| 1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
| 2 | #include "perl.h" |
2 | #include "perl.h" |
| 3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
| 4 | |
4 | |
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5 | #include <assert.h> |
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6 | #include <string.h> |
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7 | |
| 5 | #include "EventAPI.h" |
8 | #include "EventAPI.h" |
| 6 | #include "../Coro/CoroAPI.h" |
9 | #include "../Coro/CoroAPI.h" |
| 7 | |
10 | |
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11 | #define CD_WAIT 0 /* wait queue */ |
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12 | #define CD_TYPE 1 |
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13 | #define CD_OK 2 |
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14 | #define CD_HITS 3 /* hardcoded in Coro::Event */ |
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15 | #define CD_GOT 4 /* hardcoded in Coro::Event, Coro::Handle */ |
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16 | #define CD_MAX 4 |
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17 | |
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18 | static HV *coro_event_event_stash; |
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19 | |
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20 | static int |
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21 | coro_ev_free (pTHX_ SV *sv, MAGIC *mg) |
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22 | { |
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23 | *(void **)mg->mg_ptr = 0; |
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24 | |
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25 | return 0; |
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26 | } |
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27 | |
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28 | #define PERL_MAGIC_coro_event 0x18 /* to avoid clashes with e.g. event */ |
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29 | |
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30 | static MGVTBL vtbl_coro_event = {0, 0, 0, 0, coro_ev_free}; |
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31 | |
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32 | static void |
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33 | coro_std_cb (pe_event *pe) |
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34 | { |
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35 | if (pe->up->ext_data) |
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36 | { |
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37 | AV *priv = (AV *)pe->ext_data; |
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38 | IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
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39 | AV *cd_wait; |
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40 | SV *coro; |
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41 | |
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42 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
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43 | SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0); |
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44 | |
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45 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
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46 | |
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47 | cd_wait = (AV *)AvARRAY(priv)[CD_WAIT]; |
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48 | |
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49 | coro = av_shift (cd_wait); |
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50 | if (coro != &PL_sv_undef) |
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51 | { |
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52 | CORO_READY (coro); |
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53 | SvREFCNT_dec (coro); |
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54 | } |
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55 | |
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56 | if (av_len (cd_wait) < 0) |
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57 | GEventAPI->stop (pe->up, 0); |
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58 | } |
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59 | } |
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60 | |
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61 | static void |
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62 | asynccheck_hook (void *data) |
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63 | { |
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64 | /* this loops as long as we have _other_ coros with the same or higher priority */ |
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65 | while (CORO_NREADY && CORO_CEDE) |
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66 | ; |
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67 | } |
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68 | |
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69 | static double |
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70 | prepare_hook (void *data) |
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71 | { |
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72 | /* this yields once to another coro with any priority */ |
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73 | if (CORO_NREADY) |
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74 | { |
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75 | CORO_CEDE_NOTSELF; |
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76 | /* |
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77 | * timers might have changed, and Event fails to notice this |
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78 | * so we have to assume the worst. If Event didn't have that bug, |
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79 | * we would only need to do this if CORO_NREADY is != 0 now. |
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80 | */ |
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81 | return 0.; |
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82 | } |
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83 | else |
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84 | return 85197.73; /* this is as good as any value, but it factors badly with common values */ |
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85 | } |
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86 | |
| 8 | MODULE = Coro::Event PACKAGE = Coro::Event |
87 | MODULE = Coro::Event PACKAGE = Coro::Event |
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88 | |
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89 | PROTOTYPES: ENABLE |
| 9 | |
90 | |
| 10 | BOOT: |
91 | BOOT: |
| 11 | { |
92 | { |
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93 | coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE); |
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94 | |
| 12 | I_EVENT_API("Coro::Event"); |
95 | I_EVENT_API ("Coro::Event"); |
| 13 | I_CORO_API ("Coro::Event"); |
96 | I_CORO_API ("Coro::Event"); |
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97 | |
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98 | GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
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99 | GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); |
| 14 | } |
100 | } |
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101 | |
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102 | void |
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103 | _install_std_cb (SV *self, int type) |
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104 | CODE: |
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105 | { |
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106 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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107 | |
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108 | if (w->callback) |
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109 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
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110 | |
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111 | { |
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112 | AV *priv = newAV (); |
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113 | |
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114 | av_fill (priv, CD_MAX); |
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115 | AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */ |
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116 | AvARRAY (priv)[CD_TYPE] = newSViv (type); |
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117 | AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
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118 | AvARRAY (priv)[CD_HITS] = newSViv (0); |
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119 | AvARRAY (priv)[CD_GOT ] = newSViv (0); |
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120 | SvREADONLY_on (priv); |
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121 | |
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122 | w->callback = coro_std_cb; |
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123 | w->ext_data = priv; |
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124 | |
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125 | sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_coro_event, &vtbl_coro_event, &w->ext_data, 0); |
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126 | } |
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127 | } |
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128 | |
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129 | void |
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130 | _next (SV *self) |
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131 | CODE: |
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132 | { |
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133 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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134 | AV *priv = (AV *)w->ext_data; |
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135 | |
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136 | if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
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137 | { |
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138 | AvARRAY (priv)[CD_OK] = &PL_sv_no; |
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139 | XSRETURN_NO; /* got an event */ |
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140 | } |
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141 | |
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142 | av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT)); |
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143 | |
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144 | if (!w->running) |
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145 | GEventAPI->start (w, 1); |
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146 | |
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147 | XSRETURN_YES; /* schedule */ |
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148 | } |
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149 | |
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150 | SV * |
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151 | _event (SV *self) |
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152 | CODE: |
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153 | { |
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154 | if (GIMME_V == G_VOID) |
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155 | XSRETURN_EMPTY; |
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156 | |
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157 | { |
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158 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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159 | AV *priv = (AV *)w->ext_data; |
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160 | |
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161 | RETVAL = newRV_inc ((SV *)priv); |
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162 | |
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163 | /* may need to bless it now */ |
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164 | if (!SvOBJECT (priv)) |
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165 | { |
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166 | SvREADONLY_off ((SV *)priv); |
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167 | sv_bless (RETVAL, coro_event_event_stash); |
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168 | SvREADONLY_on ((SV *)priv); |
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169 | } |
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170 | } |
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171 | } |
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172 | OUTPUT: |
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173 | RETVAL |
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174 | |
