436fddaa |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: selpk.h,v 1.1 2000/06/17 10:39:19 mdw Exp $ |
4 | * |
5 | * Packet-buffering select handler |
6 | * |
7 | * (c) 1999 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the mLib utilities library. |
13 | * |
14 | * mLib is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * mLib is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with mLib; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: selpk.h,v $ |
33 | * Revision 1.1 2000/06/17 10:39:19 mdw |
34 | * Experimental new support for packet buffering. |
35 | * |
36 | */ |
37 | |
38 | #ifndef MLIB_SELPK_H |
39 | #define MLIB_SELPK_H |
40 | |
41 | #ifdef __cplusplus |
42 | extern "C" { |
43 | #endif |
44 | |
45 | /*----- Header files ------------------------------------------------------*/ |
46 | |
47 | #ifndef MLIB_PKBUF_H |
48 | # include "pkbuf.h" |
49 | #endif |
50 | |
51 | #ifndef MLIB_SEL_H |
52 | # include "sel.h" |
53 | #endif |
54 | |
55 | /*----- Data structures ---------------------------------------------------*/ |
56 | |
57 | typedef struct selpk { |
58 | sel_file reader; /* File selection object */ |
59 | pkbuf pk; /* Packet buffering object */ |
60 | } selpk; |
61 | |
62 | /*----- Functions provided ------------------------------------------------*/ |
63 | |
64 | /* --- @selpk_enable@ --- * |
65 | * |
66 | * Arguments: @selpk *pk@ = pointer to buffer block |
67 | * |
68 | * Returns: --- |
69 | * |
70 | * Use: Enables a buffer for reading, and emits any queued packets |
71 | * to the buffer's owner. |
72 | */ |
73 | |
74 | extern void selpk_enable(selpk */*pk*/); |
75 | |
76 | /* --- @selpk_disable@ --- * |
77 | * |
78 | * Arguments: @selpk *pk@ = pointer to a buffer block |
79 | * |
80 | * Returns: --- |
81 | * |
82 | * Use: Disables a buffer. It won't be read from until it's |
83 | * enabled again. |
84 | */ |
85 | |
86 | extern void selpk_disable(selpk */*pk*/); |
87 | |
88 | /* --- @selpk_want@ --- * |
89 | * |
90 | * Arguments: @selpk *pk@ = pointer to buffer block |
91 | * @size_t want@ = size of packet to read |
92 | * |
93 | * Returns: --- |
94 | * |
95 | * Use: Sets the size of the packet to be read next. |
96 | */ |
97 | |
98 | extern void selpk_setsize(selpk */*pk*/, size_t /*sz*/); |
99 | |
100 | /* --- @selpk_init@ --- * |
101 | * |
102 | * Arguments: @selpk *pk@ = pointer to buffer block |
103 | * @sel_state *s@ = pointer to select state to attach to |
104 | * @int fd@ = file descriptor to listen to |
105 | * @void (*func)(...)@ = function to call |
106 | * @void *p@ = argument for function |
107 | * |
108 | * Returns: --- |
109 | * |
110 | * Use: Initializes a buffer block. |
111 | */ |
112 | |
113 | extern void selpk_init(selpk */*pk*/, |
114 | sel_state */*s*/, |
115 | int /*fd*/, |
116 | void (*/*func*/)(octet */*b*/, size_t /*sz*/, |
117 | pkbuf */*pk*/, size_t */*keep*/, |
118 | void */*p*/), |
119 | void */*p*/); |
120 | |
121 | /* --- @selpk_destroy@ --- * |
122 | * |
123 | * Arguments: @lbuf *b@ = pointer to buffer block |
124 | * |
125 | * Returns: --- |
126 | * |
127 | * Use: Deallocates a packet buffer and frees any resources it owned. |
128 | */ |
129 | |
130 | extern void selpk_destroy(selpk */*pk*/); |
131 | |
132 | /*----- That's all, folks -------------------------------------------------*/ |
133 | |
134 | #ifdef __cplusplus |
135 | } |
136 | #endif |
137 | |
138 | #endif |