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Comparing Coro/Coro/State.xs (file contents):
Revision 1.457 by root, Fri Jun 17 04:49:22 2016 UTC vs.
Revision 1.475 by root, Tue Aug 14 16:51:38 2018 UTC

… …
2#define USE_NO_MINGW_SETJMP_TWO_ARGS 2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3 3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */ 4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5 5
6#include "libcoro/coro.c" 6#include "libcoro/coro.c"
7
8#if CORO_UCONTEXT
9 #define CORO_BACKEND "ucontext"
10#elif CORO_SJLJ
11 #define CORO_BACKEND "sjlj"
12#elif CORO_LINUX
13 #define CORO_BACKEND "linux"
14#elif CORO_LOSER
15 #define CORO_BACKEND "loser"
16#elif CORO_FIBER
17 #define CORO_BACKEND "fiber"
18#elif CORO_IRIX
19 #define CORO_BACKEND "irix"
20#elif CORO_ASM
21 #define CORO_BACKEND "asm"
22#elif CORO_PTHREAD
23 #define CORO_BACKEND "pthread"
24#else
25 #define CORO_BACKEND "unknown"
26#endif
7 27
8#define PERL_NO_GET_CONTEXT 28#define PERL_NO_GET_CONTEXT
9#define PERL_EXT 29#define PERL_EXT
10 30
11#include "EXTERN.h" 31#include "EXTERN.h"
… …
116# define CORO_CLOCK_MONOTONIC 1 136# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3 137# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif 138# endif
119#endif 139#endif
120 140
141/* one off bugfix for perl 5.22 */
142#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
143# undef PadlistNAMES
144# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
145#endif
146
147#if PERL_VERSION_ATLEAST(5,24,0)
148# define SUB_ARGARRAY PL_curpad[0]
149#else
150# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
151#endif
152
153/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
154#if 0
155# undef NDEBUG
156# include <assert.h>
157#endif
158
121static double (*nvtime)(); /* so why doesn't it take void? */ 159static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]); 160static void (*u2time)(pTHX_ UV ret[2]);
123 161
124/* we hijack an hopefully unused CV flag for our purposes */ 162/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000 163#define CVf_SLF 0x4000
… …
730static void 768static void
731swap_svs_enter (pTHX_ Coro__State c) 769swap_svs_enter (pTHX_ Coro__State c)
732{ 770{
733 int i; 771 int i;
734 772
773 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
774 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
775}
776
777static void
778swap_svs_leave (pTHX_ Coro__State c)
779{
780 int i;
781
735 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2) 782 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
736 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
737}
738
739static void
740swap_svs_leave (pTHX_ Coro__State c)
741{
742 int i;
743
744 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
745 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]); 783 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
746} 784}
747 785
748#define SWAP_SVS_ENTER(coro) \ 786#define SWAP_SVS_ENTER(coro) \
749 if (ecb_expect_false ((coro)->swap_sv)) \ 787 if (ecb_expect_false ((coro)->swap_sv)) \
… …
963#endif 1001#endif
964 1002
965 New(54,PL_savestack,24,ANY); 1003 New(54,PL_savestack,24,ANY);
966 PL_savestack_ix = 0; 1004 PL_savestack_ix = 0;
967 PL_savestack_max = 24; 1005 PL_savestack_max = 24;
1006#if PERL_VERSION_ATLEAST (5,24,0)
1007 /* perl 5.24 moves SS_MAXPUSH optimisation from */
1008 /* the header macros to PL_savestack_max */
1009 PL_savestack_max -= SS_MAXPUSH;
1010#endif
968 1011
969#if !PERL_VERSION_ATLEAST (5,10,0) 1012#if !PERL_VERSION_ATLEAST (5,10,0)
970 New(54,PL_retstack,4,OP*); 1013 New(54,PL_retstack,4,OP*);
971 PL_retstack_ix = 0; 1014 PL_retstack_ix = 0;
972 PL_retstack_max = 4; 1015 PL_retstack_max = 4;
… …
1038 } 1081 }
1039 1082
1040 return rss; 1083 return rss;
1041} 1084}
1042 1085
1043/** coroutine stack handling ************************************************/ 1086/** provide custom get/set/clear methods for %SIG elements ******************/
1044
1045static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
1046static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
1047static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
1048 1087
1049/* apparently < 5.8.8 */ 1088/* apparently < 5.8.8 */
1050#ifndef MgPV_nolen_const 1089#ifndef MgPV_nolen_const
1051#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1090#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
1052 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1091 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
1053 (const char*)(mg)->mg_ptr) 1092 (const char*)(mg)->mg_ptr)
1054#endif 1093#endif
1094
1095/* this will be a patched copy of PL_vtbl_sigelem */
1096static MGVTBL coro_sigelem_vtbl;
1097
1098static int ecb_cold
1099coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1100{
1101 char *key = SvPV_nolen ((SV *)name);
1102
1103 /* do what mg_copy normally does */
1104 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1105 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1106
1107 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1108 if (*key == '_'
1109 && (strEQ (key, "__DIE__")
1110 || strEQ (key, "__WARN__")))
1111 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1112
1113 return 1;
1114}
1115
1116/* perl does not have a %SIG vtbl, we provide one so we can override */
1117/* the magic vtbl for the __DIE__ and __WARN__ members */
1118static const MGVTBL coro_sig_vtbl = {
1119 0, 0, 0, 0, 0,
1120 coro_sig_copy
1121};
1055 1122
1056/* 1123/*
1057 * This overrides the default magic get method of %SIG elements. 1124 * This overrides the default magic get method of %SIG elements.
1058 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1125 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
1059 * and instead of trying to save and restore the hash elements (extremely slow), 1126 * and instead of trying to save and restore the hash elements (extremely slow),
… …
1061 */ 1128 */
1062static int ecb_cold 1129static int ecb_cold
1063coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
1064{ 1131{
1065 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1066 1135
1067 if (*s == '_') 1136 SV *ssv;
1068 {
1069 SV **svp = 0;
1070 1137
1071 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1072 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1073
1074 if (svp) 1138 if (!*svp)
1075 {
1076 SV *ssv;
1077
1078 if (!*svp)
1079 ssv = &PL_sv_undef; 1139 ssv = &PL_sv_undef;
1080 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */ 1140 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1081 ssv = sv_2mortal (newRV_inc (*svp)); 1141 ssv = sv_2mortal (newRV_inc (*svp));
1082 else 1142 else
1083 ssv = *svp; 1143 ssv = *svp;
1084 1144
1085 sv_setsv (sv, ssv); 1145 sv_setsv (sv, ssv);
1086 return 0; 1146 return 0;
1087 }
1088 }
1089
1090 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
1091} 1147}
1092 1148
1093static int ecb_cold 1149static int ecb_cold
1094coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1150coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
1095{ 1151{
1096 const char *s = MgPV_nolen_const (mg); 1152 const char *s = MgPV_nolen_const (mg);
1153 /* the key must be either __DIE__ or __WARN__ here */
1154 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1097 1155
1098 if (*s == '_')
1099 {
1100 SV **svp = 0;
1101
1102 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1103 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1104
1105 if (svp)
1106 {
1107 SV *old = *svp; 1156 SV *old = *svp;
1108 *svp = 0; 1157 *svp = 0;
1109 SvREFCNT_dec (old); 1158 SvREFCNT_dec (old);
1110 return 0; 1159 return 0;
1111 }
1112 }
1113
1114 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1115} 1160}
1116 1161
1117static int ecb_cold 1162static int ecb_cold
1118coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1163coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1119{ 1164{
1120 const char *s = MgPV_nolen_const (mg); 1165 const char *s = MgPV_nolen_const (mg);
1166 /* the key must be either __DIE__ or __WARN__ here */
1167 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1121 1168
1122 if (*s == '_')
1123 {
1124 SV **svp = 0;
1125
1126 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1127 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1128
1129 if (svp)
1130 {
1131 SV *old = *svp; 1169 SV *old = *svp;
1132 *svp = SvOK (sv) ? newSVsv (sv) : 0; 1170 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1133 SvREFCNT_dec (old); 1171 SvREFCNT_dec (old);
1134 return 0; 1172 return 0;
1135 }
1136 }
1137
1138 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
1139} 1173}
1140 1174
1141static void 1175static void
1142prepare_nop (pTHX_ struct coro_transfer_args *ta) 1176prepare_nop (pTHX_ struct coro_transfer_args *ta)
1143{ 1177{
… …
1154static int 1188static int
1155slf_check_repeat (pTHX_ struct CoroSLF *frame) 1189slf_check_repeat (pTHX_ struct CoroSLF *frame)
1156{ 1190{
1157 return 1; 1191 return 1;
1158} 1192}
1193
1194/** coroutine stack handling ************************************************/
1159 1195
1160static UNOP init_perl_op; 1196static UNOP init_perl_op;
1161 1197
1162ecb_noinline static void /* noinline to keep it out of the transfer fast path */ 1198ecb_noinline static void /* noinline to keep it out of the transfer fast path */
1163init_perl (pTHX_ struct coro *coro) 1199init_perl (pTHX_ struct coro *coro)
… …
1206 myop.op_next = Nullop; 1242 myop.op_next = Nullop;
1207 myop.op_type = OP_ENTERSUB; 1243 myop.op_type = OP_ENTERSUB;
1208 myop.op_flags = OPf_WANT_VOID; 1244 myop.op_flags = OPf_WANT_VOID;
1209 1245
1210 PUSHMARK (SP); 1246 PUSHMARK (SP);
1211 PUSHs ((SV *)coro->startcv); 1247 XPUSHs ((SV *)coro->startcv);
1212 PUTBACK; 1248 PUTBACK;
1213 PL_op = (OP *)&myop; 1249 PL_op = (OP *)&myop;
1214 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1250 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1215 } 1251 }
1216 1252
… …
1364 av_push (av, SvREFCNT_inc_NN (*bot++)); 1400 av_push (av, SvREFCNT_inc_NN (*bot++));
1365 1401
1366 PL_runops = RUNOPS_DEFAULT; 1402 PL_runops = RUNOPS_DEFAULT;
1367 ENTER; 1403 ENTER;
1368 SAVETMPS; 1404 SAVETMPS;
1405 PUSHMARK (SP);
1369 EXTEND (SP, 3); 1406 EXTEND (SP, 3);
1370 PUSHMARK (SP);
1371 PUSHs (&PL_sv_no); 1407 PUSHs (&PL_sv_no);
1372 PUSHs (fullname); 1408 PUSHs (fullname);
1373 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1409 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1374 PUTBACK; 1410 PUTBACK;
1375 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1411 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
… …
1402 gv_efullname3 (fullname, gv, 0); 1438 gv_efullname3 (fullname, gv, 0);
1403 1439
1404 PL_runops = RUNOPS_DEFAULT; 1440 PL_runops = RUNOPS_DEFAULT;
1405 ENTER; 1441 ENTER;
1406 SAVETMPS; 1442 SAVETMPS;
1443 PUSHMARK (SP);
1407 EXTEND (SP, 3); 1444 EXTEND (SP, 3);
1408 PUSHMARK (SP);
1409 PUSHs (&PL_sv_yes); 1445 PUSHs (&PL_sv_yes);
1410 PUSHs (fullname); 1446 PUSHs (fullname);
1411 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1447 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1412 PUTBACK; 1448 PUTBACK;
1413 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1449 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1414 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1450 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1415 SPAGAIN; 1451 SPAGAIN;
1416 FREETMPS; 1452 FREETMPS;
… …
1426 dSP; 1462 dSP;
1427 1463
1428 PL_runops = RUNOPS_DEFAULT; 1464 PL_runops = RUNOPS_DEFAULT;
1429 ENTER; 1465 ENTER;
1430 SAVETMPS; 1466 SAVETMPS;
1431 EXTEND (SP, 3);
1432 PL_runops = RUNOPS_DEFAULT;
1433 PUSHMARK (SP); 1467 PUSHMARK (SP);
1468 EXTEND (SP, 2);
1434 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1469 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1435 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1470 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1436 PUTBACK; 1471 PUTBACK;
1437 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); 1472 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1438 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1473 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
… …
1538 * coro body here, as perl_run destroys these. Likewise, we cannot catch 1573 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1539 * runtime errors here, as this is just a random interpreter, not a thread. 1574 * runtime errors here, as this is just a random interpreter, not a thread.
1540 */ 1575 */
1541 1576
1542 /* 1577 /*
1578 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1579 * requires PL_scopestack_ix, so do it here if required.
1580 */
1581 if (!PL_scopestack_ix)
1582 ENTER;
1583
1584 /*
1543 * If perl-run returns we assume exit() was being called or the coro 1585 * If perl-run returns we assume exit() was being called or the coro
1544 * fell off the end, which seems to be the only valid (non-bug) 1586 * fell off the end, which seems to be the only valid (non-bug)
1545 * reason for perl_run to return. We try to mimic whatever perl is normally 1587 * reason for perl_run to return. We try to mimic whatever perl is normally
1546 * doing in that case. YMMV. 1588 * doing in that case. YMMV.
1547 */ 1589 */
… …
2349safe_cancel (pTHX_ struct coro *coro, SV **arg, int items) 2391safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2350{ 2392{
2351 if (coro->cctx) 2393 if (coro->cctx)
2352 croak ("coro inside C callback, unable to cancel at this time, caught"); 2394 croak ("coro inside C callback, unable to cancel at this time, caught");
2353 2395
2354 if (coro->flags & CF_NEW) 2396 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2355 { 2397 {
2356 coro_set_status (aTHX_ coro, arg, items); 2398 coro_set_status (aTHX_ coro, arg, items);
2357 coro_state_destroy (aTHX_ coro); 2399 coro_state_destroy (aTHX_ coro);
2358 } 2400 }
2359 else 2401 else
… …
2426 else 2468 else
2427 { 2469 {
2428 av_clear (GvAV (PL_defgv)); 2470 av_clear (GvAV (PL_defgv));
2429 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2471 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2430 2472
2473 if (ecb_expect_false (coro->swap_sv))
2474 {
2475 SWAP_SVS_LEAVE (coro);
2476 SvREFCNT_dec_NN (coro->swap_sv);
2477 coro->swap_sv = 0;
2478 }
2479
2431 coro->prio = 0; 2480 coro->prio = 0;
2432 2481
2433 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2482 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2434 api_trace (aTHX_ coro_current, 0); 2483 api_trace (aTHX_ coro_current, 0);
2435 2484
2436 frame->prepare = prepare_schedule; 2485 frame->prepare = prepare_schedule;
2437 av_push (av_async_pool, SvREFCNT_inc (hv)); 2486 av_push (av_async_pool, SvREFCNT_inc (hv));
2438 } 2487 }
… …
3567 3616
3568 map_len = load_len + save_len + 16; 3617 map_len = load_len + save_len + 16;
3569 3618
3570 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); 3619 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3571 3620
3621 if (map_base == (char *)MAP_FAILED)
3622 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3623
3572 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED)); 3624 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3573 3625
3574 load_perl_slots = (load_save_perl_slots_type)map_base; 3626 load_perl_slots = (load_save_perl_slots_type)map_base;
3575 memcpy (map_base, load_ptr, load_len); 3627 memcpy (map_base, load_ptr, load_len);
3576 3628
… …
3612 cctx_current = cctx_new_empty (); 3664 cctx_current = cctx_new_empty ();
3613 3665
3614 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3666 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3615 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3667 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3616 3668
3617 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3669 {
3618 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3670 /*
3619 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3671 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3672 * by coro_sig_vtbl in hash values.
3673 */
3674 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3675
3676 /* this only works if perl doesn't have a vtbl for %SIG */
3677 assert (!mg->mg_virtual);
3678
3679 /*
3680 * The irony is that the perl API itself asserts that mg_virtual
3681 * must be non-const, yet perl5porters insisted on marking their
3682 * vtbls as read-only, just to thwart perl modules from patching
3683 * them.
3684 */
3685 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3686 mg->mg_flags |= MGf_COPY;
3687
3688 coro_sigelem_vtbl = PL_vtbl_sigelem;
3689 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3690 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3691 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3692 }
3620 3693
3621 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3694 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3622 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3695 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
3623 3696
3624 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3697 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3698
3699 newCONSTSUB (coro_state_stash, "BACKEND", newSVpv (CORO_BACKEND, 0)); /* undocumented */
3625 3700
3626 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3701 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
3627 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3702 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
3628 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3703 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
3629 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3704 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
… …
3754call (Coro::State coro, SV *coderef) 3829call (Coro::State coro, SV *coderef)
3755 ALIAS: 3830 ALIAS:
3756 eval = 1 3831 eval = 1
3757 CODE: 3832 CODE:
3758{ 3833{
3834 struct coro *current = SvSTATE_current;
3835
3759 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3836 if ((coro == current) || (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)))
3760 { 3837 {
3761 struct coro *current = SvSTATE_current;
3762 struct CoroSLF slf_save; 3838 struct CoroSLF slf_save;
3763 3839
3764 if (current != coro) 3840 if (current != coro)
3765 { 3841 {
3766 PUTBACK; 3842 PUTBACK;
… …
4025 coroapi.enterleave_hook = api_enterleave_hook; 4101 coroapi.enterleave_hook = api_enterleave_hook;
4026 coroapi.enterleave_unhook = api_enterleave_unhook; 4102 coroapi.enterleave_unhook = api_enterleave_unhook;
4027 coroapi.enterleave_scope_hook = api_enterleave_scope_hook; 4103 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4028 4104
4029 /*GCoroAPI = &coroapi;*/ 4105 /*GCoroAPI = &coroapi;*/
4030 sv_setiv (sv, (IV)&coroapi); 4106 sv_setiv (sv, PTR2IV (&coroapi));
4031 SvREADONLY_on (sv); 4107 SvREADONLY_on (sv);
4032 } 4108 }
4033} 4109}
4034 4110
4035SV * 4111SV *

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