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Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 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 somtimes 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 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 806}
734 807
735/** coroutine stack handling ************************************************/ 808/** coroutine stack handling ************************************************/
736 809
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 810static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
746#endif 819#endif
747 820
748/* 821/*
749 * This overrides the default magic get method of %SIG elements. 822 * This overrides the default magic get method of %SIG elements.
750 * 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
751 * 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
752 * readback here. 825 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 826 */
757static int 827static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 828coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 829{
760 const char *s = MgPV_nolen_const (mg); 830 const char *s = MgPV_nolen_const (mg);
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 883 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 884
815 if (svp) 885 if (svp)
816 { 886 {
817 SV *old = *svp; 887 SV *old = *svp;
818 *svp = newSVsv (sv); 888 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 889 SvREFCNT_dec (old);
820 return 0; 890 return 0;
821 } 891 }
822 } 892 }
823 893
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 894 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 895}
826 896
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 919coro_setup (pTHX_ struct coro *coro)
829{ 920{
830 /* 921 /*
831 * emulate part of the perl startup here. 922 * emulate part of the perl startup here.
832 */ 923 */
… …
834 925
835 PL_runops = RUNOPS_DEFAULT; 926 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 927 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 928 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 929 PL_comppad = 0;
930 PL_comppad_name = 0;
931 PL_comppad_name_fill = 0;
932 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 933 PL_curpm = 0;
840 PL_curpad = 0; 934 PL_curpad = 0;
841 PL_localizing = 0; 935 PL_localizing = 0;
842 PL_dirty = 0; 936 PL_dirty = 0;
843 PL_restartop = 0; 937 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 938#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 939 PL_parser = 0;
846#endif 940#endif
941 PL_hints = 0;
847 942
848 /* recreate the die/warn hooks */ 943 /* recreate the die/warn hooks */
849 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 );
850 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);
851 946
852 GvSV (PL_defgv) = newSV (0); 947 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 948 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 949 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 952 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 953 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 954
859 { 955 {
860 dSP; 956 dSP;
861 UNOP myop; 957 UNOP myop;
862 958
863 Zero (&myop, 1, UNOP); 959 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 960 myop.op_next = Nullop;
961 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 962 myop.op_flags = OPf_WANT_VOID;
866 963
867 PUSHMARK (SP); 964 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 965 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 966 PUTBACK;
870 PL_op = (OP *)&myop; 967 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 968 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 969 }
874 970
875 /* 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
876 * 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.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 973 */
879 SSL_HEAD; 974 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880} 975 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881 976
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
882static void 989static void
883coro_destruct (pTHX_ struct coro *coro) 990coro_unwind_stacks (pTHX)
884{ 991{
885 if (!IN_DESTRUCT) 992 if (!IN_DESTRUCT)
886 { 993 {
887 /* restore all saved variables and stuff */ 994 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 995 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 1003 POPSTACK_TO (PL_mainstack);
897 1004
898 /* unwind main stack */ 1005 /* unwind main stack */
899 dounwind (-1); 1006 dounwind (-1);
900 } 1007 }
1008}
901 1009
902 SvREFCNT_dec (GvSV (PL_defgv)); 1010static void
903 SvREFCNT_dec (GvAV (PL_defgv)); 1011coro_destruct_perl (pTHX_ struct coro *coro)
904 SvREFCNT_dec (GvSV (PL_errgv)); 1012{
905 SvREFCNT_dec (PL_defoutgv); 1013 SV *svf [9];
906 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv));
908 1014
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911 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
912 SvREFCNT_dec (coro->saved_deffh); 1047 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1048 SvREFCNT_dec (coro->rouse_cb);
914 1049 SvREFCNT_dec (coro->invoke_cb);
915 coro_destruct_stacks (aTHX); 1050 SvREFCNT_dec (coro->invoke_av);
1051 }
916} 1052}
917 1053
918INLINE void 1054INLINE void
919free_coro_mortal (pTHX) 1055free_coro_mortal (pTHX)
920{ 1056{
… …
928static int 1064static int
929runops_trace (pTHX) 1065runops_trace (pTHX)
930{ 1066{
931 COP *oldcop = 0; 1067 COP *oldcop = 0;
932 int oldcxix = -2; 1068 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1069
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1070 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1071 {
938 PERL_ASYNC_CHECK (); 1072 PERL_ASYNC_CHECK ();
939 1073
940 if (cctx->flags & CC_TRACE_ALL) 1074 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1075 {
942 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)
943 { 1077 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1078 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1079 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1080 AV *av = newAV (); /* return values */
947 SV **cb; 1081 SV **cb;
… …
984 1118
985 if (PL_curcop != &PL_compiling) 1119 if (PL_curcop != &PL_compiling)
986 { 1120 {
987 SV **cb; 1121 SV **cb;
988 1122
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1123 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1124 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1125 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1126
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1127 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1128 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1129 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1130 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1131 SV *fullname = sv_2mortal (newSV (0));
999 1132
1000 if (isGV (gv)) 1133 if (isGV (gv))
… …
1005 SAVETMPS; 1138 SAVETMPS;
1006 EXTEND (SP, 3); 1139 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1140 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1141 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1142 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1144 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1147 SPAGAIN;
1015 FREETMPS; 1148 FREETMPS;
… …
1018 } 1151 }
1019 1152
1020 oldcxix = cxstack_ix; 1153 oldcxix = cxstack_ix;
1021 } 1154 }
1022 1155
1023 if (cctx->flags & CC_TRACE_LINE) 1156 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1157 {
1025 dSP; 1158 dSP;
1026 1159
1027 PL_runops = RUNOPS_DEFAULT; 1160 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1161 ENTER;
… …
1047 1180
1048 TAINT_NOT; 1181 TAINT_NOT;
1049 return 0; 1182 return 0;
1050} 1183}
1051 1184
1185static struct CoroSLF cctx_ssl_frame;
1186
1052static void 1187static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1188slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1189{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1190 ta->prev = 0;
1057} 1191}
1058 1192
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1193static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1194slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1195{
1062/* 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 */
1063static void NOINLINE 1202static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1203cctx_prepare (pTHX)
1065{ 1204{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1205 PL_top_env = &PL_start_env;
1070 1206
1071 if (cctx->flags & CC_TRACE) 1207 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1208 PL_runops = runops_trace;
1073 1209
1074 Zero (&myop, 1, UNOP); 1210 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1211 * that can lead to creation of a new cctx */
1076 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));
1077 1214
1078 PUSHMARK (SP); 1215 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1216 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1217
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1218 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1219 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1220}
1087 1221
1088/* 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 */
1089INLINE void 1223INLINE void
1090transfer_tail (pTHX) 1224transfer_tail (pTHX)
1091{ 1225{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1226 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107} 1227}
1108 1228
1109/* 1229/*
1110 * this is a _very_ stripped down perl interpreter ;) 1230 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1231 */
… …
1118# endif 1238# endif
1119#endif 1239#endif
1120 { 1240 {
1121 dTHX; 1241 dTHX;
1122 1242
1123 /* we are the alternative tail to pp_set_stacklevel */ 1243 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1244 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1245 /* PL_nop = PL_nop->op_next */
1129 1246
1130 /* inject a fake subroutine call to cctx_init */ 1247 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1248 cctx_prepare (aTHX);
1132 1249
1133 /* cctx_run is the alternative tail of transfer() */ 1250 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1251 transfer_tail (aTHX);
1135 1252
1136 /* 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 */
1137 PL_restartop = PL_op; 1254 PL_restartop = PL_op;
1138 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 */
1139 1260
1140 /* 1261 /*
1141 * 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
1142 * 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)
1143 * 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
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1265 * bootstrap-time "top" top_env, as we cannot restore the "main"
1145 * 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.
1146 */ 1269 */
1147 PL_top_env = main_top_env; 1270 PL_top_env = main_top_env;
1148 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 */
1149 } 1272 }
1150} 1273}
… …
1227cctx_destroy (coro_cctx *cctx) 1350cctx_destroy (coro_cctx *cctx)
1228{ 1351{
1229 if (!cctx) 1352 if (!cctx)
1230 return; 1353 return;
1231 1354
1355 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1356
1232 --cctx_count; 1357 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1358 coro_destroy (&cctx->cctx);
1234 1359
1235 /* coro_transfer creates new, empty cctx's */ 1360 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1361 if (cctx->sptr)
… …
1294/** coroutine switching *****************************************************/ 1419/** coroutine switching *****************************************************/
1295 1420
1296static void 1421static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1422transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1423{
1424 /* TODO: throwing up here is considered harmful */
1425
1299 if (expect_true (prev != next)) 1426 if (expect_true (prev != next))
1300 { 1427 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1428 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 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,");
1303 1430
1304 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1306
1307 if (expect_false (next->flags & CF_DESTROYED)) 1431 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1308 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,");
1309 1433
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1434#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1435 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 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,");
1313#endif 1437#endif
1314 } 1438 }
1315} 1439}
1316 1440
1317/* always use the TRANSFER macro */ 1441/* always use the TRANSFER macro */
1318static void NOINLINE 1442static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1443transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1444{
1321 dSTACKLEVEL; 1445 dSTACKLEVEL;
1322 1446
1323 /* sometimes transfer is only called to set idle_sp */ 1447 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1448 if (expect_false (!prev))
1325 { 1449 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1450 cctx_current->idle_sp = STACKLEVEL;
1327 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 */
1328 } 1452 }
1329 else if (expect_true (prev != next)) 1453 else if (expect_true (prev != next))
1330 { 1454 {
1331 coro_cctx *prev__cctx; 1455 coro_cctx *cctx_prev;
1332 1456
1333 if (expect_false (prev->flags & CF_NEW)) 1457 if (expect_false (prev->flags & CF_NEW))
1334 { 1458 {
1335 /* create a new empty/source context */ 1459 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1460 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1461 prev->flags |= CF_RUNNING;
1339 } 1462 }
1340 1463
1341 prev->flags &= ~CF_RUNNING; 1464 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1465 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1466
1346 /* first get rid of the old state */ 1467 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1468 save_perl (aTHX_ prev);
1348 1469
1349 if (expect_false (next->flags & CF_NEW)) 1470 if (expect_false (next->flags & CF_NEW))
… …
1354 coro_setup (aTHX_ next); 1475 coro_setup (aTHX_ next);
1355 } 1476 }
1356 else 1477 else
1357 load_perl (aTHX_ next); 1478 load_perl (aTHX_ next);
1358 1479
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1480 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1481 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1482 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1483 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1484 && !force_cctx
1366 )) 1485 ))
1367 { 1486 {
1368 /* 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 */
1369 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));
1370 1489
1371 prev->cctx = 0;
1372
1373 /* 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. */
1374 /* 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 */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1492 if (expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1493 if (expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1494 next->cctx = cctx_get (aTHX);
1378 1495
1379 cctx_put (prev__cctx); 1496 cctx_put (cctx_current);
1380 } 1497 }
1498 else
1499 prev->cctx = cctx_current;
1381 1500
1382 ++next->usecount; 1501 ++next->usecount;
1383 1502
1384 if (expect_true (!next->cctx)) 1503 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1504 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1505
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1506 next->cctx = 0;
1388 transfer_next = next;
1389 1507
1390 if (expect_false (prev__cctx != next->cctx)) 1508 if (expect_false (cctx_prev != cctx_current))
1391 { 1509 {
1392 prev__cctx->top_env = PL_top_env; 1510 cctx_prev->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1511 PL_top_env = cctx_current->top_env;
1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1512 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1395 } 1513 }
1396 1514
1397 transfer_tail (aTHX); 1515 transfer_tail (aTHX);
1398 } 1516 }
1399} 1517}
… …
1406static int 1524static int
1407coro_state_destroy (pTHX_ struct coro *coro) 1525coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1526{
1409 if (coro->flags & CF_DESTROYED) 1527 if (coro->flags & CF_DESTROYED)
1410 return 0; 1528 return 0;
1529
1530 if (coro->on_destroy && !PL_dirty)
1531 coro->on_destroy (aTHX_ coro);
1411 1532
1412 coro->flags |= CF_DESTROYED; 1533 coro->flags |= CF_DESTROYED;
1413 1534
1414 if (coro->flags & CF_READY) 1535 if (coro->flags & CF_READY)
1415 { 1536 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1537 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1538 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1539 --coro_nready;
1420 UNLOCK;
1421 } 1540 }
1422 else 1541 else
1423 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 */
1424 1543
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1544 if (coro->mainstack
1426 { 1545 && coro->mainstack != main_mainstack
1427 struct coro temp; 1546 && coro->slot
1428 1547 && !PL_dirty)
1429 if (coro->flags & CF_RUNNING)
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431
1432 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro);
1434
1435 coro_destruct (aTHX_ coro); 1548 coro_destruct_perl (aTHX_ coro);
1436
1437 load_perl (aTHX_ &temp);
1438
1439 coro->slot = 0;
1440 }
1441 1549
1442 cctx_destroy (coro->cctx); 1550 cctx_destroy (coro->cctx);
1551 SvREFCNT_dec (coro->startcv);
1443 SvREFCNT_dec (coro->args); 1552 SvREFCNT_dec (coro->args);
1553 SvREFCNT_dec (CORO_THROW);
1444 1554
1445 if (coro->next) coro->next->prev = coro->prev; 1555 if (coro->next) coro->next->prev = coro->prev;
1446 if (coro->prev) coro->prev->next = coro->next; 1556 if (coro->prev) coro->prev->next = coro->next;
1447 if (coro == coro_first) coro_first = coro->next; 1557 if (coro == coro_first) coro_first = coro->next;
1448 1558
… …
1486# define MGf_DUP 0 1596# define MGf_DUP 0
1487#endif 1597#endif
1488}; 1598};
1489 1599
1490static void 1600static void
1491prepare_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)
1492{ 1602{
1493 ta->prev = SvSTATE (prev_sv); 1603 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1604 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1605 TRANSFER_CHECK (*ta);
1496} 1606}
1497 1607
1498static void 1608static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1609api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1610{
1501 dTHX;
1502 struct transfer_args ta; 1611 struct coro_transfer_args ta;
1503 1612
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1613 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1614 TRANSFER (ta, 1);
1506} 1615}
1507 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
1508/** Coro ********************************************************************/ 1640/** Coro ********************************************************************/
1509 1641
1510static void 1642INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1643coro_enq (pTHX_ struct coro *coro)
1512{ 1644{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1514}
1515 1646
1516static 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 *
1517coro_deq (pTHX) 1655coro_deq (pTHX)
1518{ 1656{
1519 int prio; 1657 int prio;
1520 1658
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1522 if (AvFILLp (coro_ready [prio]) >= 0) 1660 {
1523 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 }
1524 1670
1525 return 0; 1671 return 0;
1526} 1672}
1527 1673
1528static int 1674static int
1529api_ready (SV *coro_sv) 1675api_ready (pTHX_ SV *coro_sv)
1530{ 1676{
1531 dTHX;
1532 struct coro *coro; 1677 struct coro *coro;
1533 SV *sv_hook; 1678 SV *sv_hook;
1534 void (*xs_hook)(void); 1679 void (*xs_hook)(void);
1535 1680
1536 if (SvROK (coro_sv))
1537 coro_sv = SvRV (coro_sv);
1538
1539 coro = SvSTATE (coro_sv); 1681 coro = SvSTATE (coro_sv);
1540 1682
1541 if (coro->flags & CF_READY) 1683 if (coro->flags & CF_READY)
1542 return 0; 1684 return 0;
1543 1685
1544 coro->flags |= CF_READY; 1686 coro->flags |= CF_READY;
1545 1687
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1688 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1689 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1690
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1691 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1692 ++coro_nready;
1553 1693
1554 UNLOCK;
1555
1556 if (sv_hook) 1694 if (sv_hook)
1557 { 1695 {
1558 dSP; 1696 dSP;
1559 1697
1560 ENTER; 1698 ENTER;
1561 SAVETMPS; 1699 SAVETMPS;
1562 1700
1563 PUSHMARK (SP); 1701 PUSHMARK (SP);
1564 PUTBACK; 1702 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD); 1703 call_sv (sv_hook, G_VOID | G_DISCARD);
1566 SPAGAIN;
1567 1704
1568 FREETMPS; 1705 FREETMPS;
1569 LEAVE; 1706 LEAVE;
1570 } 1707 }
1571 1708
… …
1574 1711
1575 return 1; 1712 return 1;
1576} 1713}
1577 1714
1578static int 1715static int
1579api_is_ready (SV *coro_sv) 1716api_is_ready (pTHX_ SV *coro_sv)
1580{ 1717{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1718 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1719}
1585 1720
1721/* expects to own a reference to next->hv */
1586INLINE void 1722INLINE void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1723prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1588{ 1724{
1589 SV *prev_sv, *next_sv;
1590
1591 for (;;)
1592 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX);
1595
1596 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv))
1598 {
1599 dSP;
1600 UNLOCK;
1601
1602 ENTER;
1603 SAVETMPS;
1604
1605 PUSHMARK (SP);
1606 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1608 SPAGAIN;
1609
1610 FREETMPS;
1611 LEAVE;
1612 continue;
1613 }
1614
1615 ta->next = SvSTATE (next_sv);
1616
1617 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */
1623 continue;
1624 }
1625
1626 --coro_nready;
1627 UNLOCK;
1628 break;
1629 }
1630
1631 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1725 SV *prev_sv = SvRV (coro_current);
1726
1633 ta->prev = SvSTATE (prev_sv); 1727 ta->prev = SvSTATE_hv (prev_sv);
1728 ta->next = next;
1729
1634 TRANSFER_CHECK (*ta); 1730 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1731
1636 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1732 SvRV_set (coro_current, (SV *)next->hv);
1638 1733
1639 LOCK;
1640 free_coro_mortal (aTHX); 1734 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1735 coro_mortal = prev_sv;
1642 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 }
1643} 1785}
1644 1786
1645INLINE void 1787INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1788prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1789{
1648 api_ready (coro_current); 1790 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1791 prepare_schedule (aTHX_ ta);
1650} 1792}
1651 1793
1794INLINE void
1795prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1796{
1797 SV *prev = SvRV (coro_current);
1798
1799 if (coro_nready)
1800 {
1801 prepare_schedule (aTHX_ ta);
1802 api_ready (aTHX_ prev);
1803 }
1804 else
1805 prepare_nop (aTHX_ ta);
1806}
1807
1808static void
1809api_schedule (pTHX)
1810{
1811 struct coro_transfer_args ta;
1812
1813 prepare_schedule (aTHX_ &ta);
1814 TRANSFER (ta, 1);
1815}
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
1652static int 1827static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1828api_cede (pTHX)
1654{ 1829{
1655 if (coro_nready) 1830 struct coro_transfer_args ta;
1656 { 1831
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1832 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1833
1834 if (expect_true (ta.prev != ta.next))
1835 {
1836 TRANSFER (ta, 1);
1660 return 1; 1837 return 1;
1661 } 1838 }
1662 else 1839 else
1663 return 0; 1840 return 0;
1664} 1841}
1665 1842
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 1843static int
1677api_cede (void) 1844api_cede_notself (pTHX)
1678{ 1845{
1679 dTHX; 1846 if (coro_nready)
1847 {
1680 struct transfer_args ta; 1848 struct coro_transfer_args ta;
1681 1849
1682 prepare_cede (aTHX_ &ta); 1850 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1851 TRANSFER (ta, 1);
1687 return 1; 1852 return 1;
1688 } 1853 }
1689 else 1854 else
1690 return 0; 1855 return 0;
1691} 1856}
1692 1857
1693static int 1858static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 1859api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1860{
1711 dTHX;
1712 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");
1713 1865
1714 if (flags & CC_TRACE) 1866 if (flags & CC_TRACE)
1715 { 1867 {
1716 if (!coro->cctx) 1868 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1869 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1870 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1871 croak ("cannot enable tracing on coroutine with custom stack, caught");
1720 1872
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1873 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1874 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1875 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1876 {
… …
1729 else 1881 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1882 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1883 }
1732} 1884}
1733 1885
1734#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
1735static int 1946static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1737{ 1948{
1738 AV *padlist; 1949 HV *hv = (HV *)SvRV (coro_current);
1739 AV *av = (AV *)mg->mg_obj; 1950 struct coro *coro = (struct coro *)frame->data;
1740 1951
1741 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 }
1742 2076
1743 return 0; 2077 return 0;
1744} 2078}
1745 2079
1746static MGVTBL coro_gensub_vtbl = { 2080static void
1747 0, 0, 0, 0, 2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 2082{
1749}; 2083 SV *cb;
1750#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}
1751 2418
1752/*****************************************************************************/ 2419/*****************************************************************************/
1753/* PerlIO::cede */ 2420/* PerlIO::cede */
1754 2421
1755typedef struct 2422typedef struct
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2450 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2451 double now = nvtime ();
1785 2452
1786 if (now >= self->next) 2453 if (now >= self->next)
1787 { 2454 {
1788 api_cede (); 2455 api_cede (aTHX);
1789 self->next = now + self->every; 2456 self->next = now + self->every;
1790 } 2457 }
1791 2458
1792 return PerlIOBuf_flush (aTHX_ f); 2459 return PerlIOBuf_flush (aTHX_ f);
1793} 2460}
… …
1823 PerlIOBuf_get_cnt, 2490 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2491 PerlIOBuf_set_ptrcnt,
1825}; 2492};
1826 2493
1827/*****************************************************************************/ 2494/*****************************************************************************/
2495/* Coro::Semaphore & Coro::Signal */
1828 2496
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP * 2497static SV *
1839pp_restore (pTHX) 2498coro_waitarray_new (pTHX_ int count)
1840{ 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 {
1841 dSP; 2831 dSP;
2832 int i;
1842 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
1843 PUSHMARK (SP); 2882 PUSHMARK (SP);
1844 2883
1845 EXTEND (SP, 3); 2884 /* first push all args to the stack */
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2885 EXTEND (SP, items + 1);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 2886
1850 RETURNOP (ssl_restore.op_first); 2887 for (i = 0; i < items; ++i)
1851} 2888 PUSHs (arg [i]);
1852 2889
1853/* declare prototype */ 2890 /* now push the callback closure */
1854XS(XS_Coro__State__set_stacklevel); 2891 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1855 2892
1856static OP * 2893 /* now call the AIO function - we assume our request is uncancelable */
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863
1864 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED))
1873 {
1874 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1;
1878 }
1879
1880 PUTBACK; 2894 PUTBACK;
1881 switch (PL_op->op_private & 7) 2895 call_sv ((SV *)req, G_VOID | G_DISCARD);
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 } 2896 }
1908 2897
1909 TRANSFER (ta, 0); 2898 /* now that the requets is going, we loop toll we have a result */
1910 SPAGAIN; 2899 frame->data = (void *)state;
1911 2900 frame->prepare = prepare_schedule;
1912skip: 2901 frame->check = slf_check_aio_req;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 2902}
2903
2904static void
2905coro_aio_req_xs (pTHX_ CV *cv)
2906{
2907 dXSARGS;
2908
2909 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2910
2911 XSRETURN_EMPTY;
2912}
2913
2914/*****************************************************************************/
2915
2916#if CORO_CLONE
2917# include "clone.c"
2918#endif
1918 2919
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2920MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2921
1921PROTOTYPES: DISABLE 2922PROTOTYPES: DISABLE
1922 2923
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 2924BOOT:
1955{ 2925{
1956#ifdef USE_ITHREADS 2926#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2927# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2928 coro_thx = PERL_GET_CONTEXT;
1960# endif 2929# endif
1961#endif 2930#endif
1962 BOOT_PAGESIZE; 2931 BOOT_PAGESIZE;
1963 2932
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 2933 cctx_current = cctx_new_empty ();
1965 2934
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2935 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2936 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2937
1969 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;
… …
1985 main_top_env = PL_top_env; 2954 main_top_env = PL_top_env;
1986 2955
1987 while (main_top_env->je_prev) 2956 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2957 main_top_env = main_top_env->je_prev;
1989 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
1990 coroapi.ver = CORO_API_VERSION; 2969 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2970 coroapi.rev = CORO_API_REVISION;
2971
1992 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;
1993 2980
1994 { 2981 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2982 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2983
1997 if (!svp) croak ("Time::HiRes is required"); 2984 if (!svp) croak ("Time::HiRes is required");
1998 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2985 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1999 2986
2000 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2987 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2001 } 2988 }
2002 2989
2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2990 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2004} 2991}
2005 2992
2006SV * 2993SV *
2007new (char *klass, ...) 2994new (char *klass, ...)
2995 ALIAS:
2996 Coro::new = 1
2008 CODE: 2997 CODE:
2009{ 2998{
2010 struct coro *coro; 2999 struct coro *coro;
2011 MAGIC *mg; 3000 MAGIC *mg;
2012 HV *hv; 3001 HV *hv;
3002 CV *cb;
2013 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 }
2014 3018
2015 Newz (0, coro, 1, struct coro); 3019 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV (); 3020 coro->args = newAV ();
2017 coro->flags = CF_NEW; 3021 coro->flags = CF_NEW;
2018 3022
… …
2023 coro->hv = hv = newHV (); 3027 coro->hv = hv = newHV ();
2024 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);
2025 mg->mg_flags |= MGf_DUP; 3029 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3030 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027 3031
3032 if (items > 1)
3033 {
2028 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
2029 for (i = 1; i < items; i++) 3044 for (i = 2; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 3045 av_push (coro->args, newSVsv (ST (i)));
3046 }
2031} 3047}
2032 OUTPUT: 3048 OUTPUT:
2033 RETVAL 3049 RETVAL
3050
3051void
3052transfer (...)
3053 PROTOTYPE: $$
3054 CODE:
3055 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 3056
2035bool 3057bool
2036_destroy (SV *coro_sv) 3058_destroy (SV *coro_sv)
2037 CODE: 3059 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3060 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2043_exit (int code) 3065_exit (int code)
2044 PROTOTYPE: $ 3066 PROTOTYPE: $
2045 CODE: 3067 CODE:
2046 _exit (code); 3068 _exit (code);
2047 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
2048int 3089int
2049cctx_stacksize (int new_stacksize = 0) 3090cctx_stacksize (int new_stacksize = 0)
3091 PROTOTYPE: ;$
2050 CODE: 3092 CODE:
2051 RETVAL = cctx_stacksize; 3093 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 3094 if (new_stacksize)
2053 { 3095 {
2054 cctx_stacksize = new_stacksize; 3096 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 3099 OUTPUT:
2058 RETVAL 3100 RETVAL
2059 3101
2060int 3102int
2061cctx_max_idle (int max_idle = 0) 3103cctx_max_idle (int max_idle = 0)
3104 PROTOTYPE: ;$
2062 CODE: 3105 CODE:
2063 RETVAL = cctx_max_idle; 3106 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 3107 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 3108 cctx_max_idle = max_idle;
2066 OUTPUT: 3109 OUTPUT:
2067 RETVAL 3110 RETVAL
2068 3111
2069int 3112int
2070cctx_count () 3113cctx_count ()
3114 PROTOTYPE:
2071 CODE: 3115 CODE:
2072 RETVAL = cctx_count; 3116 RETVAL = cctx_count;
2073 OUTPUT: 3117 OUTPUT:
2074 RETVAL 3118 RETVAL
2075 3119
2076int 3120int
2077cctx_idle () 3121cctx_idle ()
3122 PROTOTYPE:
2078 CODE: 3123 CODE:
2079 RETVAL = cctx_idle; 3124 RETVAL = cctx_idle;
2080 OUTPUT: 3125 OUTPUT:
2081 RETVAL 3126 RETVAL
2082 3127
2083void 3128void
2084list () 3129list ()
3130 PROTOTYPE:
2085 PPCODE: 3131 PPCODE:
2086{ 3132{
2087 struct coro *coro; 3133 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 3134 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 3135 if (coro->hv)
… …
2096 eval = 1 3142 eval = 1
2097 CODE: 3143 CODE:
2098{ 3144{
2099 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3145 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2100 { 3146 {
2101 struct coro temp; 3147 struct coro *current = SvSTATE_current;
2102 3148
2103 if (!(coro->flags & CF_RUNNING)) 3149 if (current != coro)
2104 { 3150 {
2105 PUTBACK; 3151 PUTBACK;
2106 save_perl (aTHX_ &temp); 3152 save_perl (aTHX_ current);
2107 load_perl (aTHX_ coro); 3153 load_perl (aTHX_ coro);
3154 SPAGAIN;
2108 } 3155 }
2109 3156
2110 {
2111 dSP;
2112 ENTER;
2113 SAVETMPS;
2114 PUTBACK;
2115 PUSHSTACK; 3157 PUSHSTACK;
3158
2116 PUSHMARK (SP); 3159 PUSHMARK (SP);
3160 PUTBACK;
2117 3161
2118 if (ix) 3162 if (ix)
2119 eval_sv (coderef, 0); 3163 eval_sv (coderef, 0);
2120 else 3164 else
2121 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3165 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2122 3166
2123 POPSTACK; 3167 POPSTACK;
2124 SPAGAIN; 3168 SPAGAIN;
2125 FREETMPS;
2126 LEAVE;
2127 PUTBACK;
2128 }
2129 3169
2130 if (!(coro->flags & CF_RUNNING)) 3170 if (current != coro)
2131 { 3171 {
3172 PUTBACK;
2132 save_perl (aTHX_ coro); 3173 save_perl (aTHX_ coro);
2133 load_perl (aTHX_ &temp); 3174 load_perl (aTHX_ current);
2134 SPAGAIN; 3175 SPAGAIN;
2135 } 3176 }
2136 } 3177 }
2137} 3178}
2138 3179
… …
2142 ALIAS: 3183 ALIAS:
2143 is_ready = CF_READY 3184 is_ready = CF_READY
2144 is_running = CF_RUNNING 3185 is_running = CF_RUNNING
2145 is_new = CF_NEW 3186 is_new = CF_NEW
2146 is_destroyed = CF_DESTROYED 3187 is_destroyed = CF_DESTROYED
3188 is_suspended = CF_SUSPENDED
2147 CODE: 3189 CODE:
2148 RETVAL = boolSV (coro->flags & ix); 3190 RETVAL = boolSV (coro->flags & ix);
2149 OUTPUT: 3191 OUTPUT:
2150 RETVAL 3192 RETVAL
2151 3193
2152void 3194void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 3195throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 3196 PROTOTYPE: $;$
2155 CODE: 3197 CODE:
3198{
3199 struct coro *current = SvSTATE_current;
3200 SV **throwp = self == current ? &CORO_THROW : &self->except;
2156 SvREFCNT_dec (self->throw); 3201 SvREFCNT_dec (*throwp);
3202 SvGETMAGIC (throw);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3203 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3204}
2158 3205
2159void 3206void
2160api_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
2161 3210
2162SV * 3211SV *
2163has_cctx (Coro::State coro) 3212has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 3213 PROTOTYPE: $
2165 CODE: 3214 CODE:
2166 RETVAL = boolSV (!!coro->cctx); 3215 /* maybe manage the running flag differently */
3216 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2167 OUTPUT: 3217 OUTPUT:
2168 RETVAL 3218 RETVAL
2169 3219
2170int 3220int
2171is_traced (Coro::State coro) 3221is_traced (Coro::State coro)
… …
2189 OUTPUT: 3239 OUTPUT:
2190 RETVAL 3240 RETVAL
2191 3241
2192void 3242void
2193force_cctx () 3243force_cctx ()
3244 PROTOTYPE:
2194 CODE: 3245 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 3246 cctx_current->idle_sp = 0;
2197 3247
2198void 3248void
2199swap_defsv (Coro::State self) 3249swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 3250 PROTOTYPE: $
2201 ALIAS: 3251 ALIAS:
2202 swap_defav = 1 3252 swap_defav = 1
2203 CODE: 3253 CODE:
2204 if (!self->slot) 3254 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 3255 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 3256 else
2207 { 3257 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3258 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3259 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 3260
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 3261 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 3262 }
2213 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
2214MODULE = Coro::State PACKAGE = Coro 3271MODULE = Coro::State PACKAGE = Coro
2215 3272
2216BOOT: 3273BOOT:
2217{ 3274{
2218 int i;
2219
2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3275 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3276 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2223 3277 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3278 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3279 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2225 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);
2226 3289
2227 coro_stash = gv_stashpv ("Coro", TRUE); 3290 coro_stash = gv_stashpv ("Coro", TRUE);
2228 3291
2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3292 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3293 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2231 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3294 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2232 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3295 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2233 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3296 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2234 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3297 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2235
2236 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2237 coro_ready[i] = newAV ();
2238 3298
2239 { 3299 {
2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3300 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2241 3301
2242 coroapi.schedule = api_schedule; 3302 coroapi.schedule = api_schedule;
3303 coroapi.schedule_to = api_schedule_to;
2243 coroapi.cede = api_cede; 3304 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 3305 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 3306 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 3307 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 3308 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 3309 coroapi.current = coro_current;
2249 3310
2250 GCoroAPI = &coroapi; 3311 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 3312 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 3313 SvREADONLY_on (sv);
2253 } 3314 }
2254} 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);
2255 3346
2256void 3347void
2257_set_current (SV *current) 3348_set_current (SV *current)
2258 PROTOTYPE: $ 3349 PROTOTYPE: $
2259 CODE: 3350 CODE:
… …
2262 3353
2263void 3354void
2264_set_readyhook (SV *hook) 3355_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 3356 PROTOTYPE: $
2266 CODE: 3357 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 3358 SvREFCNT_dec (coro_readyhook);
3359 SvGETMAGIC (hook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3360 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 3361
2272int 3362int
2273prio (Coro::State coro, int newprio = 0) 3363prio (Coro::State coro, int newprio = 0)
3364 PROTOTYPE: $;$
2274 ALIAS: 3365 ALIAS:
2275 nice = 1 3366 nice = 1
2276 CODE: 3367 CODE:
2277{ 3368{
2278 RETVAL = coro->prio; 3369 RETVAL = coro->prio;
… …
2280 if (items > 1) 3371 if (items > 1)
2281 { 3372 {
2282 if (ix) 3373 if (ix)
2283 newprio = coro->prio - newprio; 3374 newprio = coro->prio - newprio;
2284 3375
2285 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3376 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2286 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3377 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2287 3378
2288 coro->prio = newprio; 3379 coro->prio = newprio;
2289 } 3380 }
2290} 3381}
2291 OUTPUT: 3382 OUTPUT:
… …
2293 3384
2294SV * 3385SV *
2295ready (SV *self) 3386ready (SV *self)
2296 PROTOTYPE: $ 3387 PROTOTYPE: $
2297 CODE: 3388 CODE:
2298 RETVAL = boolSV (api_ready (self)); 3389 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 3390 OUTPUT:
2300 RETVAL 3391 RETVAL
2301 3392
2302int 3393int
2303nready (...) 3394nready (...)
… …
2305 CODE: 3396 CODE:
2306 RETVAL = coro_nready; 3397 RETVAL = coro_nready;
2307 OUTPUT: 3398 OUTPUT:
2308 RETVAL 3399 RETVAL
2309 3400
2310# for async_pool speedup
2311void 3401void
2312_pool_1 (SV *cb) 3402suspend (Coro::State self)
3403 PROTOTYPE: $
2313 CODE: 3404 CODE:
2314{ 3405 self->flags |= CF_SUSPENDED;
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current);
2317 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av;
2320 int i, len;
2321 3406
2322 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)
2323 { 3433 {
2324 SV *old = PL_diehook; 3434 PUSHMARK (SP);
2325 PL_diehook = 0; 3435 EXTEND (SP, 2);
2326 SvREFCNT_dec (old); 3436 PUSHs (sv_Coro);
2327 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));
2328 } 3443 }
2329 3444
2330 SvREFCNT_dec (coro->saved_deffh);
2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2332
2333 hv_store (hv, "desc", sizeof ("desc") - 1,
2334 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2335
2336 invoke_av = (AV *)SvRV (invoke);
2337 len = av_len (invoke_av);
2338
2339 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2340
2341 if (len > 0)
2342 { 3445 {
2343 av_fill (defav, len - 1); 3446 struct coro *coro = SvSTATE_hv (hv);
2344 for (i = 0; i < len; ++i) 3447
2345 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;
2346 } 3452 }
2347 3453
3454 api_ready (aTHX_ (SV *)hv);
3455
3456 if (GIMME_V != G_VOID)
3457 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3458 else
2348 SvREFCNT_dec (invoke); 3459 SvREFCNT_dec (hv);
2349} 3460}
2350 3461
2351void 3462SV *
2352_pool_2 (SV *cb) 3463rouse_cb ()
3464 PROTOTYPE:
2353 CODE: 3465 CODE:
2354{ 3466 RETVAL = coro_new_rouse_cb (aTHX);
2355 struct coro *coro = SvSTATE (coro_current);
2356
2357 sv_setsv (cb, &PL_sv_undef);
2358
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0;
2361
2362 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2363 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2364 {
2365 SV *old = PL_diehook;
2366 PL_diehook = 0;
2367 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n");
2369 }
2370
2371 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374
2375 coro->prio = 0;
2376
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0);
2379
2380 av_push (av_async_pool, newSVsv (coro_current));
2381}
2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT: 3467 OUTPUT:
2427 RETVAL 3468 RETVAL
2428 3469
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 3470void
2435_get_state (SV *self) 3471rouse_wait (...)
3472 PROTOTYPE: ;$
2436 PPCODE: 3473 PPCODE:
2437{ 3474 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2438 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV ();
2440 int i;
2441 SV *data_sv = newSV (sizeof (struct io_state));
2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2443 SvCUR_set (data_sv, sizeof (struct io_state));
2444 SvPOK_only (data_sv);
2445
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450
2451 av_extend (av, AvFILLp (defav) + 1 + 1);
2452
2453 for (i = 0; i <= AvFILLp (defav); ++i)
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2455
2456 av_push (av, data_sv);
2457
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2459
2460 api_ready (self);
2461}
2462 3475
2463void 3476void
2464_set_state (SV *state) 3477on_enter (SV *block)
3478 ALIAS:
3479 on_leave = 1
2465 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)
2466 PPCODE: 3604 PPCODE:
2467{ 3605{
2468 AV *av = (AV *)SvRV (state); 3606 AV *av = (AV *)SvRV (sem);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2470 int i;
2471 3607
2472 errno = data->errorno; 3608 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2473 PL_laststype = data->laststype; 3609 && AvFILLp (av) == 0 /* no waiters, just count */
2474 PL_laststatval = data->laststatval; 3610 && SvIV (AvARRAY (av)[0]) == count)
2475 PL_statcache = data->statcache; 3611 XSRETURN_YES;
2476 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
2477 EXTEND (SP, AvFILLp (av)); 3647 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 3648 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3649 else
3650 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 3651}
3652
3653IV
3654awaited (SV *self)
3655 CODE:
3656 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3657 OUTPUT:
3658 RETVAL
2481 3659
2482 3660
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 3661MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 3662
2485BOOT: 3663BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3664 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 3665
2488SV * 3666void
2489_schedule (...) 3667_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 3668 CODE:
2492{ 3669{
2493 static int incede; 3670 static int incede;
2494 3671
2495 api_cede_notself (); 3672 api_cede_notself (aTHX);
2496 3673
2497 ++incede; 3674 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 3675 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 3676 ;
2500 3677
2501 sv_setsv (sv_activity, &PL_sv_undef); 3678 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 3679 if (coro_nready >= incede)
2503 { 3680 {
2504 PUSHMARK (SP); 3681 PUSHMARK (SP);
2505 PUTBACK; 3682 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3683 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 3684 }
2509 3685
2510 --incede; 3686 --incede;
2511} 3687}
2512 3688
2513 3689
2514MODULE = Coro::State PACKAGE = PerlIO::cede 3690MODULE = Coro::State PACKAGE = Coro::AIO
2515 3691
2516BOOT: 3692void
2517 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}
2518 3702

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