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Comparing Coro/Coro/State.xs (file contents):
Revision 1.305 by root, Wed Nov 19 10:44:41 2008 UTC vs.
Revision 1.394 by root, Sat Apr 30 05:17:43 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>
16 21
17#ifdef WIN32 22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
26#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp /* deep magic */ 31# define setjmp _setjmp /* deep magic */
22#else 32#else
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
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 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
111#endif 68#endif
112 69
113#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
127#else 84#else
128# define dSTACKLEVEL volatile void *stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 86# define STACKLEVEL ((void *)&stacklevel)
130#endif 87#endif
131 88
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
133 90
134#if __GNUC__ >= 3 91#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
137# define INLINE static inline 94# define INLINE static inline
138#else 95#else
139# define attribute(x) 96# define attribute(x)
140# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
141# define INLINE static 98# define INLINE static
… …
153# if CORO_PTHREAD 110# if CORO_PTHREAD
154static void *coro_thx; 111static void *coro_thx;
155# endif 112# endif
156#endif 113#endif
157 114
115#ifdef __linux
116# include <time.h> /* for timespec */
117# include <syscall.h> /* for SYS_* */
118# ifdef SYS_clock_gettime
119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
120# define CORO_CLOCK_MONOTONIC 1
121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122# endif
123#endif
124
158static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
159 127
160/* we hijack an hopefully unused CV flag for our purposes */ 128/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 129#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 130static OP *pp_slf (pTHX);
163 131
… …
167static AV *main_mainstack; /* used to differentiate between $main and others */ 135static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 136static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 137static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 138static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 139
140static AV *av_destroy; /* destruction queue */
141static SV *sv_manager; /* the manager coro */
142static SV *sv_idle; /* $Coro::idle */
143
172static GV *irsgv; /* $/ */ 144static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 145static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 146static SV *rv_diehook;
175static SV *rv_warnhook; 147static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 148static HV *hv_sig; /* %SIG */
177 149
178/* async_pool helper stuff */ 150/* async_pool helper stuff */
179static SV *sv_pool_rss; 151static SV *sv_pool_rss;
180static SV *sv_pool_size; 152static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 154static AV *av_async_pool; /* idle pool */
155static SV *sv_Coro; /* class string */
156static CV *cv_pool_handler;
182 157
183/* Coro::AnyEvent */ 158/* Coro::AnyEvent */
184static SV *sv_activity; 159static SV *sv_activity;
160
161/* enable processtime/realtime profiling */
162static char enable_times;
163typedef U32 coro_ts[2];
164static coro_ts time_real, time_cpu;
165static char times_valid;
185 166
186static struct coro_cctx *cctx_first; 167static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 168static int cctx_count, cctx_idle;
188 169
189enum { 170enum {
… …
215 int valgrind_id; 196 int valgrind_id;
216#endif 197#endif
217 unsigned char flags; 198 unsigned char flags;
218} coro_cctx; 199} coro_cctx;
219 200
201static coro_cctx *cctx_current; /* the currently running cctx */
202
203/*****************************************************************************/
204
220enum { 205enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 206 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 207 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 208 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 212};
226 213
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 214/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 215typedef struct
229{ 216{
230 SV *defsv; 217 SV *defsv;
231 AV *defav; 218 AV *defav;
232 SV *errsv; 219 SV *errsv;
233 SV *irsgv; 220 SV *irsgv;
221 HV *hinthv;
234#define VAR(name,type) type name; 222#define VAR(name,type) type name;
235# include "state.h" 223# include "state.h"
236#undef VAR 224#undef VAR
237} perl_slots; 225} perl_slots;
238 226
… …
241/* this is a structure representing a perl-level coroutine */ 229/* this is a structure representing a perl-level coroutine */
242struct coro { 230struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 231 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 232 coro_cctx *cctx;
245 233
234 /* ready queue */
235 struct coro *next_ready;
236
246 /* state data */ 237 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 238 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 239 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 240 perl_slots *slot; /* basically the saved sp */
250 241
242 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 243 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 244 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 245 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 246 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 247 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
256 248
257 /* statistics */ 249 /* statistics */
258 int usecount; /* number of transfers to this coro */ 250 int usecount; /* number of transfers to this coro */
259 251
260 /* coro process data */ 252 /* coro process data */
… …
262 SV *except; /* exception to be thrown */ 254 SV *except; /* exception to be thrown */
263 SV *rouse_cb; 255 SV *rouse_cb;
264 256
265 /* async_pool */ 257 /* async_pool */
266 SV *saved_deffh; 258 SV *saved_deffh;
259 SV *invoke_cb;
260 AV *invoke_av;
261
262 /* on_enter/on_leave */
263 AV *on_enter;
264 AV *on_leave;
265
266 /* swap_sv */
267 AV *swap_sv;
268
269 /* times */
270 coro_ts t_cpu, t_real;
267 271
268 /* linked list */ 272 /* linked list */
269 struct coro *next, *prev; 273 struct coro *next, *prev;
270}; 274};
271 275
272typedef struct coro *Coro__State; 276typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 277typedef struct coro *Coro__State_or_hashref;
274 278
275/* the following variables are effectively part of the perl context */ 279/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */ 280/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */ 281/* the main reason we don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */ 282static struct CoroSLF slf_frame; /* the current slf frame */
279 283
280/** Coro ********************************************************************/ 284/** Coro ********************************************************************/
281 285
282#define PRIO_MAX 3 286#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 287#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 288#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 289#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 290#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 291#define CORO_PRIO_MIN -4
288 292
289/* for Coro.pm */ 293/* for Coro.pm */
290static SV *coro_current; 294static SV *coro_current;
291static SV *coro_readyhook; 295static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run, *cv_coro_terminate;
293static struct coro *coro_first; 298static struct coro *coro_first;
294#define coro_nready coroapi.nready 299#define coro_nready coroapi.nready
300
301/** Coro::Select ************************************************************/
302
303static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select;
305
306/* horrible hack, but if it works... */
307static OP *
308coro_pp_sselect (pTHX)
309{
310 dSP;
311 PUSHMARK (SP - 4); /* fake argument list */
312 XPUSHs (coro_select_select);
313 PUTBACK;
314
315 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
316 PL_op->op_flags |= OPf_STACKED;
317 PL_op->op_private = 0;
318 return PL_ppaddr [OP_ENTERSUB](aTHX);
319}
320
321/** time stuff **************************************************************/
322
323#ifdef HAS_GETTIMEOFDAY
324
325static void
326coro_u2time (pTHX_ UV ret[2])
327{
328 struct timeval tv;
329 gettimeofday (&tv, 0);
330
331 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec;
333}
334
335static double
336coro_nvtime ()
337{
338 struct timeval tv;
339 gettimeofday (&tv, 0);
340
341 return tv.tv_sec + tv.tv_usec * 1e-6;
342}
343
344static void
345time_init (pTHX)
346{
347 nvtime = coro_nvtime;
348 u2time = coro_u2time;
349}
350
351#else
352
353static void
354time_init (pTHX)
355{
356 SV **svp;
357
358 require_pv ("Time/HiRes.pm");
359
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364
365 nvtime = INT2PTR (double (*)(), SvIV (*svp));
366
367 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
368 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
369}
370
371#endif
295 372
296/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
297 374
298static SV * 375static SV *
299coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
… …
323 get_hv (name, create); 400 get_hv (name, create);
324#endif 401#endif
325 return get_hv (name, create); 402 return get_hv (name, create);
326} 403}
327 404
405INLINE void
406coro_times_update ()
407{
408#ifdef coro_clock_gettime
409 struct timespec ts;
410
411 ts.tv_sec = ts.tv_nsec = 0;
412 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
413 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
414
415 ts.tv_sec = ts.tv_nsec = 0;
416 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
417 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
418#else
419 dTHX;
420 UV tv[2];
421
422 u2time (aTHX_ tv);
423 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000;
425#endif
426}
427
428INLINE void
429coro_times_add (struct coro *c)
430{
431 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0];
434
435 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0];
438}
439
440INLINE void
441coro_times_sub (struct coro *c)
442{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0];
446
447 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
448 c->t_cpu [1] -= time_cpu [1];
449 c->t_cpu [0] -= time_cpu [0];
450}
451
452/*****************************************************************************/
453/* magic glue */
454
455#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext
457
458#define CORO_MAGIC_NN(sv, type) \
459 (expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \
461 : mg_find (sv, type))
462
463#define CORO_MAGIC(sv, type) \
464 (expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \
466 : 0)
467
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470
471INLINE struct coro *
472SvSTATE_ (pTHX_ SV *coro)
473{
474 HV *stash;
475 MAGIC *mg;
476
477 if (SvROK (coro))
478 coro = SvRV (coro);
479
480 if (expect_false (SvTYPE (coro) != SVt_PVHV))
481 croak ("Coro::State object required");
482
483 stash = SvSTASH (coro);
484 if (expect_false (stash != coro_stash && stash != coro_state_stash))
485 {
486 /* very slow, but rare, check */
487 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
488 croak ("Coro::State object required");
489 }
490
491 mg = CORO_MAGIC_state (coro);
492 return (struct coro *)mg->mg_ptr;
493}
494
495#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
496
497/* faster than SvSTATE, but expects a coroutine hv */
498#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500
501/*****************************************************************************/
502/* padlist management and caching */
503
328static AV * 504static AV *
329coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
330{ 506{
331 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
333 509
334 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 516#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 518 --AvFILLp (padlist);
343 519
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
346 522
347 return newpadlist; 523 return newpadlist;
348} 524}
349 525
350static void 526static void
351free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
352{ 528{
353 /* may be during global destruction */ 529 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
355 { 531 {
356 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
357 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
358 { 535 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
360 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 538 I32 j = AvFILLp (av);
362 SV *sv; 539
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 545 }
369 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
371 } 551 }
372} 552}
373 553
374static int 554static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 556{
377 AV *padlist; 557 AV *padlist;
378 AV *av = (AV *)mg->mg_obj; 558 AV *av = (AV *)mg->mg_obj;
559
560 /* perl manages to free our internal AV and _then_ call us */
561 if (IN_DESTRUCT)
562 return 0;
379 563
380 /* casting is fun. */ 564 /* casting is fun. */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
382 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
383 567
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 569
386 return 0; 570 return 0;
387} 571}
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 572
392static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 574 0, 0, 0, 0,
394 coro_cv_free 575 coro_cv_free
395}; 576};
396
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
402#define CORO_MAGIC(sv, type) \
403 (expect_true (SvMAGIC (sv)) \
404 ? CORO_MAGIC_NN (sv, type) \
405 : 0)
406
407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
409
410INLINE struct coro *
411SvSTATE_ (pTHX_ SV *coro)
412{
413 HV *stash;
414 MAGIC *mg;
415
416 if (SvROK (coro))
417 coro = SvRV (coro);
418
419 if (expect_false (SvTYPE (coro) != SVt_PVHV))
420 croak ("Coro::State object required");
421
422 stash = SvSTASH (coro);
423 if (expect_false (stash != coro_stash && stash != coro_state_stash))
424 {
425 /* very slow, but rare, check */
426 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
427 croak ("Coro::State object required");
428 }
429
430 mg = CORO_MAGIC_state (coro);
431 return (struct coro *)mg->mg_ptr;
432}
433
434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
439 577
440/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
441static void 579static void
442get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
443{ 581{
… …
454 CV *cp = Perl_cv_clone (aTHX_ cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
455 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
456 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
457 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
458#else 596#else
459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
460#endif 598#endif
461 } 599 }
462} 600}
463 601
464static void 602static void
… …
471 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 609 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
472 610
473 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
474 612
475 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
476 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
477 615
478 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
479} 617}
480 618
481/** load & save, init *******************************************************/ 619/** load & save, init *******************************************************/
620
621/* swap sv heads, at least logically */
622static void
623swap_svs (pTHX_ Coro__State c)
624{
625 int i;
626
627 for (i = 0; i <= AvFILLp (c->swap_sv); )
628 {
629 SV *a = AvARRAY (c->swap_sv)[i++];
630 SV *b = AvARRAY (c->swap_sv)[i++];
631
632 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
633 SV tmp;
634
635 /* swap sv_any */
636 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
637
638 /* swap sv_flags */
639 SvFLAGS (&tmp) = SvFLAGS (a);
640 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
641 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
642
643#if PERL_VERSION_ATLEAST (5,10,0)
644 /* perl 5.10 complicates this _quite_ a bit, but it also is
645 * much faster, so no quarrels here. alternatively, we could
646 * sv_upgrade to avoid this.
647 */
648 {
649 /* swap sv_u */
650 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
651
652 /* if SvANY points to the head, we need to adjust the pointers,
653 * as the pointer for a still points to b, and maybe vice versa.
654 */
655 #define svany_in_head(type) \
656 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
657
658 if (svany_in_head (SvTYPE (a)))
659 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
660
661 if (svany_in_head (SvTYPE (b)))
662 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
663 }
664#endif
665 }
666}
667
668#define SWAP_SVS(coro) \
669 if (expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro))
671
672static void
673on_enterleave_call (pTHX_ SV *cb);
482 674
483static void 675static void
484load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
485{ 677{
486 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
487 c->slot = 0; 679 c->slot = 0;
488 680
489 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
490 682
491 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
492 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
493 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
494 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
495 688
496 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
497 # include "state.h" 690 # include "state.h"
498 #undef VAR 691 #undef VAR
499 692
… …
513 PUTBACK; 706 PUTBACK;
514 } 707 }
515 708
516 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
517 CORO_THROW = c->except; 710 CORO_THROW = c->except;
711
712 if (expect_false (enable_times))
713 {
714 if (expect_false (!times_valid))
715 coro_times_update ();
716
717 coro_times_sub (c);
718 }
719
720 if (expect_false (c->on_enter))
721 {
722 int i;
723
724 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
725 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
726 }
727
728 SWAP_SVS (c);
518} 729}
519 730
520static void 731static void
521save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
522{ 733{
734 SWAP_SVS (c);
735
736 if (expect_false (c->on_leave))
737 {
738 int i;
739
740 for (i = AvFILLp (c->on_leave); i >= 0; --i)
741 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
742 }
743
744 times_valid = 0;
745
746 if (expect_false (enable_times))
747 {
748 coro_times_update (); times_valid = 1;
749 coro_times_add (c);
750 }
751
523 c->except = CORO_THROW; 752 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
525 754
526 { 755 {
527 dSP; 756 dSP;
… …
540 { 769 {
541 while (expect_true (cxix >= 0)) 770 while (expect_true (cxix >= 0))
542 { 771 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
544 773
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 774 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 775 {
547 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
548 777
549 if (expect_true (CvDEPTH (cv))) 778 if (expect_true (CvDEPTH (cv)))
550 { 779 {
… …
574 /* we manually unroll here, as usually 2 slots is enough */ 803 /* we manually unroll here, as usually 2 slots is enough */
575 if (SLOT_COUNT >= 1) CXINC; 804 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC; 805 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC; 806 if (SLOT_COUNT >= 3) CXINC;
578 { 807 {
579 int i; 808 unsigned int i;
580 for (i = 3; i < SLOT_COUNT; ++i) 809 for (i = 3; i < SLOT_COUNT; ++i)
581 CXINC; 810 CXINC;
582 } 811 }
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 812 cxstack_ix -= SLOT_COUNT; /* undo allocation */
584 813
585 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
586 815
587 { 816 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 818
590 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
592 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
594 824
595 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 826 # include "state.h"
597 #undef VAR 827 #undef VAR
598 } 828 }
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 907 Safefree (PL_retstack);
678#endif 908#endif
679} 909}
680 910
911#define CORO_RSS \
912 rss += sizeof (SYM (curstackinfo)); \
913 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
914 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
915 rss += SYM (tmps_max) * sizeof (SV *); \
916 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
917 rss += SYM (scopestack_max) * sizeof (I32); \
918 rss += SYM (savestack_max) * sizeof (ANY);
919
681static size_t 920static size_t
682coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
683{ 922{
684 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
685 924
686 if (coro->mainstack) 925 if (coro->mainstack)
687 { 926 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
692 { 928 {
693 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
694 930 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 931 #undef SYM
698 } 932 }
699 else 933 else
700 slot = coro->slot;
701
702 if (slot)
703 { 934 {
704 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 938 }
716 } 939 }
717 940
718 return rss; 941 return rss;
719} 942}
… …
732#endif 955#endif
733 956
734/* 957/*
735 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 959 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 960 * and instead of trying to save and restore the hash elements, we just provide
738 * readback here. 961 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 962 */
743static int 963static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 965{
746 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1020
801 if (svp) 1021 if (svp)
802 { 1022 {
803 SV *old = *svp; 1023 SV *old = *svp;
804 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
806 return 0; 1026 return 0;
807 } 1027 }
808 } 1028 }
809 1029
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1042{
823 return 0; 1043 return 0;
824} 1044}
825 1045
826static UNOP coro_setup_op; 1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
827 1053
828static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
830{ 1056{
831 /* 1057 /*
832 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
833 */ 1059 */
834 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
835 1061
836 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1069 PL_curpm = 0;
841 PL_curpad = 0; 1070 PL_curpad = 0;
842 PL_localizing = 0; 1071 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1072 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1074 PL_parser = 0;
847#endif 1075#endif
1076 PL_hints = 0;
848 1077
849 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 1081
853 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1086 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1089
860 { 1090 {
861 dSP; 1091 dSP;
862 UNOP myop; 1092 UNOP myop;
863 1093
864 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
867 1098
868 PUSHMARK (SP); 1099 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1101 PUTBACK;
871 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1104 }
875 1105
876 /* this newly created coroutine might be run on an existing cctx which most 1106 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1107 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1108 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1110 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881 1111
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op; 1113 init_perl_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM; 1114 init_perl_op.op_type = OP_ENTERSUB;
885 coro_setup_op.op_ppaddr = pp_slf; 1115 init_perl_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */ 1116 /* no flags etc. required, as an init function won't be called */
887 1117
888 PL_op = (OP *)&coro_setup_op; 1118 PL_op = (OP *)&init_perl_op;
889 1119
890 /* copy throw, in case it was set before coro_setup */ 1120 /* copy throw, in case it was set before init_perl */
891 CORO_THROW = coro->except; 1121 CORO_THROW = coro->except;
892}
893 1122
1123 SWAP_SVS (coro);
1124
1125 if (expect_false (enable_times))
1126 {
1127 coro_times_update ();
1128 coro_times_sub (coro);
1129 }
1130}
1131
894static void 1132static void
895coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
896{ 1134{
897 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
898 { 1136 {
899 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
900 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
908 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
909 1147
910 /* unwind main stack */ 1148 /* unwind main stack */
911 dounwind (-1); 1149 dounwind (-1);
912 } 1150 }
1151}
913 1152
914 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
915 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
916 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
917 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
918 SvREFCNT_dec (PL_rs);
919 SvREFCNT_dec (GvSV (irsgv));
920 1157
921 SvREFCNT_dec (PL_diehook);
922 SvREFCNT_dec (PL_warnhook);
923 1158 {
924 SvREFCNT_dec (CORO_THROW); 1159 struct coro *current = SvSTATE_current;
1160
1161 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1162
1163 save_perl (aTHX_ current);
1164 load_perl (aTHX_ coro);
1165
1166 coro_unwind_stacks (aTHX);
1167 coro_destruct_stacks (aTHX);
1168
1169 /* restore swapped sv's */
1170 SWAP_SVS (coro);
1171
1172 // now save some sv's to be free'd later
1173 svf [0] = GvSV (PL_defgv);
1174 svf [1] = (SV *)GvAV (PL_defgv);
1175 svf [2] = GvSV (PL_errgv);
1176 svf [3] = (SV *)PL_defoutgv;
1177 svf [4] = PL_rs;
1178 svf [5] = GvSV (irsgv);
1179 svf [6] = (SV *)GvHV (PL_hintgv);
1180 svf [7] = PL_diehook;
1181 svf [8] = PL_warnhook;
1182 assert (9 == sizeof (svf) / sizeof (*svf));
1183
1184 load_perl (aTHX_ current);
1185 }
1186
1187 {
1188 unsigned int i;
1189
1190 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1191 SvREFCNT_dec (svf [i]);
1192
925 SvREFCNT_dec (coro->saved_deffh); 1193 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->rouse_cb); 1194 SvREFCNT_dec (coro->rouse_cb);
927 1195 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1196 SvREFCNT_dec (coro->invoke_av);
1197 }
929} 1198}
930 1199
931INLINE void 1200INLINE void
932free_coro_mortal (pTHX) 1201free_coro_mortal (pTHX)
933{ 1202{
… …
941static int 1210static int
942runops_trace (pTHX) 1211runops_trace (pTHX)
943{ 1212{
944 COP *oldcop = 0; 1213 COP *oldcop = 0;
945 int oldcxix = -2; 1214 int oldcxix = -2;
946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1215
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1216 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1217 {
951 PERL_ASYNC_CHECK (); 1218 PERL_ASYNC_CHECK ();
952 1219
953 if (cctx->flags & CC_TRACE_ALL) 1220 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1221 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1222 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1223 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1224 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1225 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1226 AV *av = newAV (); /* return values */
960 SV **cb; 1227 SV **cb;
… …
997 1264
998 if (PL_curcop != &PL_compiling) 1265 if (PL_curcop != &PL_compiling)
999 { 1266 {
1000 SV **cb; 1267 SV **cb;
1001 1268
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1269 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1270 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1272
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1273 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1274 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1275 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1276 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1277 SV *fullname = sv_2mortal (newSV (0));
1012 1278
1013 if (isGV (gv)) 1279 if (isGV (gv))
… …
1018 SAVETMPS; 1284 SAVETMPS;
1019 EXTEND (SP, 3); 1285 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1286 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1287 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1288 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1289 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1290 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1291 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1292 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1293 SPAGAIN;
1028 FREETMPS; 1294 FREETMPS;
… …
1031 } 1297 }
1032 1298
1033 oldcxix = cxstack_ix; 1299 oldcxix = cxstack_ix;
1034 } 1300 }
1035 1301
1036 if (cctx->flags & CC_TRACE_LINE) 1302 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1303 {
1038 dSP; 1304 dSP;
1039 1305
1040 PL_runops = RUNOPS_DEFAULT; 1306 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1307 ENTER;
… …
1060 1326
1061 TAINT_NOT; 1327 TAINT_NOT;
1062 return 0; 1328 return 0;
1063} 1329}
1064 1330
1065static struct coro_cctx *cctx_ssl_cctx;
1066static struct CoroSLF cctx_ssl_frame; 1331static struct CoroSLF cctx_ssl_frame;
1067 1332
1068static void 1333static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1334slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{ 1335{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0; 1336 ta->prev = 0;
1073} 1337}
1074 1338
1075static int 1339static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1340slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{ 1341{
… …
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1344 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081} 1345}
1082 1346
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1347/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1084static void NOINLINE 1348static void NOINLINE
1085cctx_prepare (pTHX_ coro_cctx *cctx) 1349cctx_prepare (pTHX)
1086{ 1350{
1087 PL_top_env = &PL_start_env; 1351 PL_top_env = &PL_start_env;
1088 1352
1089 if (cctx->flags & CC_TRACE) 1353 if (cctx_current->flags & CC_TRACE)
1090 PL_runops = runops_trace; 1354 PL_runops = runops_trace;
1091 1355
1092 /* we already must be executing an SLF op, there is no other valid way 1356 /* we already must be executing an SLF op, there is no other valid way
1093 * that can lead to creation of a new cctx */ 1357 * that can lead to creation of a new cctx */
1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1358 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1359 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1096 1360
1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1361 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1098 cctx_ssl_cctx = cctx;
1099 cctx_ssl_frame = slf_frame; 1362 cctx_ssl_frame = slf_frame;
1100 1363
1101 slf_frame.prepare = slf_prepare_set_stacklevel; 1364 slf_frame.prepare = slf_prepare_set_stacklevel;
1102 slf_frame.check = slf_check_set_stacklevel; 1365 slf_frame.check = slf_check_set_stacklevel;
1103} 1366}
… …
1126 /* normally we would need to skip the entersub here */ 1389 /* normally we would need to skip the entersub here */
1127 /* not doing so will re-execute it, which is exactly what we want */ 1390 /* not doing so will re-execute it, which is exactly what we want */
1128 /* PL_nop = PL_nop->op_next */ 1391 /* PL_nop = PL_nop->op_next */
1129 1392
1130 /* inject a fake subroutine call to cctx_init */ 1393 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1394 cctx_prepare (aTHX);
1132 1395
1133 /* cctx_run is the alternative tail of transfer() */ 1396 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1397 transfer_tail (aTHX);
1135 1398
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1399 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1400 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1401 perl_run (PL_curinterp);
1402 /*
1403 * Unfortunately, there is no way to get at the return values of the
1404 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1405 * runtime errors here, as this is just a random interpreter, not a thread.
1406 */
1139 1407
1140 /* 1408 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1409 * If perl-run returns we assume exit() was being called or the coro
1142 * fell off the end, which seems to be the only valid (non-bug) 1410 * fell off the end, which seems to be the only valid (non-bug)
1143 * reason for perl_run to return. We try to exit by jumping to the 1411 * reason for perl_run to return. We try to exit by jumping to the
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1412 * bootstrap-time "top" top_env, as we cannot restore the "main"
1145 * coroutine as Coro has no such concept 1413 * coroutine as Coro has no such concept.
1414 * This actually isn't valid with the pthread backend, but OSes requiring
1415 * that backend are too broken to do it in a standards-compliant way.
1146 */ 1416 */
1147 PL_top_env = main_top_env; 1417 PL_top_env = main_top_env;
1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1418 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 } 1419 }
1150} 1420}
… …
1227cctx_destroy (coro_cctx *cctx) 1497cctx_destroy (coro_cctx *cctx)
1228{ 1498{
1229 if (!cctx) 1499 if (!cctx)
1230 return; 1500 return;
1231 1501
1502 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1503
1232 --cctx_count; 1504 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1505 coro_destroy (&cctx->cctx);
1234 1506
1235 /* coro_transfer creates new, empty cctx's */ 1507 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1508 if (cctx->sptr)
… …
1299 /* TODO: throwing up here is considered harmful */ 1571 /* TODO: throwing up here is considered harmful */
1300 1572
1301 if (expect_true (prev != next)) 1573 if (expect_true (prev != next))
1302 { 1574 {
1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1575 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1576 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1305 1577
1306 if (expect_false (next->flags & CF_RUNNING))
1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1308
1309 if (expect_false (next->flags & CF_DESTROYED)) 1578 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1579 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1311 1580
1312#if !PERL_VERSION_ATLEAST (5,10,0) 1581#if !PERL_VERSION_ATLEAST (5,10,0)
1313 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1582 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1583 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif 1584#endif
… …
1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1590transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1322{ 1591{
1323 dSTACKLEVEL; 1592 dSTACKLEVEL;
1324 1593
1325 /* sometimes transfer is only called to set idle_sp */ 1594 /* sometimes transfer is only called to set idle_sp */
1326 if (expect_false (!next)) 1595 if (expect_false (!prev))
1327 { 1596 {
1328 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1597 cctx_current->idle_sp = STACKLEVEL;
1329 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1598 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1330 } 1599 }
1331 else if (expect_true (prev != next)) 1600 else if (expect_true (prev != next))
1332 { 1601 {
1333 coro_cctx *prev__cctx; 1602 coro_cctx *cctx_prev;
1334 1603
1335 if (expect_false (prev->flags & CF_NEW)) 1604 if (expect_false (prev->flags & CF_NEW))
1336 { 1605 {
1337 /* create a new empty/source context */ 1606 /* create a new empty/source context */
1338 prev->cctx = cctx_new_empty ();
1339 prev->flags &= ~CF_NEW; 1607 prev->flags &= ~CF_NEW;
1340 prev->flags |= CF_RUNNING; 1608 prev->flags |= CF_RUNNING;
1341 } 1609 }
1342 1610
1343 prev->flags &= ~CF_RUNNING; 1611 prev->flags &= ~CF_RUNNING;
… …
1349 if (expect_false (next->flags & CF_NEW)) 1617 if (expect_false (next->flags & CF_NEW))
1350 { 1618 {
1351 /* need to start coroutine */ 1619 /* need to start coroutine */
1352 next->flags &= ~CF_NEW; 1620 next->flags &= ~CF_NEW;
1353 /* setup coroutine call */ 1621 /* setup coroutine call */
1354 coro_setup (aTHX_ next); 1622 init_perl (aTHX_ next);
1355 } 1623 }
1356 else 1624 else
1357 load_perl (aTHX_ next); 1625 load_perl (aTHX_ next);
1358 1626
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1627 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1628 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1629 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1630 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1631 && !force_cctx
1366 )) 1632 ))
1367 { 1633 {
1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1634 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1635 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1636
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1637 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1638 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1639 if (expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1640 if (expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1641 next->cctx = cctx_get (aTHX);
1378 1642
1379 cctx_put (prev__cctx); 1643 cctx_put (cctx_current);
1380 } 1644 }
1645 else
1646 prev->cctx = cctx_current;
1381 1647
1382 ++next->usecount; 1648 ++next->usecount;
1383 1649
1384 if (expect_true (!next->cctx)) 1650 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1651 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1652
1387 if (expect_false (prev__cctx != next->cctx)) 1653 next->cctx = 0;
1654
1655 if (expect_false (cctx_prev != cctx_current))
1388 { 1656 {
1389 prev__cctx->top_env = PL_top_env; 1657 cctx_prev->top_env = PL_top_env;
1390 PL_top_env = next->cctx->top_env; 1658 PL_top_env = cctx_current->top_env;
1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1659 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1392 } 1660 }
1393 1661
1394 transfer_tail (aTHX); 1662 transfer_tail (aTHX);
1395 } 1663 }
1396} 1664}
… …
1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1666#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1667#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1400 1668
1401/** high level stuff ********************************************************/ 1669/** high level stuff ********************************************************/
1402 1670
1403static int 1671static void
1404coro_state_destroy (pTHX_ struct coro *coro) 1672coro_state_destroy (pTHX_ struct coro *coro)
1405{ 1673{
1406 if (coro->flags & CF_DESTROYED) 1674 if (coro->flags & CF_DESTROYED)
1407 return 0; 1675 return;
1408 1676
1677 /* this callback is reserved for slf functions needing to do cleanup */
1409 if (coro->on_destroy) 1678 if (coro->on_destroy && !PL_dirty)
1410 coro->on_destroy (aTHX_ coro); 1679 coro->on_destroy (aTHX_ coro);
1680
1681 /*
1682 * The on_destroy above most likely is from an SLF call.
1683 * Since by definition the SLF call will not finish when we destroy
1684 * the coro, we will have to force-finish it here, otherwise
1685 * cleanup functions cannot call SLF functions.
1686 */
1687 coro->slf_frame.prepare = 0;
1411 1688
1412 coro->flags |= CF_DESTROYED; 1689 coro->flags |= CF_DESTROYED;
1413 1690
1414 if (coro->flags & CF_READY) 1691 if (coro->flags & CF_READY)
1415 { 1692 {
… …
1418 --coro_nready; 1695 --coro_nready;
1419 } 1696 }
1420 else 1697 else
1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1698 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1422 1699
1423 if (coro->mainstack && coro->mainstack != main_mainstack) 1700 if (coro->mainstack
1424 { 1701 && coro->mainstack != main_mainstack
1425 struct coro temp; 1702 && coro->slot
1426 1703 && !PL_dirty)
1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1428
1429 save_perl (aTHX_ &temp);
1430 load_perl (aTHX_ coro); 1704 destroy_perl (aTHX_ coro);
1431
1432 coro_destruct (aTHX_ coro);
1433
1434 load_perl (aTHX_ &temp);
1435
1436 coro->slot = 0;
1437 }
1438
1439 cctx_destroy (coro->cctx);
1440 SvREFCNT_dec (coro->args);
1441 1705
1442 if (coro->next) coro->next->prev = coro->prev; 1706 if (coro->next) coro->next->prev = coro->prev;
1443 if (coro->prev) coro->prev->next = coro->next; 1707 if (coro->prev) coro->prev->next = coro->next;
1444 if (coro == coro_first) coro_first = coro->next; 1708 if (coro == coro_first) coro_first = coro->next;
1445 1709
1446 return 1; 1710 cctx_destroy (coro->cctx);
1711 SvREFCNT_dec (coro->startcv);
1712 SvREFCNT_dec (coro->args);
1713 SvREFCNT_dec (coro->swap_sv);
1714 SvREFCNT_dec (CORO_THROW);
1447} 1715}
1448 1716
1449static int 1717static int
1450coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1718coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1451{ 1719{
… …
1499 1767
1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1768 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1501 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1502} 1770}
1503 1771
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1525}
1526
1527/** Coro ********************************************************************/ 1772/** Coro ********************************************************************/
1528 1773
1529INLINE void 1774INLINE void
1530coro_enq (pTHX_ struct coro *coro) 1775coro_enq (pTHX_ struct coro *coro)
1531{ 1776{
1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1777 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1533}
1534 1778
1535INLINE SV * 1779 SvREFCNT_inc_NN (coro->hv);
1780
1781 coro->next_ready = 0;
1782 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1783 ready [1] = coro;
1784}
1785
1786INLINE struct coro *
1536coro_deq (pTHX) 1787coro_deq (pTHX)
1537{ 1788{
1538 int prio; 1789 int prio;
1539 1790
1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1791 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1541 if (AvFILLp (coro_ready [prio]) >= 0) 1792 {
1542 return av_shift (coro_ready [prio]); 1793 struct coro **ready = coro_ready [prio];
1794
1795 if (ready [0])
1796 {
1797 struct coro *coro = ready [0];
1798 ready [0] = coro->next_ready;
1799 return coro;
1800 }
1801 }
1543 1802
1544 return 0; 1803 return 0;
1804}
1805
1806static void
1807invoke_sv_ready_hook_helper (void)
1808{
1809 dTHX;
1810 dSP;
1811
1812 ENTER;
1813 SAVETMPS;
1814
1815 PUSHMARK (SP);
1816 PUTBACK;
1817 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1818
1819 FREETMPS;
1820 LEAVE;
1545} 1821}
1546 1822
1547static int 1823static int
1548api_ready (pTHX_ SV *coro_sv) 1824api_ready (pTHX_ SV *coro_sv)
1549{ 1825{
1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1553
1554 if (SvROK (coro_sv))
1555 coro_sv = SvRV (coro_sv);
1556
1557 coro = SvSTATE (coro_sv); 1826 struct coro *coro = SvSTATE (coro_sv);
1558 1827
1559 if (coro->flags & CF_READY) 1828 if (coro->flags & CF_READY)
1560 return 0; 1829 return 0;
1561 1830
1562 coro->flags |= CF_READY; 1831 coro->flags |= CF_READY;
1563 1832
1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro); 1833 coro_enq (aTHX_ coro);
1568 ++coro_nready;
1569 1834
1570 if (sv_hook) 1835 if (!coro_nready++)
1571 { 1836 if (coroapi.readyhook)
1572 dSP; 1837 coroapi.readyhook ();
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1587 1838
1588 return 1; 1839 return 1;
1589} 1840}
1590 1841
1591static int 1842static int
1592api_is_ready (pTHX_ SV *coro_sv) 1843api_is_ready (pTHX_ SV *coro_sv)
1593{ 1844{
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1845 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1846}
1596 1847
1848/* expects to own a reference to next->hv */
1597INLINE void 1849INLINE void
1598prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1850prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1851{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 next_sv = coro_deq (aTHX);
1605
1606 /* nothing to schedule: call the idle handler */
1607 if (expect_false (!next_sv))
1608 {
1609 dSP;
1610
1611 ENTER;
1612 SAVETMPS;
1613
1614 PUSHMARK (SP);
1615 PUTBACK;
1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE_hv (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 break;
1635 }
1636
1637 /* free this only after the transfer */
1638 prev_sv = SvRV (coro_current); 1852 SV *prev_sv = SvRV (coro_current);
1853
1639 ta->prev = SvSTATE_hv (prev_sv); 1854 ta->prev = SvSTATE_hv (prev_sv);
1855 ta->next = next;
1856
1640 TRANSFER_CHECK (*ta); 1857 TRANSFER_CHECK (*ta);
1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1858
1642 ta->next->flags &= ~CF_READY;
1643 SvRV_set (coro_current, next_sv); 1859 SvRV_set (coro_current, (SV *)next->hv);
1644 1860
1645 free_coro_mortal (aTHX); 1861 free_coro_mortal (aTHX);
1646 coro_mortal = prev_sv; 1862 coro_mortal = prev_sv;
1647} 1863}
1648 1864
1865static void
1866prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1867{
1868 for (;;)
1869 {
1870 struct coro *next = coro_deq (aTHX);
1871
1872 if (expect_true (next))
1873 {
1874 /* cannot transfer to destroyed coros, skip and look for next */
1875 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1876 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1877 else
1878 {
1879 next->flags &= ~CF_READY;
1880 --coro_nready;
1881
1882 prepare_schedule_to (aTHX_ ta, next);
1883 break;
1884 }
1885 }
1886 else
1887 {
1888 /* nothing to schedule: call the idle handler */
1889 if (SvROK (sv_idle)
1890 && SvOBJECT (SvRV (sv_idle)))
1891 {
1892 if (SvRV (sv_idle) == SvRV (coro_current))
1893 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1894
1895 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1896 api_ready (aTHX_ SvRV (sv_idle));
1897 --coro_nready;
1898 }
1899 else
1900 {
1901 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1902 dSP;
1903
1904 ENTER;
1905 SAVETMPS;
1906
1907 PUSHMARK (SP);
1908 PUTBACK;
1909 call_sv (sv_idle, G_VOID | G_DISCARD);
1910
1911 FREETMPS;
1912 LEAVE;
1913 }
1914 }
1915 }
1916}
1917
1649INLINE void 1918INLINE void
1650prepare_cede (pTHX_ struct coro_transfer_args *ta) 1919prepare_cede (pTHX_ struct coro_transfer_args *ta)
1651{ 1920{
1652 api_ready (aTHX_ coro_current); 1921 api_ready (aTHX_ coro_current);
1653 prepare_schedule (aTHX_ ta); 1922 prepare_schedule (aTHX_ ta);
… …
1672{ 1941{
1673 struct coro_transfer_args ta; 1942 struct coro_transfer_args ta;
1674 1943
1675 prepare_schedule (aTHX_ &ta); 1944 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1); 1945 TRANSFER (ta, 1);
1946}
1947
1948static void
1949api_schedule_to (pTHX_ SV *coro_sv)
1950{
1951 struct coro_transfer_args ta;
1952 struct coro *next = SvSTATE (coro_sv);
1953
1954 SvREFCNT_inc_NN (coro_sv);
1955 prepare_schedule_to (aTHX_ &ta, next);
1677} 1956}
1678 1957
1679static int 1958static int
1680api_cede (pTHX) 1959api_cede (pTHX)
1681{ 1960{
… …
1710static void 1989static void
1711api_trace (pTHX_ SV *coro_sv, int flags) 1990api_trace (pTHX_ SV *coro_sv, int flags)
1712{ 1991{
1713 struct coro *coro = SvSTATE (coro_sv); 1992 struct coro *coro = SvSTATE (coro_sv);
1714 1993
1994 if (coro->flags & CF_RUNNING)
1995 croak ("cannot enable tracing on a running coroutine, caught");
1996
1715 if (flags & CC_TRACE) 1997 if (flags & CC_TRACE)
1716 { 1998 {
1717 if (!coro->cctx) 1999 if (!coro->cctx)
1718 coro->cctx = cctx_new_run (); 2000 coro->cctx = cctx_new_run ();
1719 else if (!(coro->cctx->flags & CC_TRACE)) 2001 else if (!(coro->cctx->flags & CC_TRACE))
1720 croak ("cannot enable tracing on coroutine with custom stack,"); 2002 croak ("cannot enable tracing on coroutine with custom stack, caught");
1721 2003
1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2004 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1723 } 2005 }
1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2006 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1725 { 2007 {
… …
1730 else 2012 else
1731 coro->slot->runops = RUNOPS_DEFAULT; 2013 coro->slot->runops = RUNOPS_DEFAULT;
1732 } 2014 }
1733} 2015}
1734 2016
2017static void
2018coro_call_on_destroy (pTHX_ struct coro *coro)
2019{
2020 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2021
2022 if (on_destroyp)
2023 {
2024 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2025 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2026 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2027
2028 while (AvFILLp (on_destroy) >= 0)
2029 {
2030 dSP; /* don't disturb outer sp */
2031 SV *cb = av_pop (on_destroy);
2032
2033 PUSHMARK (SP);
2034
2035 if (statusp)
2036 {
2037 int i;
2038 EXTEND (SP, AvFILLp (status) + 1);
2039
2040 for (i = 0; i <= AvFILLp (status); ++i)
2041 PUSHs (AvARRAY (status)[i]);
2042 }
2043
2044 PUTBACK;
2045 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2046 }
2047 }
2048}
2049
2050static void
2051coro_set_status (HV *coro_hv, SV **arg, int items)
2052{
2053 AV *av = newAV ();
2054
2055 /* items are actually not so common, so optimise for this case */
2056 if (items)
2057 {
2058 int i;
2059
2060 av_extend (av, items - 1);
2061
2062 for (i = 0; i < items; ++i)
2063 av_push (av, SvREFCNT_inc_NN (arg [i]));
2064 }
2065
2066 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2067}
2068
2069static void
2070slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2071{
2072 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2073 api_ready (aTHX_ sv_manager);
2074
2075 frame->prepare = prepare_schedule;
2076 frame->check = slf_check_repeat;
2077
2078 /* as a minor optimisation, we could unwind all stacks here */
2079 /* but that puts extra pressure on pp_slf, and is not worth much */
2080 /*coro_unwind_stacks (aTHX);*/
2081}
2082
2083static void
2084slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 HV *coro_hv = (HV *)SvRV (coro_current);
2087
2088 coro_set_status (coro_hv, arg, items);
2089 slf_init_terminate_cancel_common (frame, coro_hv);
2090}
2091
2092static void
2093slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 HV *coro_hv;
2096 struct coro *coro;
2097
2098 if (items <= 0)
2099 croak ("Coro::cancel called without coro object,");
2100
2101 coro = SvSTATE (arg [0]);
2102 coro_hv = coro->hv;
2103
2104 coro_set_status (coro_hv, arg + 1, items - 1);
2105
2106 if (expect_false (coro->flags & CF_NOCANCEL))
2107 {
2108 /* coro currently busy cancelling something, so just notify it */
2109 coro->slf_frame.data = (void *)coro;
2110
2111 frame->prepare = prepare_nop;
2112 frame->check = slf_check_nop;
2113 }
2114 else if (coro_hv == (HV *)SvRV (coro_current))
2115 {
2116 /* cancelling the current coro is allowed, and equals terminate */
2117 slf_init_terminate_cancel_common (frame, coro_hv);
2118 }
2119 else
2120 {
2121 struct coro *self = SvSTATE_current;
2122
2123 /* otherwise we cancel directly, purely for speed reasons
2124 * unfortunately, this requires some magic trickery, as
2125 * somebody else could cancel us, so we have to fight the cancellation.
2126 * this is ugly, and hopefully fully worth the extra speed.
2127 * besides, I can't get the slow-but-safe version working...
2128 */
2129 slf_frame.data = 0;
2130 self->flags |= CF_NOCANCEL;
2131
2132 coro_state_destroy (aTHX_ coro);
2133 coro_call_on_destroy (aTHX_ coro);
2134
2135 self->flags &= ~CF_NOCANCEL;
2136
2137 if (slf_frame.data)
2138 {
2139 /* while we were busy we have been cancelled, so terminate */
2140 slf_init_terminate_cancel_common (frame, self->hv);
2141 }
2142 else
2143 {
2144 frame->prepare = prepare_nop;
2145 frame->check = slf_check_nop;
2146 }
2147 }
2148}
2149
2150/*****************************************************************************/
2151/* async pool handler */
2152
2153static int
2154slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2155{
2156 HV *hv = (HV *)SvRV (coro_current);
2157 struct coro *coro = (struct coro *)frame->data;
2158
2159 if (!coro->invoke_cb)
2160 return 1; /* loop till we have invoke */
2161 else
2162 {
2163 hv_store (hv, "desc", sizeof ("desc") - 1,
2164 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2165
2166 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2167
2168 {
2169 dSP;
2170 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2171 PUTBACK;
2172 }
2173
2174 SvREFCNT_dec (GvAV (PL_defgv));
2175 GvAV (PL_defgv) = coro->invoke_av;
2176 coro->invoke_av = 0;
2177
2178 return 0;
2179 }
2180}
2181
2182static void
2183slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv ((SV *)hv);
2187
2188 if (expect_true (coro->saved_deffh))
2189 {
2190 /* subsequent iteration */
2191 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2192 coro->saved_deffh = 0;
2193
2194 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2195 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2196 {
2197 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2198 coro->invoke_av = newAV ();
2199
2200 frame->prepare = prepare_nop;
2201 }
2202 else
2203 {
2204 av_clear (GvAV (PL_defgv));
2205 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2206
2207 coro->prio = 0;
2208
2209 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2210 api_trace (aTHX_ coro_current, 0);
2211
2212 frame->prepare = prepare_schedule;
2213 av_push (av_async_pool, SvREFCNT_inc (hv));
2214 }
2215 }
2216 else
2217 {
2218 /* first iteration, simply fall through */
2219 frame->prepare = prepare_nop;
2220 }
2221
2222 frame->check = slf_check_pool_handler;
2223 frame->data = (void *)coro;
2224}
2225
1735/*****************************************************************************/ 2226/*****************************************************************************/
1736/* rouse callback */ 2227/* rouse callback */
1737 2228
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2229#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739 2230
1740static void 2231static void
1741coro_rouse_callback (pTHX_ CV *cv) 2232coro_rouse_callback (pTHX_ CV *cv)
1742{ 2233{
1743 dXSARGS; 2234 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG; 2235 SV *data = (SV *)S_GENSUB_ARG;
1745 2236
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2237 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 { 2238 {
1748 /* first call, set args */ 2239 /* first call, set args */
1749 int i; 2240 SV *coro = SvRV (data);
1750 AV *av = newAV (); 2241 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752 2242
1753 SvRV_set (data, (SV *)av); 2243 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756 2244
1757 /* better take a full copy of the arguments */ 2245 /* better take a full copy of the arguments */
1758 while (items--) 2246 while (items--)
1759 av_store (av, items, newSVsv (ST (items))); 2247 av_store (av, items, newSVsv (ST (items)));
2248
2249 api_ready (aTHX_ coro);
2250 SvREFCNT_dec (coro);
1760 } 2251 }
1761 2252
1762 XSRETURN_EMPTY; 2253 XSRETURN_EMPTY;
1763} 2254}
1764 2255
… …
1781 2272
1782 EXTEND (SP, AvFILLp (av) + 1); 2273 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i) 2274 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2275 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785 2276
1786 /* we have stolen the elements, so ste length to zero and free */ 2277 /* we have stolen the elements, so set length to zero and free */
1787 AvFILLp (av) = -1; 2278 AvFILLp (av) = -1;
1788 av_undef (av); 2279 av_undef (av);
1789 2280
1790 PUTBACK; 2281 PUTBACK;
1791 } 2282 }
… …
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV 2306 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2307 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,"); 2308 croak ("Coro::rouse_wait called with illegal callback argument,");
1818 2309
1819 { 2310 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2311 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG; 2312 SV *data = (SV *)S_GENSUB_ARG;
1822 2313
1823 frame->data = (void *)data; 2314 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2315 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait; 2316 frame->check = slf_check_rouse_wait;
1826 } 2317 }
… …
1830coro_new_rouse_cb (pTHX) 2321coro_new_rouse_cb (pTHX)
1831{ 2322{
1832 HV *hv = (HV *)SvRV (coro_current); 2323 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv); 2324 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv); 2325 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2326 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1836 2327
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2328 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */ 2329 SvREFCNT_dec (data); /* magicext increases the refcount */
1839 2330
1840 SvREFCNT_dec (coro->rouse_cb); 2331 SvREFCNT_dec (coro->rouse_cb);
… …
1895static void 2386static void
1896slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2387slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1897{ 2388{
1898 frame->prepare = prepare_schedule; 2389 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop; 2390 frame->check = slf_check_nop;
2391}
2392
2393static void
2394slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2395{
2396 struct coro *next = (struct coro *)slf_frame.data;
2397
2398 SvREFCNT_inc_NN (next->hv);
2399 prepare_schedule_to (aTHX_ ta, next);
2400}
2401
2402static void
2403slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2404{
2405 if (!items)
2406 croak ("Coro::schedule_to expects a coroutine argument, caught");
2407
2408 frame->data = (void *)SvSTATE (arg [0]);
2409 frame->prepare = slf_prepare_schedule_to;
2410 frame->check = slf_check_nop;
2411}
2412
2413static void
2414slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2415{
2416 api_ready (aTHX_ SvRV (coro_current));
2417
2418 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1900} 2419}
1901 2420
1902static void 2421static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2422slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{ 2423{
… …
2037 if (PL_op->op_flags & OPf_STACKED) 2556 if (PL_op->op_flags & OPf_STACKED)
2038 { 2557 {
2039 if (items > slf_arga) 2558 if (items > slf_arga)
2040 { 2559 {
2041 slf_arga = items; 2560 slf_arga = items;
2042 free (slf_argv); 2561 Safefree (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *)); 2562 New (0, slf_argv, slf_arga, SV *);
2044 } 2563 }
2045 2564
2046 slf_argc = items; 2565 slf_argc = items;
2047 2566
2048 for (i = 0; i < items; ++i) 2567 for (i = 0; i < items; ++i)
… …
2050 } 2569 }
2051 else 2570 else
2052 slf_argc = 0; 2571 slf_argc = 0;
2053 2572
2054 PL_op->op_ppaddr = pp_slf; 2573 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2574 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2056 2575
2057 PL_op = (OP *)&slf_restore; 2576 PL_op = (OP *)&slf_restore;
2577}
2578
2579/*****************************************************************************/
2580/* dynamic wind */
2581
2582static void
2583on_enterleave_call (pTHX_ SV *cb)
2584{
2585 dSP;
2586
2587 PUSHSTACK;
2588
2589 PUSHMARK (SP);
2590 PUTBACK;
2591 call_sv (cb, G_VOID | G_DISCARD);
2592 SPAGAIN;
2593
2594 POPSTACK;
2595}
2596
2597static SV *
2598coro_avp_pop_and_free (pTHX_ AV **avp)
2599{
2600 AV *av = *avp;
2601 SV *res = av_pop (av);
2602
2603 if (AvFILLp (av) < 0)
2604 {
2605 *avp = 0;
2606 SvREFCNT_dec (av);
2607 }
2608
2609 return res;
2610}
2611
2612static void
2613coro_pop_on_enter (pTHX_ void *coro)
2614{
2615 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2616 SvREFCNT_dec (cb);
2617}
2618
2619static void
2620coro_pop_on_leave (pTHX_ void *coro)
2621{
2622 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2623 on_enterleave_call (aTHX_ sv_2mortal (cb));
2058} 2624}
2059 2625
2060/*****************************************************************************/ 2626/*****************************************************************************/
2061/* PerlIO::cede */ 2627/* PerlIO::cede */
2062 2628
… …
2136/* Coro::Semaphore & Coro::Signal */ 2702/* Coro::Semaphore & Coro::Signal */
2137 2703
2138static SV * 2704static SV *
2139coro_waitarray_new (pTHX_ int count) 2705coro_waitarray_new (pTHX_ int count)
2140{ 2706{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2707 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV (); 2708 AV *av = newAV ();
2143 SV **ary; 2709 SV **ary;
2144 2710
2145 /* unfortunately, building manually saves memory */ 2711 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *); 2712 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary; 2713 AvALLOC (av) = ary;
2714#if PERL_VERSION_ATLEAST (5,10,0)
2148 /*AvARRAY (av) = ary;*/ 2715 AvARRAY (av) = ary;
2716#else
2149 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2717 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2718 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2719 SvPVX ((SV *)av) = (char *)ary;
2720#endif
2150 AvMAX (av) = 1; 2721 AvMAX (av) = 1;
2151 AvFILLp (av) = 0; 2722 AvFILLp (av) = 0;
2152 ary [0] = newSViv (count); 2723 ary [0] = newSViv (count);
2153 2724
2154 return newRV_noinc ((SV *)av); 2725 return newRV_noinc ((SV *)av);
… …
2174 AvARRAY (av)[0] = AvARRAY (av)[1]; 2745 AvARRAY (av)[0] = AvARRAY (av)[1];
2175 AvARRAY (av)[1] = count_sv; 2746 AvARRAY (av)[1] = count_sv;
2176 cb = av_shift (av); 2747 cb = av_shift (av);
2177 2748
2178 if (SvOBJECT (cb)) 2749 if (SvOBJECT (cb))
2750 {
2179 api_ready (aTHX_ cb); 2751 api_ready (aTHX_ cb);
2180 else 2752 --count;
2181 croak ("callbacks not yet supported"); 2753 }
2754 else if (SvTYPE (cb) == SVt_PVCV)
2755 {
2756 dSP;
2757 PUSHMARK (SP);
2758 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2759 PUTBACK;
2760 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2761 }
2182 2762
2183 SvREFCNT_dec (cb); 2763 SvREFCNT_dec (cb);
2184
2185 --count;
2186 } 2764 }
2187} 2765}
2188 2766
2189static void 2767static void
2190coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2768coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2272} 2850}
2273 2851
2274static void 2852static void
2275slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2853slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2276{ 2854{
2855 if (items >= 2)
2856 {
2857 /* callback form */
2858 AV *av = (AV *)SvRV (arg [0]);
2859 SV *cb_cv = s_get_cv_croak (arg [1]);
2860
2861 av_push (av, SvREFCNT_inc_NN (cb_cv));
2862
2863 if (SvIVX (AvARRAY (av)[0]) > 0)
2864 coro_semaphore_adjust (aTHX_ av, 0);
2865
2866 frame->prepare = prepare_nop;
2867 frame->check = slf_check_nop;
2868 }
2869 else
2870 {
2277 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 2871 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2278 frame->check = slf_check_semaphore_wait; 2872 frame->check = slf_check_semaphore_wait;
2873 }
2279} 2874}
2280 2875
2281/* signal */ 2876/* signal */
2282 2877
2283static void 2878static void
… …
2295 AvARRAY (av)[0] = AvARRAY (av)[1]; 2890 AvARRAY (av)[0] = AvARRAY (av)[1];
2296 AvARRAY (av)[1] = cb; 2891 AvARRAY (av)[1] = cb;
2297 2892
2298 cb = av_shift (av); 2893 cb = av_shift (av);
2299 2894
2895 if (SvTYPE (cb) == SVt_PVCV)
2896 {
2897 dSP;
2898 PUSHMARK (SP);
2899 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2900 PUTBACK;
2901 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2902 }
2903 else
2904 {
2300 api_ready (aTHX_ cb); 2905 api_ready (aTHX_ cb);
2301 sv_setiv (cb, 0); /* signal waiter */ 2906 sv_setiv (cb, 0); /* signal waiter */
2907 }
2908
2302 SvREFCNT_dec (cb); 2909 SvREFCNT_dec (cb);
2303 2910
2304 --count; 2911 --count;
2305 } 2912 }
2306} 2913}
… …
2315static void 2922static void
2316slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2923slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2317{ 2924{
2318 AV *av = (AV *)SvRV (arg [0]); 2925 AV *av = (AV *)SvRV (arg [0]);
2319 2926
2927 if (items >= 2)
2928 {
2929 SV *cb_cv = s_get_cv_croak (arg [1]);
2930 av_push (av, SvREFCNT_inc_NN (cb_cv));
2931
2320 if (SvIVX (AvARRAY (av)[0])) 2932 if (SvIVX (AvARRAY (av)[0]))
2933 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2934
2935 frame->prepare = prepare_nop;
2936 frame->check = slf_check_nop;
2937 }
2938 else if (SvIVX (AvARRAY (av)[0]))
2321 { 2939 {
2322 SvIVX (AvARRAY (av)[0]) = 0; 2940 SvIVX (AvARRAY (av)[0]) = 0;
2323 frame->prepare = prepare_nop; 2941 frame->prepare = prepare_nop;
2324 frame->check = slf_check_nop; 2942 frame->check = slf_check_nop;
2325 } 2943 }
2326 else 2944 else
2327 { 2945 {
2328 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 2946 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2329 2947
2330 av_push (av, waiter); 2948 av_push (av, waiter);
2331 2949
2332 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 2950 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2333 frame->prepare = prepare_schedule; 2951 frame->prepare = prepare_schedule;
… …
2351 2969
2352static void 2970static void
2353coro_aio_callback (pTHX_ CV *cv) 2971coro_aio_callback (pTHX_ CV *cv)
2354{ 2972{
2355 dXSARGS; 2973 dXSARGS;
2356 AV *state = (AV *)GENSUB_ARG; 2974 AV *state = (AV *)S_GENSUB_ARG;
2357 SV *coro = av_pop (state); 2975 SV *coro = av_pop (state);
2358 SV *data_sv = newSV (sizeof (struct io_state)); 2976 SV *data_sv = newSV (sizeof (struct io_state));
2359 2977
2360 av_extend (state, items); 2978 av_extend (state, items - 1);
2361 2979
2362 sv_upgrade (data_sv, SVt_PV); 2980 sv_upgrade (data_sv, SVt_PV);
2363 SvCUR_set (data_sv, sizeof (struct io_state)); 2981 SvCUR_set (data_sv, sizeof (struct io_state));
2364 SvPOK_only (data_sv); 2982 SvPOK_only (data_sv);
2365 2983
… …
2475 3093
2476 for (i = 0; i < items; ++i) 3094 for (i = 0; i < items; ++i)
2477 PUSHs (arg [i]); 3095 PUSHs (arg [i]);
2478 3096
2479 /* now push the callback closure */ 3097 /* now push the callback closure */
2480 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3098 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2481 3099
2482 /* now call the AIO function - we assume our request is uncancelable */ 3100 /* now call the AIO function - we assume our request is uncancelable */
2483 PUTBACK; 3101 PUTBACK;
2484 call_sv ((SV *)req, G_VOID | G_DISCARD); 3102 call_sv ((SV *)req, G_VOID | G_DISCARD);
2485 } 3103 }
2486 3104
2487 /* now that the requets is going, we loop toll we have a result */ 3105 /* now that the request is going, we loop till we have a result */
2488 frame->data = (void *)state; 3106 frame->data = (void *)state;
2489 frame->prepare = prepare_schedule; 3107 frame->prepare = prepare_schedule;
2490 frame->check = slf_check_aio_req; 3108 frame->check = slf_check_aio_req;
2491} 3109}
2492 3110
… …
2499 3117
2500 XSRETURN_EMPTY; 3118 XSRETURN_EMPTY;
2501} 3119}
2502 3120
2503/*****************************************************************************/ 3121/*****************************************************************************/
3122
3123#if CORO_CLONE
3124# include "clone.c"
3125#endif
3126
3127/*****************************************************************************/
3128
3129static SV *
3130coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3131{
3132 SV *coro_sv;
3133 struct coro *coro;
3134 MAGIC *mg;
3135 HV *hv;
3136 SV *cb;
3137 int i;
3138
3139 if (argc > 0)
3140 {
3141 cb = s_get_cv_croak (argv [0]);
3142
3143 if (!is_coro)
3144 {
3145 if (CvISXSUB (cb))
3146 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3147
3148 if (!CvROOT (cb))
3149 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3150 }
3151 }
3152
3153 Newz (0, coro, 1, struct coro);
3154 coro->args = newAV ();
3155 coro->flags = CF_NEW;
3156
3157 if (coro_first) coro_first->prev = coro;
3158 coro->next = coro_first;
3159 coro_first = coro;
3160
3161 coro->hv = hv = newHV ();
3162 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3163 mg->mg_flags |= MGf_DUP;
3164 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3165
3166 if (argc > 0)
3167 {
3168 av_extend (coro->args, argc + is_coro - 1);
3169
3170 if (is_coro)
3171 {
3172 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3173 cb = (SV *)cv_coro_run;
3174 }
3175
3176 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3177
3178 for (i = 1; i < argc; i++)
3179 av_push (coro->args, newSVsv (argv [i]));
3180 }
3181
3182 return coro_sv;
3183}
2504 3184
2505MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3185MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2506 3186
2507PROTOTYPES: DISABLE 3187PROTOTYPES: DISABLE
2508 3188
… …
2513 coro_thx = PERL_GET_CONTEXT; 3193 coro_thx = PERL_GET_CONTEXT;
2514# endif 3194# endif
2515#endif 3195#endif
2516 BOOT_PAGESIZE; 3196 BOOT_PAGESIZE;
2517 3197
3198 cctx_current = cctx_new_empty ();
3199
2518 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3200 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2519 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3201 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2520 3202
2521 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3203 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2522 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3204 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2541 3223
2542 { 3224 {
2543 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3225 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2544 3226
2545 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3227 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2546 hv_store_ent (PL_custom_op_names, slf, 3228 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2547 newSVpv ("coro_slf", 0), 0);
2548 3229
2549 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3230 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2550 hv_store_ent (PL_custom_op_descs, slf, 3231 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2551 newSVpv ("coro schedule like function", 0), 0);
2552 } 3232 }
2553 3233
2554 coroapi.ver = CORO_API_VERSION; 3234 coroapi.ver = CORO_API_VERSION;
2555 coroapi.rev = CORO_API_REVISION; 3235 coroapi.rev = CORO_API_REVISION;
2556 3236
… …
2561 coroapi.prepare_nop = prepare_nop; 3241 coroapi.prepare_nop = prepare_nop;
2562 coroapi.prepare_schedule = prepare_schedule; 3242 coroapi.prepare_schedule = prepare_schedule;
2563 coroapi.prepare_cede = prepare_cede; 3243 coroapi.prepare_cede = prepare_cede;
2564 coroapi.prepare_cede_notself = prepare_cede_notself; 3244 coroapi.prepare_cede_notself = prepare_cede_notself;
2565 3245
2566 { 3246 time_init (aTHX);
2567 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2568 3247
2569 if (!svp) croak ("Time::HiRes is required");
2570 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2571
2572 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2573 }
2574
2575 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3248 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2576} 3249}
2577 3250
2578SV * 3251SV *
2579new (char *klass, ...) 3252new (SV *klass, ...)
3253 ALIAS:
3254 Coro::new = 1
2580 CODE: 3255 CODE:
2581{ 3256 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2582 struct coro *coro; 3257 OUTPUT:
2583 MAGIC *mg;
2584 HV *hv;
2585 int i;
2586
2587 Newz (0, coro, 1, struct coro);
2588 coro->args = newAV ();
2589 coro->flags = CF_NEW;
2590
2591 if (coro_first) coro_first->prev = coro;
2592 coro->next = coro_first;
2593 coro_first = coro;
2594
2595 coro->hv = hv = newHV ();
2596 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2597 mg->mg_flags |= MGf_DUP;
2598 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2599
2600 av_extend (coro->args, items - 1);
2601 for (i = 1; i < items; i++)
2602 av_push (coro->args, newSVsv (ST (i)));
2603}
2604 OUTPUT:
2605 RETVAL 3258 RETVAL
2606 3259
2607void 3260void
2608transfer (...) 3261transfer (...)
2609 PROTOTYPE: $$ 3262 PROTOTYPE: $$
2610 CODE: 3263 CODE:
2611 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3264 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2612 3265
2613bool
2614_destroy (SV *coro_sv)
2615 CODE:
2616 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2617 OUTPUT:
2618 RETVAL
2619
2620void 3266void
2621_exit (int code) 3267_exit (int code)
2622 PROTOTYPE: $ 3268 PROTOTYPE: $
2623 CODE: 3269 CODE:
2624 _exit (code); 3270 _exit (code);
3271
3272SV *
3273clone (Coro::State coro)
3274 CODE:
3275{
3276#if CORO_CLONE
3277 struct coro *ncoro = coro_clone (aTHX_ coro);
3278 MAGIC *mg;
3279 /* TODO: too much duplication */
3280 ncoro->hv = newHV ();
3281 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3282 mg->mg_flags |= MGf_DUP;
3283 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3284#else
3285 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3286#endif
3287}
3288 OUTPUT:
3289 RETVAL
2625 3290
2626int 3291int
2627cctx_stacksize (int new_stacksize = 0) 3292cctx_stacksize (int new_stacksize = 0)
2628 PROTOTYPE: ;$ 3293 PROTOTYPE: ;$
2629 CODE: 3294 CODE:
… …
2679 eval = 1 3344 eval = 1
2680 CODE: 3345 CODE:
2681{ 3346{
2682 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3347 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2683 { 3348 {
2684 struct coro temp; 3349 struct coro *current = SvSTATE_current;
3350 struct CoroSLF slf_save;
2685 3351
2686 if (!(coro->flags & CF_RUNNING)) 3352 if (current != coro)
2687 { 3353 {
2688 PUTBACK; 3354 PUTBACK;
2689 save_perl (aTHX_ &temp); 3355 save_perl (aTHX_ current);
2690 load_perl (aTHX_ coro); 3356 load_perl (aTHX_ coro);
3357 /* the coro is most likely in an active SLF call.
3358 * while not strictly required (the code we execute is
3359 * not allowed to call any SLF functions), it's cleaner
3360 * to reinitialise the slf_frame and restore it later.
3361 * This might one day allow us to actually do SLF calls
3362 * from code executed here.
3363 */
3364 slf_save = slf_frame;
3365 slf_frame.prepare = 0;
3366 SPAGAIN;
2691 } 3367 }
2692 3368
2693 {
2694 dSP;
2695 ENTER;
2696 SAVETMPS;
2697 PUTBACK;
2698 PUSHSTACK; 3369 PUSHSTACK;
3370
2699 PUSHMARK (SP); 3371 PUSHMARK (SP);
3372 PUTBACK;
2700 3373
2701 if (ix) 3374 if (ix)
2702 eval_sv (coderef, 0); 3375 eval_sv (coderef, 0);
2703 else 3376 else
2704 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3377 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2705 3378
2706 POPSTACK; 3379 POPSTACK;
2707 SPAGAIN; 3380 SPAGAIN;
2708 FREETMPS;
2709 LEAVE;
2710 PUTBACK;
2711 }
2712 3381
2713 if (!(coro->flags & CF_RUNNING)) 3382 if (current != coro)
2714 { 3383 {
3384 PUTBACK;
3385 slf_frame = slf_save;
2715 save_perl (aTHX_ coro); 3386 save_perl (aTHX_ coro);
2716 load_perl (aTHX_ &temp); 3387 load_perl (aTHX_ current);
2717 SPAGAIN; 3388 SPAGAIN;
2718 } 3389 }
2719 } 3390 }
2720} 3391}
2721 3392
… …
2725 ALIAS: 3396 ALIAS:
2726 is_ready = CF_READY 3397 is_ready = CF_READY
2727 is_running = CF_RUNNING 3398 is_running = CF_RUNNING
2728 is_new = CF_NEW 3399 is_new = CF_NEW
2729 is_destroyed = CF_DESTROYED 3400 is_destroyed = CF_DESTROYED
3401 is_suspended = CF_SUSPENDED
2730 CODE: 3402 CODE:
2731 RETVAL = boolSV (coro->flags & ix); 3403 RETVAL = boolSV (coro->flags & ix);
2732 OUTPUT: 3404 OUTPUT:
2733 RETVAL 3405 RETVAL
2734 3406
2735void 3407void
2736throw (Coro::State self, SV *throw = &PL_sv_undef) 3408throw (Coro::State self, SV *exception = &PL_sv_undef)
2737 PROTOTYPE: $;$ 3409 PROTOTYPE: $;$
2738 CODE: 3410 CODE:
2739{ 3411{
2740 struct coro *current = SvSTATE_current; 3412 struct coro *current = SvSTATE_current;
2741 SV **throwp = self == current ? &CORO_THROW : &self->except; 3413 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2742 SvREFCNT_dec (*throwp); 3414 SvREFCNT_dec (*exceptionp);
2743 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3415 SvGETMAGIC (exception);
3416 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2744} 3417}
2745 3418
2746void 3419void
2747api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3420api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2748 PROTOTYPE: $;$ 3421 PROTOTYPE: $;$
… …
2750 3423
2751SV * 3424SV *
2752has_cctx (Coro::State coro) 3425has_cctx (Coro::State coro)
2753 PROTOTYPE: $ 3426 PROTOTYPE: $
2754 CODE: 3427 CODE:
2755 RETVAL = boolSV (!!coro->cctx); 3428 /* maybe manage the running flag differently */
3429 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2756 OUTPUT: 3430 OUTPUT:
2757 RETVAL 3431 RETVAL
2758 3432
2759int 3433int
2760is_traced (Coro::State coro) 3434is_traced (Coro::State coro)
… …
2780 3454
2781void 3455void
2782force_cctx () 3456force_cctx ()
2783 PROTOTYPE: 3457 PROTOTYPE:
2784 CODE: 3458 CODE:
2785 SvSTATE_current->cctx->idle_sp = 0; 3459 cctx_current->idle_sp = 0;
2786 3460
2787void 3461void
2788swap_defsv (Coro::State self) 3462swap_defsv (Coro::State self)
2789 PROTOTYPE: $ 3463 PROTOTYPE: $
2790 ALIAS: 3464 ALIAS:
… …
2798 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3472 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2799 3473
2800 SV *tmp = *src; *src = *dst; *dst = tmp; 3474 SV *tmp = *src; *src = *dst; *dst = tmp;
2801 } 3475 }
2802 3476
3477void
3478cancel (Coro::State self)
3479 CODE:
3480 coro_state_destroy (aTHX_ self);
3481
3482SV *
3483enable_times (int enabled = enable_times)
3484 CODE:
3485{
3486 RETVAL = boolSV (enable_times);
3487
3488 if (enabled != enable_times)
3489 {
3490 enable_times = enabled;
3491
3492 coro_times_update ();
3493 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3494 }
3495}
3496 OUTPUT:
3497 RETVAL
3498
3499void
3500times (Coro::State self)
3501 PPCODE:
3502{
3503 struct coro *current = SvSTATE (coro_current);
3504
3505 if (expect_false (current == self))
3506 {
3507 coro_times_update ();
3508 coro_times_add (SvSTATE (coro_current));
3509 }
3510
3511 EXTEND (SP, 2);
3512 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3513 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3514
3515 if (expect_false (current == self))
3516 coro_times_sub (SvSTATE (coro_current));
3517}
3518
3519void
3520swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3521 CODE:
3522{
3523 struct coro *current = SvSTATE_current;
3524
3525 if (current == coro)
3526 SWAP_SVS (current);
3527
3528 if (!coro->swap_sv)
3529 coro->swap_sv = newAV ();
3530
3531 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3532 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3533
3534 if (current == coro)
3535 SWAP_SVS (current);
3536}
3537
2803 3538
2804MODULE = Coro::State PACKAGE = Coro 3539MODULE = Coro::State PACKAGE = Coro
2805 3540
2806BOOT: 3541BOOT:
2807{ 3542{
2808 int i;
2809
2810 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2811 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3543 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2812 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3544 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2813 3545 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3546 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2814 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3547 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2815 SvREADONLY_on (coro_current); 3548 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3549 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3550 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3551 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2816 3552
3553 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3554 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3555 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3556 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3557
2817 coro_stash = gv_stashpv ("Coro", TRUE); 3558 coro_stash = gv_stashpv ("Coro", TRUE);
2818 3559
2819 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3560 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2820 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3561 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2821 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3562 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2822 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3563 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2823 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3564 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2824 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3565 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2825
2826 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2827 coro_ready[i] = newAV ();
2828 3566
2829 { 3567 {
2830 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3568 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2831 3569
2832 coroapi.schedule = api_schedule; 3570 coroapi.schedule = api_schedule;
3571 coroapi.schedule_to = api_schedule_to;
2833 coroapi.cede = api_cede; 3572 coroapi.cede = api_cede;
2834 coroapi.cede_notself = api_cede_notself; 3573 coroapi.cede_notself = api_cede_notself;
2835 coroapi.ready = api_ready; 3574 coroapi.ready = api_ready;
2836 coroapi.is_ready = api_is_ready; 3575 coroapi.is_ready = api_is_ready;
2837 coroapi.nready = coro_nready; 3576 coroapi.nready = coro_nready;
… …
2841 sv_setiv (sv, (IV)&coroapi); 3580 sv_setiv (sv, (IV)&coroapi);
2842 SvREADONLY_on (sv); 3581 SvREADONLY_on (sv);
2843 } 3582 }
2844} 3583}
2845 3584
3585SV *
3586async (...)
3587 PROTOTYPE: &@
3588 CODE:
3589 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3590 api_ready (aTHX_ RETVAL);
3591 OUTPUT:
3592 RETVAL
3593
3594void
3595_destroy (Coro::State coro)
3596 CODE:
3597 /* used by the manager thread */
3598 coro_state_destroy (aTHX_ coro);
3599 coro_call_on_destroy (aTHX_ coro);
3600
3601void
3602terminate (...)
3603 CODE:
3604 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3605
3606void
3607cancel (...)
3608 CODE:
3609 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3610
2846void 3611void
2847schedule (...) 3612schedule (...)
2848 CODE: 3613 CODE:
2849 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3614 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3615
3616void
3617schedule_to (...)
3618 CODE:
3619 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3620
3621void
3622cede_to (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2850 3625
2851void 3626void
2852cede (...) 3627cede (...)
2853 CODE: 3628 CODE:
2854 CORO_EXECUTE_SLF_XS (slf_init_cede); 3629 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2868void 3643void
2869_set_readyhook (SV *hook) 3644_set_readyhook (SV *hook)
2870 PROTOTYPE: $ 3645 PROTOTYPE: $
2871 CODE: 3646 CODE:
2872 SvREFCNT_dec (coro_readyhook); 3647 SvREFCNT_dec (coro_readyhook);
3648 SvGETMAGIC (hook);
3649 if (SvOK (hook))
3650 {
2873 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3651 coro_readyhook = newSVsv (hook);
3652 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3653 }
3654 else
3655 {
3656 coro_readyhook = 0;
3657 CORO_READYHOOK = 0;
3658 }
2874 3659
2875int 3660int
2876prio (Coro::State coro, int newprio = 0) 3661prio (Coro::State coro, int newprio = 0)
2877 PROTOTYPE: $;$ 3662 PROTOTYPE: $;$
2878 ALIAS: 3663 ALIAS:
… …
2884 if (items > 1) 3669 if (items > 1)
2885 { 3670 {
2886 if (ix) 3671 if (ix)
2887 newprio = coro->prio - newprio; 3672 newprio = coro->prio - newprio;
2888 3673
2889 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3674 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2890 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3675 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2891 3676
2892 coro->prio = newprio; 3677 coro->prio = newprio;
2893 } 3678 }
2894} 3679}
2895 OUTPUT: 3680 OUTPUT:
… …
2909 CODE: 3694 CODE:
2910 RETVAL = coro_nready; 3695 RETVAL = coro_nready;
2911 OUTPUT: 3696 OUTPUT:
2912 RETVAL 3697 RETVAL
2913 3698
2914# for async_pool speedup
2915void 3699void
2916_pool_1 (SV *cb) 3700suspend (Coro::State self)
3701 PROTOTYPE: $
2917 CODE: 3702 CODE:
2918{ 3703 self->flags |= CF_SUSPENDED;
2919 HV *hv = (HV *)SvRV (coro_current);
2920 struct coro *coro = SvSTATE_hv ((SV *)hv);
2921 AV *defav = GvAV (PL_defgv);
2922 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2923 AV *invoke_av;
2924 int i, len;
2925 3704
2926 if (!invoke) 3705void
3706resume (Coro::State self)
3707 PROTOTYPE: $
3708 CODE:
3709 self->flags &= ~CF_SUSPENDED;
3710
3711void
3712_pool_handler (...)
3713 CODE:
3714 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3715
3716void
3717async_pool (SV *cv, ...)
3718 PROTOTYPE: &@
3719 PPCODE:
3720{
3721 HV *hv = (HV *)av_pop (av_async_pool);
3722 AV *av = newAV ();
3723 SV *cb = ST (0);
3724 int i;
3725
3726 av_extend (av, items - 2);
3727 for (i = 1; i < items; ++i)
3728 av_push (av, SvREFCNT_inc_NN (ST (i)));
3729
3730 if ((SV *)hv == &PL_sv_undef)
2927 { 3731 {
2928 SV *old = PL_diehook; 3732 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2929 PL_diehook = 0; 3733 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2930 SvREFCNT_dec (old); 3734 SvREFCNT_dec (sv);
2931 croak ("\3async_pool terminate\2\n");
2932 } 3735 }
2933 3736
2934 SvREFCNT_dec (coro->saved_deffh);
2935 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2936
2937 hv_store (hv, "desc", sizeof ("desc") - 1,
2938 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2939
2940 invoke_av = (AV *)SvRV (invoke);
2941 len = av_len (invoke_av);
2942
2943 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2944
2945 if (len > 0)
2946 { 3737 {
2947 av_fill (defav, len - 1); 3738 struct coro *coro = SvSTATE_hv (hv);
2948 for (i = 0; i < len; ++i) 3739
2949 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3740 assert (!coro->invoke_cb);
3741 assert (!coro->invoke_av);
3742 coro->invoke_cb = SvREFCNT_inc (cb);
3743 coro->invoke_av = av;
2950 } 3744 }
2951}
2952 3745
2953void 3746 api_ready (aTHX_ (SV *)hv);
2954_pool_2 (SV *cb)
2955 CODE:
2956{
2957 HV *hv = (HV *)SvRV (coro_current);
2958 struct coro *coro = SvSTATE_hv ((SV *)hv);
2959 3747
2960 sv_setsv (cb, &PL_sv_undef); 3748 if (GIMME_V != G_VOID)
2961 3749 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
2962 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3750 else
2963 coro->saved_deffh = 0;
2964
2965 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2966 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2967 {
2968 SV *old = PL_diehook;
2969 PL_diehook = 0;
2970 SvREFCNT_dec (old); 3751 SvREFCNT_dec (hv);
2971 croak ("\3async_pool terminate\2\n");
2972 }
2973
2974 av_clear (GvAV (PL_defgv));
2975 hv_store (hv, "desc", sizeof ("desc") - 1,
2976 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2977
2978 coro->prio = 0;
2979
2980 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2981 api_trace (aTHX_ coro_current, 0);
2982
2983 av_push (av_async_pool, newSVsv (coro_current));
2984} 3752}
2985 3753
2986SV * 3754SV *
2987rouse_cb () 3755rouse_cb ()
2988 PROTOTYPE: 3756 PROTOTYPE:
… …
2990 RETVAL = coro_new_rouse_cb (aTHX); 3758 RETVAL = coro_new_rouse_cb (aTHX);
2991 OUTPUT: 3759 OUTPUT:
2992 RETVAL 3760 RETVAL
2993 3761
2994void 3762void
2995rouse_wait (SV *cb = 0) 3763rouse_wait (...)
2996 PROTOTYPE: ;$ 3764 PROTOTYPE: ;$
2997 PPCODE: 3765 PPCODE:
2998 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 3766 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2999 3767
3768void
3769on_enter (SV *block)
3770 ALIAS:
3771 on_leave = 1
3772 PROTOTYPE: &
3773 CODE:
3774{
3775 struct coro *coro = SvSTATE_current;
3776 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3777
3778 block = s_get_cv_croak (block);
3779
3780 if (!*avp)
3781 *avp = newAV ();
3782
3783 av_push (*avp, SvREFCNT_inc (block));
3784
3785 if (!ix)
3786 on_enterleave_call (aTHX_ block);
3787
3788 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3789 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3790 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3791}
3792
3000 3793
3001MODULE = Coro::State PACKAGE = PerlIO::cede 3794MODULE = Coro::State PACKAGE = PerlIO::cede
3002 3795
3003BOOT: 3796BOOT:
3004 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3797 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3007MODULE = Coro::State PACKAGE = Coro::Semaphore 3800MODULE = Coro::State PACKAGE = Coro::Semaphore
3008 3801
3009SV * 3802SV *
3010new (SV *klass, SV *count = 0) 3803new (SV *klass, SV *count = 0)
3011 CODE: 3804 CODE:
3805{
3806 int semcnt = 1;
3807
3808 if (count)
3809 {
3810 SvGETMAGIC (count);
3811
3812 if (SvOK (count))
3813 semcnt = SvIV (count);
3814 }
3815
3012 RETVAL = sv_bless ( 3816 RETVAL = sv_bless (
3013 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 3817 coro_waitarray_new (aTHX_ semcnt),
3014 GvSTASH (CvGV (cv)) 3818 GvSTASH (CvGV (cv))
3015 ); 3819 );
3820}
3016 OUTPUT: 3821 OUTPUT:
3017 RETVAL 3822 RETVAL
3018 3823
3019# helper for Coro::Channel 3824# helper for Coro::Channel and others
3020SV * 3825SV *
3021_alloc (int count) 3826_alloc (int count)
3022 CODE: 3827 CODE:
3023 RETVAL = coro_waitarray_new (aTHX_ count); 3828 RETVAL = coro_waitarray_new (aTHX_ count);
3024 OUTPUT: 3829 OUTPUT:
… …
3037 adjust = 1 3842 adjust = 1
3038 CODE: 3843 CODE:
3039 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3844 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3040 3845
3041void 3846void
3042down (SV *self) 3847down (...)
3043 CODE: 3848 CODE:
3044 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3849 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3045 3850
3046void 3851void
3047wait (SV *self) 3852wait (...)
3048 CODE: 3853 CODE:
3049 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 3854 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3050 3855
3051void 3856void
3052try (SV *self) 3857try (SV *self)
… …
3082 for (i = 1; i <= wcount; ++i) 3887 for (i = 1; i <= wcount; ++i)
3083 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3888 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3084 } 3889 }
3085} 3890}
3086 3891
3892MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3893
3894void
3895_may_delete (SV *sem, int count, int extra_refs)
3896 PPCODE:
3897{
3898 AV *av = (AV *)SvRV (sem);
3899
3900 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3901 && AvFILLp (av) == 0 /* no waiters, just count */
3902 && SvIV (AvARRAY (av)[0]) == count)
3903 XSRETURN_YES;
3904
3905 XSRETURN_NO;
3906}
3907
3087MODULE = Coro::State PACKAGE = Coro::Signal 3908MODULE = Coro::State PACKAGE = Coro::Signal
3088 3909
3089SV * 3910SV *
3090new (SV *klass) 3911new (SV *klass)
3091 CODE: 3912 CODE:
… …
3095 ); 3916 );
3096 OUTPUT: 3917 OUTPUT:
3097 RETVAL 3918 RETVAL
3098 3919
3099void 3920void
3100wait (SV *self) 3921wait (...)
3101 CODE: 3922 CODE:
3102 CORO_EXECUTE_SLF_XS (slf_init_signal_wait); 3923 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3103 3924
3104void 3925void
3105broadcast (SV *self) 3926broadcast (SV *self)
… …
3162 3983
3163void 3984void
3164_register (char *target, char *proto, SV *req) 3985_register (char *target, char *proto, SV *req)
3165 CODE: 3986 CODE:
3166{ 3987{
3167 HV *st; 3988 SV *req_cv = s_get_cv_croak (req);
3168 GV *gvp;
3169 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3170 /* newXSproto doesn't return the CV on 5.8 */ 3989 /* newXSproto doesn't return the CV on 5.8 */
3171 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 3990 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3172 sv_setpv ((SV *)slf_cv, proto); 3991 sv_setpv ((SV *)slf_cv, proto);
3173 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3992 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3174} 3993}
3175 3994
3995MODULE = Coro::State PACKAGE = Coro::Select
3996
3997void
3998patch_pp_sselect ()
3999 CODE:
4000 if (!coro_old_pp_sselect)
4001 {
4002 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4003 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4004 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4005 }
4006
4007void
4008unpatch_pp_sselect ()
4009 CODE:
4010 if (coro_old_pp_sselect)
4011 {
4012 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4013 coro_old_pp_sselect = 0;
4014 }
4015

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