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Comparing Coro/Coro/State.xs (file contents):
Revision 1.271 by root, Fri Nov 14 07:35:32 2008 UTC vs.
Revision 1.385 by root, Sat Feb 19 05:42:46 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
21
22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
16 25
17#ifdef WIN32 26#ifdef WIN32
18# undef setjmp 27# undef setjmp
19# undef longjmp 28# undef longjmp
20# undef _exit 29# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 30# define setjmp _setjmp /* deep magic */
22#else 31#else
23# include <inttypes.h> /* most portable stdint.h */ 32# include <inttypes.h> /* most portable stdint.h */
24#endif 33#endif
25 34
26#ifdef HAVE_MMAP 35#ifdef HAVE_MMAP
… …
51#endif 60#endif
52 61
53/* the maximum number of idle cctx that will be pooled */ 62/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 63static int cctx_max_idle = 4;
55 64
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 65#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 66# undef CORO_STACKGUARD
108#endif 67#endif
109 68
110#ifndef CORO_STACKGUARD 69#ifndef CORO_STACKGUARD
… …
117#endif 76#endif
118 77
119/* The next macros try to return the current stack pointer, in an as 78/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 79 * portable way as possible. */
121#if __GNUC__ >= 4 80#if __GNUC__ >= 4
81# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 82# define STACKLEVEL __builtin_frame_address (0)
123#else 83#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 84# define dSTACKLEVEL volatile void *stacklevel
85# define STACKLEVEL ((void *)&stacklevel)
125#endif 86#endif
126 87
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 88#define IN_DESTRUCT PL_dirty
128 89
129#if __GNUC__ >= 3 90#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 91# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 92# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 93# define INLINE static inline
133#else 94#else
134# define attribute(x) 95# define attribute(x)
135# define expect(expr,value) (expr) 96# define expect(expr,value) (expr)
136# define INLINE static 97# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 101#define expect_true(expr) expect ((expr) != 0, 1)
141 102
142#define NOINLINE attribute ((noinline)) 103#define NOINLINE attribute ((noinline))
143 104
144#include "CoroAPI.h" 105#include "CoroAPI.h"
106#define GCoroAPI (&coroapi) /* very sneaky */
145 107
146#ifdef USE_ITHREADS 108#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 109# if CORO_PTHREAD
152static void *coro_thx; 110static void *coro_thx;
153# endif 111# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 112#endif
161 113
162# undef LOCK 114#ifdef __linux
163# define LOCK (void)0 115# include <time.h> /* for timespec */
164# undef UNLOCK 116# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 117# ifdef SYS_clock_gettime
166 118# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 119# define CORO_CLOCK_MONOTONIC 1
168struct io_state 120# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 121# endif
170 AV *res; 122#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 123
177static double (*nvtime)(); /* so why doesn't it take void? */ 124static double (*nvtime)(); /* so why doesn't it take void? */
125static void (*u2time)(pTHX_ UV ret[2]);
126
127/* we hijack an hopefully unused CV flag for our purposes */
128#define CVf_SLF 0x4000
129static OP *pp_slf (pTHX);
178 130
179static U32 cctx_gen; 131static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 132static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 133static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 134static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 135static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 136static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 137static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 138
188struct transfer_args 139static AV *av_destroy; /* destruction queue */
189{ 140static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 141static SV *sv_idle; /* $Coro::idle */
191};
192 142
193static GV *irsgv; /* $/ */ 143static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 144static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 145static SV *rv_diehook;
196static SV *rv_warnhook; 146static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 147static HV *hv_sig; /* %SIG */
198 148
199/* async_pool helper stuff */ 149/* async_pool helper stuff */
200static SV *sv_pool_rss; 150static SV *sv_pool_rss;
201static SV *sv_pool_size; 151static SV *sv_pool_size;
152static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 153static AV *av_async_pool; /* idle pool */
154static SV *sv_Coro; /* class string */
155static CV *cv_pool_handler;
203 156
204/* Coro::AnyEvent */ 157/* Coro::AnyEvent */
205static SV *sv_activity; 158static SV *sv_activity;
159
160/* enable processtime/realtime profiling */
161static char enable_times;
162typedef U32 coro_ts[2];
163static coro_ts time_real, time_cpu;
164static char times_valid;
206 165
207static struct coro_cctx *cctx_first; 166static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle;
209 168
210enum { 169enum {
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 174 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 176};
218 177
219/* this is a structure representing a c-level coroutine */ 178/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 179typedef struct coro_cctx
180{
221 struct coro_cctx *next; 181 struct coro_cctx *next;
222 182
223 /* the stack */ 183 /* the stack */
224 void *sptr; 184 void *sptr;
225 size_t ssize; 185 size_t ssize;
… …
235 int valgrind_id; 195 int valgrind_id;
236#endif 196#endif
237 unsigned char flags; 197 unsigned char flags;
238} coro_cctx; 198} coro_cctx;
239 199
200coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
240enum { 204enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
245}; 210};
246 211
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 212/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 213typedef struct
214{
249 SV *defsv; 215 SV *defsv;
250 AV *defav; 216 AV *defav;
251 SV *errsv; 217 SV *errsv;
252 SV *irsgv; 218 SV *irsgv;
219 HV *hinthv;
253#define VAR(name,type) type name; 220#define VAR(name,type) type name;
254# include "state.h" 221# include "state.h"
255#undef VAR 222#undef VAR
256} perl_slots; 223} perl_slots;
257 224
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 225#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 226
260/* this is a structure representing a perl-level coroutine */ 227/* this is a structure representing a perl-level coroutine */
261struct coro { 228struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 230 coro_cctx *cctx;
264 231
265 /* process data */ 232 /* ready queue */
233 struct coro *next_ready;
234
235 /* state data */
236 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 237 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
268 239
240 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
273 246
274 /* statistics */ 247 /* statistics */
275 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
276 249
277 /* coro process data */ 250 /* coro process data */
278 int prio; 251 int prio;
279 SV *throw; /* exception to be thrown */ 252 SV *except; /* exception to be thrown */
253 SV *rouse_cb;
280 254
281 /* async_pool */ 255 /* async_pool */
282 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
283 269
284 /* linked list */ 270 /* linked list */
285 struct coro *next, *prev; 271 struct coro *next, *prev;
286}; 272};
287 273
288typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
290 276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the mainr easonw e don't support windows process emulation */
280static struct CoroSLF slf_frame; /* the current slf frame */
281
291/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
292 283
293#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
299 290
300/* for Coro.pm */ 291/* for Coro.pm */
301static SV *coro_current; 292static SV *coro_current;
302static SV *coro_readyhook; 293static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 296static struct coro *coro_first;
305#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
298
299/** Coro::Select ************************************************************/
300
301static OP *(*coro_old_pp_sselect) (pTHX);
302static SV *coro_select_select;
303
304/* horrible hack, but if it works... */
305static OP *
306coro_pp_sselect (pTHX)
307{
308 dSP;
309 PUSHMARK (SP - 4); /* fake argument list */
310 XPUSHs (coro_select_select);
311 PUTBACK;
312
313 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
314 PL_op->op_flags |= OPf_STACKED;
315 PL_op->op_private = 0;
316 return PL_ppaddr [OP_ENTERSUB](aTHX);
317}
306 318
307/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
308 320
309static SV * 321static SV *
310coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 346 get_hv (name, create);
335#endif 347#endif
336 return get_hv (name, create); 348 return get_hv (name, create);
337} 349}
338 350
351INLINE void
352coro_times_update ()
353{
354#ifdef coro_clock_gettime
355 struct timespec ts;
356
357 ts.tv_sec = ts.tv_nsec = 0;
358 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
359 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
360
361 ts.tv_sec = ts.tv_nsec = 0;
362 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
363 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
364#else
365 dTHX;
366 UV tv[2];
367
368 u2time (aTHX_ tv);
369 time_real [0] = tv [0];
370 time_real [1] = tv [1] * 1000;
371#endif
372}
373
374INLINE void
375coro_times_add (struct coro *c)
376{
377 c->t_real [1] += time_real [1];
378 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
379 c->t_real [0] += time_real [0];
380
381 c->t_cpu [1] += time_cpu [1];
382 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
383 c->t_cpu [0] += time_cpu [0];
384}
385
386INLINE void
387coro_times_sub (struct coro *c)
388{
389 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
390 c->t_real [1] -= time_real [1];
391 c->t_real [0] -= time_real [0];
392
393 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
394 c->t_cpu [1] -= time_cpu [1];
395 c->t_cpu [0] -= time_cpu [0];
396}
397
398/*****************************************************************************/
399/* magic glue */
400
401#define CORO_MAGIC_type_cv 26
402#define CORO_MAGIC_type_state PERL_MAGIC_ext
403
404#define CORO_MAGIC_NN(sv, type) \
405 (expect_true (SvMAGIC (sv)->mg_type == type) \
406 ? SvMAGIC (sv) \
407 : mg_find (sv, type))
408
409#define CORO_MAGIC(sv, type) \
410 (expect_true (SvMAGIC (sv)) \
411 ? CORO_MAGIC_NN (sv, type) \
412 : 0)
413
414#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
415#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
416
417INLINE struct coro *
418SvSTATE_ (pTHX_ SV *coro)
419{
420 HV *stash;
421 MAGIC *mg;
422
423 if (SvROK (coro))
424 coro = SvRV (coro);
425
426 if (expect_false (SvTYPE (coro) != SVt_PVHV))
427 croak ("Coro::State object required");
428
429 stash = SvSTASH (coro);
430 if (expect_false (stash != coro_stash && stash != coro_state_stash))
431 {
432 /* very slow, but rare, check */
433 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
434 croak ("Coro::State object required");
435 }
436
437 mg = CORO_MAGIC_state (coro);
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
442
443/* faster than SvSTATE, but expects a coroutine hv */
444#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
445#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
446
447/*****************************************************************************/
448/* padlist management and caching */
449
339static AV * 450static AV *
340coro_clone_padlist (pTHX_ CV *cv) 451coro_derive_padlist (pTHX_ CV *cv)
341{ 452{
342 AV *padlist = CvPADLIST (cv); 453 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 454 AV *newpadlist, *newpad;
344 455
345 newpadlist = newAV (); 456 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 461 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 462#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 463 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 464 --AvFILLp (padlist);
354 465
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 466 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 467 av_store (newpadlist, 1, (SV *)newpad);
357 468
358 return newpadlist; 469 return newpadlist;
359} 470}
360 471
361static void 472static void
362free_padlist (pTHX_ AV *padlist) 473free_padlist (pTHX_ AV *padlist)
363{ 474{
364 /* may be during global destruction */ 475 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 476 if (!IN_DESTRUCT)
366 { 477 {
367 I32 i = AvFILLp (padlist); 478 I32 i = AvFILLp (padlist);
368 while (i >= 0) 479
480 while (i > 0) /* special-case index 0 */
369 { 481 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 482 /* we try to be extra-careful here */
371 if (svp) 483 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 484 I32 j = AvFILLp (av);
373 SV *sv; 485
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 486 while (j >= 0)
487 SvREFCNT_dec (AvARRAY (av)[j--]);
488
489 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 490 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 491 }
380 492
493 SvREFCNT_dec (AvARRAY (padlist)[0]);
494
495 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 496 SvREFCNT_dec ((SV*)padlist);
382 } 497 }
383} 498}
384 499
385static int 500static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 501coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 502{
388 AV *padlist; 503 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 504 AV *av = (AV *)mg->mg_obj;
505
506 /* perl manages to free our internal AV and _then_ call us */
507 if (IN_DESTRUCT)
508 return 0;
390 509
391 /* casting is fun. */ 510 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 511 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 512 free_padlist (aTHX_ padlist);
394 513
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 514 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 515
397 return 0; 516 return 0;
398} 517}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 518
403static MGVTBL coro_cv_vtbl = { 519static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 520 0, 0, 0, 0,
405 coro_cv_free 521 coro_cv_free
406}; 522};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 523
444/* the next two functions merely cache the padlists */ 524/* the next two functions merely cache the padlists */
445static void 525static void
446get_padlist (pTHX_ CV *cv) 526get_padlist (pTHX_ CV *cv)
447{ 527{
… …
453 else 533 else
454 { 534 {
455#if CORO_PREFER_PERL_FUNCTIONS 535#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 536 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 537 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 538 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 539 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 540 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 541 SvREFCNT_dec (cp);
462#else 542#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 543 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 544#endif
465 } 545 }
466} 546}
467 547
468static void 548static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 555 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 556
477 av = (AV *)mg->mg_obj; 557 av = (AV *)mg->mg_obj;
478 558
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 559 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 560 av_extend (av, AvFILLp (av) + 1);
481 561
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 562 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 563}
484 564
485/** load & save, init *******************************************************/ 565/** load & save, init *******************************************************/
566
567/* swap sv heads, at least logically */
568static void
569swap_svs (pTHX_ Coro__State c)
570{
571 int i;
572
573 for (i = 0; i <= AvFILLp (c->swap_sv); )
574 {
575 SV *a = AvARRAY (c->swap_sv)[i++];
576 SV *b = AvARRAY (c->swap_sv)[i++];
577
578 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
579 SV tmp;
580
581 /* swap sv_any */
582 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
583
584 /* swap sv_flags */
585 SvFLAGS (&tmp) = SvFLAGS (a);
586 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
587 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
588
589#if PERL_VERSION_ATLEAST (5,10,0)
590 /* perl 5.10 complicates this _quite_ a bit, but it also is
591 * much faster, so no quarrels here. alternatively, we could
592 * sv_upgrade to avoid this.
593 */
594 {
595 /* swap sv_u */
596 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
597
598 /* if SvANY points to the head, we need to adjust the pointers,
599 * as the pointer for a still points to b, and maybe vice versa.
600 */
601 #define svany_in_head(type) \
602 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
603
604 if (svany_in_head (SvTYPE (a)))
605 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
606
607 if (svany_in_head (SvTYPE (b)))
608 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
609 }
610#endif
611 }
612}
613
614#define SWAP_SVS(coro) \
615 if (expect_false ((coro)->swap_sv)) \
616 swap_svs (aTHX_ (coro))
617
618static void
619on_enterleave_call (pTHX_ SV *cb);
486 620
487static void 621static void
488load_perl (pTHX_ Coro__State c) 622load_perl (pTHX_ Coro__State c)
489{ 623{
490 perl_slots *slot = c->slot; 624 perl_slots *slot = c->slot;
491 c->slot = 0; 625 c->slot = 0;
492 626
493 PL_mainstack = c->mainstack; 627 PL_mainstack = c->mainstack;
494 628
495 GvSV (PL_defgv) = slot->defsv; 629 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 630 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 631 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 632 GvSV (irsgv) = slot->irsgv;
633 GvHV (PL_hintgv) = slot->hinthv;
499 634
500 #define VAR(name,type) PL_ ## name = slot->name; 635 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 636 # include "state.h"
502 #undef VAR 637 #undef VAR
503 638
… …
514 CvPADLIST (cv) = (AV *)POPs; 649 CvPADLIST (cv) = (AV *)POPs;
515 } 650 }
516 651
517 PUTBACK; 652 PUTBACK;
518 } 653 }
654
655 slf_frame = c->slf_frame;
656 CORO_THROW = c->except;
657
658 if (expect_false (enable_times))
659 {
660 if (expect_false (!times_valid))
661 coro_times_update ();
662
663 coro_times_sub (c);
664 }
665
666 if (expect_false (c->on_enter))
667 {
668 int i;
669
670 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
671 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
672 }
673
674 SWAP_SVS (c);
519} 675}
520 676
521static void 677static void
522save_perl (pTHX_ Coro__State c) 678save_perl (pTHX_ Coro__State c)
523{ 679{
680 SWAP_SVS (c);
681
682 if (expect_false (c->on_leave))
683 {
684 int i;
685
686 for (i = AvFILLp (c->on_leave); i >= 0; --i)
687 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
688 }
689
690 times_valid = 0;
691
692 if (expect_false (enable_times))
693 {
694 coro_times_update (); times_valid = 1;
695 coro_times_add (c);
696 }
697
698 c->except = CORO_THROW;
699 c->slf_frame = slf_frame;
700
524 { 701 {
525 dSP; 702 dSP;
526 I32 cxix = cxstack_ix; 703 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 704 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 705 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 715 {
539 while (expect_true (cxix >= 0)) 716 while (expect_true (cxix >= 0))
540 { 717 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 718 PERL_CONTEXT *cx = &ccstk[cxix--];
542 719
543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 720 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
544 { 721 {
545 CV *cv = cx->blk_sub.cv; 722 CV *cv = cx->blk_sub.cv;
546 723
547 if (expect_true (CvDEPTH (cv))) 724 if (expect_true (CvDEPTH (cv)))
548 { 725 {
… …
572 /* we manually unroll here, as usually 2 slots is enough */ 749 /* we manually unroll here, as usually 2 slots is enough */
573 if (SLOT_COUNT >= 1) CXINC; 750 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC; 751 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC; 752 if (SLOT_COUNT >= 3) CXINC;
576 { 753 {
577 int i; 754 unsigned int i;
578 for (i = 3; i < SLOT_COUNT; ++i) 755 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC; 756 CXINC;
580 } 757 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 758 cxstack_ix -= SLOT_COUNT; /* undo allocation */
582 759
583 c->mainstack = PL_mainstack; 760 c->mainstack = PL_mainstack;
584 761
585 { 762 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 763 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 764
588 slot->defav = GvAV (PL_defgv); 765 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 766 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 767 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 768 slot->irsgv = GvSV (irsgv);
769 slot->hinthv = GvHV (PL_hintgv);
592 770
593 #define VAR(name,type) slot->name = PL_ ## name; 771 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 772 # include "state.h"
595 #undef VAR 773 #undef VAR
596 } 774 }
597} 775}
598 776
599/* 777/*
600 * allocate various perl stacks. This is an exact copy 778 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 779 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 780 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 781 * not usually need a lot of stackspace.
604 */ 782 */
605#if CORO_PREFER_PERL_FUNCTIONS 783#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 784# define coro_init_stacks(thx) init_stacks ()
607#else 785#else
608static void 786static void
609coro_init_stacks (pTHX) 787coro_init_stacks (pTHX)
610{ 788{
611 PL_curstackinfo = new_stackinfo(32, 8); 789 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 852#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 853 Safefree (PL_retstack);
676#endif 854#endif
677} 855}
678 856
857#define CORO_RSS \
858 rss += sizeof (SYM (curstackinfo)); \
859 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
860 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
861 rss += SYM (tmps_max) * sizeof (SV *); \
862 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
863 rss += SYM (scopestack_max) * sizeof (I32); \
864 rss += SYM (savestack_max) * sizeof (ANY);
865
679static size_t 866static size_t
680coro_rss (pTHX_ struct coro *coro) 867coro_rss (pTHX_ struct coro *coro)
681{ 868{
682 size_t rss = sizeof (*coro); 869 size_t rss = sizeof (*coro);
683 870
684 if (coro->mainstack) 871 if (coro->mainstack)
685 { 872 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 873 if (coro->flags & CF_RUNNING)
690 { 874 {
691 slot = &tmp_slot; 875 #define SYM(sym) PL_ ## sym
692 876 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 877 #undef SYM
696 } 878 }
697 else 879 else
698 slot = coro->slot;
699
700 if (slot)
701 { 880 {
702 rss += sizeof (slot->curstackinfo); 881 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 882 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 883 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 884 }
714 } 885 }
715 886
716 return rss; 887 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 888}
745 889
746/** coroutine stack handling ************************************************/ 890/** coroutine stack handling ************************************************/
747 891
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 892static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 901#endif
758 902
759/* 903/*
760 * This overrides the default magic get method of %SIG elements. 904 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 905 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide 906 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 907 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 908 */
768static int 909static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 910coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 911{
771 const char *s = MgPV_nolen_const (mg); 912 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 965 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 966
826 if (svp) 967 if (svp)
827 { 968 {
828 SV *old = *svp; 969 SV *old = *svp;
829 *svp = newSVsv (sv); 970 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 971 SvREFCNT_dec (old);
831 return 0; 972 return 0;
832 } 973 }
833 } 974 }
834 975
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 976 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 977}
837 978
838static void 979static void
980prepare_nop (pTHX_ struct coro_transfer_args *ta)
981{
982 /* kind of mega-hacky, but works */
983 ta->next = ta->prev = (struct coro *)ta;
984}
985
986static int
987slf_check_nop (pTHX_ struct CoroSLF *frame)
988{
989 return 0;
990}
991
992static int
993slf_check_repeat (pTHX_ struct CoroSLF *frame)
994{
995 return 1;
996}
997
998static UNOP init_perl_op;
999
1000static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 1001init_perl (pTHX_ struct coro *coro)
840{ 1002{
841 /* 1003 /*
842 * emulate part of the perl startup here. 1004 * emulate part of the perl startup here.
843 */ 1005 */
844 coro_init_stacks (aTHX); 1006 coro_init_stacks (aTHX);
845 1007
846 PL_runops = RUNOPS_DEFAULT; 1008 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1009 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1010 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1011 PL_comppad = 0;
1012 PL_comppad_name = 0;
1013 PL_comppad_name_fill = 0;
1014 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1015 PL_curpm = 0;
851 PL_curpad = 0; 1016 PL_curpad = 0;
852 PL_localizing = 0; 1017 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1018 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1019#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1020 PL_parser = 0;
857#endif 1021#endif
1022 PL_hints = 0;
858 1023
859 /* recreate the die/warn hooks */ 1024 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1025 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1026 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 1027
863 GvSV (PL_defgv) = newSV (0); 1028 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1029 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1030 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1031 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1032 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 1033 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1034 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1035
870 { 1036 {
871 dSP; 1037 dSP;
872 UNOP myop; 1038 UNOP myop;
873 1039
874 Zero (&myop, 1, UNOP); 1040 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 1041 myop.op_next = Nullop;
1042 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 1043 myop.op_flags = OPf_WANT_VOID;
877 1044
878 PUSHMARK (SP); 1045 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1046 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 1047 PUTBACK;
881 PL_op = (OP *)&myop; 1048 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1049 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 1050 }
885 1051
886 /* this newly created coroutine might be run on an existing cctx which most 1052 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1053 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 1054 */
890 SLF_HEAD; 1055 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 1056 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 1057
1058 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1059 init_perl_op.op_next = PL_op;
1060 init_perl_op.op_type = OP_ENTERSUB;
1061 init_perl_op.op_ppaddr = pp_slf;
1062 /* no flags etc. required, as an init function won't be called */
1063
1064 PL_op = (OP *)&init_perl_op;
1065
1066 /* copy throw, in case it was set before init_perl */
1067 CORO_THROW = coro->except;
1068
1069 SWAP_SVS (coro);
1070
1071 if (expect_false (enable_times))
1072 {
1073 coro_times_update ();
1074 coro_times_sub (coro);
1075 }
1076}
1077
893static void 1078static void
894coro_destruct (pTHX_ struct coro *coro) 1079coro_unwind_stacks (pTHX)
895{ 1080{
896 if (!IN_DESTRUCT) 1081 if (!IN_DESTRUCT)
897 { 1082 {
898 /* restore all saved variables and stuff */ 1083 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1084 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1092 POPSTACK_TO (PL_mainstack);
908 1093
909 /* unwind main stack */ 1094 /* unwind main stack */
910 dounwind (-1); 1095 dounwind (-1);
911 } 1096 }
1097}
912 1098
913 SvREFCNT_dec (GvSV (PL_defgv)); 1099static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1100destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1101{
916 SvREFCNT_dec (PL_defoutgv); 1102 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1103
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1104 {
1105 struct coro *current = SvSTATE_current;
1106
1107 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1108
1109 save_perl (aTHX_ current);
1110 load_perl (aTHX_ coro);
1111
1112 coro_unwind_stacks (aTHX);
1113 coro_destruct_stacks (aTHX);
1114
1115 /* restore swapped sv's */
1116 SWAP_SVS (coro);
1117
1118 // now save some sv's to be free'd later
1119 svf [0] = GvSV (PL_defgv);
1120 svf [1] = (SV *)GvAV (PL_defgv);
1121 svf [2] = GvSV (PL_errgv);
1122 svf [3] = (SV *)PL_defoutgv;
1123 svf [4] = PL_rs;
1124 svf [5] = GvSV (irsgv);
1125 svf [6] = (SV *)GvHV (PL_hintgv);
1126 svf [7] = PL_diehook;
1127 svf [8] = PL_warnhook;
1128 assert (9 == sizeof (svf) / sizeof (*svf));
1129
1130 load_perl (aTHX_ current);
1131 }
1132
1133 {
1134 unsigned int i;
1135
1136 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1137 SvREFCNT_dec (svf [i]);
1138
923 SvREFCNT_dec (coro->saved_deffh); 1139 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1140 SvREFCNT_dec (coro->rouse_cb);
925 1141 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1142 SvREFCNT_dec (coro->invoke_av);
1143 }
927} 1144}
928 1145
929INLINE void 1146INLINE void
930free_coro_mortal (pTHX) 1147free_coro_mortal (pTHX)
931{ 1148{
… …
939static int 1156static int
940runops_trace (pTHX) 1157runops_trace (pTHX)
941{ 1158{
942 COP *oldcop = 0; 1159 COP *oldcop = 0;
943 int oldcxix = -2; 1160 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1161
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1162 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1163 {
949 PERL_ASYNC_CHECK (); 1164 PERL_ASYNC_CHECK ();
950 1165
951 if (cctx->flags & CC_TRACE_ALL) 1166 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1167 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1168 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1169 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1170 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1171 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1172 AV *av = newAV (); /* return values */
958 SV **cb; 1173 SV **cb;
… …
995 1210
996 if (PL_curcop != &PL_compiling) 1211 if (PL_curcop != &PL_compiling)
997 { 1212 {
998 SV **cb; 1213 SV **cb;
999 1214
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1215 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1216 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1217 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1218
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1219 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1220 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1221 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1222 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1223 SV *fullname = sv_2mortal (newSV (0));
1010 1224
1011 if (isGV (gv)) 1225 if (isGV (gv))
… …
1016 SAVETMPS; 1230 SAVETMPS;
1017 EXTEND (SP, 3); 1231 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1232 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1233 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1234 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1235 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1236 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1237 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1238 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1239 SPAGAIN;
1026 FREETMPS; 1240 FREETMPS;
… …
1029 } 1243 }
1030 1244
1031 oldcxix = cxstack_ix; 1245 oldcxix = cxstack_ix;
1032 } 1246 }
1033 1247
1034 if (cctx->flags & CC_TRACE_LINE) 1248 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1249 {
1036 dSP; 1250 dSP;
1037 1251
1038 PL_runops = RUNOPS_DEFAULT; 1252 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1253 ENTER;
… …
1058 1272
1059 TAINT_NOT; 1273 TAINT_NOT;
1060 return 0; 1274 return 0;
1061} 1275}
1062 1276
1277static struct CoroSLF cctx_ssl_frame;
1278
1063static void 1279static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1280slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1281{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1282 ta->prev = 0;
1068} 1283}
1069 1284
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1285static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1286slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1287{
1073/* also initialises PL_top_env */ 1288 *frame = cctx_ssl_frame;
1289
1290 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1291}
1292
1293/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1294static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1295cctx_prepare (pTHX)
1076{ 1296{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1297 PL_top_env = &PL_start_env;
1081 1298
1082 if (cctx->flags & CC_TRACE) 1299 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1300 PL_runops = runops_trace;
1084 1301
1085 Zero (&myop, 1, UNOP); 1302 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1303 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1304 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1305 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1306
1089 PUSHMARK (SP); 1307 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1308 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1309
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1310 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1311 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1312}
1098 1313
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1314/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1315INLINE void
1101transfer_tail (pTHX) 1316transfer_tail (pTHX)
1102{ 1317{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1318 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1319}
1119 1320
1120/* 1321/*
1121 * this is a _very_ stripped down perl interpreter ;) 1322 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1323 */
… …
1129# endif 1330# endif
1130#endif 1331#endif
1131 { 1332 {
1132 dTHX; 1333 dTHX;
1133 1334
1134 /* we are the alternative tail to pp_set_stacklevel */ 1335 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1336 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1337 /* PL_nop = PL_nop->op_next */
1140 1338
1141 /* inject a fake subroutine call to cctx_init */ 1339 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1340 cctx_prepare (aTHX);
1143 1341
1144 /* cctx_run is the alternative tail of transfer() */ 1342 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1343 transfer_tail (aTHX);
1146 1344
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1345 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1346 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1347 perl_run (PL_curinterp);
1348 /*
1349 * Unfortunately, there is no way to get at the return values of the
1350 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1351 * runtime errors here, as this is just a random interpreter, not a thread.
1352 */
1150 1353
1151 /* 1354 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1355 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1356 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1357 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1358 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1359 * coroutine as Coro has no such concept.
1360 * This actually isn't valid with the pthread backend, but OSes requiring
1361 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1362 */
1158 PL_top_env = main_top_env; 1363 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1364 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1365 }
1161} 1366}
… …
1238cctx_destroy (coro_cctx *cctx) 1443cctx_destroy (coro_cctx *cctx)
1239{ 1444{
1240 if (!cctx) 1445 if (!cctx)
1241 return; 1446 return;
1242 1447
1448 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1449
1243 --cctx_count; 1450 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1451 coro_destroy (&cctx->cctx);
1245 1452
1246 /* coro_transfer creates new, empty cctx's */ 1453 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1454 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1512/** coroutine switching *****************************************************/
1306 1513
1307static void 1514static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1515transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1516{
1517 /* TODO: throwing up here is considered harmful */
1518
1310 if (expect_true (prev != next)) 1519 if (expect_true (prev != next))
1311 { 1520 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1521 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1522 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1523
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED)) 1524 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1525 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1526
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1527#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1528 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1529 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1530#endif
1325 } 1531 }
1326} 1532}
1327 1533
1328/* always use the TRANSFER macro */ 1534/* always use the TRANSFER macro */
1329static void NOINLINE 1535static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1536transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1537{
1332 dSTACKLEVEL; 1538 dSTACKLEVEL;
1333 1539
1334 /* sometimes transfer is only called to set idle_sp */ 1540 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1541 if (expect_false (!prev))
1336 { 1542 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1543 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1544 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1545 }
1340 else if (expect_true (prev != next)) 1546 else if (expect_true (prev != next))
1341 { 1547 {
1342 coro_cctx *prev__cctx; 1548 coro_cctx *cctx_prev;
1343 1549
1344 if (expect_false (prev->flags & CF_NEW)) 1550 if (expect_false (prev->flags & CF_NEW))
1345 { 1551 {
1346 /* create a new empty/source context */ 1552 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1553 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1554 prev->flags |= CF_RUNNING;
1350 } 1555 }
1351 1556
1352 prev->flags &= ~CF_RUNNING; 1557 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1558 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1559
1357 /* first get rid of the old state */ 1560 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1561 save_perl (aTHX_ prev);
1359 1562
1360 if (expect_false (next->flags & CF_NEW)) 1563 if (expect_false (next->flags & CF_NEW))
1361 { 1564 {
1362 /* need to start coroutine */ 1565 /* need to start coroutine */
1363 next->flags &= ~CF_NEW; 1566 next->flags &= ~CF_NEW;
1364 /* setup coroutine call */ 1567 /* setup coroutine call */
1365 coro_setup (aTHX_ next); 1568 init_perl (aTHX_ next);
1366 } 1569 }
1367 else 1570 else
1368 load_perl (aTHX_ next); 1571 load_perl (aTHX_ next);
1369 1572
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1573 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1574 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1575 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1576 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1577 && !force_cctx
1377 )) 1578 ))
1378 { 1579 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1580 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1581 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1582
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1583 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1584 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1585 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1586 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1587 next->cctx = cctx_get (aTHX);
1389 1588
1390 cctx_put (prev__cctx); 1589 cctx_put (cctx_current);
1391 } 1590 }
1591 else
1592 prev->cctx = cctx_current;
1392 1593
1393 ++next->usecount; 1594 ++next->usecount;
1394 1595
1395 if (expect_true (!next->cctx)) 1596 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1597 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1598
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1599 next->cctx = 0;
1399 transfer_next = next;
1400 1600
1401 if (expect_false (prev__cctx != next->cctx)) 1601 if (expect_false (cctx_prev != cctx_current))
1402 { 1602 {
1403 prev__cctx->top_env = PL_top_env; 1603 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1604 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1605 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1606 }
1407 1607
1408 transfer_tail (aTHX); 1608 transfer_tail (aTHX);
1409 } 1609 }
1410} 1610}
… …
1417static int 1617static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1618coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1619{
1420 if (coro->flags & CF_DESTROYED) 1620 if (coro->flags & CF_DESTROYED)
1421 return 0; 1621 return 0;
1622
1623 if (coro->on_destroy && !PL_dirty)
1624 coro->on_destroy (aTHX_ coro);
1422 1625
1423 coro->flags |= CF_DESTROYED; 1626 coro->flags |= CF_DESTROYED;
1424 1627
1425 if (coro->flags & CF_READY) 1628 if (coro->flags & CF_READY)
1426 { 1629 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1630 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1631 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1632 --coro_nready;
1431 UNLOCK;
1432 } 1633 }
1433 else 1634 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1635 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1636
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1637 if (coro->mainstack
1437 { 1638 && coro->mainstack != main_mainstack
1438 struct coro temp; 1639 && coro->slot
1439 1640 && !PL_dirty)
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1641 destroy_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452
1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->args);
1455 1642
1456 if (coro->next) coro->next->prev = coro->prev; 1643 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1644 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1645 if (coro == coro_first) coro_first = coro->next;
1646
1647 cctx_destroy (coro->cctx);
1648 SvREFCNT_dec (coro->startcv);
1649 SvREFCNT_dec (coro->args);
1650 SvREFCNT_dec (coro->swap_sv);
1651 SvREFCNT_dec (CORO_THROW);
1459 1652
1460 return 1; 1653 return 1;
1461} 1654}
1462 1655
1463static int 1656static int
… …
1497# define MGf_DUP 0 1690# define MGf_DUP 0
1498#endif 1691#endif
1499}; 1692};
1500 1693
1501static void 1694static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1695prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1696{
1504 ta->prev = SvSTATE (prev_sv); 1697 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1698 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1699 TRANSFER_CHECK (*ta);
1507} 1700}
1508 1701
1509static void 1702static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1703api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1704{
1512 struct transfer_args ta; 1705 struct coro_transfer_args ta;
1513 1706
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1707 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1708 TRANSFER (ta, 1);
1516} 1709}
1517 1710
1518/** Coro ********************************************************************/ 1711/** Coro ********************************************************************/
1519 1712
1520static void 1713INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1714coro_enq (pTHX_ struct coro *coro)
1522{ 1715{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1716 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1717
1526static SV * 1718 SvREFCNT_inc_NN (coro->hv);
1719
1720 coro->next_ready = 0;
1721 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1722 ready [1] = coro;
1723}
1724
1725INLINE struct coro *
1527coro_deq (pTHX) 1726coro_deq (pTHX)
1528{ 1727{
1529 int prio; 1728 int prio;
1530 1729
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1730 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1731 {
1533 return av_shift (coro_ready [prio]); 1732 struct coro **ready = coro_ready [prio];
1733
1734 if (ready [0])
1735 {
1736 struct coro *coro = ready [0];
1737 ready [0] = coro->next_ready;
1738 return coro;
1739 }
1740 }
1534 1741
1535 return 0; 1742 return 0;
1743}
1744
1745static void
1746invoke_sv_ready_hook_helper (void)
1747{
1748 dTHX;
1749 dSP;
1750
1751 ENTER;
1752 SAVETMPS;
1753
1754 PUSHMARK (SP);
1755 PUTBACK;
1756 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1757
1758 FREETMPS;
1759 LEAVE;
1536} 1760}
1537 1761
1538static int 1762static int
1539api_ready (pTHX_ SV *coro_sv) 1763api_ready (pTHX_ SV *coro_sv)
1540{ 1764{
1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1544
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1765 struct coro *coro = SvSTATE (coro_sv);
1549 1766
1550 if (coro->flags & CF_READY) 1767 if (coro->flags & CF_READY)
1551 return 0; 1768 return 0;
1552 1769
1553 coro->flags |= CF_READY; 1770 coro->flags |= CF_READY;
1554 1771
1555 LOCK; 1772 coro_enq (aTHX_ coro);
1556 1773
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1774 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1775 if (coroapi.readyhook)
1559 1776 coroapi.readyhook ();
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1561 ++coro_nready;
1562
1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1583 1777
1584 return 1; 1778 return 1;
1585} 1779}
1586 1780
1587static int 1781static int
1588api_is_ready (pTHX_ SV *coro_sv) 1782api_is_ready (pTHX_ SV *coro_sv)
1589{ 1783{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1784 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1785}
1592 1786
1787/* expects to own a reference to next->hv */
1593INLINE void 1788INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1789prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1790{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1791 SV *prev_sv = SvRV (coro_current);
1792
1640 ta->prev = SvSTATE (prev_sv); 1793 ta->prev = SvSTATE_hv (prev_sv);
1794 ta->next = next;
1795
1641 TRANSFER_CHECK (*ta); 1796 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1797
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1798 SvRV_set (coro_current, (SV *)next->hv);
1645 1799
1646 LOCK;
1647 free_coro_mortal (aTHX); 1800 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1801 coro_mortal = prev_sv;
1649 UNLOCK; 1802}
1803
1804static void
1805prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1806{
1807 for (;;)
1808 {
1809 struct coro *next = coro_deq (aTHX);
1810
1811 if (expect_true (next))
1812 {
1813 /* cannot transfer to destroyed coros, skip and look for next */
1814 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1815 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1816 else
1817 {
1818 next->flags &= ~CF_READY;
1819 --coro_nready;
1820
1821 prepare_schedule_to (aTHX_ ta, next);
1822 break;
1823 }
1824 }
1825 else
1826 {
1827 /* nothing to schedule: call the idle handler */
1828 if (SvROK (sv_idle)
1829 && SvOBJECT (SvRV (sv_idle)))
1830 {
1831 if (SvRV (sv_idle) == SvRV (coro_current))
1832 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1833
1834 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1835 api_ready (aTHX_ SvRV (sv_idle));
1836 --coro_nready;
1837 }
1838 else
1839 {
1840 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1841 dSP;
1842
1843 ENTER;
1844 SAVETMPS;
1845
1846 PUSHMARK (SP);
1847 PUTBACK;
1848 call_sv (sv_idle, G_VOID | G_DISCARD);
1849
1850 FREETMPS;
1851 LEAVE;
1852 }
1853 }
1854 }
1650} 1855}
1651 1856
1652INLINE void 1857INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1858prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1859{
1655 api_ready (aTHX_ coro_current); 1860 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1861 prepare_schedule (aTHX_ ta);
1657} 1862}
1658 1863
1659static void 1864INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1865prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1866{
1662 SV *prev = SvRV (coro_current); 1867 SV *prev = SvRV (coro_current);
1663 1868
1664 if (coro_nready) 1869 if (coro_nready)
1665 { 1870 {
1666 prepare_schedule (aTHX_ ta); 1871 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1872 api_ready (aTHX_ prev);
1668 } 1873 }
1669 else 1874 else
1670 ta->prev = ta->next = SvSTATE (prev); 1875 prepare_nop (aTHX_ ta);
1671} 1876}
1672 1877
1673static void 1878static void
1674api_schedule (pTHX) 1879api_schedule (pTHX)
1675{ 1880{
1676 struct transfer_args ta; 1881 struct coro_transfer_args ta;
1677 1882
1678 prepare_schedule (aTHX_ &ta); 1883 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1884 TRANSFER (ta, 1);
1680} 1885}
1681 1886
1887static void
1888api_schedule_to (pTHX_ SV *coro_sv)
1889{
1890 struct coro_transfer_args ta;
1891 struct coro *next = SvSTATE (coro_sv);
1892
1893 SvREFCNT_inc_NN (coro_sv);
1894 prepare_schedule_to (aTHX_ &ta, next);
1895}
1896
1682static int 1897static int
1683api_cede (pTHX) 1898api_cede (pTHX)
1684{ 1899{
1685 struct transfer_args ta; 1900 struct coro_transfer_args ta;
1686 1901
1687 prepare_cede (aTHX_ &ta); 1902 prepare_cede (aTHX_ &ta);
1688 1903
1689 if (expect_true (ta.prev != ta.next)) 1904 if (expect_true (ta.prev != ta.next))
1690 { 1905 {
… …
1698static int 1913static int
1699api_cede_notself (pTHX) 1914api_cede_notself (pTHX)
1700{ 1915{
1701 if (coro_nready) 1916 if (coro_nready)
1702 { 1917 {
1703 struct transfer_args ta; 1918 struct coro_transfer_args ta;
1704 1919
1705 prepare_cede_notself (aTHX_ &ta); 1920 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1921 TRANSFER (ta, 1);
1707 return 1; 1922 return 1;
1708 } 1923 }
… …
1713static void 1928static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1929api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1930{
1716 struct coro *coro = SvSTATE (coro_sv); 1931 struct coro *coro = SvSTATE (coro_sv);
1717 1932
1933 if (coro->flags & CF_RUNNING)
1934 croak ("cannot enable tracing on a running coroutine, caught");
1935
1718 if (flags & CC_TRACE) 1936 if (flags & CC_TRACE)
1719 { 1937 {
1720 if (!coro->cctx) 1938 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1939 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1940 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1941 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1942
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1943 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1944 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1945 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1946 {
… …
1733 else 1951 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1952 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1953 }
1736} 1954}
1737 1955
1738#if 0 1956static void
1957coro_call_on_destroy (pTHX_ struct coro *coro)
1958{
1959 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1960 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1961
1962 if (on_destroyp)
1963 {
1964 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1965
1966 while (AvFILLp (on_destroy) >= 0)
1967 {
1968 dSP; /* don't disturb outer sp */
1969 SV *cb = av_pop (on_destroy);
1970
1971 PUSHMARK (SP);
1972
1973 if (statusp)
1974 {
1975 int i;
1976 AV *status = (AV *)SvRV (*statusp);
1977 EXTEND (SP, AvFILLp (status) + 1);
1978
1979 for (i = 0; i <= AvFILLp (status); ++i)
1980 PUSHs (AvARRAY (status)[i]);
1981 }
1982
1983 PUTBACK;
1984 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1985 }
1986 }
1987}
1988
1989static void
1990slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1991{
1992 int i;
1993 HV *hv = (HV *)SvRV (coro_current);
1994 AV *av = newAV ();
1995
1996 /* items are actually not so common, so optimise for this case */
1997 if (items)
1998 {
1999 av_extend (av, items - 1);
2000
2001 for (i = 0; i < items; ++i)
2002 av_push (av, SvREFCNT_inc_NN (arg [i]));
2003 }
2004
2005 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2006
2007 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2008 api_ready (aTHX_ sv_manager);
2009
2010 frame->prepare = prepare_schedule;
2011 frame->check = slf_check_repeat;
2012
2013 /* as a minor optimisation, we could unwind all stacks here */
2014 /* but that puts extra pressure on pp_slf, and is not worth much */
2015 /*coro_unwind_stacks (aTHX);*/
2016}
2017
2018/*****************************************************************************/
2019/* async pool handler */
2020
1739static int 2021static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2022slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 2023{
1742 AV *padlist; 2024 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 2025 struct coro *coro = (struct coro *)frame->data;
1744 2026
1745 abort (); 2027 if (!coro->invoke_cb)
2028 return 1; /* loop till we have invoke */
2029 else
2030 {
2031 hv_store (hv, "desc", sizeof ("desc") - 1,
2032 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2033
2034 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2035
2036 {
2037 dSP;
2038 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2039 PUTBACK;
2040 }
2041
2042 SvREFCNT_dec (GvAV (PL_defgv));
2043 GvAV (PL_defgv) = coro->invoke_av;
2044 coro->invoke_av = 0;
2045
2046 return 0;
2047 }
2048}
2049
2050static void
2051slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2052{
2053 HV *hv = (HV *)SvRV (coro_current);
2054 struct coro *coro = SvSTATE_hv ((SV *)hv);
2055
2056 if (expect_true (coro->saved_deffh))
2057 {
2058 /* subsequent iteration */
2059 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2060 coro->saved_deffh = 0;
2061
2062 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2063 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2064 {
2065 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2066 coro->invoke_av = newAV ();
2067
2068 frame->prepare = prepare_nop;
2069 }
2070 else
2071 {
2072 av_clear (GvAV (PL_defgv));
2073 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2074
2075 coro->prio = 0;
2076
2077 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2078 api_trace (aTHX_ coro_current, 0);
2079
2080 frame->prepare = prepare_schedule;
2081 av_push (av_async_pool, SvREFCNT_inc (hv));
2082 }
2083 }
2084 else
2085 {
2086 /* first iteration, simply fall through */
2087 frame->prepare = prepare_nop;
2088 }
2089
2090 frame->check = slf_check_pool_handler;
2091 frame->data = (void *)coro;
2092}
2093
2094/*****************************************************************************/
2095/* rouse callback */
2096
2097#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2098
2099static void
2100coro_rouse_callback (pTHX_ CV *cv)
2101{
2102 dXSARGS;
2103 SV *data = (SV *)S_GENSUB_ARG;
2104
2105 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2106 {
2107 /* first call, set args */
2108 SV *coro = SvRV (data);
2109 AV *av = newAV ();
2110
2111 SvRV_set (data, (SV *)av);
2112
2113 /* better take a full copy of the arguments */
2114 while (items--)
2115 av_store (av, items, newSVsv (ST (items)));
2116
2117 api_ready (aTHX_ coro);
2118 SvREFCNT_dec (coro);
2119 }
2120
2121 XSRETURN_EMPTY;
2122}
2123
2124static int
2125slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2126{
2127 SV *data = (SV *)frame->data;
2128
2129 if (CORO_THROW)
2130 return 0;
2131
2132 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2133 return 1;
2134
2135 /* now push all results on the stack */
2136 {
2137 dSP;
2138 AV *av = (AV *)SvRV (data);
2139 int i;
2140
2141 EXTEND (SP, AvFILLp (av) + 1);
2142 for (i = 0; i <= AvFILLp (av); ++i)
2143 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2144
2145 /* we have stolen the elements, so set length to zero and free */
2146 AvFILLp (av) = -1;
2147 av_undef (av);
2148
2149 PUTBACK;
2150 }
1746 2151
1747 return 0; 2152 return 0;
1748} 2153}
1749 2154
1750static MGVTBL coro_gensub_vtbl = { 2155static void
1751 0, 0, 0, 0, 2156slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2157{
1753}; 2158 SV *cb;
1754#endif 2159
2160 if (items)
2161 cb = arg [0];
2162 else
2163 {
2164 struct coro *coro = SvSTATE_current;
2165
2166 if (!coro->rouse_cb)
2167 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2168
2169 cb = sv_2mortal (coro->rouse_cb);
2170 coro->rouse_cb = 0;
2171 }
2172
2173 if (!SvROK (cb)
2174 || SvTYPE (SvRV (cb)) != SVt_PVCV
2175 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2176 croak ("Coro::rouse_wait called with illegal callback argument,");
2177
2178 {
2179 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2180 SV *data = (SV *)S_GENSUB_ARG;
2181
2182 frame->data = (void *)data;
2183 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2184 frame->check = slf_check_rouse_wait;
2185 }
2186}
2187
2188static SV *
2189coro_new_rouse_cb (pTHX)
2190{
2191 HV *hv = (HV *)SvRV (coro_current);
2192 struct coro *coro = SvSTATE_hv (hv);
2193 SV *data = newRV_inc ((SV *)hv);
2194 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2195
2196 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2197 SvREFCNT_dec (data); /* magicext increases the refcount */
2198
2199 SvREFCNT_dec (coro->rouse_cb);
2200 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2201
2202 return cb;
2203}
2204
2205/*****************************************************************************/
2206/* schedule-like-function opcode (SLF) */
2207
2208static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2209static const CV *slf_cv;
2210static SV **slf_argv;
2211static int slf_argc, slf_arga; /* count, allocated */
2212static I32 slf_ax; /* top of stack, for restore */
2213
2214/* this restores the stack in the case we patched the entersub, to */
2215/* recreate the stack frame as perl will on following calls */
2216/* since entersub cleared the stack */
2217static OP *
2218pp_restore (pTHX)
2219{
2220 int i;
2221 SV **SP = PL_stack_base + slf_ax;
2222
2223 PUSHMARK (SP);
2224
2225 EXTEND (SP, slf_argc + 1);
2226
2227 for (i = 0; i < slf_argc; ++i)
2228 PUSHs (sv_2mortal (slf_argv [i]));
2229
2230 PUSHs ((SV *)CvGV (slf_cv));
2231
2232 RETURNOP (slf_restore.op_first);
2233}
2234
2235static void
2236slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2237{
2238 SV **arg = (SV **)slf_frame.data;
2239
2240 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2241}
2242
2243static void
2244slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2245{
2246 if (items != 2)
2247 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2248
2249 frame->prepare = slf_prepare_transfer;
2250 frame->check = slf_check_nop;
2251 frame->data = (void *)arg; /* let's hope it will stay valid */
2252}
2253
2254static void
2255slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2256{
2257 frame->prepare = prepare_schedule;
2258 frame->check = slf_check_nop;
2259}
2260
2261static void
2262slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2263{
2264 struct coro *next = (struct coro *)slf_frame.data;
2265
2266 SvREFCNT_inc_NN (next->hv);
2267 prepare_schedule_to (aTHX_ ta, next);
2268}
2269
2270static void
2271slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2272{
2273 if (!items)
2274 croak ("Coro::schedule_to expects a coroutine argument, caught");
2275
2276 frame->data = (void *)SvSTATE (arg [0]);
2277 frame->prepare = slf_prepare_schedule_to;
2278 frame->check = slf_check_nop;
2279}
2280
2281static void
2282slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 api_ready (aTHX_ SvRV (coro_current));
2285
2286 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2287}
2288
2289static void
2290slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 frame->prepare = prepare_cede;
2293 frame->check = slf_check_nop;
2294}
2295
2296static void
2297slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 frame->prepare = prepare_cede_notself;
2300 frame->check = slf_check_nop;
2301}
2302
2303/*
2304 * these not obviously related functions are all rolled into one
2305 * function to increase chances that they all will call transfer with the same
2306 * stack offset
2307 * SLF stands for "schedule-like-function".
2308 */
2309static OP *
2310pp_slf (pTHX)
2311{
2312 I32 checkmark; /* mark SP to see how many elements check has pushed */
2313
2314 /* set up the slf frame, unless it has already been set-up */
2315 /* the latter happens when a new coro has been started */
2316 /* or when a new cctx was attached to an existing coroutine */
2317 if (expect_true (!slf_frame.prepare))
2318 {
2319 /* first iteration */
2320 dSP;
2321 SV **arg = PL_stack_base + TOPMARK + 1;
2322 int items = SP - arg; /* args without function object */
2323 SV *gv = *sp;
2324
2325 /* do a quick consistency check on the "function" object, and if it isn't */
2326 /* for us, divert to the real entersub */
2327 if (SvTYPE (gv) != SVt_PVGV
2328 || !GvCV (gv)
2329 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2330 return PL_ppaddr[OP_ENTERSUB](aTHX);
2331
2332 if (!(PL_op->op_flags & OPf_STACKED))
2333 {
2334 /* ampersand-form of call, use @_ instead of stack */
2335 AV *av = GvAV (PL_defgv);
2336 arg = AvARRAY (av);
2337 items = AvFILLp (av) + 1;
2338 }
2339
2340 /* now call the init function, which needs to set up slf_frame */
2341 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2342 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2343
2344 /* pop args */
2345 SP = PL_stack_base + POPMARK;
2346
2347 PUTBACK;
2348 }
2349
2350 /* now that we have a slf_frame, interpret it! */
2351 /* we use a callback system not to make the code needlessly */
2352 /* complicated, but so we can run multiple perl coros from one cctx */
2353
2354 do
2355 {
2356 struct coro_transfer_args ta;
2357
2358 slf_frame.prepare (aTHX_ &ta);
2359 TRANSFER (ta, 0);
2360
2361 checkmark = PL_stack_sp - PL_stack_base;
2362 }
2363 while (slf_frame.check (aTHX_ &slf_frame));
2364
2365 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2366
2367 /* exception handling */
2368 if (expect_false (CORO_THROW))
2369 {
2370 SV *exception = sv_2mortal (CORO_THROW);
2371
2372 CORO_THROW = 0;
2373 sv_setsv (ERRSV, exception);
2374 croak (0);
2375 }
2376
2377 /* return value handling - mostly like entersub */
2378 /* make sure we put something on the stack in scalar context */
2379 if (GIMME_V == G_SCALAR)
2380 {
2381 dSP;
2382 SV **bot = PL_stack_base + checkmark;
2383
2384 if (sp == bot) /* too few, push undef */
2385 bot [1] = &PL_sv_undef;
2386 else if (sp != bot + 1) /* too many, take last one */
2387 bot [1] = *sp;
2388
2389 SP = bot + 1;
2390
2391 PUTBACK;
2392 }
2393
2394 return NORMAL;
2395}
2396
2397static void
2398api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2399{
2400 int i;
2401 SV **arg = PL_stack_base + ax;
2402 int items = PL_stack_sp - arg + 1;
2403
2404 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2405
2406 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2407 && PL_op->op_ppaddr != pp_slf)
2408 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2409
2410 CvFLAGS (cv) |= CVf_SLF;
2411 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2412 slf_cv = cv;
2413
2414 /* we patch the op, and then re-run the whole call */
2415 /* we have to put the same argument on the stack for this to work */
2416 /* and this will be done by pp_restore */
2417 slf_restore.op_next = (OP *)&slf_restore;
2418 slf_restore.op_type = OP_CUSTOM;
2419 slf_restore.op_ppaddr = pp_restore;
2420 slf_restore.op_first = PL_op;
2421
2422 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2423
2424 if (PL_op->op_flags & OPf_STACKED)
2425 {
2426 if (items > slf_arga)
2427 {
2428 slf_arga = items;
2429 Safefree (slf_argv);
2430 New (0, slf_argv, slf_arga, SV *);
2431 }
2432
2433 slf_argc = items;
2434
2435 for (i = 0; i < items; ++i)
2436 slf_argv [i] = SvREFCNT_inc (arg [i]);
2437 }
2438 else
2439 slf_argc = 0;
2440
2441 PL_op->op_ppaddr = pp_slf;
2442 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2443
2444 PL_op = (OP *)&slf_restore;
2445}
2446
2447/*****************************************************************************/
2448/* dynamic wind */
2449
2450static void
2451on_enterleave_call (pTHX_ SV *cb)
2452{
2453 dSP;
2454
2455 PUSHSTACK;
2456
2457 PUSHMARK (SP);
2458 PUTBACK;
2459 call_sv (cb, G_VOID | G_DISCARD);
2460 SPAGAIN;
2461
2462 POPSTACK;
2463}
2464
2465static SV *
2466coro_avp_pop_and_free (pTHX_ AV **avp)
2467{
2468 AV *av = *avp;
2469 SV *res = av_pop (av);
2470
2471 if (AvFILLp (av) < 0)
2472 {
2473 *avp = 0;
2474 SvREFCNT_dec (av);
2475 }
2476
2477 return res;
2478}
2479
2480static void
2481coro_pop_on_enter (pTHX_ void *coro)
2482{
2483 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2484 SvREFCNT_dec (cb);
2485}
2486
2487static void
2488coro_pop_on_leave (pTHX_ void *coro)
2489{
2490 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2491 on_enterleave_call (aTHX_ sv_2mortal (cb));
2492}
1755 2493
1756/*****************************************************************************/ 2494/*****************************************************************************/
1757/* PerlIO::cede */ 2495/* PerlIO::cede */
1758 2496
1759typedef struct 2497typedef struct
… …
1827 PerlIOBuf_get_cnt, 2565 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2566 PerlIOBuf_set_ptrcnt,
1829}; 2567};
1830 2568
1831/*****************************************************************************/ 2569/*****************************************************************************/
2570/* Coro::Semaphore & Coro::Signal */
1832 2571
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2572static SV *
1843pp_restore (pTHX) 2573coro_waitarray_new (pTHX_ int count)
1844{ 2574{
1845 dSP; 2575 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2576 AV *av = newAV ();
2577 SV **ary;
1846 2578
2579 /* unfortunately, building manually saves memory */
2580 Newx (ary, 2, SV *);
2581 AvALLOC (av) = ary;
2582#if PERL_VERSION_ATLEAST (5,10,0)
2583 AvARRAY (av) = ary;
2584#else
2585 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2586 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2587 SvPVX ((SV *)av) = (char *)ary;
2588#endif
2589 AvMAX (av) = 1;
2590 AvFILLp (av) = 0;
2591 ary [0] = newSViv (count);
2592
2593 return newRV_noinc ((SV *)av);
2594}
2595
2596/* semaphore */
2597
2598static void
2599coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2600{
2601 SV *count_sv = AvARRAY (av)[0];
2602 IV count = SvIVX (count_sv);
2603
2604 count += adjust;
2605 SvIVX (count_sv) = count;
2606
2607 /* now wake up as many waiters as are expected to lock */
2608 while (count > 0 && AvFILLp (av) > 0)
2609 {
2610 SV *cb;
2611
2612 /* swap first two elements so we can shift a waiter */
2613 AvARRAY (av)[0] = AvARRAY (av)[1];
2614 AvARRAY (av)[1] = count_sv;
2615 cb = av_shift (av);
2616
2617 if (SvOBJECT (cb))
2618 {
2619 api_ready (aTHX_ cb);
2620 --count;
2621 }
2622 else if (SvTYPE (cb) == SVt_PVCV)
2623 {
2624 dSP;
1847 PUSHMARK (SP); 2625 PUSHMARK (SP);
2626 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2627 PUTBACK;
2628 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2629 }
1848 2630
1849 EXTEND (SP, 3); 2631 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2632 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2633}
1856 2634
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2635static void
2636coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2637{
2638 /* call $sem->adjust (0) to possibly wake up some other waiters */
2639 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2640}
1858 2641
1859enum { 2642static int
1860 CORO_SLF_CUSTOM = 0, 2643slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2644{
1862 CORO_SLF_TRANSFER = 2 2645 AV *av = (AV *)frame->data;
2646 SV *count_sv = AvARRAY (av)[0];
2647
2648 /* if we are about to throw, don't actually acquire the lock, just throw */
2649 if (CORO_THROW)
2650 return 0;
2651 else if (SvIVX (count_sv) > 0)
2652 {
2653 SvSTATE_current->on_destroy = 0;
2654
2655 if (acquire)
2656 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657 else
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2660 return 0;
2661 }
2662 else
2663 {
2664 int i;
2665 /* if we were woken up but can't down, we look through the whole */
2666 /* waiters list and only add us if we aren't in there already */
2667 /* this avoids some degenerate memory usage cases */
2668
2669 for (i = 1; i <= AvFILLp (av); ++i)
2670 if (AvARRAY (av)[i] == SvRV (coro_current))
2671 return 1;
2672
2673 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2674 return 1;
2675 }
2676}
2677
2678static int
2679slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2682}
2683
2684static int
2685slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2686{
2687 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2688}
2689
2690static void
2691slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2692{
2693 AV *av = (AV *)SvRV (arg [0]);
2694
2695 if (SvIVX (AvARRAY (av)[0]) > 0)
2696 {
2697 frame->data = (void *)av;
2698 frame->prepare = prepare_nop;
2699 }
2700 else
2701 {
2702 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2703
2704 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2705 frame->prepare = prepare_schedule;
2706
2707 /* to avoid race conditions when a woken-up coro gets terminated */
2708 /* we arrange for a temporary on_destroy that calls adjust (0) */
2709 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2710 }
2711}
2712
2713static void
2714slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2715{
2716 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2717 frame->check = slf_check_semaphore_down;
2718}
2719
2720static void
2721slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2722{
2723 if (items >= 2)
2724 {
2725 /* callback form */
2726 AV *av = (AV *)SvRV (arg [0]);
2727 SV *cb_cv = s_get_cv_croak (arg [1]);
2728
2729 av_push (av, SvREFCNT_inc_NN (cb_cv));
2730
2731 if (SvIVX (AvARRAY (av)[0]) > 0)
2732 coro_semaphore_adjust (aTHX_ av, 0);
2733
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2740 frame->check = slf_check_semaphore_wait;
2741 }
2742}
2743
2744/* signal */
2745
2746static void
2747coro_signal_wake (pTHX_ AV *av, int count)
2748{
2749 SvIVX (AvARRAY (av)[0]) = 0;
2750
2751 /* now signal count waiters */
2752 while (count > 0 && AvFILLp (av) > 0)
2753 {
2754 SV *cb;
2755
2756 /* swap first two elements so we can shift a waiter */
2757 cb = AvARRAY (av)[0];
2758 AvARRAY (av)[0] = AvARRAY (av)[1];
2759 AvARRAY (av)[1] = cb;
2760
2761 cb = av_shift (av);
2762
2763 if (SvTYPE (cb) == SVt_PVCV)
2764 {
2765 dSP;
2766 PUSHMARK (SP);
2767 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2768 PUTBACK;
2769 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2770 }
2771 else
2772 {
2773 api_ready (aTHX_ cb);
2774 sv_setiv (cb, 0); /* signal waiter */
2775 }
2776
2777 SvREFCNT_dec (cb);
2778
2779 --count;
2780 }
2781}
2782
2783static int
2784slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2785{
2786 /* if we are about to throw, also stop waiting */
2787 return SvROK ((SV *)frame->data) && !CORO_THROW;
2788}
2789
2790static void
2791slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2792{
2793 AV *av = (AV *)SvRV (arg [0]);
2794
2795 if (items >= 2)
2796 {
2797 SV *cb_cv = s_get_cv_croak (arg [1]);
2798 av_push (av, SvREFCNT_inc_NN (cb_cv));
2799
2800 if (SvIVX (AvARRAY (av)[0]))
2801 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2802
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else if (SvIVX (AvARRAY (av)[0]))
2807 {
2808 SvIVX (AvARRAY (av)[0]) = 0;
2809 frame->prepare = prepare_nop;
2810 frame->check = slf_check_nop;
2811 }
2812 else
2813 {
2814 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2815
2816 av_push (av, waiter);
2817
2818 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2819 frame->prepare = prepare_schedule;
2820 frame->check = slf_check_signal_wait;
2821 }
2822}
2823
2824/*****************************************************************************/
2825/* Coro::AIO */
2826
2827#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2828
2829/* helper storage struct */
2830struct io_state
2831{
2832 int errorno;
2833 I32 laststype; /* U16 in 5.10.0 */
2834 int laststatval;
2835 Stat_t statcache;
1863}; 2836};
1864 2837
1865/* declare prototype */ 2838static void
1866XS(XS_Coro__State__set_stacklevel); 2839coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 2840{
2841 dXSARGS;
2842 AV *state = (AV *)S_GENSUB_ARG;
2843 SV *coro = av_pop (state);
2844 SV *data_sv = newSV (sizeof (struct io_state));
2845
2846 av_extend (state, items - 1);
2847
2848 sv_upgrade (data_sv, SVt_PV);
2849 SvCUR_set (data_sv, sizeof (struct io_state));
2850 SvPOK_only (data_sv);
2851
2852 {
2853 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2854
2855 data->errorno = errno;
2856 data->laststype = PL_laststype;
2857 data->laststatval = PL_laststatval;
2858 data->statcache = PL_statcache;
2859 }
2860
2861 /* now build the result vector out of all the parameters and the data_sv */
2862 {
2863 int i;
2864
2865 for (i = 0; i < items; ++i)
2866 av_push (state, SvREFCNT_inc_NN (ST (i)));
2867 }
2868
2869 av_push (state, data_sv);
2870
2871 api_ready (aTHX_ coro);
2872 SvREFCNT_dec (coro);
2873 SvREFCNT_dec ((AV *)state);
2874}
2875
2876static int
2877slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2878{
2879 AV *state = (AV *)frame->data;
2880
2881 /* if we are about to throw, return early */
2882 /* this does not cancel the aio request, but at least */
2883 /* it quickly returns */
2884 if (CORO_THROW)
2885 return 0;
2886
2887 /* one element that is an RV? repeat! */
2888 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2889 return 1;
2890
2891 /* restore status */
2892 {
2893 SV *data_sv = av_pop (state);
2894 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2895
2896 errno = data->errorno;
2897 PL_laststype = data->laststype;
2898 PL_laststatval = data->laststatval;
2899 PL_statcache = data->statcache;
2900
2901 SvREFCNT_dec (data_sv);
2902 }
2903
2904 /* push result values */
2905 {
1877 dSP; 2906 dSP;
1878 struct transfer_args ta; 2907 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 SV *gv = *sp;
1884 2908
1885 /* do a quick consistency check on the "function" object, and if it isn't */ 2909 EXTEND (SP, AvFILLp (state) + 1);
1886 /* for us, divert to the real entersub */ 2910 for (i = 0; i <= AvFILLp (state); ++i)
1887 if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel) 2911 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1888 return PL_ppaddr[OP_ENTERSUB](aTHX);
1889 2912
1890 /* pop args */
1891 SP = PL_stack_base + POPMARK;
1892
1893 if (!(PL_op->op_flags & OPf_STACKED))
1894 {
1895 /* ampersand-form of call, use @_ instead of stack */
1896 AV *av = GvAV (PL_defgv);
1897 arg = AvARRAY (av);
1898 items = AvFILLp (av) + 1;
1899 }
1900
1901 PUTBACK; 2913 PUTBACK;
2914 }
1902 2915
1903 if (!ix) 2916 return 0;
1904 { 2917}
1905 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2918
1906 ix = slf->prepare (aTHX_ arg, items); 2919static void
2920slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2921{
2922 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2923 SV *coro_hv = SvRV (coro_current);
2924 struct coro *coro = SvSTATE_hv (coro_hv);
2925
2926 /* put our coroutine id on the state arg */
2927 av_push (state, SvREFCNT_inc_NN (coro_hv));
2928
2929 /* first see whether we have a non-zero priority and set it as AIO prio */
2930 if (coro->prio)
1907 } 2931 {
2932 dSP;
1908 2933
1909 switch (ix) 2934 static SV *prio_cv;
2935 static SV *prio_sv;
2936
2937 if (expect_false (!prio_cv))
2938 {
2939 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2940 prio_sv = newSViv (0);
2941 }
2942
2943 PUSHMARK (SP);
2944 sv_setiv (prio_sv, coro->prio);
2945 XPUSHs (prio_sv);
2946
2947 PUTBACK;
2948 call_sv (prio_cv, G_VOID | G_DISCARD);
1910 { 2949 }
1911 case CORO_SLF_SET_STACKLEVEL:
1912 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1913 break;
1914 2950
1915 case CORO_SLF_TRANSFER: 2951 /* now call the original request */
1916 if (items != 2) 2952 {
1917 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2953 dSP;
2954 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2955 int i;
1918 2956
1919 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2957 PUSHMARK (SP);
1920 break;
1921 2958
1922 case CORO_SLF_SCHEDULE: 2959 /* first push all args to the stack */
1923 prepare_schedule (aTHX_ &ta); 2960 EXTEND (SP, items + 1);
1924 break;
1925 2961
1926 case CORO_SLF_CEDE: 2962 for (i = 0; i < items; ++i)
1927 prepare_cede (aTHX_ &ta); 2963 PUSHs (arg [i]);
1928 break;
1929 2964
1930 case CORO_SLF_CEDE_NOTSELF: 2965 /* now push the callback closure */
1931 prepare_cede_notself (aTHX_ &ta); 2966 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1932 break;
1933 2967
1934 default: 2968 /* now call the AIO function - we assume our request is uncancelable */
1935 abort ();
1936 }
1937
1938 do
1939 TRANSFER (ta, 0);
1940 while (slf && slf->check (aTHX));
1941
1942 SPAGAIN;
1943
1944 PUTBACK; 2969 PUTBACK;
1945 SLF_TAIL; 2970 call_sv ((SV *)req, G_VOID | G_DISCARD);
1946 SPAGAIN; 2971 }
1947 RETURN;
1948}
1949 2972
1950static void 2973 /* now that the request is going, we loop till we have a result */
1951coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2974 frame->data = (void *)state;
1952{ 2975 frame->prepare = prepare_schedule;
1953 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2976 frame->check = slf_check_aio_req;
1954
1955 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1956 slf_cv = cv;
1957
1958 /* we patch the op, and then re-run the whole call */
1959 /* we have to put the same argument on the stack for this to work */
1960 /* and this will be done by pp_restore */
1961 slf_restore.op_next = (OP *)&slf_restore;
1962 slf_restore.op_type = OP_NULL;
1963 slf_restore.op_ppaddr = pp_restore;
1964 slf_restore.op_first = PL_op;
1965
1966 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1967 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1968
1969 PL_op->op_ppaddr = pp_slf;
1970 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1971
1972 PL_op = (OP *)&slf_restore;
1973} 2977}
1974 2978
1975static void 2979static void
1976api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2980coro_aio_req_xs (pTHX_ CV *cv)
1977{ 2981{
1978 CvXSUBANY (cv).any_ptr = (void *)slf; 2982 dXSARGS;
1979 coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items); 2983
2984 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2985
2986 XSRETURN_EMPTY;
2987}
2988
2989/*****************************************************************************/
2990
2991#if CORO_CLONE
2992# include "clone.c"
2993#endif
2994
2995/*****************************************************************************/
2996
2997static SV *
2998coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2999{
3000 SV *coro_sv;
3001 struct coro *coro;
3002 MAGIC *mg;
3003 HV *hv;
3004 SV *cb;
3005 int i;
3006
3007 if (argc > 0)
3008 {
3009 cb = s_get_cv_croak (argv [0]);
3010
3011 if (!is_coro)
3012 {
3013 if (CvISXSUB (cb))
3014 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3015
3016 if (!CvROOT (cb))
3017 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3018 }
3019 }
3020
3021 Newz (0, coro, 1, struct coro);
3022 coro->args = newAV ();
3023 coro->flags = CF_NEW;
3024
3025 if (coro_first) coro_first->prev = coro;
3026 coro->next = coro_first;
3027 coro_first = coro;
3028
3029 coro->hv = hv = newHV ();
3030 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3031 mg->mg_flags |= MGf_DUP;
3032 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3033
3034 if (argc > 0)
3035 {
3036 av_extend (coro->args, argc + is_coro - 1);
3037
3038 if (is_coro)
3039 {
3040 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3041 cb = (SV *)cv_coro_run;
3042 }
3043
3044 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3045
3046 for (i = 1; i < argc; i++)
3047 av_push (coro->args, newSVsv (argv [i]));
3048 }
3049
3050 return coro_sv;
1980} 3051}
1981 3052
1982MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3053MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1983 3054
1984PROTOTYPES: DISABLE 3055PROTOTYPES: DISABLE
1985 3056
1986BOOT: 3057BOOT:
1987{ 3058{
1988#ifdef USE_ITHREADS 3059#ifdef USE_ITHREADS
1989 MUTEX_INIT (&coro_lock);
1990# if CORO_PTHREAD 3060# if CORO_PTHREAD
1991 coro_thx = PERL_GET_CONTEXT; 3061 coro_thx = PERL_GET_CONTEXT;
1992# endif 3062# endif
1993#endif 3063#endif
1994 BOOT_PAGESIZE; 3064 BOOT_PAGESIZE;
1995 3065
3066 cctx_current = cctx_new_empty ();
3067
1996 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3068 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1997 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3069 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1998 3070
1999 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3071 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2000 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3072 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2015 main_top_env = PL_top_env; 3087 main_top_env = PL_top_env;
2016 3088
2017 while (main_top_env->je_prev) 3089 while (main_top_env->je_prev)
2018 main_top_env = main_top_env->je_prev; 3090 main_top_env = main_top_env->je_prev;
2019 3091
3092 {
3093 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3094
3095 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3096 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3097
3098 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3099 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3100 }
3101
2020 coroapi.ver = CORO_API_VERSION; 3102 coroapi.ver = CORO_API_VERSION;
2021 coroapi.rev = CORO_API_REVISION; 3103 coroapi.rev = CORO_API_REVISION;
3104
2022 coroapi.transfer = api_transfer; 3105 coroapi.transfer = api_transfer;
3106
3107 coroapi.sv_state = SvSTATE_;
2023 coroapi.execute_slf = api_execute_slf; 3108 coroapi.execute_slf = api_execute_slf;
3109 coroapi.prepare_nop = prepare_nop;
3110 coroapi.prepare_schedule = prepare_schedule;
3111 coroapi.prepare_cede = prepare_cede;
3112 coroapi.prepare_cede_notself = prepare_cede_notself;
2024 3113
2025 { 3114 {
2026 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3115 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2027 3116
2028 if (!svp) croak ("Time::HiRes is required"); 3117 if (!svp) croak ("Time::HiRes is required");
2029 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3118 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2030 3119
2031 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3120 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3121
3122 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3123 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2032 } 3124 }
2033 3125
2034 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3126 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2035} 3127}
2036 3128
2037SV * 3129SV *
2038new (char *klass, ...) 3130new (SV *klass, ...)
3131 ALIAS:
3132 Coro::new = 1
2039 CODE: 3133 CODE:
2040{ 3134 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2041 struct coro *coro; 3135 OUTPUT:
2042 MAGIC *mg;
2043 HV *hv;
2044 int i;
2045
2046 Newz (0, coro, 1, struct coro);
2047 coro->args = newAV ();
2048 coro->flags = CF_NEW;
2049
2050 if (coro_first) coro_first->prev = coro;
2051 coro->next = coro_first;
2052 coro_first = coro;
2053
2054 coro->hv = hv = newHV ();
2055 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2056 mg->mg_flags |= MGf_DUP;
2057 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2058
2059 av_extend (coro->args, items - 1);
2060 for (i = 1; i < items; i++)
2061 av_push (coro->args, newSVsv (ST (i)));
2062}
2063 OUTPUT:
2064 RETVAL 3136 RETVAL
2065 3137
2066void 3138void
2067_set_stacklevel (...) 3139transfer (...)
2068 ALIAS: 3140 PROTOTYPE: $$
2069 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 3141 CODE:
2070 Coro::State::transfer = CORO_SLF_TRANSFER 3142 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2071 Coro::schedule = CORO_SLF_SCHEDULE
2072 Coro::cede = CORO_SLF_CEDE
2073 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2074 CODE:
2075 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2076 3143
2077bool 3144bool
2078_destroy (SV *coro_sv) 3145_destroy (SV *coro_sv)
2079 CODE: 3146 CODE:
2080 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3147 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2085_exit (int code) 3152_exit (int code)
2086 PROTOTYPE: $ 3153 PROTOTYPE: $
2087 CODE: 3154 CODE:
2088 _exit (code); 3155 _exit (code);
2089 3156
3157SV *
3158clone (Coro::State coro)
3159 CODE:
3160{
3161#if CORO_CLONE
3162 struct coro *ncoro = coro_clone (aTHX_ coro);
3163 MAGIC *mg;
3164 /* TODO: too much duplication */
3165 ncoro->hv = newHV ();
3166 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3167 mg->mg_flags |= MGf_DUP;
3168 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3169#else
3170 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3171#endif
3172}
3173 OUTPUT:
3174 RETVAL
3175
2090int 3176int
2091cctx_stacksize (int new_stacksize = 0) 3177cctx_stacksize (int new_stacksize = 0)
3178 PROTOTYPE: ;$
2092 CODE: 3179 CODE:
2093 RETVAL = cctx_stacksize; 3180 RETVAL = cctx_stacksize;
2094 if (new_stacksize) 3181 if (new_stacksize)
2095 { 3182 {
2096 cctx_stacksize = new_stacksize; 3183 cctx_stacksize = new_stacksize;
… …
2099 OUTPUT: 3186 OUTPUT:
2100 RETVAL 3187 RETVAL
2101 3188
2102int 3189int
2103cctx_max_idle (int max_idle = 0) 3190cctx_max_idle (int max_idle = 0)
3191 PROTOTYPE: ;$
2104 CODE: 3192 CODE:
2105 RETVAL = cctx_max_idle; 3193 RETVAL = cctx_max_idle;
2106 if (max_idle > 1) 3194 if (max_idle > 1)
2107 cctx_max_idle = max_idle; 3195 cctx_max_idle = max_idle;
2108 OUTPUT: 3196 OUTPUT:
2109 RETVAL 3197 RETVAL
2110 3198
2111int 3199int
2112cctx_count () 3200cctx_count ()
3201 PROTOTYPE:
2113 CODE: 3202 CODE:
2114 RETVAL = cctx_count; 3203 RETVAL = cctx_count;
2115 OUTPUT: 3204 OUTPUT:
2116 RETVAL 3205 RETVAL
2117 3206
2118int 3207int
2119cctx_idle () 3208cctx_idle ()
3209 PROTOTYPE:
2120 CODE: 3210 CODE:
2121 RETVAL = cctx_idle; 3211 RETVAL = cctx_idle;
2122 OUTPUT: 3212 OUTPUT:
2123 RETVAL 3213 RETVAL
2124 3214
2125void 3215void
2126list () 3216list ()
3217 PROTOTYPE:
2127 PPCODE: 3218 PPCODE:
2128{ 3219{
2129 struct coro *coro; 3220 struct coro *coro;
2130 for (coro = coro_first; coro; coro = coro->next) 3221 for (coro = coro_first; coro; coro = coro->next)
2131 if (coro->hv) 3222 if (coro->hv)
… …
2138 eval = 1 3229 eval = 1
2139 CODE: 3230 CODE:
2140{ 3231{
2141 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3232 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2142 { 3233 {
2143 struct coro temp; 3234 struct coro *current = SvSTATE_current;
2144 3235
2145 if (!(coro->flags & CF_RUNNING)) 3236 if (current != coro)
2146 { 3237 {
2147 PUTBACK; 3238 PUTBACK;
2148 save_perl (aTHX_ &temp); 3239 save_perl (aTHX_ current);
2149 load_perl (aTHX_ coro); 3240 load_perl (aTHX_ coro);
3241 SPAGAIN;
2150 } 3242 }
2151 3243
2152 {
2153 dSP;
2154 ENTER;
2155 SAVETMPS;
2156 PUTBACK;
2157 PUSHSTACK; 3244 PUSHSTACK;
3245
2158 PUSHMARK (SP); 3246 PUSHMARK (SP);
3247 PUTBACK;
2159 3248
2160 if (ix) 3249 if (ix)
2161 eval_sv (coderef, 0); 3250 eval_sv (coderef, 0);
2162 else 3251 else
2163 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3252 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2164 3253
2165 POPSTACK; 3254 POPSTACK;
2166 SPAGAIN; 3255 SPAGAIN;
2167 FREETMPS;
2168 LEAVE;
2169 PUTBACK;
2170 }
2171 3256
2172 if (!(coro->flags & CF_RUNNING)) 3257 if (current != coro)
2173 { 3258 {
3259 PUTBACK;
2174 save_perl (aTHX_ coro); 3260 save_perl (aTHX_ coro);
2175 load_perl (aTHX_ &temp); 3261 load_perl (aTHX_ current);
2176 SPAGAIN; 3262 SPAGAIN;
2177 } 3263 }
2178 } 3264 }
2179} 3265}
2180 3266
… …
2184 ALIAS: 3270 ALIAS:
2185 is_ready = CF_READY 3271 is_ready = CF_READY
2186 is_running = CF_RUNNING 3272 is_running = CF_RUNNING
2187 is_new = CF_NEW 3273 is_new = CF_NEW
2188 is_destroyed = CF_DESTROYED 3274 is_destroyed = CF_DESTROYED
3275 is_suspended = CF_SUSPENDED
2189 CODE: 3276 CODE:
2190 RETVAL = boolSV (coro->flags & ix); 3277 RETVAL = boolSV (coro->flags & ix);
2191 OUTPUT: 3278 OUTPUT:
2192 RETVAL 3279 RETVAL
2193 3280
2194void 3281void
2195throw (Coro::State self, SV *throw = &PL_sv_undef) 3282throw (Coro::State self, SV *exception = &PL_sv_undef)
2196 PROTOTYPE: $;$ 3283 PROTOTYPE: $;$
2197 CODE: 3284 CODE:
3285{
3286 struct coro *current = SvSTATE_current;
3287 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2198 SvREFCNT_dec (self->throw); 3288 SvREFCNT_dec (*exceptionp);
2199 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3289 SvGETMAGIC (exception);
3290 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3291}
2200 3292
2201void 3293void
2202api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3294api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3295 PROTOTYPE: $;$
2203 C_ARGS: aTHX_ coro, flags 3296 C_ARGS: aTHX_ coro, flags
2204 3297
2205SV * 3298SV *
2206has_cctx (Coro::State coro) 3299has_cctx (Coro::State coro)
2207 PROTOTYPE: $ 3300 PROTOTYPE: $
2208 CODE: 3301 CODE:
2209 RETVAL = boolSV (!!coro->cctx); 3302 /* maybe manage the running flag differently */
3303 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2210 OUTPUT: 3304 OUTPUT:
2211 RETVAL 3305 RETVAL
2212 3306
2213int 3307int
2214is_traced (Coro::State coro) 3308is_traced (Coro::State coro)
… …
2232 OUTPUT: 3326 OUTPUT:
2233 RETVAL 3327 RETVAL
2234 3328
2235void 3329void
2236force_cctx () 3330force_cctx ()
3331 PROTOTYPE:
2237 CODE: 3332 CODE:
2238 struct coro *coro = SvSTATE (coro_current);
2239 coro->cctx->idle_sp = 0; 3333 cctx_current->idle_sp = 0;
2240 3334
2241void 3335void
2242swap_defsv (Coro::State self) 3336swap_defsv (Coro::State self)
2243 PROTOTYPE: $ 3337 PROTOTYPE: $
2244 ALIAS: 3338 ALIAS:
2245 swap_defav = 1 3339 swap_defav = 1
2246 CODE: 3340 CODE:
2247 if (!self->slot) 3341 if (!self->slot)
2248 croak ("cannot swap state with coroutine that has no saved state"); 3342 croak ("cannot swap state with coroutine that has no saved state,");
2249 else 3343 else
2250 { 3344 {
2251 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3345 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2252 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3346 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2253 3347
2254 SV *tmp = *src; *src = *dst; *dst = tmp; 3348 SV *tmp = *src; *src = *dst; *dst = tmp;
2255 } 3349 }
2256 3350
3351void
3352cancel (Coro::State self)
3353 CODE:
3354 coro_state_destroy (aTHX_ self);
3355 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3356
3357
3358SV *
3359enable_times (int enabled = enable_times)
3360 CODE:
3361{
3362 RETVAL = boolSV (enable_times);
3363
3364 if (enabled != enable_times)
3365 {
3366 enable_times = enabled;
3367
3368 coro_times_update ();
3369 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3370 }
3371}
3372 OUTPUT:
3373 RETVAL
3374
3375void
3376times (Coro::State self)
3377 PPCODE:
3378{
3379 struct coro *current = SvSTATE (coro_current);
3380
3381 if (expect_false (current == self))
3382 {
3383 coro_times_update ();
3384 coro_times_add (SvSTATE (coro_current));
3385 }
3386
3387 EXTEND (SP, 2);
3388 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3389 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3390
3391 if (expect_false (current == self))
3392 coro_times_sub (SvSTATE (coro_current));
3393}
3394
3395void
3396swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3397 CODE:
3398{
3399 struct coro *current = SvSTATE_current;
3400
3401 if (current == coro)
3402 SWAP_SVS (current);
3403
3404 if (!coro->swap_sv)
3405 coro->swap_sv = newAV ();
3406
3407 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3408 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3409
3410 if (current == coro)
3411 SWAP_SVS (current);
3412}
3413
3414
2257MODULE = Coro::State PACKAGE = Coro 3415MODULE = Coro::State PACKAGE = Coro
2258 3416
2259BOOT: 3417BOOT:
2260{ 3418{
2261 int i;
2262
2263 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2264 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3419 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2265 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3420 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2266 3421 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3422 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2267 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3423 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2268 SvREADONLY_on (coro_current); 3424 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3425 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3426 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3427 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2269 3428
3429 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3430 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3431 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3432 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3433
2270 coro_stash = gv_stashpv ("Coro", TRUE); 3434 coro_stash = gv_stashpv ("Coro", TRUE);
2271 3435
2272 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3436 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2273 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3437 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2274 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3438 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2275 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3439 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2276 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3440 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2277 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3441 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2278
2279 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2280 coro_ready[i] = newAV ();
2281 3442
2282 { 3443 {
2283 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3444 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2284 3445
2285 coroapi.schedule = api_schedule; 3446 coroapi.schedule = api_schedule;
3447 coroapi.schedule_to = api_schedule_to;
2286 coroapi.cede = api_cede; 3448 coroapi.cede = api_cede;
2287 coroapi.cede_notself = api_cede_notself; 3449 coroapi.cede_notself = api_cede_notself;
2288 coroapi.ready = api_ready; 3450 coroapi.ready = api_ready;
2289 coroapi.is_ready = api_is_ready; 3451 coroapi.is_ready = api_is_ready;
2290 coroapi.nready = coro_nready; 3452 coroapi.nready = coro_nready;
2291 coroapi.current = coro_current; 3453 coroapi.current = coro_current;
2292 3454
2293 GCoroAPI = &coroapi; 3455 /*GCoroAPI = &coroapi;*/
2294 sv_setiv (sv, (IV)&coroapi); 3456 sv_setiv (sv, (IV)&coroapi);
2295 SvREADONLY_on (sv); 3457 SvREADONLY_on (sv);
2296 } 3458 }
2297} 3459}
3460
3461SV *
3462async (...)
3463 PROTOTYPE: &@
3464 CODE:
3465 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3466 api_ready (aTHX_ RETVAL);
3467 OUTPUT:
3468 RETVAL
3469
3470void
3471terminate (...)
3472 CODE:
3473 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3474
3475void
3476schedule (...)
3477 CODE:
3478 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3479
3480void
3481schedule_to (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3484
3485void
3486cede_to (...)
3487 CODE:
3488 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3489
3490void
3491cede (...)
3492 CODE:
3493 CORO_EXECUTE_SLF_XS (slf_init_cede);
3494
3495void
3496cede_notself (...)
3497 CODE:
3498 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2298 3499
2299void 3500void
2300_set_current (SV *current) 3501_set_current (SV *current)
2301 PROTOTYPE: $ 3502 PROTOTYPE: $
2302 CODE: 3503 CODE:
… …
2305 3506
2306void 3507void
2307_set_readyhook (SV *hook) 3508_set_readyhook (SV *hook)
2308 PROTOTYPE: $ 3509 PROTOTYPE: $
2309 CODE: 3510 CODE:
2310 LOCK;
2311 SvREFCNT_dec (coro_readyhook); 3511 SvREFCNT_dec (coro_readyhook);
3512 SvGETMAGIC (hook);
3513 if (SvOK (hook))
3514 {
2312 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3515 coro_readyhook = newSVsv (hook);
2313 UNLOCK; 3516 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3517 }
3518 else
3519 {
3520 coro_readyhook = 0;
3521 CORO_READYHOOK = 0;
3522 }
2314 3523
2315int 3524int
2316prio (Coro::State coro, int newprio = 0) 3525prio (Coro::State coro, int newprio = 0)
3526 PROTOTYPE: $;$
2317 ALIAS: 3527 ALIAS:
2318 nice = 1 3528 nice = 1
2319 CODE: 3529 CODE:
2320{ 3530{
2321 RETVAL = coro->prio; 3531 RETVAL = coro->prio;
… …
2323 if (items > 1) 3533 if (items > 1)
2324 { 3534 {
2325 if (ix) 3535 if (ix)
2326 newprio = coro->prio - newprio; 3536 newprio = coro->prio - newprio;
2327 3537
2328 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3538 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2329 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3539 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2330 3540
2331 coro->prio = newprio; 3541 coro->prio = newprio;
2332 } 3542 }
2333} 3543}
2334 OUTPUT: 3544 OUTPUT:
… …
2348 CODE: 3558 CODE:
2349 RETVAL = coro_nready; 3559 RETVAL = coro_nready;
2350 OUTPUT: 3560 OUTPUT:
2351 RETVAL 3561 RETVAL
2352 3562
2353# for async_pool speedup
2354void 3563void
2355_pool_1 (SV *cb) 3564suspend (Coro::State self)
3565 PROTOTYPE: $
2356 CODE: 3566 CODE:
2357{ 3567 self->flags |= CF_SUSPENDED;
2358 struct coro *coro = SvSTATE (coro_current);
2359 HV *hv = (HV *)SvRV (coro_current);
2360 AV *defav = GvAV (PL_defgv);
2361 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2362 AV *invoke_av;
2363 int i, len;
2364 3568
2365 if (!invoke) 3569void
3570resume (Coro::State self)
3571 PROTOTYPE: $
3572 CODE:
3573 self->flags &= ~CF_SUSPENDED;
3574
3575void
3576_pool_handler (...)
3577 CODE:
3578 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3579
3580void
3581async_pool (SV *cv, ...)
3582 PROTOTYPE: &@
3583 PPCODE:
3584{
3585 HV *hv = (HV *)av_pop (av_async_pool);
3586 AV *av = newAV ();
3587 SV *cb = ST (0);
3588 int i;
3589
3590 av_extend (av, items - 2);
3591 for (i = 1; i < items; ++i)
3592 av_push (av, SvREFCNT_inc_NN (ST (i)));
3593
3594 if ((SV *)hv == &PL_sv_undef)
2366 { 3595 {
2367 SV *old = PL_diehook; 3596 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2368 PL_diehook = 0; 3597 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2369 SvREFCNT_dec (old); 3598 SvREFCNT_dec (sv);
2370 croak ("\3async_pool terminate\2\n");
2371 } 3599 }
2372 3600
2373 SvREFCNT_dec (coro->saved_deffh);
2374 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2375
2376 hv_store (hv, "desc", sizeof ("desc") - 1,
2377 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379 invoke_av = (AV *)SvRV (invoke);
2380 len = av_len (invoke_av);
2381
2382 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2383
2384 if (len > 0)
2385 { 3601 {
2386 av_fill (defav, len - 1); 3602 struct coro *coro = SvSTATE_hv (hv);
2387 for (i = 0; i < len; ++i) 3603
2388 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3604 assert (!coro->invoke_cb);
3605 assert (!coro->invoke_av);
3606 coro->invoke_cb = SvREFCNT_inc (cb);
3607 coro->invoke_av = av;
2389 } 3608 }
2390 3609
3610 api_ready (aTHX_ (SV *)hv);
3611
3612 if (GIMME_V != G_VOID)
3613 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3614 else
2391 SvREFCNT_dec (invoke); 3615 SvREFCNT_dec (hv);
2392} 3616}
2393 3617
2394void 3618SV *
2395_pool_2 (SV *cb) 3619rouse_cb ()
3620 PROTOTYPE:
2396 CODE: 3621 CODE:
2397{ 3622 RETVAL = coro_new_rouse_cb (aTHX);
2398 struct coro *coro = SvSTATE (coro_current);
2399
2400 sv_setsv (cb, &PL_sv_undef);
2401
2402 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2403 coro->saved_deffh = 0;
2404
2405 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2406 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2407 {
2408 SV *old = PL_diehook;
2409 PL_diehook = 0;
2410 SvREFCNT_dec (old);
2411 croak ("\3async_pool terminate\2\n");
2412 }
2413
2414 av_clear (GvAV (PL_defgv));
2415 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2416 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2417
2418 coro->prio = 0;
2419
2420 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421 api_trace (aTHX_ coro_current, 0);
2422
2423 av_push (av_async_pool, newSVsv (coro_current));
2424}
2425
2426#if 0
2427
2428void
2429_generator_call (...)
2430 PROTOTYPE: @
2431 PPCODE:
2432 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2433 xxxx
2434 abort ();
2435
2436SV *
2437gensub (SV *sub, ...)
2438 PROTOTYPE: &;@
2439 CODE:
2440{
2441 struct coro *coro;
2442 MAGIC *mg;
2443 CV *xcv;
2444 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2445 int i;
2446
2447 CvGV (ncv) = CvGV (cv);
2448 CvFILE (ncv) = CvFILE (cv);
2449
2450 Newz (0, coro, 1, struct coro);
2451 coro->args = newAV ();
2452 coro->flags = CF_NEW;
2453
2454 av_extend (coro->args, items - 1);
2455 for (i = 1; i < items; i++)
2456 av_push (coro->args, newSVsv (ST (i)));
2457
2458 CvISXSUB_on (ncv);
2459 CvXSUBANY (ncv).any_ptr = (void *)coro;
2460
2461 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2462
2463 CvXSUB (ncv) = CvXSUB (xcv);
2464 CvANON_on (ncv);
2465
2466 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2467 RETVAL = newRV_noinc ((SV *)ncv);
2468}
2469 OUTPUT: 3623 OUTPUT:
2470 RETVAL 3624 RETVAL
2471 3625
2472#endif
2473
2474
2475MODULE = Coro::State PACKAGE = Coro::AIO
2476
2477void 3626void
2478_get_state (SV *self) 3627rouse_wait (...)
3628 PROTOTYPE: ;$
2479 PPCODE: 3629 PPCODE:
2480{ 3630 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2481 AV *defav = GvAV (PL_defgv);
2482 AV *av = newAV ();
2483 int i;
2484 SV *data_sv = newSV (sizeof (struct io_state));
2485 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2486 SvCUR_set (data_sv, sizeof (struct io_state));
2487 SvPOK_only (data_sv);
2488
2489 data->errorno = errno;
2490 data->laststype = PL_laststype;
2491 data->laststatval = PL_laststatval;
2492 data->statcache = PL_statcache;
2493
2494 av_extend (av, AvFILLp (defav) + 1 + 1);
2495
2496 for (i = 0; i <= AvFILLp (defav); ++i)
2497 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2498
2499 av_push (av, data_sv);
2500
2501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2502
2503 api_ready (aTHX_ self);
2504}
2505 3631
2506void 3632void
2507_set_state (SV *state) 3633on_enter (SV *block)
3634 ALIAS:
3635 on_leave = 1
2508 PROTOTYPE: $ 3636 PROTOTYPE: &
3637 CODE:
3638{
3639 struct coro *coro = SvSTATE_current;
3640 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3641
3642 block = s_get_cv_croak (block);
3643
3644 if (!*avp)
3645 *avp = newAV ();
3646
3647 av_push (*avp, SvREFCNT_inc (block));
3648
3649 if (!ix)
3650 on_enterleave_call (aTHX_ block);
3651
3652 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3653 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3654 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3655}
3656
3657
3658MODULE = Coro::State PACKAGE = PerlIO::cede
3659
3660BOOT:
3661 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3662
3663
3664MODULE = Coro::State PACKAGE = Coro::Semaphore
3665
3666SV *
3667new (SV *klass, SV *count = 0)
3668 CODE:
3669{
3670 int semcnt = 1;
3671
3672 if (count)
3673 {
3674 SvGETMAGIC (count);
3675
3676 if (SvOK (count))
3677 semcnt = SvIV (count);
3678 }
3679
3680 RETVAL = sv_bless (
3681 coro_waitarray_new (aTHX_ semcnt),
3682 GvSTASH (CvGV (cv))
3683 );
3684}
3685 OUTPUT:
3686 RETVAL
3687
3688# helper for Coro::Channel and others
3689SV *
3690_alloc (int count)
3691 CODE:
3692 RETVAL = coro_waitarray_new (aTHX_ count);
3693 OUTPUT:
3694 RETVAL
3695
3696SV *
3697count (SV *self)
3698 CODE:
3699 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3700 OUTPUT:
3701 RETVAL
3702
3703void
3704up (SV *self, int adjust = 1)
3705 ALIAS:
3706 adjust = 1
3707 CODE:
3708 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3709
3710void
3711down (...)
3712 CODE:
3713 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3714
3715void
3716wait (...)
3717 CODE:
3718 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3719
3720void
3721try (SV *self)
3722 PPCODE:
3723{
3724 AV *av = (AV *)SvRV (self);
3725 SV *count_sv = AvARRAY (av)[0];
3726 IV count = SvIVX (count_sv);
3727
3728 if (count > 0)
3729 {
3730 --count;
3731 SvIVX (count_sv) = count;
3732 XSRETURN_YES;
3733 }
3734 else
3735 XSRETURN_NO;
3736}
3737
3738void
3739waiters (SV *self)
3740 PPCODE:
3741{
3742 AV *av = (AV *)SvRV (self);
3743 int wcount = AvFILLp (av) + 1 - 1;
3744
3745 if (GIMME_V == G_SCALAR)
3746 XPUSHs (sv_2mortal (newSViv (wcount)));
3747 else
3748 {
3749 int i;
3750 EXTEND (SP, wcount);
3751 for (i = 1; i <= wcount; ++i)
3752 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3753 }
3754}
3755
3756MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3757
3758void
3759_may_delete (SV *sem, int count, int extra_refs)
2509 PPCODE: 3760 PPCODE:
2510{ 3761{
2511 AV *av = (AV *)SvRV (state); 3762 AV *av = (AV *)SvRV (sem);
2512 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2513 int i;
2514 3763
2515 errno = data->errorno; 3764 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2516 PL_laststype = data->laststype; 3765 && AvFILLp (av) == 0 /* no waiters, just count */
2517 PL_laststatval = data->laststatval; 3766 && SvIV (AvARRAY (av)[0]) == count)
2518 PL_statcache = data->statcache; 3767 XSRETURN_YES;
2519 3768
3769 XSRETURN_NO;
3770}
3771
3772MODULE = Coro::State PACKAGE = Coro::Signal
3773
3774SV *
3775new (SV *klass)
3776 CODE:
3777 RETVAL = sv_bless (
3778 coro_waitarray_new (aTHX_ 0),
3779 GvSTASH (CvGV (cv))
3780 );
3781 OUTPUT:
3782 RETVAL
3783
3784void
3785wait (...)
3786 CODE:
3787 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3788
3789void
3790broadcast (SV *self)
3791 CODE:
3792{
3793 AV *av = (AV *)SvRV (self);
3794 coro_signal_wake (aTHX_ av, AvFILLp (av));
3795}
3796
3797void
3798send (SV *self)
3799 CODE:
3800{
3801 AV *av = (AV *)SvRV (self);
3802
2520 EXTEND (SP, AvFILLp (av)); 3803 if (AvFILLp (av))
2521 for (i = 0; i < AvFILLp (av); ++i) 3804 coro_signal_wake (aTHX_ av, 1);
2522 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3805 else
3806 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2523} 3807}
3808
3809IV
3810awaited (SV *self)
3811 CODE:
3812 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3813 OUTPUT:
3814 RETVAL
2524 3815
2525 3816
2526MODULE = Coro::State PACKAGE = Coro::AnyEvent 3817MODULE = Coro::State PACKAGE = Coro::AnyEvent
2527 3818
2528BOOT: 3819BOOT:
2529 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3820 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2530 3821
2531SV * 3822void
2532_schedule (...) 3823_schedule (...)
2533 PROTOTYPE: @
2534 CODE: 3824 CODE:
2535{ 3825{
2536 static int incede; 3826 static int incede;
2537 3827
2538 api_cede_notself (aTHX); 3828 api_cede_notself (aTHX);
… …
2544 sv_setsv (sv_activity, &PL_sv_undef); 3834 sv_setsv (sv_activity, &PL_sv_undef);
2545 if (coro_nready >= incede) 3835 if (coro_nready >= incede)
2546 { 3836 {
2547 PUSHMARK (SP); 3837 PUSHMARK (SP);
2548 PUTBACK; 3838 PUTBACK;
2549 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3839 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2550 SPAGAIN;
2551 } 3840 }
2552 3841
2553 --incede; 3842 --incede;
2554} 3843}
2555 3844
2556 3845
2557MODULE = Coro::State PACKAGE = PerlIO::cede 3846MODULE = Coro::State PACKAGE = Coro::AIO
2558 3847
2559BOOT: 3848void
2560 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3849_register (char *target, char *proto, SV *req)
3850 CODE:
3851{
3852 SV *req_cv = s_get_cv_croak (req);
3853 /* newXSproto doesn't return the CV on 5.8 */
3854 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3855 sv_setpv ((SV *)slf_cv, proto);
3856 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3857}
2561 3858
3859MODULE = Coro::State PACKAGE = Coro::Select
3860
3861void
3862patch_pp_sselect ()
3863 CODE:
3864 if (!coro_old_pp_sselect)
3865 {
3866 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3867 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3868 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3869 }
3870
3871void
3872unpatch_pp_sselect ()
3873 CODE:
3874 if (coro_old_pp_sselect)
3875 {
3876 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3877 coro_old_pp_sselect = 0;
3878 }
3879

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