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Comparing Coro/Coro/State.xs (file contents):
Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC vs.
Revision 1.384 by root, Thu Feb 17 01:32:18 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; 138
139static AV *av_destroy; /* destruction queue */
140static SV *sv_manager; /* the manager coro */
141static SV *sv_idle; /* $Coro::idle */
187 142
188static GV *irsgv; /* $/ */ 143static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 144static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 145static SV *rv_diehook;
191static SV *rv_warnhook; 146static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 147static HV *hv_sig; /* %SIG */
193 148
194/* async_pool helper stuff */ 149/* async_pool helper stuff */
195static SV *sv_pool_rss; 150static SV *sv_pool_rss;
196static SV *sv_pool_size; 151static SV *sv_pool_size;
152static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 153static AV *av_async_pool; /* idle pool */
154static SV *sv_Coro; /* class string */
155static CV *cv_pool_handler;
198 156
199/* Coro::AnyEvent */ 157/* Coro::AnyEvent */
200static 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;
201 165
202static struct coro_cctx *cctx_first; 166static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle;
204 168
205enum { 169enum {
… …
231 int valgrind_id; 195 int valgrind_id;
232#endif 196#endif
233 unsigned char flags; 197 unsigned char flags;
234} coro_cctx; 198} coro_cctx;
235 199
200coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
236enum { 204enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
240 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 */
241}; 210};
242 211
243/* 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 */
244typedef struct 213typedef struct
245{ 214{
246 SV *defsv; 215 SV *defsv;
247 AV *defav; 216 AV *defav;
248 SV *errsv; 217 SV *errsv;
249 SV *irsgv; 218 SV *irsgv;
219 HV *hinthv;
250#define VAR(name,type) type name; 220#define VAR(name,type) type name;
251# include "state.h" 221# include "state.h"
252#undef VAR 222#undef VAR
253} perl_slots; 223} perl_slots;
254 224
… …
257/* this is a structure representing a perl-level coroutine */ 227/* this is a structure representing a perl-level coroutine */
258struct coro { 228struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 230 coro_cctx *cctx;
261 231
262 /* process data */ 232 /* ready queue */
233 struct coro *next_ready;
234
235 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 237 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
266 239
240 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
270 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 */
271 246
272 /* statistics */ 247 /* statistics */
273 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
274 249
275 /* coro process data */ 250 /* coro process data */
276 int prio; 251 int prio;
277 SV *throw; /* exception to be thrown */ 252 SV *except; /* exception to be thrown */
253 SV *rouse_cb;
278 254
279 /* async_pool */ 255 /* async_pool */
280 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;
281 269
282 /* linked list */ 270 /* linked list */
283 struct coro *next, *prev; 271 struct coro *next, *prev;
284}; 272};
285 273
286typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
288 276
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 */
289static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
290 281
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 * is 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
… …
515 } 650 }
516 651
517 PUTBACK; 652 PUTBACK;
518 } 653 }
519 654
520 slf_frame = c->slf_frame; 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);
521} 675}
522 676
523static void 677static void
524save_perl (pTHX_ Coro__State c) 678save_perl (pTHX_ Coro__State c)
525{ 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;
526 c->slf_frame = slf_frame; 699 c->slf_frame = slf_frame;
527 700
528 { 701 {
529 dSP; 702 dSP;
530 I32 cxix = cxstack_ix; 703 I32 cxix = cxstack_ix;
… …
542 { 715 {
543 while (expect_true (cxix >= 0)) 716 while (expect_true (cxix >= 0))
544 { 717 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 718 PERL_CONTEXT *cx = &ccstk[cxix--];
546 719
547 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))
548 { 721 {
549 CV *cv = cx->blk_sub.cv; 722 CV *cv = cx->blk_sub.cv;
550 723
551 if (expect_true (CvDEPTH (cv))) 724 if (expect_true (CvDEPTH (cv)))
552 { 725 {
… …
576 /* we manually unroll here, as usually 2 slots is enough */ 749 /* we manually unroll here, as usually 2 slots is enough */
577 if (SLOT_COUNT >= 1) CXINC; 750 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC; 751 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC; 752 if (SLOT_COUNT >= 3) CXINC;
580 { 753 {
581 int i; 754 unsigned int i;
582 for (i = 3; i < SLOT_COUNT; ++i) 755 for (i = 3; i < SLOT_COUNT; ++i)
583 CXINC; 756 CXINC;
584 } 757 }
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 758 cxstack_ix -= SLOT_COUNT; /* undo allocation */
586 759
587 c->mainstack = PL_mainstack; 760 c->mainstack = PL_mainstack;
588 761
589 { 762 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 763 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 764
592 slot->defav = GvAV (PL_defgv); 765 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 766 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 767 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 768 slot->irsgv = GvSV (irsgv);
769 slot->hinthv = GvHV (PL_hintgv);
596 770
597 #define VAR(name,type) slot->name = PL_ ## name; 771 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 772 # include "state.h"
599 #undef VAR 773 #undef VAR
600 } 774 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 779 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 780 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 781 * not usually need a lot of stackspace.
608 */ 782 */
609#if CORO_PREFER_PERL_FUNCTIONS 783#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 784# define coro_init_stacks(thx) init_stacks ()
611#else 785#else
612static void 786static void
613coro_init_stacks (pTHX) 787coro_init_stacks (pTHX)
614{ 788{
615 PL_curstackinfo = new_stackinfo(32, 8); 789 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 852#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 853 Safefree (PL_retstack);
680#endif 854#endif
681} 855}
682 856
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
683static size_t 866static size_t
684coro_rss (pTHX_ struct coro *coro) 867coro_rss (pTHX_ struct coro *coro)
685{ 868{
686 size_t rss = sizeof (*coro); 869 size_t rss = sizeof (*coro);
687 870
688 if (coro->mainstack) 871 if (coro->mainstack)
689 { 872 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 873 if (coro->flags & CF_RUNNING)
694 { 874 {
695 slot = &tmp_slot; 875 #define SYM(sym) PL_ ## sym
696 876 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 877 #undef SYM
700 } 878 }
701 else 879 else
702 slot = coro->slot;
703
704 if (slot)
705 { 880 {
706 rss += sizeof (slot->curstackinfo); 881 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 882 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 883 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 884 }
718 } 885 }
719 886
720 return rss; 887 return rss;
721} 888}
… …
734#endif 901#endif
735 902
736/* 903/*
737 * This overrides the default magic get method of %SIG elements. 904 * This overrides the default magic get method of %SIG elements.
738 * 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
739 * 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
740 * readback here. 907 * readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 908 */
745static int 909static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 910coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 911{
748 const char *s = MgPV_nolen_const (mg); 912 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 965 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 966
803 if (svp) 967 if (svp)
804 { 968 {
805 SV *old = *svp; 969 SV *old = *svp;
806 *svp = newSVsv (sv); 970 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 971 SvREFCNT_dec (old);
808 return 0; 972 return 0;
809 } 973 }
810 } 974 }
811 975
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 987slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 988{
825 return 0; 989 return 0;
826} 990}
827 991
828static void 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 */
829coro_setup (pTHX_ struct coro *coro) 1001init_perl (pTHX_ struct coro *coro)
830{ 1002{
831 /* 1003 /*
832 * emulate part of the perl startup here. 1004 * emulate part of the perl startup here.
833 */ 1005 */
834 coro_init_stacks (aTHX); 1006 coro_init_stacks (aTHX);
835 1007
836 PL_runops = RUNOPS_DEFAULT; 1008 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1009 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1010 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1011 PL_comppad = 0;
1012 PL_comppad_name = 0;
1013 PL_comppad_name_fill = 0;
1014 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1015 PL_curpm = 0;
841 PL_curpad = 0; 1016 PL_curpad = 0;
842 PL_localizing = 0; 1017 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1018 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1019#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1020 PL_parser = 0;
847#endif 1021#endif
1022 PL_hints = 0;
848 1023
849 /* recreate the die/warn hooks */ 1024 /* recreate the die/warn hooks */
850 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 );
851 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);
852 1027
853 GvSV (PL_defgv) = newSV (0); 1028 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1029 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1030 GvSV (PL_errgv) = newSV (0);
856 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;
857 PL_rs = newSVsv (GvSV (irsgv)); 1033 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1034 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1035
860 { 1036 {
861 dSP; 1037 dSP;
862 UNOP myop; 1038 UNOP myop;
863 1039
864 Zero (&myop, 1, UNOP); 1040 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1041 myop.op_next = Nullop;
1042 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1043 myop.op_flags = OPf_WANT_VOID;
867 1044
868 PUSHMARK (SP); 1045 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1046 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1047 PUTBACK;
871 PL_op = (OP *)&myop; 1048 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1049 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1050 }
875 1051
876 /* 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
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1053 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1054 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1055 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1056 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 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
883static void 1078static void
884coro_destruct (pTHX_ struct coro *coro) 1079coro_unwind_stacks (pTHX)
885{ 1080{
886 if (!IN_DESTRUCT) 1081 if (!IN_DESTRUCT)
887 { 1082 {
888 /* restore all saved variables and stuff */ 1083 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1084 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1092 POPSTACK_TO (PL_mainstack);
898 1093
899 /* unwind main stack */ 1094 /* unwind main stack */
900 dounwind (-1); 1095 dounwind (-1);
901 } 1096 }
1097}
902 1098
903 SvREFCNT_dec (GvSV (PL_defgv)); 1099static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1100destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1101{
906 SvREFCNT_dec (PL_defoutgv); 1102 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1103
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 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
913 SvREFCNT_dec (coro->saved_deffh); 1139 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1140 SvREFCNT_dec (coro->rouse_cb);
915 1141 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1142 SvREFCNT_dec (coro->invoke_av);
1143 }
917} 1144}
918 1145
919INLINE void 1146INLINE void
920free_coro_mortal (pTHX) 1147free_coro_mortal (pTHX)
921{ 1148{
… …
929static int 1156static int
930runops_trace (pTHX) 1157runops_trace (pTHX)
931{ 1158{
932 COP *oldcop = 0; 1159 COP *oldcop = 0;
933 int oldcxix = -2; 1160 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1161
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1162 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1163 {
939 PERL_ASYNC_CHECK (); 1164 PERL_ASYNC_CHECK ();
940 1165
941 if (cctx->flags & CC_TRACE_ALL) 1166 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1167 {
943 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)
944 { 1169 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1170 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1171 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1172 AV *av = newAV (); /* return values */
948 SV **cb; 1173 SV **cb;
… …
985 1210
986 if (PL_curcop != &PL_compiling) 1211 if (PL_curcop != &PL_compiling)
987 { 1212 {
988 SV **cb; 1213 SV **cb;
989 1214
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1215 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1216 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1217 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1218
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1219 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1220 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1221 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1222 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1223 SV *fullname = sv_2mortal (newSV (0));
1000 1224
1001 if (isGV (gv)) 1225 if (isGV (gv))
… …
1006 SAVETMPS; 1230 SAVETMPS;
1007 EXTEND (SP, 3); 1231 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1232 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1233 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1234 PUSHs (fullname);
1011 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);
1012 PUTBACK; 1236 PUTBACK;
1013 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);
1014 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);
1015 SPAGAIN; 1239 SPAGAIN;
1016 FREETMPS; 1240 FREETMPS;
… …
1019 } 1243 }
1020 1244
1021 oldcxix = cxstack_ix; 1245 oldcxix = cxstack_ix;
1022 } 1246 }
1023 1247
1024 if (cctx->flags & CC_TRACE_LINE) 1248 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1249 {
1026 dSP; 1250 dSP;
1027 1251
1028 PL_runops = RUNOPS_DEFAULT; 1252 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1253 ENTER;
… …
1048 1272
1049 TAINT_NOT; 1273 TAINT_NOT;
1050 return 0; 1274 return 0;
1051} 1275}
1052 1276
1277static struct CoroSLF cctx_ssl_frame;
1278
1053static void 1279static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1280slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1281{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1282 ta->prev = 0;
1058} 1283}
1059 1284
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1285static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1286slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1287{
1063/* 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 */
1064static void NOINLINE 1294static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1295cctx_prepare (pTHX)
1066{ 1296{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1297 PL_top_env = &PL_start_env;
1071 1298
1072 if (cctx->flags & CC_TRACE) 1299 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1300 PL_runops = runops_trace;
1074 1301
1075 Zero (&myop, 1, UNOP); 1302 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1303 * that can lead to creation of a new cctx */
1077 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));
1078 1306
1079 PUSHMARK (SP); 1307 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1308 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1309
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1310 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1311 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1312}
1088 1313
1089/* 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 */
1090INLINE void 1315INLINE void
1091transfer_tail (pTHX) 1316transfer_tail (pTHX)
1092{ 1317{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1318 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1319}
1109 1320
1110/* 1321/*
1111 * this is a _very_ stripped down perl interpreter ;) 1322 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1323 */
… …
1124 /* normally we would need to skip the entersub here */ 1335 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1336 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1337 /* PL_nop = PL_nop->op_next */
1127 1338
1128 /* inject a fake subroutine call to cctx_init */ 1339 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1340 cctx_prepare (aTHX);
1130 1341
1131 /* cctx_run is the alternative tail of transfer() */ 1342 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1343 transfer_tail (aTHX);
1134 1344
1135 /* 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 */
1136 PL_restartop = PL_op; 1346 PL_restartop = PL_op;
1137 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 */
1138 1353
1139 /* 1354 /*
1140 * 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
1141 * 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)
1142 * 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
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1358 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * 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.
1145 */ 1362 */
1146 PL_top_env = main_top_env; 1363 PL_top_env = main_top_env;
1147 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 */
1148 } 1365 }
1149} 1366}
… …
1226cctx_destroy (coro_cctx *cctx) 1443cctx_destroy (coro_cctx *cctx)
1227{ 1444{
1228 if (!cctx) 1445 if (!cctx)
1229 return; 1446 return;
1230 1447
1448 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1449
1231 --cctx_count; 1450 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1451 coro_destroy (&cctx->cctx);
1233 1452
1234 /* coro_transfer creates new, empty cctx's */ 1453 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1454 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1512/** coroutine switching *****************************************************/
1294 1513
1295static void 1514static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1515transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1516{
1517 /* TODO: throwing up here is considered harmful */
1518
1298 if (expect_true (prev != next)) 1519 if (expect_true (prev != next))
1299 { 1520 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1521 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 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,");
1302 1523
1303 if (expect_false (next->flags & CF_RUNNING))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED)) 1524 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1307 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,");
1308 1526
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1527#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1528 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1311 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,");
1312#endif 1530#endif
1313 } 1531 }
1314} 1532}
1315 1533
1316/* always use the TRANSFER macro */ 1534/* always use the TRANSFER macro */
1317static void NOINLINE 1535static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1536transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1537{
1320 dSTACKLEVEL; 1538 dSTACKLEVEL;
1321 1539
1322 /* sometimes transfer is only called to set idle_sp */ 1540 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1541 if (expect_false (!prev))
1324 { 1542 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1543 cctx_current->idle_sp = STACKLEVEL;
1326 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 */
1327 } 1545 }
1328 else if (expect_true (prev != next)) 1546 else if (expect_true (prev != next))
1329 { 1547 {
1330 coro_cctx *prev__cctx; 1548 coro_cctx *cctx_prev;
1331 1549
1332 if (expect_false (prev->flags & CF_NEW)) 1550 if (expect_false (prev->flags & CF_NEW))
1333 { 1551 {
1334 /* create a new empty/source context */ 1552 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1553 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1554 prev->flags |= CF_RUNNING;
1338 } 1555 }
1339 1556
1340 prev->flags &= ~CF_RUNNING; 1557 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1558 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1559
1345 /* first get rid of the old state */ 1560 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1561 save_perl (aTHX_ prev);
1347 1562
1348 if (expect_false (next->flags & CF_NEW)) 1563 if (expect_false (next->flags & CF_NEW))
1349 { 1564 {
1350 /* need to start coroutine */ 1565 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1566 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1567 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1568 init_perl (aTHX_ next);
1354 } 1569 }
1355 else 1570 else
1356 load_perl (aTHX_ next); 1571 load_perl (aTHX_ next);
1357 1572
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1573 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1574 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1575 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1576 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1577 && !force_cctx
1365 )) 1578 ))
1366 { 1579 {
1367 /* 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 */
1368 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));
1369 1582
1370 prev->cctx = 0;
1371
1372 /* 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. */
1373 /* 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 */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1585 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1586 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1587 next->cctx = cctx_get (aTHX);
1377 1588
1378 cctx_put (prev__cctx); 1589 cctx_put (cctx_current);
1379 } 1590 }
1591 else
1592 prev->cctx = cctx_current;
1380 1593
1381 ++next->usecount; 1594 ++next->usecount;
1382 1595
1383 if (expect_true (!next->cctx)) 1596 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1597 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1598
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1599 next->cctx = 0;
1387 transfer_next = next;
1388 1600
1389 if (expect_false (prev__cctx != next->cctx)) 1601 if (expect_false (cctx_prev != cctx_current))
1390 { 1602 {
1391 prev__cctx->top_env = PL_top_env; 1603 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1604 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1605 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1606 }
1395 1607
1396 transfer_tail (aTHX); 1608 transfer_tail (aTHX);
1397 } 1609 }
1398} 1610}
… …
1405static int 1617static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1618coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1619{
1408 if (coro->flags & CF_DESTROYED) 1620 if (coro->flags & CF_DESTROYED)
1409 return 0; 1621 return 0;
1622
1623 if (coro->on_destroy && !PL_dirty)
1624 coro->on_destroy (aTHX_ coro);
1410 1625
1411 coro->flags |= CF_DESTROYED; 1626 coro->flags |= CF_DESTROYED;
1412 1627
1413 if (coro->flags & CF_READY) 1628 if (coro->flags & CF_READY)
1414 { 1629 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1630 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1631 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1632 --coro_nready;
1419 UNLOCK;
1420 } 1633 }
1421 else 1634 else
1422 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 */
1423 1636
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1637 if (coro->mainstack
1425 { 1638 && coro->mainstack != main_mainstack
1426 struct coro temp; 1639 && coro->slot
1427 1640 && !PL_dirty)
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro); 1641 destroy_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439
1440 cctx_destroy (coro->cctx);
1441 SvREFCNT_dec (coro->args);
1442 1642
1443 if (coro->next) coro->next->prev = coro->prev; 1643 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1644 if (coro->prev) coro->prev->next = coro->next;
1445 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);
1446 1652
1447 return 1; 1653 return 1;
1448} 1654}
1449 1655
1450static int 1656static int
… …
1502 TRANSFER (ta, 1); 1708 TRANSFER (ta, 1);
1503} 1709}
1504 1710
1505/** Coro ********************************************************************/ 1711/** Coro ********************************************************************/
1506 1712
1507static void 1713INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1714coro_enq (pTHX_ struct coro *coro)
1509{ 1715{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1716 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1717
1513static 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 *
1514coro_deq (pTHX) 1726coro_deq (pTHX)
1515{ 1727{
1516 int prio; 1728 int prio;
1517 1729
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1730 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1731 {
1520 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 }
1521 1741
1522 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;
1523} 1760}
1524 1761
1525static int 1762static int
1526api_ready (pTHX_ SV *coro_sv) 1763api_ready (pTHX_ SV *coro_sv)
1527{ 1764{
1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1531
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1765 struct coro *coro = SvSTATE (coro_sv);
1536 1766
1537 if (coro->flags & CF_READY) 1767 if (coro->flags & CF_READY)
1538 return 0; 1768 return 0;
1539 1769
1540 coro->flags |= CF_READY; 1770 coro->flags |= CF_READY;
1541 1771
1542 LOCK; 1772 coro_enq (aTHX_ coro);
1543 1773
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1774 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1775 if (coroapi.readyhook)
1546 1776 coroapi.readyhook ();
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1548 ++coro_nready;
1549
1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1570 1777
1571 return 1; 1778 return 1;
1572} 1779}
1573 1780
1574static int 1781static int
1575api_is_ready (pTHX_ SV *coro_sv) 1782api_is_ready (pTHX_ SV *coro_sv)
1576{ 1783{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1784 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1785}
1579 1786
1787/* expects to own a reference to next->hv */
1580INLINE void 1788INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1789prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1790{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1791 SV *prev_sv = SvRV (coro_current);
1792
1627 ta->prev = SvSTATE (prev_sv); 1793 ta->prev = SvSTATE_hv (prev_sv);
1794 ta->next = next;
1795
1628 TRANSFER_CHECK (*ta); 1796 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1797
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1798 SvRV_set (coro_current, (SV *)next->hv);
1632 1799
1633 LOCK;
1634 free_coro_mortal (aTHX); 1800 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1801 coro_mortal = prev_sv;
1636 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 }
1637} 1855}
1638 1856
1639INLINE void 1857INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1858prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1859{
… …
1662{ 1880{
1663 struct coro_transfer_args ta; 1881 struct coro_transfer_args ta;
1664 1882
1665 prepare_schedule (aTHX_ &ta); 1883 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1884 TRANSFER (ta, 1);
1885}
1886
1887static void
1888api_schedule_to (pTHX_ SV *coro_sv)
1889{
1890 struct coro_transfer_args ta;
1891 struct coro *next = SvSTATE (coro_sv);
1892
1893 SvREFCNT_inc_NN (coro_sv);
1894 prepare_schedule_to (aTHX_ &ta, next);
1667} 1895}
1668 1896
1669static int 1897static int
1670api_cede (pTHX) 1898api_cede (pTHX)
1671{ 1899{
… …
1700static void 1928static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1929api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1930{
1703 struct coro *coro = SvSTATE (coro_sv); 1931 struct coro *coro = SvSTATE (coro_sv);
1704 1932
1933 if (coro->flags & CF_RUNNING)
1934 croak ("cannot enable tracing on a running coroutine, caught");
1935
1705 if (flags & CC_TRACE) 1936 if (flags & CC_TRACE)
1706 { 1937 {
1707 if (!coro->cctx) 1938 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1939 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1940 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1941 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1942
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1943 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1944 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1945 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1946 {
… …
1720 else 1951 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1952 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1953 }
1723} 1954}
1724 1955
1725#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
1726static int 2021static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2022slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 2023{
1729 AV *padlist; 2024 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 2025 struct coro *coro = (struct coro *)frame->data;
1731 2026
1732 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 }
1733 2151
1734 return 0; 2152 return 0;
1735} 2153}
1736 2154
1737static MGVTBL coro_gensub_vtbl = { 2155static void
1738 0, 0, 0, 0, 2156slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2157{
1740}; 2158 SV *cb;
1741#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}
1742 2493
1743/*****************************************************************************/ 2494/*****************************************************************************/
1744/* PerlIO::cede */ 2495/* PerlIO::cede */
1745 2496
1746typedef struct 2497typedef struct
… …
1814 PerlIOBuf_get_cnt, 2565 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2566 PerlIOBuf_set_ptrcnt,
1816}; 2567};
1817 2568
1818/*****************************************************************************/ 2569/*****************************************************************************/
2570/* Coro::Semaphore & Coro::Signal */
1819 2571
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2572static SV *
1831pp_restore (pTHX) 2573coro_waitarray_new (pTHX_ int count)
1832{ 2574{
1833 dSP; 2575 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2576 AV *av = newAV ();
2577 SV **ary;
1834 2578
1835 PUSHMARK (SP); 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);
1836 2592
1837 EXTEND (SP, 3); 2593 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2594}
1845 2595
1846static void 2596/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2597
1852static void 2598static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2599coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2600{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2601 SV *count_sv = AvARRAY (av)[0];
2602 IV count = SvIVX (count_sv);
1856 2603
1857 frame->prepare = slf_prepare_set_stacklevel; 2604 count += adjust;
1858 frame->check = slf_check_nop; 2605 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2606
1862static void 2607 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2608 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2609 {
1921 /* first iteration */ 2610 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2611
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2612 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2613 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2614 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2615 cb = av_shift (av);
1931 2616
1932 /* pop args */ 2617 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2618 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2619 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2620 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2621 }
1942 2622 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2623 {
1973 if (sp == bot) 2624 dSP;
1974 XPUSHs (&PL_sv_undef); 2625 PUSHMARK (SP);
1975 2626 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2627 PUTBACK;
2628 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2629 }
1978 2630
1979 PUTBACK; 2631 SvREFCNT_dec (cb);
1980 } 2632 }
1981
1982 return NORMAL;
1983} 2633}
1984 2634
1985static void 2635static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2636coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2637{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2638 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2639 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2640}
2017
2018/*****************************************************************************/
2019 2641
2020static int 2642static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2643slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2644{
2023 AV *av = (AV *)frame->data; 2645 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2646 SV *count_sv = AvARRAY (av)[0];
2025 2647
2648 /* if we are about to throw, don't actually acquire the lock, just throw */
2649 if (CORO_THROW)
2650 return 0;
2026 if (SvIVX (count_sv) > 0) 2651 else if (SvIVX (count_sv) > 0)
2027 { 2652 {
2653 SvSTATE_current->on_destroy = 0;
2654
2655 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2656 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657 else
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2029 return 0; 2660 return 0;
2030 } 2661 }
2031 else 2662 else
2032 { 2663 {
2033 int i; 2664 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2673 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2674 return 1;
2044 } 2675 }
2045} 2676}
2046 2677
2047static void 2678static int
2679slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2682}
2683
2684static int
2685slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2686{
2687 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2688}
2689
2690static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2691slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2692{
2050 AV *av = (AV *)SvRV (arg [0]); 2693 AV *av = (AV *)SvRV (arg [0]);
2051 2694
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2695 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2696 {
… …
2058 { 2701 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2702 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2703
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2704 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2705 frame->prepare = prepare_schedule;
2063 }
2064 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);
2065 frame->check = slf_check_semaphore_down; 2717 frame->check = slf_check_semaphore_down;
2718}
2066 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;
2836};
2837
2838static void
2839coro_aio_callback (pTHX_ CV *cv)
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 {
2906 dSP;
2907 int i;
2908
2909 EXTEND (SP, AvFILLp (state) + 1);
2910 for (i = 0; i <= AvFILLp (state); ++i)
2911 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2912
2913 PUTBACK;
2914 }
2915
2916 return 0;
2917}
2918
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)
2931 {
2932 dSP;
2933
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);
2949 }
2950
2951 /* now call the original request */
2952 {
2953 dSP;
2954 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2955 int i;
2956
2957 PUSHMARK (SP);
2958
2959 /* first push all args to the stack */
2960 EXTEND (SP, items + 1);
2961
2962 for (i = 0; i < items; ++i)
2963 PUSHs (arg [i]);
2964
2965 /* now push the callback closure */
2966 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2967
2968 /* now call the AIO function - we assume our request is uncancelable */
2969 PUTBACK;
2970 call_sv ((SV *)req, G_VOID | G_DISCARD);
2971 }
2972
2973 /* now that the request is going, we loop till we have a result */
2974 frame->data = (void *)state;
2975 frame->prepare = prepare_schedule;
2976 frame->check = slf_check_aio_req;
2977}
2978
2979static void
2980coro_aio_req_xs (pTHX_ CV *cv)
2981{
2982 dXSARGS;
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;
2067} 3051}
2068 3052
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3053MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 3054
2071PROTOTYPES: DISABLE 3055PROTOTYPES: DISABLE
2072 3056
2073BOOT: 3057BOOT:
2074{ 3058{
2075#ifdef USE_ITHREADS 3059#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 3060# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 3061 coro_thx = PERL_GET_CONTEXT;
2079# endif 3062# endif
2080#endif 3063#endif
2081 BOOT_PAGESIZE; 3064 BOOT_PAGESIZE;
2082 3065
3066 cctx_current = cctx_new_empty ();
3067
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3068 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3069 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 3070
2086 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;
2087 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;
… …
2101 main_mainstack = PL_mainstack; 3086 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 3087 main_top_env = PL_top_env;
2103 3088
2104 while (main_top_env->je_prev) 3089 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 3090 main_top_env = main_top_env->je_prev;
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 }
2106 3101
2107 coroapi.ver = CORO_API_VERSION; 3102 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 3103 coroapi.rev = CORO_API_REVISION;
2109 3104
2110 coroapi.transfer = api_transfer; 3105 coroapi.transfer = api_transfer;
… …
2121 3116
2122 if (!svp) croak ("Time::HiRes is required"); 3117 if (!svp) croak ("Time::HiRes is required");
2123 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3118 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2124 3119
2125 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));
2126 } 3124 }
2127 3125
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3126 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2129} 3127}
2130 3128
2131SV * 3129SV *
2132new (char *klass, ...) 3130new (SV *klass, ...)
3131 ALIAS:
3132 Coro::new = 1
2133 CODE: 3133 CODE:
2134{ 3134 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2135 struct coro *coro; 3135 OUTPUT:
2136 MAGIC *mg;
2137 HV *hv;
2138 int i;
2139
2140 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV ();
2142 coro->flags = CF_NEW;
2143
2144 if (coro_first) coro_first->prev = coro;
2145 coro->next = coro_first;
2146 coro_first = coro;
2147
2148 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152
2153 av_extend (coro->args, items - 1);
2154 for (i = 1; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i)));
2156}
2157 OUTPUT:
2158 RETVAL 3136 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 3137
2165void 3138void
2166transfer (...) 3139transfer (...)
2167 PROTOTYPE: $$ 3140 PROTOTYPE: $$
2168 CODE: 3141 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3142 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 3143
2171bool 3144bool
2172_destroy (SV *coro_sv) 3145_destroy (SV *coro_sv)
2173 CODE: 3146 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3147 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2178void 3151void
2179_exit (int code) 3152_exit (int code)
2180 PROTOTYPE: $ 3153 PROTOTYPE: $
2181 CODE: 3154 CODE:
2182 _exit (code); 3155 _exit (code);
3156
3157SV *
3158clone (Coro::State coro)
3159 CODE:
3160{
3161#if CORO_CLONE
3162 struct coro *ncoro = coro_clone (aTHX_ coro);
3163 MAGIC *mg;
3164 /* TODO: too much duplication */
3165 ncoro->hv = newHV ();
3166 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3167 mg->mg_flags |= MGf_DUP;
3168 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3169#else
3170 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3171#endif
3172}
3173 OUTPUT:
3174 RETVAL
2183 3175
2184int 3176int
2185cctx_stacksize (int new_stacksize = 0) 3177cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 3178 PROTOTYPE: ;$
2187 CODE: 3179 CODE:
… …
2237 eval = 1 3229 eval = 1
2238 CODE: 3230 CODE:
2239{ 3231{
2240 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3232 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2241 { 3233 {
2242 struct coro temp; 3234 struct coro *current = SvSTATE_current;
2243 3235
2244 if (!(coro->flags & CF_RUNNING)) 3236 if (current != coro)
2245 { 3237 {
2246 PUTBACK; 3238 PUTBACK;
2247 save_perl (aTHX_ &temp); 3239 save_perl (aTHX_ current);
2248 load_perl (aTHX_ coro); 3240 load_perl (aTHX_ coro);
3241 SPAGAIN;
2249 } 3242 }
2250 3243
2251 {
2252 dSP;
2253 ENTER;
2254 SAVETMPS;
2255 PUTBACK;
2256 PUSHSTACK; 3244 PUSHSTACK;
3245
2257 PUSHMARK (SP); 3246 PUSHMARK (SP);
3247 PUTBACK;
2258 3248
2259 if (ix) 3249 if (ix)
2260 eval_sv (coderef, 0); 3250 eval_sv (coderef, 0);
2261 else 3251 else
2262 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3252 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2263 3253
2264 POPSTACK; 3254 POPSTACK;
2265 SPAGAIN; 3255 SPAGAIN;
2266 FREETMPS;
2267 LEAVE;
2268 PUTBACK;
2269 }
2270 3256
2271 if (!(coro->flags & CF_RUNNING)) 3257 if (current != coro)
2272 { 3258 {
3259 PUTBACK;
2273 save_perl (aTHX_ coro); 3260 save_perl (aTHX_ coro);
2274 load_perl (aTHX_ &temp); 3261 load_perl (aTHX_ current);
2275 SPAGAIN; 3262 SPAGAIN;
2276 } 3263 }
2277 } 3264 }
2278} 3265}
2279 3266
… …
2283 ALIAS: 3270 ALIAS:
2284 is_ready = CF_READY 3271 is_ready = CF_READY
2285 is_running = CF_RUNNING 3272 is_running = CF_RUNNING
2286 is_new = CF_NEW 3273 is_new = CF_NEW
2287 is_destroyed = CF_DESTROYED 3274 is_destroyed = CF_DESTROYED
3275 is_suspended = CF_SUSPENDED
2288 CODE: 3276 CODE:
2289 RETVAL = boolSV (coro->flags & ix); 3277 RETVAL = boolSV (coro->flags & ix);
2290 OUTPUT: 3278 OUTPUT:
2291 RETVAL 3279 RETVAL
2292 3280
2293void 3281void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3282throw (Coro::State self, SV *exception = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3283 PROTOTYPE: $;$
2296 CODE: 3284 CODE:
3285{
3286 struct coro *current = SvSTATE_current;
3287 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 3288 SvREFCNT_dec (*exceptionp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3289 SvGETMAGIC (exception);
3290 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3291}
2299 3292
2300void 3293void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3294api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3295 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3296 C_ARGS: aTHX_ coro, flags
2304 3297
2305SV * 3298SV *
2306has_cctx (Coro::State coro) 3299has_cctx (Coro::State coro)
2307 PROTOTYPE: $ 3300 PROTOTYPE: $
2308 CODE: 3301 CODE:
2309 RETVAL = boolSV (!!coro->cctx); 3302 /* maybe manage the running flag differently */
3303 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2310 OUTPUT: 3304 OUTPUT:
2311 RETVAL 3305 RETVAL
2312 3306
2313int 3307int
2314is_traced (Coro::State coro) 3308is_traced (Coro::State coro)
… …
2334 3328
2335void 3329void
2336force_cctx () 3330force_cctx ()
2337 PROTOTYPE: 3331 PROTOTYPE:
2338 CODE: 3332 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3333 cctx_current->idle_sp = 0;
2341 3334
2342void 3335void
2343swap_defsv (Coro::State self) 3336swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3337 PROTOTYPE: $
2345 ALIAS: 3338 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3346 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3347
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3348 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3349 }
2357 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
2358MODULE = Coro::State PACKAGE = Coro 3415MODULE = Coro::State PACKAGE = Coro
2359 3416
2360BOOT: 3417BOOT:
2361{ 3418{
2362 int i;
2363
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3419 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3420 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3421 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3422 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3423 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 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);
2370 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
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3434 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3435
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3436 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3437 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2375 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3438 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2376 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3439 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2377 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3440 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2378 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3441 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2379
2380 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2381 coro_ready[i] = newAV ();
2382 3442
2383 { 3443 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3444 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3445
2386 coroapi.schedule = api_schedule; 3446 coroapi.schedule = api_schedule;
3447 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3448 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3449 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3450 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3451 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3452 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3453 coroapi.current = coro_current;
2393 3454
2394 GCoroAPI = &coroapi; 3455 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3456 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3457 SvREADONLY_on (sv);
2397 } 3458 }
2398} 3459}
2399 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
2400void 3475void
2401schedule (...) 3476schedule (...)
2402 CODE: 3477 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 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);
2404 3489
2405void 3490void
2406cede (...) 3491cede (...)
2407 CODE: 3492 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3493 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3494
2410void 3495void
2411cede_notself (...) 3496cede_notself (...)
2412 CODE: 3497 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3498 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2414 3499
2415void 3500void
2416_set_current (SV *current) 3501_set_current (SV *current)
2417 PROTOTYPE: $ 3502 PROTOTYPE: $
2418 CODE: 3503 CODE:
… …
2421 3506
2422void 3507void
2423_set_readyhook (SV *hook) 3508_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3509 PROTOTYPE: $
2425 CODE: 3510 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3511 SvREFCNT_dec (coro_readyhook);
3512 SvGETMAGIC (hook);
3513 if (SvOK (hook))
3514 {
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3515 coro_readyhook = newSVsv (hook);
2429 UNLOCK; 3516 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3517 }
3518 else
3519 {
3520 coro_readyhook = 0;
3521 CORO_READYHOOK = 0;
3522 }
2430 3523
2431int 3524int
2432prio (Coro::State coro, int newprio = 0) 3525prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3526 PROTOTYPE: $;$
2434 ALIAS: 3527 ALIAS:
… …
2440 if (items > 1) 3533 if (items > 1)
2441 { 3534 {
2442 if (ix) 3535 if (ix)
2443 newprio = coro->prio - newprio; 3536 newprio = coro->prio - newprio;
2444 3537
2445 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3538 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2446 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3539 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2447 3540
2448 coro->prio = newprio; 3541 coro->prio = newprio;
2449 } 3542 }
2450} 3543}
2451 OUTPUT: 3544 OUTPUT:
… …
2465 CODE: 3558 CODE:
2466 RETVAL = coro_nready; 3559 RETVAL = coro_nready;
2467 OUTPUT: 3560 OUTPUT:
2468 RETVAL 3561 RETVAL
2469 3562
2470# for async_pool speedup
2471void 3563void
2472_pool_1 (SV *cb) 3564suspend (Coro::State self)
3565 PROTOTYPE: $
2473 CODE: 3566 CODE:
2474{ 3567 self->flags |= CF_SUSPENDED;
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3568
2482 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)
2483 { 3595 {
2484 SV *old = PL_diehook; 3596 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2485 PL_diehook = 0; 3597 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2486 SvREFCNT_dec (old); 3598 SvREFCNT_dec (sv);
2487 croak ("\3async_pool terminate\2\n");
2488 } 3599 }
2489 3600
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3601 {
2503 av_fill (defav, len - 1); 3602 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3603
2505 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;
2506 } 3608 }
2507}
2508 3609
2509void 3610 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3611
3612 if (GIMME_V != G_VOID)
3613 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3614 else
3615 SvREFCNT_dec (hv);
3616}
3617
3618SV *
3619rouse_cb ()
3620 PROTOTYPE:
2511 CODE: 3621 CODE:
2512{ 3622 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 3623 OUTPUT:
2585 RETVAL 3624 RETVAL
2586 3625
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3626void
2593_get_state (SV *self) 3627rouse_wait (...)
2594 PROTOTYPE: $ 3628 PROTOTYPE: ;$
2595 PPCODE: 3629 PPCODE:
2596{ 3630 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621 3631
2622void 3632void
2623_set_state (SV *state) 3633on_enter (SV *block)
3634 ALIAS:
3635 on_leave = 1
2624 PROTOTYPE: $ 3636 PROTOTYPE: &
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647void
2648_schedule (...)
2649 CODE: 3637 CODE:
2650{ 3638{
2651 static int incede; 3639 struct coro *coro = SvSTATE_current;
3640 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2652 3641
2653 api_cede_notself (aTHX); 3642 block = s_get_cv_croak (block);
2654 3643
2655 ++incede; 3644 if (!*avp)
2656 while (coro_nready >= incede && api_cede (aTHX)) 3645 *avp = newAV ();
2657 ;
2658 3646
2659 sv_setsv (sv_activity, &PL_sv_undef); 3647 av_push (*avp, SvREFCNT_inc (block));
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667 3648
2668 --incede; 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 */
2669} 3655}
2670 3656
2671 3657
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3658MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3659
2674BOOT: 3660BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3661 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3662
3663
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3664MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3665
2679SV * 3666SV *
2680new (SV *klass, SV *count_ = 0) 3667new (SV *klass, SV *count = 0)
2681 CODE: 3668 CODE:
2682{ 3669{
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3670 int semcnt = 1;
2684 AV *av = newAV (); 3671
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3672 if (count)
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 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 );
2687} 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);
2688 OUTPUT: 3693 OUTPUT:
2689 RETVAL 3694 RETVAL
2690 3695
2691SV * 3696SV *
2692count (SV *self) 3697count (SV *self)
… …
2698void 3703void
2699up (SV *self, int adjust = 1) 3704up (SV *self, int adjust = 1)
2700 ALIAS: 3705 ALIAS:
2701 adjust = 1 3706 adjust = 1
2702 CODE: 3707 CODE:
2703{ 3708 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (aTHX_ cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 3709
2730void 3710void
2731down (SV *self) 3711down (...)
2732 CODE: 3712 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3713 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3714
3715void
3716wait (...)
3717 CODE:
3718 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3719
2735void 3720void
2736try (SV *self) 3721try (SV *self)
2737 PPCODE: 3722 PPCODE:
2738{ 3723{
… …
2750 XSRETURN_NO; 3735 XSRETURN_NO;
2751} 3736}
2752 3737
2753void 3738void
2754waiters (SV *self) 3739waiters (SV *self)
2755 CODE: 3740 PPCODE:
2756{ 3741{
2757 AV *av = (AV *)SvRV (self); 3742 AV *av = (AV *)SvRV (self);
3743 int wcount = AvFILLp (av) + 1 - 1;
2758 3744
2759 if (GIMME_V == G_SCALAR) 3745 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3746 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3747 else
2762 { 3748 {
2763 int i; 3749 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3750 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3751 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3752 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3753 }
2768} 3754}
2769 3755
3756MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3757
3758void
3759_may_delete (SV *sem, int count, int extra_refs)
3760 PPCODE:
3761{
3762 AV *av = (AV *)SvRV (sem);
3763
3764 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3765 && AvFILLp (av) == 0 /* no waiters, just count */
3766 && SvIV (AvARRAY (av)[0]) == count)
3767 XSRETURN_YES;
3768
3769 XSRETURN_NO;
3770}
3771
3772MODULE = Coro::State PACKAGE = Coro::Signal
3773
3774SV *
3775new (SV *klass)
3776 CODE:
3777 RETVAL = sv_bless (
3778 coro_waitarray_new (aTHX_ 0),
3779 GvSTASH (CvGV (cv))
3780 );
3781 OUTPUT:
3782 RETVAL
3783
3784void
3785wait (...)
3786 CODE:
3787 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3788
3789void
3790broadcast (SV *self)
3791 CODE:
3792{
3793 AV *av = (AV *)SvRV (self);
3794 coro_signal_wake (aTHX_ av, AvFILLp (av));
3795}
3796
3797void
3798send (SV *self)
3799 CODE:
3800{
3801 AV *av = (AV *)SvRV (self);
3802
3803 if (AvFILLp (av))
3804 coro_signal_wake (aTHX_ av, 1);
3805 else
3806 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3807}
3808
3809IV
3810awaited (SV *self)
3811 CODE:
3812 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3813 OUTPUT:
3814 RETVAL
3815
3816
3817MODULE = Coro::State PACKAGE = Coro::AnyEvent
3818
3819BOOT:
3820 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3821
3822void
3823_schedule (...)
3824 CODE:
3825{
3826 static int incede;
3827
3828 api_cede_notself (aTHX);
3829
3830 ++incede;
3831 while (coro_nready >= incede && api_cede (aTHX))
3832 ;
3833
3834 sv_setsv (sv_activity, &PL_sv_undef);
3835 if (coro_nready >= incede)
3836 {
3837 PUSHMARK (SP);
3838 PUTBACK;
3839 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3840 }
3841
3842 --incede;
3843}
3844
3845
3846MODULE = Coro::State PACKAGE = Coro::AIO
3847
3848void
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}
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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