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