pthread_cleanup_push_defer_np, pthread_cleanup_pop_restore_np - push and pop
thread cancellation clean-up handlers while saving cancelability type
void pthread_cleanup_push_defer_np(void (*routine)(void *),
void pthread_cleanup_pop_restore_np(int execute);
Compile and link with -pthread
Feature Test Macro Requirements for glibc (see feature_test_macros
These functions are the same as pthread_cleanup_push
(3), except for the differences noted on this page.
onto the thread's stack of cancellation clean-up
handlers. In addition, it also saves the thread's current cancelability type,
and sets the cancelability type to "deferred" (see
(3)); this ensures that cancellation clean-up will
occur even if the thread's cancelability type was "asynchronous"
before the call.
the top-most clean-up handler from the thread's stack of cancellation clean-up
handlers. In addition, it restores the thread's cancelability type to its
value at the time of the matching pthread_cleanup_push_defer_np
The caller must ensure that calls to these functions are paired within the same
function, and at the same lexical nesting level. Other restrictions apply, as
described in pthread_cleanup_push
This sequence of calls:
is equivalent to (but shorter and more efficient than):
These functions are nonstandard GNU extensions; hence the suffix "_np"
(nonportable) in the names.