2 .\" Copyright (c) 2012 Vishesh Yadav
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
11 .\" notice, this list of conditions and the following disclaimer in the
12 .\" documentation and/or other materials provided with the distribution.
13 .\" 3. The name of the author may not be used to endorse or promote products
14 .\" derived from this software without specific prior written permission.
16 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 .Nm idr_get_new_above ,
42 .Nd integer ID management library
46 .Fn idr_destroy "struct idr *idp"
48 .Fn idr_find "struct idr *idp" "int id"
50 .Fn idr_for_each "struct idr *idp" "int (*fn)(int id, void *p, void *data)" "void *data"
52 .Fn idr_get_new "struct idr *idp" "void *ptr" "int *id"
54 .Fn idr_get_new_above "struct idr *idp" "void *ptr" "int sid" "int *id"
56 .Fn idr_init "struct idr *idp"
58 .Fn idr_pre_get "struct idr *idp" "unsigned gfp_mask"
60 .Fn idr_remove "struct idr *idp" "int id"
62 .Fn idr_remove_all "struct idr *idp"
64 .Fn idr_replace "struct idr *idp" "void *ptr" "int id"
68 function initialize an
70 handle that will be used by other functions of this API.
74 function frees all resources taken by the specified
81 function returns the data pointer that is mapped with the specified
86 function iterates through all pointers registered with the specified
90 and calls the callback function
93 It is not safe to modify the
95 tree through the callback function.
96 If the callback function returns a non-zero integer, it stops and returns the
102 .Fn idr_get_new_above
103 functions allocate a new integer mapped with the specified pointer
105 The new ID will be stored in
107 If the tree becomes full, these functions will return
111 should be called to grow the tree.
115 function should be called prior to calling
118 .Fn idr_get_new_above
119 and preallocates enough memory for subsequent calls to these functions.
120 It should be called without any locks held and returns 1 if enough memory
121 was successfully allocated, otherwise 0.
124 is only present for compatibility with the Linux implementation of
125 this API and is unused on
130 function removes the specified
136 function removes all entries in the
143 function replaces the pointer for the specified
149 if the pointer is not found.
150 This behavior is different from the Linux API.