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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 { int value; 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) { struct object *o = object_container(e); free(o); return; } void function(void) { ck_epoch_record_t *record; struct object *n; record = malloc(sizeof *record); ck_epoch_register(&epoch, record, NULL); n = malloc(sizeof *n); if (n == NULL) return; n->value = 1; /* * We are using an epoch section here because there are multiple * writers. It is also an option to use other forms of blocking * write-side synchronization such as mutexes. */ ck_epoch_begin(record); n = ck_pr_fas_ptr(&global, n); ck_epoch_end(record); /* Defer destruction of previous object. */ ck_epoch_call(record, &n->epoch_entry, destroy_object); /* Poll epoch sub-system in non-blocking manner. */ ck_epoch_poll(record); 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)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | EXAMPLE | RETURN VALUES | ERRORS | SEE ALSO
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