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Comparing Coro/Coro/State.xs (file contents):
Revision 1.298 by root, Tue Nov 18 23:20:41 2008 UTC vs.
Revision 1.398 by root, Sat May 7 14:11:10 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
16 21
17#ifdef WIN32 22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
26#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 31# define setjmp _setjmp /* deep magic */
22#else 32#else
23# include <inttypes.h> /* most portable stdint.h */ 33# include <inttypes.h> /* most portable stdint.h */
24#endif 34#endif
25 35
26#ifdef HAVE_MMAP 36#ifdef HAVE_MMAP
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
111#endif 68#endif
112 69
113#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
127#else 84#else
128# define dSTACKLEVEL volatile void *stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 86# define STACKLEVEL ((void *)&stacklevel)
130#endif 87#endif
131 88
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
133 90
134#if __GNUC__ >= 3 91#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
137# define INLINE static inline 94# define INLINE static inline
138#else 95#else
139# define attribute(x) 96# define attribute(x)
140# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
141# define INLINE static 98# define INLINE static
… …
153# if CORO_PTHREAD 110# if CORO_PTHREAD
154static void *coro_thx; 111static void *coro_thx;
155# endif 112# endif
156#endif 113#endif
157 114
115#ifdef __linux
116# include <time.h> /* for timespec */
117# include <syscall.h> /* for SYS_* */
118# ifdef SYS_clock_gettime
119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
120# define CORO_CLOCK_MONOTONIC 1
121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122# endif
123#endif
124
158static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
159 127
160/* we hijack an hopefully unused CV flag for our purposes */ 128/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 129#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 130static OP *pp_slf (pTHX);
131static void slf_destroy (pTHX_ struct coro *coro);
163 132
164static U32 cctx_gen; 133static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 134static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 135static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 136static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 137static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 138static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 139static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 140
141static AV *av_destroy; /* destruction queue */
142static SV *sv_manager; /* the manager coro */
143static SV *sv_idle; /* $Coro::idle */
144
172static GV *irsgv; /* $/ */ 145static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 146static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 147static SV *rv_diehook;
175static SV *rv_warnhook; 148static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 149static HV *hv_sig; /* %SIG */
177 150
178/* async_pool helper stuff */ 151/* async_pool helper stuff */
179static SV *sv_pool_rss; 152static SV *sv_pool_rss;
180static SV *sv_pool_size; 153static SV *sv_pool_size;
154static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 155static AV *av_async_pool; /* idle pool */
156static SV *sv_Coro; /* class string */
157static CV *cv_pool_handler;
182 158
183/* Coro::AnyEvent */ 159/* Coro::AnyEvent */
184static SV *sv_activity; 160static SV *sv_activity;
161
162/* enable processtime/realtime profiling */
163static char enable_times;
164typedef U32 coro_ts[2];
165static coro_ts time_real, time_cpu;
166static char times_valid;
185 167
186static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
188 170
189enum { 171enum {
… …
215 int valgrind_id; 197 int valgrind_id;
216#endif 198#endif
217 unsigned char flags; 199 unsigned char flags;
218} coro_cctx; 200} coro_cctx;
219 201
202static coro_cctx *cctx_current; /* the currently running cctx */
203
204/*****************************************************************************/
205
220enum { 206enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv; 218 SV *defsv;
231 AV *defav; 219 AV *defav;
232 SV *errsv; 220 SV *errsv;
233 SV *irsgv; 221 SV *irsgv;
222 HV *hinthv;
234#define VAR(name,type) type name; 223#define VAR(name,type) type name;
235# include "state.h" 224# include "state.h"
236#undef VAR 225#undef VAR
237} perl_slots; 226} perl_slots;
238 227
228// how many context stack entries do we need for perl_slots
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 230
241/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
242struct coro { 232struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 234 coro_cctx *cctx;
245 235
236 /* ready queue */
237 struct coro *next_ready;
238
246 /* state data */ 239 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 240 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 241 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
250 243
244 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 245 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 246 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 249
257 /* statistics */ 250 /* statistics */
258 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
259 252
260 /* coro process data */ 253 /* coro process data */
261 int prio; 254 int prio;
262 SV *except; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
256 SV *rouse_cb;
263 257
264 /* async_pool */ 258 /* async_pool */
265 SV *saved_deffh; 259 SV *saved_deffh;
260 SV *invoke_cb;
261 AV *invoke_av;
262
263 /* on_enter/on_leave */
264 AV *on_enter;
265 AV *on_leave;
266
267 /* swap_sv */
268 AV *swap_sv;
269
270 /* times */
271 coro_ts t_cpu, t_real;
266 272
267 /* linked list */ 273 /* linked list */
268 struct coro *next, *prev; 274 struct coro *next, *prev;
269}; 275};
270 276
271typedef struct coro *Coro__State; 277typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 278typedef struct coro *Coro__State_or_hashref;
273 279
274/* the following variables are effectively part of the perl context */ 280/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 281/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 282/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 283static struct CoroSLF slf_frame; /* the current slf frame */
278 284
279/** Coro ********************************************************************/ 285/** Coro ********************************************************************/
280 286
281#define PRIO_MAX 3 287#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 288#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 289#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 290#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 291#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 292#define CORO_PRIO_MIN -4
287 293
288/* for Coro.pm */ 294/* for Coro.pm */
289static SV *coro_current; 295static SV *coro_current;
290static SV *coro_readyhook; 296static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 297static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
298static CV *cv_coro_run;
292static struct coro *coro_first; 299static struct coro *coro_first;
293#define coro_nready coroapi.nready 300#define coro_nready coroapi.nready
301
302/** Coro::Select ************************************************************/
303
304static OP *(*coro_old_pp_sselect) (pTHX);
305static SV *coro_select_select;
306
307/* horrible hack, but if it works... */
308static OP *
309coro_pp_sselect (pTHX)
310{
311 dSP;
312 PUSHMARK (SP - 4); /* fake argument list */
313 XPUSHs (coro_select_select);
314 PUTBACK;
315
316 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
317 PL_op->op_flags |= OPf_STACKED;
318 PL_op->op_private = 0;
319 return PL_ppaddr [OP_ENTERSUB](aTHX);
320}
321
322/** time stuff **************************************************************/
323
324#ifdef HAS_GETTIMEOFDAY
325
326static void
327coro_u2time (pTHX_ UV ret[2])
328{
329 struct timeval tv;
330 gettimeofday (&tv, 0);
331
332 ret [0] = tv.tv_sec;
333 ret [1] = tv.tv_usec;
334}
335
336static double
337coro_nvtime ()
338{
339 struct timeval tv;
340 gettimeofday (&tv, 0);
341
342 return tv.tv_sec + tv.tv_usec * 1e-6;
343}
344
345static void
346time_init (pTHX)
347{
348 nvtime = coro_nvtime;
349 u2time = coro_u2time;
350}
351
352#else
353
354static void
355time_init (pTHX)
356{
357 SV **svp;
358
359 require_pv ("Time/HiRes.pm");
360
361 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
362
363 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
364 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
365
366 nvtime = INT2PTR (double (*)(), SvIV (*svp));
367
368 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
369 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
370}
371
372#endif
294 373
295/** lowlevel stuff **********************************************************/ 374/** lowlevel stuff **********************************************************/
296 375
297static SV * 376static SV *
298coro_get_sv (pTHX_ const char *name, int create) 377coro_get_sv (pTHX_ const char *name, int create)
… …
322 get_hv (name, create); 401 get_hv (name, create);
323#endif 402#endif
324 return get_hv (name, create); 403 return get_hv (name, create);
325} 404}
326 405
406INLINE void
407coro_times_update ()
408{
409#ifdef coro_clock_gettime
410 struct timespec ts;
411
412 ts.tv_sec = ts.tv_nsec = 0;
413 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
414 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
415
416 ts.tv_sec = ts.tv_nsec = 0;
417 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
418 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
419#else
420 dTHX;
421 UV tv[2];
422
423 u2time (aTHX_ tv);
424 time_real [0] = tv [0];
425 time_real [1] = tv [1] * 1000;
426#endif
427}
428
429INLINE void
430coro_times_add (struct coro *c)
431{
432 c->t_real [1] += time_real [1];
433 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
434 c->t_real [0] += time_real [0];
435
436 c->t_cpu [1] += time_cpu [1];
437 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
438 c->t_cpu [0] += time_cpu [0];
439}
440
441INLINE void
442coro_times_sub (struct coro *c)
443{
444 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
445 c->t_real [1] -= time_real [1];
446 c->t_real [0] -= time_real [0];
447
448 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
449 c->t_cpu [1] -= time_cpu [1];
450 c->t_cpu [0] -= time_cpu [0];
451}
452
453/*****************************************************************************/
454/* magic glue */
455
456#define CORO_MAGIC_type_cv 26
457#define CORO_MAGIC_type_state PERL_MAGIC_ext
458
459#define CORO_MAGIC_NN(sv, type) \
460 (expect_true (SvMAGIC (sv)->mg_type == type) \
461 ? SvMAGIC (sv) \
462 : mg_find (sv, type))
463
464#define CORO_MAGIC(sv, type) \
465 (expect_true (SvMAGIC (sv)) \
466 ? CORO_MAGIC_NN (sv, type) \
467 : 0)
468
469#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
470#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
471
472INLINE struct coro *
473SvSTATE_ (pTHX_ SV *coro)
474{
475 HV *stash;
476 MAGIC *mg;
477
478 if (SvROK (coro))
479 coro = SvRV (coro);
480
481 if (expect_false (SvTYPE (coro) != SVt_PVHV))
482 croak ("Coro::State object required");
483
484 stash = SvSTASH (coro);
485 if (expect_false (stash != coro_stash && stash != coro_state_stash))
486 {
487 /* very slow, but rare, check */
488 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
489 croak ("Coro::State object required");
490 }
491
492 mg = CORO_MAGIC_state (coro);
493 return (struct coro *)mg->mg_ptr;
494}
495
496#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
497
498/* faster than SvSTATE, but expects a coroutine hv */
499#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
500#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
501
502/*****************************************************************************/
503/* padlist management and caching */
504
327static AV * 505static AV *
328coro_clone_padlist (pTHX_ CV *cv) 506coro_derive_padlist (pTHX_ CV *cv)
329{ 507{
330 AV *padlist = CvPADLIST (cv); 508 AV *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 509 AV *newpadlist, *newpad;
332 510
333 newpadlist = newAV (); 511 newpadlist = newAV ();
… …
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 516 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 517#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 518 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist); 519 --AvFILLp (padlist);
342 520
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 521 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
344 av_store (newpadlist, 1, (SV *)newpad); 522 av_store (newpadlist, 1, (SV *)newpad);
345 523
346 return newpadlist; 524 return newpadlist;
347} 525}
348 526
349static void 527static void
350free_padlist (pTHX_ AV *padlist) 528free_padlist (pTHX_ AV *padlist)
351{ 529{
352 /* may be during global destruction */ 530 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 531 if (!IN_DESTRUCT)
354 { 532 {
355 I32 i = AvFILLp (padlist); 533 I32 i = AvFILLp (padlist);
356 while (i >= 0) 534
535 while (i > 0) /* special-case index 0 */
357 { 536 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 537 /* we try to be extra-careful here */
359 if (svp) 538 AV *av = (AV *)AvARRAY (padlist)[i--];
360 { 539 I32 j = AvFILLp (av);
361 SV *sv; 540
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 541 while (j >= 0)
542 SvREFCNT_dec (AvARRAY (av)[j--]);
543
544 AvFILLp (av) = -1;
363 SvREFCNT_dec (sv); 545 SvREFCNT_dec (av);
364
365 SvREFCNT_dec (*svp);
366 }
367 } 546 }
368 547
548 SvREFCNT_dec (AvARRAY (padlist)[0]);
549
550 AvFILLp (padlist) = -1;
369 SvREFCNT_dec ((SV*)padlist); 551 SvREFCNT_dec ((SV*)padlist);
370 } 552 }
371} 553}
372 554
373static int 555static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 556coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 557{
376 AV *padlist; 558 AV *padlist;
377 AV *av = (AV *)mg->mg_obj; 559 AV *av = (AV *)mg->mg_obj;
560
561 /* perl manages to free our internal AV and _then_ call us */
562 if (IN_DESTRUCT)
563 return 0;
378 564
379 /* casting is fun. */ 565 /* casting is fun. */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 566 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
381 free_padlist (aTHX_ padlist); 567 free_padlist (aTHX_ padlist);
382 568
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 569 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 570
385 return 0; 571 return 0;
386} 572}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 573
391static MGVTBL coro_cv_vtbl = { 574static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 575 0, 0, 0, 0,
393 coro_cv_free 576 coro_cv_free
394}; 577};
395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438 578
439/* the next two functions merely cache the padlists */ 579/* the next two functions merely cache the padlists */
440static void 580static void
441get_padlist (pTHX_ CV *cv) 581get_padlist (pTHX_ CV *cv)
442{ 582{
… …
448 else 588 else
449 { 589 {
450#if CORO_PREFER_PERL_FUNCTIONS 590#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 591 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 592 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 593 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 594 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 595 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 596 SvREFCNT_dec (cp);
457#else 597#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 598 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 599#endif
460 } 600 }
461} 601}
462 602
463static void 603static void
… …
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 610 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 611
472 av = (AV *)mg->mg_obj; 612 av = (AV *)mg->mg_obj;
473 613
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 614 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 615 av_extend (av, AvFILLp (av) + 1);
476 616
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 617 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 618}
479 619
480/** load & save, init *******************************************************/ 620/** load & save, init *******************************************************/
621
622/* swap sv heads, at least logically */
623static void
624swap_svs (pTHX_ Coro__State c)
625{
626 int i;
627
628 for (i = 0; i <= AvFILLp (c->swap_sv); )
629 {
630 SV *a = AvARRAY (c->swap_sv)[i++];
631 SV *b = AvARRAY (c->swap_sv)[i++];
632
633 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
634 SV tmp;
635
636 /* swap sv_any */
637 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
638
639 /* swap sv_flags */
640 SvFLAGS (&tmp) = SvFLAGS (a);
641 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
642 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
643
644#if PERL_VERSION_ATLEAST (5,10,0)
645 /* perl 5.10 complicates this _quite_ a bit, but it also is
646 * much faster, so no quarrels here. alternatively, we could
647 * sv_upgrade to avoid this.
648 */
649 {
650 /* swap sv_u */
651 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
652
653 /* if SvANY points to the head, we need to adjust the pointers,
654 * as the pointer for a still points to b, and maybe vice versa.
655 */
656 #define svany_in_head(type) \
657 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
658
659 if (svany_in_head (SvTYPE (a)))
660 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
661
662 if (svany_in_head (SvTYPE (b)))
663 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
664 }
665#endif
666 }
667}
668
669#define SWAP_SVS(coro) \
670 if (expect_false ((coro)->swap_sv)) \
671 swap_svs (aTHX_ (coro))
672
673static void
674on_enterleave_call (pTHX_ SV *cb);
481 675
482static void 676static void
483load_perl (pTHX_ Coro__State c) 677load_perl (pTHX_ Coro__State c)
484{ 678{
485 perl_slots *slot = c->slot; 679 perl_slots *slot = c->slot;
486 c->slot = 0; 680 c->slot = 0;
487 681
488 PL_mainstack = c->mainstack; 682 PL_mainstack = c->mainstack;
489 683
490 GvSV (PL_defgv) = slot->defsv; 684 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav; 685 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv; 686 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv; 687 GvSV (irsgv) = slot->irsgv;
688 GvHV (PL_hintgv) = slot->hinthv;
494 689
495 #define VAR(name,type) PL_ ## name = slot->name; 690 #define VAR(name,type) PL_ ## name = slot->name;
496 # include "state.h" 691 # include "state.h"
497 #undef VAR 692 #undef VAR
498 693
… …
512 PUTBACK; 707 PUTBACK;
513 } 708 }
514 709
515 slf_frame = c->slf_frame; 710 slf_frame = c->slf_frame;
516 CORO_THROW = c->except; 711 CORO_THROW = c->except;
712
713 if (expect_false (enable_times))
714 {
715 if (expect_false (!times_valid))
716 coro_times_update ();
717
718 coro_times_sub (c);
719 }
720
721 if (expect_false (c->on_enter))
722 {
723 int i;
724
725 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
726 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
727 }
728
729 SWAP_SVS (c);
517} 730}
518 731
519static void 732static void
520save_perl (pTHX_ Coro__State c) 733save_perl (pTHX_ Coro__State c)
521{ 734{
735 SWAP_SVS (c);
736
737 if (expect_false (c->on_leave))
738 {
739 int i;
740
741 for (i = AvFILLp (c->on_leave); i >= 0; --i)
742 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
743 }
744
745 times_valid = 0;
746
747 if (expect_false (enable_times))
748 {
749 coro_times_update (); times_valid = 1;
750 coro_times_add (c);
751 }
752
522 c->except = CORO_THROW; 753 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 754 c->slf_frame = slf_frame;
524 755
525 { 756 {
526 dSP; 757 dSP;
… …
539 { 770 {
540 while (expect_true (cxix >= 0)) 771 while (expect_true (cxix >= 0))
541 { 772 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 773 PERL_CONTEXT *cx = &ccstk[cxix--];
543 774
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 775 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 776 {
546 CV *cv = cx->blk_sub.cv; 777 CV *cv = cx->blk_sub.cv;
547 778
548 if (expect_true (CvDEPTH (cv))) 779 if (expect_true (CvDEPTH (cv)))
549 { 780 {
… …
568 799
569 PUTBACK; 800 PUTBACK;
570 } 801 }
571 802
572 /* allocate some space on the context stack for our purposes */ 803 /* allocate some space on the context stack for our purposes */
573 /* we manually unroll here, as usually 2 slots is enough */ 804 if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
574 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC;
577 { 805 {
578 int i; 806 unsigned int i;
807
579 for (i = 3; i < SLOT_COUNT; ++i) 808 for (i = 0; i < SLOT_COUNT; ++i)
580 CXINC; 809 CXINC;
581 } 810
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 811 cxstack_ix -= SLOT_COUNT; /* undo allocation */
812 }
583 813
584 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
585 815
586 { 816 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 818
589 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
590 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
591 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
592 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
593 824
594 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
595 # include "state.h" 826 # include "state.h"
596 #undef VAR 827 #undef VAR
597 } 828 }
… …
602 * of perl.c:init_stacks, except that it uses less memory 833 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 834 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 835 * not usually need a lot of stackspace.
605 */ 836 */
606#if CORO_PREFER_PERL_FUNCTIONS 837#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 838# define coro_init_stacks(thx) init_stacks ()
608#else 839#else
609static void 840static void
610coro_init_stacks (pTHX) 841coro_init_stacks (pTHX)
611{ 842{
612 PL_curstackinfo = new_stackinfo(32, 8); 843 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
613 PL_curstackinfo->si_type = PERLSI_MAIN; 844 PL_curstackinfo->si_type = PERLSI_MAIN;
614 PL_curstack = PL_curstackinfo->si_stack; 845 PL_curstack = PL_curstackinfo->si_stack;
615 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 846 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
616 847
617 PL_stack_base = AvARRAY(PL_curstack); 848 PL_stack_base = AvARRAY(PL_curstack);
… …
675#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 907 Safefree (PL_retstack);
677#endif 908#endif
678} 909}
679 910
911#define CORO_RSS \
912 rss += sizeof (SYM (curstackinfo)); \
913 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
914 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
915 rss += SYM (tmps_max) * sizeof (SV *); \
916 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
917 rss += SYM (scopestack_max) * sizeof (I32); \
918 rss += SYM (savestack_max) * sizeof (ANY);
919
680static size_t 920static size_t
681coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
682{ 922{
683 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
684 924
685 if (coro->mainstack) 925 if (coro->mainstack)
686 { 926 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
691 { 928 {
692 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
693 930 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 931 #undef SYM
697 } 932 }
698 else 933 else
699 slot = coro->slot;
700
701 if (slot)
702 { 934 {
703 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 938 }
715 } 939 }
716 940
717 return rss; 941 return rss;
718} 942}
… …
731#endif 955#endif
732 956
733/* 957/*
734 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 959 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 960 * and instead of trying to save and restore the hash elements, we just provide
737 * readback here. 961 * readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 962 */
742static int 963static int
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 965{
745 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 1020
800 if (svp) 1021 if (svp)
801 { 1022 {
802 SV *old = *svp; 1023 SV *old = *svp;
803 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
805 return 0; 1026 return 0;
806 } 1027 }
807 } 1028 }
808 1029
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 1042{
822 return 0; 1043 return 0;
823} 1044}
824 1045
825static UNOP coro_setup_op; 1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
826 1053
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
829{ 1056{
830 /* 1057 /*
831 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
832 */ 1059 */
833 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
834 1061
835 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1069 PL_curpm = 0;
840 PL_curpad = 0; 1070 PL_curpad = 0;
841 PL_localizing = 0; 1071 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1072 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1074 PL_parser = 0;
846#endif 1075#endif
1076 PL_hints = 0;
847 1077
848 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 1081
852 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1086 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1089
859 { 1090 {
860 dSP; 1091 dSP;
861 UNOP myop; 1092 UNOP myop;
862 1093
863 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
866 1098
867 PUSHMARK (SP); 1099 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1101 PUTBACK;
870 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1104 }
874 1105
875 /* this newly created coroutine might be run on an existing cctx which most 1106 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1107 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1108 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1110 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880 1111
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1113 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1114 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1115 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1116 /* no flags etc. required, as an init function won't be called */
886 1117
887 PL_op = (OP *)&coro_setup_op; 1118 PL_op = (OP *)&init_perl_op;
888 1119
889 /* copy throw, in case it was set before coro_setup */ 1120 /* copy throw, in case it was set before init_perl */
890 CORO_THROW = coro->except; 1121 CORO_THROW = coro->except;
891}
892 1122
1123 SWAP_SVS (coro);
1124
1125 if (expect_false (enable_times))
1126 {
1127 coro_times_update ();
1128 coro_times_sub (coro);
1129 }
1130}
1131
893static void 1132static void
894coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
895{ 1134{
896 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
897 { 1136 {
898 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
908 1147
909 /* unwind main stack */ 1148 /* unwind main stack */
910 dounwind (-1); 1149 dounwind (-1);
911 } 1150 }
1151}
912 1152
913 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
916 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1157
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1158 {
1159 SV *old_current = SvRV (coro_current);
1160 struct coro *current = SvSTATE (old_current);
1161
1162 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1163
1164 save_perl (aTHX_ current);
1165
1166 /* this will cause transfer_check to croak on block*/
1167 SvRV_set (coro_current, (SV *)coro->hv);
1168
1169 load_perl (aTHX_ coro);
1170
1171 coro_unwind_stacks (aTHX);
1172 coro_destruct_stacks (aTHX);
1173
1174 /* restore swapped sv's */
1175 SWAP_SVS (coro);
1176
1177 // now save some sv's to be free'd later
1178 svf [0] = GvSV (PL_defgv);
1179 svf [1] = (SV *)GvAV (PL_defgv);
1180 svf [2] = GvSV (PL_errgv);
1181 svf [3] = (SV *)PL_defoutgv;
1182 svf [4] = PL_rs;
1183 svf [5] = GvSV (irsgv);
1184 svf [6] = (SV *)GvHV (PL_hintgv);
1185 svf [7] = PL_diehook;
1186 svf [8] = PL_warnhook;
1187 assert (9 == sizeof (svf) / sizeof (*svf));
1188
1189 SvRV_set (coro_current, old_current);
1190
1191 load_perl (aTHX_ current);
1192 }
1193
1194 {
1195 unsigned int i;
1196
1197 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1198 SvREFCNT_dec (svf [i]);
1199
923 SvREFCNT_dec (coro->saved_deffh); 1200 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (CORO_THROW); 1201 SvREFCNT_dec (coro->rouse_cb);
925 1202 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1203 SvREFCNT_dec (coro->invoke_av);
1204 }
927} 1205}
928 1206
929INLINE void 1207INLINE void
930free_coro_mortal (pTHX) 1208free_coro_mortal (pTHX)
931{ 1209{
… …
939static int 1217static int
940runops_trace (pTHX) 1218runops_trace (pTHX)
941{ 1219{
942 COP *oldcop = 0; 1220 COP *oldcop = 0;
943 int oldcxix = -2; 1221 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1222
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1223 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1224 {
949 PERL_ASYNC_CHECK (); 1225 PERL_ASYNC_CHECK ();
950 1226
951 if (cctx->flags & CC_TRACE_ALL) 1227 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1228 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1229 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1230 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1231 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1232 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1233 AV *av = newAV (); /* return values */
958 SV **cb; 1234 SV **cb;
… …
995 1271
996 if (PL_curcop != &PL_compiling) 1272 if (PL_curcop != &PL_compiling)
997 { 1273 {
998 SV **cb; 1274 SV **cb;
999 1275
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1276 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1277 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1278 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1279
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1280 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1281 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1282 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1283 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1284 SV *fullname = sv_2mortal (newSV (0));
1010 1285
1011 if (isGV (gv)) 1286 if (isGV (gv))
… …
1016 SAVETMPS; 1291 SAVETMPS;
1017 EXTEND (SP, 3); 1292 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1293 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1294 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1295 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1296 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1297 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1298 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1299 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1300 SPAGAIN;
1026 FREETMPS; 1301 FREETMPS;
… …
1029 } 1304 }
1030 1305
1031 oldcxix = cxstack_ix; 1306 oldcxix = cxstack_ix;
1032 } 1307 }
1033 1308
1034 if (cctx->flags & CC_TRACE_LINE) 1309 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1310 {
1036 dSP; 1311 dSP;
1037 1312
1038 PL_runops = RUNOPS_DEFAULT; 1313 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1314 ENTER;
… …
1058 1333
1059 TAINT_NOT; 1334 TAINT_NOT;
1060 return 0; 1335 return 0;
1061} 1336}
1062 1337
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1338static struct CoroSLF cctx_ssl_frame;
1065 1339
1066static void 1340static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1341slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1342{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1343 ta->prev = 0;
1071} 1344}
1072 1345
1073static int 1346static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1347slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1348{
… …
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1351 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1352}
1080 1353
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1354/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1355static void NOINLINE
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1356cctx_prepare (pTHX)
1084{ 1357{
1085 PL_top_env = &PL_start_env; 1358 PL_top_env = &PL_start_env;
1086 1359
1087 if (cctx->flags & CC_TRACE) 1360 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1361 PL_runops = runops_trace;
1089 1362
1090 /* we already must be executing an SLF op, there is no other valid way 1363 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1364 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1365 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1366 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1367
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1368 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1369 cctx_ssl_frame = slf_frame;
1098 1370
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1371 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1372 slf_frame.check = slf_check_set_stacklevel;
1101} 1373}
… …
1124 /* normally we would need to skip the entersub here */ 1396 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1397 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1398 /* PL_nop = PL_nop->op_next */
1127 1399
1128 /* inject a fake subroutine call to cctx_init */ 1400 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1401 cctx_prepare (aTHX);
1130 1402
1131 /* cctx_run is the alternative tail of transfer() */ 1403 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1404 transfer_tail (aTHX);
1133 1405
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1406 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1407 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1408 perl_run (PL_curinterp);
1409 /*
1410 * Unfortunately, there is no way to get at the return values of the
1411 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1412 * runtime errors here, as this is just a random interpreter, not a thread.
1413 */
1137 1414
1138 /* 1415 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1416 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1417 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1418 * reason for perl_run to return. We try to exit by jumping to the
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1419 * bootstrap-time "top" top_env, as we cannot restore the "main"
1143 * coroutine as Coro has no such concept 1420 * coroutine as Coro has no such concept.
1421 * This actually isn't valid with the pthread backend, but OSes requiring
1422 * that backend are too broken to do it in a standards-compliant way.
1144 */ 1423 */
1145 PL_top_env = main_top_env; 1424 PL_top_env = main_top_env;
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1425 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1426 }
1148} 1427}
… …
1225cctx_destroy (coro_cctx *cctx) 1504cctx_destroy (coro_cctx *cctx)
1226{ 1505{
1227 if (!cctx) 1506 if (!cctx)
1228 return; 1507 return;
1229 1508
1509 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1510
1230 --cctx_count; 1511 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1512 coro_destroy (&cctx->cctx);
1232 1513
1233 /* coro_transfer creates new, empty cctx's */ 1514 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr) 1515 if (cctx->sptr)
… …
1297 /* TODO: throwing up here is considered harmful */ 1578 /* TODO: throwing up here is considered harmful */
1298 1579
1299 if (expect_true (prev != next)) 1580 if (expect_true (prev != next))
1300 { 1581 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1582 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1583 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1584
1304 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED)) 1585 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1586 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1587
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1588#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1589 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1590 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1591#endif
… …
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1597transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1598{
1321 dSTACKLEVEL; 1599 dSTACKLEVEL;
1322 1600
1323 /* sometimes transfer is only called to set idle_sp */ 1601 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1602 if (expect_false (!prev))
1325 { 1603 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1604 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1605 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1606 }
1329 else if (expect_true (prev != next)) 1607 else if (expect_true (prev != next))
1330 { 1608 {
1331 coro_cctx *prev__cctx; 1609 coro_cctx *cctx_prev;
1332 1610
1333 if (expect_false (prev->flags & CF_NEW)) 1611 if (expect_false (prev->flags & CF_NEW))
1334 { 1612 {
1335 /* create a new empty/source context */ 1613 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1614 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1615 prev->flags |= CF_RUNNING;
1339 } 1616 }
1340 1617
1341 prev->flags &= ~CF_RUNNING; 1618 prev->flags &= ~CF_RUNNING;
… …
1347 if (expect_false (next->flags & CF_NEW)) 1624 if (expect_false (next->flags & CF_NEW))
1348 { 1625 {
1349 /* need to start coroutine */ 1626 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1627 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1628 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1629 init_perl (aTHX_ next);
1353 } 1630 }
1354 else 1631 else
1355 load_perl (aTHX_ next); 1632 load_perl (aTHX_ next);
1356 1633
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1634 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1635 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1636 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1637 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1638 && !force_cctx
1364 )) 1639 ))
1365 { 1640 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1641 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1642 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1643
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1644 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1645 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1646 if (expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1647 if (expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1648 next->cctx = cctx_get (aTHX);
1376 1649
1377 cctx_put (prev__cctx); 1650 cctx_put (cctx_current);
1378 } 1651 }
1652 else
1653 prev->cctx = cctx_current;
1379 1654
1380 ++next->usecount; 1655 ++next->usecount;
1381 1656
1382 if (expect_true (!next->cctx)) 1657 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1658 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1659
1385 if (expect_false (prev__cctx != next->cctx)) 1660 next->cctx = 0;
1661
1662 if (expect_false (cctx_prev != cctx_current))
1386 { 1663 {
1387 prev__cctx->top_env = PL_top_env; 1664 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1665 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1666 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1667 }
1391 1668
1392 transfer_tail (aTHX); 1669 transfer_tail (aTHX);
1393 } 1670 }
1394} 1671}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1673#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1674#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1675
1399/** high level stuff ********************************************************/ 1676/** high level stuff ********************************************************/
1400 1677
1401static int 1678static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1680{
1404 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_DESTROYED)
1405 return 0; 1682 return;
1406 1683
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1684 slf_destroy (aTHX_ coro);
1409 1685
1410 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_DESTROYED;
1411 1687
1412 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1413 { 1689 {
… …
1416 --coro_nready; 1692 --coro_nready;
1417 } 1693 }
1418 else 1694 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1696
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1697 if (coro->mainstack
1422 { 1698 && coro->mainstack != main_mainstack
1423 struct coro temp; 1699 && coro->slot
1424 1700 && !PL_dirty)
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1701 destroy_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439 1702
1440 if (coro->next) coro->next->prev = coro->prev; 1703 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1704 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1705 if (coro == coro_first) coro_first = coro->next;
1443 1706
1444 return 1; 1707 cctx_destroy (coro->cctx);
1708 SvREFCNT_dec (coro->startcv);
1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1711 SvREFCNT_dec (CORO_THROW);
1445} 1712}
1446 1713
1447static int 1714static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1715coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1716{
… …
1502/** Coro ********************************************************************/ 1769/** Coro ********************************************************************/
1503 1770
1504INLINE void 1771INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1772coro_enq (pTHX_ struct coro *coro)
1506{ 1773{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1774 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1775
1510INLINE SV * 1776 SvREFCNT_inc_NN (coro->hv);
1777
1778 coro->next_ready = 0;
1779 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1780 ready [1] = coro;
1781}
1782
1783INLINE struct coro *
1511coro_deq (pTHX) 1784coro_deq (pTHX)
1512{ 1785{
1513 int prio; 1786 int prio;
1514 1787
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1788 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1789 {
1517 return av_shift (coro_ready [prio]); 1790 struct coro **ready = coro_ready [prio];
1791
1792 if (ready [0])
1793 {
1794 struct coro *coro = ready [0];
1795 ready [0] = coro->next_ready;
1796 return coro;
1797 }
1798 }
1518 1799
1519 return 0; 1800 return 0;
1801}
1802
1803static void
1804invoke_sv_ready_hook_helper (void)
1805{
1806 dTHX;
1807 dSP;
1808
1809 ENTER;
1810 SAVETMPS;
1811
1812 PUSHMARK (SP);
1813 PUTBACK;
1814 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1815
1816 FREETMPS;
1817 LEAVE;
1520} 1818}
1521 1819
1522static int 1820static int
1523api_ready (pTHX_ SV *coro_sv) 1821api_ready (pTHX_ SV *coro_sv)
1524{ 1822{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1533 1824
1534 if (coro->flags & CF_READY) 1825 if (coro->flags & CF_READY)
1535 return 0; 1826 return 0;
1536 1827
1537 coro->flags |= CF_READY; 1828 coro->flags |= CF_READY;
1538 1829
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1830 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1831
1545 if (sv_hook) 1832 if (!coro_nready++)
1546 { 1833 if (coroapi.readyhook)
1547 dSP; 1834 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1835
1563 return 1; 1836 return 1;
1564} 1837}
1565 1838
1566static int 1839static int
1567api_is_ready (pTHX_ SV *coro_sv) 1840api_is_ready (pTHX_ SV *coro_sv)
1568{ 1841{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1842 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1843}
1571 1844
1845/* expects to own a reference to next->hv */
1572INLINE void 1846INLINE void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1847prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1848{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1849 SV *prev_sv = SvRV (coro_current);
1850
1614 ta->prev = SvSTATE_hv (prev_sv); 1851 ta->prev = SvSTATE_hv (prev_sv);
1852 ta->next = next;
1853
1615 TRANSFER_CHECK (*ta); 1854 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1855
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1856 SvRV_set (coro_current, (SV *)next->hv);
1619 1857
1620 free_coro_mortal (aTHX); 1858 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1859 coro_mortal = prev_sv;
1622} 1860}
1623 1861
1862static void
1863prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1864{
1865 for (;;)
1866 {
1867 struct coro *next = coro_deq (aTHX);
1868
1869 if (expect_true (next))
1870 {
1871 /* cannot transfer to destroyed coros, skip and look for next */
1872 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1873 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1874 else
1875 {
1876 next->flags &= ~CF_READY;
1877 --coro_nready;
1878
1879 prepare_schedule_to (aTHX_ ta, next);
1880 break;
1881 }
1882 }
1883 else
1884 {
1885 /* nothing to schedule: call the idle handler */
1886 if (SvROK (sv_idle)
1887 && SvOBJECT (SvRV (sv_idle)))
1888 {
1889 if (SvRV (sv_idle) == SvRV (coro_current))
1890 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1891
1892 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1893 api_ready (aTHX_ SvRV (sv_idle));
1894 --coro_nready;
1895 }
1896 else
1897 {
1898 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1899 dSP;
1900
1901 ENTER;
1902 SAVETMPS;
1903
1904 PUSHMARK (SP);
1905 PUTBACK;
1906 call_sv (sv_idle, G_VOID | G_DISCARD);
1907
1908 FREETMPS;
1909 LEAVE;
1910 }
1911 }
1912 }
1913}
1914
1624INLINE void 1915INLINE void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1916prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1917{
1627 api_ready (aTHX_ coro_current); 1918 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1919 prepare_schedule (aTHX_ ta);
… …
1647{ 1938{
1648 struct coro_transfer_args ta; 1939 struct coro_transfer_args ta;
1649 1940
1650 prepare_schedule (aTHX_ &ta); 1941 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1942 TRANSFER (ta, 1);
1943}
1944
1945static void
1946api_schedule_to (pTHX_ SV *coro_sv)
1947{
1948 struct coro_transfer_args ta;
1949 struct coro *next = SvSTATE (coro_sv);
1950
1951 SvREFCNT_inc_NN (coro_sv);
1952 prepare_schedule_to (aTHX_ &ta, next);
1652} 1953}
1653 1954
1654static int 1955static int
1655api_cede (pTHX) 1956api_cede (pTHX)
1656{ 1957{
… …
1685static void 1986static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 1987api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 1988{
1688 struct coro *coro = SvSTATE (coro_sv); 1989 struct coro *coro = SvSTATE (coro_sv);
1689 1990
1991 if (coro->flags & CF_RUNNING)
1992 croak ("cannot enable tracing on a running coroutine, caught");
1993
1690 if (flags & CC_TRACE) 1994 if (flags & CC_TRACE)
1691 { 1995 {
1692 if (!coro->cctx) 1996 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 1997 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 1998 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 1999 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 2000
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2001 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 2002 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2003 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 2004 {
… …
1703 if (coro->flags & CF_RUNNING) 2007 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 2008 PL_runops = RUNOPS_DEFAULT;
1705 else 2009 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 2010 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 2011 }
2012}
2013
2014static void
2015coro_call_on_destroy (pTHX_ struct coro *coro)
2016{
2017 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2018
2019 if (on_destroyp)
2020 {
2021 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2022 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2023 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2024
2025 while (AvFILLp (on_destroy) >= 0)
2026 {
2027 dSP; /* don't disturb outer sp */
2028 SV *cb = av_pop (on_destroy);
2029
2030 PUSHMARK (SP);
2031
2032 if (statusp)
2033 {
2034 int i;
2035 EXTEND (SP, AvFILLp (status) + 1);
2036
2037 for (i = 0; i <= AvFILLp (status); ++i)
2038 PUSHs (AvARRAY (status)[i]);
2039 }
2040
2041 PUTBACK;
2042 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2043 }
2044 }
2045}
2046
2047static void
2048coro_set_status (pTHX_ HV *coro_hv, SV **arg, int items)
2049{
2050 AV *av = newAV ();
2051
2052 /* items are actually not so common, so optimise for this case */
2053 if (items)
2054 {
2055 int i;
2056
2057 av_extend (av, items - 1);
2058
2059 for (i = 0; i < items; ++i)
2060 av_push (av, SvREFCNT_inc_NN (arg [i]));
2061 }
2062
2063 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2064}
2065
2066static void
2067slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2068{
2069 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2070 api_ready (aTHX_ sv_manager);
2071
2072 frame->prepare = prepare_schedule;
2073 frame->check = slf_check_repeat;
2074
2075 /* as a minor optimisation, we could unwind all stacks here */
2076 /* but that puts extra pressure on pp_slf, and is not worth much */
2077 /*coro_unwind_stacks (aTHX);*/
2078}
2079
2080static void
2081slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2082{
2083 HV *coro_hv = (HV *)SvRV (coro_current);
2084
2085 coro_set_status (aTHX_ coro_hv, arg, items);
2086 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2087}
2088
2089static void
2090slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 HV *coro_hv;
2093 struct coro *coro;
2094
2095 if (items <= 0)
2096 croak ("Coro::cancel called without coro object,");
2097
2098 coro = SvSTATE (arg [0]);
2099 coro_hv = coro->hv;
2100
2101 coro_set_status (aTHX_ coro_hv, arg + 1, items - 1);
2102
2103 if (expect_false (coro->flags & CF_NOCANCEL))
2104 {
2105 /* coro currently busy cancelling something, so just notify it */
2106 coro->slf_frame.data = (void *)coro;
2107
2108 frame->prepare = prepare_nop;
2109 frame->check = slf_check_nop;
2110 }
2111 else if (coro_hv == (HV *)SvRV (coro_current))
2112 {
2113 /* cancelling the current coro is allowed, and equals terminate */
2114 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2115 }
2116 else
2117 {
2118 struct coro *self = SvSTATE_current;
2119
2120 /* otherwise we cancel directly, purely for speed reasons
2121 * unfortunately, this requires some magic trickery, as
2122 * somebody else could cancel us, so we have to fight the cancellation.
2123 * this is ugly, and hopefully fully worth the extra speed.
2124 * besides, I can't get the slow-but-safe version working...
2125 */
2126 slf_frame.data = 0;
2127 self->flags |= CF_NOCANCEL;
2128
2129 coro_state_destroy (aTHX_ coro);
2130 coro_call_on_destroy (aTHX_ coro);
2131
2132 self->flags &= ~CF_NOCANCEL;
2133
2134 if (slf_frame.data)
2135 {
2136 /* while we were busy we have been cancelled, so terminate */
2137 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2138 }
2139 else
2140 {
2141 frame->prepare = prepare_nop;
2142 frame->check = slf_check_nop;
2143 }
2144 }
2145}
2146
2147static int
2148slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2149{
2150 frame->prepare = 0;
2151 coro_unwind_stacks (aTHX);
2152
2153 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2154
2155 return 1;
2156}
2157
2158static int
2159safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2160{
2161 if (coro->cctx)
2162 croak ("coro inside C callback, unable to cancel at this time, caught");
2163
2164 if (coro->flags & CF_NEW)
2165 {
2166 coro_set_status (aTHX_ coro->hv, arg, items);
2167 coro_state_destroy (aTHX_ coro);
2168 coro_call_on_destroy (aTHX_ coro);
2169 }
2170 else
2171 {
2172 if (!coro->slf_frame.prepare)
2173 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2174
2175 slf_destroy (aTHX_ coro);
2176
2177 coro_set_status (aTHX_ coro->hv, arg, items);
2178 coro->slf_frame.prepare = prepare_nop;
2179 coro->slf_frame.check = slf_check_safe_cancel;
2180
2181 api_ready (aTHX_ coro->hv);
2182 }
2183
2184 return 1;
2185}
2186
2187/*****************************************************************************/
2188/* async pool handler */
2189
2190static int
2191slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2192{
2193 HV *hv = (HV *)SvRV (coro_current);
2194 struct coro *coro = (struct coro *)frame->data;
2195
2196 if (!coro->invoke_cb)
2197 return 1; /* loop till we have invoke */
2198 else
2199 {
2200 hv_store (hv, "desc", sizeof ("desc") - 1,
2201 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2202
2203 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2204
2205 {
2206 dSP;
2207 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2208 PUTBACK;
2209 }
2210
2211 SvREFCNT_dec (GvAV (PL_defgv));
2212 GvAV (PL_defgv) = coro->invoke_av;
2213 coro->invoke_av = 0;
2214
2215 return 0;
2216 }
2217}
2218
2219static void
2220slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *hv = (HV *)SvRV (coro_current);
2223 struct coro *coro = SvSTATE_hv ((SV *)hv);
2224
2225 if (expect_true (coro->saved_deffh))
2226 {
2227 /* subsequent iteration */
2228 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2229 coro->saved_deffh = 0;
2230
2231 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2232 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2233 {
2234 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2235 return;
2236 }
2237 else
2238 {
2239 av_clear (GvAV (PL_defgv));
2240 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2241
2242 coro->prio = 0;
2243
2244 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2245 api_trace (aTHX_ coro_current, 0);
2246
2247 frame->prepare = prepare_schedule;
2248 av_push (av_async_pool, SvREFCNT_inc (hv));
2249 }
2250 }
2251 else
2252 {
2253 /* first iteration, simply fall through */
2254 frame->prepare = prepare_nop;
2255 }
2256
2257 frame->check = slf_check_pool_handler;
2258 frame->data = (void *)coro;
2259}
2260
2261/*****************************************************************************/
2262/* rouse callback */
2263
2264#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2265
2266static void
2267coro_rouse_callback (pTHX_ CV *cv)
2268{
2269 dXSARGS;
2270 SV *data = (SV *)S_GENSUB_ARG;
2271
2272 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2273 {
2274 /* first call, set args */
2275 SV *coro = SvRV (data);
2276 AV *av = newAV ();
2277
2278 SvRV_set (data, (SV *)av);
2279
2280 /* better take a full copy of the arguments */
2281 while (items--)
2282 av_store (av, items, newSVsv (ST (items)));
2283
2284 api_ready (aTHX_ coro);
2285 SvREFCNT_dec (coro);
2286 }
2287
2288 XSRETURN_EMPTY;
2289}
2290
2291static int
2292slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2293{
2294 SV *data = (SV *)frame->data;
2295
2296 if (CORO_THROW)
2297 return 0;
2298
2299 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2300 return 1;
2301
2302 /* now push all results on the stack */
2303 {
2304 dSP;
2305 AV *av = (AV *)SvRV (data);
2306 int i;
2307
2308 EXTEND (SP, AvFILLp (av) + 1);
2309 for (i = 0; i <= AvFILLp (av); ++i)
2310 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2311
2312 /* we have stolen the elements, so set length to zero and free */
2313 AvFILLp (av) = -1;
2314 av_undef (av);
2315
2316 PUTBACK;
2317 }
2318
2319 return 0;
2320}
2321
2322static void
2323slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 SV *cb;
2326
2327 if (items)
2328 cb = arg [0];
2329 else
2330 {
2331 struct coro *coro = SvSTATE_current;
2332
2333 if (!coro->rouse_cb)
2334 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2335
2336 cb = sv_2mortal (coro->rouse_cb);
2337 coro->rouse_cb = 0;
2338 }
2339
2340 if (!SvROK (cb)
2341 || SvTYPE (SvRV (cb)) != SVt_PVCV
2342 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2343 croak ("Coro::rouse_wait called with illegal callback argument,");
2344
2345 {
2346 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2347 SV *data = (SV *)S_GENSUB_ARG;
2348
2349 frame->data = (void *)data;
2350 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2351 frame->check = slf_check_rouse_wait;
2352 }
2353}
2354
2355static SV *
2356coro_new_rouse_cb (pTHX)
2357{
2358 HV *hv = (HV *)SvRV (coro_current);
2359 struct coro *coro = SvSTATE_hv (hv);
2360 SV *data = newRV_inc ((SV *)hv);
2361 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2362
2363 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2364 SvREFCNT_dec (data); /* magicext increases the refcount */
2365
2366 SvREFCNT_dec (coro->rouse_cb);
2367 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2368
2369 return cb;
1708} 2370}
1709 2371
1710/*****************************************************************************/ 2372/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2373/* schedule-like-function opcode (SLF) */
1712 2374
… …
1762 frame->prepare = prepare_schedule; 2424 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2425 frame->check = slf_check_nop;
1764} 2426}
1765 2427
1766static void 2428static void
2429slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2430{
2431 struct coro *next = (struct coro *)slf_frame.data;
2432
2433 SvREFCNT_inc_NN (next->hv);
2434 prepare_schedule_to (aTHX_ ta, next);
2435}
2436
2437static void
2438slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2439{
2440 if (!items)
2441 croak ("Coro::schedule_to expects a coroutine argument, caught");
2442
2443 frame->data = (void *)SvSTATE (arg [0]);
2444 frame->prepare = slf_prepare_schedule_to;
2445 frame->check = slf_check_nop;
2446}
2447
2448static void
2449slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2450{
2451 api_ready (aTHX_ SvRV (coro_current));
2452
2453 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2454}
2455
2456static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2457slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2458{
1769 frame->prepare = prepare_cede; 2459 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop; 2460 frame->check = slf_check_nop;
1771} 2461}
… …
1773static void 2463static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2464slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{ 2465{
1776 frame->prepare = prepare_cede_notself; 2466 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop; 2467 frame->check = slf_check_nop;
2468}
2469
2470/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2471static void
2472slf_destroy (pTHX_ struct coro *coro)
2473{
2474 /* this callback is reserved for slf functions needing to do cleanup */
2475 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2476 coro->slf_frame.destroy (aTHX_ coro);
2477
2478 /*
2479 * The on_destroy above most likely is from an SLF call.
2480 * Since by definition the SLF call will not finish when we destroy
2481 * the coro, we will have to force-finish it here, otherwise
2482 * cleanup functions cannot call SLF functions.
2483 */
2484 coro->slf_frame.prepare = 0;
1778} 2485}
1779 2486
1780/* 2487/*
1781 * these not obviously related functions are all rolled into one 2488 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2489 * function to increase chances that they all will call transfer with the same
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2608 if (PL_op->op_flags & OPf_STACKED)
1902 { 2609 {
1903 if (items > slf_arga) 2610 if (items > slf_arga)
1904 { 2611 {
1905 slf_arga = items; 2612 slf_arga = items;
1906 free (slf_argv); 2613 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2614 New (0, slf_argv, slf_arga, SV *);
1908 } 2615 }
1909 2616
1910 slf_argc = items; 2617 slf_argc = items;
1911 2618
1912 for (i = 0; i < items; ++i) 2619 for (i = 0; i < items; ++i)
… …
1914 } 2621 }
1915 else 2622 else
1916 slf_argc = 0; 2623 slf_argc = 0;
1917 2624
1918 PL_op->op_ppaddr = pp_slf; 2625 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2626 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2627
1921 PL_op = (OP *)&slf_restore; 2628 PL_op = (OP *)&slf_restore;
2629}
2630
2631/*****************************************************************************/
2632/* dynamic wind */
2633
2634static void
2635on_enterleave_call (pTHX_ SV *cb)
2636{
2637 dSP;
2638
2639 PUSHSTACK;
2640
2641 PUSHMARK (SP);
2642 PUTBACK;
2643 call_sv (cb, G_VOID | G_DISCARD);
2644 SPAGAIN;
2645
2646 POPSTACK;
2647}
2648
2649static SV *
2650coro_avp_pop_and_free (pTHX_ AV **avp)
2651{
2652 AV *av = *avp;
2653 SV *res = av_pop (av);
2654
2655 if (AvFILLp (av) < 0)
2656 {
2657 *avp = 0;
2658 SvREFCNT_dec (av);
2659 }
2660
2661 return res;
2662}
2663
2664static void
2665coro_pop_on_enter (pTHX_ void *coro)
2666{
2667 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2668 SvREFCNT_dec (cb);
2669}
2670
2671static void
2672coro_pop_on_leave (pTHX_ void *coro)
2673{
2674 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2675 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2676}
1923 2677
1924/*****************************************************************************/ 2678/*****************************************************************************/
1925/* PerlIO::cede */ 2679/* PerlIO::cede */
1926 2680
… …
1995 PerlIOBuf_get_cnt, 2749 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2750 PerlIOBuf_set_ptrcnt,
1997}; 2751};
1998 2752
1999/*****************************************************************************/ 2753/*****************************************************************************/
2754/* Coro::Semaphore & Coro::Signal */
2755
2756static SV *
2757coro_waitarray_new (pTHX_ int count)
2758{
2759 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2760 AV *av = newAV ();
2761 SV **ary;
2762
2763 /* unfortunately, building manually saves memory */
2764 Newx (ary, 2, SV *);
2765 AvALLOC (av) = ary;
2766#if PERL_VERSION_ATLEAST (5,10,0)
2767 AvARRAY (av) = ary;
2768#else
2769 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2770 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2771 SvPVX ((SV *)av) = (char *)ary;
2772#endif
2773 AvMAX (av) = 1;
2774 AvFILLp (av) = 0;
2775 ary [0] = newSViv (count);
2776
2777 return newRV_noinc ((SV *)av);
2778}
2779
2000/* Coro::Semaphore */ 2780/* semaphore */
2001 2781
2002static void 2782static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2783coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{ 2784{
2005 SV *count_sv = AvARRAY (av)[0]; 2785 SV *count_sv = AvARRAY (av)[0];
… …
2017 AvARRAY (av)[0] = AvARRAY (av)[1]; 2797 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv; 2798 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av); 2799 cb = av_shift (av);
2020 2800
2021 if (SvOBJECT (cb)) 2801 if (SvOBJECT (cb))
2802 {
2022 api_ready (aTHX_ cb); 2803 api_ready (aTHX_ cb);
2023 else 2804 --count;
2024 croak ("callbacks not yet supported"); 2805 }
2806 else if (SvTYPE (cb) == SVt_PVCV)
2807 {
2808 dSP;
2809 PUSHMARK (SP);
2810 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2811 PUTBACK;
2812 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2813 }
2025 2814
2026 SvREFCNT_dec (cb); 2815 SvREFCNT_dec (cb);
2027
2028 --count;
2029 } 2816 }
2030} 2817}
2031 2818
2032static void 2819static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2820coro_semaphore_destroy (pTHX_ struct coro *coro)
2034{ 2821{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2822 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2823 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037} 2824}
2038 2825
… …
2045 /* if we are about to throw, don't actually acquire the lock, just throw */ 2832 /* if we are about to throw, don't actually acquire the lock, just throw */
2046 if (CORO_THROW) 2833 if (CORO_THROW)
2047 return 0; 2834 return 0;
2048 else if (SvIVX (count_sv) > 0) 2835 else if (SvIVX (count_sv) > 0)
2049 { 2836 {
2050 SvSTATE_current->on_destroy = 0; 2837 frame->destroy = 0;
2051 2838
2052 if (acquire) 2839 if (acquire)
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2840 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2054 else 2841 else
2055 coro_semaphore_adjust (aTHX_ av, 0); 2842 coro_semaphore_adjust (aTHX_ av, 0);
… …
2098 { 2885 {
2099 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2886 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2100 2887
2101 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2888 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2102 frame->prepare = prepare_schedule; 2889 frame->prepare = prepare_schedule;
2103
2104 /* to avoid race conditions when a woken-up coro gets terminated */ 2890 /* to avoid race conditions when a woken-up coro gets terminated */
2105 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2891 /* we arrange for a temporary on_destroy that calls adjust (0) */
2106 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2892 frame->destroy = coro_semaphore_destroy;
2107 } 2893 }
2108} 2894}
2109 2895
2110static void 2896static void
2111slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2897slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2115} 2901}
2116 2902
2117static void 2903static void
2118slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2904slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{ 2905{
2906 if (items >= 2)
2907 {
2908 /* callback form */
2909 AV *av = (AV *)SvRV (arg [0]);
2910 SV *cb_cv = s_get_cv_croak (arg [1]);
2911
2912 av_push (av, SvREFCNT_inc_NN (cb_cv));
2913
2914 if (SvIVX (AvARRAY (av)[0]) > 0)
2915 coro_semaphore_adjust (aTHX_ av, 0);
2916
2917 frame->prepare = prepare_nop;
2918 frame->check = slf_check_nop;
2919 }
2920 else
2921 {
2120 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 2922 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2121 frame->check = slf_check_semaphore_wait; 2923 frame->check = slf_check_semaphore_wait;
2924 }
2122} 2925}
2123 2926
2124/*****************************************************************************/ 2927/* signal */
2125/* gensub: simple closure generation utility */
2126 2928
2127#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2929static void
2128 2930coro_signal_wake (pTHX_ AV *av, int count)
2129/* create a closure from XS, returns a code reference */
2130/* the arg can be accessed via GENSUB_ARG from the callback */
2131/* the callback must use dXSARGS/XSRETURN */
2132static SV *
2133gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2134{ 2931{
2135 CV *cv = (CV *)newSV (0); 2932 SvIVX (AvARRAY (av)[0]) = 0;
2136 2933
2137 sv_upgrade ((SV *)cv, SVt_PVCV); 2934 /* now signal count waiters */
2935 while (count > 0 && AvFILLp (av) > 0)
2936 {
2937 SV *cb;
2138 2938
2139 CvANON_on (cv); 2939 /* swap first two elements so we can shift a waiter */
2140 CvISXSUB_on (cv); 2940 cb = AvARRAY (av)[0];
2141 CvXSUB (cv) = xsub; 2941 AvARRAY (av)[0] = AvARRAY (av)[1];
2142 GENSUB_ARG = arg; 2942 AvARRAY (av)[1] = cb;
2143 2943
2144 return newRV_noinc ((SV *)cv); 2944 cb = av_shift (av);
2945
2946 if (SvTYPE (cb) == SVt_PVCV)
2947 {
2948 dSP;
2949 PUSHMARK (SP);
2950 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2951 PUTBACK;
2952 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2953 }
2954 else
2955 {
2956 api_ready (aTHX_ cb);
2957 sv_setiv (cb, 0); /* signal waiter */
2958 }
2959
2960 SvREFCNT_dec (cb);
2961
2962 --count;
2963 }
2964}
2965
2966static int
2967slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2968{
2969 /* if we are about to throw, also stop waiting */
2970 return SvROK ((SV *)frame->data) && !CORO_THROW;
2971}
2972
2973static void
2974slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2975{
2976 AV *av = (AV *)SvRV (arg [0]);
2977
2978 if (items >= 2)
2979 {
2980 SV *cb_cv = s_get_cv_croak (arg [1]);
2981 av_push (av, SvREFCNT_inc_NN (cb_cv));
2982
2983 if (SvIVX (AvARRAY (av)[0]))
2984 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2985
2986 frame->prepare = prepare_nop;
2987 frame->check = slf_check_nop;
2988 }
2989 else if (SvIVX (AvARRAY (av)[0]))
2990 {
2991 SvIVX (AvARRAY (av)[0]) = 0;
2992 frame->prepare = prepare_nop;
2993 frame->check = slf_check_nop;
2994 }
2995 else
2996 {
2997 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2998
2999 av_push (av, waiter);
3000
3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3002 frame->prepare = prepare_schedule;
3003 frame->check = slf_check_signal_wait;
3004 }
2145} 3005}
2146 3006
2147/*****************************************************************************/ 3007/*****************************************************************************/
2148/* Coro::AIO */ 3008/* Coro::AIO */
2149 3009
… …
2160 3020
2161static void 3021static void
2162coro_aio_callback (pTHX_ CV *cv) 3022coro_aio_callback (pTHX_ CV *cv)
2163{ 3023{
2164 dXSARGS; 3024 dXSARGS;
2165 AV *state = (AV *)GENSUB_ARG; 3025 AV *state = (AV *)S_GENSUB_ARG;
2166 SV *coro = av_pop (state); 3026 SV *coro = av_pop (state);
2167 SV *data_sv = newSV (sizeof (struct io_state)); 3027 SV *data_sv = newSV (sizeof (struct io_state));
2168 3028
2169 av_extend (state, items); 3029 av_extend (state, items - 1);
2170 3030
2171 sv_upgrade (data_sv, SVt_PV); 3031 sv_upgrade (data_sv, SVt_PV);
2172 SvCUR_set (data_sv, sizeof (struct io_state)); 3032 SvCUR_set (data_sv, sizeof (struct io_state));
2173 SvPOK_only (data_sv); 3033 SvPOK_only (data_sv);
2174 3034
… …
2284 3144
2285 for (i = 0; i < items; ++i) 3145 for (i = 0; i < items; ++i)
2286 PUSHs (arg [i]); 3146 PUSHs (arg [i]);
2287 3147
2288 /* now push the callback closure */ 3148 /* now push the callback closure */
2289 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3149 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2290 3150
2291 /* now call the AIO function - we assume our request is uncancelable */ 3151 /* now call the AIO function - we assume our request is uncancelable */
2292 PUTBACK; 3152 PUTBACK;
2293 call_sv ((SV *)req, G_VOID | G_DISCARD); 3153 call_sv ((SV *)req, G_VOID | G_DISCARD);
2294 } 3154 }
2295 3155
2296 /* now that the requets is going, we loop toll we have a result */ 3156 /* now that the request is going, we loop till we have a result */
2297 frame->data = (void *)state; 3157 frame->data = (void *)state;
2298 frame->prepare = prepare_schedule; 3158 frame->prepare = prepare_schedule;
2299 frame->check = slf_check_aio_req; 3159 frame->check = slf_check_aio_req;
2300} 3160}
2301 3161
… …
2308 3168
2309 XSRETURN_EMPTY; 3169 XSRETURN_EMPTY;
2310} 3170}
2311 3171
2312/*****************************************************************************/ 3172/*****************************************************************************/
3173
3174#if CORO_CLONE
3175# include "clone.c"
3176#endif
3177
3178/*****************************************************************************/
3179
3180static SV *
3181coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3182{
3183 SV *coro_sv;
3184 struct coro *coro;
3185 MAGIC *mg;
3186 HV *hv;
3187 SV *cb;
3188 int i;
3189
3190 if (argc > 0)
3191 {
3192 cb = s_get_cv_croak (argv [0]);
3193
3194 if (!is_coro)
3195 {
3196 if (CvISXSUB (cb))
3197 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3198
3199 if (!CvROOT (cb))
3200 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3201 }
3202 }
3203
3204 Newz (0, coro, 1, struct coro);
3205 coro->args = newAV ();
3206 coro->flags = CF_NEW;
3207
3208 if (coro_first) coro_first->prev = coro;
3209 coro->next = coro_first;
3210 coro_first = coro;
3211
3212 coro->hv = hv = newHV ();
3213 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3214 mg->mg_flags |= MGf_DUP;
3215 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3216
3217 if (argc > 0)
3218 {
3219 av_extend (coro->args, argc + is_coro - 1);
3220
3221 if (is_coro)
3222 {
3223 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3224 cb = (SV *)cv_coro_run;
3225 }
3226
3227 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3228
3229 for (i = 1; i < argc; i++)
3230 av_push (coro->args, newSVsv (argv [i]));
3231 }
3232
3233 return coro_sv;
3234}
2313 3235
2314MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3236MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2315 3237
2316PROTOTYPES: DISABLE 3238PROTOTYPES: DISABLE
2317 3239
… …
2322 coro_thx = PERL_GET_CONTEXT; 3244 coro_thx = PERL_GET_CONTEXT;
2323# endif 3245# endif
2324#endif 3246#endif
2325 BOOT_PAGESIZE; 3247 BOOT_PAGESIZE;
2326 3248
3249 cctx_current = cctx_new_empty ();
3250
2327 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3251 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2328 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3252 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2329 3253
2330 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3254 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2331 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3255 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2350 3274
2351 { 3275 {
2352 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3276 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2353 3277
2354 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3278 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2355 hv_store_ent (PL_custom_op_names, slf, 3279 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2356 newSVpv ("coro_slf", 0), 0);
2357 3280
2358 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3281 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2359 hv_store_ent (PL_custom_op_descs, slf, 3282 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2360 newSVpv ("coro schedule like function", 0), 0);
2361 } 3283 }
2362 3284
2363 coroapi.ver = CORO_API_VERSION; 3285 coroapi.ver = CORO_API_VERSION;
2364 coroapi.rev = CORO_API_REVISION; 3286 coroapi.rev = CORO_API_REVISION;
2365 3287
… …
2370 coroapi.prepare_nop = prepare_nop; 3292 coroapi.prepare_nop = prepare_nop;
2371 coroapi.prepare_schedule = prepare_schedule; 3293 coroapi.prepare_schedule = prepare_schedule;
2372 coroapi.prepare_cede = prepare_cede; 3294 coroapi.prepare_cede = prepare_cede;
2373 coroapi.prepare_cede_notself = prepare_cede_notself; 3295 coroapi.prepare_cede_notself = prepare_cede_notself;
2374 3296
2375 { 3297 time_init (aTHX);
2376 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2377 3298
2378 if (!svp) croak ("Time::HiRes is required");
2379 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2380
2381 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2382 }
2383
2384 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3299 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2385} 3300}
2386 3301
2387SV * 3302SV *
2388new (char *klass, ...) 3303new (SV *klass, ...)
3304 ALIAS:
3305 Coro::new = 1
2389 CODE: 3306 CODE:
2390{ 3307 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2391 struct coro *coro; 3308 OUTPUT:
2392 MAGIC *mg;
2393 HV *hv;
2394 int i;
2395
2396 Newz (0, coro, 1, struct coro);
2397 coro->args = newAV ();
2398 coro->flags = CF_NEW;
2399
2400 if (coro_first) coro_first->prev = coro;
2401 coro->next = coro_first;
2402 coro_first = coro;
2403
2404 coro->hv = hv = newHV ();
2405 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2406 mg->mg_flags |= MGf_DUP;
2407 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2408
2409 av_extend (coro->args, items - 1);
2410 for (i = 1; i < items; i++)
2411 av_push (coro->args, newSVsv (ST (i)));
2412}
2413 OUTPUT:
2414 RETVAL 3309 RETVAL
2415 3310
2416void 3311void
2417transfer (...) 3312transfer (...)
2418 PROTOTYPE: $$ 3313 PROTOTYPE: $$
2419 CODE: 3314 CODE:
2420 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3315 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2421 3316
2422bool
2423_destroy (SV *coro_sv)
2424 CODE:
2425 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2426 OUTPUT:
2427 RETVAL
2428
2429void 3317void
2430_exit (int code) 3318_exit (int code)
2431 PROTOTYPE: $ 3319 PROTOTYPE: $
2432 CODE: 3320 CODE:
2433 _exit (code); 3321 _exit (code);
3322
3323SV *
3324clone (Coro::State coro)
3325 CODE:
3326{
3327#if CORO_CLONE
3328 struct coro *ncoro = coro_clone (aTHX_ coro);
3329 MAGIC *mg;
3330 /* TODO: too much duplication */
3331 ncoro->hv = newHV ();
3332 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3333 mg->mg_flags |= MGf_DUP;
3334 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3335#else
3336 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3337#endif
3338}
3339 OUTPUT:
3340 RETVAL
2434 3341
2435int 3342int
2436cctx_stacksize (int new_stacksize = 0) 3343cctx_stacksize (int new_stacksize = 0)
2437 PROTOTYPE: ;$ 3344 PROTOTYPE: ;$
2438 CODE: 3345 CODE:
… …
2488 eval = 1 3395 eval = 1
2489 CODE: 3396 CODE:
2490{ 3397{
2491 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3398 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2492 { 3399 {
2493 struct coro temp; 3400 struct coro *current = SvSTATE_current;
3401 struct CoroSLF slf_save;
2494 3402
2495 if (!(coro->flags & CF_RUNNING)) 3403 if (current != coro)
2496 { 3404 {
2497 PUTBACK; 3405 PUTBACK;
2498 save_perl (aTHX_ &temp); 3406 save_perl (aTHX_ current);
2499 load_perl (aTHX_ coro); 3407 load_perl (aTHX_ coro);
3408 /* the coro is most likely in an active SLF call.
3409 * while not strictly required (the code we execute is
3410 * not allowed to call any SLF functions), it's cleaner
3411 * to reinitialise the slf_frame and restore it later.
3412 * This might one day allow us to actually do SLF calls
3413 * from code executed here.
3414 */
3415 slf_save = slf_frame;
3416 slf_frame.prepare = 0;
3417 SPAGAIN;
2500 } 3418 }
2501 3419
2502 {
2503 dSP;
2504 ENTER;
2505 SAVETMPS;
2506 PUTBACK;
2507 PUSHSTACK; 3420 PUSHSTACK;
3421
2508 PUSHMARK (SP); 3422 PUSHMARK (SP);
3423 PUTBACK;
2509 3424
2510 if (ix) 3425 if (ix)
2511 eval_sv (coderef, 0); 3426 eval_sv (coderef, 0);
2512 else 3427 else
2513 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3428 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2514 3429
2515 POPSTACK; 3430 POPSTACK;
2516 SPAGAIN; 3431 SPAGAIN;
2517 FREETMPS;
2518 LEAVE;
2519 PUTBACK;
2520 }
2521 3432
2522 if (!(coro->flags & CF_RUNNING)) 3433 if (current != coro)
2523 { 3434 {
3435 PUTBACK;
3436 slf_frame = slf_save;
2524 save_perl (aTHX_ coro); 3437 save_perl (aTHX_ coro);
2525 load_perl (aTHX_ &temp); 3438 load_perl (aTHX_ current);
2526 SPAGAIN; 3439 SPAGAIN;
2527 } 3440 }
2528 } 3441 }
2529} 3442}
2530 3443
… …
2534 ALIAS: 3447 ALIAS:
2535 is_ready = CF_READY 3448 is_ready = CF_READY
2536 is_running = CF_RUNNING 3449 is_running = CF_RUNNING
2537 is_new = CF_NEW 3450 is_new = CF_NEW
2538 is_destroyed = CF_DESTROYED 3451 is_destroyed = CF_DESTROYED
3452 is_suspended = CF_SUSPENDED
2539 CODE: 3453 CODE:
2540 RETVAL = boolSV (coro->flags & ix); 3454 RETVAL = boolSV (coro->flags & ix);
2541 OUTPUT: 3455 OUTPUT:
2542 RETVAL 3456 RETVAL
2543 3457
2544void 3458void
2545throw (Coro::State self, SV *throw = &PL_sv_undef) 3459throw (Coro::State self, SV *exception = &PL_sv_undef)
2546 PROTOTYPE: $;$ 3460 PROTOTYPE: $;$
2547 CODE: 3461 CODE:
2548{ 3462{
2549 struct coro *current = SvSTATE_current; 3463 struct coro *current = SvSTATE_current;
2550 SV **throwp = self == current ? &CORO_THROW : &self->except; 3464 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2551 SvREFCNT_dec (*throwp); 3465 SvREFCNT_dec (*exceptionp);
2552 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3466 SvGETMAGIC (exception);
3467 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2553} 3468}
2554 3469
2555void 3470void
2556api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3471api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2557 PROTOTYPE: $;$ 3472 PROTOTYPE: $;$
… …
2559 3474
2560SV * 3475SV *
2561has_cctx (Coro::State coro) 3476has_cctx (Coro::State coro)
2562 PROTOTYPE: $ 3477 PROTOTYPE: $
2563 CODE: 3478 CODE:
2564 RETVAL = boolSV (!!coro->cctx); 3479 /* maybe manage the running flag differently */
3480 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2565 OUTPUT: 3481 OUTPUT:
2566 RETVAL 3482 RETVAL
2567 3483
2568int 3484int
2569is_traced (Coro::State coro) 3485is_traced (Coro::State coro)
… …
2589 3505
2590void 3506void
2591force_cctx () 3507force_cctx ()
2592 PROTOTYPE: 3508 PROTOTYPE:
2593 CODE: 3509 CODE:
2594 SvSTATE_current->cctx->idle_sp = 0; 3510 cctx_current->idle_sp = 0;
2595 3511
2596void 3512void
2597swap_defsv (Coro::State self) 3513swap_defsv (Coro::State self)
2598 PROTOTYPE: $ 3514 PROTOTYPE: $
2599 ALIAS: 3515 ALIAS:
… …
2607 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3523 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2608 3524
2609 SV *tmp = *src; *src = *dst; *dst = tmp; 3525 SV *tmp = *src; *src = *dst; *dst = tmp;
2610 } 3526 }
2611 3527
3528void
3529cancel (Coro::State self)
3530 CODE:
3531 coro_state_destroy (aTHX_ self);
3532
3533SV *
3534enable_times (int enabled = enable_times)
3535 CODE:
3536{
3537 RETVAL = boolSV (enable_times);
3538
3539 if (enabled != enable_times)
3540 {
3541 enable_times = enabled;
3542
3543 coro_times_update ();
3544 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3545 }
3546}
3547 OUTPUT:
3548 RETVAL
3549
3550void
3551times (Coro::State self)
3552 PPCODE:
3553{
3554 struct coro *current = SvSTATE (coro_current);
3555
3556 if (expect_false (current == self))
3557 {
3558 coro_times_update ();
3559 coro_times_add (SvSTATE (coro_current));
3560 }
3561
3562 EXTEND (SP, 2);
3563 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3564 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3565
3566 if (expect_false (current == self))
3567 coro_times_sub (SvSTATE (coro_current));
3568}
3569
3570void
3571swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3572 CODE:
3573{
3574 struct coro *current = SvSTATE_current;
3575
3576 if (current == coro)
3577 SWAP_SVS (current);
3578
3579 if (!coro->swap_sv)
3580 coro->swap_sv = newAV ();
3581
3582 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3583 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3584
3585 if (current == coro)
3586 SWAP_SVS (current);
3587}
3588
2612 3589
2613MODULE = Coro::State PACKAGE = Coro 3590MODULE = Coro::State PACKAGE = Coro
2614 3591
2615BOOT: 3592BOOT:
2616{ 3593{
2617 int i;
2618
2619 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2620 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3594 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2621 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3595 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2622 3596 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2623 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3597 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2624 SvREADONLY_on (coro_current); 3598 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3599 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3600 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3601 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2625 3602
3603 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3604 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3605 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3606 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3607
2626 coro_stash = gv_stashpv ("Coro", TRUE); 3608 coro_stash = gv_stashpv ("Coro", TRUE);
2627 3609
2628 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3610 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2629 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3611 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2630 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3612 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2631 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3613 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2632 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3614 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2633 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3615 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2634
2635 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2636 coro_ready[i] = newAV ();
2637 3616
2638 { 3617 {
2639 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3618 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2640 3619
2641 coroapi.schedule = api_schedule; 3620 coroapi.schedule = api_schedule;
3621 coroapi.schedule_to = api_schedule_to;
2642 coroapi.cede = api_cede; 3622 coroapi.cede = api_cede;
2643 coroapi.cede_notself = api_cede_notself; 3623 coroapi.cede_notself = api_cede_notself;
2644 coroapi.ready = api_ready; 3624 coroapi.ready = api_ready;
2645 coroapi.is_ready = api_is_ready; 3625 coroapi.is_ready = api_is_ready;
2646 coroapi.nready = coro_nready; 3626 coroapi.nready = coro_nready;
… …
2650 sv_setiv (sv, (IV)&coroapi); 3630 sv_setiv (sv, (IV)&coroapi);
2651 SvREADONLY_on (sv); 3631 SvREADONLY_on (sv);
2652 } 3632 }
2653} 3633}
2654 3634
3635SV *
3636async (...)
3637 PROTOTYPE: &@
3638 CODE:
3639 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3640 api_ready (aTHX_ RETVAL);
3641 OUTPUT:
3642 RETVAL
3643
3644void
3645_destroy (Coro::State coro)
3646 CODE:
3647 /* used by the manager thread */
3648 coro_state_destroy (aTHX_ coro);
3649 coro_call_on_destroy (aTHX_ coro);
3650
3651void
3652terminate (...)
3653 CODE:
3654 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3655
3656void
3657cancel (...)
3658 CODE:
3659 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3660
3661int
3662safe_cancel (Coro::State self, ...)
3663 C_ARGS: aTHX_ self, &ST (1), items - 1
3664
2655void 3665void
2656schedule (...) 3666schedule (...)
2657 CODE: 3667 CODE:
2658 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3668 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3669
3670void
3671schedule_to (...)
3672 CODE:
3673 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3674
3675void
3676cede_to (...)
3677 CODE:
3678 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2659 3679
2660void 3680void
2661cede (...) 3681cede (...)
2662 CODE: 3682 CODE:
2663 CORO_EXECUTE_SLF_XS (slf_init_cede); 3683 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2677void 3697void
2678_set_readyhook (SV *hook) 3698_set_readyhook (SV *hook)
2679 PROTOTYPE: $ 3699 PROTOTYPE: $
2680 CODE: 3700 CODE:
2681 SvREFCNT_dec (coro_readyhook); 3701 SvREFCNT_dec (coro_readyhook);
3702 SvGETMAGIC (hook);
3703 if (SvOK (hook))
3704 {
2682 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3705 coro_readyhook = newSVsv (hook);
3706 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3707 }
3708 else
3709 {
3710 coro_readyhook = 0;
3711 CORO_READYHOOK = 0;
3712 }
2683 3713
2684int 3714int
2685prio (Coro::State coro, int newprio = 0) 3715prio (Coro::State coro, int newprio = 0)
2686 PROTOTYPE: $;$ 3716 PROTOTYPE: $;$
2687 ALIAS: 3717 ALIAS:
… …
2693 if (items > 1) 3723 if (items > 1)
2694 { 3724 {
2695 if (ix) 3725 if (ix)
2696 newprio = coro->prio - newprio; 3726 newprio = coro->prio - newprio;
2697 3727
2698 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3728 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2699 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3729 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2700 3730
2701 coro->prio = newprio; 3731 coro->prio = newprio;
2702 } 3732 }
2703} 3733}
2704 OUTPUT: 3734 OUTPUT:
… …
2718 CODE: 3748 CODE:
2719 RETVAL = coro_nready; 3749 RETVAL = coro_nready;
2720 OUTPUT: 3750 OUTPUT:
2721 RETVAL 3751 RETVAL
2722 3752
2723# for async_pool speedup
2724void 3753void
2725_pool_1 (SV *cb) 3754suspend (Coro::State self)
3755 PROTOTYPE: $
2726 CODE: 3756 CODE:
2727{ 3757 self->flags |= CF_SUSPENDED;
2728 HV *hv = (HV *)SvRV (coro_current);
2729 struct coro *coro = SvSTATE_hv ((SV *)hv);
2730 AV *defav = GvAV (PL_defgv);
2731 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2732 AV *invoke_av;
2733 int i, len;
2734 3758
2735 if (!invoke) 3759void
3760resume (Coro::State self)
3761 PROTOTYPE: $
3762 CODE:
3763 self->flags &= ~CF_SUSPENDED;
3764
3765void
3766_pool_handler (...)
3767 CODE:
3768 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3769
3770void
3771async_pool (SV *cv, ...)
3772 PROTOTYPE: &@
3773 PPCODE:
3774{
3775 HV *hv = (HV *)av_pop (av_async_pool);
3776 AV *av = newAV ();
3777 SV *cb = ST (0);
3778 int i;
3779
3780 av_extend (av, items - 2);
3781 for (i = 1; i < items; ++i)
3782 av_push (av, SvREFCNT_inc_NN (ST (i)));
3783
3784 if ((SV *)hv == &PL_sv_undef)
2736 { 3785 {
2737 SV *old = PL_diehook; 3786 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2738 PL_diehook = 0; 3787 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2739 SvREFCNT_dec (old); 3788 SvREFCNT_dec (sv);
2740 croak ("\3async_pool terminate\2\n");
2741 } 3789 }
2742 3790
2743 SvREFCNT_dec (coro->saved_deffh);
2744 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2745
2746 hv_store (hv, "desc", sizeof ("desc") - 1,
2747 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2748
2749 invoke_av = (AV *)SvRV (invoke);
2750 len = av_len (invoke_av);
2751
2752 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2753
2754 if (len > 0)
2755 { 3791 {
2756 av_fill (defav, len - 1); 3792 struct coro *coro = SvSTATE_hv (hv);
2757 for (i = 0; i < len; ++i) 3793
2758 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3794 assert (!coro->invoke_cb);
3795 assert (!coro->invoke_av);
3796 coro->invoke_cb = SvREFCNT_inc (cb);
3797 coro->invoke_av = av;
2759 } 3798 }
3799
3800 api_ready (aTHX_ (SV *)hv);
3801
3802 if (GIMME_V != G_VOID)
3803 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3804 else
3805 SvREFCNT_dec (hv);
2760} 3806}
3807
3808SV *
3809rouse_cb ()
3810 PROTOTYPE:
3811 CODE:
3812 RETVAL = coro_new_rouse_cb (aTHX);
3813 OUTPUT:
3814 RETVAL
2761 3815
2762void 3816void
2763_pool_2 (SV *cb) 3817rouse_wait (...)
3818 PROTOTYPE: ;$
3819 PPCODE:
3820 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3821
3822void
3823on_enter (SV *block)
3824 ALIAS:
3825 on_leave = 1
3826 PROTOTYPE: &
2764 CODE: 3827 CODE:
2765{ 3828{
2766 HV *hv = (HV *)SvRV (coro_current);
2767 struct coro *coro = SvSTATE_hv ((SV *)hv); 3829 struct coro *coro = SvSTATE_current;
3830 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2768 3831
2769 sv_setsv (cb, &PL_sv_undef); 3832 block = s_get_cv_croak (block);
2770 3833
2771 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3834 if (!*avp)
2772 coro->saved_deffh = 0; 3835 *avp = newAV ();
2773 3836
2774 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3837 av_push (*avp, SvREFCNT_inc (block));
2775 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2776 {
2777 SV *old = PL_diehook;
2778 PL_diehook = 0;
2779 SvREFCNT_dec (old);
2780 croak ("\3async_pool terminate\2\n");
2781 }
2782 3838
2783 av_clear (GvAV (PL_defgv)); 3839 if (!ix)
2784 hv_store (hv, "desc", sizeof ("desc") - 1, 3840 on_enterleave_call (aTHX_ block);
2785 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2786 3841
2787 coro->prio = 0; 3842 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2788 3843 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2789 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3844 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2790 api_trace (aTHX_ coro_current, 0);
2791
2792 av_push (av_async_pool, newSVsv (coro_current));
2793} 3845}
2794 3846
2795 3847
2796MODULE = Coro::State PACKAGE = PerlIO::cede 3848MODULE = Coro::State PACKAGE = PerlIO::cede
2797 3849
… …
2800 3852
2801 3853
2802MODULE = Coro::State PACKAGE = Coro::Semaphore 3854MODULE = Coro::State PACKAGE = Coro::Semaphore
2803 3855
2804SV * 3856SV *
2805new (SV *klass, SV *count_ = 0) 3857new (SV *klass, SV *count = 0)
2806 CODE: 3858 CODE:
2807{ 3859{
2808 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3860 int semcnt = 1;
2809 AV *av = newAV ();
2810 SV **ary;
2811 3861
2812 /* unfortunately, building manually saves memory */ 3862 if (count)
2813 Newx (ary, 2, SV *); 3863 {
2814 AvALLOC (av) = ary; 3864 SvGETMAGIC (count);
2815 AvARRAY (av) = ary;
2816 AvMAX (av) = 1;
2817 AvFILLp (av) = 0;
2818 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2819 3865
2820 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3866 if (SvOK (count))
3867 semcnt = SvIV (count);
3868 }
3869
3870 RETVAL = sv_bless (
3871 coro_waitarray_new (aTHX_ semcnt),
3872 GvSTASH (CvGV (cv))
3873 );
2821} 3874}
3875 OUTPUT:
3876 RETVAL
3877
3878# helper for Coro::Channel and others
3879SV *
3880_alloc (int count)
3881 CODE:
3882 RETVAL = coro_waitarray_new (aTHX_ count);
2822 OUTPUT: 3883 OUTPUT:
2823 RETVAL 3884 RETVAL
2824 3885
2825SV * 3886SV *
2826count (SV *self) 3887count (SV *self)
… …
2835 adjust = 1 3896 adjust = 1
2836 CODE: 3897 CODE:
2837 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3898 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2838 3899
2839void 3900void
2840down (SV *self) 3901down (...)
2841 CODE: 3902 CODE:
2842 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3903 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2843 3904
2844void 3905void
2845wait (SV *self) 3906wait (...)
2846 CODE: 3907 CODE:
2847 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 3908 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2848 3909
2849void 3910void
2850try (SV *self) 3911try (SV *self)
… …
2864 XSRETURN_NO; 3925 XSRETURN_NO;
2865} 3926}
2866 3927
2867void 3928void
2868waiters (SV *self) 3929waiters (SV *self)
2869 CODE: 3930 PPCODE:
2870{ 3931{
2871 AV *av = (AV *)SvRV (self); 3932 AV *av = (AV *)SvRV (self);
3933 int wcount = AvFILLp (av) + 1 - 1;
2872 3934
2873 if (GIMME_V == G_SCALAR) 3935 if (GIMME_V == G_SCALAR)
2874 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3936 XPUSHs (sv_2mortal (newSViv (wcount)));
2875 else 3937 else
2876 { 3938 {
2877 int i; 3939 int i;
2878 EXTEND (SP, AvFILLp (av) + 1 - 1); 3940 EXTEND (SP, wcount);
2879 for (i = 1; i <= AvFILLp (av); ++i) 3941 for (i = 1; i <= wcount; ++i)
2880 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3942 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2881 } 3943 }
2882} 3944}
3945
3946MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3947
3948void
3949_may_delete (SV *sem, int count, int extra_refs)
3950 PPCODE:
3951{
3952 AV *av = (AV *)SvRV (sem);
3953
3954 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3955 && AvFILLp (av) == 0 /* no waiters, just count */
3956 && SvIV (AvARRAY (av)[0]) == count)
3957 XSRETURN_YES;
3958
3959 XSRETURN_NO;
3960}
3961
3962MODULE = Coro::State PACKAGE = Coro::Signal
3963
3964SV *
3965new (SV *klass)
3966 CODE:
3967 RETVAL = sv_bless (
3968 coro_waitarray_new (aTHX_ 0),
3969 GvSTASH (CvGV (cv))
3970 );
3971 OUTPUT:
3972 RETVAL
3973
3974void
3975wait (...)
3976 CODE:
3977 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3978
3979void
3980broadcast (SV *self)
3981 CODE:
3982{
3983 AV *av = (AV *)SvRV (self);
3984 coro_signal_wake (aTHX_ av, AvFILLp (av));
3985}
3986
3987void
3988send (SV *self)
3989 CODE:
3990{
3991 AV *av = (AV *)SvRV (self);
3992
3993 if (AvFILLp (av))
3994 coro_signal_wake (aTHX_ av, 1);
3995 else
3996 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3997}
3998
3999IV
4000awaited (SV *self)
4001 CODE:
4002 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4003 OUTPUT:
4004 RETVAL
2883 4005
2884 4006
2885MODULE = Coro::State PACKAGE = Coro::AnyEvent 4007MODULE = Coro::State PACKAGE = Coro::AnyEvent
2886 4008
2887BOOT: 4009BOOT:
… …
2915 4037
2916void 4038void
2917_register (char *target, char *proto, SV *req) 4039_register (char *target, char *proto, SV *req)
2918 CODE: 4040 CODE:
2919{ 4041{
2920 HV *st; 4042 SV *req_cv = s_get_cv_croak (req);
2921 GV *gvp;
2922 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2923 /* newXSproto doesn't return the CV on 5.8 */ 4043 /* newXSproto doesn't return the CV on 5.8 */
2924 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4044 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2925 sv_setpv ((SV *)slf_cv, proto); 4045 sv_setpv ((SV *)slf_cv, proto);
2926 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4046 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2927} 4047}
2928 4048
4049MODULE = Coro::State PACKAGE = Coro::Select
4050
4051void
4052patch_pp_sselect ()
4053 CODE:
4054 if (!coro_old_pp_sselect)
4055 {
4056 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4057 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4058 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4059 }
4060
4061void
4062unpatch_pp_sselect ()
4063 CODE:
4064 if (coro_old_pp_sselect)
4065 {
4066 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4067 coro_old_pp_sselect = 0;
4068 }
4069

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