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21 | |
21 | |
22 | #include <vector> |
22 | #include <vector> |
23 | |
23 | |
24 | #include <sys/poll.h> |
24 | #include <sys/poll.h> |
25 | |
25 | |
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26 | #include "callback.h" |
26 | #include "slog.h" |
27 | #include "slog.h" |
27 | |
28 | |
28 | typedef double tstamp; |
29 | typedef double tstamp; |
29 | |
30 | |
30 | extern tstamp NOW; |
31 | extern tstamp NOW; |
31 | |
32 | |
32 | template<class R, class A> class callback; |
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33 | struct io_watcher; |
33 | struct io_watcher; |
34 | struct time_watcher; |
34 | struct time_watcher; |
35 | |
35 | |
36 | class io_manager { |
36 | class io_manager { |
37 | vector<pollfd> pfs; |
37 | vector<pollfd> pfs; |
38 | vector<io_watcher *> iow; |
38 | vector<io_watcher *> iow; |
39 | vector<time_watcher *> tw; // actually a heap |
39 | vector<time_watcher *> tw; // actually a heap |
40 | |
40 | |
41 | void idle_cb (tstamp &ts); time_watcher *idle; |
41 | void idle_cb (time_watcher &w); time_watcher *idle; |
42 | public: |
42 | public: |
43 | |
43 | |
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44 | void reschedule_time_watchers (); |
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45 | |
44 | // register a watcher |
46 | // register a watcher |
45 | void reg (int fd, short events, io_watcher *w); |
47 | void reg (io_watcher *w); |
46 | void unreg (io_watcher *w); |
48 | void unreg (io_watcher *w); |
47 | void reg (time_watcher *w); |
49 | void reg (time_watcher *w); |
48 | void unreg (time_watcher *w); |
50 | void unreg (time_watcher *w); |
49 | |
51 | |
50 | void loop (); |
52 | void loop (); |
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53 | ~io_manager (); |
55 | ~io_manager (); |
54 | }; |
56 | }; |
55 | |
57 | |
56 | extern io_manager iom; |
58 | extern io_manager iom; |
57 | |
59 | |
58 | template<class R, class A> |
60 | struct io_watcher : callback2<void, io_watcher &, short> { |
59 | class callback { |
61 | int fd; |
60 | struct object { }; |
62 | short events; |
61 | |
63 | |
62 | void *obj; |
64 | template<class O1, class O2> |
63 | R (object::*meth)(A arg); |
65 | io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) |
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66 | : callback2<void, io_watcher &, short>(object,method) |
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67 | { } |
64 | |
68 | |
65 | // a proxy is a kind of recipe on how to call a specific class method |
69 | ~io_watcher () |
66 | struct proxy_base { |
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67 | virtual R call (void *obj, void (object::*meth)(A), A arg) = 0; |
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68 | }; |
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69 | template<class O1, class O2> |
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70 | struct proxy : proxy_base { |
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71 | virtual R call (void *obj, void (object::*meth)(A), A arg) |
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72 | { |
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73 | ((reinterpret_cast<O1 *>(obj)) ->* (reinterpret_cast<void (O2::*)(A)>(meth))) |
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74 | (arg); |
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75 | } |
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76 | }; |
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77 | |
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78 | proxy_base *prxy; |
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79 | |
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80 | public: |
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81 | template<class O1, class O2> |
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82 | callback (O1 *object, void (O2::*method)(A)) |
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83 | { |
70 | { |
84 | static proxy<O1,O2> p; |
71 | iom.unreg (this); |
85 | obj = reinterpret_cast<void *>(object); |
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86 | meth = reinterpret_cast<void (object::*)(A)>(method); |
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87 | prxy = &p; |
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88 | } |
72 | } |
89 | |
73 | |
90 | R call(A arg) |
74 | void start (int fd_, short events_) |
91 | { |
75 | { |
92 | return prxy->call (obj, meth, arg); |
76 | fd = fd_; |
93 | } |
77 | events = events_; |
94 | |
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95 | R operator ()(A arg) |
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96 | { |
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97 | return call (arg); |
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98 | } |
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99 | }; |
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100 | |
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101 | struct io_watcher : callback<void, short> { |
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102 | template<class O1, class O2> |
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103 | io_watcher (O1 *object, void (O2::*method)(short revents)) |
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104 | : callback<void, short>(object,method) |
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105 | { } |
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106 | |
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107 | void start (int fd, short events) |
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108 | { |
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109 | iom.reg (fd, events, this); |
78 | iom.reg (this); |
110 | } |
79 | } |
111 | |
80 | |
112 | void stop () |
81 | void stop () |
113 | { |
82 | { |
114 | iom.unreg (this); |
83 | iom.unreg (this); |
115 | } |
84 | } |
116 | }; |
85 | }; |
117 | |
86 | |
118 | #define TSTAMP_CANCEL -1. |
87 | #define TSTAMP_CANCEL -1. |
119 | |
88 | |
120 | struct time_watcher : callback<void, tstamp &> { |
89 | struct time_watcher : callback1<void, time_watcher &> { |
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90 | bool registered; // already registered? |
121 | tstamp at; |
91 | tstamp at; |
122 | |
92 | |
123 | template<class O1, class O2> |
93 | template<class O1, class O2> |
124 | time_watcher (O1 *object, void (O2::*method)(tstamp &)) |
94 | time_watcher (O1 *object, void (O2::*method)(time_watcher &)) |
125 | : callback<void, tstamp &>(object,method) |
95 | : callback1<void, time_watcher &>(object,method) |
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96 | , registered(false) |
126 | { } |
97 | { } |
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98 | |
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99 | ~time_watcher () |
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100 | { |
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101 | iom.unreg (this); |
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102 | } |
127 | |
103 | |
128 | void set (tstamp when); |
104 | void set (tstamp when); |
129 | void trigger (); |
105 | void trigger (); |
130 | |
106 | |
131 | void operator ()() |
107 | void operator ()() |