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1 | /* |
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2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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3 | * |
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4 | * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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5 | * |
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6 | * Deliantra is free software: you can redistribute it and/or modify it under |
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7 | * the terms of the Affero GNU General Public License as published by the |
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8 | * Free Software Foundation, either version 3 of the License, or (at your |
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9 | * option) any later version. |
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10 | * |
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11 | * This program is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | * GNU General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the Affero GNU General Public License |
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17 | * and the GNU General Public License along with this program. If not, see |
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18 | * <http://www.gnu.org/licenses/>. |
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19 | * |
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20 | * The authors can be reached via e-mail to <support@deliantra.net> |
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21 | */ |
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22 | |
| 1 | // |
23 | // |
| 2 | // cfperl.h perl interface |
24 | // cfperl.h perl interface |
| 3 | // |
25 | // |
| 4 | #ifndef CFPERL_H__ |
26 | #ifndef CFPERL_H__ |
| 5 | #define CFPERL_H__ |
27 | #define CFPERL_H__ |
| 6 | |
28 | |
| 7 | struct pl; |
29 | using namespace std; |
| 8 | struct object; |
30 | |
| 9 | struct mapstruct; |
31 | #include <EXTERN.h> |
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32 | #include <perl.h> |
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33 | #include <XSUB.h> |
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34 | |
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35 | #include <EVAPI.h> |
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36 | #include <CoroAPI.h> |
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37 | |
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38 | #include "util.h" |
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39 | #include "keyword.h" |
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40 | #include "dynbuf.h" |
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41 | #include "callback.h" |
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42 | |
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43 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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44 | |
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45 | // optimisations/workaround for functions requiring my_perl in scope (anti-bloat) |
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46 | #undef localtime |
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47 | #undef srand48 |
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48 | #undef drand48 |
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49 | #undef srandom |
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50 | #undef opendir |
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51 | #undef readdir |
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52 | #undef closedir |
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53 | #undef getprotobyname |
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54 | #undef gethostbyname |
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55 | #undef ctime |
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56 | #undef strerror |
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57 | #undef _ |
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58 | |
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59 | // same here, massive symbol spamming |
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60 | #undef do_open |
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61 | #undef do_close |
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62 | #undef ref |
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63 | #undef seed |
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64 | |
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65 | // perl bug #40256: perl does overwrite those with reentrant versions |
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66 | // but does not initialise their state structures. |
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67 | #undef random |
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68 | #undef crypt |
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69 | |
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70 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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71 | |
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72 | #define _(msg) (msg) |
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73 | #define N_(msg) (msg) |
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74 | |
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75 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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76 | |
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77 | // some macros to simplify perl in-calls |
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78 | |
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79 | #define CHECK_ERROR \ |
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80 | if (SvTRUE (ERRSV)) \ |
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81 | LOG (llevError, "runtime error in %s: %s", __func__, SvPVutf8_nolen (ERRSV)); |
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82 | |
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83 | inline int call_pvsv (const char *ob, I32 flags) { return call_pv (ob, flags); } |
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84 | inline int call_pvsv (SV *ob, I32 flags) { return call_sv (ob, flags); } |
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85 | |
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86 | // TODO: temporarily enabled pushstack/popstack for all calls from the core, to maybe fix object memleak? |
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87 | #define CALL_PUSH PUSHSTACKi (PERLSI_UNKNOWN) |
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88 | #define CALL_POP PUTBACK; POPSTACK; SPAGAIN |
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89 | #define CALL_BEGIN(args) dSP; CALL_PUSH; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args) |
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90 | #define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc |
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91 | #define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr))) |
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92 | #define CALL_CALL(name, flags) PUTBACK; int count = call_pvsv (name, (flags) | G_EVAL); SPAGAIN; |
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93 | #define CALL_END PUTBACK; CHECK_ERROR; FREETMPS; LEAVE; CALL_POP |
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94 | |
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95 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 10 | |
96 | |
| 11 | void cfperl_init (); |
97 | void cfperl_init (); |
| 12 | void cfperl_main (); |
98 | void cfperl_main (); |
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99 | void cfperl_tick (); |
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100 | void cfperl_emergency_save (); |
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101 | void cfperl_cleanup (int make_core); |
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102 | void cfperl_make_book (object *book, int level); |
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103 | void cfperl_send_msg (client *ns, int color, const_utf8_string type, const_utf8_string msg); |
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104 | int cfperl_can_merge (object *ob1, object *ob2); |
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105 | void cfperl_mapscript_activate (object *ob, int state, object *activator, object *originator = 0); |
| 13 | |
106 | |
| 14 | // could have used templates, but a more traditional C api |
107 | bool is_match_expr (const_utf8_string expr); |
| 15 | // uses more explicit typing which is ok for this purpose. |
108 | // applies the match expression and returns true if it matches |
| 16 | enum data_type |
109 | bool match (const_utf8_string expr, object *ob, object *self = 0, object *source = 0, object *originator = 0); |
| 17 | { |
110 | // same as above, but returns the first object found, or 0 |
| 18 | DT_END, // no further arguments |
111 | object *match_one (const_utf8_string expr, object *ob, object *self = 0, object *source = 0, object *originator = 0); |
| 19 | DT_INT, |
112 | |
| 20 | DT_INT64, |
113 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 21 | DT_DOUBLE, |
114 | |
| 22 | DT_STRING, // 0-terminated string |
115 | #if IVSIZE >= 8 |
| 23 | DT_DATA, // string + length |
116 | typedef IV val64; |
| 24 | DT_OBJECT, |
117 | typedef IV uval64; |
| 25 | DT_MAP, |
118 | # define newSVval64 newSViv |
| 26 | DT_PLAYER, |
119 | # define SvVAL64 SvIV |
| 27 | DT_ARCH, |
120 | # define newSVuval64 newSVuv |
| 28 | DT_PARTY, |
121 | # define SvUVAL64 SvUV |
| 29 | DT_REGION, |
122 | #else |
| 30 | DT_AV, // av that needs to be flattened out |
123 | typedef double val64; |
| 31 | }; |
124 | typedef double uval64; |
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125 | # define newSVval64 newSVnv |
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126 | # define SvVAL64 SvNV |
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127 | # define newSVuval64 newSVnv |
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128 | # define SvUVAL64 SvNV |
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129 | #endif |
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130 | |
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131 | extern tstamp runtime; // virtual server time, excluding time jumps and lag |
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132 | extern tstamp NOW; // real time of current server tick |
| 32 | |
133 | |
| 33 | enum event_klass |
134 | enum event_klass |
| 34 | { |
135 | { |
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136 | KLASS_NONE, |
| 35 | KLASS_GLOBAL, |
137 | KLASS_GLOBAL, |
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138 | KLASS_ATTACHABLE, |
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139 | KLASS_CLIENT, |
| 36 | KLASS_PLAYER, |
140 | KLASS_PLAYER, |
| 37 | KLASS_OBJECT, |
141 | KLASS_OBJECT, |
| 38 | KLASS_MAP, |
142 | KLASS_MAP, |
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143 | KLASS_COMMAND, |
| 39 | }; |
144 | }; |
| 40 | |
145 | |
| 41 | enum event_type |
146 | enum event_type |
| 42 | { |
147 | { |
| 43 | # define def(klass,name) EVENT_ ## klass ## _ ## name, |
148 | # define def(klass,name) EVENT_ ## klass ## _ ## name, |
| 44 | # include "eventinc.h" |
149 | # include "eventinc.h" |
| 45 | # undef def |
150 | # undef def |
| 46 | NUM_EVENT_TYPES |
151 | NUM_EVENT_TYPES |
| 47 | }; |
152 | }; |
| 48 | |
153 | |
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154 | // in which global events or per-type events are we interested |
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155 | extern bitset<NUM_EVENT_TYPES> ev_want_event; |
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156 | extern bitset<NUM_TYPES> ev_want_type; |
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157 | |
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158 | #define ARG_AV(o) DT_AV , static_cast<AV *> (o) |
| 49 | #define ARG_INT(v) DT_INT , static_cast<int> (v) |
159 | #define ARG_INT(v) DT_INT , static_cast<int> (v) |
| 50 | #define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) |
160 | #define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) |
| 51 | #define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) |
161 | #define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) |
| 52 | #define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) |
162 | #define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) |
| 53 | #define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), (l) |
163 | #define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l) |
| 54 | #define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<struct object *> (o) |
164 | #define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o)) |
| 55 | #define ARG_MAP(o) DT_MAP , (void *)static_cast<struct mapstruct *> (o) |
165 | #define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o)) |
| 56 | #define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<struct pl *> (o) |
166 | #define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o)) |
| 57 | #define ARG_ARCH(o) DT_ARCH , (void *)static_cast<struct archetype *> (o) |
167 | #define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o)) |
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168 | #define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o)) |
| 58 | #define ARG_PARTY(o) DT_PARTY , (void *)static_cast<struct party *> (o) |
169 | #define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o)) |
| 59 | #define ARG_REGION(o) DT_REGION, (void *)static_cast<struct region *> (o) |
170 | #define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o)) |
| 60 | |
171 | |
| 61 | // the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension |
172 | // the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension |
| 62 | |
173 | #define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0) |
| 63 | // all these return true when the normal event processing should be skipped (if any) |
174 | #define INVOKE_GLOBAL(event, ...) INVOKE (&gbl_ev, EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__) |
| 64 | #define INVOKE(klass, event, ...) cfperl_invoke (EVENT_ ## klass ## _ ## event, ## __VA_ARGS__, DT_END) |
175 | #define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__) |
| 65 | |
176 | #define INVOKE_OBJECT(event, obj, ...) INVOKE (obj , EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__) |
| 66 | #define INVOKE_GLOBAL(event, ...) INVOKE (GLOBAL, event, ## __VA_ARGS__) |
177 | #define INVOKE_CLIENT(event, obj, ...) INVOKE (obj , EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__) |
| 67 | #define INVOKE_OBJECT(event, op, ...) INVOKE (OBJECT, event, ARG_OBJECT (op), ## __VA_ARGS__) |
178 | #define INVOKE_PLAYER(event, obj, ...) INVOKE (obj , EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__) |
| 68 | #define INVOKE_PLAYER(event, pl, ...) INVOKE (PLAYER, event, ARG_PLAYER (pl), ## __VA_ARGS__) |
179 | #define INVOKE_MAP(event, obj, ...) INVOKE (obj , EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__) |
| 69 | #define INVOKE_MAP(event, map, ...) INVOKE (MAP , event, ARG_MAP (map) , ## __VA_ARGS__) |
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| 70 | |
180 | |
| 71 | //TODO should index into @result |
181 | //TODO should index into @result |
| 72 | #define RESULT(idx,type) cfperl_result_ ## type (idx) |
182 | #define RESULT(idx,type) cfperl_result_ ## type (idx) |
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183 | #define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE) |
| 73 | #define RESULT_INT(idx) RESULT(idx, INT) |
184 | #define RESULT_INT(idx) RESULT(idx, INT) |
| 74 | |
185 | |
| 75 | bool cfperl_invoke (event_type event, ...); |
186 | double cfperl_result_DOUBLE (int idx); |
| 76 | int cfperl_result_INT (int idx); |
187 | int cfperl_result_INT (int idx); |
| 77 | |
188 | |
| 78 | struct extendable_base |
189 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 79 | { |
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| 80 | void *self, *cb; // CF+ perl self and callback |
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| 81 | const char *attach; // generic extension attachment information |
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| 82 | |
190 | |
| 83 | void clear (); // called when free'ing objects |
191 | INTERFACE_CLASS (attachable) |
| 84 | void optimise (); // possibly save some memory by destroying unneeded data |
192 | struct attachable : refcnt_base |
| 85 | void reattach (data_type type, void *self); // called after swapin |
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| 86 | }; |
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| 87 | |
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| 88 | // objects extendable from perl (or any other extension) should include or |
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| 89 | // derive using the curiously recurring template pattern, to avoid |
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| 90 | // virtual method calls etc. |
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| 91 | template<class subclass> |
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| 92 | struct extendable : extendable_base |
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| 93 | { |
193 | { |
| 94 | void reattach () |
194 | static MGVTBL vtbl; |
| 95 | { |
195 | |
| 96 | if (attach) |
196 | enum { |
| 97 | extendable_base::reattach ( |
197 | F_DESTROYED = 0x01, |
| 98 | static_cast<subclass *>(this)->get_dt (), |
198 | F_DEBUG_TRACE = 0x02, |
| 99 | static_cast<subclass *>(this) |
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| 100 | ); |
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| 101 | } |
199 | }; |
| 102 | }; |
200 | uint8 ACC (RW, attachable_flags); |
| 103 | |
201 | |
| 104 | struct object_freezer |
202 | static unordered_vector<attachable *> mortals; |
| 105 | { |
203 | MTH static void check_mortals (); |
| 106 | const char *filename; |
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| 107 | void *av; |
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| 108 | |
204 | |
| 109 | object_freezer (const char *filename) : filename (filename) { } |
205 | // object is delete'd after the refcount reaches 0 |
| 110 | void put (extendable_base *object); |
206 | MTH int refcnt_cnt () const; |
| 111 | void finish (); |
207 | // check wether the object has died and destroy |
| 112 | }; |
208 | MTH void refcnt_chk () { if (expect_false (refcnt <= 0)) do_check (); } |
| 113 | |
209 | |
| 114 | struct object_thawer |
210 | // destroy the object unless it was already destroyed |
| 115 | { |
211 | // this politely asks everybody interested the reduce |
| 116 | void *av; |
212 | // the refcount to 0 as soon as possible. |
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213 | MTH void destroy (); |
| 117 | |
214 | |
| 118 | object_thawer (const char *filename); |
215 | // return wether an object was destroyed already |
| 119 | void get (extendable_base *object); |
216 | MTH bool destroyed () const { return attachable_flags & F_DESTROYED; } |
| 120 | void finish (); |
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| 121 | }; |
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| 122 | |
217 | |
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218 | // destruct and free the memory for this object |
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219 | virtual void do_delete (); |
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220 | |
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221 | virtual void gather_callbacks (AV *&callbacks, event_type event) const; |
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222 | |
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223 | #if 0 |
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224 | private: |
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225 | static refcounted *rc_first; |
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226 | refcounted *rc_next; |
| 123 | #endif |
227 | #endif |
| 124 | |
228 | |
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229 | HV *self; // CF+ perl self |
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230 | AV *cb; // CF+ callbacks |
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231 | shstr attach; // generic extension attachment information |
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232 | |
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233 | void sever_self (); // sever this object from its self, if it has one. |
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234 | void optimise (); // possibly save some memory by destroying unneeded data |
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235 | |
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236 | attachable () |
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237 | : attachable_flags (0), self (0), cb (0), attach (0) |
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238 | { |
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239 | } |
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240 | |
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241 | attachable (const attachable &src) |
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242 | : attachable_flags (0), self (0), cb (0), attach (src.attach) |
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243 | { |
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244 | } |
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245 | |
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246 | // set a custom key to the given value, or delete it if value = 0 |
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247 | void set_key (const_utf8_string key, const_utf8_string value = 0, bool is_utf8 = 0); |
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248 | |
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249 | void set_key_text (const_utf8_string key, const_utf8_string value = 0) |
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250 | { |
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251 | set_key (key, value, 1); |
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252 | } |
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253 | |
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254 | void set_key_data (const_utf8_string key, const_utf8_string value = 0) |
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255 | { |
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256 | set_key (key, value, 0); |
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257 | } |
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258 | |
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259 | attachable &operator =(const attachable &src); |
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260 | |
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261 | // used to _quickly_ decide wether to shortcut the evaluation |
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262 | bool should_invoke (event_type event) |
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263 | { |
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264 | return ev_want_event [event] || cb; |
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265 | } |
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266 | |
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267 | bool invoke (event_type event, ...); |
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268 | |
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269 | MTH void instantiate (); |
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270 | void reattach (); |
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271 | |
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272 | protected: |
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273 | // do the real refcount checking work |
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274 | void do_check (); |
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275 | |
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276 | // the method that does the real destroy work |
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277 | virtual void do_destroy (); |
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278 | |
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279 | // destructor is protected, should not be called by anybody |
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280 | virtual ~attachable (); |
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281 | }; |
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282 | |
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283 | // the global object is a pseudo object that cares for the global events |
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284 | struct global : attachable |
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285 | { |
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286 | void gather_callbacks (AV *&callbacks, event_type event) const; |
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287 | }; |
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288 | |
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289 | extern struct global gbl_ev; |
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290 | |
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291 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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292 | |
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293 | #include "freezethaw.h" |
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294 | |
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295 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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296 | |
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297 | struct coroapi { |
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298 | static struct CoroAPI *GCoroAPI; |
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299 | |
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300 | static EV_ATOMIC_T cede_pending; |
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301 | |
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302 | static int nready () { return CORO_NREADY; } |
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303 | static int cede () { cede_pending = 0; return CORO_CEDE ; } |
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304 | |
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305 | static void do_cede_to_tick (); |
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306 | |
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307 | // actually cede's far more often |
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308 | static bool cede_to_tick () |
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309 | { |
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310 | if (expect_true (!cede_pending)) |
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311 | return false; |
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312 | |
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313 | do_cede_to_tick (); |
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314 | return true; |
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315 | } |
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316 | |
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317 | static void wait_for_tick (); |
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318 | static void wait_for_tick_begin (); |
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319 | }; |
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320 | |
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321 | struct evapi |
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322 | { |
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323 | static struct EVAPI *GEVAPI; |
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324 | }; |
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325 | |
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326 | struct iow : ev_io, evapi, callback<void (iow &, int)> |
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327 | { |
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328 | static void thunk (EV_P_ struct ev_io *w_, int revents) |
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329 | { |
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330 | iow &w = *static_cast<iow *>(w_); |
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331 | |
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332 | w (w, revents); |
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333 | } |
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334 | |
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335 | template<class O, class M> |
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336 | iow (O object, M method) |
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337 | : callback<void (iow &, int)> (object, method) |
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338 | { |
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339 | ev_init ((ev_io *)this, thunk); |
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340 | } |
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341 | |
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342 | void prio (int prio) |
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343 | { |
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344 | ev_set_priority ((ev_io *)this, prio); |
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345 | } |
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346 | |
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347 | void set (int fd, int events) |
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348 | { |
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349 | ev_io_set ((ev_io *)this, fd, events); |
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350 | } |
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351 | |
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352 | int poll () const { return events; } |
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353 | |
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354 | void poll (int events); |
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355 | |
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356 | void start () |
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357 | { |
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358 | ev_io_start (EV_DEFAULT, (ev_io *)this); |
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359 | } |
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360 | |
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361 | void stop () |
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362 | { |
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363 | ev_io_stop (EV_DEFAULT, (ev_io *)this); |
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364 | } |
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365 | |
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366 | ~iow () |
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367 | { |
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368 | stop (); |
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369 | } |
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370 | }; |
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371 | |
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372 | struct asyncw : ev_async, evapi, callback<void (ev_async &, int)> |
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373 | { |
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374 | static void thunk (EV_P_ struct ev_async *w_, int revents) |
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375 | { |
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376 | asyncw &w = *static_cast<asyncw *>(w_); |
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377 | |
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378 | w (w, revents); |
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379 | } |
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380 | |
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381 | template<class O, class M> |
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382 | asyncw (O object, M method) |
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383 | : callback<void (asyncw &, int)> (object, method) |
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384 | { |
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385 | ev_init ((ev_async *)this, thunk); |
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386 | } |
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387 | |
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388 | void start () |
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389 | { |
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390 | ev_async_start (EV_DEFAULT, (ev_async *)this); |
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391 | } |
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392 | |
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393 | void stop () |
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394 | { |
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395 | ev_async_stop (EV_DEFAULT, (ev_async *)this); |
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396 | } |
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397 | |
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398 | ~asyncw () |
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399 | { |
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400 | stop (); |
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401 | } |
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402 | }; |
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403 | |
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404 | #endif |
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405 | |
