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b539b225e3
tidy up man/Makefile.am a bit in the process Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com> Reviewed-by: Steven Dake <sdake@redhat.com>
93 lines
3.3 KiB
Groff
93 lines
3.3 KiB
Groff
.\"/*
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.\" * Copyright (c) 2012 Red Hat, Inc.
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.\" *
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.\" * All rights reserved.
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.\" *
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.\" * Author: Jan Friesse (jfriesse@redhat.com)
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.\" *
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.\" * This software licensed under BSD license, the text of which follows:
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.\" *
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.\" * Redistribution and use in source and binary forms, with or without
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.\" * modification, are permitted provided that the following conditions are met:
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.\" *
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.\" * - Redistributions of source code must retain the above copyright notice,
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.\" * this list of conditions and the following disclaimer.
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.\" * - Redistributions in binary form must reproduce the above copyright notice,
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.\" * this list of conditions and the following disclaimer in the documentation
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.\" * and/or other materials provided with the distribution.
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.\" * - Neither the name of the Red Hat, Inc. nor the names of its
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.\" * contributors may be used to endorse or promote products derived from this
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.\" * software without specific prior written permission.
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.\" *
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.\" * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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.\" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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.\" * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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.\" * THE POSSIBILITY OF SUCH DAMAGE.
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.\" */
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.TH "CMAP_DEC" 3 "03/02/2012" "corosync Man Page" "Corosync Cluster Engine Programmer's Manual"
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.SH NAME
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.P
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cmap_inc \- Decrease already stored value in CMAP
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.SH SYNOPSIS
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.P
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\fB#include <corosync/cmap.h>\fR
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.P
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\fBcs_error_t
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cmap_dec (cmap_handle_t \fIhandle\fB, const char *\fIkey_name\fB);\fR
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.SH DESCRIPTION
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.P
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The
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.B cmap_dec
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function is used to decrease integer value of already stored key inside cmap. The
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.I handle
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argument is connection to CMAP database obtained by calling
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.B cmap_initialize(3)
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function.
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.I key_name
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is name of key to increase value of.
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Function is defined only on values where increase makes sense and is well defined,
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so it can be one of:
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.PP
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\fBCMAP_VALUETYPE_INT8\fR - 8-bit signed interger
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.PP
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\fBCMAP_VALUETYPE_UINT8\fR - 8-bit unsigned integer
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.PP
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\fBCMAP_VALUETYPE_INT16\fR - 16-bit signed interger
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.PP
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\fBCMAP_VALUETYPE_UINT16\fR - 16-bit unsigned integer
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.PP
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\fBCMAP_VALUETYPE_INT32\fR - 32-bit signed interger
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.PP
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\fBCMAP_VALUETYPE_UINT32\fR - 32-bit unsigned integer
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.PP
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\fBCMAP_VALUETYPE_INT64\fR - 64-bit signed interger
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.PP
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\fBCMAP_VALUETYPE_UINT64\fR - 64-bit unsigned integer
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Overflow/underflow is not detected and it's ignored.
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.SH RETURN VALUE
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This call returns the CS_OK value if successful. If value or key_name are unspecified, CS_ERR_INVALID_PARAM
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is returned. CS_ERR_NOT_EXIST error is returned if key doesn't exist (wasn't created by calling
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.B cmap_set(3)
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first). Some of keys may be tagged read-only directly in corosync and seting such key will result in
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CS_ERR_ACCESS error.
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.SH "SEE ALSO"
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.BR cmap_get (3),
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.BR cmap_set (3),
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.BR cmap_initialize (3),
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.BR cmap_overview (8)
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