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Comparing Coro/Coro/State.xs (file contents):
Revision 1.295 by root, Tue Nov 18 10:35:01 2008 UTC vs.
Revision 1.385 by root, Sat Feb 19 05:42:46 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
21
22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
16 25
17#ifdef WIN32 26#ifdef WIN32
18# undef setjmp 27# undef setjmp
19# undef longjmp 28# undef longjmp
20# undef _exit 29# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 30# define setjmp _setjmp /* deep magic */
22#else 31#else
23# include <inttypes.h> /* most portable stdint.h */ 32# include <inttypes.h> /* most portable stdint.h */
24#endif 33#endif
25 34
26#ifdef HAVE_MMAP 35#ifdef HAVE_MMAP
… …
51#endif 60#endif
52 61
53/* the maximum number of idle cctx that will be pooled */ 62/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 63static int cctx_max_idle = 4;
55 64
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 65#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 66# undef CORO_STACKGUARD
111#endif 67#endif
112 68
113#ifndef CORO_STACKGUARD 69#ifndef CORO_STACKGUARD
… …
127#else 83#else
128# define dSTACKLEVEL volatile void *stacklevel 84# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 85# define STACKLEVEL ((void *)&stacklevel)
130#endif 86#endif
131 87
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 88#define IN_DESTRUCT PL_dirty
133 89
134#if __GNUC__ >= 3 90#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x) 91# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value)) 92# define expect(expr,value) __builtin_expect ((expr), (value))
137# define INLINE static inline 93# define INLINE static inline
138#else 94#else
139# define attribute(x) 95# define attribute(x)
140# define expect(expr,value) (expr) 96# define expect(expr,value) (expr)
141# define INLINE static 97# define INLINE static
… …
145#define expect_true(expr) expect ((expr) != 0, 1) 101#define expect_true(expr) expect ((expr) != 0, 1)
146 102
147#define NOINLINE attribute ((noinline)) 103#define NOINLINE attribute ((noinline))
148 104
149#include "CoroAPI.h" 105#include "CoroAPI.h"
106#define GCoroAPI (&coroapi) /* very sneaky */
150 107
151#ifdef USE_ITHREADS 108#ifdef USE_ITHREADS
152# if CORO_PTHREAD 109# if CORO_PTHREAD
153static void *coro_thx; 110static void *coro_thx;
154# endif 111# endif
155#endif 112#endif
156 113
114#ifdef __linux
115# include <time.h> /* for timespec */
116# include <syscall.h> /* for SYS_* */
117# ifdef SYS_clock_gettime
118# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
119# define CORO_CLOCK_MONOTONIC 1
120# define CORO_CLOCK_THREAD_CPUTIME_ID 3
121# endif
122#endif
123
157static double (*nvtime)(); /* so why doesn't it take void? */ 124static double (*nvtime)(); /* so why doesn't it take void? */
125static void (*u2time)(pTHX_ UV ret[2]);
158 126
159/* we hijack an hopefully unused CV flag for our purposes */ 127/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000 128#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX); 129static OP *pp_slf (pTHX);
162 130
… …
166static AV *main_mainstack; /* used to differentiate between $main and others */ 134static AV *main_mainstack; /* used to differentiate between $main and others */
167static JMPENV *main_top_env; 135static JMPENV *main_top_env;
168static HV *coro_state_stash, *coro_stash; 136static HV *coro_state_stash, *coro_stash;
169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 137static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
170 138
139static AV *av_destroy; /* destruction queue */
140static SV *sv_manager; /* the manager coro */
141static SV *sv_idle; /* $Coro::idle */
142
171static GV *irsgv; /* $/ */ 143static GV *irsgv; /* $/ */
172static GV *stdoutgv; /* *STDOUT */ 144static GV *stdoutgv; /* *STDOUT */
173static SV *rv_diehook; 145static SV *rv_diehook;
174static SV *rv_warnhook; 146static SV *rv_warnhook;
175static HV *hv_sig; /* %SIG */ 147static HV *hv_sig; /* %SIG */
176 148
177/* async_pool helper stuff */ 149/* async_pool helper stuff */
178static SV *sv_pool_rss; 150static SV *sv_pool_rss;
179static SV *sv_pool_size; 151static SV *sv_pool_size;
152static SV *sv_async_pool_idle; /* description string */
180static AV *av_async_pool; 153static AV *av_async_pool; /* idle pool */
154static SV *sv_Coro; /* class string */
155static CV *cv_pool_handler;
181 156
182/* Coro::AnyEvent */ 157/* Coro::AnyEvent */
183static SV *sv_activity; 158static SV *sv_activity;
159
160/* enable processtime/realtime profiling */
161static char enable_times;
162typedef U32 coro_ts[2];
163static coro_ts time_real, time_cpu;
164static char times_valid;
184 165
185static struct coro_cctx *cctx_first; 166static struct coro_cctx *cctx_first;
186static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle;
187 168
188enum { 169enum {
… …
214 int valgrind_id; 195 int valgrind_id;
215#endif 196#endif
216 unsigned char flags; 197 unsigned char flags;
217} coro_cctx; 198} coro_cctx;
218 199
200coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
219enum { 204enum {
220 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
221 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
222 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
224}; 210};
225 211
226/* the structure where most of the perl state is stored, overlaid on the cxstack */ 212/* the structure where most of the perl state is stored, overlaid on the cxstack */
227typedef struct 213typedef struct
228{ 214{
229 SV *defsv; 215 SV *defsv;
230 AV *defav; 216 AV *defav;
231 SV *errsv; 217 SV *errsv;
232 SV *irsgv; 218 SV *irsgv;
219 HV *hinthv;
233#define VAR(name,type) type name; 220#define VAR(name,type) type name;
234# include "state.h" 221# include "state.h"
235#undef VAR 222#undef VAR
236} perl_slots; 223} perl_slots;
237 224
… …
240/* this is a structure representing a perl-level coroutine */ 227/* this is a structure representing a perl-level coroutine */
241struct coro { 228struct coro {
242 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 230 coro_cctx *cctx;
244 231
232 /* ready queue */
233 struct coro *next_ready;
234
245 /* state data */ 235 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
247 AV *mainstack; 237 AV *mainstack;
248 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
249 239
240 CV *startcv; /* the CV to execute */
250 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
251 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
252 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
253 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro); 245 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
255 246
256 /* statistics */ 247 /* statistics */
257 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
258 249
259 /* coro process data */ 250 /* coro process data */
260 int prio; 251 int prio;
261 SV *throw; /* exception to be thrown */ 252 SV *except; /* exception to be thrown */
253 SV *rouse_cb;
262 254
263 /* async_pool */ 255 /* async_pool */
264 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
265 269
266 /* linked list */ 270 /* linked list */
267 struct coro *next, *prev; 271 struct coro *next, *prev;
268}; 272};
269 273
… …
272 276
273/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */ 279/* the mainr easonw e don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
278 281
279/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
280 283
281#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
287 290
288/* for Coro.pm */ 291/* for Coro.pm */
289static SV *coro_current; 292static SV *coro_current;
290static SV *coro_readyhook; 293static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run, *cv_coro_terminate;
292static struct coro *coro_first; 296static struct coro *coro_first;
293#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
298
299/** Coro::Select ************************************************************/
300
301static OP *(*coro_old_pp_sselect) (pTHX);
302static SV *coro_select_select;
303
304/* horrible hack, but if it works... */
305static OP *
306coro_pp_sselect (pTHX)
307{
308 dSP;
309 PUSHMARK (SP - 4); /* fake argument list */
310 XPUSHs (coro_select_select);
311 PUTBACK;
312
313 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
314 PL_op->op_flags |= OPf_STACKED;
315 PL_op->op_private = 0;
316 return PL_ppaddr [OP_ENTERSUB](aTHX);
317}
294 318
295/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
296 320
297static SV * 321static SV *
298coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
322 get_hv (name, create); 346 get_hv (name, create);
323#endif 347#endif
324 return get_hv (name, create); 348 return get_hv (name, create);
325} 349}
326 350
351INLINE void
352coro_times_update ()
353{
354#ifdef coro_clock_gettime
355 struct timespec ts;
356
357 ts.tv_sec = ts.tv_nsec = 0;
358 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
359 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
360
361 ts.tv_sec = ts.tv_nsec = 0;
362 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
363 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
364#else
365 dTHX;
366 UV tv[2];
367
368 u2time (aTHX_ tv);
369 time_real [0] = tv [0];
370 time_real [1] = tv [1] * 1000;
371#endif
372}
373
374INLINE void
375coro_times_add (struct coro *c)
376{
377 c->t_real [1] += time_real [1];
378 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
379 c->t_real [0] += time_real [0];
380
381 c->t_cpu [1] += time_cpu [1];
382 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
383 c->t_cpu [0] += time_cpu [0];
384}
385
386INLINE void
387coro_times_sub (struct coro *c)
388{
389 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
390 c->t_real [1] -= time_real [1];
391 c->t_real [0] -= time_real [0];
392
393 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
394 c->t_cpu [1] -= time_cpu [1];
395 c->t_cpu [0] -= time_cpu [0];
396}
397
398/*****************************************************************************/
399/* magic glue */
400
401#define CORO_MAGIC_type_cv 26
402#define CORO_MAGIC_type_state PERL_MAGIC_ext
403
404#define CORO_MAGIC_NN(sv, type) \
405 (expect_true (SvMAGIC (sv)->mg_type == type) \
406 ? SvMAGIC (sv) \
407 : mg_find (sv, type))
408
409#define CORO_MAGIC(sv, type) \
410 (expect_true (SvMAGIC (sv)) \
411 ? CORO_MAGIC_NN (sv, type) \
412 : 0)
413
414#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
415#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
416
417INLINE struct coro *
418SvSTATE_ (pTHX_ SV *coro)
419{
420 HV *stash;
421 MAGIC *mg;
422
423 if (SvROK (coro))
424 coro = SvRV (coro);
425
426 if (expect_false (SvTYPE (coro) != SVt_PVHV))
427 croak ("Coro::State object required");
428
429 stash = SvSTASH (coro);
430 if (expect_false (stash != coro_stash && stash != coro_state_stash))
431 {
432 /* very slow, but rare, check */
433 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
434 croak ("Coro::State object required");
435 }
436
437 mg = CORO_MAGIC_state (coro);
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
442
443/* faster than SvSTATE, but expects a coroutine hv */
444#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
445#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
446
447/*****************************************************************************/
448/* padlist management and caching */
449
327static AV * 450static AV *
328coro_clone_padlist (pTHX_ CV *cv) 451coro_derive_padlist (pTHX_ CV *cv)
329{ 452{
330 AV *padlist = CvPADLIST (cv); 453 AV *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 454 AV *newpadlist, *newpad;
332 455
333 newpadlist = newAV (); 456 newpadlist = newAV ();
… …
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 461 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 462#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 463 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist); 464 --AvFILLp (padlist);
342 465
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 466 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
344 av_store (newpadlist, 1, (SV *)newpad); 467 av_store (newpadlist, 1, (SV *)newpad);
345 468
346 return newpadlist; 469 return newpadlist;
347} 470}
348 471
349static void 472static void
350free_padlist (pTHX_ AV *padlist) 473free_padlist (pTHX_ AV *padlist)
351{ 474{
352 /* may be during global destruction */ 475 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 476 if (!IN_DESTRUCT)
354 { 477 {
355 I32 i = AvFILLp (padlist); 478 I32 i = AvFILLp (padlist);
356 while (i >= 0) 479
480 while (i > 0) /* special-case index 0 */
357 { 481 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 482 /* we try to be extra-careful here */
359 if (svp) 483 AV *av = (AV *)AvARRAY (padlist)[i--];
360 { 484 I32 j = AvFILLp (av);
361 SV *sv; 485
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 486 while (j >= 0)
487 SvREFCNT_dec (AvARRAY (av)[j--]);
488
489 AvFILLp (av) = -1;
363 SvREFCNT_dec (sv); 490 SvREFCNT_dec (av);
364
365 SvREFCNT_dec (*svp);
366 }
367 } 491 }
368 492
493 SvREFCNT_dec (AvARRAY (padlist)[0]);
494
495 AvFILLp (padlist) = -1;
369 SvREFCNT_dec ((SV*)padlist); 496 SvREFCNT_dec ((SV*)padlist);
370 } 497 }
371} 498}
372 499
373static int 500static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 501coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 502{
376 AV *padlist; 503 AV *padlist;
377 AV *av = (AV *)mg->mg_obj; 504 AV *av = (AV *)mg->mg_obj;
505
506 /* perl manages to free our internal AV and _then_ call us */
507 if (IN_DESTRUCT)
508 return 0;
378 509
379 /* casting is fun. */ 510 /* casting is fun. */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 511 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
381 free_padlist (aTHX_ padlist); 512 free_padlist (aTHX_ padlist);
382 513
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 514 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 515
385 return 0; 516 return 0;
386} 517}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 518
391static MGVTBL coro_cv_vtbl = { 519static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 520 0, 0, 0, 0,
393 coro_cv_free 521 coro_cv_free
394}; 522};
395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438 523
439/* the next two functions merely cache the padlists */ 524/* the next two functions merely cache the padlists */
440static void 525static void
441get_padlist (pTHX_ CV *cv) 526get_padlist (pTHX_ CV *cv)
442{ 527{
… …
448 else 533 else
449 { 534 {
450#if CORO_PREFER_PERL_FUNCTIONS 535#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 536 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 537 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 538 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 539 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 540 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 541 SvREFCNT_dec (cp);
457#else 542#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 543 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 544#endif
460 } 545 }
461} 546}
462 547
463static void 548static void
… …
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 555 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 556
472 av = (AV *)mg->mg_obj; 557 av = (AV *)mg->mg_obj;
473 558
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 559 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 560 av_extend (av, AvFILLp (av) + 1);
476 561
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 562 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 563}
479 564
480/** load & save, init *******************************************************/ 565/** load & save, init *******************************************************/
566
567/* swap sv heads, at least logically */
568static void
569swap_svs (pTHX_ Coro__State c)
570{
571 int i;
572
573 for (i = 0; i <= AvFILLp (c->swap_sv); )
574 {
575 SV *a = AvARRAY (c->swap_sv)[i++];
576 SV *b = AvARRAY (c->swap_sv)[i++];
577
578 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
579 SV tmp;
580
581 /* swap sv_any */
582 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
583
584 /* swap sv_flags */
585 SvFLAGS (&tmp) = SvFLAGS (a);
586 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
587 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
588
589#if PERL_VERSION_ATLEAST (5,10,0)
590 /* perl 5.10 complicates this _quite_ a bit, but it also is
591 * much faster, so no quarrels here. alternatively, we could
592 * sv_upgrade to avoid this.
593 */
594 {
595 /* swap sv_u */
596 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
597
598 /* if SvANY points to the head, we need to adjust the pointers,
599 * as the pointer for a still points to b, and maybe vice versa.
600 */
601 #define svany_in_head(type) \
602 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
603
604 if (svany_in_head (SvTYPE (a)))
605 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
606
607 if (svany_in_head (SvTYPE (b)))
608 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
609 }
610#endif
611 }
612}
613
614#define SWAP_SVS(coro) \
615 if (expect_false ((coro)->swap_sv)) \
616 swap_svs (aTHX_ (coro))
617
618static void
619on_enterleave_call (pTHX_ SV *cb);
481 620
482static void 621static void
483load_perl (pTHX_ Coro__State c) 622load_perl (pTHX_ Coro__State c)
484{ 623{
485 perl_slots *slot = c->slot; 624 perl_slots *slot = c->slot;
486 c->slot = 0; 625 c->slot = 0;
487 626
488 PL_mainstack = c->mainstack; 627 PL_mainstack = c->mainstack;
489 628
490 GvSV (PL_defgv) = slot->defsv; 629 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav; 630 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv; 631 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv; 632 GvSV (irsgv) = slot->irsgv;
633 GvHV (PL_hintgv) = slot->hinthv;
494 634
495 #define VAR(name,type) PL_ ## name = slot->name; 635 #define VAR(name,type) PL_ ## name = slot->name;
496 # include "state.h" 636 # include "state.h"
497 #undef VAR 637 #undef VAR
498 638
… …
511 651
512 PUTBACK; 652 PUTBACK;
513 } 653 }
514 654
515 slf_frame = c->slf_frame; 655 slf_frame = c->slf_frame;
516 coro_throw = c->throw; 656 CORO_THROW = c->except;
657
658 if (expect_false (enable_times))
659 {
660 if (expect_false (!times_valid))
661 coro_times_update ();
662
663 coro_times_sub (c);
664 }
665
666 if (expect_false (c->on_enter))
667 {
668 int i;
669
670 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
671 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
672 }
673
674 SWAP_SVS (c);
517} 675}
518 676
519static void 677static void
520save_perl (pTHX_ Coro__State c) 678save_perl (pTHX_ Coro__State c)
521{ 679{
522 c->throw = coro_throw; 680 SWAP_SVS (c);
681
682 if (expect_false (c->on_leave))
683 {
684 int i;
685
686 for (i = AvFILLp (c->on_leave); i >= 0; --i)
687 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
688 }
689
690 times_valid = 0;
691
692 if (expect_false (enable_times))
693 {
694 coro_times_update (); times_valid = 1;
695 coro_times_add (c);
696 }
697
698 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 699 c->slf_frame = slf_frame;
524 700
525 { 701 {
526 dSP; 702 dSP;
527 I32 cxix = cxstack_ix; 703 I32 cxix = cxstack_ix;
… …
539 { 715 {
540 while (expect_true (cxix >= 0)) 716 while (expect_true (cxix >= 0))
541 { 717 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 718 PERL_CONTEXT *cx = &ccstk[cxix--];
543 719
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 720 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 721 {
546 CV *cv = cx->blk_sub.cv; 722 CV *cv = cx->blk_sub.cv;
547 723
548 if (expect_true (CvDEPTH (cv))) 724 if (expect_true (CvDEPTH (cv)))
549 { 725 {
… …
573 /* we manually unroll here, as usually 2 slots is enough */ 749 /* we manually unroll here, as usually 2 slots is enough */
574 if (SLOT_COUNT >= 1) CXINC; 750 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC; 751 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC; 752 if (SLOT_COUNT >= 3) CXINC;
577 { 753 {
578 int i; 754 unsigned int i;
579 for (i = 3; i < SLOT_COUNT; ++i) 755 for (i = 3; i < SLOT_COUNT; ++i)
580 CXINC; 756 CXINC;
581 } 757 }
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 758 cxstack_ix -= SLOT_COUNT; /* undo allocation */
583 759
584 c->mainstack = PL_mainstack; 760 c->mainstack = PL_mainstack;
585 761
586 { 762 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 763 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 764
589 slot->defav = GvAV (PL_defgv); 765 slot->defav = GvAV (PL_defgv);
590 slot->defsv = DEFSV; 766 slot->defsv = DEFSV;
591 slot->errsv = ERRSV; 767 slot->errsv = ERRSV;
592 slot->irsgv = GvSV (irsgv); 768 slot->irsgv = GvSV (irsgv);
769 slot->hinthv = GvHV (PL_hintgv);
593 770
594 #define VAR(name,type) slot->name = PL_ ## name; 771 #define VAR(name,type) slot->name = PL_ ## name;
595 # include "state.h" 772 # include "state.h"
596 #undef VAR 773 #undef VAR
597 } 774 }
… …
602 * of perl.c:init_stacks, except that it uses less memory 779 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 780 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 781 * not usually need a lot of stackspace.
605 */ 782 */
606#if CORO_PREFER_PERL_FUNCTIONS 783#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 784# define coro_init_stacks(thx) init_stacks ()
608#else 785#else
609static void 786static void
610coro_init_stacks (pTHX) 787coro_init_stacks (pTHX)
611{ 788{
612 PL_curstackinfo = new_stackinfo(32, 8); 789 PL_curstackinfo = new_stackinfo(32, 8);
… …
675#if !PERL_VERSION_ATLEAST (5,10,0) 852#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 853 Safefree (PL_retstack);
677#endif 854#endif
678} 855}
679 856
857#define CORO_RSS \
858 rss += sizeof (SYM (curstackinfo)); \
859 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
860 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
861 rss += SYM (tmps_max) * sizeof (SV *); \
862 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
863 rss += SYM (scopestack_max) * sizeof (I32); \
864 rss += SYM (savestack_max) * sizeof (ANY);
865
680static size_t 866static size_t
681coro_rss (pTHX_ struct coro *coro) 867coro_rss (pTHX_ struct coro *coro)
682{ 868{
683 size_t rss = sizeof (*coro); 869 size_t rss = sizeof (*coro);
684 870
685 if (coro->mainstack) 871 if (coro->mainstack)
686 { 872 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 873 if (coro->flags & CF_RUNNING)
691 { 874 {
692 slot = &tmp_slot; 875 #define SYM(sym) PL_ ## sym
693 876 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 877 #undef SYM
697 } 878 }
698 else 879 else
699 slot = coro->slot;
700
701 if (slot)
702 { 880 {
703 rss += sizeof (slot->curstackinfo); 881 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 882 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 883 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 884 }
715 } 885 }
716 886
717 return rss; 887 return rss;
718} 888}
… …
731#endif 901#endif
732 902
733/* 903/*
734 * This overrides the default magic get method of %SIG elements. 904 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 905 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 906 * and instead of trying to save and restore the hash elements, we just provide
737 * readback here. 907 * readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 908 */
742static int 909static int
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 910coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 911{
745 const char *s = MgPV_nolen_const (mg); 912 const char *s = MgPV_nolen_const (mg);
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 965 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 966
800 if (svp) 967 if (svp)
801 { 968 {
802 SV *old = *svp; 969 SV *old = *svp;
803 *svp = newSVsv (sv); 970 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 971 SvREFCNT_dec (old);
805 return 0; 972 return 0;
806 } 973 }
807 } 974 }
808 975
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 987slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 988{
822 return 0; 989 return 0;
823} 990}
824 991
825static UNOP coro_setup_op; 992static int
993slf_check_repeat (pTHX_ struct CoroSLF *frame)
994{
995 return 1;
996}
997
998static UNOP init_perl_op;
826 999
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1000static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1001init_perl (pTHX_ struct coro *coro)
829{ 1002{
830 /* 1003 /*
831 * emulate part of the perl startup here. 1004 * emulate part of the perl startup here.
832 */ 1005 */
833 coro_init_stacks (aTHX); 1006 coro_init_stacks (aTHX);
834 1007
835 PL_runops = RUNOPS_DEFAULT; 1008 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1009 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1010 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1011 PL_comppad = 0;
1012 PL_comppad_name = 0;
1013 PL_comppad_name_fill = 0;
1014 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1015 PL_curpm = 0;
840 PL_curpad = 0; 1016 PL_curpad = 0;
841 PL_localizing = 0; 1017 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1018 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1019#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1020 PL_parser = 0;
846#endif 1021#endif
1022 PL_hints = 0;
847 1023
848 /* recreate the die/warn hooks */ 1024 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1025 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1026 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 1027
852 GvSV (PL_defgv) = newSV (0); 1028 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1029 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1030 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1031 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1032 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1033 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1034 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1035
859 { 1036 {
860 dSP; 1037 dSP;
861 UNOP myop; 1038 UNOP myop;
862 1039
863 Zero (&myop, 1, UNOP); 1040 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1041 myop.op_next = Nullop;
1042 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1043 myop.op_flags = OPf_WANT_VOID;
866 1044
867 PUSHMARK (SP); 1045 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1046 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1047 PUTBACK;
870 PL_op = (OP *)&myop; 1048 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1049 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1050 }
874 1051
875 /* this newly created coroutine might be run on an existing cctx which most 1052 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1053 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1054 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1055 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1056 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880 1057
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1058 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1059 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1060 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1061 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1062 /* no flags etc. required, as an init function won't be called */
886 1063
887 PL_op = (OP *)&coro_setup_op; 1064 PL_op = (OP *)&init_perl_op;
888 1065
889 /* copy throw, in case it was set before coro_setup */ 1066 /* copy throw, in case it was set before init_perl */
890 coro_throw = coro->throw; 1067 CORO_THROW = coro->except;
891}
892 1068
1069 SWAP_SVS (coro);
1070
1071 if (expect_false (enable_times))
1072 {
1073 coro_times_update ();
1074 coro_times_sub (coro);
1075 }
1076}
1077
893static void 1078static void
894coro_destruct (pTHX_ struct coro *coro) 1079coro_unwind_stacks (pTHX)
895{ 1080{
896 if (!IN_DESTRUCT) 1081 if (!IN_DESTRUCT)
897 { 1082 {
898 /* restore all saved variables and stuff */ 1083 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1084 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1092 POPSTACK_TO (PL_mainstack);
908 1093
909 /* unwind main stack */ 1094 /* unwind main stack */
910 dounwind (-1); 1095 dounwind (-1);
911 } 1096 }
1097}
912 1098
913 SvREFCNT_dec (GvSV (PL_defgv)); 1099static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1100destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1101{
916 SvREFCNT_dec (PL_defoutgv); 1102 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1103
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1104 {
1105 struct coro *current = SvSTATE_current;
1106
1107 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1108
1109 save_perl (aTHX_ current);
1110 load_perl (aTHX_ coro);
1111
1112 coro_unwind_stacks (aTHX);
1113 coro_destruct_stacks (aTHX);
1114
1115 /* restore swapped sv's */
1116 SWAP_SVS (coro);
1117
1118 // now save some sv's to be free'd later
1119 svf [0] = GvSV (PL_defgv);
1120 svf [1] = (SV *)GvAV (PL_defgv);
1121 svf [2] = GvSV (PL_errgv);
1122 svf [3] = (SV *)PL_defoutgv;
1123 svf [4] = PL_rs;
1124 svf [5] = GvSV (irsgv);
1125 svf [6] = (SV *)GvHV (PL_hintgv);
1126 svf [7] = PL_diehook;
1127 svf [8] = PL_warnhook;
1128 assert (9 == sizeof (svf) / sizeof (*svf));
1129
1130 load_perl (aTHX_ current);
1131 }
1132
1133 {
1134 unsigned int i;
1135
1136 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1137 SvREFCNT_dec (svf [i]);
1138
923 SvREFCNT_dec (coro->saved_deffh); 1139 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro_throw); 1140 SvREFCNT_dec (coro->rouse_cb);
925 1141 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1142 SvREFCNT_dec (coro->invoke_av);
1143 }
927} 1144}
928 1145
929INLINE void 1146INLINE void
930free_coro_mortal (pTHX) 1147free_coro_mortal (pTHX)
931{ 1148{
… …
939static int 1156static int
940runops_trace (pTHX) 1157runops_trace (pTHX)
941{ 1158{
942 COP *oldcop = 0; 1159 COP *oldcop = 0;
943 int oldcxix = -2; 1160 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1161
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1162 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1163 {
949 PERL_ASYNC_CHECK (); 1164 PERL_ASYNC_CHECK ();
950 1165
951 if (cctx->flags & CC_TRACE_ALL) 1166 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1167 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1168 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1169 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1170 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1171 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1172 AV *av = newAV (); /* return values */
958 SV **cb; 1173 SV **cb;
… …
995 1210
996 if (PL_curcop != &PL_compiling) 1211 if (PL_curcop != &PL_compiling)
997 { 1212 {
998 SV **cb; 1213 SV **cb;
999 1214
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1215 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1216 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1217 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1218
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1219 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1220 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1221 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1222 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1223 SV *fullname = sv_2mortal (newSV (0));
1010 1224
1011 if (isGV (gv)) 1225 if (isGV (gv))
… …
1016 SAVETMPS; 1230 SAVETMPS;
1017 EXTEND (SP, 3); 1231 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1232 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1233 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1234 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1235 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1236 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1237 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1238 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1239 SPAGAIN;
1026 FREETMPS; 1240 FREETMPS;
… …
1029 } 1243 }
1030 1244
1031 oldcxix = cxstack_ix; 1245 oldcxix = cxstack_ix;
1032 } 1246 }
1033 1247
1034 if (cctx->flags & CC_TRACE_LINE) 1248 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1249 {
1036 dSP; 1250 dSP;
1037 1251
1038 PL_runops = RUNOPS_DEFAULT; 1252 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1253 ENTER;
… …
1058 1272
1059 TAINT_NOT; 1273 TAINT_NOT;
1060 return 0; 1274 return 0;
1061} 1275}
1062 1276
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1277static struct CoroSLF cctx_ssl_frame;
1065 1278
1066static void 1279static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1280slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1281{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1282 ta->prev = 0;
1071} 1283}
1072 1284
1073static int 1285static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1286slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1287{
… …
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1290 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1291}
1080 1292
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1293/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1294static void NOINLINE
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1295cctx_prepare (pTHX)
1084{ 1296{
1085 PL_top_env = &PL_start_env; 1297 PL_top_env = &PL_start_env;
1086 1298
1087 if (cctx->flags & CC_TRACE) 1299 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1300 PL_runops = runops_trace;
1089 1301
1090 /* we already must be executing an SLF op, there is no other valid way 1302 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1303 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1304 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1305 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1306
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1307 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1308 cctx_ssl_frame = slf_frame;
1098 1309
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1310 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1311 slf_frame.check = slf_check_set_stacklevel;
1101} 1312}
… …
1124 /* normally we would need to skip the entersub here */ 1335 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1336 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1337 /* PL_nop = PL_nop->op_next */
1127 1338
1128 /* inject a fake subroutine call to cctx_init */ 1339 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1340 cctx_prepare (aTHX);
1130 1341
1131 /* cctx_run is the alternative tail of transfer() */ 1342 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1343 transfer_tail (aTHX);
1133 1344
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1345 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1346 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1347 perl_run (PL_curinterp);
1348 /*
1349 * Unfortunately, there is no way to get at the return values of the
1350 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1351 * runtime errors here, as this is just a random interpreter, not a thread.
1352 */
1137 1353
1138 /* 1354 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1355 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1356 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1357 * reason for perl_run to return. We try to exit by jumping to the
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1358 * bootstrap-time "top" top_env, as we cannot restore the "main"
1143 * coroutine as Coro has no such concept 1359 * coroutine as Coro has no such concept.
1360 * This actually isn't valid with the pthread backend, but OSes requiring
1361 * that backend are too broken to do it in a standards-compliant way.
1144 */ 1362 */
1145 PL_top_env = main_top_env; 1363 PL_top_env = main_top_env;
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1364 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1365 }
1148} 1366}
… …
1225cctx_destroy (coro_cctx *cctx) 1443cctx_destroy (coro_cctx *cctx)
1226{ 1444{
1227 if (!cctx) 1445 if (!cctx)
1228 return; 1446 return;
1229 1447
1448 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1449
1230 --cctx_count; 1450 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1451 coro_destroy (&cctx->cctx);
1232 1452
1233 /* coro_transfer creates new, empty cctx's */ 1453 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr) 1454 if (cctx->sptr)
… …
1297 /* TODO: throwing up here is considered harmful */ 1517 /* TODO: throwing up here is considered harmful */
1298 1518
1299 if (expect_true (prev != next)) 1519 if (expect_true (prev != next))
1300 { 1520 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1521 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1522 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1523
1304 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED)) 1524 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1525 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1526
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1527#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1528 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1529 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1530#endif
… …
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1536transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1537{
1321 dSTACKLEVEL; 1538 dSTACKLEVEL;
1322 1539
1323 /* sometimes transfer is only called to set idle_sp */ 1540 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1541 if (expect_false (!prev))
1325 { 1542 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1543 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1544 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1545 }
1329 else if (expect_true (prev != next)) 1546 else if (expect_true (prev != next))
1330 { 1547 {
1331 coro_cctx *prev__cctx; 1548 coro_cctx *cctx_prev;
1332 1549
1333 if (expect_false (prev->flags & CF_NEW)) 1550 if (expect_false (prev->flags & CF_NEW))
1334 { 1551 {
1335 /* create a new empty/source context */ 1552 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1553 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1554 prev->flags |= CF_RUNNING;
1339 } 1555 }
1340 1556
1341 prev->flags &= ~CF_RUNNING; 1557 prev->flags &= ~CF_RUNNING;
… …
1347 if (expect_false (next->flags & CF_NEW)) 1563 if (expect_false (next->flags & CF_NEW))
1348 { 1564 {
1349 /* need to start coroutine */ 1565 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1566 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1567 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1568 init_perl (aTHX_ next);
1353 } 1569 }
1354 else 1570 else
1355 load_perl (aTHX_ next); 1571 load_perl (aTHX_ next);
1356 1572
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1573 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1574 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1575 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1576 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1577 && !force_cctx
1364 )) 1578 ))
1365 { 1579 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1580 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1581 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1582
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1583 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1584 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1585 if (expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1586 if (expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1587 next->cctx = cctx_get (aTHX);
1376 1588
1377 cctx_put (prev__cctx); 1589 cctx_put (cctx_current);
1378 } 1590 }
1591 else
1592 prev->cctx = cctx_current;
1379 1593
1380 ++next->usecount; 1594 ++next->usecount;
1381 1595
1382 if (expect_true (!next->cctx)) 1596 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1597 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1598
1385 if (expect_false (prev__cctx != next->cctx)) 1599 next->cctx = 0;
1600
1601 if (expect_false (cctx_prev != cctx_current))
1386 { 1602 {
1387 prev__cctx->top_env = PL_top_env; 1603 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1604 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1605 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1606 }
1391 1607
1392 transfer_tail (aTHX); 1608 transfer_tail (aTHX);
1393 } 1609 }
1394} 1610}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1618coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1619{
1404 if (coro->flags & CF_DESTROYED) 1620 if (coro->flags & CF_DESTROYED)
1405 return 0; 1621 return 0;
1406 1622
1407 if (coro->on_destroy) 1623 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1624 coro->on_destroy (aTHX_ coro);
1409 1625
1410 coro->flags |= CF_DESTROYED; 1626 coro->flags |= CF_DESTROYED;
1411 1627
1412 if (coro->flags & CF_READY) 1628 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1632 --coro_nready;
1417 } 1633 }
1418 else 1634 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1635 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1636
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1637 if (coro->mainstack
1422 { 1638 && coro->mainstack != main_mainstack
1423 struct coro temp; 1639 && coro->slot
1424 1640 && !PL_dirty)
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1641 destroy_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439 1642
1440 if (coro->next) coro->next->prev = coro->prev; 1643 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1644 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1645 if (coro == coro_first) coro_first = coro->next;
1646
1647 cctx_destroy (coro->cctx);
1648 SvREFCNT_dec (coro->startcv);
1649 SvREFCNT_dec (coro->args);
1650 SvREFCNT_dec (coro->swap_sv);
1651 SvREFCNT_dec (CORO_THROW);
1443 1652
1444 return 1; 1653 return 1;
1445} 1654}
1446 1655
1447static int 1656static int
… …
1502/** Coro ********************************************************************/ 1711/** Coro ********************************************************************/
1503 1712
1504INLINE void 1713INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1714coro_enq (pTHX_ struct coro *coro)
1506{ 1715{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1716 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1717
1510INLINE SV * 1718 SvREFCNT_inc_NN (coro->hv);
1719
1720 coro->next_ready = 0;
1721 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1722 ready [1] = coro;
1723}
1724
1725INLINE struct coro *
1511coro_deq (pTHX) 1726coro_deq (pTHX)
1512{ 1727{
1513 int prio; 1728 int prio;
1514 1729
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1730 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1731 {
1517 return av_shift (coro_ready [prio]); 1732 struct coro **ready = coro_ready [prio];
1733
1734 if (ready [0])
1735 {
1736 struct coro *coro = ready [0];
1737 ready [0] = coro->next_ready;
1738 return coro;
1739 }
1740 }
1518 1741
1519 return 0; 1742 return 0;
1743}
1744
1745static void
1746invoke_sv_ready_hook_helper (void)
1747{
1748 dTHX;
1749 dSP;
1750
1751 ENTER;
1752 SAVETMPS;
1753
1754 PUSHMARK (SP);
1755 PUTBACK;
1756 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1757
1758 FREETMPS;
1759 LEAVE;
1520} 1760}
1521 1761
1522static int 1762static int
1523api_ready (pTHX_ SV *coro_sv) 1763api_ready (pTHX_ SV *coro_sv)
1524{ 1764{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1765 struct coro *coro = SvSTATE (coro_sv);
1533 1766
1534 if (coro->flags & CF_READY) 1767 if (coro->flags & CF_READY)
1535 return 0; 1768 return 0;
1536 1769
1537 coro->flags |= CF_READY; 1770 coro->flags |= CF_READY;
1538 1771
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1772 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1773
1545 if (sv_hook) 1774 if (!coro_nready++)
1546 { 1775 if (coroapi.readyhook)
1547 dSP; 1776 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1777
1563 return 1; 1778 return 1;
1564} 1779}
1565 1780
1566static int 1781static int
1567api_is_ready (pTHX_ SV *coro_sv) 1782api_is_ready (pTHX_ SV *coro_sv)
1568{ 1783{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1784 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1785}
1571 1786
1787/* expects to own a reference to next->hv */
1572INLINE void 1788INLINE void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1789prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1790{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1791 SV *prev_sv = SvRV (coro_current);
1792
1614 ta->prev = SvSTATE_hv (prev_sv); 1793 ta->prev = SvSTATE_hv (prev_sv);
1794 ta->next = next;
1795
1615 TRANSFER_CHECK (*ta); 1796 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1797
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1798 SvRV_set (coro_current, (SV *)next->hv);
1619 1799
1620 free_coro_mortal (aTHX); 1800 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1801 coro_mortal = prev_sv;
1622} 1802}
1623 1803
1804static void
1805prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1806{
1807 for (;;)
1808 {
1809 struct coro *next = coro_deq (aTHX);
1810
1811 if (expect_true (next))
1812 {
1813 /* cannot transfer to destroyed coros, skip and look for next */
1814 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1815 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1816 else
1817 {
1818 next->flags &= ~CF_READY;
1819 --coro_nready;
1820
1821 prepare_schedule_to (aTHX_ ta, next);
1822 break;
1823 }
1824 }
1825 else
1826 {
1827 /* nothing to schedule: call the idle handler */
1828 if (SvROK (sv_idle)
1829 && SvOBJECT (SvRV (sv_idle)))
1830 {
1831 if (SvRV (sv_idle) == SvRV (coro_current))
1832 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1833
1834 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1835 api_ready (aTHX_ SvRV (sv_idle));
1836 --coro_nready;
1837 }
1838 else
1839 {
1840 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1841 dSP;
1842
1843 ENTER;
1844 SAVETMPS;
1845
1846 PUSHMARK (SP);
1847 PUTBACK;
1848 call_sv (sv_idle, G_VOID | G_DISCARD);
1849
1850 FREETMPS;
1851 LEAVE;
1852 }
1853 }
1854 }
1855}
1856
1624INLINE void 1857INLINE void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1858prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1859{
1627 api_ready (aTHX_ coro_current); 1860 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1861 prepare_schedule (aTHX_ ta);
… …
1647{ 1880{
1648 struct coro_transfer_args ta; 1881 struct coro_transfer_args ta;
1649 1882
1650 prepare_schedule (aTHX_ &ta); 1883 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1884 TRANSFER (ta, 1);
1885}
1886
1887static void
1888api_schedule_to (pTHX_ SV *coro_sv)
1889{
1890 struct coro_transfer_args ta;
1891 struct coro *next = SvSTATE (coro_sv);
1892
1893 SvREFCNT_inc_NN (coro_sv);
1894 prepare_schedule_to (aTHX_ &ta, next);
1652} 1895}
1653 1896
1654static int 1897static int
1655api_cede (pTHX) 1898api_cede (pTHX)
1656{ 1899{
… …
1685static void 1928static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 1929api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 1930{
1688 struct coro *coro = SvSTATE (coro_sv); 1931 struct coro *coro = SvSTATE (coro_sv);
1689 1932
1933 if (coro->flags & CF_RUNNING)
1934 croak ("cannot enable tracing on a running coroutine, caught");
1935
1690 if (flags & CC_TRACE) 1936 if (flags & CC_TRACE)
1691 { 1937 {
1692 if (!coro->cctx) 1938 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 1939 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 1940 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 1941 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 1942
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1943 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 1944 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1945 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 1946 {
… …
1703 if (coro->flags & CF_RUNNING) 1949 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 1950 PL_runops = RUNOPS_DEFAULT;
1705 else 1951 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 1952 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 1953 }
1954}
1955
1956static void
1957coro_call_on_destroy (pTHX_ struct coro *coro)
1958{
1959 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1960 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1961
1962 if (on_destroyp)
1963 {
1964 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1965
1966 while (AvFILLp (on_destroy) >= 0)
1967 {
1968 dSP; /* don't disturb outer sp */
1969 SV *cb = av_pop (on_destroy);
1970
1971 PUSHMARK (SP);
1972
1973 if (statusp)
1974 {
1975 int i;
1976 AV *status = (AV *)SvRV (*statusp);
1977 EXTEND (SP, AvFILLp (status) + 1);
1978
1979 for (i = 0; i <= AvFILLp (status); ++i)
1980 PUSHs (AvARRAY (status)[i]);
1981 }
1982
1983 PUTBACK;
1984 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1985 }
1986 }
1987}
1988
1989static void
1990slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1991{
1992 int i;
1993 HV *hv = (HV *)SvRV (coro_current);
1994 AV *av = newAV ();
1995
1996 /* items are actually not so common, so optimise for this case */
1997 if (items)
1998 {
1999 av_extend (av, items - 1);
2000
2001 for (i = 0; i < items; ++i)
2002 av_push (av, SvREFCNT_inc_NN (arg [i]));
2003 }
2004
2005 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2006
2007 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2008 api_ready (aTHX_ sv_manager);
2009
2010 frame->prepare = prepare_schedule;
2011 frame->check = slf_check_repeat;
2012
2013 /* as a minor optimisation, we could unwind all stacks here */
2014 /* but that puts extra pressure on pp_slf, and is not worth much */
2015 /*coro_unwind_stacks (aTHX);*/
2016}
2017
2018/*****************************************************************************/
2019/* async pool handler */
2020
2021static int
2022slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2023{
2024 HV *hv = (HV *)SvRV (coro_current);
2025 struct coro *coro = (struct coro *)frame->data;
2026
2027 if (!coro->invoke_cb)
2028 return 1; /* loop till we have invoke */
2029 else
2030 {
2031 hv_store (hv, "desc", sizeof ("desc") - 1,
2032 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2033
2034 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2035
2036 {
2037 dSP;
2038 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2039 PUTBACK;
2040 }
2041
2042 SvREFCNT_dec (GvAV (PL_defgv));
2043 GvAV (PL_defgv) = coro->invoke_av;
2044 coro->invoke_av = 0;
2045
2046 return 0;
2047 }
2048}
2049
2050static void
2051slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2052{
2053 HV *hv = (HV *)SvRV (coro_current);
2054 struct coro *coro = SvSTATE_hv ((SV *)hv);
2055
2056 if (expect_true (coro->saved_deffh))
2057 {
2058 /* subsequent iteration */
2059 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2060 coro->saved_deffh = 0;
2061
2062 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2063 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2064 {
2065 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2066 coro->invoke_av = newAV ();
2067
2068 frame->prepare = prepare_nop;
2069 }
2070 else
2071 {
2072 av_clear (GvAV (PL_defgv));
2073 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2074
2075 coro->prio = 0;
2076
2077 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2078 api_trace (aTHX_ coro_current, 0);
2079
2080 frame->prepare = prepare_schedule;
2081 av_push (av_async_pool, SvREFCNT_inc (hv));
2082 }
2083 }
2084 else
2085 {
2086 /* first iteration, simply fall through */
2087 frame->prepare = prepare_nop;
2088 }
2089
2090 frame->check = slf_check_pool_handler;
2091 frame->data = (void *)coro;
2092}
2093
2094/*****************************************************************************/
2095/* rouse callback */
2096
2097#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2098
2099static void
2100coro_rouse_callback (pTHX_ CV *cv)
2101{
2102 dXSARGS;
2103 SV *data = (SV *)S_GENSUB_ARG;
2104
2105 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2106 {
2107 /* first call, set args */
2108 SV *coro = SvRV (data);
2109 AV *av = newAV ();
2110
2111 SvRV_set (data, (SV *)av);
2112
2113 /* better take a full copy of the arguments */
2114 while (items--)
2115 av_store (av, items, newSVsv (ST (items)));
2116
2117 api_ready (aTHX_ coro);
2118 SvREFCNT_dec (coro);
2119 }
2120
2121 XSRETURN_EMPTY;
2122}
2123
2124static int
2125slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2126{
2127 SV *data = (SV *)frame->data;
2128
2129 if (CORO_THROW)
2130 return 0;
2131
2132 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2133 return 1;
2134
2135 /* now push all results on the stack */
2136 {
2137 dSP;
2138 AV *av = (AV *)SvRV (data);
2139 int i;
2140
2141 EXTEND (SP, AvFILLp (av) + 1);
2142 for (i = 0; i <= AvFILLp (av); ++i)
2143 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2144
2145 /* we have stolen the elements, so set length to zero and free */
2146 AvFILLp (av) = -1;
2147 av_undef (av);
2148
2149 PUTBACK;
2150 }
2151
2152 return 0;
2153}
2154
2155static void
2156slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2157{
2158 SV *cb;
2159
2160 if (items)
2161 cb = arg [0];
2162 else
2163 {
2164 struct coro *coro = SvSTATE_current;
2165
2166 if (!coro->rouse_cb)
2167 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2168
2169 cb = sv_2mortal (coro->rouse_cb);
2170 coro->rouse_cb = 0;
2171 }
2172
2173 if (!SvROK (cb)
2174 || SvTYPE (SvRV (cb)) != SVt_PVCV
2175 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2176 croak ("Coro::rouse_wait called with illegal callback argument,");
2177
2178 {
2179 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2180 SV *data = (SV *)S_GENSUB_ARG;
2181
2182 frame->data = (void *)data;
2183 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2184 frame->check = slf_check_rouse_wait;
2185 }
2186}
2187
2188static SV *
2189coro_new_rouse_cb (pTHX)
2190{
2191 HV *hv = (HV *)SvRV (coro_current);
2192 struct coro *coro = SvSTATE_hv (hv);
2193 SV *data = newRV_inc ((SV *)hv);
2194 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2195
2196 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2197 SvREFCNT_dec (data); /* magicext increases the refcount */
2198
2199 SvREFCNT_dec (coro->rouse_cb);
2200 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2201
2202 return cb;
1708} 2203}
1709 2204
1710/*****************************************************************************/ 2205/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2206/* schedule-like-function opcode (SLF) */
1712 2207
… …
1759static void 2254static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2255slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{ 2256{
1762 frame->prepare = prepare_schedule; 2257 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2258 frame->check = slf_check_nop;
2259}
2260
2261static void
2262slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2263{
2264 struct coro *next = (struct coro *)slf_frame.data;
2265
2266 SvREFCNT_inc_NN (next->hv);
2267 prepare_schedule_to (aTHX_ ta, next);
2268}
2269
2270static void
2271slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2272{
2273 if (!items)
2274 croak ("Coro::schedule_to expects a coroutine argument, caught");
2275
2276 frame->data = (void *)SvSTATE (arg [0]);
2277 frame->prepare = slf_prepare_schedule_to;
2278 frame->check = slf_check_nop;
2279}
2280
2281static void
2282slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 api_ready (aTHX_ SvRV (coro_current));
2285
2286 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1764} 2287}
1765 2288
1766static void 2289static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2290slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2291{
… …
1839 } 2362 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2363 while (slf_frame.check (aTHX_ &slf_frame));
1841 2364
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2365 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2366
2367 /* exception handling */
2368 if (expect_false (CORO_THROW))
2369 {
2370 SV *exception = sv_2mortal (CORO_THROW);
2371
2372 CORO_THROW = 0;
2373 sv_setsv (ERRSV, exception);
2374 croak (0);
2375 }
2376
1844 /* return value handling - mostly like entersub */ 2377 /* return value handling - mostly like entersub */
1845 /* make sure we put something on the stack in scalar context */ 2378 /* make sure we put something on the stack in scalar context */
1846 if (GIMME_V == G_SCALAR) 2379 if (GIMME_V == G_SCALAR)
1847 { 2380 {
1848 dSP; 2381 dSP;
… …
1854 bot [1] = *sp; 2387 bot [1] = *sp;
1855 2388
1856 SP = bot + 1; 2389 SP = bot + 1;
1857 2390
1858 PUTBACK; 2391 PUTBACK;
1859 }
1860
1861 /* exception handling */
1862 if (expect_false (coro_throw))
1863 {
1864 SV *exception = sv_2mortal (coro_throw);
1865
1866 coro_throw = 0;
1867 sv_setsv (ERRSV, exception);
1868 croak (0);
1869 } 2392 }
1870 2393
1871 return NORMAL; 2394 return NORMAL;
1872} 2395}
1873 2396
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2424 if (PL_op->op_flags & OPf_STACKED)
1902 { 2425 {
1903 if (items > slf_arga) 2426 if (items > slf_arga)
1904 { 2427 {
1905 slf_arga = items; 2428 slf_arga = items;
1906 free (slf_argv); 2429 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2430 New (0, slf_argv, slf_arga, SV *);
1908 } 2431 }
1909 2432
1910 slf_argc = items; 2433 slf_argc = items;
1911 2434
1912 for (i = 0; i < items; ++i) 2435 for (i = 0; i < items; ++i)
… …
1914 } 2437 }
1915 else 2438 else
1916 slf_argc = 0; 2439 slf_argc = 0;
1917 2440
1918 PL_op->op_ppaddr = pp_slf; 2441 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2442 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2443
1921 PL_op = (OP *)&slf_restore; 2444 PL_op = (OP *)&slf_restore;
2445}
2446
2447/*****************************************************************************/
2448/* dynamic wind */
2449
2450static void
2451on_enterleave_call (pTHX_ SV *cb)
2452{
2453 dSP;
2454
2455 PUSHSTACK;
2456
2457 PUSHMARK (SP);
2458 PUTBACK;
2459 call_sv (cb, G_VOID | G_DISCARD);
2460 SPAGAIN;
2461
2462 POPSTACK;
2463}
2464
2465static SV *
2466coro_avp_pop_and_free (pTHX_ AV **avp)
2467{
2468 AV *av = *avp;
2469 SV *res = av_pop (av);
2470
2471 if (AvFILLp (av) < 0)
2472 {
2473 *avp = 0;
2474 SvREFCNT_dec (av);
2475 }
2476
2477 return res;
2478}
2479
2480static void
2481coro_pop_on_enter (pTHX_ void *coro)
2482{
2483 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2484 SvREFCNT_dec (cb);
2485}
2486
2487static void
2488coro_pop_on_leave (pTHX_ void *coro)
2489{
2490 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2491 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2492}
1923 2493
1924/*****************************************************************************/ 2494/*****************************************************************************/
1925/* PerlIO::cede */ 2495/* PerlIO::cede */
1926 2496
… …
1995 PerlIOBuf_get_cnt, 2565 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2566 PerlIOBuf_set_ptrcnt,
1997}; 2567};
1998 2568
1999/*****************************************************************************/ 2569/*****************************************************************************/
2570/* Coro::Semaphore & Coro::Signal */
2571
2572static SV *
2573coro_waitarray_new (pTHX_ int count)
2574{
2575 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2576 AV *av = newAV ();
2577 SV **ary;
2578
2579 /* unfortunately, building manually saves memory */
2580 Newx (ary, 2, SV *);
2581 AvALLOC (av) = ary;
2582#if PERL_VERSION_ATLEAST (5,10,0)
2583 AvARRAY (av) = ary;
2584#else
2585 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2586 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2587 SvPVX ((SV *)av) = (char *)ary;
2588#endif
2589 AvMAX (av) = 1;
2590 AvFILLp (av) = 0;
2591 ary [0] = newSViv (count);
2592
2593 return newRV_noinc ((SV *)av);
2594}
2595
2000/* Coro::Semaphore */ 2596/* semaphore */
2001 2597
2002static void 2598static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2599coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{ 2600{
2005 SV *count_sv = AvARRAY (av)[0]; 2601 SV *count_sv = AvARRAY (av)[0];
… …
2017 AvARRAY (av)[0] = AvARRAY (av)[1]; 2613 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv; 2614 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av); 2615 cb = av_shift (av);
2020 2616
2021 if (SvOBJECT (cb)) 2617 if (SvOBJECT (cb))
2618 {
2022 api_ready (aTHX_ cb); 2619 api_ready (aTHX_ cb);
2023 else 2620 --count;
2024 croak ("callbacks not yet supported"); 2621 }
2622 else if (SvTYPE (cb) == SVt_PVCV)
2623 {
2624 dSP;
2625 PUSHMARK (SP);
2626 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2627 PUTBACK;
2628 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2629 }
2025 2630
2026 SvREFCNT_dec (cb); 2631 SvREFCNT_dec (cb);
2027
2028 --count;
2029 } 2632 }
2030} 2633}
2031 2634
2032static void 2635static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2636coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2638 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2639 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037} 2640}
2038 2641
2039static int 2642static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2643slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2041{ 2644{
2042 AV *av = (AV *)frame->data; 2645 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0]; 2646 SV *count_sv = AvARRAY (av)[0];
2044 2647
2045 /* if we are about to throw, don't actually acquire the lock, just throw */ 2648 /* if we are about to throw, don't actually acquire the lock, just throw */
2046 if (coro_throw && 0)//D 2649 if (CORO_THROW)
2047 return 0; 2650 return 0;
2048 else if (SvIVX (count_sv) > 0) 2651 else if (SvIVX (count_sv) > 0)
2049 { 2652 {
2050 SvSTATE_current->on_destroy = 0; 2653 SvSTATE_current->on_destroy = 0;
2654
2655 if (acquire)
2051 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2656 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657 else
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2052 return 0; 2660 return 0;
2053 } 2661 }
2054 else 2662 else
2055 { 2663 {
2056 int i; 2664 int i;
… …
2065 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2673 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2066 return 1; 2674 return 1;
2067 } 2675 }
2068} 2676}
2069 2677
2070static void 2678static int
2679slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2682}
2683
2684static int
2685slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2686{
2687 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2688}
2689
2690static void
2071slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2691slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2072{ 2692{
2073 AV *av = (AV *)SvRV (arg [0]); 2693 AV *av = (AV *)SvRV (arg [0]);
2074 2694
2075 if (SvIVX (AvARRAY (av)[0]) > 0) 2695 if (SvIVX (AvARRAY (av)[0]) > 0)
2076 { 2696 {
… …
2086 2706
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2707 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2708 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2709 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 } 2710 }
2711}
2091 2712
2713static void
2714slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2715{
2716 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 2717 frame->check = slf_check_semaphore_down;
2093
2094} 2718}
2095 2719
2096/*****************************************************************************/ 2720static void
2097/* gensub: simple closure generation utility */ 2721slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2722{
2107 CV *cv = (CV *)newSV (0); 2723 if (items >= 2)
2724 {
2725 /* callback form */
2726 AV *av = (AV *)SvRV (arg [0]);
2727 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 2728
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2729 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 2730
2111 CvANON_on (cv); 2731 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 2732 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2733
2116 return newRV_noinc ((SV *)cv); 2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2740 frame->check = slf_check_semaphore_wait;
2741 }
2742}
2743
2744/* signal */
2745
2746static void
2747coro_signal_wake (pTHX_ AV *av, int count)
2748{
2749 SvIVX (AvARRAY (av)[0]) = 0;
2750
2751 /* now signal count waiters */
2752 while (count > 0 && AvFILLp (av) > 0)
2753 {
2754 SV *cb;
2755
2756 /* swap first two elements so we can shift a waiter */
2757 cb = AvARRAY (av)[0];
2758 AvARRAY (av)[0] = AvARRAY (av)[1];
2759 AvARRAY (av)[1] = cb;
2760
2761 cb = av_shift (av);
2762
2763 if (SvTYPE (cb) == SVt_PVCV)
2764 {
2765 dSP;
2766 PUSHMARK (SP);
2767 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2768 PUTBACK;
2769 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2770 }
2771 else
2772 {
2773 api_ready (aTHX_ cb);
2774 sv_setiv (cb, 0); /* signal waiter */
2775 }
2776
2777 SvREFCNT_dec (cb);
2778
2779 --count;
2780 }
2781}
2782
2783static int
2784slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2785{
2786 /* if we are about to throw, also stop waiting */
2787 return SvROK ((SV *)frame->data) && !CORO_THROW;
2788}
2789
2790static void
2791slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2792{
2793 AV *av = (AV *)SvRV (arg [0]);
2794
2795 if (items >= 2)
2796 {
2797 SV *cb_cv = s_get_cv_croak (arg [1]);
2798 av_push (av, SvREFCNT_inc_NN (cb_cv));
2799
2800 if (SvIVX (AvARRAY (av)[0]))
2801 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2802
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else if (SvIVX (AvARRAY (av)[0]))
2807 {
2808 SvIVX (AvARRAY (av)[0]) = 0;
2809 frame->prepare = prepare_nop;
2810 frame->check = slf_check_nop;
2811 }
2812 else
2813 {
2814 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2815
2816 av_push (av, waiter);
2817
2818 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2819 frame->prepare = prepare_schedule;
2820 frame->check = slf_check_signal_wait;
2821 }
2117} 2822}
2118 2823
2119/*****************************************************************************/ 2824/*****************************************************************************/
2120/* Coro::AIO */ 2825/* Coro::AIO */
2121 2826
… …
2132 2837
2133static void 2838static void
2134coro_aio_callback (pTHX_ CV *cv) 2839coro_aio_callback (pTHX_ CV *cv)
2135{ 2840{
2136 dXSARGS; 2841 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 2842 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 2843 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 2844 SV *data_sv = newSV (sizeof (struct io_state));
2140 2845
2141 av_extend (state, items); 2846 av_extend (state, items - 1);
2142 2847
2143 sv_upgrade (data_sv, SVt_PV); 2848 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 2849 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 2850 SvPOK_only (data_sv);
2146 2851
… …
2171static int 2876static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 2877slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 2878{
2174 AV *state = (AV *)frame->data; 2879 AV *state = (AV *)frame->data;
2175 2880
2881 /* if we are about to throw, return early */
2882 /* this does not cancel the aio request, but at least */
2883 /* it quickly returns */
2884 if (CORO_THROW)
2885 return 0;
2886
2176 /* one element that is an RV? repeat! */ 2887 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 2888 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1; 2889 return 1;
2179 2890
2180 /* restore status */ 2891 /* restore status */
… …
2250 2961
2251 for (i = 0; i < items; ++i) 2962 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 2963 PUSHs (arg [i]);
2253 2964
2254 /* now push the callback closure */ 2965 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 2966 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 2967
2257 /* now call the AIO function - we assume our request is uncancelable */ 2968 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 2969 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 2970 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 2971 }
2261 2972
2262 /* now that the requets is going, we loop toll we have a result */ 2973 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 2974 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 2975 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 2976 frame->check = slf_check_aio_req;
2266} 2977}
2267 2978
… …
2274 2985
2275 XSRETURN_EMPTY; 2986 XSRETURN_EMPTY;
2276} 2987}
2277 2988
2278/*****************************************************************************/ 2989/*****************************************************************************/
2990
2991#if CORO_CLONE
2992# include "clone.c"
2993#endif
2994
2995/*****************************************************************************/
2996
2997static SV *
2998coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2999{
3000 SV *coro_sv;
3001 struct coro *coro;
3002 MAGIC *mg;
3003 HV *hv;
3004 SV *cb;
3005 int i;
3006
3007 if (argc > 0)
3008 {
3009 cb = s_get_cv_croak (argv [0]);
3010
3011 if (!is_coro)
3012 {
3013 if (CvISXSUB (cb))
3014 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3015
3016 if (!CvROOT (cb))
3017 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3018 }
3019 }
3020
3021 Newz (0, coro, 1, struct coro);
3022 coro->args = newAV ();
3023 coro->flags = CF_NEW;
3024
3025 if (coro_first) coro_first->prev = coro;
3026 coro->next = coro_first;
3027 coro_first = coro;
3028
3029 coro->hv = hv = newHV ();
3030 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3031 mg->mg_flags |= MGf_DUP;
3032 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3033
3034 if (argc > 0)
3035 {
3036 av_extend (coro->args, argc + is_coro - 1);
3037
3038 if (is_coro)
3039 {
3040 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3041 cb = (SV *)cv_coro_run;
3042 }
3043
3044 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3045
3046 for (i = 1; i < argc; i++)
3047 av_push (coro->args, newSVsv (argv [i]));
3048 }
3049
3050 return coro_sv;
3051}
2279 3052
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3053MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3054
2282PROTOTYPES: DISABLE 3055PROTOTYPES: DISABLE
2283 3056
… …
2288 coro_thx = PERL_GET_CONTEXT; 3061 coro_thx = PERL_GET_CONTEXT;
2289# endif 3062# endif
2290#endif 3063#endif
2291 BOOT_PAGESIZE; 3064 BOOT_PAGESIZE;
2292 3065
3066 cctx_current = cctx_new_empty ();
3067
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3068 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3069 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3070
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3071 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3072 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2316 3091
2317 { 3092 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3093 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3094
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3095 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3096 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3097
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3098 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3099 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3100 }
2328 3101
2329 coroapi.ver = CORO_API_VERSION; 3102 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3103 coroapi.rev = CORO_API_REVISION;
2331 3104
… …
2343 3116
2344 if (!svp) croak ("Time::HiRes is required"); 3117 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3118 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346 3119
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3120 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3121
3122 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3123 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2348 } 3124 }
2349 3125
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3126 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2351} 3127}
2352 3128
2353SV * 3129SV *
2354new (char *klass, ...) 3130new (SV *klass, ...)
3131 ALIAS:
3132 Coro::new = 1
2355 CODE: 3133 CODE:
2356{ 3134 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3135 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3136 RETVAL
2381 3137
2382void 3138void
2383transfer (...) 3139transfer (...)
2384 PROTOTYPE: $$ 3140 PROTOTYPE: $$
… …
2395void 3151void
2396_exit (int code) 3152_exit (int code)
2397 PROTOTYPE: $ 3153 PROTOTYPE: $
2398 CODE: 3154 CODE:
2399 _exit (code); 3155 _exit (code);
3156
3157SV *
3158clone (Coro::State coro)
3159 CODE:
3160{
3161#if CORO_CLONE
3162 struct coro *ncoro = coro_clone (aTHX_ coro);
3163 MAGIC *mg;
3164 /* TODO: too much duplication */
3165 ncoro->hv = newHV ();
3166 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3167 mg->mg_flags |= MGf_DUP;
3168 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3169#else
3170 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3171#endif
3172}
3173 OUTPUT:
3174 RETVAL
2400 3175
2401int 3176int
2402cctx_stacksize (int new_stacksize = 0) 3177cctx_stacksize (int new_stacksize = 0)
2403 PROTOTYPE: ;$ 3178 PROTOTYPE: ;$
2404 CODE: 3179 CODE:
… …
2454 eval = 1 3229 eval = 1
2455 CODE: 3230 CODE:
2456{ 3231{
2457 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3232 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2458 { 3233 {
2459 struct coro temp; 3234 struct coro *current = SvSTATE_current;
2460 3235
2461 if (!(coro->flags & CF_RUNNING)) 3236 if (current != coro)
2462 { 3237 {
2463 PUTBACK; 3238 PUTBACK;
2464 save_perl (aTHX_ &temp); 3239 save_perl (aTHX_ current);
2465 load_perl (aTHX_ coro); 3240 load_perl (aTHX_ coro);
3241 SPAGAIN;
2466 } 3242 }
2467 3243
2468 {
2469 dSP;
2470 ENTER;
2471 SAVETMPS;
2472 PUTBACK;
2473 PUSHSTACK; 3244 PUSHSTACK;
3245
2474 PUSHMARK (SP); 3246 PUSHMARK (SP);
3247 PUTBACK;
2475 3248
2476 if (ix) 3249 if (ix)
2477 eval_sv (coderef, 0); 3250 eval_sv (coderef, 0);
2478 else 3251 else
2479 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3252 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2480 3253
2481 POPSTACK; 3254 POPSTACK;
2482 SPAGAIN; 3255 SPAGAIN;
2483 FREETMPS;
2484 LEAVE;
2485 PUTBACK;
2486 }
2487 3256
2488 if (!(coro->flags & CF_RUNNING)) 3257 if (current != coro)
2489 { 3258 {
3259 PUTBACK;
2490 save_perl (aTHX_ coro); 3260 save_perl (aTHX_ coro);
2491 load_perl (aTHX_ &temp); 3261 load_perl (aTHX_ current);
2492 SPAGAIN; 3262 SPAGAIN;
2493 } 3263 }
2494 } 3264 }
2495} 3265}
2496 3266
… …
2500 ALIAS: 3270 ALIAS:
2501 is_ready = CF_READY 3271 is_ready = CF_READY
2502 is_running = CF_RUNNING 3272 is_running = CF_RUNNING
2503 is_new = CF_NEW 3273 is_new = CF_NEW
2504 is_destroyed = CF_DESTROYED 3274 is_destroyed = CF_DESTROYED
3275 is_suspended = CF_SUSPENDED
2505 CODE: 3276 CODE:
2506 RETVAL = boolSV (coro->flags & ix); 3277 RETVAL = boolSV (coro->flags & ix);
2507 OUTPUT: 3278 OUTPUT:
2508 RETVAL 3279 RETVAL
2509 3280
2510void 3281void
2511throw (Coro::State self, SV *throw = &PL_sv_undef) 3282throw (Coro::State self, SV *exception = &PL_sv_undef)
2512 PROTOTYPE: $;$ 3283 PROTOTYPE: $;$
2513 CODE: 3284 CODE:
2514{ 3285{
2515 struct coro *current = SvSTATE_current; 3286 struct coro *current = SvSTATE_current;
2516 SV **throwp = self == current ? &coro_throw : &self->throw; 3287 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2517 SvREFCNT_dec (*throwp); 3288 SvREFCNT_dec (*exceptionp);
2518 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3289 SvGETMAGIC (exception);
3290 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2519} 3291}
2520 3292
2521void 3293void
2522api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3294api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2523 PROTOTYPE: $;$ 3295 PROTOTYPE: $;$
… …
2525 3297
2526SV * 3298SV *
2527has_cctx (Coro::State coro) 3299has_cctx (Coro::State coro)
2528 PROTOTYPE: $ 3300 PROTOTYPE: $
2529 CODE: 3301 CODE:
2530 RETVAL = boolSV (!!coro->cctx); 3302 /* maybe manage the running flag differently */
3303 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2531 OUTPUT: 3304 OUTPUT:
2532 RETVAL 3305 RETVAL
2533 3306
2534int 3307int
2535is_traced (Coro::State coro) 3308is_traced (Coro::State coro)
… …
2555 3328
2556void 3329void
2557force_cctx () 3330force_cctx ()
2558 PROTOTYPE: 3331 PROTOTYPE:
2559 CODE: 3332 CODE:
2560 SvSTATE_current->cctx->idle_sp = 0; 3333 cctx_current->idle_sp = 0;
2561 3334
2562void 3335void
2563swap_defsv (Coro::State self) 3336swap_defsv (Coro::State self)
2564 PROTOTYPE: $ 3337 PROTOTYPE: $
2565 ALIAS: 3338 ALIAS:
… …
2573 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3346 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2574 3347
2575 SV *tmp = *src; *src = *dst; *dst = tmp; 3348 SV *tmp = *src; *src = *dst; *dst = tmp;
2576 } 3349 }
2577 3350
3351void
3352cancel (Coro::State self)
3353 CODE:
3354 coro_state_destroy (aTHX_ self);
3355 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3356
3357
3358SV *
3359enable_times (int enabled = enable_times)
3360 CODE:
3361{
3362 RETVAL = boolSV (enable_times);
3363
3364 if (enabled != enable_times)
3365 {
3366 enable_times = enabled;
3367
3368 coro_times_update ();
3369 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3370 }
3371}
3372 OUTPUT:
3373 RETVAL
3374
3375void
3376times (Coro::State self)
3377 PPCODE:
3378{
3379 struct coro *current = SvSTATE (coro_current);
3380
3381 if (expect_false (current == self))
3382 {
3383 coro_times_update ();
3384 coro_times_add (SvSTATE (coro_current));
3385 }
3386
3387 EXTEND (SP, 2);
3388 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3389 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3390
3391 if (expect_false (current == self))
3392 coro_times_sub (SvSTATE (coro_current));
3393}
3394
3395void
3396swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3397 CODE:
3398{
3399 struct coro *current = SvSTATE_current;
3400
3401 if (current == coro)
3402 SWAP_SVS (current);
3403
3404 if (!coro->swap_sv)
3405 coro->swap_sv = newAV ();
3406
3407 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3408 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3409
3410 if (current == coro)
3411 SWAP_SVS (current);
3412}
3413
2578 3414
2579MODULE = Coro::State PACKAGE = Coro 3415MODULE = Coro::State PACKAGE = Coro
2580 3416
2581BOOT: 3417BOOT:
2582{ 3418{
2583 int i;
2584
2585 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2586 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3419 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2587 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3420 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2588 3421 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3422 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2589 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3423 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2590 SvREADONLY_on (coro_current); 3424 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3425 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3426 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3427 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2591 3428
3429 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3430 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3431 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3432 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3433
2592 coro_stash = gv_stashpv ("Coro", TRUE); 3434 coro_stash = gv_stashpv ("Coro", TRUE);
2593 3435
2594 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3436 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2595 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3437 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2596 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3438 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2597 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3439 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2598 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3440 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2599 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3441 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2600
2601 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2602 coro_ready[i] = newAV ();
2603 3442
2604 { 3443 {
2605 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3444 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2606 3445
2607 coroapi.schedule = api_schedule; 3446 coroapi.schedule = api_schedule;
3447 coroapi.schedule_to = api_schedule_to;
2608 coroapi.cede = api_cede; 3448 coroapi.cede = api_cede;
2609 coroapi.cede_notself = api_cede_notself; 3449 coroapi.cede_notself = api_cede_notself;
2610 coroapi.ready = api_ready; 3450 coroapi.ready = api_ready;
2611 coroapi.is_ready = api_is_ready; 3451 coroapi.is_ready = api_is_ready;
2612 coroapi.nready = coro_nready; 3452 coroapi.nready = coro_nready;
2613 coroapi.current = coro_current; 3453 coroapi.current = coro_current;
2614 3454
2615 GCoroAPI = &coroapi; 3455 /*GCoroAPI = &coroapi;*/
2616 sv_setiv (sv, (IV)&coroapi); 3456 sv_setiv (sv, (IV)&coroapi);
2617 SvREADONLY_on (sv); 3457 SvREADONLY_on (sv);
2618 } 3458 }
2619} 3459}
3460
3461SV *
3462async (...)
3463 PROTOTYPE: &@
3464 CODE:
3465 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3466 api_ready (aTHX_ RETVAL);
3467 OUTPUT:
3468 RETVAL
3469
3470void
3471terminate (...)
3472 CODE:
3473 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2620 3474
2621void 3475void
2622schedule (...) 3476schedule (...)
2623 CODE: 3477 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3478 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3479
3480void
3481schedule_to (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3484
3485void
3486cede_to (...)
3487 CODE:
3488 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2625 3489
2626void 3490void
2627cede (...) 3491cede (...)
2628 CODE: 3492 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_cede); 3493 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2643void 3507void
2644_set_readyhook (SV *hook) 3508_set_readyhook (SV *hook)
2645 PROTOTYPE: $ 3509 PROTOTYPE: $
2646 CODE: 3510 CODE:
2647 SvREFCNT_dec (coro_readyhook); 3511 SvREFCNT_dec (coro_readyhook);
3512 SvGETMAGIC (hook);
3513 if (SvOK (hook))
3514 {
2648 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3515 coro_readyhook = newSVsv (hook);
3516 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3517 }
3518 else
3519 {
3520 coro_readyhook = 0;
3521 CORO_READYHOOK = 0;
3522 }
2649 3523
2650int 3524int
2651prio (Coro::State coro, int newprio = 0) 3525prio (Coro::State coro, int newprio = 0)
2652 PROTOTYPE: $;$ 3526 PROTOTYPE: $;$
2653 ALIAS: 3527 ALIAS:
… …
2659 if (items > 1) 3533 if (items > 1)
2660 { 3534 {
2661 if (ix) 3535 if (ix)
2662 newprio = coro->prio - newprio; 3536 newprio = coro->prio - newprio;
2663 3537
2664 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3538 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2665 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3539 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2666 3540
2667 coro->prio = newprio; 3541 coro->prio = newprio;
2668 } 3542 }
2669} 3543}
2670 OUTPUT: 3544 OUTPUT:
… …
2684 CODE: 3558 CODE:
2685 RETVAL = coro_nready; 3559 RETVAL = coro_nready;
2686 OUTPUT: 3560 OUTPUT:
2687 RETVAL 3561 RETVAL
2688 3562
2689# for async_pool speedup
2690void 3563void
2691_pool_1 (SV *cb) 3564suspend (Coro::State self)
3565 PROTOTYPE: $
2692 CODE: 3566 CODE:
2693{ 3567 self->flags |= CF_SUSPENDED;
2694 HV *hv = (HV *)SvRV (coro_current);
2695 struct coro *coro = SvSTATE_hv ((SV *)hv);
2696 AV *defav = GvAV (PL_defgv);
2697 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2698 AV *invoke_av;
2699 int i, len;
2700 3568
2701 if (!invoke) 3569void
3570resume (Coro::State self)
3571 PROTOTYPE: $
3572 CODE:
3573 self->flags &= ~CF_SUSPENDED;
3574
3575void
3576_pool_handler (...)
3577 CODE:
3578 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3579
3580void
3581async_pool (SV *cv, ...)
3582 PROTOTYPE: &@
3583 PPCODE:
3584{
3585 HV *hv = (HV *)av_pop (av_async_pool);
3586 AV *av = newAV ();
3587 SV *cb = ST (0);
3588 int i;
3589
3590 av_extend (av, items - 2);
3591 for (i = 1; i < items; ++i)
3592 av_push (av, SvREFCNT_inc_NN (ST (i)));
3593
3594 if ((SV *)hv == &PL_sv_undef)
2702 { 3595 {
2703 SV *old = PL_diehook; 3596 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2704 PL_diehook = 0; 3597 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2705 SvREFCNT_dec (old); 3598 SvREFCNT_dec (sv);
2706 croak ("\3async_pool terminate\2\n");
2707 } 3599 }
2708 3600
2709 SvREFCNT_dec (coro->saved_deffh);
2710 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2711
2712 hv_store (hv, "desc", sizeof ("desc") - 1,
2713 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2714
2715 invoke_av = (AV *)SvRV (invoke);
2716 len = av_len (invoke_av);
2717
2718 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2719
2720 if (len > 0)
2721 { 3601 {
2722 av_fill (defav, len - 1); 3602 struct coro *coro = SvSTATE_hv (hv);
2723 for (i = 0; i < len; ++i) 3603
2724 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3604 assert (!coro->invoke_cb);
3605 assert (!coro->invoke_av);
3606 coro->invoke_cb = SvREFCNT_inc (cb);
3607 coro->invoke_av = av;
2725 } 3608 }
3609
3610 api_ready (aTHX_ (SV *)hv);
3611
3612 if (GIMME_V != G_VOID)
3613 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3614 else
3615 SvREFCNT_dec (hv);
2726} 3616}
3617
3618SV *
3619rouse_cb ()
3620 PROTOTYPE:
3621 CODE:
3622 RETVAL = coro_new_rouse_cb (aTHX);
3623 OUTPUT:
3624 RETVAL
2727 3625
2728void 3626void
2729_pool_2 (SV *cb) 3627rouse_wait (...)
3628 PROTOTYPE: ;$
3629 PPCODE:
3630 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3631
3632void
3633on_enter (SV *block)
3634 ALIAS:
3635 on_leave = 1
3636 PROTOTYPE: &
2730 CODE: 3637 CODE:
2731{ 3638{
2732 HV *hv = (HV *)SvRV (coro_current);
2733 struct coro *coro = SvSTATE_hv ((SV *)hv); 3639 struct coro *coro = SvSTATE_current;
3640 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2734 3641
2735 sv_setsv (cb, &PL_sv_undef); 3642 block = s_get_cv_croak (block);
2736 3643
2737 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3644 if (!*avp)
2738 coro->saved_deffh = 0; 3645 *avp = newAV ();
2739 3646
2740 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3647 av_push (*avp, SvREFCNT_inc (block));
2741 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2742 {
2743 SV *old = PL_diehook;
2744 PL_diehook = 0;
2745 SvREFCNT_dec (old);
2746 croak ("\3async_pool terminate\2\n");
2747 }
2748 3648
2749 av_clear (GvAV (PL_defgv)); 3649 if (!ix)
2750 hv_store (hv, "desc", sizeof ("desc") - 1, 3650 on_enterleave_call (aTHX_ block);
2751 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2752 3651
2753 coro->prio = 0; 3652 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2754 3653 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2755 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3654 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2756 api_trace (aTHX_ coro_current, 0);
2757
2758 av_push (av_async_pool, newSVsv (coro_current));
2759} 3655}
2760 3656
2761 3657
2762MODULE = Coro::State PACKAGE = PerlIO::cede 3658MODULE = Coro::State PACKAGE = PerlIO::cede
2763 3659
… …
2766 3662
2767 3663
2768MODULE = Coro::State PACKAGE = Coro::Semaphore 3664MODULE = Coro::State PACKAGE = Coro::Semaphore
2769 3665
2770SV * 3666SV *
2771new (SV *klass, SV *count_ = 0) 3667new (SV *klass, SV *count = 0)
2772 CODE: 3668 CODE:
2773{ 3669{
2774 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3670 int semcnt = 1;
2775 AV *av = newAV ();
2776 SV **ary;
2777 3671
2778 /* unfortunately, building manually saves memory */ 3672 if (count)
2779 Newx (ary, 2, SV *); 3673 {
2780 AvALLOC (av) = ary; 3674 SvGETMAGIC (count);
2781 AvARRAY (av) = ary;
2782 AvMAX (av) = 1;
2783 AvFILLp (av) = 0;
2784 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2785 3675
2786 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3676 if (SvOK (count))
3677 semcnt = SvIV (count);
3678 }
3679
3680 RETVAL = sv_bless (
3681 coro_waitarray_new (aTHX_ semcnt),
3682 GvSTASH (CvGV (cv))
3683 );
2787} 3684}
3685 OUTPUT:
3686 RETVAL
3687
3688# helper for Coro::Channel and others
3689SV *
3690_alloc (int count)
3691 CODE:
3692 RETVAL = coro_waitarray_new (aTHX_ count);
2788 OUTPUT: 3693 OUTPUT:
2789 RETVAL 3694 RETVAL
2790 3695
2791SV * 3696SV *
2792count (SV *self) 3697count (SV *self)
… …
2801 adjust = 1 3706 adjust = 1
2802 CODE: 3707 CODE:
2803 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3708 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2804 3709
2805void 3710void
2806down (SV *self) 3711down (...)
2807 CODE: 3712 CODE:
2808 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3713 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3714
3715void
3716wait (...)
3717 CODE:
3718 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2809 3719
2810void 3720void
2811try (SV *self) 3721try (SV *self)
2812 PPCODE: 3722 PPCODE:
2813{ 3723{
… …
2825 XSRETURN_NO; 3735 XSRETURN_NO;
2826} 3736}
2827 3737
2828void 3738void
2829waiters (SV *self) 3739waiters (SV *self)
2830 CODE: 3740 PPCODE:
2831{ 3741{
2832 AV *av = (AV *)SvRV (self); 3742 AV *av = (AV *)SvRV (self);
3743 int wcount = AvFILLp (av) + 1 - 1;
2833 3744
2834 if (GIMME_V == G_SCALAR) 3745 if (GIMME_V == G_SCALAR)
2835 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3746 XPUSHs (sv_2mortal (newSViv (wcount)));
2836 else 3747 else
2837 { 3748 {
2838 int i; 3749 int i;
2839 EXTEND (SP, AvFILLp (av) + 1 - 1); 3750 EXTEND (SP, wcount);
2840 for (i = 1; i <= AvFILLp (av); ++i) 3751 for (i = 1; i <= wcount; ++i)
2841 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3752 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2842 } 3753 }
2843} 3754}
3755
3756MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3757
3758void
3759_may_delete (SV *sem, int count, int extra_refs)
3760 PPCODE:
3761{
3762 AV *av = (AV *)SvRV (sem);
3763
3764 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3765 && AvFILLp (av) == 0 /* no waiters, just count */
3766 && SvIV (AvARRAY (av)[0]) == count)
3767 XSRETURN_YES;
3768
3769 XSRETURN_NO;
3770}
3771
3772MODULE = Coro::State PACKAGE = Coro::Signal
3773
3774SV *
3775new (SV *klass)
3776 CODE:
3777 RETVAL = sv_bless (
3778 coro_waitarray_new (aTHX_ 0),
3779 GvSTASH (CvGV (cv))
3780 );
3781 OUTPUT:
3782 RETVAL
3783
3784void
3785wait (...)
3786 CODE:
3787 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3788
3789void
3790broadcast (SV *self)
3791 CODE:
3792{
3793 AV *av = (AV *)SvRV (self);
3794 coro_signal_wake (aTHX_ av, AvFILLp (av));
3795}
3796
3797void
3798send (SV *self)
3799 CODE:
3800{
3801 AV *av = (AV *)SvRV (self);
3802
3803 if (AvFILLp (av))
3804 coro_signal_wake (aTHX_ av, 1);
3805 else
3806 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3807}
3808
3809IV
3810awaited (SV *self)
3811 CODE:
3812 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3813 OUTPUT:
3814 RETVAL
2844 3815
2845 3816
2846MODULE = Coro::State PACKAGE = Coro::AnyEvent 3817MODULE = Coro::State PACKAGE = Coro::AnyEvent
2847 3818
2848BOOT: 3819BOOT:
… …
2876 3847
2877void 3848void
2878_register (char *target, char *proto, SV *req) 3849_register (char *target, char *proto, SV *req)
2879 CODE: 3850 CODE:
2880{ 3851{
2881 HV *st; 3852 SV *req_cv = s_get_cv_croak (req);
2882 GV *gvp;
2883 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2884 /* newXSproto doesn't return the CV on 5.8 */ 3853 /* newXSproto doesn't return the CV on 5.8 */
2885 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 3854 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2886 sv_setpv ((SV *)slf_cv, proto); 3855 sv_setpv ((SV *)slf_cv, proto);
2887 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3856 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2888} 3857}
2889 3858
3859MODULE = Coro::State PACKAGE = Coro::Select
3860
3861void
3862patch_pp_sselect ()
3863 CODE:
3864 if (!coro_old_pp_sselect)
3865 {
3866 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3867 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3868 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3869 }
3870
3871void
3872unpatch_pp_sselect ()
3873 CODE:
3874 if (coro_old_pp_sselect)
3875 {
3876 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3877 coro_old_pp_sselect = 0;
3878 }
3879

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