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Comparing Coro/Coro/State.xs (file contents):
Revision 1.276 by root, Sat Nov 15 07:49:48 2008 UTC vs.
Revision 1.364 by root, Thu Jul 16 02:19:17 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
51#endif 51#endif
52 52
53/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
55 55
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 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
108#endif 58#endif
109 59
110#ifndef CORO_STACKGUARD 60#ifndef CORO_STACKGUARD
… …
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128 80
129#if __GNUC__ >= 3 81#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 84# define INLINE static inline
133#else 85#else
134# define attribute(x) 86# define attribute(x)
135# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
136# define INLINE static 88# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
141 93
142#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
143 95
144#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
145 98
146#ifdef USE_ITHREADS 99#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 100# if CORO_PTHREAD
152static void *coro_thx; 101static void *coro_thx;
153# endif 102# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 103#endif
161 104
162# undef LOCK 105#ifdef __linux
163# define LOCK (void)0 106# include <time.h> /* for timespec */
164# undef UNLOCK 107# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 108# ifdef SYS_clock_gettime
166 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 110# define CORO_CLOCK_MONOTONIC 1
168struct io_state 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 112# endif
170 AV *res; 113#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 114
177static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
178 121
179static U32 cctx_gen; 122static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 126static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
187 133
188static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 136static SV *rv_diehook;
191static SV *rv_warnhook; 137static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
193 139
194/* async_pool helper stuff */ 140/* async_pool helper stuff */
195static SV *sv_pool_rss; 141static SV *sv_pool_rss;
196static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
198 148
199/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
200static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
201 157
202static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
204 160
205enum { 161enum {
… …
231 int valgrind_id; 187 int valgrind_id;
232#endif 188#endif
233 unsigned char flags; 189 unsigned char flags;
234} coro_cctx; 190} coro_cctx;
235 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
236enum { 196enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 202};
242 203
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 205typedef struct
245{ 206{
246 SV *defsv; 207 SV *defsv;
247 AV *defav; 208 AV *defav;
248 SV *errsv; 209 SV *errsv;
249 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
250#define VAR(name,type) type name; 212#define VAR(name,type) type name;
251# include "state.h" 213# include "state.h"
252#undef VAR 214#undef VAR
253} perl_slots; 215} perl_slots;
254 216
… …
257/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
258struct coro { 220struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 222 coro_cctx *cctx;
261 223
262 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 228 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 229 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
266 231
232 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
271 238
272 /* statistics */ 239 /* statistics */
273 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
274 241
275 /* coro process data */ 242 /* coro process data */
276 int prio; 243 int prio;
277 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
278 246
279 /* async_pool */ 247 /* async_pool */
280 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
281 258
282 /* linked list */ 259 /* linked list */
283 struct coro *next, *prev; 260 struct coro *next, *prev;
284}; 261};
285 262
286typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
288 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 269static struct CoroSLF slf_frame; /* the current slf frame */
290 270
291/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
292 272
293#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
299 279
300/* for Coro.pm */ 280/* for Coro.pm */
301static SV *coro_current; 281static SV *coro_current;
302static SV *coro_readyhook; 282static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 285static struct coro *coro_first;
305#define coro_nready coroapi.nready 286#define coro_nready coroapi.nready
287
288/** Coro::Select ************************************************************/
289
290static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select;
292
293/* horrible hack, but if it works... */
294static OP *
295coro_pp_sselect (aTHX)
296{
297 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select);
300 PUTBACK;
301
302 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
303 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX);
306}
306 307
307/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
308 309
309static SV * 310static SV *
310coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 335 get_hv (name, create);
335#endif 336#endif
336 return get_hv (name, create); 337 return get_hv (name, create);
337} 338}
338 339
340INLINE void
341coro_times_update ()
342{
343#ifdef coro_clock_gettime
344 struct timespec ts;
345
346 ts.tv_sec = ts.tv_nsec = 0;
347 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
348 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
349
350 ts.tv_sec = ts.tv_nsec = 0;
351 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
352 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
353#else
354 dTHX;
355 UV tv[2];
356
357 u2time (aTHX_ tv);
358 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000;
360#endif
361}
362
363INLINE void
364coro_times_add (struct coro *c)
365{
366 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0];
369
370 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0];
373}
374
375INLINE void
376coro_times_sub (struct coro *c)
377{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0];
381
382 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
383 c->t_cpu [1] -= time_cpu [1];
384 c->t_cpu [0] -= time_cpu [0];
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
339static AV * 439static AV *
340coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
341{ 441{
342 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
344 444
345 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 451#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 453 --AvFILLp (padlist);
354 454
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
357 457
358 return newpadlist; 458 return newpadlist;
359} 459}
360 460
361static void 461static void
362free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
363{ 463{
364 /* may be during global destruction */ 464 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
366 { 466 {
367 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
368 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
369 { 470 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
371 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 473 I32 j = AvFILLp (av);
373 SV *sv; 474
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 480 }
380 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
382 } 486 }
383} 487}
384 488
385static int 489static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 491{
388 AV *padlist; 492 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return 0;
390 498
391 /* casting is fun. */ 499 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
394 502
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 504
397 return 0; 505 return 0;
398} 506}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 507
403static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 509 0, 0, 0, 0,
405 coro_cv_free 510 coro_cv_free
406}; 511};
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))
443 512
444/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
445static void 514static void
446get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
447{ 516{
… …
453 else 522 else
454 { 523 {
455#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
462#else 531#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 533#endif
465 } 534 }
466} 535}
467 536
468static void 537static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 545
477 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
478 547
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
481 550
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 552}
484 553
485/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
486 558
487static void 559static void
488load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
489{ 561{
490 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
491 c->slot = 0; 563 c->slot = 0;
492 564
493 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
494 566
495 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
499 572
500 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 574 # include "state.h"
502 #undef VAR 575 #undef VAR
503 576
… …
515 } 588 }
516 589
517 PUTBACK; 590 PUTBACK;
518 } 591 }
519 592
520 slf_frame = c->slf_frame; 593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (enable_times))
597 {
598 if (expect_false (!times_valid))
599 coro_times_update ();
600
601 coro_times_sub (c);
602 }
603
604 if (expect_false (c->on_enter))
605 {
606 int i;
607
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 }
521} 611}
522 612
523static void 613static void
524save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
525{ 615{
616 if (expect_false (c->on_leave))
617 {
618 int i;
619
620 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 }
623
624 times_valid = 0;
625
626 if (expect_false (enable_times))
627 {
628 coro_times_update (); times_valid = 1;
629 coro_times_add (c);
630 }
631
632 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 633 c->slf_frame = slf_frame;
527 634
528 { 635 {
529 dSP; 636 dSP;
530 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
… …
542 { 649 {
543 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
544 { 651 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
546 653
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 655 {
549 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
550 657
551 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
552 { 659 {
… …
576 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
577 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
580 { 687 {
581 int i; 688 unsigned int i;
582 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
583 CXINC; 690 CXINC;
584 } 691 }
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
586 693
587 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
588 695
589 { 696 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 698
592 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
596 704
597 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 706 # include "state.h"
599 #undef VAR 707 #undef VAR
600 } 708 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
608 */ 716 */
609#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
611#else 719#else
612static void 720static void
613coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
614{ 722{
615 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 787 Safefree (PL_retstack);
680#endif 788#endif
681} 789}
682 790
791#define CORO_RSS \
792 rss += sizeof (SYM (curstackinfo)); \
793 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
794 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
795 rss += SYM (tmps_max) * sizeof (SV *); \
796 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
797 rss += SYM (scopestack_max) * sizeof (I32); \
798 rss += SYM (savestack_max) * sizeof (ANY);
799
683static size_t 800static size_t
684coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
685{ 802{
686 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
687 804
688 if (coro->mainstack) 805 if (coro->mainstack)
689 { 806 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
694 { 808 {
695 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
696 810 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 811 #undef SYM
700 } 812 }
701 else 813 else
702 slot = coro->slot;
703
704 if (slot)
705 { 814 {
706 rss += sizeof (slot->curstackinfo); 815 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 816 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 817 #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 } 818 }
718 } 819 }
719 820
720 return rss; 821 return rss;
721} 822}
… …
734#endif 835#endif
735 836
736/* 837/*
737 * This overrides the default magic get method of %SIG elements. 838 * 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 839 * 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 840 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 841 * 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 */ 842 */
745static int 843static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 845{
748 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 900
803 if (svp) 901 if (svp)
804 { 902 {
805 SV *old = *svp; 903 SV *old = *svp;
806 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
808 return 0; 906 return 0;
809 } 907 }
810 } 908 }
811 909
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 911}
814 912
815static void 913static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 914prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 915{
818 /* kind of mega-hacky, but works */ 916 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 917 ta->next = ta->prev = (struct coro *)ta;
820} 918}
821 919
822static int 920static int
823slf_check_nop (aTHX) 921slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 922{
825 return 0; 923 return 0;
826} 924}
827 925
828static void 926static int
927slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{
929 return 1;
930}
931
932static UNOP coro_setup_op;
933
934static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
830{ 936{
831 /* 937 /*
832 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
833 */ 939 */
… …
835 941
836 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 949 PL_curpm = 0;
841 PL_curpad = 0; 950 PL_curpad = 0;
842 PL_localizing = 0; 951 PL_localizing = 0;
843 PL_dirty = 0; 952 PL_dirty = 0;
844 PL_restartop = 0; 953 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 955 PL_parser = 0;
847#endif 956#endif
957 PL_hints = 0;
848 958
849 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 960 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); 961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 962
853 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 970
860 { 971 {
861 dSP; 972 dSP;
862 UNOP myop; 973 UNOP myop;
863 974
864 Zero (&myop, 1, UNOP); 975 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
867 979
868 PUSHMARK (SP); 980 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 982 PUTBACK;
871 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 985 }
875 986
876 /* this newly created coroutine might be run on an existing cctx which most 987 /* 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. 988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 989 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 990 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 */ 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 992
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */
998
999 PL_op = (OP *)&coro_setup_op;
1000
1001 /* copy throw, in case it was set before coro_setup */
1002 CORO_THROW = coro->except;
1003
1004 if (expect_false (enable_times))
1005 {
1006 coro_times_update ();
1007 coro_times_sub (coro);
1008 }
1009}
1010
883static void 1011static void
884coro_destruct (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
885{ 1013{
886 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
887 { 1015 {
888 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
898 1026
899 /* unwind main stack */ 1027 /* unwind main stack */
900 dounwind (-1); 1028 dounwind (-1);
901 } 1029 }
1030}
902 1031
903 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
906 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1036
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1037 {
1038 struct coro *current = SvSTATE_current;
1039
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041
1042 save_perl (aTHX_ current);
1043 load_perl (aTHX_ coro);
1044
1045 coro_unwind_stacks (aTHX);
1046 coro_destruct_stacks (aTHX);
1047
1048 // now save some sv's to be free'd later
1049 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs;
1054 svf [5] = GvSV (irsgv);
1055 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf));
1059
1060 load_perl (aTHX_ current);
1061 }
1062
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1067 SvREFCNT_dec (svf [i]);
1068
913 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
915 1071 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
917} 1074}
918 1075
919INLINE void 1076INLINE void
920free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
921{ 1078{
… …
929static int 1086static int
930runops_trace (pTHX) 1087runops_trace (pTHX)
931{ 1088{
932 COP *oldcop = 0; 1089 COP *oldcop = 0;
933 int oldcxix = -2; 1090 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1091
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1093 {
939 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
940 1095
941 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1097 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1098 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1099 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1101 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
948 SV **cb; 1103 SV **cb;
… …
985 1140
986 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
987 { 1142 {
988 SV **cb; 1143 SV **cb;
989 1144
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1146 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1148
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1150 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1151 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
1000 1154
1001 if (isGV (gv)) 1155 if (isGV (gv))
… …
1006 SAVETMPS; 1160 SAVETMPS;
1007 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1162 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1164 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1165 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1166 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1167 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); 1168 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1169 SPAGAIN;
1016 FREETMPS; 1170 FREETMPS;
… …
1019 } 1173 }
1020 1174
1021 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
1022 } 1176 }
1023 1177
1024 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1179 {
1026 dSP; 1180 dSP;
1027 1181
1028 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1183 ENTER;
… …
1048 1202
1049 TAINT_NOT; 1203 TAINT_NOT;
1050 return 0; 1204 return 0;
1051} 1205}
1052 1206
1207static struct CoroSLF cctx_ssl_frame;
1208
1053static void 1209static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1211{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1212 ta->prev = 0;
1058} 1213}
1059 1214
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1215static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1217{
1063/* also initialises PL_top_env */ 1218 *frame = cctx_ssl_frame;
1219
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221}
1222
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1224static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1066{ 1226{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1071 1228
1072 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1074 1231
1075 Zero (&myop, 1, UNOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1234 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1235 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1236
1079 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1239
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1242}
1088 1243
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1245INLINE void
1091transfer_tail (pTHX) 1246transfer_tail (pTHX)
1092{ 1247{
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); 1248 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} 1249}
1109 1250
1110/* 1251/*
1111 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1253 */
… …
1124 /* normally we would need to skip the entersub here */ 1265 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1266 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1267 /* PL_nop = PL_nop->op_next */
1127 1268
1128 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1130 1271
1131 /* cctx_run is the alternative tail of transfer() */ 1272 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1273 transfer_tail (aTHX);
1134 1274
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1275 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these
1281 */
1138 1282
1139 /* 1283 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1284 * 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) 1285 * 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 1286 * 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" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1291 */
1146 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1294 }
1149} 1295}
… …
1226cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1227{ 1373{
1228 if (!cctx) 1374 if (!cctx)
1229 return; 1375 return;
1230 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1231 --cctx_count; 1379 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1380 coro_destroy (&cctx->cctx);
1233 1381
1234 /* coro_transfer creates new, empty cctx's */ 1382 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1383 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1294 1442
1295static void 1443static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1298 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1299 { 1449 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 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,"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1452
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)) 1453 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,"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1455
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1457 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,"); 1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1459#endif
1313 } 1460 }
1314} 1461}
1315 1462
1316/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1317static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1466{
1320 dSTACKLEVEL; 1467 dSTACKLEVEL;
1321 1468
1322 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1470 if (expect_false (!prev))
1324 { 1471 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1472 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1474 }
1328 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1329 { 1476 {
1330 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1331 1478
1332 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1333 { 1480 {
1334 /* create a new empty/source context */ 1481 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1338 } 1484 }
1339 1485
1340 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1488
1345 /* first get rid of the old state */ 1489 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1490 save_perl (aTHX_ prev);
1347 1491
1348 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1354 } 1498 }
1355 else 1499 else
1356 load_perl (aTHX_ next); 1500 load_perl (aTHX_ next);
1357 1501
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1502 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1503 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1504 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1505 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1506 && !force_cctx
1365 )) 1507 ))
1366 { 1508 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1509 /* 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)); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1511
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 */ 1512 /* 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 */ 1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1515 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1516 next->cctx = cctx_get (aTHX);
1377 1517
1378 cctx_put (prev__cctx); 1518 cctx_put (cctx_current);
1379 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1380 1522
1381 ++next->usecount; 1523 ++next->usecount;
1382 1524
1383 if (expect_true (!next->cctx)) 1525 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1527
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1528 next->cctx = 0;
1387 transfer_next = next;
1388 1529
1389 if (expect_false (prev__cctx != next->cctx)) 1530 if (expect_false (cctx_prev != cctx_current))
1390 { 1531 {
1391 prev__cctx->top_env = PL_top_env; 1532 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1533 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1535 }
1395 1536
1396 transfer_tail (aTHX); 1537 transfer_tail (aTHX);
1397 } 1538 }
1398} 1539}
… …
1405static int 1546static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1548{
1408 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1409 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1410 1554
1411 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1412 1556
1413 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1414 { 1558 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1561 --coro_nready;
1419 UNLOCK;
1420 } 1562 }
1421 else 1563 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1565
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1425 { 1567 && coro->mainstack != main_mainstack
1426 struct coro temp; 1568 && coro->slot
1427 1569 && !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);
1432
1433 coro_destruct (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439 1571
1440 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1442 1576
1443 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1446 1580
… …
1502 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1503} 1637}
1504 1638
1505/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1506 1640
1507static void 1641INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1509{ 1643{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1645
1513static SV * 1646 SvREFCNT_inc_NN (coro->hv);
1647
1648 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro;
1651}
1652
1653INLINE struct coro *
1514coro_deq (pTHX) 1654coro_deq (pTHX)
1515{ 1655{
1516 int prio; 1656 int prio;
1517 1657
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1520 return av_shift (coro_ready [prio]); 1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1521 1669
1522 return 0; 1670 return 0;
1523} 1671}
1524 1672
1525static int 1673static int
… …
1527{ 1675{
1528 struct coro *coro; 1676 struct coro *coro;
1529 SV *sv_hook; 1677 SV *sv_hook;
1530 void (*xs_hook)(void); 1678 void (*xs_hook)(void);
1531 1679
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1680 coro = SvSTATE (coro_sv);
1536 1681
1537 if (coro->flags & CF_READY) 1682 if (coro->flags & CF_READY)
1538 return 0; 1683 return 0;
1539 1684
1540 coro->flags |= CF_READY; 1685 coro->flags |= CF_READY;
1541 1686
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1687 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1688 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1689
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1690 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1691 ++coro_nready;
1549 1692
1550 UNLOCK;
1551
1552 if (sv_hook) 1693 if (sv_hook)
1553 { 1694 {
1554 dSP; 1695 dSP;
1555 1696
1556 ENTER; 1697 ENTER;
1557 SAVETMPS; 1698 SAVETMPS;
1558 1699
1559 PUSHMARK (SP); 1700 PUSHMARK (SP);
1560 PUTBACK; 1701 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1702 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1703
1564 FREETMPS; 1704 FREETMPS;
1565 LEAVE; 1705 LEAVE;
1566 } 1706 }
1567 1707
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1715api_is_ready (pTHX_ SV *coro_sv)
1576{ 1716{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1717 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1718}
1579 1719
1720/* expects to own a reference to next->hv */
1580INLINE void 1721INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1722prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1723{
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); 1724 SV *prev_sv = SvRV (coro_current);
1725
1627 ta->prev = SvSTATE (prev_sv); 1726 ta->prev = SvSTATE_hv (prev_sv);
1727 ta->next = next;
1728
1628 TRANSFER_CHECK (*ta); 1729 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1730
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1731 SvRV_set (coro_current, (SV *)next->hv);
1632 1732
1633 LOCK;
1634 free_coro_mortal (aTHX); 1733 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1734 coro_mortal = prev_sv;
1636 UNLOCK; 1735}
1736
1737static void
1738prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1739{
1740 for (;;)
1741 {
1742 struct coro *next = coro_deq (aTHX);
1743
1744 if (expect_true (next))
1745 {
1746 /* cannot transfer to destroyed coros, skip and look for next */
1747 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1748 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1749 else
1750 {
1751 next->flags &= ~CF_READY;
1752 --coro_nready;
1753
1754 prepare_schedule_to (aTHX_ ta, next);
1755 break;
1756 }
1757 }
1758 else
1759 {
1760 /* nothing to schedule: call the idle handler */
1761 if (SvROK (sv_idle)
1762 && SvOBJECT (SvRV (sv_idle)))
1763 {
1764 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1765 api_ready (aTHX_ SvRV (sv_idle));
1766 --coro_nready;
1767 }
1768 else
1769 {
1770 dSP;
1771
1772 ENTER;
1773 SAVETMPS;
1774
1775 PUSHMARK (SP);
1776 PUTBACK;
1777 call_sv (sv_idle, G_VOID | G_DISCARD);
1778
1779 FREETMPS;
1780 LEAVE;
1781 }
1782 }
1783 }
1637} 1784}
1638 1785
1639INLINE void 1786INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1787prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1788{
… …
1662{ 1809{
1663 struct coro_transfer_args ta; 1810 struct coro_transfer_args ta;
1664 1811
1665 prepare_schedule (aTHX_ &ta); 1812 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1813 TRANSFER (ta, 1);
1814}
1815
1816static void
1817api_schedule_to (pTHX_ SV *coro_sv)
1818{
1819 struct coro_transfer_args ta;
1820 struct coro *next = SvSTATE (coro_sv);
1821
1822 SvREFCNT_inc_NN (coro_sv);
1823 prepare_schedule_to (aTHX_ &ta, next);
1667} 1824}
1668 1825
1669static int 1826static int
1670api_cede (pTHX) 1827api_cede (pTHX)
1671{ 1828{
… …
1700static void 1857static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1858api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1859{
1703 struct coro *coro = SvSTATE (coro_sv); 1860 struct coro *coro = SvSTATE (coro_sv);
1704 1861
1862 if (coro->flags & CF_RUNNING)
1863 croak ("cannot enable tracing on a running coroutine, caught");
1864
1705 if (flags & CC_TRACE) 1865 if (flags & CC_TRACE)
1706 { 1866 {
1707 if (!coro->cctx) 1867 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1868 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1869 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1870 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1871
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1872 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1873 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1874 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1875 {
… …
1720 else 1880 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1881 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1882 }
1723} 1883}
1724 1884
1725#if 0 1885static void
1886coro_call_on_destroy (pTHX_ struct coro *coro)
1887{
1888 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1889 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1890
1891 if (on_destroyp)
1892 {
1893 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1894
1895 while (AvFILLp (on_destroy) >= 0)
1896 {
1897 dSP; /* don't disturb outer sp */
1898 SV *cb = av_pop (on_destroy);
1899
1900 PUSHMARK (SP);
1901
1902 if (statusp)
1903 {
1904 int i;
1905 AV *status = (AV *)SvRV (*statusp);
1906 EXTEND (SP, AvFILLp (status) + 1);
1907
1908 for (i = 0; i <= AvFILLp (status); ++i)
1909 PUSHs (AvARRAY (status)[i]);
1910 }
1911
1912 PUTBACK;
1913 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1914 }
1915 }
1916}
1917
1918static void
1919slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 int i;
1922 HV *hv = (HV *)SvRV (coro_current);
1923 AV *av = newAV ();
1924
1925 av_extend (av, items - 1);
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928
1929 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1930
1931 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1932 api_ready (aTHX_ sv_manager);
1933
1934 frame->prepare = prepare_schedule;
1935 frame->check = slf_check_repeat;
1936
1937 /* as a minor optimisation, we could unwind all stacks here */
1938 /* but that puts extra pressure on pp_slf, and is not worth much */
1939 /*coro_unwind_stacks (aTHX);*/
1940}
1941
1942/*****************************************************************************/
1943/* async pool handler */
1944
1726static int 1945static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1946slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1947{
1729 AV *padlist; 1948 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1949 struct coro *coro = (struct coro *)frame->data;
1731 1950
1732 abort (); 1951 if (!coro->invoke_cb)
1952 return 1; /* loop till we have invoke */
1953 else
1954 {
1955 hv_store (hv, "desc", sizeof ("desc") - 1,
1956 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1957
1958 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1959
1960 {
1961 dSP;
1962 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1963 PUTBACK;
1964 }
1965
1966 SvREFCNT_dec (GvAV (PL_defgv));
1967 GvAV (PL_defgv) = coro->invoke_av;
1968 coro->invoke_av = 0;
1969
1970 return 0;
1971 }
1972}
1973
1974static void
1975slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1976{
1977 HV *hv = (HV *)SvRV (coro_current);
1978 struct coro *coro = SvSTATE_hv ((SV *)hv);
1979
1980 if (expect_true (coro->saved_deffh))
1981 {
1982 /* subsequent iteration */
1983 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1984 coro->saved_deffh = 0;
1985
1986 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1987 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1988 {
1989 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1990 coro->invoke_av = newAV ();
1991
1992 frame->prepare = prepare_nop;
1993 }
1994 else
1995 {
1996 av_clear (GvAV (PL_defgv));
1997 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1998
1999 coro->prio = 0;
2000
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (aTHX_ coro_current, 0);
2003
2004 frame->prepare = prepare_schedule;
2005 av_push (av_async_pool, SvREFCNT_inc (hv));
2006 }
2007 }
2008 else
2009 {
2010 /* first iteration, simply fall through */
2011 frame->prepare = prepare_nop;
2012 }
2013
2014 frame->check = slf_check_pool_handler;
2015 frame->data = (void *)coro;
2016}
2017
2018/*****************************************************************************/
2019/* rouse callback */
2020
2021#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2022
2023static void
2024coro_rouse_callback (pTHX_ CV *cv)
2025{
2026 dXSARGS;
2027 SV *data = (SV *)S_GENSUB_ARG;
2028
2029 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2030 {
2031 /* first call, set args */
2032 SV *coro = SvRV (data);
2033 AV *av = newAV ();
2034
2035 SvRV_set (data, (SV *)av);
2036
2037 /* better take a full copy of the arguments */
2038 while (items--)
2039 av_store (av, items, newSVsv (ST (items)));
2040
2041 api_ready (aTHX_ coro);
2042 SvREFCNT_dec (coro);
2043 }
2044
2045 XSRETURN_EMPTY;
2046}
2047
2048static int
2049slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2050{
2051 SV *data = (SV *)frame->data;
2052
2053 if (CORO_THROW)
2054 return 0;
2055
2056 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2057 return 1;
2058
2059 /* now push all results on the stack */
2060 {
2061 dSP;
2062 AV *av = (AV *)SvRV (data);
2063 int i;
2064
2065 EXTEND (SP, AvFILLp (av) + 1);
2066 for (i = 0; i <= AvFILLp (av); ++i)
2067 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2068
2069 /* we have stolen the elements, so set length to zero and free */
2070 AvFILLp (av) = -1;
2071 av_undef (av);
2072
2073 PUTBACK;
2074 }
1733 2075
1734 return 0; 2076 return 0;
1735} 2077}
1736 2078
1737static MGVTBL coro_gensub_vtbl = { 2079static void
1738 0, 0, 0, 0, 2080slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2081{
1740}; 2082 SV *cb;
1741#endif 2083
2084 if (items)
2085 cb = arg [0];
2086 else
2087 {
2088 struct coro *coro = SvSTATE_current;
2089
2090 if (!coro->rouse_cb)
2091 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2092
2093 cb = sv_2mortal (coro->rouse_cb);
2094 coro->rouse_cb = 0;
2095 }
2096
2097 if (!SvROK (cb)
2098 || SvTYPE (SvRV (cb)) != SVt_PVCV
2099 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2100 croak ("Coro::rouse_wait called with illegal callback argument,");
2101
2102 {
2103 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2104 SV *data = (SV *)S_GENSUB_ARG;
2105
2106 frame->data = (void *)data;
2107 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2108 frame->check = slf_check_rouse_wait;
2109 }
2110}
2111
2112static SV *
2113coro_new_rouse_cb (pTHX)
2114{
2115 HV *hv = (HV *)SvRV (coro_current);
2116 struct coro *coro = SvSTATE_hv (hv);
2117 SV *data = newRV_inc ((SV *)hv);
2118 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2119
2120 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2121 SvREFCNT_dec (data); /* magicext increases the refcount */
2122
2123 SvREFCNT_dec (coro->rouse_cb);
2124 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2125
2126 return cb;
2127}
2128
2129/*****************************************************************************/
2130/* schedule-like-function opcode (SLF) */
2131
2132static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2133static const CV *slf_cv;
2134static SV **slf_argv;
2135static int slf_argc, slf_arga; /* count, allocated */
2136static I32 slf_ax; /* top of stack, for restore */
2137
2138/* this restores the stack in the case we patched the entersub, to */
2139/* recreate the stack frame as perl will on following calls */
2140/* since entersub cleared the stack */
2141static OP *
2142pp_restore (pTHX)
2143{
2144 int i;
2145 SV **SP = PL_stack_base + slf_ax;
2146
2147 PUSHMARK (SP);
2148
2149 EXTEND (SP, slf_argc + 1);
2150
2151 for (i = 0; i < slf_argc; ++i)
2152 PUSHs (sv_2mortal (slf_argv [i]));
2153
2154 PUSHs ((SV *)CvGV (slf_cv));
2155
2156 RETURNOP (slf_restore.op_first);
2157}
2158
2159static void
2160slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2161{
2162 SV **arg = (SV **)slf_frame.data;
2163
2164 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2165}
2166
2167static void
2168slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 if (items != 2)
2171 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2172
2173 frame->prepare = slf_prepare_transfer;
2174 frame->check = slf_check_nop;
2175 frame->data = (void *)arg; /* let's hope it will stay valid */
2176}
2177
2178static void
2179slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2180{
2181 frame->prepare = prepare_schedule;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2187{
2188 struct coro *next = (struct coro *)slf_frame.data;
2189
2190 SvREFCNT_inc_NN (next->hv);
2191 prepare_schedule_to (aTHX_ ta, next);
2192}
2193
2194static void
2195slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 if (!items)
2198 croak ("Coro::schedule_to expects a coroutine argument, caught");
2199
2200 frame->data = (void *)SvSTATE (arg [0]);
2201 frame->prepare = slf_prepare_schedule_to;
2202 frame->check = slf_check_nop;
2203}
2204
2205static void
2206slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 api_ready (aTHX_ SvRV (coro_current));
2209
2210 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2211}
2212
2213static void
2214slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2215{
2216 frame->prepare = prepare_cede;
2217 frame->check = slf_check_nop;
2218}
2219
2220static void
2221slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2222{
2223 frame->prepare = prepare_cede_notself;
2224 frame->check = slf_check_nop;
2225}
2226
2227/*
2228 * these not obviously related functions are all rolled into one
2229 * function to increase chances that they all will call transfer with the same
2230 * stack offset
2231 * SLF stands for "schedule-like-function".
2232 */
2233static OP *
2234pp_slf (pTHX)
2235{
2236 I32 checkmark; /* mark SP to see how many elements check has pushed */
2237
2238 /* set up the slf frame, unless it has already been set-up */
2239 /* the latter happens when a new coro has been started */
2240 /* or when a new cctx was attached to an existing coroutine */
2241 if (expect_true (!slf_frame.prepare))
2242 {
2243 /* first iteration */
2244 dSP;
2245 SV **arg = PL_stack_base + TOPMARK + 1;
2246 int items = SP - arg; /* args without function object */
2247 SV *gv = *sp;
2248
2249 /* do a quick consistency check on the "function" object, and if it isn't */
2250 /* for us, divert to the real entersub */
2251 if (SvTYPE (gv) != SVt_PVGV
2252 || !GvCV (gv)
2253 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2254 return PL_ppaddr[OP_ENTERSUB](aTHX);
2255
2256 if (!(PL_op->op_flags & OPf_STACKED))
2257 {
2258 /* ampersand-form of call, use @_ instead of stack */
2259 AV *av = GvAV (PL_defgv);
2260 arg = AvARRAY (av);
2261 items = AvFILLp (av) + 1;
2262 }
2263
2264 /* now call the init function, which needs to set up slf_frame */
2265 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2266 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2267
2268 /* pop args */
2269 SP = PL_stack_base + POPMARK;
2270
2271 PUTBACK;
2272 }
2273
2274 /* now that we have a slf_frame, interpret it! */
2275 /* we use a callback system not to make the code needlessly */
2276 /* complicated, but so we can run multiple perl coros from one cctx */
2277
2278 do
2279 {
2280 struct coro_transfer_args ta;
2281
2282 slf_frame.prepare (aTHX_ &ta);
2283 TRANSFER (ta, 0);
2284
2285 checkmark = PL_stack_sp - PL_stack_base;
2286 }
2287 while (slf_frame.check (aTHX_ &slf_frame));
2288
2289 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2290
2291 /* exception handling */
2292 if (expect_false (CORO_THROW))
2293 {
2294 SV *exception = sv_2mortal (CORO_THROW);
2295
2296 CORO_THROW = 0;
2297 sv_setsv (ERRSV, exception);
2298 croak (0);
2299 }
2300
2301 /* return value handling - mostly like entersub */
2302 /* make sure we put something on the stack in scalar context */
2303 if (GIMME_V == G_SCALAR)
2304 {
2305 dSP;
2306 SV **bot = PL_stack_base + checkmark;
2307
2308 if (sp == bot) /* too few, push undef */
2309 bot [1] = &PL_sv_undef;
2310 else if (sp != bot + 1) /* too many, take last one */
2311 bot [1] = *sp;
2312
2313 SP = bot + 1;
2314
2315 PUTBACK;
2316 }
2317
2318 return NORMAL;
2319}
2320
2321static void
2322api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2323{
2324 int i;
2325 SV **arg = PL_stack_base + ax;
2326 int items = PL_stack_sp - arg + 1;
2327
2328 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2329
2330 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2331 && PL_op->op_ppaddr != pp_slf)
2332 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2333
2334 CvFLAGS (cv) |= CVf_SLF;
2335 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2336 slf_cv = cv;
2337
2338 /* we patch the op, and then re-run the whole call */
2339 /* we have to put the same argument on the stack for this to work */
2340 /* and this will be done by pp_restore */
2341 slf_restore.op_next = (OP *)&slf_restore;
2342 slf_restore.op_type = OP_CUSTOM;
2343 slf_restore.op_ppaddr = pp_restore;
2344 slf_restore.op_first = PL_op;
2345
2346 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2347
2348 if (PL_op->op_flags & OPf_STACKED)
2349 {
2350 if (items > slf_arga)
2351 {
2352 slf_arga = items;
2353 free (slf_argv);
2354 slf_argv = malloc (slf_arga * sizeof (SV *));
2355 }
2356
2357 slf_argc = items;
2358
2359 for (i = 0; i < items; ++i)
2360 slf_argv [i] = SvREFCNT_inc (arg [i]);
2361 }
2362 else
2363 slf_argc = 0;
2364
2365 PL_op->op_ppaddr = pp_slf;
2366 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2367
2368 PL_op = (OP *)&slf_restore;
2369}
2370
2371/*****************************************************************************/
2372/* dynamic wind */
2373
2374static void
2375on_enterleave_call (pTHX_ SV *cb)
2376{
2377 dSP;
2378
2379 PUSHSTACK;
2380
2381 PUSHMARK (SP);
2382 PUTBACK;
2383 call_sv (cb, G_VOID | G_DISCARD);
2384 SPAGAIN;
2385
2386 POPSTACK;
2387}
2388
2389static SV *
2390coro_avp_pop_and_free (pTHX_ AV **avp)
2391{
2392 AV *av = *avp;
2393 SV *res = av_pop (av);
2394
2395 if (AvFILLp (av) < 0)
2396 {
2397 *avp = 0;
2398 SvREFCNT_dec (av);
2399 }
2400
2401 return res;
2402}
2403
2404static void
2405coro_pop_on_enter (pTHX_ void *coro)
2406{
2407 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2408 SvREFCNT_dec (cb);
2409}
2410
2411static void
2412coro_pop_on_leave (pTHX_ void *coro)
2413{
2414 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2415 on_enterleave_call (aTHX_ sv_2mortal (cb));
2416}
1742 2417
1743/*****************************************************************************/ 2418/*****************************************************************************/
1744/* PerlIO::cede */ 2419/* PerlIO::cede */
1745 2420
1746typedef struct 2421typedef struct
… …
1814 PerlIOBuf_get_cnt, 2489 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2490 PerlIOBuf_set_ptrcnt,
1816}; 2491};
1817 2492
1818/*****************************************************************************/ 2493/*****************************************************************************/
2494/* Coro::Semaphore & Coro::Signal */
1819 2495
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 * 2496static SV *
1831pp_restore (pTHX) 2497coro_waitarray_new (pTHX_ int count)
1832{ 2498{
1833 dSP; 2499 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2500 AV *av = newAV ();
2501 SV **ary;
1834 2502
1835 PUSHMARK (SP); 2503 /* unfortunately, building manually saves memory */
2504 Newx (ary, 2, SV *);
2505 AvALLOC (av) = ary;
2506#if PERL_VERSION_ATLEAST (5,10,0)
2507 AvARRAY (av) = ary;
2508#else
2509 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2510 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2511 SvPVX ((SV *)av) = (char *)ary;
2512#endif
2513 AvMAX (av) = 1;
2514 AvFILLp (av) = 0;
2515 ary [0] = newSViv (count);
1836 2516
1837 EXTEND (SP, 3); 2517 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} 2518}
1845 2519
1846static void 2520/* 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 2521
1852static void 2522static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2523coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2524{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2525 SV *count_sv = AvARRAY (av)[0];
2526 IV count = SvIVX (count_sv);
1856 2527
1857 frame->prepare = slf_prepare_set_stacklevel; 2528 count += adjust;
1858 frame->check = slf_check_nop; 2529 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2530
1862static void 2531 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2532 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 { 2533 {
1921 /* first iteration */ 2534 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 2535
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2536 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2537 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2538 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2539 cb = av_shift (av);
1931 2540
1932 /* pop args */ 2541 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2542 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2543 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2544 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2545 }
1942 2546 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2547 {
1973 if (sp == bot) 2548 dSP;
1974 XPUSHs (&PL_sv_undef); 2549 PUSHMARK (SP);
1975 2550 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2551 PUTBACK;
2552 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2553 }
1978 2554
1979 PUTBACK; 2555 SvREFCNT_dec (cb);
1980 } 2556 }
1981
1982 return NORMAL;
1983} 2557}
1984 2558
1985static void 2559static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2560coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2561{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2562 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2563 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2564}
2017
2018/*****************************************************************************/
2019 2565
2020static int 2566static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2567slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2568{
2023 AV *av = (AV *)frame->data; 2569 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2570 SV *count_sv = AvARRAY (av)[0];
2025 2571
2572 /* if we are about to throw, don't actually acquire the lock, just throw */
2573 if (CORO_THROW)
2574 return 0;
2026 if (SvIVX (count_sv) > 0) 2575 else if (SvIVX (count_sv) > 0)
2027 { 2576 {
2577 SvSTATE_current->on_destroy = 0;
2578
2579 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2580 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2581 else
2582 coro_semaphore_adjust (aTHX_ av, 0);
2583
2029 return 0; 2584 return 0;
2030 } 2585 }
2031 else 2586 else
2032 { 2587 {
2033 int i; 2588 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2597 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2598 return 1;
2044 } 2599 }
2045} 2600}
2046 2601
2047static void 2602static int
2603slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2604{
2605 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2606}
2607
2608static int
2609slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2610{
2611 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2612}
2613
2614static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2615slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2616{
2050 AV *av = (AV *)SvRV (arg [0]); 2617 AV *av = (AV *)SvRV (arg [0]);
2051 2618
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2619 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2620 {
… …
2058 { 2625 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2626 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2627
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2628 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2629 frame->prepare = prepare_schedule;
2063 }
2064 2630
2631 /* to avoid race conditions when a woken-up coro gets terminated */
2632 /* we arrange for a temporary on_destroy that calls adjust (0) */
2633 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2634 }
2635}
2636
2637static void
2638slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2639{
2640 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2641 frame->check = slf_check_semaphore_down;
2066
2067} 2642}
2643
2644static void
2645slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 if (items >= 2)
2648 {
2649 /* callback form */
2650 AV *av = (AV *)SvRV (arg [0]);
2651 SV *cb_cv = s_get_cv_croak (arg [1]);
2652
2653 av_push (av, SvREFCNT_inc_NN (cb_cv));
2654
2655 if (SvIVX (AvARRAY (av)[0]) > 0)
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2658 frame->prepare = prepare_nop;
2659 frame->check = slf_check_nop;
2660 }
2661 else
2662 {
2663 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2664 frame->check = slf_check_semaphore_wait;
2665 }
2666}
2667
2668/* signal */
2669
2670static void
2671coro_signal_wake (pTHX_ AV *av, int count)
2672{
2673 SvIVX (AvARRAY (av)[0]) = 0;
2674
2675 /* now signal count waiters */
2676 while (count > 0 && AvFILLp (av) > 0)
2677 {
2678 SV *cb;
2679
2680 /* swap first two elements so we can shift a waiter */
2681 cb = AvARRAY (av)[0];
2682 AvARRAY (av)[0] = AvARRAY (av)[1];
2683 AvARRAY (av)[1] = cb;
2684
2685 cb = av_shift (av);
2686
2687 if (SvTYPE (cb) == SVt_PVCV)
2688 {
2689 dSP;
2690 PUSHMARK (SP);
2691 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2692 PUTBACK;
2693 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2694 }
2695 else
2696 {
2697 api_ready (aTHX_ cb);
2698 sv_setiv (cb, 0); /* signal waiter */
2699 }
2700
2701 SvREFCNT_dec (cb);
2702
2703 --count;
2704 }
2705}
2706
2707static int
2708slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2709{
2710 /* if we are about to throw, also stop waiting */
2711 return SvROK ((SV *)frame->data) && !CORO_THROW;
2712}
2713
2714static void
2715slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 AV *av = (AV *)SvRV (arg [0]);
2718
2719 if (items >= 2)
2720 {
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722 av_push (av, SvREFCNT_inc_NN (cb_cv));
2723
2724 if (SvIVX (AvARRAY (av)[0]))
2725 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2726
2727 frame->prepare = prepare_nop;
2728 frame->check = slf_check_nop;
2729 }
2730 else if (SvIVX (AvARRAY (av)[0]))
2731 {
2732 SvIVX (AvARRAY (av)[0]) = 0;
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2739
2740 av_push (av, waiter);
2741
2742 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_signal_wait;
2745 }
2746}
2747
2748/*****************************************************************************/
2749/* Coro::AIO */
2750
2751#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2752
2753/* helper storage struct */
2754struct io_state
2755{
2756 int errorno;
2757 I32 laststype; /* U16 in 5.10.0 */
2758 int laststatval;
2759 Stat_t statcache;
2760};
2761
2762static void
2763coro_aio_callback (pTHX_ CV *cv)
2764{
2765 dXSARGS;
2766 AV *state = (AV *)S_GENSUB_ARG;
2767 SV *coro = av_pop (state);
2768 SV *data_sv = newSV (sizeof (struct io_state));
2769
2770 av_extend (state, items - 1);
2771
2772 sv_upgrade (data_sv, SVt_PV);
2773 SvCUR_set (data_sv, sizeof (struct io_state));
2774 SvPOK_only (data_sv);
2775
2776 {
2777 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2778
2779 data->errorno = errno;
2780 data->laststype = PL_laststype;
2781 data->laststatval = PL_laststatval;
2782 data->statcache = PL_statcache;
2783 }
2784
2785 /* now build the result vector out of all the parameters and the data_sv */
2786 {
2787 int i;
2788
2789 for (i = 0; i < items; ++i)
2790 av_push (state, SvREFCNT_inc_NN (ST (i)));
2791 }
2792
2793 av_push (state, data_sv);
2794
2795 api_ready (aTHX_ coro);
2796 SvREFCNT_dec (coro);
2797 SvREFCNT_dec ((AV *)state);
2798}
2799
2800static int
2801slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2802{
2803 AV *state = (AV *)frame->data;
2804
2805 /* if we are about to throw, return early */
2806 /* this does not cancel the aio request, but at least */
2807 /* it quickly returns */
2808 if (CORO_THROW)
2809 return 0;
2810
2811 /* one element that is an RV? repeat! */
2812 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2813 return 1;
2814
2815 /* restore status */
2816 {
2817 SV *data_sv = av_pop (state);
2818 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2819
2820 errno = data->errorno;
2821 PL_laststype = data->laststype;
2822 PL_laststatval = data->laststatval;
2823 PL_statcache = data->statcache;
2824
2825 SvREFCNT_dec (data_sv);
2826 }
2827
2828 /* push result values */
2829 {
2830 dSP;
2831 int i;
2832
2833 EXTEND (SP, AvFILLp (state) + 1);
2834 for (i = 0; i <= AvFILLp (state); ++i)
2835 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2836
2837 PUTBACK;
2838 }
2839
2840 return 0;
2841}
2842
2843static void
2844slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2845{
2846 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2847 SV *coro_hv = SvRV (coro_current);
2848 struct coro *coro = SvSTATE_hv (coro_hv);
2849
2850 /* put our coroutine id on the state arg */
2851 av_push (state, SvREFCNT_inc_NN (coro_hv));
2852
2853 /* first see whether we have a non-zero priority and set it as AIO prio */
2854 if (coro->prio)
2855 {
2856 dSP;
2857
2858 static SV *prio_cv;
2859 static SV *prio_sv;
2860
2861 if (expect_false (!prio_cv))
2862 {
2863 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2864 prio_sv = newSViv (0);
2865 }
2866
2867 PUSHMARK (SP);
2868 sv_setiv (prio_sv, coro->prio);
2869 XPUSHs (prio_sv);
2870
2871 PUTBACK;
2872 call_sv (prio_cv, G_VOID | G_DISCARD);
2873 }
2874
2875 /* now call the original request */
2876 {
2877 dSP;
2878 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2879 int i;
2880
2881 PUSHMARK (SP);
2882
2883 /* first push all args to the stack */
2884 EXTEND (SP, items + 1);
2885
2886 for (i = 0; i < items; ++i)
2887 PUSHs (arg [i]);
2888
2889 /* now push the callback closure */
2890 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2891
2892 /* now call the AIO function - we assume our request is uncancelable */
2893 PUTBACK;
2894 call_sv ((SV *)req, G_VOID | G_DISCARD);
2895 }
2896
2897 /* now that the requets is going, we loop toll we have a result */
2898 frame->data = (void *)state;
2899 frame->prepare = prepare_schedule;
2900 frame->check = slf_check_aio_req;
2901}
2902
2903static void
2904coro_aio_req_xs (pTHX_ CV *cv)
2905{
2906 dXSARGS;
2907
2908 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2909
2910 XSRETURN_EMPTY;
2911}
2912
2913/*****************************************************************************/
2914
2915#if CORO_CLONE
2916# include "clone.c"
2917#endif
2068 2918
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2920
2071PROTOTYPES: DISABLE 2921PROTOTYPES: DISABLE
2072 2922
2073BOOT: 2923BOOT:
2074{ 2924{
2075#ifdef USE_ITHREADS 2925#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2926# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2927 coro_thx = PERL_GET_CONTEXT;
2079# endif 2928# endif
2080#endif 2929#endif
2081 BOOT_PAGESIZE; 2930 BOOT_PAGESIZE;
2082 2931
2932 cctx_current = cctx_new_empty ();
2933
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2934 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2935 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 2936
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2937 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2087 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2938 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2101 main_mainstack = PL_mainstack; 2952 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2953 main_top_env = PL_top_env;
2103 2954
2104 while (main_top_env->je_prev) 2955 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2956 main_top_env = main_top_env->je_prev;
2957
2958 {
2959 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2960
2961 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2962 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2963
2964 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2965 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2966 }
2106 2967
2107 coroapi.ver = CORO_API_VERSION; 2968 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2969 coroapi.rev = CORO_API_REVISION;
2109 2970
2110 coroapi.transfer = api_transfer; 2971 coroapi.transfer = api_transfer;
… …
2121 2982
2122 if (!svp) croak ("Time::HiRes is required"); 2983 if (!svp) croak ("Time::HiRes is required");
2123 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2984 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2124 2985
2125 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2986 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2987
2988 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2989 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2126 } 2990 }
2127 2991
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2992 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2129} 2993}
2130 2994
2131SV * 2995SV *
2132new (char *klass, ...) 2996new (char *klass, ...)
2997 ALIAS:
2998 Coro::new = 1
2133 CODE: 2999 CODE:
2134{ 3000{
2135 struct coro *coro; 3001 struct coro *coro;
2136 MAGIC *mg; 3002 MAGIC *mg;
2137 HV *hv; 3003 HV *hv;
3004 SV *cb;
2138 int i; 3005 int i;
3006
3007 if (items > 1)
3008 {
3009 cb = s_get_cv_croak (ST (1));
3010
3011 if (!ix)
3012 {
3013 if (CvISXSUB (cb))
3014 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3015
3016 if (!CvROOT (cb))
3017 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3018 }
3019 }
2139 3020
2140 Newz (0, coro, 1, struct coro); 3021 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 3022 coro->args = newAV ();
2142 coro->flags = CF_NEW; 3023 coro->flags = CF_NEW;
2143 3024
… …
2148 coro->hv = hv = newHV (); 3029 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3030 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 3031 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3032 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 3033
3034 if (items > 1)
3035 {
2153 av_extend (coro->args, items - 1); 3036 av_extend (coro->args, items - 1 + ix - 1);
3037
3038 if (ix)
3039 {
3040 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3041 cb = (SV *)cv_coro_run;
3042 }
3043
3044 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3045
2154 for (i = 1; i < items; i++) 3046 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 3047 av_push (coro->args, newSVsv (ST (i)));
3048 }
2156} 3049}
2157 OUTPUT: 3050 OUTPUT:
2158 RETVAL 3051 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 3052
2165void 3053void
2166transfer (...) 3054transfer (...)
2167 PROTOTYPE: $$ 3055 PROTOTYPE: $$
2168 CODE: 3056 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3057 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 3058
2171bool 3059bool
2172_destroy (SV *coro_sv) 3060_destroy (SV *coro_sv)
2173 CODE: 3061 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3062 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2178void 3066void
2179_exit (int code) 3067_exit (int code)
2180 PROTOTYPE: $ 3068 PROTOTYPE: $
2181 CODE: 3069 CODE:
2182 _exit (code); 3070 _exit (code);
3071
3072SV *
3073clone (Coro::State coro)
3074 CODE:
3075{
3076#if CORO_CLONE
3077 struct coro *ncoro = coro_clone (aTHX_ coro);
3078 MAGIC *mg;
3079 /* TODO: too much duplication */
3080 ncoro->hv = newHV ();
3081 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3082 mg->mg_flags |= MGf_DUP;
3083 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3084#else
3085 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3086#endif
3087}
3088 OUTPUT:
3089 RETVAL
2183 3090
2184int 3091int
2185cctx_stacksize (int new_stacksize = 0) 3092cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 3093 PROTOTYPE: ;$
2187 CODE: 3094 CODE:
… …
2237 eval = 1 3144 eval = 1
2238 CODE: 3145 CODE:
2239{ 3146{
2240 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3147 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2241 { 3148 {
2242 struct coro temp; 3149 struct coro *current = SvSTATE_current;
2243 3150
2244 if (!(coro->flags & CF_RUNNING)) 3151 if (current != coro)
2245 { 3152 {
2246 PUTBACK; 3153 PUTBACK;
2247 save_perl (aTHX_ &temp); 3154 save_perl (aTHX_ current);
2248 load_perl (aTHX_ coro); 3155 load_perl (aTHX_ coro);
3156 SPAGAIN;
2249 } 3157 }
2250 3158
2251 {
2252 dSP;
2253 ENTER;
2254 SAVETMPS;
2255 PUTBACK;
2256 PUSHSTACK; 3159 PUSHSTACK;
3160
2257 PUSHMARK (SP); 3161 PUSHMARK (SP);
3162 PUTBACK;
2258 3163
2259 if (ix) 3164 if (ix)
2260 eval_sv (coderef, 0); 3165 eval_sv (coderef, 0);
2261 else 3166 else
2262 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3167 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2263 3168
2264 POPSTACK; 3169 POPSTACK;
2265 SPAGAIN; 3170 SPAGAIN;
2266 FREETMPS;
2267 LEAVE;
2268 PUTBACK;
2269 }
2270 3171
2271 if (!(coro->flags & CF_RUNNING)) 3172 if (current != coro)
2272 { 3173 {
3174 PUTBACK;
2273 save_perl (aTHX_ coro); 3175 save_perl (aTHX_ coro);
2274 load_perl (aTHX_ &temp); 3176 load_perl (aTHX_ current);
2275 SPAGAIN; 3177 SPAGAIN;
2276 } 3178 }
2277 } 3179 }
2278} 3180}
2279 3181
… …
2283 ALIAS: 3185 ALIAS:
2284 is_ready = CF_READY 3186 is_ready = CF_READY
2285 is_running = CF_RUNNING 3187 is_running = CF_RUNNING
2286 is_new = CF_NEW 3188 is_new = CF_NEW
2287 is_destroyed = CF_DESTROYED 3189 is_destroyed = CF_DESTROYED
3190 is_suspended = CF_SUSPENDED
2288 CODE: 3191 CODE:
2289 RETVAL = boolSV (coro->flags & ix); 3192 RETVAL = boolSV (coro->flags & ix);
2290 OUTPUT: 3193 OUTPUT:
2291 RETVAL 3194 RETVAL
2292 3195
2293void 3196void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3197throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3198 PROTOTYPE: $;$
2296 CODE: 3199 CODE:
3200{
3201 struct coro *current = SvSTATE_current;
3202 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 3203 SvREFCNT_dec (*throwp);
3204 SvGETMAGIC (throw);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3205 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3206}
2299 3207
2300void 3208void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3209api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3210 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3211 C_ARGS: aTHX_ coro, flags
2304 3212
2305SV * 3213SV *
2306has_cctx (Coro::State coro) 3214has_cctx (Coro::State coro)
2307 PROTOTYPE: $ 3215 PROTOTYPE: $
2308 CODE: 3216 CODE:
2309 RETVAL = boolSV (!!coro->cctx); 3217 /* maybe manage the running flag differently */
3218 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2310 OUTPUT: 3219 OUTPUT:
2311 RETVAL 3220 RETVAL
2312 3221
2313int 3222int
2314is_traced (Coro::State coro) 3223is_traced (Coro::State coro)
… …
2334 3243
2335void 3244void
2336force_cctx () 3245force_cctx ()
2337 PROTOTYPE: 3246 PROTOTYPE:
2338 CODE: 3247 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3248 cctx_current->idle_sp = 0;
2341 3249
2342void 3250void
2343swap_defsv (Coro::State self) 3251swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3252 PROTOTYPE: $
2345 ALIAS: 3253 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3261 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3262
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3263 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3264 }
2357 3265
3266void
3267cancel (Coro::State self)
3268 CODE:
3269 coro_state_destroy (aTHX_ self);
3270 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3271
3272
3273SV *
3274enable_times (int enabled = enable_times)
3275 CODE:
3276{
3277 RETVAL = boolSV (enable_times);
3278
3279 if (enabled != enable_times)
3280 {
3281 enable_times = enabled;
3282
3283 coro_times_update ();
3284 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3285 }
3286}
3287 OUTPUT:
3288 RETVAL
3289
3290void
3291times (Coro::State self)
3292 PPCODE:
3293{
3294 struct coro *current = SvSTATE (coro_current);
3295
3296 if (expect_false (current == self))
3297 {
3298 coro_times_update ();
3299 coro_times_add (SvSTATE (coro_current));
3300 }
3301
3302 EXTEND (SP, 2);
3303 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3304 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3305
3306 if (expect_false (current == self))
3307 coro_times_sub (SvSTATE (coro_current));
3308}
3309
2358MODULE = Coro::State PACKAGE = Coro 3310MODULE = Coro::State PACKAGE = Coro
2359 3311
2360BOOT: 3312BOOT:
2361{ 3313{
2362 int i;
2363
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3314 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3315 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3316 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3317 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3318 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 SvREADONLY_on (coro_current); 3319 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3320 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3321 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3322 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3323
3324 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3325 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3326 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3327 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2370 3328
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3329 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3330
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2375 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2376 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2377 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2378 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2379
2380 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2381 coro_ready[i] = newAV ();
2382 3337
2383 { 3338 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3339 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3340
2386 coroapi.schedule = api_schedule; 3341 coroapi.schedule = api_schedule;
3342 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3343 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3344 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3345 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3346 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3347 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3348 coroapi.current = coro_current;
2393 3349
2394 GCoroAPI = &coroapi; 3350 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3351 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3352 SvREADONLY_on (sv);
2397 } 3353 }
2398} 3354}
2399 3355
2400void 3356void
3357terminate (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3360
3361void
2401schedule (...) 3362schedule (...)
2402 CODE: 3363 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3364 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3365
3366void
3367schedule_to (...)
3368 CODE:
3369 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3370
3371void
3372cede_to (...)
3373 CODE:
3374 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2404 3375
2405void 3376void
2406cede (...) 3377cede (...)
2407 CODE: 3378 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3379 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3380
2410void 3381void
2411cede_notself (...) 3382cede_notself (...)
2412 CODE: 3383 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3384 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2414 3385
2415void 3386void
2416_set_current (SV *current) 3387_set_current (SV *current)
2417 PROTOTYPE: $ 3388 PROTOTYPE: $
2418 CODE: 3389 CODE:
… …
2421 3392
2422void 3393void
2423_set_readyhook (SV *hook) 3394_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3395 PROTOTYPE: $
2425 CODE: 3396 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3397 SvREFCNT_dec (coro_readyhook);
3398 SvGETMAGIC (hook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3399 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3400
2431int 3401int
2432prio (Coro::State coro, int newprio = 0) 3402prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3403 PROTOTYPE: $;$
2434 ALIAS: 3404 ALIAS:
… …
2440 if (items > 1) 3410 if (items > 1)
2441 { 3411 {
2442 if (ix) 3412 if (ix)
2443 newprio = coro->prio - newprio; 3413 newprio = coro->prio - newprio;
2444 3414
2445 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3415 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2446 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3416 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2447 3417
2448 coro->prio = newprio; 3418 coro->prio = newprio;
2449 } 3419 }
2450} 3420}
2451 OUTPUT: 3421 OUTPUT:
… …
2465 CODE: 3435 CODE:
2466 RETVAL = coro_nready; 3436 RETVAL = coro_nready;
2467 OUTPUT: 3437 OUTPUT:
2468 RETVAL 3438 RETVAL
2469 3439
2470# for async_pool speedup
2471void 3440void
2472_pool_1 (SV *cb) 3441suspend (Coro::State self)
3442 PROTOTYPE: $
2473 CODE: 3443 CODE:
2474{ 3444 self->flags |= CF_SUSPENDED;
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3445
2482 if (!invoke) 3446void
3447resume (Coro::State self)
3448 PROTOTYPE: $
3449 CODE:
3450 self->flags &= ~CF_SUSPENDED;
3451
3452void
3453_pool_handler (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3456
3457void
3458async_pool (SV *cv, ...)
3459 PROTOTYPE: &@
3460 PPCODE:
3461{
3462 HV *hv = (HV *)av_pop (av_async_pool);
3463 AV *av = newAV ();
3464 SV *cb = ST (0);
3465 int i;
3466
3467 av_extend (av, items - 2);
3468 for (i = 1; i < items; ++i)
3469 av_push (av, SvREFCNT_inc_NN (ST (i)));
3470
3471 if ((SV *)hv == &PL_sv_undef)
2483 { 3472 {
2484 SV *old = PL_diehook; 3473 PUSHMARK (SP);
2485 PL_diehook = 0; 3474 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3475 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3476 PUSHs ((SV *)cv_pool_handler);
3477 PUTBACK;
3478 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3479 SPAGAIN;
3480
3481 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3482 }
2489 3483
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3484 {
2503 av_fill (defav, len - 1); 3485 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3486
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3487 assert (!coro->invoke_cb);
3488 assert (!coro->invoke_av);
3489 coro->invoke_cb = SvREFCNT_inc (cb);
3490 coro->invoke_av = av;
2506 } 3491 }
2507}
2508 3492
2509void 3493 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3494
3495 if (GIMME_V != G_VOID)
3496 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3497 else
3498 SvREFCNT_dec (hv);
3499}
3500
3501SV *
3502rouse_cb ()
3503 PROTOTYPE:
2511 CODE: 3504 CODE:
2512{ 3505 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 3506 OUTPUT:
2585 RETVAL 3507 RETVAL
2586 3508
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3509void
2593_get_state (SV *self) 3510rouse_wait (...)
2594 PROTOTYPE: $ 3511 PROTOTYPE: ;$
2595 PPCODE: 3512 PPCODE:
2596{ 3513 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621 3514
2622void 3515void
2623_set_state (SV *state) 3516on_enter (SV *block)
3517 ALIAS:
3518 on_leave = 1
2624 PROTOTYPE: $ 3519 PROTOTYPE: &
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647SV *
2648_schedule (...)
2649 CODE: 3520 CODE:
2650{ 3521{
2651 static int incede; 3522 struct coro *coro = SvSTATE_current;
3523 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2652 3524
2653 api_cede_notself (aTHX); 3525 block = s_get_cv_croak (block);
2654 3526
2655 ++incede; 3527 if (!*avp)
2656 while (coro_nready >= incede && api_cede (aTHX)) 3528 *avp = newAV ();
2657 ;
2658 3529
2659 sv_setsv (sv_activity, &PL_sv_undef); 3530 av_push (*avp, SvREFCNT_inc (block));
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667 3531
2668 --incede; 3532 if (!ix)
3533 on_enterleave_call (aTHX_ block);
3534
3535 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3536 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3537 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2669} 3538}
2670 3539
2671 3540
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3541MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3542
2674BOOT: 3543BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3544 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3545
3546
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3547MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3548
2679SV * 3549SV *
2680new (SV *klass, SV *count_ = 0) 3550new (SV *klass, SV *count = 0)
2681 CODE: 3551 CODE:
2682{ 3552{
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3553 int semcnt = 1;
2684 AV *av = newAV (); 3554
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3555 if (count)
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3556 {
3557 SvGETMAGIC (count);
3558
3559 if (SvOK (count))
3560 semcnt = SvIV (count);
3561 }
3562
3563 RETVAL = sv_bless (
3564 coro_waitarray_new (aTHX_ semcnt),
3565 GvSTASH (CvGV (cv))
3566 );
2687} 3567}
3568 OUTPUT:
3569 RETVAL
3570
3571# helper for Coro::Channel and others
3572SV *
3573_alloc (int count)
3574 CODE:
3575 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3576 OUTPUT:
2689 RETVAL 3577 RETVAL
2690 3578
2691SV * 3579SV *
2692count (SV *self) 3580count (SV *self)
… …
2698void 3586void
2699up (SV *self, int adjust = 1) 3587up (SV *self, int adjust = 1)
2700 ALIAS: 3588 ALIAS:
2701 adjust = 1 3589 adjust = 1
2702 CODE: 3590 CODE:
2703{ 3591 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 3592
2730void 3593void
2731down (SV *self) 3594down (...)
2732 CODE: 3595 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3596 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3597
3598void
3599wait (...)
3600 CODE:
3601 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3602
2735void 3603void
2736try (SV *self) 3604try (SV *self)
2737 PPCODE: 3605 PPCODE:
2738{ 3606{
… …
2750 XSRETURN_NO; 3618 XSRETURN_NO;
2751} 3619}
2752 3620
2753void 3621void
2754waiters (SV *self) 3622waiters (SV *self)
2755 CODE: 3623 PPCODE:
2756{ 3624{
2757 AV *av = (AV *)SvRV (self); 3625 AV *av = (AV *)SvRV (self);
3626 int wcount = AvFILLp (av) + 1 - 1;
2758 3627
2759 if (GIMME_V == G_SCALAR) 3628 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3629 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3630 else
2762 { 3631 {
2763 int i; 3632 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3633 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3634 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3635 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3636 }
2768} 3637}
2769 3638
3639MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3640
3641void
3642_may_delete (SV *sem, int count, int extra_refs)
3643 PPCODE:
3644{
3645 AV *av = (AV *)SvRV (sem);
3646
3647 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3648 && AvFILLp (av) == 0 /* no waiters, just count */
3649 && SvIV (AvARRAY (av)[0]) == count)
3650 XSRETURN_YES;
3651
3652 XSRETURN_NO;
3653}
3654
3655MODULE = Coro::State PACKAGE = Coro::Signal
3656
3657SV *
3658new (SV *klass)
3659 CODE:
3660 RETVAL = sv_bless (
3661 coro_waitarray_new (aTHX_ 0),
3662 GvSTASH (CvGV (cv))
3663 );
3664 OUTPUT:
3665 RETVAL
3666
3667void
3668wait (...)
3669 CODE:
3670 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3671
3672void
3673broadcast (SV *self)
3674 CODE:
3675{
3676 AV *av = (AV *)SvRV (self);
3677 coro_signal_wake (aTHX_ av, AvFILLp (av));
3678}
3679
3680void
3681send (SV *self)
3682 CODE:
3683{
3684 AV *av = (AV *)SvRV (self);
3685
3686 if (AvFILLp (av))
3687 coro_signal_wake (aTHX_ av, 1);
3688 else
3689 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3690}
3691
3692IV
3693awaited (SV *self)
3694 CODE:
3695 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3696 OUTPUT:
3697 RETVAL
3698
3699
3700MODULE = Coro::State PACKAGE = Coro::AnyEvent
3701
3702BOOT:
3703 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3704
3705void
3706_schedule (...)
3707 CODE:
3708{
3709 static int incede;
3710
3711 api_cede_notself (aTHX);
3712
3713 ++incede;
3714 while (coro_nready >= incede && api_cede (aTHX))
3715 ;
3716
3717 sv_setsv (sv_activity, &PL_sv_undef);
3718 if (coro_nready >= incede)
3719 {
3720 PUSHMARK (SP);
3721 PUTBACK;
3722 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3723 }
3724
3725 --incede;
3726}
3727
3728
3729MODULE = Coro::State PACKAGE = Coro::AIO
3730
3731void
3732_register (char *target, char *proto, SV *req)
3733 CODE:
3734{
3735 SV *req_cv = s_get_cv_croak (req);
3736 /* newXSproto doesn't return the CV on 5.8 */
3737 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3738 sv_setpv ((SV *)slf_cv, proto);
3739 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3740}
3741
3742MODULE = Coro::State PACKAGE = Coro::Select
3743
3744void
3745patch_pp_sselect ()
3746 CODE:
3747 if (!coro_old_pp_sselect)
3748 {
3749 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3750 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3751 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3752 }
3753
3754void
3755unpatch_pp_sselect ()
3756 CODE:
3757 if (coro_old_pp_sselect)
3758 {
3759 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3760 coro_old_pp_sselect = 0;
3761 }
3762
3763

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