JS_Remove*Root 编辑
Obsolete since JSAPI 31
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Unregisters a pointer to a GC thing so that it is no longer a member of the garbage collector's root set. This enables any pointed-at GC thing to be garbage collected as needed.
Syntax
JSBool
JS_RemoveValueRoot(JSContext *cx, jsval *vp);
JSBool
JS_RemoveStringRoot(JSContext *cx, JSString **spp);
JSBool
JS_RemoveObjectRoot(JSContext *cx, JSObject **opp);
JSBool
JS_RemoveGCThingRoot(JSContext *cx, void **rp);
| Name | Type | Description |
|---|---|---|
cx | JSContext * | A context. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext. |
vp | jsval * | Address of the jsval variable to remove from the root set. This must have been passed to either JS_AddValueRoot or JS_AddNamedValueRoot. |
spp | JSString * | Address of the JSString* variable to remove from the root set. This must have been passed to either JS_AddStringRoot or JS_AddNamedStringRoot. |
opp | JSObject * | Address of the JSObject* variable to remove from the root set. This must have been passed to either JS_AddObjectRoot or JS_AddNamedObjectRoot. |
rp | void ** | Address of the pointer variable to remove from the root set. This must have been passed to either JS_AddGCThingRoot or JS_AddNamedGCThingRoot. |
Description
JS_RemoveRoot removes the variable that rp points to from the garbage collector's root set.
The entry for rp is removed from the root set for the JSRuntime associated with the context cx.
JS_RemoveRoot always returns JS_TRUE.
See Also
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