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Comparing Coro/Coro/State.xs (file contents):
Revision 1.298 by root, Tue Nov 18 23:20:41 2008 UTC vs.
Revision 1.387 by root, Mon Feb 21 13:38:04 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
21
22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
16 25
17#ifdef WIN32 26#ifdef WIN32
18# undef setjmp 27# undef setjmp
19# undef longjmp 28# undef longjmp
20# undef _exit 29# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 30# define setjmp _setjmp /* deep magic */
22#else 31#else
23# include <inttypes.h> /* most portable stdint.h */ 32# include <inttypes.h> /* most portable stdint.h */
24#endif 33#endif
25 34
26#ifdef HAVE_MMAP 35#ifdef HAVE_MMAP
… …
51#endif 60#endif
52 61
53/* the maximum number of idle cctx that will be pooled */ 62/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 63static int cctx_max_idle = 4;
55 64
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 65#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 66# undef CORO_STACKGUARD
111#endif 67#endif
112 68
113#ifndef CORO_STACKGUARD 69#ifndef CORO_STACKGUARD
… …
127#else 83#else
128# define dSTACKLEVEL volatile void *stacklevel 84# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 85# define STACKLEVEL ((void *)&stacklevel)
130#endif 86#endif
131 87
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 88#define IN_DESTRUCT PL_dirty
133 89
134#if __GNUC__ >= 3 90#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x) 91# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value)) 92# define expect(expr,value) __builtin_expect ((expr), (value))
137# define INLINE static inline 93# define INLINE static inline
138#else 94#else
139# define attribute(x) 95# define attribute(x)
140# define expect(expr,value) (expr) 96# define expect(expr,value) (expr)
141# define INLINE static 97# define INLINE static
… …
153# if CORO_PTHREAD 109# if CORO_PTHREAD
154static void *coro_thx; 110static void *coro_thx;
155# endif 111# endif
156#endif 112#endif
157 113
114#ifdef __linux
115# include <time.h> /* for timespec */
116# include <syscall.h> /* for SYS_* */
117# ifdef SYS_clock_gettime
118# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
119# define CORO_CLOCK_MONOTONIC 1
120# define CORO_CLOCK_THREAD_CPUTIME_ID 3
121# endif
122#endif
123
158static double (*nvtime)(); /* so why doesn't it take void? */ 124static double (*nvtime)(); /* so why doesn't it take void? */
125static void (*u2time)(pTHX_ UV ret[2]);
159 126
160/* we hijack an hopefully unused CV flag for our purposes */ 127/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 128#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 129static OP *pp_slf (pTHX);
163 130
… …
167static AV *main_mainstack; /* used to differentiate between $main and others */ 134static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 135static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 136static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 137static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 138
139static AV *av_destroy; /* destruction queue */
140static SV *sv_manager; /* the manager coro */
141static SV *sv_idle; /* $Coro::idle */
142
172static GV *irsgv; /* $/ */ 143static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 144static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 145static SV *rv_diehook;
175static SV *rv_warnhook; 146static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 147static HV *hv_sig; /* %SIG */
177 148
178/* async_pool helper stuff */ 149/* async_pool helper stuff */
179static SV *sv_pool_rss; 150static SV *sv_pool_rss;
180static SV *sv_pool_size; 151static SV *sv_pool_size;
152static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 153static AV *av_async_pool; /* idle pool */
154static SV *sv_Coro; /* class string */
155static CV *cv_pool_handler;
182 156
183/* Coro::AnyEvent */ 157/* Coro::AnyEvent */
184static SV *sv_activity; 158static SV *sv_activity;
159
160/* enable processtime/realtime profiling */
161static char enable_times;
162typedef U32 coro_ts[2];
163static coro_ts time_real, time_cpu;
164static char times_valid;
185 165
186static struct coro_cctx *cctx_first; 166static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle;
188 168
189enum { 169enum {
… …
215 int valgrind_id; 195 int valgrind_id;
216#endif 196#endif
217 unsigned char flags; 197 unsigned char flags;
218} coro_cctx; 198} coro_cctx;
219 199
200coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
220enum { 204enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 210};
226 211
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 212/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 213typedef struct
229{ 214{
230 SV *defsv; 215 SV *defsv;
231 AV *defav; 216 AV *defav;
232 SV *errsv; 217 SV *errsv;
233 SV *irsgv; 218 SV *irsgv;
219 HV *hinthv;
234#define VAR(name,type) type name; 220#define VAR(name,type) type name;
235# include "state.h" 221# include "state.h"
236#undef VAR 222#undef VAR
237} perl_slots; 223} perl_slots;
238 224
… …
241/* this is a structure representing a perl-level coroutine */ 227/* this is a structure representing a perl-level coroutine */
242struct coro { 228struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 230 coro_cctx *cctx;
245 231
232 /* ready queue */
233 struct coro *next_ready;
234
246 /* state data */ 235 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 237 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
250 239
240 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 245 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
256 246
257 /* statistics */ 247 /* statistics */
258 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
259 249
260 /* coro process data */ 250 /* coro process data */
261 int prio; 251 int prio;
262 SV *except; /* exception to be thrown */ 252 SV *except; /* exception to be thrown */
253 SV *rouse_cb;
263 254
264 /* async_pool */ 255 /* async_pool */
265 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
266 269
267 /* linked list */ 270 /* linked list */
268 struct coro *next, *prev; 271 struct coro *next, *prev;
269}; 272};
270 273
… …
276/* the mainr easonw e don't support windows process emulation */ 279/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
278 281
279/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
280 283
281#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
287 290
288/* for Coro.pm */ 291/* for Coro.pm */
289static SV *coro_current; 292static SV *coro_current;
290static SV *coro_readyhook; 293static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run, *cv_coro_terminate;
292static struct coro *coro_first; 296static struct coro *coro_first;
293#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
298
299/** Coro::Select ************************************************************/
300
301static OP *(*coro_old_pp_sselect) (pTHX);
302static SV *coro_select_select;
303
304/* horrible hack, but if it works... */
305static OP *
306coro_pp_sselect (pTHX)
307{
308 dSP;
309 PUSHMARK (SP - 4); /* fake argument list */
310 XPUSHs (coro_select_select);
311 PUTBACK;
312
313 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
314 PL_op->op_flags |= OPf_STACKED;
315 PL_op->op_private = 0;
316 return PL_ppaddr [OP_ENTERSUB](aTHX);
317}
318
319/** time stuff **************************************************************/
320
321#ifdef HAS_GETTIMEOFDAY
322
323static void
324coro_u2time (pTHX_ UV ret[2])
325{
326 struct timeval tv;
327 gettimeofday (&tv, 0);
328
329 ret [0] = tv.tv_sec;
330 ret [1] = tv.tv_usec;
331}
332
333static double
334coro_nvtime ()
335{
336 struct timeval tv;
337 gettimeofday (&tv, 0);
338
339 return tv.tv_sec + tv.tv_usec * 1e-6;
340}
341
342static void
343time_init (void)
344{
345 nvtime = coro_nvtime;
346 u2time = coro_u2time;
347}
348
349#else
350
351static void
352time_init (void)
353{
354 SV **svp;
355
356 require_pv ("Time::HiRes");
357
358 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
359
360 if (!svp) croak ("Time::HiRes is required");
361 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
362
363 nvtime = INT2PTR (double (*)(), SvIV (*svp));
364
365 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
366 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
367}
368
369#endif
294 370
295/** lowlevel stuff **********************************************************/ 371/** lowlevel stuff **********************************************************/
296 372
297static SV * 373static SV *
298coro_get_sv (pTHX_ const char *name, int create) 374coro_get_sv (pTHX_ const char *name, int create)
… …
322 get_hv (name, create); 398 get_hv (name, create);
323#endif 399#endif
324 return get_hv (name, create); 400 return get_hv (name, create);
325} 401}
326 402
403INLINE void
404coro_times_update ()
405{
406#ifdef coro_clock_gettime
407 struct timespec ts;
408
409 ts.tv_sec = ts.tv_nsec = 0;
410 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
411 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
412
413 ts.tv_sec = ts.tv_nsec = 0;
414 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
415 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
416#else
417 dTHX;
418 UV tv[2];
419
420 u2time (aTHX_ tv);
421 time_real [0] = tv [0];
422 time_real [1] = tv [1] * 1000;
423#endif
424}
425
426INLINE void
427coro_times_add (struct coro *c)
428{
429 c->t_real [1] += time_real [1];
430 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
431 c->t_real [0] += time_real [0];
432
433 c->t_cpu [1] += time_cpu [1];
434 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
435 c->t_cpu [0] += time_cpu [0];
436}
437
438INLINE void
439coro_times_sub (struct coro *c)
440{
441 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
442 c->t_real [1] -= time_real [1];
443 c->t_real [0] -= time_real [0];
444
445 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
446 c->t_cpu [1] -= time_cpu [1];
447 c->t_cpu [0] -= time_cpu [0];
448}
449
450/*****************************************************************************/
451/* magic glue */
452
453#define CORO_MAGIC_type_cv 26
454#define CORO_MAGIC_type_state PERL_MAGIC_ext
455
456#define CORO_MAGIC_NN(sv, type) \
457 (expect_true (SvMAGIC (sv)->mg_type == type) \
458 ? SvMAGIC (sv) \
459 : mg_find (sv, type))
460
461#define CORO_MAGIC(sv, type) \
462 (expect_true (SvMAGIC (sv)) \
463 ? CORO_MAGIC_NN (sv, type) \
464 : 0)
465
466#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
467#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
468
469INLINE struct coro *
470SvSTATE_ (pTHX_ SV *coro)
471{
472 HV *stash;
473 MAGIC *mg;
474
475 if (SvROK (coro))
476 coro = SvRV (coro);
477
478 if (expect_false (SvTYPE (coro) != SVt_PVHV))
479 croak ("Coro::State object required");
480
481 stash = SvSTASH (coro);
482 if (expect_false (stash != coro_stash && stash != coro_state_stash))
483 {
484 /* very slow, but rare, check */
485 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
486 croak ("Coro::State object required");
487 }
488
489 mg = CORO_MAGIC_state (coro);
490 return (struct coro *)mg->mg_ptr;
491}
492
493#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
494
495/* faster than SvSTATE, but expects a coroutine hv */
496#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
497#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
498
499/*****************************************************************************/
500/* padlist management and caching */
501
327static AV * 502static AV *
328coro_clone_padlist (pTHX_ CV *cv) 503coro_derive_padlist (pTHX_ CV *cv)
329{ 504{
330 AV *padlist = CvPADLIST (cv); 505 AV *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 506 AV *newpadlist, *newpad;
332 507
333 newpadlist = newAV (); 508 newpadlist = newAV ();
… …
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 513 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 514#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 515 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist); 516 --AvFILLp (padlist);
342 517
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 518 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
344 av_store (newpadlist, 1, (SV *)newpad); 519 av_store (newpadlist, 1, (SV *)newpad);
345 520
346 return newpadlist; 521 return newpadlist;
347} 522}
348 523
349static void 524static void
350free_padlist (pTHX_ AV *padlist) 525free_padlist (pTHX_ AV *padlist)
351{ 526{
352 /* may be during global destruction */ 527 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 528 if (!IN_DESTRUCT)
354 { 529 {
355 I32 i = AvFILLp (padlist); 530 I32 i = AvFILLp (padlist);
356 while (i >= 0) 531
532 while (i > 0) /* special-case index 0 */
357 { 533 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 534 /* we try to be extra-careful here */
359 if (svp) 535 AV *av = (AV *)AvARRAY (padlist)[i--];
360 { 536 I32 j = AvFILLp (av);
361 SV *sv; 537
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 538 while (j >= 0)
539 SvREFCNT_dec (AvARRAY (av)[j--]);
540
541 AvFILLp (av) = -1;
363 SvREFCNT_dec (sv); 542 SvREFCNT_dec (av);
364
365 SvREFCNT_dec (*svp);
366 }
367 } 543 }
368 544
545 SvREFCNT_dec (AvARRAY (padlist)[0]);
546
547 AvFILLp (padlist) = -1;
369 SvREFCNT_dec ((SV*)padlist); 548 SvREFCNT_dec ((SV*)padlist);
370 } 549 }
371} 550}
372 551
373static int 552static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 553coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 554{
376 AV *padlist; 555 AV *padlist;
377 AV *av = (AV *)mg->mg_obj; 556 AV *av = (AV *)mg->mg_obj;
557
558 /* perl manages to free our internal AV and _then_ call us */
559 if (IN_DESTRUCT)
560 return 0;
378 561
379 /* casting is fun. */ 562 /* casting is fun. */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 563 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
381 free_padlist (aTHX_ padlist); 564 free_padlist (aTHX_ padlist);
382 565
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 566 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 567
385 return 0; 568 return 0;
386} 569}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 570
391static MGVTBL coro_cv_vtbl = { 571static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 572 0, 0, 0, 0,
393 coro_cv_free 573 coro_cv_free
394}; 574};
395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438 575
439/* the next two functions merely cache the padlists */ 576/* the next two functions merely cache the padlists */
440static void 577static void
441get_padlist (pTHX_ CV *cv) 578get_padlist (pTHX_ CV *cv)
442{ 579{
… …
448 else 585 else
449 { 586 {
450#if CORO_PREFER_PERL_FUNCTIONS 587#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 588 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 589 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 590 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 591 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 592 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 593 SvREFCNT_dec (cp);
457#else 594#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 595 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 596#endif
460 } 597 }
461} 598}
462 599
463static void 600static void
… …
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 607 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 608
472 av = (AV *)mg->mg_obj; 609 av = (AV *)mg->mg_obj;
473 610
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 611 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 612 av_extend (av, AvFILLp (av) + 1);
476 613
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 614 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 615}
479 616
480/** load & save, init *******************************************************/ 617/** load & save, init *******************************************************/
618
619/* swap sv heads, at least logically */
620static void
621swap_svs (pTHX_ Coro__State c)
622{
623 int i;
624
625 for (i = 0; i <= AvFILLp (c->swap_sv); )
626 {
627 SV *a = AvARRAY (c->swap_sv)[i++];
628 SV *b = AvARRAY (c->swap_sv)[i++];
629
630 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
631 SV tmp;
632
633 /* swap sv_any */
634 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
635
636 /* swap sv_flags */
637 SvFLAGS (&tmp) = SvFLAGS (a);
638 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
639 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
640
641#if PERL_VERSION_ATLEAST (5,10,0)
642 /* perl 5.10 complicates this _quite_ a bit, but it also is
643 * much faster, so no quarrels here. alternatively, we could
644 * sv_upgrade to avoid this.
645 */
646 {
647 /* swap sv_u */
648 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
649
650 /* if SvANY points to the head, we need to adjust the pointers,
651 * as the pointer for a still points to b, and maybe vice versa.
652 */
653 #define svany_in_head(type) \
654 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
655
656 if (svany_in_head (SvTYPE (a)))
657 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
658
659 if (svany_in_head (SvTYPE (b)))
660 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
661 }
662#endif
663 }
664}
665
666#define SWAP_SVS(coro) \
667 if (expect_false ((coro)->swap_sv)) \
668 swap_svs (aTHX_ (coro))
669
670static void
671on_enterleave_call (pTHX_ SV *cb);
481 672
482static void 673static void
483load_perl (pTHX_ Coro__State c) 674load_perl (pTHX_ Coro__State c)
484{ 675{
485 perl_slots *slot = c->slot; 676 perl_slots *slot = c->slot;
486 c->slot = 0; 677 c->slot = 0;
487 678
488 PL_mainstack = c->mainstack; 679 PL_mainstack = c->mainstack;
489 680
490 GvSV (PL_defgv) = slot->defsv; 681 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav; 682 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv; 683 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv; 684 GvSV (irsgv) = slot->irsgv;
685 GvHV (PL_hintgv) = slot->hinthv;
494 686
495 #define VAR(name,type) PL_ ## name = slot->name; 687 #define VAR(name,type) PL_ ## name = slot->name;
496 # include "state.h" 688 # include "state.h"
497 #undef VAR 689 #undef VAR
498 690
… …
512 PUTBACK; 704 PUTBACK;
513 } 705 }
514 706
515 slf_frame = c->slf_frame; 707 slf_frame = c->slf_frame;
516 CORO_THROW = c->except; 708 CORO_THROW = c->except;
709
710 if (expect_false (enable_times))
711 {
712 if (expect_false (!times_valid))
713 coro_times_update ();
714
715 coro_times_sub (c);
716 }
717
718 if (expect_false (c->on_enter))
719 {
720 int i;
721
722 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
723 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
724 }
725
726 SWAP_SVS (c);
517} 727}
518 728
519static void 729static void
520save_perl (pTHX_ Coro__State c) 730save_perl (pTHX_ Coro__State c)
521{ 731{
732 SWAP_SVS (c);
733
734 if (expect_false (c->on_leave))
735 {
736 int i;
737
738 for (i = AvFILLp (c->on_leave); i >= 0; --i)
739 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
740 }
741
742 times_valid = 0;
743
744 if (expect_false (enable_times))
745 {
746 coro_times_update (); times_valid = 1;
747 coro_times_add (c);
748 }
749
522 c->except = CORO_THROW; 750 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 751 c->slf_frame = slf_frame;
524 752
525 { 753 {
526 dSP; 754 dSP;
… …
539 { 767 {
540 while (expect_true (cxix >= 0)) 768 while (expect_true (cxix >= 0))
541 { 769 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 770 PERL_CONTEXT *cx = &ccstk[cxix--];
543 771
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 772 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 773 {
546 CV *cv = cx->blk_sub.cv; 774 CV *cv = cx->blk_sub.cv;
547 775
548 if (expect_true (CvDEPTH (cv))) 776 if (expect_true (CvDEPTH (cv)))
549 { 777 {
… …
573 /* we manually unroll here, as usually 2 slots is enough */ 801 /* we manually unroll here, as usually 2 slots is enough */
574 if (SLOT_COUNT >= 1) CXINC; 802 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC; 803 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC; 804 if (SLOT_COUNT >= 3) CXINC;
577 { 805 {
578 int i; 806 unsigned int i;
579 for (i = 3; i < SLOT_COUNT; ++i) 807 for (i = 3; i < SLOT_COUNT; ++i)
580 CXINC; 808 CXINC;
581 } 809 }
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 810 cxstack_ix -= SLOT_COUNT; /* undo allocation */
583 811
584 c->mainstack = PL_mainstack; 812 c->mainstack = PL_mainstack;
585 813
586 { 814 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 815 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 816
589 slot->defav = GvAV (PL_defgv); 817 slot->defav = GvAV (PL_defgv);
590 slot->defsv = DEFSV; 818 slot->defsv = DEFSV;
591 slot->errsv = ERRSV; 819 slot->errsv = ERRSV;
592 slot->irsgv = GvSV (irsgv); 820 slot->irsgv = GvSV (irsgv);
821 slot->hinthv = GvHV (PL_hintgv);
593 822
594 #define VAR(name,type) slot->name = PL_ ## name; 823 #define VAR(name,type) slot->name = PL_ ## name;
595 # include "state.h" 824 # include "state.h"
596 #undef VAR 825 #undef VAR
597 } 826 }
… …
602 * of perl.c:init_stacks, except that it uses less memory 831 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 832 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 833 * not usually need a lot of stackspace.
605 */ 834 */
606#if CORO_PREFER_PERL_FUNCTIONS 835#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 836# define coro_init_stacks(thx) init_stacks ()
608#else 837#else
609static void 838static void
610coro_init_stacks (pTHX) 839coro_init_stacks (pTHX)
611{ 840{
612 PL_curstackinfo = new_stackinfo(32, 8); 841 PL_curstackinfo = new_stackinfo(32, 8);
… …
675#if !PERL_VERSION_ATLEAST (5,10,0) 904#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 905 Safefree (PL_retstack);
677#endif 906#endif
678} 907}
679 908
909#define CORO_RSS \
910 rss += sizeof (SYM (curstackinfo)); \
911 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
912 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
913 rss += SYM (tmps_max) * sizeof (SV *); \
914 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
915 rss += SYM (scopestack_max) * sizeof (I32); \
916 rss += SYM (savestack_max) * sizeof (ANY);
917
680static size_t 918static size_t
681coro_rss (pTHX_ struct coro *coro) 919coro_rss (pTHX_ struct coro *coro)
682{ 920{
683 size_t rss = sizeof (*coro); 921 size_t rss = sizeof (*coro);
684 922
685 if (coro->mainstack) 923 if (coro->mainstack)
686 { 924 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 925 if (coro->flags & CF_RUNNING)
691 { 926 {
692 slot = &tmp_slot; 927 #define SYM(sym) PL_ ## sym
693 928 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 929 #undef SYM
697 } 930 }
698 else 931 else
699 slot = coro->slot;
700
701 if (slot)
702 { 932 {
703 rss += sizeof (slot->curstackinfo); 933 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 934 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 935 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 936 }
715 } 937 }
716 938
717 return rss; 939 return rss;
718} 940}
… …
731#endif 953#endif
732 954
733/* 955/*
734 * This overrides the default magic get method of %SIG elements. 956 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 957 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 958 * and instead of trying to save and restore the hash elements, we just provide
737 * readback here. 959 * readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 960 */
742static int 961static int
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 962coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 963{
745 const char *s = MgPV_nolen_const (mg); 964 const char *s = MgPV_nolen_const (mg);
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1017 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 1018
800 if (svp) 1019 if (svp)
801 { 1020 {
802 SV *old = *svp; 1021 SV *old = *svp;
803 *svp = newSVsv (sv); 1022 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 1023 SvREFCNT_dec (old);
805 return 0; 1024 return 0;
806 } 1025 }
807 } 1026 }
808 1027
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 1039slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 1040{
822 return 0; 1041 return 0;
823} 1042}
824 1043
825static UNOP coro_setup_op; 1044static int
1045slf_check_repeat (pTHX_ struct CoroSLF *frame)
1046{
1047 return 1;
1048}
1049
1050static UNOP init_perl_op;
826 1051
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1052static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1053init_perl (pTHX_ struct coro *coro)
829{ 1054{
830 /* 1055 /*
831 * emulate part of the perl startup here. 1056 * emulate part of the perl startup here.
832 */ 1057 */
833 coro_init_stacks (aTHX); 1058 coro_init_stacks (aTHX);
834 1059
835 PL_runops = RUNOPS_DEFAULT; 1060 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1061 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1062 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1063 PL_comppad = 0;
1064 PL_comppad_name = 0;
1065 PL_comppad_name_fill = 0;
1066 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1067 PL_curpm = 0;
840 PL_curpad = 0; 1068 PL_curpad = 0;
841 PL_localizing = 0; 1069 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1070 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1071#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1072 PL_parser = 0;
846#endif 1073#endif
1074 PL_hints = 0;
847 1075
848 /* recreate the die/warn hooks */ 1076 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1077 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1078 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 1079
852 GvSV (PL_defgv) = newSV (0); 1080 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1081 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1082 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1083 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1084 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1085 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1086 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1087
859 { 1088 {
860 dSP; 1089 dSP;
861 UNOP myop; 1090 UNOP myop;
862 1091
863 Zero (&myop, 1, UNOP); 1092 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1093 myop.op_next = Nullop;
1094 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1095 myop.op_flags = OPf_WANT_VOID;
866 1096
867 PUSHMARK (SP); 1097 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1098 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1099 PUTBACK;
870 PL_op = (OP *)&myop; 1100 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1102 }
874 1103
875 /* this newly created coroutine might be run on an existing cctx which most 1104 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1105 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1106 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1107 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1108 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880 1109
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1110 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1111 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1112 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1113 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1114 /* no flags etc. required, as an init function won't be called */
886 1115
887 PL_op = (OP *)&coro_setup_op; 1116 PL_op = (OP *)&init_perl_op;
888 1117
889 /* copy throw, in case it was set before coro_setup */ 1118 /* copy throw, in case it was set before init_perl */
890 CORO_THROW = coro->except; 1119 CORO_THROW = coro->except;
891}
892 1120
1121 SWAP_SVS (coro);
1122
1123 if (expect_false (enable_times))
1124 {
1125 coro_times_update ();
1126 coro_times_sub (coro);
1127 }
1128}
1129
893static void 1130static void
894coro_destruct (pTHX_ struct coro *coro) 1131coro_unwind_stacks (pTHX)
895{ 1132{
896 if (!IN_DESTRUCT) 1133 if (!IN_DESTRUCT)
897 { 1134 {
898 /* restore all saved variables and stuff */ 1135 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1136 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1144 POPSTACK_TO (PL_mainstack);
908 1145
909 /* unwind main stack */ 1146 /* unwind main stack */
910 dounwind (-1); 1147 dounwind (-1);
911 } 1148 }
1149}
912 1150
913 SvREFCNT_dec (GvSV (PL_defgv)); 1151static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1152destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1153{
916 SvREFCNT_dec (PL_defoutgv); 1154 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1155
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1156 {
1157 struct coro *current = SvSTATE_current;
1158
1159 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1160
1161 save_perl (aTHX_ current);
1162 load_perl (aTHX_ coro);
1163
1164 coro_unwind_stacks (aTHX);
1165 coro_destruct_stacks (aTHX);
1166
1167 /* restore swapped sv's */
1168 SWAP_SVS (coro);
1169
1170 // now save some sv's to be free'd later
1171 svf [0] = GvSV (PL_defgv);
1172 svf [1] = (SV *)GvAV (PL_defgv);
1173 svf [2] = GvSV (PL_errgv);
1174 svf [3] = (SV *)PL_defoutgv;
1175 svf [4] = PL_rs;
1176 svf [5] = GvSV (irsgv);
1177 svf [6] = (SV *)GvHV (PL_hintgv);
1178 svf [7] = PL_diehook;
1179 svf [8] = PL_warnhook;
1180 assert (9 == sizeof (svf) / sizeof (*svf));
1181
1182 load_perl (aTHX_ current);
1183 }
1184
1185 {
1186 unsigned int i;
1187
1188 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1189 SvREFCNT_dec (svf [i]);
1190
923 SvREFCNT_dec (coro->saved_deffh); 1191 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (CORO_THROW); 1192 SvREFCNT_dec (coro->rouse_cb);
925 1193 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1194 SvREFCNT_dec (coro->invoke_av);
1195 }
927} 1196}
928 1197
929INLINE void 1198INLINE void
930free_coro_mortal (pTHX) 1199free_coro_mortal (pTHX)
931{ 1200{
… …
939static int 1208static int
940runops_trace (pTHX) 1209runops_trace (pTHX)
941{ 1210{
942 COP *oldcop = 0; 1211 COP *oldcop = 0;
943 int oldcxix = -2; 1212 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1213
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1214 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1215 {
949 PERL_ASYNC_CHECK (); 1216 PERL_ASYNC_CHECK ();
950 1217
951 if (cctx->flags & CC_TRACE_ALL) 1218 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1219 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1220 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1221 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1222 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1223 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1224 AV *av = newAV (); /* return values */
958 SV **cb; 1225 SV **cb;
… …
995 1262
996 if (PL_curcop != &PL_compiling) 1263 if (PL_curcop != &PL_compiling)
997 { 1264 {
998 SV **cb; 1265 SV **cb;
999 1266
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1267 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1268 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1269 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1270
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1271 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1272 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1273 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1274 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1275 SV *fullname = sv_2mortal (newSV (0));
1010 1276
1011 if (isGV (gv)) 1277 if (isGV (gv))
… …
1016 SAVETMPS; 1282 SAVETMPS;
1017 EXTEND (SP, 3); 1283 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1284 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1285 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1286 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1287 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1288 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1289 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1290 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1291 SPAGAIN;
1026 FREETMPS; 1292 FREETMPS;
… …
1029 } 1295 }
1030 1296
1031 oldcxix = cxstack_ix; 1297 oldcxix = cxstack_ix;
1032 } 1298 }
1033 1299
1034 if (cctx->flags & CC_TRACE_LINE) 1300 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1301 {
1036 dSP; 1302 dSP;
1037 1303
1038 PL_runops = RUNOPS_DEFAULT; 1304 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1305 ENTER;
… …
1058 1324
1059 TAINT_NOT; 1325 TAINT_NOT;
1060 return 0; 1326 return 0;
1061} 1327}
1062 1328
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1329static struct CoroSLF cctx_ssl_frame;
1065 1330
1066static void 1331static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1332slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1333{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1334 ta->prev = 0;
1071} 1335}
1072 1336
1073static int 1337static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1338slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1339{
… …
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1342 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1343}
1080 1344
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1345/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1346static void NOINLINE
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1347cctx_prepare (pTHX)
1084{ 1348{
1085 PL_top_env = &PL_start_env; 1349 PL_top_env = &PL_start_env;
1086 1350
1087 if (cctx->flags & CC_TRACE) 1351 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1352 PL_runops = runops_trace;
1089 1353
1090 /* we already must be executing an SLF op, there is no other valid way 1354 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1355 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1356 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1357 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1358
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1359 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1360 cctx_ssl_frame = slf_frame;
1098 1361
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1362 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1363 slf_frame.check = slf_check_set_stacklevel;
1101} 1364}
… …
1124 /* normally we would need to skip the entersub here */ 1387 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1388 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1389 /* PL_nop = PL_nop->op_next */
1127 1390
1128 /* inject a fake subroutine call to cctx_init */ 1391 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1392 cctx_prepare (aTHX);
1130 1393
1131 /* cctx_run is the alternative tail of transfer() */ 1394 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1395 transfer_tail (aTHX);
1133 1396
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1397 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1398 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1399 perl_run (PL_curinterp);
1400 /*
1401 * Unfortunately, there is no way to get at the return values of the
1402 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1403 * runtime errors here, as this is just a random interpreter, not a thread.
1404 */
1137 1405
1138 /* 1406 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1407 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1408 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1409 * reason for perl_run to return. We try to exit by jumping to the
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1410 * bootstrap-time "top" top_env, as we cannot restore the "main"
1143 * coroutine as Coro has no such concept 1411 * coroutine as Coro has no such concept.
1412 * This actually isn't valid with the pthread backend, but OSes requiring
1413 * that backend are too broken to do it in a standards-compliant way.
1144 */ 1414 */
1145 PL_top_env = main_top_env; 1415 PL_top_env = main_top_env;
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1416 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1417 }
1148} 1418}
… …
1225cctx_destroy (coro_cctx *cctx) 1495cctx_destroy (coro_cctx *cctx)
1226{ 1496{
1227 if (!cctx) 1497 if (!cctx)
1228 return; 1498 return;
1229 1499
1500 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1501
1230 --cctx_count; 1502 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1503 coro_destroy (&cctx->cctx);
1232 1504
1233 /* coro_transfer creates new, empty cctx's */ 1505 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr) 1506 if (cctx->sptr)
… …
1297 /* TODO: throwing up here is considered harmful */ 1569 /* TODO: throwing up here is considered harmful */
1298 1570
1299 if (expect_true (prev != next)) 1571 if (expect_true (prev != next))
1300 { 1572 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1573 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1574 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1575
1304 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED)) 1576 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1577 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1578
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1579#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1580 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1581 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1582#endif
… …
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1588transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1589{
1321 dSTACKLEVEL; 1590 dSTACKLEVEL;
1322 1591
1323 /* sometimes transfer is only called to set idle_sp */ 1592 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1593 if (expect_false (!prev))
1325 { 1594 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1595 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1596 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1597 }
1329 else if (expect_true (prev != next)) 1598 else if (expect_true (prev != next))
1330 { 1599 {
1331 coro_cctx *prev__cctx; 1600 coro_cctx *cctx_prev;
1332 1601
1333 if (expect_false (prev->flags & CF_NEW)) 1602 if (expect_false (prev->flags & CF_NEW))
1334 { 1603 {
1335 /* create a new empty/source context */ 1604 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1605 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1606 prev->flags |= CF_RUNNING;
1339 } 1607 }
1340 1608
1341 prev->flags &= ~CF_RUNNING; 1609 prev->flags &= ~CF_RUNNING;
… …
1347 if (expect_false (next->flags & CF_NEW)) 1615 if (expect_false (next->flags & CF_NEW))
1348 { 1616 {
1349 /* need to start coroutine */ 1617 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1618 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1619 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1620 init_perl (aTHX_ next);
1353 } 1621 }
1354 else 1622 else
1355 load_perl (aTHX_ next); 1623 load_perl (aTHX_ next);
1356 1624
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1625 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1626 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1627 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1628 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1629 && !force_cctx
1364 )) 1630 ))
1365 { 1631 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1632 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1633 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1634
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1635 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1636 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1637 if (expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1638 if (expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1639 next->cctx = cctx_get (aTHX);
1376 1640
1377 cctx_put (prev__cctx); 1641 cctx_put (cctx_current);
1378 } 1642 }
1643 else
1644 prev->cctx = cctx_current;
1379 1645
1380 ++next->usecount; 1646 ++next->usecount;
1381 1647
1382 if (expect_true (!next->cctx)) 1648 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1649 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1650
1385 if (expect_false (prev__cctx != next->cctx)) 1651 next->cctx = 0;
1652
1653 if (expect_false (cctx_prev != cctx_current))
1386 { 1654 {
1387 prev__cctx->top_env = PL_top_env; 1655 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1656 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1657 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1658 }
1391 1659
1392 transfer_tail (aTHX); 1660 transfer_tail (aTHX);
1393 } 1661 }
1394} 1662}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1670coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1671{
1404 if (coro->flags & CF_DESTROYED) 1672 if (coro->flags & CF_DESTROYED)
1405 return 0; 1673 return 0;
1406 1674
1407 if (coro->on_destroy) 1675 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1676 coro->on_destroy (aTHX_ coro);
1409 1677
1410 coro->flags |= CF_DESTROYED; 1678 coro->flags |= CF_DESTROYED;
1411 1679
1412 if (coro->flags & CF_READY) 1680 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1684 --coro_nready;
1417 } 1685 }
1418 else 1686 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1687 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1688
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1689 if (coro->mainstack
1422 { 1690 && coro->mainstack != main_mainstack
1423 struct coro temp; 1691 && coro->slot
1424 1692 && !PL_dirty)
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1693 destroy_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439 1694
1440 if (coro->next) coro->next->prev = coro->prev; 1695 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1696 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1697 if (coro == coro_first) coro_first = coro->next;
1698
1699 cctx_destroy (coro->cctx);
1700 SvREFCNT_dec (coro->startcv);
1701 SvREFCNT_dec (coro->args);
1702 SvREFCNT_dec (coro->swap_sv);
1703 SvREFCNT_dec (CORO_THROW);
1443 1704
1444 return 1; 1705 return 1;
1445} 1706}
1446 1707
1447static int 1708static int
… …
1502/** Coro ********************************************************************/ 1763/** Coro ********************************************************************/
1503 1764
1504INLINE void 1765INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1766coro_enq (pTHX_ struct coro *coro)
1506{ 1767{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1768 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1769
1510INLINE SV * 1770 SvREFCNT_inc_NN (coro->hv);
1771
1772 coro->next_ready = 0;
1773 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1774 ready [1] = coro;
1775}
1776
1777INLINE struct coro *
1511coro_deq (pTHX) 1778coro_deq (pTHX)
1512{ 1779{
1513 int prio; 1780 int prio;
1514 1781
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1782 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1783 {
1517 return av_shift (coro_ready [prio]); 1784 struct coro **ready = coro_ready [prio];
1785
1786 if (ready [0])
1787 {
1788 struct coro *coro = ready [0];
1789 ready [0] = coro->next_ready;
1790 return coro;
1791 }
1792 }
1518 1793
1519 return 0; 1794 return 0;
1795}
1796
1797static void
1798invoke_sv_ready_hook_helper (void)
1799{
1800 dTHX;
1801 dSP;
1802
1803 ENTER;
1804 SAVETMPS;
1805
1806 PUSHMARK (SP);
1807 PUTBACK;
1808 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1809
1810 FREETMPS;
1811 LEAVE;
1520} 1812}
1521 1813
1522static int 1814static int
1523api_ready (pTHX_ SV *coro_sv) 1815api_ready (pTHX_ SV *coro_sv)
1524{ 1816{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1817 struct coro *coro = SvSTATE (coro_sv);
1533 1818
1534 if (coro->flags & CF_READY) 1819 if (coro->flags & CF_READY)
1535 return 0; 1820 return 0;
1536 1821
1537 coro->flags |= CF_READY; 1822 coro->flags |= CF_READY;
1538 1823
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1824 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1825
1545 if (sv_hook) 1826 if (!coro_nready++)
1546 { 1827 if (coroapi.readyhook)
1547 dSP; 1828 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1829
1563 return 1; 1830 return 1;
1564} 1831}
1565 1832
1566static int 1833static int
1567api_is_ready (pTHX_ SV *coro_sv) 1834api_is_ready (pTHX_ SV *coro_sv)
1568{ 1835{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1836 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1837}
1571 1838
1839/* expects to own a reference to next->hv */
1572INLINE void 1840INLINE void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1841prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1842{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1843 SV *prev_sv = SvRV (coro_current);
1844
1614 ta->prev = SvSTATE_hv (prev_sv); 1845 ta->prev = SvSTATE_hv (prev_sv);
1846 ta->next = next;
1847
1615 TRANSFER_CHECK (*ta); 1848 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1849
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1850 SvRV_set (coro_current, (SV *)next->hv);
1619 1851
1620 free_coro_mortal (aTHX); 1852 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1853 coro_mortal = prev_sv;
1622} 1854}
1623 1855
1856static void
1857prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1858{
1859 for (;;)
1860 {
1861 struct coro *next = coro_deq (aTHX);
1862
1863 if (expect_true (next))
1864 {
1865 /* cannot transfer to destroyed coros, skip and look for next */
1866 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1867 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1868 else
1869 {
1870 next->flags &= ~CF_READY;
1871 --coro_nready;
1872
1873 prepare_schedule_to (aTHX_ ta, next);
1874 break;
1875 }
1876 }
1877 else
1878 {
1879 /* nothing to schedule: call the idle handler */
1880 if (SvROK (sv_idle)
1881 && SvOBJECT (SvRV (sv_idle)))
1882 {
1883 if (SvRV (sv_idle) == SvRV (coro_current))
1884 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1885
1886 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1887 api_ready (aTHX_ SvRV (sv_idle));
1888 --coro_nready;
1889 }
1890 else
1891 {
1892 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1893 dSP;
1894
1895 ENTER;
1896 SAVETMPS;
1897
1898 PUSHMARK (SP);
1899 PUTBACK;
1900 call_sv (sv_idle, G_VOID | G_DISCARD);
1901
1902 FREETMPS;
1903 LEAVE;
1904 }
1905 }
1906 }
1907}
1908
1624INLINE void 1909INLINE void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1910prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1911{
1627 api_ready (aTHX_ coro_current); 1912 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1913 prepare_schedule (aTHX_ ta);
… …
1647{ 1932{
1648 struct coro_transfer_args ta; 1933 struct coro_transfer_args ta;
1649 1934
1650 prepare_schedule (aTHX_ &ta); 1935 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1936 TRANSFER (ta, 1);
1937}
1938
1939static void
1940api_schedule_to (pTHX_ SV *coro_sv)
1941{
1942 struct coro_transfer_args ta;
1943 struct coro *next = SvSTATE (coro_sv);
1944
1945 SvREFCNT_inc_NN (coro_sv);
1946 prepare_schedule_to (aTHX_ &ta, next);
1652} 1947}
1653 1948
1654static int 1949static int
1655api_cede (pTHX) 1950api_cede (pTHX)
1656{ 1951{
… …
1685static void 1980static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 1981api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 1982{
1688 struct coro *coro = SvSTATE (coro_sv); 1983 struct coro *coro = SvSTATE (coro_sv);
1689 1984
1985 if (coro->flags & CF_RUNNING)
1986 croak ("cannot enable tracing on a running coroutine, caught");
1987
1690 if (flags & CC_TRACE) 1988 if (flags & CC_TRACE)
1691 { 1989 {
1692 if (!coro->cctx) 1990 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 1991 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 1992 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 1993 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 1994
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1995 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 1996 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1997 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 1998 {
… …
1703 if (coro->flags & CF_RUNNING) 2001 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 2002 PL_runops = RUNOPS_DEFAULT;
1705 else 2003 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 2004 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 2005 }
2006}
2007
2008static void
2009coro_call_on_destroy (pTHX_ struct coro *coro)
2010{
2011 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2012 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2013
2014 if (on_destroyp)
2015 {
2016 AV *on_destroy = (AV *)SvRV (*on_destroyp);
2017
2018 while (AvFILLp (on_destroy) >= 0)
2019 {
2020 dSP; /* don't disturb outer sp */
2021 SV *cb = av_pop (on_destroy);
2022
2023 PUSHMARK (SP);
2024
2025 if (statusp)
2026 {
2027 int i;
2028 AV *status = (AV *)SvRV (*statusp);
2029 EXTEND (SP, AvFILLp (status) + 1);
2030
2031 for (i = 0; i <= AvFILLp (status); ++i)
2032 PUSHs (AvARRAY (status)[i]);
2033 }
2034
2035 PUTBACK;
2036 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2037 }
2038 }
2039}
2040
2041static void
2042slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2043{
2044 int i;
2045 HV *hv = (HV *)SvRV (coro_current);
2046 AV *av = newAV ();
2047
2048 /* items are actually not so common, so optimise for this case */
2049 if (items)
2050 {
2051 av_extend (av, items - 1);
2052
2053 for (i = 0; i < items; ++i)
2054 av_push (av, SvREFCNT_inc_NN (arg [i]));
2055 }
2056
2057 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2058
2059 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2060 api_ready (aTHX_ sv_manager);
2061
2062 frame->prepare = prepare_schedule;
2063 frame->check = slf_check_repeat;
2064
2065 /* as a minor optimisation, we could unwind all stacks here */
2066 /* but that puts extra pressure on pp_slf, and is not worth much */
2067 /*coro_unwind_stacks (aTHX);*/
2068}
2069
2070/*****************************************************************************/
2071/* async pool handler */
2072
2073static int
2074slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2075{
2076 HV *hv = (HV *)SvRV (coro_current);
2077 struct coro *coro = (struct coro *)frame->data;
2078
2079 if (!coro->invoke_cb)
2080 return 1; /* loop till we have invoke */
2081 else
2082 {
2083 hv_store (hv, "desc", sizeof ("desc") - 1,
2084 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2085
2086 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2087
2088 {
2089 dSP;
2090 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2091 PUTBACK;
2092 }
2093
2094 SvREFCNT_dec (GvAV (PL_defgv));
2095 GvAV (PL_defgv) = coro->invoke_av;
2096 coro->invoke_av = 0;
2097
2098 return 0;
2099 }
2100}
2101
2102static void
2103slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 HV *hv = (HV *)SvRV (coro_current);
2106 struct coro *coro = SvSTATE_hv ((SV *)hv);
2107
2108 if (expect_true (coro->saved_deffh))
2109 {
2110 /* subsequent iteration */
2111 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2112 coro->saved_deffh = 0;
2113
2114 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2115 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2116 {
2117 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2118 coro->invoke_av = newAV ();
2119
2120 frame->prepare = prepare_nop;
2121 }
2122 else
2123 {
2124 av_clear (GvAV (PL_defgv));
2125 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2126
2127 coro->prio = 0;
2128
2129 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2130 api_trace (aTHX_ coro_current, 0);
2131
2132 frame->prepare = prepare_schedule;
2133 av_push (av_async_pool, SvREFCNT_inc (hv));
2134 }
2135 }
2136 else
2137 {
2138 /* first iteration, simply fall through */
2139 frame->prepare = prepare_nop;
2140 }
2141
2142 frame->check = slf_check_pool_handler;
2143 frame->data = (void *)coro;
2144}
2145
2146/*****************************************************************************/
2147/* rouse callback */
2148
2149#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2150
2151static void
2152coro_rouse_callback (pTHX_ CV *cv)
2153{
2154 dXSARGS;
2155 SV *data = (SV *)S_GENSUB_ARG;
2156
2157 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2158 {
2159 /* first call, set args */
2160 SV *coro = SvRV (data);
2161 AV *av = newAV ();
2162
2163 SvRV_set (data, (SV *)av);
2164
2165 /* better take a full copy of the arguments */
2166 while (items--)
2167 av_store (av, items, newSVsv (ST (items)));
2168
2169 api_ready (aTHX_ coro);
2170 SvREFCNT_dec (coro);
2171 }
2172
2173 XSRETURN_EMPTY;
2174}
2175
2176static int
2177slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2178{
2179 SV *data = (SV *)frame->data;
2180
2181 if (CORO_THROW)
2182 return 0;
2183
2184 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2185 return 1;
2186
2187 /* now push all results on the stack */
2188 {
2189 dSP;
2190 AV *av = (AV *)SvRV (data);
2191 int i;
2192
2193 EXTEND (SP, AvFILLp (av) + 1);
2194 for (i = 0; i <= AvFILLp (av); ++i)
2195 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2196
2197 /* we have stolen the elements, so set length to zero and free */
2198 AvFILLp (av) = -1;
2199 av_undef (av);
2200
2201 PUTBACK;
2202 }
2203
2204 return 0;
2205}
2206
2207static void
2208slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 SV *cb;
2211
2212 if (items)
2213 cb = arg [0];
2214 else
2215 {
2216 struct coro *coro = SvSTATE_current;
2217
2218 if (!coro->rouse_cb)
2219 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2220
2221 cb = sv_2mortal (coro->rouse_cb);
2222 coro->rouse_cb = 0;
2223 }
2224
2225 if (!SvROK (cb)
2226 || SvTYPE (SvRV (cb)) != SVt_PVCV
2227 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2228 croak ("Coro::rouse_wait called with illegal callback argument,");
2229
2230 {
2231 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2232 SV *data = (SV *)S_GENSUB_ARG;
2233
2234 frame->data = (void *)data;
2235 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2236 frame->check = slf_check_rouse_wait;
2237 }
2238}
2239
2240static SV *
2241coro_new_rouse_cb (pTHX)
2242{
2243 HV *hv = (HV *)SvRV (coro_current);
2244 struct coro *coro = SvSTATE_hv (hv);
2245 SV *data = newRV_inc ((SV *)hv);
2246 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2247
2248 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2249 SvREFCNT_dec (data); /* magicext increases the refcount */
2250
2251 SvREFCNT_dec (coro->rouse_cb);
2252 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2253
2254 return cb;
1708} 2255}
1709 2256
1710/*****************************************************************************/ 2257/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2258/* schedule-like-function opcode (SLF) */
1712 2259
… …
1759static void 2306static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2307slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{ 2308{
1762 frame->prepare = prepare_schedule; 2309 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2310 frame->check = slf_check_nop;
2311}
2312
2313static void
2314slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2315{
2316 struct coro *next = (struct coro *)slf_frame.data;
2317
2318 SvREFCNT_inc_NN (next->hv);
2319 prepare_schedule_to (aTHX_ ta, next);
2320}
2321
2322static void
2323slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 if (!items)
2326 croak ("Coro::schedule_to expects a coroutine argument, caught");
2327
2328 frame->data = (void *)SvSTATE (arg [0]);
2329 frame->prepare = slf_prepare_schedule_to;
2330 frame->check = slf_check_nop;
2331}
2332
2333static void
2334slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2335{
2336 api_ready (aTHX_ SvRV (coro_current));
2337
2338 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1764} 2339}
1765 2340
1766static void 2341static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2342slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2343{
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2476 if (PL_op->op_flags & OPf_STACKED)
1902 { 2477 {
1903 if (items > slf_arga) 2478 if (items > slf_arga)
1904 { 2479 {
1905 slf_arga = items; 2480 slf_arga = items;
1906 free (slf_argv); 2481 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2482 New (0, slf_argv, slf_arga, SV *);
1908 } 2483 }
1909 2484
1910 slf_argc = items; 2485 slf_argc = items;
1911 2486
1912 for (i = 0; i < items; ++i) 2487 for (i = 0; i < items; ++i)
… …
1914 } 2489 }
1915 else 2490 else
1916 slf_argc = 0; 2491 slf_argc = 0;
1917 2492
1918 PL_op->op_ppaddr = pp_slf; 2493 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2494 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2495
1921 PL_op = (OP *)&slf_restore; 2496 PL_op = (OP *)&slf_restore;
2497}
2498
2499/*****************************************************************************/
2500/* dynamic wind */
2501
2502static void
2503on_enterleave_call (pTHX_ SV *cb)
2504{
2505 dSP;
2506
2507 PUSHSTACK;
2508
2509 PUSHMARK (SP);
2510 PUTBACK;
2511 call_sv (cb, G_VOID | G_DISCARD);
2512 SPAGAIN;
2513
2514 POPSTACK;
2515}
2516
2517static SV *
2518coro_avp_pop_and_free (pTHX_ AV **avp)
2519{
2520 AV *av = *avp;
2521 SV *res = av_pop (av);
2522
2523 if (AvFILLp (av) < 0)
2524 {
2525 *avp = 0;
2526 SvREFCNT_dec (av);
2527 }
2528
2529 return res;
2530}
2531
2532static void
2533coro_pop_on_enter (pTHX_ void *coro)
2534{
2535 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2536 SvREFCNT_dec (cb);
2537}
2538
2539static void
2540coro_pop_on_leave (pTHX_ void *coro)
2541{
2542 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2543 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2544}
1923 2545
1924/*****************************************************************************/ 2546/*****************************************************************************/
1925/* PerlIO::cede */ 2547/* PerlIO::cede */
1926 2548
… …
1995 PerlIOBuf_get_cnt, 2617 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2618 PerlIOBuf_set_ptrcnt,
1997}; 2619};
1998 2620
1999/*****************************************************************************/ 2621/*****************************************************************************/
2622/* Coro::Semaphore & Coro::Signal */
2623
2624static SV *
2625coro_waitarray_new (pTHX_ int count)
2626{
2627 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2628 AV *av = newAV ();
2629 SV **ary;
2630
2631 /* unfortunately, building manually saves memory */
2632 Newx (ary, 2, SV *);
2633 AvALLOC (av) = ary;
2634#if PERL_VERSION_ATLEAST (5,10,0)
2635 AvARRAY (av) = ary;
2636#else
2637 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2638 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2639 SvPVX ((SV *)av) = (char *)ary;
2640#endif
2641 AvMAX (av) = 1;
2642 AvFILLp (av) = 0;
2643 ary [0] = newSViv (count);
2644
2645 return newRV_noinc ((SV *)av);
2646}
2647
2000/* Coro::Semaphore */ 2648/* semaphore */
2001 2649
2002static void 2650static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2651coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{ 2652{
2005 SV *count_sv = AvARRAY (av)[0]; 2653 SV *count_sv = AvARRAY (av)[0];
… …
2017 AvARRAY (av)[0] = AvARRAY (av)[1]; 2665 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv; 2666 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av); 2667 cb = av_shift (av);
2020 2668
2021 if (SvOBJECT (cb)) 2669 if (SvOBJECT (cb))
2670 {
2022 api_ready (aTHX_ cb); 2671 api_ready (aTHX_ cb);
2023 else 2672 --count;
2024 croak ("callbacks not yet supported"); 2673 }
2674 else if (SvTYPE (cb) == SVt_PVCV)
2675 {
2676 dSP;
2677 PUSHMARK (SP);
2678 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2679 PUTBACK;
2680 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2681 }
2025 2682
2026 SvREFCNT_dec (cb); 2683 SvREFCNT_dec (cb);
2027
2028 --count;
2029 } 2684 }
2030} 2685}
2031 2686
2032static void 2687static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2688coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2115} 2770}
2116 2771
2117static void 2772static void
2118slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2773slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{ 2774{
2775 if (items >= 2)
2776 {
2777 /* callback form */
2778 AV *av = (AV *)SvRV (arg [0]);
2779 SV *cb_cv = s_get_cv_croak (arg [1]);
2780
2781 av_push (av, SvREFCNT_inc_NN (cb_cv));
2782
2783 if (SvIVX (AvARRAY (av)[0]) > 0)
2784 coro_semaphore_adjust (aTHX_ av, 0);
2785
2786 frame->prepare = prepare_nop;
2787 frame->check = slf_check_nop;
2788 }
2789 else
2790 {
2120 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 2791 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2121 frame->check = slf_check_semaphore_wait; 2792 frame->check = slf_check_semaphore_wait;
2793 }
2122} 2794}
2123 2795
2124/*****************************************************************************/ 2796/* signal */
2125/* gensub: simple closure generation utility */
2126 2797
2127#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2798static void
2128 2799coro_signal_wake (pTHX_ AV *av, int count)
2129/* create a closure from XS, returns a code reference */
2130/* the arg can be accessed via GENSUB_ARG from the callback */
2131/* the callback must use dXSARGS/XSRETURN */
2132static SV *
2133gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2134{ 2800{
2135 CV *cv = (CV *)newSV (0); 2801 SvIVX (AvARRAY (av)[0]) = 0;
2136 2802
2137 sv_upgrade ((SV *)cv, SVt_PVCV); 2803 /* now signal count waiters */
2804 while (count > 0 && AvFILLp (av) > 0)
2805 {
2806 SV *cb;
2138 2807
2139 CvANON_on (cv); 2808 /* swap first two elements so we can shift a waiter */
2140 CvISXSUB_on (cv); 2809 cb = AvARRAY (av)[0];
2141 CvXSUB (cv) = xsub; 2810 AvARRAY (av)[0] = AvARRAY (av)[1];
2142 GENSUB_ARG = arg; 2811 AvARRAY (av)[1] = cb;
2143 2812
2144 return newRV_noinc ((SV *)cv); 2813 cb = av_shift (av);
2814
2815 if (SvTYPE (cb) == SVt_PVCV)
2816 {
2817 dSP;
2818 PUSHMARK (SP);
2819 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2820 PUTBACK;
2821 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2822 }
2823 else
2824 {
2825 api_ready (aTHX_ cb);
2826 sv_setiv (cb, 0); /* signal waiter */
2827 }
2828
2829 SvREFCNT_dec (cb);
2830
2831 --count;
2832 }
2833}
2834
2835static int
2836slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2837{
2838 /* if we are about to throw, also stop waiting */
2839 return SvROK ((SV *)frame->data) && !CORO_THROW;
2840}
2841
2842static void
2843slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2844{
2845 AV *av = (AV *)SvRV (arg [0]);
2846
2847 if (items >= 2)
2848 {
2849 SV *cb_cv = s_get_cv_croak (arg [1]);
2850 av_push (av, SvREFCNT_inc_NN (cb_cv));
2851
2852 if (SvIVX (AvARRAY (av)[0]))
2853 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2854
2855 frame->prepare = prepare_nop;
2856 frame->check = slf_check_nop;
2857 }
2858 else if (SvIVX (AvARRAY (av)[0]))
2859 {
2860 SvIVX (AvARRAY (av)[0]) = 0;
2861 frame->prepare = prepare_nop;
2862 frame->check = slf_check_nop;
2863 }
2864 else
2865 {
2866 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2867
2868 av_push (av, waiter);
2869
2870 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2871 frame->prepare = prepare_schedule;
2872 frame->check = slf_check_signal_wait;
2873 }
2145} 2874}
2146 2875
2147/*****************************************************************************/ 2876/*****************************************************************************/
2148/* Coro::AIO */ 2877/* Coro::AIO */
2149 2878
… …
2160 2889
2161static void 2890static void
2162coro_aio_callback (pTHX_ CV *cv) 2891coro_aio_callback (pTHX_ CV *cv)
2163{ 2892{
2164 dXSARGS; 2893 dXSARGS;
2165 AV *state = (AV *)GENSUB_ARG; 2894 AV *state = (AV *)S_GENSUB_ARG;
2166 SV *coro = av_pop (state); 2895 SV *coro = av_pop (state);
2167 SV *data_sv = newSV (sizeof (struct io_state)); 2896 SV *data_sv = newSV (sizeof (struct io_state));
2168 2897
2169 av_extend (state, items); 2898 av_extend (state, items - 1);
2170 2899
2171 sv_upgrade (data_sv, SVt_PV); 2900 sv_upgrade (data_sv, SVt_PV);
2172 SvCUR_set (data_sv, sizeof (struct io_state)); 2901 SvCUR_set (data_sv, sizeof (struct io_state));
2173 SvPOK_only (data_sv); 2902 SvPOK_only (data_sv);
2174 2903
… …
2284 3013
2285 for (i = 0; i < items; ++i) 3014 for (i = 0; i < items; ++i)
2286 PUSHs (arg [i]); 3015 PUSHs (arg [i]);
2287 3016
2288 /* now push the callback closure */ 3017 /* now push the callback closure */
2289 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3018 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2290 3019
2291 /* now call the AIO function - we assume our request is uncancelable */ 3020 /* now call the AIO function - we assume our request is uncancelable */
2292 PUTBACK; 3021 PUTBACK;
2293 call_sv ((SV *)req, G_VOID | G_DISCARD); 3022 call_sv ((SV *)req, G_VOID | G_DISCARD);
2294 } 3023 }
2295 3024
2296 /* now that the requets is going, we loop toll we have a result */ 3025 /* now that the request is going, we loop till we have a result */
2297 frame->data = (void *)state; 3026 frame->data = (void *)state;
2298 frame->prepare = prepare_schedule; 3027 frame->prepare = prepare_schedule;
2299 frame->check = slf_check_aio_req; 3028 frame->check = slf_check_aio_req;
2300} 3029}
2301 3030
… …
2308 3037
2309 XSRETURN_EMPTY; 3038 XSRETURN_EMPTY;
2310} 3039}
2311 3040
2312/*****************************************************************************/ 3041/*****************************************************************************/
3042
3043#if CORO_CLONE
3044# include "clone.c"
3045#endif
3046
3047/*****************************************************************************/
3048
3049static SV *
3050coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3051{
3052 SV *coro_sv;
3053 struct coro *coro;
3054 MAGIC *mg;
3055 HV *hv;
3056 SV *cb;
3057 int i;
3058
3059 if (argc > 0)
3060 {
3061 cb = s_get_cv_croak (argv [0]);
3062
3063 if (!is_coro)
3064 {
3065 if (CvISXSUB (cb))
3066 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3067
3068 if (!CvROOT (cb))
3069 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3070 }
3071 }
3072
3073 Newz (0, coro, 1, struct coro);
3074 coro->args = newAV ();
3075 coro->flags = CF_NEW;
3076
3077 if (coro_first) coro_first->prev = coro;
3078 coro->next = coro_first;
3079 coro_first = coro;
3080
3081 coro->hv = hv = newHV ();
3082 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3083 mg->mg_flags |= MGf_DUP;
3084 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3085
3086 if (argc > 0)
3087 {
3088 av_extend (coro->args, argc + is_coro - 1);
3089
3090 if (is_coro)
3091 {
3092 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3093 cb = (SV *)cv_coro_run;
3094 }
3095
3096 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3097
3098 for (i = 1; i < argc; i++)
3099 av_push (coro->args, newSVsv (argv [i]));
3100 }
3101
3102 return coro_sv;
3103}
2313 3104
2314MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3105MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2315 3106
2316PROTOTYPES: DISABLE 3107PROTOTYPES: DISABLE
2317 3108
… …
2322 coro_thx = PERL_GET_CONTEXT; 3113 coro_thx = PERL_GET_CONTEXT;
2323# endif 3114# endif
2324#endif 3115#endif
2325 BOOT_PAGESIZE; 3116 BOOT_PAGESIZE;
2326 3117
3118 cctx_current = cctx_new_empty ();
3119
2327 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3120 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2328 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3121 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2329 3122
2330 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3123 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2331 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3124 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2350 3143
2351 { 3144 {
2352 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3145 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2353 3146
2354 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3147 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2355 hv_store_ent (PL_custom_op_names, slf, 3148 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2356 newSVpv ("coro_slf", 0), 0);
2357 3149
2358 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2359 hv_store_ent (PL_custom_op_descs, slf, 3151 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2360 newSVpv ("coro schedule like function", 0), 0);
2361 } 3152 }
2362 3153
2363 coroapi.ver = CORO_API_VERSION; 3154 coroapi.ver = CORO_API_VERSION;
2364 coroapi.rev = CORO_API_REVISION; 3155 coroapi.rev = CORO_API_REVISION;
2365 3156
… …
2370 coroapi.prepare_nop = prepare_nop; 3161 coroapi.prepare_nop = prepare_nop;
2371 coroapi.prepare_schedule = prepare_schedule; 3162 coroapi.prepare_schedule = prepare_schedule;
2372 coroapi.prepare_cede = prepare_cede; 3163 coroapi.prepare_cede = prepare_cede;
2373 coroapi.prepare_cede_notself = prepare_cede_notself; 3164 coroapi.prepare_cede_notself = prepare_cede_notself;
2374 3165
2375 { 3166 time_init ();
2376 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2377 3167
2378 if (!svp) croak ("Time::HiRes is required");
2379 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2380
2381 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2382 }
2383
2384 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3168 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2385} 3169}
2386 3170
2387SV * 3171SV *
2388new (char *klass, ...) 3172new (SV *klass, ...)
3173 ALIAS:
3174 Coro::new = 1
2389 CODE: 3175 CODE:
2390{ 3176 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2391 struct coro *coro; 3177 OUTPUT:
2392 MAGIC *mg;
2393 HV *hv;
2394 int i;
2395
2396 Newz (0, coro, 1, struct coro);
2397 coro->args = newAV ();
2398 coro->flags = CF_NEW;
2399
2400 if (coro_first) coro_first->prev = coro;
2401 coro->next = coro_first;
2402 coro_first = coro;
2403
2404 coro->hv = hv = newHV ();
2405 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2406 mg->mg_flags |= MGf_DUP;
2407 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2408
2409 av_extend (coro->args, items - 1);
2410 for (i = 1; i < items; i++)
2411 av_push (coro->args, newSVsv (ST (i)));
2412}
2413 OUTPUT:
2414 RETVAL 3178 RETVAL
2415 3179
2416void 3180void
2417transfer (...) 3181transfer (...)
2418 PROTOTYPE: $$ 3182 PROTOTYPE: $$
… …
2429void 3193void
2430_exit (int code) 3194_exit (int code)
2431 PROTOTYPE: $ 3195 PROTOTYPE: $
2432 CODE: 3196 CODE:
2433 _exit (code); 3197 _exit (code);
3198
3199SV *
3200clone (Coro::State coro)
3201 CODE:
3202{
3203#if CORO_CLONE
3204 struct coro *ncoro = coro_clone (aTHX_ coro);
3205 MAGIC *mg;
3206 /* TODO: too much duplication */
3207 ncoro->hv = newHV ();
3208 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3209 mg->mg_flags |= MGf_DUP;
3210 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3211#else
3212 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3213#endif
3214}
3215 OUTPUT:
3216 RETVAL
2434 3217
2435int 3218int
2436cctx_stacksize (int new_stacksize = 0) 3219cctx_stacksize (int new_stacksize = 0)
2437 PROTOTYPE: ;$ 3220 PROTOTYPE: ;$
2438 CODE: 3221 CODE:
… …
2488 eval = 1 3271 eval = 1
2489 CODE: 3272 CODE:
2490{ 3273{
2491 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3274 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2492 { 3275 {
2493 struct coro temp; 3276 struct coro *current = SvSTATE_current;
2494 3277
2495 if (!(coro->flags & CF_RUNNING)) 3278 if (current != coro)
2496 { 3279 {
2497 PUTBACK; 3280 PUTBACK;
2498 save_perl (aTHX_ &temp); 3281 save_perl (aTHX_ current);
2499 load_perl (aTHX_ coro); 3282 load_perl (aTHX_ coro);
3283 SPAGAIN;
2500 } 3284 }
2501 3285
2502 {
2503 dSP;
2504 ENTER;
2505 SAVETMPS;
2506 PUTBACK;
2507 PUSHSTACK; 3286 PUSHSTACK;
3287
2508 PUSHMARK (SP); 3288 PUSHMARK (SP);
3289 PUTBACK;
2509 3290
2510 if (ix) 3291 if (ix)
2511 eval_sv (coderef, 0); 3292 eval_sv (coderef, 0);
2512 else 3293 else
2513 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3294 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2514 3295
2515 POPSTACK; 3296 POPSTACK;
2516 SPAGAIN; 3297 SPAGAIN;
2517 FREETMPS;
2518 LEAVE;
2519 PUTBACK;
2520 }
2521 3298
2522 if (!(coro->flags & CF_RUNNING)) 3299 if (current != coro)
2523 { 3300 {
3301 PUTBACK;
2524 save_perl (aTHX_ coro); 3302 save_perl (aTHX_ coro);
2525 load_perl (aTHX_ &temp); 3303 load_perl (aTHX_ current);
2526 SPAGAIN; 3304 SPAGAIN;
2527 } 3305 }
2528 } 3306 }
2529} 3307}
2530 3308
… …
2534 ALIAS: 3312 ALIAS:
2535 is_ready = CF_READY 3313 is_ready = CF_READY
2536 is_running = CF_RUNNING 3314 is_running = CF_RUNNING
2537 is_new = CF_NEW 3315 is_new = CF_NEW
2538 is_destroyed = CF_DESTROYED 3316 is_destroyed = CF_DESTROYED
3317 is_suspended = CF_SUSPENDED
2539 CODE: 3318 CODE:
2540 RETVAL = boolSV (coro->flags & ix); 3319 RETVAL = boolSV (coro->flags & ix);
2541 OUTPUT: 3320 OUTPUT:
2542 RETVAL 3321 RETVAL
2543 3322
2544void 3323void
2545throw (Coro::State self, SV *throw = &PL_sv_undef) 3324throw (Coro::State self, SV *exception = &PL_sv_undef)
2546 PROTOTYPE: $;$ 3325 PROTOTYPE: $;$
2547 CODE: 3326 CODE:
2548{ 3327{
2549 struct coro *current = SvSTATE_current; 3328 struct coro *current = SvSTATE_current;
2550 SV **throwp = self == current ? &CORO_THROW : &self->except; 3329 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2551 SvREFCNT_dec (*throwp); 3330 SvREFCNT_dec (*exceptionp);
2552 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3331 SvGETMAGIC (exception);
3332 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2553} 3333}
2554 3334
2555void 3335void
2556api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3336api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2557 PROTOTYPE: $;$ 3337 PROTOTYPE: $;$
… …
2559 3339
2560SV * 3340SV *
2561has_cctx (Coro::State coro) 3341has_cctx (Coro::State coro)
2562 PROTOTYPE: $ 3342 PROTOTYPE: $
2563 CODE: 3343 CODE:
2564 RETVAL = boolSV (!!coro->cctx); 3344 /* maybe manage the running flag differently */
3345 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2565 OUTPUT: 3346 OUTPUT:
2566 RETVAL 3347 RETVAL
2567 3348
2568int 3349int
2569is_traced (Coro::State coro) 3350is_traced (Coro::State coro)
… …
2589 3370
2590void 3371void
2591force_cctx () 3372force_cctx ()
2592 PROTOTYPE: 3373 PROTOTYPE:
2593 CODE: 3374 CODE:
2594 SvSTATE_current->cctx->idle_sp = 0; 3375 cctx_current->idle_sp = 0;
2595 3376
2596void 3377void
2597swap_defsv (Coro::State self) 3378swap_defsv (Coro::State self)
2598 PROTOTYPE: $ 3379 PROTOTYPE: $
2599 ALIAS: 3380 ALIAS:
… …
2607 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3388 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2608 3389
2609 SV *tmp = *src; *src = *dst; *dst = tmp; 3390 SV *tmp = *src; *src = *dst; *dst = tmp;
2610 } 3391 }
2611 3392
3393void
3394cancel (Coro::State self)
3395 CODE:
3396 coro_state_destroy (aTHX_ self);
3397 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3398
3399
3400SV *
3401enable_times (int enabled = enable_times)
3402 CODE:
3403{
3404 RETVAL = boolSV (enable_times);
3405
3406 if (enabled != enable_times)
3407 {
3408 enable_times = enabled;
3409
3410 coro_times_update ();
3411 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3412 }
3413}
3414 OUTPUT:
3415 RETVAL
3416
3417void
3418times (Coro::State self)
3419 PPCODE:
3420{
3421 struct coro *current = SvSTATE (coro_current);
3422
3423 if (expect_false (current == self))
3424 {
3425 coro_times_update ();
3426 coro_times_add (SvSTATE (coro_current));
3427 }
3428
3429 EXTEND (SP, 2);
3430 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3431 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3432
3433 if (expect_false (current == self))
3434 coro_times_sub (SvSTATE (coro_current));
3435}
3436
3437void
3438swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3439 CODE:
3440{
3441 struct coro *current = SvSTATE_current;
3442
3443 if (current == coro)
3444 SWAP_SVS (current);
3445
3446 if (!coro->swap_sv)
3447 coro->swap_sv = newAV ();
3448
3449 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3450 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3451
3452 if (current == coro)
3453 SWAP_SVS (current);
3454}
3455
2612 3456
2613MODULE = Coro::State PACKAGE = Coro 3457MODULE = Coro::State PACKAGE = Coro
2614 3458
2615BOOT: 3459BOOT:
2616{ 3460{
2617 int i;
2618
2619 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2620 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3461 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2621 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3462 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2622 3463 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3464 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2623 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3465 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2624 SvREADONLY_on (coro_current); 3466 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3467 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3468 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3469 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2625 3470
3471 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3472 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3473 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3474 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3475
2626 coro_stash = gv_stashpv ("Coro", TRUE); 3476 coro_stash = gv_stashpv ("Coro", TRUE);
2627 3477
2628 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3478 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2629 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3479 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2630 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3480 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2631 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3481 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2632 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3482 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2633 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3483 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2634
2635 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2636 coro_ready[i] = newAV ();
2637 3484
2638 { 3485 {
2639 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3486 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2640 3487
2641 coroapi.schedule = api_schedule; 3488 coroapi.schedule = api_schedule;
3489 coroapi.schedule_to = api_schedule_to;
2642 coroapi.cede = api_cede; 3490 coroapi.cede = api_cede;
2643 coroapi.cede_notself = api_cede_notself; 3491 coroapi.cede_notself = api_cede_notself;
2644 coroapi.ready = api_ready; 3492 coroapi.ready = api_ready;
2645 coroapi.is_ready = api_is_ready; 3493 coroapi.is_ready = api_is_ready;
2646 coroapi.nready = coro_nready; 3494 coroapi.nready = coro_nready;
… …
2650 sv_setiv (sv, (IV)&coroapi); 3498 sv_setiv (sv, (IV)&coroapi);
2651 SvREADONLY_on (sv); 3499 SvREADONLY_on (sv);
2652 } 3500 }
2653} 3501}
2654 3502
3503SV *
3504async (...)
3505 PROTOTYPE: &@
3506 CODE:
3507 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3508 api_ready (aTHX_ RETVAL);
3509 OUTPUT:
3510 RETVAL
3511
3512void
3513terminate (...)
3514 CODE:
3515 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3516
2655void 3517void
2656schedule (...) 3518schedule (...)
2657 CODE: 3519 CODE:
2658 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3520 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3521
3522void
3523schedule_to (...)
3524 CODE:
3525 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3526
3527void
3528cede_to (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2659 3531
2660void 3532void
2661cede (...) 3533cede (...)
2662 CODE: 3534 CODE:
2663 CORO_EXECUTE_SLF_XS (slf_init_cede); 3535 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2677void 3549void
2678_set_readyhook (SV *hook) 3550_set_readyhook (SV *hook)
2679 PROTOTYPE: $ 3551 PROTOTYPE: $
2680 CODE: 3552 CODE:
2681 SvREFCNT_dec (coro_readyhook); 3553 SvREFCNT_dec (coro_readyhook);
3554 SvGETMAGIC (hook);
3555 if (SvOK (hook))
3556 {
2682 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3557 coro_readyhook = newSVsv (hook);
3558 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3559 }
3560 else
3561 {
3562 coro_readyhook = 0;
3563 CORO_READYHOOK = 0;
3564 }
2683 3565
2684int 3566int
2685prio (Coro::State coro, int newprio = 0) 3567prio (Coro::State coro, int newprio = 0)
2686 PROTOTYPE: $;$ 3568 PROTOTYPE: $;$
2687 ALIAS: 3569 ALIAS:
… …
2693 if (items > 1) 3575 if (items > 1)
2694 { 3576 {
2695 if (ix) 3577 if (ix)
2696 newprio = coro->prio - newprio; 3578 newprio = coro->prio - newprio;
2697 3579
2698 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3580 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2699 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3581 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2700 3582
2701 coro->prio = newprio; 3583 coro->prio = newprio;
2702 } 3584 }
2703} 3585}
2704 OUTPUT: 3586 OUTPUT:
… …
2718 CODE: 3600 CODE:
2719 RETVAL = coro_nready; 3601 RETVAL = coro_nready;
2720 OUTPUT: 3602 OUTPUT:
2721 RETVAL 3603 RETVAL
2722 3604
2723# for async_pool speedup
2724void 3605void
2725_pool_1 (SV *cb) 3606suspend (Coro::State self)
3607 PROTOTYPE: $
2726 CODE: 3608 CODE:
2727{ 3609 self->flags |= CF_SUSPENDED;
2728 HV *hv = (HV *)SvRV (coro_current);
2729 struct coro *coro = SvSTATE_hv ((SV *)hv);
2730 AV *defav = GvAV (PL_defgv);
2731 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2732 AV *invoke_av;
2733 int i, len;
2734 3610
2735 if (!invoke) 3611void
3612resume (Coro::State self)
3613 PROTOTYPE: $
3614 CODE:
3615 self->flags &= ~CF_SUSPENDED;
3616
3617void
3618_pool_handler (...)
3619 CODE:
3620 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3621
3622void
3623async_pool (SV *cv, ...)
3624 PROTOTYPE: &@
3625 PPCODE:
3626{
3627 HV *hv = (HV *)av_pop (av_async_pool);
3628 AV *av = newAV ();
3629 SV *cb = ST (0);
3630 int i;
3631
3632 av_extend (av, items - 2);
3633 for (i = 1; i < items; ++i)
3634 av_push (av, SvREFCNT_inc_NN (ST (i)));
3635
3636 if ((SV *)hv == &PL_sv_undef)
2736 { 3637 {
2737 SV *old = PL_diehook; 3638 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2738 PL_diehook = 0; 3639 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2739 SvREFCNT_dec (old); 3640 SvREFCNT_dec (sv);
2740 croak ("\3async_pool terminate\2\n");
2741 } 3641 }
2742 3642
2743 SvREFCNT_dec (coro->saved_deffh);
2744 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2745
2746 hv_store (hv, "desc", sizeof ("desc") - 1,
2747 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2748
2749 invoke_av = (AV *)SvRV (invoke);
2750 len = av_len (invoke_av);
2751
2752 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2753
2754 if (len > 0)
2755 { 3643 {
2756 av_fill (defav, len - 1); 3644 struct coro *coro = SvSTATE_hv (hv);
2757 for (i = 0; i < len; ++i) 3645
2758 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3646 assert (!coro->invoke_cb);
3647 assert (!coro->invoke_av);
3648 coro->invoke_cb = SvREFCNT_inc (cb);
3649 coro->invoke_av = av;
2759 } 3650 }
3651
3652 api_ready (aTHX_ (SV *)hv);
3653
3654 if (GIMME_V != G_VOID)
3655 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3656 else
3657 SvREFCNT_dec (hv);
2760} 3658}
3659
3660SV *
3661rouse_cb ()
3662 PROTOTYPE:
3663 CODE:
3664 RETVAL = coro_new_rouse_cb (aTHX);
3665 OUTPUT:
3666 RETVAL
2761 3667
2762void 3668void
2763_pool_2 (SV *cb) 3669rouse_wait (...)
3670 PROTOTYPE: ;$
3671 PPCODE:
3672 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3673
3674void
3675on_enter (SV *block)
3676 ALIAS:
3677 on_leave = 1
3678 PROTOTYPE: &
2764 CODE: 3679 CODE:
2765{ 3680{
2766 HV *hv = (HV *)SvRV (coro_current);
2767 struct coro *coro = SvSTATE_hv ((SV *)hv); 3681 struct coro *coro = SvSTATE_current;
3682 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2768 3683
2769 sv_setsv (cb, &PL_sv_undef); 3684 block = s_get_cv_croak (block);
2770 3685
2771 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3686 if (!*avp)
2772 coro->saved_deffh = 0; 3687 *avp = newAV ();
2773 3688
2774 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3689 av_push (*avp, SvREFCNT_inc (block));
2775 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2776 {
2777 SV *old = PL_diehook;
2778 PL_diehook = 0;
2779 SvREFCNT_dec (old);
2780 croak ("\3async_pool terminate\2\n");
2781 }
2782 3690
2783 av_clear (GvAV (PL_defgv)); 3691 if (!ix)
2784 hv_store (hv, "desc", sizeof ("desc") - 1, 3692 on_enterleave_call (aTHX_ block);
2785 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2786 3693
2787 coro->prio = 0; 3694 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2788 3695 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2789 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3696 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2790 api_trace (aTHX_ coro_current, 0);
2791
2792 av_push (av_async_pool, newSVsv (coro_current));
2793} 3697}
2794 3698
2795 3699
2796MODULE = Coro::State PACKAGE = PerlIO::cede 3700MODULE = Coro::State PACKAGE = PerlIO::cede
2797 3701
… …
2800 3704
2801 3705
2802MODULE = Coro::State PACKAGE = Coro::Semaphore 3706MODULE = Coro::State PACKAGE = Coro::Semaphore
2803 3707
2804SV * 3708SV *
2805new (SV *klass, SV *count_ = 0) 3709new (SV *klass, SV *count = 0)
2806 CODE: 3710 CODE:
2807{ 3711{
2808 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3712 int semcnt = 1;
2809 AV *av = newAV ();
2810 SV **ary;
2811 3713
2812 /* unfortunately, building manually saves memory */ 3714 if (count)
2813 Newx (ary, 2, SV *); 3715 {
2814 AvALLOC (av) = ary; 3716 SvGETMAGIC (count);
2815 AvARRAY (av) = ary;
2816 AvMAX (av) = 1;
2817 AvFILLp (av) = 0;
2818 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2819 3717
2820 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3718 if (SvOK (count))
3719 semcnt = SvIV (count);
3720 }
3721
3722 RETVAL = sv_bless (
3723 coro_waitarray_new (aTHX_ semcnt),
3724 GvSTASH (CvGV (cv))
3725 );
2821} 3726}
3727 OUTPUT:
3728 RETVAL
3729
3730# helper for Coro::Channel and others
3731SV *
3732_alloc (int count)
3733 CODE:
3734 RETVAL = coro_waitarray_new (aTHX_ count);
2822 OUTPUT: 3735 OUTPUT:
2823 RETVAL 3736 RETVAL
2824 3737
2825SV * 3738SV *
2826count (SV *self) 3739count (SV *self)
… …
2835 adjust = 1 3748 adjust = 1
2836 CODE: 3749 CODE:
2837 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3750 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2838 3751
2839void 3752void
2840down (SV *self) 3753down (...)
2841 CODE: 3754 CODE:
2842 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3755 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2843 3756
2844void 3757void
2845wait (SV *self) 3758wait (...)
2846 CODE: 3759 CODE:
2847 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 3760 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2848 3761
2849void 3762void
2850try (SV *self) 3763try (SV *self)
… …
2864 XSRETURN_NO; 3777 XSRETURN_NO;
2865} 3778}
2866 3779
2867void 3780void
2868waiters (SV *self) 3781waiters (SV *self)
2869 CODE: 3782 PPCODE:
2870{ 3783{
2871 AV *av = (AV *)SvRV (self); 3784 AV *av = (AV *)SvRV (self);
3785 int wcount = AvFILLp (av) + 1 - 1;
2872 3786
2873 if (GIMME_V == G_SCALAR) 3787 if (GIMME_V == G_SCALAR)
2874 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3788 XPUSHs (sv_2mortal (newSViv (wcount)));
2875 else 3789 else
2876 { 3790 {
2877 int i; 3791 int i;
2878 EXTEND (SP, AvFILLp (av) + 1 - 1); 3792 EXTEND (SP, wcount);
2879 for (i = 1; i <= AvFILLp (av); ++i) 3793 for (i = 1; i <= wcount; ++i)
2880 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3794 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2881 } 3795 }
2882} 3796}
3797
3798MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3799
3800void
3801_may_delete (SV *sem, int count, int extra_refs)
3802 PPCODE:
3803{
3804 AV *av = (AV *)SvRV (sem);
3805
3806 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3807 && AvFILLp (av) == 0 /* no waiters, just count */
3808 && SvIV (AvARRAY (av)[0]) == count)
3809 XSRETURN_YES;
3810
3811 XSRETURN_NO;
3812}
3813
3814MODULE = Coro::State PACKAGE = Coro::Signal
3815
3816SV *
3817new (SV *klass)
3818 CODE:
3819 RETVAL = sv_bless (
3820 coro_waitarray_new (aTHX_ 0),
3821 GvSTASH (CvGV (cv))
3822 );
3823 OUTPUT:
3824 RETVAL
3825
3826void
3827wait (...)
3828 CODE:
3829 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3830
3831void
3832broadcast (SV *self)
3833 CODE:
3834{
3835 AV *av = (AV *)SvRV (self);
3836 coro_signal_wake (aTHX_ av, AvFILLp (av));
3837}
3838
3839void
3840send (SV *self)
3841 CODE:
3842{
3843 AV *av = (AV *)SvRV (self);
3844
3845 if (AvFILLp (av))
3846 coro_signal_wake (aTHX_ av, 1);
3847 else
3848 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3849}
3850
3851IV
3852awaited (SV *self)
3853 CODE:
3854 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3855 OUTPUT:
3856 RETVAL
2883 3857
2884 3858
2885MODULE = Coro::State PACKAGE = Coro::AnyEvent 3859MODULE = Coro::State PACKAGE = Coro::AnyEvent
2886 3860
2887BOOT: 3861BOOT:
… …
2915 3889
2916void 3890void
2917_register (char *target, char *proto, SV *req) 3891_register (char *target, char *proto, SV *req)
2918 CODE: 3892 CODE:
2919{ 3893{
2920 HV *st; 3894 SV *req_cv = s_get_cv_croak (req);
2921 GV *gvp;
2922 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2923 /* newXSproto doesn't return the CV on 5.8 */ 3895 /* newXSproto doesn't return the CV on 5.8 */
2924 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 3896 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2925 sv_setpv ((SV *)slf_cv, proto); 3897 sv_setpv ((SV *)slf_cv, proto);
2926 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3898 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2927} 3899}
2928 3900
3901MODULE = Coro::State PACKAGE = Coro::Select
3902
3903void
3904patch_pp_sselect ()
3905 CODE:
3906 if (!coro_old_pp_sselect)
3907 {
3908 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3909 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3910 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3911 }
3912
3913void
3914unpatch_pp_sselect ()
3915 CODE:
3916 if (coro_old_pp_sselect)
3917 {
3918 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3919 coro_old_pp_sselect = 0;
3920 }
3921

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