JS::Remove*Root 编辑

Obsolete since JSAPI 38
This feature is obsolete.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.

This article covers features introduced in SpiderMonkey 31

Unregister 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

void
RemoveValueRoot(JSContext *cx, JS::Heap<JS::Value> *vp);

void
RemoveStringRoot(JSContext *cx, JS::Heap<JSString *> *rp);

void
RemoveObjectRoot(JSContext *cx, JS::Heap<JSObject *> *rp);

void
RemoveScriptRoot(JSContext *cx, JS::Heap<JSScript *> *rp);

void
RemoveValueRootRT(JSRuntime *rt, JS::Heap<JS::Value> *vp);

void
RemoveStringRootRT(JSRuntime *rt, JS::Heap<JSString *> *rp);

void
RemoveObjectRootRT(JSRuntime *rt, JS::Heap<JSObject *> *rp);

void
RemoveScriptRootRT(JSRuntime *rt, JS::Heap<JSScript *> *rp);

Description

JS::Remove*Root removes the variable that rp points to from the garbage collector's root set.

The entry for vp/rp is removed from the root set for the JSRuntime associated with the context cx.

See Also

• MXR ID Search for JS::RemoveValueRoot
• MXR ID Search for JS::RemoveStringRoot
• MXR ID Search for JS::RemoveObjectRoot
• MXR ID Search for JS::RemoveScriptRoot
• MXR ID Search for JS::RemoveValueRootRT
• MXR ID Search for JS::RemoveStringRootRT
• MXR ID Search for JS::RemoveObjectRootRT
• MXR ID Search for JS::RemoveScriptRootRT
• bug 912581
• bug 1107639