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Comparing Coro/Coro/State.xs (file contents):
Revision 1.254 by root, Fri Nov 7 20:27:47 2008 UTC vs.
Revision 1.346 by root, Tue Jun 9 18:56:45 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
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#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
103 109
104/* 5.8.7 */ 110/* 5.8.7 */
105#ifndef SvRV_set 111#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 113#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 126#endif
121 127
122/* 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
123 * 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
124#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
133#else 144#else
134# define attribute(x) 145# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
137#endif 148#endif
138 149
139#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147static perl_mutex coro_lock; 159# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) 160static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 161# endif
154 162#endif
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164 163
165static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
166 169
167static U32 cctx_gen; 170static U32 cctx_gen;
168static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
169static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
170static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
171static JMPENV *main_top_env; 174static JMPENV *main_top_env;
172static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
175static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook; 184static SV *rv_diehook;
178static SV *rv_warnhook; 185static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
180 187
181/* async_pool helper stuff */ 188/* async_pool helper stuff */
182static SV *sv_pool_rss; 189static SV *sv_pool_rss;
183static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
184static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
185 196
186/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
187static SV *sv_activity; 198static SV *sv_activity;
188 199
189static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
197 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
198 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
199}; 210};
200 211
201/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
202typedef struct coro_cctx { 213typedef struct coro_cctx
214{
203 struct coro_cctx *next; 215 struct coro_cctx *next;
204 216
205 /* the stack */ 217 /* the stack */
206 void *sptr; 218 void *sptr;
207 size_t ssize; 219 size_t ssize;
… …
217 int valgrind_id; 229 int valgrind_id;
218#endif 230#endif
219 unsigned char flags; 231 unsigned char flags;
220} coro_cctx; 232} coro_cctx;
221 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
222enum { 238enum {
223 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
224 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
225 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
226 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
227}; 244};
228 245
229/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
230typedef struct { 247typedef struct
248{
231 SV *defsv; 249 SV *defsv;
232 AV *defav; 250 AV *defav;
233 SV *errsv; 251 SV *errsv;
234 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
235#define VAR(name,type) type name; 254#define VAR(name,type) type name;
236# include "state.h" 255# include "state.h"
237#undef VAR 256#undef VAR
238} perl_slots; 257} perl_slots;
239 258
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 259#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 260
242/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
243struct coro { 262struct coro {
244 /* the c coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 264 coro_cctx *cctx;
246 265
247 /* process data */ 266 /* state data */
267 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 268 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 269 perl_slots *slot; /* basically the saved sp */
250 270
271 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 272 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 273 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 274 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 275 HV *hv; /* the perl hash associated with this coro, if any */
276 void (*on_destroy)(pTHX_ struct coro *coro);
255 277
256 /* statistics */ 278 /* statistics */
257 int usecount; /* number of transfers to this coro */ 279 int usecount; /* number of transfers to this coro */
258 280
259 /* coro process data */ 281 /* coro process data */
260 int prio; 282 int prio;
261 SV *throw; /* exception to be thrown */ 283 SV *except; /* exception to be thrown */
284 SV *rouse_cb;
262 285
263 /* async_pool */ 286 /* async_pool */
264 SV *saved_deffh; 287 SV *saved_deffh;
288 SV *invoke_cb;
289 AV *invoke_av;
290
291 /* on_enter/on_leave */
292 AV *on_enter;
293 AV *on_leave;
265 294
266 /* linked list */ 295 /* linked list */
267 struct coro *next, *prev; 296 struct coro *next, *prev;
268}; 297};
269 298
270typedef struct coro *Coro__State; 299typedef struct coro *Coro__State;
271typedef struct coro *Coro__State_or_hashref; 300typedef struct coro *Coro__State_or_hashref;
301
302/* the following variables are effectively part of the perl context */
303/* and get copied between struct coro and these variables */
304/* the mainr easonw e don't support windows process emulation */
305static struct CoroSLF slf_frame; /* the current slf frame */
272 306
273/** Coro ********************************************************************/ 307/** Coro ********************************************************************/
274 308
275#define PRIO_MAX 3 309#define PRIO_MAX 3
276#define PRIO_HIGH 1 310#define PRIO_HIGH 1
… …
280#define PRIO_MIN -4 314#define PRIO_MIN -4
281 315
282/* for Coro.pm */ 316/* for Coro.pm */
283static SV *coro_current; 317static SV *coro_current;
284static SV *coro_readyhook; 318static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 319static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
286static int coro_nready; 320static CV *cv_coro_run, *cv_coro_terminate;
287static struct coro *coro_first; 321static struct coro *coro_first;
322#define coro_nready coroapi.nready
288 323
289/** lowlevel stuff **********************************************************/ 324/** lowlevel stuff **********************************************************/
290 325
291static SV * 326static SV *
292coro_get_sv (pTHX_ const char *name, int create) 327coro_get_sv (pTHX_ const char *name, int create)
… …
316 get_hv (name, create); 351 get_hv (name, create);
317#endif 352#endif
318 return get_hv (name, create); 353 return get_hv (name, create);
319} 354}
320 355
356/* may croak */
357INLINE CV *
358coro_sv_2cv (pTHX_ SV *sv)
359{
360 HV *st;
361 GV *gvp;
362 CV *cv = sv_2cv (sv, &st, &gvp, 0);
363
364 if (!cv)
365 croak ("code reference expected");
366
367 return cv;
368}
369
370/*****************************************************************************/
371/* magic glue */
372
373#define CORO_MAGIC_type_cv 26
374#define CORO_MAGIC_type_state PERL_MAGIC_ext
375
376#define CORO_MAGIC_NN(sv, type) \
377 (expect_true (SvMAGIC (sv)->mg_type == type) \
378 ? SvMAGIC (sv) \
379 : mg_find (sv, type))
380
381#define CORO_MAGIC(sv, type) \
382 (expect_true (SvMAGIC (sv)) \
383 ? CORO_MAGIC_NN (sv, type) \
384 : 0)
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
388
389INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414
415/* faster than SvSTATE, but expects a coroutine hv */
416#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
417#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418
419/*****************************************************************************/
420/* padlist management and caching */
421
321static AV * 422static AV *
322coro_clone_padlist (pTHX_ CV *cv) 423coro_derive_padlist (pTHX_ CV *cv)
323{ 424{
324 AV *padlist = CvPADLIST (cv); 425 AV *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 426 AV *newpadlist, *newpad;
326 427
327 newpadlist = newAV (); 428 newpadlist = newAV ();
… …
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 433 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 434#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 435 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist); 436 --AvFILLp (padlist);
336 437
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 438 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
338 av_store (newpadlist, 1, (SV *)newpad); 439 av_store (newpadlist, 1, (SV *)newpad);
339 440
340 return newpadlist; 441 return newpadlist;
341} 442}
342 443
343static void 444static void
344free_padlist (pTHX_ AV *padlist) 445free_padlist (pTHX_ AV *padlist)
345{ 446{
346 /* may be during global destruction */ 447 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 448 if (!IN_DESTRUCT)
348 { 449 {
349 I32 i = AvFILLp (padlist); 450 I32 i = AvFILLp (padlist);
350 while (i >= 0) 451
452 while (i > 0) /* special-case index 0 */
351 { 453 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 454 /* we try to be extra-careful here */
353 if (svp) 455 AV *av = (AV *)AvARRAY (padlist)[i--];
354 { 456 I32 j = AvFILLp (av);
355 SV *sv; 457
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 458 while (j >= 0)
459 SvREFCNT_dec (AvARRAY (av)[j--]);
460
461 AvFILLp (av) = -1;
357 SvREFCNT_dec (sv); 462 SvREFCNT_dec (av);
358
359 SvREFCNT_dec (*svp);
360 }
361 } 463 }
362 464
465 SvREFCNT_dec (AvARRAY (padlist)[0]);
466
467 AvFILLp (padlist) = -1;
363 SvREFCNT_dec ((SV*)padlist); 468 SvREFCNT_dec ((SV*)padlist);
364 } 469 }
365} 470}
366 471
367static int 472static int
… …
376 481
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 482 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 483
379 return 0; 484 return 0;
380} 485}
381
382#define CORO_MAGIC_type_cv PERL_MAGIC_ext
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 486
385static MGVTBL coro_cv_vtbl = { 487static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 488 0, 0, 0, 0,
387 coro_cv_free 489 coro_cv_free
388}; 490};
389
390#define CORO_MAGIC(sv, type) \
391 SvMAGIC (sv) \
392 ? SvMAGIC (sv)->mg_type == type \
393 ? SvMAGIC (sv) \
394 : mg_find (sv, type) \
395 : 0
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
399
400static struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425 491
426/* the next two functions merely cache the padlists */ 492/* the next two functions merely cache the padlists */
427static void 493static void
428get_padlist (pTHX_ CV *cv) 494get_padlist (pTHX_ CV *cv)
429{ 495{
… …
435 else 501 else
436 { 502 {
437#if CORO_PREFER_PERL_FUNCTIONS 503#if CORO_PREFER_PERL_FUNCTIONS
438 /* this is probably cleaner? but also slower! */ 504 /* this is probably cleaner? but also slower! */
439 /* in practise, it seems to be less stable */ 505 /* in practise, it seems to be less stable */
440 CV *cp = Perl_cv_clone (cv); 506 CV *cp = Perl_cv_clone (aTHX_ cv);
441 CvPADLIST (cv) = CvPADLIST (cp); 507 CvPADLIST (cv) = CvPADLIST (cp);
442 CvPADLIST (cp) = 0; 508 CvPADLIST (cp) = 0;
443 SvREFCNT_dec (cp); 509 SvREFCNT_dec (cp);
444#else 510#else
445 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 511 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
446#endif 512#endif
447 } 513 }
448} 514}
449 515
450static void 516static void
… …
457 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 523 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
458 524
459 av = (AV *)mg->mg_obj; 525 av = (AV *)mg->mg_obj;
460 526
461 if (expect_false (AvFILLp (av) >= AvMAX (av))) 527 if (expect_false (AvFILLp (av) >= AvMAX (av)))
462 av_extend (av, AvMAX (av) + 1); 528 av_extend (av, AvFILLp (av) + 1);
463 529
464 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 530 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
465} 531}
466 532
467/** load & save, init *******************************************************/ 533/** load & save, init *******************************************************/
534
535static void
536on_enterleave_call (pTHX_ SV *cb);
468 537
469static void 538static void
470load_perl (pTHX_ Coro__State c) 539load_perl (pTHX_ Coro__State c)
471{ 540{
472 perl_slots *slot = c->slot; 541 perl_slots *slot = c->slot;
473 c->slot = 0; 542 c->slot = 0;
474 543
475 PL_mainstack = c->mainstack; 544 PL_mainstack = c->mainstack;
476 545
477 GvSV (PL_defgv) = slot->defsv; 546 GvSV (PL_defgv) = slot->defsv;
478 GvAV (PL_defgv) = slot->defav; 547 GvAV (PL_defgv) = slot->defav;
479 GvSV (PL_errgv) = slot->errsv; 548 GvSV (PL_errgv) = slot->errsv;
480 GvSV (irsgv) = slot->irsgv; 549 GvSV (irsgv) = slot->irsgv;
550 GvHV (PL_hintgv) = slot->hinthv;
481 551
482 #define VAR(name,type) PL_ ## name = slot->name; 552 #define VAR(name,type) PL_ ## name = slot->name;
483 # include "state.h" 553 # include "state.h"
484 #undef VAR 554 #undef VAR
485 555
… …
496 CvPADLIST (cv) = (AV *)POPs; 566 CvPADLIST (cv) = (AV *)POPs;
497 } 567 }
498 568
499 PUTBACK; 569 PUTBACK;
500 } 570 }
571
572 slf_frame = c->slf_frame;
573 CORO_THROW = c->except;
574
575 if (expect_false (c->on_enter))
576 {
577 int i;
578
579 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
580 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
581 }
501} 582}
502 583
503static void 584static void
504save_perl (pTHX_ Coro__State c) 585save_perl (pTHX_ Coro__State c)
505{ 586{
587 if (expect_false (c->on_leave))
588 {
589 int i;
590
591 for (i = AvFILLp (c->on_leave); i >= 0; --i)
592 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
593 }
594
595 c->except = CORO_THROW;
596 c->slf_frame = slf_frame;
597
506 { 598 {
507 dSP; 599 dSP;
508 I32 cxix = cxstack_ix; 600 I32 cxix = cxstack_ix;
509 PERL_CONTEXT *ccstk = cxstack; 601 PERL_CONTEXT *ccstk = cxstack;
510 PERL_SI *top_si = PL_curstackinfo; 602 PERL_SI *top_si = PL_curstackinfo;
… …
565 c->mainstack = PL_mainstack; 657 c->mainstack = PL_mainstack;
566 658
567 { 659 {
568 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 660 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
569 661
570 slot->defav = GvAV (PL_defgv); 662 slot->defav = GvAV (PL_defgv);
571 slot->defsv = DEFSV; 663 slot->defsv = DEFSV;
572 slot->errsv = ERRSV; 664 slot->errsv = ERRSV;
573 slot->irsgv = GvSV (irsgv); 665 slot->irsgv = GvSV (irsgv);
666 slot->hinthv = GvHV (PL_hintgv);
574 667
575 #define VAR(name,type) slot->name = PL_ ## name; 668 #define VAR(name,type) slot->name = PL_ ## name;
576 # include "state.h" 669 # include "state.h"
577 #undef VAR 670 #undef VAR
578 } 671 }
579} 672}
580 673
581/* 674/*
582 * allocate various perl stacks. This is an exact copy 675 * allocate various perl stacks. This is almost an exact copy
583 * of perl.c:init_stacks, except that it uses less memory 676 * of perl.c:init_stacks, except that it uses less memory
584 * on the (sometimes correct) assumption that coroutines do 677 * on the (sometimes correct) assumption that coroutines do
585 * not usually need a lot of stackspace. 678 * not usually need a lot of stackspace.
586 */ 679 */
587#if CORO_PREFER_PERL_FUNCTIONS 680#if CORO_PREFER_PERL_FUNCTIONS
588# define coro_init_stacks init_stacks 681# define coro_init_stacks(thx) init_stacks ()
589#else 682#else
590static void 683static void
591coro_init_stacks (pTHX) 684coro_init_stacks (pTHX)
592{ 685{
593 PL_curstackinfo = new_stackinfo(32, 8); 686 PL_curstackinfo = new_stackinfo(32, 8);
… …
656#if !PERL_VERSION_ATLEAST (5,10,0) 749#if !PERL_VERSION_ATLEAST (5,10,0)
657 Safefree (PL_retstack); 750 Safefree (PL_retstack);
658#endif 751#endif
659} 752}
660 753
754#define CORO_RSS \
755 rss += sizeof (SYM (curstackinfo)); \
756 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
757 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
758 rss += SYM (tmps_max) * sizeof (SV *); \
759 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
760 rss += SYM (scopestack_max) * sizeof (I32); \
761 rss += SYM (savestack_max) * sizeof (ANY);
762
661static size_t 763static size_t
662coro_rss (pTHX_ struct coro *coro) 764coro_rss (pTHX_ struct coro *coro)
663{ 765{
664 size_t rss = sizeof (*coro); 766 size_t rss = sizeof (*coro);
665 767
666 if (coro->mainstack) 768 if (coro->mainstack)
667 { 769 {
668 perl_slots tmp_slot;
669 perl_slots *slot;
670
671 if (coro->flags & CF_RUNNING) 770 if (coro->flags & CF_RUNNING)
672 { 771 {
673 slot = &tmp_slot; 772 #define SYM(sym) PL_ ## sym
674 773 CORO_RSS;
675 #define VAR(name,type) slot->name = PL_ ## name;
676 # include "state.h"
677 #undef VAR 774 #undef SYM
678 } 775 }
679 else 776 else
680 slot = coro->slot;
681
682 if (slot)
683 { 777 {
684 rss += sizeof (slot->curstackinfo); 778 #define SYM(sym) coro->slot->sym
685 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 779 CORO_RSS;
686 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 780 #undef SYM
687 rss += slot->tmps_max * sizeof (SV *);
688 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
689 rss += slot->scopestack_max * sizeof (I32);
690 rss += slot->savestack_max * sizeof (ANY);
691
692#if !PERL_VERSION_ATLEAST (5,10,0)
693 rss += slot->retstack_max * sizeof (OP *);
694#endif
695 } 781 }
696 } 782 }
697 783
698 return rss; 784 return rss;
699} 785}
… …
712#endif 798#endif
713 799
714/* 800/*
715 * This overrides the default magic get method of %SIG elements. 801 * This overrides the default magic get method of %SIG elements.
716 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 802 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
717 * and instead of tryign to save and restore the hash elements, we just provide 803 * and instead of trying to save and restore the hash elements, we just provide
718 * readback here. 804 * readback here.
719 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
720 * not expecting this to actually change the hook. This is a potential problem
721 * when a schedule happens then, but we ignore this.
722 */ 805 */
723static int 806static int
724coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 807coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
725{ 808{
726 const char *s = MgPV_nolen_const (mg); 809 const char *s = MgPV_nolen_const (mg);
… …
779 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 862 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
780 863
781 if (svp) 864 if (svp)
782 { 865 {
783 SV *old = *svp; 866 SV *old = *svp;
784 *svp = newSVsv (sv); 867 *svp = SvOK (sv) ? newSVsv (sv) : 0;
785 SvREFCNT_dec (old); 868 SvREFCNT_dec (old);
786 return 0; 869 return 0;
787 } 870 }
788 } 871 }
789 872
790 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 873 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
791} 874}
792 875
793static void 876static void
877prepare_nop (pTHX_ struct coro_transfer_args *ta)
878{
879 /* kind of mega-hacky, but works */
880 ta->next = ta->prev = (struct coro *)ta;
881}
882
883static int
884slf_check_nop (pTHX_ struct CoroSLF *frame)
885{
886 return 0;
887}
888
889static int
890slf_check_repeat (pTHX_ struct CoroSLF *frame)
891{
892 return 1;
893}
894
895static UNOP coro_setup_op;
896
897static void NOINLINE /* noinline to keep it out of the transfer fast path */
794coro_setup (pTHX_ struct coro *coro) 898coro_setup (pTHX_ struct coro *coro)
795{ 899{
796 /* 900 /*
797 * emulate part of the perl startup here. 901 * emulate part of the perl startup here.
798 */ 902 */
… …
800 904
801 PL_runops = RUNOPS_DEFAULT; 905 PL_runops = RUNOPS_DEFAULT;
802 PL_curcop = &PL_compiling; 906 PL_curcop = &PL_compiling;
803 PL_in_eval = EVAL_NULL; 907 PL_in_eval = EVAL_NULL;
804 PL_comppad = 0; 908 PL_comppad = 0;
909 PL_comppad_name = 0;
910 PL_comppad_name_fill = 0;
911 PL_comppad_name_floor = 0;
805 PL_curpm = 0; 912 PL_curpm = 0;
806 PL_curpad = 0; 913 PL_curpad = 0;
807 PL_localizing = 0; 914 PL_localizing = 0;
808 PL_dirty = 0; 915 PL_dirty = 0;
809 PL_restartop = 0; 916 PL_restartop = 0;
810#if PERL_VERSION_ATLEAST (5,10,0) 917#if PERL_VERSION_ATLEAST (5,10,0)
811 PL_parser = 0; 918 PL_parser = 0;
812#endif 919#endif
920 PL_hints = 0;
813 921
814 /* recreate the die/warn hooks */ 922 /* recreate the die/warn hooks */
815 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 923 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
816 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 924 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
817 925
818 GvSV (PL_defgv) = newSV (0); 926 GvSV (PL_defgv) = newSV (0);
819 GvAV (PL_defgv) = coro->args; coro->args = 0; 927 GvAV (PL_defgv) = coro->args; coro->args = 0;
820 GvSV (PL_errgv) = newSV (0); 928 GvSV (PL_errgv) = newSV (0);
821 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 929 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
930 GvHV (PL_hintgv) = 0;
822 PL_rs = newSVsv (GvSV (irsgv)); 931 PL_rs = newSVsv (GvSV (irsgv));
823 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 932 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
824 933
825 { 934 {
826 dSP; 935 dSP;
827 LOGOP myop; 936 UNOP myop;
828 937
829 Zero (&myop, 1, LOGOP); 938 Zero (&myop, 1, UNOP);
830 myop.op_next = Nullop; 939 myop.op_next = Nullop;
940 myop.op_type = OP_ENTERSUB;
831 myop.op_flags = OPf_WANT_VOID; 941 myop.op_flags = OPf_WANT_VOID;
832 942
833 PUSHMARK (SP); 943 PUSHMARK (SP);
834 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 944 PUSHs ((SV *)coro->startcv);
835 PUTBACK; 945 PUTBACK;
836 PL_op = (OP *)&myop; 946 PL_op = (OP *)&myop;
837 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 947 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
838 SPAGAIN;
839 } 948 }
840 949
841 /* this newly created coroutine might be run on an existing cctx which most 950 /* this newly created coroutine might be run on an existing cctx which most
842 * likely was suspended in set_stacklevel, called from entersub. 951 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
843 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
844 * so we ENTER here for symmetry
845 */ 952 */
846 ENTER; 953 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
847} 954 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
848 955
956 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
957 coro_setup_op.op_next = PL_op;
958 coro_setup_op.op_type = OP_ENTERSUB;
959 coro_setup_op.op_ppaddr = pp_slf;
960 /* no flags etc. required, as an init function won't be called */
961
962 PL_op = (OP *)&coro_setup_op;
963
964 /* copy throw, in case it was set before coro_setup */
965 CORO_THROW = coro->except;
966}
967
849static void 968static void
850coro_destruct (pTHX_ struct coro *coro) 969coro_unwind_stacks (pTHX)
851{ 970{
852 if (!IN_DESTRUCT) 971 if (!IN_DESTRUCT)
853 { 972 {
854 /* restore all saved variables and stuff */ 973 /* restore all saved variables and stuff */
855 LEAVE_SCOPE (0); 974 LEAVE_SCOPE (0);
… …
863 POPSTACK_TO (PL_mainstack); 982 POPSTACK_TO (PL_mainstack);
864 983
865 /* unwind main stack */ 984 /* unwind main stack */
866 dounwind (-1); 985 dounwind (-1);
867 } 986 }
987}
988
989static void
990coro_destruct_perl (pTHX_ struct coro *coro)
991{
992 coro_unwind_stacks (aTHX);
868 993
869 SvREFCNT_dec (GvSV (PL_defgv)); 994 SvREFCNT_dec (GvSV (PL_defgv));
870 SvREFCNT_dec (GvAV (PL_defgv)); 995 SvREFCNT_dec (GvAV (PL_defgv));
871 SvREFCNT_dec (GvSV (PL_errgv)); 996 SvREFCNT_dec (GvSV (PL_errgv));
872 SvREFCNT_dec (PL_defoutgv); 997 SvREFCNT_dec (PL_defoutgv);
873 SvREFCNT_dec (PL_rs); 998 SvREFCNT_dec (PL_rs);
874 SvREFCNT_dec (GvSV (irsgv)); 999 SvREFCNT_dec (GvSV (irsgv));
1000 SvREFCNT_dec (GvHV (PL_hintgv));
875 1001
876 SvREFCNT_dec (PL_diehook); 1002 SvREFCNT_dec (PL_diehook);
877 SvREFCNT_dec (PL_warnhook); 1003 SvREFCNT_dec (PL_warnhook);
878 1004
879 SvREFCNT_dec (coro->saved_deffh); 1005 SvREFCNT_dec (coro->saved_deffh);
880 SvREFCNT_dec (coro->throw); 1006 SvREFCNT_dec (coro->rouse_cb);
1007 SvREFCNT_dec (coro->invoke_cb);
1008 SvREFCNT_dec (coro->invoke_av);
881 1009
882 coro_destruct_stacks (aTHX); 1010 coro_destruct_stacks (aTHX);
883} 1011}
884 1012
885static void 1013INLINE void
886free_coro_mortal (pTHX) 1014free_coro_mortal (pTHX)
887{ 1015{
888 if (expect_true (coro_mortal)) 1016 if (expect_true (coro_mortal))
889 { 1017 {
890 SvREFCNT_dec (coro_mortal); 1018 SvREFCNT_dec (coro_mortal);
… …
895static int 1023static int
896runops_trace (pTHX) 1024runops_trace (pTHX)
897{ 1025{
898 COP *oldcop = 0; 1026 COP *oldcop = 0;
899 int oldcxix = -2; 1027 int oldcxix = -2;
900 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
901 coro_cctx *cctx = coro->cctx;
902 1028
903 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1029 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
904 { 1030 {
905 PERL_ASYNC_CHECK (); 1031 PERL_ASYNC_CHECK ();
906 1032
907 if (cctx->flags & CC_TRACE_ALL) 1033 if (cctx_current->flags & CC_TRACE_ALL)
908 { 1034 {
909 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1035 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
910 { 1036 {
911 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1037 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
912 SV **bot, **top; 1038 SV **bot, **top;
913 AV *av = newAV (); /* return values */ 1039 AV *av = newAV (); /* return values */
914 SV **cb; 1040 SV **cb;
… …
951 1077
952 if (PL_curcop != &PL_compiling) 1078 if (PL_curcop != &PL_compiling)
953 { 1079 {
954 SV **cb; 1080 SV **cb;
955 1081
956 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1082 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
957 { 1083 {
958 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1084 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
959 1085
960 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1086 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
961 { 1087 {
962 runops_proc_t old_runops = PL_runops;
963 dSP; 1088 dSP;
964 GV *gv = CvGV (cx->blk_sub.cv); 1089 GV *gv = CvGV (cx->blk_sub.cv);
965 SV *fullname = sv_2mortal (newSV (0)); 1090 SV *fullname = sv_2mortal (newSV (0));
966 1091
967 if (isGV (gv)) 1092 if (isGV (gv))
… …
972 SAVETMPS; 1097 SAVETMPS;
973 EXTEND (SP, 3); 1098 EXTEND (SP, 3);
974 PUSHMARK (SP); 1099 PUSHMARK (SP);
975 PUSHs (&PL_sv_yes); 1100 PUSHs (&PL_sv_yes);
976 PUSHs (fullname); 1101 PUSHs (fullname);
977 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1102 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
978 PUTBACK; 1103 PUTBACK;
979 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1104 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
980 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1105 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
981 SPAGAIN; 1106 SPAGAIN;
982 FREETMPS; 1107 FREETMPS;
… …
985 } 1110 }
986 1111
987 oldcxix = cxstack_ix; 1112 oldcxix = cxstack_ix;
988 } 1113 }
989 1114
990 if (cctx->flags & CC_TRACE_LINE) 1115 if (cctx_current->flags & CC_TRACE_LINE)
991 { 1116 {
992 dSP; 1117 dSP;
993 1118
994 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
995 ENTER; 1120 ENTER;
… …
1014 1139
1015 TAINT_NOT; 1140 TAINT_NOT;
1016 return 0; 1141 return 0;
1017} 1142}
1018 1143
1019/* inject a fake call to Coro::State::_cctx_init into the execution */ 1144static struct CoroSLF cctx_ssl_frame;
1020/* _cctx_init should be careful, as it could be called at almost any time */ 1145
1021/* during execution of a perl program */ 1146static void
1147slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1148{
1149 ta->prev = 0;
1150}
1151
1152static int
1153slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1154{
1155 *frame = cctx_ssl_frame;
1156
1157 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1158}
1159
1160/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1022static void NOINLINE 1161static void NOINLINE
1023cctx_prepare (pTHX_ coro_cctx *cctx) 1162cctx_prepare (pTHX)
1024{ 1163{
1025 dSP;
1026 LOGOP myop;
1027
1028 PL_top_env = &PL_start_env; 1164 PL_top_env = &PL_start_env;
1029 1165
1030 if (cctx->flags & CC_TRACE) 1166 if (cctx_current->flags & CC_TRACE)
1031 PL_runops = runops_trace; 1167 PL_runops = runops_trace;
1032 1168
1033 Zero (&myop, 1, LOGOP); 1169 /* we already must be executing an SLF op, there is no other valid way
1034 myop.op_next = PL_op; 1170 * that can lead to creation of a new cctx */
1035 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1171 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1172 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1036 1173
1037 PUSHMARK (SP); 1174 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1038 EXTEND (SP, 2); 1175 cctx_ssl_frame = slf_frame;
1039 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1176
1040 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1177 slf_frame.prepare = slf_prepare_set_stacklevel;
1041 PUTBACK; 1178 slf_frame.check = slf_check_set_stacklevel;
1042 PL_op = (OP *)&myop; 1179}
1043 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1180
1044 SPAGAIN; 1181/* the tail of transfer: execute stuff we can only do after a transfer */
1182INLINE void
1183transfer_tail (pTHX)
1184{
1185 free_coro_mortal (aTHX);
1045} 1186}
1046 1187
1047/* 1188/*
1048 * this is a _very_ stripped down perl interpreter ;) 1189 * this is a _very_ stripped down perl interpreter ;)
1049 */ 1190 */
1050static void 1191static void
1051cctx_run (void *arg) 1192cctx_run (void *arg)
1052{ 1193{
1194#ifdef USE_ITHREADS
1195# if CORO_PTHREAD
1196 PERL_SET_CONTEXT (coro_thx);
1197# endif
1198#endif
1199 {
1053 dTHX; 1200 dTHX;
1054 1201
1055 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1202 /* normally we would need to skip the entersub here */
1056 UNLOCK; 1203 /* not doing so will re-execute it, which is exactly what we want */
1057
1058 /* we now skip the entersub that lead to transfer() */
1059 PL_op = PL_op->op_next; 1204 /* PL_nop = PL_nop->op_next */
1060 1205
1061 /* inject a fake subroutine call to cctx_init */ 1206 /* inject a fake subroutine call to cctx_init */
1062 cctx_prepare (aTHX_ (coro_cctx *)arg); 1207 cctx_prepare (aTHX);
1063 1208
1209 /* cctx_run is the alternative tail of transfer() */
1210 transfer_tail (aTHX);
1211
1064 /* somebody or something will hit me for both perl_run and PL_restartop */ 1212 /* somebody or something will hit me for both perl_run and PL_restartop */
1065 PL_restartop = PL_op; 1213 PL_restartop = PL_op;
1066 perl_run (PL_curinterp); 1214 perl_run (PL_curinterp);
1067
1068 /* 1215 /*
1216 * Unfortunately, there is no way to get at the return values of the
1217 * coro body here, as perl_run destroys these
1218 */
1219
1220 /*
1069 * If perl-run returns we assume exit() was being called or the coro 1221 * If perl-run returns we assume exit() was being called or the coro
1070 * fell off the end, which seems to be the only valid (non-bug) 1222 * fell off the end, which seems to be the only valid (non-bug)
1071 * reason for perl_run to return. We try to exit by jumping to the 1223 * reason for perl_run to return. We try to exit by jumping to the
1072 * bootstrap-time "top" top_env, as we cannot restore the "main" 1224 * bootstrap-time "top" top_env, as we cannot restore the "main"
1073 * coroutine as Coro has no such concept 1225 * coroutine as Coro has no such concept.
1226 * This actually isn't valid with the pthread backend, but OSes requiring
1227 * that backend are too broken to do it in a standards-compliant way.
1074 */ 1228 */
1075 PL_top_env = main_top_env; 1229 PL_top_env = main_top_env;
1076 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1230 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1231 }
1077} 1232}
1078 1233
1079static coro_cctx * 1234static coro_cctx *
1080cctx_new () 1235cctx_new ()
1081{ 1236{
1082 coro_cctx *cctx; 1237 coro_cctx *cctx;
1238
1239 ++cctx_count;
1240 New (0, cctx, 1, coro_cctx);
1241
1242 cctx->gen = cctx_gen;
1243 cctx->flags = 0;
1244 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1245
1246 return cctx;
1247}
1248
1249/* create a new cctx only suitable as source */
1250static coro_cctx *
1251cctx_new_empty ()
1252{
1253 coro_cctx *cctx = cctx_new ();
1254
1255 cctx->sptr = 0;
1256 coro_create (&cctx->cctx, 0, 0, 0, 0);
1257
1258 return cctx;
1259}
1260
1261/* create a new cctx suitable as destination/running a perl interpreter */
1262static coro_cctx *
1263cctx_new_run ()
1264{
1265 coro_cctx *cctx = cctx_new ();
1083 void *stack_start; 1266 void *stack_start;
1084 size_t stack_size; 1267 size_t stack_size;
1085
1086 ++cctx_count;
1087 Newz (0, cctx, 1, coro_cctx);
1088
1089 cctx->gen = cctx_gen;
1090 1268
1091#if HAVE_MMAP 1269#if HAVE_MMAP
1092 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1270 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1093 /* mmap supposedly does allocate-on-write for us */ 1271 /* mmap supposedly does allocate-on-write for us */
1094 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1272 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1095 1273
1096 if (cctx->sptr != (void *)-1) 1274 if (cctx->sptr != (void *)-1)
1097 { 1275 {
1098# if CORO_STACKGUARD 1276 #if CORO_STACKGUARD
1099 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1277 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1100# endif 1278 #endif
1101 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1279 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1102 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1280 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1103 cctx->flags |= CC_MAPPED; 1281 cctx->flags |= CC_MAPPED;
1104 } 1282 }
1105 else 1283 else
1106#endif 1284#endif
1107 { 1285 {
1108 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1286 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1109 New (0, cctx->sptr, cctx_stacksize, long); 1287 New (0, cctx->sptr, cctx_stacksize, long);
1110 1288
1111 if (!cctx->sptr) 1289 if (!cctx->sptr)
1112 { 1290 {
1113 perror ("FATAL: unable to allocate stack for coroutine"); 1291 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1114 _exit (EXIT_FAILURE); 1292 _exit (EXIT_FAILURE);
1115 } 1293 }
1116 1294
1117 stack_start = cctx->sptr; 1295 stack_start = cctx->sptr;
1118 stack_size = cctx->ssize; 1296 stack_size = cctx->ssize;
1119 } 1297 }
1120 1298
1121 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1299 #if CORO_USE_VALGRIND
1300 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1301 #endif
1302
1122 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1303 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1123 1304
1124 return cctx; 1305 return cctx;
1125} 1306}
1126 1307
… …
1128cctx_destroy (coro_cctx *cctx) 1309cctx_destroy (coro_cctx *cctx)
1129{ 1310{
1130 if (!cctx) 1311 if (!cctx)
1131 return; 1312 return;
1132 1313
1314 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1315
1133 --cctx_count; 1316 --cctx_count;
1134 coro_destroy (&cctx->cctx); 1317 coro_destroy (&cctx->cctx);
1135 1318
1136 /* coro_transfer creates new, empty cctx's */ 1319 /* coro_transfer creates new, empty cctx's */
1137 if (cctx->sptr) 1320 if (cctx->sptr)
1138 { 1321 {
1139#if CORO_USE_VALGRIND 1322 #if CORO_USE_VALGRIND
1140 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1323 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1141#endif 1324 #endif
1142 1325
1143#if HAVE_MMAP 1326#if HAVE_MMAP
1144 if (cctx->flags & CC_MAPPED) 1327 if (cctx->flags & CC_MAPPED)
1145 munmap (cctx->sptr, cctx->ssize); 1328 munmap (cctx->sptr, cctx->ssize);
1146 else 1329 else
… …
1167 return cctx; 1350 return cctx;
1168 1351
1169 cctx_destroy (cctx); 1352 cctx_destroy (cctx);
1170 } 1353 }
1171 1354
1172 return cctx_new (); 1355 return cctx_new_run ();
1173} 1356}
1174 1357
1175static void 1358static void
1176cctx_put (coro_cctx *cctx) 1359cctx_put (coro_cctx *cctx)
1177{ 1360{
1178 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1361 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1179 1362
1180 /* free another cctx if overlimit */ 1363 /* free another cctx if overlimit */
1181 if (expect_false (cctx_idle >= cctx_max_idle)) 1364 if (expect_false (cctx_idle >= cctx_max_idle))
1182 { 1365 {
1183 coro_cctx *first = cctx_first; 1366 coro_cctx *first = cctx_first;
… …
1195/** coroutine switching *****************************************************/ 1378/** coroutine switching *****************************************************/
1196 1379
1197static void 1380static void
1198transfer_check (pTHX_ struct coro *prev, struct coro *next) 1381transfer_check (pTHX_ struct coro *prev, struct coro *next)
1199{ 1382{
1383 /* TODO: throwing up here is considered harmful */
1384
1200 if (expect_true (prev != next)) 1385 if (expect_true (prev != next))
1201 { 1386 {
1202 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1387 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1203 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1388 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1204 1389
1205 if (expect_false (next->flags & CF_RUNNING))
1206 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1207
1208 if (expect_false (next->flags & CF_DESTROYED)) 1390 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1209 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1391 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1210 1392
1211#if !PERL_VERSION_ATLEAST (5,10,0) 1393#if !PERL_VERSION_ATLEAST (5,10,0)
1212 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1394 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1213 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1395 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1214#endif 1396#endif
1215 } 1397 }
1216} 1398}
1217 1399
1218/* always use the TRANSFER macro */ 1400/* always use the TRANSFER macro */
1219static void NOINLINE 1401static void NOINLINE /* noinline so we have a fixed stackframe */
1220transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1402transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1221{ 1403{
1222 dSTACKLEVEL; 1404 dSTACKLEVEL;
1223 1405
1224 /* sometimes transfer is only called to set idle_sp */ 1406 /* sometimes transfer is only called to set idle_sp */
1225 if (expect_false (!next)) 1407 if (expect_false (!prev))
1226 { 1408 {
1227 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1409 cctx_current->idle_sp = STACKLEVEL;
1228 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1410 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1229 } 1411 }
1230 else if (expect_true (prev != next)) 1412 else if (expect_true (prev != next))
1231 { 1413 {
1232 static volatile int has_throw;
1233 coro_cctx *prev__cctx; 1414 coro_cctx *cctx_prev;
1234 1415
1235 if (expect_false (prev->flags & CF_NEW)) 1416 if (expect_false (prev->flags & CF_NEW))
1236 { 1417 {
1237 /* create a new empty/source context */ 1418 /* create a new empty/source context */
1238 ++cctx_count;
1239 New (0, prev->cctx, 1, coro_cctx);
1240 prev->cctx->sptr = 0;
1241 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1242
1243 prev->flags &= ~CF_NEW; 1419 prev->flags &= ~CF_NEW;
1244 prev->flags |= CF_RUNNING; 1420 prev->flags |= CF_RUNNING;
1245 } 1421 }
1246 1422
1247 prev->flags &= ~CF_RUNNING; 1423 prev->flags &= ~CF_RUNNING;
1248 next->flags |= CF_RUNNING; 1424 next->flags |= CF_RUNNING;
1249
1250 LOCK;
1251 1425
1252 /* first get rid of the old state */ 1426 /* first get rid of the old state */
1253 save_perl (aTHX_ prev); 1427 save_perl (aTHX_ prev);
1254 1428
1255 if (expect_false (next->flags & CF_NEW)) 1429 if (expect_false (next->flags & CF_NEW))
… …
1260 coro_setup (aTHX_ next); 1434 coro_setup (aTHX_ next);
1261 } 1435 }
1262 else 1436 else
1263 load_perl (aTHX_ next); 1437 load_perl (aTHX_ next);
1264 1438
1265 prev__cctx = prev->cctx;
1266
1267 /* possibly "free" the cctx */ 1439 /* possibly untie and reuse the cctx */
1268 if (expect_true ( 1440 if (expect_true (
1269 prev__cctx->idle_sp == STACKLEVEL 1441 cctx_current->idle_sp == STACKLEVEL
1270 && !(prev__cctx->flags & CC_TRACE) 1442 && !(cctx_current->flags & CC_TRACE)
1271 && !force_cctx 1443 && !force_cctx
1272 )) 1444 ))
1273 { 1445 {
1274 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1446 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1275 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1447 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1276 1448
1277 prev->cctx = 0;
1278
1279 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1449 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1280 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1450 /* without this the next cctx_get might destroy the running cctx while still in use */
1281 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1451 if (expect_false (CCTX_EXPIRED (cctx_current)))
1282 if (!next->cctx) 1452 if (expect_true (!next->cctx))
1283 next->cctx = cctx_get (aTHX); 1453 next->cctx = cctx_get (aTHX);
1284 1454
1285 cctx_put (prev__cctx); 1455 cctx_put (cctx_current);
1286 } 1456 }
1457 else
1458 prev->cctx = cctx_current;
1287 1459
1288 ++next->usecount; 1460 ++next->usecount;
1289 1461
1290 if (expect_true (!next->cctx)) 1462 cctx_prev = cctx_current;
1291 next->cctx = cctx_get (aTHX); 1463 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1292 1464
1293 has_throw = !!next->throw; 1465 next->cctx = 0;
1294 1466
1295 if (expect_false (prev__cctx != next->cctx)) 1467 if (expect_false (cctx_prev != cctx_current))
1296 { 1468 {
1297 prev__cctx->top_env = PL_top_env; 1469 cctx_prev->top_env = PL_top_env;
1298 PL_top_env = next->cctx->top_env; 1470 PL_top_env = cctx_current->top_env;
1299 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1471 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1300 } 1472 }
1301 1473
1302 free_coro_mortal (aTHX); 1474 transfer_tail (aTHX);
1303 UNLOCK;
1304
1305 if (expect_false (has_throw))
1306 {
1307 struct coro *coro = SvSTATE (coro_current);
1308
1309 if (coro->throw)
1310 {
1311 SV *exception = coro->throw;
1312 coro->throw = 0;
1313 sv_setsv (ERRSV, exception);
1314 croak (0);
1315 }
1316 }
1317 } 1475 }
1318} 1476}
1319
1320struct transfer_args
1321{
1322 struct coro *prev, *next;
1323};
1324 1477
1325#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1478#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1326#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1479#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1327 1480
1328/** high level stuff ********************************************************/ 1481/** high level stuff ********************************************************/
… …
1330static int 1483static int
1331coro_state_destroy (pTHX_ struct coro *coro) 1484coro_state_destroy (pTHX_ struct coro *coro)
1332{ 1485{
1333 if (coro->flags & CF_DESTROYED) 1486 if (coro->flags & CF_DESTROYED)
1334 return 0; 1487 return 0;
1488
1489 if (coro->on_destroy && !PL_dirty)
1490 coro->on_destroy (aTHX_ coro);
1335 1491
1336 coro->flags |= CF_DESTROYED; 1492 coro->flags |= CF_DESTROYED;
1337 1493
1338 if (coro->flags & CF_READY) 1494 if (coro->flags & CF_READY)
1339 { 1495 {
1340 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1496 /* reduce nready, as destroying a ready coro effectively unreadies it */
1341 /* alternative: look through all ready queues and remove the coro */ 1497 /* alternative: look through all ready queues and remove the coro */
1342 LOCK;
1343 --coro_nready; 1498 --coro_nready;
1344 UNLOCK;
1345 } 1499 }
1346 else 1500 else
1347 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1501 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1348 1502
1349 if (coro->mainstack && coro->mainstack != main_mainstack) 1503 if (coro->mainstack
1504 && coro->mainstack != main_mainstack
1505 && coro->slot
1506 && !PL_dirty)
1350 { 1507 {
1351 struct coro temp; 1508 struct coro *current = SvSTATE_current;
1352 1509
1353 if (coro->flags & CF_RUNNING) 1510 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1354 croak ("FATAL: tried to destroy currently running coroutine");
1355 1511
1356 save_perl (aTHX_ &temp); 1512 save_perl (aTHX_ current);
1357 load_perl (aTHX_ coro); 1513 load_perl (aTHX_ coro);
1358 1514
1359 coro_destruct (aTHX_ coro); 1515 coro_destruct_perl (aTHX_ coro);
1360 1516
1361 load_perl (aTHX_ &temp); 1517 load_perl (aTHX_ current);
1362 1518
1363 coro->slot = 0; 1519 coro->slot = 0;
1364 } 1520 }
1365 1521
1366 cctx_destroy (coro->cctx); 1522 cctx_destroy (coro->cctx);
1523 SvREFCNT_dec (coro->startcv);
1367 SvREFCNT_dec (coro->args); 1524 SvREFCNT_dec (coro->args);
1525 SvREFCNT_dec (CORO_THROW);
1368 1526
1369 if (coro->next) coro->next->prev = coro->prev; 1527 if (coro->next) coro->next->prev = coro->prev;
1370 if (coro->prev) coro->prev->next = coro->next; 1528 if (coro->prev) coro->prev->next = coro->next;
1371 if (coro == coro_first) coro_first = coro->next; 1529 if (coro == coro_first) coro_first = coro->next;
1372 1530
… …
1410# define MGf_DUP 0 1568# define MGf_DUP 0
1411#endif 1569#endif
1412}; 1570};
1413 1571
1414static void 1572static void
1415prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1573prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1416{ 1574{
1417 ta->prev = SvSTATE (prev_sv); 1575 ta->prev = SvSTATE (prev_sv);
1418 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE (next_sv);
1419 TRANSFER_CHECK (*ta); 1577 TRANSFER_CHECK (*ta);
1420} 1578}
1421 1579
1422static void 1580static void
1423api_transfer (SV *prev_sv, SV *next_sv) 1581api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1424{ 1582{
1425 dTHX;
1426 struct transfer_args ta; 1583 struct coro_transfer_args ta;
1427 1584
1428 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1585 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1429 TRANSFER (ta, 1); 1586 TRANSFER (ta, 1);
1430} 1587}
1431 1588
1589/*****************************************************************************/
1590/* gensub: simple closure generation utility */
1591
1592#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1593
1594/* create a closure from XS, returns a code reference */
1595/* the arg can be accessed via GENSUB_ARG from the callback */
1596/* the callback must use dXSARGS/XSRETURN */
1597static SV *
1598gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1599{
1600 CV *cv = (CV *)newSV (0);
1601
1602 sv_upgrade ((SV *)cv, SVt_PVCV);
1603
1604 CvANON_on (cv);
1605 CvISXSUB_on (cv);
1606 CvXSUB (cv) = xsub;
1607 GENSUB_ARG = arg;
1608
1609 return newRV_noinc ((SV *)cv);
1610}
1611
1432/** Coro ********************************************************************/ 1612/** Coro ********************************************************************/
1433 1613
1434static void 1614INLINE void
1435coro_enq (pTHX_ SV *coro_sv) 1615coro_enq (pTHX_ struct coro *coro)
1436{ 1616{
1437 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1617 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1438} 1618}
1439 1619
1440static SV * 1620INLINE SV *
1441coro_deq (pTHX) 1621coro_deq (pTHX)
1442{ 1622{
1443 int prio; 1623 int prio;
1444 1624
1445 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1625 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1448 1628
1449 return 0; 1629 return 0;
1450} 1630}
1451 1631
1452static int 1632static int
1453api_ready (SV *coro_sv) 1633api_ready (pTHX_ SV *coro_sv)
1454{ 1634{
1455 dTHX;
1456 struct coro *coro; 1635 struct coro *coro;
1457 SV *sv_hook; 1636 SV *sv_hook;
1458 void (*xs_hook)(void); 1637 void (*xs_hook)(void);
1459 1638
1460 if (SvROK (coro_sv))
1461 coro_sv = SvRV (coro_sv);
1462
1463 coro = SvSTATE (coro_sv); 1639 coro = SvSTATE (coro_sv);
1464 1640
1465 if (coro->flags & CF_READY) 1641 if (coro->flags & CF_READY)
1466 return 0; 1642 return 0;
1467 1643
1468 coro->flags |= CF_READY; 1644 coro->flags |= CF_READY;
1469 1645
1470 LOCK;
1471
1472 sv_hook = coro_nready ? 0 : coro_readyhook; 1646 sv_hook = coro_nready ? 0 : coro_readyhook;
1473 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1647 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1474 1648
1475 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1649 coro_enq (aTHX_ coro);
1476 ++coro_nready; 1650 ++coro_nready;
1477 1651
1478 UNLOCK;
1479
1480 if (sv_hook) 1652 if (sv_hook)
1481 { 1653 {
1482 dSP; 1654 dSP;
1483 1655
1484 ENTER; 1656 ENTER;
1485 SAVETMPS; 1657 SAVETMPS;
1486 1658
1487 PUSHMARK (SP); 1659 PUSHMARK (SP);
1488 PUTBACK; 1660 PUTBACK;
1489 call_sv (sv_hook, G_DISCARD); 1661 call_sv (sv_hook, G_VOID | G_DISCARD);
1490 SPAGAIN;
1491 1662
1492 FREETMPS; 1663 FREETMPS;
1493 LEAVE; 1664 LEAVE;
1494 } 1665 }
1495 1666
… …
1498 1669
1499 return 1; 1670 return 1;
1500} 1671}
1501 1672
1502static int 1673static int
1503api_is_ready (SV *coro_sv) 1674api_is_ready (pTHX_ SV *coro_sv)
1504{ 1675{
1505 dTHX;
1506 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1676 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1507} 1677}
1508 1678
1509static void 1679/* expects to own a reference to next->hv */
1680INLINE void
1510prepare_schedule (pTHX_ struct transfer_args *ta) 1681prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1511{ 1682{
1512 SV *prev_sv, *next_sv;
1513
1514 for (;;)
1515 {
1516 LOCK;
1517 next_sv = coro_deq (aTHX);
1518
1519 /* nothing to schedule: call the idle handler */
1520 if (expect_false (!next_sv))
1521 {
1522 dSP;
1523 UNLOCK;
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 continue;
1536 }
1537
1538 ta->next = SvSTATE (next_sv);
1539
1540 /* cannot transfer to destroyed coros, skip and look for next */
1541 if (expect_false (ta->next->flags & CF_DESTROYED))
1542 {
1543 UNLOCK;
1544 SvREFCNT_dec (next_sv);
1545 /* coro_nready is already taken care of by destroy */
1546 continue;
1547 }
1548
1549 --coro_nready;
1550 UNLOCK;
1551 break;
1552 }
1553
1554 /* free this only after the transfer */
1555 prev_sv = SvRV (coro_current); 1683 SV *prev_sv = SvRV (coro_current);
1684
1556 ta->prev = SvSTATE (prev_sv); 1685 ta->prev = SvSTATE_hv (prev_sv);
1686 ta->next = next;
1687
1557 TRANSFER_CHECK (*ta); 1688 TRANSFER_CHECK (*ta);
1558 assert (ta->next->flags & CF_READY); 1689
1559 ta->next->flags &= ~CF_READY;
1560 SvRV_set (coro_current, next_sv); 1690 SvRV_set (coro_current, (SV *)next->hv);
1561 1691
1562 LOCK;
1563 free_coro_mortal (aTHX); 1692 free_coro_mortal (aTHX);
1564 coro_mortal = prev_sv; 1693 coro_mortal = prev_sv;
1565 UNLOCK;
1566} 1694}
1567 1695
1568static void 1696static void
1697prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1698{
1699 for (;;)
1700 {
1701 SV *next_sv = coro_deq (aTHX);
1702
1703 if (expect_true (next_sv))
1704 {
1705 struct coro *next = SvSTATE_hv (next_sv);
1706
1707 /* cannot transfer to destroyed coros, skip and look for next */
1708 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1709 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1710 else
1711 {
1712 next->flags &= ~CF_READY;
1713 --coro_nready;
1714
1715 prepare_schedule_to (aTHX_ ta, next);
1716 break;
1717 }
1718 }
1719 else
1720 {
1721 /* nothing to schedule: call the idle handler */
1722 if (SvROK (sv_idle)
1723 && SvOBJECT (SvRV (sv_idle)))
1724 {
1725 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1726 api_ready (aTHX_ SvRV (sv_idle));
1727 --coro_nready;
1728 }
1729 else
1730 {
1731 dSP;
1732
1733 ENTER;
1734 SAVETMPS;
1735
1736 PUSHMARK (SP);
1737 PUTBACK;
1738 call_sv (sv_idle, G_VOID | G_DISCARD);
1739
1740 FREETMPS;
1741 LEAVE;
1742 }
1743 }
1744 }
1745}
1746
1747INLINE void
1569prepare_cede (pTHX_ struct transfer_args *ta) 1748prepare_cede (pTHX_ struct coro_transfer_args *ta)
1570{ 1749{
1571 api_ready (coro_current); 1750 api_ready (aTHX_ coro_current);
1572 prepare_schedule (aTHX_ ta); 1751 prepare_schedule (aTHX_ ta);
1573} 1752}
1574 1753
1754INLINE void
1755prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1756{
1757 SV *prev = SvRV (coro_current);
1758
1759 if (coro_nready)
1760 {
1761 prepare_schedule (aTHX_ ta);
1762 api_ready (aTHX_ prev);
1763 }
1764 else
1765 prepare_nop (aTHX_ ta);
1766}
1767
1768static void
1769api_schedule (pTHX)
1770{
1771 struct coro_transfer_args ta;
1772
1773 prepare_schedule (aTHX_ &ta);
1774 TRANSFER (ta, 1);
1775}
1776
1777static void
1778api_schedule_to (pTHX_ SV *coro_sv)
1779{
1780 struct coro_transfer_args ta;
1781 struct coro *next = SvSTATE (coro_sv);
1782
1783 SvREFCNT_inc_NN (coro_sv);
1784 prepare_schedule_to (aTHX_ &ta, next);
1785}
1786
1575static int 1787static int
1576prepare_cede_notself (pTHX_ struct transfer_args *ta) 1788api_cede (pTHX)
1577{ 1789{
1578 if (coro_nready) 1790 struct coro_transfer_args ta;
1579 { 1791
1580 SV *prev = SvRV (coro_current);
1581 prepare_schedule (aTHX_ ta); 1792 prepare_cede (aTHX_ &ta);
1582 api_ready (prev); 1793
1794 if (expect_true (ta.prev != ta.next))
1795 {
1796 TRANSFER (ta, 1);
1583 return 1; 1797 return 1;
1584 } 1798 }
1585 else 1799 else
1586 return 0; 1800 return 0;
1587} 1801}
1588 1802
1589static void
1590api_schedule (void)
1591{
1592 dTHX;
1593 struct transfer_args ta;
1594
1595 prepare_schedule (aTHX_ &ta);
1596 TRANSFER (ta, 1);
1597}
1598
1599static int 1803static int
1600api_cede (void) 1804api_cede_notself (pTHX)
1601{ 1805{
1602 dTHX; 1806 if (coro_nready)
1807 {
1603 struct transfer_args ta; 1808 struct coro_transfer_args ta;
1604 1809
1605 prepare_cede (aTHX_ &ta); 1810 prepare_cede_notself (aTHX_ &ta);
1606
1607 if (expect_true (ta.prev != ta.next))
1608 {
1609 TRANSFER (ta, 1); 1811 TRANSFER (ta, 1);
1610 return 1; 1812 return 1;
1611 } 1813 }
1612 else 1814 else
1613 return 0; 1815 return 0;
1614} 1816}
1615 1817
1616static int 1818static void
1617api_cede_notself (void)
1618{
1619 dTHX;
1620 struct transfer_args ta;
1621
1622 if (prepare_cede_notself (aTHX_ &ta))
1623 {
1624 TRANSFER (ta, 1);
1625 return 1;
1626 }
1627 else
1628 return 0;
1629}
1630
1631static void
1632api_trace (SV *coro_sv, int flags) 1819api_trace (pTHX_ SV *coro_sv, int flags)
1633{ 1820{
1634 dTHX;
1635 struct coro *coro = SvSTATE (coro_sv); 1821 struct coro *coro = SvSTATE (coro_sv);
1636 1822
1823 if (coro->flags & CF_RUNNING)
1824 croak ("cannot enable tracing on a running coroutine, caught");
1825
1637 if (flags & CC_TRACE) 1826 if (flags & CC_TRACE)
1638 { 1827 {
1639 if (!coro->cctx) 1828 if (!coro->cctx)
1640 coro->cctx = cctx_new (); 1829 coro->cctx = cctx_new_run ();
1641 else if (!(coro->cctx->flags & CC_TRACE)) 1830 else if (!(coro->cctx->flags & CC_TRACE))
1642 croak ("cannot enable tracing on coroutine with custom stack"); 1831 croak ("cannot enable tracing on coroutine with custom stack, caught");
1643 1832
1644 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1833 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1645 } 1834 }
1646 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1835 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1647 { 1836 {
… …
1652 else 1841 else
1653 coro->slot->runops = RUNOPS_DEFAULT; 1842 coro->slot->runops = RUNOPS_DEFAULT;
1654 } 1843 }
1655} 1844}
1656 1845
1846static void
1847coro_call_on_destroy (pTHX_ struct coro *coro)
1848{
1849 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1850 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1851
1852 if (on_destroyp)
1853 {
1854 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1855
1856 while (AvFILLp (on_destroy) >= 0)
1857 {
1858 dSP; /* don't disturb outer sp */
1859 SV *cb = av_pop (on_destroy);
1860
1861 PUSHMARK (SP);
1862
1863 if (statusp)
1864 {
1865 int i;
1866 AV *status = (AV *)SvRV (*statusp);
1867 EXTEND (SP, AvFILLp (status) + 1);
1868
1869 for (i = 0; i <= AvFILLp (status); ++i)
1870 PUSHs (AvARRAY (status)[i]);
1871 }
1872
1873 PUTBACK;
1874 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1875 }
1876 }
1877}
1878
1879static void
1880slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1881{
1882 int i;
1883 HV *hv = (HV *)SvRV (coro_current);
1884 AV *av = newAV ();
1885
1886 av_extend (av, items - 1);
1887 for (i = 0; i < items; ++i)
1888 av_push (av, SvREFCNT_inc_NN (arg [i]));
1889
1890 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1891
1892 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1893 api_ready (aTHX_ sv_manager);
1894
1895 frame->prepare = prepare_schedule;
1896 frame->check = slf_check_repeat;
1897
1898 /* as a minor optimisation, we could unwind all stacks here */
1899 /* but that puts extra pressure on pp_slf, and is not worth much */
1900 /*coro_unwind_stacks (aTHX);*/
1901}
1902
1903/*****************************************************************************/
1904/* async pool handler */
1905
1657static int 1906static int
1658coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1907slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1659{ 1908{
1660 AV *padlist; 1909 HV *hv = (HV *)SvRV (coro_current);
1661 AV *av = (AV *)mg->mg_obj; 1910 struct coro *coro = (struct coro *)frame->data;
1662 1911
1663 abort (); 1912 if (!coro->invoke_cb)
1913 return 1; /* loop till we have invoke */
1914 else
1915 {
1916 hv_store (hv, "desc", sizeof ("desc") - 1,
1917 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1918
1919 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1920
1921 {
1922 dSP;
1923 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1924 PUTBACK;
1925 }
1926
1927 SvREFCNT_dec (GvAV (PL_defgv));
1928 GvAV (PL_defgv) = coro->invoke_av;
1929 coro->invoke_av = 0;
1930
1931 return 0;
1932 }
1933}
1934
1935static void
1936slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1937{
1938 HV *hv = (HV *)SvRV (coro_current);
1939 struct coro *coro = SvSTATE_hv ((SV *)hv);
1940
1941 if (expect_true (coro->saved_deffh))
1942 {
1943 /* subsequent iteration */
1944 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1945 coro->saved_deffh = 0;
1946
1947 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1948 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1949 {
1950 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1951 coro->invoke_av = newAV ();
1952
1953 frame->prepare = prepare_nop;
1954 }
1955 else
1956 {
1957 av_clear (GvAV (PL_defgv));
1958 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1959
1960 coro->prio = 0;
1961
1962 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1963 api_trace (aTHX_ coro_current, 0);
1964
1965 frame->prepare = prepare_schedule;
1966 av_push (av_async_pool, SvREFCNT_inc (hv));
1967 }
1968 }
1969 else
1970 {
1971 /* first iteration, simply fall through */
1972 frame->prepare = prepare_nop;
1973 }
1974
1975 frame->check = slf_check_pool_handler;
1976 frame->data = (void *)coro;
1977}
1978
1979/*****************************************************************************/
1980/* rouse callback */
1981
1982#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1983
1984static void
1985coro_rouse_callback (pTHX_ CV *cv)
1986{
1987 dXSARGS;
1988 SV *data = (SV *)GENSUB_ARG;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 {
1992 /* first call, set args */
1993 SV *coro = SvRV (data);
1994 AV *av = newAV ();
1995
1996 SvRV_set (data, (SV *)av);
1997
1998 /* better take a full copy of the arguments */
1999 while (items--)
2000 av_store (av, items, newSVsv (ST (items)));
2001
2002 api_ready (aTHX_ coro);
2003 SvREFCNT_dec (coro);
2004 }
2005
2006 XSRETURN_EMPTY;
2007}
2008
2009static int
2010slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2011{
2012 SV *data = (SV *)frame->data;
2013
2014 if (CORO_THROW)
2015 return 0;
2016
2017 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2018 return 1;
2019
2020 /* now push all results on the stack */
2021 {
2022 dSP;
2023 AV *av = (AV *)SvRV (data);
2024 int i;
2025
2026 EXTEND (SP, AvFILLp (av) + 1);
2027 for (i = 0; i <= AvFILLp (av); ++i)
2028 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2029
2030 /* we have stolen the elements, so set length to zero and free */
2031 AvFILLp (av) = -1;
2032 av_undef (av);
2033
2034 PUTBACK;
2035 }
1664 2036
1665 return 0; 2037 return 0;
1666} 2038}
1667 2039
1668static MGVTBL coro_gensub_vtbl = { 2040static void
1669 0, 0, 0, 0, 2041slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1670 coro_gensub_free 2042{
1671}; 2043 SV *cb;
2044
2045 if (items)
2046 cb = arg [0];
2047 else
2048 {
2049 struct coro *coro = SvSTATE_current;
2050
2051 if (!coro->rouse_cb)
2052 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2053
2054 cb = sv_2mortal (coro->rouse_cb);
2055 coro->rouse_cb = 0;
2056 }
2057
2058 if (!SvROK (cb)
2059 || SvTYPE (SvRV (cb)) != SVt_PVCV
2060 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2061 croak ("Coro::rouse_wait called with illegal callback argument,");
2062
2063 {
2064 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2065 SV *data = (SV *)GENSUB_ARG;
2066
2067 frame->data = (void *)data;
2068 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2069 frame->check = slf_check_rouse_wait;
2070 }
2071}
2072
2073static SV *
2074coro_new_rouse_cb (pTHX)
2075{
2076 HV *hv = (HV *)SvRV (coro_current);
2077 struct coro *coro = SvSTATE_hv (hv);
2078 SV *data = newRV_inc ((SV *)hv);
2079 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2080
2081 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2082 SvREFCNT_dec (data); /* magicext increases the refcount */
2083
2084 SvREFCNT_dec (coro->rouse_cb);
2085 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2086
2087 return cb;
2088}
2089
2090/*****************************************************************************/
2091/* schedule-like-function opcode (SLF) */
2092
2093static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2094static const CV *slf_cv;
2095static SV **slf_argv;
2096static int slf_argc, slf_arga; /* count, allocated */
2097static I32 slf_ax; /* top of stack, for restore */
2098
2099/* this restores the stack in the case we patched the entersub, to */
2100/* recreate the stack frame as perl will on following calls */
2101/* since entersub cleared the stack */
2102static OP *
2103pp_restore (pTHX)
2104{
2105 int i;
2106 SV **SP = PL_stack_base + slf_ax;
2107
2108 PUSHMARK (SP);
2109
2110 EXTEND (SP, slf_argc + 1);
2111
2112 for (i = 0; i < slf_argc; ++i)
2113 PUSHs (sv_2mortal (slf_argv [i]));
2114
2115 PUSHs ((SV *)CvGV (slf_cv));
2116
2117 RETURNOP (slf_restore.op_first);
2118}
2119
2120static void
2121slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2122{
2123 SV **arg = (SV **)slf_frame.data;
2124
2125 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2126}
2127
2128static void
2129slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 if (items != 2)
2132 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2133
2134 frame->prepare = slf_prepare_transfer;
2135 frame->check = slf_check_nop;
2136 frame->data = (void *)arg; /* let's hope it will stay valid */
2137}
2138
2139static void
2140slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_schedule;
2143 frame->check = slf_check_nop;
2144}
2145
2146static void
2147slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2148{
2149 struct coro *next = (struct coro *)slf_frame.data;
2150
2151 SvREFCNT_inc_NN (next->hv);
2152 prepare_schedule_to (aTHX_ ta, next);
2153}
2154
2155static void
2156slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2157{
2158 if (!items)
2159 croak ("Coro::schedule_to expects a coroutine argument, caught");
2160
2161 frame->data = (void *)SvSTATE (arg [0]);
2162 frame->prepare = slf_prepare_schedule_to;
2163 frame->check = slf_check_nop;
2164}
2165
2166static void
2167slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2168{
2169 api_ready (aTHX_ SvRV (coro_current));
2170
2171 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2172}
2173
2174static void
2175slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 frame->prepare = prepare_cede;
2178 frame->check = slf_check_nop;
2179}
2180
2181static void
2182slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2183{
2184 frame->prepare = prepare_cede_notself;
2185 frame->check = slf_check_nop;
2186}
2187
2188/*
2189 * these not obviously related functions are all rolled into one
2190 * function to increase chances that they all will call transfer with the same
2191 * stack offset
2192 * SLF stands for "schedule-like-function".
2193 */
2194static OP *
2195pp_slf (pTHX)
2196{
2197 I32 checkmark; /* mark SP to see how many elements check has pushed */
2198
2199 /* set up the slf frame, unless it has already been set-up */
2200 /* the latter happens when a new coro has been started */
2201 /* or when a new cctx was attached to an existing coroutine */
2202 if (expect_true (!slf_frame.prepare))
2203 {
2204 /* first iteration */
2205 dSP;
2206 SV **arg = PL_stack_base + TOPMARK + 1;
2207 int items = SP - arg; /* args without function object */
2208 SV *gv = *sp;
2209
2210 /* do a quick consistency check on the "function" object, and if it isn't */
2211 /* for us, divert to the real entersub */
2212 if (SvTYPE (gv) != SVt_PVGV
2213 || !GvCV (gv)
2214 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2215 return PL_ppaddr[OP_ENTERSUB](aTHX);
2216
2217 if (!(PL_op->op_flags & OPf_STACKED))
2218 {
2219 /* ampersand-form of call, use @_ instead of stack */
2220 AV *av = GvAV (PL_defgv);
2221 arg = AvARRAY (av);
2222 items = AvFILLp (av) + 1;
2223 }
2224
2225 /* now call the init function, which needs to set up slf_frame */
2226 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2227 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2228
2229 /* pop args */
2230 SP = PL_stack_base + POPMARK;
2231
2232 PUTBACK;
2233 }
2234
2235 /* now that we have a slf_frame, interpret it! */
2236 /* we use a callback system not to make the code needlessly */
2237 /* complicated, but so we can run multiple perl coros from one cctx */
2238
2239 do
2240 {
2241 struct coro_transfer_args ta;
2242
2243 slf_frame.prepare (aTHX_ &ta);
2244 TRANSFER (ta, 0);
2245
2246 checkmark = PL_stack_sp - PL_stack_base;
2247 }
2248 while (slf_frame.check (aTHX_ &slf_frame));
2249
2250 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2251
2252 /* exception handling */
2253 if (expect_false (CORO_THROW))
2254 {
2255 SV *exception = sv_2mortal (CORO_THROW);
2256
2257 CORO_THROW = 0;
2258 sv_setsv (ERRSV, exception);
2259 croak (0);
2260 }
2261
2262 /* return value handling - mostly like entersub */
2263 /* make sure we put something on the stack in scalar context */
2264 if (GIMME_V == G_SCALAR)
2265 {
2266 dSP;
2267 SV **bot = PL_stack_base + checkmark;
2268
2269 if (sp == bot) /* too few, push undef */
2270 bot [1] = &PL_sv_undef;
2271 else if (sp != bot + 1) /* too many, take last one */
2272 bot [1] = *sp;
2273
2274 SP = bot + 1;
2275
2276 PUTBACK;
2277 }
2278
2279 return NORMAL;
2280}
2281
2282static void
2283api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2284{
2285 int i;
2286 SV **arg = PL_stack_base + ax;
2287 int items = PL_stack_sp - arg + 1;
2288
2289 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2290
2291 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2292 && PL_op->op_ppaddr != pp_slf)
2293 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2294
2295 CvFLAGS (cv) |= CVf_SLF;
2296 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2297 slf_cv = cv;
2298
2299 /* we patch the op, and then re-run the whole call */
2300 /* we have to put the same argument on the stack for this to work */
2301 /* and this will be done by pp_restore */
2302 slf_restore.op_next = (OP *)&slf_restore;
2303 slf_restore.op_type = OP_CUSTOM;
2304 slf_restore.op_ppaddr = pp_restore;
2305 slf_restore.op_first = PL_op;
2306
2307 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2308
2309 if (PL_op->op_flags & OPf_STACKED)
2310 {
2311 if (items > slf_arga)
2312 {
2313 slf_arga = items;
2314 free (slf_argv);
2315 slf_argv = malloc (slf_arga * sizeof (SV *));
2316 }
2317
2318 slf_argc = items;
2319
2320 for (i = 0; i < items; ++i)
2321 slf_argv [i] = SvREFCNT_inc (arg [i]);
2322 }
2323 else
2324 slf_argc = 0;
2325
2326 PL_op->op_ppaddr = pp_slf;
2327 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2328
2329 PL_op = (OP *)&slf_restore;
2330}
2331
2332/*****************************************************************************/
2333/* dynamic wind */
2334
2335static void
2336on_enterleave_call (pTHX_ SV *cb)
2337{
2338 dSP;
2339
2340 PUSHSTACK;
2341
2342 PUSHMARK (SP);
2343 PUTBACK;
2344 call_sv (cb, G_VOID | G_DISCARD);
2345 SPAGAIN;
2346
2347 POPSTACK;
2348}
2349
2350static SV *
2351coro_avp_pop_and_free (pTHX_ AV **avp)
2352{
2353 AV *av = *avp;
2354 SV *res = av_pop (av);
2355
2356 if (AvFILLp (av) < 0)
2357 {
2358 *avp = 0;
2359 SvREFCNT_dec (av);
2360 }
2361
2362 return res;
2363}
2364
2365static void
2366coro_pop_on_enter (pTHX_ void *coro)
2367{
2368 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2369 SvREFCNT_dec (cb);
2370}
2371
2372static void
2373coro_pop_on_leave (pTHX_ void *coro)
2374{
2375 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2376 on_enterleave_call (aTHX_ sv_2mortal (cb));
2377}
1672 2378
1673/*****************************************************************************/ 2379/*****************************************************************************/
1674/* PerlIO::cede */ 2380/* PerlIO::cede */
1675 2381
1676typedef struct 2382typedef struct
… …
1704 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2410 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1705 double now = nvtime (); 2411 double now = nvtime ();
1706 2412
1707 if (now >= self->next) 2413 if (now >= self->next)
1708 { 2414 {
1709 api_cede (); 2415 api_cede (aTHX);
1710 self->next = now + self->every; 2416 self->next = now + self->every;
1711 } 2417 }
1712 2418
1713 return PerlIOBuf_flush (aTHX_ f); 2419 return PerlIOBuf_flush (aTHX_ f);
1714} 2420}
… …
1743 PerlIOBuf_get_ptr, 2449 PerlIOBuf_get_ptr,
1744 PerlIOBuf_get_cnt, 2450 PerlIOBuf_get_cnt,
1745 PerlIOBuf_set_ptrcnt, 2451 PerlIOBuf_set_ptrcnt,
1746}; 2452};
1747 2453
2454/*****************************************************************************/
2455/* Coro::Semaphore & Coro::Signal */
2456
2457static SV *
2458coro_waitarray_new (pTHX_ int count)
2459{
2460 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2461 AV *av = newAV ();
2462 SV **ary;
2463
2464 /* unfortunately, building manually saves memory */
2465 Newx (ary, 2, SV *);
2466 AvALLOC (av) = ary;
2467#if PERL_VERSION_ATLEAST (5,10,0)
2468 AvARRAY (av) = ary;
2469#else
2470 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2471 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2472 SvPVX ((SV *)av) = (char *)ary;
2473#endif
2474 AvMAX (av) = 1;
2475 AvFILLp (av) = 0;
2476 ary [0] = newSViv (count);
2477
2478 return newRV_noinc ((SV *)av);
2479}
2480
2481/* semaphore */
2482
2483static void
2484coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2485{
2486 SV *count_sv = AvARRAY (av)[0];
2487 IV count = SvIVX (count_sv);
2488
2489 count += adjust;
2490 SvIVX (count_sv) = count;
2491
2492 /* now wake up as many waiters as are expected to lock */
2493 while (count > 0 && AvFILLp (av) > 0)
2494 {
2495 SV *cb;
2496
2497 /* swap first two elements so we can shift a waiter */
2498 AvARRAY (av)[0] = AvARRAY (av)[1];
2499 AvARRAY (av)[1] = count_sv;
2500 cb = av_shift (av);
2501
2502 if (SvOBJECT (cb))
2503 {
2504 api_ready (aTHX_ cb);
2505 --count;
2506 }
2507 else if (SvTYPE (cb) == SVt_PVCV)
2508 {
2509 dSP;
2510 PUSHMARK (SP);
2511 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2512 PUTBACK;
2513 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2514 }
2515
2516 SvREFCNT_dec (cb);
2517 }
2518}
2519
2520static void
2521coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2522{
2523 /* call $sem->adjust (0) to possibly wake up some other waiters */
2524 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2525}
2526
2527static int
2528slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2529{
2530 AV *av = (AV *)frame->data;
2531 SV *count_sv = AvARRAY (av)[0];
2532
2533 /* if we are about to throw, don't actually acquire the lock, just throw */
2534 if (CORO_THROW)
2535 return 0;
2536 else if (SvIVX (count_sv) > 0)
2537 {
2538 SvSTATE_current->on_destroy = 0;
2539
2540 if (acquire)
2541 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2542 else
2543 coro_semaphore_adjust (aTHX_ av, 0);
2544
2545 return 0;
2546 }
2547 else
2548 {
2549 int i;
2550 /* if we were woken up but can't down, we look through the whole */
2551 /* waiters list and only add us if we aren't in there already */
2552 /* this avoids some degenerate memory usage cases */
2553
2554 for (i = 1; i <= AvFILLp (av); ++i)
2555 if (AvARRAY (av)[i] == SvRV (coro_current))
2556 return 1;
2557
2558 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2559 return 1;
2560 }
2561}
2562
2563static int
2564slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2565{
2566 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2567}
2568
2569static int
2570slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2571{
2572 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2573}
2574
2575static void
2576slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2577{
2578 AV *av = (AV *)SvRV (arg [0]);
2579
2580 if (SvIVX (AvARRAY (av)[0]) > 0)
2581 {
2582 frame->data = (void *)av;
2583 frame->prepare = prepare_nop;
2584 }
2585 else
2586 {
2587 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2588
2589 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2590 frame->prepare = prepare_schedule;
2591
2592 /* to avoid race conditions when a woken-up coro gets terminated */
2593 /* we arrange for a temporary on_destroy that calls adjust (0) */
2594 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2595 }
2596}
2597
2598static void
2599slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2600{
2601 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2602 frame->check = slf_check_semaphore_down;
2603}
2604
2605static void
2606slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2607{
2608 if (items >= 2)
2609 {
2610 /* callback form */
2611 AV *av = (AV *)SvRV (arg [0]);
2612 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2613
2614 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2615
2616 if (SvIVX (AvARRAY (av)[0]) > 0)
2617 coro_semaphore_adjust (aTHX_ av, 0);
2618
2619 frame->prepare = prepare_nop;
2620 frame->check = slf_check_nop;
2621 }
2622 else
2623 {
2624 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2625 frame->check = slf_check_semaphore_wait;
2626 }
2627}
2628
2629/* signal */
2630
2631static void
2632coro_signal_wake (pTHX_ AV *av, int count)
2633{
2634 SvIVX (AvARRAY (av)[0]) = 0;
2635
2636 /* now signal count waiters */
2637 while (count > 0 && AvFILLp (av) > 0)
2638 {
2639 SV *cb;
2640
2641 /* swap first two elements so we can shift a waiter */
2642 cb = AvARRAY (av)[0];
2643 AvARRAY (av)[0] = AvARRAY (av)[1];
2644 AvARRAY (av)[1] = cb;
2645
2646 cb = av_shift (av);
2647
2648 api_ready (aTHX_ cb);
2649 sv_setiv (cb, 0); /* signal waiter */
2650 SvREFCNT_dec (cb);
2651
2652 --count;
2653 }
2654}
2655
2656static int
2657slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2658{
2659 /* if we are about to throw, also stop waiting */
2660 return SvROK ((SV *)frame->data) && !CORO_THROW;
2661}
2662
2663static void
2664slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2665{
2666 AV *av = (AV *)SvRV (arg [0]);
2667
2668 if (SvIVX (AvARRAY (av)[0]))
2669 {
2670 SvIVX (AvARRAY (av)[0]) = 0;
2671 frame->prepare = prepare_nop;
2672 frame->check = slf_check_nop;
2673 }
2674 else
2675 {
2676 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2677
2678 av_push (av, waiter);
2679
2680 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2681 frame->prepare = prepare_schedule;
2682 frame->check = slf_check_signal_wait;
2683 }
2684}
2685
2686/*****************************************************************************/
2687/* Coro::AIO */
2688
2689#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2690
2691/* helper storage struct */
2692struct io_state
2693{
2694 int errorno;
2695 I32 laststype; /* U16 in 5.10.0 */
2696 int laststatval;
2697 Stat_t statcache;
2698};
2699
2700static void
2701coro_aio_callback (pTHX_ CV *cv)
2702{
2703 dXSARGS;
2704 AV *state = (AV *)GENSUB_ARG;
2705 SV *coro = av_pop (state);
2706 SV *data_sv = newSV (sizeof (struct io_state));
2707
2708 av_extend (state, items - 1);
2709
2710 sv_upgrade (data_sv, SVt_PV);
2711 SvCUR_set (data_sv, sizeof (struct io_state));
2712 SvPOK_only (data_sv);
2713
2714 {
2715 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2716
2717 data->errorno = errno;
2718 data->laststype = PL_laststype;
2719 data->laststatval = PL_laststatval;
2720 data->statcache = PL_statcache;
2721 }
2722
2723 /* now build the result vector out of all the parameters and the data_sv */
2724 {
2725 int i;
2726
2727 for (i = 0; i < items; ++i)
2728 av_push (state, SvREFCNT_inc_NN (ST (i)));
2729 }
2730
2731 av_push (state, data_sv);
2732
2733 api_ready (aTHX_ coro);
2734 SvREFCNT_dec (coro);
2735 SvREFCNT_dec ((AV *)state);
2736}
2737
2738static int
2739slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2740{
2741 AV *state = (AV *)frame->data;
2742
2743 /* if we are about to throw, return early */
2744 /* this does not cancel the aio request, but at least */
2745 /* it quickly returns */
2746 if (CORO_THROW)
2747 return 0;
2748
2749 /* one element that is an RV? repeat! */
2750 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2751 return 1;
2752
2753 /* restore status */
2754 {
2755 SV *data_sv = av_pop (state);
2756 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2757
2758 errno = data->errorno;
2759 PL_laststype = data->laststype;
2760 PL_laststatval = data->laststatval;
2761 PL_statcache = data->statcache;
2762
2763 SvREFCNT_dec (data_sv);
2764 }
2765
2766 /* push result values */
2767 {
2768 dSP;
2769 int i;
2770
2771 EXTEND (SP, AvFILLp (state) + 1);
2772 for (i = 0; i <= AvFILLp (state); ++i)
2773 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2774
2775 PUTBACK;
2776 }
2777
2778 return 0;
2779}
2780
2781static void
2782slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2783{
2784 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2785 SV *coro_hv = SvRV (coro_current);
2786 struct coro *coro = SvSTATE_hv (coro_hv);
2787
2788 /* put our coroutine id on the state arg */
2789 av_push (state, SvREFCNT_inc_NN (coro_hv));
2790
2791 /* first see whether we have a non-zero priority and set it as AIO prio */
2792 if (coro->prio)
2793 {
2794 dSP;
2795
2796 static SV *prio_cv;
2797 static SV *prio_sv;
2798
2799 if (expect_false (!prio_cv))
2800 {
2801 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2802 prio_sv = newSViv (0);
2803 }
2804
2805 PUSHMARK (SP);
2806 sv_setiv (prio_sv, coro->prio);
2807 XPUSHs (prio_sv);
2808
2809 PUTBACK;
2810 call_sv (prio_cv, G_VOID | G_DISCARD);
2811 }
2812
2813 /* now call the original request */
2814 {
2815 dSP;
2816 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2817 int i;
2818
2819 PUSHMARK (SP);
2820
2821 /* first push all args to the stack */
2822 EXTEND (SP, items + 1);
2823
2824 for (i = 0; i < items; ++i)
2825 PUSHs (arg [i]);
2826
2827 /* now push the callback closure */
2828 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2829
2830 /* now call the AIO function - we assume our request is uncancelable */
2831 PUTBACK;
2832 call_sv ((SV *)req, G_VOID | G_DISCARD);
2833 }
2834
2835 /* now that the requets is going, we loop toll we have a result */
2836 frame->data = (void *)state;
2837 frame->prepare = prepare_schedule;
2838 frame->check = slf_check_aio_req;
2839}
2840
2841static void
2842coro_aio_req_xs (pTHX_ CV *cv)
2843{
2844 dXSARGS;
2845
2846 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2847
2848 XSRETURN_EMPTY;
2849}
2850
2851/*****************************************************************************/
2852
2853#if CORO_CLONE
2854# include "clone.c"
2855#endif
1748 2856
1749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2857MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1750 2858
1751PROTOTYPES: DISABLE 2859PROTOTYPES: DISABLE
1752 2860
1753BOOT: 2861BOOT:
1754{ 2862{
1755#ifdef USE_ITHREADS 2863#ifdef USE_ITHREADS
1756 MUTEX_INIT (&coro_lock); 2864# if CORO_PTHREAD
2865 coro_thx = PERL_GET_CONTEXT;
2866# endif
1757#endif 2867#endif
1758 BOOT_PAGESIZE; 2868 BOOT_PAGESIZE;
2869
2870 cctx_current = cctx_new_empty ();
1759 2871
1760 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2872 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1761 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2873 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1762 2874
1763 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2875 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1779 main_top_env = PL_top_env; 2891 main_top_env = PL_top_env;
1780 2892
1781 while (main_top_env->je_prev) 2893 while (main_top_env->je_prev)
1782 main_top_env = main_top_env->je_prev; 2894 main_top_env = main_top_env->je_prev;
1783 2895
2896 {
2897 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2898
2899 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2900 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2901
2902 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2903 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2904 }
2905
1784 coroapi.ver = CORO_API_VERSION; 2906 coroapi.ver = CORO_API_VERSION;
1785 coroapi.rev = CORO_API_REVISION; 2907 coroapi.rev = CORO_API_REVISION;
2908
1786 coroapi.transfer = api_transfer; 2909 coroapi.transfer = api_transfer;
2910
2911 coroapi.sv_state = SvSTATE_;
2912 coroapi.execute_slf = api_execute_slf;
2913 coroapi.prepare_nop = prepare_nop;
2914 coroapi.prepare_schedule = prepare_schedule;
2915 coroapi.prepare_cede = prepare_cede;
2916 coroapi.prepare_cede_notself = prepare_cede_notself;
1787 2917
1788 { 2918 {
1789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2919 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1790 2920
1791 if (!svp) croak ("Time::HiRes is required"); 2921 if (!svp) croak ("Time::HiRes is required");
… …
1797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2927 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1798} 2928}
1799 2929
1800SV * 2930SV *
1801new (char *klass, ...) 2931new (char *klass, ...)
2932 ALIAS:
2933 Coro::new = 1
1802 CODE: 2934 CODE:
1803{ 2935{
1804 struct coro *coro; 2936 struct coro *coro;
1805 MAGIC *mg; 2937 MAGIC *mg;
1806 HV *hv; 2938 HV *hv;
2939 CV *cb;
1807 int i; 2940 int i;
2941
2942 if (items > 1)
2943 {
2944 cb = coro_sv_2cv (aTHX_ ST (1));
2945
2946 if (!ix)
2947 {
2948 if (CvISXSUB (cb))
2949 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2950
2951 if (!CvROOT (cb))
2952 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2953 }
2954 }
1808 2955
1809 Newz (0, coro, 1, struct coro); 2956 Newz (0, coro, 1, struct coro);
1810 coro->args = newAV (); 2957 coro->args = newAV ();
1811 coro->flags = CF_NEW; 2958 coro->flags = CF_NEW;
1812 2959
… …
1817 coro->hv = hv = newHV (); 2964 coro->hv = hv = newHV ();
1818 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2965 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1819 mg->mg_flags |= MGf_DUP; 2966 mg->mg_flags |= MGf_DUP;
1820 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2967 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1821 2968
2969 if (items > 1)
2970 {
1822 av_extend (coro->args, items - 1); 2971 av_extend (coro->args, items - 1 + ix - 1);
2972
2973 if (ix)
2974 {
2975 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2976 cb = cv_coro_run;
2977 }
2978
2979 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2980
1823 for (i = 1; i < items; i++) 2981 for (i = 2; i < items; i++)
1824 av_push (coro->args, newSVsv (ST (i))); 2982 av_push (coro->args, newSVsv (ST (i)));
2983 }
1825} 2984}
1826 OUTPUT: 2985 OUTPUT:
1827 RETVAL 2986 RETVAL
1828 2987
1829# these not obviously related functions are all rolled into the same xs
1830# function to increase chances that they all will call transfer with the same
1831# stack offset
1832void 2988void
1833_set_stacklevel (...) 2989transfer (...)
1834 ALIAS: 2990 PROTOTYPE: $$
1835 Coro::State::transfer = 1 2991 CODE:
1836 Coro::schedule = 2 2992 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1837 Coro::cede = 3
1838 Coro::cede_notself = 4
1839 CODE:
1840{
1841 struct transfer_args ta;
1842
1843 PUTBACK;
1844 switch (ix)
1845 {
1846 case 0:
1847 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1848 ta.next = 0;
1849 break;
1850
1851 case 1:
1852 if (items != 2)
1853 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1854
1855 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1856 break;
1857
1858 case 2:
1859 prepare_schedule (aTHX_ &ta);
1860 break;
1861
1862 case 3:
1863 prepare_cede (aTHX_ &ta);
1864 break;
1865
1866 case 4:
1867 if (!prepare_cede_notself (aTHX_ &ta))
1868 XSRETURN_EMPTY;
1869
1870 break;
1871 }
1872 SPAGAIN;
1873
1874 BARRIER;
1875 PUTBACK;
1876 TRANSFER (ta, 0);
1877 SPAGAIN; /* might be the sp of a different coroutine now */
1878 /* be extra careful not to ever do anything after TRANSFER */
1879}
1880 2993
1881bool 2994bool
1882_destroy (SV *coro_sv) 2995_destroy (SV *coro_sv)
1883 CODE: 2996 CODE:
1884 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2997 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1889_exit (int code) 3002_exit (int code)
1890 PROTOTYPE: $ 3003 PROTOTYPE: $
1891 CODE: 3004 CODE:
1892 _exit (code); 3005 _exit (code);
1893 3006
3007SV *
3008clone (Coro::State coro)
3009 CODE:
3010{
3011#if CORO_CLONE
3012 struct coro *ncoro = coro_clone (aTHX_ coro);
3013 MAGIC *mg;
3014 /* TODO: too much duplication */
3015 ncoro->hv = newHV ();
3016 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3017 mg->mg_flags |= MGf_DUP;
3018 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3019#else
3020 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3021#endif
3022}
3023 OUTPUT:
3024 RETVAL
3025
1894int 3026int
1895cctx_stacksize (int new_stacksize = 0) 3027cctx_stacksize (int new_stacksize = 0)
3028 PROTOTYPE: ;$
1896 CODE: 3029 CODE:
1897 RETVAL = cctx_stacksize; 3030 RETVAL = cctx_stacksize;
1898 if (new_stacksize) 3031 if (new_stacksize)
1899 { 3032 {
1900 cctx_stacksize = new_stacksize; 3033 cctx_stacksize = new_stacksize;
… …
1903 OUTPUT: 3036 OUTPUT:
1904 RETVAL 3037 RETVAL
1905 3038
1906int 3039int
1907cctx_max_idle (int max_idle = 0) 3040cctx_max_idle (int max_idle = 0)
3041 PROTOTYPE: ;$
1908 CODE: 3042 CODE:
1909 RETVAL = cctx_max_idle; 3043 RETVAL = cctx_max_idle;
1910 if (max_idle > 1) 3044 if (max_idle > 1)
1911 cctx_max_idle = max_idle; 3045 cctx_max_idle = max_idle;
1912 OUTPUT: 3046 OUTPUT:
1913 RETVAL 3047 RETVAL
1914 3048
1915int 3049int
1916cctx_count () 3050cctx_count ()
3051 PROTOTYPE:
1917 CODE: 3052 CODE:
1918 RETVAL = cctx_count; 3053 RETVAL = cctx_count;
1919 OUTPUT: 3054 OUTPUT:
1920 RETVAL 3055 RETVAL
1921 3056
1922int 3057int
1923cctx_idle () 3058cctx_idle ()
3059 PROTOTYPE:
1924 CODE: 3060 CODE:
1925 RETVAL = cctx_idle; 3061 RETVAL = cctx_idle;
1926 OUTPUT: 3062 OUTPUT:
1927 RETVAL 3063 RETVAL
1928 3064
1929void 3065void
1930list () 3066list ()
3067 PROTOTYPE:
1931 PPCODE: 3068 PPCODE:
1932{ 3069{
1933 struct coro *coro; 3070 struct coro *coro;
1934 for (coro = coro_first; coro; coro = coro->next) 3071 for (coro = coro_first; coro; coro = coro->next)
1935 if (coro->hv) 3072 if (coro->hv)
… …
1942 eval = 1 3079 eval = 1
1943 CODE: 3080 CODE:
1944{ 3081{
1945 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3082 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1946 { 3083 {
1947 struct coro temp; 3084 struct coro *current = SvSTATE_current;
1948 3085
1949 if (!(coro->flags & CF_RUNNING)) 3086 if (current != coro)
1950 { 3087 {
1951 PUTBACK; 3088 PUTBACK;
1952 save_perl (aTHX_ &temp); 3089 save_perl (aTHX_ current);
1953 load_perl (aTHX_ coro); 3090 load_perl (aTHX_ coro);
3091 SPAGAIN;
1954 } 3092 }
1955 3093
1956 {
1957 dSP;
1958 ENTER;
1959 SAVETMPS;
1960 PUTBACK;
1961 PUSHSTACK; 3094 PUSHSTACK;
3095
1962 PUSHMARK (SP); 3096 PUSHMARK (SP);
3097 PUTBACK;
1963 3098
1964 if (ix) 3099 if (ix)
1965 eval_sv (coderef, 0); 3100 eval_sv (coderef, 0);
1966 else 3101 else
1967 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3102 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1968 3103
1969 POPSTACK; 3104 POPSTACK;
1970 SPAGAIN; 3105 SPAGAIN;
1971 FREETMPS;
1972 LEAVE;
1973 PUTBACK;
1974 }
1975 3106
1976 if (!(coro->flags & CF_RUNNING)) 3107 if (current != coro)
1977 { 3108 {
3109 PUTBACK;
1978 save_perl (aTHX_ coro); 3110 save_perl (aTHX_ coro);
1979 load_perl (aTHX_ &temp); 3111 load_perl (aTHX_ current);
1980 SPAGAIN; 3112 SPAGAIN;
1981 } 3113 }
1982 } 3114 }
1983} 3115}
1984 3116
… …
1988 ALIAS: 3120 ALIAS:
1989 is_ready = CF_READY 3121 is_ready = CF_READY
1990 is_running = CF_RUNNING 3122 is_running = CF_RUNNING
1991 is_new = CF_NEW 3123 is_new = CF_NEW
1992 is_destroyed = CF_DESTROYED 3124 is_destroyed = CF_DESTROYED
3125 is_suspended = CF_SUSPENDED
1993 CODE: 3126 CODE:
1994 RETVAL = boolSV (coro->flags & ix); 3127 RETVAL = boolSV (coro->flags & ix);
1995 OUTPUT: 3128 OUTPUT:
1996 RETVAL 3129 RETVAL
1997 3130
1998void 3131void
3132throw (Coro::State self, SV *throw = &PL_sv_undef)
3133 PROTOTYPE: $;$
3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
3138 SvREFCNT_dec (*throwp);
3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
3141
3142void
1999api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3144 PROTOTYPE: $;$
3145 C_ARGS: aTHX_ coro, flags
2000 3146
2001SV * 3147SV *
2002has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
2003 PROTOTYPE: $ 3149 PROTOTYPE: $
2004 CODE: 3150 CODE:
2005 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2006 OUTPUT: 3153 OUTPUT:
2007 RETVAL 3154 RETVAL
2008 3155
2009int 3156int
2010is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
2012 CODE: 3159 CODE:
2013 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3160 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2014 OUTPUT: 3161 OUTPUT:
2015 RETVAL 3162 RETVAL
2016 3163
2017IV 3164UV
2018rss (Coro::State coro) 3165rss (Coro::State coro)
2019 PROTOTYPE: $ 3166 PROTOTYPE: $
2020 ALIAS: 3167 ALIAS:
2021 usecount = 1 3168 usecount = 1
2022 CODE: 3169 CODE:
… …
2028 OUTPUT: 3175 OUTPUT:
2029 RETVAL 3176 RETVAL
2030 3177
2031void 3178void
2032force_cctx () 3179force_cctx ()
3180 PROTOTYPE:
2033 CODE: 3181 CODE:
2034 struct coro *coro = SvSTATE (coro_current);
2035 coro->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2036 3183
2037void 3184void
2038swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2039 PROTOTYPE: $ 3186 PROTOTYPE: $
2040 ALIAS: 3187 ALIAS:
2041 swap_defav = 1 3188 swap_defav = 1
2042 CODE: 3189 CODE:
2043 if (!self->slot) 3190 if (!self->slot)
2044 croak ("cannot swap state with coroutine that has no saved state"); 3191 croak ("cannot swap state with coroutine that has no saved state,");
2045 else 3192 else
2046 { 3193 {
2047 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3194 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2048 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2049 3196
2050 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2051 } 3198 }
2052 3199
3200void
3201cancel (Coro::State self)
3202 CODE:
3203 coro_state_destroy (aTHX_ self);
3204 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3205
3206
2053MODULE = Coro::State PACKAGE = Coro 3207MODULE = Coro::State PACKAGE = Coro
2054 3208
2055BOOT: 3209BOOT:
2056{ 3210{
2057 int i; 3211 int i;
2058 3212
2059 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2060 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3213 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2061 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3214 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2062 3215 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3216 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2063 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3217 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2064 SvREADONLY_on (coro_current); 3218 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3219 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3220 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3221 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3222
3223 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3224 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3225 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3226 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2065 3227
2066 coro_stash = gv_stashpv ("Coro", TRUE); 3228 coro_stash = gv_stashpv ("Coro", TRUE);
2067 3229
2068 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3230 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2069 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3231 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2074 3236
2075 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3237 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2076 coro_ready[i] = newAV (); 3238 coro_ready[i] = newAV ();
2077 3239
2078 { 3240 {
2079 SV *sv = perl_get_sv ("Coro::API", TRUE); 3241 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2080 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2081 3242
2082 coroapi.schedule = api_schedule; 3243 coroapi.schedule = api_schedule;
3244 coroapi.schedule_to = api_schedule_to;
2083 coroapi.cede = api_cede; 3245 coroapi.cede = api_cede;
2084 coroapi.cede_notself = api_cede_notself; 3246 coroapi.cede_notself = api_cede_notself;
2085 coroapi.ready = api_ready; 3247 coroapi.ready = api_ready;
2086 coroapi.is_ready = api_is_ready; 3248 coroapi.is_ready = api_is_ready;
2087 coroapi.nready = &coro_nready; 3249 coroapi.nready = coro_nready;
2088 coroapi.current = coro_current; 3250 coroapi.current = coro_current;
2089 3251
2090 GCoroAPI = &coroapi; 3252 /*GCoroAPI = &coroapi;*/
2091 sv_setiv (sv, (IV)&coroapi); 3253 sv_setiv (sv, (IV)&coroapi);
2092 SvREADONLY_on (sv); 3254 SvREADONLY_on (sv);
2093 } 3255 }
2094} 3256}
3257
3258void
3259terminate (...)
3260 CODE:
3261 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3262
3263void
3264schedule (...)
3265 CODE:
3266 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3267
3268void
3269schedule_to (...)
3270 CODE:
3271 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3272
3273void
3274cede_to (...)
3275 CODE:
3276 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3277
3278void
3279cede (...)
3280 CODE:
3281 CORO_EXECUTE_SLF_XS (slf_init_cede);
3282
3283void
3284cede_notself (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2095 3287
2096void 3288void
2097_set_current (SV *current) 3289_set_current (SV *current)
2098 PROTOTYPE: $ 3290 PROTOTYPE: $
2099 CODE: 3291 CODE:
… …
2102 3294
2103void 3295void
2104_set_readyhook (SV *hook) 3296_set_readyhook (SV *hook)
2105 PROTOTYPE: $ 3297 PROTOTYPE: $
2106 CODE: 3298 CODE:
2107 LOCK;
2108 SvREFCNT_dec (coro_readyhook); 3299 SvREFCNT_dec (coro_readyhook);
2109 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3300 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2110 UNLOCK;
2111 3301
2112int 3302int
2113prio (Coro::State coro, int newprio = 0) 3303prio (Coro::State coro, int newprio = 0)
3304 PROTOTYPE: $;$
2114 ALIAS: 3305 ALIAS:
2115 nice = 1 3306 nice = 1
2116 CODE: 3307 CODE:
2117{ 3308{
2118 RETVAL = coro->prio; 3309 RETVAL = coro->prio;
… …
2133 3324
2134SV * 3325SV *
2135ready (SV *self) 3326ready (SV *self)
2136 PROTOTYPE: $ 3327 PROTOTYPE: $
2137 CODE: 3328 CODE:
2138 RETVAL = boolSV (api_ready (self)); 3329 RETVAL = boolSV (api_ready (aTHX_ self));
2139 OUTPUT: 3330 OUTPUT:
2140 RETVAL 3331 RETVAL
2141 3332
2142int 3333int
2143nready (...) 3334nready (...)
… …
2146 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2147 OUTPUT: 3338 OUTPUT:
2148 RETVAL 3339 RETVAL
2149 3340
2150void 3341void
2151throw (Coro::State self, SV *throw = &PL_sv_undef) 3342suspend (Coro::State self)
2152 PROTOTYPE: $;$ 3343 PROTOTYPE: $
2153 CODE: 3344 CODE:
2154 SvREFCNT_dec (self->throw); 3345 self->flags |= CF_SUSPENDED;
2155 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2156 3346
2157# for async_pool speedup
2158void 3347void
2159_pool_1 (SV *cb) 3348resume (Coro::State self)
3349 PROTOTYPE: $
2160 CODE: 3350 CODE:
2161{ 3351 self->flags &= ~CF_SUSPENDED;
2162 struct coro *coro = SvSTATE (coro_current);
2163 HV *hv = (HV *)SvRV (coro_current);
2164 AV *defav = GvAV (PL_defgv);
2165 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2166 AV *invoke_av;
2167 int i, len;
2168 3352
2169 if (!invoke) 3353void
3354_pool_handler (...)
3355 CODE:
3356 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3357
3358void
3359async_pool (SV *cv, ...)
3360 PROTOTYPE: &@
3361 PPCODE:
3362{
3363 HV *hv = (HV *)av_pop (av_async_pool);
3364 AV *av = newAV ();
3365 SV *cb = ST (0);
3366 int i;
3367
3368 av_extend (av, items - 2);
3369 for (i = 1; i < items; ++i)
3370 av_push (av, SvREFCNT_inc_NN (ST (i)));
3371
3372 if ((SV *)hv == &PL_sv_undef)
2170 { 3373 {
2171 SV *old = PL_diehook; 3374 PUSHMARK (SP);
2172 PL_diehook = 0; 3375 EXTEND (SP, 2);
2173 SvREFCNT_dec (old); 3376 PUSHs (sv_Coro);
2174 croak ("\3async_pool terminate\2\n"); 3377 PUSHs ((SV *)cv_pool_handler);
3378 PUTBACK;
3379 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3380 SPAGAIN;
3381
3382 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2175 } 3383 }
2176 3384
2177 SvREFCNT_dec (coro->saved_deffh);
2178 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2179
2180 hv_store (hv, "desc", sizeof ("desc") - 1,
2181 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2182
2183 invoke_av = (AV *)SvRV (invoke);
2184 len = av_len (invoke_av);
2185
2186 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2187
2188 if (len > 0)
2189 { 3385 {
2190 av_fill (defav, len - 1); 3386 struct coro *coro = SvSTATE_hv (hv);
2191 for (i = 0; i < len; ++i) 3387
2192 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3388 assert (!coro->invoke_cb);
3389 assert (!coro->invoke_av);
3390 coro->invoke_cb = SvREFCNT_inc (cb);
3391 coro->invoke_av = av;
2193 } 3392 }
2194 3393
3394 api_ready (aTHX_ (SV *)hv);
3395
3396 if (GIMME_V != G_VOID)
3397 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3398 else
2195 SvREFCNT_dec (invoke); 3399 SvREFCNT_dec (hv);
2196} 3400}
2197 3401
2198void 3402SV *
2199_pool_2 (SV *cb) 3403rouse_cb ()
3404 PROTOTYPE:
2200 CODE: 3405 CODE:
2201{ 3406 RETVAL = coro_new_rouse_cb (aTHX);
2202 struct coro *coro = SvSTATE (coro_current);
2203
2204 sv_setsv (cb, &PL_sv_undef);
2205
2206 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2207 coro->saved_deffh = 0;
2208
2209 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2210 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2211 {
2212 SV *old = PL_diehook;
2213 PL_diehook = 0;
2214 SvREFCNT_dec (old);
2215 croak ("\3async_pool terminate\2\n");
2216 }
2217
2218 av_clear (GvAV (PL_defgv));
2219 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2220 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2221
2222 coro->prio = 0;
2223
2224 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2225 api_trace (coro_current, 0);
2226
2227 av_push (av_async_pool, newSVsv (coro_current));
2228}
2229
2230#if 0
2231
2232void
2233_generator_call (...)
2234 PROTOTYPE: @
2235 PPCODE:
2236 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2237 xxxx
2238 abort ();
2239
2240SV *
2241gensub (SV *sub, ...)
2242 PROTOTYPE: &;@
2243 CODE:
2244{
2245 struct coro *coro;
2246 MAGIC *mg;
2247 CV *xcv;
2248 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2249 int i;
2250
2251 CvGV (ncv) = CvGV (cv);
2252 CvFILE (ncv) = CvFILE (cv);
2253
2254 Newz (0, coro, 1, struct coro);
2255 coro->args = newAV ();
2256 coro->flags = CF_NEW;
2257
2258 av_extend (coro->args, items - 1);
2259 for (i = 1; i < items; i++)
2260 av_push (coro->args, newSVsv (ST (i)));
2261
2262 CvISXSUB_on (ncv);
2263 CvXSUBANY (ncv).any_ptr = (void *)coro;
2264
2265 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2266
2267 CvXSUB (ncv) = CvXSUB (xcv);
2268 CvANON_on (ncv);
2269
2270 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2271 RETVAL = newRV_noinc ((SV *)ncv);
2272}
2273 OUTPUT: 3407 OUTPUT:
2274 RETVAL 3408 RETVAL
2275 3409
2276#endif
2277
2278
2279MODULE = Coro::State PACKAGE = Coro::AIO
2280
2281void 3410void
2282_get_state (SV *self) 3411rouse_wait (...)
3412 PROTOTYPE: ;$
2283 PPCODE: 3413 PPCODE:
2284{ 3414 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2285 AV *defav = GvAV (PL_defgv);
2286 AV *av = newAV ();
2287 int i;
2288 SV *data_sv = newSV (sizeof (struct io_state));
2289 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2290 SvCUR_set (data_sv, sizeof (struct io_state));
2291 SvPOK_only (data_sv);
2292
2293 data->errorno = errno;
2294 data->laststype = PL_laststype;
2295 data->laststatval = PL_laststatval;
2296 data->statcache = PL_statcache;
2297
2298 av_extend (av, AvFILLp (defav) + 1 + 1);
2299
2300 for (i = 0; i <= AvFILLp (defav); ++i)
2301 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2302
2303 av_push (av, data_sv);
2304
2305 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2306
2307 api_ready (self);
2308}
2309 3415
2310void 3416void
2311_set_state (SV *state) 3417on_enter (SV *block)
3418 ALIAS:
3419 on_leave = 1
2312 PROTOTYPE: $ 3420 PROTOTYPE: &
3421 CODE:
3422{
3423 struct coro *coro = SvSTATE_current;
3424 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3425
3426 block = (SV *)coro_sv_2cv (aTHX_ block);
3427
3428 if (!*avp)
3429 *avp = newAV ();
3430
3431 av_push (*avp, SvREFCNT_inc (block));
3432
3433 if (!ix)
3434 on_enterleave_call (aTHX_ block);
3435
3436 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3437 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3438 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3439}
3440
3441
3442MODULE = Coro::State PACKAGE = PerlIO::cede
3443
3444BOOT:
3445 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3446
3447
3448MODULE = Coro::State PACKAGE = Coro::Semaphore
3449
3450SV *
3451new (SV *klass, SV *count = 0)
3452 CODE:
3453 RETVAL = sv_bless (
3454 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3455 GvSTASH (CvGV (cv))
3456 );
3457 OUTPUT:
3458 RETVAL
3459
3460# helper for Coro::Channel and others
3461SV *
3462_alloc (int count)
3463 CODE:
3464 RETVAL = coro_waitarray_new (aTHX_ count);
3465 OUTPUT:
3466 RETVAL
3467
3468SV *
3469count (SV *self)
3470 CODE:
3471 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3472 OUTPUT:
3473 RETVAL
3474
3475void
3476up (SV *self, int adjust = 1)
3477 ALIAS:
3478 adjust = 1
3479 CODE:
3480 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3481
3482void
3483down (...)
3484 CODE:
3485 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3486
3487void
3488wait (...)
3489 CODE:
3490 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3491
3492void
3493try (SV *self)
3494 PPCODE:
3495{
3496 AV *av = (AV *)SvRV (self);
3497 SV *count_sv = AvARRAY (av)[0];
3498 IV count = SvIVX (count_sv);
3499
3500 if (count > 0)
3501 {
3502 --count;
3503 SvIVX (count_sv) = count;
3504 XSRETURN_YES;
3505 }
3506 else
3507 XSRETURN_NO;
3508}
3509
3510void
3511waiters (SV *self)
3512 PPCODE:
3513{
3514 AV *av = (AV *)SvRV (self);
3515 int wcount = AvFILLp (av) + 1 - 1;
3516
3517 if (GIMME_V == G_SCALAR)
3518 XPUSHs (sv_2mortal (newSViv (wcount)));
3519 else
3520 {
3521 int i;
3522 EXTEND (SP, wcount);
3523 for (i = 1; i <= wcount; ++i)
3524 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3525 }
3526}
3527
3528MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3529
3530void
3531_may_delete (SV *sem, int count, int extra_refs)
2313 PPCODE: 3532 PPCODE:
2314{ 3533{
2315 AV *av = (AV *)SvRV (state); 3534 AV *av = (AV *)SvRV (sem);
2316 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2317 int i;
2318 3535
2319 errno = data->errorno; 3536 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2320 PL_laststype = data->laststype; 3537 && AvFILLp (av) == 0 /* no waiters, just count */
2321 PL_laststatval = data->laststatval; 3538 && SvIV (AvARRAY (av)[0]) == count)
2322 PL_statcache = data->statcache; 3539 XSRETURN_YES;
2323 3540
3541 XSRETURN_NO;
3542}
3543
3544MODULE = Coro::State PACKAGE = Coro::Signal
3545
3546SV *
3547new (SV *klass)
3548 CODE:
3549 RETVAL = sv_bless (
3550 coro_waitarray_new (aTHX_ 0),
3551 GvSTASH (CvGV (cv))
3552 );
3553 OUTPUT:
3554 RETVAL
3555
3556void
3557wait (...)
3558 CODE:
3559 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3560
3561void
3562broadcast (SV *self)
3563 CODE:
3564{
3565 AV *av = (AV *)SvRV (self);
3566 coro_signal_wake (aTHX_ av, AvFILLp (av));
3567}
3568
3569void
3570send (SV *self)
3571 CODE:
3572{
3573 AV *av = (AV *)SvRV (self);
3574
2324 EXTEND (SP, AvFILLp (av)); 3575 if (AvFILLp (av))
2325 for (i = 0; i < AvFILLp (av); ++i) 3576 coro_signal_wake (aTHX_ av, 1);
2326 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3577 else
3578 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2327} 3579}
3580
3581IV
3582awaited (SV *self)
3583 CODE:
3584 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3585 OUTPUT:
3586 RETVAL
2328 3587
2329 3588
2330MODULE = Coro::State PACKAGE = Coro::AnyEvent 3589MODULE = Coro::State PACKAGE = Coro::AnyEvent
2331 3590
2332BOOT: 3591BOOT:
2333 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3592 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2334 3593
2335SV * 3594void
2336_schedule (...) 3595_schedule (...)
2337 PROTOTYPE: @
2338 CODE: 3596 CODE:
2339{ 3597{
2340 static int incede; 3598 static int incede;
2341 3599
2342 api_cede_notself (); 3600 api_cede_notself (aTHX);
2343 3601
2344 ++incede; 3602 ++incede;
2345 while (coro_nready >= incede && api_cede ()) 3603 while (coro_nready >= incede && api_cede (aTHX))
2346 ; 3604 ;
2347 3605
2348 sv_setsv (sv_activity, &PL_sv_undef); 3606 sv_setsv (sv_activity, &PL_sv_undef);
2349 if (coro_nready >= incede) 3607 if (coro_nready >= incede)
2350 { 3608 {
2351 PUSHMARK (SP); 3609 PUSHMARK (SP);
2352 PUTBACK; 3610 PUTBACK;
2353 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3611 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2354 SPAGAIN;
2355 } 3612 }
2356 3613
2357 --incede; 3614 --incede;
2358} 3615}
2359 3616
2360 3617
2361MODULE = Coro::State PACKAGE = PerlIO::cede 3618MODULE = Coro::State PACKAGE = Coro::AIO
2362 3619
2363BOOT: 3620void
2364 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3621_register (char *target, char *proto, SV *req)
3622 CODE:
3623{
3624 CV *req_cv = coro_sv_2cv (aTHX_ req);
3625 /* newXSproto doesn't return the CV on 5.8 */
3626 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3627 sv_setpv ((SV *)slf_cv, proto);
3628 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3629}
3630

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