| 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_CORO 0 |
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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_PRIO 3 /* hardcoded in Coro::Event */ |
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15 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
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16 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
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17 | #define CD_MAX 5 |
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18 | |
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19 | static void |
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20 | coro_std_cb (pe_event *pe) |
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21 | { |
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22 | AV *priv = (AV *)pe->ext_data; |
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23 | IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
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24 | SV **cd_coro; |
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25 | |
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26 | SvIV_set (AvARRAY (priv)[CD_PRIO], pe->prio); |
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27 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
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28 | |
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29 | if (type == 1) |
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30 | SvIV_set (AvARRAY (priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
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31 | |
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32 | GEventAPI->stop (pe->up, 0); |
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33 | |
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34 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
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35 | |
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36 | cd_coro = &AvARRAY(priv)[CD_CORO]; |
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37 | if (*cd_coro != &PL_sv_undef) |
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38 | { |
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39 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
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40 | CORO_READY (*cd_coro); |
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41 | SvREFCNT_dec (*cd_coro); |
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42 | *cd_coro = &PL_sv_undef; |
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43 | } |
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44 | } |
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45 | |
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46 | static void |
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47 | asynccheck_hook (void *data) |
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48 | { |
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49 | /* ceding from C means allocating a stack, but we assume this is a rare case */ |
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50 | while (CORO_NREADY) |
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51 | CORO_CEDE; |
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52 | } |
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53 | |
| 8 | MODULE = Coro::Event PACKAGE = Coro::Event |
54 | MODULE = Coro::Event PACKAGE = Coro::Event |
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55 | |
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56 | PROTOTYPES: ENABLE |
| 9 | |
57 | |
| 10 | BOOT: |
58 | BOOT: |
| 11 | { |
59 | { |
| 12 | I_EVENT_API("Coro::Event"); |
60 | I_EVENT_API ("Coro::Event"); |
| 13 | I_CORO_API ("Coro::Event"); |
61 | I_CORO_API ("Coro::Event"); |
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62 | |
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63 | GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
| 14 | } |
64 | } |
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65 | |
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66 | void |
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67 | _install_std_cb (SV *self, int type) |
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68 | CODE: |
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69 | { |
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70 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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71 | |
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72 | if (w->callback) |
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73 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
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74 | |
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75 | { |
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76 | AV *priv = newAV (); |
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77 | SV *rv = newRV_noinc ((SV *)priv); |
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78 | |
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79 | av_extend (priv, CD_MAX); |
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80 | AvARRAY (priv)[CD_CORO] = &PL_sv_undef; |
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81 | AvARRAY (priv)[CD_TYPE] = newSViv (type); |
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82 | AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
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83 | AvARRAY (priv)[CD_PRIO] = newSViv (0); |
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84 | AvARRAY (priv)[CD_HITS] = newSViv (0); |
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85 | AvARRAY (priv)[CD_GOT ] = newSViv (0); |
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86 | SvREADONLY_on (priv); |
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87 | |
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88 | w->callback = coro_std_cb; |
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89 | w->ext_data = priv; |
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90 | |
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91 | /* make sure Event does not use PERL_MAGIC_uvar, which */ |
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92 | /* we abuse for non-uvar purposes. */ |
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93 | sv_magicext (SvRV (self), rv, PERL_MAGIC_uvar, 0, 0, 0); |
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94 | } |
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95 | } |
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96 | |
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97 | void |
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98 | _next (SV *self) |
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99 | CODE: |
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100 | { |
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101 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
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102 | AV *priv = (AV *)w->ext_data; |
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103 | |
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104 | if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
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105 | { |
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106 | AvARRAY (priv)[CD_OK] = &PL_sv_no; |
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107 | XSRETURN_NO; /* got an event */ |
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108 | } |
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109 | |
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110 | if (!w->running) |
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111 | GEventAPI->start (w, 1); |
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112 | |
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113 | if (AvARRAY (priv)[CD_CORO] == &PL_sv_undef) |
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114 | AvARRAY (priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
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115 | else if (AvARRAY (priv)[CD_CORO] != CORO_CURRENT) |
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116 | croak ("Coro::Event::next can only be called from a single coroutine at a time, caught"); |
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117 | |
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118 | XSRETURN_YES; /* schedule */ |
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119 | } |
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120 | |
