ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.311 by root, Thu Nov 20 01:12:08 2008 UTC vs.
Revision 1.397 by root, Fri May 6 21:15:17 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);
131static void slf_destroy (pTHX_ struct coro *coro);
163 132
164static U32 cctx_gen; 133static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 134static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 135static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 136static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 137static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 138static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 139static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 140
141static AV *av_destroy; /* destruction queue */
142static SV *sv_manager; /* the manager coro */
143static SV *sv_idle; /* $Coro::idle */
144
172static GV *irsgv; /* $/ */ 145static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 146static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 147static SV *rv_diehook;
175static SV *rv_warnhook; 148static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 149static HV *hv_sig; /* %SIG */
177 150
178/* async_pool helper stuff */ 151/* async_pool helper stuff */
179static SV *sv_pool_rss; 152static SV *sv_pool_rss;
180static SV *sv_pool_size; 153static SV *sv_pool_size;
154static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 155static AV *av_async_pool; /* idle pool */
156static SV *sv_Coro; /* class string */
157static CV *cv_pool_handler;
182 158
183/* Coro::AnyEvent */ 159/* Coro::AnyEvent */
184static SV *sv_activity; 160static SV *sv_activity;
161
162/* enable processtime/realtime profiling */
163static char enable_times;
164typedef U32 coro_ts[2];
165static coro_ts time_real, time_cpu;
166static char times_valid;
185 167
186static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
188 170
189enum { 171enum {
… …
215 int valgrind_id; 197 int valgrind_id;
216#endif 198#endif
217 unsigned char flags; 199 unsigned char flags;
218} coro_cctx; 200} coro_cctx;
219 201
202static coro_cctx *cctx_current; /* the currently running cctx */
203
204/*****************************************************************************/
205
220enum { 206enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv; 218 SV *defsv;
231 AV *defav; 219 AV *defav;
232 SV *errsv; 220 SV *errsv;
233 SV *irsgv; 221 SV *irsgv;
222 HV *hinthv;
234#define VAR(name,type) type name; 223#define VAR(name,type) type name;
235# include "state.h" 224# include "state.h"
236#undef VAR 225#undef VAR
237} perl_slots; 226} perl_slots;
238 227
… …
240 229
241/* this is a structure representing a perl-level coroutine */ 230/* this is a structure representing a perl-level coroutine */
242struct coro { 231struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 232 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 233 coro_cctx *cctx;
234
235 /* ready queue */
236 struct coro *next_ready;
245 237
246 /* state data */ 238 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 239 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 240 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 241 perl_slots *slot; /* basically the saved sp */
… …
251 CV *startcv; /* the CV to execute */ 243 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 248
258 /* statistics */ 249 /* statistics */
259 int usecount; /* number of transfers to this coro */ 250 int usecount; /* number of transfers to this coro */
260 251
261 /* coro process data */ 252 /* coro process data */
… …
263 SV *except; /* exception to be thrown */ 254 SV *except; /* exception to be thrown */
264 SV *rouse_cb; 255 SV *rouse_cb;
265 256
266 /* async_pool */ 257 /* async_pool */
267 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;
268 271
269 /* linked list */ 272 /* linked list */
270 struct coro *next, *prev; 273 struct coro *next, *prev;
271}; 274};
272 275
273typedef struct coro *Coro__State; 276typedef struct coro *Coro__State;
274typedef struct coro *Coro__State_or_hashref; 277typedef struct coro *Coro__State_or_hashref;
275 278
276/* the following variables are effectively part of the perl context */ 279/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */ 280/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */ 281/* the main reason we don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */ 282static struct CoroSLF slf_frame; /* the current slf frame */
280 283
281/** Coro ********************************************************************/ 284/** Coro ********************************************************************/
282 285
283#define PRIO_MAX 3 286#define CORO_PRIO_MAX 3
284#define PRIO_HIGH 1 287#define CORO_PRIO_HIGH 1
285#define PRIO_NORMAL 0 288#define CORO_PRIO_NORMAL 0
286#define PRIO_LOW -1 289#define CORO_PRIO_LOW -1
287#define PRIO_IDLE -3 290#define CORO_PRIO_IDLE -3
288#define PRIO_MIN -4 291#define CORO_PRIO_MIN -4
289 292
290/* for Coro.pm */ 293/* for Coro.pm */
291static SV *coro_current; 294static SV *coro_current;
292static SV *coro_readyhook; 295static SV *coro_readyhook;
293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
294static CV *cv_coro_run; 297static CV *cv_coro_run;
295static struct coro *coro_first; 298static struct coro *coro_first;
296#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
297 372
298/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
299 374
300static SV * 375static SV *
301coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
… …
325 get_hv (name, create); 400 get_hv (name, create);
326#endif 401#endif
327 return get_hv (name, create); 402 return get_hv (name, create);
328} 403}
329 404
330/* may croak */ 405INLINE void
331INLINE CV * 406coro_times_update ()
332coro_sv_2cv (pTHX_ SV *sv)
333{ 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{
334 HV *st; 474 HV *stash;
335 GV *gvp; 475 MAGIC *mg;
336 return sv_2cv (sv, &st, &gvp, 0); 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;
337} 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 */
338 503
339static AV * 504static AV *
340coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
341{ 506{
342 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
344 509
345 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 516#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 518 --AvFILLp (padlist);
354 519
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
357 522
358 return newpadlist; 523 return newpadlist;
359} 524}
360 525
361static void 526static void
362free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
363{ 528{
364 /* may be during global destruction */ 529 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
366 { 531 {
367 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
368 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
369 { 535 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
371 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 538 I32 j = AvFILLp (av);
373 SV *sv; 539
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 545 }
380 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
382 } 551 }
383} 552}
384 553
385static int 554static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 556{
388 AV *padlist; 557 AV *padlist;
389 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;
390 563
391 /* casting is fun. */ 564 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
394 567
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 569
397 return 0; 570 return 0;
398} 571}
399
400#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 572
403static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 574 0, 0, 0, 0,
405 coro_cv_free 575 coro_cv_free
406}; 576};
407
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
413#define CORO_MAGIC(sv, type) \
414 (expect_true (SvMAGIC (sv)) \
415 ? CORO_MAGIC_NN (sv, type) \
416 : 0)
417
418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
420
421INLINE struct coro *
422SvSTATE_ (pTHX_ SV *coro)
423{
424 HV *stash;
425 MAGIC *mg;
426
427 if (SvROK (coro))
428 coro = SvRV (coro);
429
430 if (expect_false (SvTYPE (coro) != SVt_PVHV))
431 croak ("Coro::State object required");
432
433 stash = SvSTASH (coro);
434 if (expect_false (stash != coro_stash && stash != coro_state_stash))
435 {
436 /* very slow, but rare, check */
437 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
438 croak ("Coro::State object required");
439 }
440
441 mg = CORO_MAGIC_state (coro);
442 return (struct coro *)mg->mg_ptr;
443}
444
445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
450 577
451/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
452static void 579static void
453get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
454{ 581{
… …
465 CV *cp = Perl_cv_clone (aTHX_ cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
466 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
467 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
468 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
469#else 596#else
470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
471#endif 598#endif
472 } 599 }
473} 600}
474 601
475static void 602static void
… …
482 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);
483 610
484 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
485 612
486 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
487 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
488 615
489 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
490} 617}
491 618
492/** 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);
493 674
494static void 675static void
495load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
496{ 677{
497 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
498 c->slot = 0; 679 c->slot = 0;
499 680
500 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
501 682
502 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
503 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
504 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
505 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
506 688
507 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
508 # include "state.h" 690 # include "state.h"
509 #undef VAR 691 #undef VAR
510 692
… …
524 PUTBACK; 706 PUTBACK;
525 } 707 }
526 708
527 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
528 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);
529} 729}
530 730
531static void 731static void
532save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
533{ 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
534 c->except = CORO_THROW; 752 c->except = CORO_THROW;
535 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
536 754
537 { 755 {
538 dSP; 756 dSP;
… …
551 { 769 {
552 while (expect_true (cxix >= 0)) 770 while (expect_true (cxix >= 0))
553 { 771 {
554 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
555 773
556 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))
557 { 775 {
558 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
559 777
560 if (expect_true (CvDEPTH (cv))) 778 if (expect_true (CvDEPTH (cv)))
561 { 779 {
… …
585 /* we manually unroll here, as usually 2 slots is enough */ 803 /* we manually unroll here, as usually 2 slots is enough */
586 if (SLOT_COUNT >= 1) CXINC; 804 if (SLOT_COUNT >= 1) CXINC;
587 if (SLOT_COUNT >= 2) CXINC; 805 if (SLOT_COUNT >= 2) CXINC;
588 if (SLOT_COUNT >= 3) CXINC; 806 if (SLOT_COUNT >= 3) CXINC;
589 { 807 {
590 int i; 808 unsigned int i;
591 for (i = 3; i < SLOT_COUNT; ++i) 809 for (i = 3; i < SLOT_COUNT; ++i)
592 CXINC; 810 CXINC;
593 } 811 }
594 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 812 cxstack_ix -= SLOT_COUNT; /* undo allocation */
595 813
596 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
597 815
598 { 816 {
599 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
600 818
601 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
602 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
603 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
604 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
605 824
606 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
607 # include "state.h" 826 # include "state.h"
608 #undef VAR 827 #undef VAR
609 } 828 }
… …
687#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
688 Safefree (PL_retstack); 907 Safefree (PL_retstack);
689#endif 908#endif
690} 909}
691 910
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
692static size_t 920static size_t
693coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
694{ 922{
695 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
696 924
697 if (coro->mainstack) 925 if (coro->mainstack)
698 { 926 {
699 perl_slots tmp_slot;
700 perl_slots *slot;
701
702 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
703 { 928 {
704 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
705 930 CORO_RSS;
706 #define VAR(name,type) slot->name = PL_ ## name;
707 # include "state.h"
708 #undef VAR 931 #undef SYM
709 } 932 }
710 else 933 else
711 slot = coro->slot;
712
713 if (slot)
714 { 934 {
715 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
716 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
717 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
718 rss += slot->tmps_max * sizeof (SV *);
719 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
720 rss += slot->scopestack_max * sizeof (I32);
721 rss += slot->savestack_max * sizeof (ANY);
722
723#if !PERL_VERSION_ATLEAST (5,10,0)
724 rss += slot->retstack_max * sizeof (OP *);
725#endif
726 } 938 }
727 } 939 }
728 940
729 return rss; 941 return rss;
730} 942}
… …
743#endif 955#endif
744 956
745/* 957/*
746 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
747 * 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
748 * 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
749 * readback here. 961 * readback here.
750 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
751 * not expecting this to actually change the hook. This is a potential problem
752 * when a schedule happens then, but we ignore this.
753 */ 962 */
754static int 963static int
755coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
756{ 965{
757 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
810 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
811 1020
812 if (svp) 1021 if (svp)
813 { 1022 {
814 SV *old = *svp; 1023 SV *old = *svp;
815 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
816 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
817 return 0; 1026 return 0;
818 } 1027 }
819 } 1028 }
820 1029
… …
832slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
833{ 1042{
834 return 0; 1043 return 0;
835} 1044}
836 1045
837static UNOP coro_setup_op; 1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
838 1053
839static 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 */
840coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
841{ 1056{
842 /* 1057 /*
843 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
844 */ 1059 */
845 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
846 1061
847 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
848 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
849 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
850 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
851 PL_curpm = 0; 1069 PL_curpm = 0;
852 PL_curpad = 0; 1070 PL_curpad = 0;
853 PL_localizing = 0; 1071 PL_localizing = 0;
854 PL_dirty = 0;
855 PL_restartop = 0; 1072 PL_restartop = 0;
856#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
857 PL_parser = 0; 1074 PL_parser = 0;
858#endif 1075#endif
1076 PL_hints = 0;
859 1077
860 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
861 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 );
862 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);
863 1081
864 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
865 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
866 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
867 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;
868 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
869 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
870 1089
871 { 1090 {
872 dSP; 1091 dSP;
… …
889 */ 1108 */
890 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 */
891 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 */
892 1111
893 /* 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 */
894 coro_setup_op.op_next = PL_op; 1113 init_perl_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM; 1114 init_perl_op.op_type = OP_ENTERSUB;
896 coro_setup_op.op_ppaddr = pp_slf; 1115 init_perl_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */ 1116 /* no flags etc. required, as an init function won't be called */
898 1117
899 PL_op = (OP *)&coro_setup_op; 1118 PL_op = (OP *)&init_perl_op;
900 1119
901 /* copy throw, in case it was set before coro_setup */ 1120 /* copy throw, in case it was set before init_perl */
902 CORO_THROW = coro->except; 1121 CORO_THROW = coro->except;
903}
904 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
905static void 1132static void
906coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
907{ 1134{
908 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
909 { 1136 {
910 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
911 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
919 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
920 1147
921 /* unwind main stack */ 1148 /* unwind main stack */
922 dounwind (-1); 1149 dounwind (-1);
923 } 1150 }
1151}
924 1152
925 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
926 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
927 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
928 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
929 SvREFCNT_dec (PL_rs);
930 SvREFCNT_dec (GvSV (irsgv));
931 1157
932 SvREFCNT_dec (PL_diehook);
933 SvREFCNT_dec (PL_warnhook);
934 1158 {
1159 SV *old_current = SvRV (coro_current);
1160 struct coro *current = SvSTATE (old_current);
1161
1162 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1163
1164 save_perl (aTHX_ current);
1165
1166 /* this will cause transfer_check to croak on block*/
1167 SvRV_set (coro_current, (SV *)coro->hv);
1168
1169 load_perl (aTHX_ coro);
1170
1171 coro_unwind_stacks (aTHX);
1172 coro_destruct_stacks (aTHX);
1173
1174 /* restore swapped sv's */
1175 SWAP_SVS (coro);
1176
1177 // now save some sv's to be free'd later
1178 svf [0] = GvSV (PL_defgv);
1179 svf [1] = (SV *)GvAV (PL_defgv);
1180 svf [2] = GvSV (PL_errgv);
1181 svf [3] = (SV *)PL_defoutgv;
1182 svf [4] = PL_rs;
1183 svf [5] = GvSV (irsgv);
1184 svf [6] = (SV *)GvHV (PL_hintgv);
1185 svf [7] = PL_diehook;
1186 svf [8] = PL_warnhook;
1187 assert (9 == sizeof (svf) / sizeof (*svf));
1188
1189 SvRV_set (coro_current, old_current);
1190
1191 load_perl (aTHX_ current);
1192 }
1193
1194 {
1195 unsigned int i;
1196
1197 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1198 SvREFCNT_dec (svf [i]);
1199
935 SvREFCNT_dec (coro->saved_deffh); 1200 SvREFCNT_dec (coro->saved_deffh);
936 SvREFCNT_dec (coro->rouse_cb); 1201 SvREFCNT_dec (coro->rouse_cb);
937 1202 SvREFCNT_dec (coro->invoke_cb);
938 coro_destruct_stacks (aTHX); 1203 SvREFCNT_dec (coro->invoke_av);
1204 }
939} 1205}
940 1206
941INLINE void 1207INLINE void
942free_coro_mortal (pTHX) 1208free_coro_mortal (pTHX)
943{ 1209{
… …
951static int 1217static int
952runops_trace (pTHX) 1218runops_trace (pTHX)
953{ 1219{
954 COP *oldcop = 0; 1220 COP *oldcop = 0;
955 int oldcxix = -2; 1221 int oldcxix = -2;
956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
957 coro_cctx *cctx = coro->cctx;
958 1222
959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1223 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
960 { 1224 {
961 PERL_ASYNC_CHECK (); 1225 PERL_ASYNC_CHECK ();
962 1226
963 if (cctx->flags & CC_TRACE_ALL) 1227 if (cctx_current->flags & CC_TRACE_ALL)
964 { 1228 {
965 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1229 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
966 { 1230 {
967 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1231 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
968 SV **bot, **top; 1232 SV **bot, **top;
969 AV *av = newAV (); /* return values */ 1233 AV *av = newAV (); /* return values */
970 SV **cb; 1234 SV **cb;
… …
1007 1271
1008 if (PL_curcop != &PL_compiling) 1272 if (PL_curcop != &PL_compiling)
1009 { 1273 {
1010 SV **cb; 1274 SV **cb;
1011 1275
1012 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1276 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1013 { 1277 {
1014 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1278 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1015 1279
1016 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1280 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1017 { 1281 {
1018 runops_proc_t old_runops = PL_runops;
1019 dSP; 1282 dSP;
1020 GV *gv = CvGV (cx->blk_sub.cv); 1283 GV *gv = CvGV (cx->blk_sub.cv);
1021 SV *fullname = sv_2mortal (newSV (0)); 1284 SV *fullname = sv_2mortal (newSV (0));
1022 1285
1023 if (isGV (gv)) 1286 if (isGV (gv))
… …
1041 } 1304 }
1042 1305
1043 oldcxix = cxstack_ix; 1306 oldcxix = cxstack_ix;
1044 } 1307 }
1045 1308
1046 if (cctx->flags & CC_TRACE_LINE) 1309 if (cctx_current->flags & CC_TRACE_LINE)
1047 { 1310 {
1048 dSP; 1311 dSP;
1049 1312
1050 PL_runops = RUNOPS_DEFAULT; 1313 PL_runops = RUNOPS_DEFAULT;
1051 ENTER; 1314 ENTER;
… …
1070 1333
1071 TAINT_NOT; 1334 TAINT_NOT;
1072 return 0; 1335 return 0;
1073} 1336}
1074 1337
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame; 1338static struct CoroSLF cctx_ssl_frame;
1077 1339
1078static void 1340static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1341slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{ 1342{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0; 1343 ta->prev = 0;
1083} 1344}
1084 1345
1085static int 1346static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1347slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{ 1348{
… …
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1351 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091} 1352}
1092 1353
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1354/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1094static void NOINLINE 1355static void NOINLINE
1095cctx_prepare (pTHX_ coro_cctx *cctx) 1356cctx_prepare (pTHX)
1096{ 1357{
1097 PL_top_env = &PL_start_env; 1358 PL_top_env = &PL_start_env;
1098 1359
1099 if (cctx->flags & CC_TRACE) 1360 if (cctx_current->flags & CC_TRACE)
1100 PL_runops = runops_trace; 1361 PL_runops = runops_trace;
1101 1362
1102 /* we already must be executing an SLF op, there is no other valid way 1363 /* we already must be executing an SLF op, there is no other valid way
1103 * that can lead to creation of a new cctx */ 1364 * that can lead to creation of a new cctx */
1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1365 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1366 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1106 1367
1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1368 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1108 cctx_ssl_cctx = cctx;
1109 cctx_ssl_frame = slf_frame; 1369 cctx_ssl_frame = slf_frame;
1110 1370
1111 slf_frame.prepare = slf_prepare_set_stacklevel; 1371 slf_frame.prepare = slf_prepare_set_stacklevel;
1112 slf_frame.check = slf_check_set_stacklevel; 1372 slf_frame.check = slf_check_set_stacklevel;
1113} 1373}
… …
1136 /* normally we would need to skip the entersub here */ 1396 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1397 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1398 /* PL_nop = PL_nop->op_next */
1139 1399
1140 /* inject a fake subroutine call to cctx_init */ 1400 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1401 cctx_prepare (aTHX);
1142 1402
1143 /* cctx_run is the alternative tail of transfer() */ 1403 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX); 1404 transfer_tail (aTHX);
1145 1405
1146 /* somebody or something will hit me for both perl_run and PL_restartop */ 1406 /* somebody or something will hit me for both perl_run and PL_restartop */
1147 PL_restartop = PL_op; 1407 PL_restartop = PL_op;
1148 perl_run (PL_curinterp); 1408 perl_run (PL_curinterp);
1149 /* 1409 /*
1150 * Unfortunately, there is no way to get at the return values of the 1410 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these 1411 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1412 * runtime errors here, as this is just a random interpreter, not a thread.
1152 */ 1413 */
1153 1414
1154 /* 1415 /*
1155 * If perl-run returns we assume exit() was being called or the coro 1416 * If perl-run returns we assume exit() was being called or the coro
1156 * fell off the end, which seems to be the only valid (non-bug) 1417 * fell off the end, which seems to be the only valid (non-bug)
1157 * reason for perl_run to return. We try to exit by jumping to the 1418 * reason for perl_run to return. We try to exit by jumping to the
1158 * bootstrap-time "top" top_env, as we cannot restore the "main" 1419 * bootstrap-time "top" top_env, as we cannot restore the "main"
1159 * coroutine as Coro has no such concept 1420 * coroutine as Coro has no such concept.
1421 * This actually isn't valid with the pthread backend, but OSes requiring
1422 * that backend are too broken to do it in a standards-compliant way.
1160 */ 1423 */
1161 PL_top_env = main_top_env; 1424 PL_top_env = main_top_env;
1162 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1425 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1163 } 1426 }
1164} 1427}
… …
1241cctx_destroy (coro_cctx *cctx) 1504cctx_destroy (coro_cctx *cctx)
1242{ 1505{
1243 if (!cctx) 1506 if (!cctx)
1244 return; 1507 return;
1245 1508
1509 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1510
1246 --cctx_count; 1511 --cctx_count;
1247 coro_destroy (&cctx->cctx); 1512 coro_destroy (&cctx->cctx);
1248 1513
1249 /* coro_transfer creates new, empty cctx's */ 1514 /* coro_transfer creates new, empty cctx's */
1250 if (cctx->sptr) 1515 if (cctx->sptr)
… …
1313 /* TODO: throwing up here is considered harmful */ 1578 /* TODO: throwing up here is considered harmful */
1314 1579
1315 if (expect_true (prev != next)) 1580 if (expect_true (prev != next))
1316 { 1581 {
1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1582 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1583 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1319 1584
1320 if (expect_false (next->flags & CF_RUNNING))
1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1322
1323 if (expect_false (next->flags & CF_DESTROYED)) 1585 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1586 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1325 1587
1326#if !PERL_VERSION_ATLEAST (5,10,0) 1588#if !PERL_VERSION_ATLEAST (5,10,0)
1327 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1589 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1590 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1329#endif 1591#endif
… …
1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1597transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1336{ 1598{
1337 dSTACKLEVEL; 1599 dSTACKLEVEL;
1338 1600
1339 /* sometimes transfer is only called to set idle_sp */ 1601 /* sometimes transfer is only called to set idle_sp */
1340 if (expect_false (!next)) 1602 if (expect_false (!prev))
1341 { 1603 {
1342 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1604 cctx_current->idle_sp = STACKLEVEL;
1343 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1605 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1344 } 1606 }
1345 else if (expect_true (prev != next)) 1607 else if (expect_true (prev != next))
1346 { 1608 {
1347 coro_cctx *prev__cctx; 1609 coro_cctx *cctx_prev;
1348 1610
1349 if (expect_false (prev->flags & CF_NEW)) 1611 if (expect_false (prev->flags & CF_NEW))
1350 { 1612 {
1351 /* create a new empty/source context */ 1613 /* create a new empty/source context */
1352 prev->cctx = cctx_new_empty ();
1353 prev->flags &= ~CF_NEW; 1614 prev->flags &= ~CF_NEW;
1354 prev->flags |= CF_RUNNING; 1615 prev->flags |= CF_RUNNING;
1355 } 1616 }
1356 1617
1357 prev->flags &= ~CF_RUNNING; 1618 prev->flags &= ~CF_RUNNING;
… …
1363 if (expect_false (next->flags & CF_NEW)) 1624 if (expect_false (next->flags & CF_NEW))
1364 { 1625 {
1365 /* need to start coroutine */ 1626 /* need to start coroutine */
1366 next->flags &= ~CF_NEW; 1627 next->flags &= ~CF_NEW;
1367 /* setup coroutine call */ 1628 /* setup coroutine call */
1368 coro_setup (aTHX_ next); 1629 init_perl (aTHX_ next);
1369 } 1630 }
1370 else 1631 else
1371 load_perl (aTHX_ next); 1632 load_perl (aTHX_ next);
1372 1633
1373 prev__cctx = prev->cctx;
1374
1375 /* possibly untie and reuse the cctx */ 1634 /* possibly untie and reuse the cctx */
1376 if (expect_true ( 1635 if (expect_true (
1377 prev__cctx->idle_sp == STACKLEVEL 1636 cctx_current->idle_sp == STACKLEVEL
1378 && !(prev__cctx->flags & CC_TRACE) 1637 && !(cctx_current->flags & CC_TRACE)
1379 && !force_cctx 1638 && !force_cctx
1380 )) 1639 ))
1381 { 1640 {
1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1641 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1642 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1384 1643
1385 prev->cctx = 0;
1386
1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1644 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1388 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1645 /* without this the next cctx_get might destroy the running cctx while still in use */
1389 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1646 if (expect_false (CCTX_EXPIRED (cctx_current)))
1390 if (!next->cctx) 1647 if (expect_true (!next->cctx))
1391 next->cctx = cctx_get (aTHX); 1648 next->cctx = cctx_get (aTHX);
1392 1649
1393 cctx_put (prev__cctx); 1650 cctx_put (cctx_current);
1394 } 1651 }
1652 else
1653 prev->cctx = cctx_current;
1395 1654
1396 ++next->usecount; 1655 ++next->usecount;
1397 1656
1398 if (expect_true (!next->cctx)) 1657 cctx_prev = cctx_current;
1399 next->cctx = cctx_get (aTHX); 1658 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1400 1659
1401 if (expect_false (prev__cctx != next->cctx)) 1660 next->cctx = 0;
1661
1662 if (expect_false (cctx_prev != cctx_current))
1402 { 1663 {
1403 prev__cctx->top_env = PL_top_env; 1664 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1665 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1666 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1667 }
1407 1668
1408 transfer_tail (aTHX); 1669 transfer_tail (aTHX);
1409 } 1670 }
1410} 1671}
… …
1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1673#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1674#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1414 1675
1415/** high level stuff ********************************************************/ 1676/** high level stuff ********************************************************/
1416 1677
1417static int 1678static void
1418coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1680{
1420 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_DESTROYED)
1421 return 0; 1682 return;
1422 1683
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro); 1684 slf_destroy (aTHX_ coro);
1425 1685
1426 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_DESTROYED;
1427 1687
1428 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1429 { 1689 {
… …
1432 --coro_nready; 1692 --coro_nready;
1433 } 1693 }
1434 else 1694 else
1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1436 1696
1437 if (coro->mainstack && coro->mainstack != main_mainstack) 1697 if (coro->mainstack
1438 { 1698 && coro->mainstack != main_mainstack
1439 struct coro temp; 1699 && coro->slot
1440 1700 && !PL_dirty)
1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1701 destroy_perl (aTHX_ coro);
1445 1702
1446 coro_destruct (aTHX_ coro); 1703 if (coro->next) coro->next->prev = coro->prev;
1447 1704 if (coro->prev) coro->prev->next = coro->next;
1448 load_perl (aTHX_ &temp); 1705 if (coro == coro_first) coro_first = coro->next;
1449
1450 coro->slot = 0;
1451 }
1452 1706
1453 cctx_destroy (coro->cctx); 1707 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv); 1708 SvREFCNT_dec (coro->startcv);
1455 SvREFCNT_dec (coro->args); 1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1456 SvREFCNT_dec (CORO_THROW); 1711 SvREFCNT_dec (CORO_THROW);
1457
1458 if (coro->next) coro->next->prev = coro->prev;
1459 if (coro->prev) coro->prev->next = coro->next;
1460 if (coro == coro_first) coro_first = coro->next;
1461
1462 return 1;
1463} 1712}
1464 1713
1465static int 1714static int
1466coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1715coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1467{ 1716{
… …
1515 1764
1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1765 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1517 TRANSFER (ta, 1); 1766 TRANSFER (ta, 1);
1518} 1767}
1519 1768
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1541}
1542
1543/** Coro ********************************************************************/ 1769/** Coro ********************************************************************/
1544 1770
1545INLINE void 1771INLINE void
1546coro_enq (pTHX_ struct coro *coro) 1772coro_enq (pTHX_ struct coro *coro)
1547{ 1773{
1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1774 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1549}
1550 1775
1551INLINE SV * 1776 SvREFCNT_inc_NN (coro->hv);
1777
1778 coro->next_ready = 0;
1779 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1780 ready [1] = coro;
1781}
1782
1783INLINE struct coro *
1552coro_deq (pTHX) 1784coro_deq (pTHX)
1553{ 1785{
1554 int prio; 1786 int prio;
1555 1787
1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1788 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1557 if (AvFILLp (coro_ready [prio]) >= 0) 1789 {
1558 return av_shift (coro_ready [prio]); 1790 struct coro **ready = coro_ready [prio];
1791
1792 if (ready [0])
1793 {
1794 struct coro *coro = ready [0];
1795 ready [0] = coro->next_ready;
1796 return coro;
1797 }
1798 }
1559 1799
1560 return 0; 1800 return 0;
1801}
1802
1803static void
1804invoke_sv_ready_hook_helper (void)
1805{
1806 dTHX;
1807 dSP;
1808
1809 ENTER;
1810 SAVETMPS;
1811
1812 PUSHMARK (SP);
1813 PUTBACK;
1814 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1815
1816 FREETMPS;
1817 LEAVE;
1561} 1818}
1562 1819
1563static int 1820static int
1564api_ready (pTHX_ SV *coro_sv) 1821api_ready (pTHX_ SV *coro_sv)
1565{ 1822{
1566 struct coro *coro;
1567 SV *sv_hook;
1568 void (*xs_hook)(void);
1569
1570 if (SvROK (coro_sv))
1571 coro_sv = SvRV (coro_sv);
1572
1573 coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1574 1824
1575 if (coro->flags & CF_READY) 1825 if (coro->flags & CF_READY)
1576 return 0; 1826 return 0;
1577 1827
1578 coro->flags |= CF_READY; 1828 coro->flags |= CF_READY;
1579 1829
1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1582
1583 coro_enq (aTHX_ coro); 1830 coro_enq (aTHX_ coro);
1584 ++coro_nready;
1585 1831
1586 if (sv_hook) 1832 if (!coro_nready++)
1587 { 1833 if (coroapi.readyhook)
1588 dSP; 1834 coroapi.readyhook ();
1589
1590 ENTER;
1591 SAVETMPS;
1592
1593 PUSHMARK (SP);
1594 PUTBACK;
1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1596
1597 FREETMPS;
1598 LEAVE;
1599 }
1600
1601 if (xs_hook)
1602 xs_hook ();
1603 1835
1604 return 1; 1836 return 1;
1605} 1837}
1606 1838
1607static int 1839static int
1608api_is_ready (pTHX_ SV *coro_sv) 1840api_is_ready (pTHX_ SV *coro_sv)
1609{ 1841{
1610 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1842 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1611} 1843}
1612 1844
1845/* expects to own a reference to next->hv */
1613INLINE void 1846INLINE void
1614prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1847prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1615{ 1848{
1616 SV *prev_sv, *next_sv;
1617
1618 for (;;)
1619 {
1620 next_sv = coro_deq (aTHX);
1621
1622 /* nothing to schedule: call the idle handler */
1623 if (expect_false (!next_sv))
1624 {
1625 dSP;
1626
1627 ENTER;
1628 SAVETMPS;
1629
1630 PUSHMARK (SP);
1631 PUTBACK;
1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1633
1634 FREETMPS;
1635 LEAVE;
1636 continue;
1637 }
1638
1639 ta->next = SvSTATE_hv (next_sv);
1640
1641 /* cannot transfer to destroyed coros, skip and look for next */
1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1643 {
1644 SvREFCNT_dec (next_sv);
1645 /* coro_nready has already been taken care of by destroy */
1646 continue;
1647 }
1648
1649 --coro_nready;
1650 break;
1651 }
1652
1653 /* free this only after the transfer */
1654 prev_sv = SvRV (coro_current); 1849 SV *prev_sv = SvRV (coro_current);
1850
1655 ta->prev = SvSTATE_hv (prev_sv); 1851 ta->prev = SvSTATE_hv (prev_sv);
1852 ta->next = next;
1853
1656 TRANSFER_CHECK (*ta); 1854 TRANSFER_CHECK (*ta);
1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1855
1658 ta->next->flags &= ~CF_READY;
1659 SvRV_set (coro_current, next_sv); 1856 SvRV_set (coro_current, (SV *)next->hv);
1660 1857
1661 free_coro_mortal (aTHX); 1858 free_coro_mortal (aTHX);
1662 coro_mortal = prev_sv; 1859 coro_mortal = prev_sv;
1663} 1860}
1664 1861
1862static void
1863prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1864{
1865 for (;;)
1866 {
1867 struct coro *next = coro_deq (aTHX);
1868
1869 if (expect_true (next))
1870 {
1871 /* cannot transfer to destroyed coros, skip and look for next */
1872 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1873 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1874 else
1875 {
1876 next->flags &= ~CF_READY;
1877 --coro_nready;
1878
1879 prepare_schedule_to (aTHX_ ta, next);
1880 break;
1881 }
1882 }
1883 else
1884 {
1885 /* nothing to schedule: call the idle handler */
1886 if (SvROK (sv_idle)
1887 && SvOBJECT (SvRV (sv_idle)))
1888 {
1889 if (SvRV (sv_idle) == SvRV (coro_current))
1890 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1891
1892 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1893 api_ready (aTHX_ SvRV (sv_idle));
1894 --coro_nready;
1895 }
1896 else
1897 {
1898 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1899 dSP;
1900
1901 ENTER;
1902 SAVETMPS;
1903
1904 PUSHMARK (SP);
1905 PUTBACK;
1906 call_sv (sv_idle, G_VOID | G_DISCARD);
1907
1908 FREETMPS;
1909 LEAVE;
1910 }
1911 }
1912 }
1913}
1914
1665INLINE void 1915INLINE void
1666prepare_cede (pTHX_ struct coro_transfer_args *ta) 1916prepare_cede (pTHX_ struct coro_transfer_args *ta)
1667{ 1917{
1668 api_ready (aTHX_ coro_current); 1918 api_ready (aTHX_ coro_current);
1669 prepare_schedule (aTHX_ ta); 1919 prepare_schedule (aTHX_ ta);
… …
1688{ 1938{
1689 struct coro_transfer_args ta; 1939 struct coro_transfer_args ta;
1690 1940
1691 prepare_schedule (aTHX_ &ta); 1941 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1); 1942 TRANSFER (ta, 1);
1943}
1944
1945static void
1946api_schedule_to (pTHX_ SV *coro_sv)
1947{
1948 struct coro_transfer_args ta;
1949 struct coro *next = SvSTATE (coro_sv);
1950
1951 SvREFCNT_inc_NN (coro_sv);
1952 prepare_schedule_to (aTHX_ &ta, next);
1693} 1953}
1694 1954
1695static int 1955static int
1696api_cede (pTHX) 1956api_cede (pTHX)
1697{ 1957{
… …
1726static void 1986static void
1727api_trace (pTHX_ SV *coro_sv, int flags) 1987api_trace (pTHX_ SV *coro_sv, int flags)
1728{ 1988{
1729 struct coro *coro = SvSTATE (coro_sv); 1989 struct coro *coro = SvSTATE (coro_sv);
1730 1990
1991 if (coro->flags & CF_RUNNING)
1992 croak ("cannot enable tracing on a running coroutine, caught");
1993
1731 if (flags & CC_TRACE) 1994 if (flags & CC_TRACE)
1732 { 1995 {
1733 if (!coro->cctx) 1996 if (!coro->cctx)
1734 coro->cctx = cctx_new_run (); 1997 coro->cctx = cctx_new_run ();
1735 else if (!(coro->cctx->flags & CC_TRACE)) 1998 else if (!(coro->cctx->flags & CC_TRACE))
1736 croak ("cannot enable tracing on coroutine with custom stack,"); 1999 croak ("cannot enable tracing on coroutine with custom stack, caught");
1737 2000
1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2001 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1739 } 2002 }
1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2003 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1741 { 2004 {
… …
1746 else 2009 else
1747 coro->slot->runops = RUNOPS_DEFAULT; 2010 coro->slot->runops = RUNOPS_DEFAULT;
1748 } 2011 }
1749} 2012}
1750 2013
2014static void
2015coro_call_on_destroy (pTHX_ struct coro *coro)
2016{
2017 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2018
2019 if (on_destroyp)
2020 {
2021 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2022 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2023 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2024
2025 while (AvFILLp (on_destroy) >= 0)
2026 {
2027 dSP; /* don't disturb outer sp */
2028 SV *cb = av_pop (on_destroy);
2029
2030 PUSHMARK (SP);
2031
2032 if (statusp)
2033 {
2034 int i;
2035 EXTEND (SP, AvFILLp (status) + 1);
2036
2037 for (i = 0; i <= AvFILLp (status); ++i)
2038 PUSHs (AvARRAY (status)[i]);
2039 }
2040
2041 PUTBACK;
2042 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2043 }
2044 }
2045}
2046
2047static void
2048coro_set_status (HV *coro_hv, SV **arg, int items)
2049{
2050 AV *av = newAV ();
2051
2052 /* items are actually not so common, so optimise for this case */
2053 if (items)
2054 {
2055 int i;
2056
2057 av_extend (av, items - 1);
2058
2059 for (i = 0; i < items; ++i)
2060 av_push (av, SvREFCNT_inc_NN (arg [i]));
2061 }
2062
2063 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2064}
2065
2066static void
2067slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2068{
2069 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2070 api_ready (aTHX_ sv_manager);
2071
2072 frame->prepare = prepare_schedule;
2073 frame->check = slf_check_repeat;
2074
2075 /* as a minor optimisation, we could unwind all stacks here */
2076 /* but that puts extra pressure on pp_slf, and is not worth much */
2077 /*coro_unwind_stacks (aTHX);*/
2078}
2079
2080static void
2081slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2082{
2083 HV *coro_hv = (HV *)SvRV (coro_current);
2084
2085 coro_set_status (coro_hv, arg, items);
2086 slf_init_terminate_cancel_common (frame, coro_hv);
2087}
2088
2089static void
2090slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 HV *coro_hv;
2093 struct coro *coro;
2094
2095 if (items <= 0)
2096 croak ("Coro::cancel called without coro object,");
2097
2098 coro = SvSTATE (arg [0]);
2099 coro_hv = coro->hv;
2100
2101 coro_set_status (coro_hv, arg + 1, items - 1);
2102
2103 if (expect_false (coro->flags & CF_NOCANCEL))
2104 {
2105 /* coro currently busy cancelling something, so just notify it */
2106 coro->slf_frame.data = (void *)coro;
2107
2108 frame->prepare = prepare_nop;
2109 frame->check = slf_check_nop;
2110 }
2111 else if (coro_hv == (HV *)SvRV (coro_current))
2112 {
2113 /* cancelling the current coro is allowed, and equals terminate */
2114 slf_init_terminate_cancel_common (frame, coro_hv);
2115 }
2116 else
2117 {
2118 struct coro *self = SvSTATE_current;
2119
2120 /* otherwise we cancel directly, purely for speed reasons
2121 * unfortunately, this requires some magic trickery, as
2122 * somebody else could cancel us, so we have to fight the cancellation.
2123 * this is ugly, and hopefully fully worth the extra speed.
2124 * besides, I can't get the slow-but-safe version working...
2125 */
2126 slf_frame.data = 0;
2127 self->flags |= CF_NOCANCEL;
2128
2129 coro_state_destroy (aTHX_ coro);
2130 coro_call_on_destroy (aTHX_ coro);
2131
2132 self->flags &= ~CF_NOCANCEL;
2133
2134 if (slf_frame.data)
2135 {
2136 /* while we were busy we have been cancelled, so terminate */
2137 slf_init_terminate_cancel_common (frame, self->hv);
2138 }
2139 else
2140 {
2141 frame->prepare = prepare_nop;
2142 frame->check = slf_check_nop;
2143 }
2144 }
2145}
2146
2147static int
2148slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2149{
2150 frame->prepare = 0;
2151 coro_unwind_stacks ();
2152
2153 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2154
2155 return 1;
2156}
2157
2158static int
2159safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2160{
2161 if (coro->cctx)
2162 croak ("coro inside C callback, unable to cancel at this time, caught");
2163
2164 if (coro->flags & CF_NEW)
2165 {
2166 coro_set_status (coro->hv, arg, items);
2167 coro_state_destroy (aTHX_ coro);
2168 coro_call_on_destroy (aTHX_ coro);
2169 }
2170 else
2171 {
2172 if (!coro->slf_frame.prepare)
2173 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2174
2175 slf_destroy (coro);
2176
2177 coro_set_status (coro->hv, arg, items);
2178 coro->slf_frame.prepare = prepare_nop;
2179 coro->slf_frame.check = slf_check_safe_cancel;
2180
2181 api_ready (aTHX_ coro->hv);
2182 }
2183
2184 return 1;
2185}
2186
2187/*****************************************************************************/
2188/* async pool handler */
2189
2190static int
2191slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2192{
2193 HV *hv = (HV *)SvRV (coro_current);
2194 struct coro *coro = (struct coro *)frame->data;
2195
2196 if (!coro->invoke_cb)
2197 return 1; /* loop till we have invoke */
2198 else
2199 {
2200 hv_store (hv, "desc", sizeof ("desc") - 1,
2201 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2202
2203 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2204
2205 {
2206 dSP;
2207 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2208 PUTBACK;
2209 }
2210
2211 SvREFCNT_dec (GvAV (PL_defgv));
2212 GvAV (PL_defgv) = coro->invoke_av;
2213 coro->invoke_av = 0;
2214
2215 return 0;
2216 }
2217}
2218
2219static void
2220slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *hv = (HV *)SvRV (coro_current);
2223 struct coro *coro = SvSTATE_hv ((SV *)hv);
2224
2225 if (expect_true (coro->saved_deffh))
2226 {
2227 /* subsequent iteration */
2228 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2229 coro->saved_deffh = 0;
2230
2231 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2232 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2233 {
2234 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2235 return;
2236 }
2237 else
2238 {
2239 av_clear (GvAV (PL_defgv));
2240 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2241
2242 coro->prio = 0;
2243
2244 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2245 api_trace (aTHX_ coro_current, 0);
2246
2247 frame->prepare = prepare_schedule;
2248 av_push (av_async_pool, SvREFCNT_inc (hv));
2249 }
2250 }
2251 else
2252 {
2253 /* first iteration, simply fall through */
2254 frame->prepare = prepare_nop;
2255 }
2256
2257 frame->check = slf_check_pool_handler;
2258 frame->data = (void *)coro;
2259}
2260
1751/*****************************************************************************/ 2261/*****************************************************************************/
1752/* rouse callback */ 2262/* rouse callback */
1753 2263
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2264#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755 2265
1756static void 2266static void
1757coro_rouse_callback (pTHX_ CV *cv) 2267coro_rouse_callback (pTHX_ CV *cv)
1758{ 2268{
1759 dXSARGS; 2269 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG; 2270 SV *data = (SV *)S_GENSUB_ARG;
1761 2271
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2272 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1763 { 2273 {
1764 /* first call, set args */ 2274 /* first call, set args */
1765 int i; 2275 SV *coro = SvRV (data);
1766 AV *av = newAV (); 2276 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768 2277
1769 SvRV_set (data, (SV *)av); 2278 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772 2279
1773 /* better take a full copy of the arguments */ 2280 /* better take a full copy of the arguments */
1774 while (items--) 2281 while (items--)
1775 av_store (av, items, newSVsv (ST (items))); 2282 av_store (av, items, newSVsv (ST (items)));
2283
2284 api_ready (aTHX_ coro);
2285 SvREFCNT_dec (coro);
1776 } 2286 }
1777 2287
1778 XSRETURN_EMPTY; 2288 XSRETURN_EMPTY;
1779} 2289}
1780 2290
… …
1797 2307
1798 EXTEND (SP, AvFILLp (av) + 1); 2308 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i) 2309 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2310 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801 2311
1802 /* we have stolen the elements, so ste length to zero and free */ 2312 /* we have stolen the elements, so set length to zero and free */
1803 AvFILLp (av) = -1; 2313 AvFILLp (av) = -1;
1804 av_undef (av); 2314 av_undef (av);
1805 2315
1806 PUTBACK; 2316 PUTBACK;
1807 } 2317 }
… …
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV 2341 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2342 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,"); 2343 croak ("Coro::rouse_wait called with illegal callback argument,");
1834 2344
1835 { 2345 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2346 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG; 2347 SV *data = (SV *)S_GENSUB_ARG;
1838 2348
1839 frame->data = (void *)data; 2349 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2350 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait; 2351 frame->check = slf_check_rouse_wait;
1842 } 2352 }
… …
1846coro_new_rouse_cb (pTHX) 2356coro_new_rouse_cb (pTHX)
1847{ 2357{
1848 HV *hv = (HV *)SvRV (coro_current); 2358 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv); 2359 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv); 2360 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2361 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1852 2362
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2363 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */ 2364 SvREFCNT_dec (data); /* magicext increases the refcount */
1855 2365
1856 SvREFCNT_dec (coro->rouse_cb); 2366 SvREFCNT_dec (coro->rouse_cb);
… …
1914 frame->prepare = prepare_schedule; 2424 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop; 2425 frame->check = slf_check_nop;
1916} 2426}
1917 2427
1918static void 2428static void
2429slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2430{
2431 struct coro *next = (struct coro *)slf_frame.data;
2432
2433 SvREFCNT_inc_NN (next->hv);
2434 prepare_schedule_to (aTHX_ ta, next);
2435}
2436
2437static void
2438slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2439{
2440 if (!items)
2441 croak ("Coro::schedule_to expects a coroutine argument, caught");
2442
2443 frame->data = (void *)SvSTATE (arg [0]);
2444 frame->prepare = slf_prepare_schedule_to;
2445 frame->check = slf_check_nop;
2446}
2447
2448static void
2449slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2450{
2451 api_ready (aTHX_ SvRV (coro_current));
2452
2453 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2454}
2455
2456static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2457slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{ 2458{
1921 frame->prepare = prepare_cede; 2459 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop; 2460 frame->check = slf_check_nop;
1923} 2461}
… …
1925static void 2463static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2464slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{ 2465{
1928 frame->prepare = prepare_cede_notself; 2466 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop; 2467 frame->check = slf_check_nop;
2468}
2469
2470/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2471static void
2472slf_destroy (pTHX_ struct coro *coro)
2473{
2474 /* this callback is reserved for slf functions needing to do cleanup */
2475 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2476 coro->slf_frame.destroy (aTHX_ coro);
2477
2478 /*
2479 * The on_destroy above most likely is from an SLF call.
2480 * Since by definition the SLF call will not finish when we destroy
2481 * the coro, we will have to force-finish it here, otherwise
2482 * cleanup functions cannot call SLF functions.
2483 */
2484 coro->slf_frame.prepare = 0;
1930} 2485}
1931 2486
1932/* 2487/*
1933 * these not obviously related functions are all rolled into one 2488 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same 2489 * function to increase chances that they all will call transfer with the same
… …
2053 if (PL_op->op_flags & OPf_STACKED) 2608 if (PL_op->op_flags & OPf_STACKED)
2054 { 2609 {
2055 if (items > slf_arga) 2610 if (items > slf_arga)
2056 { 2611 {
2057 slf_arga = items; 2612 slf_arga = items;
2058 free (slf_argv); 2613 Safefree (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *)); 2614 New (0, slf_argv, slf_arga, SV *);
2060 } 2615 }
2061 2616
2062 slf_argc = items; 2617 slf_argc = items;
2063 2618
2064 for (i = 0; i < items; ++i) 2619 for (i = 0; i < items; ++i)
… …
2066 } 2621 }
2067 else 2622 else
2068 slf_argc = 0; 2623 slf_argc = 0;
2069 2624
2070 PL_op->op_ppaddr = pp_slf; 2625 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2626 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2072 2627
2073 PL_op = (OP *)&slf_restore; 2628 PL_op = (OP *)&slf_restore;
2629}
2630
2631/*****************************************************************************/
2632/* dynamic wind */
2633
2634static void
2635on_enterleave_call (pTHX_ SV *cb)
2636{
2637 dSP;
2638
2639 PUSHSTACK;
2640
2641 PUSHMARK (SP);
2642 PUTBACK;
2643 call_sv (cb, G_VOID | G_DISCARD);
2644 SPAGAIN;
2645
2646 POPSTACK;
2647}
2648
2649static SV *
2650coro_avp_pop_and_free (pTHX_ AV **avp)
2651{
2652 AV *av = *avp;
2653 SV *res = av_pop (av);
2654
2655 if (AvFILLp (av) < 0)
2656 {
2657 *avp = 0;
2658 SvREFCNT_dec (av);
2659 }
2660
2661 return res;
2662}
2663
2664static void
2665coro_pop_on_enter (pTHX_ void *coro)
2666{
2667 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2668 SvREFCNT_dec (cb);
2669}
2670
2671static void
2672coro_pop_on_leave (pTHX_ void *coro)
2673{
2674 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2675 on_enterleave_call (aTHX_ sv_2mortal (cb));
2074} 2676}
2075 2677
2076/*****************************************************************************/ 2678/*****************************************************************************/
2077/* PerlIO::cede */ 2679/* PerlIO::cede */
2078 2680
… …
2152/* Coro::Semaphore & Coro::Signal */ 2754/* Coro::Semaphore & Coro::Signal */
2153 2755
2154static SV * 2756static SV *
2155coro_waitarray_new (pTHX_ int count) 2757coro_waitarray_new (pTHX_ int count)
2156{ 2758{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2759 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV (); 2760 AV *av = newAV ();
2159 SV **ary; 2761 SV **ary;
2160 2762
2161 /* unfortunately, building manually saves memory */ 2763 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *); 2764 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary; 2765 AvALLOC (av) = ary;
2766#if PERL_VERSION_ATLEAST (5,10,0)
2164 /*AvARRAY (av) = ary;*/ 2767 AvARRAY (av) = ary;
2768#else
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2769 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2770 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2771 SvPVX ((SV *)av) = (char *)ary;
2772#endif
2166 AvMAX (av) = 1; 2773 AvMAX (av) = 1;
2167 AvFILLp (av) = 0; 2774 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count); 2775 ary [0] = newSViv (count);
2169 2776
2170 return newRV_noinc ((SV *)av); 2777 return newRV_noinc ((SV *)av);
… …
2208 SvREFCNT_dec (cb); 2815 SvREFCNT_dec (cb);
2209 } 2816 }
2210} 2817}
2211 2818
2212static void 2819static void
2213coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2820coro_semaphore_destroy (pTHX_ struct coro *coro)
2214{ 2821{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2822 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2823 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2217} 2824}
2218 2825
… …
2225 /* if we are about to throw, don't actually acquire the lock, just throw */ 2832 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW) 2833 if (CORO_THROW)
2227 return 0; 2834 return 0;
2228 else if (SvIVX (count_sv) > 0) 2835 else if (SvIVX (count_sv) > 0)
2229 { 2836 {
2230 SvSTATE_current->on_destroy = 0; 2837 frame->destroy = 0;
2231 2838
2232 if (acquire) 2839 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2840 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else 2841 else
2235 coro_semaphore_adjust (aTHX_ av, 0); 2842 coro_semaphore_adjust (aTHX_ av, 0);
… …
2278 { 2885 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2886 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280 2887
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2888 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule; 2889 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */ 2890 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2891 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2892 frame->destroy = coro_semaphore_destroy;
2287 } 2893 }
2288} 2894}
2289 2895
2290static void 2896static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2897slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2299{ 2905{
2300 if (items >= 2) 2906 if (items >= 2)
2301 { 2907 {
2302 /* callback form */ 2908 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]); 2909 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 2910 SV *cb_cv = s_get_cv_croak (arg [1]);
2305 2911
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 2912 av_push (av, SvREFCNT_inc_NN (cb_cv));
2307 2913
2308 if (SvIVX (AvARRAY (av)[0]) > 0) 2914 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0); 2915 coro_semaphore_adjust (aTHX_ av, 0);
2310 2916
2311 frame->prepare = prepare_nop; 2917 frame->prepare = prepare_nop;
… …
2335 AvARRAY (av)[0] = AvARRAY (av)[1]; 2941 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb; 2942 AvARRAY (av)[1] = cb;
2337 2943
2338 cb = av_shift (av); 2944 cb = av_shift (av);
2339 2945
2946 if (SvTYPE (cb) == SVt_PVCV)
2947 {
2948 dSP;
2949 PUSHMARK (SP);
2950 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2951 PUTBACK;
2952 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2953 }
2954 else
2955 {
2340 api_ready (aTHX_ cb); 2956 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */ 2957 sv_setiv (cb, 0); /* signal waiter */
2958 }
2959
2342 SvREFCNT_dec (cb); 2960 SvREFCNT_dec (cb);
2343 2961
2344 --count; 2962 --count;
2345 } 2963 }
2346} 2964}
… …
2355static void 2973static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2974slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{ 2975{
2358 AV *av = (AV *)SvRV (arg [0]); 2976 AV *av = (AV *)SvRV (arg [0]);
2359 2977
2978 if (items >= 2)
2979 {
2980 SV *cb_cv = s_get_cv_croak (arg [1]);
2981 av_push (av, SvREFCNT_inc_NN (cb_cv));
2982
2360 if (SvIVX (AvARRAY (av)[0])) 2983 if (SvIVX (AvARRAY (av)[0]))
2984 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2985
2986 frame->prepare = prepare_nop;
2987 frame->check = slf_check_nop;
2988 }
2989 else if (SvIVX (AvARRAY (av)[0]))
2361 { 2990 {
2362 SvIVX (AvARRAY (av)[0]) = 0; 2991 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop; 2992 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop; 2993 frame->check = slf_check_nop;
2365 } 2994 }
2366 else 2995 else
2367 { 2996 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 2997 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2369 2998
2370 av_push (av, waiter); 2999 av_push (av, waiter);
2371 3000
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule; 3002 frame->prepare = prepare_schedule;
… …
2391 3020
2392static void 3021static void
2393coro_aio_callback (pTHX_ CV *cv) 3022coro_aio_callback (pTHX_ CV *cv)
2394{ 3023{
2395 dXSARGS; 3024 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG; 3025 AV *state = (AV *)S_GENSUB_ARG;
2397 SV *coro = av_pop (state); 3026 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state)); 3027 SV *data_sv = newSV (sizeof (struct io_state));
2399 3028
2400 av_extend (state, items); 3029 av_extend (state, items - 1);
2401 3030
2402 sv_upgrade (data_sv, SVt_PV); 3031 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state)); 3032 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv); 3033 SvPOK_only (data_sv);
2405 3034
… …
2515 3144
2516 for (i = 0; i < items; ++i) 3145 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]); 3146 PUSHs (arg [i]);
2518 3147
2519 /* now push the callback closure */ 3148 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3149 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521 3150
2522 /* now call the AIO function - we assume our request is uncancelable */ 3151 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK; 3152 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD); 3153 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 } 3154 }
2526 3155
2527 /* now that the requets is going, we loop toll we have a result */ 3156 /* now that the request is going, we loop till we have a result */
2528 frame->data = (void *)state; 3157 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule; 3158 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req; 3159 frame->check = slf_check_aio_req;
2531} 3160}
2532 3161
… …
2539 3168
2540 XSRETURN_EMPTY; 3169 XSRETURN_EMPTY;
2541} 3170}
2542 3171
2543/*****************************************************************************/ 3172/*****************************************************************************/
3173
3174#if CORO_CLONE
3175# include "clone.c"
3176#endif
3177
3178/*****************************************************************************/
3179
3180static SV *
3181coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3182{
3183 SV *coro_sv;
3184 struct coro *coro;
3185 MAGIC *mg;
3186 HV *hv;
3187 SV *cb;
3188 int i;
3189
3190 if (argc > 0)
3191 {
3192 cb = s_get_cv_croak (argv [0]);
3193
3194 if (!is_coro)
3195 {
3196 if (CvISXSUB (cb))
3197 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3198
3199 if (!CvROOT (cb))
3200 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3201 }
3202 }
3203
3204 Newz (0, coro, 1, struct coro);
3205 coro->args = newAV ();
3206 coro->flags = CF_NEW;
3207
3208 if (coro_first) coro_first->prev = coro;
3209 coro->next = coro_first;
3210 coro_first = coro;
3211
3212 coro->hv = hv = newHV ();
3213 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3214 mg->mg_flags |= MGf_DUP;
3215 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3216
3217 if (argc > 0)
3218 {
3219 av_extend (coro->args, argc + is_coro - 1);
3220
3221 if (is_coro)
3222 {
3223 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3224 cb = (SV *)cv_coro_run;
3225 }
3226
3227 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3228
3229 for (i = 1; i < argc; i++)
3230 av_push (coro->args, newSVsv (argv [i]));
3231 }
3232
3233 return coro_sv;
3234}
2544 3235
2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3236MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2546 3237
2547PROTOTYPES: DISABLE 3238PROTOTYPES: DISABLE
2548 3239
… …
2553 coro_thx = PERL_GET_CONTEXT; 3244 coro_thx = PERL_GET_CONTEXT;
2554# endif 3245# endif
2555#endif 3246#endif
2556 BOOT_PAGESIZE; 3247 BOOT_PAGESIZE;
2557 3248
3249 cctx_current = cctx_new_empty ();
3250
2558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3251 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3252 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2560 3253
2561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3254 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2562 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3255 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2581 3274
2582 { 3275 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3276 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584 3277
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3278 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf, 3279 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2587 newSVpv ("coro_slf", 0), 0);
2588 3280
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3281 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf, 3282 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2591 newSVpv ("coro schedule like function", 0), 0);
2592 } 3283 }
2593 3284
2594 coroapi.ver = CORO_API_VERSION; 3285 coroapi.ver = CORO_API_VERSION;
2595 coroapi.rev = CORO_API_REVISION; 3286 coroapi.rev = CORO_API_REVISION;
2596 3287
… …
2601 coroapi.prepare_nop = prepare_nop; 3292 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule; 3293 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede; 3294 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself; 3295 coroapi.prepare_cede_notself = prepare_cede_notself;
2605 3296
2606 { 3297 time_init (aTHX);
2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2608 3298
2609 if (!svp) croak ("Time::HiRes is required");
2610 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2611
2612 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2613 }
2614
2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3299 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2616} 3300}
2617 3301
2618SV * 3302SV *
2619new (char *klass, ...) 3303new (SV *klass, ...)
2620 ALIAS: 3304 ALIAS:
2621 Coro::new = 1 3305 Coro::new = 1
2622 CODE: 3306 CODE:
2623{ 3307 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2624 struct coro *coro; 3308 OUTPUT:
2625 MAGIC *mg;
2626 HV *hv;
2627 CV *cb;
2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (aTHX_ ST (1));
2633
2634 if (!ix)
2635 {
2636 if (CvISXSUB (cb))
2637 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2638
2639 if (!CvROOT (cb))
2640 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2641 }
2642 }
2643
2644 Newz (0, coro, 1, struct coro);
2645 coro->args = newAV ();
2646 coro->flags = CF_NEW;
2647
2648 if (coro_first) coro_first->prev = coro;
2649 coro->next = coro_first;
2650 coro_first = coro;
2651
2652 coro->hv = hv = newHV ();
2653 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2654 mg->mg_flags |= MGf_DUP;
2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2656
2657 if (items > 1)
2658 {
2659 av_extend (coro->args, items - 1 + ix);
2660
2661 if (ix)
2662 {
2663 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2664 cb = cv_coro_run;
2665 }
2666
2667 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2668
2669 for (i = 2; i < items; i++)
2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
2672}
2673 OUTPUT:
2674 RETVAL 3309 RETVAL
2675 3310
2676void 3311void
2677transfer (...) 3312transfer (...)
2678 PROTOTYPE: $$ 3313 PROTOTYPE: $$
2679 CODE: 3314 CODE:
2680 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3315 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2681 3316
2682bool
2683_destroy (SV *coro_sv)
2684 CODE:
2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2686 OUTPUT:
2687 RETVAL
2688
2689void 3317void
2690_exit (int code) 3318_exit (int code)
2691 PROTOTYPE: $ 3319 PROTOTYPE: $
2692 CODE: 3320 CODE:
2693 _exit (code); 3321 _exit (code);
3322
3323SV *
3324clone (Coro::State coro)
3325 CODE:
3326{
3327#if CORO_CLONE
3328 struct coro *ncoro = coro_clone (aTHX_ coro);
3329 MAGIC *mg;
3330 /* TODO: too much duplication */
3331 ncoro->hv = newHV ();
3332 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3333 mg->mg_flags |= MGf_DUP;
3334 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3335#else
3336 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3337#endif
3338}
3339 OUTPUT:
3340 RETVAL
2694 3341
2695int 3342int
2696cctx_stacksize (int new_stacksize = 0) 3343cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$ 3344 PROTOTYPE: ;$
2698 CODE: 3345 CODE:
… …
2748 eval = 1 3395 eval = 1
2749 CODE: 3396 CODE:
2750{ 3397{
2751 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3398 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2752 { 3399 {
2753 struct coro temp; 3400 struct coro *current = SvSTATE_current;
3401 struct CoroSLF slf_save;
2754 3402
2755 if (!(coro->flags & CF_RUNNING)) 3403 if (current != coro)
2756 { 3404 {
2757 PUTBACK; 3405 PUTBACK;
2758 save_perl (aTHX_ &temp); 3406 save_perl (aTHX_ current);
2759 load_perl (aTHX_ coro); 3407 load_perl (aTHX_ coro);
3408 /* the coro is most likely in an active SLF call.
3409 * while not strictly required (the code we execute is
3410 * not allowed to call any SLF functions), it's cleaner
3411 * to reinitialise the slf_frame and restore it later.
3412 * This might one day allow us to actually do SLF calls
3413 * from code executed here.
3414 */
3415 slf_save = slf_frame;
3416 slf_frame.prepare = 0;
3417 SPAGAIN;
2760 } 3418 }
2761 3419
2762 {
2763 dSP;
2764 ENTER;
2765 SAVETMPS;
2766 PUTBACK;
2767 PUSHSTACK; 3420 PUSHSTACK;
3421
2768 PUSHMARK (SP); 3422 PUSHMARK (SP);
3423 PUTBACK;
2769 3424
2770 if (ix) 3425 if (ix)
2771 eval_sv (coderef, 0); 3426 eval_sv (coderef, 0);
2772 else 3427 else
2773 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3428 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2774 3429
2775 POPSTACK; 3430 POPSTACK;
2776 SPAGAIN; 3431 SPAGAIN;
2777 FREETMPS;
2778 LEAVE;
2779 PUTBACK;
2780 }
2781 3432
2782 if (!(coro->flags & CF_RUNNING)) 3433 if (current != coro)
2783 { 3434 {
3435 PUTBACK;
3436 slf_frame = slf_save;
2784 save_perl (aTHX_ coro); 3437 save_perl (aTHX_ coro);
2785 load_perl (aTHX_ &temp); 3438 load_perl (aTHX_ current);
2786 SPAGAIN; 3439 SPAGAIN;
2787 } 3440 }
2788 } 3441 }
2789} 3442}
2790 3443
… …
2794 ALIAS: 3447 ALIAS:
2795 is_ready = CF_READY 3448 is_ready = CF_READY
2796 is_running = CF_RUNNING 3449 is_running = CF_RUNNING
2797 is_new = CF_NEW 3450 is_new = CF_NEW
2798 is_destroyed = CF_DESTROYED 3451 is_destroyed = CF_DESTROYED
3452 is_suspended = CF_SUSPENDED
2799 CODE: 3453 CODE:
2800 RETVAL = boolSV (coro->flags & ix); 3454 RETVAL = boolSV (coro->flags & ix);
2801 OUTPUT: 3455 OUTPUT:
2802 RETVAL 3456 RETVAL
2803 3457
2804void 3458void
2805throw (Coro::State self, SV *throw = &PL_sv_undef) 3459throw (Coro::State self, SV *exception = &PL_sv_undef)
2806 PROTOTYPE: $;$ 3460 PROTOTYPE: $;$
2807 CODE: 3461 CODE:
2808{ 3462{
2809 struct coro *current = SvSTATE_current; 3463 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except; 3464 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2811 SvREFCNT_dec (*throwp); 3465 SvREFCNT_dec (*exceptionp);
2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3466 SvGETMAGIC (exception);
3467 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2813} 3468}
2814 3469
2815void 3470void
2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3471api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$ 3472 PROTOTYPE: $;$
… …
2819 3474
2820SV * 3475SV *
2821has_cctx (Coro::State coro) 3476has_cctx (Coro::State coro)
2822 PROTOTYPE: $ 3477 PROTOTYPE: $
2823 CODE: 3478 CODE:
2824 RETVAL = boolSV (!!coro->cctx); 3479 /* maybe manage the running flag differently */
3480 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2825 OUTPUT: 3481 OUTPUT:
2826 RETVAL 3482 RETVAL
2827 3483
2828int 3484int
2829is_traced (Coro::State coro) 3485is_traced (Coro::State coro)
… …
2849 3505
2850void 3506void
2851force_cctx () 3507force_cctx ()
2852 PROTOTYPE: 3508 PROTOTYPE:
2853 CODE: 3509 CODE:
2854 SvSTATE_current->cctx->idle_sp = 0; 3510 cctx_current->idle_sp = 0;
2855 3511
2856void 3512void
2857swap_defsv (Coro::State self) 3513swap_defsv (Coro::State self)
2858 PROTOTYPE: $ 3514 PROTOTYPE: $
2859 ALIAS: 3515 ALIAS:
… …
2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3523 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2868 3524
2869 SV *tmp = *src; *src = *dst; *dst = tmp; 3525 SV *tmp = *src; *src = *dst; *dst = tmp;
2870 } 3526 }
2871 3527
3528void
3529cancel (Coro::State self)
3530 CODE:
3531 coro_state_destroy (aTHX_ self);
3532
3533SV *
3534enable_times (int enabled = enable_times)
3535 CODE:
3536{
3537 RETVAL = boolSV (enable_times);
3538
3539 if (enabled != enable_times)
3540 {
3541 enable_times = enabled;
3542
3543 coro_times_update ();
3544 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3545 }
3546}
3547 OUTPUT:
3548 RETVAL
3549
3550void
3551times (Coro::State self)
3552 PPCODE:
3553{
3554 struct coro *current = SvSTATE (coro_current);
3555
3556 if (expect_false (current == self))
3557 {
3558 coro_times_update ();
3559 coro_times_add (SvSTATE (coro_current));
3560 }
3561
3562 EXTEND (SP, 2);
3563 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3564 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3565
3566 if (expect_false (current == self))
3567 coro_times_sub (SvSTATE (coro_current));
3568}
3569
3570void
3571swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3572 CODE:
3573{
3574 struct coro *current = SvSTATE_current;
3575
3576 if (current == coro)
3577 SWAP_SVS (current);
3578
3579 if (!coro->swap_sv)
3580 coro->swap_sv = newAV ();
3581
3582 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3583 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3584
3585 if (current == coro)
3586 SWAP_SVS (current);
3587}
3588
2872 3589
2873MODULE = Coro::State PACKAGE = Coro 3590MODULE = Coro::State PACKAGE = Coro
2874 3591
2875BOOT: 3592BOOT:
2876{ 3593{
2877 int i;
2878
2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3594 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3595 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2882 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 3596 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); 3597 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2884 SvREADONLY_on (coro_current); 3598 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3599 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3600 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3601 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2885 3602
3603 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3604 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3605 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3606 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3607
2886 coro_stash = gv_stashpv ("Coro", TRUE); 3608 coro_stash = gv_stashpv ("Coro", TRUE);
2887 3609
2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3610 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2889 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3611 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2890 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3612 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2891 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3613 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2892 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3614 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2893 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3615 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2894
2895 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2896 coro_ready[i] = newAV ();
2897 3616
2898 { 3617 {
2899 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3618 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2900 3619
2901 coroapi.schedule = api_schedule; 3620 coroapi.schedule = api_schedule;
3621 coroapi.schedule_to = api_schedule_to;
2902 coroapi.cede = api_cede; 3622 coroapi.cede = api_cede;
2903 coroapi.cede_notself = api_cede_notself; 3623 coroapi.cede_notself = api_cede_notself;
2904 coroapi.ready = api_ready; 3624 coroapi.ready = api_ready;
2905 coroapi.is_ready = api_is_ready; 3625 coroapi.is_ready = api_is_ready;
2906 coroapi.nready = coro_nready; 3626 coroapi.nready = coro_nready;
… …
2910 sv_setiv (sv, (IV)&coroapi); 3630 sv_setiv (sv, (IV)&coroapi);
2911 SvREADONLY_on (sv); 3631 SvREADONLY_on (sv);
2912 } 3632 }
2913} 3633}
2914 3634
3635SV *
3636async (...)
3637 PROTOTYPE: &@
3638 CODE:
3639 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3640 api_ready (aTHX_ RETVAL);
3641 OUTPUT:
3642 RETVAL
3643
3644void
3645_destroy (Coro::State coro)
3646 CODE:
3647 /* used by the manager thread */
3648 coro_state_destroy (aTHX_ coro);
3649 coro_call_on_destroy (aTHX_ coro);
3650
3651void
3652terminate (...)
3653 CODE:
3654 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3655
3656void
3657cancel (...)
3658 CODE:
3659 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3660
3661int
3662safe_cancel (Coro::State self, ...)
3663 C_ARGS: aTHX_ self, &ST (1), items - 1
3664
2915void 3665void
2916schedule (...) 3666schedule (...)
2917 CODE: 3667 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3668 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3669
3670void
3671schedule_to (...)
3672 CODE:
3673 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3674
3675void
3676cede_to (...)
3677 CODE:
3678 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2919 3679
2920void 3680void
2921cede (...) 3681cede (...)
2922 CODE: 3682 CODE:
2923 CORO_EXECUTE_SLF_XS (slf_init_cede); 3683 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2937void 3697void
2938_set_readyhook (SV *hook) 3698_set_readyhook (SV *hook)
2939 PROTOTYPE: $ 3699 PROTOTYPE: $
2940 CODE: 3700 CODE:
2941 SvREFCNT_dec (coro_readyhook); 3701 SvREFCNT_dec (coro_readyhook);
3702 SvGETMAGIC (hook);
3703 if (SvOK (hook))
3704 {
2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3705 coro_readyhook = newSVsv (hook);
3706 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3707 }
3708 else
3709 {
3710 coro_readyhook = 0;
3711 CORO_READYHOOK = 0;
3712 }
2943 3713
2944int 3714int
2945prio (Coro::State coro, int newprio = 0) 3715prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$ 3716 PROTOTYPE: $;$
2947 ALIAS: 3717 ALIAS:
… …
2953 if (items > 1) 3723 if (items > 1)
2954 { 3724 {
2955 if (ix) 3725 if (ix)
2956 newprio = coro->prio - newprio; 3726 newprio = coro->prio - newprio;
2957 3727
2958 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3728 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2959 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3729 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2960 3730
2961 coro->prio = newprio; 3731 coro->prio = newprio;
2962 } 3732 }
2963} 3733}
2964 OUTPUT: 3734 OUTPUT:
… …
2978 CODE: 3748 CODE:
2979 RETVAL = coro_nready; 3749 RETVAL = coro_nready;
2980 OUTPUT: 3750 OUTPUT:
2981 RETVAL 3751 RETVAL
2982 3752
2983# for async_pool speedup
2984void 3753void
2985_pool_1 (SV *cb) 3754suspend (Coro::State self)
3755 PROTOTYPE: $
2986 CODE: 3756 CODE:
2987{ 3757 self->flags |= CF_SUSPENDED;
2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2990 AV *defav = GvAV (PL_defgv);
2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2992 AV *invoke_av;
2993 int i, len;
2994 3758
2995 if (!invoke) 3759void
3760resume (Coro::State self)
3761 PROTOTYPE: $
3762 CODE:
3763 self->flags &= ~CF_SUSPENDED;
3764
3765void
3766_pool_handler (...)
3767 CODE:
3768 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3769
3770void
3771async_pool (SV *cv, ...)
3772 PROTOTYPE: &@
3773 PPCODE:
3774{
3775 HV *hv = (HV *)av_pop (av_async_pool);
3776 AV *av = newAV ();
3777 SV *cb = ST (0);
3778 int i;
3779
3780 av_extend (av, items - 2);
3781 for (i = 1; i < items; ++i)
3782 av_push (av, SvREFCNT_inc_NN (ST (i)));
3783
3784 if ((SV *)hv == &PL_sv_undef)
2996 { 3785 {
2997 SV *old = PL_diehook; 3786 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2998 PL_diehook = 0; 3787 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2999 SvREFCNT_dec (old); 3788 SvREFCNT_dec (sv);
3000 croak ("\3async_pool terminate\2\n");
3001 } 3789 }
3002 3790
3003 SvREFCNT_dec (coro->saved_deffh);
3004 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
3005
3006 hv_store (hv, "desc", sizeof ("desc") - 1,
3007 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
3008
3009 invoke_av = (AV *)SvRV (invoke);
3010 len = av_len (invoke_av);
3011
3012 sv_setsv (cb, AvARRAY (invoke_av)[0]);
3013
3014 if (len > 0)
3015 { 3791 {
3016 av_fill (defav, len - 1); 3792 struct coro *coro = SvSTATE_hv (hv);
3017 for (i = 0; i < len; ++i) 3793
3018 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3794 assert (!coro->invoke_cb);
3795 assert (!coro->invoke_av);
3796 coro->invoke_cb = SvREFCNT_inc (cb);
3797 coro->invoke_av = av;
3019 } 3798 }
3020}
3021 3799
3022void 3800 api_ready (aTHX_ (SV *)hv);
3023_pool_2 (SV *cb)
3024 CODE:
3025{
3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
3028 3801
3029 sv_setsv (cb, &PL_sv_undef); 3802 if (GIMME_V != G_VOID)
3030 3803 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3804 else
3032 coro->saved_deffh = 0;
3033
3034 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
3035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3036 {
3037 SV *old = PL_diehook;
3038 PL_diehook = 0;
3039 SvREFCNT_dec (old); 3805 SvREFCNT_dec (hv);
3040 croak ("\3async_pool terminate\2\n");
3041 }
3042
3043 av_clear (GvAV (PL_defgv));
3044 hv_store (hv, "desc", sizeof ("desc") - 1,
3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
3046
3047 coro->prio = 0;
3048
3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
3050 api_trace (aTHX_ coro_current, 0);
3051
3052 av_push (av_async_pool, newSVsv (coro_current));
3053} 3806}
3054 3807
3055SV * 3808SV *
3056rouse_cb () 3809rouse_cb ()
3057 PROTOTYPE: 3810 PROTOTYPE:
… …
3064rouse_wait (...) 3817rouse_wait (...)
3065 PROTOTYPE: ;$ 3818 PROTOTYPE: ;$
3066 PPCODE: 3819 PPCODE:
3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 3820 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3068 3821
3822void
3823on_enter (SV *block)
3824 ALIAS:
3825 on_leave = 1
3826 PROTOTYPE: &
3827 CODE:
3828{
3829 struct coro *coro = SvSTATE_current;
3830 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3831
3832 block = s_get_cv_croak (block);
3833
3834 if (!*avp)
3835 *avp = newAV ();
3836
3837 av_push (*avp, SvREFCNT_inc (block));
3838
3839 if (!ix)
3840 on_enterleave_call (aTHX_ block);
3841
3842 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3843 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3844 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3845}
3846
3069 3847
3070MODULE = Coro::State PACKAGE = PerlIO::cede 3848MODULE = Coro::State PACKAGE = PerlIO::cede
3071 3849
3072BOOT: 3850BOOT:
3073 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3851 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3076MODULE = Coro::State PACKAGE = Coro::Semaphore 3854MODULE = Coro::State PACKAGE = Coro::Semaphore
3077 3855
3078SV * 3856SV *
3079new (SV *klass, SV *count = 0) 3857new (SV *klass, SV *count = 0)
3080 CODE: 3858 CODE:
3859{
3860 int semcnt = 1;
3861
3862 if (count)
3863 {
3864 SvGETMAGIC (count);
3865
3866 if (SvOK (count))
3867 semcnt = SvIV (count);
3868 }
3869
3081 RETVAL = sv_bless ( 3870 RETVAL = sv_bless (
3082 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 3871 coro_waitarray_new (aTHX_ semcnt),
3083 GvSTASH (CvGV (cv)) 3872 GvSTASH (CvGV (cv))
3084 ); 3873 );
3874}
3085 OUTPUT: 3875 OUTPUT:
3086 RETVAL 3876 RETVAL
3087 3877
3088# helper for Coro::Channel 3878# helper for Coro::Channel and others
3089SV * 3879SV *
3090_alloc (int count) 3880_alloc (int count)
3091 CODE: 3881 CODE:
3092 RETVAL = coro_waitarray_new (aTHX_ count); 3882 RETVAL = coro_waitarray_new (aTHX_ count);
3093 OUTPUT: 3883 OUTPUT:
… …
3151 for (i = 1; i <= wcount; ++i) 3941 for (i = 1; i <= wcount; ++i)
3152 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3942 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3153 } 3943 }
3154} 3944}
3155 3945
3946MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3947
3948void
3949_may_delete (SV *sem, int count, int extra_refs)
3950 PPCODE:
3951{
3952 AV *av = (AV *)SvRV (sem);
3953
3954 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3955 && AvFILLp (av) == 0 /* no waiters, just count */
3956 && SvIV (AvARRAY (av)[0]) == count)
3957 XSRETURN_YES;
3958
3959 XSRETURN_NO;
3960}
3961
3156MODULE = Coro::State PACKAGE = Coro::Signal 3962MODULE = Coro::State PACKAGE = Coro::Signal
3157 3963
3158SV * 3964SV *
3159new (SV *klass) 3965new (SV *klass)
3160 CODE: 3966 CODE:
… …
3231 4037
3232void 4038void
3233_register (char *target, char *proto, SV *req) 4039_register (char *target, char *proto, SV *req)
3234 CODE: 4040 CODE:
3235{ 4041{
3236 CV *req_cv = coro_sv_2cv (aTHX_ req); 4042 SV *req_cv = s_get_cv_croak (req);
3237 /* newXSproto doesn't return the CV on 5.8 */ 4043 /* newXSproto doesn't return the CV on 5.8 */
3238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4044 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3239 sv_setpv ((SV *)slf_cv, proto); 4045 sv_setpv ((SV *)slf_cv, proto);
3240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4046 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3241} 4047}
3242 4048
4049MODULE = Coro::State PACKAGE = Coro::Select
4050
4051void
4052patch_pp_sselect ()
4053 CODE:
4054 if (!coro_old_pp_sselect)
4055 {
4056 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4057 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4058 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4059 }
4060
4061void
4062unpatch_pp_sselect ()
4063 CODE:
4064 if (coro_old_pp_sselect)
4065 {
4066 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4067 coro_old_pp_sselect = 0;
4068 }
4069

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines