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Comparing Coro/Coro/State.xs (file contents):
Revision 1.327 by root, Mon Nov 24 06:07:16 2008 UTC vs.
Revision 1.403 by root, Sun May 22 20:13:33 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#include <stddef.h>
13#include <stdio.h> 19#include <stdio.h>
14#include <errno.h> 20#include <errno.h>
15#include <assert.h> 21#include <assert.h>
16 22
17#ifdef WIN32 23#ifndef SVs_PADSTALE
24# define SVs_PADSTALE 0
25#endif
26
27#if defined(_WIN32)
28# undef HAS_GETTIMEOFDAY
18# undef setjmp 29# undef setjmp
19# undef longjmp 30# undef longjmp
20# undef _exit 31# undef _exit
21# define setjmp _setjmp /* deep magic */ 32# define setjmp _setjmp /* deep magic */
22#else 33#else
… …
51#endif 62#endif
52 63
53/* the maximum number of idle cctx that will be pooled */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif
114
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 67#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD 68# undef CORO_STACKGUARD
117#endif 69#endif
118 70
119#ifndef CORO_STACKGUARD 71#ifndef CORO_STACKGUARD
… …
133#else 85#else
134# define dSTACKLEVEL volatile void *stacklevel 86# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel) 87# define STACKLEVEL ((void *)&stacklevel)
136#endif 88#endif
137 89
138#define IN_DESTRUCT (PL_main_cv == Nullcv) 90#define IN_DESTRUCT PL_dirty
139 91
140#if __GNUC__ >= 3 92#if __GNUC__ >= 3
141# define attribute(x) __attribute__(x) 93# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr),(value)) 94# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline 95# define INLINE static inline
144#else 96#else
145# define attribute(x) 97# define attribute(x)
146# define expect(expr,value) (expr) 98# define expect(expr,value) (expr)
147# define INLINE static 99# define INLINE static
… …
159# if CORO_PTHREAD 111# if CORO_PTHREAD
160static void *coro_thx; 112static void *coro_thx;
161# endif 113# endif
162#endif 114#endif
163 115
116#ifdef __linux
117# include <time.h> /* for timespec */
118# include <syscall.h> /* for SYS_* */
119# ifdef SYS_clock_gettime
120# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
121# define CORO_CLOCK_MONOTONIC 1
122# define CORO_CLOCK_THREAD_CPUTIME_ID 3
123# endif
124#endif
125
164static double (*nvtime)(); /* so why doesn't it take void? */ 126static double (*nvtime)(); /* so why doesn't it take void? */
127static void (*u2time)(pTHX_ UV ret[2]);
165 128
166/* we hijack an hopefully unused CV flag for our purposes */ 129/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000 130#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX); 131static OP *pp_slf (pTHX);
132static void slf_destroy (pTHX_ struct coro *coro);
169 133
170static U32 cctx_gen; 134static U32 cctx_gen;
171static size_t cctx_stacksize = CORO_STACKSIZE; 135static size_t cctx_stacksize = CORO_STACKSIZE;
172static struct CoroAPI coroapi; 136static struct CoroAPI coroapi;
173static AV *main_mainstack; /* used to differentiate between $main and others */ 137static AV *main_mainstack; /* used to differentiate between $main and others */
… …
190static SV *sv_pool_size; 154static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */ 155static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */ 156static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */ 157static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler; 158static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196 159
197/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
198static SV *sv_activity; 161static SV *sv_activity;
199 162
163/* enable processtime/realtime profiling */
164static char enable_times;
165typedef U32 coro_ts[2];
166static coro_ts time_real, time_cpu;
167static char times_valid;
168
200static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
201static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
202 171
203enum { 172enum
173{
204 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
229 int valgrind_id; 199 int valgrind_id;
230#endif 200#endif
231 unsigned char flags; 201 unsigned char flags;
232} coro_cctx; 202} coro_cctx;
233 203
234coro_cctx *cctx_current; /* the currently running cctx */ 204static coro_cctx *cctx_current; /* the currently running cctx */
235 205
236/*****************************************************************************/ 206/*****************************************************************************/
237 207
208static MGVTBL coro_state_vtbl;
209
238enum { 210enum
211{
239 CF_RUNNING = 0x0001, /* coroutine is running */ 212 CF_RUNNING = 0x0001, /* coroutine is running */
240 CF_READY = 0x0002, /* coroutine is ready */ 213 CF_READY = 0x0002, /* coroutine is ready */
241 CF_NEW = 0x0004, /* has never been switched to */ 214 CF_NEW = 0x0004, /* has never been switched to */
242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 215 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
216 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
217 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
243}; 218};
244 219
245/* the structure where most of the perl state is stored, overlaid on the cxstack */ 220/* the structure where most of the perl state is stored, overlaid on the cxstack */
246typedef struct 221typedef struct
247{ 222{
… …
253#define VAR(name,type) type name; 228#define VAR(name,type) type name;
254# include "state.h" 229# include "state.h"
255#undef VAR 230#undef VAR
256} perl_slots; 231} perl_slots;
257 232
233// how many context stack entries do we need for perl_slots
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 234#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 235
260/* this is a structure representing a perl-level coroutine */ 236/* this is a structure representing a perl-level coroutine */
261struct coro { 237struct coro
238{
262 /* the C coroutine allocated to this perl coroutine, if any */ 239 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 240 coro_cctx *cctx;
241
242 /* ready queue */
243 struct coro *next_ready;
264 244
265 /* state data */ 245 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */ 246 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack; 247 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */ 248 perl_slots *slot; /* basically the saved sp */
269 249
270 CV *startcv; /* the CV to execute */ 250 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */ 252 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */ 253 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276 254
277 /* statistics */ 255 /* statistics */
278 int usecount; /* number of transfers to this coro */ 256 int usecount; /* number of transfers to this coro */
279 257
280 /* coro process data */ 258 /* coro process data */
281 int prio; 259 int prio;
282 SV *except; /* exception to be thrown */ 260 SV *except; /* exception to be thrown */
283 SV *rouse_cb; 261 SV *rouse_cb; /* last rouse callback */
262 AV *on_destroy; /* callbacks or coros to notify on destroy */
263 AV *status; /* the exit status list */
284 264
285 /* async_pool */ 265 /* async_pool */
286 SV *saved_deffh; 266 SV *saved_deffh;
287 SV *invoke_cb; 267 SV *invoke_cb;
288 AV *invoke_av; 268 AV *invoke_av;
289 269
270 /* on_enter/on_leave */
271 AV *on_enter;
272 AV *on_leave;
273
274 /* swap_sv */
275 AV *swap_sv;
276
277 /* times */
278 coro_ts t_cpu, t_real;
279
290 /* linked list */ 280 /* linked list */
291 struct coro *next, *prev; 281 struct coro *next, *prev;
292}; 282};
293 283
294typedef struct coro *Coro__State; 284typedef struct coro *Coro__State;
295typedef struct coro *Coro__State_or_hashref; 285typedef struct coro *Coro__State_or_hashref;
296 286
297/* the following variables are effectively part of the perl context */ 287/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */ 288/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */ 289/* the main reason we don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */ 290static struct CoroSLF slf_frame; /* the current slf frame */
301 291
302/** Coro ********************************************************************/ 292/** Coro ********************************************************************/
303 293
304#define PRIO_MAX 3 294#define CORO_PRIO_MAX 3
305#define PRIO_HIGH 1 295#define CORO_PRIO_HIGH 1
306#define PRIO_NORMAL 0 296#define CORO_PRIO_NORMAL 0
307#define PRIO_LOW -1 297#define CORO_PRIO_LOW -1
308#define PRIO_IDLE -3 298#define CORO_PRIO_IDLE -3
309#define PRIO_MIN -4 299#define CORO_PRIO_MIN -4
310 300
311/* for Coro.pm */ 301/* for Coro.pm */
312static SV *coro_current; 302static SV *coro_current;
313static SV *coro_readyhook; 303static SV *coro_readyhook;
314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 304static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
315static CV *cv_coro_run, *cv_coro_terminate; 305static CV *cv_coro_run;
316static struct coro *coro_first; 306static struct coro *coro_first;
317#define coro_nready coroapi.nready 307#define coro_nready coroapi.nready
308
309/** Coro::Select ************************************************************/
310
311static OP *(*coro_old_pp_sselect) (pTHX);
312static SV *coro_select_select;
313
314/* horrible hack, but if it works... */
315static OP *
316coro_pp_sselect (pTHX)
317{
318 dSP;
319 PUSHMARK (SP - 4); /* fake argument list */
320 XPUSHs (coro_select_select);
321 PUTBACK;
322
323 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
324 PL_op->op_flags |= OPf_STACKED;
325 PL_op->op_private = 0;
326 return PL_ppaddr [OP_ENTERSUB](aTHX);
327}
328
329/** time stuff **************************************************************/
330
331#ifdef HAS_GETTIMEOFDAY
332
333static void
334coro_u2time (pTHX_ UV ret[2])
335{
336 struct timeval tv;
337 gettimeofday (&tv, 0);
338
339 ret [0] = tv.tv_sec;
340 ret [1] = tv.tv_usec;
341}
342
343static double
344coro_nvtime ()
345{
346 struct timeval tv;
347 gettimeofday (&tv, 0);
348
349 return tv.tv_sec + tv.tv_usec * 1e-6;
350}
351
352static void
353time_init (pTHX)
354{
355 nvtime = coro_nvtime;
356 u2time = coro_u2time;
357}
358
359#else
360
361static void
362time_init (pTHX)
363{
364 SV **svp;
365
366 require_pv ("Time/HiRes.pm");
367
368 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
369
370 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
371 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
372
373 nvtime = INT2PTR (double (*)(), SvIV (*svp));
374
375 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
376 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
377}
378
379#endif
318 380
319/** lowlevel stuff **********************************************************/ 381/** lowlevel stuff **********************************************************/
320 382
321static SV * 383static SV *
322coro_get_sv (pTHX_ const char *name, int create) 384coro_get_sv (pTHX_ const char *name, int create)
… …
346 get_hv (name, create); 408 get_hv (name, create);
347#endif 409#endif
348 return get_hv (name, create); 410 return get_hv (name, create);
349} 411}
350 412
351/* may croak */ 413INLINE void
414coro_times_update ()
415{
416#ifdef coro_clock_gettime
417 struct timespec ts;
418
419 ts.tv_sec = ts.tv_nsec = 0;
420 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
421 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
422
423 ts.tv_sec = ts.tv_nsec = 0;
424 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
425 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
426#else
427 dTHX;
428 UV tv[2];
429
430 u2time (aTHX_ tv);
431 time_real [0] = tv [0];
432 time_real [1] = tv [1] * 1000;
433#endif
434}
435
436INLINE void
437coro_times_add (struct coro *c)
438{
439 c->t_real [1] += time_real [1];
440 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
441 c->t_real [0] += time_real [0];
442
443 c->t_cpu [1] += time_cpu [1];
444 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
445 c->t_cpu [0] += time_cpu [0];
446}
447
448INLINE void
449coro_times_sub (struct coro *c)
450{
451 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
452 c->t_real [1] -= time_real [1];
453 c->t_real [0] -= time_real [0];
454
455 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
456 c->t_cpu [1] -= time_cpu [1];
457 c->t_cpu [0] -= time_cpu [0];
458}
459
460/*****************************************************************************/
461/* magic glue */
462
463#define CORO_MAGIC_type_cv 26
464#define CORO_MAGIC_type_state PERL_MAGIC_ext
465
466#define CORO_MAGIC_NN(sv, type) \
467 (expect_true (SvMAGIC (sv)->mg_type == type) \
468 ? SvMAGIC (sv) \
469 : mg_find (sv, type))
470
471#define CORO_MAGIC(sv, type) \
472 (expect_true (SvMAGIC (sv)) \
473 ? CORO_MAGIC_NN (sv, type) \
474 : 0)
475
476#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
477#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
478
352INLINE CV * 479INLINE MAGIC *
353coro_sv_2cv (pTHX_ SV *sv) 480SvSTATEhv_p (pTHX_ SV *coro)
354{ 481{
355 HV *st; 482 MAGIC *mg;
356 GV *gvp; 483
357 return sv_2cv (sv, &st, &gvp, 0); 484 if (expect_true (
485 SvTYPE (coro) == SVt_PVHV
486 && (mg = CORO_MAGIC_state (coro))
487 && mg->mg_virtual == &coro_state_vtbl
488 ))
489 return mg;
490
491 return 0;
358} 492}
493
494INLINE struct coro *
495SvSTATE_ (pTHX_ SV *coro)
496{
497 MAGIC *mg;
498
499 if (SvROK (coro))
500 coro = SvRV (coro);
501
502 mg = SvSTATEhv_p (aTHX_ coro);
503 if (!mg)
504 croak ("Coro::State object required");
505
506 return (struct coro *)mg->mg_ptr;
507}
508
509#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
510
511/* faster than SvSTATE, but expects a coroutine hv */
512#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
513#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
514
515/*****************************************************************************/
516/* padlist management and caching */
359 517
360static AV * 518static AV *
361coro_derive_padlist (pTHX_ CV *cv) 519coro_derive_padlist (pTHX_ CV *cv)
362{ 520{
363 AV *padlist = CvPADLIST (cv); 521 AV *padlist = CvPADLIST (cv);
… …
371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 529 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
372#endif 530#endif
373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 531 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
374 --AvFILLp (padlist); 532 --AvFILLp (padlist);
375 533
376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 534 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
377 av_store (newpadlist, 1, (SV *)newpad); 535 av_store (newpadlist, 1, (SV *)newpad);
378 536
379 return newpadlist; 537 return newpadlist;
380} 538}
381 539
382static void 540static void
383free_padlist (pTHX_ AV *padlist) 541free_padlist (pTHX_ AV *padlist)
384{ 542{
385 /* may be during global destruction */ 543 /* may be during global destruction */
386 if (SvREFCNT (padlist)) 544 if (!IN_DESTRUCT)
387 { 545 {
388 I32 i = AvFILLp (padlist); 546 I32 i = AvFILLp (padlist);
389 while (i >= 0) 547
548 while (i > 0) /* special-case index 0 */
390 { 549 {
391 SV **svp = av_fetch (padlist, i--, FALSE); 550 /* we try to be extra-careful here */
392 if (svp) 551 AV *av = (AV *)AvARRAY (padlist)[i--];
393 { 552 I32 j = AvFILLp (av);
394 SV *sv; 553
395 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 554 while (j >= 0)
555 SvREFCNT_dec (AvARRAY (av)[j--]);
556
557 AvFILLp (av) = -1;
396 SvREFCNT_dec (sv); 558 SvREFCNT_dec (av);
397
398 SvREFCNT_dec (*svp);
399 }
400 } 559 }
401 560
561 SvREFCNT_dec (AvARRAY (padlist)[0]);
562
563 AvFILLp (padlist) = -1;
402 SvREFCNT_dec ((SV*)padlist); 564 SvREFCNT_dec ((SV*)padlist);
403 } 565 }
404} 566}
405 567
406static int 568static int
407coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 569coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
408{ 570{
409 AV *padlist; 571 AV *padlist;
410 AV *av = (AV *)mg->mg_obj; 572 AV *av = (AV *)mg->mg_obj;
573
574 /* perl manages to free our internal AV and _then_ call us */
575 if (IN_DESTRUCT)
576 return 0;
411 577
412 /* casting is fun. */ 578 /* casting is fun. */
413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 579 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
414 free_padlist (aTHX_ padlist); 580 free_padlist (aTHX_ padlist);
415 581
416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 582 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
417 583
418 return 0; 584 return 0;
419} 585}
420
421#define CORO_MAGIC_type_cv 26
422#define CORO_MAGIC_type_state PERL_MAGIC_ext
423 586
424static MGVTBL coro_cv_vtbl = { 587static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0, 588 0, 0, 0, 0,
426 coro_cv_free 589 coro_cv_free
427}; 590};
428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
437 : 0)
438
439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
443SvSTATE_ (pTHX_ SV *coro)
444{
445 HV *stash;
446 MAGIC *mg;
447
448 if (SvROK (coro))
449 coro = SvRV (coro);
450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
454 stash = SvSTASH (coro);
455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
456 {
457 /* very slow, but rare, check */
458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
459 croak ("Coro::State object required");
460 }
461
462 mg = CORO_MAGIC_state (coro);
463 return (struct coro *)mg->mg_ptr;
464}
465
466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
471 591
472/* the next two functions merely cache the padlists */ 592/* the next two functions merely cache the padlists */
473static void 593static void
474get_padlist (pTHX_ CV *cv) 594get_padlist (pTHX_ CV *cv)
475{ 595{
… …
503 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 623 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
504 624
505 av = (AV *)mg->mg_obj; 625 av = (AV *)mg->mg_obj;
506 626
507 if (expect_false (AvFILLp (av) >= AvMAX (av))) 627 if (expect_false (AvFILLp (av) >= AvMAX (av)))
508 av_extend (av, AvMAX (av) + 1); 628 av_extend (av, AvFILLp (av) + 1);
509 629
510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 630 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
511} 631}
512 632
513/** load & save, init *******************************************************/ 633/** load & save, init *******************************************************/
634
635/* swap sv heads, at least logically */
636static void
637swap_svs (pTHX_ Coro__State c)
638{
639 int i;
640
641 for (i = 0; i <= AvFILLp (c->swap_sv); )
642 {
643 SV *a = AvARRAY (c->swap_sv)[i++];
644 SV *b = AvARRAY (c->swap_sv)[i++];
645
646 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
647 SV tmp;
648
649 /* swap sv_any */
650 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
651
652 /* swap sv_flags */
653 SvFLAGS (&tmp) = SvFLAGS (a);
654 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
655 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
656
657#if PERL_VERSION_ATLEAST (5,10,0)
658 /* perl 5.10 complicates this _quite_ a bit, but it also is
659 * much faster, so no quarrels here. alternatively, we could
660 * sv_upgrade to avoid this.
661 */
662 {
663 /* swap sv_u */
664 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
665
666 /* if SvANY points to the head, we need to adjust the pointers,
667 * as the pointer for a still points to b, and maybe vice versa.
668 */
669 #define svany_in_head(type) \
670 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
671
672 if (svany_in_head (SvTYPE (a)))
673 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
674
675 if (svany_in_head (SvTYPE (b)))
676 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
677 }
678#endif
679 }
680}
681
682#define SWAP_SVS(coro) \
683 if (expect_false ((coro)->swap_sv)) \
684 swap_svs (aTHX_ (coro))
685
686static void
687on_enterleave_call (pTHX_ SV *cb);
514 688
515static void 689static void
516load_perl (pTHX_ Coro__State c) 690load_perl (pTHX_ Coro__State c)
517{ 691{
518 perl_slots *slot = c->slot; 692 perl_slots *slot = c->slot;
… …
546 PUTBACK; 720 PUTBACK;
547 } 721 }
548 722
549 slf_frame = c->slf_frame; 723 slf_frame = c->slf_frame;
550 CORO_THROW = c->except; 724 CORO_THROW = c->except;
725
726 if (expect_false (enable_times))
727 {
728 if (expect_false (!times_valid))
729 coro_times_update ();
730
731 coro_times_sub (c);
732 }
733
734 if (expect_false (c->on_enter))
735 {
736 int i;
737
738 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
739 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
740 }
741
742 SWAP_SVS (c);
551} 743}
552 744
553static void 745static void
554save_perl (pTHX_ Coro__State c) 746save_perl (pTHX_ Coro__State c)
555{ 747{
748 SWAP_SVS (c);
749
750 if (expect_false (c->on_leave))
751 {
752 int i;
753
754 for (i = AvFILLp (c->on_leave); i >= 0; --i)
755 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
756 }
757
758 times_valid = 0;
759
760 if (expect_false (enable_times))
761 {
762 coro_times_update (); times_valid = 1;
763 coro_times_add (c);
764 }
765
556 c->except = CORO_THROW; 766 c->except = CORO_THROW;
557 c->slf_frame = slf_frame; 767 c->slf_frame = slf_frame;
558 768
559 { 769 {
560 dSP; 770 dSP;
… …
573 { 783 {
574 while (expect_true (cxix >= 0)) 784 while (expect_true (cxix >= 0))
575 { 785 {
576 PERL_CONTEXT *cx = &ccstk[cxix--]; 786 PERL_CONTEXT *cx = &ccstk[cxix--];
577 787
578 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 788 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
579 { 789 {
580 CV *cv = cx->blk_sub.cv; 790 CV *cv = cx->blk_sub.cv;
581 791
582 if (expect_true (CvDEPTH (cv))) 792 if (expect_true (CvDEPTH (cv)))
583 { 793 {
… …
602 812
603 PUTBACK; 813 PUTBACK;
604 } 814 }
605 815
606 /* allocate some space on the context stack for our purposes */ 816 /* allocate some space on the context stack for our purposes */
607 /* we manually unroll here, as usually 2 slots is enough */ 817 if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
608 if (SLOT_COUNT >= 1) CXINC;
609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 { 818 {
612 int i; 819 unsigned int i;
820
613 for (i = 3; i < SLOT_COUNT; ++i) 821 for (i = 0; i < SLOT_COUNT; ++i)
614 CXINC; 822 CXINC;
615 } 823
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 824 cxstack_ix -= SLOT_COUNT; /* undo allocation */
825 }
617 826
618 c->mainstack = PL_mainstack; 827 c->mainstack = PL_mainstack;
619 828
620 { 829 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 830 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
… …
642# define coro_init_stacks(thx) init_stacks () 851# define coro_init_stacks(thx) init_stacks ()
643#else 852#else
644static void 853static void
645coro_init_stacks (pTHX) 854coro_init_stacks (pTHX)
646{ 855{
647 PL_curstackinfo = new_stackinfo(32, 8); 856 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
648 PL_curstackinfo->si_type = PERLSI_MAIN; 857 PL_curstackinfo->si_type = PERLSI_MAIN;
649 PL_curstack = PL_curstackinfo->si_stack; 858 PL_curstack = PL_curstackinfo->si_stack;
650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 859 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
651 860
652 PL_stack_base = AvARRAY(PL_curstack); 861 PL_stack_base = AvARRAY(PL_curstack);
… …
759#endif 968#endif
760 969
761/* 970/*
762 * This overrides the default magic get method of %SIG elements. 971 * This overrides the default magic get method of %SIG elements.
763 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 972 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
764 * and instead of tryign to save and restore the hash elements, we just provide 973 * and instead of trying to save and restore the hash elements (extremely slow),
765 * readback here. 974 * we just provide our own readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */ 975 */
770static int 976static int
771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 977coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{ 978{
773 const char *s = MgPV_nolen_const (mg); 979 const char *s = MgPV_nolen_const (mg);
… …
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1032 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827 1033
828 if (svp) 1034 if (svp)
829 { 1035 {
830 SV *old = *svp; 1036 SV *old = *svp;
831 *svp = newSVsv (sv); 1037 *svp = SvOK (sv) ? newSVsv (sv) : 0;
832 SvREFCNT_dec (old); 1038 SvREFCNT_dec (old);
833 return 0; 1039 return 0;
834 } 1040 }
835 } 1041 }
836 1042
… …
854slf_check_repeat (pTHX_ struct CoroSLF *frame) 1060slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{ 1061{
856 return 1; 1062 return 1;
857} 1063}
858 1064
859static UNOP coro_setup_op; 1065static UNOP init_perl_op;
860 1066
861static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1067static void NOINLINE /* noinline to keep it out of the transfer fast path */
862coro_setup (pTHX_ struct coro *coro) 1068init_perl (pTHX_ struct coro *coro)
863{ 1069{
864 /* 1070 /*
865 * emulate part of the perl startup here. 1071 * emulate part of the perl startup here.
866 */ 1072 */
867 coro_init_stacks (aTHX); 1073 coro_init_stacks (aTHX);
… …
874 PL_comppad_name_fill = 0; 1080 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0; 1081 PL_comppad_name_floor = 0;
876 PL_curpm = 0; 1082 PL_curpm = 0;
877 PL_curpad = 0; 1083 PL_curpad = 0;
878 PL_localizing = 0; 1084 PL_localizing = 0;
879 PL_dirty = 0;
880 PL_restartop = 0; 1085 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0) 1086#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0; 1087 PL_parser = 0;
883#endif 1088#endif
884 PL_hints = 0; 1089 PL_hints = 0;
885 1090
886 /* recreate the die/warn hooks */ 1091 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1092 PL_diehook = SvREFCNT_inc (rv_diehook);
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1093 PL_warnhook = SvREFCNT_inc (rv_warnhook);
889 1094
890 GvSV (PL_defgv) = newSV (0); 1095 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0; 1096 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0); 1097 GvSV (PL_errgv) = newSV (0);
893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1098 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
… …
914 /* this newly created coroutine might be run on an existing cctx which most 1119 /* this newly created coroutine might be run on an existing cctx which most
915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1120 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
916 */ 1121 */
917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1122 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1123 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1124 slf_frame.destroy = 0;
919 1125
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1126 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op; 1127 init_perl_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB; 1128 init_perl_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf; 1129 init_perl_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */ 1130 /* no flags etc. required, as an init function won't be called */
925 1131
926 PL_op = (OP *)&coro_setup_op; 1132 PL_op = (OP *)&init_perl_op;
927 1133
928 /* copy throw, in case it was set before coro_setup */ 1134 /* copy throw, in case it was set before init_perl */
929 CORO_THROW = coro->except; 1135 CORO_THROW = coro->except;
930}
931 1136
1137 SWAP_SVS (coro);
1138
1139 if (expect_false (enable_times))
1140 {
1141 coro_times_update ();
1142 coro_times_sub (coro);
1143 }
1144}
1145
932static void 1146static void
933coro_destruct (pTHX_ struct coro *coro) 1147coro_unwind_stacks (pTHX)
934{ 1148{
935 if (!IN_DESTRUCT) 1149 if (!IN_DESTRUCT)
936 { 1150 {
937 /* restore all saved variables and stuff */ 1151 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0); 1152 LEAVE_SCOPE (0);
… …
946 POPSTACK_TO (PL_mainstack); 1160 POPSTACK_TO (PL_mainstack);
947 1161
948 /* unwind main stack */ 1162 /* unwind main stack */
949 dounwind (-1); 1163 dounwind (-1);
950 } 1164 }
1165}
951 1166
952 SvREFCNT_dec (GvSV (PL_defgv)); 1167static void
953 SvREFCNT_dec (GvAV (PL_defgv)); 1168destroy_perl (pTHX_ struct coro *coro)
954 SvREFCNT_dec (GvSV (PL_errgv)); 1169{
955 SvREFCNT_dec (PL_defoutgv); 1170 SV *svf [9];
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
959 1171
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962 1172 {
1173 SV *old_current = SvRV (coro_current);
1174 struct coro *current = SvSTATE (old_current);
1175
1176 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1177
1178 save_perl (aTHX_ current);
1179
1180 /* this will cause transfer_check to croak on block*/
1181 SvRV_set (coro_current, (SV *)coro->hv);
1182
1183 load_perl (aTHX_ coro);
1184
1185 coro_unwind_stacks (aTHX);
1186
1187 /* restore swapped sv's */
1188 SWAP_SVS (coro);
1189
1190 coro_destruct_stacks (aTHX);
1191
1192 // now save some sv's to be free'd later
1193 svf [0] = GvSV (PL_defgv);
1194 svf [1] = (SV *)GvAV (PL_defgv);
1195 svf [2] = GvSV (PL_errgv);
1196 svf [3] = (SV *)PL_defoutgv;
1197 svf [4] = PL_rs;
1198 svf [5] = GvSV (irsgv);
1199 svf [6] = (SV *)GvHV (PL_hintgv);
1200 svf [7] = PL_diehook;
1201 svf [8] = PL_warnhook;
1202 assert (9 == sizeof (svf) / sizeof (*svf));
1203
1204 SvRV_set (coro_current, old_current);
1205
1206 load_perl (aTHX_ current);
1207 }
1208
1209 {
1210 unsigned int i;
1211
1212 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1213 SvREFCNT_dec (svf [i]);
1214
963 SvREFCNT_dec (coro->saved_deffh); 1215 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb); 1216 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb); 1217 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av); 1218 SvREFCNT_dec (coro->invoke_av);
967 1219 }
968 coro_destruct_stacks (aTHX);
969} 1220}
970 1221
971INLINE void 1222INLINE void
972free_coro_mortal (pTHX) 1223free_coro_mortal (pTHX)
973{ 1224{
974 if (expect_true (coro_mortal)) 1225 if (expect_true (coro_mortal))
975 { 1226 {
976 SvREFCNT_dec (coro_mortal); 1227 SvREFCNT_dec ((SV *)coro_mortal);
977 coro_mortal = 0; 1228 coro_mortal = 0;
978 } 1229 }
979} 1230}
980 1231
981static int 1232static int
… …
1170 /* somebody or something will hit me for both perl_run and PL_restartop */ 1421 /* somebody or something will hit me for both perl_run and PL_restartop */
1171 PL_restartop = PL_op; 1422 PL_restartop = PL_op;
1172 perl_run (PL_curinterp); 1423 perl_run (PL_curinterp);
1173 /* 1424 /*
1174 * Unfortunately, there is no way to get at the return values of the 1425 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these 1426 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1427 * runtime errors here, as this is just a random interpreter, not a thread.
1176 */ 1428 */
1177 1429
1178 /* 1430 /*
1179 * If perl-run returns we assume exit() was being called or the coro 1431 * If perl-run returns we assume exit() was being called or the coro
1180 * fell off the end, which seems to be the only valid (non-bug) 1432 * fell off the end, which seems to be the only valid (non-bug)
1181 * reason for perl_run to return. We try to exit by jumping to the 1433 * reason for perl_run to return. We try to exit by jumping to the
1182 * bootstrap-time "top" top_env, as we cannot restore the "main" 1434 * bootstrap-time "top" top_env, as we cannot restore the "main"
1183 * coroutine as Coro has no such concept 1435 * coroutine as Coro has no such concept.
1436 * This actually isn't valid with the pthread backend, but OSes requiring
1437 * that backend are too broken to do it in a standards-compliant way.
1184 */ 1438 */
1185 PL_top_env = main_top_env; 1439 PL_top_env = main_top_env;
1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1440 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1187 } 1441 }
1188} 1442}
… …
1265cctx_destroy (coro_cctx *cctx) 1519cctx_destroy (coro_cctx *cctx)
1266{ 1520{
1267 if (!cctx) 1521 if (!cctx)
1268 return; 1522 return;
1269 1523
1270 assert (cctx != cctx_current);//D temporary 1524 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1271 1525
1272 --cctx_count; 1526 --cctx_count;
1273 coro_destroy (&cctx->cctx); 1527 coro_destroy (&cctx->cctx);
1274 1528
1275 /* coro_transfer creates new, empty cctx's */ 1529 /* coro_transfer creates new, empty cctx's */
… …
1339 /* TODO: throwing up here is considered harmful */ 1593 /* TODO: throwing up here is considered harmful */
1340 1594
1341 if (expect_true (prev != next)) 1595 if (expect_true (prev != next))
1342 { 1596 {
1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1597 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,"); 1598 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1345 1599
1346 if (expect_false (next->flags & CF_RUNNING)) 1600 if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1348
1349 if (expect_false (next->flags & CF_DESTROYED))
1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1601 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1351 1602
1352#if !PERL_VERSION_ATLEAST (5,10,0) 1603#if !PERL_VERSION_ATLEAST (5,10,0)
1353 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1604 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1605 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1355#endif 1606#endif
… …
1388 if (expect_false (next->flags & CF_NEW)) 1639 if (expect_false (next->flags & CF_NEW))
1389 { 1640 {
1390 /* need to start coroutine */ 1641 /* need to start coroutine */
1391 next->flags &= ~CF_NEW; 1642 next->flags &= ~CF_NEW;
1392 /* setup coroutine call */ 1643 /* setup coroutine call */
1393 coro_setup (aTHX_ next); 1644 init_perl (aTHX_ next);
1394 } 1645 }
1395 else 1646 else
1396 load_perl (aTHX_ next); 1647 load_perl (aTHX_ next);
1397
1398 assert (!prev->cctx);//D temporary
1399 1648
1400 /* possibly untie and reuse the cctx */ 1649 /* possibly untie and reuse the cctx */
1401 if (expect_true ( 1650 if (expect_true (
1402 cctx_current->idle_sp == STACKLEVEL 1651 cctx_current->idle_sp == STACKLEVEL
1403 && !(cctx_current->flags & CC_TRACE) 1652 && !(cctx_current->flags & CC_TRACE)
… …
1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1688#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1689#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1441 1690
1442/** high level stuff ********************************************************/ 1691/** high level stuff ********************************************************/
1443 1692
1693/* this function is actually Coro, not Coro::State, but we call it from here */
1694/* because it is convenient - but it hasn't been declared yet for that reason */
1444static int 1695static void
1696coro_call_on_destroy (pTHX_ struct coro *coro);
1697
1698static void
1445coro_state_destroy (pTHX_ struct coro *coro) 1699coro_state_destroy (pTHX_ struct coro *coro)
1446{ 1700{
1447 if (coro->flags & CF_DESTROYED) 1701 if (coro->flags & CF_ZOMBIE)
1448 return 0; 1702 return;
1449 1703
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro); 1704 slf_destroy (aTHX_ coro);
1452 1705
1453 coro->flags |= CF_DESTROYED; 1706 coro->flags |= CF_ZOMBIE;
1454 1707
1455 if (coro->flags & CF_READY) 1708 if (coro->flags & CF_READY)
1456 { 1709 {
1457 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1710 /* reduce nready, as destroying a ready coro effectively unreadies it */
1458 /* alternative: look through all ready queues and remove the coro */ 1711 /* alternative: look through all ready queues and remove the coro */
1459 --coro_nready; 1712 --coro_nready;
1460 } 1713 }
1461 else 1714 else
1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1715 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1463 1716
1464 if (coro->mainstack && coro->mainstack != main_mainstack) 1717 if (coro->next) coro->next->prev = coro->prev;
1465 { 1718 if (coro->prev) coro->prev->next = coro->next;
1466 struct coro temp; 1719 if (coro == coro_first) coro_first = coro->next;
1467 1720
1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1721 if (coro->mainstack
1469 1722 && coro->mainstack != main_mainstack
1470 save_perl (aTHX_ &temp); 1723 && coro->slot
1724 && !PL_dirty)
1471 load_perl (aTHX_ coro); 1725 destroy_perl (aTHX_ coro);
1472
1473 coro_destruct (aTHX_ coro);
1474
1475 load_perl (aTHX_ &temp);
1476
1477 coro->slot = 0;
1478 }
1479 1726
1480 cctx_destroy (coro->cctx); 1727 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv); 1728 SvREFCNT_dec (coro->startcv);
1482 SvREFCNT_dec (coro->args); 1729 SvREFCNT_dec (coro->args);
1730 SvREFCNT_dec (coro->swap_sv);
1483 SvREFCNT_dec (CORO_THROW); 1731 SvREFCNT_dec (CORO_THROW);
1484 1732
1485 if (coro->next) coro->next->prev = coro->prev; 1733 coro_call_on_destroy (aTHX_ coro);
1486 if (coro->prev) coro->prev->next = coro->next;
1487 if (coro == coro_first) coro_first = coro->next;
1488 1734
1489 return 1; 1735 /* more destruction mayhem in coro_state_free */
1490} 1736}
1491 1737
1492static int 1738static int
1493coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1739coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1494{ 1740{
1495 struct coro *coro = (struct coro *)mg->mg_ptr; 1741 struct coro *coro = (struct coro *)mg->mg_ptr;
1496 mg->mg_ptr = 0; 1742 mg->mg_ptr = 0;
1497 1743
1498 coro->hv = 0;
1499
1500 if (--coro->refcnt < 0)
1501 {
1502 coro_state_destroy (aTHX_ coro); 1744 coro_state_destroy (aTHX_ coro);
1745 SvREFCNT_dec (coro->on_destroy);
1746 SvREFCNT_dec (coro->status);
1747
1503 Safefree (coro); 1748 Safefree (coro);
1504 }
1505 1749
1506 return 0; 1750 return 0;
1507} 1751}
1508 1752
1509static int 1753static int
1510coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1754coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1511{ 1755{
1512 struct coro *coro = (struct coro *)mg->mg_ptr; 1756 /* called when perl clones the current process the slow way (windows process emulation) */
1513 1757 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1514 ++coro->refcnt; 1758 mg->mg_ptr = 0;
1759 mg->mg_virtual = 0;
1515 1760
1516 return 0; 1761 return 0;
1517} 1762}
1518 1763
1519static MGVTBL coro_state_vtbl = { 1764static MGVTBL coro_state_vtbl = {
… …
1542 1787
1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1788 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1544 TRANSFER (ta, 1); 1789 TRANSFER (ta, 1);
1545} 1790}
1546 1791
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1570/** Coro ********************************************************************/ 1792/** Coro ********************************************************************/
1571 1793
1572INLINE void 1794INLINE void
1573coro_enq (pTHX_ struct coro *coro) 1795coro_enq (pTHX_ struct coro *coro)
1574{ 1796{
1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1797 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1576}
1577 1798
1578INLINE SV * 1799 SvREFCNT_inc_NN (coro->hv);
1800
1801 coro->next_ready = 0;
1802 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1803 ready [1] = coro;
1804}
1805
1806INLINE struct coro *
1579coro_deq (pTHX) 1807coro_deq (pTHX)
1580{ 1808{
1581 int prio; 1809 int prio;
1582 1810
1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1811 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1584 if (AvFILLp (coro_ready [prio]) >= 0) 1812 {
1585 return av_shift (coro_ready [prio]); 1813 struct coro **ready = coro_ready [prio];
1814
1815 if (ready [0])
1816 {
1817 struct coro *coro = ready [0];
1818 ready [0] = coro->next_ready;
1819 return coro;
1820 }
1821 }
1586 1822
1587 return 0; 1823 return 0;
1824}
1825
1826static void
1827invoke_sv_ready_hook_helper (void)
1828{
1829 dTHX;
1830 dSP;
1831
1832 ENTER;
1833 SAVETMPS;
1834
1835 PUSHMARK (SP);
1836 PUTBACK;
1837 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1838
1839 FREETMPS;
1840 LEAVE;
1588} 1841}
1589 1842
1590static int 1843static int
1591api_ready (pTHX_ SV *coro_sv) 1844api_ready (pTHX_ SV *coro_sv)
1592{ 1845{
1593 struct coro *coro;
1594 SV *sv_hook;
1595 void (*xs_hook)(void);
1596
1597 coro = SvSTATE (coro_sv); 1846 struct coro *coro = SvSTATE (coro_sv);
1598 1847
1599 if (coro->flags & CF_READY) 1848 if (coro->flags & CF_READY)
1600 return 0; 1849 return 0;
1601 1850
1602 coro->flags |= CF_READY; 1851 coro->flags |= CF_READY;
1603 1852
1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1606
1607 coro_enq (aTHX_ coro); 1853 coro_enq (aTHX_ coro);
1608 ++coro_nready;
1609 1854
1610 if (sv_hook) 1855 if (!coro_nready++)
1611 { 1856 if (coroapi.readyhook)
1612 dSP; 1857 coroapi.readyhook ();
1613
1614 ENTER;
1615 SAVETMPS;
1616
1617 PUSHMARK (SP);
1618 PUTBACK;
1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1620
1621 FREETMPS;
1622 LEAVE;
1623 }
1624
1625 if (xs_hook)
1626 xs_hook ();
1627 1858
1628 return 1; 1859 return 1;
1629} 1860}
1630 1861
1631static int 1862static int
… …
1654static void 1885static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1886prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{ 1887{
1657 for (;;) 1888 for (;;)
1658 { 1889 {
1659 SV *next_sv = coro_deq (aTHX); 1890 struct coro *next = coro_deq (aTHX);
1660 1891
1661 if (expect_true (next_sv)) 1892 if (expect_true (next))
1662 { 1893 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */ 1894 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED)) 1895 if (expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ 1896 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1668 else 1897 else
1669 { 1898 {
1670 next->flags &= ~CF_READY; 1899 next->flags &= ~CF_READY;
1671 --coro_nready; 1900 --coro_nready;
1672 1901
… …
1678 { 1907 {
1679 /* nothing to schedule: call the idle handler */ 1908 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle) 1909 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle))) 1910 && SvOBJECT (SvRV (sv_idle)))
1682 { 1911 {
1912 if (SvRV (sv_idle) == SvRV (coro_current))
1913 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1914
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 1915 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle)); 1916 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready; 1917 --coro_nready;
1686 } 1918 }
1687 else 1919 else
1688 { 1920 {
1921 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1689 dSP; 1922 dSP;
1690 1923
1691 ENTER; 1924 ENTER;
1692 SAVETMPS; 1925 SAVETMPS;
1693 1926
… …
1800 coro->slot->runops = RUNOPS_DEFAULT; 2033 coro->slot->runops = RUNOPS_DEFAULT;
1801 } 2034 }
1802} 2035}
1803 2036
1804static void 2037static void
2038coro_push_av (pTHX_ AV *av, I32 gimme_v)
2039{
2040 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2041 {
2042 dSP;
2043
2044 if (gimme_v == G_SCALAR)
2045 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2046 else
2047 {
2048 int i;
2049 EXTEND (SP, AvFILLp (av) + 1);
2050
2051 for (i = 0; i <= AvFILLp (av); ++i)
2052 PUSHs (AvARRAY (av)[i]);
2053 }
2054
2055 PUTBACK;
2056 }
2057}
2058
2059static void
2060coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2061{
2062 if (!coro->on_destroy)
2063 coro->on_destroy = newAV ();
2064
2065 av_push (coro->on_destroy, cb);
2066}
2067
2068static void
2069slf_destroy_join (pTHX_ struct CoroSLF *frame)
2070{
2071 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2072}
2073
2074static int
2075slf_check_join (pTHX_ struct CoroSLF *frame)
2076{
2077 struct coro *coro = (struct coro *)frame->data;
2078
2079 if (!coro->status)
2080 return 1;
2081
2082 frame->destroy = 0;
2083
2084 coro_push_av (aTHX_ coro->status, GIMME_V);
2085
2086 SvREFCNT_dec ((SV *)coro->hv);
2087
2088 return 0;
2089}
2090
2091static void
2092slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2095
2096 if (items > 1)
2097 croak ("join called with too many arguments");
2098
2099 if (coro->status)
2100 frame->prepare = prepare_nop;
2101 else
2102 {
2103 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2104 frame->prepare = prepare_schedule;
2105 }
2106
2107 frame->check = slf_check_join;
2108 frame->destroy = slf_destroy_join;
2109 frame->data = (void *)coro;
2110 SvREFCNT_inc (coro->hv);
2111}
2112
2113static void
1805coro_call_on_destroy (pTHX_ struct coro *coro) 2114coro_call_on_destroy (pTHX_ struct coro *coro)
1806{ 2115{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2116 AV *od = coro->on_destroy;
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809 2117
1810 if (on_destroyp) 2118 if (!od)
1811 { 2119 return;
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813 2120
1814 while (AvFILLp (on_destroy) >= 0) 2121 while (AvFILLp (od) >= 0)
2122 {
2123 SV *cb = sv_2mortal (av_pop (od));
2124
2125 /* coro hv's (and only hv's at the moment) are supported as well */
2126 if (SvSTATEhv_p (aTHX_ cb))
2127 api_ready (aTHX_ cb);
2128 else
1815 { 2129 {
1816 dSP; /* don't disturb outer sp */ 2130 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP); 2131 PUSHMARK (SP);
1820 2132
1821 if (statusp) 2133 if (coro->status)
1822 { 2134 {
1823 int i; 2135 PUTBACK;
1824 AV *status = (AV *)SvRV (*statusp); 2136 coro_push_av (aTHX_ coro->status, G_ARRAY);
1825 EXTEND (SP, AvFILLp (status) + 1); 2137 SPAGAIN;
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 } 2138 }
1830 2139
1831 PUTBACK; 2140 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2141 call_sv (cb, G_VOID | G_DISCARD);
1833 } 2142 }
1834 } 2143 }
1835} 2144}
1836 2145
1837static void 2146static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2147coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1839{ 2148{
2149 AV *av;
2150
2151 if (coro->status)
2152 {
2153 av = coro->status;
2154 av_clear (av);
2155 }
2156 else
2157 av = coro->status = newAV ();
2158
2159 /* items are actually not so common, so optimise for this case */
2160 if (items)
2161 {
1840 int i; 2162 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843 2163
1844 av_extend (av, items - 1); 2164 av_extend (av, items - 1);
2165
1845 for (i = 0; i < items; ++i) 2166 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i])); 2167 av_push (av, SvREFCNT_inc_NN (arg [i]));
2168 }
2169}
1847 2170
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2171static void
1849 2172slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2173{
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2174 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager); 2175 api_ready (aTHX_ sv_manager);
1852 2176
1853 frame->prepare = prepare_schedule; 2177 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat; 2178 frame->check = slf_check_repeat;
2179
2180 /* as a minor optimisation, we could unwind all stacks here */
2181 /* but that puts extra pressure on pp_slf, and is not worth much */
2182 /*coro_unwind_stacks (aTHX);*/
2183}
2184
2185static void
2186slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2187{
2188 HV *coro_hv = (HV *)SvRV (coro_current);
2189
2190 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2191 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2192}
2193
2194static void
2195slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 HV *coro_hv;
2198 struct coro *coro;
2199
2200 if (items <= 0)
2201 croak ("Coro::cancel called without coro object,");
2202
2203 coro = SvSTATE (arg [0]);
2204 coro_hv = coro->hv;
2205
2206 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2207
2208 if (expect_false (coro->flags & CF_NOCANCEL))
2209 {
2210 /* coro currently busy cancelling something, so just notify it */
2211 coro->slf_frame.data = (void *)coro;
2212
2213 frame->prepare = prepare_nop;
2214 frame->check = slf_check_nop;
2215 }
2216 else if (coro_hv == (HV *)SvRV (coro_current))
2217 {
2218 /* cancelling the current coro is allowed, and equals terminate */
2219 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2220 }
2221 else
2222 {
2223 struct coro *self = SvSTATE_current;
2224
2225 /* otherwise we cancel directly, purely for speed reasons
2226 * unfortunately, this requires some magic trickery, as
2227 * somebody else could cancel us, so we have to fight the cancellation.
2228 * this is ugly, and hopefully fully worth the extra speed.
2229 * besides, I can't get the slow-but-safe version working...
2230 */
2231 slf_frame.data = 0;
2232 self->flags |= CF_NOCANCEL;
2233 coro_state_destroy (aTHX_ coro);
2234 self->flags &= ~CF_NOCANCEL;
2235
2236 if (slf_frame.data)
2237 {
2238 /* while we were busy we have been cancelled, so terminate */
2239 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2240 }
2241 else
2242 {
2243 frame->prepare = prepare_nop;
2244 frame->check = slf_check_nop;
2245 }
2246 }
2247}
2248
2249static int
2250slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2251{
2252 frame->prepare = 0;
2253 coro_unwind_stacks (aTHX);
2254
2255 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2256
2257 return 1;
2258}
2259
2260static int
2261safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2262{
2263 if (coro->cctx)
2264 croak ("coro inside C callback, unable to cancel at this time, caught");
2265
2266 if (coro->flags & CF_NEW)
2267 {
2268 coro_set_status (aTHX_ coro, arg, items);
2269 coro_state_destroy (aTHX_ coro);
2270 }
2271 else
2272 {
2273 if (!coro->slf_frame.prepare)
2274 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2275
2276 slf_destroy (aTHX_ coro);
2277
2278 coro_set_status (aTHX_ coro, arg, items);
2279 coro->slf_frame.prepare = prepare_nop;
2280 coro->slf_frame.check = slf_check_safe_cancel;
2281
2282 api_ready (aTHX_ (SV *)coro->hv);
2283 }
2284
2285 return 1;
1855} 2286}
1856 2287
1857/*****************************************************************************/ 2288/*****************************************************************************/
1858/* async pool handler */ 2289/* async pool handler */
1859 2290
… …
1899 coro->saved_deffh = 0; 2330 coro->saved_deffh = 0;
1900 2331
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2332 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2333 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 { 2334 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2335 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1905 coro->invoke_av = newAV (); 2336 return;
1906
1907 frame->prepare = prepare_nop;
1908 } 2337 }
1909 else 2338 else
1910 { 2339 {
1911 av_clear (GvAV (PL_defgv)); 2340 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2341 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
… …
1937 2366
1938static void 2367static void
1939coro_rouse_callback (pTHX_ CV *cv) 2368coro_rouse_callback (pTHX_ CV *cv)
1940{ 2369{
1941 dXSARGS; 2370 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG; 2371 SV *data = (SV *)S_GENSUB_ARG;
1943 2372
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2373 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 { 2374 {
1946 /* first call, set args */ 2375 /* first call, set args */
2376 SV *coro = SvRV (data);
1947 AV *av = newAV (); 2377 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949 2378
1950 SvRV_set (data, (SV *)av); 2379 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953 2380
1954 /* better take a full copy of the arguments */ 2381 /* better take a full copy of the arguments */
1955 while (items--) 2382 while (items--)
1956 av_store (av, items, newSVsv (ST (items))); 2383 av_store (av, items, newSVsv (ST (items)));
2384
2385 api_ready (aTHX_ coro);
2386 SvREFCNT_dec (coro);
1957 } 2387 }
1958 2388
1959 XSRETURN_EMPTY; 2389 XSRETURN_EMPTY;
1960} 2390}
1961 2391
… …
1978 2408
1979 EXTEND (SP, AvFILLp (av) + 1); 2409 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i) 2410 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2411 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982 2412
1983 /* we have stolen the elements, so ste length to zero and free */ 2413 /* we have stolen the elements, so set length to zero and free */
1984 AvFILLp (av) = -1; 2414 AvFILLp (av) = -1;
1985 av_undef (av); 2415 av_undef (av);
1986 2416
1987 PUTBACK; 2417 PUTBACK;
1988 } 2418 }
… …
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV 2442 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2443 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,"); 2444 croak ("Coro::rouse_wait called with illegal callback argument,");
2015 2445
2016 { 2446 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2447 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG; 2448 SV *data = (SV *)S_GENSUB_ARG;
2019 2449
2020 frame->data = (void *)data; 2450 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2451 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait; 2452 frame->check = slf_check_rouse_wait;
2023 } 2453 }
… …
2027coro_new_rouse_cb (pTHX) 2457coro_new_rouse_cb (pTHX)
2028{ 2458{
2029 HV *hv = (HV *)SvRV (coro_current); 2459 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv); 2460 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv); 2461 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2462 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2033 2463
2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2464 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */ 2465 SvREFCNT_dec (data); /* magicext increases the refcount */
2036 2466
2037 SvREFCNT_dec (coro->rouse_cb); 2467 SvREFCNT_dec (coro->rouse_cb);
… …
2134static void 2564static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2565slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{ 2566{
2137 frame->prepare = prepare_cede_notself; 2567 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop; 2568 frame->check = slf_check_nop;
2569}
2570
2571/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2572static void
2573slf_destroy (pTHX_ struct coro *coro)
2574{
2575 /* this callback is reserved for slf functions needing to do cleanup */
2576 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2577 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2578
2579 /*
2580 * The on_destroy above most likely is from an SLF call.
2581 * Since by definition the SLF call will not finish when we destroy
2582 * the coro, we will have to force-finish it here, otherwise
2583 * cleanup functions cannot call SLF functions.
2584 */
2585 coro->slf_frame.prepare = 0;
2139} 2586}
2140 2587
2141/* 2588/*
2142 * these not obviously related functions are all rolled into one 2589 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same 2590 * function to increase chances that they all will call transfer with the same
… …
2212 croak (0); 2659 croak (0);
2213 } 2660 }
2214 2661
2215 /* return value handling - mostly like entersub */ 2662 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */ 2663 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR) 2664 if (GIMME_V == G_SCALAR
2665 && expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2218 { 2666 {
2219 dSP; 2667 dSP;
2220 SV **bot = PL_stack_base + checkmark; 2668 SV **bot = PL_stack_base + checkmark;
2221 2669
2222 if (sp == bot) /* too few, push undef */ 2670 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef; 2671 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */ 2672 else /* too many, take last one */
2225 bot [1] = *sp; 2673 bot [1] = *sp;
2226 2674
2227 SP = bot + 1; 2675 SP = bot + 1;
2228 2676
2229 PUTBACK; 2677 PUTBACK;
… …
2262 if (PL_op->op_flags & OPf_STACKED) 2710 if (PL_op->op_flags & OPf_STACKED)
2263 { 2711 {
2264 if (items > slf_arga) 2712 if (items > slf_arga)
2265 { 2713 {
2266 slf_arga = items; 2714 slf_arga = items;
2267 free (slf_argv); 2715 Safefree (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *)); 2716 New (0, slf_argv, slf_arga, SV *);
2269 } 2717 }
2270 2718
2271 slf_argc = items; 2719 slf_argc = items;
2272 2720
2273 for (i = 0; i < items; ++i) 2721 for (i = 0; i < items; ++i)
… …
2278 2726
2279 PL_op->op_ppaddr = pp_slf; 2727 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ 2728 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281 2729
2282 PL_op = (OP *)&slf_restore; 2730 PL_op = (OP *)&slf_restore;
2731}
2732
2733/*****************************************************************************/
2734/* dynamic wind */
2735
2736static void
2737on_enterleave_call (pTHX_ SV *cb)
2738{
2739 dSP;
2740
2741 PUSHSTACK;
2742
2743 PUSHMARK (SP);
2744 PUTBACK;
2745 call_sv (cb, G_VOID | G_DISCARD);
2746 SPAGAIN;
2747
2748 POPSTACK;
2749}
2750
2751static SV *
2752coro_avp_pop_and_free (pTHX_ AV **avp)
2753{
2754 AV *av = *avp;
2755 SV *res = av_pop (av);
2756
2757 if (AvFILLp (av) < 0)
2758 {
2759 *avp = 0;
2760 SvREFCNT_dec (av);
2761 }
2762
2763 return res;
2764}
2765
2766static void
2767coro_pop_on_enter (pTHX_ void *coro)
2768{
2769 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2770 SvREFCNT_dec (cb);
2771}
2772
2773static void
2774coro_pop_on_leave (pTHX_ void *coro)
2775{
2776 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2777 on_enterleave_call (aTHX_ sv_2mortal (cb));
2283} 2778}
2284 2779
2285/*****************************************************************************/ 2780/*****************************************************************************/
2286/* PerlIO::cede */ 2781/* PerlIO::cede */
2287 2782
… …
2361/* Coro::Semaphore & Coro::Signal */ 2856/* Coro::Semaphore & Coro::Signal */
2362 2857
2363static SV * 2858static SV *
2364coro_waitarray_new (pTHX_ int count) 2859coro_waitarray_new (pTHX_ int count)
2365{ 2860{
2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2861 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV (); 2862 AV *av = newAV ();
2368 SV **ary; 2863 SV **ary;
2369 2864
2370 /* unfortunately, building manually saves memory */ 2865 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *); 2866 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary; 2867 AvALLOC (av) = ary;
2868#if PERL_VERSION_ATLEAST (5,10,0)
2373 /*AvARRAY (av) = ary;*/ 2869 AvARRAY (av) = ary;
2870#else
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2871 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2872 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2873 SvPVX ((SV *)av) = (char *)ary;
2874#endif
2375 AvMAX (av) = 1; 2875 AvMAX (av) = 1;
2376 AvFILLp (av) = 0; 2876 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count); 2877 ary [0] = newSViv (count);
2378 2878
2379 return newRV_noinc ((SV *)av); 2879 return newRV_noinc ((SV *)av);
… …
2417 SvREFCNT_dec (cb); 2917 SvREFCNT_dec (cb);
2418 } 2918 }
2419} 2919}
2420 2920
2421static void 2921static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2922coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2423{ 2923{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2924 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2925 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2426} 2926}
2427 2927
2428static int 2928static int
2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2929slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2430{ 2930{
2431 AV *av = (AV *)frame->data; 2931 AV *av = (AV *)frame->data;
2432 SV *count_sv = AvARRAY (av)[0]; 2932 SV *count_sv = AvARRAY (av)[0];
2933 SV *coro_hv = SvRV (coro_current);
2433 2934
2434 /* if we are about to throw, don't actually acquire the lock, just throw */ 2935 /* if we are about to throw, don't actually acquire the lock, just throw */
2435 if (CORO_THROW) 2936 if (CORO_THROW)
2436 return 0; 2937 return 0;
2437 else if (SvIVX (count_sv) > 0) 2938 else if (SvIVX (count_sv) > 0)
2438 { 2939 {
2439 SvSTATE_current->on_destroy = 0; 2940 frame->destroy = 0;
2440 2941
2441 if (acquire) 2942 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2943 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else 2944 else
2444 coro_semaphore_adjust (aTHX_ av, 0); 2945 coro_semaphore_adjust (aTHX_ av, 0);
… …
2449 { 2950 {
2450 int i; 2951 int i;
2451 /* if we were woken up but can't down, we look through the whole */ 2952 /* if we were woken up but can't down, we look through the whole */
2452 /* waiters list and only add us if we aren't in there already */ 2953 /* waiters list and only add us if we aren't in there already */
2453 /* this avoids some degenerate memory usage cases */ 2954 /* this avoids some degenerate memory usage cases */
2454 2955 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current)) 2956 if (AvARRAY (av)[i] == coro_hv)
2457 return 1; 2957 return 1;
2458 2958
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2959 av_push (av, SvREFCNT_inc (coro_hv));
2460 return 1; 2960 return 1;
2461 } 2961 }
2462} 2962}
2463 2963
2464static int 2964static int
… …
2487 { 2987 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2988 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489 2989
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2990 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule; 2991 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */ 2992 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2993 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2994 frame->destroy = coro_semaphore_destroy;
2496 } 2995 }
2497} 2996}
2498 2997
2499static void 2998static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2999slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2508{ 3007{
2509 if (items >= 2) 3008 if (items >= 2)
2510 { 3009 {
2511 /* callback form */ 3010 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]); 3011 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3012 SV *cb_cv = s_get_cv_croak (arg [1]);
2514 3013
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3014 av_push (av, SvREFCNT_inc_NN (cb_cv));
2516 3015
2517 if (SvIVX (AvARRAY (av)[0]) > 0) 3016 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0); 3017 coro_semaphore_adjust (aTHX_ av, 0);
2519 3018
2520 frame->prepare = prepare_nop; 3019 frame->prepare = prepare_nop;
… …
2544 AvARRAY (av)[0] = AvARRAY (av)[1]; 3043 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb; 3044 AvARRAY (av)[1] = cb;
2546 3045
2547 cb = av_shift (av); 3046 cb = av_shift (av);
2548 3047
3048 if (SvTYPE (cb) == SVt_PVCV)
3049 {
3050 dSP;
3051 PUSHMARK (SP);
3052 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3053 PUTBACK;
3054 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3055 }
3056 else
3057 {
2549 api_ready (aTHX_ cb); 3058 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */ 3059 sv_setiv (cb, 0); /* signal waiter */
3060 }
3061
2551 SvREFCNT_dec (cb); 3062 SvREFCNT_dec (cb);
2552 3063
2553 --count; 3064 --count;
2554 } 3065 }
2555} 3066}
… …
2564static void 3075static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3076slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{ 3077{
2567 AV *av = (AV *)SvRV (arg [0]); 3078 AV *av = (AV *)SvRV (arg [0]);
2568 3079
3080 if (items >= 2)
3081 {
3082 SV *cb_cv = s_get_cv_croak (arg [1]);
3083 av_push (av, SvREFCNT_inc_NN (cb_cv));
3084
2569 if (SvIVX (AvARRAY (av)[0])) 3085 if (SvIVX (AvARRAY (av)[0]))
3086 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3087
3088 frame->prepare = prepare_nop;
3089 frame->check = slf_check_nop;
3090 }
3091 else if (SvIVX (AvARRAY (av)[0]))
2570 { 3092 {
2571 SvIVX (AvARRAY (av)[0]) = 0; 3093 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop; 3094 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop; 3095 frame->check = slf_check_nop;
2574 } 3096 }
2575 else 3097 else
2576 { 3098 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3099 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2578 3100
2579 av_push (av, waiter); 3101 av_push (av, waiter);
2580 3102
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3103 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule; 3104 frame->prepare = prepare_schedule;
… …
2600 3122
2601static void 3123static void
2602coro_aio_callback (pTHX_ CV *cv) 3124coro_aio_callback (pTHX_ CV *cv)
2603{ 3125{
2604 dXSARGS; 3126 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG; 3127 AV *state = (AV *)S_GENSUB_ARG;
2606 SV *coro = av_pop (state); 3128 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state)); 3129 SV *data_sv = newSV (sizeof (struct io_state));
2608 3130
2609 av_extend (state, items - 1); 3131 av_extend (state, items - 1);
2610 3132
… …
2724 3246
2725 for (i = 0; i < items; ++i) 3247 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]); 3248 PUSHs (arg [i]);
2727 3249
2728 /* now push the callback closure */ 3250 /* now push the callback closure */
2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3251 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2730 3252
2731 /* now call the AIO function - we assume our request is uncancelable */ 3253 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK; 3254 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD); 3255 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 } 3256 }
2735 3257
2736 /* now that the requets is going, we loop toll we have a result */ 3258 /* now that the request is going, we loop till we have a result */
2737 frame->data = (void *)state; 3259 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule; 3260 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req; 3261 frame->check = slf_check_aio_req;
2740} 3262}
2741 3263
… …
2752/*****************************************************************************/ 3274/*****************************************************************************/
2753 3275
2754#if CORO_CLONE 3276#if CORO_CLONE
2755# include "clone.c" 3277# include "clone.c"
2756#endif 3278#endif
3279
3280/*****************************************************************************/
3281
3282static SV *
3283coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3284{
3285 SV *coro_sv;
3286 struct coro *coro;
3287 MAGIC *mg;
3288 HV *hv;
3289 SV *cb;
3290 int i;
3291
3292 if (argc > 0)
3293 {
3294 cb = s_get_cv_croak (argv [0]);
3295
3296 if (!is_coro)
3297 {
3298 if (CvISXSUB (cb))
3299 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3300
3301 if (!CvROOT (cb))
3302 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3303 }
3304 }
3305
3306 Newz (0, coro, 1, struct coro);
3307 coro->args = newAV ();
3308 coro->flags = CF_NEW;
3309
3310 if (coro_first) coro_first->prev = coro;
3311 coro->next = coro_first;
3312 coro_first = coro;
3313
3314 coro->hv = hv = newHV ();
3315 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3316 mg->mg_flags |= MGf_DUP;
3317 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3318
3319 if (argc > 0)
3320 {
3321 av_extend (coro->args, argc + is_coro - 1);
3322
3323 if (is_coro)
3324 {
3325 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3326 cb = (SV *)cv_coro_run;
3327 }
3328
3329 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3330
3331 for (i = 1; i < argc; i++)
3332 av_push (coro->args, newSVsv (argv [i]));
3333 }
3334
3335 return coro_sv;
3336}
2757 3337
2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3338MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2759 3339
2760PROTOTYPES: DISABLE 3340PROTOTYPES: DISABLE
2761 3341
… …
2814 coroapi.prepare_nop = prepare_nop; 3394 coroapi.prepare_nop = prepare_nop;
2815 coroapi.prepare_schedule = prepare_schedule; 3395 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede; 3396 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself; 3397 coroapi.prepare_cede_notself = prepare_cede_notself;
2818 3398
2819 { 3399 time_init (aTHX);
2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2821 3400
2822 if (!svp) croak ("Time::HiRes is required");
2823 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2824
2825 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2826 }
2827
2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3401 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2829} 3402}
2830 3403
2831SV * 3404SV *
2832new (char *klass, ...) 3405new (SV *klass, ...)
2833 ALIAS: 3406 ALIAS:
2834 Coro::new = 1 3407 Coro::new = 1
2835 CODE: 3408 CODE:
2836{ 3409 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2837 struct coro *coro; 3410 OUTPUT:
2838 MAGIC *mg;
2839 HV *hv;
2840 CV *cb;
2841 int i;
2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
2856
2857 Newz (0, coro, 1, struct coro);
2858 coro->args = newAV ();
2859 coro->flags = CF_NEW;
2860
2861 if (coro_first) coro_first->prev = coro;
2862 coro->next = coro_first;
2863 coro_first = coro;
2864
2865 coro->hv = hv = newHV ();
2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2867 mg->mg_flags |= MGf_DUP;
2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2869
2870 if (items > 1)
2871 {
2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
2882 for (i = 2; i < items; i++)
2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
2885}
2886 OUTPUT:
2887 RETVAL 3411 RETVAL
2888 3412
2889void 3413void
2890transfer (...) 3414transfer (...)
2891 PROTOTYPE: $$ 3415 PROTOTYPE: $$
2892 CODE: 3416 CODE:
2893 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3417 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2894 3418
2895bool
2896_destroy (SV *coro_sv)
2897 CODE:
2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2899 OUTPUT:
2900 RETVAL
2901
2902void 3419void
2903_exit (int code) 3420_exit (int code)
2904 PROTOTYPE: $ 3421 PROTOTYPE: $
2905 CODE: 3422 CODE:
2906 _exit (code); 3423 _exit (code);
… …
2908SV * 3425SV *
2909clone (Coro::State coro) 3426clone (Coro::State coro)
2910 CODE: 3427 CODE:
2911{ 3428{
2912#if CORO_CLONE 3429#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro); 3430 struct coro *ncoro = coro_clone (aTHX_ coro);
2914 MAGIC *mg; 3431 MAGIC *mg;
2915 /* TODO: too much duplication */ 3432 /* TODO: too much duplication */
2916 ncoro->hv = newHV (); 3433 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); 3434 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP; 3435 mg->mg_flags |= MGf_DUP;
… …
2980 eval = 1 3497 eval = 1
2981 CODE: 3498 CODE:
2982{ 3499{
2983 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3500 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2984 { 3501 {
2985 struct coro temp; 3502 struct coro *current = SvSTATE_current;
3503 struct CoroSLF slf_save;
2986 3504
2987 if (!(coro->flags & CF_RUNNING)) 3505 if (current != coro)
2988 { 3506 {
2989 PUTBACK; 3507 PUTBACK;
2990 save_perl (aTHX_ &temp); 3508 save_perl (aTHX_ current);
2991 load_perl (aTHX_ coro); 3509 load_perl (aTHX_ coro);
3510 /* the coro is most likely in an active SLF call.
3511 * while not strictly required (the code we execute is
3512 * not allowed to call any SLF functions), it's cleaner
3513 * to reinitialise the slf_frame and restore it later.
3514 * This might one day allow us to actually do SLF calls
3515 * from code executed here.
3516 */
3517 slf_save = slf_frame;
3518 slf_frame.prepare = 0;
3519 SPAGAIN;
2992 } 3520 }
2993 3521
2994 {
2995 dSP;
2996 ENTER;
2997 SAVETMPS;
2998 PUTBACK;
2999 PUSHSTACK; 3522 PUSHSTACK;
3523
3000 PUSHMARK (SP); 3524 PUSHMARK (SP);
3525 PUTBACK;
3001 3526
3002 if (ix) 3527 if (ix)
3003 eval_sv (coderef, 0); 3528 eval_sv (coderef, 0);
3004 else 3529 else
3005 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3530 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3006 3531
3007 POPSTACK; 3532 POPSTACK;
3008 SPAGAIN; 3533 SPAGAIN;
3009 FREETMPS;
3010 LEAVE;
3011 PUTBACK;
3012 }
3013 3534
3014 if (!(coro->flags & CF_RUNNING)) 3535 if (current != coro)
3015 { 3536 {
3537 PUTBACK;
3538 slf_frame = slf_save;
3016 save_perl (aTHX_ coro); 3539 save_perl (aTHX_ coro);
3017 load_perl (aTHX_ &temp); 3540 load_perl (aTHX_ current);
3018 SPAGAIN; 3541 SPAGAIN;
3019 } 3542 }
3020 } 3543 }
3021} 3544}
3022 3545
… …
3025 PROTOTYPE: $ 3548 PROTOTYPE: $
3026 ALIAS: 3549 ALIAS:
3027 is_ready = CF_READY 3550 is_ready = CF_READY
3028 is_running = CF_RUNNING 3551 is_running = CF_RUNNING
3029 is_new = CF_NEW 3552 is_new = CF_NEW
3030 is_destroyed = CF_DESTROYED 3553 is_destroyed = CF_ZOMBIE
3554 is_zombie = CF_ZOMBIE
3555 is_suspended = CF_SUSPENDED
3031 CODE: 3556 CODE:
3032 RETVAL = boolSV (coro->flags & ix); 3557 RETVAL = boolSV (coro->flags & ix);
3033 OUTPUT: 3558 OUTPUT:
3034 RETVAL 3559 RETVAL
3035 3560
3036void 3561void
3037throw (Coro::State self, SV *throw = &PL_sv_undef) 3562throw (Coro::State self, SV *exception = &PL_sv_undef)
3038 PROTOTYPE: $;$ 3563 PROTOTYPE: $;$
3039 CODE: 3564 CODE:
3040{ 3565{
3041 struct coro *current = SvSTATE_current; 3566 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except; 3567 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3043 SvREFCNT_dec (*throwp); 3568 SvREFCNT_dec (*exceptionp);
3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3569 SvGETMAGIC (exception);
3570 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3045} 3571}
3046 3572
3047void 3573void
3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$ 3575 PROTOTYPE: $;$
… …
3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3626 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3101 3627
3102 SV *tmp = *src; *src = *dst; *dst = tmp; 3628 SV *tmp = *src; *src = *dst; *dst = tmp;
3103 } 3629 }
3104 3630
3631void
3632cancel (Coro::State self)
3633 CODE:
3634 coro_state_destroy (aTHX_ self);
3635
3636SV *
3637enable_times (int enabled = enable_times)
3638 CODE:
3639{
3640 RETVAL = boolSV (enable_times);
3641
3642 if (enabled != enable_times)
3643 {
3644 enable_times = enabled;
3645
3646 coro_times_update ();
3647 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3648 }
3649}
3650 OUTPUT:
3651 RETVAL
3652
3653void
3654times (Coro::State self)
3655 PPCODE:
3656{
3657 struct coro *current = SvSTATE (coro_current);
3658
3659 if (expect_false (current == self))
3660 {
3661 coro_times_update ();
3662 coro_times_add (SvSTATE (coro_current));
3663 }
3664
3665 EXTEND (SP, 2);
3666 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3667 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3668
3669 if (expect_false (current == self))
3670 coro_times_sub (SvSTATE (coro_current));
3671}
3672
3673void
3674swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3675 CODE:
3676{
3677 struct coro *current = SvSTATE_current;
3678
3679 if (current == coro)
3680 SWAP_SVS (current);
3681
3682 if (!coro->swap_sv)
3683 coro->swap_sv = newAV ();
3684
3685 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3686 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3687
3688 if (current == coro)
3689 SWAP_SVS (current);
3690}
3691
3105 3692
3106MODULE = Coro::State PACKAGE = Coro 3693MODULE = Coro::State PACKAGE = Coro
3107 3694
3108BOOT: 3695BOOT:
3109{ 3696{
3110 int i;
3111
3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3697 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3698 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 3699 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3700 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3701 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3702 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3703 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 3704 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121 3705
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3706 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3707 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3708 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 3709 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3126 3710
3127 coro_stash = gv_stashpv ("Coro", TRUE); 3711 coro_stash = gv_stashpv ("Coro", TRUE);
3128 3712
3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3713 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3714 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3131 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3715 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3132 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3716 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3133 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3717 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3134 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3718 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3135
3136 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3137 coro_ready[i] = newAV ();
3138 3719
3139 { 3720 {
3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3721 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3141 3722
3142 coroapi.schedule = api_schedule; 3723 coroapi.schedule = api_schedule;
… …
3152 sv_setiv (sv, (IV)&coroapi); 3733 sv_setiv (sv, (IV)&coroapi);
3153 SvREADONLY_on (sv); 3734 SvREADONLY_on (sv);
3154 } 3735 }
3155} 3736}
3156 3737
3738SV *
3739async (...)
3740 PROTOTYPE: &@
3741 CODE:
3742 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3743 api_ready (aTHX_ RETVAL);
3744 OUTPUT:
3745 RETVAL
3746
3747void
3748_destroy (Coro::State coro)
3749 CODE:
3750 /* used by the manager thread */
3751 coro_state_destroy (aTHX_ coro);
3752
3753void
3754on_destroy (Coro::State coro, SV *cb)
3755 CODE:
3756 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3757
3758void
3759join (...)
3760 CODE:
3761 CORO_EXECUTE_SLF_XS (slf_init_join);
3762
3157void 3763void
3158terminate (...) 3764terminate (...)
3159 CODE: 3765 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate); 3766 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161 3767
3162void 3768void
3769cancel (...)
3770 CODE:
3771 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3772
3773int
3774safe_cancel (Coro::State self, ...)
3775 C_ARGS: aTHX_ self, &ST (1), items - 1
3776
3777void
3163schedule (...) 3778schedule (...)
3164 CODE: 3779 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3780 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166 3781
3167void 3782void
… …
3181 3796
3182void 3797void
3183cede_notself (...) 3798cede_notself (...)
3184 CODE: 3799 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3800 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
3192 3801
3193void 3802void
3194_set_current (SV *current) 3803_set_current (SV *current)
3195 PROTOTYPE: $ 3804 PROTOTYPE: $
3196 CODE: 3805 CODE:
… …
3200void 3809void
3201_set_readyhook (SV *hook) 3810_set_readyhook (SV *hook)
3202 PROTOTYPE: $ 3811 PROTOTYPE: $
3203 CODE: 3812 CODE:
3204 SvREFCNT_dec (coro_readyhook); 3813 SvREFCNT_dec (coro_readyhook);
3814 SvGETMAGIC (hook);
3815 if (SvOK (hook))
3816 {
3205 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3817 coro_readyhook = newSVsv (hook);
3818 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3819 }
3820 else
3821 {
3822 coro_readyhook = 0;
3823 CORO_READYHOOK = 0;
3824 }
3206 3825
3207int 3826int
3208prio (Coro::State coro, int newprio = 0) 3827prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$ 3828 PROTOTYPE: $;$
3210 ALIAS: 3829 ALIAS:
… …
3216 if (items > 1) 3835 if (items > 1)
3217 { 3836 {
3218 if (ix) 3837 if (ix)
3219 newprio = coro->prio - newprio; 3838 newprio = coro->prio - newprio;
3220 3839
3221 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3840 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3222 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3841 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3223 3842
3224 coro->prio = newprio; 3843 coro->prio = newprio;
3225 } 3844 }
3226} 3845}
3227 OUTPUT: 3846 OUTPUT:
… …
3242 RETVAL = coro_nready; 3861 RETVAL = coro_nready;
3243 OUTPUT: 3862 OUTPUT:
3244 RETVAL 3863 RETVAL
3245 3864
3246void 3865void
3866suspend (Coro::State self)
3867 PROTOTYPE: $
3868 CODE:
3869 self->flags |= CF_SUSPENDED;
3870
3871void
3872resume (Coro::State self)
3873 PROTOTYPE: $
3874 CODE:
3875 self->flags &= ~CF_SUSPENDED;
3876
3877void
3247_pool_handler (...) 3878_pool_handler (...)
3248 CODE: 3879 CODE:
3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 3880 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3250 3881
3251void 3882void
… …
3262 for (i = 1; i < items; ++i) 3893 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i))); 3894 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264 3895
3265 if ((SV *)hv == &PL_sv_undef) 3896 if ((SV *)hv == &PL_sv_undef)
3266 { 3897 {
3267 PUSHMARK (SP); 3898 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 3899 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3900 SvREFCNT_dec (sv);
3276 } 3901 }
3277 3902
3278 { 3903 {
3279 struct coro *coro = SvSTATE_hv (hv); 3904 struct coro *coro = SvSTATE_hv (hv);
3280 3905
… …
3304rouse_wait (...) 3929rouse_wait (...)
3305 PROTOTYPE: ;$ 3930 PROTOTYPE: ;$
3306 PPCODE: 3931 PPCODE:
3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 3932 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3308 3933
3934void
3935on_enter (SV *block)
3936 ALIAS:
3937 on_leave = 1
3938 PROTOTYPE: &
3939 CODE:
3940{
3941 struct coro *coro = SvSTATE_current;
3942 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3943
3944 block = s_get_cv_croak (block);
3945
3946 if (!*avp)
3947 *avp = newAV ();
3948
3949 av_push (*avp, SvREFCNT_inc (block));
3950
3951 if (!ix)
3952 on_enterleave_call (aTHX_ block);
3953
3954 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3955 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3956 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3957}
3958
3309 3959
3310MODULE = Coro::State PACKAGE = PerlIO::cede 3960MODULE = Coro::State PACKAGE = PerlIO::cede
3311 3961
3312BOOT: 3962BOOT:
3313 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3963 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3316MODULE = Coro::State PACKAGE = Coro::Semaphore 3966MODULE = Coro::State PACKAGE = Coro::Semaphore
3317 3967
3318SV * 3968SV *
3319new (SV *klass, SV *count = 0) 3969new (SV *klass, SV *count = 0)
3320 CODE: 3970 CODE:
3971{
3972 int semcnt = 1;
3973
3974 if (count)
3975 {
3976 SvGETMAGIC (count);
3977
3978 if (SvOK (count))
3979 semcnt = SvIV (count);
3980 }
3981
3321 RETVAL = sv_bless ( 3982 RETVAL = sv_bless (
3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 3983 coro_waitarray_new (aTHX_ semcnt),
3323 GvSTASH (CvGV (cv)) 3984 GvSTASH (CvGV (cv))
3324 ); 3985 );
3986}
3325 OUTPUT: 3987 OUTPUT:
3326 RETVAL 3988 RETVAL
3327 3989
3328# helper for Coro::Channel 3990# helper for Coro::Channel and others
3329SV * 3991SV *
3330_alloc (int count) 3992_alloc (int count)
3331 CODE: 3993 CODE:
3332 RETVAL = coro_waitarray_new (aTHX_ count); 3994 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT: 3995 OUTPUT:
… …
3391 for (i = 1; i <= wcount; ++i) 4053 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4054 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 } 4055 }
3394} 4056}
3395 4057
4058MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4059
4060void
4061_may_delete (SV *sem, int count, int extra_refs)
4062 PPCODE:
4063{
4064 AV *av = (AV *)SvRV (sem);
4065
4066 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4067 && AvFILLp (av) == 0 /* no waiters, just count */
4068 && SvIV (AvARRAY (av)[0]) == count)
4069 XSRETURN_YES;
4070
4071 XSRETURN_NO;
4072}
4073
3396MODULE = Coro::State PACKAGE = Coro::Signal 4074MODULE = Coro::State PACKAGE = Coro::Signal
3397 4075
3398SV * 4076SV *
3399new (SV *klass) 4077new (SV *klass)
3400 CODE: 4078 CODE:
… …
3471 4149
3472void 4150void
3473_register (char *target, char *proto, SV *req) 4151_register (char *target, char *proto, SV *req)
3474 CODE: 4152 CODE:
3475{ 4153{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req); 4154 SV *req_cv = s_get_cv_croak (req);
3477 /* newXSproto doesn't return the CV on 5.8 */ 4155 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4156 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto); 4157 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4158 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481} 4159}
3482 4160
4161MODULE = Coro::State PACKAGE = Coro::Select
4162
4163void
4164patch_pp_sselect ()
4165 CODE:
4166 if (!coro_old_pp_sselect)
4167 {
4168 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4169 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4170 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4171 }
4172
4173void
4174unpatch_pp_sselect ()
4175 CODE:
4176 if (coro_old_pp_sselect)
4177 {
4178 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4179 coro_old_pp_sselect = 0;
4180 }
4181

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