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Comparing Coro/Coro/State.xs (file contents):
Revision 1.262 by root, Mon Nov 10 20:38:19 2008 UTC vs.
Revision 1.286 by root, Mon Nov 17 04:19:49 2008 UTC

… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58 55
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 117#endif
121 118
122/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 120 * portable way as possible. */
124#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
125#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
126 126
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 128
129#if __GNUC__ >= 3 129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else 133#else
134# define attribute(x) 134# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
137#endif 137#endif
138 138
139#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
141 141
142#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
143 143
144#include "CoroAPI.h" 144#include "CoroAPI.h"
145 145
146#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 147# if CORO_PTHREAD
152static void *coro_thx; 148static void *coro_thx;
153# endif 149# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 150#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166 151
167/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
168struct io_state 153struct io_state
169{ 154{
170 AV *res; 155 AV *res;
… …
181static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 168static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192 171
193static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 174static SV *rv_diehook;
196static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 196};
218 197
219/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 199typedef struct coro_cctx
200{
221 struct coro_cctx *next; 201 struct coro_cctx *next;
222 202
223 /* the stack */ 203 /* the stack */
224 void *sptr; 204 void *sptr;
225 size_t ssize; 205 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 225};
246 226
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 228typedef struct
229{
249 SV *defsv; 230 SV *defsv;
250 AV *defav; 231 AV *defav;
251 SV *errsv; 232 SV *errsv;
252 SV *irsgv; 233 SV *irsgv;
253#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
257 238
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 240
260/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
261struct coro { 242struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 244 coro_cctx *cctx;
264 245
265 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 248 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
268 250
269 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
273 256
274 /* statistics */ 257 /* statistics */
275 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
276 259
277 /* coro process data */ 260 /* coro process data */
… …
285 struct coro *next, *prev; 268 struct coro *next, *prev;
286}; 269};
287 270
288typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
290 279
291/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
292 281
293#define PRIO_MAX 3 282#define PRIO_MAX 3
294#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
299 288
300/* for Coro.pm */ 289/* for Coro.pm */
301static SV *coro_current; 290static SV *coro_current;
302static SV *coro_readyhook; 291static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready;
305static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
306 295
307/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
308 297
309static SV * 298static SV *
310coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
… …
403static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 393 0, 0, 0, 0,
405 coro_cv_free 394 coro_cv_free
406}; 395};
407 396
408#define CORO_MAGIC(sv, type) \ 397#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 398 expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
411 ? SvMAGIC (sv) \ 400 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \ 401 : mg_find (sv, type) \
413 : 0 402 : 0
414 403
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417 406
418static struct coro * 407INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 408SvSTATE_ (pTHX_ SV *coro)
420{ 409{
421 HV *stash; 410 HV *stash;
422 MAGIC *mg; 411 MAGIC *mg;
423 412
… …
438 mg = CORO_MAGIC_state (coro); 427 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
440} 429}
441 430
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 445
444/* the next two functions merely cache the padlists */ 446/* the next two functions merely cache the padlists */
445static void 447static void
446get_padlist (pTHX_ CV *cv) 448get_padlist (pTHX_ CV *cv)
447{ 449{
… …
514 CvPADLIST (cv) = (AV *)POPs; 516 CvPADLIST (cv) = (AV *)POPs;
515 } 517 }
516 518
517 PUTBACK; 519 PUTBACK;
518 } 520 }
521
522 slf_frame = c->slf_frame;
523 coro_throw = c->throw;
519} 524}
520 525
521static void 526static void
522save_perl (pTHX_ Coro__State c) 527save_perl (pTHX_ Coro__State c)
523{ 528{
529 c->throw = coro_throw;
530 c->slf_frame = slf_frame;
531
524 { 532 {
525 dSP; 533 dSP;
526 I32 cxix = cxstack_ix; 534 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 535 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 536 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 603 #undef VAR
596 } 604 }
597} 605}
598 606
599/* 607/*
600 * allocate various perl stacks. This is an exact copy 608 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 609 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 610 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 611 * not usually need a lot of stackspace.
604 */ 612 */
605#if CORO_PREFER_PERL_FUNCTIONS 613#if CORO_PREFER_PERL_FUNCTIONS
… …
807 815
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809} 817}
810 818
811static void 819static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{
822 /* kind of mega-hacky, but works */
823 ta->next = ta->prev = (struct coro *)ta;
824}
825
826static int
827slf_check_nop (pTHX_ struct CoroSLF *frame)
828{
829 return 0;
830}
831
832static void NOINLINE /* noinline to keep it out of the transfer fast path */
812coro_setup (pTHX_ struct coro *coro) 833coro_setup (pTHX_ struct coro *coro)
813{ 834{
814 /* 835 /*
815 * emulate part of the perl startup here. 836 * emulate part of the perl startup here.
816 */ 837 */
… …
855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
856 SPAGAIN; 877 SPAGAIN;
857 } 878 }
858 879
859 /* this newly created coroutine might be run on an existing cctx which most 880 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub. 881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
861 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
862 * so we ENTER here for symmetry.
863 */ 882 */
864 ENTER; 883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
885
886 coro_throw = coro->throw;
865} 887}
866 888
867static void 889static void
868coro_destruct (pTHX_ struct coro *coro) 890coro_destruct (pTHX_ struct coro *coro)
869{ 891{
… …
893 915
894 SvREFCNT_dec (PL_diehook); 916 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook); 917 SvREFCNT_dec (PL_warnhook);
896 918
897 SvREFCNT_dec (coro->saved_deffh); 919 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw); 920 SvREFCNT_dec (coro_throw);
899 921
900 coro_destruct_stacks (aTHX); 922 coro_destruct_stacks (aTHX);
901} 923}
902 924
903static void 925INLINE void
904free_coro_mortal (pTHX) 926free_coro_mortal (pTHX)
905{ 927{
906 if (expect_true (coro_mortal)) 928 if (expect_true (coro_mortal))
907 { 929 {
908 SvREFCNT_dec (coro_mortal); 930 SvREFCNT_dec (coro_mortal);
… …
913static int 935static int
914runops_trace (pTHX) 936runops_trace (pTHX)
915{ 937{
916 COP *oldcop = 0; 938 COP *oldcop = 0;
917 int oldcxix = -2; 939 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx; 941 coro_cctx *cctx = coro->cctx;
920 942
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 { 944 {
923 PERL_ASYNC_CHECK (); 945 PERL_ASYNC_CHECK ();
… …
1033 TAINT_NOT; 1055 TAINT_NOT;
1034 return 0; 1056 return 0;
1035} 1057}
1036 1058
1037static void 1059static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1039{ 1061{
1040 ta->prev = (struct coro *)cctx; 1062 ta->prev = (struct coro *)cctx;
1041 ta->next = 0; 1063 ta->next = 0;
1042} 1064}
1043 1065
… …
1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1070 SPAGAIN; 1092 SPAGAIN;
1071} 1093}
1072 1094
1073/* the tail of transfer: execute stuff we can only do after a transfer */ 1095/* the tail of transfer: execute stuff we can only do after a transfer */
1074static void 1096INLINE void
1075transfer_tail (pTHX) 1097transfer_tail (pTHX)
1076{ 1098{
1077 struct coro *next = (struct coro *)transfer_next;
1078 transfer_next = 0; //D for temporary assertion in transfer
1079 assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
1080
1081 free_coro_mortal (aTHX); 1099 free_coro_mortal (aTHX);
1082 UNLOCK;
1083
1084 if (expect_false (next->throw))
1085 {
1086 SV *exception = sv_2mortal (next->throw);
1087
1088 next->throw = 0;
1089 sv_setsv (ERRSV, exception);
1090 croak (0);
1091 }
1092} 1100}
1093 1101
1094/* 1102/*
1095 * this is a _very_ stripped down perl interpreter ;) 1103 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1104 */
… …
1103# endif 1111# endif
1104#endif 1112#endif
1105 { 1113 {
1106 dTHX; 1114 dTHX;
1107 1115
1108 /* entersub called ENTER, but we never 'returned', undo that here */ 1116 /* normally we would need to skip the entersub here */
1109 LEAVE; 1117 /* not doing so will re-execute it, which is exactly what we want */
1110
1111 /* we now skip the entersub that did lead to transfer() */
1112 PL_op = PL_op->op_next; 1118 /* PL_nop = PL_nop->op_next */
1113 1119
1114 /* inject a fake subroutine call to cctx_init */ 1120 /* inject a fake subroutine call to cctx_init */
1115 cctx_prepare (aTHX_ (coro_cctx *)arg); 1121 cctx_prepare (aTHX_ (coro_cctx *)arg);
1116 1122
1117 /* cctx_run is the alternative tail of transfer() */ 1123 /* cctx_run is the alternative tail of transfer() */
… …
1173 /* mmap supposedly does allocate-on-write for us */ 1179 /* mmap supposedly does allocate-on-write for us */
1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175 1181
1176 if (cctx->sptr != (void *)-1) 1182 if (cctx->sptr != (void *)-1)
1177 { 1183 {
1178# if CORO_STACKGUARD 1184 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180# endif 1186 #endif
1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED; 1189 cctx->flags |= CC_MAPPED;
1184 } 1190 }
1185 else 1191 else
1186#endif 1192#endif
1187 { 1193 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long); 1195 New (0, cctx->sptr, cctx_stacksize, long);
1190 1196
1191 if (!cctx->sptr) 1197 if (!cctx->sptr)
1192 { 1198 {
1193 perror ("FATAL: unable to allocate stack for coroutine"); 1199 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1200 _exit (EXIT_FAILURE);
1195 } 1201 }
1196 1202
1197 stack_start = cctx->sptr; 1203 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize; 1204 stack_size = cctx->ssize;
1199 } 1205 }
1200 1206
1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1203 1212
1204 return cctx; 1213 return cctx;
1205} 1214}
1206 1215
… …
1214 coro_destroy (&cctx->cctx); 1223 coro_destroy (&cctx->cctx);
1215 1224
1216 /* coro_transfer creates new, empty cctx's */ 1225 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr) 1226 if (cctx->sptr)
1218 { 1227 {
1219#if CORO_USE_VALGRIND 1228 #if CORO_USE_VALGRIND
1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1221#endif 1230 #endif
1222 1231
1223#if HAVE_MMAP 1232#if HAVE_MMAP
1224 if (cctx->flags & CC_MAPPED) 1233 if (cctx->flags & CC_MAPPED)
1225 munmap (cctx->sptr, cctx->ssize); 1234 munmap (cctx->sptr, cctx->ssize);
1226 else 1235 else
… …
1253} 1262}
1254 1263
1255static void 1264static void
1256cctx_put (coro_cctx *cctx) 1265cctx_put (coro_cctx *cctx)
1257{ 1266{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1259 1268
1260 /* free another cctx if overlimit */ 1269 /* free another cctx if overlimit */
1261 if (expect_false (cctx_idle >= cctx_max_idle)) 1270 if (expect_false (cctx_idle >= cctx_max_idle))
1262 { 1271 {
1263 coro_cctx *first = cctx_first; 1272 coro_cctx *first = cctx_first;
… …
1275/** coroutine switching *****************************************************/ 1284/** coroutine switching *****************************************************/
1276 1285
1277static void 1286static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next) 1287transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{ 1288{
1289 /* TODO: throwing up here is considered harmful */
1290
1280 if (expect_true (prev != next)) 1291 if (expect_true (prev != next))
1281 { 1292 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1283 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1284 1295
1285 if (expect_false (next->flags & CF_RUNNING)) 1296 if (expect_false (next->flags & CF_RUNNING))
1286 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1287 1298
1288 if (expect_false (next->flags & CF_DESTROYED)) 1299 if (expect_false (next->flags & CF_DESTROYED))
1289 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1290 1301
1291#if !PERL_VERSION_ATLEAST (5,10,0) 1302#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1303 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1294#endif 1305#endif
1295 } 1306 }
1296} 1307}
1297 1308
1298/* always use the TRANSFER macro */ 1309/* always use the TRANSFER macro */
1299static void NOINLINE 1310static void NOINLINE /* noinline so we have a fixed stackframe */
1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1301{ 1312{
1302 dSTACKLEVEL; 1313 dSTACKLEVEL;
1303 1314
1304 /* sometimes transfer is only called to set idle_sp */ 1315 /* sometimes transfer is only called to set idle_sp */
1305 if (expect_false (!next)) 1316 if (expect_false (!next))
1306 { 1317 {
1307 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1308 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1309 } 1320 }
1310 else if (expect_true (prev != next)) 1321 else if (expect_true (prev != next))
1311 { 1322 {
1312 coro_cctx *prev__cctx; 1323 coro_cctx *prev__cctx;
… …
1319 prev->flags |= CF_RUNNING; 1330 prev->flags |= CF_RUNNING;
1320 } 1331 }
1321 1332
1322 prev->flags &= ~CF_RUNNING; 1333 prev->flags &= ~CF_RUNNING;
1323 next->flags |= CF_RUNNING; 1334 next->flags |= CF_RUNNING;
1324
1325 LOCK;
1326 1335
1327 /* first get rid of the old state */ 1336 /* first get rid of the old state */
1328 save_perl (aTHX_ prev); 1337 save_perl (aTHX_ prev);
1329 1338
1330 if (expect_false (next->flags & CF_NEW)) 1339 if (expect_false (next->flags & CF_NEW))
… …
1339 1348
1340 prev__cctx = prev->cctx; 1349 prev__cctx = prev->cctx;
1341 1350
1342 /* possibly untie and reuse the cctx */ 1351 /* possibly untie and reuse the cctx */
1343 if (expect_true ( 1352 if (expect_true (
1344 prev__cctx->idle_sp == STACKLEVEL 1353 prev__cctx->idle_sp == (void *)stacklevel
1345 && !(prev__cctx->flags & CC_TRACE) 1354 && !(prev__cctx->flags & CC_TRACE)
1346 && !force_cctx 1355 && !force_cctx
1347 )) 1356 ))
1348 { 1357 {
1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1351 1360
1352 prev->cctx = 0; 1361 prev->cctx = 0;
1353 1362
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1355 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1362 1371
1363 ++next->usecount; 1372 ++next->usecount;
1364 1373
1365 if (expect_true (!next->cctx)) 1374 if (expect_true (!next->cctx))
1366 next->cctx = cctx_get (aTHX); 1375 next->cctx = cctx_get (aTHX);
1367
1368 assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
1369 transfer_next = next;
1370 1376
1371 if (expect_false (prev__cctx != next->cctx)) 1377 if (expect_false (prev__cctx != next->cctx))
1372 { 1378 {
1373 prev__cctx->top_env = PL_top_env; 1379 prev__cctx->top_env = PL_top_env;
1374 PL_top_env = next->cctx->top_env; 1380 PL_top_env = next->cctx->top_env;
… …
1388coro_state_destroy (pTHX_ struct coro *coro) 1394coro_state_destroy (pTHX_ struct coro *coro)
1389{ 1395{
1390 if (coro->flags & CF_DESTROYED) 1396 if (coro->flags & CF_DESTROYED)
1391 return 0; 1397 return 0;
1392 1398
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro);
1401
1393 coro->flags |= CF_DESTROYED; 1402 coro->flags |= CF_DESTROYED;
1394 1403
1395 if (coro->flags & CF_READY) 1404 if (coro->flags & CF_READY)
1396 { 1405 {
1397 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1406 /* reduce nready, as destroying a ready coro effectively unreadies it */
1398 /* alternative: look through all ready queues and remove the coro */ 1407 /* alternative: look through all ready queues and remove the coro */
1399 LOCK;
1400 --coro_nready; 1408 --coro_nready;
1401 UNLOCK;
1402 } 1409 }
1403 else 1410 else
1404 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1405 1412
1406 if (coro->mainstack && coro->mainstack != main_mainstack) 1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1407 { 1414 {
1408 struct coro temp; 1415 struct coro temp;
1409 1416
1410 if (coro->flags & CF_RUNNING) 1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1411 croak ("FATAL: tried to destroy currently running coroutine");
1412 1418
1413 save_perl (aTHX_ &temp); 1419 save_perl (aTHX_ &temp);
1414 load_perl (aTHX_ coro); 1420 load_perl (aTHX_ coro);
1415 1421
1416 coro_destruct (aTHX_ coro); 1422 coro_destruct (aTHX_ coro);
… …
1467# define MGf_DUP 0 1473# define MGf_DUP 0
1468#endif 1474#endif
1469}; 1475};
1470 1476
1471static void 1477static void
1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1478prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1473{ 1479{
1474 ta->prev = SvSTATE (prev_sv); 1480 ta->prev = SvSTATE (prev_sv);
1475 ta->next = SvSTATE (next_sv); 1481 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta); 1482 TRANSFER_CHECK (*ta);
1477} 1483}
1478 1484
1479static void 1485static void
1480api_transfer (SV *prev_sv, SV *next_sv) 1486api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1481{ 1487{
1482 dTHX;
1483 struct transfer_args ta; 1488 struct coro_transfer_args ta;
1484 1489
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1491 TRANSFER (ta, 1);
1487} 1492}
1488 1493
1489/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
1490 1495
1491static void 1496INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1497coro_enq (pTHX_ struct coro *coro)
1493{ 1498{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1500}
1496 1501
1497static SV * 1502INLINE SV *
1498coro_deq (pTHX) 1503coro_deq (pTHX)
1499{ 1504{
1500 int prio; 1505 int prio;
1501 1506
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1505 1510
1506 return 0; 1511 return 0;
1507} 1512}
1508 1513
1509static int 1514static int
1510api_ready (SV *coro_sv) 1515api_ready (pTHX_ SV *coro_sv)
1511{ 1516{
1512 dTHX;
1513 struct coro *coro; 1517 struct coro *coro;
1514 SV *sv_hook; 1518 SV *sv_hook;
1515 void (*xs_hook)(void); 1519 void (*xs_hook)(void);
1516 1520
1517 if (SvROK (coro_sv)) 1521 if (SvROK (coro_sv))
… …
1522 if (coro->flags & CF_READY) 1526 if (coro->flags & CF_READY)
1523 return 0; 1527 return 0;
1524 1528
1525 coro->flags |= CF_READY; 1529 coro->flags |= CF_READY;
1526 1530
1527 LOCK;
1528
1529 sv_hook = coro_nready ? 0 : coro_readyhook; 1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531 1533
1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1534 coro_enq (aTHX_ coro);
1533 ++coro_nready; 1535 ++coro_nready;
1534 1536
1535 UNLOCK;
1536
1537 if (sv_hook) 1537 if (sv_hook)
1538 { 1538 {
1539 dSP; 1539 dSP;
1540 1540
1541 ENTER; 1541 ENTER;
… …
1555 1555
1556 return 1; 1556 return 1;
1557} 1557}
1558 1558
1559static int 1559static int
1560api_is_ready (SV *coro_sv) 1560api_is_ready (pTHX_ SV *coro_sv)
1561{ 1561{
1562 dTHX;
1563 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1562 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1564} 1563}
1565 1564
1566static void 1565INLINE void
1567prepare_schedule (pTHX_ struct transfer_args *ta) 1566prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1568{ 1567{
1569 SV *prev_sv, *next_sv; 1568 SV *prev_sv, *next_sv;
1570 1569
1571 for (;;) 1570 for (;;)
1572 { 1571 {
1573 LOCK;
1574 next_sv = coro_deq (aTHX); 1572 next_sv = coro_deq (aTHX);
1575 1573
1576 /* nothing to schedule: call the idle handler */ 1574 /* nothing to schedule: call the idle handler */
1577 if (expect_false (!next_sv)) 1575 if (expect_false (!next_sv))
1578 { 1576 {
1579 dSP; 1577 dSP;
1580 UNLOCK;
1581 1578
1582 ENTER; 1579 ENTER;
1583 SAVETMPS; 1580 SAVETMPS;
1584 1581
1585 PUSHMARK (SP); 1582 PUSHMARK (SP);
… …
1590 FREETMPS; 1587 FREETMPS;
1591 LEAVE; 1588 LEAVE;
1592 continue; 1589 continue;
1593 } 1590 }
1594 1591
1595 ta->next = SvSTATE (next_sv); 1592 ta->next = SvSTATE_hv (next_sv);
1596 1593
1597 /* cannot transfer to destroyed coros, skip and look for next */ 1594 /* cannot transfer to destroyed coros, skip and look for next */
1598 if (expect_false (ta->next->flags & CF_DESTROYED)) 1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1599 { 1596 {
1600 UNLOCK;
1601 SvREFCNT_dec (next_sv); 1597 SvREFCNT_dec (next_sv);
1602 /* coro_nready has already been taken care of by destroy */ 1598 /* coro_nready has already been taken care of by destroy */
1603 continue; 1599 continue;
1604 } 1600 }
1605 1601
1606 --coro_nready; 1602 --coro_nready;
1607 UNLOCK;
1608 break; 1603 break;
1609 } 1604 }
1610 1605
1611 /* free this only after the transfer */ 1606 /* free this only after the transfer */
1612 prev_sv = SvRV (coro_current); 1607 prev_sv = SvRV (coro_current);
1613 ta->prev = SvSTATE (prev_sv); 1608 ta->prev = SvSTATE_hv (prev_sv);
1614 TRANSFER_CHECK (*ta); 1609 TRANSFER_CHECK (*ta);
1615 assert (ta->next->flags & CF_READY); 1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1616 ta->next->flags &= ~CF_READY; 1611 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv); 1612 SvRV_set (coro_current, next_sv);
1618 1613
1619 LOCK;
1620 free_coro_mortal (aTHX); 1614 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1615 coro_mortal = prev_sv;
1622 UNLOCK;
1623} 1616}
1624 1617
1625static void 1618INLINE void
1626prepare_cede (pTHX_ struct transfer_args *ta) 1619prepare_cede (pTHX_ struct coro_transfer_args *ta)
1627{ 1620{
1628 api_ready (coro_current); 1621 api_ready (aTHX_ coro_current);
1629 prepare_schedule (aTHX_ ta); 1622 prepare_schedule (aTHX_ ta);
1630} 1623}
1631 1624
1625INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{
1628 SV *prev = SvRV (coro_current);
1629
1630 if (coro_nready)
1631 {
1632 prepare_schedule (aTHX_ ta);
1633 api_ready (aTHX_ prev);
1634 }
1635 else
1636 prepare_nop (aTHX_ ta);
1637}
1638
1639static void
1640api_schedule (pTHX)
1641{
1642 struct coro_transfer_args ta;
1643
1644 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1);
1646}
1647
1632static int 1648static int
1633prepare_cede_notself (pTHX_ struct transfer_args *ta) 1649api_cede (pTHX)
1634{ 1650{
1635 if (coro_nready) 1651 struct coro_transfer_args ta;
1636 { 1652
1637 SV *prev = SvRV (coro_current);
1638 prepare_schedule (aTHX_ ta); 1653 prepare_cede (aTHX_ &ta);
1639 api_ready (prev); 1654
1655 if (expect_true (ta.prev != ta.next))
1656 {
1657 TRANSFER (ta, 1);
1640 return 1; 1658 return 1;
1641 } 1659 }
1642 else 1660 else
1643 return 0; 1661 return 0;
1644} 1662}
1645 1663
1646static void
1647api_schedule (void)
1648{
1649 dTHX;
1650 struct transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1656static int 1664static int
1657api_cede (void) 1665api_cede_notself (pTHX)
1658{ 1666{
1659 dTHX; 1667 if (coro_nready)
1668 {
1660 struct transfer_args ta; 1669 struct coro_transfer_args ta;
1661 1670
1662 prepare_cede (aTHX_ &ta); 1671 prepare_cede_notself (aTHX_ &ta);
1663
1664 if (expect_true (ta.prev != ta.next))
1665 {
1666 TRANSFER (ta, 1); 1672 TRANSFER (ta, 1);
1667 return 1; 1673 return 1;
1668 } 1674 }
1669 else 1675 else
1670 return 0; 1676 return 0;
1671} 1677}
1672 1678
1673static int 1679static void
1674api_cede_notself (void)
1675{
1676 dTHX;
1677 struct transfer_args ta;
1678
1679 if (prepare_cede_notself (aTHX_ &ta))
1680 {
1681 TRANSFER (ta, 1);
1682 return 1;
1683 }
1684 else
1685 return 0;
1686}
1687
1688static void
1689api_trace (SV *coro_sv, int flags) 1680api_trace (pTHX_ SV *coro_sv, int flags)
1690{ 1681{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv); 1682 struct coro *coro = SvSTATE (coro_sv);
1693 1683
1694 if (flags & CC_TRACE) 1684 if (flags & CC_TRACE)
1695 { 1685 {
1696 if (!coro->cctx) 1686 if (!coro->cctx)
1697 coro->cctx = cctx_new_run (); 1687 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE)) 1688 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack"); 1689 croak ("cannot enable tracing on coroutine with custom stack,");
1700 1690
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 } 1692 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 { 1694 {
… …
1709 else 1699 else
1710 coro->slot->runops = RUNOPS_DEFAULT; 1700 coro->slot->runops = RUNOPS_DEFAULT;
1711 } 1701 }
1712} 1702}
1713 1703
1714#if 0
1715static int
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1717{
1718 AV *padlist;
1719 AV *av = (AV *)mg->mg_obj;
1720
1721 abort ();
1722
1723 return 0;
1724}
1725
1726static MGVTBL coro_gensub_vtbl = {
1727 0, 0, 0, 0,
1728 coro_gensub_free
1729};
1730#endif
1731
1732/*****************************************************************************/ 1704/*****************************************************************************/
1733/* PerlIO::cede */ 1705/* PerlIO::cede */
1734 1706
1735typedef struct 1707typedef struct
1736{ 1708{
… …
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime (); 1736 double now = nvtime ();
1765 1737
1766 if (now >= self->next) 1738 if (now >= self->next)
1767 { 1739 {
1768 api_cede (); 1740 api_cede (aTHX);
1769 self->next = now + self->every; 1741 self->next = now + self->every;
1770 } 1742 }
1771 1743
1772 return PerlIOBuf_flush (aTHX_ f); 1744 return PerlIOBuf_flush (aTHX_ f);
1773} 1745}
… …
1802 PerlIOBuf_get_ptr, 1774 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt, 1775 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt, 1776 PerlIOBuf_set_ptrcnt,
1805}; 1777};
1806 1778
1779/*****************************************************************************/
1780
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP *
1791pp_restore (pTHX)
1792{
1793 int i;
1794 SV **SP = PL_stack_base + slf_ax;
1795
1796 PUSHMARK (SP);
1797
1798 EXTEND (SP, slf_argc + 1);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806}
1807
1808static void
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (PL_op->op_flags & OPf_STACKED)
1988 {
1989 if (items > slf_arga)
1990 {
1991 slf_arga = items;
1992 free (slf_argv);
1993 slf_argv = malloc (slf_arga * sizeof (SV *));
1994 }
1995
1996 slf_argc = items;
1997
1998 for (i = 0; i < items; ++i)
1999 slf_argv [i] = SvREFCNT_inc (arg [i]);
2000 }
2001 else
2002 slf_argc = 0;
2003
2004 PL_op->op_ppaddr = pp_slf;
2005 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2006
2007 PL_op = (OP *)&slf_restore;
2008}
2009
2010/*****************************************************************************/
2011
2012static void
2013coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2014{
2015 SV *count_sv = AvARRAY (av)[0];
2016 IV count = SvIVX (count_sv);
2017
2018 count += adjust;
2019 SvIVX (count_sv) = count;
2020
2021 /* now wake up as many waiters as are expected to lock */
2022 while (count > 0 && AvFILLp (av) > 0)
2023 {
2024 SV *cb;
2025
2026 /* swap first two elements so we can shift a waiter */
2027 AvARRAY (av)[0] = AvARRAY (av)[1];
2028 AvARRAY (av)[1] = count_sv;
2029 cb = av_shift (av);
2030
2031 if (SvOBJECT (cb))
2032 api_ready (aTHX_ cb);
2033 else
2034 croak ("callbacks not yet supported");
2035
2036 SvREFCNT_dec (cb);
2037
2038 --count;
2039 }
2040}
2041
2042static void
2043coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2044{
2045 /* call $sem->adjust (0) to possibly wake up some other waiters */
2046 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2047}
2048
2049static int
2050slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2051{
2052 AV *av = (AV *)frame->data;
2053 SV *count_sv = AvARRAY (av)[0];
2054
2055 if (SvIVX (count_sv) > 0)
2056 {
2057 SvSTATE_current->on_destroy = 0;
2058 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2059 return 0;
2060 }
2061 else
2062 {
2063 int i;
2064 /* if we were woken up but can't down, we look through the whole */
2065 /* waiters list and only add us if we aren't in there already */
2066 /* this avoids some degenerate memory usage cases */
2067
2068 for (i = 1; i <= AvFILLp (av); ++i)
2069 if (AvARRAY (av)[i] == SvRV (coro_current))
2070 return 1;
2071
2072 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2073 return 1;
2074 }
2075}
2076
2077static void
2078slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2079{
2080 AV *av = (AV *)SvRV (arg [0]);
2081
2082 if (SvIVX (AvARRAY (av)[0]) > 0)
2083 {
2084 frame->data = (void *)av;
2085 frame->prepare = prepare_nop;
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088 else
2089 {
2090 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2091
2092 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2093 frame->prepare = prepare_schedule;
2094
2095 /* to avoid race conditions when a woken-up coro gets terminated */
2096 /* we arrange for a temporary on_destroy that calls adjust (0) */
2097 assert (!SvSTATE_current->on_destroy);//D
2098 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2099 }
2100
2101 frame->check = slf_check_semaphore_down;
2102
2103}
2104
2105/*****************************************************************************/
2106
2107#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2108
2109/* create a closure from XS, returns a code reference */
2110/* the arg can be accessed via GENSUB_ARG from the callback */
2111/* the callback must use dXSARGS/XSRETURN */
2112static SV *
2113gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2114{
2115 CV *cv = (CV *)NEWSV (0, 0);
2116
2117 sv_upgrade ((SV *)cv, SVt_PVCV);
2118
2119 CvANON_on (cv);
2120 CvISXSUB_on (cv);
2121 CvXSUB (cv) = xsub;
2122 GENSUB_ARG = arg;
2123
2124 return newRV_noinc ((SV *)cv);
2125}
2126
2127/*****************************************************************************/
1807 2128
1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2129MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1809 2130
1810PROTOTYPES: DISABLE 2131PROTOTYPES: DISABLE
1811 2132
1812BOOT: 2133BOOT:
1813{ 2134{
1814#ifdef USE_ITHREADS 2135#ifdef USE_ITHREADS
1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD 2136# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT; 2137 coro_thx = PERL_GET_CONTEXT;
1818# endif 2138# endif
1819#endif 2139#endif
1820 BOOT_PAGESIZE; 2140 BOOT_PAGESIZE;
… …
1841 main_top_env = PL_top_env; 2161 main_top_env = PL_top_env;
1842 2162
1843 while (main_top_env->je_prev) 2163 while (main_top_env->je_prev)
1844 main_top_env = main_top_env->je_prev; 2164 main_top_env = main_top_env->je_prev;
1845 2165
2166 {
2167 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2168
2169 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2170 hv_store_ent (PL_custom_op_names, slf,
2171 newSVpv ("coro_slf", 0), 0);
2172
2173 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2174 hv_store_ent (PL_custom_op_descs, slf,
2175 newSVpv ("coro schedule like function", 0), 0);
2176 }
2177
1846 coroapi.ver = CORO_API_VERSION; 2178 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION; 2179 coroapi.rev = CORO_API_REVISION;
2180
1848 coroapi.transfer = api_transfer; 2181 coroapi.transfer = api_transfer;
2182
2183 coroapi.sv_state = SvSTATE_;
2184 coroapi.execute_slf = api_execute_slf;
2185 coroapi.prepare_nop = prepare_nop;
2186 coroapi.prepare_schedule = prepare_schedule;
2187 coroapi.prepare_cede = prepare_cede;
2188 coroapi.prepare_cede_notself = prepare_cede_notself;
1849 2189
1850 { 2190 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2191 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852 2192
1853 if (!svp) croak ("Time::HiRes is required"); 2193 if (!svp) croak ("Time::HiRes is required");
… …
1886 av_push (coro->args, newSVsv (ST (i))); 2226 av_push (coro->args, newSVsv (ST (i)));
1887} 2227}
1888 OUTPUT: 2228 OUTPUT:
1889 RETVAL 2229 RETVAL
1890 2230
1891# these not obviously related functions are all rolled into the same xs
1892# function to increase chances that they all will call transfer with the same
1893# stack offset
1894void 2231void
1895_set_stacklevel (...) 2232_set_stacklevel (...)
1896 ALIAS: 2233 CODE:
1897 Coro::State::transfer = 1 2234 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1898 Coro::schedule = 2
1899 Coro::cede = 3
1900 Coro::cede_notself = 4
1901 CODE:
1902{
1903 struct transfer_args ta;
1904 2235
1905 PUTBACK; 2236void
1906 switch (ix) 2237transfer (...)
1907 { 2238 PROTOTYPE: $$
1908 case 0: 2239 CODE:
1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0))); 2240 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1910 break;
1911
1912 case 1:
1913 if (items != 2)
1914 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1915
1916 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1917 break;
1918
1919 case 2:
1920 prepare_schedule (aTHX_ &ta);
1921 break;
1922
1923 case 3:
1924 prepare_cede (aTHX_ &ta);
1925 break;
1926
1927 case 4:
1928 if (!prepare_cede_notself (aTHX_ &ta))
1929 XSRETURN_EMPTY;
1930
1931 break;
1932 }
1933 SPAGAIN;
1934
1935 BARRIER;
1936 PUTBACK;
1937 TRANSFER (ta, 0);
1938 SPAGAIN; /* might be the sp of a different coroutine now */
1939 /* be extra careful not to ever do anything after TRANSFER */
1940}
1941 2241
1942bool 2242bool
1943_destroy (SV *coro_sv) 2243_destroy (SV *coro_sv)
1944 CODE: 2244 CODE:
1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2245 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1952 CODE: 2252 CODE:
1953 _exit (code); 2253 _exit (code);
1954 2254
1955int 2255int
1956cctx_stacksize (int new_stacksize = 0) 2256cctx_stacksize (int new_stacksize = 0)
2257 PROTOTYPE: ;$
1957 CODE: 2258 CODE:
1958 RETVAL = cctx_stacksize; 2259 RETVAL = cctx_stacksize;
1959 if (new_stacksize) 2260 if (new_stacksize)
1960 { 2261 {
1961 cctx_stacksize = new_stacksize; 2262 cctx_stacksize = new_stacksize;
… …
1964 OUTPUT: 2265 OUTPUT:
1965 RETVAL 2266 RETVAL
1966 2267
1967int 2268int
1968cctx_max_idle (int max_idle = 0) 2269cctx_max_idle (int max_idle = 0)
2270 PROTOTYPE: ;$
1969 CODE: 2271 CODE:
1970 RETVAL = cctx_max_idle; 2272 RETVAL = cctx_max_idle;
1971 if (max_idle > 1) 2273 if (max_idle > 1)
1972 cctx_max_idle = max_idle; 2274 cctx_max_idle = max_idle;
1973 OUTPUT: 2275 OUTPUT:
1974 RETVAL 2276 RETVAL
1975 2277
1976int 2278int
1977cctx_count () 2279cctx_count ()
2280 PROTOTYPE:
1978 CODE: 2281 CODE:
1979 RETVAL = cctx_count; 2282 RETVAL = cctx_count;
1980 OUTPUT: 2283 OUTPUT:
1981 RETVAL 2284 RETVAL
1982 2285
1983int 2286int
1984cctx_idle () 2287cctx_idle ()
2288 PROTOTYPE:
1985 CODE: 2289 CODE:
1986 RETVAL = cctx_idle; 2290 RETVAL = cctx_idle;
1987 OUTPUT: 2291 OUTPUT:
1988 RETVAL 2292 RETVAL
1989 2293
1990void 2294void
1991list () 2295list ()
2296 PROTOTYPE:
1992 PPCODE: 2297 PPCODE:
1993{ 2298{
1994 struct coro *coro; 2299 struct coro *coro;
1995 for (coro = coro_first; coro; coro = coro->next) 2300 for (coro = coro_first; coro; coro = coro->next)
1996 if (coro->hv) 2301 if (coro->hv)
… …
2058 2363
2059void 2364void
2060throw (Coro::State self, SV *throw = &PL_sv_undef) 2365throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$ 2366 PROTOTYPE: $;$
2062 CODE: 2367 CODE:
2368{
2369 struct coro *current = SvSTATE_current;
2370 SV **throwp = self == current ? &coro_throw : &self->throw;
2063 SvREFCNT_dec (self->throw); 2371 SvREFCNT_dec (*throwp);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2372 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2373}
2065 2374
2066void 2375void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2376api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2377 PROTOTYPE: $;$
2378 C_ARGS: aTHX_ coro, flags
2068 2379
2069SV * 2380SV *
2070has_cctx (Coro::State coro) 2381has_cctx (Coro::State coro)
2071 PROTOTYPE: $ 2382 PROTOTYPE: $
2072 CODE: 2383 CODE:
… …
2096 OUTPUT: 2407 OUTPUT:
2097 RETVAL 2408 RETVAL
2098 2409
2099void 2410void
2100force_cctx () 2411force_cctx ()
2412 PROTOTYPE:
2101 CODE: 2413 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0; 2414 SvSTATE_current->cctx->idle_sp = 0;
2104 2415
2105void 2416void
2106swap_defsv (Coro::State self) 2417swap_defsv (Coro::State self)
2107 PROTOTYPE: $ 2418 PROTOTYPE: $
2108 ALIAS: 2419 ALIAS:
2109 swap_defav = 1 2420 swap_defav = 1
2110 CODE: 2421 CODE:
2111 if (!self->slot) 2422 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state"); 2423 croak ("cannot swap state with coroutine that has no saved state,");
2113 else 2424 else
2114 { 2425 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2426 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2427 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117 2428
… …
2142 2453
2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2454 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2144 coro_ready[i] = newAV (); 2455 coro_ready[i] = newAV ();
2145 2456
2146 { 2457 {
2147 SV *sv = perl_get_sv ("Coro::API", TRUE); 2458 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2149 2459
2150 coroapi.schedule = api_schedule; 2460 coroapi.schedule = api_schedule;
2151 coroapi.cede = api_cede; 2461 coroapi.cede = api_cede;
2152 coroapi.cede_notself = api_cede_notself; 2462 coroapi.cede_notself = api_cede_notself;
2153 coroapi.ready = api_ready; 2463 coroapi.ready = api_ready;
2154 coroapi.is_ready = api_is_ready; 2464 coroapi.is_ready = api_is_ready;
2155 coroapi.nready = &coro_nready; 2465 coroapi.nready = coro_nready;
2156 coroapi.current = coro_current; 2466 coroapi.current = coro_current;
2157 2467
2158 GCoroAPI = &coroapi; 2468 GCoroAPI = &coroapi;
2159 sv_setiv (sv, (IV)&coroapi); 2469 sv_setiv (sv, (IV)&coroapi);
2160 SvREADONLY_on (sv); 2470 SvREADONLY_on (sv);
2161 } 2471 }
2162} 2472}
2473
2474void
2475schedule (...)
2476 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2478
2479void
2480cede (...)
2481 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede);
2483
2484void
2485cede_notself (...)
2486 CODE:
2487 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2163 2488
2164void 2489void
2165_set_current (SV *current) 2490_set_current (SV *current)
2166 PROTOTYPE: $ 2491 PROTOTYPE: $
2167 CODE: 2492 CODE:
… …
2170 2495
2171void 2496void
2172_set_readyhook (SV *hook) 2497_set_readyhook (SV *hook)
2173 PROTOTYPE: $ 2498 PROTOTYPE: $
2174 CODE: 2499 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook); 2500 SvREFCNT_dec (coro_readyhook);
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2501 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178 UNLOCK;
2179 2502
2180int 2503int
2181prio (Coro::State coro, int newprio = 0) 2504prio (Coro::State coro, int newprio = 0)
2505 PROTOTYPE: $;$
2182 ALIAS: 2506 ALIAS:
2183 nice = 1 2507 nice = 1
2184 CODE: 2508 CODE:
2185{ 2509{
2186 RETVAL = coro->prio; 2510 RETVAL = coro->prio;
… …
2201 2525
2202SV * 2526SV *
2203ready (SV *self) 2527ready (SV *self)
2204 PROTOTYPE: $ 2528 PROTOTYPE: $
2205 CODE: 2529 CODE:
2206 RETVAL = boolSV (api_ready (self)); 2530 RETVAL = boolSV (api_ready (aTHX_ self));
2207 OUTPUT: 2531 OUTPUT:
2208 RETVAL 2532 RETVAL
2209 2533
2210int 2534int
2211nready (...) 2535nready (...)
… …
2218# for async_pool speedup 2542# for async_pool speedup
2219void 2543void
2220_pool_1 (SV *cb) 2544_pool_1 (SV *cb)
2221 CODE: 2545 CODE:
2222{ 2546{
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current); 2547 HV *hv = (HV *)SvRV (coro_current);
2548 struct coro *coro = SvSTATE_hv ((SV *)hv);
2225 AV *defav = GvAV (PL_defgv); 2549 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2550 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av; 2551 AV *invoke_av;
2228 int i, len; 2552 int i, len;
2229 2553
… …
2250 { 2574 {
2251 av_fill (defav, len - 1); 2575 av_fill (defav, len - 1);
2252 for (i = 0; i < len; ++i) 2576 for (i = 0; i < len; ++i)
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2577 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2254 } 2578 }
2255
2256 SvREFCNT_dec (invoke);
2257} 2579}
2258 2580
2259void 2581void
2260_pool_2 (SV *cb) 2582_pool_2 (SV *cb)
2261 CODE: 2583 CODE:
2262{ 2584{
2263 struct coro *coro = SvSTATE (coro_current); 2585 HV *hv = (HV *)SvRV (coro_current);
2586 struct coro *coro = SvSTATE_hv ((SV *)hv);
2264 2587
2265 sv_setsv (cb, &PL_sv_undef); 2588 sv_setsv (cb, &PL_sv_undef);
2266 2589
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2590 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0; 2591 coro->saved_deffh = 0;
… …
2275 SvREFCNT_dec (old); 2598 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n"); 2599 croak ("\3async_pool terminate\2\n");
2277 } 2600 }
2278 2601
2279 av_clear (GvAV (PL_defgv)); 2602 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2603 hv_store (hv, "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2604 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282 2605
2283 coro->prio = 0; 2606 coro->prio = 0;
2284 2607
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2608 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0); 2609 api_trace (aTHX_ coro_current, 0);
2287 2610
2288 av_push (av_async_pool, newSVsv (coro_current)); 2611 av_push (av_async_pool, newSVsv (coro_current));
2289} 2612}
2290
2291#if 0
2292
2293void
2294_generator_call (...)
2295 PROTOTYPE: @
2296 PPCODE:
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298 xxxx
2299 abort ();
2300
2301SV *
2302gensub (SV *sub, ...)
2303 PROTOTYPE: &;@
2304 CODE:
2305{
2306 struct coro *coro;
2307 MAGIC *mg;
2308 CV *xcv;
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2310 int i;
2311
2312 CvGV (ncv) = CvGV (cv);
2313 CvFILE (ncv) = CvFILE (cv);
2314
2315 Newz (0, coro, 1, struct coro);
2316 coro->args = newAV ();
2317 coro->flags = CF_NEW;
2318
2319 av_extend (coro->args, items - 1);
2320 for (i = 1; i < items; i++)
2321 av_push (coro->args, newSVsv (ST (i)));
2322
2323 CvISXSUB_on (ncv);
2324 CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328 CvXSUB (ncv) = CvXSUB (xcv);
2329 CvANON_on (ncv);
2330
2331 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2332 RETVAL = newRV_noinc ((SV *)ncv);
2333}
2334 OUTPUT:
2335 RETVAL
2336
2337#endif
2338 2613
2339 2614
2340MODULE = Coro::State PACKAGE = Coro::AIO 2615MODULE = Coro::State PACKAGE = Coro::AIO
2341 2616
2342void 2617void
2343_get_state (SV *self) 2618_get_state (SV *self)
2619 PROTOTYPE: $
2344 PPCODE: 2620 PPCODE:
2345{ 2621{
2346 AV *defav = GvAV (PL_defgv); 2622 AV *defav = GvAV (PL_defgv);
2347 AV *av = newAV (); 2623 AV *av = newAV ();
2348 int i; 2624 int i;
… …
2363 2639
2364 av_push (av, data_sv); 2640 av_push (av, data_sv);
2365 2641
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 2642 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2367 2643
2368 api_ready (self); 2644 api_ready (aTHX_ self);
2369} 2645}
2370 2646
2371void 2647void
2372_set_state (SV *state) 2648_set_state (SV *state)
2373 PROTOTYPE: $ 2649 PROTOTYPE: $
… …
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent 2667MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392 2668
2393BOOT: 2669BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2670 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395 2671
2396SV * 2672void
2397_schedule (...) 2673_schedule (...)
2398 PROTOTYPE: @
2399 CODE: 2674 CODE:
2400{ 2675{
2401 static int incede; 2676 static int incede;
2402 2677
2403 api_cede_notself (); 2678 api_cede_notself (aTHX);
2404 2679
2405 ++incede; 2680 ++incede;
2406 while (coro_nready >= incede && api_cede ()) 2681 while (coro_nready >= incede && api_cede (aTHX))
2407 ; 2682 ;
2408 2683
2409 sv_setsv (sv_activity, &PL_sv_undef); 2684 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede) 2685 if (coro_nready >= incede)
2411 { 2686 {
… …
2421 2696
2422MODULE = Coro::State PACKAGE = PerlIO::cede 2697MODULE = Coro::State PACKAGE = PerlIO::cede
2423 2698
2424BOOT: 2699BOOT:
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2700 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2701
2702MODULE = Coro::State PACKAGE = Coro::Semaphore
2703
2704SV *
2705new (SV *klass, SV *count_ = 0)
2706 CODE:
2707{
2708 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2709 AV *av = newAV ();
2710 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2711 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2712}
2713 OUTPUT:
2714 RETVAL
2715
2716SV *
2717count (SV *self)
2718 CODE:
2719 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2720 OUTPUT:
2721 RETVAL
2722
2723void
2724up (SV *self, int adjust = 1)
2725 ALIAS:
2726 adjust = 1
2727 CODE:
2728 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2729
2730void
2731down (SV *self)
2732 CODE:
2733 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2734
2735void
2736try (SV *self)
2737 PPCODE:
2738{
2739 AV *av = (AV *)SvRV (self);
2740 SV *count_sv = AvARRAY (av)[0];
2741 IV count = SvIVX (count_sv);
2742
2743 if (count > 0)
2744 {
2745 --count;
2746 SvIVX (count_sv) = count;
2747 XSRETURN_YES;
2748 }
2749 else
2750 XSRETURN_NO;
2751}
2752
2753void
2754waiters (SV *self)
2755 CODE:
2756{
2757 AV *av = (AV *)SvRV (self);
2758
2759 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2761 else
2762 {
2763 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1);
2765 for (i = 1; i <= AvFILLp (av); ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i]));
2767 }
2768}
2769

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