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20 | #ifndef VPE_IOM_H__ |
20 | #ifndef VPE_IOM_H__ |
21 | #define VPE_IOM_H__ |
21 | #define VPE_IOM_H__ |
22 | |
22 | |
23 | #include <cassert> |
23 | #include <cassert> |
24 | |
24 | |
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25 | #include "callback.h" |
25 | #include "rxvtvec.h" |
26 | #include "rxvtvec.h" |
26 | #include "callback.h" |
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27 | |
27 | |
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28 | #ifndef IOM_IO |
28 | #define IOM_IO 1 |
29 | # define IOM_IO 1 |
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30 | #endif |
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31 | #ifndef IOM_TIME |
29 | #define IOM_TIME 1 |
32 | # define IOM_TIME 1 |
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33 | #endif |
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34 | #ifndef IOM_CHECK |
30 | #define IOM_CHECK 1 |
35 | # define IOM_CHECK 1 |
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36 | #endif |
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37 | #ifndef IOM_IDLE |
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38 | # define IOM_IDLE 0 |
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39 | #endif |
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40 | |
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41 | typedef double tstamp; |
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42 | extern tstamp NOW; |
31 | |
43 | |
32 | #if IOM_IO |
44 | #if IOM_IO |
33 | typedef double tstamp; |
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34 | extern tstamp NOW; |
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35 | |
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36 | struct io_watcher; |
45 | struct io_watcher; |
37 | #endif |
46 | #endif |
38 | #if IOM_TIME |
47 | #if IOM_TIME |
39 | struct time_watcher; |
48 | struct time_watcher; |
40 | #endif |
49 | #endif |
41 | #if IOM_CHECK |
50 | #if IOM_CHECK |
42 | struct check_watcher; |
51 | struct check_watcher; |
43 | #endif |
52 | #endif |
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53 | #if IOM_IDLE |
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54 | struct idle_watcher; |
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55 | #endif |
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56 | |
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57 | template<class watcher> |
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58 | struct io_manager_vec : protected simplevec<watcher *> { |
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59 | friend class io_manager; |
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60 | protected: |
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61 | void erase_unordered (unsigned int pos) |
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62 | { |
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63 | watcher *w = (*this)[size () - 1]; |
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64 | pop_back (); |
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65 | |
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66 | if (size ()) |
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67 | if ((*this)[pos] = w) |
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68 | w->active = pos + 1; |
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69 | } |
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70 | }; |
44 | |
71 | |
45 | class io_manager { |
72 | class io_manager { |
46 | #if IOM_IO |
73 | #if IOM_IO |
47 | simplevec<io_watcher *> iow; |
74 | io_manager_vec<io_watcher> iow; |
48 | #endif |
75 | #endif |
49 | #if IOM_CHECK |
76 | #if IOM_CHECK |
50 | simplevec<check_watcher *> cw; |
77 | io_manager_vec<check_watcher> cw; |
51 | #endif |
78 | #endif |
52 | #if IOM_TIME |
79 | #if IOM_TIME |
53 | simplevec<time_watcher *> tw; |
80 | io_manager_vec<time_watcher> tw; |
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81 | #endif |
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82 | #if IOM_IDLE |
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83 | io_manager_vec<idle_watcher> iw; |
54 | #endif |
84 | #endif |
55 | |
85 | |
56 | template<class watcher> |
86 | template<class watcher> |
57 | void reg (watcher *w, simplevec<watcher *> &queue); |
87 | void reg (watcher *w, simplevec<watcher *> &queue); |
58 | |
88 | |
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60 | void unreg (watcher *w, simplevec<watcher *> &queue); |
90 | void unreg (watcher *w, simplevec<watcher *> &queue); |
61 | |
91 | |
62 | public: |
92 | public: |
63 | // register a watcher |
93 | // register a watcher |
64 | #if IOM_IO |
94 | #if IOM_IO |
65 | void reg (io_watcher *w); void unreg (io_watcher *w); |
95 | void reg (io_watcher *w); void unreg (io_watcher *w); |
66 | #endif |
96 | #endif |
67 | #if IOM_TIME |
97 | #if IOM_TIME |
68 | void reg (time_watcher *w); void unreg (time_watcher *w); |
98 | void reg (time_watcher *w); void unreg (time_watcher *w); |
69 | #endif |
99 | #endif |
70 | #if IOM_CHECK |
100 | #if IOM_CHECK |
71 | void reg (check_watcher *w); void unreg (check_watcher *w); |
101 | void reg (check_watcher *w); void unreg (check_watcher *w); |
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102 | #endif |
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103 | #if IOM_IDLE |
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104 | void reg (idle_watcher *w); void unreg (idle_watcher *w); |
72 | #endif |
105 | #endif |
73 | |
106 | |
74 | void loop (); |
107 | void loop (); |
75 | |
108 | |
76 | io_manager (); |
109 | io_manager (); |
77 | ~io_manager (); |
110 | ~io_manager (); |
78 | }; |
111 | }; |
79 | |
112 | |
80 | extern io_manager iom; // a singleton, together with it's construction/destruction problems. |
113 | extern io_manager iom; // a singleton, together with it's construction/destruction problems. |
81 | |
114 | |
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115 | struct watcher { |
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116 | int active; /* 0 == inactive, else index into respective vector */ |
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117 | |
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118 | watcher() : active(0) { } |
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119 | }; |
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120 | |
82 | #if IOM_IO |
121 | #if IOM_IO |
83 | enum { EVENT_READ = 1, EVENT_WRITE = 2 }; |
122 | enum { EVENT_READ = 1, EVENT_WRITE = 2 }; |
84 | |
123 | |
85 | struct io_watcher : callback2<void, io_watcher &, short> { |
124 | struct io_watcher : watcher, callback2<void, io_watcher &, short> { |
86 | int fd; |
125 | int fd; |
87 | short events; |
126 | short events; |
88 | |
127 | |
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128 | void set (int fd_, short events_) { fd = fd_; events = events_; } |
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129 | |
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130 | void set (short events_) { set (fd, events_); } |
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131 | void start () { iom.reg (this); } |
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132 | void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } |
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133 | void stop () { iom.unreg (this); } |
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134 | |
89 | template<class O1, class O2> |
135 | template<class O1, class O2> |
90 | io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) |
136 | io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) |
91 | : callback2<void, io_watcher &, short>(object,method) |
137 | : callback2<void, io_watcher &, short>(object,method) |
92 | { } |
138 | { } |
93 | |
139 | ~io_watcher () { stop (); } |
94 | ~io_watcher (); |
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95 | |
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96 | void set(int fd_, short events_) { fd = fd_; events = events_; } |
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97 | |
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98 | void set(short events_) { set (fd, events_); } |
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99 | void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } |
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100 | void stop () { iom.unreg (this); } |
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101 | }; |
140 | }; |
102 | #endif |
141 | #endif |
103 | |
142 | |
104 | #if IOM_TIME |
143 | #if IOM_TIME |
105 | enum { TSTAMP_CANCEL = -1 }; |
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106 | |
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107 | struct time_watcher : callback1<void, time_watcher &> { |
144 | struct time_watcher : watcher, callback1<void, time_watcher &> { |
108 | tstamp at; |
145 | tstamp at; |
109 | |
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110 | template<class O1, class O2> |
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111 | time_watcher (O1 *object, void (O2::*method)(time_watcher &)) |
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112 | : callback1<void, time_watcher &>(object,method) |
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113 | { } |
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114 | |
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115 | ~time_watcher (); |
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116 | |
146 | |
117 | void trigger (); |
147 | void trigger (); |
118 | |
148 | |
119 | void set (tstamp when) { at = when; } |
149 | void set (tstamp when) { at = when; } |
120 | void operator ()() { trigger (); } |
150 | void operator ()() { trigger (); } |
121 | void start () { iom.reg (this); } |
151 | void start () { iom.reg (this); } |
122 | void start (tstamp when) { set (when); iom.reg (this); } |
152 | void start (tstamp when) { set (when); iom.reg (this); } |
123 | void stop () { iom.unreg (this); } |
153 | void stop () { iom.unreg (this); } |
124 | |
154 | |
125 | void reset (tstamp when = TSTAMP_CANCEL) |
155 | template<class O1, class O2> |
126 | { |
156 | time_watcher (O1 *object, void (O2::*method)(time_watcher &)) |
127 | stop (); |
157 | : callback1<void, time_watcher &>(object,method) |
128 | at = when; |
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129 | } |
158 | { } |
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159 | ~time_watcher () { stop (); } |
130 | }; |
160 | }; |
131 | #endif |
161 | #endif |
132 | |
162 | |
133 | #if IOM_CHECK |
163 | #if IOM_CHECK |
134 | // run before checking for new events |
164 | // run before checking for new events |
135 | struct check_watcher : callback1<void, check_watcher &> { |
165 | struct check_watcher : watcher, callback1<void, check_watcher &> { |
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166 | void start () { iom.reg (this); } |
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167 | void stop () { iom.unreg (this); } |
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168 | |
136 | template<class O1, class O2> |
169 | template<class O1, class O2> |
137 | check_watcher (O1 *object, void (O2::*method)(check_watcher &)) |
170 | check_watcher (O1 *object, void (O2::*method)(check_watcher &)) |
138 | : callback1<void, check_watcher &>(object,method) |
171 | : callback1<void, check_watcher &>(object,method) |
139 | { } |
172 | { } |
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173 | ~check_watcher () { stop (); } |
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174 | }; |
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175 | #endif |
140 | |
176 | |
141 | ~check_watcher (); |
177 | #if IOM_IDLE |
142 | |
178 | // run after checking for any i/o, but before waiting |
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179 | struct idle_watcher : watcher, callback1<void, idle_watcher &> { |
143 | void start () { iom.reg (this); } |
180 | void start () { iom.reg (this); } |
144 | void stop () { iom.unreg (this); } |
181 | void stop () { iom.unreg (this); } |
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182 | |
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183 | template<class O1, class O2> |
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184 | idle_watcher (O1 *object, void (O2::*method)(idle_watcher &)) |
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185 | : callback1<void, idle_watcher &>(object,method) |
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186 | { } |
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187 | ~idle_watcher () { stop (); } |
145 | }; |
188 | }; |
146 | #endif |
189 | #endif |
147 | |
190 | |
148 | #endif |
191 | #endif |
149 | |
192 | |