Man page - ck_epoch_synchronize(3)
Packages contas this manual
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- ck_pr_fence_store_atomic(3)
- ck_ht_entry_key(3)
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- ck_rhs_put_unique(3)
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- ck_pr_fence_memory(3)
- ck_ht_put_spmc(3)
- ck_bitmap_bts(3)
- ck_rhs_next(3)
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- ck_pr_fence_load_atomic(3)
- ck_pr_fence_atomic_store(3)
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- ck_pr_bts(3)
- ck_ring_enqueue_spmc_size(3)
- ck_hs_gc(3)
- ck_ring_dequeue_spmc(3)
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- ck_rwlock(3)
- ck_bitmap_union(3)
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- ck_rhs_apply(3)
- ck_sequence(3)
- ck_rhs_init(3)
- ck_rhs_remove(3)
- ck_pflock(3)
- ck_epoch_poll(3)
- ck_hs_set(3)
- ck_pr_fence_acquire(3)
- ck_pr_fas(3)
- ck_bitmap_test(3)
- ck_pr_store(3)
- ck_hs_stat(3)
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- ck_pr_fence_atomic(3)
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- ck_ht_entry_value(3)
- ck_hs_rebuild(3)
- ck_array_put(3)
- ck_array_remove(3)
- ck_ring_init(3)
- ck_ht_entry_key_direct(3)
- ck_hs_get(3)
- ck_pr_btc(3)
- ck_rhs_put(3)
- ck_bitmap_base(3)
- ck_pr_fence_release(3)
- ck_bitmap_bits(3)
- ck_array_deinit(3)
- ck_ht_hash_direct(3)
- ck_hs_remove(3)
- ck_rhs_get(3)
- ck_hs_move(3)
- ck_pr_neg(3)
- ck_hs_put(3)
- ck_pr_btr(3)
- ck_epoch_reclaim(3)
- ck_epoch_begin(3)
- ck_bitmap_set(3)
- ck_hs_next(3)
- ck_epoch_end(3)
- ck_rhs_set(3)
- ck_ring_dequeue_spsc(3)
- ck_cohort(3)
- ck_ring_enqueue_spsc(3)
- ck_ht_set_spmc(3)
- ck_pr_faa(3)
- ck_pr_and(3)
- ck_hs_reset(3)
- ck_hs_reset_size(3)
- ck_pr_cas(3)
- ck_ht_grow_spmc(3)
- ck_array_initialized(3)
- ck_pr_fence_load_depends(3)
- ck_pr_not(3)
- ck_ht_entry_key_length(3)
- ck_spinlock(3)
- ck_rhs_grow(3)
- ck_elide(3)
- ck_hs_destroy(3)
- ck_hs_apply(3)
- ck_epoch_init(3)
- ck_pr_rtm(3)
- ck_epoch_barrier(3)
- ck_ring_enqueue_spmc(3)
- ck_bitmap_next(3)
- ck_ht_iterator_init(3)
- ck_rhs_destroy(3)
- ck_ht_entry_set_direct(3)
- ck_ring_trydequeue_spmc(3)
- ck_ht_count(3)
- ck_hs_init(3)
- ck_pr_barrier(3)
- ck_queue(3)
- ck_pr_stall(3)
- ck_swlock(3)
- ck_rhs_fas(3)
- ck_rhs_reset_size(3)
- ck_epoch_call(3)
- ck_pr(3)
- ck_epoch_unregister(3)
- ck_array_put_unique(3)
- ck_bitmap_iterator_init(3)
- ck_rhs_move(3)
- ck_pr_fence_load_store(3)
- ck_array_commit(3)
- ck_rhs_reset(3)
- ck_pr_fence_load(3)
- ck_hs_count(3)
- ck_hs_put_unique(3)
- ck_ht_hash(3)
- ck_array_init(3)
- ck_rhs_iterator_init(3)
- ck_pr_or(3)
- ck_rwcohort(3)
- ck_pr_dec(3)
- ck_pr_fence_store(3)
- ck_brlock(3)
apt-get install libck-dev
Manual
| CK_EPOCH_SYNCHRONIZE(3) | Library Functions Manual | CK_EPOCH_SYNCHRONIZE(3) |
NAME
ck_epoch_synchronize —
block until a grace period has been detected
LIBRARY
Concurrency Kit (libck, -lck)
SYNOPSIS
#include
<ck_epoch.h>
void
ck_epoch_synchronize(ck_epoch_record_t
*record);
DESCRIPTION
The
ck_epoch_synchronize(3)
function will block the caller until a grace period has been detected,
according to the semantics of epoch reclamation. It is not safe to call this
function on a record that is in an active section. Any objects requiring
safe memory reclamation which are logically deleted are safe for physical
deletion following a call to
ck_epoch_synchronize(3). If
you require that all callbacks be dispatched, then it is suggested that you
use
ck_epoch_barrier(3)
instead or follow a call of
ck_epoch_synchronize(3) with
ck_epoch_reclaim(3).
EXAMPLE
#include <ck_epoch.h>
#include <ck_stack.h>
#include <stdlib.h>
/*
* epoch was previously initialized with ck_epoch_init.
* stack was previously initialized with ck_stack_init.
*/
ck_epoch_t *epoch;
ck_stack_t *stack;
void
function(void)
{
ck_epoch_record_t *record;
ck_stack_entry_t *s;
record = malloc(sizeof *record);
ck_epoch_register(&epoch, record, NULL);
/*
* We are using an epoch section here to guarantee no
* nodes in the stack are deleted while we are dereferencing
* them. This is needed here because there are multiple writers.
* If there was only one thread popping from the this stack,
* then there is no need to ck_epoch_begin/ck_epoch_end.
*/
ck_epoch_begin(record);
/* Logically delete an object. */
s = ck_stack_pop_upmc(stack);
ck_epoch_end(record);
/*
* Wait until no threads could possibly have a reference to the
* object we just popped (assume all threads are simply executing
* ck_stack_pop_upmc).
*/
ck_epoch_synchronize(record);
/* It is now safe to physically delete the object. */
free(s);
return;
}
RETURN VALUES
This function has no return value.
ERRORS
The object pointed to by .Fa record must have been previously
registered via
ck_epoch_register(3).
SEE ALSO
ck_epoch_init(3), ck_epoch_register(3), ck_epoch_unregister(3), ck_epoch_recycle(3), ck_epoch_poll(3), ck_epoch_reclaim(3), ck_epoch_barrier(3), ck_epoch_call(3), ck_epoch_begin(3), ck_epoch_end(3)
Additional information available at http://concurrencykit.org/
| September 2, 2012 |