… | |
… | |
116 | # define CORO_CLOCK_MONOTONIC 1 |
116 | # define CORO_CLOCK_MONOTONIC 1 |
117 | # define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
117 | # define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
118 | # endif |
118 | # endif |
119 | #endif |
119 | #endif |
120 | |
120 | |
|
|
121 | /* perl usually suppressed asserts. for debugging, we sometimes force it to be on */ |
|
|
122 | #if 0 |
|
|
123 | # undef NDEBUG |
|
|
124 | # include <assert.h> |
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|
125 | #endif |
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|
126 | |
121 | static double (*nvtime)(); /* so why doesn't it take void? */ |
127 | static double (*nvtime)(); /* so why doesn't it take void? */ |
122 | static void (*u2time)(pTHX_ UV ret[2]); |
128 | static void (*u2time)(pTHX_ UV ret[2]); |
123 | |
129 | |
124 | /* we hijack an hopefully unused CV flag for our purposes */ |
130 | /* we hijack an hopefully unused CV flag for our purposes */ |
125 | #define CVf_SLF 0x4000 |
131 | #define CVf_SLF 0x4000 |
… | |
… | |
1043 | } |
1049 | } |
1044 | |
1050 | |
1045 | return rss; |
1051 | return rss; |
1046 | } |
1052 | } |
1047 | |
1053 | |
1048 | /** coroutine stack handling ************************************************/ |
1054 | /** provide custom get/set/clear methods for %SIG elements ******************/ |
1049 | |
|
|
1050 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
1051 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
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|
1052 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
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|
1053 | |
1055 | |
1054 | /* apparently < 5.8.8 */ |
1056 | /* apparently < 5.8.8 */ |
1055 | #ifndef MgPV_nolen_const |
1057 | #ifndef MgPV_nolen_const |
1056 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
1058 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
1057 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
1059 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
1058 | (const char*)(mg)->mg_ptr) |
1060 | (const char*)(mg)->mg_ptr) |
1059 | #endif |
1061 | #endif |
|
|
1062 | |
|
|
1063 | /* this will be a patched copy of PL_vtbl_sigelem */ |
|
|
1064 | static MGVTBL coro_sigelem_vtbl; |
|
|
1065 | |
|
|
1066 | static int ecb_cold |
|
|
1067 | coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen) |
|
|
1068 | { |
|
|
1069 | sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen); |
|
|
1070 | assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem); |
|
|
1071 | mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl; |
|
|
1072 | return 1; |
|
|
1073 | } |
|
|
1074 | |
|
|
1075 | /* perl does not have a %SIG vtbl, we provide one so we can override */ |
|
|
1076 | /* the cwvtblagic for %SIG members */ |
|
|
1077 | static const MGVTBL coro_sig_vtbl = { |
|
|
1078 | 0, 0, 0, 0, 0, |
|
|
1079 | coro_sig_copy |
|
|
1080 | }; |
1060 | |
1081 | |
1061 | /* |
1082 | /* |
1062 | * This overrides the default magic get method of %SIG elements. |
1083 | * This overrides the default magic get method of %SIG elements. |
1063 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
1084 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
1064 | * and instead of trying to save and restore the hash elements (extremely slow), |
1085 | * and instead of trying to save and restore the hash elements (extremely slow), |
… | |
… | |
1090 | sv_setsv (sv, ssv); |
1111 | sv_setsv (sv, ssv); |
1091 | return 0; |
1112 | return 0; |
1092 | } |
1113 | } |
1093 | } |
1114 | } |
1094 | |
1115 | |
1095 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
1116 | return PL_vtbl_sigelem.svt_get ? PL_vtbl_sigelem.svt_get (aTHX_ sv, mg) : 0; |
1096 | } |
1117 | } |
1097 | |
1118 | |
1098 | static int ecb_cold |
1119 | static int ecb_cold |
1099 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
1120 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
1100 | { |
1121 | { |
… | |
… | |
1114 | SvREFCNT_dec (old); |
1135 | SvREFCNT_dec (old); |
1115 | return 0; |
1136 | return 0; |
1116 | } |
1137 | } |
1117 | } |
1138 | } |
1118 | |
1139 | |
1119 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
1140 | return PL_vtbl_sigelem.svt_clear ? PL_vtbl_sigelem.svt_clear (aTHX_ sv, mg) : 0; |
1120 | } |
1141 | } |
1121 | |
1142 | |
1122 | static int ecb_cold |
1143 | static int ecb_cold |
1123 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
1144 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
1124 | { |
1145 | { |
… | |
… | |
1138 | SvREFCNT_dec (old); |
1159 | SvREFCNT_dec (old); |
1139 | return 0; |
1160 | return 0; |
1140 | } |
1161 | } |
1141 | } |
1162 | } |
1142 | |
1163 | |
1143 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
1164 | return PL_vtbl_sigelem.svt_set ? PL_vtbl_sigelem.svt_set (aTHX_ sv, mg) : 0; |
1144 | } |
1165 | } |
1145 | |
1166 | |
1146 | static void |
1167 | static void |
1147 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
1168 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
1148 | { |
1169 | { |
… | |
… | |
1159 | static int |
1180 | static int |
1160 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
1181 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
1161 | { |
1182 | { |
1162 | return 1; |
1183 | return 1; |
1163 | } |
1184 | } |
|
|
1185 | |
|
|
1186 | /** coroutine stack handling ************************************************/ |
1164 | |
1187 | |
1165 | static UNOP init_perl_op; |
1188 | static UNOP init_perl_op; |
1166 | |
1189 | |
1167 | ecb_noinline static void /* noinline to keep it out of the transfer fast path */ |
1190 | ecb_noinline static void /* noinline to keep it out of the transfer fast path */ |
1168 | init_perl (pTHX_ struct coro *coro) |
1191 | init_perl (pTHX_ struct coro *coro) |
… | |
… | |
3631 | cctx_current = cctx_new_empty (); |
3654 | cctx_current = cctx_new_empty (); |
3632 | |
3655 | |
3633 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
3656 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
3634 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
3657 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
3635 | |
3658 | |
3636 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
3659 | { |
3637 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
3660 | /* |
3638 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
3661 | * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig |
|
|
3662 | * by coro_sig_vtbl in hash values. |
|
|
3663 | */ |
|
|
3664 | MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig); |
|
|
3665 | |
|
|
3666 | /* this only works if perl doesn't have a vtbl for %SIG */ |
|
|
3667 | assert (!mg->mg_virtual); |
|
|
3668 | |
|
|
3669 | /* |
|
|
3670 | * The irony is that the perl API itself asserts that mg_virtual |
|
|
3671 | * must be non-const, yet perl5porters insisted on marking their |
|
|
3672 | * vtbls as read-only, just to thwart perl modules from patching |
|
|
3673 | * them. |
|
|
3674 | */ |
|
|
3675 | mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl; |
|
|
3676 | mg->mg_flags |= MGf_COPY; |
|
|
3677 | |
|
|
3678 | coro_sigelem_vtbl = PL_vtbl_sigelem; |
|
|
3679 | coro_sigelem_vtbl.svt_get = coro_sigelem_get; |
|
|
3680 | coro_sigelem_vtbl.svt_set = coro_sigelem_set; |
|
|
3681 | coro_sigelem_vtbl.svt_clear = coro_sigelem_clr; |
|
|
3682 | } |
3639 | |
3683 | |
3640 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
3684 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
3641 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
3685 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
3642 | |
3686 | |
3643 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
3687 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |