| … | |
… | |
| 24 | #include <functional> |
24 | #include <functional> |
| 25 | |
25 | |
| 26 | #include "slog.h" |
26 | #include "slog.h" |
| 27 | #include "iom.h" |
27 | #include "iom.h" |
| 28 | |
28 | |
|
|
29 | tstamp NOW; |
|
|
30 | bool iom_valid; |
|
|
31 | io_manager iom; |
|
|
32 | |
| 29 | inline bool earliest_first (const time_watcher *a, const time_watcher *b) |
33 | inline bool earliest_first (const time_watcher *a, const time_watcher *b) |
| 30 | { |
34 | { |
| 31 | return a->at > b->at; |
35 | return a->at > b->at; |
| 32 | } |
36 | } |
| 33 | |
|
|
| 34 | tstamp NOW; |
|
|
| 35 | |
|
|
| 36 | io_manager iom; |
|
|
| 37 | |
37 | |
| 38 | void time_watcher::set (tstamp when) |
38 | void time_watcher::set (tstamp when) |
| 39 | { |
39 | { |
| 40 | at = when; |
40 | at = when; |
| 41 | |
41 | |
| … | |
… | |
| 59 | { |
59 | { |
| 60 | if (!registered) |
60 | if (!registered) |
| 61 | iom.reg (this); |
61 | iom.reg (this); |
| 62 | } |
62 | } |
| 63 | |
63 | |
|
|
64 | time_watcher::~time_watcher () |
|
|
65 | { |
|
|
66 | if (iom_valid) |
|
|
67 | iom.unreg (this); |
|
|
68 | } |
|
|
69 | |
|
|
70 | io_watcher::~io_watcher () |
|
|
71 | { |
|
|
72 | if (iom_valid) |
|
|
73 | iom.unreg (this); |
|
|
74 | } |
|
|
75 | |
| 64 | void io_manager::reg (io_watcher *w) |
76 | void io_manager::reg (io_watcher *w) |
| 65 | { |
77 | { |
| 66 | pollfd pfd; |
78 | pollfd pfd; |
| 67 | |
|
|
| 68 | pfd.fd = w->fd; |
|
|
| 69 | pfd.events = w->events; |
|
|
| 70 | |
79 | |
| 71 | pfs.push_back (pfd); |
80 | pfs.push_back (pfd); |
| 72 | iow.push_back (w); |
81 | iow.push_back (w); |
|
|
82 | |
|
|
83 | w->p = &(*(pfs.end () - 1)); |
| 73 | } |
84 | } |
| 74 | |
85 | |
| 75 | void io_manager::unreg (io_watcher *w) |
86 | void io_manager::unreg (io_watcher *w) |
| 76 | { |
87 | { |
| 77 | unsigned int sz = iow.size (); |
88 | if (w->p) |
| 78 | unsigned int i = find (iow.begin (), iow.end (), w) - iow.begin (); |
|
|
| 79 | |
|
|
| 80 | if (i != sz) |
|
|
| 81 | { |
89 | { |
|
|
90 | unsigned int sz = iow.size (); |
|
|
91 | unsigned int i = find (iow.begin (), iow.end (), w) - iow.begin (); |
|
|
92 | |
|
|
93 | assert (i != sz); |
|
|
94 | |
| 82 | if (sz == 1) |
95 | if (sz == 1) |
| 83 | { |
96 | { |
| 84 | pfs.clear (); |
97 | pfs.clear (); |
| 85 | iow.clear (); |
98 | iow.clear (); |
| 86 | } |
99 | } |
| … | |
… | |
| 92 | else |
105 | else |
| 93 | { |
106 | { |
| 94 | iow[i] = iow[sz - 1]; iow.pop_back (); |
107 | iow[i] = iow[sz - 1]; iow.pop_back (); |
| 95 | pfs[i] = pfs[sz - 1]; pfs.pop_back (); |
108 | pfs[i] = pfs[sz - 1]; pfs.pop_back (); |
| 96 | } |
109 | } |
|
|
110 | |
|
|
111 | w->p = 0; |
| 97 | } |
112 | } |
| 98 | } |
113 | } |
| 99 | |
114 | |
| 100 | void io_manager::reschedule_time_watchers () |
115 | void io_manager::reschedule_time_watchers () |
| 101 | { |
116 | { |
| 102 | make_heap (tw.begin (), tw.end (), earliest_first); |
117 | make_heap (tw.begin (), tw.end (), earliest_first); |
| 103 | } |
118 | } |
| 104 | |
119 | |
| 105 | void io_manager::reg (time_watcher *w) |
120 | void io_manager::reg (time_watcher *w) |
| 106 | { |
121 | { |
| 107 | if (w->registered) |
|
|
| 108 | slog (L_CRIT, "FATAL: io_manager::reg(time_watcher) called on already-registered watcher"); |
|
|
| 109 | |
|
|
| 110 | w->registered = true; |
122 | w->registered = true; |
| 111 | |
123 | |
| 112 | tw.push_back (w); |
124 | tw.push_back (w); |
| 113 | push_heap (tw.begin (), tw.end (), earliest_first); |
125 | push_heap (tw.begin (), tw.end (), earliest_first); |
| 114 | } |
126 | } |
| … | |
… | |
| 118 | if (w->registered) |
130 | if (w->registered) |
| 119 | { |
131 | { |
| 120 | unsigned int sz = tw.size (); |
132 | unsigned int sz = tw.size (); |
| 121 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
133 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
| 122 | |
134 | |
| 123 | if (i != sz) |
135 | assert (i != sz); |
| 124 | { |
136 | |
| 125 | if (i != sz - 1) |
137 | if (i != sz - 1) |
| 126 | tw[i] = tw[sz - 1]; |
138 | tw[i] = tw[sz - 1]; |
| 127 | |
139 | |
| 128 | tw.pop_back (); |
140 | tw.pop_back (); |
| 129 | reschedule_time_watchers (); |
141 | reschedule_time_watchers (); |
| 130 | } |
|
|
| 131 | |
142 | |
| 132 | w->registered = false; |
143 | w->registered = false; |
| 133 | } |
144 | } |
| 134 | } |
145 | } |
| 135 | |
146 | |
| … | |
… | |
| 191 | w.at = NOW + 86400; // wake up every day, for no good reason |
202 | w.at = NOW + 86400; // wake up every day, for no good reason |
| 192 | } |
203 | } |
| 193 | |
204 | |
| 194 | io_manager::io_manager () |
205 | io_manager::io_manager () |
| 195 | { |
206 | { |
|
|
207 | iom_valid = true; |
|
|
208 | |
| 196 | set_now (); |
209 | set_now (); |
| 197 | idle = new time_watcher (this, &io_manager::idle_cb); |
210 | idle = new time_watcher (this, &io_manager::idle_cb); |
| 198 | idle->start (0); |
211 | idle->start (0); |
| 199 | } |
212 | } |
| 200 | |
213 | |
| 201 | io_manager::~io_manager () |
214 | io_manager::~io_manager () |
| 202 | { |
215 | { |
| 203 | // |
216 | iom_valid = false; |
| 204 | } |
217 | } |
| 205 | |
218 | |
