diff options
Diffstat (limited to 'doc/ck_pr_bts')
| -rw-r--r-- | doc/ck_pr_bts | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/doc/ck_pr_bts b/doc/ck_pr_bts new file mode 100644 index 0000000..955855d --- /dev/null +++ b/doc/ck_pr_bts @@ -0,0 +1,90 @@ +.\" +.\" Copyright 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 11, 2013 +.Dt ck_pr_bts 3 +.Sh NAME +.Nm ck_pr_bts_ptr , +.Nm ck_pr_bts_uint , +.Nm ck_pr_bts_int , +.Nm ck_pr_bts_64 , +.Nm ck_pr_bts_32 , +.Nm ck_pr_bts_16 +.Nd atomic bit test-and-set operations +.Sh LIBRARY +Concurrency Kit (libck, \-lck) +.Sh SYNOPSIS +.In ck_pr.h +.Ft bool +.Fn ck_pr_bts_ptr "void *target" "unsigned int bit_index" +.Ft bool +.Fn ck_pr_bts_uint "uint *target" "unsigned int bit_index" +.Ft bool +.Fn ck_pr_bts_int "int *target" "unsigned int bit_index" +.Ft bool +.Fn ck_pr_bts_64 "uint64_t *target" "unsigned int bit_index" +.Ft bool +.Fn ck_pr_bts_32 "uint32_t *target" "unsigned int bit_index" +.Ft bool +.Fn ck_pr_bts_16 "uint16_t *target" "unsigned int bit_index" +.Sh DESCRIPTION +The +.Fn ck_pr_bts 3 +family of functions atomically fetch the value +of the bit in +.Fa target +at index +.Fa bit_index +and set that bit to 1. +.Sh RETURN VALUES +This family of functions returns the original value of +the bit at offset +.Fa bit_index +that is in the value pointed to by +.Fa target . +.Sh SEE ALSO +.Xr ck_pr_fence_load 3 , +.Xr ck_pr_fence_load_depends 3 , +.Xr ck_pr_fence_store 3 , +.Xr ck_pr_fence_memory 3 , +.Xr ck_pr_load 3 , +.Xr ck_pr_store 3 , +.Xr ck_pr_fas 3 , +.Xr ck_pr_faa 3 , +.Xr ck_pr_inc 3 , +.Xr ck_pr_dec 3 , +.Xr ck_pr_neg 3 , +.Xr ck_pr_not 3 , +.Xr ck_pr_sub 3 , +.Xr ck_pr_and 3 , +.Xr ck_pr_or 3 , +.Xr ck_pr_xor 3 , +.Xr ck_pr_add 3 , +.Xr ck_pr_btc 3 , +.Xr ck_pr_btr 3 , +.Xr ck_pr_cas 3 +.Pp +Additional information available at http://concurrencykit.org/ |