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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.359 by root, Mon Jun 29 05:07:19 2009 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 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
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
121#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
123 137
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
128# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
129# define INLINE static inline 143# define INLINE static inline
130#else 144#else
131# define attribute(x) 145# define attribute(x)
132# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
133# define INLINE static 147# define INLINE static
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
138 152
139#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
140 154
141#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
142 157
143#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 159# if CORO_PTHREAD
149static void *coro_thx; 160static void *coro_thx;
150# endif 161# endif
162#endif
151 163
152#else 164#ifdef __linux
153 165# include <time.h> /* for timespec */
154# define LOCK (void)0 166# include <syscall.h> /* for SYS_* */
155# define UNLOCK (void)0 167# ifdef SYS_clock_gettime
156 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
169# define CORO_CLOCK_MONOTONIC 1
170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
157#endif 171# endif
158 172#endif
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 173
174static double (*nvtime)(); /* so why doesn't it take void? */ 174static double (*nvtime)(); /* so why doesn't it take void? */
175
176/* we hijack an hopefully unused CV flag for our purposes */
177#define CVf_SLF 0x4000
178static OP *pp_slf (pTHX);
175 179
176static U32 cctx_gen; 180static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 181static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 182static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 183static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 184static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 185static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 186static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 187
185struct transfer_args 188static AV *av_destroy; /* destruction queue */
186{ 189static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 190static SV *sv_idle; /* $Coro::idle */
188};
189 191
190static GV *irsgv; /* $/ */ 192static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 193static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 194static SV *rv_diehook;
193static SV *rv_warnhook; 195static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 196static HV *hv_sig; /* %SIG */
195 197
196/* async_pool helper stuff */ 198/* async_pool helper stuff */
197static SV *sv_pool_rss; 199static SV *sv_pool_rss;
198static SV *sv_pool_size; 200static SV *sv_pool_size;
201static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 202static AV *av_async_pool; /* idle pool */
203static SV *sv_Coro; /* class string */
204static CV *cv_pool_handler;
205static CV *cv_coro_state_new;
200 206
201/* Coro::AnyEvent */ 207/* Coro::AnyEvent */
202static SV *sv_activity; 208static SV *sv_activity;
209
210/* enable processtime/realtime profiling */
211static char profile_times;
212typedef U32 coro_ts[2];
203 213
204static struct coro_cctx *cctx_first; 214static struct coro_cctx *cctx_first;
205static int cctx_count, cctx_idle; 215static int cctx_count, cctx_idle;
206 216
207enum { 217enum {
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 222 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 223 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 224};
215 225
216/* this is a structure representing a c-level coroutine */ 226/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 227typedef struct coro_cctx
228{
218 struct coro_cctx *next; 229 struct coro_cctx *next;
219 230
220 /* the stack */ 231 /* the stack */
221 void *sptr; 232 void *sptr;
222 size_t ssize; 233 size_t ssize;
… …
232 int valgrind_id; 243 int valgrind_id;
233#endif 244#endif
234 unsigned char flags; 245 unsigned char flags;
235} coro_cctx; 246} coro_cctx;
236 247
248coro_cctx *cctx_current; /* the currently running cctx */
249
250/*****************************************************************************/
251
237enum { 252enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 253 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 254 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 255 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 256 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
257 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
242}; 258};
243 259
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 260/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 261typedef struct
262{
246 SV *defsv; 263 SV *defsv;
247 AV *defav; 264 AV *defav;
248 SV *errsv; 265 SV *errsv;
249 SV *irsgv; 266 SV *irsgv;
267 HV *hinthv;
250#define VAR(name,type) type name; 268#define VAR(name,type) type name;
251# include "state.h" 269# include "state.h"
252#undef VAR 270#undef VAR
253} perl_slots; 271} perl_slots;
254 272
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 273#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 274
257/* this is a structure representing a perl-level coroutine */ 275/* this is a structure representing a perl-level coroutine */
258struct coro { 276struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 277 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 278 coro_cctx *cctx;
261 279
262 /* process data */ 280 /* ready queue */
281 struct coro *next_ready;
282
283 /* state data */
284 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 285 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 286 perl_slots *slot; /* basically the saved sp */
265 287
288 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 289 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 290 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 291 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 292 HV *hv; /* the perl hash associated with this coro, if any */
293 void (*on_destroy)(pTHX_ struct coro *coro);
270 294
271 /* statistics */ 295 /* statistics */
272 int usecount; /* number of transfers to this coro */ 296 int usecount; /* number of transfers to this coro */
273 297
274 /* coro process data */ 298 /* coro process data */
275 int prio; 299 int prio;
276 SV *throw; /* exception to be thrown */ 300 SV *except; /* exception to be thrown */
301 SV *rouse_cb;
277 302
278 /* async_pool */ 303 /* async_pool */
279 SV *saved_deffh; 304 SV *saved_deffh;
305 SV *invoke_cb;
306 AV *invoke_av;
307
308 /* on_enter/on_leave */
309 AV *on_enter;
310 AV *on_leave;
280 311
281 /* linked list */ 312 /* linked list */
282 struct coro *next, *prev; 313 struct coro *next, *prev;
283}; 314};
284 315
285typedef struct coro *Coro__State; 316typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 317typedef struct coro *Coro__State_or_hashref;
287 318
319/* the following variables are effectively part of the perl context */
320/* and get copied between struct coro and these variables */
321/* the mainr easonw e don't support windows process emulation */
322static struct CoroSLF slf_frame; /* the current slf frame */
323
288/** Coro ********************************************************************/ 324/** Coro ********************************************************************/
289 325
290#define PRIO_MAX 3 326#define CORO_PRIO_MAX 3
291#define PRIO_HIGH 1 327#define CORO_PRIO_HIGH 1
292#define PRIO_NORMAL 0 328#define CORO_PRIO_NORMAL 0
293#define PRIO_LOW -1 329#define CORO_PRIO_LOW -1
294#define PRIO_IDLE -3 330#define CORO_PRIO_IDLE -3
295#define PRIO_MIN -4 331#define CORO_PRIO_MIN -4
296 332
297/* for Coro.pm */ 333/* for Coro.pm */
298static SV *coro_current; 334static SV *coro_current;
299static SV *coro_readyhook; 335static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 336static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 337static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 338static struct coro *coro_first;
339#define coro_nready coroapi.nready
303 340
304/** lowlevel stuff **********************************************************/ 341/** lowlevel stuff **********************************************************/
305 342
306static SV * 343static SV *
307coro_get_sv (pTHX_ const char *name, int create) 344coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 368 get_hv (name, create);
332#endif 369#endif
333 return get_hv (name, create); 370 return get_hv (name, create);
334} 371}
335 372
373/* may croak */
374INLINE CV *
375coro_sv_2cv (pTHX_ SV *sv)
376{
377 HV *st;
378 GV *gvp;
379 CV *cv = sv_2cv (sv, &st, &gvp, 0);
380
381 if (!cv)
382 croak ("code reference expected");
383
384 return cv;
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
336static AV * 439static AV *
337coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
338{ 441{
339 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
341 444
342 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 451#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist); 453 --AvFILLp (padlist);
351 454
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
353 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
354 457
355 return newpadlist; 458 return newpadlist;
356} 459}
357 460
358static void 461static void
359free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
360{ 463{
361 /* may be during global destruction */ 464 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
363 { 466 {
364 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
365 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
366 { 470 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
368 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
369 { 473 I32 j = AvFILLp (av);
370 SV *sv; 474
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
372 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
373
374 SvREFCNT_dec (*svp);
375 }
376 } 480 }
377 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
378 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
379 } 486 }
380} 487}
381 488
382static int 489static int
383coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
384{ 491{
385 AV *padlist; 492 AV *padlist;
386 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return;
387 498
388 /* casting is fun. */ 499 /* casting is fun. */
389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
390 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
391 502
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 504
394 return 0; 505 return 0;
395} 506}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 507
400static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 509 0, 0, 0, 0,
402 coro_cv_free 510 coro_cv_free
403}; 511};
404
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440 512
441/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
442static void 514static void
443get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
444{ 516{
… …
450 else 522 else
451 { 523 {
452#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
459#else 531#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 533#endif
462 } 534 }
463} 535}
464 536
465static void 537static void
… …
472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
473 545
474 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
475 547
476 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
478 550
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 552}
481 553
482/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
483 558
484static void 559static void
485load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
486{ 561{
487 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
488 c->slot = 0; 563 c->slot = 0;
489 564
490 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
491 566
492 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
496 572
497 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 574 # include "state.h"
499 #undef VAR 575 #undef VAR
500 576
… …
511 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
512 } 588 }
513 589
514 PUTBACK; 590 PUTBACK;
515 } 591 }
592
593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (c->on_enter))
597 {
598 int i;
599
600 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
601 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
602 }
516} 603}
517 604
518static void 605static void
519save_perl (pTHX_ Coro__State c) 606save_perl (pTHX_ Coro__State c)
520{ 607{
608 if (expect_false (c->on_leave))
609 {
610 int i;
611
612 for (i = AvFILLp (c->on_leave); i >= 0; --i)
613 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
614 }
615
616 c->except = CORO_THROW;
617 c->slf_frame = slf_frame;
618
521 { 619 {
522 dSP; 620 dSP;
523 I32 cxix = cxstack_ix; 621 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 622 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 623 PERL_SI *top_si = PL_curstackinfo;
… …
535 { 633 {
536 while (expect_true (cxix >= 0)) 634 while (expect_true (cxix >= 0))
537 { 635 {
538 PERL_CONTEXT *cx = &ccstk[cxix--]; 636 PERL_CONTEXT *cx = &ccstk[cxix--];
539 637
540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 638 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
541 { 639 {
542 CV *cv = cx->blk_sub.cv; 640 CV *cv = cx->blk_sub.cv;
543 641
544 if (expect_true (CvDEPTH (cv))) 642 if (expect_true (CvDEPTH (cv)))
545 { 643 {
… …
580 c->mainstack = PL_mainstack; 678 c->mainstack = PL_mainstack;
581 679
582 { 680 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 681 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 682
585 slot->defav = GvAV (PL_defgv); 683 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 684 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 685 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 686 slot->irsgv = GvSV (irsgv);
687 slot->hinthv = GvHV (PL_hintgv);
589 688
590 #define VAR(name,type) slot->name = PL_ ## name; 689 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 690 # include "state.h"
592 #undef VAR 691 #undef VAR
593 } 692 }
594} 693}
595 694
596/* 695/*
597 * allocate various perl stacks. This is an exact copy 696 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 697 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 698 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 699 * not usually need a lot of stackspace.
601 */ 700 */
602#if CORO_PREFER_PERL_FUNCTIONS 701#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 702# define coro_init_stacks(thx) init_stacks ()
604#else 703#else
605static void 704static void
606coro_init_stacks (pTHX) 705coro_init_stacks (pTHX)
607{ 706{
608 PL_curstackinfo = new_stackinfo(32, 8); 707 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 770#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 771 Safefree (PL_retstack);
673#endif 772#endif
674} 773}
675 774
775#define CORO_RSS \
776 rss += sizeof (SYM (curstackinfo)); \
777 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
778 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
779 rss += SYM (tmps_max) * sizeof (SV *); \
780 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
781 rss += SYM (scopestack_max) * sizeof (I32); \
782 rss += SYM (savestack_max) * sizeof (ANY);
783
676static size_t 784static size_t
677coro_rss (pTHX_ struct coro *coro) 785coro_rss (pTHX_ struct coro *coro)
678{ 786{
679 size_t rss = sizeof (*coro); 787 size_t rss = sizeof (*coro);
680 788
681 if (coro->mainstack) 789 if (coro->mainstack)
682 { 790 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 791 if (coro->flags & CF_RUNNING)
687 { 792 {
688 slot = &tmp_slot; 793 #define SYM(sym) PL_ ## sym
689 794 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 795 #undef SYM
693 } 796 }
694 else 797 else
695 slot = coro->slot;
696
697 if (slot)
698 { 798 {
699 rss += sizeof (slot->curstackinfo); 799 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 800 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 801 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 802 }
711 } 803 }
712 804
713 return rss; 805 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 806}
742 807
743/** coroutine stack handling ************************************************/ 808/** coroutine stack handling ************************************************/
744 809
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 810static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
754#endif 819#endif
755 820
756/* 821/*
757 * This overrides the default magic get method of %SIG elements. 822 * This overrides the default magic get method of %SIG elements.
758 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 823 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
759 * and instead of tryign to save and restore the hash elements, we just provide 824 * and instead of trying to save and restore the hash elements, we just provide
760 * readback here. 825 * readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */ 826 */
765static int 827static int
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 828coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
767{ 829{
768 const char *s = MgPV_nolen_const (mg); 830 const char *s = MgPV_nolen_const (mg);
… …
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 883 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822 884
823 if (svp) 885 if (svp)
824 { 886 {
825 SV *old = *svp; 887 SV *old = *svp;
826 *svp = newSVsv (sv); 888 *svp = SvOK (sv) ? newSVsv (sv) : 0;
827 SvREFCNT_dec (old); 889 SvREFCNT_dec (old);
828 return 0; 890 return 0;
829 } 891 }
830 } 892 }
831 893
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 894 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 895}
834 896
835static void 897static void
898prepare_nop (pTHX_ struct coro_transfer_args *ta)
899{
900 /* kind of mega-hacky, but works */
901 ta->next = ta->prev = (struct coro *)ta;
902}
903
904static int
905slf_check_nop (pTHX_ struct CoroSLF *frame)
906{
907 return 0;
908}
909
910static int
911slf_check_repeat (pTHX_ struct CoroSLF *frame)
912{
913 return 1;
914}
915
916static UNOP coro_setup_op;
917
918static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 919coro_setup (pTHX_ struct coro *coro)
837{ 920{
838 /* 921 /*
839 * emulate part of the perl startup here. 922 * emulate part of the perl startup here.
840 */ 923 */
… …
842 925
843 PL_runops = RUNOPS_DEFAULT; 926 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 927 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 928 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 929 PL_comppad = 0;
930 PL_comppad_name = 0;
931 PL_comppad_name_fill = 0;
932 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 933 PL_curpm = 0;
848 PL_curpad = 0; 934 PL_curpad = 0;
849 PL_localizing = 0; 935 PL_localizing = 0;
850 PL_dirty = 0; 936 PL_dirty = 0;
851 PL_restartop = 0; 937 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 938#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 939 PL_parser = 0;
854#endif 940#endif
941 PL_hints = 0;
855 942
856 /* recreate the die/warn hooks */ 943 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 944 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 945 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
859 946
860 GvSV (PL_defgv) = newSV (0); 947 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 948 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 949 GvSV (PL_errgv) = newSV (0);
863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 950 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
951 GvHV (PL_hintgv) = 0;
864 PL_rs = newSVsv (GvSV (irsgv)); 952 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 953 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 954
867 { 955 {
868 dSP; 956 dSP;
869 UNOP myop; 957 UNOP myop;
870 958
871 Zero (&myop, 1, UNOP); 959 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 960 myop.op_next = Nullop;
961 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 962 myop.op_flags = OPf_WANT_VOID;
874 963
875 PUSHMARK (SP); 964 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 965 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 966 PUTBACK;
878 PL_op = (OP *)&myop; 967 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 968 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 969 }
882 970
883 /* this newly created coroutine might be run on an existing cctx which most 971 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 972 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 973 */
887 SSL_HEAD; 974 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
888} 975 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
889 976
977 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
978 coro_setup_op.op_next = PL_op;
979 coro_setup_op.op_type = OP_ENTERSUB;
980 coro_setup_op.op_ppaddr = pp_slf;
981 /* no flags etc. required, as an init function won't be called */
982
983 PL_op = (OP *)&coro_setup_op;
984
985 /* copy throw, in case it was set before coro_setup */
986 CORO_THROW = coro->except;
987}
988
890static void 989static void
891coro_destruct (pTHX_ struct coro *coro) 990coro_unwind_stacks (pTHX)
892{ 991{
893 if (!IN_DESTRUCT) 992 if (!IN_DESTRUCT)
894 { 993 {
895 /* restore all saved variables and stuff */ 994 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 995 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1003 POPSTACK_TO (PL_mainstack);
905 1004
906 /* unwind main stack */ 1005 /* unwind main stack */
907 dounwind (-1); 1006 dounwind (-1);
908 } 1007 }
1008}
909 1009
910 SvREFCNT_dec (GvSV (PL_defgv)); 1010static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1011coro_destruct_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1012{
913 SvREFCNT_dec (PL_defoutgv); 1013 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1014
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1015 {
1016 struct coro *current = SvSTATE_current;
1017
1018 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1019
1020 save_perl (aTHX_ current);
1021 load_perl (aTHX_ coro);
1022
1023 coro_unwind_stacks (aTHX);
1024 coro_destruct_stacks (aTHX);
1025
1026 // now save some sv's to be free'd later
1027 svf [0] = GvSV (PL_defgv);
1028 svf [1] = (SV *)GvAV (PL_defgv);
1029 svf [2] = GvSV (PL_errgv);
1030 svf [3] = (SV *)PL_defoutgv;
1031 svf [4] = PL_rs;
1032 svf [5] = GvSV (irsgv);
1033 svf [6] = (SV *)GvHV (PL_hintgv);
1034 svf [7] = PL_diehook;
1035 svf [8] = PL_warnhook;
1036 assert (9 == sizeof (svf) / sizeof (*svf));
1037
1038 load_perl (aTHX_ current);
1039 }
1040
1041 {
1042 int i;
1043
1044 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1045 SvREFCNT_dec (svf [i]);
1046
920 SvREFCNT_dec (coro->saved_deffh); 1047 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 1048 SvREFCNT_dec (coro->rouse_cb);
922 1049 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1050 SvREFCNT_dec (coro->invoke_av);
1051 }
924} 1052}
925 1053
926INLINE void 1054INLINE void
927free_coro_mortal (pTHX) 1055free_coro_mortal (pTHX)
928{ 1056{
… …
936static int 1064static int
937runops_trace (pTHX) 1065runops_trace (pTHX)
938{ 1066{
939 COP *oldcop = 0; 1067 COP *oldcop = 0;
940 int oldcxix = -2; 1068 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1069
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1070 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1071 {
946 PERL_ASYNC_CHECK (); 1072 PERL_ASYNC_CHECK ();
947 1073
948 if (cctx->flags & CC_TRACE_ALL) 1074 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1075 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1076 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1077 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1078 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1079 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1080 AV *av = newAV (); /* return values */
955 SV **cb; 1081 SV **cb;
… …
992 1118
993 if (PL_curcop != &PL_compiling) 1119 if (PL_curcop != &PL_compiling)
994 { 1120 {
995 SV **cb; 1121 SV **cb;
996 1122
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1123 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1124 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1125 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1126
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1127 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1128 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1129 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1130 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1131 SV *fullname = sv_2mortal (newSV (0));
1007 1132
1008 if (isGV (gv)) 1133 if (isGV (gv))
… …
1013 SAVETMPS; 1138 SAVETMPS;
1014 EXTEND (SP, 3); 1139 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1140 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1141 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1142 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1143 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1144 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1145 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1146 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1147 SPAGAIN;
1023 FREETMPS; 1148 FREETMPS;
… …
1026 } 1151 }
1027 1152
1028 oldcxix = cxstack_ix; 1153 oldcxix = cxstack_ix;
1029 } 1154 }
1030 1155
1031 if (cctx->flags & CC_TRACE_LINE) 1156 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1157 {
1033 dSP; 1158 dSP;
1034 1159
1035 PL_runops = RUNOPS_DEFAULT; 1160 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1161 ENTER;
… …
1055 1180
1056 TAINT_NOT; 1181 TAINT_NOT;
1057 return 0; 1182 return 0;
1058} 1183}
1059 1184
1185static struct CoroSLF cctx_ssl_frame;
1186
1060static void 1187static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1188slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1189{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1190 ta->prev = 0;
1065} 1191}
1066 1192
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1193static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1194slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1195{
1070/* also initialises PL_top_env */ 1196 *frame = cctx_ssl_frame;
1197
1198 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1199}
1200
1201/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1071static void NOINLINE 1202static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1203cctx_prepare (pTHX)
1073{ 1204{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1205 PL_top_env = &PL_start_env;
1078 1206
1079 if (cctx->flags & CC_TRACE) 1207 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1208 PL_runops = runops_trace;
1081 1209
1082 Zero (&myop, 1, UNOP); 1210 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1211 * that can lead to creation of a new cctx */
1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1212 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1213 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1085 1214
1086 PUSHMARK (SP); 1215 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1216 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1217
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1218 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1219 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1220}
1095 1221
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1222/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1223INLINE void
1098transfer_tail (pTHX) 1224transfer_tail (pTHX)
1099{ 1225{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1226 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1227}
1116 1228
1117/* 1229/*
1118 * this is a _very_ stripped down perl interpreter ;) 1230 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1231 */
… …
1126# endif 1238# endif
1127#endif 1239#endif
1128 { 1240 {
1129 dTHX; 1241 dTHX;
1130 1242
1131 /* we are the alternative tail to pp_set_stacklevel */ 1243 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1244 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1245 /* PL_nop = PL_nop->op_next */
1137 1246
1138 /* inject a fake subroutine call to cctx_init */ 1247 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1248 cctx_prepare (aTHX);
1140 1249
1141 /* cctx_run is the alternative tail of transfer() */ 1250 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1251 transfer_tail (aTHX);
1143 1252
1144 /* somebody or something will hit me for both perl_run and PL_restartop */ 1253 /* somebody or something will hit me for both perl_run and PL_restartop */
1145 PL_restartop = PL_op; 1254 PL_restartop = PL_op;
1146 perl_run (PL_curinterp); 1255 perl_run (PL_curinterp);
1256 /*
1257 * Unfortunately, there is no way to get at the return values of the
1258 * coro body here, as perl_run destroys these
1259 */
1147 1260
1148 /* 1261 /*
1149 * If perl-run returns we assume exit() was being called or the coro 1262 * If perl-run returns we assume exit() was being called or the coro
1150 * fell off the end, which seems to be the only valid (non-bug) 1263 * fell off the end, which seems to be the only valid (non-bug)
1151 * reason for perl_run to return. We try to exit by jumping to the 1264 * reason for perl_run to return. We try to exit by jumping to the
1152 * bootstrap-time "top" top_env, as we cannot restore the "main" 1265 * bootstrap-time "top" top_env, as we cannot restore the "main"
1153 * coroutine as Coro has no such concept 1266 * coroutine as Coro has no such concept.
1267 * This actually isn't valid with the pthread backend, but OSes requiring
1268 * that backend are too broken to do it in a standards-compliant way.
1154 */ 1269 */
1155 PL_top_env = main_top_env; 1270 PL_top_env = main_top_env;
1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1271 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 } 1272 }
1158} 1273}
… …
1235cctx_destroy (coro_cctx *cctx) 1350cctx_destroy (coro_cctx *cctx)
1236{ 1351{
1237 if (!cctx) 1352 if (!cctx)
1238 return; 1353 return;
1239 1354
1355 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1356
1240 --cctx_count; 1357 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1358 coro_destroy (&cctx->cctx);
1242 1359
1243 /* coro_transfer creates new, empty cctx's */ 1360 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr) 1361 if (cctx->sptr)
… …
1302/** coroutine switching *****************************************************/ 1419/** coroutine switching *****************************************************/
1303 1420
1304static void 1421static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1422transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1423{
1424 /* TODO: throwing up here is considered harmful */
1425
1307 if (expect_true (prev != next)) 1426 if (expect_true (prev != next))
1308 { 1427 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1428 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1429 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1311 1430
1312 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1314
1315 if (expect_false (next->flags & CF_DESTROYED)) 1431 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1432 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1317 1433
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1434#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1435 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1436 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1437#endif
1322 } 1438 }
1323} 1439}
1324 1440
1325/* always use the TRANSFER macro */ 1441/* always use the TRANSFER macro */
1326static void NOINLINE 1442static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1443transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1444{
1329 dSTACKLEVEL; 1445 dSTACKLEVEL;
1330 1446
1331 /* sometimes transfer is only called to set idle_sp */ 1447 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1448 if (expect_false (!prev))
1333 { 1449 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1450 cctx_current->idle_sp = STACKLEVEL;
1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1451 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1336 } 1452 }
1337 else if (expect_true (prev != next)) 1453 else if (expect_true (prev != next))
1338 { 1454 {
1339 coro_cctx *prev__cctx; 1455 coro_cctx *cctx_prev;
1340 1456
1341 if (expect_false (prev->flags & CF_NEW)) 1457 if (expect_false (prev->flags & CF_NEW))
1342 { 1458 {
1343 /* create a new empty/source context */ 1459 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1460 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1461 prev->flags |= CF_RUNNING;
1347 } 1462 }
1348 1463
1349 prev->flags &= ~CF_RUNNING; 1464 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1465 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1466
1354 /* first get rid of the old state */ 1467 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1468 save_perl (aTHX_ prev);
1356 1469
1357 if (expect_false (next->flags & CF_NEW)) 1470 if (expect_false (next->flags & CF_NEW))
… …
1362 coro_setup (aTHX_ next); 1475 coro_setup (aTHX_ next);
1363 } 1476 }
1364 else 1477 else
1365 load_perl (aTHX_ next); 1478 load_perl (aTHX_ next);
1366 1479
1367 prev__cctx = prev->cctx;
1368
1369 /* possibly untie and reuse the cctx */ 1480 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1481 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1482 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1483 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1484 && !force_cctx
1374 )) 1485 ))
1375 { 1486 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1487 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1488 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1378 1489
1379 prev->cctx = 0;
1380
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1490 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1382 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1491 /* without this the next cctx_get might destroy the running cctx while still in use */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1492 if (expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1493 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1494 next->cctx = cctx_get (aTHX);
1386 1495
1387 cctx_put (prev__cctx); 1496 cctx_put (cctx_current);
1388 } 1497 }
1498 else
1499 prev->cctx = cctx_current;
1389 1500
1390 ++next->usecount; 1501 ++next->usecount;
1391 1502
1392 if (expect_true (!next->cctx)) 1503 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1504 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1505
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1506 next->cctx = 0;
1396 transfer_next = next;
1397 1507
1398 if (expect_false (prev__cctx != next->cctx)) 1508 if (expect_false (cctx_prev != cctx_current))
1399 { 1509 {
1400 prev__cctx->top_env = PL_top_env; 1510 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1511 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1512 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1513 }
1404 1514
1405 transfer_tail (aTHX); 1515 transfer_tail (aTHX);
1406 } 1516 }
1407} 1517}
… …
1414static int 1524static int
1415coro_state_destroy (pTHX_ struct coro *coro) 1525coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1526{
1417 if (coro->flags & CF_DESTROYED) 1527 if (coro->flags & CF_DESTROYED)
1418 return 0; 1528 return 0;
1529
1530 if (coro->on_destroy && !PL_dirty)
1531 coro->on_destroy (aTHX_ coro);
1419 1532
1420 coro->flags |= CF_DESTROYED; 1533 coro->flags |= CF_DESTROYED;
1421 1534
1422 if (coro->flags & CF_READY) 1535 if (coro->flags & CF_READY)
1423 { 1536 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1537 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1538 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1539 --coro_nready;
1428 UNLOCK;
1429 } 1540 }
1430 else 1541 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1542 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1543
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1544 if (coro->mainstack
1434 { 1545 && coro->mainstack != main_mainstack
1435 struct coro temp; 1546 && coro->slot
1436 1547 && !PL_dirty)
1437 if (coro->flags & CF_RUNNING)
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439
1440 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro);
1442
1443 coro_destruct (aTHX_ coro); 1548 coro_destruct_perl (aTHX_ coro);
1444
1445 load_perl (aTHX_ &temp);
1446
1447 coro->slot = 0;
1448 }
1449 1549
1450 cctx_destroy (coro->cctx); 1550 cctx_destroy (coro->cctx);
1551 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1552 SvREFCNT_dec (coro->args);
1553 SvREFCNT_dec (CORO_THROW);
1452 1554
1453 if (coro->next) coro->next->prev = coro->prev; 1555 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1556 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1557 if (coro == coro_first) coro_first = coro->next;
1456 1558
… …
1494# define MGf_DUP 0 1596# define MGf_DUP 0
1495#endif 1597#endif
1496}; 1598};
1497 1599
1498static void 1600static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1601prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1602{
1501 ta->prev = SvSTATE (prev_sv); 1603 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1604 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1605 TRANSFER_CHECK (*ta);
1504} 1606}
1505 1607
1506static void 1608static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1609api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1610{
1509 dTHX;
1510 struct transfer_args ta; 1611 struct coro_transfer_args ta;
1511 1612
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1613 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1614 TRANSFER (ta, 1);
1514} 1615}
1515 1616
1617/*****************************************************************************/
1618/* gensub: simple closure generation utility */
1619
1620#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1621
1622/* create a closure from XS, returns a code reference */
1623/* the arg can be accessed via GENSUB_ARG from the callback */
1624/* the callback must use dXSARGS/XSRETURN */
1625static SV *
1626gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1627{
1628 CV *cv = (CV *)newSV (0);
1629
1630 sv_upgrade ((SV *)cv, SVt_PVCV);
1631
1632 CvANON_on (cv);
1633 CvISXSUB_on (cv);
1634 CvXSUB (cv) = xsub;
1635 GENSUB_ARG = arg;
1636
1637 return newRV_noinc ((SV *)cv);
1638}
1639
1516/** Coro ********************************************************************/ 1640/** Coro ********************************************************************/
1517 1641
1518static void 1642INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1643coro_enq (pTHX_ struct coro *coro)
1520{ 1644{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1522}
1523 1646
1524static SV * 1647 SvREFCNT_inc_NN (coro->hv);
1648
1649 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro;
1652}
1653
1654INLINE struct coro *
1525coro_deq (pTHX) 1655coro_deq (pTHX)
1526{ 1656{
1527 int prio; 1657 int prio;
1528 1658
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1530 if (AvFILLp (coro_ready [prio]) >= 0) 1660 {
1531 return av_shift (coro_ready [prio]); 1661 struct coro **ready = coro_ready [prio];
1662
1663 if (ready [0])
1664 {
1665 struct coro *coro = ready [0];
1666 ready [0] = coro->next_ready;
1667 return coro;
1668 }
1669 }
1532 1670
1533 return 0; 1671 return 0;
1534} 1672}
1535 1673
1536static int 1674static int
1537api_ready (SV *coro_sv) 1675api_ready (pTHX_ SV *coro_sv)
1538{ 1676{
1539 dTHX;
1540 struct coro *coro; 1677 struct coro *coro;
1541 SV *sv_hook; 1678 SV *sv_hook;
1542 void (*xs_hook)(void); 1679 void (*xs_hook)(void);
1543 1680
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1681 coro = SvSTATE (coro_sv);
1548 1682
1549 if (coro->flags & CF_READY) 1683 if (coro->flags & CF_READY)
1550 return 0; 1684 return 0;
1551 1685
1552 coro->flags |= CF_READY; 1686 coro->flags |= CF_READY;
1553 1687
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1688 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1689 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1690
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1691 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1692 ++coro_nready;
1561 1693
1562 UNLOCK;
1563
1564 if (sv_hook) 1694 if (sv_hook)
1565 { 1695 {
1566 dSP; 1696 dSP;
1567 1697
1568 ENTER; 1698 ENTER;
1569 SAVETMPS; 1699 SAVETMPS;
1570 1700
1571 PUSHMARK (SP); 1701 PUSHMARK (SP);
1572 PUTBACK; 1702 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1703 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1704
1576 FREETMPS; 1705 FREETMPS;
1577 LEAVE; 1706 LEAVE;
1578 } 1707 }
1579 1708
… …
1582 1711
1583 return 1; 1712 return 1;
1584} 1713}
1585 1714
1586static int 1715static int
1587api_is_ready (SV *coro_sv) 1716api_is_ready (pTHX_ SV *coro_sv)
1588{ 1717{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1718 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1719}
1593 1720
1721/* expects to own a reference to next->hv */
1594INLINE void 1722INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1723prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1724{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;)
1600 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX);
1603
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv))
1606 {
1607 dSP;
1608 UNLOCK;
1609
1610 ENTER;
1611 SAVETMPS;
1612
1613 PUSHMARK (SP);
1614 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1725 SV *prev_sv = SvRV (coro_current);
1726
1641 ta->prev = SvSTATE (prev_sv); 1727 ta->prev = SvSTATE_hv (prev_sv);
1728 ta->next = next;
1729
1642 TRANSFER_CHECK (*ta); 1730 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1731
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1732 SvRV_set (coro_current, (SV *)next->hv);
1646 1733
1647 LOCK;
1648 free_coro_mortal (aTHX); 1734 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1735 coro_mortal = prev_sv;
1650 UNLOCK; 1736}
1737
1738static void
1739prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1740{
1741 for (;;)
1742 {
1743 struct coro *next = coro_deq (aTHX);
1744
1745 if (expect_true (next))
1746 {
1747 /* cannot transfer to destroyed coros, skip and look for next */
1748 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1749 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1750 else
1751 {
1752 next->flags &= ~CF_READY;
1753 --coro_nready;
1754
1755 prepare_schedule_to (aTHX_ ta, next);
1756 break;
1757 }
1758 }
1759 else
1760 {
1761 /* nothing to schedule: call the idle handler */
1762 if (SvROK (sv_idle)
1763 && SvOBJECT (SvRV (sv_idle)))
1764 {
1765 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1766 api_ready (aTHX_ SvRV (sv_idle));
1767 --coro_nready;
1768 }
1769 else
1770 {
1771 dSP;
1772
1773 ENTER;
1774 SAVETMPS;
1775
1776 PUSHMARK (SP);
1777 PUTBACK;
1778 call_sv (sv_idle, G_VOID | G_DISCARD);
1779
1780 FREETMPS;
1781 LEAVE;
1782 }
1783 }
1784 }
1651} 1785}
1652 1786
1653INLINE void 1787INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1788prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1789{
1656 api_ready (coro_current); 1790 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1791 prepare_schedule (aTHX_ ta);
1658} 1792}
1659 1793
1660static void 1794INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1795prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1796{
1663 SV *prev = SvRV (coro_current); 1797 SV *prev = SvRV (coro_current);
1664 1798
1665 if (coro_nready) 1799 if (coro_nready)
1666 { 1800 {
1667 prepare_schedule (aTHX_ ta); 1801 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1802 api_ready (aTHX_ prev);
1669 } 1803 }
1670 else 1804 else
1671 ta->prev = ta->next = SvSTATE (prev); 1805 prepare_nop (aTHX_ ta);
1672} 1806}
1673 1807
1674static void 1808static void
1675api_schedule (void) 1809api_schedule (pTHX)
1676{ 1810{
1677 dTHX;
1678 struct transfer_args ta; 1811 struct coro_transfer_args ta;
1679 1812
1680 prepare_schedule (aTHX_ &ta); 1813 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1814 TRANSFER (ta, 1);
1682} 1815}
1683 1816
1817static void
1818api_schedule_to (pTHX_ SV *coro_sv)
1819{
1820 struct coro_transfer_args ta;
1821 struct coro *next = SvSTATE (coro_sv);
1822
1823 SvREFCNT_inc_NN (coro_sv);
1824 prepare_schedule_to (aTHX_ &ta, next);
1825}
1826
1684static int 1827static int
1685api_cede (void) 1828api_cede (pTHX)
1686{ 1829{
1687 dTHX;
1688 struct transfer_args ta; 1830 struct coro_transfer_args ta;
1689 1831
1690 prepare_cede (aTHX_ &ta); 1832 prepare_cede (aTHX_ &ta);
1691 1833
1692 if (expect_true (ta.prev != ta.next)) 1834 if (expect_true (ta.prev != ta.next))
1693 { 1835 {
… …
1697 else 1839 else
1698 return 0; 1840 return 0;
1699} 1841}
1700 1842
1701static int 1843static int
1702api_cede_notself (void) 1844api_cede_notself (pTHX)
1703{ 1845{
1704 if (coro_nready) 1846 if (coro_nready)
1705 { 1847 {
1706 dTHX;
1707 struct transfer_args ta; 1848 struct coro_transfer_args ta;
1708 1849
1709 prepare_cede_notself (aTHX_ &ta); 1850 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1851 TRANSFER (ta, 1);
1711 return 1; 1852 return 1;
1712 } 1853 }
1713 else 1854 else
1714 return 0; 1855 return 0;
1715} 1856}
1716 1857
1717static void 1858static void
1718api_trace (SV *coro_sv, int flags) 1859api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1860{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1861 struct coro *coro = SvSTATE (coro_sv);
1862
1863 if (coro->flags & CF_RUNNING)
1864 croak ("cannot enable tracing on a running coroutine, caught");
1722 1865
1723 if (flags & CC_TRACE) 1866 if (flags & CC_TRACE)
1724 { 1867 {
1725 if (!coro->cctx) 1868 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1869 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1870 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1871 croak ("cannot enable tracing on coroutine with custom stack, caught");
1729 1872
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1873 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1874 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1875 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1876 {
… …
1738 else 1881 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1882 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1883 }
1741} 1884}
1742 1885
1743#if 0 1886static void
1887coro_call_on_destroy (pTHX_ struct coro *coro)
1888{
1889 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1890 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1891
1892 if (on_destroyp)
1893 {
1894 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1895
1896 while (AvFILLp (on_destroy) >= 0)
1897 {
1898 dSP; /* don't disturb outer sp */
1899 SV *cb = av_pop (on_destroy);
1900
1901 PUSHMARK (SP);
1902
1903 if (statusp)
1904 {
1905 int i;
1906 AV *status = (AV *)SvRV (*statusp);
1907 EXTEND (SP, AvFILLp (status) + 1);
1908
1909 for (i = 0; i <= AvFILLp (status); ++i)
1910 PUSHs (AvARRAY (status)[i]);
1911 }
1912
1913 PUTBACK;
1914 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1915 }
1916 }
1917}
1918
1919static void
1920slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1921{
1922 int i;
1923 HV *hv = (HV *)SvRV (coro_current);
1924 AV *av = newAV ();
1925
1926 av_extend (av, items - 1);
1927 for (i = 0; i < items; ++i)
1928 av_push (av, SvREFCNT_inc_NN (arg [i]));
1929
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1931
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager);
1934
1935 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat;
1937
1938 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/
1941}
1942
1943/*****************************************************************************/
1944/* async pool handler */
1945
1744static int 1946static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1746{ 1948{
1747 AV *padlist; 1949 HV *hv = (HV *)SvRV (coro_current);
1748 AV *av = (AV *)mg->mg_obj; 1950 struct coro *coro = (struct coro *)frame->data;
1749 1951
1750 abort (); 1952 if (!coro->invoke_cb)
1953 return 1; /* loop till we have invoke */
1954 else
1955 {
1956 hv_store (hv, "desc", sizeof ("desc") - 1,
1957 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1958
1959 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1960
1961 {
1962 dSP;
1963 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1964 PUTBACK;
1965 }
1966
1967 SvREFCNT_dec (GvAV (PL_defgv));
1968 GvAV (PL_defgv) = coro->invoke_av;
1969 coro->invoke_av = 0;
1970
1971 return 0;
1972 }
1973}
1974
1975static void
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{
1978 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980
1981 if (expect_true (coro->saved_deffh))
1982 {
1983 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0;
1986
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1991 coro->invoke_av = newAV ();
1992
1993 frame->prepare = prepare_nop;
1994 }
1995 else
1996 {
1997 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999
2000 coro->prio = 0;
2001
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0);
2004
2005 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 }
2008 }
2009 else
2010 {
2011 /* first iteration, simply fall through */
2012 frame->prepare = prepare_nop;
2013 }
2014
2015 frame->check = slf_check_pool_handler;
2016 frame->data = (void *)coro;
2017}
2018
2019/*****************************************************************************/
2020/* rouse callback */
2021
2022#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2023
2024static void
2025coro_rouse_callback (pTHX_ CV *cv)
2026{
2027 dXSARGS;
2028 SV *data = (SV *)GENSUB_ARG;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 {
2032 /* first call, set args */
2033 SV *coro = SvRV (data);
2034 AV *av = newAV ();
2035
2036 SvRV_set (data, (SV *)av);
2037
2038 /* better take a full copy of the arguments */
2039 while (items--)
2040 av_store (av, items, newSVsv (ST (items)));
2041
2042 api_ready (aTHX_ coro);
2043 SvREFCNT_dec (coro);
2044 }
2045
2046 XSRETURN_EMPTY;
2047}
2048
2049static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{
2052 SV *data = (SV *)frame->data;
2053
2054 if (CORO_THROW)
2055 return 0;
2056
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1;
2059
2060 /* now push all results on the stack */
2061 {
2062 dSP;
2063 AV *av = (AV *)SvRV (data);
2064 int i;
2065
2066 EXTEND (SP, AvFILLp (av) + 1);
2067 for (i = 0; i <= AvFILLp (av); ++i)
2068 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2069
2070 /* we have stolen the elements, so set length to zero and free */
2071 AvFILLp (av) = -1;
2072 av_undef (av);
2073
2074 PUTBACK;
2075 }
1751 2076
1752 return 0; 2077 return 0;
1753} 2078}
1754 2079
1755static MGVTBL coro_gensub_vtbl = { 2080static void
1756 0, 0, 0, 0, 2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 2082{
1758}; 2083 SV *cb;
1759#endif 2084
2085 if (items)
2086 cb = arg [0];
2087 else
2088 {
2089 struct coro *coro = SvSTATE_current;
2090
2091 if (!coro->rouse_cb)
2092 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2093
2094 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0;
2096 }
2097
2098 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,");
2102
2103 {
2104 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2105 SV *data = (SV *)GENSUB_ARG;
2106
2107 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait;
2110 }
2111}
2112
2113static SV *
2114coro_new_rouse_cb (pTHX)
2115{
2116 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2120
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */
2123
2124 SvREFCNT_dec (coro->rouse_cb);
2125 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2126
2127 return cb;
2128}
2129
2130/*****************************************************************************/
2131/* schedule-like-function opcode (SLF) */
2132
2133static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2134static const CV *slf_cv;
2135static SV **slf_argv;
2136static int slf_argc, slf_arga; /* count, allocated */
2137static I32 slf_ax; /* top of stack, for restore */
2138
2139/* this restores the stack in the case we patched the entersub, to */
2140/* recreate the stack frame as perl will on following calls */
2141/* since entersub cleared the stack */
2142static OP *
2143pp_restore (pTHX)
2144{
2145 int i;
2146 SV **SP = PL_stack_base + slf_ax;
2147
2148 PUSHMARK (SP);
2149
2150 EXTEND (SP, slf_argc + 1);
2151
2152 for (i = 0; i < slf_argc; ++i)
2153 PUSHs (sv_2mortal (slf_argv [i]));
2154
2155 PUSHs ((SV *)CvGV (slf_cv));
2156
2157 RETURNOP (slf_restore.op_first);
2158}
2159
2160static void
2161slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2162{
2163 SV **arg = (SV **)slf_frame.data;
2164
2165 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2166}
2167
2168static void
2169slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (items != 2)
2172 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2173
2174 frame->prepare = slf_prepare_transfer;
2175 frame->check = slf_check_nop;
2176 frame->data = (void *)arg; /* let's hope it will stay valid */
2177}
2178
2179static void
2180slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 frame->prepare = prepare_schedule;
2183 frame->check = slf_check_nop;
2184}
2185
2186static void
2187slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2188{
2189 struct coro *next = (struct coro *)slf_frame.data;
2190
2191 SvREFCNT_inc_NN (next->hv);
2192 prepare_schedule_to (aTHX_ ta, next);
2193}
2194
2195static void
2196slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 if (!items)
2199 croak ("Coro::schedule_to expects a coroutine argument, caught");
2200
2201 frame->data = (void *)SvSTATE (arg [0]);
2202 frame->prepare = slf_prepare_schedule_to;
2203 frame->check = slf_check_nop;
2204}
2205
2206static void
2207slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2208{
2209 api_ready (aTHX_ SvRV (coro_current));
2210
2211 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2212}
2213
2214static void
2215slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 frame->prepare = prepare_cede;
2218 frame->check = slf_check_nop;
2219}
2220
2221static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop;
2226}
2227
2228/*
2229 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same
2231 * stack offset
2232 * SLF stands for "schedule-like-function".
2233 */
2234static OP *
2235pp_slf (pTHX)
2236{
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238
2239 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare))
2243 {
2244 /* first iteration */
2245 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */
2248 SV *gv = *sp;
2249
2250 /* do a quick consistency check on the "function" object, and if it isn't */
2251 /* for us, divert to the real entersub */
2252 if (SvTYPE (gv) != SVt_PVGV
2253 || !GvCV (gv)
2254 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2255 return PL_ppaddr[OP_ENTERSUB](aTHX);
2256
2257 if (!(PL_op->op_flags & OPf_STACKED))
2258 {
2259 /* ampersand-form of call, use @_ instead of stack */
2260 AV *av = GvAV (PL_defgv);
2261 arg = AvARRAY (av);
2262 items = AvFILLp (av) + 1;
2263 }
2264
2265 /* now call the init function, which needs to set up slf_frame */
2266 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2267 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2268
2269 /* pop args */
2270 SP = PL_stack_base + POPMARK;
2271
2272 PUTBACK;
2273 }
2274
2275 /* now that we have a slf_frame, interpret it! */
2276 /* we use a callback system not to make the code needlessly */
2277 /* complicated, but so we can run multiple perl coros from one cctx */
2278
2279 do
2280 {
2281 struct coro_transfer_args ta;
2282
2283 slf_frame.prepare (aTHX_ &ta);
2284 TRANSFER (ta, 0);
2285
2286 checkmark = PL_stack_sp - PL_stack_base;
2287 }
2288 while (slf_frame.check (aTHX_ &slf_frame));
2289
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291
2292 /* exception handling */
2293 if (expect_false (CORO_THROW))
2294 {
2295 SV *exception = sv_2mortal (CORO_THROW);
2296
2297 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception);
2299 croak (0);
2300 }
2301
2302 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR)
2305 {
2306 dSP;
2307 SV **bot = PL_stack_base + checkmark;
2308
2309 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */
2312 bot [1] = *sp;
2313
2314 SP = bot + 1;
2315
2316 PUTBACK;
2317 }
2318
2319 return NORMAL;
2320}
2321
2322static void
2323api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2324{
2325 int i;
2326 SV **arg = PL_stack_base + ax;
2327 int items = PL_stack_sp - arg + 1;
2328
2329 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2330
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334
2335 CvFLAGS (cv) |= CVf_SLF;
2336 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2337 slf_cv = cv;
2338
2339 /* we patch the op, and then re-run the whole call */
2340 /* we have to put the same argument on the stack for this to work */
2341 /* and this will be done by pp_restore */
2342 slf_restore.op_next = (OP *)&slf_restore;
2343 slf_restore.op_type = OP_CUSTOM;
2344 slf_restore.op_ppaddr = pp_restore;
2345 slf_restore.op_first = PL_op;
2346
2347 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2348
2349 if (PL_op->op_flags & OPf_STACKED)
2350 {
2351 if (items > slf_arga)
2352 {
2353 slf_arga = items;
2354 free (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *));
2356 }
2357
2358 slf_argc = items;
2359
2360 for (i = 0; i < items; ++i)
2361 slf_argv [i] = SvREFCNT_inc (arg [i]);
2362 }
2363 else
2364 slf_argc = 0;
2365
2366 PL_op->op_ppaddr = pp_slf;
2367 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2368
2369 PL_op = (OP *)&slf_restore;
2370}
2371
2372/*****************************************************************************/
2373/* dynamic wind */
2374
2375static void
2376on_enterleave_call (pTHX_ SV *cb)
2377{
2378 dSP;
2379
2380 PUSHSTACK;
2381
2382 PUSHMARK (SP);
2383 PUTBACK;
2384 call_sv (cb, G_VOID | G_DISCARD);
2385 SPAGAIN;
2386
2387 POPSTACK;
2388}
2389
2390static SV *
2391coro_avp_pop_and_free (pTHX_ AV **avp)
2392{
2393 AV *av = *avp;
2394 SV *res = av_pop (av);
2395
2396 if (AvFILLp (av) < 0)
2397 {
2398 *avp = 0;
2399 SvREFCNT_dec (av);
2400 }
2401
2402 return res;
2403}
2404
2405static void
2406coro_pop_on_enter (pTHX_ void *coro)
2407{
2408 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2409 SvREFCNT_dec (cb);
2410}
2411
2412static void
2413coro_pop_on_leave (pTHX_ void *coro)
2414{
2415 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2416 on_enterleave_call (aTHX_ sv_2mortal (cb));
2417}
1760 2418
1761/*****************************************************************************/ 2419/*****************************************************************************/
1762/* PerlIO::cede */ 2420/* PerlIO::cede */
1763 2421
1764typedef struct 2422typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2450 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2451 double now = nvtime ();
1794 2452
1795 if (now >= self->next) 2453 if (now >= self->next)
1796 { 2454 {
1797 api_cede (); 2455 api_cede (aTHX);
1798 self->next = now + self->every; 2456 self->next = now + self->every;
1799 } 2457 }
1800 2458
1801 return PerlIOBuf_flush (aTHX_ f); 2459 return PerlIOBuf_flush (aTHX_ f);
1802} 2460}
… …
1832 PerlIOBuf_get_cnt, 2490 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2491 PerlIOBuf_set_ptrcnt,
1834}; 2492};
1835 2493
1836/*****************************************************************************/ 2494/*****************************************************************************/
2495/* Coro::Semaphore & Coro::Signal */
1837 2496
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2497static SV *
1848pp_restore (pTHX) 2498coro_waitarray_new (pTHX_ int count)
1849{ 2499{
2500 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2501 AV *av = newAV ();
2502 SV **ary;
2503
2504 /* unfortunately, building manually saves memory */
2505 Newx (ary, 2, SV *);
2506 AvALLOC (av) = ary;
2507#if PERL_VERSION_ATLEAST (5,10,0)
2508 AvARRAY (av) = ary;
2509#else
2510 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2511 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2512 SvPVX ((SV *)av) = (char *)ary;
2513#endif
2514 AvMAX (av) = 1;
2515 AvFILLp (av) = 0;
2516 ary [0] = newSViv (count);
2517
2518 return newRV_noinc ((SV *)av);
2519}
2520
2521/* semaphore */
2522
2523static void
2524coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2525{
2526 SV *count_sv = AvARRAY (av)[0];
2527 IV count = SvIVX (count_sv);
2528
2529 count += adjust;
2530 SvIVX (count_sv) = count;
2531
2532 /* now wake up as many waiters as are expected to lock */
2533 while (count > 0 && AvFILLp (av) > 0)
2534 {
2535 SV *cb;
2536
2537 /* swap first two elements so we can shift a waiter */
2538 AvARRAY (av)[0] = AvARRAY (av)[1];
2539 AvARRAY (av)[1] = count_sv;
2540 cb = av_shift (av);
2541
2542 if (SvOBJECT (cb))
2543 {
2544 api_ready (aTHX_ cb);
2545 --count;
2546 }
2547 else if (SvTYPE (cb) == SVt_PVCV)
2548 {
2549 dSP;
2550 PUSHMARK (SP);
2551 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2552 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2554 }
2555
2556 SvREFCNT_dec (cb);
2557 }
2558}
2559
2560static void
2561coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2562{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2565}
2566
2567static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{
2570 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0];
2572
2573 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW)
2575 return 0;
2576 else if (SvIVX (count_sv) > 0)
2577 {
2578 SvSTATE_current->on_destroy = 0;
2579
2580 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else
2583 coro_semaphore_adjust (aTHX_ av, 0);
2584
2585 return 0;
2586 }
2587 else
2588 {
2589 int i;
2590 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */
2593
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current))
2596 return 1;
2597
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2599 return 1;
2600 }
2601}
2602
2603static int
2604slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2607}
2608
2609static int
2610slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2611{
2612 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2613}
2614
2615static void
2616slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2617{
2618 AV *av = (AV *)SvRV (arg [0]);
2619
2620 if (SvIVX (AvARRAY (av)[0]) > 0)
2621 {
2622 frame->data = (void *)av;
2623 frame->prepare = prepare_nop;
2624 }
2625 else
2626 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2635 }
2636}
2637
2638static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2640{
2641 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2642 frame->check = slf_check_semaphore_down;
2643}
2644
2645static void
2646slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2647{
2648 if (items >= 2)
2649 {
2650 /* callback form */
2651 AV *av = (AV *)SvRV (arg [0]);
2652 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2653
2654 av_push (av, SvREFCNT_inc_NN (cb_cv));
2655
2656 if (SvIVX (AvARRAY (av)[0]) > 0)
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 frame->prepare = prepare_nop;
2660 frame->check = slf_check_nop;
2661 }
2662 else
2663 {
2664 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2665 frame->check = slf_check_semaphore_wait;
2666 }
2667}
2668
2669/* signal */
2670
2671static void
2672coro_signal_wake (pTHX_ AV *av, int count)
2673{
2674 SvIVX (AvARRAY (av)[0]) = 0;
2675
2676 /* now signal count waiters */
2677 while (count > 0 && AvFILLp (av) > 0)
2678 {
2679 SV *cb;
2680
2681 /* swap first two elements so we can shift a waiter */
2682 cb = AvARRAY (av)[0];
2683 AvARRAY (av)[0] = AvARRAY (av)[1];
2684 AvARRAY (av)[1] = cb;
2685
2686 cb = av_shift (av);
2687
2688 if (SvTYPE (cb) == SVt_PVCV)
2689 {
2690 dSP;
2691 PUSHMARK (SP);
2692 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2693 PUTBACK;
2694 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2695 }
2696 else
2697 {
2698 api_ready (aTHX_ cb);
2699 sv_setiv (cb, 0); /* signal waiter */
2700 }
2701
2702 SvREFCNT_dec (cb);
2703
2704 --count;
2705 }
2706}
2707
2708static int
2709slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2710{
2711 /* if we are about to throw, also stop waiting */
2712 return SvROK ((SV *)frame->data) && !CORO_THROW;
2713}
2714
2715static void
2716slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2717{
2718 AV *av = (AV *)SvRV (arg [0]);
2719
2720 if (items >= 2)
2721 {
2722 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else if (SvIVX (AvARRAY (av)[0]))
2732 {
2733 SvIVX (AvARRAY (av)[0]) = 0;
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2740
2741 av_push (av, waiter);
2742
2743 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2744 frame->prepare = prepare_schedule;
2745 frame->check = slf_check_signal_wait;
2746 }
2747}
2748
2749/*****************************************************************************/
2750/* Coro::AIO */
2751
2752#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2753
2754/* helper storage struct */
2755struct io_state
2756{
2757 int errorno;
2758 I32 laststype; /* U16 in 5.10.0 */
2759 int laststatval;
2760 Stat_t statcache;
2761};
2762
2763static void
2764coro_aio_callback (pTHX_ CV *cv)
2765{
2766 dXSARGS;
2767 AV *state = (AV *)GENSUB_ARG;
2768 SV *coro = av_pop (state);
2769 SV *data_sv = newSV (sizeof (struct io_state));
2770
2771 av_extend (state, items - 1);
2772
2773 sv_upgrade (data_sv, SVt_PV);
2774 SvCUR_set (data_sv, sizeof (struct io_state));
2775 SvPOK_only (data_sv);
2776
2777 {
2778 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2779
2780 data->errorno = errno;
2781 data->laststype = PL_laststype;
2782 data->laststatval = PL_laststatval;
2783 data->statcache = PL_statcache;
2784 }
2785
2786 /* now build the result vector out of all the parameters and the data_sv */
2787 {
2788 int i;
2789
2790 for (i = 0; i < items; ++i)
2791 av_push (state, SvREFCNT_inc_NN (ST (i)));
2792 }
2793
2794 av_push (state, data_sv);
2795
2796 api_ready (aTHX_ coro);
2797 SvREFCNT_dec (coro);
2798 SvREFCNT_dec ((AV *)state);
2799}
2800
2801static int
2802slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2803{
2804 AV *state = (AV *)frame->data;
2805
2806 /* if we are about to throw, return early */
2807 /* this does not cancel the aio request, but at least */
2808 /* it quickly returns */
2809 if (CORO_THROW)
2810 return 0;
2811
2812 /* one element that is an RV? repeat! */
2813 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2814 return 1;
2815
2816 /* restore status */
2817 {
2818 SV *data_sv = av_pop (state);
2819 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2820
2821 errno = data->errorno;
2822 PL_laststype = data->laststype;
2823 PL_laststatval = data->laststatval;
2824 PL_statcache = data->statcache;
2825
2826 SvREFCNT_dec (data_sv);
2827 }
2828
2829 /* push result values */
2830 {
1850 dSP; 2831 dSP;
2832 int i;
1851 2833
2834 EXTEND (SP, AvFILLp (state) + 1);
2835 for (i = 0; i <= AvFILLp (state); ++i)
2836 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2837
2838 PUTBACK;
2839 }
2840
2841 return 0;
2842}
2843
2844static void
2845slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2846{
2847 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2848 SV *coro_hv = SvRV (coro_current);
2849 struct coro *coro = SvSTATE_hv (coro_hv);
2850
2851 /* put our coroutine id on the state arg */
2852 av_push (state, SvREFCNT_inc_NN (coro_hv));
2853
2854 /* first see whether we have a non-zero priority and set it as AIO prio */
2855 if (coro->prio)
2856 {
2857 dSP;
2858
2859 static SV *prio_cv;
2860 static SV *prio_sv;
2861
2862 if (expect_false (!prio_cv))
2863 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0);
2866 }
2867
2868 PUSHMARK (SP);
2869 sv_setiv (prio_sv, coro->prio);
2870 XPUSHs (prio_sv);
2871
2872 PUTBACK;
2873 call_sv (prio_cv, G_VOID | G_DISCARD);
2874 }
2875
2876 /* now call the original request */
2877 {
2878 dSP;
2879 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2880 int i;
2881
1852 PUSHMARK (SP); 2882 PUSHMARK (SP);
1853 2883
1854 EXTEND (SP, 3); 2884 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2885 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2886
1859 RETURNOP (ssl_restore.op_first); 2887 for (i = 0; i < items; ++i)
1860} 2888 PUSHs (arg [i]);
1861 2889
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2890 /* now push the callback closure */
2891 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2892
1864/* declare prototype */ 2893 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2894 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2895 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2896 }
1922 2897
1923 TRANSFER (ta, 0); 2898 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2899 frame->data = (void *)state;
1925 2900 frame->prepare = prepare_schedule;
1926skip: 2901 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2902}
1932 2903
1933static void 2904static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2905coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2906{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2907 dXSARGS;
1937 2908
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2909 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2910
1941 /* we patch the op, and then re-run the whole call */ 2911 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2912}
2913
2914/*****************************************************************************/
2915
2916#if CORO_CLONE
2917# include "clone.c"
2918#endif
1956 2919
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2920MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2921
1959PROTOTYPES: DISABLE 2922PROTOTYPES: DISABLE
1960 2923
1961BOOT: 2924BOOT:
1962{ 2925{
1963#ifdef USE_ITHREADS 2926#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 2927# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 2928 coro_thx = PERL_GET_CONTEXT;
1967# endif 2929# endif
1968#endif 2930#endif
1969 BOOT_PAGESIZE; 2931 BOOT_PAGESIZE;
2932
2933 cctx_current = cctx_new_empty ();
1970 2934
1971 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2935 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1972 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2936 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1973 2937
1974 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2938 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1990 main_top_env = PL_top_env; 2954 main_top_env = PL_top_env;
1991 2955
1992 while (main_top_env->je_prev) 2956 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 2957 main_top_env = main_top_env->je_prev;
1994 2958
2959 {
2960 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2961
2962 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2963 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2964
2965 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2966 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2967 }
2968
1995 coroapi.ver = CORO_API_VERSION; 2969 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 2970 coroapi.rev = CORO_API_REVISION;
2971
1997 coroapi.transfer = api_transfer; 2972 coroapi.transfer = api_transfer;
2973
2974 coroapi.sv_state = SvSTATE_;
2975 coroapi.execute_slf = api_execute_slf;
2976 coroapi.prepare_nop = prepare_nop;
2977 coroapi.prepare_schedule = prepare_schedule;
2978 coroapi.prepare_cede = prepare_cede;
2979 coroapi.prepare_cede_notself = prepare_cede_notself;
1998 2980
1999 { 2981 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2982 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 2983
2002 if (!svp) croak ("Time::HiRes is required"); 2984 if (!svp) croak ("Time::HiRes is required");
2003 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2985 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2004 2986
2005 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2987 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2006 } 2988 }
2007 2989
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2990 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2009} 2991}
2010 2992
2011SV * 2993SV *
2012new (char *klass, ...) 2994new (char *klass, ...)
2995 ALIAS:
2996 Coro::new = 1
2013 CODE: 2997 CODE:
2014{ 2998{
2015 struct coro *coro; 2999 struct coro *coro;
2016 MAGIC *mg; 3000 MAGIC *mg;
2017 HV *hv; 3001 HV *hv;
3002 CV *cb;
2018 int i; 3003 int i;
3004
3005 if (items > 1)
3006 {
3007 cb = coro_sv_2cv (aTHX_ ST (1));
3008
3009 if (!ix)
3010 {
3011 if (CvISXSUB (cb))
3012 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3013
3014 if (!CvROOT (cb))
3015 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3016 }
3017 }
2019 3018
2020 Newz (0, coro, 1, struct coro); 3019 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV (); 3020 coro->args = newAV ();
2022 coro->flags = CF_NEW; 3021 coro->flags = CF_NEW;
2023 3022
… …
2028 coro->hv = hv = newHV (); 3027 coro->hv = hv = newHV ();
2029 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3028 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2030 mg->mg_flags |= MGf_DUP; 3029 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3030 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032 3031
3032 if (items > 1)
3033 {
2033 av_extend (coro->args, items - 1); 3034 av_extend (coro->args, items - 1 + ix - 1);
3035
3036 if (ix)
3037 {
3038 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3039 cb = cv_coro_run;
3040 }
3041
3042 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3043
2034 for (i = 1; i < items; i++) 3044 for (i = 2; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i))); 3045 av_push (coro->args, newSVsv (ST (i)));
3046 }
2036} 3047}
2037 OUTPUT: 3048 OUTPUT:
2038 RETVAL 3049 RETVAL
2039 3050
2040void 3051void
2041_set_stacklevel (...) 3052transfer (...)
2042 ALIAS: 3053 PROTOTYPE: $$
2043 Coro::State::transfer = 1 3054 CODE:
2044 Coro::schedule = 2 3055 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049 3056
2050bool 3057bool
2051_destroy (SV *coro_sv) 3058_destroy (SV *coro_sv)
2052 CODE: 3059 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3060 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2058_exit (int code) 3065_exit (int code)
2059 PROTOTYPE: $ 3066 PROTOTYPE: $
2060 CODE: 3067 CODE:
2061 _exit (code); 3068 _exit (code);
2062 3069
3070SV *
3071clone (Coro::State coro)
3072 CODE:
3073{
3074#if CORO_CLONE
3075 struct coro *ncoro = coro_clone (aTHX_ coro);
3076 MAGIC *mg;
3077 /* TODO: too much duplication */
3078 ncoro->hv = newHV ();
3079 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3080 mg->mg_flags |= MGf_DUP;
3081 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3082#else
3083 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3084#endif
3085}
3086 OUTPUT:
3087 RETVAL
3088
2063int 3089int
2064cctx_stacksize (int new_stacksize = 0) 3090cctx_stacksize (int new_stacksize = 0)
3091 PROTOTYPE: ;$
2065 CODE: 3092 CODE:
2066 RETVAL = cctx_stacksize; 3093 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 3094 if (new_stacksize)
2068 { 3095 {
2069 cctx_stacksize = new_stacksize; 3096 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 3099 OUTPUT:
2073 RETVAL 3100 RETVAL
2074 3101
2075int 3102int
2076cctx_max_idle (int max_idle = 0) 3103cctx_max_idle (int max_idle = 0)
3104 PROTOTYPE: ;$
2077 CODE: 3105 CODE:
2078 RETVAL = cctx_max_idle; 3106 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 3107 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 3108 cctx_max_idle = max_idle;
2081 OUTPUT: 3109 OUTPUT:
2082 RETVAL 3110 RETVAL
2083 3111
2084int 3112int
2085cctx_count () 3113cctx_count ()
3114 PROTOTYPE:
2086 CODE: 3115 CODE:
2087 RETVAL = cctx_count; 3116 RETVAL = cctx_count;
2088 OUTPUT: 3117 OUTPUT:
2089 RETVAL 3118 RETVAL
2090 3119
2091int 3120int
2092cctx_idle () 3121cctx_idle ()
3122 PROTOTYPE:
2093 CODE: 3123 CODE:
2094 RETVAL = cctx_idle; 3124 RETVAL = cctx_idle;
2095 OUTPUT: 3125 OUTPUT:
2096 RETVAL 3126 RETVAL
2097 3127
2098void 3128void
2099list () 3129list ()
3130 PROTOTYPE:
2100 PPCODE: 3131 PPCODE:
2101{ 3132{
2102 struct coro *coro; 3133 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 3134 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 3135 if (coro->hv)
… …
2111 eval = 1 3142 eval = 1
2112 CODE: 3143 CODE:
2113{ 3144{
2114 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3145 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2115 { 3146 {
2116 struct coro temp; 3147 struct coro *current = SvSTATE_current;
2117 3148
2118 if (!(coro->flags & CF_RUNNING)) 3149 if (current != coro)
2119 { 3150 {
2120 PUTBACK; 3151 PUTBACK;
2121 save_perl (aTHX_ &temp); 3152 save_perl (aTHX_ current);
2122 load_perl (aTHX_ coro); 3153 load_perl (aTHX_ coro);
3154 SPAGAIN;
2123 } 3155 }
2124 3156
2125 {
2126 dSP;
2127 ENTER;
2128 SAVETMPS;
2129 PUTBACK;
2130 PUSHSTACK; 3157 PUSHSTACK;
3158
2131 PUSHMARK (SP); 3159 PUSHMARK (SP);
3160 PUTBACK;
2132 3161
2133 if (ix) 3162 if (ix)
2134 eval_sv (coderef, 0); 3163 eval_sv (coderef, 0);
2135 else 3164 else
2136 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3165 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2137 3166
2138 POPSTACK; 3167 POPSTACK;
2139 SPAGAIN; 3168 SPAGAIN;
2140 FREETMPS;
2141 LEAVE;
2142 PUTBACK;
2143 }
2144 3169
2145 if (!(coro->flags & CF_RUNNING)) 3170 if (current != coro)
2146 { 3171 {
3172 PUTBACK;
2147 save_perl (aTHX_ coro); 3173 save_perl (aTHX_ coro);
2148 load_perl (aTHX_ &temp); 3174 load_perl (aTHX_ current);
2149 SPAGAIN; 3175 SPAGAIN;
2150 } 3176 }
2151 } 3177 }
2152} 3178}
2153 3179
… …
2157 ALIAS: 3183 ALIAS:
2158 is_ready = CF_READY 3184 is_ready = CF_READY
2159 is_running = CF_RUNNING 3185 is_running = CF_RUNNING
2160 is_new = CF_NEW 3186 is_new = CF_NEW
2161 is_destroyed = CF_DESTROYED 3187 is_destroyed = CF_DESTROYED
3188 is_suspended = CF_SUSPENDED
2162 CODE: 3189 CODE:
2163 RETVAL = boolSV (coro->flags & ix); 3190 RETVAL = boolSV (coro->flags & ix);
2164 OUTPUT: 3191 OUTPUT:
2165 RETVAL 3192 RETVAL
2166 3193
2167void 3194void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 3195throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 3196 PROTOTYPE: $;$
2170 CODE: 3197 CODE:
3198{
3199 struct coro *current = SvSTATE_current;
3200 SV **throwp = self == current ? &CORO_THROW : &self->except;
2171 SvREFCNT_dec (self->throw); 3201 SvREFCNT_dec (*throwp);
3202 SvGETMAGIC (throw);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3203 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3204}
2173 3205
2174void 3206void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3207api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3208 PROTOTYPE: $;$
3209 C_ARGS: aTHX_ coro, flags
2176 3210
2177SV * 3211SV *
2178has_cctx (Coro::State coro) 3212has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 3213 PROTOTYPE: $
2180 CODE: 3214 CODE:
2181 RETVAL = boolSV (!!coro->cctx); 3215 /* maybe manage the running flag differently */
3216 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2182 OUTPUT: 3217 OUTPUT:
2183 RETVAL 3218 RETVAL
2184 3219
2185int 3220int
2186is_traced (Coro::State coro) 3221is_traced (Coro::State coro)
… …
2204 OUTPUT: 3239 OUTPUT:
2205 RETVAL 3240 RETVAL
2206 3241
2207void 3242void
2208force_cctx () 3243force_cctx ()
3244 PROTOTYPE:
2209 CODE: 3245 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 3246 cctx_current->idle_sp = 0;
2212 3247
2213void 3248void
2214swap_defsv (Coro::State self) 3249swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 3250 PROTOTYPE: $
2216 ALIAS: 3251 ALIAS:
2217 swap_defav = 1 3252 swap_defav = 1
2218 CODE: 3253 CODE:
2219 if (!self->slot) 3254 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 3255 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 3256 else
2222 { 3257 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3258 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3259 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 3260
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 3261 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 3262 }
2228 3263
3264void
3265cancel (Coro::State self)
3266 CODE:
3267 coro_state_destroy (aTHX_ self);
3268 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3269
3270
2229MODULE = Coro::State PACKAGE = Coro 3271MODULE = Coro::State PACKAGE = Coro
2230 3272
2231BOOT: 3273BOOT:
2232{ 3274{
2233 int i;
2234
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3275 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3276 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 3277 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3278 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3279 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2240 SvREADONLY_on (coro_current); 3280 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3281 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3282 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3283 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3284
3285 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3286 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3287 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3288 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2241 3289
2242 coro_stash = gv_stashpv ("Coro", TRUE); 3290 coro_stash = gv_stashpv ("Coro", TRUE);
2243 3291
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3292 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2245 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3293 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2246 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3294 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2247 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3295 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2248 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3296 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2249 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3297 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2250
2251 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2252 coro_ready[i] = newAV ();
2253 3298
2254 { 3299 {
2255 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3300 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2256 3301
2257 coroapi.schedule = api_schedule; 3302 coroapi.schedule = api_schedule;
3303 coroapi.schedule_to = api_schedule_to;
2258 coroapi.cede = api_cede; 3304 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 3305 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 3306 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 3307 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 3308 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 3309 coroapi.current = coro_current;
2264 3310
2265 GCoroAPI = &coroapi; 3311 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 3312 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 3313 SvREADONLY_on (sv);
2268 } 3314 }
2269} 3315}
3316
3317void
3318terminate (...)
3319 CODE:
3320 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3321
3322void
3323schedule (...)
3324 CODE:
3325 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3326
3327void
3328schedule_to (...)
3329 CODE:
3330 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3331
3332void
3333cede_to (...)
3334 CODE:
3335 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3336
3337void
3338cede (...)
3339 CODE:
3340 CORO_EXECUTE_SLF_XS (slf_init_cede);
3341
3342void
3343cede_notself (...)
3344 CODE:
3345 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2270 3346
2271void 3347void
2272_set_current (SV *current) 3348_set_current (SV *current)
2273 PROTOTYPE: $ 3349 PROTOTYPE: $
2274 CODE: 3350 CODE:
… …
2277 3353
2278void 3354void
2279_set_readyhook (SV *hook) 3355_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 3356 PROTOTYPE: $
2281 CODE: 3357 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 3358 SvREFCNT_dec (coro_readyhook);
3359 SvGETMAGIC (hook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3360 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 3361
2287int 3362int
2288prio (Coro::State coro, int newprio = 0) 3363prio (Coro::State coro, int newprio = 0)
3364 PROTOTYPE: $;$
2289 ALIAS: 3365 ALIAS:
2290 nice = 1 3366 nice = 1
2291 CODE: 3367 CODE:
2292{ 3368{
2293 RETVAL = coro->prio; 3369 RETVAL = coro->prio;
… …
2295 if (items > 1) 3371 if (items > 1)
2296 { 3372 {
2297 if (ix) 3373 if (ix)
2298 newprio = coro->prio - newprio; 3374 newprio = coro->prio - newprio;
2299 3375
2300 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3376 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2301 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3377 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2302 3378
2303 coro->prio = newprio; 3379 coro->prio = newprio;
2304 } 3380 }
2305} 3381}
2306 OUTPUT: 3382 OUTPUT:
… …
2308 3384
2309SV * 3385SV *
2310ready (SV *self) 3386ready (SV *self)
2311 PROTOTYPE: $ 3387 PROTOTYPE: $
2312 CODE: 3388 CODE:
2313 RETVAL = boolSV (api_ready (self)); 3389 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 3390 OUTPUT:
2315 RETVAL 3391 RETVAL
2316 3392
2317int 3393int
2318nready (...) 3394nready (...)
… …
2320 CODE: 3396 CODE:
2321 RETVAL = coro_nready; 3397 RETVAL = coro_nready;
2322 OUTPUT: 3398 OUTPUT:
2323 RETVAL 3399 RETVAL
2324 3400
2325# for async_pool speedup
2326void 3401void
2327_pool_1 (SV *cb) 3402suspend (Coro::State self)
3403 PROTOTYPE: $
2328 CODE: 3404 CODE:
2329{ 3405 self->flags |= CF_SUSPENDED;
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current);
2332 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av;
2335 int i, len;
2336 3406
2337 if (!invoke) 3407void
3408resume (Coro::State self)
3409 PROTOTYPE: $
3410 CODE:
3411 self->flags &= ~CF_SUSPENDED;
3412
3413void
3414_pool_handler (...)
3415 CODE:
3416 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3417
3418void
3419async_pool (SV *cv, ...)
3420 PROTOTYPE: &@
3421 PPCODE:
3422{
3423 HV *hv = (HV *)av_pop (av_async_pool);
3424 AV *av = newAV ();
3425 SV *cb = ST (0);
3426 int i;
3427
3428 av_extend (av, items - 2);
3429 for (i = 1; i < items; ++i)
3430 av_push (av, SvREFCNT_inc_NN (ST (i)));
3431
3432 if ((SV *)hv == &PL_sv_undef)
2338 { 3433 {
2339 SV *old = PL_diehook; 3434 PUSHMARK (SP);
2340 PL_diehook = 0; 3435 EXTEND (SP, 2);
2341 SvREFCNT_dec (old); 3436 PUSHs (sv_Coro);
2342 croak ("\3async_pool terminate\2\n"); 3437 PUSHs ((SV *)cv_pool_handler);
3438 PUTBACK;
3439 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3440 SPAGAIN;
3441
3442 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2343 } 3443 }
2344 3444
2345 SvREFCNT_dec (coro->saved_deffh);
2346 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2347
2348 hv_store (hv, "desc", sizeof ("desc") - 1,
2349 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2350
2351 invoke_av = (AV *)SvRV (invoke);
2352 len = av_len (invoke_av);
2353
2354 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2355
2356 if (len > 0)
2357 { 3445 {
2358 av_fill (defav, len - 1); 3446 struct coro *coro = SvSTATE_hv (hv);
2359 for (i = 0; i < len; ++i) 3447
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3448 assert (!coro->invoke_cb);
3449 assert (!coro->invoke_av);
3450 coro->invoke_cb = SvREFCNT_inc (cb);
3451 coro->invoke_av = av;
2361 } 3452 }
2362 3453
3454 api_ready (aTHX_ (SV *)hv);
3455
3456 if (GIMME_V != G_VOID)
3457 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3458 else
2363 SvREFCNT_dec (invoke); 3459 SvREFCNT_dec (hv);
2364} 3460}
2365 3461
2366void 3462SV *
2367_pool_2 (SV *cb) 3463rouse_cb ()
3464 PROTOTYPE:
2368 CODE: 3465 CODE:
2369{ 3466 RETVAL = coro_new_rouse_cb (aTHX);
2370 struct coro *coro = SvSTATE (coro_current);
2371
2372 sv_setsv (cb, &PL_sv_undef);
2373
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0;
2376
2377 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2378 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2379 {
2380 SV *old = PL_diehook;
2381 PL_diehook = 0;
2382 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n");
2384 }
2385
2386 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389
2390 coro->prio = 0;
2391
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0);
2394
2395 av_push (av_async_pool, newSVsv (coro_current));
2396}
2397
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV *
2409gensub (SV *sub, ...)
2410 PROTOTYPE: &;@
2411 CODE:
2412{
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 3467 OUTPUT:
2442 RETVAL 3468 RETVAL
2443 3469
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 3470void
2450_get_state (SV *self) 3471rouse_wait (...)
3472 PROTOTYPE: ;$
2451 PPCODE: 3473 PPCODE:
2452{ 3474 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465
2466 av_extend (av, AvFILLp (defav) + 1 + 1);
2467
2468 for (i = 0; i <= AvFILLp (defav); ++i)
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2470
2471 av_push (av, data_sv);
2472
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2474
2475 api_ready (self);
2476}
2477 3475
2478void 3476void
2479_set_state (SV *state) 3477on_enter (SV *block)
3478 ALIAS:
3479 on_leave = 1
2480 PROTOTYPE: $ 3480 PROTOTYPE: &
3481 CODE:
3482{
3483 struct coro *coro = SvSTATE_current;
3484 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3485
3486 block = (SV *)coro_sv_2cv (aTHX_ block);
3487
3488 if (!*avp)
3489 *avp = newAV ();
3490
3491 av_push (*avp, SvREFCNT_inc (block));
3492
3493 if (!ix)
3494 on_enterleave_call (aTHX_ block);
3495
3496 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3497 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3498 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3499}
3500
3501
3502MODULE = Coro::State PACKAGE = PerlIO::cede
3503
3504BOOT:
3505 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3506
3507
3508MODULE = Coro::State PACKAGE = Coro::Semaphore
3509
3510SV *
3511new (SV *klass, SV *count = 0)
3512 CODE:
3513{
3514 int semcnt = 1;
3515
3516 if (count)
3517 {
3518 SvGETMAGIC (count);
3519
3520 if (SvOK (count))
3521 semcnt = SvIV (count);
3522 }
3523
3524 RETVAL = sv_bless (
3525 coro_waitarray_new (aTHX_ semcnt),
3526 GvSTASH (CvGV (cv))
3527 );
3528}
3529 OUTPUT:
3530 RETVAL
3531
3532# helper for Coro::Channel and others
3533SV *
3534_alloc (int count)
3535 CODE:
3536 RETVAL = coro_waitarray_new (aTHX_ count);
3537 OUTPUT:
3538 RETVAL
3539
3540SV *
3541count (SV *self)
3542 CODE:
3543 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3544 OUTPUT:
3545 RETVAL
3546
3547void
3548up (SV *self, int adjust = 1)
3549 ALIAS:
3550 adjust = 1
3551 CODE:
3552 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3553
3554void
3555down (...)
3556 CODE:
3557 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3558
3559void
3560wait (...)
3561 CODE:
3562 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3563
3564void
3565try (SV *self)
3566 PPCODE:
3567{
3568 AV *av = (AV *)SvRV (self);
3569 SV *count_sv = AvARRAY (av)[0];
3570 IV count = SvIVX (count_sv);
3571
3572 if (count > 0)
3573 {
3574 --count;
3575 SvIVX (count_sv) = count;
3576 XSRETURN_YES;
3577 }
3578 else
3579 XSRETURN_NO;
3580}
3581
3582void
3583waiters (SV *self)
3584 PPCODE:
3585{
3586 AV *av = (AV *)SvRV (self);
3587 int wcount = AvFILLp (av) + 1 - 1;
3588
3589 if (GIMME_V == G_SCALAR)
3590 XPUSHs (sv_2mortal (newSViv (wcount)));
3591 else
3592 {
3593 int i;
3594 EXTEND (SP, wcount);
3595 for (i = 1; i <= wcount; ++i)
3596 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3597 }
3598}
3599
3600MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3601
3602void
3603_may_delete (SV *sem, int count, int extra_refs)
2481 PPCODE: 3604 PPCODE:
2482{ 3605{
2483 AV *av = (AV *)SvRV (state); 3606 AV *av = (AV *)SvRV (sem);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2485 int i;
2486 3607
2487 errno = data->errorno; 3608 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2488 PL_laststype = data->laststype; 3609 && AvFILLp (av) == 0 /* no waiters, just count */
2489 PL_laststatval = data->laststatval; 3610 && SvIV (AvARRAY (av)[0]) == count)
2490 PL_statcache = data->statcache; 3611 XSRETURN_YES;
2491 3612
3613 XSRETURN_NO;
3614}
3615
3616MODULE = Coro::State PACKAGE = Coro::Signal
3617
3618SV *
3619new (SV *klass)
3620 CODE:
3621 RETVAL = sv_bless (
3622 coro_waitarray_new (aTHX_ 0),
3623 GvSTASH (CvGV (cv))
3624 );
3625 OUTPUT:
3626 RETVAL
3627
3628void
3629wait (...)
3630 CODE:
3631 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3632
3633void
3634broadcast (SV *self)
3635 CODE:
3636{
3637 AV *av = (AV *)SvRV (self);
3638 coro_signal_wake (aTHX_ av, AvFILLp (av));
3639}
3640
3641void
3642send (SV *self)
3643 CODE:
3644{
3645 AV *av = (AV *)SvRV (self);
3646
2492 EXTEND (SP, AvFILLp (av)); 3647 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 3648 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3649 else
3650 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 3651}
3652
3653IV
3654awaited (SV *self)
3655 CODE:
3656 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3657 OUTPUT:
3658 RETVAL
2496 3659
2497 3660
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 3661MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 3662
2500BOOT: 3663BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3664 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 3665
2503SV * 3666void
2504_schedule (...) 3667_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 3668 CODE:
2507{ 3669{
2508 static int incede; 3670 static int incede;
2509 3671
2510 api_cede_notself (); 3672 api_cede_notself (aTHX);
2511 3673
2512 ++incede; 3674 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 3675 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 3676 ;
2515 3677
2516 sv_setsv (sv_activity, &PL_sv_undef); 3678 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 3679 if (coro_nready >= incede)
2518 { 3680 {
2519 PUSHMARK (SP); 3681 PUSHMARK (SP);
2520 PUTBACK; 3682 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3683 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 3684 }
2524 3685
2525 --incede; 3686 --incede;
2526} 3687}
2527 3688
2528 3689
2529MODULE = Coro::State PACKAGE = PerlIO::cede 3690MODULE = Coro::State PACKAGE = Coro::AIO
2530 3691
2531BOOT: 3692void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3693_register (char *target, char *proto, SV *req)
3694 CODE:
3695{
3696 CV *req_cv = coro_sv_2cv (aTHX_ req);
3697 /* newXSproto doesn't return the CV on 5.8 */
3698 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3699 sv_setpv ((SV *)slf_cv, proto);
3700 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3701}
2533 3702

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