12.4.1.2 Yielding from foreign predicates
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Summary
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Documentation
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Foreign Language Interface
The Foreign Include File
Argument Passing and Control
Yielding from foreign predicates
PL_yield_address()
PL_can_yield()
Packages
Availability:
C-language interface function
int
PL_can_yield
(
void
)
Returns
TRUE
when called from inside a foreign predicate if the query that (indirectly) calls this foreign predicate can yield using
PL_yield_address()
. Returns
FALSE
when either there is no current query or the query cannot yield.