| 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 <string.h> |
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6 | |
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7 | /* this useful idiom is unfortunately missing... */ |
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8 | static void |
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9 | confess (const char *msg) |
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10 | { |
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11 | dSP; |
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12 | |
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13 | PUSHMARK(SP); |
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14 | XPUSHs (sv_2mortal(newSVpv("only one coroutine can wait for an event at any given time",0))); |
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15 | PUTBACK; |
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16 | call_pv ("Carp::confess", G_VOID); |
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17 | } |
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18 | |
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19 | #include "EventAPI.h" |
| 5 | #include "CoroAPI.h" |
20 | #include "../Coro/CoroAPI.h" |
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21 | |
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22 | #ifndef PE_PERLCB |
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23 | # define PE_PERLCB 0x020 /* not public, but we need it :( */ |
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24 | #endif |
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25 | |
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26 | #define CD_CORO 0 |
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27 | #define CD_TYPE 1 |
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28 | #define CD_OK 2 |
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29 | #define CD_PRIO 3 /* hardcoded in Coro::Event */ |
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30 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
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31 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
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32 | #define CD_MAX 5 |
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33 | |
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34 | #define EV_CLASS "Coro::Event" |
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35 | |
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36 | static pe_idle *scheduler; |
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37 | static int do_schedule; |
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38 | |
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39 | #define NEED_SCHEDULE if (!do_schedule) \ |
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40 | { \ |
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41 | do_schedule = 1; \ |
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42 | GEventAPI->now ((pe_watcher *)scheduler); \ |
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43 | } |
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44 | |
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45 | static void |
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46 | coro_std_cb(pe_event *pe) |
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47 | { |
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48 | AV *priv = (AV *)pe->ext_data; |
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49 | IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); |
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50 | SV **cd_coro = &AvARRAY(priv)[CD_CORO]; |
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51 | |
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52 | sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio); |
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53 | sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); |
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54 | |
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55 | if (type == 1) |
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56 | sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
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57 | |
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58 | if (*cd_coro != &PL_sv_undef) |
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59 | { |
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60 | CORO_READY (*cd_coro); |
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61 | SvREFCNT_dec (*cd_coro); |
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62 | *cd_coro = &PL_sv_undef; |
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63 | NEED_SCHEDULE; |
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64 | } |
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65 | else |
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66 | { |
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67 | AvARRAY(priv)[CD_OK] = &PL_sv_yes; |
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68 | GEventAPI->stop (pe->up, 0); |
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69 | } |
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70 | } |
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71 | |
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72 | static void |
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73 | scheduler_cb(pe_event *pe) |
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74 | { |
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75 | while (CORO_NREADY) |
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76 | CORO_CEDE; |
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77 | |
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78 | do_schedule = 0; |
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79 | } |
| 6 | |
80 | |
| 7 | MODULE = Coro::Event PACKAGE = Coro::Event |
81 | MODULE = Coro::Event PACKAGE = Coro::Event |
| 8 | |
82 | |
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83 | PROTOTYPES: ENABLE |
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84 | |
| 9 | BOOT: |
85 | BOOT: |
| 10 | { |
86 | { |
| 11 | I_EVENT_API("Coro::Event"); |
87 | I_EVENT_API ("Coro::Event"); |
| 12 | I_CORO_API ("Coro::Event"); |
88 | I_CORO_API ("Coro::Event"); |
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89 | |
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90 | /* create a fake idle handler (we only ever call now) */ |
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91 | scheduler = GEventAPI->new_idle (0, 0); |
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92 | scheduler->base.callback = scheduler_cb; |
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93 | scheduler->base.prio = PE_PRIO_NORMAL; /* StarvePrio */ |
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94 | scheduler->min_interval = newSVnv (0); |
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95 | scheduler->max_interval = newSVnv (0); |
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96 | GEventAPI->stop ((pe_watcher *)scheduler, 0); |
| 13 | } |
97 | } |
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98 | |
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99 | void |
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100 | _install_std_cb(self,type) |
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101 | SV * self |
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102 | int type |
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103 | CODE: |
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104 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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105 | |
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106 | if (WaFLAGS (w) & PE_PERLCB) |
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107 | croak ("Coro::Event watchers must not have a perl callback (see Coro::Event), caught"); |
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108 | { |
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109 | AV *priv = newAV (); |
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110 | SV *rv = newRV_noinc ((SV *)priv); |
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111 | |
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112 | av_extend (priv, CD_MAX); |
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113 | av_store (priv, CD_CORO, &PL_sv_undef); |
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114 | av_store (priv, CD_TYPE, newSViv (type)); |
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115 | av_store (priv, CD_OK , &PL_sv_no); |
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116 | av_store (priv, CD_PRIO, newSViv (0)); |
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117 | av_store (priv, CD_HITS, newSViv (0)); |
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118 | av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); |
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119 | SvREADONLY_on (priv); |
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120 | |
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121 | w->callback = coro_std_cb; |
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122 | w->ext_data = priv; |
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123 | |
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124 | hv_store ((HV *)SvRV (self), |
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125 | EV_CLASS, strlen (EV_CLASS), |
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126 | rv, 0); |
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127 | |
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128 | GEventAPI->start (w, 0); |
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129 | } |
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130 | |
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131 | void |
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132 | _next(self) |
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133 | SV * self |
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134 | CODE: |
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135 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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136 | AV *priv = (AV *)w->ext_data; |
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137 | |
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138 | if (!w->running) |
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139 | GEventAPI->start (w, 1); |
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140 | |
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141 | if (AvARRAY(priv)[CD_OK] == &PL_sv_yes) |
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142 | { |
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143 | AvARRAY(priv)[CD_OK] = &PL_sv_no; |
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144 | XSRETURN_NO; |
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145 | } |
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146 | else |
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147 | { |
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148 | if (AvARRAY(priv)[CD_CORO] != &PL_sv_undef) |
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149 | confess ("only one coroutine can wait for an event"); |
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150 | |
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151 | AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
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152 | XSRETURN_YES; |
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153 | } |
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154 | |
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155 | MODULE = Coro::Event PACKAGE = Coro |
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156 | |
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157 | # overwrite the ready function |
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158 | void |
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159 | ready(self) |
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160 | SV * self |
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161 | PROTOTYPE: $ |
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162 | CODE: |
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163 | NEED_SCHEDULE; |
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164 | CORO_READY (self); |
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165 | |
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166 | |
