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Comparing Coro/Coro/State.xs (file contents):
Revision 1.273 by root, Fri Nov 14 23:48:10 2008 UTC vs.
Revision 1.377 by root, Sat Oct 3 17:55:04 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
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 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
108#endif 64#endif
109 65
110#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
117#endif 73#endif
118 74
119/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 76 * portable way as possible. */
121#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
123#else 80#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
125#endif 83#endif
126 84
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
128 86
129#if __GNUC__ >= 3 87#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 90# define INLINE static inline
133#else 91#else
134# define attribute(x) 92# define attribute(x)
135# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
136# define INLINE static 94# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
141 99
142#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#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 106# if CORO_PTHREAD
152static void *coro_thx; 107static void *coro_thx;
153# endif 108# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 109#endif
161 110
162# undef LOCK 111#ifdef __linux
163# define LOCK (void)0 112# include <time.h> /* for timespec */
164# undef UNLOCK 113# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 114# ifdef SYS_clock_gettime
166 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 116# define CORO_CLOCK_MONOTONIC 1
168struct io_state 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 118# endif
170 AV *res; 119#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 120
177static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
178 127
179static U32 cctx_gen; 128static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 129static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 130static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 132static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
187 139
188static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 142static SV *rv_diehook;
191static SV *rv_warnhook; 143static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
193 145
194/* async_pool helper stuff */ 146/* async_pool helper stuff */
195static SV *sv_pool_rss; 147static SV *sv_pool_rss;
196static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
198 153
199/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
200static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
201 162
202static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
204 165
205enum { 166enum {
… …
231 int valgrind_id; 192 int valgrind_id;
232#endif 193#endif
233 unsigned char flags; 194 unsigned char flags;
234} coro_cctx; 195} coro_cctx;
235 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
236enum { 201enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 207};
242 208
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 210typedef struct
245{ 211{
246 SV *defsv; 212 SV *defsv;
247 AV *defav; 213 AV *defav;
248 SV *errsv; 214 SV *errsv;
249 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
250#define VAR(name,type) type name; 217#define VAR(name,type) type name;
251# include "state.h" 218# include "state.h"
252#undef VAR 219#undef VAR
253} perl_slots; 220} perl_slots;
254 221
… …
257/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
258struct coro { 225struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 227 coro_cctx *cctx;
261 228
262 /* process data */ 229 /* ready queue */
230 struct coro *next_ready;
231
232 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 233 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 234 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
266 236
237 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
242 void (*on_destroy)(pTHX_ struct coro *coro);
271 243
272 /* statistics */ 244 /* statistics */
273 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
274 246
275 /* coro process data */ 247 /* coro process data */
276 int prio; 248 int prio;
277 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
278 251
279 /* async_pool */ 252 /* async_pool */
280 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
281 266
282 /* linked list */ 267 /* linked list */
283 struct coro *next, *prev; 268 struct coro *next, *prev;
284}; 269};
285 270
286typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
288 273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 277static struct CoroSLF slf_frame; /* the current slf frame */
290 278
291/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
292 280
293#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
299 287
300/* for Coro.pm */ 288/* for Coro.pm */
301static SV *coro_current; 289static SV *coro_current;
302static SV *coro_readyhook; 290static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
292static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 293static struct coro *coro_first;
305#define coro_nready coroapi.nready 294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
306 315
307/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
308 317
309static SV * 318static SV *
310coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 343 get_hv (name, create);
335#endif 344#endif
336 return get_hv (name, create); 345 return get_hv (name, create);
337} 346}
338 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
339static AV * 447static AV *
340coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
341{ 449{
342 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
344 452
345 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 459#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 461 --AvFILLp (padlist);
354 462
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
357 465
358 return newpadlist; 466 return newpadlist;
359} 467}
360 468
361static void 469static void
362free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
363{ 471{
364 /* may be during global destruction */ 472 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
366 { 474 {
367 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
368 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
369 { 478 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
371 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 481 I32 j = AvFILLp (av);
373 SV *sv; 482
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 488 }
380 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
382 } 494 }
383} 495}
384 496
385static int 497static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 499{
388 AV *padlist; 500 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
390 506
391 /* casting is fun. */ 507 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
394 510
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 512
397 return 0; 513 return 0;
398} 514}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 515
403static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 517 0, 0, 0, 0,
405 coro_cv_free 518 coro_cv_free
406}; 519};
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))
443 520
444/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
445static void 522static void
446get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
447{ 524{
… …
453 else 530 else
454 { 531 {
455#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
462#else 539#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 541#endif
465 } 542 }
466} 543}
467 544
468static void 545static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 553
477 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
478 555
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
481 558
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 560}
484 561
485/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
486 617
487static void 618static void
488load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
489{ 620{
490 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
491 c->slot = 0; 622 c->slot = 0;
492 623
493 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
494 625
495 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
499 631
500 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 633 # include "state.h"
502 #undef VAR 634 #undef VAR
503 635
… …
515 } 647 }
516 648
517 PUTBACK; 649 PUTBACK;
518 } 650 }
519 651
520 slf_frame = c->slf_frame; 652 slf_frame = c->slf_frame;
653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
521} 672}
522 673
523static void 674static void
524save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
525{ 676{
677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 696 c->slf_frame = slf_frame;
527 697
528 { 698 {
529 dSP; 699 dSP;
530 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
… …
542 { 712 {
543 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
544 { 714 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
546 716
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 718 {
549 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
550 720
551 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
552 { 722 {
… …
576 /* we manually unroll here, as usually 2 slots is enough */ 746 /* we manually unroll here, as usually 2 slots is enough */
577 if (SLOT_COUNT >= 1) CXINC; 747 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC; 748 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC; 749 if (SLOT_COUNT >= 3) CXINC;
580 { 750 {
581 int i; 751 unsigned int i;
582 for (i = 3; i < SLOT_COUNT; ++i) 752 for (i = 3; i < SLOT_COUNT; ++i)
583 CXINC; 753 CXINC;
584 } 754 }
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 755 cxstack_ix -= SLOT_COUNT; /* undo allocation */
586 756
587 c->mainstack = PL_mainstack; 757 c->mainstack = PL_mainstack;
588 758
589 { 759 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 760 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 761
592 slot->defav = GvAV (PL_defgv); 762 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 763 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 764 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 765 slot->irsgv = GvSV (irsgv);
766 slot->hinthv = GvHV (PL_hintgv);
596 767
597 #define VAR(name,type) slot->name = PL_ ## name; 768 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 769 # include "state.h"
599 #undef VAR 770 #undef VAR
600 } 771 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 776 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 777 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 778 * not usually need a lot of stackspace.
608 */ 779 */
609#if CORO_PREFER_PERL_FUNCTIONS 780#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 781# define coro_init_stacks(thx) init_stacks ()
611#else 782#else
612static void 783static void
613coro_init_stacks (pTHX) 784coro_init_stacks (pTHX)
614{ 785{
615 PL_curstackinfo = new_stackinfo(32, 8); 786 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 849#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 850 Safefree (PL_retstack);
680#endif 851#endif
681} 852}
682 853
854#define CORO_RSS \
855 rss += sizeof (SYM (curstackinfo)); \
856 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
857 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
858 rss += SYM (tmps_max) * sizeof (SV *); \
859 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
860 rss += SYM (scopestack_max) * sizeof (I32); \
861 rss += SYM (savestack_max) * sizeof (ANY);
862
683static size_t 863static size_t
684coro_rss (pTHX_ struct coro *coro) 864coro_rss (pTHX_ struct coro *coro)
685{ 865{
686 size_t rss = sizeof (*coro); 866 size_t rss = sizeof (*coro);
687 867
688 if (coro->mainstack) 868 if (coro->mainstack)
689 { 869 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 870 if (coro->flags & CF_RUNNING)
694 { 871 {
695 slot = &tmp_slot; 872 #define SYM(sym) PL_ ## sym
696 873 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 874 #undef SYM
700 } 875 }
701 else 876 else
702 slot = coro->slot;
703
704 if (slot)
705 { 877 {
706 rss += sizeof (slot->curstackinfo); 878 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 879 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 880 #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 } 881 }
718 } 882 }
719 883
720 return rss; 884 return rss;
721} 885}
… …
734#endif 898#endif
735 899
736/* 900/*
737 * This overrides the default magic get method of %SIG elements. 901 * 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 902 * 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 903 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 904 * 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 */ 905 */
745static int 906static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 907coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 908{
748 const char *s = MgPV_nolen_const (mg); 909 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 962 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 963
803 if (svp) 964 if (svp)
804 { 965 {
805 SV *old = *svp; 966 SV *old = *svp;
806 *svp = newSVsv (sv); 967 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 968 SvREFCNT_dec (old);
808 return 0; 969 return 0;
809 } 970 }
810 } 971 }
811 972
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 973 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 974}
814 975
815static void 976static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 977prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 978{
818 /* kind of mega-hacky, but works */ 979 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 980 ta->next = ta->prev = (struct coro *)ta;
820} 981}
821 982
822static int 983static int
823slf_check_nop (aTHX) 984slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 985{
825 return 0; 986 return 0;
826} 987}
827 988
828static void 989static int
990slf_check_repeat (pTHX_ struct CoroSLF *frame)
991{
992 return 1;
993}
994
995static UNOP init_perl_op;
996
997static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 998init_perl (pTHX_ struct coro *coro)
830{ 999{
831 /* 1000 /*
832 * emulate part of the perl startup here. 1001 * emulate part of the perl startup here.
833 */ 1002 */
834 coro_init_stacks (aTHX); 1003 coro_init_stacks (aTHX);
835 1004
836 PL_runops = RUNOPS_DEFAULT; 1005 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1006 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1007 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1008 PL_comppad = 0;
1009 PL_comppad_name = 0;
1010 PL_comppad_name_fill = 0;
1011 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1012 PL_curpm = 0;
841 PL_curpad = 0; 1013 PL_curpad = 0;
842 PL_localizing = 0; 1014 PL_localizing = 0;
843 PL_dirty = 0; 1015 PL_dirty = 0;
844 PL_restartop = 0; 1016 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1017#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1018 PL_parser = 0;
847#endif 1019#endif
1020 PL_hints = 0;
848 1021
849 /* recreate the die/warn hooks */ 1022 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1023 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1024 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 1025
853 GvSV (PL_defgv) = newSV (0); 1026 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1027 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1028 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1029 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1030 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1031 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1032 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1033
860 { 1034 {
861 dSP; 1035 dSP;
862 UNOP myop; 1036 UNOP myop;
863 1037
864 Zero (&myop, 1, UNOP); 1038 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1039 myop.op_next = Nullop;
1040 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1041 myop.op_flags = OPf_WANT_VOID;
867 1042
868 PUSHMARK (SP); 1043 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1044 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1045 PUTBACK;
871 PL_op = (OP *)&myop; 1046 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1047 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1048 }
875 1049
876 /* this newly created coroutine might be run on an existing cctx which most 1050 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1051 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1052 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1053 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1054 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 1055
1056 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1057 init_perl_op.op_next = PL_op;
1058 init_perl_op.op_type = OP_ENTERSUB;
1059 init_perl_op.op_ppaddr = pp_slf;
1060 /* no flags etc. required, as an init function won't be called */
1061
1062 PL_op = (OP *)&init_perl_op;
1063
1064 /* copy throw, in case it was set before init_perl */
1065 CORO_THROW = coro->except;
1066
1067 SWAP_SVS (coro);
1068
1069 if (expect_false (enable_times))
1070 {
1071 coro_times_update ();
1072 coro_times_sub (coro);
1073 }
1074}
1075
883static void 1076static void
884coro_destruct (pTHX_ struct coro *coro) 1077coro_unwind_stacks (pTHX)
885{ 1078{
886 if (!IN_DESTRUCT) 1079 if (!IN_DESTRUCT)
887 { 1080 {
888 /* restore all saved variables and stuff */ 1081 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1082 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1090 POPSTACK_TO (PL_mainstack);
898 1091
899 /* unwind main stack */ 1092 /* unwind main stack */
900 dounwind (-1); 1093 dounwind (-1);
901 } 1094 }
1095}
902 1096
903 SvREFCNT_dec (GvSV (PL_defgv)); 1097static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1098destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1099{
906 SvREFCNT_dec (PL_defoutgv); 1100 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1101
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1102 {
1103 struct coro *current = SvSTATE_current;
1104
1105 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1106
1107 save_perl (aTHX_ current);
1108 load_perl (aTHX_ coro);
1109
1110 coro_unwind_stacks (aTHX);
1111 coro_destruct_stacks (aTHX);
1112
1113 /* restore swapped sv's */
1114 SWAP_SVS (coro);
1115
1116 // now save some sv's to be free'd later
1117 svf [0] = GvSV (PL_defgv);
1118 svf [1] = (SV *)GvAV (PL_defgv);
1119 svf [2] = GvSV (PL_errgv);
1120 svf [3] = (SV *)PL_defoutgv;
1121 svf [4] = PL_rs;
1122 svf [5] = GvSV (irsgv);
1123 svf [6] = (SV *)GvHV (PL_hintgv);
1124 svf [7] = PL_diehook;
1125 svf [8] = PL_warnhook;
1126 assert (9 == sizeof (svf) / sizeof (*svf));
1127
1128 load_perl (aTHX_ current);
1129 }
1130
1131 {
1132 unsigned int i;
1133
1134 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1135 SvREFCNT_dec (svf [i]);
1136
913 SvREFCNT_dec (coro->saved_deffh); 1137 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1138 SvREFCNT_dec (coro->rouse_cb);
915 1139 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1140 SvREFCNT_dec (coro->invoke_av);
1141 }
917} 1142}
918 1143
919INLINE void 1144INLINE void
920free_coro_mortal (pTHX) 1145free_coro_mortal (pTHX)
921{ 1146{
… …
929static int 1154static int
930runops_trace (pTHX) 1155runops_trace (pTHX)
931{ 1156{
932 COP *oldcop = 0; 1157 COP *oldcop = 0;
933 int oldcxix = -2; 1158 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1159
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1160 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1161 {
939 PERL_ASYNC_CHECK (); 1162 PERL_ASYNC_CHECK ();
940 1163
941 if (cctx->flags & CC_TRACE_ALL) 1164 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1165 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1166 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1167 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1168 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1169 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1170 AV *av = newAV (); /* return values */
948 SV **cb; 1171 SV **cb;
… …
985 1208
986 if (PL_curcop != &PL_compiling) 1209 if (PL_curcop != &PL_compiling)
987 { 1210 {
988 SV **cb; 1211 SV **cb;
989 1212
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1213 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1214 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1215 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1216
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1217 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1218 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1219 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1220 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1221 SV *fullname = sv_2mortal (newSV (0));
1000 1222
1001 if (isGV (gv)) 1223 if (isGV (gv))
… …
1006 SAVETMPS; 1228 SAVETMPS;
1007 EXTEND (SP, 3); 1229 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1230 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1231 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1232 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1233 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1234 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1235 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1236 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1237 SPAGAIN;
1016 FREETMPS; 1238 FREETMPS;
… …
1019 } 1241 }
1020 1242
1021 oldcxix = cxstack_ix; 1243 oldcxix = cxstack_ix;
1022 } 1244 }
1023 1245
1024 if (cctx->flags & CC_TRACE_LINE) 1246 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1247 {
1026 dSP; 1248 dSP;
1027 1249
1028 PL_runops = RUNOPS_DEFAULT; 1250 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1251 ENTER;
… …
1048 1270
1049 TAINT_NOT; 1271 TAINT_NOT;
1050 return 0; 1272 return 0;
1051} 1273}
1052 1274
1275static struct CoroSLF cctx_ssl_frame;
1276
1053static void 1277static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1278slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1279{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1280 ta->prev = 0;
1058} 1281}
1059 1282
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1283static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1284slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1285{
1063/* also initialises PL_top_env */ 1286 *frame = cctx_ssl_frame;
1287
1288 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1289}
1290
1291/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1292static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1293cctx_prepare (pTHX)
1066{ 1294{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1295 PL_top_env = &PL_start_env;
1071 1296
1072 if (cctx->flags & CC_TRACE) 1297 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1298 PL_runops = runops_trace;
1074 1299
1075 Zero (&myop, 1, UNOP); 1300 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1301 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1302 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1303 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1304
1079 PUSHMARK (SP); 1305 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1306 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1307
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1308 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1309 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1310}
1088 1311
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1312/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1313INLINE void
1091transfer_tail (pTHX) 1314transfer_tail (pTHX)
1092{ 1315{
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); 1316 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} 1317}
1109 1318
1110/* 1319/*
1111 * this is a _very_ stripped down perl interpreter ;) 1320 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1321 */
… …
1124 /* normally we would need to skip the entersub here */ 1333 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1334 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1335 /* PL_nop = PL_nop->op_next */
1127 1336
1128 /* inject a fake subroutine call to cctx_init */ 1337 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1338 cctx_prepare (aTHX);
1130 1339
1131 /* cctx_run is the alternative tail of transfer() */ 1340 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1341 transfer_tail (aTHX);
1134 1342
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1343 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1344 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1345 perl_run (PL_curinterp);
1346 /*
1347 * Unfortunately, there is no way to get at the return values of the
1348 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1349 * runtime errors here, as this is just a random interpreter, not a thread.
1350 */
1138 1351
1139 /* 1352 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1353 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1354 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1355 * reason for perl_run to return. We try to exit by jumping to the
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1356 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1357 * coroutine as Coro has no such concept.
1358 * This actually isn't valid with the pthread backend, but OSes requiring
1359 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1360 */
1146 PL_top_env = main_top_env; 1361 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1362 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1363 }
1149} 1364}
… …
1226cctx_destroy (coro_cctx *cctx) 1441cctx_destroy (coro_cctx *cctx)
1227{ 1442{
1228 if (!cctx) 1443 if (!cctx)
1229 return; 1444 return;
1230 1445
1446 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1447
1231 --cctx_count; 1448 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1449 coro_destroy (&cctx->cctx);
1233 1450
1234 /* coro_transfer creates new, empty cctx's */ 1451 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1452 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1510/** coroutine switching *****************************************************/
1294 1511
1295static void 1512static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1513transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1514{
1515 /* TODO: throwing up here is considered harmful */
1516
1298 if (expect_true (prev != next)) 1517 if (expect_true (prev != next))
1299 { 1518 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1519 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,"); 1520 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1521
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)) 1522 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,"); 1523 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1524
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1525#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1526 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,"); 1527 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1528#endif
1313 } 1529 }
1314} 1530}
1315 1531
1316/* always use the TRANSFER macro */ 1532/* always use the TRANSFER macro */
1317static void NOINLINE 1533static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1534transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1535{
1320 dSTACKLEVEL; 1536 dSTACKLEVEL;
1321 1537
1322 /* sometimes transfer is only called to set idle_sp */ 1538 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1539 if (expect_false (!prev))
1324 { 1540 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1541 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1542 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1543 }
1328 else if (expect_true (prev != next)) 1544 else if (expect_true (prev != next))
1329 { 1545 {
1330 coro_cctx *prev__cctx; 1546 coro_cctx *cctx_prev;
1331 1547
1332 if (expect_false (prev->flags & CF_NEW)) 1548 if (expect_false (prev->flags & CF_NEW))
1333 { 1549 {
1334 /* create a new empty/source context */ 1550 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1551 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1552 prev->flags |= CF_RUNNING;
1338 } 1553 }
1339 1554
1340 prev->flags &= ~CF_RUNNING; 1555 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1556 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1557
1345 /* first get rid of the old state */ 1558 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1559 save_perl (aTHX_ prev);
1347 1560
1348 if (expect_false (next->flags & CF_NEW)) 1561 if (expect_false (next->flags & CF_NEW))
1349 { 1562 {
1350 /* need to start coroutine */ 1563 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1564 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1565 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1566 init_perl (aTHX_ next);
1354 } 1567 }
1355 else 1568 else
1356 load_perl (aTHX_ next); 1569 load_perl (aTHX_ next);
1357 1570
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1571 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1572 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1573 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1574 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1575 && !force_cctx
1365 )) 1576 ))
1366 { 1577 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1578 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1579 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1580
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 */ 1581 /* 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 */ 1582 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1583 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1584 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1585 next->cctx = cctx_get (aTHX);
1377 1586
1378 cctx_put (prev__cctx); 1587 cctx_put (cctx_current);
1379 } 1588 }
1589 else
1590 prev->cctx = cctx_current;
1380 1591
1381 ++next->usecount; 1592 ++next->usecount;
1382 1593
1383 if (expect_true (!next->cctx)) 1594 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1595 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1596
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1597 next->cctx = 0;
1387 transfer_next = next;
1388 1598
1389 if (expect_false (prev__cctx != next->cctx)) 1599 if (expect_false (cctx_prev != cctx_current))
1390 { 1600 {
1391 prev__cctx->top_env = PL_top_env; 1601 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1602 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1603 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1604 }
1395 1605
1396 transfer_tail (aTHX); 1606 transfer_tail (aTHX);
1397 } 1607 }
1398} 1608}
… …
1405static int 1615static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1616coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1617{
1408 if (coro->flags & CF_DESTROYED) 1618 if (coro->flags & CF_DESTROYED)
1409 return 0; 1619 return 0;
1620
1621 if (coro->on_destroy && !PL_dirty)
1622 coro->on_destroy (aTHX_ coro);
1410 1623
1411 coro->flags |= CF_DESTROYED; 1624 coro->flags |= CF_DESTROYED;
1412 1625
1413 if (coro->flags & CF_READY) 1626 if (coro->flags & CF_READY)
1414 { 1627 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1628 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1629 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1630 --coro_nready;
1419 UNLOCK;
1420 } 1631 }
1421 else 1632 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1633 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1634
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1635 if (coro->mainstack
1425 { 1636 && coro->mainstack != main_mainstack
1426 struct coro temp; 1637 && coro->slot
1427 1638 && !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); 1639 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 1640
1443 if (coro->next) coro->next->prev = coro->prev; 1641 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1642 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1643 if (coro == coro_first) coro_first = coro->next;
1644
1645 cctx_destroy (coro->cctx);
1646 SvREFCNT_dec (coro->startcv);
1647 SvREFCNT_dec (coro->args);
1648 SvREFCNT_dec (coro->swap_sv);
1649 SvREFCNT_dec (CORO_THROW);
1446 1650
1447 return 1; 1651 return 1;
1448} 1652}
1449 1653
1450static int 1654static int
… …
1502 TRANSFER (ta, 1); 1706 TRANSFER (ta, 1);
1503} 1707}
1504 1708
1505/** Coro ********************************************************************/ 1709/** Coro ********************************************************************/
1506 1710
1507static void 1711INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1712coro_enq (pTHX_ struct coro *coro)
1509{ 1713{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1714 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1715
1513static SV * 1716 SvREFCNT_inc_NN (coro->hv);
1717
1718 coro->next_ready = 0;
1719 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1720 ready [1] = coro;
1721}
1722
1723INLINE struct coro *
1514coro_deq (pTHX) 1724coro_deq (pTHX)
1515{ 1725{
1516 int prio; 1726 int prio;
1517 1727
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1728 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1729 {
1520 return av_shift (coro_ready [prio]); 1730 struct coro **ready = coro_ready [prio];
1731
1732 if (ready [0])
1733 {
1734 struct coro *coro = ready [0];
1735 ready [0] = coro->next_ready;
1736 return coro;
1737 }
1738 }
1521 1739
1522 return 0; 1740 return 0;
1741}
1742
1743static void
1744invoke_sv_ready_hook_helper (void)
1745{
1746 dTHX;
1747 dSP;
1748
1749 ENTER;
1750 SAVETMPS;
1751
1752 PUSHMARK (SP);
1753 PUTBACK;
1754 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1755
1756 FREETMPS;
1757 LEAVE;
1523} 1758}
1524 1759
1525static int 1760static int
1526api_ready (pTHX_ SV *coro_sv) 1761api_ready (pTHX_ SV *coro_sv)
1527{ 1762{
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); 1763 struct coro *coro = SvSTATE (coro_sv);
1536 1764
1537 if (coro->flags & CF_READY) 1765 if (coro->flags & CF_READY)
1538 return 0; 1766 return 0;
1539 1767
1540 coro->flags |= CF_READY; 1768 coro->flags |= CF_READY;
1541 1769
1542 LOCK; 1770 coro_enq (aTHX_ coro);
1543 1771
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1772 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1773 if (coroapi.readyhook)
1546 1774 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 1775
1571 return 1; 1776 return 1;
1572} 1777}
1573 1778
1574static int 1779static int
1575api_is_ready (pTHX_ SV *coro_sv) 1780api_is_ready (pTHX_ SV *coro_sv)
1576{ 1781{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1782 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1783}
1579 1784
1785/* expects to own a reference to next->hv */
1580INLINE void 1786INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1787prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1788{
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); 1789 SV *prev_sv = SvRV (coro_current);
1790
1627 ta->prev = SvSTATE (prev_sv); 1791 ta->prev = SvSTATE_hv (prev_sv);
1792 ta->next = next;
1793
1628 TRANSFER_CHECK (*ta); 1794 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1795
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1796 SvRV_set (coro_current, (SV *)next->hv);
1632 1797
1633 LOCK;
1634 free_coro_mortal (aTHX); 1798 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1799 coro_mortal = prev_sv;
1636 UNLOCK; 1800}
1801
1802static void
1803prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1804{
1805 for (;;)
1806 {
1807 struct coro *next = coro_deq (aTHX);
1808
1809 if (expect_true (next))
1810 {
1811 /* cannot transfer to destroyed coros, skip and look for next */
1812 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1813 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1814 else
1815 {
1816 next->flags &= ~CF_READY;
1817 --coro_nready;
1818
1819 prepare_schedule_to (aTHX_ ta, next);
1820 break;
1821 }
1822 }
1823 else
1824 {
1825 /* nothing to schedule: call the idle handler */
1826 if (SvROK (sv_idle)
1827 && SvOBJECT (SvRV (sv_idle)))
1828 {
1829 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1830 api_ready (aTHX_ SvRV (sv_idle));
1831 --coro_nready;
1832 }
1833 else
1834 {
1835 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1836 dSP;
1837
1838 ENTER;
1839 SAVETMPS;
1840
1841 PUSHMARK (SP);
1842 PUTBACK;
1843 call_sv (sv_idle, G_VOID | G_DISCARD);
1844
1845 FREETMPS;
1846 LEAVE;
1847 }
1848 }
1849 }
1637} 1850}
1638 1851
1639INLINE void 1852INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1853prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1854{
… …
1662{ 1875{
1663 struct coro_transfer_args ta; 1876 struct coro_transfer_args ta;
1664 1877
1665 prepare_schedule (aTHX_ &ta); 1878 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1879 TRANSFER (ta, 1);
1880}
1881
1882static void
1883api_schedule_to (pTHX_ SV *coro_sv)
1884{
1885 struct coro_transfer_args ta;
1886 struct coro *next = SvSTATE (coro_sv);
1887
1888 SvREFCNT_inc_NN (coro_sv);
1889 prepare_schedule_to (aTHX_ &ta, next);
1667} 1890}
1668 1891
1669static int 1892static int
1670api_cede (pTHX) 1893api_cede (pTHX)
1671{ 1894{
… …
1700static void 1923static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1924api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1925{
1703 struct coro *coro = SvSTATE (coro_sv); 1926 struct coro *coro = SvSTATE (coro_sv);
1704 1927
1928 if (coro->flags & CF_RUNNING)
1929 croak ("cannot enable tracing on a running coroutine, caught");
1930
1705 if (flags & CC_TRACE) 1931 if (flags & CC_TRACE)
1706 { 1932 {
1707 if (!coro->cctx) 1933 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1934 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1935 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1936 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1937
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1938 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1939 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1940 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1941 {
… …
1720 else 1946 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1947 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1948 }
1723} 1949}
1724 1950
1725#if 0 1951static void
1952coro_call_on_destroy (pTHX_ struct coro *coro)
1953{
1954 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1955 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1956
1957 if (on_destroyp)
1958 {
1959 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1960
1961 while (AvFILLp (on_destroy) >= 0)
1962 {
1963 dSP; /* don't disturb outer sp */
1964 SV *cb = av_pop (on_destroy);
1965
1966 PUSHMARK (SP);
1967
1968 if (statusp)
1969 {
1970 int i;
1971 AV *status = (AV *)SvRV (*statusp);
1972 EXTEND (SP, AvFILLp (status) + 1);
1973
1974 for (i = 0; i <= AvFILLp (status); ++i)
1975 PUSHs (AvARRAY (status)[i]);
1976 }
1977
1978 PUTBACK;
1979 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1980 }
1981 }
1982}
1983
1984static void
1985slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1986{
1987 int i;
1988 HV *hv = (HV *)SvRV (coro_current);
1989 AV *av = newAV ();
1990
1991 /* items are actually not so common, so optimise for this case */
1992 if (items)
1993 {
1994 av_extend (av, items - 1);
1995
1996 for (i = 0; i < items; ++i)
1997 av_push (av, SvREFCNT_inc_NN (arg [i]));
1998 }
1999
2000 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2001
2002 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2003 api_ready (aTHX_ sv_manager);
2004
2005 frame->prepare = prepare_schedule;
2006 frame->check = slf_check_repeat;
2007
2008 /* as a minor optimisation, we could unwind all stacks here */
2009 /* but that puts extra pressure on pp_slf, and is not worth much */
2010 /*coro_unwind_stacks (aTHX);*/
2011}
2012
2013/*****************************************************************************/
2014/* async pool handler */
2015
1726static int 2016static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2017slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 2018{
1729 AV *padlist; 2019 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 2020 struct coro *coro = (struct coro *)frame->data;
1731 2021
1732 abort (); 2022 if (!coro->invoke_cb)
2023 return 1; /* loop till we have invoke */
2024 else
2025 {
2026 hv_store (hv, "desc", sizeof ("desc") - 1,
2027 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2028
2029 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2030
2031 {
2032 dSP;
2033 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2034 PUTBACK;
2035 }
2036
2037 SvREFCNT_dec (GvAV (PL_defgv));
2038 GvAV (PL_defgv) = coro->invoke_av;
2039 coro->invoke_av = 0;
2040
2041 return 0;
2042 }
2043}
2044
2045static void
2046slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2047{
2048 HV *hv = (HV *)SvRV (coro_current);
2049 struct coro *coro = SvSTATE_hv ((SV *)hv);
2050
2051 if (expect_true (coro->saved_deffh))
2052 {
2053 /* subsequent iteration */
2054 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2055 coro->saved_deffh = 0;
2056
2057 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2058 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2059 {
2060 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2061 coro->invoke_av = newAV ();
2062
2063 frame->prepare = prepare_nop;
2064 }
2065 else
2066 {
2067 av_clear (GvAV (PL_defgv));
2068 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2069
2070 coro->prio = 0;
2071
2072 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2073 api_trace (aTHX_ coro_current, 0);
2074
2075 frame->prepare = prepare_schedule;
2076 av_push (av_async_pool, SvREFCNT_inc (hv));
2077 }
2078 }
2079 else
2080 {
2081 /* first iteration, simply fall through */
2082 frame->prepare = prepare_nop;
2083 }
2084
2085 frame->check = slf_check_pool_handler;
2086 frame->data = (void *)coro;
2087}
2088
2089/*****************************************************************************/
2090/* rouse callback */
2091
2092#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2093
2094static void
2095coro_rouse_callback (pTHX_ CV *cv)
2096{
2097 dXSARGS;
2098 SV *data = (SV *)S_GENSUB_ARG;
2099
2100 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2101 {
2102 /* first call, set args */
2103 SV *coro = SvRV (data);
2104 AV *av = newAV ();
2105
2106 SvRV_set (data, (SV *)av);
2107
2108 /* better take a full copy of the arguments */
2109 while (items--)
2110 av_store (av, items, newSVsv (ST (items)));
2111
2112 api_ready (aTHX_ coro);
2113 SvREFCNT_dec (coro);
2114 }
2115
2116 XSRETURN_EMPTY;
2117}
2118
2119static int
2120slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2121{
2122 SV *data = (SV *)frame->data;
2123
2124 if (CORO_THROW)
2125 return 0;
2126
2127 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2128 return 1;
2129
2130 /* now push all results on the stack */
2131 {
2132 dSP;
2133 AV *av = (AV *)SvRV (data);
2134 int i;
2135
2136 EXTEND (SP, AvFILLp (av) + 1);
2137 for (i = 0; i <= AvFILLp (av); ++i)
2138 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2139
2140 /* we have stolen the elements, so set length to zero and free */
2141 AvFILLp (av) = -1;
2142 av_undef (av);
2143
2144 PUTBACK;
2145 }
1733 2146
1734 return 0; 2147 return 0;
1735} 2148}
1736 2149
1737static MGVTBL coro_gensub_vtbl = { 2150static void
1738 0, 0, 0, 0, 2151slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2152{
1740}; 2153 SV *cb;
1741#endif 2154
2155 if (items)
2156 cb = arg [0];
2157 else
2158 {
2159 struct coro *coro = SvSTATE_current;
2160
2161 if (!coro->rouse_cb)
2162 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2163
2164 cb = sv_2mortal (coro->rouse_cb);
2165 coro->rouse_cb = 0;
2166 }
2167
2168 if (!SvROK (cb)
2169 || SvTYPE (SvRV (cb)) != SVt_PVCV
2170 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2171 croak ("Coro::rouse_wait called with illegal callback argument,");
2172
2173 {
2174 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2175 SV *data = (SV *)S_GENSUB_ARG;
2176
2177 frame->data = (void *)data;
2178 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2179 frame->check = slf_check_rouse_wait;
2180 }
2181}
2182
2183static SV *
2184coro_new_rouse_cb (pTHX)
2185{
2186 HV *hv = (HV *)SvRV (coro_current);
2187 struct coro *coro = SvSTATE_hv (hv);
2188 SV *data = newRV_inc ((SV *)hv);
2189 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2190
2191 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2192 SvREFCNT_dec (data); /* magicext increases the refcount */
2193
2194 SvREFCNT_dec (coro->rouse_cb);
2195 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2196
2197 return cb;
2198}
2199
2200/*****************************************************************************/
2201/* schedule-like-function opcode (SLF) */
2202
2203static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2204static const CV *slf_cv;
2205static SV **slf_argv;
2206static int slf_argc, slf_arga; /* count, allocated */
2207static I32 slf_ax; /* top of stack, for restore */
2208
2209/* this restores the stack in the case we patched the entersub, to */
2210/* recreate the stack frame as perl will on following calls */
2211/* since entersub cleared the stack */
2212static OP *
2213pp_restore (pTHX)
2214{
2215 int i;
2216 SV **SP = PL_stack_base + slf_ax;
2217
2218 PUSHMARK (SP);
2219
2220 EXTEND (SP, slf_argc + 1);
2221
2222 for (i = 0; i < slf_argc; ++i)
2223 PUSHs (sv_2mortal (slf_argv [i]));
2224
2225 PUSHs ((SV *)CvGV (slf_cv));
2226
2227 RETURNOP (slf_restore.op_first);
2228}
2229
2230static void
2231slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2232{
2233 SV **arg = (SV **)slf_frame.data;
2234
2235 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2236}
2237
2238static void
2239slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2240{
2241 if (items != 2)
2242 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2243
2244 frame->prepare = slf_prepare_transfer;
2245 frame->check = slf_check_nop;
2246 frame->data = (void *)arg; /* let's hope it will stay valid */
2247}
2248
2249static void
2250slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2251{
2252 frame->prepare = prepare_schedule;
2253 frame->check = slf_check_nop;
2254}
2255
2256static void
2257slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2258{
2259 struct coro *next = (struct coro *)slf_frame.data;
2260
2261 SvREFCNT_inc_NN (next->hv);
2262 prepare_schedule_to (aTHX_ ta, next);
2263}
2264
2265static void
2266slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2267{
2268 if (!items)
2269 croak ("Coro::schedule_to expects a coroutine argument, caught");
2270
2271 frame->data = (void *)SvSTATE (arg [0]);
2272 frame->prepare = slf_prepare_schedule_to;
2273 frame->check = slf_check_nop;
2274}
2275
2276static void
2277slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2278{
2279 api_ready (aTHX_ SvRV (coro_current));
2280
2281 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2282}
2283
2284static void
2285slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2286{
2287 frame->prepare = prepare_cede;
2288 frame->check = slf_check_nop;
2289}
2290
2291static void
2292slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2293{
2294 frame->prepare = prepare_cede_notself;
2295 frame->check = slf_check_nop;
2296}
2297
2298/*
2299 * these not obviously related functions are all rolled into one
2300 * function to increase chances that they all will call transfer with the same
2301 * stack offset
2302 * SLF stands for "schedule-like-function".
2303 */
2304static OP *
2305pp_slf (pTHX)
2306{
2307 I32 checkmark; /* mark SP to see how many elements check has pushed */
2308
2309 /* set up the slf frame, unless it has already been set-up */
2310 /* the latter happens when a new coro has been started */
2311 /* or when a new cctx was attached to an existing coroutine */
2312 if (expect_true (!slf_frame.prepare))
2313 {
2314 /* first iteration */
2315 dSP;
2316 SV **arg = PL_stack_base + TOPMARK + 1;
2317 int items = SP - arg; /* args without function object */
2318 SV *gv = *sp;
2319
2320 /* do a quick consistency check on the "function" object, and if it isn't */
2321 /* for us, divert to the real entersub */
2322 if (SvTYPE (gv) != SVt_PVGV
2323 || !GvCV (gv)
2324 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2325 return PL_ppaddr[OP_ENTERSUB](aTHX);
2326
2327 if (!(PL_op->op_flags & OPf_STACKED))
2328 {
2329 /* ampersand-form of call, use @_ instead of stack */
2330 AV *av = GvAV (PL_defgv);
2331 arg = AvARRAY (av);
2332 items = AvFILLp (av) + 1;
2333 }
2334
2335 /* now call the init function, which needs to set up slf_frame */
2336 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2337 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2338
2339 /* pop args */
2340 SP = PL_stack_base + POPMARK;
2341
2342 PUTBACK;
2343 }
2344
2345 /* now that we have a slf_frame, interpret it! */
2346 /* we use a callback system not to make the code needlessly */
2347 /* complicated, but so we can run multiple perl coros from one cctx */
2348
2349 do
2350 {
2351 struct coro_transfer_args ta;
2352
2353 slf_frame.prepare (aTHX_ &ta);
2354 TRANSFER (ta, 0);
2355
2356 checkmark = PL_stack_sp - PL_stack_base;
2357 }
2358 while (slf_frame.check (aTHX_ &slf_frame));
2359
2360 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2361
2362 /* exception handling */
2363 if (expect_false (CORO_THROW))
2364 {
2365 SV *exception = sv_2mortal (CORO_THROW);
2366
2367 CORO_THROW = 0;
2368 sv_setsv (ERRSV, exception);
2369 croak (0);
2370 }
2371
2372 /* return value handling - mostly like entersub */
2373 /* make sure we put something on the stack in scalar context */
2374 if (GIMME_V == G_SCALAR)
2375 {
2376 dSP;
2377 SV **bot = PL_stack_base + checkmark;
2378
2379 if (sp == bot) /* too few, push undef */
2380 bot [1] = &PL_sv_undef;
2381 else if (sp != bot + 1) /* too many, take last one */
2382 bot [1] = *sp;
2383
2384 SP = bot + 1;
2385
2386 PUTBACK;
2387 }
2388
2389 return NORMAL;
2390}
2391
2392static void
2393api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2394{
2395 int i;
2396 SV **arg = PL_stack_base + ax;
2397 int items = PL_stack_sp - arg + 1;
2398
2399 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2400
2401 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2402 && PL_op->op_ppaddr != pp_slf)
2403 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2404
2405 CvFLAGS (cv) |= CVf_SLF;
2406 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2407 slf_cv = cv;
2408
2409 /* we patch the op, and then re-run the whole call */
2410 /* we have to put the same argument on the stack for this to work */
2411 /* and this will be done by pp_restore */
2412 slf_restore.op_next = (OP *)&slf_restore;
2413 slf_restore.op_type = OP_CUSTOM;
2414 slf_restore.op_ppaddr = pp_restore;
2415 slf_restore.op_first = PL_op;
2416
2417 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2418
2419 if (PL_op->op_flags & OPf_STACKED)
2420 {
2421 if (items > slf_arga)
2422 {
2423 slf_arga = items;
2424 free (slf_argv);
2425 slf_argv = malloc (slf_arga * sizeof (SV *));
2426 }
2427
2428 slf_argc = items;
2429
2430 for (i = 0; i < items; ++i)
2431 slf_argv [i] = SvREFCNT_inc (arg [i]);
2432 }
2433 else
2434 slf_argc = 0;
2435
2436 PL_op->op_ppaddr = pp_slf;
2437 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2438
2439 PL_op = (OP *)&slf_restore;
2440}
2441
2442/*****************************************************************************/
2443/* dynamic wind */
2444
2445static void
2446on_enterleave_call (pTHX_ SV *cb)
2447{
2448 dSP;
2449
2450 PUSHSTACK;
2451
2452 PUSHMARK (SP);
2453 PUTBACK;
2454 call_sv (cb, G_VOID | G_DISCARD);
2455 SPAGAIN;
2456
2457 POPSTACK;
2458}
2459
2460static SV *
2461coro_avp_pop_and_free (pTHX_ AV **avp)
2462{
2463 AV *av = *avp;
2464 SV *res = av_pop (av);
2465
2466 if (AvFILLp (av) < 0)
2467 {
2468 *avp = 0;
2469 SvREFCNT_dec (av);
2470 }
2471
2472 return res;
2473}
2474
2475static void
2476coro_pop_on_enter (pTHX_ void *coro)
2477{
2478 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2479 SvREFCNT_dec (cb);
2480}
2481
2482static void
2483coro_pop_on_leave (pTHX_ void *coro)
2484{
2485 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2486 on_enterleave_call (aTHX_ sv_2mortal (cb));
2487}
1742 2488
1743/*****************************************************************************/ 2489/*****************************************************************************/
1744/* PerlIO::cede */ 2490/* PerlIO::cede */
1745 2491
1746typedef struct 2492typedef struct
… …
1814 PerlIOBuf_get_cnt, 2560 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2561 PerlIOBuf_set_ptrcnt,
1816}; 2562};
1817 2563
1818/*****************************************************************************/ 2564/*****************************************************************************/
2565/* Coro::Semaphore & Coro::Signal */
1819 2566
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 * 2567static SV *
1831pp_restore (pTHX) 2568coro_waitarray_new (pTHX_ int count)
1832{ 2569{
1833 dSP; 2570 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2571 AV *av = newAV ();
2572 SV **ary;
1834 2573
1835 PUSHMARK (SP); 2574 /* unfortunately, building manually saves memory */
2575 Newx (ary, 2, SV *);
2576 AvALLOC (av) = ary;
2577#if PERL_VERSION_ATLEAST (5,10,0)
2578 AvARRAY (av) = ary;
2579#else
2580 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2581 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2582 SvPVX ((SV *)av) = (char *)ary;
2583#endif
2584 AvMAX (av) = 1;
2585 AvFILLp (av) = 0;
2586 ary [0] = newSViv (count);
1836 2587
1837 EXTEND (SP, 3); 2588 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} 2589}
1845 2590
1846static void 2591/* 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 2592
1852static void 2593static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2594coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2595{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2596 SV *count_sv = AvARRAY (av)[0];
2597 IV count = SvIVX (count_sv);
1856 2598
1857 frame->prepare = slf_prepare_set_stacklevel; 2599 count += adjust;
1858 frame->check = slf_check_nop; 2600 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2601
1862static void 2602 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2603 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (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 { 2604 {
1921 /* first iteration */ 2605 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 2606
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2607 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2608 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2609 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2610 cb = av_shift (av);
1931 2611
1932 /* pop args */ 2612 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2613 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2614 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2615 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2616 }
1942 2617 else if (SvTYPE (cb) == SVt_PVCV)
2618 {
2619 dSP;
2620 PUSHMARK (SP);
2621 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1943 PUTBACK; 2622 PUTBACK;
2623 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2624 }
1944 2625
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items); 2626 SvREFCNT_dec (cb);
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 { 2627 }
1954 struct coro_transfer_args ta; 2628}
1955 2629
1956 slf_frame.prepare (aTHX_ &ta); 2630static void
1957 TRANSFER (ta, 0); 2631coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2632{
2633 /* call $sem->adjust (0) to possibly wake up some other waiters */
2634 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2635}
1958 2636
1959 checkmark = PL_stack_sp - PL_stack_base; 2637static int
2638slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2639{
2640 AV *av = (AV *)frame->data;
2641 SV *count_sv = AvARRAY (av)[0];
2642
2643 /* if we are about to throw, don't actually acquire the lock, just throw */
2644 if (CORO_THROW)
2645 return 0;
2646 else if (SvIVX (count_sv) > 0)
1960 } 2647 {
1961 while (slf_frame.check (aTHX_ &slf_frame)); 2648 SvSTATE_current->on_destroy = 0;
1962 2649
2650 if (acquire)
2651 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2652 else
2653 coro_semaphore_adjust (aTHX_ av, 0);
2654
2655 return 0;
2656 }
2657 else
2658 {
2659 int i;
2660 /* if we were woken up but can't down, we look through the whole */
2661 /* waiters list and only add us if we aren't in there already */
2662 /* this avoids some degenerate memory usage cases */
2663
2664 for (i = 1; i <= AvFILLp (av); ++i)
2665 if (AvARRAY (av)[i] == SvRV (coro_current))
2666 return 1;
2667
2668 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2669 return 1;
2670 }
2671}
2672
2673static int
2674slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2675{
2676 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2677}
2678
2679static int
2680slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2681{
2682 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2683}
2684
2685static void
2686slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2687{
2688 AV *av = (AV *)SvRV (arg [0]);
2689
2690 if (SvIVX (AvARRAY (av)[0]) > 0)
2691 {
2692 frame->data = (void *)av;
2693 frame->prepare = prepare_nop;
2694 }
2695 else
2696 {
2697 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2698
2699 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2700 frame->prepare = prepare_schedule;
2701
2702 /* to avoid race conditions when a woken-up coro gets terminated */
2703 /* we arrange for a temporary on_destroy that calls adjust (0) */
2704 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2705 }
2706}
2707
2708static void
2709slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2710{
2711 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2712 frame->check = slf_check_semaphore_down;
2713}
2714
2715static void
2716slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2717{
2718 if (items >= 2)
2719 {
2720 /* callback form */
2721 AV *av = (AV *)SvRV (arg [0]);
2722 SV *cb_cv = s_get_cv_croak (arg [1]);
2723
2724 av_push (av, SvREFCNT_inc_NN (cb_cv));
2725
2726 if (SvIVX (AvARRAY (av)[0]) > 0)
2727 coro_semaphore_adjust (aTHX_ av, 0);
2728
2729 frame->prepare = prepare_nop;
2730 frame->check = slf_check_nop;
2731 }
2732 else
2733 {
2734 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2735 frame->check = slf_check_semaphore_wait;
2736 }
2737}
2738
2739/* signal */
2740
2741static void
2742coro_signal_wake (pTHX_ AV *av, int count)
2743{
2744 SvIVX (AvARRAY (av)[0]) = 0;
2745
2746 /* now signal count waiters */
2747 while (count > 0 && AvFILLp (av) > 0)
2748 {
2749 SV *cb;
2750
2751 /* swap first two elements so we can shift a waiter */
2752 cb = AvARRAY (av)[0];
2753 AvARRAY (av)[0] = AvARRAY (av)[1];
2754 AvARRAY (av)[1] = cb;
2755
2756 cb = av_shift (av);
2757
2758 if (SvTYPE (cb) == SVt_PVCV)
2759 {
2760 dSP;
2761 PUSHMARK (SP);
2762 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2763 PUTBACK;
2764 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2765 }
2766 else
2767 {
2768 api_ready (aTHX_ cb);
2769 sv_setiv (cb, 0); /* signal waiter */
2770 }
2771
2772 SvREFCNT_dec (cb);
2773
2774 --count;
2775 }
2776}
2777
2778static int
2779slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2780{
2781 /* if we are about to throw, also stop waiting */
2782 return SvROK ((SV *)frame->data) && !CORO_THROW;
2783}
2784
2785static void
2786slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2787{
2788 AV *av = (AV *)SvRV (arg [0]);
2789
2790 if (items >= 2)
2791 {
2792 SV *cb_cv = s_get_cv_croak (arg [1]);
2793 av_push (av, SvREFCNT_inc_NN (cb_cv));
2794
2795 if (SvIVX (AvARRAY (av)[0]))
2796 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2797
2798 frame->prepare = prepare_nop;
2799 frame->check = slf_check_nop;
2800 }
2801 else if (SvIVX (AvARRAY (av)[0]))
2802 {
2803 SvIVX (AvARRAY (av)[0]) = 0;
2804 frame->prepare = prepare_nop;
2805 frame->check = slf_check_nop;
2806 }
2807 else
2808 {
2809 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2810
2811 av_push (av, waiter);
2812
2813 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2814 frame->prepare = prepare_schedule;
2815 frame->check = slf_check_signal_wait;
2816 }
2817}
2818
2819/*****************************************************************************/
2820/* Coro::AIO */
2821
2822#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2823
2824/* helper storage struct */
2825struct io_state
2826{
2827 int errorno;
2828 I32 laststype; /* U16 in 5.10.0 */
2829 int laststatval;
2830 Stat_t statcache;
2831};
2832
2833static void
2834coro_aio_callback (pTHX_ CV *cv)
2835{
2836 dXSARGS;
2837 AV *state = (AV *)S_GENSUB_ARG;
2838 SV *coro = av_pop (state);
2839 SV *data_sv = newSV (sizeof (struct io_state));
2840
2841 av_extend (state, items - 1);
2842
2843 sv_upgrade (data_sv, SVt_PV);
2844 SvCUR_set (data_sv, sizeof (struct io_state));
2845 SvPOK_only (data_sv);
2846
2847 {
2848 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2849
2850 data->errorno = errno;
2851 data->laststype = PL_laststype;
2852 data->laststatval = PL_laststatval;
2853 data->statcache = PL_statcache;
2854 }
2855
2856 /* now build the result vector out of all the parameters and the data_sv */
2857 {
2858 int i;
2859
2860 for (i = 0; i < items; ++i)
2861 av_push (state, SvREFCNT_inc_NN (ST (i)));
2862 }
2863
2864 av_push (state, data_sv);
2865
2866 api_ready (aTHX_ coro);
2867 SvREFCNT_dec (coro);
2868 SvREFCNT_dec ((AV *)state);
2869}
2870
2871static int
2872slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2873{
2874 AV *state = (AV *)frame->data;
2875
2876 /* if we are about to throw, return early */
2877 /* this does not cancel the aio request, but at least */
2878 /* it quickly returns */
2879 if (CORO_THROW)
2880 return 0;
2881
2882 /* one element that is an RV? repeat! */
2883 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2884 return 1;
2885
2886 /* restore status */
2887 {
2888 SV *data_sv = av_pop (state);
2889 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2890
2891 errno = data->errorno;
2892 PL_laststype = data->laststype;
2893 PL_laststatval = data->laststatval;
2894 PL_statcache = data->statcache;
2895
2896 SvREFCNT_dec (data_sv);
2897 }
2898
2899 /* push result values */
1963 { 2900 {
1964 dSP; 2901 dSP;
1965 SV **bot = PL_stack_base + checkmark; 2902 int i;
1966 int gimme = GIMME_V;
1967 2903
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2904 EXTEND (SP, AvFILLp (state) + 1);
1969 2905 for (i = 0; i <= AvFILLp (state); ++i)
1970 /* make sure we put something on the stack in scalar context */ 2906 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1971 if (gimme == G_SCALAR)
1972 {
1973 if (sp == bot)
1974 XPUSHs (&PL_sv_undef);
1975
1976 SP = bot + 1;
1977 }
1978 2907
1979 PUTBACK; 2908 PUTBACK;
1980 } 2909 }
1981 2910
1982 return NORMAL; 2911 return 0;
1983} 2912}
1984 2913
1985static void 2914static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2915slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1987{ 2916{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2917 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2918 SV *coro_hv = SvRV (coro_current);
2919 struct coro *coro = SvSTATE_hv (coro_hv);
1989 2920
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] 2921 /* put our coroutine id on the state arg */
1991 && PL_op->op_ppaddr != pp_slf) 2922 av_push (state, SvREFCNT_inc_NN (coro_hv));
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or other means, caught");
1993 2923
1994 if (items > 3) 2924 /* first see whether we have a non-zero priority and set it as AIO prio */
1995 croak ("Coro only supports up to three arguments to SLF functions currently, caught"); 2925 if (coro->prio)
2926 {
2927 dSP;
1996 2928
1997 CvFLAGS (cv) |= CVf_SLF; 2929 static SV *prio_cv;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb; 2930 static SV *prio_sv;
1999 slf_cv = cv;
2000 2931
2001 /* we patch the op, and then re-run the whole call */ 2932 if (expect_false (!prio_cv))
2002 /* we have to put the same argument on the stack for this to work */ 2933 {
2003 /* and this will be done by pp_restore */ 2934 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004 slf_restore.op_next = (OP *)&slf_restore; 2935 prio_sv = newSViv (0);
2005 slf_restore.op_type = OP_NULL; 2936 }
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008 2937
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2938 PUSHMARK (SP);
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2939 sv_setiv (prio_sv, coro->prio);
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; 2940 XPUSHs (prio_sv);
2012 2941
2013 PL_op->op_ppaddr = pp_slf; 2942 PUTBACK;
2943 call_sv (prio_cv, G_VOID | G_DISCARD);
2944 }
2014 2945
2015 PL_op = (OP *)&slf_restore; 2946 /* now call the original request */
2947 {
2948 dSP;
2949 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2950 int i;
2951
2952 PUSHMARK (SP);
2953
2954 /* first push all args to the stack */
2955 EXTEND (SP, items + 1);
2956
2957 for (i = 0; i < items; ++i)
2958 PUSHs (arg [i]);
2959
2960 /* now push the callback closure */
2961 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2962
2963 /* now call the AIO function - we assume our request is uncancelable */
2964 PUTBACK;
2965 call_sv ((SV *)req, G_VOID | G_DISCARD);
2966 }
2967
2968 /* now that the requets is going, we loop toll we have a result */
2969 frame->data = (void *)state;
2970 frame->prepare = prepare_schedule;
2971 frame->check = slf_check_aio_req;
2972}
2973
2974static void
2975coro_aio_req_xs (pTHX_ CV *cv)
2976{
2977 dXSARGS;
2978
2979 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2980
2981 XSRETURN_EMPTY;
2982}
2983
2984/*****************************************************************************/
2985
2986#if CORO_CLONE
2987# include "clone.c"
2988#endif
2989
2990/*****************************************************************************/
2991
2992static SV *
2993coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2994{
2995 SV *coro_sv;
2996 struct coro *coro;
2997 MAGIC *mg;
2998 HV *hv;
2999 SV *cb;
3000 int i;
3001
3002 if (argc > 0)
3003 {
3004 cb = s_get_cv_croak (argv [0]);
3005
3006 if (!is_coro)
3007 {
3008 if (CvISXSUB (cb))
3009 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3010
3011 if (!CvROOT (cb))
3012 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3013 }
3014 }
3015
3016 Newz (0, coro, 1, struct coro);
3017 coro->args = newAV ();
3018 coro->flags = CF_NEW;
3019
3020 if (coro_first) coro_first->prev = coro;
3021 coro->next = coro_first;
3022 coro_first = coro;
3023
3024 coro->hv = hv = newHV ();
3025 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3026 mg->mg_flags |= MGf_DUP;
3027 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3028
3029 if (argc > 0)
3030 {
3031 av_extend (coro->args, argc + is_coro - 1);
3032
3033 if (is_coro)
3034 {
3035 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3036 cb = (SV *)cv_coro_run;
3037 }
3038
3039 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3040
3041 for (i = 1; i < argc; i++)
3042 av_push (coro->args, newSVsv (argv [i]));
3043 }
3044
3045 return coro_sv;
2016} 3046}
2017 3047
2018MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3048MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019 3049
2020PROTOTYPES: DISABLE 3050PROTOTYPES: DISABLE
2021 3051
2022BOOT: 3052BOOT:
2023{ 3053{
2024#ifdef USE_ITHREADS 3054#ifdef USE_ITHREADS
2025 MUTEX_INIT (&coro_lock);
2026# if CORO_PTHREAD 3055# if CORO_PTHREAD
2027 coro_thx = PERL_GET_CONTEXT; 3056 coro_thx = PERL_GET_CONTEXT;
2028# endif 3057# endif
2029#endif 3058#endif
2030 BOOT_PAGESIZE; 3059 BOOT_PAGESIZE;
2031 3060
3061 cctx_current = cctx_new_empty ();
3062
2032 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3063 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2033 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3064 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2034 3065
2035 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3066 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2036 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3067 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2050 main_mainstack = PL_mainstack; 3081 main_mainstack = PL_mainstack;
2051 main_top_env = PL_top_env; 3082 main_top_env = PL_top_env;
2052 3083
2053 while (main_top_env->je_prev) 3084 while (main_top_env->je_prev)
2054 main_top_env = main_top_env->je_prev; 3085 main_top_env = main_top_env->je_prev;
3086
3087 {
3088 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3089
3090 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3091 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3092
3093 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3094 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3095 }
2055 3096
2056 coroapi.ver = CORO_API_VERSION; 3097 coroapi.ver = CORO_API_VERSION;
2057 coroapi.rev = CORO_API_REVISION; 3098 coroapi.rev = CORO_API_REVISION;
2058 3099
2059 coroapi.transfer = api_transfer; 3100 coroapi.transfer = api_transfer;
… …
2070 3111
2071 if (!svp) croak ("Time::HiRes is required"); 3112 if (!svp) croak ("Time::HiRes is required");
2072 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3113 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2073 3114
2074 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3115 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3116
3117 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3118 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2075 } 3119 }
2076 3120
2077 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3121 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2078} 3122}
2079 3123
2080SV * 3124SV *
2081new (char *klass, ...) 3125new (SV *klass, ...)
3126 ALIAS:
3127 Coro::new = 1
2082 CODE: 3128 CODE:
2083{ 3129 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2084 struct coro *coro; 3130 OUTPUT:
2085 MAGIC *mg;
2086 HV *hv;
2087 int i;
2088
2089 Newz (0, coro, 1, struct coro);
2090 coro->args = newAV ();
2091 coro->flags = CF_NEW;
2092
2093 if (coro_first) coro_first->prev = coro;
2094 coro->next = coro_first;
2095 coro_first = coro;
2096
2097 coro->hv = hv = newHV ();
2098 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2099 mg->mg_flags |= MGf_DUP;
2100 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2101
2102 av_extend (coro->args, items - 1);
2103 for (i = 1; i < items; i++)
2104 av_push (coro->args, newSVsv (ST (i)));
2105}
2106 OUTPUT:
2107 RETVAL 3131 RETVAL
2108
2109void
2110_set_stacklevel (...)
2111 CODE:
2112 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2113 3132
2114void 3133void
2115transfer (...) 3134transfer (...)
3135 PROTOTYPE: $$
2116 CODE: 3136 CODE:
2117 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3137 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2118 3138
2119bool 3139bool
2120_destroy (SV *coro_sv) 3140_destroy (SV *coro_sv)
2121 CODE: 3141 CODE:
2122 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3142 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2127_exit (int code) 3147_exit (int code)
2128 PROTOTYPE: $ 3148 PROTOTYPE: $
2129 CODE: 3149 CODE:
2130 _exit (code); 3150 _exit (code);
2131 3151
3152SV *
3153clone (Coro::State coro)
3154 CODE:
3155{
3156#if CORO_CLONE
3157 struct coro *ncoro = coro_clone (aTHX_ coro);
3158 MAGIC *mg;
3159 /* TODO: too much duplication */
3160 ncoro->hv = newHV ();
3161 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3162 mg->mg_flags |= MGf_DUP;
3163 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3164#else
3165 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3166#endif
3167}
3168 OUTPUT:
3169 RETVAL
3170
2132int 3171int
2133cctx_stacksize (int new_stacksize = 0) 3172cctx_stacksize (int new_stacksize = 0)
3173 PROTOTYPE: ;$
2134 CODE: 3174 CODE:
2135 RETVAL = cctx_stacksize; 3175 RETVAL = cctx_stacksize;
2136 if (new_stacksize) 3176 if (new_stacksize)
2137 { 3177 {
2138 cctx_stacksize = new_stacksize; 3178 cctx_stacksize = new_stacksize;
… …
2141 OUTPUT: 3181 OUTPUT:
2142 RETVAL 3182 RETVAL
2143 3183
2144int 3184int
2145cctx_max_idle (int max_idle = 0) 3185cctx_max_idle (int max_idle = 0)
3186 PROTOTYPE: ;$
2146 CODE: 3187 CODE:
2147 RETVAL = cctx_max_idle; 3188 RETVAL = cctx_max_idle;
2148 if (max_idle > 1) 3189 if (max_idle > 1)
2149 cctx_max_idle = max_idle; 3190 cctx_max_idle = max_idle;
2150 OUTPUT: 3191 OUTPUT:
2151 RETVAL 3192 RETVAL
2152 3193
2153int 3194int
2154cctx_count () 3195cctx_count ()
3196 PROTOTYPE:
2155 CODE: 3197 CODE:
2156 RETVAL = cctx_count; 3198 RETVAL = cctx_count;
2157 OUTPUT: 3199 OUTPUT:
2158 RETVAL 3200 RETVAL
2159 3201
2160int 3202int
2161cctx_idle () 3203cctx_idle ()
3204 PROTOTYPE:
2162 CODE: 3205 CODE:
2163 RETVAL = cctx_idle; 3206 RETVAL = cctx_idle;
2164 OUTPUT: 3207 OUTPUT:
2165 RETVAL 3208 RETVAL
2166 3209
2167void 3210void
2168list () 3211list ()
3212 PROTOTYPE:
2169 PPCODE: 3213 PPCODE:
2170{ 3214{
2171 struct coro *coro; 3215 struct coro *coro;
2172 for (coro = coro_first; coro; coro = coro->next) 3216 for (coro = coro_first; coro; coro = coro->next)
2173 if (coro->hv) 3217 if (coro->hv)
… …
2180 eval = 1 3224 eval = 1
2181 CODE: 3225 CODE:
2182{ 3226{
2183 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3227 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2184 { 3228 {
2185 struct coro temp; 3229 struct coro *current = SvSTATE_current;
2186 3230
2187 if (!(coro->flags & CF_RUNNING)) 3231 if (current != coro)
2188 { 3232 {
2189 PUTBACK; 3233 PUTBACK;
2190 save_perl (aTHX_ &temp); 3234 save_perl (aTHX_ current);
2191 load_perl (aTHX_ coro); 3235 load_perl (aTHX_ coro);
3236 SPAGAIN;
2192 } 3237 }
2193 3238
2194 {
2195 dSP;
2196 ENTER;
2197 SAVETMPS;
2198 PUTBACK;
2199 PUSHSTACK; 3239 PUSHSTACK;
3240
2200 PUSHMARK (SP); 3241 PUSHMARK (SP);
3242 PUTBACK;
2201 3243
2202 if (ix) 3244 if (ix)
2203 eval_sv (coderef, 0); 3245 eval_sv (coderef, 0);
2204 else 3246 else
2205 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3247 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2206 3248
2207 POPSTACK; 3249 POPSTACK;
2208 SPAGAIN; 3250 SPAGAIN;
2209 FREETMPS;
2210 LEAVE;
2211 PUTBACK;
2212 }
2213 3251
2214 if (!(coro->flags & CF_RUNNING)) 3252 if (current != coro)
2215 { 3253 {
3254 PUTBACK;
2216 save_perl (aTHX_ coro); 3255 save_perl (aTHX_ coro);
2217 load_perl (aTHX_ &temp); 3256 load_perl (aTHX_ current);
2218 SPAGAIN; 3257 SPAGAIN;
2219 } 3258 }
2220 } 3259 }
2221} 3260}
2222 3261
… …
2226 ALIAS: 3265 ALIAS:
2227 is_ready = CF_READY 3266 is_ready = CF_READY
2228 is_running = CF_RUNNING 3267 is_running = CF_RUNNING
2229 is_new = CF_NEW 3268 is_new = CF_NEW
2230 is_destroyed = CF_DESTROYED 3269 is_destroyed = CF_DESTROYED
3270 is_suspended = CF_SUSPENDED
2231 CODE: 3271 CODE:
2232 RETVAL = boolSV (coro->flags & ix); 3272 RETVAL = boolSV (coro->flags & ix);
2233 OUTPUT: 3273 OUTPUT:
2234 RETVAL 3274 RETVAL
2235 3275
2236void 3276void
2237throw (Coro::State self, SV *throw = &PL_sv_undef) 3277throw (Coro::State self, SV *throw = &PL_sv_undef)
2238 PROTOTYPE: $;$ 3278 PROTOTYPE: $;$
2239 CODE: 3279 CODE:
3280{
3281 struct coro *current = SvSTATE_current;
3282 SV **throwp = self == current ? &CORO_THROW : &self->except;
2240 SvREFCNT_dec (self->throw); 3283 SvREFCNT_dec (*throwp);
3284 SvGETMAGIC (throw);
2241 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3285 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3286}
2242 3287
2243void 3288void
2244api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3289api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3290 PROTOTYPE: $;$
2245 C_ARGS: aTHX_ coro, flags 3291 C_ARGS: aTHX_ coro, flags
2246 3292
2247SV * 3293SV *
2248has_cctx (Coro::State coro) 3294has_cctx (Coro::State coro)
2249 PROTOTYPE: $ 3295 PROTOTYPE: $
2250 CODE: 3296 CODE:
2251 RETVAL = boolSV (!!coro->cctx); 3297 /* maybe manage the running flag differently */
3298 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2252 OUTPUT: 3299 OUTPUT:
2253 RETVAL 3300 RETVAL
2254 3301
2255int 3302int
2256is_traced (Coro::State coro) 3303is_traced (Coro::State coro)
… …
2274 OUTPUT: 3321 OUTPUT:
2275 RETVAL 3322 RETVAL
2276 3323
2277void 3324void
2278force_cctx () 3325force_cctx ()
3326 PROTOTYPE:
2279 CODE: 3327 CODE:
2280 struct coro *coro = SvSTATE (coro_current);
2281 coro->cctx->idle_sp = 0; 3328 cctx_current->idle_sp = 0;
2282 3329
2283void 3330void
2284swap_defsv (Coro::State self) 3331swap_defsv (Coro::State self)
2285 PROTOTYPE: $ 3332 PROTOTYPE: $
2286 ALIAS: 3333 ALIAS:
… …
2294 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3341 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2295 3342
2296 SV *tmp = *src; *src = *dst; *dst = tmp; 3343 SV *tmp = *src; *src = *dst; *dst = tmp;
2297 } 3344 }
2298 3345
3346void
3347cancel (Coro::State self)
3348 CODE:
3349 coro_state_destroy (aTHX_ self);
3350 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3351
3352
3353SV *
3354enable_times (int enabled = enable_times)
3355 CODE:
3356{
3357 RETVAL = boolSV (enable_times);
3358
3359 if (enabled != enable_times)
3360 {
3361 enable_times = enabled;
3362
3363 coro_times_update ();
3364 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3365 }
3366}
3367 OUTPUT:
3368 RETVAL
3369
3370void
3371times (Coro::State self)
3372 PPCODE:
3373{
3374 struct coro *current = SvSTATE (coro_current);
3375
3376 if (expect_false (current == self))
3377 {
3378 coro_times_update ();
3379 coro_times_add (SvSTATE (coro_current));
3380 }
3381
3382 EXTEND (SP, 2);
3383 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3384 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3385
3386 if (expect_false (current == self))
3387 coro_times_sub (SvSTATE (coro_current));
3388}
3389
3390void
3391swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3392 CODE:
3393{
3394 struct coro *current = SvSTATE_current;
3395
3396 if (current == coro)
3397 SWAP_SVS (current);
3398
3399 if (!coro->swap_sv)
3400 coro->swap_sv = newAV ();
3401
3402 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3403 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3404
3405 if (current == coro)
3406 SWAP_SVS (current);
3407}
3408
3409
2299MODULE = Coro::State PACKAGE = Coro 3410MODULE = Coro::State PACKAGE = Coro
2300 3411
2301BOOT: 3412BOOT:
2302{ 3413{
2303 int i;
2304
2305 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2306 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2307 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2308 3416 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3417 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2309 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3418 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2310 SvREADONLY_on (coro_current); 3419 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3420 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3421 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3422 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2311 3423
3424 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3425 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3426 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3427 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3428
2312 coro_stash = gv_stashpv ("Coro", TRUE); 3429 coro_stash = gv_stashpv ("Coro", TRUE);
2313 3430
2314 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3431 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2315 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3432 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2316 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3433 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2317 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3434 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2318 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3435 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2319 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3436 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2320
2321 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2322 coro_ready[i] = newAV ();
2323 3437
2324 { 3438 {
2325 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3439 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2326 3440
2327 coroapi.schedule = api_schedule; 3441 coroapi.schedule = api_schedule;
3442 coroapi.schedule_to = api_schedule_to;
2328 coroapi.cede = api_cede; 3443 coroapi.cede = api_cede;
2329 coroapi.cede_notself = api_cede_notself; 3444 coroapi.cede_notself = api_cede_notself;
2330 coroapi.ready = api_ready; 3445 coroapi.ready = api_ready;
2331 coroapi.is_ready = api_is_ready; 3446 coroapi.is_ready = api_is_ready;
2332 coroapi.nready = coro_nready; 3447 coroapi.nready = coro_nready;
2333 coroapi.current = coro_current; 3448 coroapi.current = coro_current;
2334 3449
2335 GCoroAPI = &coroapi; 3450 /*GCoroAPI = &coroapi;*/
2336 sv_setiv (sv, (IV)&coroapi); 3451 sv_setiv (sv, (IV)&coroapi);
2337 SvREADONLY_on (sv); 3452 SvREADONLY_on (sv);
2338 } 3453 }
2339} 3454}
2340 3455
3456SV *
3457async (...)
3458 PROTOTYPE: &@
3459 CODE:
3460 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3461 api_ready (aTHX_ RETVAL);
3462 OUTPUT:
3463 RETVAL
3464
3465void
3466terminate (...)
3467 CODE:
3468 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3469
2341void 3470void
2342schedule (...) 3471schedule (...)
2343 CODE: 3472 CODE:
2344 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 3473 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3474
3475void
3476schedule_to (...)
3477 CODE:
3478 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3479
3480void
3481cede_to (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2345 3484
2346void 3485void
2347cede (...) 3486cede (...)
2348 CODE: 3487 CODE:
2349 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3488 CORO_EXECUTE_SLF_XS (slf_init_cede);
2350 3489
2351void 3490void
2352cede_notself (...) 3491cede_notself (...)
2353 CODE: 3492 CODE:
2354 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 3493 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2355 3494
2356void 3495void
2357_set_current (SV *current) 3496_set_current (SV *current)
2358 PROTOTYPE: $ 3497 PROTOTYPE: $
2359 CODE: 3498 CODE:
… …
2362 3501
2363void 3502void
2364_set_readyhook (SV *hook) 3503_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3504 PROTOTYPE: $
2366 CODE: 3505 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3506 SvREFCNT_dec (coro_readyhook);
3507 SvGETMAGIC (hook);
3508 if (SvOK (hook))
3509 {
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3510 coro_readyhook = newSVsv (hook);
2370 UNLOCK; 3511 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3512 }
3513 else
3514 {
3515 coro_readyhook = 0;
3516 CORO_READYHOOK = 0;
3517 }
2371 3518
2372int 3519int
2373prio (Coro::State coro, int newprio = 0) 3520prio (Coro::State coro, int newprio = 0)
3521 PROTOTYPE: $;$
2374 ALIAS: 3522 ALIAS:
2375 nice = 1 3523 nice = 1
2376 CODE: 3524 CODE:
2377{ 3525{
2378 RETVAL = coro->prio; 3526 RETVAL = coro->prio;
… …
2380 if (items > 1) 3528 if (items > 1)
2381 { 3529 {
2382 if (ix) 3530 if (ix)
2383 newprio = coro->prio - newprio; 3531 newprio = coro->prio - newprio;
2384 3532
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3533 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3534 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3535
2388 coro->prio = newprio; 3536 coro->prio = newprio;
2389 } 3537 }
2390} 3538}
2391 OUTPUT: 3539 OUTPUT:
… …
2405 CODE: 3553 CODE:
2406 RETVAL = coro_nready; 3554 RETVAL = coro_nready;
2407 OUTPUT: 3555 OUTPUT:
2408 RETVAL 3556 RETVAL
2409 3557
2410# for async_pool speedup
2411void 3558void
2412_pool_1 (SV *cb) 3559suspend (Coro::State self)
3560 PROTOTYPE: $
2413 CODE: 3561 CODE:
2414{ 3562 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3563
2422 if (!invoke) 3564void
3565resume (Coro::State self)
3566 PROTOTYPE: $
3567 CODE:
3568 self->flags &= ~CF_SUSPENDED;
3569
3570void
3571_pool_handler (...)
3572 CODE:
3573 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3574
3575void
3576async_pool (SV *cv, ...)
3577 PROTOTYPE: &@
3578 PPCODE:
3579{
3580 HV *hv = (HV *)av_pop (av_async_pool);
3581 AV *av = newAV ();
3582 SV *cb = ST (0);
3583 int i;
3584
3585 av_extend (av, items - 2);
3586 for (i = 1; i < items; ++i)
3587 av_push (av, SvREFCNT_inc_NN (ST (i)));
3588
3589 if ((SV *)hv == &PL_sv_undef)
2423 { 3590 {
2424 SV *old = PL_diehook; 3591 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2425 PL_diehook = 0; 3592 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2426 SvREFCNT_dec (old); 3593 SvREFCNT_dec (sv);
2427 croak ("\3async_pool terminate\2\n");
2428 } 3594 }
2429 3595
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3596 {
2443 av_fill (defav, len - 1); 3597 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3598
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3599 assert (!coro->invoke_cb);
3600 assert (!coro->invoke_av);
3601 coro->invoke_cb = SvREFCNT_inc (cb);
3602 coro->invoke_av = av;
2446 } 3603 }
2447 3604
3605 api_ready (aTHX_ (SV *)hv);
3606
3607 if (GIMME_V != G_VOID)
3608 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3609 else
2448 SvREFCNT_dec (invoke); 3610 SvREFCNT_dec (hv);
2449} 3611}
2450 3612
2451void 3613SV *
2452_pool_2 (SV *cb) 3614rouse_cb ()
3615 PROTOTYPE:
2453 CODE: 3616 CODE:
2454{ 3617 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3618 OUTPUT:
2527 RETVAL 3619 RETVAL
2528 3620
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3621void
2535_get_state (SV *self) 3622rouse_wait (...)
3623 PROTOTYPE: ;$
2536 PPCODE: 3624 PPCODE:
2537{ 3625 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3626
2563void 3627void
2564_set_state (SV *state) 3628on_enter (SV *block)
3629 ALIAS:
3630 on_leave = 1
2565 PROTOTYPE: $ 3631 PROTOTYPE: &
3632 CODE:
3633{
3634 struct coro *coro = SvSTATE_current;
3635 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3636
3637 block = s_get_cv_croak (block);
3638
3639 if (!*avp)
3640 *avp = newAV ();
3641
3642 av_push (*avp, SvREFCNT_inc (block));
3643
3644 if (!ix)
3645 on_enterleave_call (aTHX_ block);
3646
3647 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3648 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3649 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3650}
3651
3652
3653MODULE = Coro::State PACKAGE = PerlIO::cede
3654
3655BOOT:
3656 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3657
3658
3659MODULE = Coro::State PACKAGE = Coro::Semaphore
3660
3661SV *
3662new (SV *klass, SV *count = 0)
3663 CODE:
3664{
3665 int semcnt = 1;
3666
3667 if (count)
3668 {
3669 SvGETMAGIC (count);
3670
3671 if (SvOK (count))
3672 semcnt = SvIV (count);
3673 }
3674
3675 RETVAL = sv_bless (
3676 coro_waitarray_new (aTHX_ semcnt),
3677 GvSTASH (CvGV (cv))
3678 );
3679}
3680 OUTPUT:
3681 RETVAL
3682
3683# helper for Coro::Channel and others
3684SV *
3685_alloc (int count)
3686 CODE:
3687 RETVAL = coro_waitarray_new (aTHX_ count);
3688 OUTPUT:
3689 RETVAL
3690
3691SV *
3692count (SV *self)
3693 CODE:
3694 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3695 OUTPUT:
3696 RETVAL
3697
3698void
3699up (SV *self, int adjust = 1)
3700 ALIAS:
3701 adjust = 1
3702 CODE:
3703 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3704
3705void
3706down (...)
3707 CODE:
3708 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3709
3710void
3711wait (...)
3712 CODE:
3713 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3714
3715void
3716try (SV *self)
3717 PPCODE:
3718{
3719 AV *av = (AV *)SvRV (self);
3720 SV *count_sv = AvARRAY (av)[0];
3721 IV count = SvIVX (count_sv);
3722
3723 if (count > 0)
3724 {
3725 --count;
3726 SvIVX (count_sv) = count;
3727 XSRETURN_YES;
3728 }
3729 else
3730 XSRETURN_NO;
3731}
3732
3733void
3734waiters (SV *self)
3735 PPCODE:
3736{
3737 AV *av = (AV *)SvRV (self);
3738 int wcount = AvFILLp (av) + 1 - 1;
3739
3740 if (GIMME_V == G_SCALAR)
3741 XPUSHs (sv_2mortal (newSViv (wcount)));
3742 else
3743 {
3744 int i;
3745 EXTEND (SP, wcount);
3746 for (i = 1; i <= wcount; ++i)
3747 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3748 }
3749}
3750
3751MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3752
3753void
3754_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 3755 PPCODE:
2567{ 3756{
2568 AV *av = (AV *)SvRV (state); 3757 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 3758
2572 errno = data->errorno; 3759 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 3760 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 3761 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 3762 XSRETURN_YES;
2576 3763
3764 XSRETURN_NO;
3765}
3766
3767MODULE = Coro::State PACKAGE = Coro::Signal
3768
3769SV *
3770new (SV *klass)
3771 CODE:
3772 RETVAL = sv_bless (
3773 coro_waitarray_new (aTHX_ 0),
3774 GvSTASH (CvGV (cv))
3775 );
3776 OUTPUT:
3777 RETVAL
3778
3779void
3780wait (...)
3781 CODE:
3782 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3783
3784void
3785broadcast (SV *self)
3786 CODE:
3787{
3788 AV *av = (AV *)SvRV (self);
3789 coro_signal_wake (aTHX_ av, AvFILLp (av));
3790}
3791
3792void
3793send (SV *self)
3794 CODE:
3795{
3796 AV *av = (AV *)SvRV (self);
3797
2577 EXTEND (SP, AvFILLp (av)); 3798 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3799 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3800 else
3801 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3802}
3803
3804IV
3805awaited (SV *self)
3806 CODE:
3807 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3808 OUTPUT:
3809 RETVAL
2581 3810
2582 3811
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3812MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3813
2585BOOT: 3814BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3815 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3816
2588SV * 3817void
2589_schedule (...) 3818_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3819 CODE:
2592{ 3820{
2593 static int incede; 3821 static int incede;
2594 3822
2595 api_cede_notself (aTHX); 3823 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3829 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3830 if (coro_nready >= incede)
2603 { 3831 {
2604 PUSHMARK (SP); 3832 PUSHMARK (SP);
2605 PUTBACK; 3833 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3834 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3835 }
2609 3836
2610 --incede; 3837 --incede;
2611} 3838}
2612 3839
2613 3840
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3841MODULE = Coro::State PACKAGE = Coro::AIO
2615 3842
2616BOOT: 3843void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3844_register (char *target, char *proto, SV *req)
3845 CODE:
3846{
3847 SV *req_cv = s_get_cv_croak (req);
3848 /* newXSproto doesn't return the CV on 5.8 */
3849 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3850 sv_setpv ((SV *)slf_cv, proto);
3851 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3852}
2618 3853
3854MODULE = Coro::State PACKAGE = Coro::Select
3855
3856void
3857patch_pp_sselect ()
3858 CODE:
3859 if (!coro_old_pp_sselect)
3860 {
3861 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3862 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3863 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3864 }
3865
3866void
3867unpatch_pp_sselect ()
3868 CODE:
3869 if (coro_old_pp_sselect)
3870 {
3871 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3872 coro_old_pp_sselect = 0;
3873 }
3874
3875

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