ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.256 by root, Sat Nov 8 13:32:18 2008 UTC vs.
Revision 1.307 by root, Wed Nov 19 14:34:46 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
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
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103 103
104/* 5.8.7 */ 104/* 5.8.7 */
105#ifndef SvRV_set 105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 107#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 120#endif
121 121
122/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
124#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
133#else 138#else
134# define attribute(x) 139# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
137#endif 142#endif
138 143
139#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#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 153# if CORO_PTHREAD
152static void *coro_thx; 154static void *coro_thx;
153# endif 155# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 156#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 157
177static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
178 163
179static U32 cctx_gen; 164static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
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 */
… …
209 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
210 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
211}; 196};
212 197
213/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
214typedef struct coro_cctx { 199typedef struct coro_cctx
200{
215 struct coro_cctx *next; 201 struct coro_cctx *next;
216 202
217 /* the stack */ 203 /* the stack */
218 void *sptr; 204 void *sptr;
219 size_t ssize; 205 size_t ssize;
… …
237 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
238 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
239}; 225};
240 226
241/* 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 */
242typedef struct { 228typedef struct
229{
243 SV *defsv; 230 SV *defsv;
244 AV *defav; 231 AV *defav;
245 SV *errsv; 232 SV *errsv;
246 SV *irsgv; 233 SV *irsgv;
247#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
251 238
252#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))
253 240
254/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
255struct coro { 242struct coro {
256 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
257 coro_cctx *cctx; 244 coro_cctx *cctx;
258 245
259 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
260 AV *mainstack; 248 AV *mainstack;
261 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
262 250
251 CV *startcv; /* the CV to execute */
263 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
264 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
265 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
266 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
267 257
268 /* statistics */ 258 /* statistics */
269 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
270 260
271 /* coro process data */ 261 /* coro process data */
272 int prio; 262 int prio;
273 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
274 265
275 /* async_pool */ 266 /* async_pool */
276 SV *saved_deffh; 267 SV *saved_deffh;
277 268
278 /* linked list */ 269 /* linked list */
279 struct coro *next, *prev; 270 struct coro *next, *prev;
280}; 271};
281 272
282typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
283typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */
284 280
285/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
286 282
287#define PRIO_MAX 3 283#define PRIO_MAX 3
288#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
292#define PRIO_MIN -4 288#define PRIO_MIN -4
293 289
294/* for Coro.pm */ 290/* for Coro.pm */
295static SV *coro_current; 291static SV *coro_current;
296static SV *coro_readyhook; 292static SV *coro_readyhook;
297static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
298static int coro_nready;
299static struct coro *coro_first; 294static struct coro *coro_first;
295#define coro_nready coroapi.nready
300 296
301/** lowlevel stuff **********************************************************/ 297/** lowlevel stuff **********************************************************/
302 298
303static SV * 299static SV *
304coro_get_sv (pTHX_ const char *name, int create) 300coro_get_sv (pTHX_ const char *name, int create)
… …
326#if PERL_VERSION_ATLEAST (5,10,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
327 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
328 get_hv (name, create); 324 get_hv (name, create);
329#endif 325#endif
330 return get_hv (name, create); 326 return get_hv (name, create);
327}
328
329/* may croak */
330INLINE CV *
331coro_sv_2cv (SV *sv)
332{
333 HV *st;
334 GV *gvp;
335 return sv_2cv (sv, &st, &gvp, 0);
331} 336}
332 337
333static AV * 338static AV *
334coro_clone_padlist (pTHX_ CV *cv) 339coro_clone_padlist (pTHX_ CV *cv)
335{ 340{
… …
389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
390 395
391 return 0; 396 return 0;
392} 397}
393 398
394#define CORO_MAGIC_type_cv PERL_MAGIC_ext 399#define CORO_MAGIC_type_cv 26
395#define CORO_MAGIC_type_state PERL_MAGIC_ext 400#define CORO_MAGIC_type_state PERL_MAGIC_ext
396 401
397static MGVTBL coro_cv_vtbl = { 402static MGVTBL coro_cv_vtbl = {
398 0, 0, 0, 0, 403 0, 0, 0, 0,
399 coro_cv_free 404 coro_cv_free
400}; 405};
401 406
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
402#define CORO_MAGIC(sv, type) \ 412#define CORO_MAGIC(sv, type) \
403 SvMAGIC (sv) \ 413 (expect_true (SvMAGIC (sv)) \
404 ? SvMAGIC (sv)->mg_type == type \ 414 ? CORO_MAGIC_NN (sv, type) \
405 ? SvMAGIC (sv) \
406 : mg_find (sv, type) \
407 : 0 415 : 0)
408 416
409#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
410#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
411 419
412static struct coro * 420INLINE struct coro *
413SvSTATE_ (pTHX_ SV *coro) 421SvSTATE_ (pTHX_ SV *coro)
414{ 422{
415 HV *stash; 423 HV *stash;
416 MAGIC *mg; 424 MAGIC *mg;
417 425
… …
432 mg = CORO_MAGIC_state (coro); 440 mg = CORO_MAGIC_state (coro);
433 return (struct coro *)mg->mg_ptr; 441 return (struct coro *)mg->mg_ptr;
434} 442}
435 443
436#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
437 449
438/* the next two functions merely cache the padlists */ 450/* the next two functions merely cache the padlists */
439static void 451static void
440get_padlist (pTHX_ CV *cv) 452get_padlist (pTHX_ CV *cv)
441{ 453{
… …
447 else 459 else
448 { 460 {
449#if CORO_PREFER_PERL_FUNCTIONS 461#if CORO_PREFER_PERL_FUNCTIONS
450 /* this is probably cleaner? but also slower! */ 462 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */ 463 /* in practise, it seems to be less stable */
452 CV *cp = Perl_cv_clone (cv); 464 CV *cp = Perl_cv_clone (aTHX_ cv);
453 CvPADLIST (cv) = CvPADLIST (cp); 465 CvPADLIST (cv) = CvPADLIST (cp);
454 CvPADLIST (cp) = 0; 466 CvPADLIST (cp) = 0;
455 SvREFCNT_dec (cp); 467 SvREFCNT_dec (cp);
456#else 468#else
457 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
508 CvPADLIST (cv) = (AV *)POPs; 520 CvPADLIST (cv) = (AV *)POPs;
509 } 521 }
510 522
511 PUTBACK; 523 PUTBACK;
512 } 524 }
525
526 slf_frame = c->slf_frame;
527 CORO_THROW = c->except;
513} 528}
514 529
515static void 530static void
516save_perl (pTHX_ Coro__State c) 531save_perl (pTHX_ Coro__State c)
517{ 532{
533 c->except = CORO_THROW;
534 c->slf_frame = slf_frame;
535
518 { 536 {
519 dSP; 537 dSP;
520 I32 cxix = cxstack_ix; 538 I32 cxix = cxstack_ix;
521 PERL_CONTEXT *ccstk = cxstack; 539 PERL_CONTEXT *ccstk = cxstack;
522 PERL_SI *top_si = PL_curstackinfo; 540 PERL_SI *top_si = PL_curstackinfo;
… …
589 #undef VAR 607 #undef VAR
590 } 608 }
591} 609}
592 610
593/* 611/*
594 * allocate various perl stacks. This is an exact copy 612 * allocate various perl stacks. This is almost an exact copy
595 * of perl.c:init_stacks, except that it uses less memory 613 * of perl.c:init_stacks, except that it uses less memory
596 * on the (sometimes correct) assumption that coroutines do 614 * on the (sometimes correct) assumption that coroutines do
597 * not usually need a lot of stackspace. 615 * not usually need a lot of stackspace.
598 */ 616 */
599#if CORO_PREFER_PERL_FUNCTIONS 617#if CORO_PREFER_PERL_FUNCTIONS
600# define coro_init_stacks init_stacks 618# define coro_init_stacks(thx) init_stacks ()
601#else 619#else
602static void 620static void
603coro_init_stacks (pTHX) 621coro_init_stacks (pTHX)
604{ 622{
605 PL_curstackinfo = new_stackinfo(32, 8); 623 PL_curstackinfo = new_stackinfo(32, 8);
… …
801 819
802 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
803} 821}
804 822
805static void 823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
806coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
807{ 840{
808 /* 841 /*
809 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
810 */ 843 */
… …
834 PL_rs = newSVsv (GvSV (irsgv)); 867 PL_rs = newSVsv (GvSV (irsgv));
835 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
836 869
837 { 870 {
838 dSP; 871 dSP;
839 LOGOP myop; 872 UNOP myop;
840 873
841 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
842 myop.op_next = Nullop; 875 myop.op_next = Nullop;
843 myop.op_flags = OPf_WANT_VOID; 876 myop.op_flags = OPf_WANT_VOID;
844 877
845 PUSHMARK (SP); 878 PUSHMARK (SP);
846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
847 PUTBACK; 880 PUTBACK;
… …
849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
850 SPAGAIN; 883 SPAGAIN;
851 } 884 }
852 885
853 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
854 * likely was suspended in set_stacklevel, called from entersub. 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
855 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
856 * so we ENTER here for symmetry
857 */ 888 */
858 ENTER; 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
859} 902}
860 903
861static void 904static void
862coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
863{ 906{
… …
886 SvREFCNT_dec (GvSV (irsgv)); 929 SvREFCNT_dec (GvSV (irsgv));
887 930
888 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
889 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
890 933
934 SvREFCNT_dec (CORO_THROW);
891 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
892 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
893 937
894 coro_destruct_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
895} 939}
896 940
897static void 941INLINE void
898free_coro_mortal (pTHX) 942free_coro_mortal (pTHX)
899{ 943{
900 if (expect_true (coro_mortal)) 944 if (expect_true (coro_mortal))
901 { 945 {
902 SvREFCNT_dec (coro_mortal); 946 SvREFCNT_dec (coro_mortal);
… …
907static int 951static int
908runops_trace (pTHX) 952runops_trace (pTHX)
909{ 953{
910 COP *oldcop = 0; 954 COP *oldcop = 0;
911 int oldcxix = -2; 955 int oldcxix = -2;
912 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
913 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
914 958
915 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
916 { 960 {
917 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
984 SAVETMPS; 1028 SAVETMPS;
985 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
986 PUSHMARK (SP); 1030 PUSHMARK (SP);
987 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
988 PUSHs (fullname); 1032 PUSHs (fullname);
989 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1033 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
990 PUTBACK; 1034 PUTBACK;
991 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
992 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
993 SPAGAIN; 1037 SPAGAIN;
994 FREETMPS; 1038 FREETMPS;
… …
1026 1070
1027 TAINT_NOT; 1071 TAINT_NOT;
1028 return 0; 1072 return 0;
1029} 1073}
1030 1074
1031/* inject a fake call to Coro::State::_cctx_init into the execution */ 1075static struct coro_cctx *cctx_ssl_cctx;
1032/* _cctx_init should be careful, as it could be called at almost any time */ 1076static struct CoroSLF cctx_ssl_frame;
1033/* during execution of a perl program */ 1077
1078static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0;
1083}
1084
1085static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{
1088 *frame = cctx_ssl_frame;
1089
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091}
1092
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1034static void NOINLINE 1094static void NOINLINE
1035cctx_prepare (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
1036{ 1096{
1037 dSP;
1038 LOGOP myop;
1039
1040 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
1041 1098
1042 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
1043 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
1044 1101
1045 Zero (&myop, 1, LOGOP); 1102 /* we already must be executing an SLF op, there is no other valid way
1046 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1048 1106
1049 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1050 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
1051 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1109 cctx_ssl_frame = slf_frame;
1052 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
1053 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
1054 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
1055 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1113}
1056 SPAGAIN; 1114
1115/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void
1117transfer_tail (pTHX)
1118{
1119 free_coro_mortal (aTHX);
1057} 1120}
1058 1121
1059/* 1122/*
1060 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
1061 */ 1124 */
… …
1068# endif 1131# endif
1069#endif 1132#endif
1070 { 1133 {
1071 dTHX; 1134 dTHX;
1072 1135
1073 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1136 /* normally we would need to skip the entersub here */
1074 UNLOCK; 1137 /* not doing so will re-execute it, which is exactly what we want */
1075
1076 /* we now skip the entersub that lead to transfer() */
1077 PL_op = PL_op->op_next; 1138 /* PL_nop = PL_nop->op_next */
1078 1139
1079 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
1080 cctx_prepare (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
1142
1143 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX);
1081 1145
1082 /* somebody or something will hit me for both perl_run and PL_restartop */ 1146 /* somebody or something will hit me for both perl_run and PL_restartop */
1083 PL_restartop = PL_op; 1147 PL_restartop = PL_op;
1084 perl_run (PL_curinterp); 1148 perl_run (PL_curinterp);
1085 1149
… …
1097 1161
1098static coro_cctx * 1162static coro_cctx *
1099cctx_new () 1163cctx_new ()
1100{ 1164{
1101 coro_cctx *cctx; 1165 coro_cctx *cctx;
1166
1167 ++cctx_count;
1168 New (0, cctx, 1, coro_cctx);
1169
1170 cctx->gen = cctx_gen;
1171 cctx->flags = 0;
1172 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx only suitable as source */
1178static coro_cctx *
1179cctx_new_empty ()
1180{
1181 coro_cctx *cctx = cctx_new ();
1182
1183 cctx->sptr = 0;
1184 coro_create (&cctx->cctx, 0, 0, 0, 0);
1185
1186 return cctx;
1187}
1188
1189/* create a new cctx suitable as destination/running a perl interpreter */
1190static coro_cctx *
1191cctx_new_run ()
1192{
1193 coro_cctx *cctx = cctx_new ();
1102 void *stack_start; 1194 void *stack_start;
1103 size_t stack_size; 1195 size_t stack_size;
1104
1105 ++cctx_count;
1106 Newz (0, cctx, 1, coro_cctx);
1107
1108 cctx->gen = cctx_gen;
1109 1196
1110#if HAVE_MMAP 1197#if HAVE_MMAP
1111 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1198 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1112 /* mmap supposedly does allocate-on-write for us */ 1199 /* mmap supposedly does allocate-on-write for us */
1113 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1200 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1114 1201
1115 if (cctx->sptr != (void *)-1) 1202 if (cctx->sptr != (void *)-1)
1116 { 1203 {
1117# if CORO_STACKGUARD 1204 #if CORO_STACKGUARD
1118 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1205 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1119# endif 1206 #endif
1120 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1207 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1121 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1208 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1122 cctx->flags |= CC_MAPPED; 1209 cctx->flags |= CC_MAPPED;
1123 } 1210 }
1124 else 1211 else
1125#endif 1212#endif
1126 { 1213 {
1127 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1214 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1128 New (0, cctx->sptr, cctx_stacksize, long); 1215 New (0, cctx->sptr, cctx_stacksize, long);
1129 1216
1130 if (!cctx->sptr) 1217 if (!cctx->sptr)
1131 { 1218 {
1132 perror ("FATAL: unable to allocate stack for coroutine"); 1219 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1133 _exit (EXIT_FAILURE); 1220 _exit (EXIT_FAILURE);
1134 } 1221 }
1135 1222
1136 stack_start = cctx->sptr; 1223 stack_start = cctx->sptr;
1137 stack_size = cctx->ssize; 1224 stack_size = cctx->ssize;
1138 } 1225 }
1139 1226
1140 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1227 #if CORO_USE_VALGRIND
1228 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1229 #endif
1230
1141 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1231 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1142 1232
1143 return cctx; 1233 return cctx;
1144} 1234}
1145 1235
… …
1153 coro_destroy (&cctx->cctx); 1243 coro_destroy (&cctx->cctx);
1154 1244
1155 /* coro_transfer creates new, empty cctx's */ 1245 /* coro_transfer creates new, empty cctx's */
1156 if (cctx->sptr) 1246 if (cctx->sptr)
1157 { 1247 {
1158#if CORO_USE_VALGRIND 1248 #if CORO_USE_VALGRIND
1159 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1249 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1160#endif 1250 #endif
1161 1251
1162#if HAVE_MMAP 1252#if HAVE_MMAP
1163 if (cctx->flags & CC_MAPPED) 1253 if (cctx->flags & CC_MAPPED)
1164 munmap (cctx->sptr, cctx->ssize); 1254 munmap (cctx->sptr, cctx->ssize);
1165 else 1255 else
… …
1186 return cctx; 1276 return cctx;
1187 1277
1188 cctx_destroy (cctx); 1278 cctx_destroy (cctx);
1189 } 1279 }
1190 1280
1191 return cctx_new (); 1281 return cctx_new_run ();
1192} 1282}
1193 1283
1194static void 1284static void
1195cctx_put (coro_cctx *cctx) 1285cctx_put (coro_cctx *cctx)
1196{ 1286{
1197 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1287 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1198 1288
1199 /* free another cctx if overlimit */ 1289 /* free another cctx if overlimit */
1200 if (expect_false (cctx_idle >= cctx_max_idle)) 1290 if (expect_false (cctx_idle >= cctx_max_idle))
1201 { 1291 {
1202 coro_cctx *first = cctx_first; 1292 coro_cctx *first = cctx_first;
… …
1214/** coroutine switching *****************************************************/ 1304/** coroutine switching *****************************************************/
1215 1305
1216static void 1306static void
1217transfer_check (pTHX_ struct coro *prev, struct coro *next) 1307transfer_check (pTHX_ struct coro *prev, struct coro *next)
1218{ 1308{
1309 /* TODO: throwing up here is considered harmful */
1310
1219 if (expect_true (prev != next)) 1311 if (expect_true (prev != next))
1220 { 1312 {
1221 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1313 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1222 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1314 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1223 1315
1224 if (expect_false (next->flags & CF_RUNNING)) 1316 if (expect_false (next->flags & CF_RUNNING))
1225 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1317 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1226 1318
1227 if (expect_false (next->flags & CF_DESTROYED)) 1319 if (expect_false (next->flags & CF_DESTROYED))
1228 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1320 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1229 1321
1230#if !PERL_VERSION_ATLEAST (5,10,0) 1322#if !PERL_VERSION_ATLEAST (5,10,0)
1231 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1323 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1232 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1324 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1233#endif 1325#endif
1234 } 1326 }
1235} 1327}
1236 1328
1237/* always use the TRANSFER macro */ 1329/* always use the TRANSFER macro */
1238static void NOINLINE 1330static void NOINLINE /* noinline so we have a fixed stackframe */
1239transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1331transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1240{ 1332{
1241 dSTACKLEVEL; 1333 dSTACKLEVEL;
1242 1334
1243 /* sometimes transfer is only called to set idle_sp */ 1335 /* sometimes transfer is only called to set idle_sp */
… …
1246 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1338 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1247 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1339 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1248 } 1340 }
1249 else if (expect_true (prev != next)) 1341 else if (expect_true (prev != next))
1250 { 1342 {
1251 static volatile int has_throw;
1252 coro_cctx *prev__cctx; 1343 coro_cctx *prev__cctx;
1253 1344
1254 if (expect_false (prev->flags & CF_NEW)) 1345 if (expect_false (prev->flags & CF_NEW))
1255 { 1346 {
1256 /* create a new empty/source context */ 1347 /* create a new empty/source context */
1257 ++cctx_count; 1348 prev->cctx = cctx_new_empty ();
1258 New (0, prev->cctx, 1, coro_cctx);
1259 prev->cctx->sptr = 0;
1260 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1261
1262 prev->flags &= ~CF_NEW; 1349 prev->flags &= ~CF_NEW;
1263 prev->flags |= CF_RUNNING; 1350 prev->flags |= CF_RUNNING;
1264 } 1351 }
1265 1352
1266 prev->flags &= ~CF_RUNNING; 1353 prev->flags &= ~CF_RUNNING;
1267 next->flags |= CF_RUNNING; 1354 next->flags |= CF_RUNNING;
1268
1269 LOCK;
1270 1355
1271 /* first get rid of the old state */ 1356 /* first get rid of the old state */
1272 save_perl (aTHX_ prev); 1357 save_perl (aTHX_ prev);
1273 1358
1274 if (expect_false (next->flags & CF_NEW)) 1359 if (expect_false (next->flags & CF_NEW))
… …
1281 else 1366 else
1282 load_perl (aTHX_ next); 1367 load_perl (aTHX_ next);
1283 1368
1284 prev__cctx = prev->cctx; 1369 prev__cctx = prev->cctx;
1285 1370
1286 /* possibly "free" the cctx */ 1371 /* possibly untie and reuse the cctx */
1287 if (expect_true ( 1372 if (expect_true (
1288 prev__cctx->idle_sp == STACKLEVEL 1373 prev__cctx->idle_sp == STACKLEVEL
1289 && !(prev__cctx->flags & CC_TRACE) 1374 && !(prev__cctx->flags & CC_TRACE)
1290 && !force_cctx 1375 && !force_cctx
1291 )) 1376 ))
1292 { 1377 {
1293 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1378 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1294 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1379 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1295 1380
1296 prev->cctx = 0; 1381 prev->cctx = 0;
1297 1382
1298 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1383 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1299 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1384 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1306 1391
1307 ++next->usecount; 1392 ++next->usecount;
1308 1393
1309 if (expect_true (!next->cctx)) 1394 if (expect_true (!next->cctx))
1310 next->cctx = cctx_get (aTHX); 1395 next->cctx = cctx_get (aTHX);
1311
1312 has_throw = !!next->throw;
1313 1396
1314 if (expect_false (prev__cctx != next->cctx)) 1397 if (expect_false (prev__cctx != next->cctx))
1315 { 1398 {
1316 prev__cctx->top_env = PL_top_env; 1399 prev__cctx->top_env = PL_top_env;
1317 PL_top_env = next->cctx->top_env; 1400 PL_top_env = next->cctx->top_env;
1318 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1401 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1319 } 1402 }
1320 1403
1321 free_coro_mortal (aTHX); 1404 transfer_tail (aTHX);
1322 UNLOCK;
1323
1324 if (expect_false (has_throw))
1325 {
1326 struct coro *coro = SvSTATE (coro_current);
1327
1328 if (coro->throw)
1329 {
1330 SV *exception = coro->throw;
1331 coro->throw = 0;
1332 sv_setsv (ERRSV, exception);
1333 croak (0);
1334 }
1335 }
1336 } 1405 }
1337} 1406}
1338
1339struct transfer_args
1340{
1341 struct coro *prev, *next;
1342};
1343 1407
1344#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1408#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1345#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1409#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1346 1410
1347/** high level stuff ********************************************************/ 1411/** high level stuff ********************************************************/
… …
1349static int 1413static int
1350coro_state_destroy (pTHX_ struct coro *coro) 1414coro_state_destroy (pTHX_ struct coro *coro)
1351{ 1415{
1352 if (coro->flags & CF_DESTROYED) 1416 if (coro->flags & CF_DESTROYED)
1353 return 0; 1417 return 0;
1418
1419 if (coro->on_destroy)
1420 coro->on_destroy (aTHX_ coro);
1354 1421
1355 coro->flags |= CF_DESTROYED; 1422 coro->flags |= CF_DESTROYED;
1356 1423
1357 if (coro->flags & CF_READY) 1424 if (coro->flags & CF_READY)
1358 { 1425 {
1359 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1426 /* reduce nready, as destroying a ready coro effectively unreadies it */
1360 /* alternative: look through all ready queues and remove the coro */ 1427 /* alternative: look through all ready queues and remove the coro */
1361 LOCK;
1362 --coro_nready; 1428 --coro_nready;
1363 UNLOCK;
1364 } 1429 }
1365 else 1430 else
1366 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1367 1432
1368 if (coro->mainstack && coro->mainstack != main_mainstack) 1433 if (coro->mainstack && coro->mainstack != main_mainstack)
1369 { 1434 {
1370 struct coro temp; 1435 struct coro temp;
1371 1436
1372 if (coro->flags & CF_RUNNING) 1437 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1373 croak ("FATAL: tried to destroy currently running coroutine");
1374 1438
1375 save_perl (aTHX_ &temp); 1439 save_perl (aTHX_ &temp);
1376 load_perl (aTHX_ coro); 1440 load_perl (aTHX_ coro);
1377 1441
1378 coro_destruct (aTHX_ coro); 1442 coro_destruct (aTHX_ coro);
… …
1381 1445
1382 coro->slot = 0; 1446 coro->slot = 0;
1383 } 1447 }
1384 1448
1385 cctx_destroy (coro->cctx); 1449 cctx_destroy (coro->cctx);
1450 SvREFCNT_dec (coro->startcv);
1386 SvREFCNT_dec (coro->args); 1451 SvREFCNT_dec (coro->args);
1387 1452
1388 if (coro->next) coro->next->prev = coro->prev; 1453 if (coro->next) coro->next->prev = coro->prev;
1389 if (coro->prev) coro->prev->next = coro->next; 1454 if (coro->prev) coro->prev->next = coro->next;
1390 if (coro == coro_first) coro_first = coro->next; 1455 if (coro == coro_first) coro_first = coro->next;
… …
1429# define MGf_DUP 0 1494# define MGf_DUP 0
1430#endif 1495#endif
1431}; 1496};
1432 1497
1433static void 1498static void
1434prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1499prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1435{ 1500{
1436 ta->prev = SvSTATE (prev_sv); 1501 ta->prev = SvSTATE (prev_sv);
1437 ta->next = SvSTATE (next_sv); 1502 ta->next = SvSTATE (next_sv);
1438 TRANSFER_CHECK (*ta); 1503 TRANSFER_CHECK (*ta);
1439} 1504}
1440 1505
1441static void 1506static void
1442api_transfer (SV *prev_sv, SV *next_sv) 1507api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1443{ 1508{
1444 dTHX;
1445 struct transfer_args ta; 1509 struct coro_transfer_args ta;
1446 1510
1447 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1511 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1448 TRANSFER (ta, 1); 1512 TRANSFER (ta, 1);
1449} 1513}
1450 1514
1515/*****************************************************************************/
1516/* gensub: simple closure generation utility */
1517
1518#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1519
1520/* create a closure from XS, returns a code reference */
1521/* the arg can be accessed via GENSUB_ARG from the callback */
1522/* the callback must use dXSARGS/XSRETURN */
1523static SV *
1524gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1525{
1526 CV *cv = (CV *)newSV (0);
1527
1528 sv_upgrade ((SV *)cv, SVt_PVCV);
1529
1530 CvANON_on (cv);
1531 CvISXSUB_on (cv);
1532 CvXSUB (cv) = xsub;
1533 GENSUB_ARG = arg;
1534
1535 return newRV_noinc ((SV *)cv);
1536}
1537
1451/** Coro ********************************************************************/ 1538/** Coro ********************************************************************/
1452 1539
1453static void 1540INLINE void
1454coro_enq (pTHX_ SV *coro_sv) 1541coro_enq (pTHX_ struct coro *coro)
1455{ 1542{
1456 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1543 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1457} 1544}
1458 1545
1459static SV * 1546INLINE SV *
1460coro_deq (pTHX) 1547coro_deq (pTHX)
1461{ 1548{
1462 int prio; 1549 int prio;
1463 1550
1464 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1551 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1467 1554
1468 return 0; 1555 return 0;
1469} 1556}
1470 1557
1471static int 1558static int
1472api_ready (SV *coro_sv) 1559api_ready (pTHX_ SV *coro_sv)
1473{ 1560{
1474 dTHX;
1475 struct coro *coro; 1561 struct coro *coro;
1476 SV *sv_hook; 1562 SV *sv_hook;
1477 void (*xs_hook)(void); 1563 void (*xs_hook)(void);
1478 1564
1479 if (SvROK (coro_sv)) 1565 if (SvROK (coro_sv))
… …
1484 if (coro->flags & CF_READY) 1570 if (coro->flags & CF_READY)
1485 return 0; 1571 return 0;
1486 1572
1487 coro->flags |= CF_READY; 1573 coro->flags |= CF_READY;
1488 1574
1489 LOCK;
1490
1491 sv_hook = coro_nready ? 0 : coro_readyhook; 1575 sv_hook = coro_nready ? 0 : coro_readyhook;
1492 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1576 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1493 1577
1494 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1578 coro_enq (aTHX_ coro);
1495 ++coro_nready; 1579 ++coro_nready;
1496 1580
1497 UNLOCK;
1498
1499 if (sv_hook) 1581 if (sv_hook)
1500 { 1582 {
1501 dSP; 1583 dSP;
1502 1584
1503 ENTER; 1585 ENTER;
1504 SAVETMPS; 1586 SAVETMPS;
1505 1587
1506 PUSHMARK (SP); 1588 PUSHMARK (SP);
1507 PUTBACK; 1589 PUTBACK;
1508 call_sv (sv_hook, G_DISCARD); 1590 call_sv (sv_hook, G_VOID | G_DISCARD);
1509 SPAGAIN;
1510 1591
1511 FREETMPS; 1592 FREETMPS;
1512 LEAVE; 1593 LEAVE;
1513 } 1594 }
1514 1595
… …
1517 1598
1518 return 1; 1599 return 1;
1519} 1600}
1520 1601
1521static int 1602static int
1522api_is_ready (SV *coro_sv) 1603api_is_ready (pTHX_ SV *coro_sv)
1523{ 1604{
1524 dTHX;
1525 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1605 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1526} 1606}
1527 1607
1528static void 1608INLINE void
1529prepare_schedule (pTHX_ struct transfer_args *ta) 1609prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1530{ 1610{
1531 SV *prev_sv, *next_sv; 1611 SV *prev_sv, *next_sv;
1532 1612
1533 for (;;) 1613 for (;;)
1534 { 1614 {
1535 LOCK;
1536 next_sv = coro_deq (aTHX); 1615 next_sv = coro_deq (aTHX);
1537 1616
1538 /* nothing to schedule: call the idle handler */ 1617 /* nothing to schedule: call the idle handler */
1539 if (expect_false (!next_sv)) 1618 if (expect_false (!next_sv))
1540 { 1619 {
1541 dSP; 1620 dSP;
1542 UNLOCK;
1543 1621
1544 ENTER; 1622 ENTER;
1545 SAVETMPS; 1623 SAVETMPS;
1546 1624
1547 PUSHMARK (SP); 1625 PUSHMARK (SP);
1548 PUTBACK; 1626 PUTBACK;
1549 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1627 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1550 SPAGAIN;
1551 1628
1552 FREETMPS; 1629 FREETMPS;
1553 LEAVE; 1630 LEAVE;
1554 continue; 1631 continue;
1555 } 1632 }
1556 1633
1557 ta->next = SvSTATE (next_sv); 1634 ta->next = SvSTATE_hv (next_sv);
1558 1635
1559 /* cannot transfer to destroyed coros, skip and look for next */ 1636 /* cannot transfer to destroyed coros, skip and look for next */
1560 if (expect_false (ta->next->flags & CF_DESTROYED)) 1637 if (expect_false (ta->next->flags & CF_DESTROYED))
1561 { 1638 {
1562 UNLOCK;
1563 SvREFCNT_dec (next_sv); 1639 SvREFCNT_dec (next_sv);
1564 /* coro_nready is already taken care of by destroy */ 1640 /* coro_nready has already been taken care of by destroy */
1565 continue; 1641 continue;
1566 } 1642 }
1567 1643
1568 --coro_nready; 1644 --coro_nready;
1569 UNLOCK;
1570 break; 1645 break;
1571 } 1646 }
1572 1647
1573 /* free this only after the transfer */ 1648 /* free this only after the transfer */
1574 prev_sv = SvRV (coro_current); 1649 prev_sv = SvRV (coro_current);
1575 ta->prev = SvSTATE (prev_sv); 1650 ta->prev = SvSTATE_hv (prev_sv);
1576 TRANSFER_CHECK (*ta); 1651 TRANSFER_CHECK (*ta);
1577 assert (ta->next->flags & CF_READY); 1652 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1578 ta->next->flags &= ~CF_READY; 1653 ta->next->flags &= ~CF_READY;
1579 SvRV_set (coro_current, next_sv); 1654 SvRV_set (coro_current, next_sv);
1580 1655
1581 LOCK;
1582 free_coro_mortal (aTHX); 1656 free_coro_mortal (aTHX);
1583 coro_mortal = prev_sv; 1657 coro_mortal = prev_sv;
1584 UNLOCK;
1585} 1658}
1586 1659
1587static void 1660INLINE void
1588prepare_cede (pTHX_ struct transfer_args *ta) 1661prepare_cede (pTHX_ struct coro_transfer_args *ta)
1589{ 1662{
1590 api_ready (coro_current); 1663 api_ready (aTHX_ coro_current);
1591 prepare_schedule (aTHX_ ta); 1664 prepare_schedule (aTHX_ ta);
1592} 1665}
1593 1666
1667INLINE void
1668prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1669{
1670 SV *prev = SvRV (coro_current);
1671
1672 if (coro_nready)
1673 {
1674 prepare_schedule (aTHX_ ta);
1675 api_ready (aTHX_ prev);
1676 }
1677 else
1678 prepare_nop (aTHX_ ta);
1679}
1680
1681static void
1682api_schedule (pTHX)
1683{
1684 struct coro_transfer_args ta;
1685
1686 prepare_schedule (aTHX_ &ta);
1687 TRANSFER (ta, 1);
1688}
1689
1594static int 1690static int
1595prepare_cede_notself (pTHX_ struct transfer_args *ta) 1691api_cede (pTHX)
1596{ 1692{
1597 if (coro_nready) 1693 struct coro_transfer_args ta;
1598 { 1694
1599 SV *prev = SvRV (coro_current);
1600 prepare_schedule (aTHX_ ta); 1695 prepare_cede (aTHX_ &ta);
1601 api_ready (prev); 1696
1697 if (expect_true (ta.prev != ta.next))
1698 {
1699 TRANSFER (ta, 1);
1602 return 1; 1700 return 1;
1603 } 1701 }
1604 else 1702 else
1605 return 0; 1703 return 0;
1606} 1704}
1607 1705
1608static void
1609api_schedule (void)
1610{
1611 dTHX;
1612 struct transfer_args ta;
1613
1614 prepare_schedule (aTHX_ &ta);
1615 TRANSFER (ta, 1);
1616}
1617
1618static int 1706static int
1619api_cede (void) 1707api_cede_notself (pTHX)
1620{ 1708{
1621 dTHX; 1709 if (coro_nready)
1710 {
1622 struct transfer_args ta; 1711 struct coro_transfer_args ta;
1623 1712
1624 prepare_cede (aTHX_ &ta); 1713 prepare_cede_notself (aTHX_ &ta);
1625
1626 if (expect_true (ta.prev != ta.next))
1627 {
1628 TRANSFER (ta, 1); 1714 TRANSFER (ta, 1);
1629 return 1; 1715 return 1;
1630 } 1716 }
1631 else 1717 else
1632 return 0; 1718 return 0;
1633} 1719}
1634 1720
1635static int 1721static void
1636api_cede_notself (void)
1637{
1638 dTHX;
1639 struct transfer_args ta;
1640
1641 if (prepare_cede_notself (aTHX_ &ta))
1642 {
1643 TRANSFER (ta, 1);
1644 return 1;
1645 }
1646 else
1647 return 0;
1648}
1649
1650static void
1651api_trace (SV *coro_sv, int flags) 1722api_trace (pTHX_ SV *coro_sv, int flags)
1652{ 1723{
1653 dTHX;
1654 struct coro *coro = SvSTATE (coro_sv); 1724 struct coro *coro = SvSTATE (coro_sv);
1655 1725
1656 if (flags & CC_TRACE) 1726 if (flags & CC_TRACE)
1657 { 1727 {
1658 if (!coro->cctx) 1728 if (!coro->cctx)
1659 coro->cctx = cctx_new (); 1729 coro->cctx = cctx_new_run ();
1660 else if (!(coro->cctx->flags & CC_TRACE)) 1730 else if (!(coro->cctx->flags & CC_TRACE))
1661 croak ("cannot enable tracing on coroutine with custom stack"); 1731 croak ("cannot enable tracing on coroutine with custom stack,");
1662 1732
1663 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1664 } 1734 }
1665 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1666 { 1736 {
… …
1671 else 1741 else
1672 coro->slot->runops = RUNOPS_DEFAULT; 1742 coro->slot->runops = RUNOPS_DEFAULT;
1673 } 1743 }
1674} 1744}
1675 1745
1676#if 0 1746/*****************************************************************************/
1747/* rouse callback */
1748
1749#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1750
1751static void
1752coro_rouse_callback (pTHX_ CV *cv)
1753{
1754 dXSARGS;
1755 SV *data = (SV *)GENSUB_ARG;
1756
1757 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1758 {
1759 /* first call, set args */
1760 int i;
1761 AV *av = newAV ();
1762 SV *coro = SvRV (data);
1763
1764 SvRV_set (data, (SV *)av);
1765 api_ready (aTHX_ coro);
1766 SvREFCNT_dec (coro);
1767
1768 /* better take a full copy of the arguments */
1769 while (items--)
1770 av_store (av, items, newSVsv (ST (items)));
1771 }
1772
1773 XSRETURN_EMPTY;
1774}
1775
1677static int 1776static int
1678coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1777slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1679{ 1778{
1680 AV *padlist; 1779 SV *data = (SV *)frame->data;
1681 AV *av = (AV *)mg->mg_obj; 1780
1781 if (CORO_THROW)
1782 return 0;
1682 1783
1683 abort (); 1784 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1785 return 1;
1786
1787 /* now push all results on the stack */
1788 {
1789 dSP;
1790 AV *av = (AV *)SvRV (data);
1791 int i;
1792
1793 EXTEND (SP, AvFILLp (av) + 1);
1794 for (i = 0; i <= AvFILLp (av); ++i)
1795 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1796
1797 /* we have stolen the elements, so ste length to zero and free */
1798 AvFILLp (av) = -1;
1799 av_undef (av);
1800
1801 PUTBACK;
1802 }
1684 1803
1685 return 0; 1804 return 0;
1686} 1805}
1687 1806
1688static MGVTBL coro_gensub_vtbl = { 1807static void
1689 0, 0, 0, 0, 1808slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1690 coro_gensub_free 1809{
1691}; 1810 SV *cb;
1692#endif 1811
1812 if (items)
1813 cb = arg [0];
1814 else
1815 {
1816 struct coro *coro = SvSTATE_current;
1817
1818 if (!coro->rouse_cb)
1819 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1820
1821 cb = sv_2mortal (coro->rouse_cb);
1822 coro->rouse_cb = 0;
1823 }
1824
1825 if (!SvROK (cb)
1826 || SvTYPE (SvRV (cb)) != SVt_PVCV
1827 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1828 croak ("Coro::rouse_wait called with illegal callback argument,");
1829
1830 {
1831 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1832 SV *data = (SV *)GENSUB_ARG;
1833
1834 frame->data = (void *)data;
1835 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1836 frame->check = slf_check_rouse_wait;
1837 }
1838}
1839
1840static SV *
1841coro_new_rouse_cb (pTHX)
1842{
1843 HV *hv = (HV *)SvRV (coro_current);
1844 struct coro *coro = SvSTATE_hv (hv);
1845 SV *data = newRV_inc ((SV *)hv);
1846 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1847
1848 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1849 SvREFCNT_dec (data); /* magicext increases the refcount */
1850
1851 SvREFCNT_dec (coro->rouse_cb);
1852 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1853
1854 return cb;
1855}
1856
1857/*****************************************************************************/
1858/* schedule-like-function opcode (SLF) */
1859
1860static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1861static const CV *slf_cv;
1862static SV **slf_argv;
1863static int slf_argc, slf_arga; /* count, allocated */
1864static I32 slf_ax; /* top of stack, for restore */
1865
1866/* this restores the stack in the case we patched the entersub, to */
1867/* recreate the stack frame as perl will on following calls */
1868/* since entersub cleared the stack */
1869static OP *
1870pp_restore (pTHX)
1871{
1872 int i;
1873 SV **SP = PL_stack_base + slf_ax;
1874
1875 PUSHMARK (SP);
1876
1877 EXTEND (SP, slf_argc + 1);
1878
1879 for (i = 0; i < slf_argc; ++i)
1880 PUSHs (sv_2mortal (slf_argv [i]));
1881
1882 PUSHs ((SV *)CvGV (slf_cv));
1883
1884 RETURNOP (slf_restore.op_first);
1885}
1886
1887static void
1888slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1889{
1890 SV **arg = (SV **)slf_frame.data;
1891
1892 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1893}
1894
1895static void
1896slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1897{
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1900
1901 frame->prepare = slf_prepare_transfer;
1902 frame->check = slf_check_nop;
1903 frame->data = (void *)arg; /* let's hope it will stay valid */
1904}
1905
1906static void
1907slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1908{
1909 frame->prepare = prepare_schedule;
1910 frame->check = slf_check_nop;
1911}
1912
1913static void
1914slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1915{
1916 frame->prepare = prepare_cede;
1917 frame->check = slf_check_nop;
1918}
1919
1920static void
1921slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1922{
1923 frame->prepare = prepare_cede_notself;
1924 frame->check = slf_check_nop;
1925}
1926
1927/*
1928 * these not obviously related functions are all rolled into one
1929 * function to increase chances that they all will call transfer with the same
1930 * stack offset
1931 * SLF stands for "schedule-like-function".
1932 */
1933static OP *
1934pp_slf (pTHX)
1935{
1936 I32 checkmark; /* mark SP to see how many elements check has pushed */
1937
1938 /* set up the slf frame, unless it has already been set-up */
1939 /* the latter happens when a new coro has been started */
1940 /* or when a new cctx was attached to an existing coroutine */
1941 if (expect_true (!slf_frame.prepare))
1942 {
1943 /* first iteration */
1944 dSP;
1945 SV **arg = PL_stack_base + TOPMARK + 1;
1946 int items = SP - arg; /* args without function object */
1947 SV *gv = *sp;
1948
1949 /* do a quick consistency check on the "function" object, and if it isn't */
1950 /* for us, divert to the real entersub */
1951 if (SvTYPE (gv) != SVt_PVGV
1952 || !GvCV (gv)
1953 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1954 return PL_ppaddr[OP_ENTERSUB](aTHX);
1955
1956 if (!(PL_op->op_flags & OPf_STACKED))
1957 {
1958 /* ampersand-form of call, use @_ instead of stack */
1959 AV *av = GvAV (PL_defgv);
1960 arg = AvARRAY (av);
1961 items = AvFILLp (av) + 1;
1962 }
1963
1964 /* now call the init function, which needs to set up slf_frame */
1965 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1966 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1967
1968 /* pop args */
1969 SP = PL_stack_base + POPMARK;
1970
1971 PUTBACK;
1972 }
1973
1974 /* now that we have a slf_frame, interpret it! */
1975 /* we use a callback system not to make the code needlessly */
1976 /* complicated, but so we can run multiple perl coros from one cctx */
1977
1978 do
1979 {
1980 struct coro_transfer_args ta;
1981
1982 slf_frame.prepare (aTHX_ &ta);
1983 TRANSFER (ta, 0);
1984
1985 checkmark = PL_stack_sp - PL_stack_base;
1986 }
1987 while (slf_frame.check (aTHX_ &slf_frame));
1988
1989 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1990
1991 /* exception handling */
1992 if (expect_false (CORO_THROW))
1993 {
1994 SV *exception = sv_2mortal (CORO_THROW);
1995
1996 CORO_THROW = 0;
1997 sv_setsv (ERRSV, exception);
1998 croak (0);
1999 }
2000
2001 /* return value handling - mostly like entersub */
2002 /* make sure we put something on the stack in scalar context */
2003 if (GIMME_V == G_SCALAR)
2004 {
2005 dSP;
2006 SV **bot = PL_stack_base + checkmark;
2007
2008 if (sp == bot) /* too few, push undef */
2009 bot [1] = &PL_sv_undef;
2010 else if (sp != bot + 1) /* too many, take last one */
2011 bot [1] = *sp;
2012
2013 SP = bot + 1;
2014
2015 PUTBACK;
2016 }
2017
2018 return NORMAL;
2019}
2020
2021static void
2022api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2023{
2024 int i;
2025 SV **arg = PL_stack_base + ax;
2026 int items = PL_stack_sp - arg + 1;
2027
2028 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2029
2030 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2031 && PL_op->op_ppaddr != pp_slf)
2032 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2033
2034 CvFLAGS (cv) |= CVf_SLF;
2035 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2036 slf_cv = cv;
2037
2038 /* we patch the op, and then re-run the whole call */
2039 /* we have to put the same argument on the stack for this to work */
2040 /* and this will be done by pp_restore */
2041 slf_restore.op_next = (OP *)&slf_restore;
2042 slf_restore.op_type = OP_CUSTOM;
2043 slf_restore.op_ppaddr = pp_restore;
2044 slf_restore.op_first = PL_op;
2045
2046 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2047
2048 if (PL_op->op_flags & OPf_STACKED)
2049 {
2050 if (items > slf_arga)
2051 {
2052 slf_arga = items;
2053 free (slf_argv);
2054 slf_argv = malloc (slf_arga * sizeof (SV *));
2055 }
2056
2057 slf_argc = items;
2058
2059 for (i = 0; i < items; ++i)
2060 slf_argv [i] = SvREFCNT_inc (arg [i]);
2061 }
2062 else
2063 slf_argc = 0;
2064
2065 PL_op->op_ppaddr = pp_slf;
2066 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2067
2068 PL_op = (OP *)&slf_restore;
2069}
1693 2070
1694/*****************************************************************************/ 2071/*****************************************************************************/
1695/* PerlIO::cede */ 2072/* PerlIO::cede */
1696 2073
1697typedef struct 2074typedef struct
… …
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2102 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime (); 2103 double now = nvtime ();
1727 2104
1728 if (now >= self->next) 2105 if (now >= self->next)
1729 { 2106 {
1730 api_cede (); 2107 api_cede (aTHX);
1731 self->next = now + self->every; 2108 self->next = now + self->every;
1732 } 2109 }
1733 2110
1734 return PerlIOBuf_flush (aTHX_ f); 2111 return PerlIOBuf_flush (aTHX_ f);
1735} 2112}
… …
1764 PerlIOBuf_get_ptr, 2141 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt, 2142 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2143 PerlIOBuf_set_ptrcnt,
1767}; 2144};
1768 2145
2146/*****************************************************************************/
2147/* Coro::Semaphore & Coro::Signal */
2148
2149static SV *
2150coro_waitarray_new (pTHX_ int count)
2151{
2152 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2153 AV *av = newAV ();
2154 SV **ary;
2155
2156 /* unfortunately, building manually saves memory */
2157 Newx (ary, 2, SV *);
2158 AvALLOC (av) = ary;
2159 /*AvARRAY (av) = ary;*/
2160 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2161 AvMAX (av) = 1;
2162 AvFILLp (av) = 0;
2163 ary [0] = newSViv (count);
2164
2165 return newRV_noinc ((SV *)av);
2166}
2167
2168/* semaphore */
2169
2170static void
2171coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2172{
2173 SV *count_sv = AvARRAY (av)[0];
2174 IV count = SvIVX (count_sv);
2175
2176 count += adjust;
2177 SvIVX (count_sv) = count;
2178
2179 /* now wake up as many waiters as are expected to lock */
2180 while (count > 0 && AvFILLp (av) > 0)
2181 {
2182 SV *cb;
2183
2184 /* swap first two elements so we can shift a waiter */
2185 AvARRAY (av)[0] = AvARRAY (av)[1];
2186 AvARRAY (av)[1] = count_sv;
2187 cb = av_shift (av);
2188
2189 if (SvOBJECT (cb))
2190 {
2191 api_ready (aTHX_ cb);
2192 --count;
2193 }
2194 else if (SvTYPE (cb) == SVt_PVCV)
2195 {
2196 dSP;
2197 PUSHMARK (SP);
2198 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2199 PUTBACK;
2200 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2201 }
2202
2203 SvREFCNT_dec (cb);
2204 }
2205}
2206
2207static void
2208coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2209{
2210 /* call $sem->adjust (0) to possibly wake up some other waiters */
2211 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2212}
2213
2214static int
2215slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2216{
2217 AV *av = (AV *)frame->data;
2218 SV *count_sv = AvARRAY (av)[0];
2219
2220 /* if we are about to throw, don't actually acquire the lock, just throw */
2221 if (CORO_THROW)
2222 return 0;
2223 else if (SvIVX (count_sv) > 0)
2224 {
2225 SvSTATE_current->on_destroy = 0;
2226
2227 if (acquire)
2228 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2229 else
2230 coro_semaphore_adjust (aTHX_ av, 0);
2231
2232 return 0;
2233 }
2234 else
2235 {
2236 int i;
2237 /* if we were woken up but can't down, we look through the whole */
2238 /* waiters list and only add us if we aren't in there already */
2239 /* this avoids some degenerate memory usage cases */
2240
2241 for (i = 1; i <= AvFILLp (av); ++i)
2242 if (AvARRAY (av)[i] == SvRV (coro_current))
2243 return 1;
2244
2245 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2246 return 1;
2247 }
2248}
2249
2250static int
2251slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2252{
2253 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2254}
2255
2256static int
2257slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2258{
2259 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2260}
2261
2262static void
2263slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2264{
2265 AV *av = (AV *)SvRV (arg [0]);
2266
2267 if (SvIVX (AvARRAY (av)[0]) > 0)
2268 {
2269 frame->data = (void *)av;
2270 frame->prepare = prepare_nop;
2271 }
2272 else
2273 {
2274 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2275
2276 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2277 frame->prepare = prepare_schedule;
2278
2279 /* to avoid race conditions when a woken-up coro gets terminated */
2280 /* we arrange for a temporary on_destroy that calls adjust (0) */
2281 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2282 }
2283}
2284
2285static void
2286slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2287{
2288 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2289 frame->check = slf_check_semaphore_down;
2290}
2291
2292static void
2293slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2294{
2295 if (items >= 2)
2296 {
2297 /* callback form */
2298 AV *av = (AV *)SvRV (arg [0]);
2299 CV *cb_cv = coro_sv_2cv (arg [1]);
2300
2301 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2302
2303 if (SvIVX (AvARRAY (av)[0]) > 0)
2304 coro_semaphore_adjust (aTHX_ av, 0);
2305
2306 frame->prepare = prepare_nop;
2307 frame->check = slf_check_nop;
2308 }
2309 else
2310 {
2311 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2312 frame->check = slf_check_semaphore_wait;
2313 }
2314}
2315
2316/* signal */
2317
2318static void
2319coro_signal_wake (pTHX_ AV *av, int count)
2320{
2321 SvIVX (AvARRAY (av)[0]) = 0;
2322
2323 /* now signal count waiters */
2324 while (count > 0 && AvFILLp (av) > 0)
2325 {
2326 SV *cb;
2327
2328 /* swap first two elements so we can shift a waiter */
2329 cb = AvARRAY (av)[0];
2330 AvARRAY (av)[0] = AvARRAY (av)[1];
2331 AvARRAY (av)[1] = cb;
2332
2333 cb = av_shift (av);
2334
2335 api_ready (aTHX_ cb);
2336 sv_setiv (cb, 0); /* signal waiter */
2337 SvREFCNT_dec (cb);
2338
2339 --count;
2340 }
2341}
2342
2343static int
2344slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2345{
2346 /* if we are about to throw, also stop waiting */
2347 return SvROK ((SV *)frame->data) && !CORO_THROW;
2348}
2349
2350static void
2351slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2352{
2353 AV *av = (AV *)SvRV (arg [0]);
2354
2355 if (SvIVX (AvARRAY (av)[0]))
2356 {
2357 SvIVX (AvARRAY (av)[0]) = 0;
2358 frame->prepare = prepare_nop;
2359 frame->check = slf_check_nop;
2360 }
2361 else
2362 {
2363 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2364
2365 av_push (av, waiter);
2366
2367 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2368 frame->prepare = prepare_schedule;
2369 frame->check = slf_check_signal_wait;
2370 }
2371}
2372
2373/*****************************************************************************/
2374/* Coro::AIO */
2375
2376#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2377
2378/* helper storage struct */
2379struct io_state
2380{
2381 int errorno;
2382 I32 laststype; /* U16 in 5.10.0 */
2383 int laststatval;
2384 Stat_t statcache;
2385};
2386
2387static void
2388coro_aio_callback (pTHX_ CV *cv)
2389{
2390 dXSARGS;
2391 AV *state = (AV *)GENSUB_ARG;
2392 SV *coro = av_pop (state);
2393 SV *data_sv = newSV (sizeof (struct io_state));
2394
2395 av_extend (state, items);
2396
2397 sv_upgrade (data_sv, SVt_PV);
2398 SvCUR_set (data_sv, sizeof (struct io_state));
2399 SvPOK_only (data_sv);
2400
2401 {
2402 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2403
2404 data->errorno = errno;
2405 data->laststype = PL_laststype;
2406 data->laststatval = PL_laststatval;
2407 data->statcache = PL_statcache;
2408 }
2409
2410 /* now build the result vector out of all the parameters and the data_sv */
2411 {
2412 int i;
2413
2414 for (i = 0; i < items; ++i)
2415 av_push (state, SvREFCNT_inc_NN (ST (i)));
2416 }
2417
2418 av_push (state, data_sv);
2419
2420 api_ready (aTHX_ coro);
2421 SvREFCNT_dec (coro);
2422 SvREFCNT_dec ((AV *)state);
2423}
2424
2425static int
2426slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2427{
2428 AV *state = (AV *)frame->data;
2429
2430 /* if we are about to throw, return early */
2431 /* this does not cancel the aio request, but at least */
2432 /* it quickly returns */
2433 if (CORO_THROW)
2434 return 0;
2435
2436 /* one element that is an RV? repeat! */
2437 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2438 return 1;
2439
2440 /* restore status */
2441 {
2442 SV *data_sv = av_pop (state);
2443 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2444
2445 errno = data->errorno;
2446 PL_laststype = data->laststype;
2447 PL_laststatval = data->laststatval;
2448 PL_statcache = data->statcache;
2449
2450 SvREFCNT_dec (data_sv);
2451 }
2452
2453 /* push result values */
2454 {
2455 dSP;
2456 int i;
2457
2458 EXTEND (SP, AvFILLp (state) + 1);
2459 for (i = 0; i <= AvFILLp (state); ++i)
2460 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2461
2462 PUTBACK;
2463 }
2464
2465 return 0;
2466}
2467
2468static void
2469slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2470{
2471 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2472 SV *coro_hv = SvRV (coro_current);
2473 struct coro *coro = SvSTATE_hv (coro_hv);
2474
2475 /* put our coroutine id on the state arg */
2476 av_push (state, SvREFCNT_inc_NN (coro_hv));
2477
2478 /* first see whether we have a non-zero priority and set it as AIO prio */
2479 if (coro->prio)
2480 {
2481 dSP;
2482
2483 static SV *prio_cv;
2484 static SV *prio_sv;
2485
2486 if (expect_false (!prio_cv))
2487 {
2488 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2489 prio_sv = newSViv (0);
2490 }
2491
2492 PUSHMARK (SP);
2493 sv_setiv (prio_sv, coro->prio);
2494 XPUSHs (prio_sv);
2495
2496 PUTBACK;
2497 call_sv (prio_cv, G_VOID | G_DISCARD);
2498 }
2499
2500 /* now call the original request */
2501 {
2502 dSP;
2503 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2504 int i;
2505
2506 PUSHMARK (SP);
2507
2508 /* first push all args to the stack */
2509 EXTEND (SP, items + 1);
2510
2511 for (i = 0; i < items; ++i)
2512 PUSHs (arg [i]);
2513
2514 /* now push the callback closure */
2515 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2516
2517 /* now call the AIO function - we assume our request is uncancelable */
2518 PUTBACK;
2519 call_sv ((SV *)req, G_VOID | G_DISCARD);
2520 }
2521
2522 /* now that the requets is going, we loop toll we have a result */
2523 frame->data = (void *)state;
2524 frame->prepare = prepare_schedule;
2525 frame->check = slf_check_aio_req;
2526}
2527
2528static void
2529coro_aio_req_xs (pTHX_ CV *cv)
2530{
2531 dXSARGS;
2532
2533 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2534
2535 XSRETURN_EMPTY;
2536}
2537
2538/*****************************************************************************/
1769 2539
1770MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2540MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1771 2541
1772PROTOTYPES: DISABLE 2542PROTOTYPES: DISABLE
1773 2543
1774BOOT: 2544BOOT:
1775{ 2545{
1776#ifdef USE_ITHREADS 2546#ifdef USE_ITHREADS
1777 MUTEX_INIT (&coro_lock);
1778# if CORO_PTHREAD 2547# if CORO_PTHREAD
1779 coro_thx = PERL_GET_CONTEXT; 2548 coro_thx = PERL_GET_CONTEXT;
1780# endif 2549# endif
1781#endif 2550#endif
1782 BOOT_PAGESIZE; 2551 BOOT_PAGESIZE;
… …
1803 main_top_env = PL_top_env; 2572 main_top_env = PL_top_env;
1804 2573
1805 while (main_top_env->je_prev) 2574 while (main_top_env->je_prev)
1806 main_top_env = main_top_env->je_prev; 2575 main_top_env = main_top_env->je_prev;
1807 2576
2577 {
2578 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2579
2580 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2581 hv_store_ent (PL_custom_op_names, slf,
2582 newSVpv ("coro_slf", 0), 0);
2583
2584 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2585 hv_store_ent (PL_custom_op_descs, slf,
2586 newSVpv ("coro schedule like function", 0), 0);
2587 }
2588
1808 coroapi.ver = CORO_API_VERSION; 2589 coroapi.ver = CORO_API_VERSION;
1809 coroapi.rev = CORO_API_REVISION; 2590 coroapi.rev = CORO_API_REVISION;
2591
1810 coroapi.transfer = api_transfer; 2592 coroapi.transfer = api_transfer;
2593
2594 coroapi.sv_state = SvSTATE_;
2595 coroapi.execute_slf = api_execute_slf;
2596 coroapi.prepare_nop = prepare_nop;
2597 coroapi.prepare_schedule = prepare_schedule;
2598 coroapi.prepare_cede = prepare_cede;
2599 coroapi.prepare_cede_notself = prepare_cede_notself;
1811 2600
1812 { 2601 {
1813 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2602 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1814 2603
1815 if (!svp) croak ("Time::HiRes is required"); 2604 if (!svp) croak ("Time::HiRes is required");
… …
1826 CODE: 2615 CODE:
1827{ 2616{
1828 struct coro *coro; 2617 struct coro *coro;
1829 MAGIC *mg; 2618 MAGIC *mg;
1830 HV *hv; 2619 HV *hv;
2620 CV *cb;
1831 int i; 2621 int i;
2622
2623 if (items > 1)
2624 {
2625 cb = coro_sv_2cv (ST (1));
2626
2627 if (CvISXSUB (cb))
2628 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2629
2630 if (!CvROOT (cb))
2631 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2632 }
1832 2633
1833 Newz (0, coro, 1, struct coro); 2634 Newz (0, coro, 1, struct coro);
1834 coro->args = newAV (); 2635 coro->args = newAV ();
1835 coro->flags = CF_NEW; 2636 coro->flags = CF_NEW;
1836 2637
… …
1841 coro->hv = hv = newHV (); 2642 coro->hv = hv = newHV ();
1842 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2643 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1843 mg->mg_flags |= MGf_DUP; 2644 mg->mg_flags |= MGf_DUP;
1844 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2645 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1845 2646
2647 if (items > 1)
2648 {
2649 coro->startcv = SvREFCNT_inc_NN (cb);
2650
1846 av_extend (coro->args, items - 1); 2651 av_extend (coro->args, items - 1);
2652 av_push (coro->args, SvREFCNT_inc (cb));
1847 for (i = 1; i < items; i++) 2653 for (i = 2; i < items; i++)
1848 av_push (coro->args, newSVsv (ST (i))); 2654 av_push (coro->args, newSVsv (ST (i)));
2655 }
1849} 2656}
1850 OUTPUT: 2657 OUTPUT:
1851 RETVAL 2658 RETVAL
1852 2659
1853# these not obviously related functions are all rolled into the same xs
1854# function to increase chances that they all will call transfer with the same
1855# stack offset
1856void 2660void
1857_set_stacklevel (...) 2661transfer (...)
1858 ALIAS: 2662 PROTOTYPE: $$
1859 Coro::State::transfer = 1 2663 CODE:
1860 Coro::schedule = 2 2664 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1861 Coro::cede = 3
1862 Coro::cede_notself = 4
1863 CODE:
1864{
1865 struct transfer_args ta;
1866
1867 PUTBACK;
1868 switch (ix)
1869 {
1870 case 0:
1871 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1872 ta.next = 0;
1873 break;
1874
1875 case 1:
1876 if (items != 2)
1877 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1878
1879 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1880 break;
1881
1882 case 2:
1883 prepare_schedule (aTHX_ &ta);
1884 break;
1885
1886 case 3:
1887 prepare_cede (aTHX_ &ta);
1888 break;
1889
1890 case 4:
1891 if (!prepare_cede_notself (aTHX_ &ta))
1892 XSRETURN_EMPTY;
1893
1894 break;
1895 }
1896 SPAGAIN;
1897
1898 BARRIER;
1899 PUTBACK;
1900 TRANSFER (ta, 0);
1901 SPAGAIN; /* might be the sp of a different coroutine now */
1902 /* be extra careful not to ever do anything after TRANSFER */
1903}
1904 2665
1905bool 2666bool
1906_destroy (SV *coro_sv) 2667_destroy (SV *coro_sv)
1907 CODE: 2668 CODE:
1908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2669 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1915 CODE: 2676 CODE:
1916 _exit (code); 2677 _exit (code);
1917 2678
1918int 2679int
1919cctx_stacksize (int new_stacksize = 0) 2680cctx_stacksize (int new_stacksize = 0)
2681 PROTOTYPE: ;$
1920 CODE: 2682 CODE:
1921 RETVAL = cctx_stacksize; 2683 RETVAL = cctx_stacksize;
1922 if (new_stacksize) 2684 if (new_stacksize)
1923 { 2685 {
1924 cctx_stacksize = new_stacksize; 2686 cctx_stacksize = new_stacksize;
… …
1927 OUTPUT: 2689 OUTPUT:
1928 RETVAL 2690 RETVAL
1929 2691
1930int 2692int
1931cctx_max_idle (int max_idle = 0) 2693cctx_max_idle (int max_idle = 0)
2694 PROTOTYPE: ;$
1932 CODE: 2695 CODE:
1933 RETVAL = cctx_max_idle; 2696 RETVAL = cctx_max_idle;
1934 if (max_idle > 1) 2697 if (max_idle > 1)
1935 cctx_max_idle = max_idle; 2698 cctx_max_idle = max_idle;
1936 OUTPUT: 2699 OUTPUT:
1937 RETVAL 2700 RETVAL
1938 2701
1939int 2702int
1940cctx_count () 2703cctx_count ()
2704 PROTOTYPE:
1941 CODE: 2705 CODE:
1942 RETVAL = cctx_count; 2706 RETVAL = cctx_count;
1943 OUTPUT: 2707 OUTPUT:
1944 RETVAL 2708 RETVAL
1945 2709
1946int 2710int
1947cctx_idle () 2711cctx_idle ()
2712 PROTOTYPE:
1948 CODE: 2713 CODE:
1949 RETVAL = cctx_idle; 2714 RETVAL = cctx_idle;
1950 OUTPUT: 2715 OUTPUT:
1951 RETVAL 2716 RETVAL
1952 2717
1953void 2718void
1954list () 2719list ()
2720 PROTOTYPE:
1955 PPCODE: 2721 PPCODE:
1956{ 2722{
1957 struct coro *coro; 2723 struct coro *coro;
1958 for (coro = coro_first; coro; coro = coro->next) 2724 for (coro = coro_first; coro; coro = coro->next)
1959 if (coro->hv) 2725 if (coro->hv)
… …
2018 RETVAL = boolSV (coro->flags & ix); 2784 RETVAL = boolSV (coro->flags & ix);
2019 OUTPUT: 2785 OUTPUT:
2020 RETVAL 2786 RETVAL
2021 2787
2022void 2788void
2789throw (Coro::State self, SV *throw = &PL_sv_undef)
2790 PROTOTYPE: $;$
2791 CODE:
2792{
2793 struct coro *current = SvSTATE_current;
2794 SV **throwp = self == current ? &CORO_THROW : &self->except;
2795 SvREFCNT_dec (*throwp);
2796 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2797}
2798
2799void
2023api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2800api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2801 PROTOTYPE: $;$
2802 C_ARGS: aTHX_ coro, flags
2024 2803
2025SV * 2804SV *
2026has_cctx (Coro::State coro) 2805has_cctx (Coro::State coro)
2027 PROTOTYPE: $ 2806 PROTOTYPE: $
2028 CODE: 2807 CODE:
… …
2052 OUTPUT: 2831 OUTPUT:
2053 RETVAL 2832 RETVAL
2054 2833
2055void 2834void
2056force_cctx () 2835force_cctx ()
2836 PROTOTYPE:
2057 CODE: 2837 CODE:
2058 struct coro *coro = SvSTATE (coro_current);
2059 coro->cctx->idle_sp = 0; 2838 SvSTATE_current->cctx->idle_sp = 0;
2060 2839
2061void 2840void
2062swap_defsv (Coro::State self) 2841swap_defsv (Coro::State self)
2063 PROTOTYPE: $ 2842 PROTOTYPE: $
2064 ALIAS: 2843 ALIAS:
2065 swap_defav = 1 2844 swap_defav = 1
2066 CODE: 2845 CODE:
2067 if (!self->slot) 2846 if (!self->slot)
2068 croak ("cannot swap state with coroutine that has no saved state"); 2847 croak ("cannot swap state with coroutine that has no saved state,");
2069 else 2848 else
2070 { 2849 {
2071 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2850 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2072 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2851 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2073 2852
2074 SV *tmp = *src; *src = *dst; *dst = tmp; 2853 SV *tmp = *src; *src = *dst; *dst = tmp;
2075 } 2854 }
2855
2076 2856
2077MODULE = Coro::State PACKAGE = Coro 2857MODULE = Coro::State PACKAGE = Coro
2078 2858
2079BOOT: 2859BOOT:
2080{ 2860{
… …
2098 2878
2099 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2879 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2100 coro_ready[i] = newAV (); 2880 coro_ready[i] = newAV ();
2101 2881
2102 { 2882 {
2103 SV *sv = perl_get_sv ("Coro::API", TRUE); 2883 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2104 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2105 2884
2106 coroapi.schedule = api_schedule; 2885 coroapi.schedule = api_schedule;
2107 coroapi.cede = api_cede; 2886 coroapi.cede = api_cede;
2108 coroapi.cede_notself = api_cede_notself; 2887 coroapi.cede_notself = api_cede_notself;
2109 coroapi.ready = api_ready; 2888 coroapi.ready = api_ready;
2110 coroapi.is_ready = api_is_ready; 2889 coroapi.is_ready = api_is_ready;
2111 coroapi.nready = &coro_nready; 2890 coroapi.nready = coro_nready;
2112 coroapi.current = coro_current; 2891 coroapi.current = coro_current;
2113 2892
2114 GCoroAPI = &coroapi; 2893 /*GCoroAPI = &coroapi;*/
2115 sv_setiv (sv, (IV)&coroapi); 2894 sv_setiv (sv, (IV)&coroapi);
2116 SvREADONLY_on (sv); 2895 SvREADONLY_on (sv);
2117 } 2896 }
2118} 2897}
2898
2899void
2900schedule (...)
2901 CODE:
2902 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2903
2904void
2905cede (...)
2906 CODE:
2907 CORO_EXECUTE_SLF_XS (slf_init_cede);
2908
2909void
2910cede_notself (...)
2911 CODE:
2912 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2119 2913
2120void 2914void
2121_set_current (SV *current) 2915_set_current (SV *current)
2122 PROTOTYPE: $ 2916 PROTOTYPE: $
2123 CODE: 2917 CODE:
… …
2126 2920
2127void 2921void
2128_set_readyhook (SV *hook) 2922_set_readyhook (SV *hook)
2129 PROTOTYPE: $ 2923 PROTOTYPE: $
2130 CODE: 2924 CODE:
2131 LOCK;
2132 SvREFCNT_dec (coro_readyhook); 2925 SvREFCNT_dec (coro_readyhook);
2133 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2926 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2134 UNLOCK;
2135 2927
2136int 2928int
2137prio (Coro::State coro, int newprio = 0) 2929prio (Coro::State coro, int newprio = 0)
2930 PROTOTYPE: $;$
2138 ALIAS: 2931 ALIAS:
2139 nice = 1 2932 nice = 1
2140 CODE: 2933 CODE:
2141{ 2934{
2142 RETVAL = coro->prio; 2935 RETVAL = coro->prio;
… …
2157 2950
2158SV * 2951SV *
2159ready (SV *self) 2952ready (SV *self)
2160 PROTOTYPE: $ 2953 PROTOTYPE: $
2161 CODE: 2954 CODE:
2162 RETVAL = boolSV (api_ready (self)); 2955 RETVAL = boolSV (api_ready (aTHX_ self));
2163 OUTPUT: 2956 OUTPUT:
2164 RETVAL 2957 RETVAL
2165 2958
2166int 2959int
2167nready (...) 2960nready (...)
… …
2169 CODE: 2962 CODE:
2170 RETVAL = coro_nready; 2963 RETVAL = coro_nready;
2171 OUTPUT: 2964 OUTPUT:
2172 RETVAL 2965 RETVAL
2173 2966
2174void
2175throw (Coro::State self, SV *throw = &PL_sv_undef)
2176 PROTOTYPE: $;$
2177 CODE:
2178 SvREFCNT_dec (self->throw);
2179 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2180
2181# for async_pool speedup 2967# for async_pool speedup
2182void 2968void
2183_pool_1 (SV *cb) 2969_pool_1 (SV *cb)
2184 CODE: 2970 CODE:
2185{ 2971{
2186 struct coro *coro = SvSTATE (coro_current);
2187 HV *hv = (HV *)SvRV (coro_current); 2972 HV *hv = (HV *)SvRV (coro_current);
2973 struct coro *coro = SvSTATE_hv ((SV *)hv);
2188 AV *defav = GvAV (PL_defgv); 2974 AV *defav = GvAV (PL_defgv);
2189 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2975 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2190 AV *invoke_av; 2976 AV *invoke_av;
2191 int i, len; 2977 int i, len;
2192 2978
… …
2213 { 2999 {
2214 av_fill (defav, len - 1); 3000 av_fill (defav, len - 1);
2215 for (i = 0; i < len; ++i) 3001 for (i = 0; i < len; ++i)
2216 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3002 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2217 } 3003 }
2218
2219 SvREFCNT_dec (invoke);
2220} 3004}
2221 3005
2222void 3006void
2223_pool_2 (SV *cb) 3007_pool_2 (SV *cb)
2224 CODE: 3008 CODE:
2225{ 3009{
2226 struct coro *coro = SvSTATE (coro_current); 3010 HV *hv = (HV *)SvRV (coro_current);
3011 struct coro *coro = SvSTATE_hv ((SV *)hv);
2227 3012
2228 sv_setsv (cb, &PL_sv_undef); 3013 sv_setsv (cb, &PL_sv_undef);
2229 3014
2230 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3015 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2231 coro->saved_deffh = 0; 3016 coro->saved_deffh = 0;
… …
2238 SvREFCNT_dec (old); 3023 SvREFCNT_dec (old);
2239 croak ("\3async_pool terminate\2\n"); 3024 croak ("\3async_pool terminate\2\n");
2240 } 3025 }
2241 3026
2242 av_clear (GvAV (PL_defgv)); 3027 av_clear (GvAV (PL_defgv));
2243 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3028 hv_store (hv, "desc", sizeof ("desc") - 1,
2244 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3029 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2245 3030
2246 coro->prio = 0; 3031 coro->prio = 0;
2247 3032
2248 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3033 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2249 api_trace (coro_current, 0); 3034 api_trace (aTHX_ coro_current, 0);
2250 3035
2251 av_push (av_async_pool, newSVsv (coro_current)); 3036 av_push (av_async_pool, newSVsv (coro_current));
2252} 3037}
2253 3038
2254#if 0
2255
2256void
2257_generator_call (...)
2258 PROTOTYPE: @
2259 PPCODE:
2260 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2261 xxxx
2262 abort ();
2263
2264SV * 3039SV *
2265gensub (SV *sub, ...) 3040rouse_cb ()
2266 PROTOTYPE: &;@ 3041 PROTOTYPE:
2267 CODE: 3042 CODE:
2268{ 3043 RETVAL = coro_new_rouse_cb (aTHX);
2269 struct coro *coro;
2270 MAGIC *mg;
2271 CV *xcv;
2272 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2273 int i;
2274
2275 CvGV (ncv) = CvGV (cv);
2276 CvFILE (ncv) = CvFILE (cv);
2277
2278 Newz (0, coro, 1, struct coro);
2279 coro->args = newAV ();
2280 coro->flags = CF_NEW;
2281
2282 av_extend (coro->args, items - 1);
2283 for (i = 1; i < items; i++)
2284 av_push (coro->args, newSVsv (ST (i)));
2285
2286 CvISXSUB_on (ncv);
2287 CvXSUBANY (ncv).any_ptr = (void *)coro;
2288
2289 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2290
2291 CvXSUB (ncv) = CvXSUB (xcv);
2292 CvANON_on (ncv);
2293
2294 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2295 RETVAL = newRV_noinc ((SV *)ncv);
2296}
2297 OUTPUT: 3044 OUTPUT:
2298 RETVAL 3045 RETVAL
2299 3046
2300#endif
2301
2302
2303MODULE = Coro::State PACKAGE = Coro::AIO
2304
2305void 3047void
2306_get_state (SV *self) 3048rouse_wait (...)
3049 PROTOTYPE: ;$
2307 PPCODE: 3050 PPCODE:
2308{ 3051 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2309 AV *defav = GvAV (PL_defgv);
2310 AV *av = newAV ();
2311 int i;
2312 SV *data_sv = newSV (sizeof (struct io_state));
2313 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2314 SvCUR_set (data_sv, sizeof (struct io_state));
2315 SvPOK_only (data_sv);
2316 3052
2317 data->errorno = errno;
2318 data->laststype = PL_laststype;
2319 data->laststatval = PL_laststatval;
2320 data->statcache = PL_statcache;
2321 3053
2322 av_extend (av, AvFILLp (defav) + 1 + 1); 3054MODULE = Coro::State PACKAGE = PerlIO::cede
2323 3055
2324 for (i = 0; i <= AvFILLp (defav); ++i) 3056BOOT:
2325 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3057 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2326 3058
2327 av_push (av, data_sv);
2328 3059
2329 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3060MODULE = Coro::State PACKAGE = Coro::Semaphore
2330 3061
2331 api_ready (self); 3062SV *
2332} 3063new (SV *klass, SV *count = 0)
3064 CODE:
3065 RETVAL = sv_bless (
3066 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3067 GvSTASH (CvGV (cv))
3068 );
3069 OUTPUT:
3070 RETVAL
3071
3072# helper for Coro::Channel
3073SV *
3074_alloc (int count)
3075 CODE:
3076 RETVAL = coro_waitarray_new (aTHX_ count);
3077 OUTPUT:
3078 RETVAL
3079
3080SV *
3081count (SV *self)
3082 CODE:
3083 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3084 OUTPUT:
3085 RETVAL
2333 3086
2334void 3087void
2335_set_state (SV *state) 3088up (SV *self, int adjust = 1)
2336 PROTOTYPE: $ 3089 ALIAS:
3090 adjust = 1
3091 CODE:
3092 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3093
3094void
3095down (...)
3096 CODE:
3097 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3098
3099void
3100wait (...)
3101 CODE:
3102 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3103
3104void
3105try (SV *self)
3106 PPCODE:
3107{
3108 AV *av = (AV *)SvRV (self);
3109 SV *count_sv = AvARRAY (av)[0];
3110 IV count = SvIVX (count_sv);
3111
3112 if (count > 0)
3113 {
3114 --count;
3115 SvIVX (count_sv) = count;
3116 XSRETURN_YES;
3117 }
3118 else
3119 XSRETURN_NO;
3120}
3121
3122void
3123waiters (SV *self)
3124 PPCODE:
3125{
3126 AV *av = (AV *)SvRV (self);
3127 int wcount = AvFILLp (av) + 1 - 1;
3128
3129 if (GIMME_V == G_SCALAR)
3130 XPUSHs (sv_2mortal (newSViv (wcount)));
3131 else
3132 {
3133 int i;
3134 EXTEND (SP, wcount);
3135 for (i = 1; i <= wcount; ++i)
3136 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3137 }
3138}
3139
3140MODULE = Coro::State PACKAGE = Coro::Signal
3141
3142SV *
3143new (SV *klass)
2337 PPCODE: 3144 CODE:
3145 RETVAL = sv_bless (
3146 coro_waitarray_new (aTHX_ 0),
3147 GvSTASH (CvGV (cv))
3148 );
3149 OUTPUT:
3150 RETVAL
3151
3152void
3153wait (...)
3154 CODE:
3155 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3156
3157void
3158broadcast (SV *self)
3159 CODE:
2338{ 3160{
2339 AV *av = (AV *)SvRV (state); 3161 AV *av = (AV *)SvRV (self);
2340 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3162 coro_signal_wake (aTHX_ av, AvFILLp (av));
2341 int i; 3163}
2342 3164
2343 errno = data->errorno; 3165void
2344 PL_laststype = data->laststype; 3166send (SV *self)
2345 PL_laststatval = data->laststatval; 3167 CODE:
2346 PL_statcache = data->statcache; 3168{
3169 AV *av = (AV *)SvRV (self);
2347 3170
2348 EXTEND (SP, AvFILLp (av)); 3171 if (AvFILLp (av))
2349 for (i = 0; i < AvFILLp (av); ++i) 3172 coro_signal_wake (aTHX_ av, 1);
2350 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3173 else
3174 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2351} 3175}
3176
3177IV
3178awaited (SV *self)
3179 CODE:
3180 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3181 OUTPUT:
3182 RETVAL
2352 3183
2353 3184
2354MODULE = Coro::State PACKAGE = Coro::AnyEvent 3185MODULE = Coro::State PACKAGE = Coro::AnyEvent
2355 3186
2356BOOT: 3187BOOT:
2357 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3188 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2358 3189
2359SV * 3190void
2360_schedule (...) 3191_schedule (...)
2361 PROTOTYPE: @
2362 CODE: 3192 CODE:
2363{ 3193{
2364 static int incede; 3194 static int incede;
2365 3195
2366 api_cede_notself (); 3196 api_cede_notself (aTHX);
2367 3197
2368 ++incede; 3198 ++incede;
2369 while (coro_nready >= incede && api_cede ()) 3199 while (coro_nready >= incede && api_cede (aTHX))
2370 ; 3200 ;
2371 3201
2372 sv_setsv (sv_activity, &PL_sv_undef); 3202 sv_setsv (sv_activity, &PL_sv_undef);
2373 if (coro_nready >= incede) 3203 if (coro_nready >= incede)
2374 { 3204 {
2375 PUSHMARK (SP); 3205 PUSHMARK (SP);
2376 PUTBACK; 3206 PUTBACK;
2377 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3207 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2378 SPAGAIN;
2379 } 3208 }
2380 3209
2381 --incede; 3210 --incede;
2382} 3211}
2383 3212
2384 3213
2385MODULE = Coro::State PACKAGE = PerlIO::cede 3214MODULE = Coro::State PACKAGE = Coro::AIO
2386 3215
2387BOOT: 3216void
2388 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3217_register (char *target, char *proto, SV *req)
3218 CODE:
3219{
3220 CV *req_cv = coro_sv_2cv (req);
3221 /* newXSproto doesn't return the CV on 5.8 */
3222 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3223 sv_setpv ((SV *)slf_cv, proto);
3224 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3225}
3226

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines