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Comparing gvpe/src/iom.h (file contents):
Revision 1.8 by pcg, Wed Apr 2 03:06:22 2003 UTC vs.
Revision 1.14 by pcg, Thu Oct 16 02:41:21 2003 UTC

1/* 1/*
2 iom.h -- I/O multiplexor 2 iom.h -- generic I/O multiplexor
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.
… …
19#ifndef VPE_IOM_H__ 20#ifndef VPE_IOM_H__
20#define VPE_IOM_H__ 21#define VPE_IOM_H__
21 22
22#include <vector> 23#include <vector>
23 24
25#include <cassert>
26
24#include <sys/poll.h> 27#include "poll.h"
25 28
26#include "callback.h" 29#include "callback.h"
27#include "slog.h" 30#include "slog.h"
28 31
29typedef double tstamp; 32typedef double tstamp;
… …
33struct io_watcher; 36struct io_watcher;
34struct time_watcher; 37struct time_watcher;
35 38
36class io_manager { 39class io_manager {
37 vector<pollfd> pfs; 40 vector<pollfd> pfs;
38 vector<const io_watcher *> iow; 41 vector<io_watcher *> iow;
39 vector<time_watcher *> tw; // actually a heap 42 vector<time_watcher *> tw; // actually a heap
40 43
41 void idle_cb (tstamp &ts); time_watcher *idle; 44 void idle_cb (time_watcher &w); time_watcher *idle;
42public: 45public:
43 46
44 void reschedule_time_watchers (); 47 void reschedule_time_watchers ();
45 48
46 // register a watcher 49 // register a watcher
47 void reg (int fd, short events, io_watcher *w); 50 void reg (io_watcher *w);
48 void unreg (io_watcher *w); 51 void unreg (io_watcher *w);
49 void reg (time_watcher *w); 52 void reg (time_watcher *w);
50 void unreg (time_watcher *w); 53 void unreg (time_watcher *w);
51 54
52 void loop (); 55 void loop ();
53 56
54 io_manager (); 57 io_manager ();
55 ~io_manager (); 58 ~io_manager ();
56}; 59};
57 60
58extern io_manager iom; 61extern io_manager iom; // a singleton, together with it's construction/destruction problems.
59 62
60struct io_watcher : callback<void, short> { 63struct io_watcher : callback2<void, io_watcher &, short> {
64 bool registered; // already registered?
65 int fd;
66 short events;
67
61 template<class O1, class O2> 68 template<class O1, class O2>
62 io_watcher (O1 *object, void (O2::*method)(short revents)) 69 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short))
63 : callback<void, short>(object,method) 70 : callback2<void, io_watcher &, short>(object,method)
71 , registered(false)
64 { } 72 { }
65 73
66 ~io_watcher () 74 ~io_watcher ();
75
76 void set(int fd_, short events_);
77
78 void set(short events_)
67 { 79 {
68 iom.unreg (this); 80 set (fd, events_);
69 } 81 }
70 82
71 void start (int fd, short events) 83 void start (int fd_, short events_)
72 { 84 {
85 set (fd_, events_);
73 iom.reg (fd, events, this); 86 iom.reg (this);
74 } 87 }
75 88
76 void stop () 89 void stop ()
77 { 90 {
78 iom.unreg (this); 91 iom.unreg (this);
79 } 92 }
80}; 93};
81 94
82#define TSTAMP_CANCEL -1. 95#define TSTAMP_CANCEL -1.
83 96
84struct time_watcher : callback<void, tstamp &> { 97struct time_watcher : callback1<void, time_watcher &> {
85 bool registered; // already registered? 98 bool registered; // already registered?
86 tstamp at; 99 tstamp at;
87 100
88 template<class O1, class O2> 101 template<class O1, class O2>
89 time_watcher (O1 *object, void (O2::*method)(tstamp &)) 102 time_watcher (O1 *object, void (O2::*method)(time_watcher &))
90 : callback<void, tstamp &>(object,method) 103 : callback1<void, time_watcher &>(object,method)
91 , registered(false) 104 , registered(false)
92 { } 105 { }
93 106
94 ~time_watcher () 107 ~time_watcher ();
95 {
96 iom.unreg (this);
97 }
98 108
99 void set (tstamp when); 109 void set (tstamp when);
100 void trigger (); 110 void trigger ();
101 111
102 void operator ()() 112 void operator ()()
103 { 113 {
104 trigger (); 114 trigger ();
105 } 115 }
106 116
107 void start (); 117 void start ()
118 {
119 iom.reg (this);
120 }
121
108 void start (tstamp when) 122 void start (tstamp when)
109 { 123 {
110 set (when); 124 set (when);
125 iom.reg (this);
111 } 126 }
112 127
113 void stop () 128 void stop ()
114 { 129 {
115 iom.unreg (this); 130 iom.unreg (this);

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