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Comparing Coro/Coro/State.xs (file contents):
Revision 1.253 by root, Fri Nov 7 20:12:26 2008 UTC vs.
Revision 1.327 by root, Mon Nov 24 06:07:16 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 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_main_cv == Nullcv)
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? */
166 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 174static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
174static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 184static SV *rv_diehook;
177static SV *rv_warnhook; 185static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
179 187
180/* async_pool helper stuff */ 188/* async_pool helper stuff */
181static SV *sv_pool_rss; 189static SV *sv_pool_rss;
182static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
183static 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;
184 196
185/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
186static SV *sv_activity; 198static SV *sv_activity;
187 199
188static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 210};
199 211
200/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 213typedef struct coro_cctx
214{
202 struct coro_cctx *next; 215 struct coro_cctx *next;
203 216
204 /* the stack */ 217 /* the stack */
205 void *sptr; 218 void *sptr;
206 size_t ssize; 219 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 224 JMPENV *top_env;
212 coro_context cctx; 225 coro_context cctx;
213 226
227 U32 gen;
214#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
219 237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
225}; 243};
226 244
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 246typedef struct
247{
229 SV *defsv; 248 SV *defsv;
230 AV *defav; 249 AV *defav;
231 SV *errsv; 250 SV *errsv;
232 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
233#define VAR(name,type) type name; 253#define VAR(name,type) type name;
234# include "state.h" 254# include "state.h"
235#undef VAR 255#undef VAR
236} perl_slots; 256} perl_slots;
237 257
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 259
240/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
241struct coro { 261struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 263 coro_cctx *cctx;
244 264
245 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 267 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
248 269
270 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
253 276
254 /* statistics */ 277 /* statistics */
255 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
256 279
257 /* coro process data */ 280 /* coro process data */
258 int prio; 281 int prio;
259 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
260 284
261 /* async_pool */ 285 /* async_pool */
262 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
263 289
264 /* linked list */ 290 /* linked list */
265 struct coro *next, *prev; 291 struct coro *next, *prev;
266}; 292};
267 293
268typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
270 301
271/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
272 303
273#define PRIO_MAX 3 304#define PRIO_MAX 3
274#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 309#define PRIO_MIN -4
279 310
280/* for Coro.pm */ 311/* for Coro.pm */
281static SV *coro_current; 312static SV *coro_current;
282static SV *coro_readyhook; 313static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
286 318
287/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
288 320
289static SV * 321static SV *
290coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
314 get_hv (name, create); 346 get_hv (name, create);
315#endif 347#endif
316 return get_hv (name, create); 348 return get_hv (name, create);
317} 349}
318 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
319static AV * 360static AV *
320coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
321{ 362{
322 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
324 365
325 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 417
377 return 0; 418 return 0;
378} 419}
379 420
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
381#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 423
383static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 425 0, 0, 0, 0,
385 coro_cv_free 426 coro_cv_free
386}; 427};
387 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
388#define CORO_MAGIC(sv, type) \ 434#define CORO_MAGIC(sv, type) \
389 SvMAGIC (sv) \ 435 (expect_true (SvMAGIC (sv)) \
390 ? SvMAGIC (sv)->mg_type == type \ 436 ? CORO_MAGIC_NN (sv, type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0 437 : 0)
394 438
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
397 441
398static struct coro * 442INLINE struct coro *
399SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
400{ 444{
401 HV *stash; 445 HV *stash;
402 MAGIC *mg; 446 MAGIC *mg;
403 447
… …
418 mg = CORO_MAGIC_state (coro); 462 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
420} 464}
421 465
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
423 471
424/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
425static void 473static void
426get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
427{ 475{
… …
433 else 481 else
434 { 482 {
435#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 484 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 485 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
442#else 490#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 492#endif
445 } 493 }
446} 494}
447 495
448static void 496static void
… …
470 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
471 c->slot = 0; 519 c->slot = 0;
472 520
473 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
474 522
475 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
479 528
480 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
481 # include "state.h" 530 # include "state.h"
482 #undef VAR 531 #undef VAR
483 532
… …
494 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
495 } 544 }
496 545
497 PUTBACK; 546 PUTBACK;
498 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
499} 551}
500 552
501static void 553static void
502save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
503{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
504 { 559 {
505 dSP; 560 dSP;
506 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
563 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
564 619
565 { 620 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567 622
568 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
570 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
572 628
573 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
574 # include "state.h" 630 # include "state.h"
575 #undef VAR 631 #undef VAR
576 } 632 }
577} 633}
578 634
579/* 635/*
580 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
584 */ 640 */
585#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
587#else 643#else
588static void 644static void
589coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
590{ 646{
591 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 711 Safefree (PL_retstack);
656#endif 712#endif
657} 713}
658 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
659static size_t 724static size_t
660coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
661{ 726{
662 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
663 728
664 if (coro->mainstack) 729 if (coro->mainstack)
665 { 730 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
670 { 732 {
671 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
672 734 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 735 #undef SYM
676 } 736 }
677 else 737 else
678 slot = coro->slot;
679
680 if (slot)
681 { 738 {
682 rss += sizeof (slot->curstackinfo); 739 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 741 #undef SYM
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 } 742 }
694 } 743 }
695 744
696 return rss; 745 return rss;
697} 746}
… …
787 836
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 838}
790 839
791static void 840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
793{ 863{
794 /* 864 /*
795 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
796 */ 866 */
… …
798 868
799 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
803 PL_curpm = 0; 876 PL_curpm = 0;
804 PL_curpad = 0; 877 PL_curpad = 0;
805 PL_localizing = 0; 878 PL_localizing = 0;
806 PL_dirty = 0; 879 PL_dirty = 0;
807 PL_restartop = 0; 880 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0; 882 PL_parser = 0;
810#endif 883#endif
884 PL_hints = 0;
811 885
812 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815 889
816 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
820 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 897
823 { 898 {
824 dSP; 899 dSP;
825 LOGOP myop; 900 UNOP myop;
826 901
827 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
830 906
831 PUSHMARK (SP); 907 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 909 PUTBACK;
834 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 912 }
838 913
839 /* this newly created coroutine might be run on an existing cctx which most 914 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 916 */
844 ENTER; 917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
845} 930}
846 931
847static void 932static void
848coro_destruct (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
849{ 934{
… …
868 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
869 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
870 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
871 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
873 959
874 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
876 962
877 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
879 967
880 coro_destruct_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
881} 969}
882 970
883static void 971INLINE void
884free_coro_mortal (pTHX) 972free_coro_mortal (pTHX)
885{ 973{
886 if (expect_true (coro_mortal)) 974 if (expect_true (coro_mortal))
887 { 975 {
888 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
… …
893static int 981static int
894runops_trace (pTHX) 982runops_trace (pTHX)
895{ 983{
896 COP *oldcop = 0; 984 COP *oldcop = 0;
897 int oldcxix = -2; 985 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 986
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 988 {
903 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
904 990
905 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
906 { 992 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 994 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 996 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
912 SV **cb; 998 SV **cb;
… …
949 1035
950 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
951 { 1037 {
952 SV **cb; 1038 SV **cb;
953 1039
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1041 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1043
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1045 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1046 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
964 1049
965 if (isGV (gv)) 1050 if (isGV (gv))
… …
970 SAVETMPS; 1055 SAVETMPS;
971 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
972 PUSHMARK (SP); 1057 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1059 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1061 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1064 SPAGAIN;
980 FREETMPS; 1065 FREETMPS;
… …
983 } 1068 }
984 1069
985 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
986 } 1071 }
987 1072
988 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1074 {
990 dSP; 1075 dSP;
991 1076
992 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1078 ENTER;
… …
1012 1097
1013 TAINT_NOT; 1098 TAINT_NOT;
1014 return 0; 1099 return 0;
1015} 1100}
1016 1101
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1103
1019/* during execution of a perl program */ 1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1119static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1022{ 1121{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1027 1123
1028 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1030 1126
1031 Zero (&myop, 1, LOGOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1131
1035 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1134
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1137}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138
1042 SPAGAIN; 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
1043} 1144}
1044 1145
1045/* 1146/*
1046 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1148 */
1048static void 1149static void
1049cctx_run (void *arg) 1150cctx_run (void *arg)
1050{ 1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
1051 dTHX; 1158 dTHX;
1052 1159
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1160 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1161 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
1058 1163
1059 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1061 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1065
1066 /* 1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1177
1178 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1179 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1180 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1181 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept
1072 */ 1184 */
1073 PL_top_env = main_top_env; 1185 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1187 }
1075} 1188}
1076 1189
1077static coro_cctx * 1190static coro_cctx *
1078cctx_new () 1191cctx_new ()
1079{ 1192{
1080 coro_cctx *cctx; 1193 coro_cctx *cctx;
1194
1195 ++cctx_count;
1196 New (0, cctx, 1, coro_cctx);
1197
1198 cctx->gen = cctx_gen;
1199 cctx->flags = 0;
1200 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1201
1202 return cctx;
1203}
1204
1205/* create a new cctx only suitable as source */
1206static coro_cctx *
1207cctx_new_empty ()
1208{
1209 coro_cctx *cctx = cctx_new ();
1210
1211 cctx->sptr = 0;
1212 coro_create (&cctx->cctx, 0, 0, 0, 0);
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx suitable as destination/running a perl interpreter */
1218static coro_cctx *
1219cctx_new_run ()
1220{
1221 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1222 void *stack_start;
1082 size_t stack_size; 1223 size_t stack_size;
1083 1224
1084 ++cctx_count;
1085 Newz (0, cctx, 1, coro_cctx);
1086
1087#if HAVE_MMAP 1225#if HAVE_MMAP
1088 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1226 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1089 /* mmap supposedly does allocate-on-write for us */ 1227 /* mmap supposedly does allocate-on-write for us */
1090 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1091 1229
1092 if (cctx->sptr != (void *)-1) 1230 if (cctx->sptr != (void *)-1)
1093 { 1231 {
1094# if CORO_STACKGUARD 1232 #if CORO_STACKGUARD
1095 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1096# endif 1234 #endif
1097 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1098 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1099 cctx->flags |= CC_MAPPED; 1237 cctx->flags |= CC_MAPPED;
1100 } 1238 }
1101 else 1239 else
1102#endif 1240#endif
1103 { 1241 {
1104 cctx->ssize = coro_stacksize * (long)sizeof (long); 1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1105 New (0, cctx->sptr, coro_stacksize, long); 1243 New (0, cctx->sptr, cctx_stacksize, long);
1106 1244
1107 if (!cctx->sptr) 1245 if (!cctx->sptr)
1108 { 1246 {
1109 perror ("FATAL: unable to allocate stack for coroutine"); 1247 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1110 _exit (EXIT_FAILURE); 1248 _exit (EXIT_FAILURE);
1111 } 1249 }
1112 1250
1113 stack_start = cctx->sptr; 1251 stack_start = cctx->sptr;
1114 stack_size = cctx->ssize; 1252 stack_size = cctx->ssize;
1115 } 1253 }
1116 1254
1117 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1255 #if CORO_USE_VALGRIND
1256 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1257 #endif
1258
1118 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1259 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1119 1260
1120 return cctx; 1261 return cctx;
1121} 1262}
1122 1263
… …
1124cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
1125{ 1266{
1126 if (!cctx) 1267 if (!cctx)
1127 return; 1268 return;
1128 1269
1270 assert (cctx != cctx_current);//D temporary
1271
1129 --cctx_count; 1272 --cctx_count;
1130 coro_destroy (&cctx->cctx); 1273 coro_destroy (&cctx->cctx);
1131 1274
1132 /* coro_transfer creates new, empty cctx's */ 1275 /* coro_transfer creates new, empty cctx's */
1133 if (cctx->sptr) 1276 if (cctx->sptr)
1134 { 1277 {
1135#if CORO_USE_VALGRIND 1278 #if CORO_USE_VALGRIND
1136 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1137#endif 1280 #endif
1138 1281
1139#if HAVE_MMAP 1282#if HAVE_MMAP
1140 if (cctx->flags & CC_MAPPED) 1283 if (cctx->flags & CC_MAPPED)
1141 munmap (cctx->sptr, cctx->ssize); 1284 munmap (cctx->sptr, cctx->ssize);
1142 else 1285 else
… …
1146 1289
1147 Safefree (cctx); 1290 Safefree (cctx);
1148} 1291}
1149 1292
1150/* wether this cctx should be destructed */ 1293/* wether this cctx should be destructed */
1151#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1294#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1152 1295
1153static coro_cctx * 1296static coro_cctx *
1154cctx_get (pTHX) 1297cctx_get (pTHX)
1155{ 1298{
1156 while (expect_true (cctx_first)) 1299 while (expect_true (cctx_first))
… …
1163 return cctx; 1306 return cctx;
1164 1307
1165 cctx_destroy (cctx); 1308 cctx_destroy (cctx);
1166 } 1309 }
1167 1310
1168 return cctx_new (); 1311 return cctx_new_run ();
1169} 1312}
1170 1313
1171static void 1314static void
1172cctx_put (coro_cctx *cctx) 1315cctx_put (coro_cctx *cctx)
1173{ 1316{
1174 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1317 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1175 1318
1176 /* free another cctx if overlimit */ 1319 /* free another cctx if overlimit */
1177 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1320 if (expect_false (cctx_idle >= cctx_max_idle))
1178 { 1321 {
1179 coro_cctx *first = cctx_first; 1322 coro_cctx *first = cctx_first;
1180 cctx_first = first->next; 1323 cctx_first = first->next;
1181 --cctx_idle; 1324 --cctx_idle;
1182 1325
… …
1191/** coroutine switching *****************************************************/ 1334/** coroutine switching *****************************************************/
1192 1335
1193static void 1336static void
1194transfer_check (pTHX_ struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
1195{ 1338{
1339 /* TODO: throwing up here is considered harmful */
1340
1196 if (expect_true (prev != next)) 1341 if (expect_true (prev != next))
1197 { 1342 {
1198 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1199 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1200 1345
1201 if (expect_false (next->flags & CF_RUNNING)) 1346 if (expect_false (next->flags & CF_RUNNING))
1202 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1203 1348
1204 if (expect_false (next->flags & CF_DESTROYED)) 1349 if (expect_false (next->flags & CF_DESTROYED))
1205 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1206 1351
1207#if !PERL_VERSION_ATLEAST (5,10,0) 1352#if !PERL_VERSION_ATLEAST (5,10,0)
1208 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1209 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1210#endif 1355#endif
1211 } 1356 }
1212} 1357}
1213 1358
1214/* always use the TRANSFER macro */ 1359/* always use the TRANSFER macro */
1215static void NOINLINE 1360static void NOINLINE /* noinline so we have a fixed stackframe */
1216transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1217{ 1362{
1218 dSTACKLEVEL; 1363 dSTACKLEVEL;
1219 1364
1220 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
1221 if (expect_false (!next)) 1366 if (expect_false (!prev))
1222 { 1367 {
1223 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1368 cctx_current->idle_sp = STACKLEVEL;
1224 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1225 } 1370 }
1226 else if (expect_true (prev != next)) 1371 else if (expect_true (prev != next))
1227 { 1372 {
1228 static volatile int has_throw;
1229 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
1230 1374
1231 if (expect_false (prev->flags & CF_NEW)) 1375 if (expect_false (prev->flags & CF_NEW))
1232 { 1376 {
1233 /* create a new empty/source context */ 1377 /* create a new empty/source context */
1234 ++cctx_count;
1235 New (0, prev->cctx, 1, coro_cctx);
1236 prev->cctx->sptr = 0;
1237 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1238
1239 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
1240 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
1241 } 1380 }
1242 1381
1243 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
1244 next->flags |= CF_RUNNING; 1383 next->flags |= CF_RUNNING;
1245
1246 LOCK;
1247 1384
1248 /* first get rid of the old state */ 1385 /* first get rid of the old state */
1249 save_perl (aTHX_ prev); 1386 save_perl (aTHX_ prev);
1250 1387
1251 if (expect_false (next->flags & CF_NEW)) 1388 if (expect_false (next->flags & CF_NEW))
… …
1256 coro_setup (aTHX_ next); 1393 coro_setup (aTHX_ next);
1257 } 1394 }
1258 else 1395 else
1259 load_perl (aTHX_ next); 1396 load_perl (aTHX_ next);
1260 1397
1261 prev__cctx = prev->cctx; 1398 assert (!prev->cctx);//D temporary
1262 1399
1263 /* possibly "free" the cctx */ 1400 /* possibly untie and reuse the cctx */
1264 if (expect_true ( 1401 if (expect_true (
1265 prev__cctx->idle_sp == STACKLEVEL 1402 cctx_current->idle_sp == STACKLEVEL
1266 && !(prev__cctx->flags & CC_TRACE) 1403 && !(cctx_current->flags & CC_TRACE)
1267 && !force_cctx 1404 && !force_cctx
1268 )) 1405 ))
1269 { 1406 {
1270 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1271 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1272 1409
1273 prev->cctx = 0;
1274
1275 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1276 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1277 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1278 if (!next->cctx) 1413 if (expect_true (!next->cctx))
1279 next->cctx = cctx_get (aTHX); 1414 next->cctx = cctx_get (aTHX);
1280 1415
1281 cctx_put (prev__cctx); 1416 cctx_put (cctx_current);
1282 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
1283 1420
1284 ++next->usecount; 1421 ++next->usecount;
1285 1422
1286 if (expect_true (!next->cctx)) 1423 cctx_prev = cctx_current;
1287 next->cctx = cctx_get (aTHX); 1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1288 1425
1289 has_throw = !!next->throw; 1426 next->cctx = 0;
1290 1427
1291 if (expect_false (prev__cctx != next->cctx)) 1428 if (expect_false (cctx_prev != cctx_current))
1292 { 1429 {
1293 prev__cctx->top_env = PL_top_env; 1430 cctx_prev->top_env = PL_top_env;
1294 PL_top_env = next->cctx->top_env; 1431 PL_top_env = cctx_current->top_env;
1295 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1296 } 1433 }
1297 1434
1298 free_coro_mortal (aTHX); 1435 transfer_tail (aTHX);
1299 UNLOCK;
1300
1301 if (expect_false (has_throw))
1302 {
1303 struct coro *coro = SvSTATE (coro_current);
1304
1305 if (coro->throw)
1306 {
1307 SV *exception = coro->throw;
1308 coro->throw = 0;
1309 sv_setsv (ERRSV, exception);
1310 croak (0);
1311 }
1312 }
1313 } 1436 }
1314} 1437}
1315
1316struct transfer_args
1317{
1318 struct coro *prev, *next;
1319};
1320 1438
1321#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1322#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1323 1441
1324/** high level stuff ********************************************************/ 1442/** high level stuff ********************************************************/
… …
1326static int 1444static int
1327coro_state_destroy (pTHX_ struct coro *coro) 1445coro_state_destroy (pTHX_ struct coro *coro)
1328{ 1446{
1329 if (coro->flags & CF_DESTROYED) 1447 if (coro->flags & CF_DESTROYED)
1330 return 0; 1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1331 1452
1332 coro->flags |= CF_DESTROYED; 1453 coro->flags |= CF_DESTROYED;
1333 1454
1334 if (coro->flags & CF_READY) 1455 if (coro->flags & CF_READY)
1335 { 1456 {
1336 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1337 /* alternative: look through all ready queues and remove the coro */ 1458 /* alternative: look through all ready queues and remove the coro */
1338 LOCK;
1339 --coro_nready; 1459 --coro_nready;
1340 UNLOCK;
1341 } 1460 }
1342 else 1461 else
1343 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1344 1463
1345 if (coro->mainstack && coro->mainstack != main_mainstack) 1464 if (coro->mainstack && coro->mainstack != main_mainstack)
1346 { 1465 {
1347 struct coro temp; 1466 struct coro temp;
1348 1467
1349 if (coro->flags & CF_RUNNING) 1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1350 croak ("FATAL: tried to destroy currently running coroutine");
1351 1469
1352 save_perl (aTHX_ &temp); 1470 save_perl (aTHX_ &temp);
1353 load_perl (aTHX_ coro); 1471 load_perl (aTHX_ coro);
1354 1472
1355 coro_destruct (aTHX_ coro); 1473 coro_destruct (aTHX_ coro);
… …
1358 1476
1359 coro->slot = 0; 1477 coro->slot = 0;
1360 } 1478 }
1361 1479
1362 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1363 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1364 1484
1365 if (coro->next) coro->next->prev = coro->prev; 1485 if (coro->next) coro->next->prev = coro->prev;
1366 if (coro->prev) coro->prev->next = coro->next; 1486 if (coro->prev) coro->prev->next = coro->next;
1367 if (coro == coro_first) coro_first = coro->next; 1487 if (coro == coro_first) coro_first = coro->next;
1368 1488
… …
1406# define MGf_DUP 0 1526# define MGf_DUP 0
1407#endif 1527#endif
1408}; 1528};
1409 1529
1410static void 1530static void
1411prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1531prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1412{ 1532{
1413 ta->prev = SvSTATE (prev_sv); 1533 ta->prev = SvSTATE (prev_sv);
1414 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1415 TRANSFER_CHECK (*ta); 1535 TRANSFER_CHECK (*ta);
1416} 1536}
1417 1537
1418static void 1538static void
1419api_transfer (SV *prev_sv, SV *next_sv) 1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1420{ 1540{
1421 dTHX;
1422 struct transfer_args ta; 1541 struct coro_transfer_args ta;
1423 1542
1424 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1425 TRANSFER (ta, 1); 1544 TRANSFER (ta, 1);
1426} 1545}
1427 1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1428/** Coro ********************************************************************/ 1570/** Coro ********************************************************************/
1429 1571
1430static void 1572INLINE void
1431coro_enq (pTHX_ SV *coro_sv) 1573coro_enq (pTHX_ struct coro *coro)
1432{ 1574{
1433 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1434} 1576}
1435 1577
1436static SV * 1578INLINE SV *
1437coro_deq (pTHX) 1579coro_deq (pTHX)
1438{ 1580{
1439 int prio; 1581 int prio;
1440 1582
1441 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1444 1586
1445 return 0; 1587 return 0;
1446} 1588}
1447 1589
1448static int 1590static int
1449api_ready (SV *coro_sv) 1591api_ready (pTHX_ SV *coro_sv)
1450{ 1592{
1451 dTHX;
1452 struct coro *coro; 1593 struct coro *coro;
1453 SV *sv_hook; 1594 SV *sv_hook;
1454 void (*xs_hook)(void); 1595 void (*xs_hook)(void);
1455 1596
1456 if (SvROK (coro_sv))
1457 coro_sv = SvRV (coro_sv);
1458
1459 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
1460 1598
1461 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
1462 return 0; 1600 return 0;
1463 1601
1464 coro->flags |= CF_READY; 1602 coro->flags |= CF_READY;
1465 1603
1466 LOCK;
1467
1468 sv_hook = coro_nready ? 0 : coro_readyhook; 1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1469 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1470 1606
1471 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1607 coro_enq (aTHX_ coro);
1472 ++coro_nready; 1608 ++coro_nready;
1473 1609
1474 UNLOCK;
1475
1476 if (sv_hook) 1610 if (sv_hook)
1477 { 1611 {
1478 dSP; 1612 dSP;
1479 1613
1480 ENTER; 1614 ENTER;
1481 SAVETMPS; 1615 SAVETMPS;
1482 1616
1483 PUSHMARK (SP); 1617 PUSHMARK (SP);
1484 PUTBACK; 1618 PUTBACK;
1485 call_sv (sv_hook, G_DISCARD); 1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1486 SPAGAIN;
1487 1620
1488 FREETMPS; 1621 FREETMPS;
1489 LEAVE; 1622 LEAVE;
1490 } 1623 }
1491 1624
… …
1494 1627
1495 return 1; 1628 return 1;
1496} 1629}
1497 1630
1498static int 1631static int
1499api_is_ready (SV *coro_sv) 1632api_is_ready (pTHX_ SV *coro_sv)
1500{ 1633{
1501 dTHX;
1502 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1503} 1635}
1504 1636
1505static void 1637/* expects to own a reference to next->hv */
1638INLINE void
1506prepare_schedule (pTHX_ struct transfer_args *ta) 1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1507{ 1640{
1508 SV *prev_sv, *next_sv;
1509
1510 for (;;)
1511 {
1512 LOCK;
1513 next_sv = coro_deq (aTHX);
1514
1515 /* nothing to schedule: call the idle handler */
1516 if (expect_false (!next_sv))
1517 {
1518 dSP;
1519 UNLOCK;
1520
1521 ENTER;
1522 SAVETMPS;
1523
1524 PUSHMARK (SP);
1525 PUTBACK;
1526 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1527 SPAGAIN;
1528
1529 FREETMPS;
1530 LEAVE;
1531 continue;
1532 }
1533
1534 ta->next = SvSTATE (next_sv);
1535
1536 /* cannot transfer to destroyed coros, skip and look for next */
1537 if (expect_false (ta->next->flags & CF_DESTROYED))
1538 {
1539 UNLOCK;
1540 SvREFCNT_dec (next_sv);
1541 /* coro_nready is already taken care of by destroy */
1542 continue;
1543 }
1544
1545 --coro_nready;
1546 UNLOCK;
1547 break;
1548 }
1549
1550 /* free this only after the transfer */
1551 prev_sv = SvRV (coro_current); 1641 SV *prev_sv = SvRV (coro_current);
1642
1552 ta->prev = SvSTATE (prev_sv); 1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1553 TRANSFER_CHECK (*ta); 1646 TRANSFER_CHECK (*ta);
1554 assert (ta->next->flags & CF_READY); 1647
1555 ta->next->flags &= ~CF_READY;
1556 SvRV_set (coro_current, next_sv); 1648 SvRV_set (coro_current, (SV *)next->hv);
1557 1649
1558 LOCK;
1559 free_coro_mortal (aTHX); 1650 free_coro_mortal (aTHX);
1560 coro_mortal = prev_sv; 1651 coro_mortal = prev_sv;
1561 UNLOCK;
1562} 1652}
1563 1653
1564static void 1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
1658 {
1659 SV *next_sv = coro_deq (aTHX);
1660
1661 if (expect_true (next_sv))
1662 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1668 else
1669 {
1670 next->flags &= ~CF_READY;
1671 --coro_nready;
1672
1673 prepare_schedule_to (aTHX_ ta, next);
1674 break;
1675 }
1676 }
1677 else
1678 {
1679 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle)))
1682 {
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready;
1686 }
1687 else
1688 {
1689 dSP;
1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
1700 }
1701 }
1702 }
1703}
1704
1705INLINE void
1565prepare_cede (pTHX_ struct transfer_args *ta) 1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1566{ 1707{
1567 api_ready (coro_current); 1708 api_ready (aTHX_ coro_current);
1568 prepare_schedule (aTHX_ ta); 1709 prepare_schedule (aTHX_ ta);
1569} 1710}
1570 1711
1712INLINE void
1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1714{
1715 SV *prev = SvRV (coro_current);
1716
1717 if (coro_nready)
1718 {
1719 prepare_schedule (aTHX_ ta);
1720 api_ready (aTHX_ prev);
1721 }
1722 else
1723 prepare_nop (aTHX_ ta);
1724}
1725
1726static void
1727api_schedule (pTHX)
1728{
1729 struct coro_transfer_args ta;
1730
1731 prepare_schedule (aTHX_ &ta);
1732 TRANSFER (ta, 1);
1733}
1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1743}
1744
1571static int 1745static int
1572prepare_cede_notself (pTHX_ struct transfer_args *ta) 1746api_cede (pTHX)
1573{ 1747{
1574 if (coro_nready) 1748 struct coro_transfer_args ta;
1575 { 1749
1576 SV *prev = SvRV (coro_current);
1577 prepare_schedule (aTHX_ ta); 1750 prepare_cede (aTHX_ &ta);
1578 api_ready (prev); 1751
1752 if (expect_true (ta.prev != ta.next))
1753 {
1754 TRANSFER (ta, 1);
1579 return 1; 1755 return 1;
1580 } 1756 }
1581 else 1757 else
1582 return 0; 1758 return 0;
1583} 1759}
1584 1760
1585static void
1586api_schedule (void)
1587{
1588 dTHX;
1589 struct transfer_args ta;
1590
1591 prepare_schedule (aTHX_ &ta);
1592 TRANSFER (ta, 1);
1593}
1594
1595static int 1761static int
1596api_cede (void) 1762api_cede_notself (pTHX)
1597{ 1763{
1598 dTHX; 1764 if (coro_nready)
1765 {
1599 struct transfer_args ta; 1766 struct coro_transfer_args ta;
1600 1767
1601 prepare_cede (aTHX_ &ta); 1768 prepare_cede_notself (aTHX_ &ta);
1602
1603 if (expect_true (ta.prev != ta.next))
1604 {
1605 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1606 return 1; 1770 return 1;
1607 } 1771 }
1608 else 1772 else
1609 return 0; 1773 return 0;
1610} 1774}
1611 1775
1612static int 1776static void
1613api_cede_notself (void)
1614{
1615 dTHX;
1616 struct transfer_args ta;
1617
1618 if (prepare_cede_notself (aTHX_ &ta))
1619 {
1620 TRANSFER (ta, 1);
1621 return 1;
1622 }
1623 else
1624 return 0;
1625}
1626
1627static void
1628api_trace (SV *coro_sv, int flags) 1777api_trace (pTHX_ SV *coro_sv, int flags)
1629{ 1778{
1630 dTHX;
1631 struct coro *coro = SvSTATE (coro_sv); 1779 struct coro *coro = SvSTATE (coro_sv);
1632 1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1783
1633 if (flags & CC_TRACE) 1784 if (flags & CC_TRACE)
1634 { 1785 {
1635 if (!coro->cctx) 1786 if (!coro->cctx)
1636 coro->cctx = cctx_new (); 1787 coro->cctx = cctx_new_run ();
1637 else if (!(coro->cctx->flags & CC_TRACE)) 1788 else if (!(coro->cctx->flags & CC_TRACE))
1638 croak ("cannot enable tracing on coroutine with custom stack"); 1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1639 1790
1640 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1641 } 1792 }
1642 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1643 { 1794 {
… …
1648 else 1799 else
1649 coro->slot->runops = RUNOPS_DEFAULT; 1800 coro->slot->runops = RUNOPS_DEFAULT;
1650 } 1801 }
1651} 1802}
1652 1803
1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
1859
1653static int 1860static int
1654coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1655{ 1862{
1656 AV *padlist; 1863 HV *hv = (HV *)SvRV (coro_current);
1657 AV *av = (AV *)mg->mg_obj; 1864 struct coro *coro = (struct coro *)frame->data;
1658 1865
1659 abort (); 1866 if (!coro->invoke_cb)
1867 return 1; /* loop till we have invoke */
1868 else
1869 {
1870 hv_store (hv, "desc", sizeof ("desc") - 1,
1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1872
1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1874
1875 {
1876 dSP;
1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1878 PUTBACK;
1879 }
1880
1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1660 1989
1661 return 0; 1990 return 0;
1662} 1991}
1663 1992
1664static MGVTBL coro_gensub_vtbl = { 1993static void
1665 0, 0, 0, 0, 1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1666 coro_gensub_free 1995{
1667}; 1996 SV *cb;
1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
2024}
2025
2026static SV *
2027coro_new_rouse_cb (pTHX)
2028{
2029 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2033
2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */
2036
2037 SvREFCNT_dec (coro->rouse_cb);
2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2039
2040 return cb;
2041}
2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
2122 api_ready (aTHX_ SvRV (coro_current));
2123
2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2125}
2126
2127static void
2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
2171 {
2172 /* ampersand-form of call, use @_ instead of stack */
2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
2194 struct coro_transfer_args ta;
2195
2196 slf_frame.prepare (aTHX_ &ta);
2197 TRANSFER (ta, 0);
2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
2283}
1668 2284
1669/*****************************************************************************/ 2285/*****************************************************************************/
1670/* PerlIO::cede */ 2286/* PerlIO::cede */
1671 2287
1672typedef struct 2288typedef struct
… …
1700 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2316 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1701 double now = nvtime (); 2317 double now = nvtime ();
1702 2318
1703 if (now >= self->next) 2319 if (now >= self->next)
1704 { 2320 {
1705 api_cede (); 2321 api_cede (aTHX);
1706 self->next = now + self->every; 2322 self->next = now + self->every;
1707 } 2323 }
1708 2324
1709 return PerlIOBuf_flush (aTHX_ f); 2325 return PerlIOBuf_flush (aTHX_ f);
1710} 2326}
… …
1739 PerlIOBuf_get_ptr, 2355 PerlIOBuf_get_ptr,
1740 PerlIOBuf_get_cnt, 2356 PerlIOBuf_get_cnt,
1741 PerlIOBuf_set_ptrcnt, 2357 PerlIOBuf_set_ptrcnt,
1742}; 2358};
1743 2359
2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
2362
2363static SV *
2364coro_waitarray_new (pTHX_ int count)
2365{
2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
2369
2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373 /*AvARRAY (av) = ary;*/
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2375 AvMAX (av) = 1;
2376 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count);
2378
2379 return newRV_noinc ((SV *)av);
2380}
2381
2382/* semaphore */
2383
2384static void
2385coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2386{
2387 SV *count_sv = AvARRAY (av)[0];
2388 IV count = SvIVX (count_sv);
2389
2390 count += adjust;
2391 SvIVX (count_sv) = count;
2392
2393 /* now wake up as many waiters as are expected to lock */
2394 while (count > 0 && AvFILLp (av) > 0)
2395 {
2396 SV *cb;
2397
2398 /* swap first two elements so we can shift a waiter */
2399 AvARRAY (av)[0] = AvARRAY (av)[1];
2400 AvARRAY (av)[1] = count_sv;
2401 cb = av_shift (av);
2402
2403 if (SvOBJECT (cb))
2404 {
2405 api_ready (aTHX_ cb);
2406 --count;
2407 }
2408 else if (SvTYPE (cb) == SVt_PVCV)
2409 {
2410 dSP;
2411 PUSHMARK (SP);
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 }
2416
2417 SvREFCNT_dec (cb);
2418 }
2419}
2420
2421static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2423{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2426}
2427
2428static int
2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2430{
2431 AV *av = (AV *)frame->data;
2432 SV *count_sv = AvARRAY (av)[0];
2433
2434 /* if we are about to throw, don't actually acquire the lock, just throw */
2435 if (CORO_THROW)
2436 return 0;
2437 else if (SvIVX (count_sv) > 0)
2438 {
2439 SvSTATE_current->on_destroy = 0;
2440
2441 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else
2444 coro_semaphore_adjust (aTHX_ av, 0);
2445
2446 return 0;
2447 }
2448 else
2449 {
2450 int i;
2451 /* if we were woken up but can't down, we look through the whole */
2452 /* waiters list and only add us if we aren't in there already */
2453 /* this avoids some degenerate memory usage cases */
2454
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current))
2457 return 1;
2458
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2460 return 1;
2461 }
2462}
2463
2464static int
2465slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2466{
2467 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2468}
2469
2470static int
2471slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2474}
2475
2476static void
2477slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2478{
2479 AV *av = (AV *)SvRV (arg [0]);
2480
2481 if (SvIVX (AvARRAY (av)[0]) > 0)
2482 {
2483 frame->data = (void *)av;
2484 frame->prepare = prepare_nop;
2485 }
2486 else
2487 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2496 }
2497}
2498
2499static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2503 frame->check = slf_check_semaphore_down;
2504}
2505
2506static void
2507slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 if (items >= 2)
2510 {
2511 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2514
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2516
2517 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0);
2519
2520 frame->prepare = prepare_nop;
2521 frame->check = slf_check_nop;
2522 }
2523 else
2524 {
2525 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2526 frame->check = slf_check_semaphore_wait;
2527 }
2528}
2529
2530/* signal */
2531
2532static void
2533coro_signal_wake (pTHX_ AV *av, int count)
2534{
2535 SvIVX (AvARRAY (av)[0]) = 0;
2536
2537 /* now signal count waiters */
2538 while (count > 0 && AvFILLp (av) > 0)
2539 {
2540 SV *cb;
2541
2542 /* swap first two elements so we can shift a waiter */
2543 cb = AvARRAY (av)[0];
2544 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb;
2546
2547 cb = av_shift (av);
2548
2549 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */
2551 SvREFCNT_dec (cb);
2552
2553 --count;
2554 }
2555}
2556
2557static int
2558slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2559{
2560 /* if we are about to throw, also stop waiting */
2561 return SvROK ((SV *)frame->data) && !CORO_THROW;
2562}
2563
2564static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 AV *av = (AV *)SvRV (arg [0]);
2568
2569 if (SvIVX (AvARRAY (av)[0]))
2570 {
2571 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop;
2574 }
2575 else
2576 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2578
2579 av_push (av, waiter);
2580
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule;
2583 frame->check = slf_check_signal_wait;
2584 }
2585}
2586
2587/*****************************************************************************/
2588/* Coro::AIO */
2589
2590#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2591
2592/* helper storage struct */
2593struct io_state
2594{
2595 int errorno;
2596 I32 laststype; /* U16 in 5.10.0 */
2597 int laststatval;
2598 Stat_t statcache;
2599};
2600
2601static void
2602coro_aio_callback (pTHX_ CV *cv)
2603{
2604 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG;
2606 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608
2609 av_extend (state, items - 1);
2610
2611 sv_upgrade (data_sv, SVt_PV);
2612 SvCUR_set (data_sv, sizeof (struct io_state));
2613 SvPOK_only (data_sv);
2614
2615 {
2616 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2617
2618 data->errorno = errno;
2619 data->laststype = PL_laststype;
2620 data->laststatval = PL_laststatval;
2621 data->statcache = PL_statcache;
2622 }
2623
2624 /* now build the result vector out of all the parameters and the data_sv */
2625 {
2626 int i;
2627
2628 for (i = 0; i < items; ++i)
2629 av_push (state, SvREFCNT_inc_NN (ST (i)));
2630 }
2631
2632 av_push (state, data_sv);
2633
2634 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro);
2636 SvREFCNT_dec ((AV *)state);
2637}
2638
2639static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{
2642 AV *state = (AV *)frame->data;
2643
2644 /* if we are about to throw, return early */
2645 /* this does not cancel the aio request, but at least */
2646 /* it quickly returns */
2647 if (CORO_THROW)
2648 return 0;
2649
2650 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2652 return 1;
2653
2654 /* restore status */
2655 {
2656 SV *data_sv = av_pop (state);
2657 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2658
2659 errno = data->errorno;
2660 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache;
2663
2664 SvREFCNT_dec (data_sv);
2665 }
2666
2667 /* push result values */
2668 {
2669 dSP;
2670 int i;
2671
2672 EXTEND (SP, AvFILLp (state) + 1);
2673 for (i = 0; i <= AvFILLp (state); ++i)
2674 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2675
2676 PUTBACK;
2677 }
2678
2679 return 0;
2680}
2681
2682static void
2683slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2686 SV *coro_hv = SvRV (coro_current);
2687 struct coro *coro = SvSTATE_hv (coro_hv);
2688
2689 /* put our coroutine id on the state arg */
2690 av_push (state, SvREFCNT_inc_NN (coro_hv));
2691
2692 /* first see whether we have a non-zero priority and set it as AIO prio */
2693 if (coro->prio)
2694 {
2695 dSP;
2696
2697 static SV *prio_cv;
2698 static SV *prio_sv;
2699
2700 if (expect_false (!prio_cv))
2701 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0);
2704 }
2705
2706 PUSHMARK (SP);
2707 sv_setiv (prio_sv, coro->prio);
2708 XPUSHs (prio_sv);
2709
2710 PUTBACK;
2711 call_sv (prio_cv, G_VOID | G_DISCARD);
2712 }
2713
2714 /* now call the original request */
2715 {
2716 dSP;
2717 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2718 int i;
2719
2720 PUSHMARK (SP);
2721
2722 /* first push all args to the stack */
2723 EXTEND (SP, items + 1);
2724
2725 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]);
2727
2728 /* now push the callback closure */
2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2730
2731 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 }
2735
2736 /* now that the requets is going, we loop toll we have a result */
2737 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req;
2740}
2741
2742static void
2743coro_aio_req_xs (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746
2747 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2748
2749 XSRETURN_EMPTY;
2750}
2751
2752/*****************************************************************************/
2753
2754#if CORO_CLONE
2755# include "clone.c"
2756#endif
1744 2757
1745MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1746 2759
1747PROTOTYPES: DISABLE 2760PROTOTYPES: DISABLE
1748 2761
1749BOOT: 2762BOOT:
1750{ 2763{
1751#ifdef USE_ITHREADS 2764#ifdef USE_ITHREADS
1752 MUTEX_INIT (&coro_lock); 2765# if CORO_PTHREAD
2766 coro_thx = PERL_GET_CONTEXT;
2767# endif
1753#endif 2768#endif
1754 BOOT_PAGESIZE; 2769 BOOT_PAGESIZE;
2770
2771 cctx_current = cctx_new_empty ();
1755 2772
1756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1758 2775
1759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1775 main_top_env = PL_top_env; 2792 main_top_env = PL_top_env;
1776 2793
1777 while (main_top_env->je_prev) 2794 while (main_top_env->je_prev)
1778 main_top_env = main_top_env->je_prev; 2795 main_top_env = main_top_env->je_prev;
1779 2796
2797 {
2798 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2799
2800 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2801 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2802
2803 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2804 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2805 }
2806
1780 coroapi.ver = CORO_API_VERSION; 2807 coroapi.ver = CORO_API_VERSION;
1781 coroapi.rev = CORO_API_REVISION; 2808 coroapi.rev = CORO_API_REVISION;
2809
1782 coroapi.transfer = api_transfer; 2810 coroapi.transfer = api_transfer;
2811
2812 coroapi.sv_state = SvSTATE_;
2813 coroapi.execute_slf = api_execute_slf;
2814 coroapi.prepare_nop = prepare_nop;
2815 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself;
1783 2818
1784 { 2819 {
1785 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1786 2821
1787 if (!svp) croak ("Time::HiRes is required"); 2822 if (!svp) croak ("Time::HiRes is required");
… …
1793 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1794} 2829}
1795 2830
1796SV * 2831SV *
1797new (char *klass, ...) 2832new (char *klass, ...)
2833 ALIAS:
2834 Coro::new = 1
1798 CODE: 2835 CODE:
1799{ 2836{
1800 struct coro *coro; 2837 struct coro *coro;
1801 MAGIC *mg; 2838 MAGIC *mg;
1802 HV *hv; 2839 HV *hv;
2840 CV *cb;
1803 int i; 2841 int i;
2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
1804 2856
1805 Newz (0, coro, 1, struct coro); 2857 Newz (0, coro, 1, struct coro);
1806 coro->args = newAV (); 2858 coro->args = newAV ();
1807 coro->flags = CF_NEW; 2859 coro->flags = CF_NEW;
1808 2860
… …
1813 coro->hv = hv = newHV (); 2865 coro->hv = hv = newHV ();
1814 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1815 mg->mg_flags |= MGf_DUP; 2867 mg->mg_flags |= MGf_DUP;
1816 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1817 2869
2870 if (items > 1)
2871 {
1818 av_extend (coro->args, items - 1); 2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
1819 for (i = 1; i < items; i++) 2882 for (i = 2; i < items; i++)
1820 av_push (coro->args, newSVsv (ST (i))); 2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
1821} 2885}
1822 OUTPUT: 2886 OUTPUT:
1823 RETVAL 2887 RETVAL
1824 2888
1825# these not obviously related functions are all rolled into the same xs
1826# function to increase chances that they all will call transfer with the same
1827# stack offset
1828void 2889void
1829_set_stacklevel (...) 2890transfer (...)
1830 ALIAS: 2891 PROTOTYPE: $$
1831 Coro::State::transfer = 1 2892 CODE:
1832 Coro::schedule = 2 2893 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1833 Coro::cede = 3
1834 Coro::cede_notself = 4
1835 CODE:
1836{
1837 struct transfer_args ta;
1838
1839 PUTBACK;
1840 switch (ix)
1841 {
1842 case 0:
1843 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1844 ta.next = 0;
1845 break;
1846
1847 case 1:
1848 if (items != 2)
1849 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1850
1851 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1852 break;
1853
1854 case 2:
1855 prepare_schedule (aTHX_ &ta);
1856 break;
1857
1858 case 3:
1859 prepare_cede (aTHX_ &ta);
1860 break;
1861
1862 case 4:
1863 if (!prepare_cede_notself (aTHX_ &ta))
1864 XSRETURN_EMPTY;
1865
1866 break;
1867 }
1868 SPAGAIN;
1869
1870 BARRIER;
1871 PUTBACK;
1872 TRANSFER (ta, 0);
1873 SPAGAIN; /* might be the sp of a different coroutine now */
1874 /* be extra careful not to ever do anything after TRANSFER */
1875}
1876 2894
1877bool 2895bool
1878_destroy (SV *coro_sv) 2896_destroy (SV *coro_sv)
1879 CODE: 2897 CODE:
1880 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1885_exit (int code) 2903_exit (int code)
1886 PROTOTYPE: $ 2904 PROTOTYPE: $
1887 CODE: 2905 CODE:
1888 _exit (code); 2906 _exit (code);
1889 2907
2908SV *
2909clone (Coro::State coro)
2910 CODE:
2911{
2912#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro);
2914 MAGIC *mg;
2915 /* TODO: too much duplication */
2916 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP;
2919 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2920#else
2921 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2922#endif
2923}
2924 OUTPUT:
2925 RETVAL
2926
1890int 2927int
1891cctx_stacksize (int new_stacksize = 0) 2928cctx_stacksize (int new_stacksize = 0)
2929 PROTOTYPE: ;$
1892 CODE: 2930 CODE:
1893 RETVAL = coro_stacksize; 2931 RETVAL = cctx_stacksize;
1894 if (new_stacksize) 2932 if (new_stacksize)
2933 {
1895 coro_stacksize = new_stacksize; 2934 cctx_stacksize = new_stacksize;
2935 ++cctx_gen;
2936 }
1896 OUTPUT: 2937 OUTPUT:
1897 RETVAL 2938 RETVAL
1898 2939
1899int 2940int
2941cctx_max_idle (int max_idle = 0)
2942 PROTOTYPE: ;$
2943 CODE:
2944 RETVAL = cctx_max_idle;
2945 if (max_idle > 1)
2946 cctx_max_idle = max_idle;
2947 OUTPUT:
2948 RETVAL
2949
2950int
1900cctx_count () 2951cctx_count ()
2952 PROTOTYPE:
1901 CODE: 2953 CODE:
1902 RETVAL = cctx_count; 2954 RETVAL = cctx_count;
1903 OUTPUT: 2955 OUTPUT:
1904 RETVAL 2956 RETVAL
1905 2957
1906int 2958int
1907cctx_idle () 2959cctx_idle ()
2960 PROTOTYPE:
1908 CODE: 2961 CODE:
1909 RETVAL = cctx_idle; 2962 RETVAL = cctx_idle;
1910 OUTPUT: 2963 OUTPUT:
1911 RETVAL 2964 RETVAL
1912 2965
1913void 2966void
1914list () 2967list ()
2968 PROTOTYPE:
1915 PPCODE: 2969 PPCODE:
1916{ 2970{
1917 struct coro *coro; 2971 struct coro *coro;
1918 for (coro = coro_first; coro; coro = coro->next) 2972 for (coro = coro_first; coro; coro = coro->next)
1919 if (coro->hv) 2973 if (coro->hv)
… …
1978 RETVAL = boolSV (coro->flags & ix); 3032 RETVAL = boolSV (coro->flags & ix);
1979 OUTPUT: 3033 OUTPUT:
1980 RETVAL 3034 RETVAL
1981 3035
1982void 3036void
3037throw (Coro::State self, SV *throw = &PL_sv_undef)
3038 PROTOTYPE: $;$
3039 CODE:
3040{
3041 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except;
3043 SvREFCNT_dec (*throwp);
3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3045}
3046
3047void
1983api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$
3050 C_ARGS: aTHX_ coro, flags
1984 3051
1985SV * 3052SV *
1986has_cctx (Coro::State coro) 3053has_cctx (Coro::State coro)
1987 PROTOTYPE: $ 3054 PROTOTYPE: $
1988 CODE: 3055 CODE:
1989 RETVAL = boolSV (!!coro->cctx); 3056 /* maybe manage the running flag differently */
3057 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1990 OUTPUT: 3058 OUTPUT:
1991 RETVAL 3059 RETVAL
1992 3060
1993int 3061int
1994is_traced (Coro::State coro) 3062is_traced (Coro::State coro)
… …
1996 CODE: 3064 CODE:
1997 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3065 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1998 OUTPUT: 3066 OUTPUT:
1999 RETVAL 3067 RETVAL
2000 3068
2001IV 3069UV
2002rss (Coro::State coro) 3070rss (Coro::State coro)
2003 PROTOTYPE: $ 3071 PROTOTYPE: $
2004 ALIAS: 3072 ALIAS:
2005 usecount = 1 3073 usecount = 1
2006 CODE: 3074 CODE:
… …
2012 OUTPUT: 3080 OUTPUT:
2013 RETVAL 3081 RETVAL
2014 3082
2015void 3083void
2016force_cctx () 3084force_cctx ()
3085 PROTOTYPE:
2017 CODE: 3086 CODE:
2018 struct coro *coro = SvSTATE (coro_current);
2019 coro->cctx->idle_sp = 0; 3087 cctx_current->idle_sp = 0;
2020 3088
2021void 3089void
2022swap_defsv (Coro::State self) 3090swap_defsv (Coro::State self)
2023 PROTOTYPE: $ 3091 PROTOTYPE: $
2024 ALIAS: 3092 ALIAS:
2025 swap_defav = 1 3093 swap_defav = 1
2026 CODE: 3094 CODE:
2027 if (!self->slot) 3095 if (!self->slot)
2028 croak ("cannot swap state with coroutine that has no saved state"); 3096 croak ("cannot swap state with coroutine that has no saved state,");
2029 else 3097 else
2030 { 3098 {
2031 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3099 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2032 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2033 3101
2034 SV *tmp = *src; *src = *dst; *dst = tmp; 3102 SV *tmp = *src; *src = *dst; *dst = tmp;
2035 } 3103 }
2036 3104
3105
2037MODULE = Coro::State PACKAGE = Coro 3106MODULE = Coro::State PACKAGE = Coro
2038 3107
2039BOOT: 3108BOOT:
2040{ 3109{
2041 int i; 3110 int i;
2042 3111
2043 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2044 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2045 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2046 3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2047 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2048 SvREADONLY_on (coro_current); 3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2049 3126
2050 coro_stash = gv_stashpv ("Coro", TRUE); 3127 coro_stash = gv_stashpv ("Coro", TRUE);
2051 3128
2052 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2053 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2058 3135
2059 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3136 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2060 coro_ready[i] = newAV (); 3137 coro_ready[i] = newAV ();
2061 3138
2062 { 3139 {
2063 SV *sv = perl_get_sv ("Coro::API", TRUE); 3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2064 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2065 3141
2066 coroapi.schedule = api_schedule; 3142 coroapi.schedule = api_schedule;
3143 coroapi.schedule_to = api_schedule_to;
2067 coroapi.cede = api_cede; 3144 coroapi.cede = api_cede;
2068 coroapi.cede_notself = api_cede_notself; 3145 coroapi.cede_notself = api_cede_notself;
2069 coroapi.ready = api_ready; 3146 coroapi.ready = api_ready;
2070 coroapi.is_ready = api_is_ready; 3147 coroapi.is_ready = api_is_ready;
2071 coroapi.nready = &coro_nready; 3148 coroapi.nready = coro_nready;
2072 coroapi.current = coro_current; 3149 coroapi.current = coro_current;
2073 3150
2074 GCoroAPI = &coroapi; 3151 /*GCoroAPI = &coroapi;*/
2075 sv_setiv (sv, (IV)&coroapi); 3152 sv_setiv (sv, (IV)&coroapi);
2076 SvREADONLY_on (sv); 3153 SvREADONLY_on (sv);
2077 } 3154 }
2078} 3155}
3156
3157void
3158terminate (...)
3159 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161
3162void
3163schedule (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166
3167void
3168schedule_to (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3171
3172void
3173cede_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3176
3177void
3178cede (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede);
3181
3182void
3183cede_notself (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
2079 3192
2080void 3193void
2081_set_current (SV *current) 3194_set_current (SV *current)
2082 PROTOTYPE: $ 3195 PROTOTYPE: $
2083 CODE: 3196 CODE:
… …
2086 3199
2087void 3200void
2088_set_readyhook (SV *hook) 3201_set_readyhook (SV *hook)
2089 PROTOTYPE: $ 3202 PROTOTYPE: $
2090 CODE: 3203 CODE:
2091 LOCK;
2092 SvREFCNT_dec (coro_readyhook); 3204 SvREFCNT_dec (coro_readyhook);
2093 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3205 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2094 UNLOCK;
2095 3206
2096int 3207int
2097prio (Coro::State coro, int newprio = 0) 3208prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$
2098 ALIAS: 3210 ALIAS:
2099 nice = 1 3211 nice = 1
2100 CODE: 3212 CODE:
2101{ 3213{
2102 RETVAL = coro->prio; 3214 RETVAL = coro->prio;
… …
2117 3229
2118SV * 3230SV *
2119ready (SV *self) 3231ready (SV *self)
2120 PROTOTYPE: $ 3232 PROTOTYPE: $
2121 CODE: 3233 CODE:
2122 RETVAL = boolSV (api_ready (self)); 3234 RETVAL = boolSV (api_ready (aTHX_ self));
2123 OUTPUT: 3235 OUTPUT:
2124 RETVAL 3236 RETVAL
2125 3237
2126int 3238int
2127nready (...) 3239nready (...)
… …
2130 RETVAL = coro_nready; 3242 RETVAL = coro_nready;
2131 OUTPUT: 3243 OUTPUT:
2132 RETVAL 3244 RETVAL
2133 3245
2134void 3246void
2135throw (Coro::State self, SV *throw = &PL_sv_undef) 3247_pool_handler (...)
2136 PROTOTYPE: $;$ 3248 CODE:
2137 CODE: 3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2138 SvREFCNT_dec (self->throw);
2139 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2140 3250
2141# for async_pool speedup
2142void 3251void
2143_pool_1 (SV *cb) 3252async_pool (SV *cv, ...)
3253 PROTOTYPE: &@
3254 PPCODE:
3255{
3256 HV *hv = (HV *)av_pop (av_async_pool);
3257 AV *av = newAV ();
3258 SV *cb = ST (0);
3259 int i;
3260
3261 av_extend (av, items - 2);
3262 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264
3265 if ((SV *)hv == &PL_sv_undef)
3266 {
3267 PUSHMARK (SP);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3276 }
3277
3278 {
3279 struct coro *coro = SvSTATE_hv (hv);
3280
3281 assert (!coro->invoke_cb);
3282 assert (!coro->invoke_av);
3283 coro->invoke_cb = SvREFCNT_inc (cb);
3284 coro->invoke_av = av;
3285 }
3286
3287 api_ready (aTHX_ (SV *)hv);
3288
3289 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else
3292 SvREFCNT_dec (hv);
3293}
3294
3295SV *
3296rouse_cb ()
3297 PROTOTYPE:
2144 CODE: 3298 CODE:
2145{ 3299 RETVAL = coro_new_rouse_cb (aTHX);
2146 struct coro *coro = SvSTATE (coro_current);
2147 HV *hv = (HV *)SvRV (coro_current);
2148 AV *defav = GvAV (PL_defgv);
2149 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2150 AV *invoke_av;
2151 int i, len;
2152
2153 if (!invoke)
2154 {
2155 SV *old = PL_diehook;
2156 PL_diehook = 0;
2157 SvREFCNT_dec (old);
2158 croak ("\3async_pool terminate\2\n");
2159 }
2160
2161 SvREFCNT_dec (coro->saved_deffh);
2162 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2163
2164 hv_store (hv, "desc", sizeof ("desc") - 1,
2165 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2166
2167 invoke_av = (AV *)SvRV (invoke);
2168 len = av_len (invoke_av);
2169
2170 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2171
2172 if (len > 0)
2173 {
2174 av_fill (defav, len - 1);
2175 for (i = 0; i < len; ++i)
2176 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2177 }
2178
2179 SvREFCNT_dec (invoke);
2180}
2181
2182void
2183_pool_2 (SV *cb)
2184 CODE:
2185{
2186 struct coro *coro = SvSTATE (coro_current);
2187
2188 sv_setsv (cb, &PL_sv_undef);
2189
2190 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2191 coro->saved_deffh = 0;
2192
2193 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2194 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2195 {
2196 SV *old = PL_diehook;
2197 PL_diehook = 0;
2198 SvREFCNT_dec (old);
2199 croak ("\3async_pool terminate\2\n");
2200 }
2201
2202 av_clear (GvAV (PL_defgv));
2203 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2204 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2205
2206 coro->prio = 0;
2207
2208 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2209 api_trace (coro_current, 0);
2210
2211 av_push (av_async_pool, newSVsv (coro_current));
2212}
2213
2214#if 0
2215
2216void
2217_generator_call (...)
2218 PROTOTYPE: @
2219 PPCODE:
2220 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2221 xxxx
2222 abort ();
2223
2224SV *
2225gensub (SV *sub, ...)
2226 PROTOTYPE: &;@
2227 CODE:
2228{
2229 struct coro *coro;
2230 MAGIC *mg;
2231 CV *xcv;
2232 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2233 int i;
2234
2235 CvGV (ncv) = CvGV (cv);
2236 CvFILE (ncv) = CvFILE (cv);
2237
2238 Newz (0, coro, 1, struct coro);
2239 coro->args = newAV ();
2240 coro->flags = CF_NEW;
2241
2242 av_extend (coro->args, items - 1);
2243 for (i = 1; i < items; i++)
2244 av_push (coro->args, newSVsv (ST (i)));
2245
2246 CvISXSUB_on (ncv);
2247 CvXSUBANY (ncv).any_ptr = (void *)coro;
2248
2249 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2250
2251 CvXSUB (ncv) = CvXSUB (xcv);
2252 CvANON_on (ncv);
2253
2254 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2255 RETVAL = newRV_noinc ((SV *)ncv);
2256}
2257 OUTPUT: 3300 OUTPUT:
2258 RETVAL 3301 RETVAL
2259 3302
2260#endif
2261
2262
2263MODULE = Coro::State PACKAGE = Coro::AIO
2264
2265void 3303void
2266_get_state (SV *self) 3304rouse_wait (...)
3305 PROTOTYPE: ;$
2267 PPCODE: 3306 PPCODE:
2268{ 3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2269 AV *defav = GvAV (PL_defgv);
2270 AV *av = newAV ();
2271 int i;
2272 SV *data_sv = newSV (sizeof (struct io_state));
2273 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2274 SvCUR_set (data_sv, sizeof (struct io_state));
2275 SvPOK_only (data_sv);
2276 3308
2277 data->errorno = errno;
2278 data->laststype = PL_laststype;
2279 data->laststatval = PL_laststatval;
2280 data->statcache = PL_statcache;
2281 3309
2282 av_extend (av, AvFILLp (defav) + 1 + 1); 3310MODULE = Coro::State PACKAGE = PerlIO::cede
2283 3311
2284 for (i = 0; i <= AvFILLp (defav); ++i) 3312BOOT:
2285 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2286 3314
2287 av_push (av, data_sv);
2288 3315
2289 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3316MODULE = Coro::State PACKAGE = Coro::Semaphore
2290 3317
2291 api_ready (self); 3318SV *
2292} 3319new (SV *klass, SV *count = 0)
3320 CODE:
3321 RETVAL = sv_bless (
3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3323 GvSTASH (CvGV (cv))
3324 );
3325 OUTPUT:
3326 RETVAL
3327
3328# helper for Coro::Channel
3329SV *
3330_alloc (int count)
3331 CODE:
3332 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT:
3334 RETVAL
3335
3336SV *
3337count (SV *self)
3338 CODE:
3339 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3340 OUTPUT:
3341 RETVAL
2293 3342
2294void 3343void
2295_set_state (SV *state) 3344up (SV *self, int adjust = 1)
2296 PROTOTYPE: $ 3345 ALIAS:
3346 adjust = 1
3347 CODE:
3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3349
3350void
3351down (...)
3352 CODE:
3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3354
3355void
3356wait (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3359
3360void
3361try (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 SV *count_sv = AvARRAY (av)[0];
3366 IV count = SvIVX (count_sv);
3367
3368 if (count > 0)
3369 {
3370 --count;
3371 SvIVX (count_sv) = count;
3372 XSRETURN_YES;
3373 }
3374 else
3375 XSRETURN_NO;
3376}
3377
3378void
3379waiters (SV *self)
3380 PPCODE:
3381{
3382 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1;
3384
3385 if (GIMME_V == G_SCALAR)
3386 XPUSHs (sv_2mortal (newSViv (wcount)));
3387 else
3388 {
3389 int i;
3390 EXTEND (SP, wcount);
3391 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 }
3394}
3395
3396MODULE = Coro::State PACKAGE = Coro::Signal
3397
3398SV *
3399new (SV *klass)
2297 PPCODE: 3400 CODE:
3401 RETVAL = sv_bless (
3402 coro_waitarray_new (aTHX_ 0),
3403 GvSTASH (CvGV (cv))
3404 );
3405 OUTPUT:
3406 RETVAL
3407
3408void
3409wait (...)
3410 CODE:
3411 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3412
3413void
3414broadcast (SV *self)
3415 CODE:
2298{ 3416{
2299 AV *av = (AV *)SvRV (state); 3417 AV *av = (AV *)SvRV (self);
2300 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3418 coro_signal_wake (aTHX_ av, AvFILLp (av));
2301 int i; 3419}
2302 3420
2303 errno = data->errorno; 3421void
2304 PL_laststype = data->laststype; 3422send (SV *self)
2305 PL_laststatval = data->laststatval; 3423 CODE:
2306 PL_statcache = data->statcache; 3424{
3425 AV *av = (AV *)SvRV (self);
2307 3426
2308 EXTEND (SP, AvFILLp (av)); 3427 if (AvFILLp (av))
2309 for (i = 0; i < AvFILLp (av); ++i) 3428 coro_signal_wake (aTHX_ av, 1);
2310 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3429 else
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2311} 3431}
3432
3433IV
3434awaited (SV *self)
3435 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT:
3438 RETVAL
2312 3439
2313 3440
2314MODULE = Coro::State PACKAGE = Coro::AnyEvent 3441MODULE = Coro::State PACKAGE = Coro::AnyEvent
2315 3442
2316BOOT: 3443BOOT:
2317 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3444 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2318 3445
2319SV * 3446void
2320_schedule (...) 3447_schedule (...)
2321 PROTOTYPE: @
2322 CODE: 3448 CODE:
2323{ 3449{
2324 static int incede; 3450 static int incede;
2325 3451
2326 api_cede_notself (); 3452 api_cede_notself (aTHX);
2327 3453
2328 ++incede; 3454 ++incede;
2329 while (coro_nready >= incede && api_cede ()) 3455 while (coro_nready >= incede && api_cede (aTHX))
2330 ; 3456 ;
2331 3457
2332 sv_setsv (sv_activity, &PL_sv_undef); 3458 sv_setsv (sv_activity, &PL_sv_undef);
2333 if (coro_nready >= incede) 3459 if (coro_nready >= incede)
2334 { 3460 {
2335 PUSHMARK (SP); 3461 PUSHMARK (SP);
2336 PUTBACK; 3462 PUTBACK;
2337 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3463 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2338 SPAGAIN;
2339 } 3464 }
2340 3465
2341 --incede; 3466 --incede;
2342} 3467}
2343 3468
2344 3469
2345MODULE = Coro::State PACKAGE = PerlIO::cede 3470MODULE = Coro::State PACKAGE = Coro::AIO
2346 3471
2347BOOT: 3472void
2348 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3473_register (char *target, char *proto, SV *req)
3474 CODE:
3475{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req);
3477 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481}
3482

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