Man page - ck_epoch_call(3)
Packages contains this manual
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- ck_bitmap_reset(3)
- ck_pr_fas(3)
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- ck_hs_next(3)
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- ck_pr_and(3)
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- ck_ht_entry_key_length(3)
- ck_rhs_count(3)
- ck_bitmap_buffer(3)
- ck_ht_entry_key_set(3)
- ck_ht_get_spmc(3)
- ck_pr_fence_atomic_store(3)
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- ck_ht_set_spmc(3)
- ck_pr_fence_load_depends(3)
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- ck_pr_fence_acquire(3)
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- ck_pr_fence_store_atomic(3)
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- ck_swlock(3)
- ck_pr(3)
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- ck_ht_entry_key(3)
- ck_rhs_rebuild(3)
- ck_array_init(3)
- ck_rhs_gc(3)
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- ck_ht_entry_set_direct(3)
- ck_ht_entry_value_direct(3)
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- ck_pr_fence_load(3)
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- ck_epoch_unregister(3)
- ck_rhs_reset_size(3)
- ck_ht_init(3)
- ck_ht_gc(3)
- ck_rhs_get(3)
- ck_ring_enqueue_spsc(3)
- ck_pr_load(3)
- ck_epoch_synchronize(3)
- ck_pr_or(3)
- ck_pr_sub(3)
- ck_bitmap_union(3)
- ck_cohort(3)
- ck_rhs_move(3)
- ck_hs_reset(3)
- ck_ring_dequeue_spmc(3)
- ck_ht_entry_key_direct(3)
- ck_hs_apply(3)
- ck_pr_dec(3)
- ck_bitmap_bts(3)
- ck_ring_dequeue_spsc(3)
- ck_pr_fence_load_store(3)
- ck_pr_fence_store(3)
- ck_epoch_end(3)
- ck_rhs_put(3)
- ck_rwlock(3)
- ck_rhs_destroy(3)
- ck_pr_inc(3)
- ck_rhs_stat(3)
- ck_hs_iterator_init(3)
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- ck_hs_remove(3)
- ck_array_put_unique(3)
- ck_array_deinit(3)
- ck_array_put(3)
- ck_spinlock(3)
- ck_rhs_init(3)
- ck_hs_count(3)
- ck_hs_stat(3)
- ck_pr_btr(3)
- ck_ht_entry_set(3)
- ck_epoch_recycle(3)
- ck_hs_put_unique(3)
- ck_epoch_init(3)
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apt-get install libck-dev
Manual
NAME
ck_epoch_call — defer function execution until a grace period
LIBRARY
Concurrency Kit (libck, -lck)
SYNOPSIS
#include
<ck_epoch.h>
typedef struct ck_epoch_entry ck_epoch_entry_t;
typedef void ck_epoch_cb_t(ck_epoch_entry_t *);
void
ck_epoch_call ( ck_epoch_record_t *record , ck_epoch_entry_t *entry , ck_epoch_cb_t *function );
DESCRIPTION
The ck_epoch_call ( 3 ) function will defer the execution of the function pointed to by function until a grace-period has been detected in epoch . The function will be provided the pointer specified by entry . The function will execute at some time in the future via calls to ck_epoch_reclaim ( 3 ), ck_epoch_barrier ( 3 ) or ck_epoch_poll ( 3 ).
EXAMPLE
#include <ck_epoch.h>
#include <ck_stack.h>
#include <stdlib.h>
/*
* epoch was previously initialized with ck_epoch_init.
*/
ck_epoch_t *epoch;
struct object {
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int value; |
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ck_epoch_entry_t epoch_entry; |
};
static struct object *global;
CK_EPOCH_CONTAINER(struct object, epoch_entry, object_container)
void
destroy_object(ck_epoch_entry_t *e)
{
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struct object *o = object_container(e); |
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free(o); |
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return; |
}
void
function(void)
{
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ck_epoch_record_t *record; |
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struct object *n; |
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record = malloc(sizeof *record); |
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ck_epoch_register(&epoch, record, NULL); |
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n = malloc(sizeof *n); |
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if (n == NULL) |
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return; |
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n->value = 1; |
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/* |
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* We are using an epoch section here because there are multiple |
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* writers. It is also an option to use other forms of blocking |
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* write-side synchronization such as mutexes. |
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*/ |
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ck_epoch_begin(record); |
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n = ck_pr_fas_ptr(&global, n); |
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ck_epoch_end(record); |
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/* Defer destruction of previous object. */ |
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ck_epoch_call(record, &n->epoch_entry, destroy_object); |
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/* Poll epoch sub-system in non-blocking manner. */ |
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ck_epoch_poll(record); |
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return; |
}
RETURN VALUES
This function has no return value.
ERRORS
The object pointed to by 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_synchronize (3), ck_epoch_reclaim (3), ck_epoch_barrier (3), ck_epoch_begin (3), ck_epoch_end (3)
Additional information available at http://concurrencykit.org/ September 2, 2012 CK_EPOCH_CALL (3)