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Comparing Coro/Coro/State.xs (file contents):
Revision 1.291 by root, Tue Nov 18 05:55:04 2008 UTC vs.
Revision 1.376 by root, Fri Oct 2 20:48:04 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
111#endif 64#endif
112 65
113#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
120#endif 73#endif
121 74
122/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 76 * portable way as possible. */
124#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
126#else 80#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
128#endif 83#endif
129 84
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
131 86
132#if __GNUC__ >= 3 87#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
135# define INLINE static inline 90# define INLINE static inline
136#else 91#else
137# define attribute(x) 92# define attribute(x)
138# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
139# define INLINE static 94# define INLINE static
… …
143#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
144 99
145#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
146 101
147#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
148 104
149#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
150# if CORO_PTHREAD 106# if CORO_PTHREAD
151static void *coro_thx; 107static void *coro_thx;
152# endif 108# endif
153#endif 109#endif
154 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
155static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
156 123
157/* we hijack an hopefully unused CV flag for our purposes */ 124/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 125#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 126static OP *pp_slf (pTHX);
160 127
… …
164static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 132static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
139
169static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 142static SV *rv_diehook;
172static SV *rv_warnhook; 143static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
174 145
175/* async_pool helper stuff */ 146/* async_pool helper stuff */
176static SV *sv_pool_rss; 147static SV *sv_pool_rss;
177static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
179 153
180/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
181static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
182 162
183static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
185 165
186enum { 166enum {
… …
212 int valgrind_id; 192 int valgrind_id;
213#endif 193#endif
214 unsigned char flags; 194 unsigned char flags;
215} coro_cctx; 195} coro_cctx;
216 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
217enum { 201enum {
218 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
222}; 207};
223 208
224/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
225typedef struct 210typedef struct
226{ 211{
227 SV *defsv; 212 SV *defsv;
228 AV *defav; 213 AV *defav;
229 SV *errsv; 214 SV *errsv;
230 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
231#define VAR(name,type) type name; 217#define VAR(name,type) type name;
232# include "state.h" 218# include "state.h"
233#undef VAR 219#undef VAR
234} perl_slots; 220} perl_slots;
235 221
… …
238/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
239struct coro { 225struct coro {
240 /* the C coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 227 coro_cctx *cctx;
242 228
229 /* ready queue */
230 struct coro *next_ready;
231
243 /* state data */ 232 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 233 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 234 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
247 236
237 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro); 242 void (*on_destroy)(pTHX_ struct coro *coro);
253 243
254 /* statistics */ 244 /* statistics */
255 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
256 246
257 /* coro process data */ 247 /* coro process data */
258 int prio; 248 int prio;
259 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
260 251
261 /* async_pool */ 252 /* async_pool */
262 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
263 266
264 /* linked list */ 267 /* linked list */
265 struct coro *next, *prev; 268 struct coro *next, *prev;
266}; 269};
267 270
… …
270 273
271/* the following variables are effectively part of the perl context */ 274/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 275/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 276/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 277static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276 278
277/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
278 280
279#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
285 287
286/* for Coro.pm */ 288/* for Coro.pm */
287static SV *coro_current; 289static SV *coro_current;
288static SV *coro_readyhook; 290static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
292static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 293static struct coro *coro_first;
291#define coro_nready coroapi.nready 294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
292 315
293/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
294 317
295static SV * 318static SV *
296coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 343 get_hv (name, create);
321#endif 344#endif
322 return get_hv (name, create); 345 return get_hv (name, create);
323} 346}
324 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
325static AV * 447static AV *
326coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
327{ 449{
328 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
330 452
331 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 459#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 461 --AvFILLp (padlist);
340 462
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
343 465
344 return newpadlist; 466 return newpadlist;
345} 467}
346 468
347static void 469static void
348free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
349{ 471{
350 /* may be during global destruction */ 472 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
352 { 474 {
353 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
354 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
355 { 478 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
357 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 481 I32 j = AvFILLp (av);
359 SV *sv; 482
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 488 }
366 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
368 } 494 }
369} 495}
370 496
371static int 497static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 499{
374 AV *padlist; 500 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
376 506
377 /* casting is fun. */ 507 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
380 510
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 512
383 return 0; 513 return 0;
384} 514}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 515
389static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 517 0, 0, 0, 0,
391 coro_cv_free 518 coro_cv_free
392}; 519};
393
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436 520
437/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
438static void 522static void
439get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
440{ 524{
… …
446 else 530 else
447 { 531 {
448#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
455#else 539#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 541#endif
458 } 542 }
459} 543}
460 544
461static void 545static void
… …
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
469 553
470 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
471 555
472 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
474 558
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 560}
477 561
478/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
479 617
480static void 618static void
481load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
482{ 620{
483 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
484 c->slot = 0; 622 c->slot = 0;
485 623
486 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
487 625
488 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
489 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
490 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
491 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
492 631
493 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
494 # include "state.h" 633 # include "state.h"
495 #undef VAR 634 #undef VAR
496 635
… …
509 648
510 PUTBACK; 649 PUTBACK;
511 } 650 }
512 651
513 slf_frame = c->slf_frame; 652 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
515} 672}
516 673
517static void 674static void
518save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
519{ 676{
520 c->throw = coro_throw; 677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 696 c->slf_frame = slf_frame;
522 697
523 { 698 {
524 dSP; 699 dSP;
525 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
… …
537 { 712 {
538 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
539 { 714 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
541 716
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 718 {
544 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
545 720
546 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
547 { 722 {
548 EXTEND (SP, 3);
549 PUSHs ((SV *)CvPADLIST (cv)); 723 PUSHs ((SV *)CvPADLIST (cv));
550 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 724 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
551 PUSHs ((SV *)cv); 725 PUSHs ((SV *)cv);
552 726
553 CvDEPTH (cv) = 0; 727 CvDEPTH (cv) = 0;
… …
571 /* we manually unroll here, as usually 2 slots is enough */ 745 /* we manually unroll here, as usually 2 slots is enough */
572 if (SLOT_COUNT >= 1) CXINC; 746 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC; 747 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC; 748 if (SLOT_COUNT >= 3) CXINC;
575 { 749 {
576 int i; 750 unsigned int i;
577 for (i = 3; i < SLOT_COUNT; ++i) 751 for (i = 3; i < SLOT_COUNT; ++i)
578 CXINC; 752 CXINC;
579 } 753 }
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 754 cxstack_ix -= SLOT_COUNT; /* undo allocation */
581 755
582 c->mainstack = PL_mainstack; 756 c->mainstack = PL_mainstack;
583 757
584 { 758 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 759 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 760
587 slot->defav = GvAV (PL_defgv); 761 slot->defav = GvAV (PL_defgv);
588 slot->defsv = DEFSV; 762 slot->defsv = DEFSV;
589 slot->errsv = ERRSV; 763 slot->errsv = ERRSV;
590 slot->irsgv = GvSV (irsgv); 764 slot->irsgv = GvSV (irsgv);
765 slot->hinthv = GvHV (PL_hintgv);
591 766
592 #define VAR(name,type) slot->name = PL_ ## name; 767 #define VAR(name,type) slot->name = PL_ ## name;
593 # include "state.h" 768 # include "state.h"
594 #undef VAR 769 #undef VAR
595 } 770 }
… …
600 * of perl.c:init_stacks, except that it uses less memory 775 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 776 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 777 * not usually need a lot of stackspace.
603 */ 778 */
604#if CORO_PREFER_PERL_FUNCTIONS 779#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 780# define coro_init_stacks(thx) init_stacks ()
606#else 781#else
607static void 782static void
608coro_init_stacks (pTHX) 783coro_init_stacks (pTHX)
609{ 784{
610 PL_curstackinfo = new_stackinfo(32, 8); 785 PL_curstackinfo = new_stackinfo(32, 8);
… …
673#if !PERL_VERSION_ATLEAST (5,10,0) 848#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 849 Safefree (PL_retstack);
675#endif 850#endif
676} 851}
677 852
853#define CORO_RSS \
854 rss += sizeof (SYM (curstackinfo)); \
855 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
856 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
857 rss += SYM (tmps_max) * sizeof (SV *); \
858 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
859 rss += SYM (scopestack_max) * sizeof (I32); \
860 rss += SYM (savestack_max) * sizeof (ANY);
861
678static size_t 862static size_t
679coro_rss (pTHX_ struct coro *coro) 863coro_rss (pTHX_ struct coro *coro)
680{ 864{
681 size_t rss = sizeof (*coro); 865 size_t rss = sizeof (*coro);
682 866
683 if (coro->mainstack) 867 if (coro->mainstack)
684 { 868 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 869 if (coro->flags & CF_RUNNING)
689 { 870 {
690 slot = &tmp_slot; 871 #define SYM(sym) PL_ ## sym
691 872 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 873 #undef SYM
695 } 874 }
696 else 875 else
697 slot = coro->slot;
698
699 if (slot)
700 { 876 {
701 rss += sizeof (slot->curstackinfo); 877 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 878 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 879 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 880 }
713 } 881 }
714 882
715 return rss; 883 return rss;
716} 884}
… …
729#endif 897#endif
730 898
731/* 899/*
732 * This overrides the default magic get method of %SIG elements. 900 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 901 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 902 * and instead of trying to save and restore the hash elements, we just provide
735 * readback here. 903 * readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 904 */
740static int 905static int
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 906coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 907{
743 const char *s = MgPV_nolen_const (mg); 908 const char *s = MgPV_nolen_const (mg);
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 961 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 962
798 if (svp) 963 if (svp)
799 { 964 {
800 SV *old = *svp; 965 SV *old = *svp;
801 *svp = newSVsv (sv); 966 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 967 SvREFCNT_dec (old);
803 return 0; 968 return 0;
804 } 969 }
805 } 970 }
806 971
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 983slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 984{
820 return 0; 985 return 0;
821} 986}
822 987
823static UNOP coro_setup_op; 988static int
989slf_check_repeat (pTHX_ struct CoroSLF *frame)
990{
991 return 1;
992}
993
994static UNOP init_perl_op;
824 995
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 996static void NOINLINE /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 997init_perl (pTHX_ struct coro *coro)
827{ 998{
828 /* 999 /*
829 * emulate part of the perl startup here. 1000 * emulate part of the perl startup here.
830 */ 1001 */
831 coro_init_stacks (aTHX); 1002 coro_init_stacks (aTHX);
832 1003
833 PL_runops = RUNOPS_DEFAULT; 1004 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1005 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1006 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1007 PL_comppad = 0;
1008 PL_comppad_name = 0;
1009 PL_comppad_name_fill = 0;
1010 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1011 PL_curpm = 0;
838 PL_curpad = 0; 1012 PL_curpad = 0;
839 PL_localizing = 0; 1013 PL_localizing = 0;
840 PL_dirty = 0; 1014 PL_dirty = 0;
841 PL_restartop = 0; 1015 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1016#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1017 PL_parser = 0;
844#endif 1018#endif
1019 PL_hints = 0;
845 1020
846 /* recreate the die/warn hooks */ 1021 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1022 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1023 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
849 1024
850 GvSV (PL_defgv) = newSV (0); 1025 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1026 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1027 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1028 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1029 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1030 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1031 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1032
857 { 1033 {
858 dSP; 1034 dSP;
859 UNOP myop; 1035 UNOP myop;
860 1036
861 Zero (&myop, 1, UNOP); 1037 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1038 myop.op_next = Nullop;
1039 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1040 myop.op_flags = OPf_WANT_VOID;
864 1041
865 PUSHMARK (SP); 1042 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1043 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1044 PUTBACK;
868 PL_op = (OP *)&myop; 1045 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1046 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1047 }
872 1048
873 /* this newly created coroutine might be run on an existing cctx which most 1049 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1050 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1051 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1052 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1053 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
878 1054
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1055 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1056 init_perl_op.op_next = PL_op;
1057 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1058 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1059 /* no flags etc. required, as an init function won't be called */
883 1060
884 PL_op = (OP *)&coro_setup_op; 1061 PL_op = (OP *)&init_perl_op;
885 1062
886 /* copy throw, in case it was set before coro_setup */ 1063 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1064 CORO_THROW = coro->except;
888}
889 1065
1066 SWAP_SVS (coro);
1067
1068 if (expect_false (enable_times))
1069 {
1070 coro_times_update ();
1071 coro_times_sub (coro);
1072 }
1073}
1074
890static void 1075static void
891coro_destruct (pTHX_ struct coro *coro) 1076coro_unwind_stacks (pTHX)
892{ 1077{
893 if (!IN_DESTRUCT) 1078 if (!IN_DESTRUCT)
894 { 1079 {
895 /* restore all saved variables and stuff */ 1080 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1081 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1089 POPSTACK_TO (PL_mainstack);
905 1090
906 /* unwind main stack */ 1091 /* unwind main stack */
907 dounwind (-1); 1092 dounwind (-1);
908 } 1093 }
1094}
909 1095
910 SvREFCNT_dec (GvSV (PL_defgv)); 1096static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1097destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1098{
913 SvREFCNT_dec (PL_defoutgv); 1099 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1100
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1101 {
1102 struct coro *current = SvSTATE_current;
1103
1104 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1105
1106 save_perl (aTHX_ current);
1107 load_perl (aTHX_ coro);
1108
1109 coro_unwind_stacks (aTHX);
1110 coro_destruct_stacks (aTHX);
1111
1112 /* restore swapped sv's */
1113 SWAP_SVS (coro);
1114
1115 // now save some sv's to be free'd later
1116 svf [0] = GvSV (PL_defgv);
1117 svf [1] = (SV *)GvAV (PL_defgv);
1118 svf [2] = GvSV (PL_errgv);
1119 svf [3] = (SV *)PL_defoutgv;
1120 svf [4] = PL_rs;
1121 svf [5] = GvSV (irsgv);
1122 svf [6] = (SV *)GvHV (PL_hintgv);
1123 svf [7] = PL_diehook;
1124 svf [8] = PL_warnhook;
1125 assert (9 == sizeof (svf) / sizeof (*svf));
1126
1127 load_perl (aTHX_ current);
1128 }
1129
1130 {
1131 unsigned int i;
1132
1133 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1134 SvREFCNT_dec (svf [i]);
1135
920 SvREFCNT_dec (coro->saved_deffh); 1136 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1137 SvREFCNT_dec (coro->rouse_cb);
922 1138 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1139 SvREFCNT_dec (coro->invoke_av);
1140 }
924} 1141}
925 1142
926INLINE void 1143INLINE void
927free_coro_mortal (pTHX) 1144free_coro_mortal (pTHX)
928{ 1145{
… …
936static int 1153static int
937runops_trace (pTHX) 1154runops_trace (pTHX)
938{ 1155{
939 COP *oldcop = 0; 1156 COP *oldcop = 0;
940 int oldcxix = -2; 1157 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1158
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1159 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1160 {
946 PERL_ASYNC_CHECK (); 1161 PERL_ASYNC_CHECK ();
947 1162
948 if (cctx->flags & CC_TRACE_ALL) 1163 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1164 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1165 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1166 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1167 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1168 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1169 AV *av = newAV (); /* return values */
955 SV **cb; 1170 SV **cb;
… …
992 1207
993 if (PL_curcop != &PL_compiling) 1208 if (PL_curcop != &PL_compiling)
994 { 1209 {
995 SV **cb; 1210 SV **cb;
996 1211
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1212 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1213 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1214 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1215
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1216 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1217 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1218 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1219 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1220 SV *fullname = sv_2mortal (newSV (0));
1007 1221
1008 if (isGV (gv)) 1222 if (isGV (gv))
… …
1013 SAVETMPS; 1227 SAVETMPS;
1014 EXTEND (SP, 3); 1228 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1229 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1230 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1231 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1232 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1233 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1234 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1235 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1236 SPAGAIN;
1023 FREETMPS; 1237 FREETMPS;
… …
1026 } 1240 }
1027 1241
1028 oldcxix = cxstack_ix; 1242 oldcxix = cxstack_ix;
1029 } 1243 }
1030 1244
1031 if (cctx->flags & CC_TRACE_LINE) 1245 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1246 {
1033 dSP; 1247 dSP;
1034 1248
1035 PL_runops = RUNOPS_DEFAULT; 1249 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1250 ENTER;
… …
1055 1269
1056 TAINT_NOT; 1270 TAINT_NOT;
1057 return 0; 1271 return 0;
1058} 1272}
1059 1273
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1274static struct CoroSLF cctx_ssl_frame;
1062 1275
1063static void 1276static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1277slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1278{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1279 ta->prev = 0;
1068} 1280}
1069 1281
1070static int 1282static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1283slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1284{
1073 *frame = cctx_ssl_frame; 1285 *frame = cctx_ssl_frame;
1074 1286
1075 return 1; 1287 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1288}
1077 1289
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1290/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1291static void NOINLINE
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1292cctx_prepare (pTHX)
1081{ 1293{
1082 PL_top_env = &PL_start_env; 1294 PL_top_env = &PL_start_env;
1083 1295
1084 if (cctx->flags & CC_TRACE) 1296 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1297 PL_runops = runops_trace;
1086 1298
1087 /* we already must be in an SLF call, there is no other valid way 1299 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1300 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1301 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1302 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1303
1092 cctx_ssl_cctx = cctx; 1304 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1305 cctx_ssl_frame = slf_frame;
1094 1306
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1307 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1308 slf_frame.check = slf_check_set_stacklevel;
1097} 1309}
… …
1120 /* normally we would need to skip the entersub here */ 1332 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1333 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1334 /* PL_nop = PL_nop->op_next */
1123 1335
1124 /* inject a fake subroutine call to cctx_init */ 1336 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1337 cctx_prepare (aTHX);
1126 1338
1127 /* cctx_run is the alternative tail of transfer() */ 1339 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1340 transfer_tail (aTHX);
1129 1341
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1342 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1343 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1344 perl_run (PL_curinterp);
1345 /*
1346 * Unfortunately, there is no way to get at the return values of the
1347 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1348 * runtime errors here, as this is just a random interpreter, not a thread.
1349 */
1133 1350
1134 /* 1351 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1352 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1353 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1354 * reason for perl_run to return. We try to exit by jumping to the
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1355 * bootstrap-time "top" top_env, as we cannot restore the "main"
1139 * coroutine as Coro has no such concept 1356 * coroutine as Coro has no such concept.
1357 * This actually isn't valid with the pthread backend, but OSes requiring
1358 * that backend are too broken to do it in a standards-compliant way.
1140 */ 1359 */
1141 PL_top_env = main_top_env; 1360 PL_top_env = main_top_env;
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1361 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1362 }
1144} 1363}
… …
1221cctx_destroy (coro_cctx *cctx) 1440cctx_destroy (coro_cctx *cctx)
1222{ 1441{
1223 if (!cctx) 1442 if (!cctx)
1224 return; 1443 return;
1225 1444
1445 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1446
1226 --cctx_count; 1447 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1448 coro_destroy (&cctx->cctx);
1228 1449
1229 /* coro_transfer creates new, empty cctx's */ 1450 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr) 1451 if (cctx->sptr)
… …
1293 /* TODO: throwing up here is considered harmful */ 1514 /* TODO: throwing up here is considered harmful */
1294 1515
1295 if (expect_true (prev != next)) 1516 if (expect_true (prev != next))
1296 { 1517 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1518 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1519 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1520
1300 if (expect_false (next->flags & CF_RUNNING))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED)) 1521 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1522 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1523
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1524#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1525 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1526 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1527#endif
… …
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1533transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1534{
1317 dSTACKLEVEL; 1535 dSTACKLEVEL;
1318 1536
1319 /* sometimes transfer is only called to set idle_sp */ 1537 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1538 if (expect_false (!prev))
1321 { 1539 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1540 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1541 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1542 }
1325 else if (expect_true (prev != next)) 1543 else if (expect_true (prev != next))
1326 { 1544 {
1327 coro_cctx *prev__cctx; 1545 coro_cctx *cctx_prev;
1328 1546
1329 if (expect_false (prev->flags & CF_NEW)) 1547 if (expect_false (prev->flags & CF_NEW))
1330 { 1548 {
1331 /* create a new empty/source context */ 1549 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1550 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1551 prev->flags |= CF_RUNNING;
1335 } 1552 }
1336 1553
1337 prev->flags &= ~CF_RUNNING; 1554 prev->flags &= ~CF_RUNNING;
… …
1343 if (expect_false (next->flags & CF_NEW)) 1560 if (expect_false (next->flags & CF_NEW))
1344 { 1561 {
1345 /* need to start coroutine */ 1562 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1563 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1564 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1565 init_perl (aTHX_ next);
1349 } 1566 }
1350 else 1567 else
1351 load_perl (aTHX_ next); 1568 load_perl (aTHX_ next);
1352 1569
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1570 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1571 if (expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1572 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1573 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1574 && !force_cctx
1360 )) 1575 ))
1361 { 1576 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1577 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1578 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1579
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1580 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1581 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1582 if (expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1583 if (expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1584 next->cctx = cctx_get (aTHX);
1372 1585
1373 cctx_put (prev__cctx); 1586 cctx_put (cctx_current);
1374 } 1587 }
1588 else
1589 prev->cctx = cctx_current;
1375 1590
1376 ++next->usecount; 1591 ++next->usecount;
1377 1592
1378 if (expect_true (!next->cctx)) 1593 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1594 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1595
1381 if (expect_false (prev__cctx != next->cctx)) 1596 next->cctx = 0;
1597
1598 if (expect_false (cctx_prev != cctx_current))
1382 { 1599 {
1383 prev__cctx->top_env = PL_top_env; 1600 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1601 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1602 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1603 }
1387 1604
1388 transfer_tail (aTHX); 1605 transfer_tail (aTHX);
1389 } 1606 }
1390} 1607}
… …
1398coro_state_destroy (pTHX_ struct coro *coro) 1615coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1616{
1400 if (coro->flags & CF_DESTROYED) 1617 if (coro->flags & CF_DESTROYED)
1401 return 0; 1618 return 0;
1402 1619
1403 if (coro->on_destroy) 1620 if (coro->on_destroy && !PL_dirty)
1404 coro->on_destroy (aTHX_ coro); 1621 coro->on_destroy (aTHX_ coro);
1405 1622
1406 coro->flags |= CF_DESTROYED; 1623 coro->flags |= CF_DESTROYED;
1407 1624
1408 if (coro->flags & CF_READY) 1625 if (coro->flags & CF_READY)
… …
1412 --coro_nready; 1629 --coro_nready;
1413 } 1630 }
1414 else 1631 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1632 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1633
1417 if (coro->mainstack && coro->mainstack != main_mainstack) 1634 if (coro->mainstack
1418 { 1635 && coro->mainstack != main_mainstack
1419 struct coro temp; 1636 && coro->slot
1420 1637 && !PL_dirty)
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro); 1638 destroy_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435 1639
1436 if (coro->next) coro->next->prev = coro->prev; 1640 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1641 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1642 if (coro == coro_first) coro_first = coro->next;
1643
1644 cctx_destroy (coro->cctx);
1645 SvREFCNT_dec (coro->startcv);
1646 SvREFCNT_dec (coro->args);
1647 SvREFCNT_dec (coro->swap_sv);
1648 SvREFCNT_dec (CORO_THROW);
1439 1649
1440 return 1; 1650 return 1;
1441} 1651}
1442 1652
1443static int 1653static int
… …
1498/** Coro ********************************************************************/ 1708/** Coro ********************************************************************/
1499 1709
1500INLINE void 1710INLINE void
1501coro_enq (pTHX_ struct coro *coro) 1711coro_enq (pTHX_ struct coro *coro)
1502{ 1712{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1713 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1714
1506INLINE SV * 1715 SvREFCNT_inc_NN (coro->hv);
1716
1717 coro->next_ready = 0;
1718 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1719 ready [1] = coro;
1720}
1721
1722INLINE struct coro *
1507coro_deq (pTHX) 1723coro_deq (pTHX)
1508{ 1724{
1509 int prio; 1725 int prio;
1510 1726
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1727 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1728 {
1513 return av_shift (coro_ready [prio]); 1729 struct coro **ready = coro_ready [prio];
1730
1731 if (ready [0])
1732 {
1733 struct coro *coro = ready [0];
1734 ready [0] = coro->next_ready;
1735 return coro;
1736 }
1737 }
1514 1738
1515 return 0; 1739 return 0;
1740}
1741
1742static void
1743invoke_sv_ready_hook_helper (void)
1744{
1745 dTHX;
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1516} 1757}
1517 1758
1518static int 1759static int
1519api_ready (pTHX_ SV *coro_sv) 1760api_ready (pTHX_ SV *coro_sv)
1520{ 1761{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1529 1763
1530 if (coro->flags & CF_READY) 1764 if (coro->flags & CF_READY)
1531 return 0; 1765 return 0;
1532 1766
1533 coro->flags |= CF_READY; 1767 coro->flags |= CF_READY;
1534 1768
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1769 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1770
1541 if (sv_hook) 1771 if (!coro_nready++)
1542 { 1772 if (coroapi.readyhook)
1543 dSP; 1773 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1774
1559 return 1; 1775 return 1;
1560} 1776}
1561 1777
1562static int 1778static int
1563api_is_ready (pTHX_ SV *coro_sv) 1779api_is_ready (pTHX_ SV *coro_sv)
1564{ 1780{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1781 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1782}
1567 1783
1784/* expects to own a reference to next->hv */
1568INLINE void 1785INLINE void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1786prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1787{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1788 SV *prev_sv = SvRV (coro_current);
1789
1610 ta->prev = SvSTATE_hv (prev_sv); 1790 ta->prev = SvSTATE_hv (prev_sv);
1791 ta->next = next;
1792
1611 TRANSFER_CHECK (*ta); 1793 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1794
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1795 SvRV_set (coro_current, (SV *)next->hv);
1615 1796
1616 free_coro_mortal (aTHX); 1797 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1798 coro_mortal = prev_sv;
1618} 1799}
1619 1800
1801static void
1802prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1803{
1804 for (;;)
1805 {
1806 struct coro *next = coro_deq (aTHX);
1807
1808 if (expect_true (next))
1809 {
1810 /* cannot transfer to destroyed coros, skip and look for next */
1811 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1812 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1813 else
1814 {
1815 next->flags &= ~CF_READY;
1816 --coro_nready;
1817
1818 prepare_schedule_to (aTHX_ ta, next);
1819 break;
1820 }
1821 }
1822 else
1823 {
1824 /* nothing to schedule: call the idle handler */
1825 if (SvROK (sv_idle)
1826 && SvOBJECT (SvRV (sv_idle)))
1827 {
1828 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1829 api_ready (aTHX_ SvRV (sv_idle));
1830 --coro_nready;
1831 }
1832 else
1833 {
1834 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1835 dSP;
1836
1837 ENTER;
1838 SAVETMPS;
1839
1840 PUSHMARK (SP);
1841 PUTBACK;
1842 call_sv (sv_idle, G_VOID | G_DISCARD);
1843
1844 FREETMPS;
1845 LEAVE;
1846 }
1847 }
1848 }
1849}
1850
1620INLINE void 1851INLINE void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 1852prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 1853{
1623 api_ready (aTHX_ coro_current); 1854 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 1855 prepare_schedule (aTHX_ ta);
… …
1643{ 1874{
1644 struct coro_transfer_args ta; 1875 struct coro_transfer_args ta;
1645 1876
1646 prepare_schedule (aTHX_ &ta); 1877 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 1878 TRANSFER (ta, 1);
1879}
1880
1881static void
1882api_schedule_to (pTHX_ SV *coro_sv)
1883{
1884 struct coro_transfer_args ta;
1885 struct coro *next = SvSTATE (coro_sv);
1886
1887 SvREFCNT_inc_NN (coro_sv);
1888 prepare_schedule_to (aTHX_ &ta, next);
1648} 1889}
1649 1890
1650static int 1891static int
1651api_cede (pTHX) 1892api_cede (pTHX)
1652{ 1893{
… …
1681static void 1922static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 1923api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 1924{
1684 struct coro *coro = SvSTATE (coro_sv); 1925 struct coro *coro = SvSTATE (coro_sv);
1685 1926
1927 if (coro->flags & CF_RUNNING)
1928 croak ("cannot enable tracing on a running coroutine, caught");
1929
1686 if (flags & CC_TRACE) 1930 if (flags & CC_TRACE)
1687 { 1931 {
1688 if (!coro->cctx) 1932 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 1933 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 1934 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 1935 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 1936
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1937 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 1938 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1939 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 1940 {
… …
1699 if (coro->flags & CF_RUNNING) 1943 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 1944 PL_runops = RUNOPS_DEFAULT;
1701 else 1945 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 1946 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 1947 }
1948}
1949
1950static void
1951coro_call_on_destroy (pTHX_ struct coro *coro)
1952{
1953 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1954 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1955
1956 if (on_destroyp)
1957 {
1958 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1959
1960 while (AvFILLp (on_destroy) >= 0)
1961 {
1962 dSP; /* don't disturb outer sp */
1963 SV *cb = av_pop (on_destroy);
1964
1965 PUSHMARK (SP);
1966
1967 if (statusp)
1968 {
1969 int i;
1970 AV *status = (AV *)SvRV (*statusp);
1971 EXTEND (SP, AvFILLp (status) + 1);
1972
1973 for (i = 0; i <= AvFILLp (status); ++i)
1974 PUSHs (AvARRAY (status)[i]);
1975 }
1976
1977 PUTBACK;
1978 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1979 }
1980 }
1981}
1982
1983static void
1984slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1985{
1986 int i;
1987 HV *hv = (HV *)SvRV (coro_current);
1988 AV *av = newAV ();
1989
1990 /* items are actually not so common, so optimise for this case */
1991 if (items)
1992 {
1993 av_extend (av, items - 1);
1994
1995 for (i = 0; i < items; ++i)
1996 av_push (av, SvREFCNT_inc_NN (arg [i]));
1997 }
1998
1999 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2000
2001 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2002 api_ready (aTHX_ sv_manager);
2003
2004 frame->prepare = prepare_schedule;
2005 frame->check = slf_check_repeat;
2006
2007 /* as a minor optimisation, we could unwind all stacks here */
2008 /* but that puts extra pressure on pp_slf, and is not worth much */
2009 /*coro_unwind_stacks (aTHX);*/
2010}
2011
2012/*****************************************************************************/
2013/* async pool handler */
2014
2015static int
2016slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2017{
2018 HV *hv = (HV *)SvRV (coro_current);
2019 struct coro *coro = (struct coro *)frame->data;
2020
2021 if (!coro->invoke_cb)
2022 return 1; /* loop till we have invoke */
2023 else
2024 {
2025 hv_store (hv, "desc", sizeof ("desc") - 1,
2026 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2027
2028 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2029
2030 {
2031 dSP;
2032 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2033 PUTBACK;
2034 }
2035
2036 SvREFCNT_dec (GvAV (PL_defgv));
2037 GvAV (PL_defgv) = coro->invoke_av;
2038 coro->invoke_av = 0;
2039
2040 return 0;
2041 }
2042}
2043
2044static void
2045slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2046{
2047 HV *hv = (HV *)SvRV (coro_current);
2048 struct coro *coro = SvSTATE_hv ((SV *)hv);
2049
2050 if (expect_true (coro->saved_deffh))
2051 {
2052 /* subsequent iteration */
2053 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2054 coro->saved_deffh = 0;
2055
2056 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2057 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2058 {
2059 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2060 coro->invoke_av = newAV ();
2061
2062 frame->prepare = prepare_nop;
2063 }
2064 else
2065 {
2066 av_clear (GvAV (PL_defgv));
2067 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2068
2069 coro->prio = 0;
2070
2071 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2072 api_trace (aTHX_ coro_current, 0);
2073
2074 frame->prepare = prepare_schedule;
2075 av_push (av_async_pool, SvREFCNT_inc (hv));
2076 }
2077 }
2078 else
2079 {
2080 /* first iteration, simply fall through */
2081 frame->prepare = prepare_nop;
2082 }
2083
2084 frame->check = slf_check_pool_handler;
2085 frame->data = (void *)coro;
2086}
2087
2088/*****************************************************************************/
2089/* rouse callback */
2090
2091#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2092
2093static void
2094coro_rouse_callback (pTHX_ CV *cv)
2095{
2096 dXSARGS;
2097 SV *data = (SV *)S_GENSUB_ARG;
2098
2099 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2100 {
2101 /* first call, set args */
2102 SV *coro = SvRV (data);
2103 AV *av = newAV ();
2104
2105 SvRV_set (data, (SV *)av);
2106
2107 /* better take a full copy of the arguments */
2108 while (items--)
2109 av_store (av, items, newSVsv (ST (items)));
2110
2111 api_ready (aTHX_ coro);
2112 SvREFCNT_dec (coro);
2113 }
2114
2115 XSRETURN_EMPTY;
2116}
2117
2118static int
2119slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2120{
2121 SV *data = (SV *)frame->data;
2122
2123 if (CORO_THROW)
2124 return 0;
2125
2126 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2127 return 1;
2128
2129 /* now push all results on the stack */
2130 {
2131 dSP;
2132 AV *av = (AV *)SvRV (data);
2133 int i;
2134
2135 EXTEND (SP, AvFILLp (av) + 1);
2136 for (i = 0; i <= AvFILLp (av); ++i)
2137 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2138
2139 /* we have stolen the elements, so set length to zero and free */
2140 AvFILLp (av) = -1;
2141 av_undef (av);
2142
2143 PUTBACK;
2144 }
2145
2146 return 0;
2147}
2148
2149static void
2150slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2151{
2152 SV *cb;
2153
2154 if (items)
2155 cb = arg [0];
2156 else
2157 {
2158 struct coro *coro = SvSTATE_current;
2159
2160 if (!coro->rouse_cb)
2161 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2162
2163 cb = sv_2mortal (coro->rouse_cb);
2164 coro->rouse_cb = 0;
2165 }
2166
2167 if (!SvROK (cb)
2168 || SvTYPE (SvRV (cb)) != SVt_PVCV
2169 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2170 croak ("Coro::rouse_wait called with illegal callback argument,");
2171
2172 {
2173 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2174 SV *data = (SV *)S_GENSUB_ARG;
2175
2176 frame->data = (void *)data;
2177 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2178 frame->check = slf_check_rouse_wait;
2179 }
2180}
2181
2182static SV *
2183coro_new_rouse_cb (pTHX)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv (hv);
2187 SV *data = newRV_inc ((SV *)hv);
2188 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2189
2190 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2191 SvREFCNT_dec (data); /* magicext increases the refcount */
2192
2193 SvREFCNT_dec (coro->rouse_cb);
2194 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2195
2196 return cb;
1704} 2197}
1705 2198
1706/*****************************************************************************/ 2199/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2200/* schedule-like-function opcode (SLF) */
1708 2201
… …
1755static void 2248static void
1756slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2249slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757{ 2250{
1758 frame->prepare = prepare_schedule; 2251 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2252 frame->check = slf_check_nop;
2253}
2254
2255static void
2256slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2257{
2258 struct coro *next = (struct coro *)slf_frame.data;
2259
2260 SvREFCNT_inc_NN (next->hv);
2261 prepare_schedule_to (aTHX_ ta, next);
2262}
2263
2264static void
2265slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2266{
2267 if (!items)
2268 croak ("Coro::schedule_to expects a coroutine argument, caught");
2269
2270 frame->data = (void *)SvSTATE (arg [0]);
2271 frame->prepare = slf_prepare_schedule_to;
2272 frame->check = slf_check_nop;
2273}
2274
2275static void
2276slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2277{
2278 api_ready (aTHX_ SvRV (coro_current));
2279
2280 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1760} 2281}
1761 2282
1762static void 2283static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2284slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2285{
… …
1835 } 2356 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2357 while (slf_frame.check (aTHX_ &slf_frame));
1837 2358
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2359 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2360
2361 /* exception handling */
2362 if (expect_false (CORO_THROW))
2363 {
2364 SV *exception = sv_2mortal (CORO_THROW);
2365
2366 CORO_THROW = 0;
2367 sv_setsv (ERRSV, exception);
2368 croak (0);
2369 }
2370
1840 /* return value handling - mostly like entersub */ 2371 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2372 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2373 if (GIMME_V == G_SCALAR)
1843 { 2374 {
1844 dSP; 2375 dSP;
… …
1850 bot [1] = *sp; 2381 bot [1] = *sp;
1851 2382
1852 SP = bot + 1; 2383 SP = bot + 1;
1853 2384
1854 PUTBACK; 2385 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2386 }
1866 2387
1867 return NORMAL; 2388 return NORMAL;
1868} 2389}
1869 2390
… …
1910 } 2431 }
1911 else 2432 else
1912 slf_argc = 0; 2433 slf_argc = 0;
1913 2434
1914 PL_op->op_ppaddr = pp_slf; 2435 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2436 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2437
1917 PL_op = (OP *)&slf_restore; 2438 PL_op = (OP *)&slf_restore;
2439}
2440
2441/*****************************************************************************/
2442/* dynamic wind */
2443
2444static void
2445on_enterleave_call (pTHX_ SV *cb)
2446{
2447 dSP;
2448
2449 PUSHSTACK;
2450
2451 PUSHMARK (SP);
2452 PUTBACK;
2453 call_sv (cb, G_VOID | G_DISCARD);
2454 SPAGAIN;
2455
2456 POPSTACK;
2457}
2458
2459static SV *
2460coro_avp_pop_and_free (pTHX_ AV **avp)
2461{
2462 AV *av = *avp;
2463 SV *res = av_pop (av);
2464
2465 if (AvFILLp (av) < 0)
2466 {
2467 *avp = 0;
2468 SvREFCNT_dec (av);
2469 }
2470
2471 return res;
2472}
2473
2474static void
2475coro_pop_on_enter (pTHX_ void *coro)
2476{
2477 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2478 SvREFCNT_dec (cb);
2479}
2480
2481static void
2482coro_pop_on_leave (pTHX_ void *coro)
2483{
2484 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2485 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2486}
1919 2487
1920/*****************************************************************************/ 2488/*****************************************************************************/
1921/* PerlIO::cede */ 2489/* PerlIO::cede */
1922 2490
… …
1991 PerlIOBuf_get_cnt, 2559 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2560 PerlIOBuf_set_ptrcnt,
1993}; 2561};
1994 2562
1995/*****************************************************************************/ 2563/*****************************************************************************/
2564/* Coro::Semaphore & Coro::Signal */
2565
2566static SV *
2567coro_waitarray_new (pTHX_ int count)
2568{
2569 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2570 AV *av = newAV ();
2571 SV **ary;
2572
2573 /* unfortunately, building manually saves memory */
2574 Newx (ary, 2, SV *);
2575 AvALLOC (av) = ary;
2576#if PERL_VERSION_ATLEAST (5,10,0)
2577 AvARRAY (av) = ary;
2578#else
2579 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2580 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2581 SvPVX ((SV *)av) = (char *)ary;
2582#endif
2583 AvMAX (av) = 1;
2584 AvFILLp (av) = 0;
2585 ary [0] = newSViv (count);
2586
2587 return newRV_noinc ((SV *)av);
2588}
2589
1996/* Coro::Semaphore */ 2590/* semaphore */
1997 2591
1998static void 2592static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2593coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2594{
2001 SV *count_sv = AvARRAY (av)[0]; 2595 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2607 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2608 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2609 cb = av_shift (av);
2016 2610
2017 if (SvOBJECT (cb)) 2611 if (SvOBJECT (cb))
2612 {
2018 api_ready (aTHX_ cb); 2613 api_ready (aTHX_ cb);
2019 else 2614 --count;
2020 croak ("callbacks not yet supported"); 2615 }
2616 else if (SvTYPE (cb) == SVt_PVCV)
2617 {
2618 dSP;
2619 PUSHMARK (SP);
2620 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2621 PUTBACK;
2622 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2623 }
2021 2624
2022 SvREFCNT_dec (cb); 2625 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2626 }
2026} 2627}
2027 2628
2028static void 2629static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2630coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2632 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2633 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2033} 2634}
2034 2635
2035static int 2636static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2637slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2638{
2038 AV *av = (AV *)frame->data; 2639 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2640 SV *count_sv = AvARRAY (av)[0];
2040 2641
2642 /* if we are about to throw, don't actually acquire the lock, just throw */
2643 if (CORO_THROW)
2644 return 0;
2041 if (SvIVX (count_sv) > 0) 2645 else if (SvIVX (count_sv) > 0)
2042 { 2646 {
2043 SvSTATE_current->on_destroy = 0; 2647 SvSTATE_current->on_destroy = 0;
2648
2649 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2650 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2651 else
2652 coro_semaphore_adjust (aTHX_ av, 0);
2653
2045 return 0; 2654 return 0;
2046 } 2655 }
2047 else 2656 else
2048 { 2657 {
2049 int i; 2658 int i;
… …
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2667 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2059 return 1; 2668 return 1;
2060 } 2669 }
2061} 2670}
2062 2671
2063static void 2672static int
2673slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2674{
2675 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2676}
2677
2678static int
2679slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2682}
2683
2684static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2685slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 2686{
2066 AV *av = (AV *)SvRV (arg [0]); 2687 AV *av = (AV *)SvRV (arg [0]);
2067 2688
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 2689 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 2690 {
2070 frame->data = (void *)av; 2691 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 2692 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 2693 }
2074 else 2694 else
2075 { 2695 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2696 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 2697
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2698 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 2699 frame->prepare = prepare_schedule;
2080 2700
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 2701 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2702 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2703 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2085 } 2704 }
2705}
2086 2706
2707static void
2708slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 2711 frame->check = slf_check_semaphore_down;
2088
2089} 2712}
2090 2713
2091/*****************************************************************************/ 2714static void
2092/* gensub: simple closure generation utility */ 2715slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 2716{
2102 CV *cv = (CV *)newSV (0); 2717 if (items >= 2)
2718 {
2719 /* callback form */
2720 AV *av = (AV *)SvRV (arg [0]);
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 2722
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 2724
2106 CvANON_on (cv); 2725 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 2726 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 2727
2111 return newRV_noinc ((SV *)cv); 2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2734 frame->check = slf_check_semaphore_wait;
2735 }
2736}
2737
2738/* signal */
2739
2740static void
2741coro_signal_wake (pTHX_ AV *av, int count)
2742{
2743 SvIVX (AvARRAY (av)[0]) = 0;
2744
2745 /* now signal count waiters */
2746 while (count > 0 && AvFILLp (av) > 0)
2747 {
2748 SV *cb;
2749
2750 /* swap first two elements so we can shift a waiter */
2751 cb = AvARRAY (av)[0];
2752 AvARRAY (av)[0] = AvARRAY (av)[1];
2753 AvARRAY (av)[1] = cb;
2754
2755 cb = av_shift (av);
2756
2757 if (SvTYPE (cb) == SVt_PVCV)
2758 {
2759 dSP;
2760 PUSHMARK (SP);
2761 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2762 PUTBACK;
2763 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2764 }
2765 else
2766 {
2767 api_ready (aTHX_ cb);
2768 sv_setiv (cb, 0); /* signal waiter */
2769 }
2770
2771 SvREFCNT_dec (cb);
2772
2773 --count;
2774 }
2775}
2776
2777static int
2778slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2779{
2780 /* if we are about to throw, also stop waiting */
2781 return SvROK ((SV *)frame->data) && !CORO_THROW;
2782}
2783
2784static void
2785slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2786{
2787 AV *av = (AV *)SvRV (arg [0]);
2788
2789 if (items >= 2)
2790 {
2791 SV *cb_cv = s_get_cv_croak (arg [1]);
2792 av_push (av, SvREFCNT_inc_NN (cb_cv));
2793
2794 if (SvIVX (AvARRAY (av)[0]))
2795 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2796
2797 frame->prepare = prepare_nop;
2798 frame->check = slf_check_nop;
2799 }
2800 else if (SvIVX (AvARRAY (av)[0]))
2801 {
2802 SvIVX (AvARRAY (av)[0]) = 0;
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else
2807 {
2808 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2809
2810 av_push (av, waiter);
2811
2812 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2813 frame->prepare = prepare_schedule;
2814 frame->check = slf_check_signal_wait;
2815 }
2112} 2816}
2113 2817
2114/*****************************************************************************/ 2818/*****************************************************************************/
2115/* Coro::AIO */ 2819/* Coro::AIO */
2116 2820
… …
2127 2831
2128static void 2832static void
2129coro_aio_callback (pTHX_ CV *cv) 2833coro_aio_callback (pTHX_ CV *cv)
2130{ 2834{
2131 dXSARGS; 2835 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 2836 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 2837 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 2838 SV *data_sv = newSV (sizeof (struct io_state));
2135 2839
2136 av_extend (state, items); 2840 av_extend (state, items - 1);
2137 2841
2138 sv_upgrade (data_sv, SVt_PV); 2842 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 2843 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 2844 SvPOK_only (data_sv);
2141 2845
… …
2166static int 2870static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 2871slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 2872{
2169 AV *state = (AV *)frame->data; 2873 AV *state = (AV *)frame->data;
2170 2874
2875 /* if we are about to throw, return early */
2876 /* this does not cancel the aio request, but at least */
2877 /* it quickly returns */
2878 if (CORO_THROW)
2879 return 0;
2880
2171 /* one element that is an RV? repeat! */ 2881 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 2882 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173 return 1; 2883 return 1;
2174 2884
2175 /* restore status */ 2885 /* restore status */
… …
2245 2955
2246 for (i = 0; i < items; ++i) 2956 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 2957 PUSHs (arg [i]);
2248 2958
2249 /* now push the callback closure */ 2959 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 2960 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 2961
2252 /* now call the AIO function - we assume our request is uncancelable */ 2962 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 2963 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 2964 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 2965 }
… …
2269 2979
2270 XSRETURN_EMPTY; 2980 XSRETURN_EMPTY;
2271} 2981}
2272 2982
2273/*****************************************************************************/ 2983/*****************************************************************************/
2984
2985#if CORO_CLONE
2986# include "clone.c"
2987#endif
2988
2989/*****************************************************************************/
2990
2991static SV *
2992coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2993{
2994 SV *coro_sv;
2995 struct coro *coro;
2996 MAGIC *mg;
2997 HV *hv;
2998 SV *cb;
2999 int i;
3000
3001 if (argc > 0)
3002 {
3003 cb = s_get_cv_croak (argv [0]);
3004
3005 if (!is_coro)
3006 {
3007 if (CvISXSUB (cb))
3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010 if (!CvROOT (cb))
3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
3014
3015 Newz (0, coro, 1, struct coro);
3016 coro->args = newAV ();
3017 coro->flags = CF_NEW;
3018
3019 if (coro_first) coro_first->prev = coro;
3020 coro->next = coro_first;
3021 coro_first = coro;
3022
3023 coro->hv = hv = newHV ();
3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025 mg->mg_flags |= MGf_DUP;
3026 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3027
3028 if (argc > 0)
3029 {
3030 av_extend (coro->args, argc + is_coro - 1);
3031
3032 if (is_coro)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = (SV *)cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040 for (i = 1; i < argc; i++)
3041 av_push (coro->args, newSVsv (argv [i]));
3042 }
3043
3044 return coro_sv;
3045}
2274 3046
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3047MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3048
2277PROTOTYPES: DISABLE 3049PROTOTYPES: DISABLE
2278 3050
… …
2283 coro_thx = PERL_GET_CONTEXT; 3055 coro_thx = PERL_GET_CONTEXT;
2284# endif 3056# endif
2285#endif 3057#endif
2286 BOOT_PAGESIZE; 3058 BOOT_PAGESIZE;
2287 3059
3060 cctx_current = cctx_new_empty ();
3061
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3062 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3063 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3064
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3065 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3066 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2311 3085
2312 { 3086 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3087 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3088
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3089 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3090 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3091
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3092 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3093 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3094 }
2323 3095
2324 coroapi.ver = CORO_API_VERSION; 3096 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3097 coroapi.rev = CORO_API_REVISION;
2326 3098
… …
2338 3110
2339 if (!svp) croak ("Time::HiRes is required"); 3111 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3112 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341 3113
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3114 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3115
3116 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3117 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2343 } 3118 }
2344 3119
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3120 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2346} 3121}
2347 3122
2348SV * 3123SV *
2349new (char *klass, ...) 3124new (SV *klass, ...)
3125 ALIAS:
3126 Coro::new = 1
2350 CODE: 3127 CODE:
2351{ 3128 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3129 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3130 RETVAL
2376 3131
2377void 3132void
2378transfer (...) 3133transfer (...)
2379 PROTOTYPE: $$ 3134 PROTOTYPE: $$
… …
2390void 3145void
2391_exit (int code) 3146_exit (int code)
2392 PROTOTYPE: $ 3147 PROTOTYPE: $
2393 CODE: 3148 CODE:
2394 _exit (code); 3149 _exit (code);
3150
3151SV *
3152clone (Coro::State coro)
3153 CODE:
3154{
3155#if CORO_CLONE
3156 struct coro *ncoro = coro_clone (aTHX_ coro);
3157 MAGIC *mg;
3158 /* TODO: too much duplication */
3159 ncoro->hv = newHV ();
3160 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3161 mg->mg_flags |= MGf_DUP;
3162 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3163#else
3164 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3165#endif
3166}
3167 OUTPUT:
3168 RETVAL
2395 3169
2396int 3170int
2397cctx_stacksize (int new_stacksize = 0) 3171cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3172 PROTOTYPE: ;$
2399 CODE: 3173 CODE:
… …
2449 eval = 1 3223 eval = 1
2450 CODE: 3224 CODE:
2451{ 3225{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3226 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3227 {
2454 struct coro temp; 3228 struct coro *current = SvSTATE_current;
2455 3229
2456 if (!(coro->flags & CF_RUNNING)) 3230 if (current != coro)
2457 { 3231 {
2458 PUTBACK; 3232 PUTBACK;
2459 save_perl (aTHX_ &temp); 3233 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3234 load_perl (aTHX_ coro);
3235 SPAGAIN;
2461 } 3236 }
2462 3237
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3238 PUSHSTACK;
3239
2469 PUSHMARK (SP); 3240 PUSHMARK (SP);
3241 PUTBACK;
2470 3242
2471 if (ix) 3243 if (ix)
2472 eval_sv (coderef, 0); 3244 eval_sv (coderef, 0);
2473 else 3245 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3246 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3247
2476 POPSTACK; 3248 POPSTACK;
2477 SPAGAIN; 3249 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3250
2483 if (!(coro->flags & CF_RUNNING)) 3251 if (current != coro)
2484 { 3252 {
3253 PUTBACK;
2485 save_perl (aTHX_ coro); 3254 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3255 load_perl (aTHX_ current);
2487 SPAGAIN; 3256 SPAGAIN;
2488 } 3257 }
2489 } 3258 }
2490} 3259}
2491 3260
… …
2495 ALIAS: 3264 ALIAS:
2496 is_ready = CF_READY 3265 is_ready = CF_READY
2497 is_running = CF_RUNNING 3266 is_running = CF_RUNNING
2498 is_new = CF_NEW 3267 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3268 is_destroyed = CF_DESTROYED
3269 is_suspended = CF_SUSPENDED
2500 CODE: 3270 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3271 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3272 OUTPUT:
2503 RETVAL 3273 RETVAL
2504 3274
… …
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3276throw (Coro::State self, SV *throw = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3277 PROTOTYPE: $;$
2508 CODE: 3278 CODE:
2509{ 3279{
2510 struct coro *current = SvSTATE_current; 3280 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3281 SV **throwp = self == current ? &CORO_THROW : &self->except;
2512 SvREFCNT_dec (*throwp); 3282 SvREFCNT_dec (*throwp);
3283 SvGETMAGIC (throw);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3284 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2514} 3285}
2515 3286
2516void 3287void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3288api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
… …
2520 3291
2521SV * 3292SV *
2522has_cctx (Coro::State coro) 3293has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3294 PROTOTYPE: $
2524 CODE: 3295 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3296 /* maybe manage the running flag differently */
3297 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3298 OUTPUT:
2527 RETVAL 3299 RETVAL
2528 3300
2529int 3301int
2530is_traced (Coro::State coro) 3302is_traced (Coro::State coro)
… …
2550 3322
2551void 3323void
2552force_cctx () 3324force_cctx ()
2553 PROTOTYPE: 3325 PROTOTYPE:
2554 CODE: 3326 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3327 cctx_current->idle_sp = 0;
2556 3328
2557void 3329void
2558swap_defsv (Coro::State self) 3330swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3331 PROTOTYPE: $
2560 ALIAS: 3332 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3340 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3341
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3342 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3343 }
2572 3344
3345void
3346cancel (Coro::State self)
3347 CODE:
3348 coro_state_destroy (aTHX_ self);
3349 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3350
3351
3352SV *
3353enable_times (int enabled = enable_times)
3354 CODE:
3355{
3356 RETVAL = boolSV (enable_times);
3357
3358 if (enabled != enable_times)
3359 {
3360 enable_times = enabled;
3361
3362 coro_times_update ();
3363 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3364 }
3365}
3366 OUTPUT:
3367 RETVAL
3368
3369void
3370times (Coro::State self)
3371 PPCODE:
3372{
3373 struct coro *current = SvSTATE (coro_current);
3374
3375 if (expect_false (current == self))
3376 {
3377 coro_times_update ();
3378 coro_times_add (SvSTATE (coro_current));
3379 }
3380
3381 EXTEND (SP, 2);
3382 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3383 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3384
3385 if (expect_false (current == self))
3386 coro_times_sub (SvSTATE (coro_current));
3387}
3388
3389void
3390swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3391 CODE:
3392{
3393 struct coro *current = SvSTATE_current;
3394
3395 if (current == coro)
3396 SWAP_SVS (current);
3397
3398 if (!coro->swap_sv)
3399 coro->swap_sv = newAV ();
3400
3401 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3402 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3403
3404 if (current == coro)
3405 SWAP_SVS (current);
3406}
3407
2573 3408
2574MODULE = Coro::State PACKAGE = Coro 3409MODULE = Coro::State PACKAGE = Coro
2575 3410
2576BOOT: 3411BOOT:
2577{ 3412{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3413 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3414 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3415 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3416 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3417 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3418 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3419 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3420 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3421 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2586 3422
3423 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3424 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3425 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3426 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3427
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3428 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3429
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3436
2599 { 3437 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3438 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3439
2602 coroapi.schedule = api_schedule; 3440 coroapi.schedule = api_schedule;
3441 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3442 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3443 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3444 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3445 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3446 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3447 coroapi.current = coro_current;
2609 3448
2610 GCoroAPI = &coroapi; 3449 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3450 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3451 SvREADONLY_on (sv);
2613 } 3452 }
2614} 3453}
3454
3455SV *
3456async (...)
3457 PROTOTYPE: &@
3458 CODE:
3459 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3460 api_ready (aTHX_ RETVAL);
3461 OUTPUT:
3462 RETVAL
3463
3464void
3465terminate (...)
3466 CODE:
3467 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2615 3468
2616void 3469void
2617schedule (...) 3470schedule (...)
2618 CODE: 3471 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3473
3474void
3475schedule_to (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3478
3479void
3480cede_to (...)
3481 CODE:
3482 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3483
2621void 3484void
2622cede (...) 3485cede (...)
2623 CODE: 3486 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3487 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3501void
2639_set_readyhook (SV *hook) 3502_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3503 PROTOTYPE: $
2641 CODE: 3504 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3505 SvREFCNT_dec (coro_readyhook);
3506 SvGETMAGIC (hook);
3507 if (SvOK (hook))
3508 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3509 coro_readyhook = newSVsv (hook);
3510 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3511 }
3512 else
3513 {
3514 coro_readyhook = 0;
3515 CORO_READYHOOK = 0;
3516 }
2644 3517
2645int 3518int
2646prio (Coro::State coro, int newprio = 0) 3519prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3520 PROTOTYPE: $;$
2648 ALIAS: 3521 ALIAS:
… …
2654 if (items > 1) 3527 if (items > 1)
2655 { 3528 {
2656 if (ix) 3529 if (ix)
2657 newprio = coro->prio - newprio; 3530 newprio = coro->prio - newprio;
2658 3531
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3532 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3533 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3534
2662 coro->prio = newprio; 3535 coro->prio = newprio;
2663 } 3536 }
2664} 3537}
2665 OUTPUT: 3538 OUTPUT:
… …
2679 CODE: 3552 CODE:
2680 RETVAL = coro_nready; 3553 RETVAL = coro_nready;
2681 OUTPUT: 3554 OUTPUT:
2682 RETVAL 3555 RETVAL
2683 3556
2684# for async_pool speedup
2685void 3557void
2686_pool_1 (SV *cb) 3558suspend (Coro::State self)
3559 PROTOTYPE: $
2687 CODE: 3560 CODE:
2688{ 3561 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 3562
2696 if (!invoke) 3563void
3564resume (Coro::State self)
3565 PROTOTYPE: $
3566 CODE:
3567 self->flags &= ~CF_SUSPENDED;
3568
3569void
3570_pool_handler (...)
3571 CODE:
3572 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3573
3574void
3575async_pool (SV *cv, ...)
3576 PROTOTYPE: &@
3577 PPCODE:
3578{
3579 HV *hv = (HV *)av_pop (av_async_pool);
3580 AV *av = newAV ();
3581 SV *cb = ST (0);
3582 int i;
3583
3584 av_extend (av, items - 2);
3585 for (i = 1; i < items; ++i)
3586 av_push (av, SvREFCNT_inc_NN (ST (i)));
3587
3588 if ((SV *)hv == &PL_sv_undef)
2697 { 3589 {
2698 SV *old = PL_diehook; 3590 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 3591 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 3592 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 3593 }
2703 3594
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 3595 {
2717 av_fill (defav, len - 1); 3596 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 3597
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3598 assert (!coro->invoke_cb);
3599 assert (!coro->invoke_av);
3600 coro->invoke_cb = SvREFCNT_inc (cb);
3601 coro->invoke_av = av;
2720 } 3602 }
3603
3604 api_ready (aTHX_ (SV *)hv);
3605
3606 if (GIMME_V != G_VOID)
3607 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3608 else
3609 SvREFCNT_dec (hv);
2721} 3610}
3611
3612SV *
3613rouse_cb ()
3614 PROTOTYPE:
3615 CODE:
3616 RETVAL = coro_new_rouse_cb (aTHX);
3617 OUTPUT:
3618 RETVAL
2722 3619
2723void 3620void
2724_pool_2 (SV *cb) 3621rouse_wait (...)
3622 PROTOTYPE: ;$
3623 PPCODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3625
3626void
3627on_enter (SV *block)
3628 ALIAS:
3629 on_leave = 1
3630 PROTOTYPE: &
2725 CODE: 3631 CODE:
2726{ 3632{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 3633 struct coro *coro = SvSTATE_current;
3634 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 3635
2730 sv_setsv (cb, &PL_sv_undef); 3636 block = s_get_cv_croak (block);
2731 3637
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3638 if (!*avp)
2733 coro->saved_deffh = 0; 3639 *avp = newAV ();
2734 3640
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3641 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 3642
2744 av_clear (GvAV (PL_defgv)); 3643 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 3644 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 3645
2748 coro->prio = 0; 3646 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 3647 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3648 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 3649}
2755 3650
2756 3651
2757MODULE = Coro::State PACKAGE = PerlIO::cede 3652MODULE = Coro::State PACKAGE = PerlIO::cede
2758 3653
… …
2761 3656
2762 3657
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 3658MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 3659
2765SV * 3660SV *
2766new (SV *klass, SV *count_ = 0) 3661new (SV *klass, SV *count = 0)
2767 CODE: 3662 CODE:
2768{ 3663{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3664 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 3665
2773 /* unfortunately, building manually saves memory */ 3666 if (count)
2774 Newx (ary, 2, SV *); 3667 {
2775 AvALLOC (av) = ary; 3668 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 3669
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3670 if (SvOK (count))
3671 semcnt = SvIV (count);
3672 }
3673
3674 RETVAL = sv_bless (
3675 coro_waitarray_new (aTHX_ semcnt),
3676 GvSTASH (CvGV (cv))
3677 );
2782} 3678}
3679 OUTPUT:
3680 RETVAL
3681
3682# helper for Coro::Channel and others
3683SV *
3684_alloc (int count)
3685 CODE:
3686 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 3687 OUTPUT:
2784 RETVAL 3688 RETVAL
2785 3689
2786SV * 3690SV *
2787count (SV *self) 3691count (SV *self)
… …
2796 adjust = 1 3700 adjust = 1
2797 CODE: 3701 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 3703
2800void 3704void
2801down (SV *self) 3705down (...)
2802 CODE: 3706 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3707 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3708
3709void
3710wait (...)
3711 CODE:
3712 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 3713
2805void 3714void
2806try (SV *self) 3715try (SV *self)
2807 PPCODE: 3716 PPCODE:
2808{ 3717{
… …
2820 XSRETURN_NO; 3729 XSRETURN_NO;
2821} 3730}
2822 3731
2823void 3732void
2824waiters (SV *self) 3733waiters (SV *self)
2825 CODE: 3734 PPCODE:
2826{ 3735{
2827 AV *av = (AV *)SvRV (self); 3736 AV *av = (AV *)SvRV (self);
3737 int wcount = AvFILLp (av) + 1 - 1;
2828 3738
2829 if (GIMME_V == G_SCALAR) 3739 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3740 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 3741 else
2832 { 3742 {
2833 int i; 3743 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 3744 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 3745 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3746 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 3747 }
2838} 3748}
3749
3750MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3751
3752void
3753_may_delete (SV *sem, int count, int extra_refs)
3754 PPCODE:
3755{
3756 AV *av = (AV *)SvRV (sem);
3757
3758 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3759 && AvFILLp (av) == 0 /* no waiters, just count */
3760 && SvIV (AvARRAY (av)[0]) == count)
3761 XSRETURN_YES;
3762
3763 XSRETURN_NO;
3764}
3765
3766MODULE = Coro::State PACKAGE = Coro::Signal
3767
3768SV *
3769new (SV *klass)
3770 CODE:
3771 RETVAL = sv_bless (
3772 coro_waitarray_new (aTHX_ 0),
3773 GvSTASH (CvGV (cv))
3774 );
3775 OUTPUT:
3776 RETVAL
3777
3778void
3779wait (...)
3780 CODE:
3781 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3782
3783void
3784broadcast (SV *self)
3785 CODE:
3786{
3787 AV *av = (AV *)SvRV (self);
3788 coro_signal_wake (aTHX_ av, AvFILLp (av));
3789}
3790
3791void
3792send (SV *self)
3793 CODE:
3794{
3795 AV *av = (AV *)SvRV (self);
3796
3797 if (AvFILLp (av))
3798 coro_signal_wake (aTHX_ av, 1);
3799 else
3800 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3801}
3802
3803IV
3804awaited (SV *self)
3805 CODE:
3806 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3807 OUTPUT:
3808 RETVAL
2839 3809
2840 3810
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 3811MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 3812
2843BOOT: 3813BOOT:
… …
2871 3841
2872void 3842void
2873_register (char *target, char *proto, SV *req) 3843_register (char *target, char *proto, SV *req)
2874 CODE: 3844 CODE:
2875{ 3845{
2876 HV *st; 3846 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 3847 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 3848 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 3849 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3850 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 3851}
2884 3852
3853MODULE = Coro::State PACKAGE = Coro::Select
3854
3855void
3856patch_pp_sselect ()
3857 CODE:
3858 if (!coro_old_pp_sselect)
3859 {
3860 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3861 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3862 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3863 }
3864
3865void
3866unpatch_pp_sselect ()
3867 CODE:
3868 if (coro_old_pp_sselect)
3869 {
3870 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3871 coro_old_pp_sselect = 0;
3872 }
3873
3874

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