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Comparing Coro/Coro/State.xs (file contents):
Revision 1.290 by root, Tue Nov 18 05:51:38 2008 UTC vs.
Revision 1.378 by root, Sat Dec 12 01:30:26 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
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 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
111#endif 64#endif
112 65
113#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
120#endif 73#endif
121 74
122/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 76 * portable way as possible. */
124#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
126#else 80#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
128#endif 83#endif
129 84
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
131 86
132#if __GNUC__ >= 3 87#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
135# define INLINE static inline 90# define INLINE static inline
136#else 91#else
137# define attribute(x) 92# define attribute(x)
138# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
139# define INLINE static 94# define INLINE static
… …
143#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
144 99
145#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
146 101
147#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
148 104
149#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
150# if CORO_PTHREAD 106# if CORO_PTHREAD
151static void *coro_thx; 107static void *coro_thx;
152# endif 108# endif
153#endif 109#endif
154 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
155static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
156 123
157/* we hijack an hopefully unused CV flag for our purposes */ 124/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 125#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 126static OP *pp_slf (pTHX);
160 127
… …
164static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 132static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
139
169static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 142static SV *rv_diehook;
172static SV *rv_warnhook; 143static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
174 145
175/* async_pool helper stuff */ 146/* async_pool helper stuff */
176static SV *sv_pool_rss; 147static SV *sv_pool_rss;
177static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
179 153
180/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
181static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
182 162
183static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
185 165
186enum { 166enum {
… …
212 int valgrind_id; 192 int valgrind_id;
213#endif 193#endif
214 unsigned char flags; 194 unsigned char flags;
215} coro_cctx; 195} coro_cctx;
216 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
217enum { 201enum {
218 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
222}; 207};
223 208
224/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
225typedef struct 210typedef struct
226{ 211{
227 SV *defsv; 212 SV *defsv;
228 AV *defav; 213 AV *defav;
229 SV *errsv; 214 SV *errsv;
230 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
231#define VAR(name,type) type name; 217#define VAR(name,type) type name;
232# include "state.h" 218# include "state.h"
233#undef VAR 219#undef VAR
234} perl_slots; 220} perl_slots;
235 221
… …
238/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
239struct coro { 225struct coro {
240 /* the C coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 227 coro_cctx *cctx;
242 228
229 /* ready queue */
230 struct coro *next_ready;
231
243 /* state data */ 232 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 233 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 234 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
247 236
237 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro); 242 void (*on_destroy)(pTHX_ struct coro *coro);
253 243
254 /* statistics */ 244 /* statistics */
255 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
256 246
257 /* coro process data */ 247 /* coro process data */
258 int prio; 248 int prio;
259 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
260 251
261 /* async_pool */ 252 /* async_pool */
262 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
263 266
264 /* linked list */ 267 /* linked list */
265 struct coro *next, *prev; 268 struct coro *next, *prev;
266}; 269};
267 270
… …
270 273
271/* the following variables are effectively part of the perl context */ 274/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 275/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 276/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 277static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276 278
277/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
278 280
279#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
285 287
286/* for Coro.pm */ 288/* for Coro.pm */
287static SV *coro_current; 289static SV *coro_current;
288static SV *coro_readyhook; 290static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
292static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 293static struct coro *coro_first;
291#define coro_nready coroapi.nready 294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
292 315
293/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
294 317
295static SV * 318static SV *
296coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 343 get_hv (name, create);
321#endif 344#endif
322 return get_hv (name, create); 345 return get_hv (name, create);
323} 346}
324 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
325static AV * 447static AV *
326coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
327{ 449{
328 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
330 452
331 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 459#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 461 --AvFILLp (padlist);
340 462
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
343 465
344 return newpadlist; 466 return newpadlist;
345} 467}
346 468
347static void 469static void
348free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
349{ 471{
350 /* may be during global destruction */ 472 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
352 { 474 {
353 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
354 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
355 { 478 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
357 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 481 I32 j = AvFILLp (av);
359 SV *sv; 482
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 488 }
366 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
368 } 494 }
369} 495}
370 496
371static int 497static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 499{
374 AV *padlist; 500 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
376 506
377 /* casting is fun. */ 507 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
380 510
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 512
383 return 0; 513 return 0;
384} 514}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 515
389static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 517 0, 0, 0, 0,
391 coro_cv_free 518 coro_cv_free
392}; 519};
393
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436 520
437/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
438static void 522static void
439get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
440{ 524{
… …
446 else 530 else
447 { 531 {
448#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
455#else 539#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 541#endif
458 } 542 }
459} 543}
460 544
461static void 545static void
… …
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
469 553
470 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
471 555
472 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
474 558
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 560}
477 561
478/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
479 617
480static void 618static void
481load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
482{ 620{
483 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
484 c->slot = 0; 622 c->slot = 0;
485 623
486 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
487 625
488 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
489 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
490 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
491 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
492 631
493 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
494 # include "state.h" 633 # include "state.h"
495 #undef VAR 634 #undef VAR
496 635
… …
509 648
510 PUTBACK; 649 PUTBACK;
511 } 650 }
512 651
513 slf_frame = c->slf_frame; 652 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
515} 672}
516 673
517static void 674static void
518save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
519{ 676{
520 c->throw = coro_throw; 677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 696 c->slf_frame = slf_frame;
522 697
523 { 698 {
524 dSP; 699 dSP;
525 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
… …
537 { 712 {
538 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
539 { 714 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
541 716
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 718 {
544 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
545 720
546 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
547 { 722 {
… …
571 /* we manually unroll here, as usually 2 slots is enough */ 746 /* we manually unroll here, as usually 2 slots is enough */
572 if (SLOT_COUNT >= 1) CXINC; 747 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC; 748 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC; 749 if (SLOT_COUNT >= 3) CXINC;
575 { 750 {
576 int i; 751 unsigned int i;
577 for (i = 3; i < SLOT_COUNT; ++i) 752 for (i = 3; i < SLOT_COUNT; ++i)
578 CXINC; 753 CXINC;
579 } 754 }
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 755 cxstack_ix -= SLOT_COUNT; /* undo allocation */
581 756
582 c->mainstack = PL_mainstack; 757 c->mainstack = PL_mainstack;
583 758
584 { 759 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 760 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 761
587 slot->defav = GvAV (PL_defgv); 762 slot->defav = GvAV (PL_defgv);
588 slot->defsv = DEFSV; 763 slot->defsv = DEFSV;
589 slot->errsv = ERRSV; 764 slot->errsv = ERRSV;
590 slot->irsgv = GvSV (irsgv); 765 slot->irsgv = GvSV (irsgv);
766 slot->hinthv = GvHV (PL_hintgv);
591 767
592 #define VAR(name,type) slot->name = PL_ ## name; 768 #define VAR(name,type) slot->name = PL_ ## name;
593 # include "state.h" 769 # include "state.h"
594 #undef VAR 770 #undef VAR
595 } 771 }
… …
600 * of perl.c:init_stacks, except that it uses less memory 776 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 777 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 778 * not usually need a lot of stackspace.
603 */ 779 */
604#if CORO_PREFER_PERL_FUNCTIONS 780#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 781# define coro_init_stacks(thx) init_stacks ()
606#else 782#else
607static void 783static void
608coro_init_stacks (pTHX) 784coro_init_stacks (pTHX)
609{ 785{
610 PL_curstackinfo = new_stackinfo(32, 8); 786 PL_curstackinfo = new_stackinfo(32, 8);
… …
673#if !PERL_VERSION_ATLEAST (5,10,0) 849#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 850 Safefree (PL_retstack);
675#endif 851#endif
676} 852}
677 853
854#define CORO_RSS \
855 rss += sizeof (SYM (curstackinfo)); \
856 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
857 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
858 rss += SYM (tmps_max) * sizeof (SV *); \
859 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
860 rss += SYM (scopestack_max) * sizeof (I32); \
861 rss += SYM (savestack_max) * sizeof (ANY);
862
678static size_t 863static size_t
679coro_rss (pTHX_ struct coro *coro) 864coro_rss (pTHX_ struct coro *coro)
680{ 865{
681 size_t rss = sizeof (*coro); 866 size_t rss = sizeof (*coro);
682 867
683 if (coro->mainstack) 868 if (coro->mainstack)
684 { 869 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 870 if (coro->flags & CF_RUNNING)
689 { 871 {
690 slot = &tmp_slot; 872 #define SYM(sym) PL_ ## sym
691 873 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 874 #undef SYM
695 } 875 }
696 else 876 else
697 slot = coro->slot;
698
699 if (slot)
700 { 877 {
701 rss += sizeof (slot->curstackinfo); 878 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 879 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 880 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 881 }
713 } 882 }
714 883
715 return rss; 884 return rss;
716} 885}
… …
729#endif 898#endif
730 899
731/* 900/*
732 * This overrides the default magic get method of %SIG elements. 901 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 902 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 903 * and instead of trying to save and restore the hash elements, we just provide
735 * readback here. 904 * readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 905 */
740static int 906static int
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 907coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 908{
743 const char *s = MgPV_nolen_const (mg); 909 const char *s = MgPV_nolen_const (mg);
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 962 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 963
798 if (svp) 964 if (svp)
799 { 965 {
800 SV *old = *svp; 966 SV *old = *svp;
801 *svp = newSVsv (sv); 967 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 968 SvREFCNT_dec (old);
803 return 0; 969 return 0;
804 } 970 }
805 } 971 }
806 972
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 984slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 985{
820 return 0; 986 return 0;
821} 987}
822 988
823static UNOP coro_setup_op; 989static int
990slf_check_repeat (pTHX_ struct CoroSLF *frame)
991{
992 return 1;
993}
994
995static UNOP init_perl_op;
824 996
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 997static void NOINLINE /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 998init_perl (pTHX_ struct coro *coro)
827{ 999{
828 /* 1000 /*
829 * emulate part of the perl startup here. 1001 * emulate part of the perl startup here.
830 */ 1002 */
831 coro_init_stacks (aTHX); 1003 coro_init_stacks (aTHX);
832 1004
833 PL_runops = RUNOPS_DEFAULT; 1005 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1006 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1007 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1008 PL_comppad = 0;
1009 PL_comppad_name = 0;
1010 PL_comppad_name_fill = 0;
1011 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1012 PL_curpm = 0;
838 PL_curpad = 0; 1013 PL_curpad = 0;
839 PL_localizing = 0; 1014 PL_localizing = 0;
840 PL_dirty = 0; 1015 PL_dirty = 0;
841 PL_restartop = 0; 1016 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1017#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1018 PL_parser = 0;
844#endif 1019#endif
1020 PL_hints = 0;
845 1021
846 /* recreate the die/warn hooks */ 1022 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1023 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1024 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
849 1025
850 GvSV (PL_defgv) = newSV (0); 1026 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1027 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1028 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1029 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1030 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1031 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1032 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1033
857 { 1034 {
858 dSP; 1035 dSP;
859 UNOP myop; 1036 UNOP myop;
860 1037
861 Zero (&myop, 1, UNOP); 1038 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1039 myop.op_next = Nullop;
1040 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1041 myop.op_flags = OPf_WANT_VOID;
864 1042
865 PUSHMARK (SP); 1043 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1044 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1045 PUTBACK;
868 PL_op = (OP *)&myop; 1046 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1047 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1048 }
872 1049
873 /* this newly created coroutine might be run on an existing cctx which most 1050 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1051 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1052 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1053 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1054 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
878 1055
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1056 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1057 init_perl_op.op_next = PL_op;
1058 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1059 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1060 /* no flags etc. required, as an init function won't be called */
883 1061
884 PL_op = (OP *)&coro_setup_op; 1062 PL_op = (OP *)&init_perl_op;
885 1063
886 /* copy throw, in case it was set before coro_setup */ 1064 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1065 CORO_THROW = coro->except;
888}
889 1066
1067 SWAP_SVS (coro);
1068
1069 if (expect_false (enable_times))
1070 {
1071 coro_times_update ();
1072 coro_times_sub (coro);
1073 }
1074}
1075
890static void 1076static void
891coro_destruct (pTHX_ struct coro *coro) 1077coro_unwind_stacks (pTHX)
892{ 1078{
893 if (!IN_DESTRUCT) 1079 if (!IN_DESTRUCT)
894 { 1080 {
895 /* restore all saved variables and stuff */ 1081 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1082 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1090 POPSTACK_TO (PL_mainstack);
905 1091
906 /* unwind main stack */ 1092 /* unwind main stack */
907 dounwind (-1); 1093 dounwind (-1);
908 } 1094 }
1095}
909 1096
910 SvREFCNT_dec (GvSV (PL_defgv)); 1097static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1098destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1099{
913 SvREFCNT_dec (PL_defoutgv); 1100 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1101
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1102 {
1103 struct coro *current = SvSTATE_current;
1104
1105 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1106
1107 save_perl (aTHX_ current);
1108 load_perl (aTHX_ coro);
1109
1110 coro_unwind_stacks (aTHX);
1111 coro_destruct_stacks (aTHX);
1112
1113 /* restore swapped sv's */
1114 SWAP_SVS (coro);
1115
1116 // now save some sv's to be free'd later
1117 svf [0] = GvSV (PL_defgv);
1118 svf [1] = (SV *)GvAV (PL_defgv);
1119 svf [2] = GvSV (PL_errgv);
1120 svf [3] = (SV *)PL_defoutgv;
1121 svf [4] = PL_rs;
1122 svf [5] = GvSV (irsgv);
1123 svf [6] = (SV *)GvHV (PL_hintgv);
1124 svf [7] = PL_diehook;
1125 svf [8] = PL_warnhook;
1126 assert (9 == sizeof (svf) / sizeof (*svf));
1127
1128 load_perl (aTHX_ current);
1129 }
1130
1131 {
1132 unsigned int i;
1133
1134 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1135 SvREFCNT_dec (svf [i]);
1136
920 SvREFCNT_dec (coro->saved_deffh); 1137 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1138 SvREFCNT_dec (coro->rouse_cb);
922 1139 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1140 SvREFCNT_dec (coro->invoke_av);
1141 }
924} 1142}
925 1143
926INLINE void 1144INLINE void
927free_coro_mortal (pTHX) 1145free_coro_mortal (pTHX)
928{ 1146{
… …
936static int 1154static int
937runops_trace (pTHX) 1155runops_trace (pTHX)
938{ 1156{
939 COP *oldcop = 0; 1157 COP *oldcop = 0;
940 int oldcxix = -2; 1158 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1159
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1160 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1161 {
946 PERL_ASYNC_CHECK (); 1162 PERL_ASYNC_CHECK ();
947 1163
948 if (cctx->flags & CC_TRACE_ALL) 1164 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1165 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1166 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1167 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1168 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1169 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1170 AV *av = newAV (); /* return values */
955 SV **cb; 1171 SV **cb;
… …
992 1208
993 if (PL_curcop != &PL_compiling) 1209 if (PL_curcop != &PL_compiling)
994 { 1210 {
995 SV **cb; 1211 SV **cb;
996 1212
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1213 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1214 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1215 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1216
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1217 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1218 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1219 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1220 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1221 SV *fullname = sv_2mortal (newSV (0));
1007 1222
1008 if (isGV (gv)) 1223 if (isGV (gv))
… …
1013 SAVETMPS; 1228 SAVETMPS;
1014 EXTEND (SP, 3); 1229 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1230 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1231 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1232 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1233 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1234 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1235 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1236 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1237 SPAGAIN;
1023 FREETMPS; 1238 FREETMPS;
… …
1026 } 1241 }
1027 1242
1028 oldcxix = cxstack_ix; 1243 oldcxix = cxstack_ix;
1029 } 1244 }
1030 1245
1031 if (cctx->flags & CC_TRACE_LINE) 1246 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1247 {
1033 dSP; 1248 dSP;
1034 1249
1035 PL_runops = RUNOPS_DEFAULT; 1250 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1251 ENTER;
… …
1055 1270
1056 TAINT_NOT; 1271 TAINT_NOT;
1057 return 0; 1272 return 0;
1058} 1273}
1059 1274
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1275static struct CoroSLF cctx_ssl_frame;
1062 1276
1063static void 1277static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1278slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1279{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1280 ta->prev = 0;
1068} 1281}
1069 1282
1070static int 1283static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1284slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1285{
1073 *frame = cctx_ssl_frame; 1286 *frame = cctx_ssl_frame;
1074 1287
1075 return 0; 1288 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1289}
1077 1290
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1291/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1292static void NOINLINE
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1293cctx_prepare (pTHX)
1081{ 1294{
1082 PL_top_env = &PL_start_env; 1295 PL_top_env = &PL_start_env;
1083 1296
1084 if (cctx->flags & CC_TRACE) 1297 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1298 PL_runops = runops_trace;
1086 1299
1087 /* we already must be in an SLF call, there is no other valid way 1300 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1301 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1302 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1303 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1304
1092 cctx_ssl_cctx = cctx; 1305 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1306 cctx_ssl_frame = slf_frame;
1094 1307
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1308 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1309 slf_frame.check = slf_check_set_stacklevel;
1097} 1310}
… …
1120 /* normally we would need to skip the entersub here */ 1333 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1334 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1335 /* PL_nop = PL_nop->op_next */
1123 1336
1124 /* inject a fake subroutine call to cctx_init */ 1337 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1338 cctx_prepare (aTHX);
1126 1339
1127 /* cctx_run is the alternative tail of transfer() */ 1340 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1341 transfer_tail (aTHX);
1129 1342
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1343 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1344 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1345 perl_run (PL_curinterp);
1346 /*
1347 * Unfortunately, there is no way to get at the return values of the
1348 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1349 * runtime errors here, as this is just a random interpreter, not a thread.
1350 */
1133 1351
1134 /* 1352 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1353 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1354 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1355 * reason for perl_run to return. We try to exit by jumping to the
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1356 * bootstrap-time "top" top_env, as we cannot restore the "main"
1139 * coroutine as Coro has no such concept 1357 * coroutine as Coro has no such concept.
1358 * This actually isn't valid with the pthread backend, but OSes requiring
1359 * that backend are too broken to do it in a standards-compliant way.
1140 */ 1360 */
1141 PL_top_env = main_top_env; 1361 PL_top_env = main_top_env;
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1362 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1363 }
1144} 1364}
… …
1221cctx_destroy (coro_cctx *cctx) 1441cctx_destroy (coro_cctx *cctx)
1222{ 1442{
1223 if (!cctx) 1443 if (!cctx)
1224 return; 1444 return;
1225 1445
1446 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1447
1226 --cctx_count; 1448 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1449 coro_destroy (&cctx->cctx);
1228 1450
1229 /* coro_transfer creates new, empty cctx's */ 1451 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr) 1452 if (cctx->sptr)
… …
1293 /* TODO: throwing up here is considered harmful */ 1515 /* TODO: throwing up here is considered harmful */
1294 1516
1295 if (expect_true (prev != next)) 1517 if (expect_true (prev != next))
1296 { 1518 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1519 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1520 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1521
1300 if (expect_false (next->flags & CF_RUNNING))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED)) 1522 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1523 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1524
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1525#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1526 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1527 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1528#endif
… …
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1534transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1535{
1317 dSTACKLEVEL; 1536 dSTACKLEVEL;
1318 1537
1319 /* sometimes transfer is only called to set idle_sp */ 1538 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1539 if (expect_false (!prev))
1321 { 1540 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1541 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1542 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1543 }
1325 else if (expect_true (prev != next)) 1544 else if (expect_true (prev != next))
1326 { 1545 {
1327 coro_cctx *prev__cctx; 1546 coro_cctx *cctx_prev;
1328 1547
1329 if (expect_false (prev->flags & CF_NEW)) 1548 if (expect_false (prev->flags & CF_NEW))
1330 { 1549 {
1331 /* create a new empty/source context */ 1550 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1551 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1552 prev->flags |= CF_RUNNING;
1335 } 1553 }
1336 1554
1337 prev->flags &= ~CF_RUNNING; 1555 prev->flags &= ~CF_RUNNING;
… …
1343 if (expect_false (next->flags & CF_NEW)) 1561 if (expect_false (next->flags & CF_NEW))
1344 { 1562 {
1345 /* need to start coroutine */ 1563 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1564 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1565 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1566 init_perl (aTHX_ next);
1349 } 1567 }
1350 else 1568 else
1351 load_perl (aTHX_ next); 1569 load_perl (aTHX_ next);
1352 1570
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1571 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1572 if (expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1573 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1574 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1575 && !force_cctx
1360 )) 1576 ))
1361 { 1577 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1578 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1579 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1580
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1581 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1582 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1583 if (expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1584 if (expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1585 next->cctx = cctx_get (aTHX);
1372 1586
1373 cctx_put (prev__cctx); 1587 cctx_put (cctx_current);
1374 } 1588 }
1589 else
1590 prev->cctx = cctx_current;
1375 1591
1376 ++next->usecount; 1592 ++next->usecount;
1377 1593
1378 if (expect_true (!next->cctx)) 1594 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1595 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1596
1381 if (expect_false (prev__cctx != next->cctx)) 1597 next->cctx = 0;
1598
1599 if (expect_false (cctx_prev != cctx_current))
1382 { 1600 {
1383 prev__cctx->top_env = PL_top_env; 1601 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1602 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1603 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1604 }
1387 1605
1388 transfer_tail (aTHX); 1606 transfer_tail (aTHX);
1389 } 1607 }
1390} 1608}
… …
1398coro_state_destroy (pTHX_ struct coro *coro) 1616coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1617{
1400 if (coro->flags & CF_DESTROYED) 1618 if (coro->flags & CF_DESTROYED)
1401 return 0; 1619 return 0;
1402 1620
1403 if (coro->on_destroy) 1621 if (coro->on_destroy && !PL_dirty)
1404 coro->on_destroy (aTHX_ coro); 1622 coro->on_destroy (aTHX_ coro);
1405 1623
1406 coro->flags |= CF_DESTROYED; 1624 coro->flags |= CF_DESTROYED;
1407 1625
1408 if (coro->flags & CF_READY) 1626 if (coro->flags & CF_READY)
… …
1412 --coro_nready; 1630 --coro_nready;
1413 } 1631 }
1414 else 1632 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1633 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1634
1417 if (coro->mainstack && coro->mainstack != main_mainstack) 1635 if (coro->mainstack
1418 { 1636 && coro->mainstack != main_mainstack
1419 struct coro temp; 1637 && coro->slot
1420 1638 && !PL_dirty)
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro); 1639 destroy_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435 1640
1436 if (coro->next) coro->next->prev = coro->prev; 1641 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1642 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1643 if (coro == coro_first) coro_first = coro->next;
1644
1645 cctx_destroy (coro->cctx);
1646 SvREFCNT_dec (coro->startcv);
1647 SvREFCNT_dec (coro->args);
1648 SvREFCNT_dec (coro->swap_sv);
1649 SvREFCNT_dec (CORO_THROW);
1439 1650
1440 return 1; 1651 return 1;
1441} 1652}
1442 1653
1443static int 1654static int
… …
1498/** Coro ********************************************************************/ 1709/** Coro ********************************************************************/
1499 1710
1500INLINE void 1711INLINE void
1501coro_enq (pTHX_ struct coro *coro) 1712coro_enq (pTHX_ struct coro *coro)
1502{ 1713{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1714 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1715
1506INLINE SV * 1716 SvREFCNT_inc_NN (coro->hv);
1717
1718 coro->next_ready = 0;
1719 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1720 ready [1] = coro;
1721}
1722
1723INLINE struct coro *
1507coro_deq (pTHX) 1724coro_deq (pTHX)
1508{ 1725{
1509 int prio; 1726 int prio;
1510 1727
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1728 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1729 {
1513 return av_shift (coro_ready [prio]); 1730 struct coro **ready = coro_ready [prio];
1731
1732 if (ready [0])
1733 {
1734 struct coro *coro = ready [0];
1735 ready [0] = coro->next_ready;
1736 return coro;
1737 }
1738 }
1514 1739
1515 return 0; 1740 return 0;
1741}
1742
1743static void
1744invoke_sv_ready_hook_helper (void)
1745{
1746 dTHX;
1747 dSP;
1748
1749 ENTER;
1750 SAVETMPS;
1751
1752 PUSHMARK (SP);
1753 PUTBACK;
1754 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1755
1756 FREETMPS;
1757 LEAVE;
1516} 1758}
1517 1759
1518static int 1760static int
1519api_ready (pTHX_ SV *coro_sv) 1761api_ready (pTHX_ SV *coro_sv)
1520{ 1762{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1763 struct coro *coro = SvSTATE (coro_sv);
1529 1764
1530 if (coro->flags & CF_READY) 1765 if (coro->flags & CF_READY)
1531 return 0; 1766 return 0;
1532 1767
1533 coro->flags |= CF_READY; 1768 coro->flags |= CF_READY;
1534 1769
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1770 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1771
1541 if (sv_hook) 1772 if (!coro_nready++)
1542 { 1773 if (coroapi.readyhook)
1543 dSP; 1774 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1775
1559 return 1; 1776 return 1;
1560} 1777}
1561 1778
1562static int 1779static int
1563api_is_ready (pTHX_ SV *coro_sv) 1780api_is_ready (pTHX_ SV *coro_sv)
1564{ 1781{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1782 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1783}
1567 1784
1785/* expects to own a reference to next->hv */
1568INLINE void 1786INLINE void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1787prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1788{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1789 SV *prev_sv = SvRV (coro_current);
1790
1610 ta->prev = SvSTATE_hv (prev_sv); 1791 ta->prev = SvSTATE_hv (prev_sv);
1792 ta->next = next;
1793
1611 TRANSFER_CHECK (*ta); 1794 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1795
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1796 SvRV_set (coro_current, (SV *)next->hv);
1615 1797
1616 free_coro_mortal (aTHX); 1798 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1799 coro_mortal = prev_sv;
1618} 1800}
1619 1801
1802static void
1803prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1804{
1805 for (;;)
1806 {
1807 struct coro *next = coro_deq (aTHX);
1808
1809 if (expect_true (next))
1810 {
1811 /* cannot transfer to destroyed coros, skip and look for next */
1812 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1813 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1814 else
1815 {
1816 next->flags &= ~CF_READY;
1817 --coro_nready;
1818
1819 prepare_schedule_to (aTHX_ ta, next);
1820 break;
1821 }
1822 }
1823 else
1824 {
1825 /* nothing to schedule: call the idle handler */
1826 if (SvROK (sv_idle)
1827 && SvOBJECT (SvRV (sv_idle)))
1828 {
1829 if (SvRV (sv_idle) == SvRV (coro_current))
1830 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1831
1832 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1833 api_ready (aTHX_ SvRV (sv_idle));
1834 --coro_nready;
1835 }
1836 else
1837 {
1838 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1839 dSP;
1840
1841 ENTER;
1842 SAVETMPS;
1843
1844 PUSHMARK (SP);
1845 PUTBACK;
1846 call_sv (sv_idle, G_VOID | G_DISCARD);
1847
1848 FREETMPS;
1849 LEAVE;
1850 }
1851 }
1852 }
1853}
1854
1620INLINE void 1855INLINE void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 1856prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 1857{
1623 api_ready (aTHX_ coro_current); 1858 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 1859 prepare_schedule (aTHX_ ta);
… …
1643{ 1878{
1644 struct coro_transfer_args ta; 1879 struct coro_transfer_args ta;
1645 1880
1646 prepare_schedule (aTHX_ &ta); 1881 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 1882 TRANSFER (ta, 1);
1883}
1884
1885static void
1886api_schedule_to (pTHX_ SV *coro_sv)
1887{
1888 struct coro_transfer_args ta;
1889 struct coro *next = SvSTATE (coro_sv);
1890
1891 SvREFCNT_inc_NN (coro_sv);
1892 prepare_schedule_to (aTHX_ &ta, next);
1648} 1893}
1649 1894
1650static int 1895static int
1651api_cede (pTHX) 1896api_cede (pTHX)
1652{ 1897{
… …
1681static void 1926static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 1927api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 1928{
1684 struct coro *coro = SvSTATE (coro_sv); 1929 struct coro *coro = SvSTATE (coro_sv);
1685 1930
1931 if (coro->flags & CF_RUNNING)
1932 croak ("cannot enable tracing on a running coroutine, caught");
1933
1686 if (flags & CC_TRACE) 1934 if (flags & CC_TRACE)
1687 { 1935 {
1688 if (!coro->cctx) 1936 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 1937 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 1938 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 1939 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 1940
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1941 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 1942 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1943 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 1944 {
… …
1699 if (coro->flags & CF_RUNNING) 1947 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 1948 PL_runops = RUNOPS_DEFAULT;
1701 else 1949 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 1950 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 1951 }
1952}
1953
1954static void
1955coro_call_on_destroy (pTHX_ struct coro *coro)
1956{
1957 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1958 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1959
1960 if (on_destroyp)
1961 {
1962 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1963
1964 while (AvFILLp (on_destroy) >= 0)
1965 {
1966 dSP; /* don't disturb outer sp */
1967 SV *cb = av_pop (on_destroy);
1968
1969 PUSHMARK (SP);
1970
1971 if (statusp)
1972 {
1973 int i;
1974 AV *status = (AV *)SvRV (*statusp);
1975 EXTEND (SP, AvFILLp (status) + 1);
1976
1977 for (i = 0; i <= AvFILLp (status); ++i)
1978 PUSHs (AvARRAY (status)[i]);
1979 }
1980
1981 PUTBACK;
1982 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1983 }
1984 }
1985}
1986
1987static void
1988slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1989{
1990 int i;
1991 HV *hv = (HV *)SvRV (coro_current);
1992 AV *av = newAV ();
1993
1994 /* items are actually not so common, so optimise for this case */
1995 if (items)
1996 {
1997 av_extend (av, items - 1);
1998
1999 for (i = 0; i < items; ++i)
2000 av_push (av, SvREFCNT_inc_NN (arg [i]));
2001 }
2002
2003 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2004
2005 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2006 api_ready (aTHX_ sv_manager);
2007
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_repeat;
2010
2011 /* as a minor optimisation, we could unwind all stacks here */
2012 /* but that puts extra pressure on pp_slf, and is not worth much */
2013 /*coro_unwind_stacks (aTHX);*/
2014}
2015
2016/*****************************************************************************/
2017/* async pool handler */
2018
2019static int
2020slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2021{
2022 HV *hv = (HV *)SvRV (coro_current);
2023 struct coro *coro = (struct coro *)frame->data;
2024
2025 if (!coro->invoke_cb)
2026 return 1; /* loop till we have invoke */
2027 else
2028 {
2029 hv_store (hv, "desc", sizeof ("desc") - 1,
2030 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2031
2032 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2033
2034 {
2035 dSP;
2036 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2037 PUTBACK;
2038 }
2039
2040 SvREFCNT_dec (GvAV (PL_defgv));
2041 GvAV (PL_defgv) = coro->invoke_av;
2042 coro->invoke_av = 0;
2043
2044 return 0;
2045 }
2046}
2047
2048static void
2049slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2050{
2051 HV *hv = (HV *)SvRV (coro_current);
2052 struct coro *coro = SvSTATE_hv ((SV *)hv);
2053
2054 if (expect_true (coro->saved_deffh))
2055 {
2056 /* subsequent iteration */
2057 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2058 coro->saved_deffh = 0;
2059
2060 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2061 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2062 {
2063 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2064 coro->invoke_av = newAV ();
2065
2066 frame->prepare = prepare_nop;
2067 }
2068 else
2069 {
2070 av_clear (GvAV (PL_defgv));
2071 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2072
2073 coro->prio = 0;
2074
2075 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2076 api_trace (aTHX_ coro_current, 0);
2077
2078 frame->prepare = prepare_schedule;
2079 av_push (av_async_pool, SvREFCNT_inc (hv));
2080 }
2081 }
2082 else
2083 {
2084 /* first iteration, simply fall through */
2085 frame->prepare = prepare_nop;
2086 }
2087
2088 frame->check = slf_check_pool_handler;
2089 frame->data = (void *)coro;
2090}
2091
2092/*****************************************************************************/
2093/* rouse callback */
2094
2095#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2096
2097static void
2098coro_rouse_callback (pTHX_ CV *cv)
2099{
2100 dXSARGS;
2101 SV *data = (SV *)S_GENSUB_ARG;
2102
2103 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2104 {
2105 /* first call, set args */
2106 SV *coro = SvRV (data);
2107 AV *av = newAV ();
2108
2109 SvRV_set (data, (SV *)av);
2110
2111 /* better take a full copy of the arguments */
2112 while (items--)
2113 av_store (av, items, newSVsv (ST (items)));
2114
2115 api_ready (aTHX_ coro);
2116 SvREFCNT_dec (coro);
2117 }
2118
2119 XSRETURN_EMPTY;
2120}
2121
2122static int
2123slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2124{
2125 SV *data = (SV *)frame->data;
2126
2127 if (CORO_THROW)
2128 return 0;
2129
2130 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2131 return 1;
2132
2133 /* now push all results on the stack */
2134 {
2135 dSP;
2136 AV *av = (AV *)SvRV (data);
2137 int i;
2138
2139 EXTEND (SP, AvFILLp (av) + 1);
2140 for (i = 0; i <= AvFILLp (av); ++i)
2141 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2142
2143 /* we have stolen the elements, so set length to zero and free */
2144 AvFILLp (av) = -1;
2145 av_undef (av);
2146
2147 PUTBACK;
2148 }
2149
2150 return 0;
2151}
2152
2153static void
2154slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2155{
2156 SV *cb;
2157
2158 if (items)
2159 cb = arg [0];
2160 else
2161 {
2162 struct coro *coro = SvSTATE_current;
2163
2164 if (!coro->rouse_cb)
2165 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2166
2167 cb = sv_2mortal (coro->rouse_cb);
2168 coro->rouse_cb = 0;
2169 }
2170
2171 if (!SvROK (cb)
2172 || SvTYPE (SvRV (cb)) != SVt_PVCV
2173 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2174 croak ("Coro::rouse_wait called with illegal callback argument,");
2175
2176 {
2177 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2178 SV *data = (SV *)S_GENSUB_ARG;
2179
2180 frame->data = (void *)data;
2181 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2182 frame->check = slf_check_rouse_wait;
2183 }
2184}
2185
2186static SV *
2187coro_new_rouse_cb (pTHX)
2188{
2189 HV *hv = (HV *)SvRV (coro_current);
2190 struct coro *coro = SvSTATE_hv (hv);
2191 SV *data = newRV_inc ((SV *)hv);
2192 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2193
2194 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2195 SvREFCNT_dec (data); /* magicext increases the refcount */
2196
2197 SvREFCNT_dec (coro->rouse_cb);
2198 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2199
2200 return cb;
1704} 2201}
1705 2202
1706/*****************************************************************************/ 2203/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2204/* schedule-like-function opcode (SLF) */
1708 2205
… …
1755static void 2252static void
1756slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2253slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757{ 2254{
1758 frame->prepare = prepare_schedule; 2255 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2256 frame->check = slf_check_nop;
2257}
2258
2259static void
2260slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2261{
2262 struct coro *next = (struct coro *)slf_frame.data;
2263
2264 SvREFCNT_inc_NN (next->hv);
2265 prepare_schedule_to (aTHX_ ta, next);
2266}
2267
2268static void
2269slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2270{
2271 if (!items)
2272 croak ("Coro::schedule_to expects a coroutine argument, caught");
2273
2274 frame->data = (void *)SvSTATE (arg [0]);
2275 frame->prepare = slf_prepare_schedule_to;
2276 frame->check = slf_check_nop;
2277}
2278
2279static void
2280slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2281{
2282 api_ready (aTHX_ SvRV (coro_current));
2283
2284 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1760} 2285}
1761 2286
1762static void 2287static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2288slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2289{
… …
1835 } 2360 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2361 while (slf_frame.check (aTHX_ &slf_frame));
1837 2362
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2363 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2364
2365 /* exception handling */
2366 if (expect_false (CORO_THROW))
2367 {
2368 SV *exception = sv_2mortal (CORO_THROW);
2369
2370 CORO_THROW = 0;
2371 sv_setsv (ERRSV, exception);
2372 croak (0);
2373 }
2374
1840 /* return value handling - mostly like entersub */ 2375 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2376 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2377 if (GIMME_V == G_SCALAR)
1843 { 2378 {
1844 dSP; 2379 dSP;
… …
1850 bot [1] = *sp; 2385 bot [1] = *sp;
1851 2386
1852 SP = bot + 1; 2387 SP = bot + 1;
1853 2388
1854 PUTBACK; 2389 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2390 }
1866 2391
1867 return NORMAL; 2392 return NORMAL;
1868} 2393}
1869 2394
… …
1910 } 2435 }
1911 else 2436 else
1912 slf_argc = 0; 2437 slf_argc = 0;
1913 2438
1914 PL_op->op_ppaddr = pp_slf; 2439 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2440 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2441
1917 PL_op = (OP *)&slf_restore; 2442 PL_op = (OP *)&slf_restore;
2443}
2444
2445/*****************************************************************************/
2446/* dynamic wind */
2447
2448static void
2449on_enterleave_call (pTHX_ SV *cb)
2450{
2451 dSP;
2452
2453 PUSHSTACK;
2454
2455 PUSHMARK (SP);
2456 PUTBACK;
2457 call_sv (cb, G_VOID | G_DISCARD);
2458 SPAGAIN;
2459
2460 POPSTACK;
2461}
2462
2463static SV *
2464coro_avp_pop_and_free (pTHX_ AV **avp)
2465{
2466 AV *av = *avp;
2467 SV *res = av_pop (av);
2468
2469 if (AvFILLp (av) < 0)
2470 {
2471 *avp = 0;
2472 SvREFCNT_dec (av);
2473 }
2474
2475 return res;
2476}
2477
2478static void
2479coro_pop_on_enter (pTHX_ void *coro)
2480{
2481 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2482 SvREFCNT_dec (cb);
2483}
2484
2485static void
2486coro_pop_on_leave (pTHX_ void *coro)
2487{
2488 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2489 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2490}
1919 2491
1920/*****************************************************************************/ 2492/*****************************************************************************/
1921/* PerlIO::cede */ 2493/* PerlIO::cede */
1922 2494
… …
1991 PerlIOBuf_get_cnt, 2563 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2564 PerlIOBuf_set_ptrcnt,
1993}; 2565};
1994 2566
1995/*****************************************************************************/ 2567/*****************************************************************************/
2568/* Coro::Semaphore & Coro::Signal */
2569
2570static SV *
2571coro_waitarray_new (pTHX_ int count)
2572{
2573 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2574 AV *av = newAV ();
2575 SV **ary;
2576
2577 /* unfortunately, building manually saves memory */
2578 Newx (ary, 2, SV *);
2579 AvALLOC (av) = ary;
2580#if PERL_VERSION_ATLEAST (5,10,0)
2581 AvARRAY (av) = ary;
2582#else
2583 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2584 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2585 SvPVX ((SV *)av) = (char *)ary;
2586#endif
2587 AvMAX (av) = 1;
2588 AvFILLp (av) = 0;
2589 ary [0] = newSViv (count);
2590
2591 return newRV_noinc ((SV *)av);
2592}
2593
1996/* Coro::Semaphore */ 2594/* semaphore */
1997 2595
1998static void 2596static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2597coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2598{
2001 SV *count_sv = AvARRAY (av)[0]; 2599 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2611 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2612 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2613 cb = av_shift (av);
2016 2614
2017 if (SvOBJECT (cb)) 2615 if (SvOBJECT (cb))
2616 {
2018 api_ready (aTHX_ cb); 2617 api_ready (aTHX_ cb);
2019 else 2618 --count;
2020 croak ("callbacks not yet supported"); 2619 }
2620 else if (SvTYPE (cb) == SVt_PVCV)
2621 {
2622 dSP;
2623 PUSHMARK (SP);
2624 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2625 PUTBACK;
2626 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2627 }
2021 2628
2022 SvREFCNT_dec (cb); 2629 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2630 }
2026} 2631}
2027 2632
2028static void 2633static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2634coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2636 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2637 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2033} 2638}
2034 2639
2035static int 2640static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2641slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2642{
2038 AV *av = (AV *)frame->data; 2643 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2644 SV *count_sv = AvARRAY (av)[0];
2040 2645
2646 /* if we are about to throw, don't actually acquire the lock, just throw */
2647 if (CORO_THROW)
2648 return 0;
2041 if (SvIVX (count_sv) > 0) 2649 else if (SvIVX (count_sv) > 0)
2042 { 2650 {
2043 SvSTATE_current->on_destroy = 0; 2651 SvSTATE_current->on_destroy = 0;
2652
2653 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2654 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2655 else
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2045 return 0; 2658 return 0;
2046 } 2659 }
2047 else 2660 else
2048 { 2661 {
2049 int i; 2662 int i;
… …
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2671 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2059 return 1; 2672 return 1;
2060 } 2673 }
2061} 2674}
2062 2675
2063static void 2676static int
2677slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2678{
2679 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2680}
2681
2682static int
2683slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2684{
2685 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2686}
2687
2688static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2689slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 2690{
2066 AV *av = (AV *)SvRV (arg [0]); 2691 AV *av = (AV *)SvRV (arg [0]);
2067 2692
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 2693 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 2694 {
2070 frame->data = (void *)av; 2695 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 2696 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 2697 }
2074 else 2698 else
2075 { 2699 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2700 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 2701
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2702 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 2703 frame->prepare = prepare_schedule;
2080 2704
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 2705 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2706 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2707 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2085 } 2708 }
2709}
2086 2710
2711static void
2712slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2713{
2714 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 2715 frame->check = slf_check_semaphore_down;
2088
2089} 2716}
2090 2717
2091/*****************************************************************************/ 2718static void
2092/* gensub: simple closure generation utility */ 2719slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 2720{
2102 CV *cv = (CV *)newSV (0); 2721 if (items >= 2)
2722 {
2723 /* callback form */
2724 AV *av = (AV *)SvRV (arg [0]);
2725 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 2726
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 2727 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 2728
2106 CvANON_on (cv); 2729 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 2730 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 2731
2111 return newRV_noinc ((SV *)cv); 2732 frame->prepare = prepare_nop;
2733 frame->check = slf_check_nop;
2734 }
2735 else
2736 {
2737 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2738 frame->check = slf_check_semaphore_wait;
2739 }
2740}
2741
2742/* signal */
2743
2744static void
2745coro_signal_wake (pTHX_ AV *av, int count)
2746{
2747 SvIVX (AvARRAY (av)[0]) = 0;
2748
2749 /* now signal count waiters */
2750 while (count > 0 && AvFILLp (av) > 0)
2751 {
2752 SV *cb;
2753
2754 /* swap first two elements so we can shift a waiter */
2755 cb = AvARRAY (av)[0];
2756 AvARRAY (av)[0] = AvARRAY (av)[1];
2757 AvARRAY (av)[1] = cb;
2758
2759 cb = av_shift (av);
2760
2761 if (SvTYPE (cb) == SVt_PVCV)
2762 {
2763 dSP;
2764 PUSHMARK (SP);
2765 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2766 PUTBACK;
2767 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2768 }
2769 else
2770 {
2771 api_ready (aTHX_ cb);
2772 sv_setiv (cb, 0); /* signal waiter */
2773 }
2774
2775 SvREFCNT_dec (cb);
2776
2777 --count;
2778 }
2779}
2780
2781static int
2782slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2783{
2784 /* if we are about to throw, also stop waiting */
2785 return SvROK ((SV *)frame->data) && !CORO_THROW;
2786}
2787
2788static void
2789slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2790{
2791 AV *av = (AV *)SvRV (arg [0]);
2792
2793 if (items >= 2)
2794 {
2795 SV *cb_cv = s_get_cv_croak (arg [1]);
2796 av_push (av, SvREFCNT_inc_NN (cb_cv));
2797
2798 if (SvIVX (AvARRAY (av)[0]))
2799 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2800
2801 frame->prepare = prepare_nop;
2802 frame->check = slf_check_nop;
2803 }
2804 else if (SvIVX (AvARRAY (av)[0]))
2805 {
2806 SvIVX (AvARRAY (av)[0]) = 0;
2807 frame->prepare = prepare_nop;
2808 frame->check = slf_check_nop;
2809 }
2810 else
2811 {
2812 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2813
2814 av_push (av, waiter);
2815
2816 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2817 frame->prepare = prepare_schedule;
2818 frame->check = slf_check_signal_wait;
2819 }
2112} 2820}
2113 2821
2114/*****************************************************************************/ 2822/*****************************************************************************/
2115/* Coro::AIO */ 2823/* Coro::AIO */
2116 2824
… …
2127 2835
2128static void 2836static void
2129coro_aio_callback (pTHX_ CV *cv) 2837coro_aio_callback (pTHX_ CV *cv)
2130{ 2838{
2131 dXSARGS; 2839 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 2840 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 2841 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 2842 SV *data_sv = newSV (sizeof (struct io_state));
2135 2843
2136 av_extend (state, items); 2844 av_extend (state, items - 1);
2137 2845
2138 sv_upgrade (data_sv, SVt_PV); 2846 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 2847 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 2848 SvPOK_only (data_sv);
2141 2849
… …
2166static int 2874static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 2875slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 2876{
2169 AV *state = (AV *)frame->data; 2877 AV *state = (AV *)frame->data;
2170 2878
2879 /* if we are about to throw, return early */
2880 /* this does not cancel the aio request, but at least */
2881 /* it quickly returns */
2882 if (CORO_THROW)
2883 return 0;
2884
2171 /* one element that is an RV? repeat! */ 2885 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 2886 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173 return 1; 2887 return 1;
2174 2888
2175 /* restore status */ 2889 /* restore status */
… …
2245 2959
2246 for (i = 0; i < items; ++i) 2960 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 2961 PUSHs (arg [i]);
2248 2962
2249 /* now push the callback closure */ 2963 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 2964 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 2965
2252 /* now call the AIO function - we assume our request is uncancelable */ 2966 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 2967 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 2968 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 2969 }
… …
2269 2983
2270 XSRETURN_EMPTY; 2984 XSRETURN_EMPTY;
2271} 2985}
2272 2986
2273/*****************************************************************************/ 2987/*****************************************************************************/
2988
2989#if CORO_CLONE
2990# include "clone.c"
2991#endif
2992
2993/*****************************************************************************/
2994
2995static SV *
2996coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2997{
2998 SV *coro_sv;
2999 struct coro *coro;
3000 MAGIC *mg;
3001 HV *hv;
3002 SV *cb;
3003 int i;
3004
3005 if (argc > 0)
3006 {
3007 cb = s_get_cv_croak (argv [0]);
3008
3009 if (!is_coro)
3010 {
3011 if (CvISXSUB (cb))
3012 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3013
3014 if (!CvROOT (cb))
3015 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3016 }
3017 }
3018
3019 Newz (0, coro, 1, struct coro);
3020 coro->args = newAV ();
3021 coro->flags = CF_NEW;
3022
3023 if (coro_first) coro_first->prev = coro;
3024 coro->next = coro_first;
3025 coro_first = coro;
3026
3027 coro->hv = hv = newHV ();
3028 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3029 mg->mg_flags |= MGf_DUP;
3030 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3031
3032 if (argc > 0)
3033 {
3034 av_extend (coro->args, argc + is_coro - 1);
3035
3036 if (is_coro)
3037 {
3038 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3039 cb = (SV *)cv_coro_run;
3040 }
3041
3042 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3043
3044 for (i = 1; i < argc; i++)
3045 av_push (coro->args, newSVsv (argv [i]));
3046 }
3047
3048 return coro_sv;
3049}
2274 3050
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3051MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3052
2277PROTOTYPES: DISABLE 3053PROTOTYPES: DISABLE
2278 3054
… …
2283 coro_thx = PERL_GET_CONTEXT; 3059 coro_thx = PERL_GET_CONTEXT;
2284# endif 3060# endif
2285#endif 3061#endif
2286 BOOT_PAGESIZE; 3062 BOOT_PAGESIZE;
2287 3063
3064 cctx_current = cctx_new_empty ();
3065
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3066 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3067 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3068
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3069 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3070 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2311 3089
2312 { 3090 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3091 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3092
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3093 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3094 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3095
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3096 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3097 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3098 }
2323 3099
2324 coroapi.ver = CORO_API_VERSION; 3100 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3101 coroapi.rev = CORO_API_REVISION;
2326 3102
… …
2338 3114
2339 if (!svp) croak ("Time::HiRes is required"); 3115 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3116 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341 3117
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3118 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3119
3120 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3121 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2343 } 3122 }
2344 3123
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3124 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2346} 3125}
2347 3126
2348SV * 3127SV *
2349new (char *klass, ...) 3128new (SV *klass, ...)
3129 ALIAS:
3130 Coro::new = 1
2350 CODE: 3131 CODE:
2351{ 3132 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3133 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3134 RETVAL
2376 3135
2377void 3136void
2378transfer (...) 3137transfer (...)
2379 PROTOTYPE: $$ 3138 PROTOTYPE: $$
… …
2390void 3149void
2391_exit (int code) 3150_exit (int code)
2392 PROTOTYPE: $ 3151 PROTOTYPE: $
2393 CODE: 3152 CODE:
2394 _exit (code); 3153 _exit (code);
3154
3155SV *
3156clone (Coro::State coro)
3157 CODE:
3158{
3159#if CORO_CLONE
3160 struct coro *ncoro = coro_clone (aTHX_ coro);
3161 MAGIC *mg;
3162 /* TODO: too much duplication */
3163 ncoro->hv = newHV ();
3164 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3165 mg->mg_flags |= MGf_DUP;
3166 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3167#else
3168 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3169#endif
3170}
3171 OUTPUT:
3172 RETVAL
2395 3173
2396int 3174int
2397cctx_stacksize (int new_stacksize = 0) 3175cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3176 PROTOTYPE: ;$
2399 CODE: 3177 CODE:
… …
2449 eval = 1 3227 eval = 1
2450 CODE: 3228 CODE:
2451{ 3229{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3230 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3231 {
2454 struct coro temp; 3232 struct coro *current = SvSTATE_current;
2455 3233
2456 if (!(coro->flags & CF_RUNNING)) 3234 if (current != coro)
2457 { 3235 {
2458 PUTBACK; 3236 PUTBACK;
2459 save_perl (aTHX_ &temp); 3237 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3238 load_perl (aTHX_ coro);
3239 SPAGAIN;
2461 } 3240 }
2462 3241
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3242 PUSHSTACK;
3243
2469 PUSHMARK (SP); 3244 PUSHMARK (SP);
3245 PUTBACK;
2470 3246
2471 if (ix) 3247 if (ix)
2472 eval_sv (coderef, 0); 3248 eval_sv (coderef, 0);
2473 else 3249 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3250 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3251
2476 POPSTACK; 3252 POPSTACK;
2477 SPAGAIN; 3253 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3254
2483 if (!(coro->flags & CF_RUNNING)) 3255 if (current != coro)
2484 { 3256 {
3257 PUTBACK;
2485 save_perl (aTHX_ coro); 3258 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3259 load_perl (aTHX_ current);
2487 SPAGAIN; 3260 SPAGAIN;
2488 } 3261 }
2489 } 3262 }
2490} 3263}
2491 3264
… …
2495 ALIAS: 3268 ALIAS:
2496 is_ready = CF_READY 3269 is_ready = CF_READY
2497 is_running = CF_RUNNING 3270 is_running = CF_RUNNING
2498 is_new = CF_NEW 3271 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3272 is_destroyed = CF_DESTROYED
3273 is_suspended = CF_SUSPENDED
2500 CODE: 3274 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3275 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3276 OUTPUT:
2503 RETVAL 3277 RETVAL
2504 3278
… …
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3280throw (Coro::State self, SV *throw = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3281 PROTOTYPE: $;$
2508 CODE: 3282 CODE:
2509{ 3283{
2510 struct coro *current = SvSTATE_current; 3284 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3285 SV **throwp = self == current ? &CORO_THROW : &self->except;
2512 SvREFCNT_dec (*throwp); 3286 SvREFCNT_dec (*throwp);
3287 SvGETMAGIC (throw);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3288 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2514} 3289}
2515 3290
2516void 3291void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3292api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
… …
2520 3295
2521SV * 3296SV *
2522has_cctx (Coro::State coro) 3297has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3298 PROTOTYPE: $
2524 CODE: 3299 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3300 /* maybe manage the running flag differently */
3301 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3302 OUTPUT:
2527 RETVAL 3303 RETVAL
2528 3304
2529int 3305int
2530is_traced (Coro::State coro) 3306is_traced (Coro::State coro)
… …
2550 3326
2551void 3327void
2552force_cctx () 3328force_cctx ()
2553 PROTOTYPE: 3329 PROTOTYPE:
2554 CODE: 3330 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3331 cctx_current->idle_sp = 0;
2556 3332
2557void 3333void
2558swap_defsv (Coro::State self) 3334swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3335 PROTOTYPE: $
2560 ALIAS: 3336 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3344 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3345
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3346 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3347 }
2572 3348
3349void
3350cancel (Coro::State self)
3351 CODE:
3352 coro_state_destroy (aTHX_ self);
3353 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3354
3355
3356SV *
3357enable_times (int enabled = enable_times)
3358 CODE:
3359{
3360 RETVAL = boolSV (enable_times);
3361
3362 if (enabled != enable_times)
3363 {
3364 enable_times = enabled;
3365
3366 coro_times_update ();
3367 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3368 }
3369}
3370 OUTPUT:
3371 RETVAL
3372
3373void
3374times (Coro::State self)
3375 PPCODE:
3376{
3377 struct coro *current = SvSTATE (coro_current);
3378
3379 if (expect_false (current == self))
3380 {
3381 coro_times_update ();
3382 coro_times_add (SvSTATE (coro_current));
3383 }
3384
3385 EXTEND (SP, 2);
3386 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3387 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3388
3389 if (expect_false (current == self))
3390 coro_times_sub (SvSTATE (coro_current));
3391}
3392
3393void
3394swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3395 CODE:
3396{
3397 struct coro *current = SvSTATE_current;
3398
3399 if (current == coro)
3400 SWAP_SVS (current);
3401
3402 if (!coro->swap_sv)
3403 coro->swap_sv = newAV ();
3404
3405 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3406 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3407
3408 if (current == coro)
3409 SWAP_SVS (current);
3410}
3411
2573 3412
2574MODULE = Coro::State PACKAGE = Coro 3413MODULE = Coro::State PACKAGE = Coro
2575 3414
2576BOOT: 3415BOOT:
2577{ 3416{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3417 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3418 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3419 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3420 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3421 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3422 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3423 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3424 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3425 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2586 3426
3427 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3428 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3429 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3430 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3431
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3432 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3433
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3434 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3435 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3436 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3437 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3438 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3439 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3440
2599 { 3441 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3442 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3443
2602 coroapi.schedule = api_schedule; 3444 coroapi.schedule = api_schedule;
3445 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3446 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3447 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3448 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3449 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3450 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3451 coroapi.current = coro_current;
2609 3452
2610 GCoroAPI = &coroapi; 3453 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3454 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3455 SvREADONLY_on (sv);
2613 } 3456 }
2614} 3457}
3458
3459SV *
3460async (...)
3461 PROTOTYPE: &@
3462 CODE:
3463 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3464 api_ready (aTHX_ RETVAL);
3465 OUTPUT:
3466 RETVAL
3467
3468void
3469terminate (...)
3470 CODE:
3471 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2615 3472
2616void 3473void
2617schedule (...) 3474schedule (...)
2618 CODE: 3475 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3476 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3477
3478void
3479schedule_to (...)
3480 CODE:
3481 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3482
3483void
3484cede_to (...)
3485 CODE:
3486 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3487
2621void 3488void
2622cede (...) 3489cede (...)
2623 CODE: 3490 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3491 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3505void
2639_set_readyhook (SV *hook) 3506_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3507 PROTOTYPE: $
2641 CODE: 3508 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3509 SvREFCNT_dec (coro_readyhook);
3510 SvGETMAGIC (hook);
3511 if (SvOK (hook))
3512 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3513 coro_readyhook = newSVsv (hook);
3514 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3515 }
3516 else
3517 {
3518 coro_readyhook = 0;
3519 CORO_READYHOOK = 0;
3520 }
2644 3521
2645int 3522int
2646prio (Coro::State coro, int newprio = 0) 3523prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3524 PROTOTYPE: $;$
2648 ALIAS: 3525 ALIAS:
… …
2654 if (items > 1) 3531 if (items > 1)
2655 { 3532 {
2656 if (ix) 3533 if (ix)
2657 newprio = coro->prio - newprio; 3534 newprio = coro->prio - newprio;
2658 3535
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3536 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3537 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3538
2662 coro->prio = newprio; 3539 coro->prio = newprio;
2663 } 3540 }
2664} 3541}
2665 OUTPUT: 3542 OUTPUT:
… …
2679 CODE: 3556 CODE:
2680 RETVAL = coro_nready; 3557 RETVAL = coro_nready;
2681 OUTPUT: 3558 OUTPUT:
2682 RETVAL 3559 RETVAL
2683 3560
2684# for async_pool speedup
2685void 3561void
2686_pool_1 (SV *cb) 3562suspend (Coro::State self)
3563 PROTOTYPE: $
2687 CODE: 3564 CODE:
2688{ 3565 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 3566
2696 if (!invoke) 3567void
3568resume (Coro::State self)
3569 PROTOTYPE: $
3570 CODE:
3571 self->flags &= ~CF_SUSPENDED;
3572
3573void
3574_pool_handler (...)
3575 CODE:
3576 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3577
3578void
3579async_pool (SV *cv, ...)
3580 PROTOTYPE: &@
3581 PPCODE:
3582{
3583 HV *hv = (HV *)av_pop (av_async_pool);
3584 AV *av = newAV ();
3585 SV *cb = ST (0);
3586 int i;
3587
3588 av_extend (av, items - 2);
3589 for (i = 1; i < items; ++i)
3590 av_push (av, SvREFCNT_inc_NN (ST (i)));
3591
3592 if ((SV *)hv == &PL_sv_undef)
2697 { 3593 {
2698 SV *old = PL_diehook; 3594 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 3595 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 3596 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 3597 }
2703 3598
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 3599 {
2717 av_fill (defav, len - 1); 3600 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 3601
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3602 assert (!coro->invoke_cb);
3603 assert (!coro->invoke_av);
3604 coro->invoke_cb = SvREFCNT_inc (cb);
3605 coro->invoke_av = av;
2720 } 3606 }
3607
3608 api_ready (aTHX_ (SV *)hv);
3609
3610 if (GIMME_V != G_VOID)
3611 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3612 else
3613 SvREFCNT_dec (hv);
2721} 3614}
3615
3616SV *
3617rouse_cb ()
3618 PROTOTYPE:
3619 CODE:
3620 RETVAL = coro_new_rouse_cb (aTHX);
3621 OUTPUT:
3622 RETVAL
2722 3623
2723void 3624void
2724_pool_2 (SV *cb) 3625rouse_wait (...)
3626 PROTOTYPE: ;$
3627 PPCODE:
3628 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3629
3630void
3631on_enter (SV *block)
3632 ALIAS:
3633 on_leave = 1
3634 PROTOTYPE: &
2725 CODE: 3635 CODE:
2726{ 3636{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 3637 struct coro *coro = SvSTATE_current;
3638 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 3639
2730 sv_setsv (cb, &PL_sv_undef); 3640 block = s_get_cv_croak (block);
2731 3641
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3642 if (!*avp)
2733 coro->saved_deffh = 0; 3643 *avp = newAV ();
2734 3644
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3645 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 3646
2744 av_clear (GvAV (PL_defgv)); 3647 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 3648 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 3649
2748 coro->prio = 0; 3650 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 3651 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3652 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 3653}
2755 3654
2756 3655
2757MODULE = Coro::State PACKAGE = PerlIO::cede 3656MODULE = Coro::State PACKAGE = PerlIO::cede
2758 3657
… …
2761 3660
2762 3661
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 3662MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 3663
2765SV * 3664SV *
2766new (SV *klass, SV *count_ = 0) 3665new (SV *klass, SV *count = 0)
2767 CODE: 3666 CODE:
2768{ 3667{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3668 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 3669
2773 /* unfortunately, building manually saves memory */ 3670 if (count)
2774 Newx (ary, 2, SV *); 3671 {
2775 AvALLOC (av) = ary; 3672 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 3673
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3674 if (SvOK (count))
3675 semcnt = SvIV (count);
3676 }
3677
3678 RETVAL = sv_bless (
3679 coro_waitarray_new (aTHX_ semcnt),
3680 GvSTASH (CvGV (cv))
3681 );
2782} 3682}
3683 OUTPUT:
3684 RETVAL
3685
3686# helper for Coro::Channel and others
3687SV *
3688_alloc (int count)
3689 CODE:
3690 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 3691 OUTPUT:
2784 RETVAL 3692 RETVAL
2785 3693
2786SV * 3694SV *
2787count (SV *self) 3695count (SV *self)
… …
2796 adjust = 1 3704 adjust = 1
2797 CODE: 3705 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3706 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 3707
2800void 3708void
2801down (SV *self) 3709down (...)
2802 CODE: 3710 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3711 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3712
3713void
3714wait (...)
3715 CODE:
3716 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 3717
2805void 3718void
2806try (SV *self) 3719try (SV *self)
2807 PPCODE: 3720 PPCODE:
2808{ 3721{
… …
2820 XSRETURN_NO; 3733 XSRETURN_NO;
2821} 3734}
2822 3735
2823void 3736void
2824waiters (SV *self) 3737waiters (SV *self)
2825 CODE: 3738 PPCODE:
2826{ 3739{
2827 AV *av = (AV *)SvRV (self); 3740 AV *av = (AV *)SvRV (self);
3741 int wcount = AvFILLp (av) + 1 - 1;
2828 3742
2829 if (GIMME_V == G_SCALAR) 3743 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3744 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 3745 else
2832 { 3746 {
2833 int i; 3747 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 3748 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 3749 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3750 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 3751 }
2838} 3752}
3753
3754MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3755
3756void
3757_may_delete (SV *sem, int count, int extra_refs)
3758 PPCODE:
3759{
3760 AV *av = (AV *)SvRV (sem);
3761
3762 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3763 && AvFILLp (av) == 0 /* no waiters, just count */
3764 && SvIV (AvARRAY (av)[0]) == count)
3765 XSRETURN_YES;
3766
3767 XSRETURN_NO;
3768}
3769
3770MODULE = Coro::State PACKAGE = Coro::Signal
3771
3772SV *
3773new (SV *klass)
3774 CODE:
3775 RETVAL = sv_bless (
3776 coro_waitarray_new (aTHX_ 0),
3777 GvSTASH (CvGV (cv))
3778 );
3779 OUTPUT:
3780 RETVAL
3781
3782void
3783wait (...)
3784 CODE:
3785 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3786
3787void
3788broadcast (SV *self)
3789 CODE:
3790{
3791 AV *av = (AV *)SvRV (self);
3792 coro_signal_wake (aTHX_ av, AvFILLp (av));
3793}
3794
3795void
3796send (SV *self)
3797 CODE:
3798{
3799 AV *av = (AV *)SvRV (self);
3800
3801 if (AvFILLp (av))
3802 coro_signal_wake (aTHX_ av, 1);
3803 else
3804 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3805}
3806
3807IV
3808awaited (SV *self)
3809 CODE:
3810 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3811 OUTPUT:
3812 RETVAL
2839 3813
2840 3814
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 3815MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 3816
2843BOOT: 3817BOOT:
… …
2871 3845
2872void 3846void
2873_register (char *target, char *proto, SV *req) 3847_register (char *target, char *proto, SV *req)
2874 CODE: 3848 CODE:
2875{ 3849{
2876 HV *st; 3850 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 3851 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 3852 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 3853 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3854 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 3855}
2884 3856
3857MODULE = Coro::State PACKAGE = Coro::Select
3858
3859void
3860patch_pp_sselect ()
3861 CODE:
3862 if (!coro_old_pp_sselect)
3863 {
3864 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3865 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3866 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3867 }
3868
3869void
3870unpatch_pp_sselect ()
3871 CODE:
3872 if (coro_old_pp_sselect)
3873 {
3874 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3875 coro_old_pp_sselect = 0;
3876 }
3877
3878

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