| 1 | /* |
1 | /* |
| 2 | iom.h -- I/O multiplexor |
2 | iom.h -- generic I/O multiplexor |
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3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
| 3 | |
4 | |
| 4 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
6 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 2 of the License, or |
7 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
8 | (at your option) any later version. |
| … | |
… | |
| 21 | |
22 | |
| 22 | #include <vector> |
23 | #include <vector> |
| 23 | |
24 | |
| 24 | #include <cassert> |
25 | #include <cassert> |
| 25 | |
26 | |
| 26 | #include <sys/poll.h> |
27 | #include "poll.h" |
| 27 | |
28 | |
| 28 | #include "callback.h" |
29 | #include "callback.h" |
| 29 | #include "slog.h" |
30 | #include "slog.h" |
| 30 | |
31 | |
| 31 | typedef double tstamp; |
32 | typedef double tstamp; |
| … | |
… | |
| 58 | }; |
59 | }; |
| 59 | |
60 | |
| 60 | extern io_manager iom; // a singleton, together with it's construction/destruction problems. |
61 | extern io_manager iom; // a singleton, together with it's construction/destruction problems. |
| 61 | |
62 | |
| 62 | struct io_watcher : callback2<void, io_watcher &, short> { |
63 | struct io_watcher : callback2<void, io_watcher &, short> { |
| 63 | pollfd *p; |
64 | bool registered; // already registered? |
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65 | int fd; |
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66 | short events; |
| 64 | |
67 | |
| 65 | template<class O1, class O2> |
68 | template<class O1, class O2> |
| 66 | io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) |
69 | io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) |
| 67 | : callback2<void, io_watcher &, short>(object,method) |
70 | : callback2<void, io_watcher &, short>(object,method) |
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71 | , registered(false) |
| 68 | { } |
72 | { } |
| 69 | |
73 | |
| 70 | ~io_watcher (); |
74 | ~io_watcher (); |
| 71 | |
75 | |
| 72 | void set(int fd, short events) |
76 | void set(int fd_, short events_); |
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77 | |
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78 | void set(short events_) |
| 73 | { |
79 | { |
| 74 | assert (p); |
80 | set (fd, events_); |
| 75 | p->fd = fd; |
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| 76 | p->events = events; |
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| 77 | } |
81 | } |
| 78 | |
82 | |
| 79 | void set(short events) |
83 | void start (int fd_, short events_) |
| 80 | { |
84 | { |
| 81 | assert (p); |
85 | set (fd_, events_); |
| 82 | p->events = events; |
86 | iom.reg (this); |
| 83 | } |
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| 84 | |
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| 85 | void start (int fd, short events) |
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| 86 | { |
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| 87 | iom.reg (this); // make sure pfd is set |
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| 88 | |
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| 89 | p->fd = fd; |
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| 90 | p->events = events; |
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| 91 | } |
87 | } |
| 92 | |
88 | |
| 93 | void stop () |
89 | void stop () |
| 94 | { |
90 | { |
| 95 | iom.unreg (this); |
91 | iom.unreg (this); |
| … | |
… | |
| 116 | void operator ()() |
112 | void operator ()() |
| 117 | { |
113 | { |
| 118 | trigger (); |
114 | trigger (); |
| 119 | } |
115 | } |
| 120 | |
116 | |
| 121 | void start (); |
117 | void start () |
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118 | { |
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119 | iom.reg (this); |
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120 | } |
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121 | |
| 122 | void start (tstamp when) |
122 | void start (tstamp when) |
| 123 | { |
123 | { |
| 124 | set (when); |
124 | set (when); |
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125 | iom.reg (this); |
| 125 | } |
126 | } |
| 126 | |
127 | |
| 127 | void stop () |
128 | void stop () |
| 128 | { |
129 | { |
| 129 | iom.unreg (this); |
130 | iom.unreg (this); |
| 130 | } |
131 | } |
| 131 | |
132 | |
| 132 | void reset (tstamp when = TSTAMP_CANCEL) |
133 | void reset (tstamp when = TSTAMP_CANCEL) |
| 133 | { |
134 | { |
| 134 | stop (); |
135 | stop (); |
| 135 | |
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| 136 | at = when; |
136 | at = when; |
| 137 | } |
137 | } |
| 138 | }; |
138 | }; |
| 139 | |
139 | |
| 140 | #endif |
140 | #endif |
