gecko-dev/js/xpconnect/idl/nsIJSRuntimeService.idl

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 * The Original Code is Mozilla Communicator client code, released
 * March 31, 1998.
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 * The Initial Developer of the Original Code is
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 *   John Bandhauer <jband@netscape.com>
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#include "nsISupports.idl"

[ptr] native JSRuntime(JSRuntime);
native JSGCCallback(JSGCCallback);

interface nsIXPCScriptable;

[uuid(364bcec3-7034-4a4e-bff5-b3f796ca9771)]
interface nsIJSRuntimeService : nsISupports
{
    readonly attribute JSRuntime        runtime;
    readonly attribute nsIXPCScriptable backstagePass;

    /**
     * Register additional GC callback which will run after the
     * standard XPConnect callback.
     */
    [noscript, notxpcom] void registerGCCallback(in JSGCCallback func);
    [noscript, notxpcom] void unregisterGCCallback(in JSGCCallback func);
};