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2 | // cfperl.h perl interface |
2 | // cfperl.h perl interface |
3 | // |
3 | // |
4 | #ifndef CFPERL_H__ |
4 | #ifndef CFPERL_H__ |
5 | #define CFPERL_H__ |
5 | #define CFPERL_H__ |
6 | |
6 | |
7 | struct pl; |
7 | #include <cstdio> |
8 | struct object; |
8 | |
9 | struct mapstruct; |
9 | using namespace std; |
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10 | |
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11 | #include <EXTERN.h> |
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12 | #include <perl.h> |
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13 | #include <XSUB.h> |
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14 | |
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15 | #include <EventAPI.h> |
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16 | #include <CoroAPI.h> |
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17 | |
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18 | #include "util.h" |
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19 | #include "keyword.h" |
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20 | #include "dynbuf.h" |
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21 | #include "callback.h" |
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22 | |
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23 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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24 | |
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25 | // optimisations/workaround for functions requiring my_perl in scope (anti-bloat) |
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26 | #undef localtime |
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27 | #undef srand48 |
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28 | #undef drand48 |
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29 | #undef srandom |
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30 | #undef readdir |
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31 | #undef getprotobyname |
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32 | #undef gethostbyname |
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33 | #undef ctime |
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34 | #undef strerror |
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35 | |
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36 | // same here, massive symbol spamming |
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37 | #undef do_open |
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38 | #undef do_close |
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39 | #undef ref |
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40 | #undef seed |
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41 | |
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42 | // perl bug #40256: perl does overwrite those with reentrant versions |
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43 | // but does not initialise their state structures. |
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44 | #undef random |
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45 | #undef crypt |
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46 | |
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47 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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48 | |
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49 | // some macros to simplify perl in-calls |
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50 | |
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51 | #define CHECK_ERROR \ |
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52 | if (SvTRUE (ERRSV)) \ |
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53 | LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV)); |
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54 | |
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55 | #define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args) |
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56 | #define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc |
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57 | #define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr))) |
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58 | #define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) | G_EVAL); SPAGAIN; |
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59 | #define CALL_END CHECK_ERROR; FREETMPS; LEAVE |
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60 | |
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61 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
10 | |
62 | |
11 | void cfperl_init (); |
63 | void cfperl_init (); |
12 | void cfperl_main (); |
64 | void cfperl_main (); |
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65 | void cfperl_emergency_save (); |
13 | |
66 | |
14 | // could have used templates, but a more traditional C api |
67 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
15 | // uses more explicit typing which is ok for this purpose. |
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16 | enum data_type |
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17 | { |
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18 | DT_END, // no further arguments |
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19 | DT_AV, // perl-only av that needs to be flattened out |
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20 | DT_INT, |
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21 | DT_INT64, |
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22 | DT_DOUBLE, |
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23 | DT_STRING, // 0-terminated string |
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24 | DT_DATA, // string + length |
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25 | DT_OBJECT, |
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26 | DT_MAP, |
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27 | DT_PLAYER, |
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28 | DT_ARCH, |
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29 | DT_PARTY, |
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30 | DT_REGION, |
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31 | |
68 | |
32 | NUM_DATA_TYPES |
69 | // virtual server time, excluding time jumps and lag |
33 | }; |
70 | extern double runtime; |
34 | |
71 | |
35 | enum event_klass |
72 | enum event_klass |
36 | { |
73 | { |
37 | KLASS_NONE, |
74 | KLASS_NONE, |
38 | KLASS_GLOBAL, |
75 | KLASS_GLOBAL, |
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76 | KLASS_ATTACHABLE, |
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77 | KLASS_CLIENT, |
39 | KLASS_PLAYER, |
78 | KLASS_PLAYER, |
40 | KLASS_OBJECT, |
79 | KLASS_OBJECT, |
41 | KLASS_MAP, |
80 | KLASS_MAP, |
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81 | KLASS_COMMAND, |
42 | }; |
82 | }; |
43 | |
83 | |
44 | enum event_type |
84 | enum event_type |
45 | { |
85 | { |
46 | # define def(klass,name) EVENT_ ## klass ## _ ## name, |
86 | # define def(klass,name) EVENT_ ## klass ## _ ## name, |
47 | # include "eventinc.h" |
87 | # include "eventinc.h" |
48 | # undef def |
88 | # undef def |
49 | NUM_EVENT_TYPES |
89 | NUM_EVENT_TYPES |
50 | }; |
90 | }; |
51 | |
91 | |
52 | #define ARG_AV(o) DT_AV , static_cast<AV *> (o) |
92 | #define ARG_AV(o) DT_AV , static_cast<AV *> (o) |
53 | #define ARG_INT(v) DT_INT , static_cast<int> (v) |
93 | #define ARG_INT(v) DT_INT , static_cast<int> (v) |
54 | #define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) |
94 | #define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) |
55 | #define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) |
95 | #define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) |
56 | #define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) |
96 | #define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) |
57 | #define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), (l) |
97 | #define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l) |
58 | #define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<struct object *> (o) |
98 | #define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o)) |
59 | #define ARG_MAP(o) DT_MAP , (void *)static_cast<struct mapstruct *> (o) |
99 | #define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o)) |
60 | #define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<struct pl *> (o) |
100 | #define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o)) |
61 | #define ARG_ARCH(o) DT_ARCH , (void *)static_cast<struct archetype *> (o) |
101 | #define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o)) |
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102 | #define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o)) |
62 | #define ARG_PARTY(o) DT_PARTY , (void *)static_cast<struct party *> (o) |
103 | #define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o)) |
63 | #define ARG_REGION(o) DT_REGION, (void *)static_cast<struct region *> (o) |
104 | #define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o)) |
64 | |
105 | |
65 | // the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension |
106 | // the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension |
66 | |
107 | |
67 | // all these return true when the normal event processing should be skipped (if any) |
108 | // all these return true when the normal event processing should be skipped (if any) |
68 | #define INVOKE_(event, ...) cfperl_invoke (event, ## __VA_ARGS__, DT_END) |
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69 | |
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70 | #define INVOKE(klass, event, ...) INVOKE_(EVENT_ ## klass ## _ ## event, ## __VA_ARGS__) |
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71 | #define INVOKE_GLOBAL(event, ...) INVOKE_(EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__) |
109 | #define INVOKE_GLOBAL(event, ...) gbl_ev.invoke (EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__, DT_END) |
72 | #define INVOKE_OBJECT(event, op, ...) INVOKE_(EVENT_ ## OBJECT ## _ ## event, ARG_OBJECT (op), ## __VA_ARGS__) |
110 | #define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END) |
73 | #define INVOKE_PLAYER(event, pl, ...) INVOKE_(EVENT_ ## PLAYER ## _ ## event, ARG_PLAYER (pl), ## __VA_ARGS__) |
111 | #define INVOKE_OBJECT(event, obj, ...) (obj)->invoke (EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__, DT_END) |
74 | #define INVOKE_MAP(event, map, ...) INVOKE_(EVENT_ ## MAP ## _ ## event, ARG_MAP (map) , ## __VA_ARGS__) |
112 | #define INVOKE_CLIENT(event, obj, ...) (obj)->invoke (EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__, DT_END) |
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113 | #define INVOKE_PLAYER(event, obj, ...) (obj)->invoke (EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__, DT_END) |
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114 | #define INVOKE_MAP(event, obj, ...) (obj)->invoke (EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__, DT_END) |
75 | |
115 | |
76 | //TODO should index into @result |
116 | //TODO should index into @result |
77 | #define RESULT(idx,type) cfperl_result_ ## type (idx) |
117 | #define RESULT(idx,type) cfperl_result_ ## type (idx) |
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118 | #define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE) |
78 | #define RESULT_INT(idx) RESULT(idx, INT) |
119 | #define RESULT_INT(idx) RESULT(idx, INT) |
79 | |
120 | |
80 | bool cfperl_invoke (event_type event, ...); |
121 | double cfperl_result_DOUBLE (int idx); |
81 | int cfperl_result_INT (int idx); |
122 | int cfperl_result_INT (int idx); |
82 | |
123 | |
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124 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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125 | |
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126 | INTERFACE_CLASS (attachable) |
83 | struct attachable_base |
127 | struct attachable |
84 | { |
128 | { |
85 | void *self, *cb; // CF+ perl self and callback |
129 | static MGVTBL vtbl; |
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130 | |
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131 | static unordered_vector<attachable *> mortals; |
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132 | MTH static void check_mortals (); |
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133 | |
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134 | enum { |
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135 | F_DESTROYED = 0x01, |
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136 | }; |
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137 | |
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138 | // object is delete'd after the refcount reaches 0 |
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139 | mutable int ACC (RW, refcnt); |
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140 | int ACC (RW, flags); |
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141 | |
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142 | MTH void refcnt_inc () const { ++refcnt; } |
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143 | MTH void refcnt_dec () const { --refcnt; } |
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144 | |
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145 | MTH int refcnt_cnt () const; |
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146 | // check wether the object has died and destroy |
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147 | MTH void refcnt_chk () { if (refcnt <= 0) do_check (); } |
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148 | |
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149 | // destroy the object unless it was already destroyed |
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150 | // this politely asks everybody interested the reduce |
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151 | // the refcount to 0 as soon as possible. |
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152 | MTH void destroy (); |
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153 | |
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154 | // return wether an object was destroyed already |
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155 | MTH bool destroyed () const { return flags & F_DESTROYED; } |
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156 | |
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157 | virtual void gather_callbacks (AV *&callbacks, event_type event) const; |
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158 | |
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159 | #if 0 |
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160 | private: |
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161 | static refcounted *rc_first; |
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162 | refcounted *rc_next; |
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163 | #endif |
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164 | |
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165 | HV *self; // CF+ perl self |
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166 | AV *cb; // CF+ callbacks |
86 | const char *attach; // generic extension attachment information |
167 | shstr attach; // generic extension attachment information |
87 | |
168 | |
88 | void clear (); // called when free'ing objects |
169 | void sever_self (); // sever this object from its self, if it has one. |
89 | void optimise (); // possibly save some memory by destroying unneeded data |
170 | void optimise (); // possibly save some memory by destroying unneeded data |
90 | |
171 | |
91 | void attachable_init () |
172 | attachable () |
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173 | : flags (0), refcnt (0), self (0), cb (0), attach (0) |
92 | { |
174 | { |
93 | self = cb = 0; |
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94 | attach = 0; |
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95 | } |
175 | } |
96 | }; |
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97 | |
176 | |
98 | // objects attachable from perl (or any other extension) should include or |
177 | attachable (const attachable &src) |
99 | // derive using the curiously recurring template pattern, to avoid |
178 | : flags (0), refcnt (0), self (0), cb (0), attach (src.attach) |
100 | // virtual method calls etc. |
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101 | template<class subclass> |
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102 | struct attachable : attachable_base |
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103 | { |
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104 | static data_type get_dt () |
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105 | { |
179 | { |
106 | subclass::get_dt (); |
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107 | } |
180 | } |
108 | }; |
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109 | |
181 | |
110 | struct object_freezethaw |
182 | virtual ~attachable (); |
111 | { |
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112 | void *av; |
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113 | FILE *fp; |
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114 | |
183 | |
115 | operator FILE *() { return fp; } |
184 | attachable &operator =(const attachable &src); |
116 | }; |
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117 | |
185 | |
118 | struct object_freezer : object_freezethaw |
186 | bool invoke (event_type event, ...); |
119 | { |
187 | MTH void instantiate (); |
120 | void *filename; |
188 | void reattach (); |
121 | |
189 | |
122 | object_freezer (const char *filename); |
190 | protected: |
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191 | // do the real refcount checking work |
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192 | void do_check (); |
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193 | |
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194 | // the method that does the real destroy work |
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195 | virtual void do_destroy (); |
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196 | }; |
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197 | |
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198 | // the global object is a pseudo object that cares for the global events |
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199 | struct global : attachable |
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200 | { |
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201 | void gather_callbacks (AV *&callbacks, event_type event) const; |
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202 | }; |
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203 | |
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204 | extern struct global gbl_ev; |
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205 | |
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206 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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207 | |
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208 | struct object_freezer : dynbuf |
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209 | { |
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210 | AV *av; |
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211 | |
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212 | object_freezer (); |
123 | ~object_freezer (); |
213 | ~object_freezer (); |
124 | |
214 | |
125 | void put (attachable_base *ext); |
215 | void put (attachable *ext); |
126 | |
216 | |
127 | template<class subclass> |
217 | // used only for user-defined key-value pairs |
128 | void put (attachable<subclass> *obj) |
218 | void put (const shstr &k, const shstr &v) |
129 | { |
219 | { |
130 | put ((attachable_base *)obj); |
220 | add (k); |
131 | } |
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132 | }; |
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133 | |
221 | |
134 | struct object_thawer : object_freezethaw |
222 | if (v) |
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223 | add (' '), add (v); |
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224 | |
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225 | add ('\n'); |
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226 | } |
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227 | |
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228 | //TODO//temporary, used only for saving body locations |
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229 | void put (const char *k, int v) |
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230 | { |
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231 | add (k); |
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232 | add (' '); |
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233 | add (sint32 (v)); |
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234 | add ('\n'); |
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235 | } |
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236 | |
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237 | template<typename T> |
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238 | void put_string (keyword k, const T &v) |
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239 | { |
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240 | int klen = keyword_len [k]; |
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241 | int vlen = v ? strlen (v) + 1 : 0; |
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242 | |
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243 | char *p = (char *)alloc (klen + vlen + 1); |
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244 | |
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245 | memcpy (p, keyword_str [k], klen); p += klen; |
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246 | |
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247 | if (v) |
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248 | { |
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249 | *p++ = ' '; vlen--; |
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250 | memcpy (p, v, vlen); p += vlen; |
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251 | } |
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252 | |
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253 | *p = '\n'; |
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254 | } |
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255 | |
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256 | void put (keyword k, const char *v = 0) |
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257 | { |
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258 | put_string (k, v); |
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259 | } |
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260 | |
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261 | void put (keyword k, const shstr &v) |
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262 | { |
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263 | put_string (k, v); |
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264 | } |
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265 | |
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266 | void put (keyword k, double v) |
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267 | { |
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268 | char buf [128]; |
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269 | |
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270 | snprintf (buf, 128, "%.7g", v); |
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271 | |
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272 | put (k, (const char *)buf); |
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273 | } |
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274 | |
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275 | void put_(keyword k, sint64 v) |
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276 | { |
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277 | add (keyword_str [k], keyword_len [k]); |
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278 | add (' '); |
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279 | add (v); |
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280 | add ('\n'); |
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281 | } |
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282 | |
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283 | void put_(keyword k, sint32 v) |
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284 | { |
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285 | add (keyword_str [k], keyword_len [k]); |
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286 | add (' '); |
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287 | add (v); |
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288 | add ('\n'); |
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289 | } |
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290 | |
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291 | void put (keyword kbeg, keyword kend, const shstr &v) |
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292 | { |
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293 | add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n'); |
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294 | |
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295 | if (v) |
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296 | { |
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297 | add (v); |
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298 | add ('\n'); |
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299 | } |
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300 | |
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301 | add (keyword_str [kend], keyword_len [kend]); add ('\n'); |
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302 | } |
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303 | |
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304 | void put (keyword k, float v) { put (k, (double)v); } |
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305 | void put (keyword k, signed char v) { put_(k, (sint32)v); } |
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306 | void put (keyword k, unsigned char v) { put_(k, (sint32)v); } |
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307 | void put (keyword k, signed short v) { put_(k, (sint32)v); } |
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308 | void put (keyword k, unsigned short v) { put_(k, (sint32)v); } |
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309 | void put (keyword k, signed int v) { put_(k, (sint32)v); } |
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310 | void put (keyword k, unsigned int v) { put_(k, (sint64)v); } |
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311 | void put (keyword k, signed long v) { put_(k, (sint64)v); } |
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312 | void put (keyword k, unsigned long v) { put_(k, (sint64)v); } |
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313 | void put (keyword k, signed long long v) { put_(k, (sint64)v); } |
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314 | void put (keyword k, unsigned long long v) { put_(k, (sint64)v); } |
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315 | |
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316 | template<typename T> |
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317 | void put (keyword k, const T *v) |
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318 | { |
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319 | if (v) |
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320 | put (k, v->name); |
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321 | else |
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322 | put (k, (const char *)0); |
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323 | } |
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324 | |
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325 | template<typename T> |
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326 | void put (keyword k, const refptr<T> &v) |
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327 | { |
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328 | put (k, (T *)v); |
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329 | } |
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330 | |
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331 | bool save (const char *path); |
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332 | char *as_string (); // like strdup |
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333 | |
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334 | operator bool () { return !!av; } |
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335 | }; |
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336 | |
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337 | // compatibility support, should be removed when no longer needed |
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338 | int fprintf (object_freezer &freezer, const char *format, ...); |
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339 | int fputs (const char *s, object_freezer &freezer); |
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340 | |
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341 | struct object_thawer |
135 | { |
342 | { |
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343 | SV *text; // text part |
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344 | AV *av; // perl part |
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345 | int linenum; |
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346 | char *line; // current beginning of line |
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347 | char *last_keyword, *last_value; |
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348 | const char *name; |
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349 | |
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350 | operator bool () { return !!text; } |
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351 | |
136 | object_thawer (FILE *fp, const char *filename = 0); |
352 | object_thawer (const char *path = 0); |
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353 | object_thawer (const char *data, AV *perlav); |
137 | ~object_thawer (); |
354 | ~object_thawer (); |
138 | |
355 | |
139 | void get (data_type type, void *obj, attachable_base *ext, int oid); |
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140 | |
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141 | template<class subclass> |
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142 | void get (attachable<subclass> *obj, int oid) |
356 | void get (attachable *obj, int oid); |
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357 | |
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358 | keyword get_kv (); // also parse value for later use |
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359 | void skip_kv (keyword kw); |
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360 | |
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361 | const char *get_str () { return last_value; } // may be 0 |
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362 | |
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363 | void get (shstr &sh) const; |
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364 | void get_ornull (shstr &sh) const { sh = last_value; } |
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365 | void get_ml (keyword kend, shstr &sh); |
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366 | |
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367 | sint32 get_sint32 () const; |
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368 | sint64 get_sint64 () const; |
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369 | double get_double () const; |
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370 | |
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371 | void get (float &v) { v = get_double (); } |
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372 | void get (double &v) { v = get_double (); } |
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373 | |
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374 | void get (bool &i) { i = get_sint32 (); } |
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375 | void get (sint8 &i) { i = get_sint32 (); } |
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376 | void get (uint8 &i) { i = get_sint32 (); } |
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377 | void get (sint16 &i) { i = get_sint32 (); } |
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378 | void get (uint16 &i) { i = get_sint32 (); } |
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379 | void get (sint32 &i) { i = get_sint32 (); } |
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380 | |
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381 | void get (uint32 &i) { i = get_sint64 (); } |
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382 | void get (sint64 &i) { i = get_sint64 (); } |
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383 | |
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384 | bool parse_error (keyword kw, const char *type = 0, const char *name = 0, bool skip = true); |
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385 | }; |
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386 | |
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387 | //TODO: remove |
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388 | char *fgets (char *s, int n, object_thawer &thawer); |
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389 | |
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390 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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391 | |
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392 | struct coroapi { |
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393 | static struct CoroAPI *GCoroAPI; |
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394 | |
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395 | static int nready () { return CORO_NREADY; } |
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396 | static int cede () { return CORO_CEDE ; } |
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397 | |
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398 | static int cede_counter; |
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399 | |
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400 | static void cede_every (int count) |
143 | { |
401 | { |
144 | if (av) |
402 | if (++cede_counter >= count) |
145 | get (subclass::get_dt (), (subclass *)obj, obj, oid); |
403 | { |
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404 | cede_counter = 0; |
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405 | |
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406 | if (coroapi::nready ()) |
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407 | coroapi::cede (); |
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408 | } |
146 | } |
409 | } |
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410 | }; |
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411 | |
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412 | struct watcher_base |
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413 | { |
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414 | static struct EventAPI *GEventAPI; |
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415 | }; |
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416 | |
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417 | template<class base> |
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418 | struct watcher : watcher_base |
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419 | { |
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420 | base *pe; |
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421 | |
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422 | void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); } |
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423 | void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); } |
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424 | void now () { GEventAPI->now ((pe_watcher *)pe); } |
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425 | void suspend () { GEventAPI->suspend ((pe_watcher *)pe); } |
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426 | void resume () { GEventAPI->resume ((pe_watcher *)pe); } |
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427 | |
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428 | void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; } |
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429 | |
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430 | ~watcher () |
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431 | { |
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432 | cancel (); |
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433 | } |
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434 | |
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435 | private: |
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436 | void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private |
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437 | }; |
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438 | |
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439 | struct iw : watcher<pe_idle>, callback<void (iw &)> |
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440 | { |
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441 | template<class O, class M> |
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442 | iw (O object, M method) |
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443 | : callback<void (iw &)> (object, method) |
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444 | { |
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445 | alloc (); |
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446 | } |
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447 | |
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448 | private: |
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449 | void alloc (); |
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450 | }; |
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451 | |
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452 | struct iow : watcher<pe_io>, callback<void (iow &, int)> |
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453 | { |
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454 | template<class O, class M> |
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455 | iow (O object, M method) |
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456 | : callback<void (iow &, int)> (object, method) |
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457 | { |
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458 | alloc (); |
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459 | } |
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460 | |
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461 | void fd (int fd); |
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462 | int poll (); |
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463 | void poll (int events); |
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464 | |
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465 | private: |
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466 | void alloc (); |
147 | }; |
467 | }; |
148 | |
468 | |
149 | #endif |
469 | #endif |
150 | |
470 | |