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Comparing Coro/Coro/State.xs (file contents):
Revision 1.253 by root, Fri Nov 7 20:12:26 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 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 */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
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
147static perl_mutex coro_lock; 147# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) 148static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 149# endif
154 150#endif
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164 151
165static double (*nvtime)(); /* so why doesn't it take void? */ 152static double (*nvtime)(); /* so why doesn't it take void? */
166 153
154static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 155static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 156static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 157static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 158static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 159static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 186};
199 187
200/* this is a structure representing a c-level coroutine */ 188/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 189typedef struct coro_cctx
190{
202 struct coro_cctx *next; 191 struct coro_cctx *next;
203 192
204 /* the stack */ 193 /* the stack */
205 void *sptr; 194 void *sptr;
206 size_t ssize; 195 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 198 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 199 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 200 JMPENV *top_env;
212 coro_context cctx; 201 coro_context cctx;
213 202
203 U32 gen;
214#if CORO_USE_VALGRIND 204#if CORO_USE_VALGRIND
215 int valgrind_id; 205 int valgrind_id;
216#endif 206#endif
217 unsigned char flags; 207 unsigned char flags;
218} coro_cctx; 208} coro_cctx;
… …
223 CF_NEW = 0x0004, /* has never been switched to */ 213 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
225}; 215};
226 216
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 217/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 218typedef struct
219{
229 SV *defsv; 220 SV *defsv;
230 AV *defav; 221 AV *defav;
231 SV *errsv; 222 SV *errsv;
232 SV *irsgv; 223 SV *irsgv;
233#define VAR(name,type) type name; 224#define VAR(name,type) type name;
… …
237 228
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 230
240/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
241struct coro { 232struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 234 coro_cctx *cctx;
244 235
245 /* process data */ 236 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 238 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
248 240
249 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
253 246
254 /* statistics */ 247 /* statistics */
255 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
256 249
257 /* coro process data */ 250 /* coro process data */
… …
265 struct coro *next, *prev; 258 struct coro *next, *prev;
266}; 259};
267 260
268typedef struct coro *Coro__State; 261typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 262typedef struct coro *Coro__State_or_hashref;
263
264/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
270 269
271/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
272 271
273#define PRIO_MAX 3 272#define PRIO_MAX 3
274#define PRIO_HIGH 1 273#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 277#define PRIO_MIN -4
279 278
280/* for Coro.pm */ 279/* for Coro.pm */
281static SV *coro_current; 280static SV *coro_current;
282static SV *coro_readyhook; 281static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready;
285static struct coro *coro_first; 283static struct coro *coro_first;
284#define coro_nready coroapi.nready
286 285
287/** lowlevel stuff **********************************************************/ 286/** lowlevel stuff **********************************************************/
288 287
289static SV * 288static SV *
290coro_get_sv (pTHX_ const char *name, int create) 289coro_get_sv (pTHX_ const char *name, int create)
… …
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 375
377 return 0; 376 return 0;
378} 377}
379 378
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext 379#define CORO_MAGIC_type_cv 26
381#define CORO_MAGIC_type_state PERL_MAGIC_ext 380#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 381
383static MGVTBL coro_cv_vtbl = { 382static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 383 0, 0, 0, 0,
385 coro_cv_free 384 coro_cv_free
386}; 385};
387 386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
388#define CORO_MAGIC(sv, type) \ 392#define CORO_MAGIC(sv, type) \
389 SvMAGIC (sv) \ 393 (expect_true (SvMAGIC (sv)) \
390 ? SvMAGIC (sv)->mg_type == type \ 394 ? CORO_MAGIC_NN (sv, type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0 395 : 0)
394 396
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
397 399
398static struct coro * 400INLINE struct coro *
399SvSTATE_ (pTHX_ SV *coro) 401SvSTATE_ (pTHX_ SV *coro)
400{ 402{
401 HV *stash; 403 HV *stash;
402 MAGIC *mg; 404 MAGIC *mg;
403 405
… …
418 mg = CORO_MAGIC_state (coro); 420 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr; 421 return (struct coro *)mg->mg_ptr;
420} 422}
421 423
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
423 429
424/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
425static void 431static void
426get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
427{ 433{
… …
494 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
495 } 501 }
496 502
497 PUTBACK; 503 PUTBACK;
498 } 504 }
505
506 slf_frame = c->slf_frame;
507 coro_throw = c->throw;
499} 508}
500 509
501static void 510static void
502save_perl (pTHX_ Coro__State c) 511save_perl (pTHX_ Coro__State c)
503{ 512{
513 c->throw = coro_throw;
514 c->slf_frame = slf_frame;
515
504 { 516 {
505 dSP; 517 dSP;
506 I32 cxix = cxstack_ix; 518 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 519 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 520 PERL_SI *top_si = PL_curstackinfo;
… …
575 #undef VAR 587 #undef VAR
576 } 588 }
577} 589}
578 590
579/* 591/*
580 * allocate various perl stacks. This is an exact copy 592 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 593 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 594 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 595 * not usually need a lot of stackspace.
584 */ 596 */
585#if CORO_PREFER_PERL_FUNCTIONS 597#if CORO_PREFER_PERL_FUNCTIONS
… …
787 799
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 801}
790 802
791static void 803static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{
806 /* kind of mega-hacky, but works */
807 ta->next = ta->prev = (struct coro *)ta;
808}
809
810static int
811slf_check_nop (pTHX_ struct CoroSLF *frame)
812{
813 return 0;
814}
815
816static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 817coro_setup (pTHX_ struct coro *coro)
793{ 818{
794 /* 819 /*
795 * emulate part of the perl startup here. 820 * emulate part of the perl startup here.
796 */ 821 */
… …
820 PL_rs = newSVsv (GvSV (irsgv)); 845 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 847
823 { 848 {
824 dSP; 849 dSP;
825 LOGOP myop; 850 UNOP myop;
826 851
827 Zero (&myop, 1, LOGOP); 852 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 853 myop.op_next = Nullop;
829 myop.op_flags = OPf_WANT_VOID; 854 myop.op_flags = OPf_WANT_VOID;
830 855
831 PUSHMARK (SP); 856 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN; 861 SPAGAIN;
837 } 862 }
838 863
839 /* this newly created coroutine might be run on an existing cctx which most 864 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 866 */
844 ENTER; 867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
869
870 coro_throw = coro->throw;
845} 871}
846 872
847static void 873static void
848coro_destruct (pTHX_ struct coro *coro) 874coro_destruct (pTHX_ struct coro *coro)
849{ 875{
… …
873 899
874 SvREFCNT_dec (PL_diehook); 900 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 901 SvREFCNT_dec (PL_warnhook);
876 902
877 SvREFCNT_dec (coro->saved_deffh); 903 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 904 SvREFCNT_dec (coro_throw);
879 905
880 coro_destruct_stacks (aTHX); 906 coro_destruct_stacks (aTHX);
881} 907}
882 908
883static void 909INLINE void
884free_coro_mortal (pTHX) 910free_coro_mortal (pTHX)
885{ 911{
886 if (expect_true (coro_mortal)) 912 if (expect_true (coro_mortal))
887 { 913 {
888 SvREFCNT_dec (coro_mortal); 914 SvREFCNT_dec (coro_mortal);
… …
893static int 919static int
894runops_trace (pTHX) 920runops_trace (pTHX)
895{ 921{
896 COP *oldcop = 0; 922 COP *oldcop = 0;
897 int oldcxix = -2; 923 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx; 925 coro_cctx *cctx = coro->cctx;
900 926
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 928 {
903 PERL_ASYNC_CHECK (); 929 PERL_ASYNC_CHECK ();
… …
1012 1038
1013 TAINT_NOT; 1039 TAINT_NOT;
1014 return 0; 1040 return 0;
1015} 1041}
1016 1042
1043static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1045{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0;
1048}
1049
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1050/* inject a fake call to Coro::State::_cctx_init into the execution */
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1051/* _cctx_init should be careful, as it could be called at almost any time */
1019/* during execution of a perl program */ 1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1020static void NOINLINE 1054static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1055cctx_prepare (pTHX_ coro_cctx *cctx)
1022{ 1056{
1023 dSP; 1057 dSP;
1024 LOGOP myop; 1058 UNOP myop;
1025 1059
1026 PL_top_env = &PL_start_env; 1060 PL_top_env = &PL_start_env;
1027 1061
1028 if (cctx->flags & CC_TRACE) 1062 if (cctx->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1063 PL_runops = runops_trace;
1030 1064
1031 Zero (&myop, 1, LOGOP); 1065 Zero (&myop, 1, UNOP);
1032 myop.op_next = PL_op; 1066 myop.op_next = PL_op;
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1034 1068
1035 PUSHMARK (SP); 1069 PUSHMARK (SP);
1036 EXTEND (SP, 2); 1070 EXTEND (SP, 2);
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1071 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1039 PUTBACK; 1073 PUTBACK;
1040 PL_op = (OP *)&myop; 1074 PL_op = (OP *)&myop;
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1042 SPAGAIN; 1076 SPAGAIN;
1043} 1077}
1044 1078
1079/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void
1081transfer_tail (pTHX)
1082{
1083 free_coro_mortal (aTHX);
1084}
1085
1045/* 1086/*
1046 * this is a _very_ stripped down perl interpreter ;) 1087 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1088 */
1048static void 1089static void
1049cctx_run (void *arg) 1090cctx_run (void *arg)
1050{ 1091{
1092#ifdef USE_ITHREADS
1093# if CORO_PTHREAD
1094 PERL_SET_CONTEXT (coro_thx);
1095# endif
1096#endif
1097 {
1051 dTHX; 1098 dTHX;
1052 1099
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1100 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1101 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1102 /* PL_nop = PL_nop->op_next */
1058 1103
1059 /* inject a fake subroutine call to cctx_init */ 1104 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1105 cctx_prepare (aTHX_ (coro_cctx *)arg);
1061 1106
1107 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX);
1109
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1110 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1111 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1112 perl_run (PL_curinterp);
1065 1113
1066 /* 1114 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1115 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1116 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1117 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1118 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1119 * coroutine as Coro has no such concept
1072 */ 1120 */
1073 PL_top_env = main_top_env; 1121 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 }
1075} 1124}
1076 1125
1077static coro_cctx * 1126static coro_cctx *
1078cctx_new () 1127cctx_new ()
1079{ 1128{
1080 coro_cctx *cctx; 1129 coro_cctx *cctx;
1130
1131 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx);
1133
1134 cctx->gen = cctx_gen;
1135 cctx->flags = 0;
1136 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1137
1138 return cctx;
1139}
1140
1141/* create a new cctx only suitable as source */
1142static coro_cctx *
1143cctx_new_empty ()
1144{
1145 coro_cctx *cctx = cctx_new ();
1146
1147 cctx->sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149
1150 return cctx;
1151}
1152
1153/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx *
1155cctx_new_run ()
1156{
1157 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1158 void *stack_start;
1082 size_t stack_size; 1159 size_t stack_size;
1083 1160
1084 ++cctx_count;
1085 Newz (0, cctx, 1, coro_cctx);
1086
1087#if HAVE_MMAP 1161#if HAVE_MMAP
1088 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1089 /* mmap supposedly does allocate-on-write for us */ 1163 /* mmap supposedly does allocate-on-write for us */
1090 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1091 1165
1092 if (cctx->sptr != (void *)-1) 1166 if (cctx->sptr != (void *)-1)
1093 { 1167 {
1094# if CORO_STACKGUARD 1168 #if CORO_STACKGUARD
1095 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1096# endif 1170 #endif
1097 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1098 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1099 cctx->flags |= CC_MAPPED; 1173 cctx->flags |= CC_MAPPED;
1100 } 1174 }
1101 else 1175 else
1102#endif 1176#endif
1103 { 1177 {
1104 cctx->ssize = coro_stacksize * (long)sizeof (long); 1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1105 New (0, cctx->sptr, coro_stacksize, long); 1179 New (0, cctx->sptr, cctx_stacksize, long);
1106 1180
1107 if (!cctx->sptr) 1181 if (!cctx->sptr)
1108 { 1182 {
1109 perror ("FATAL: unable to allocate stack for coroutine"); 1183 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1110 _exit (EXIT_FAILURE); 1184 _exit (EXIT_FAILURE);
1111 } 1185 }
1112 1186
1113 stack_start = cctx->sptr; 1187 stack_start = cctx->sptr;
1114 stack_size = cctx->ssize; 1188 stack_size = cctx->ssize;
1115 } 1189 }
1116 1190
1117 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1118 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1195 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1119 1196
1120 return cctx; 1197 return cctx;
1121} 1198}
1122 1199
… …
1130 coro_destroy (&cctx->cctx); 1207 coro_destroy (&cctx->cctx);
1131 1208
1132 /* coro_transfer creates new, empty cctx's */ 1209 /* coro_transfer creates new, empty cctx's */
1133 if (cctx->sptr) 1210 if (cctx->sptr)
1134 { 1211 {
1135#if CORO_USE_VALGRIND 1212 #if CORO_USE_VALGRIND
1136 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1137#endif 1214 #endif
1138 1215
1139#if HAVE_MMAP 1216#if HAVE_MMAP
1140 if (cctx->flags & CC_MAPPED) 1217 if (cctx->flags & CC_MAPPED)
1141 munmap (cctx->sptr, cctx->ssize); 1218 munmap (cctx->sptr, cctx->ssize);
1142 else 1219 else
… …
1146 1223
1147 Safefree (cctx); 1224 Safefree (cctx);
1148} 1225}
1149 1226
1150/* wether this cctx should be destructed */ 1227/* wether this cctx should be destructed */
1151#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1152 1229
1153static coro_cctx * 1230static coro_cctx *
1154cctx_get (pTHX) 1231cctx_get (pTHX)
1155{ 1232{
1156 while (expect_true (cctx_first)) 1233 while (expect_true (cctx_first))
… …
1163 return cctx; 1240 return cctx;
1164 1241
1165 cctx_destroy (cctx); 1242 cctx_destroy (cctx);
1166 } 1243 }
1167 1244
1168 return cctx_new (); 1245 return cctx_new_run ();
1169} 1246}
1170 1247
1171static void 1248static void
1172cctx_put (coro_cctx *cctx) 1249cctx_put (coro_cctx *cctx)
1173{ 1250{
1174 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1175 1252
1176 /* free another cctx if overlimit */ 1253 /* free another cctx if overlimit */
1177 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1254 if (expect_false (cctx_idle >= cctx_max_idle))
1178 { 1255 {
1179 coro_cctx *first = cctx_first; 1256 coro_cctx *first = cctx_first;
1180 cctx_first = first->next; 1257 cctx_first = first->next;
1181 --cctx_idle; 1258 --cctx_idle;
1182 1259
… …
1191/** coroutine switching *****************************************************/ 1268/** coroutine switching *****************************************************/
1192 1269
1193static void 1270static void
1194transfer_check (pTHX_ struct coro *prev, struct coro *next) 1271transfer_check (pTHX_ struct coro *prev, struct coro *next)
1195{ 1272{
1273 /* TODO: throwing up here is considered harmful */
1274
1196 if (expect_true (prev != next)) 1275 if (expect_true (prev != next))
1197 { 1276 {
1198 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1199 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1200 1279
1201 if (expect_false (next->flags & CF_RUNNING)) 1280 if (expect_false (next->flags & CF_RUNNING))
1202 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1203 1282
1204 if (expect_false (next->flags & CF_DESTROYED)) 1283 if (expect_false (next->flags & CF_DESTROYED))
1205 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1206 1285
1207#if !PERL_VERSION_ATLEAST (5,10,0) 1286#if !PERL_VERSION_ATLEAST (5,10,0)
1208 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1287 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1209 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1210#endif 1289#endif
1211 } 1290 }
1212} 1291}
1213 1292
1214/* always use the TRANSFER macro */ 1293/* always use the TRANSFER macro */
1215static void NOINLINE 1294static void NOINLINE /* noinline so we have a fixed stackframe */
1216transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1217{ 1296{
1218 dSTACKLEVEL; 1297 dSTACKLEVEL;
1219 1298
1220 /* sometimes transfer is only called to set idle_sp */ 1299 /* sometimes transfer is only called to set idle_sp */
1221 if (expect_false (!next)) 1300 if (expect_false (!next))
1222 { 1301 {
1223 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1224 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1225 } 1304 }
1226 else if (expect_true (prev != next)) 1305 else if (expect_true (prev != next))
1227 { 1306 {
1228 static volatile int has_throw;
1229 coro_cctx *prev__cctx; 1307 coro_cctx *prev__cctx;
1230 1308
1231 if (expect_false (prev->flags & CF_NEW)) 1309 if (expect_false (prev->flags & CF_NEW))
1232 { 1310 {
1233 /* create a new empty/source context */ 1311 /* create a new empty/source context */
1234 ++cctx_count; 1312 prev->cctx = cctx_new_empty ();
1235 New (0, prev->cctx, 1, coro_cctx);
1236 prev->cctx->sptr = 0;
1237 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1238
1239 prev->flags &= ~CF_NEW; 1313 prev->flags &= ~CF_NEW;
1240 prev->flags |= CF_RUNNING; 1314 prev->flags |= CF_RUNNING;
1241 } 1315 }
1242 1316
1243 prev->flags &= ~CF_RUNNING; 1317 prev->flags &= ~CF_RUNNING;
1244 next->flags |= CF_RUNNING; 1318 next->flags |= CF_RUNNING;
1245
1246 LOCK;
1247 1319
1248 /* first get rid of the old state */ 1320 /* first get rid of the old state */
1249 save_perl (aTHX_ prev); 1321 save_perl (aTHX_ prev);
1250 1322
1251 if (expect_false (next->flags & CF_NEW)) 1323 if (expect_false (next->flags & CF_NEW))
… …
1258 else 1330 else
1259 load_perl (aTHX_ next); 1331 load_perl (aTHX_ next);
1260 1332
1261 prev__cctx = prev->cctx; 1333 prev__cctx = prev->cctx;
1262 1334
1263 /* possibly "free" the cctx */ 1335 /* possibly untie and reuse the cctx */
1264 if (expect_true ( 1336 if (expect_true (
1265 prev__cctx->idle_sp == STACKLEVEL 1337 prev__cctx->idle_sp == (void *)stacklevel
1266 && !(prev__cctx->flags & CC_TRACE) 1338 && !(prev__cctx->flags & CC_TRACE)
1267 && !force_cctx 1339 && !force_cctx
1268 )) 1340 ))
1269 { 1341 {
1270 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1271 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1272 1344
1273 prev->cctx = 0; 1345 prev->cctx = 0;
1274 1346
1275 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1276 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1283 1355
1284 ++next->usecount; 1356 ++next->usecount;
1285 1357
1286 if (expect_true (!next->cctx)) 1358 if (expect_true (!next->cctx))
1287 next->cctx = cctx_get (aTHX); 1359 next->cctx = cctx_get (aTHX);
1288
1289 has_throw = !!next->throw;
1290 1360
1291 if (expect_false (prev__cctx != next->cctx)) 1361 if (expect_false (prev__cctx != next->cctx))
1292 { 1362 {
1293 prev__cctx->top_env = PL_top_env; 1363 prev__cctx->top_env = PL_top_env;
1294 PL_top_env = next->cctx->top_env; 1364 PL_top_env = next->cctx->top_env;
1295 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1296 } 1366 }
1297 1367
1298 free_coro_mortal (aTHX); 1368 transfer_tail (aTHX);
1299 UNLOCK;
1300
1301 if (expect_false (has_throw))
1302 {
1303 struct coro *coro = SvSTATE (coro_current);
1304
1305 if (coro->throw)
1306 {
1307 SV *exception = coro->throw;
1308 coro->throw = 0;
1309 sv_setsv (ERRSV, exception);
1310 croak (0);
1311 }
1312 }
1313 } 1369 }
1314} 1370}
1315
1316struct transfer_args
1317{
1318 struct coro *prev, *next;
1319};
1320 1371
1321#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1372#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1322#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1323 1374
1324/** high level stuff ********************************************************/ 1375/** high level stuff ********************************************************/
… …
1326static int 1377static int
1327coro_state_destroy (pTHX_ struct coro *coro) 1378coro_state_destroy (pTHX_ struct coro *coro)
1328{ 1379{
1329 if (coro->flags & CF_DESTROYED) 1380 if (coro->flags & CF_DESTROYED)
1330 return 0; 1381 return 0;
1382
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro);
1331 1385
1332 coro->flags |= CF_DESTROYED; 1386 coro->flags |= CF_DESTROYED;
1333 1387
1334 if (coro->flags & CF_READY) 1388 if (coro->flags & CF_READY)
1335 { 1389 {
1336 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1390 /* reduce nready, as destroying a ready coro effectively unreadies it */
1337 /* alternative: look through all ready queues and remove the coro */ 1391 /* alternative: look through all ready queues and remove the coro */
1338 LOCK;
1339 --coro_nready; 1392 --coro_nready;
1340 UNLOCK;
1341 } 1393 }
1342 else 1394 else
1343 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1344 1396
1345 if (coro->mainstack && coro->mainstack != main_mainstack) 1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1346 { 1398 {
1347 struct coro temp; 1399 struct coro temp;
1348 1400
1349 if (coro->flags & CF_RUNNING) 1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1350 croak ("FATAL: tried to destroy currently running coroutine");
1351 1402
1352 save_perl (aTHX_ &temp); 1403 save_perl (aTHX_ &temp);
1353 load_perl (aTHX_ coro); 1404 load_perl (aTHX_ coro);
1354 1405
1355 coro_destruct (aTHX_ coro); 1406 coro_destruct (aTHX_ coro);
… …
1406# define MGf_DUP 0 1457# define MGf_DUP 0
1407#endif 1458#endif
1408}; 1459};
1409 1460
1410static void 1461static void
1411prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1462prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1412{ 1463{
1413 ta->prev = SvSTATE (prev_sv); 1464 ta->prev = SvSTATE (prev_sv);
1414 ta->next = SvSTATE (next_sv); 1465 ta->next = SvSTATE (next_sv);
1415 TRANSFER_CHECK (*ta); 1466 TRANSFER_CHECK (*ta);
1416} 1467}
1417 1468
1418static void 1469static void
1419api_transfer (SV *prev_sv, SV *next_sv) 1470api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1420{ 1471{
1421 dTHX;
1422 struct transfer_args ta; 1472 struct coro_transfer_args ta;
1423 1473
1424 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1474 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1425 TRANSFER (ta, 1); 1475 TRANSFER (ta, 1);
1426} 1476}
1427 1477
1428/** Coro ********************************************************************/ 1478/** Coro ********************************************************************/
1429 1479
1430static void 1480INLINE void
1431coro_enq (pTHX_ SV *coro_sv) 1481coro_enq (pTHX_ struct coro *coro)
1432{ 1482{
1433 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1434} 1484}
1435 1485
1436static SV * 1486INLINE SV *
1437coro_deq (pTHX) 1487coro_deq (pTHX)
1438{ 1488{
1439 int prio; 1489 int prio;
1440 1490
1441 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1444 1494
1445 return 0; 1495 return 0;
1446} 1496}
1447 1497
1448static int 1498static int
1449api_ready (SV *coro_sv) 1499api_ready (pTHX_ SV *coro_sv)
1450{ 1500{
1451 dTHX;
1452 struct coro *coro; 1501 struct coro *coro;
1453 SV *sv_hook; 1502 SV *sv_hook;
1454 void (*xs_hook)(void); 1503 void (*xs_hook)(void);
1455 1504
1456 if (SvROK (coro_sv)) 1505 if (SvROK (coro_sv))
… …
1461 if (coro->flags & CF_READY) 1510 if (coro->flags & CF_READY)
1462 return 0; 1511 return 0;
1463 1512
1464 coro->flags |= CF_READY; 1513 coro->flags |= CF_READY;
1465 1514
1466 LOCK;
1467
1468 sv_hook = coro_nready ? 0 : coro_readyhook; 1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1469 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1470 1517
1471 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1518 coro_enq (aTHX_ coro);
1472 ++coro_nready; 1519 ++coro_nready;
1473 1520
1474 UNLOCK;
1475
1476 if (sv_hook) 1521 if (sv_hook)
1477 { 1522 {
1478 dSP; 1523 dSP;
1479 1524
1480 ENTER; 1525 ENTER;
… …
1494 1539
1495 return 1; 1540 return 1;
1496} 1541}
1497 1542
1498static int 1543static int
1499api_is_ready (SV *coro_sv) 1544api_is_ready (pTHX_ SV *coro_sv)
1500{ 1545{
1501 dTHX;
1502 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1546 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1503} 1547}
1504 1548
1505static void 1549INLINE void
1506prepare_schedule (pTHX_ struct transfer_args *ta) 1550prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1507{ 1551{
1508 SV *prev_sv, *next_sv; 1552 SV *prev_sv, *next_sv;
1509 1553
1510 for (;;) 1554 for (;;)
1511 { 1555 {
1512 LOCK;
1513 next_sv = coro_deq (aTHX); 1556 next_sv = coro_deq (aTHX);
1514 1557
1515 /* nothing to schedule: call the idle handler */ 1558 /* nothing to schedule: call the idle handler */
1516 if (expect_false (!next_sv)) 1559 if (expect_false (!next_sv))
1517 { 1560 {
1518 dSP; 1561 dSP;
1519 UNLOCK;
1520 1562
1521 ENTER; 1563 ENTER;
1522 SAVETMPS; 1564 SAVETMPS;
1523 1565
1524 PUSHMARK (SP); 1566 PUSHMARK (SP);
… …
1529 FREETMPS; 1571 FREETMPS;
1530 LEAVE; 1572 LEAVE;
1531 continue; 1573 continue;
1532 } 1574 }
1533 1575
1534 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE_hv (next_sv);
1535 1577
1536 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1537 if (expect_false (ta->next->flags & CF_DESTROYED)) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1538 { 1580 {
1539 UNLOCK;
1540 SvREFCNT_dec (next_sv); 1581 SvREFCNT_dec (next_sv);
1541 /* coro_nready is already taken care of by destroy */ 1582 /* coro_nready has already been taken care of by destroy */
1542 continue; 1583 continue;
1543 } 1584 }
1544 1585
1545 --coro_nready; 1586 --coro_nready;
1546 UNLOCK;
1547 break; 1587 break;
1548 } 1588 }
1549 1589
1550 /* free this only after the transfer */ 1590 /* free this only after the transfer */
1551 prev_sv = SvRV (coro_current); 1591 prev_sv = SvRV (coro_current);
1552 ta->prev = SvSTATE (prev_sv); 1592 ta->prev = SvSTATE_hv (prev_sv);
1553 TRANSFER_CHECK (*ta); 1593 TRANSFER_CHECK (*ta);
1554 assert (ta->next->flags & CF_READY); 1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1555 ta->next->flags &= ~CF_READY; 1595 ta->next->flags &= ~CF_READY;
1556 SvRV_set (coro_current, next_sv); 1596 SvRV_set (coro_current, next_sv);
1557 1597
1558 LOCK;
1559 free_coro_mortal (aTHX); 1598 free_coro_mortal (aTHX);
1560 coro_mortal = prev_sv; 1599 coro_mortal = prev_sv;
1561 UNLOCK;
1562} 1600}
1563 1601
1564static void 1602INLINE void
1565prepare_cede (pTHX_ struct transfer_args *ta) 1603prepare_cede (pTHX_ struct coro_transfer_args *ta)
1566{ 1604{
1567 api_ready (coro_current); 1605 api_ready (aTHX_ coro_current);
1568 prepare_schedule (aTHX_ ta); 1606 prepare_schedule (aTHX_ ta);
1569} 1607}
1570 1608
1609INLINE void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{
1612 SV *prev = SvRV (coro_current);
1613
1614 if (coro_nready)
1615 {
1616 prepare_schedule (aTHX_ ta);
1617 api_ready (aTHX_ prev);
1618 }
1619 else
1620 prepare_nop (aTHX_ ta);
1621}
1622
1623static void
1624api_schedule (pTHX)
1625{
1626 struct coro_transfer_args ta;
1627
1628 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1);
1630}
1631
1571static int 1632static int
1572prepare_cede_notself (pTHX_ struct transfer_args *ta) 1633api_cede (pTHX)
1573{ 1634{
1574 if (coro_nready) 1635 struct coro_transfer_args ta;
1575 { 1636
1576 SV *prev = SvRV (coro_current);
1577 prepare_schedule (aTHX_ ta); 1637 prepare_cede (aTHX_ &ta);
1578 api_ready (prev); 1638
1639 if (expect_true (ta.prev != ta.next))
1640 {
1641 TRANSFER (ta, 1);
1579 return 1; 1642 return 1;
1580 } 1643 }
1581 else 1644 else
1582 return 0; 1645 return 0;
1583} 1646}
1584 1647
1585static void
1586api_schedule (void)
1587{
1588 dTHX;
1589 struct transfer_args ta;
1590
1591 prepare_schedule (aTHX_ &ta);
1592 TRANSFER (ta, 1);
1593}
1594
1595static int 1648static int
1596api_cede (void) 1649api_cede_notself (pTHX)
1597{ 1650{
1598 dTHX; 1651 if (coro_nready)
1652 {
1599 struct transfer_args ta; 1653 struct coro_transfer_args ta;
1600 1654
1601 prepare_cede (aTHX_ &ta); 1655 prepare_cede_notself (aTHX_ &ta);
1602
1603 if (expect_true (ta.prev != ta.next))
1604 {
1605 TRANSFER (ta, 1); 1656 TRANSFER (ta, 1);
1606 return 1; 1657 return 1;
1607 } 1658 }
1608 else 1659 else
1609 return 0; 1660 return 0;
1610} 1661}
1611 1662
1612static int 1663static void
1613api_cede_notself (void)
1614{
1615 dTHX;
1616 struct transfer_args ta;
1617
1618 if (prepare_cede_notself (aTHX_ &ta))
1619 {
1620 TRANSFER (ta, 1);
1621 return 1;
1622 }
1623 else
1624 return 0;
1625}
1626
1627static void
1628api_trace (SV *coro_sv, int flags) 1664api_trace (pTHX_ SV *coro_sv, int flags)
1629{ 1665{
1630 dTHX;
1631 struct coro *coro = SvSTATE (coro_sv); 1666 struct coro *coro = SvSTATE (coro_sv);
1632 1667
1633 if (flags & CC_TRACE) 1668 if (flags & CC_TRACE)
1634 { 1669 {
1635 if (!coro->cctx) 1670 if (!coro->cctx)
1636 coro->cctx = cctx_new (); 1671 coro->cctx = cctx_new_run ();
1637 else if (!(coro->cctx->flags & CC_TRACE)) 1672 else if (!(coro->cctx->flags & CC_TRACE))
1638 croak ("cannot enable tracing on coroutine with custom stack"); 1673 croak ("cannot enable tracing on coroutine with custom stack,");
1639 1674
1640 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1641 } 1676 }
1642 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1643 { 1678 {
… …
1648 else 1683 else
1649 coro->slot->runops = RUNOPS_DEFAULT; 1684 coro->slot->runops = RUNOPS_DEFAULT;
1650 } 1685 }
1651} 1686}
1652 1687
1688/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */
1690
1691static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1692static const CV *slf_cv;
1693static SV **slf_argv;
1694static int slf_argc, slf_arga; /* count, allocated */
1695static I32 slf_ax; /* top of stack, for restore */
1696
1697/* this restores the stack in the case we patched the entersub, to */
1698/* recreate the stack frame as perl will on following calls */
1699/* since entersub cleared the stack */
1700static OP *
1701pp_restore (pTHX)
1702{
1703 int i;
1704 SV **SP = PL_stack_base + slf_ax;
1705
1706 PUSHMARK (SP);
1707
1708 EXTEND (SP, slf_argc + 1);
1709
1710 for (i = 0; i < slf_argc; ++i)
1711 PUSHs (sv_2mortal (slf_argv [i]));
1712
1713 PUSHs ((SV *)CvGV (slf_cv));
1714
1715 RETURNOP (slf_restore.op_first);
1716}
1717
1653static int 1718static void
1654coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1655{ 1720{
1656 AV *padlist; 1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1657 AV *av = (AV *)mg->mg_obj;
1658
1659 abort ();
1660
1661 return 0;
1662} 1722}
1663 1723
1664static MGVTBL coro_gensub_vtbl = { 1724static void
1665 0, 0, 0, 0, 1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1666 coro_gensub_free 1726{
1667}; 1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{
1737 SV **arg = (SV **)slf_frame.data;
1738
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1740}
1741
1742static void
1743slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1744{
1745 if (items != 2)
1746 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1747
1748 frame->prepare = slf_prepare_transfer;
1749 frame->check = slf_check_nop;
1750 frame->data = (void *)arg; /* let's hope it will stay valid */
1751}
1752
1753static void
1754slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1755{
1756 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop;
1758}
1759
1760static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{
1763 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop;
1765}
1766
1767static void
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{
1770 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop;
1772}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776
1777/*
1778 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same
1780 * stack offset
1781 * SLF stands for "schedule-like-function".
1782 */
1783static OP *
1784pp_slf (pTHX)
1785{
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787
1788 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare))
1792 {
1793 /* first iteration */
1794 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */
1797 SV *gv = *sp;
1798
1799 /* do a quick consistency check on the "function" object, and if it isn't */
1800 /* for us, divert to the real entersub */
1801 if (SvTYPE (gv) != SVt_PVGV
1802 || !GvCV (gv)
1803 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1804 return PL_ppaddr[OP_ENTERSUB](aTHX);
1805
1806 if (!(PL_op->op_flags & OPf_STACKED))
1807 {
1808 /* ampersand-form of call, use @_ instead of stack */
1809 AV *av = GvAV (PL_defgv);
1810 arg = AvARRAY (av);
1811 items = AvFILLp (av) + 1;
1812 }
1813
1814 /* now call the init function, which needs to set up slf_frame */
1815 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1816 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1817
1818 /* pop args */
1819 SP = PL_stack_base + POPMARK;
1820
1821 PUTBACK;
1822 }
1823
1824 /* now that we have a slf_frame, interpret it! */
1825 /* we use a callback system not to make the code needlessly */
1826 /* complicated, but so we can run multiple perl coros from one cctx */
1827
1828 do
1829 {
1830 struct coro_transfer_args ta;
1831
1832 slf_frame.prepare (aTHX_ &ta);
1833 TRANSFER (ta, 0);
1834
1835 checkmark = PL_stack_sp - PL_stack_base;
1836 }
1837 while (slf_frame.check (aTHX_ &slf_frame));
1838
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */
1860 if (expect_false (coro_throw))
1861 {
1862 SV *exception = sv_2mortal (coro_throw);
1863
1864 coro_throw = 0;
1865 sv_setsv (ERRSV, exception);
1866 croak (0);
1867 }
1868
1869 return NORMAL;
1870}
1871
1872static void
1873api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1874{
1875 int i;
1876 SV **arg = PL_stack_base + ax;
1877 int items = PL_stack_sp - arg + 1;
1878
1879 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1880
1881 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1882 && PL_op->op_ppaddr != pp_slf)
1883 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1884
1885 CvFLAGS (cv) |= CVf_SLF;
1886 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1887 slf_cv = cv;
1888
1889 /* we patch the op, and then re-run the whole call */
1890 /* we have to put the same argument on the stack for this to work */
1891 /* and this will be done by pp_restore */
1892 slf_restore.op_next = (OP *)&slf_restore;
1893 slf_restore.op_type = OP_CUSTOM;
1894 slf_restore.op_ppaddr = pp_restore;
1895 slf_restore.op_first = PL_op;
1896
1897 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1898
1899 if (PL_op->op_flags & OPf_STACKED)
1900 {
1901 if (items > slf_arga)
1902 {
1903 slf_arga = items;
1904 free (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *));
1906 }
1907
1908 slf_argc = items;
1909
1910 for (i = 0; i < items; ++i)
1911 slf_argv [i] = SvREFCNT_inc (arg [i]);
1912 }
1913 else
1914 slf_argc = 0;
1915
1916 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1918
1919 PL_op = (OP *)&slf_restore;
1920}
1668 1921
1669/*****************************************************************************/ 1922/*****************************************************************************/
1670/* PerlIO::cede */ 1923/* PerlIO::cede */
1671 1924
1672typedef struct 1925typedef struct
… …
1700 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1953 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1701 double now = nvtime (); 1954 double now = nvtime ();
1702 1955
1703 if (now >= self->next) 1956 if (now >= self->next)
1704 { 1957 {
1705 api_cede (); 1958 api_cede (aTHX);
1706 self->next = now + self->every; 1959 self->next = now + self->every;
1707 } 1960 }
1708 1961
1709 return PerlIOBuf_flush (aTHX_ f); 1962 return PerlIOBuf_flush (aTHX_ f);
1710} 1963}
… …
1739 PerlIOBuf_get_ptr, 1992 PerlIOBuf_get_ptr,
1740 PerlIOBuf_get_cnt, 1993 PerlIOBuf_get_cnt,
1741 PerlIOBuf_set_ptrcnt, 1994 PerlIOBuf_set_ptrcnt,
1742}; 1995};
1743 1996
1997/*****************************************************************************/
1998/* Coro::Semaphore */
1999
2000static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{
2003 SV *count_sv = AvARRAY (av)[0];
2004 IV count = SvIVX (count_sv);
2005
2006 count += adjust;
2007 SvIVX (count_sv) = count;
2008
2009 /* now wake up as many waiters as are expected to lock */
2010 while (count > 0 && AvFILLp (av) > 0)
2011 {
2012 SV *cb;
2013
2014 /* swap first two elements so we can shift a waiter */
2015 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av);
2018
2019 if (SvOBJECT (cb))
2020 api_ready (aTHX_ cb);
2021 else
2022 croak ("callbacks not yet supported");
2023
2024 SvREFCNT_dec (cb);
2025
2026 --count;
2027 }
2028}
2029
2030static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2032{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2035}
2036
2037static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2039{
2040 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0];
2042
2043 if (SvIVX (count_sv) > 0)
2044 {
2045 SvSTATE_current->on_destroy = 0;
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2047 return 0;
2048 }
2049 else
2050 {
2051 int i;
2052 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */
2055
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current))
2058 return 1;
2059
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2061 return 1;
2062 }
2063}
2064
2065static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{
2068 AV *av = (AV *)SvRV (arg [0]);
2069
2070 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 {
2072 frame->data = (void *)av;
2073 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 }
2076 else
2077 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088
2089 frame->check = slf_check_semaphore_down;
2090
2091}
2092
2093/*****************************************************************************/
2094/* gensub: simple closure generation utility */
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{
2104 CV *cv = (CV *)newSV (0);
2105
2106 sv_upgrade ((SV *)cv, SVt_PVCV);
2107
2108 CvANON_on (cv);
2109 CvISXSUB_on (cv);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112
2113 return newRV_noinc ((SV *)cv);
2114}
2115
2116/*****************************************************************************/
2117/* Coro::AIO */
2118
2119#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2120
2121/* helper storage struct */
2122struct io_state
2123{
2124 int errorno;
2125 I32 laststype; /* U16 in 5.10.0 */
2126 int laststatval;
2127 Stat_t statcache;
2128};
2129
2130static void
2131coro_aio_callback (pTHX_ CV *cv)
2132{
2133 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state));
2137
2138 av_extend (state, items);
2139
2140 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv);
2143
2144 {
2145 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2146
2147 data->errorno = errno;
2148 data->laststype = PL_laststype;
2149 data->laststatval = PL_laststatval;
2150 data->statcache = PL_statcache;
2151 }
2152
2153 /* now build the result vector out of all the parameters and the data_sv */
2154 {
2155 int i;
2156
2157 for (i = 0; i < items; ++i)
2158 av_push (state, SvREFCNT_inc_NN (ST (i)));
2159 }
2160
2161 av_push (state, data_sv);
2162
2163 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro);
2165 SvREFCNT_dec ((AV *)state);
2166}
2167
2168static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{
2171 AV *state = (AV *)frame->data;
2172
2173 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1;
2176
2177 /* restore status */
2178 {
2179 SV *data_sv = av_pop (state);
2180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2181
2182 errno = data->errorno;
2183 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache;
2186
2187 SvREFCNT_dec (data_sv);
2188 }
2189
2190 /* push result values */
2191 {
2192 dSP;
2193 int i;
2194
2195 EXTEND (SP, AvFILLp (state) + 1);
2196 for (i = 0; i <= AvFILLp (state); ++i)
2197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2198
2199 PUTBACK;
2200 }
2201
2202 return 0;
2203}
2204
2205static void
2206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2209 SV *coro_hv = SvRV (coro_current);
2210 struct coro *coro = SvSTATE_hv (coro_hv);
2211
2212 /* put our coroutine id on the state arg */
2213 av_push (state, SvREFCNT_inc_NN (coro_hv));
2214
2215 /* first see whether we have a non-zero priority and set it as AIO prio */
2216 if (coro->prio)
2217 {
2218 dSP;
2219
2220 static SV *prio_cv;
2221 static SV *prio_sv;
2222
2223 if (expect_false (!prio_cv))
2224 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0);
2227 }
2228
2229 PUSHMARK (SP);
2230 sv_setiv (prio_sv, coro->prio);
2231 XPUSHs (prio_sv);
2232
2233 PUTBACK;
2234 call_sv (prio_cv, G_VOID | G_DISCARD);
2235 }
2236
2237 /* now call the original request */
2238 {
2239 dSP;
2240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2241 int i;
2242
2243 PUSHMARK (SP);
2244
2245 /* first push all args to the stack */
2246 EXTEND (SP, items + 1);
2247
2248 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]);
2250
2251 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253
2254 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 }
2258
2259 /* now that the requets is going, we loop toll we have a result */
2260 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req;
2263}
2264
2265static void
2266coro_aio_req_xs (pTHX_ CV *cv)
2267{
2268 dVAR;
2269 dXSARGS;
2270
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272
2273 XSRETURN_EMPTY;
2274}
2275
2276/*****************************************************************************/
1744 2277
1745MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1746 2279
1747PROTOTYPES: DISABLE 2280PROTOTYPES: DISABLE
1748 2281
1749BOOT: 2282BOOT:
1750{ 2283{
1751#ifdef USE_ITHREADS 2284#ifdef USE_ITHREADS
1752 MUTEX_INIT (&coro_lock); 2285# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT;
2287# endif
1753#endif 2288#endif
1754 BOOT_PAGESIZE; 2289 BOOT_PAGESIZE;
1755 2290
1756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1775 main_top_env = PL_top_env; 2310 main_top_env = PL_top_env;
1776 2311
1777 while (main_top_env->je_prev) 2312 while (main_top_env->je_prev)
1778 main_top_env = main_top_env->je_prev; 2313 main_top_env = main_top_env->je_prev;
1779 2314
2315 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf,
2320 newSVpv ("coro_slf", 0), 0);
2321
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf,
2324 newSVpv ("coro schedule like function", 0), 0);
2325 }
2326
1780 coroapi.ver = CORO_API_VERSION; 2327 coroapi.ver = CORO_API_VERSION;
1781 coroapi.rev = CORO_API_REVISION; 2328 coroapi.rev = CORO_API_REVISION;
2329
1782 coroapi.transfer = api_transfer; 2330 coroapi.transfer = api_transfer;
2331
2332 coroapi.sv_state = SvSTATE_;
2333 coroapi.execute_slf = api_execute_slf;
2334 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself;
1783 2338
1784 { 2339 {
1785 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1786 2341
1787 if (!svp) croak ("Time::HiRes is required"); 2342 if (!svp) croak ("Time::HiRes is required");
… …
1820 av_push (coro->args, newSVsv (ST (i))); 2375 av_push (coro->args, newSVsv (ST (i)));
1821} 2376}
1822 OUTPUT: 2377 OUTPUT:
1823 RETVAL 2378 RETVAL
1824 2379
1825# these not obviously related functions are all rolled into the same xs
1826# function to increase chances that they all will call transfer with the same
1827# stack offset
1828void 2380void
1829_set_stacklevel (...) 2381_set_stacklevel (...)
1830 ALIAS: 2382 CODE:
1831 Coro::State::transfer = 1 2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1832 Coro::schedule = 2
1833 Coro::cede = 3
1834 Coro::cede_notself = 4
1835 CODE:
1836{
1837 struct transfer_args ta;
1838 2384
1839 PUTBACK; 2385void
1840 switch (ix) 2386transfer (...)
1841 { 2387 PROTOTYPE: $$
1842 case 0: 2388 CODE:
1843 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2389 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1844 ta.next = 0;
1845 break;
1846
1847 case 1:
1848 if (items != 2)
1849 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1850
1851 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1852 break;
1853
1854 case 2:
1855 prepare_schedule (aTHX_ &ta);
1856 break;
1857
1858 case 3:
1859 prepare_cede (aTHX_ &ta);
1860 break;
1861
1862 case 4:
1863 if (!prepare_cede_notself (aTHX_ &ta))
1864 XSRETURN_EMPTY;
1865
1866 break;
1867 }
1868 SPAGAIN;
1869
1870 BARRIER;
1871 PUTBACK;
1872 TRANSFER (ta, 0);
1873 SPAGAIN; /* might be the sp of a different coroutine now */
1874 /* be extra careful not to ever do anything after TRANSFER */
1875}
1876 2390
1877bool 2391bool
1878_destroy (SV *coro_sv) 2392_destroy (SV *coro_sv)
1879 CODE: 2393 CODE:
1880 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1887 CODE: 2401 CODE:
1888 _exit (code); 2402 _exit (code);
1889 2403
1890int 2404int
1891cctx_stacksize (int new_stacksize = 0) 2405cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$
1892 CODE: 2407 CODE:
1893 RETVAL = coro_stacksize; 2408 RETVAL = cctx_stacksize;
1894 if (new_stacksize) 2409 if (new_stacksize)
2410 {
1895 coro_stacksize = new_stacksize; 2411 cctx_stacksize = new_stacksize;
2412 ++cctx_gen;
2413 }
1896 OUTPUT: 2414 OUTPUT:
1897 RETVAL 2415 RETVAL
1898 2416
1899int 2417int
2418cctx_max_idle (int max_idle = 0)
2419 PROTOTYPE: ;$
2420 CODE:
2421 RETVAL = cctx_max_idle;
2422 if (max_idle > 1)
2423 cctx_max_idle = max_idle;
2424 OUTPUT:
2425 RETVAL
2426
2427int
1900cctx_count () 2428cctx_count ()
2429 PROTOTYPE:
1901 CODE: 2430 CODE:
1902 RETVAL = cctx_count; 2431 RETVAL = cctx_count;
1903 OUTPUT: 2432 OUTPUT:
1904 RETVAL 2433 RETVAL
1905 2434
1906int 2435int
1907cctx_idle () 2436cctx_idle ()
2437 PROTOTYPE:
1908 CODE: 2438 CODE:
1909 RETVAL = cctx_idle; 2439 RETVAL = cctx_idle;
1910 OUTPUT: 2440 OUTPUT:
1911 RETVAL 2441 RETVAL
1912 2442
1913void 2443void
1914list () 2444list ()
2445 PROTOTYPE:
1915 PPCODE: 2446 PPCODE:
1916{ 2447{
1917 struct coro *coro; 2448 struct coro *coro;
1918 for (coro = coro_first; coro; coro = coro->next) 2449 for (coro = coro_first; coro; coro = coro->next)
1919 if (coro->hv) 2450 if (coro->hv)
… …
1978 RETVAL = boolSV (coro->flags & ix); 2509 RETVAL = boolSV (coro->flags & ix);
1979 OUTPUT: 2510 OUTPUT:
1980 RETVAL 2511 RETVAL
1981 2512
1982void 2513void
2514throw (Coro::State self, SV *throw = &PL_sv_undef)
2515 PROTOTYPE: $;$
2516 CODE:
2517{
2518 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw;
2520 SvREFCNT_dec (*throwp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522}
2523
2524void
1983api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$
2527 C_ARGS: aTHX_ coro, flags
1984 2528
1985SV * 2529SV *
1986has_cctx (Coro::State coro) 2530has_cctx (Coro::State coro)
1987 PROTOTYPE: $ 2531 PROTOTYPE: $
1988 CODE: 2532 CODE:
… …
1996 CODE: 2540 CODE:
1997 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2541 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1998 OUTPUT: 2542 OUTPUT:
1999 RETVAL 2543 RETVAL
2000 2544
2001IV 2545UV
2002rss (Coro::State coro) 2546rss (Coro::State coro)
2003 PROTOTYPE: $ 2547 PROTOTYPE: $
2004 ALIAS: 2548 ALIAS:
2005 usecount = 1 2549 usecount = 1
2006 CODE: 2550 CODE:
… …
2012 OUTPUT: 2556 OUTPUT:
2013 RETVAL 2557 RETVAL
2014 2558
2015void 2559void
2016force_cctx () 2560force_cctx ()
2561 PROTOTYPE:
2017 CODE: 2562 CODE:
2018 struct coro *coro = SvSTATE (coro_current);
2019 coro->cctx->idle_sp = 0; 2563 SvSTATE_current->cctx->idle_sp = 0;
2020 2564
2021void 2565void
2022swap_defsv (Coro::State self) 2566swap_defsv (Coro::State self)
2023 PROTOTYPE: $ 2567 PROTOTYPE: $
2024 ALIAS: 2568 ALIAS:
2025 swap_defav = 1 2569 swap_defav = 1
2026 CODE: 2570 CODE:
2027 if (!self->slot) 2571 if (!self->slot)
2028 croak ("cannot swap state with coroutine that has no saved state"); 2572 croak ("cannot swap state with coroutine that has no saved state,");
2029 else 2573 else
2030 { 2574 {
2031 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2575 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2032 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2033 2577
2034 SV *tmp = *src; *src = *dst; *dst = tmp; 2578 SV *tmp = *src; *src = *dst; *dst = tmp;
2035 } 2579 }
2580
2036 2581
2037MODULE = Coro::State PACKAGE = Coro 2582MODULE = Coro::State PACKAGE = Coro
2038 2583
2039BOOT: 2584BOOT:
2040{ 2585{
… …
2058 2603
2059 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2060 coro_ready[i] = newAV (); 2605 coro_ready[i] = newAV ();
2061 2606
2062 { 2607 {
2063 SV *sv = perl_get_sv ("Coro::API", TRUE); 2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2064 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2065 2609
2066 coroapi.schedule = api_schedule; 2610 coroapi.schedule = api_schedule;
2067 coroapi.cede = api_cede; 2611 coroapi.cede = api_cede;
2068 coroapi.cede_notself = api_cede_notself; 2612 coroapi.cede_notself = api_cede_notself;
2069 coroapi.ready = api_ready; 2613 coroapi.ready = api_ready;
2070 coroapi.is_ready = api_is_ready; 2614 coroapi.is_ready = api_is_ready;
2071 coroapi.nready = &coro_nready; 2615 coroapi.nready = coro_nready;
2072 coroapi.current = coro_current; 2616 coroapi.current = coro_current;
2073 2617
2074 GCoroAPI = &coroapi; 2618 GCoroAPI = &coroapi;
2075 sv_setiv (sv, (IV)&coroapi); 2619 sv_setiv (sv, (IV)&coroapi);
2076 SvREADONLY_on (sv); 2620 SvREADONLY_on (sv);
2077 } 2621 }
2078} 2622}
2623
2624void
2625schedule (...)
2626 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628
2629void
2630cede (...)
2631 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633
2634void
2635cede_notself (...)
2636 CODE:
2637 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2079 2638
2080void 2639void
2081_set_current (SV *current) 2640_set_current (SV *current)
2082 PROTOTYPE: $ 2641 PROTOTYPE: $
2083 CODE: 2642 CODE:
… …
2086 2645
2087void 2646void
2088_set_readyhook (SV *hook) 2647_set_readyhook (SV *hook)
2089 PROTOTYPE: $ 2648 PROTOTYPE: $
2090 CODE: 2649 CODE:
2091 LOCK;
2092 SvREFCNT_dec (coro_readyhook); 2650 SvREFCNT_dec (coro_readyhook);
2093 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2094 UNLOCK;
2095 2652
2096int 2653int
2097prio (Coro::State coro, int newprio = 0) 2654prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$
2098 ALIAS: 2656 ALIAS:
2099 nice = 1 2657 nice = 1
2100 CODE: 2658 CODE:
2101{ 2659{
2102 RETVAL = coro->prio; 2660 RETVAL = coro->prio;
… …
2117 2675
2118SV * 2676SV *
2119ready (SV *self) 2677ready (SV *self)
2120 PROTOTYPE: $ 2678 PROTOTYPE: $
2121 CODE: 2679 CODE:
2122 RETVAL = boolSV (api_ready (self)); 2680 RETVAL = boolSV (api_ready (aTHX_ self));
2123 OUTPUT: 2681 OUTPUT:
2124 RETVAL 2682 RETVAL
2125 2683
2126int 2684int
2127nready (...) 2685nready (...)
… …
2129 CODE: 2687 CODE:
2130 RETVAL = coro_nready; 2688 RETVAL = coro_nready;
2131 OUTPUT: 2689 OUTPUT:
2132 RETVAL 2690 RETVAL
2133 2691
2134void
2135throw (Coro::State self, SV *throw = &PL_sv_undef)
2136 PROTOTYPE: $;$
2137 CODE:
2138 SvREFCNT_dec (self->throw);
2139 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2140
2141# for async_pool speedup 2692# for async_pool speedup
2142void 2693void
2143_pool_1 (SV *cb) 2694_pool_1 (SV *cb)
2144 CODE: 2695 CODE:
2145{ 2696{
2146 struct coro *coro = SvSTATE (coro_current);
2147 HV *hv = (HV *)SvRV (coro_current); 2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2148 AV *defav = GvAV (PL_defgv); 2699 AV *defav = GvAV (PL_defgv);
2149 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2150 AV *invoke_av; 2701 AV *invoke_av;
2151 int i, len; 2702 int i, len;
2152 2703
… …
2173 { 2724 {
2174 av_fill (defav, len - 1); 2725 av_fill (defav, len - 1);
2175 for (i = 0; i < len; ++i) 2726 for (i = 0; i < len; ++i)
2176 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2177 } 2728 }
2178
2179 SvREFCNT_dec (invoke);
2180} 2729}
2181 2730
2182void 2731void
2183_pool_2 (SV *cb) 2732_pool_2 (SV *cb)
2184 CODE: 2733 CODE:
2185{ 2734{
2186 struct coro *coro = SvSTATE (coro_current); 2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv);
2187 2737
2188 sv_setsv (cb, &PL_sv_undef); 2738 sv_setsv (cb, &PL_sv_undef);
2189 2739
2190 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2191 coro->saved_deffh = 0; 2741 coro->saved_deffh = 0;
2192 2742
2193 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2194 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2195 { 2745 {
2196 SV *old = PL_diehook; 2746 SV *old = PL_diehook;
2197 PL_diehook = 0; 2747 PL_diehook = 0;
2198 SvREFCNT_dec (old); 2748 SvREFCNT_dec (old);
2199 croak ("\3async_pool terminate\2\n"); 2749 croak ("\3async_pool terminate\2\n");
2200 } 2750 }
2201 2751
2202 av_clear (GvAV (PL_defgv)); 2752 av_clear (GvAV (PL_defgv));
2203 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2753 hv_store (hv, "desc", sizeof ("desc") - 1,
2204 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2205 2755
2206 coro->prio = 0; 2756 coro->prio = 0;
2207 2757
2208 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2209 api_trace (coro_current, 0); 2759 api_trace (aTHX_ coro_current, 0);
2210 2760
2211 av_push (av_async_pool, newSVsv (coro_current)); 2761 av_push (av_async_pool, newSVsv (coro_current));
2212} 2762}
2213 2763
2214#if 0
2215 2764
2216void 2765MODULE = Coro::State PACKAGE = PerlIO::cede
2217_generator_call (...) 2766
2218 PROTOTYPE: @ 2767BOOT:
2219 PPCODE: 2768 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2220 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2769
2221 xxxx 2770
2222 abort (); 2771MODULE = Coro::State PACKAGE = Coro::Semaphore
2223 2772
2224SV * 2773SV *
2225gensub (SV *sub, ...) 2774new (SV *klass, SV *count_ = 0)
2226 PROTOTYPE: &;@ 2775 CODE:
2227 CODE:
2228{ 2776{
2229 struct coro *coro; 2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2230 MAGIC *mg; 2778 AV *av = newAV ();
2231 CV *xcv; 2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2232 CV *ncv = (CV *)newSV_type (SVt_PVCV); 2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2233 int i;
2234
2235 CvGV (ncv) = CvGV (cv);
2236 CvFILE (ncv) = CvFILE (cv);
2237
2238 Newz (0, coro, 1, struct coro);
2239 coro->args = newAV ();
2240 coro->flags = CF_NEW;
2241
2242 av_extend (coro->args, items - 1);
2243 for (i = 1; i < items; i++)
2244 av_push (coro->args, newSVsv (ST (i)));
2245
2246 CvISXSUB_on (ncv);
2247 CvXSUBANY (ncv).any_ptr = (void *)coro;
2248
2249 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2250
2251 CvXSUB (ncv) = CvXSUB (xcv);
2252 CvANON_on (ncv);
2253
2254 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2255 RETVAL = newRV_noinc ((SV *)ncv);
2256} 2781}
2257 OUTPUT: 2782 OUTPUT:
2258 RETVAL 2783 RETVAL
2259 2784
2260#endif 2785SV *
2261 2786count (SV *self)
2262 2787 CODE:
2263MODULE = Coro::State PACKAGE = Coro::AIO 2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT:
2790 RETVAL
2264 2791
2265void 2792void
2266_get_state (SV *self) 2793up (SV *self, int adjust = 1)
2267 PPCODE: 2794 ALIAS:
2268{ 2795 adjust = 1
2269 AV *defav = GvAV (PL_defgv); 2796 CODE:
2270 AV *av = newAV (); 2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2271 int i;
2272 SV *data_sv = newSV (sizeof (struct io_state));
2273 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2274 SvCUR_set (data_sv, sizeof (struct io_state));
2275 SvPOK_only (data_sv);
2276
2277 data->errorno = errno;
2278 data->laststype = PL_laststype;
2279 data->laststatval = PL_laststatval;
2280 data->statcache = PL_statcache;
2281
2282 av_extend (av, AvFILLp (defav) + 1 + 1);
2283
2284 for (i = 0; i <= AvFILLp (defav); ++i)
2285 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2286
2287 av_push (av, data_sv);
2288
2289 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2290
2291 api_ready (self);
2292}
2293 2798
2294void 2799void
2295_set_state (SV *state) 2800down (SV *self)
2296 PROTOTYPE: $ 2801 CODE:
2297 PPCODE: 2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2803
2804void
2805try (SV *self)
2806 PPCODE:
2298{ 2807{
2299 AV *av = (AV *)SvRV (state); 2808 AV *av = (AV *)SvRV (self);
2300 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2809 SV *count_sv = AvARRAY (av)[0];
2810 IV count = SvIVX (count_sv);
2811
2812 if (count > 0)
2813 {
2814 --count;
2815 SvIVX (count_sv) = count;
2816 XSRETURN_YES;
2817 }
2818 else
2819 XSRETURN_NO;
2820}
2821
2822void
2823waiters (SV *self)
2824 CODE:
2825{
2826 AV *av = (AV *)SvRV (self);
2827
2828 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2830 else
2831 {
2301 int i; 2832 int i;
2302
2303 errno = data->errorno;
2304 PL_laststype = data->laststype;
2305 PL_laststatval = data->laststatval;
2306 PL_statcache = data->statcache;
2307
2308 EXTEND (SP, AvFILLp (av)); 2833 EXTEND (SP, AvFILLp (av) + 1 - 1);
2309 for (i = 0; i < AvFILLp (av); ++i) 2834 for (i = 1; i <= AvFILLp (av); ++i)
2310 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2835 PUSHs (newSVsv (AvARRAY (av)[i]));
2836 }
2311} 2837}
2312 2838
2313 2839
2314MODULE = Coro::State PACKAGE = Coro::AnyEvent 2840MODULE = Coro::State PACKAGE = Coro::AnyEvent
2315 2841
2316BOOT: 2842BOOT:
2317 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2843 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2318 2844
2319SV * 2845void
2320_schedule (...) 2846_schedule (...)
2321 PROTOTYPE: @
2322 CODE: 2847 CODE:
2323{ 2848{
2324 static int incede; 2849 static int incede;
2325 2850
2326 api_cede_notself (); 2851 api_cede_notself (aTHX);
2327 2852
2328 ++incede; 2853 ++incede;
2329 while (coro_nready >= incede && api_cede ()) 2854 while (coro_nready >= incede && api_cede (aTHX))
2330 ; 2855 ;
2331 2856
2332 sv_setsv (sv_activity, &PL_sv_undef); 2857 sv_setsv (sv_activity, &PL_sv_undef);
2333 if (coro_nready >= incede) 2858 if (coro_nready >= incede)
2334 { 2859 {
… …
2340 2865
2341 --incede; 2866 --incede;
2342} 2867}
2343 2868
2344 2869
2345MODULE = Coro::State PACKAGE = PerlIO::cede 2870MODULE = Coro::State PACKAGE = Coro::AIO
2346 2871
2347BOOT: 2872void
2348 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881}
2882

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