)
{
return NewArray<true>(cx, length, proto);
}
JSObject * JS_FASTCALL
NewDenseUnallocatedArray(JSContext *cx, uint32_t length, JSObject *proto)
NewDenseUnallocatedArray(JSContext *cx, uint32_t length, RawObject proto /* = NULL */)
{
return NewArray<false>(cx, length, proto);
}
@ -3745,8 +3738,7 @@ NewDenseUnallocatedArray(JSContext *cx, uint32_t length, JSObject *proto)
JSObject * JS_FASTCALL
mjit::stubs::NewDenseUnallocatedArray(VMFrame &f, uint32_t length)
{
JSObject *proto = (JSObject *) f.scratch;
JSObject *obj = NewArray<false>(f.cx, length, proto);
JSObject *obj = NewArray<false>(f.cx, length, (RawObject)f.scratch);
if (!obj)
THROWV(NULL);
@ -3755,7 +3747,7 @@ mjit::stubs::NewDenseUnallocatedArray(VMFrame &f, uint32_t length)
#endif
JSObject *
NewDenseCopiedArray(JSContext *cx, uint32_t length, const Value *vp, JSObject *proto /* = NULL */)
NewDenseCopiedArray(JSContext *cx, uint32_t length, const Value *vp, RawObject proto /* = NULL */)
{
// XXX vp may be an internal pointer to an object's dense array elements.
SkipRoot skip(cx, &vp);
@ -3785,12 +3777,11 @@ NewSlowEmptyArray(JSContext *cx)
return obj;
}
}
} // namespace js
#ifdef DEBUG
JSBool
js_ArrayInfo(JSContext *cx, unsigned argc, jsval *vp)
js_ArrayInfo(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
JSObject *array;

22
js/src/jsarray.h
View File

@ -50,30 +50,22 @@ namespace js {
/* Create a dense array with no capacity allocated, length set to 0. */
extern JSObject * JS_FASTCALL
NewDenseEmptyArray(JSContext *cx, JSObject *proto=NULL);
NewDenseEmptyArray(JSContext *cx, RawObject proto = NULL);
/* Create a dense array with length and capacity == 'length', initialized length set to 0. */
extern JSObject * JS_FASTCALL
NewDenseAllocatedArray(JSContext *cx, uint32_t length, JSObject *proto=NULL);
/*
* Create a dense array with length, capacity and initialized length == 'length', and filled with holes.
* This is a kludge, as the tracer doesn't yet track/update initialized length when initializing
* array elements.
*/
extern JSObject * JS_FASTCALL
NewDenseAllocatedEmptyArray(JSContext *cx, uint32_t length, JSObject *proto=NULL);
NewDenseAllocatedArray(JSContext *cx, uint32_t length, RawObject proto = NULL);
/*
* Create a dense array with a set length, but without allocating space for the
* contents. This is useful, e.g., when accepting length from the user.
*/
extern JSObject * JS_FASTCALL
NewDenseUnallocatedArray(JSContext *cx, uint32_t length, JSObject *proto=NULL);
NewDenseUnallocatedArray(JSContext *cx, uint32_t length, RawObject proto = NULL);
/* Create a dense array with a copy of vp. */
extern JSObject *
NewDenseCopiedArray(JSContext *cx, uint32_t length, const Value *vp, JSObject *proto = NULL);
NewDenseCopiedArray(JSContext *cx, uint32_t length, const Value *vp, RawObject proto = NULL);
/* Create a sparse array. */
extern JSObject *
@ -85,7 +77,7 @@ extern JSBool
js_GetLengthProperty(JSContext *cx, JSObject *obj, uint32_t *lengthp);
extern JSBool
js_SetLengthProperty(JSContext *cx, JSObject *obj, double length);
js_SetLengthProperty(JSContext *cx, js::HandleObject obj, double length);
namespace js {
@ -126,7 +118,7 @@ array_shift(JSContext *cx, unsigned argc, js::Value *vp);
#ifdef DEBUG
extern JSBool
js_ArrayInfo(JSContext *cx, unsigned argc, jsval *vp);
js_ArrayInfo(JSContext *cx, unsigned argc, js::Value *vp);
#endif
/*
@ -146,7 +138,7 @@ js_PrototypeHasIndexedProperties(JSContext *cx, JSObject *obj);
* Utility to access the value from the id returned by array_lookupProperty.
*/
JSBool
js_GetDenseArrayElementValue(JSContext *cx, JSObject *obj, jsid id,
js_GetDenseArrayElementValue(JSContext *cx, js::HandleObject obj, jsid id,
js::Value *vp);
/* Array constructor native. Exposed only so the JIT can know its address. */

6
js/src/vm/Debugger.cpp
View File

@ -1757,7 +1757,7 @@ JSBool
Debugger::getDebuggees(JSContext *cx, unsigned argc, Value *vp)
{
THIS_DEBUGGER(cx, argc, vp, "getDebuggees", args, dbg);
RootedObject arrobj(cx, NewDenseAllocatedArray(cx, dbg->debuggees.count(), NULL));
RootedObject arrobj(cx, NewDenseAllocatedArray(cx, dbg->debuggees.count()));
if (!arrobj)
return false;
arrobj->ensureDenseArrayInitializedLength(cx, 0, dbg->debuggees.count());
@ -2330,7 +2330,7 @@ Debugger::findScripts(JSContext *cx, unsigned argc, Value *vp)
if (!query.findScripts(&scripts))
return false;
RootedObject result(cx, NewDenseAllocatedArray(cx, scripts.length(), NULL));
RootedObject result(cx, NewDenseAllocatedArray(cx, scripts.length()));
if (!result)
return false;
@ -3688,7 +3688,7 @@ DebuggerObject_getParameterNames(JSContext *cx, unsigned argc, Value *vp)
}
RootedFunction fun(cx, obj->toFunction());
JSObject *result = NewDenseAllocatedArray(cx, fun->nargs, NULL);
JSObject *result = NewDenseAllocatedArray(cx, fun->nargs);
if (!result)
return false;
result->ensureDenseArrayInitializedLength(cx, 0, fun->nargs);