JSPRINCIPALS_HOLD
syntax jsprincipals_hold(cx, principals) jsprincipals_drop(cx, principals) name type description cx jscontext * a context.
... description jsprincipals_hold and jsprincipals_drop are used to manage memory for jsprincipals objects.
...application code that stores a pointer to a jsprincipals object must call jsprincipals_hold(cx, principals) before storing it and jsprincipals_drop(cx, principals) when done with it.
...And 2 more matches

Index
142 jsprincipals_hold jsapi reference, obsolete, spidermonkey jsprincipals_hold and jsprincipals_drop are used to manage memory for jsprincipals objects.

JSPrincipals
use the jsprincipals_hold macro to increment refcount, and use jsprincipals_drop to decrement refcount.