JS_GetContextPrivate 编辑

Access a JSContext field for application-specific data.

Syntax

void *
JS_GetContextPrivate(JSContext *cx);

void
JS_SetContextPrivate(JSContext *cx, void *data);

void *
JS_GetSecondContextPrivate(JSContext *cx); // Added in SpiderMonkey 17

void
JS_SetSecondContextPrivate(JSContext *cx, void *data); // Added in SpiderMonkey 17

Description

Each JSContext has two fields of type void * which the application may use for any purpose. They are especially useful for storing data needed by callbacks. JS_GetContextPrivate and JS_GetSecondContextPrivate get this field and JS_SetContextPrivate and JS_SetSecondContextPrivate set it. The field is initially NULL.

Memory management for this private data is the application's responsibility. The JavaScript engine itself never uses it.

See Also

• MXR ID Search for JS_GetContextPrivate
• MXR ID Search for JS_SetContextPrivate
• MXR ID Search for JS_GetSecondContextPrivate
• MXR ID Search for JS_SetSecondContextPrivate
• JS_GetRuntimePrivate
• JS_SetRuntimePrivate
• JS_GetCompartmentPrivate
• JS_SetCompartmentPrivate
• JS_GetPrivate
• JS_SetPrivate
• JS_GetInstancePrivate
• bug 714458