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Diffstat (limited to 'doc/ck_ring_enqueue_spmc_size')
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diff --git a/doc/ck_ring_enqueue_spmc_size b/doc/ck_ring_enqueue_spmc_size deleted file mode 100644 index eb30cab99ad4..000000000000 --- a/doc/ck_ring_enqueue_spmc_size +++ /dev/null @@ -1,127 +0,0 @@ -.\" -.\" Copyright 2012-2013 Samy Al Bahra. -.\" All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND -.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE -.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -.\" SUCH DAMAGE. -.\" -.\" -.Dd April 20, 2013 -.Dt CK_RING_ENQUEUE_SPMC_SIZE 3 -.Sh NAME -.Nm ck_ring_enqueue_spmc_size -.Nd enqueue pointer into bounded FIFO and return size of buffer -.Sh LIBRARY -Concurrency Kit (libck, \-lck) -.Sh SYNOPSIS -.In ck_ring.h -.Ft bool -.Fn ck_ring_enqueue_spmc_size "ck_ring_t *ring" "ck_ring_buffer_t *buffer" "void *entry" "unsigned int *length" -.Sh DESCRIPTION -The -.Fn ck_ring_enqueue_spmc 3 -function enqueues the pointer -.Fa entry -into the bounded buffer pointed to by -.Fa ring -in FIFO fashion. -The buffer pointed to by -.Fa buffer -must be unique to -.Fa ring -and point to an array of ck_ring_buffer_t of sufficient -length (according to the power-of-2 elements in the buffer). -The decoupling of the ring from the buffer serves -to address use-cases involving multiple address spaces -and DMA, among others. -If you are on non-POSIX platforms or wish for strict -compliance with C, then it is recommended to pass a -pointer of type void ** for -.Fa entry . -This function is safe to call without locking for UINT_MAX -concurrent invocations of -.Fn ck_ring_dequeue_spmc 3 -or -.Fn ck_ring_trydequeue_spmc 3 . -This function provides wait-free progress -guarantees for one active invocation. -.Sh EXAMPLE -.Bd -literal -offset indent -#include <ck_ring.h> - -/* This ring was previously initialized with ck_ring_init. */ -ck_ring_t ring; - -/* The ring was initialized for 1023 elements. */ -ck_ring_buffer_t buffer[1024]; - -void -enqueue(void) -{ - void *entry = some_object; - unsigned int length; - - /* Attempt to enqueue pointer to some_object into buffer. */ - if (ck_ring_enqueue_spmc_size(&ring, &buffer, &entry, &length) == false) { - /* - * The buffer was full and the enqueue operation - * has failed. - */ - return; - } - - /* - * If entry was the 101st or greater pointer in the buffer, - * do something. - */ - if (length > 100) { - do_something; - } - - return; -} -.Ed -.Sh RETURN VALUES -The function returns true if the value of -.Fa entry -was successfully enqueued into -.Fa ring . -The function will return false if the value of -.Fa entry -could not be enqueued which only occurs if -.Fa ring -was full. The number of entries in the buffer -with respect to the point in time that -.Fa entry -is enqueued is stored in the integer pointed to by -.Fa length . -.Sh SEE ALSO -.Xr ck_ring_init 3 , -.Xr ck_ring_dequeue_spmc 3 , -.Xr ck_ring_trydequeue_spmc 3 , -.Xr ck_ring_enqueue_spmc 3 , -.Xr ck_ring_dequeue_spsc 3 , -.Xr ck_ring_enqueue_spsc 3 , -.Xr ck_ring_enqueue_spsc_size 3 , -.Xr ck_ring_capacity 3 , -.Xr ck_ring_size 3 -.Pp -Additional information available at http://concurrencykit.org/ |