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Comparing Coro/Coro/State.xs (file contents):
Revision 1.273 by root, Fri Nov 14 23:48:10 2008 UTC vs.
Revision 1.363 by root, Tue Jul 14 00:55:10 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
306 287
307/** lowlevel stuff **********************************************************/ 288/** lowlevel stuff **********************************************************/
308 289
… …
334 get_hv (name, create); 315 get_hv (name, create);
335#endif 316#endif
336 return get_hv (name, create); 317 return get_hv (name, create);
337} 318}
338 319
320INLINE void
321coro_times_update ()
322{
323#ifdef coro_clock_gettime
324 struct timespec ts;
325
326 ts.tv_sec = ts.tv_nsec = 0;
327 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
328 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
329
330 ts.tv_sec = ts.tv_nsec = 0;
331 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
332 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
333#else
334 dTHX;
335 UV tv[2];
336
337 u2time (aTHX_ tv);
338 time_real [0] = tv [0];
339 time_real [1] = tv [1] * 1000;
340#endif
341}
342
343INLINE void
344coro_times_add (struct coro *c)
345{
346 c->t_real [1] += time_real [1];
347 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
348 c->t_real [0] += time_real [0];
349
350 c->t_cpu [1] += time_cpu [1];
351 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
352 c->t_cpu [0] += time_cpu [0];
353}
354
355INLINE void
356coro_times_sub (struct coro *c)
357{
358 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
359 c->t_real [1] -= time_real [1];
360 c->t_real [0] -= time_real [0];
361
362 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
363 c->t_cpu [1] -= time_cpu [1];
364 c->t_cpu [0] -= time_cpu [0];
365}
366
367/*****************************************************************************/
368/* magic glue */
369
370#define CORO_MAGIC_type_cv 26
371#define CORO_MAGIC_type_state PERL_MAGIC_ext
372
373#define CORO_MAGIC_NN(sv, type) \
374 (expect_true (SvMAGIC (sv)->mg_type == type) \
375 ? SvMAGIC (sv) \
376 : mg_find (sv, type))
377
378#define CORO_MAGIC(sv, type) \
379 (expect_true (SvMAGIC (sv)) \
380 ? CORO_MAGIC_NN (sv, type) \
381 : 0)
382
383#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
384#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
385
386INLINE struct coro *
387SvSTATE_ (pTHX_ SV *coro)
388{
389 HV *stash;
390 MAGIC *mg;
391
392 if (SvROK (coro))
393 coro = SvRV (coro);
394
395 if (expect_false (SvTYPE (coro) != SVt_PVHV))
396 croak ("Coro::State object required");
397
398 stash = SvSTASH (coro);
399 if (expect_false (stash != coro_stash && stash != coro_state_stash))
400 {
401 /* very slow, but rare, check */
402 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
403 croak ("Coro::State object required");
404 }
405
406 mg = CORO_MAGIC_state (coro);
407 return (struct coro *)mg->mg_ptr;
408}
409
410#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
411
412/* faster than SvSTATE, but expects a coroutine hv */
413#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
414#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
415
416/*****************************************************************************/
417/* padlist management and caching */
418
339static AV * 419static AV *
340coro_clone_padlist (pTHX_ CV *cv) 420coro_derive_padlist (pTHX_ CV *cv)
341{ 421{
342 AV *padlist = CvPADLIST (cv); 422 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 423 AV *newpadlist, *newpad;
344 424
345 newpadlist = newAV (); 425 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 430 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 431#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 432 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 433 --AvFILLp (padlist);
354 434
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 435 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 436 av_store (newpadlist, 1, (SV *)newpad);
357 437
358 return newpadlist; 438 return newpadlist;
359} 439}
360 440
361static void 441static void
362free_padlist (pTHX_ AV *padlist) 442free_padlist (pTHX_ AV *padlist)
363{ 443{
364 /* may be during global destruction */ 444 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 445 if (!IN_DESTRUCT)
366 { 446 {
367 I32 i = AvFILLp (padlist); 447 I32 i = AvFILLp (padlist);
368 while (i >= 0) 448
449 while (i > 0) /* special-case index 0 */
369 { 450 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 451 /* we try to be extra-careful here */
371 if (svp) 452 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 453 I32 j = AvFILLp (av);
373 SV *sv; 454
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 455 while (j >= 0)
456 SvREFCNT_dec (AvARRAY (av)[j--]);
457
458 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 459 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 460 }
380 461
462 SvREFCNT_dec (AvARRAY (padlist)[0]);
463
464 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 465 SvREFCNT_dec ((SV*)padlist);
382 } 466 }
383} 467}
384 468
385static int 469static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 470coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 471{
388 AV *padlist; 472 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 473 AV *av = (AV *)mg->mg_obj;
474
475 /* perl manages to free our internal AV and _then_ call us */
476 if (IN_DESTRUCT)
477 return 0;
390 478
391 /* casting is fun. */ 479 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 480 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 481 free_padlist (aTHX_ padlist);
394 482
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 483 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 484
397 return 0; 485 return 0;
398} 486}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 487
403static MGVTBL coro_cv_vtbl = { 488static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 489 0, 0, 0, 0,
405 coro_cv_free 490 coro_cv_free
406}; 491};
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))
443 492
444/* the next two functions merely cache the padlists */ 493/* the next two functions merely cache the padlists */
445static void 494static void
446get_padlist (pTHX_ CV *cv) 495get_padlist (pTHX_ CV *cv)
447{ 496{
… …
453 else 502 else
454 { 503 {
455#if CORO_PREFER_PERL_FUNCTIONS 504#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 505 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 506 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 507 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 508 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 509 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 510 SvREFCNT_dec (cp);
462#else 511#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 512 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 513#endif
465 } 514 }
466} 515}
467 516
468static void 517static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 524 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 525
477 av = (AV *)mg->mg_obj; 526 av = (AV *)mg->mg_obj;
478 527
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 528 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 529 av_extend (av, AvFILLp (av) + 1);
481 530
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 531 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 532}
484 533
485/** load & save, init *******************************************************/ 534/** load & save, init *******************************************************/
535
536static void
537on_enterleave_call (pTHX_ SV *cb);
486 538
487static void 539static void
488load_perl (pTHX_ Coro__State c) 540load_perl (pTHX_ Coro__State c)
489{ 541{
490 perl_slots *slot = c->slot; 542 perl_slots *slot = c->slot;
491 c->slot = 0; 543 c->slot = 0;
492 544
493 PL_mainstack = c->mainstack; 545 PL_mainstack = c->mainstack;
494 546
495 GvSV (PL_defgv) = slot->defsv; 547 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 548 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 549 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 550 GvSV (irsgv) = slot->irsgv;
551 GvHV (PL_hintgv) = slot->hinthv;
499 552
500 #define VAR(name,type) PL_ ## name = slot->name; 553 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 554 # include "state.h"
502 #undef VAR 555 #undef VAR
503 556
… …
515 } 568 }
516 569
517 PUTBACK; 570 PUTBACK;
518 } 571 }
519 572
520 slf_frame = c->slf_frame; 573 slf_frame = c->slf_frame;
574 CORO_THROW = c->except;
575
576 if (expect_false (enable_times))
577 {
578 if (expect_false (!times_valid))
579 coro_times_update ();
580
581 coro_times_sub (c);
582 }
583
584 if (expect_false (c->on_enter))
585 {
586 int i;
587
588 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
589 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
590 }
521} 591}
522 592
523static void 593static void
524save_perl (pTHX_ Coro__State c) 594save_perl (pTHX_ Coro__State c)
525{ 595{
596 if (expect_false (c->on_leave))
597 {
598 int i;
599
600 for (i = AvFILLp (c->on_leave); i >= 0; --i)
601 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
602 }
603
604 times_valid = 0;
605
606 if (expect_false (enable_times))
607 {
608 coro_times_update (); times_valid = 1;
609 coro_times_add (c);
610 }
611
612 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 613 c->slf_frame = slf_frame;
527 614
528 { 615 {
529 dSP; 616 dSP;
530 I32 cxix = cxstack_ix; 617 I32 cxix = cxstack_ix;
… …
542 { 629 {
543 while (expect_true (cxix >= 0)) 630 while (expect_true (cxix >= 0))
544 { 631 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 632 PERL_CONTEXT *cx = &ccstk[cxix--];
546 633
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 634 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 635 {
549 CV *cv = cx->blk_sub.cv; 636 CV *cv = cx->blk_sub.cv;
550 637
551 if (expect_true (CvDEPTH (cv))) 638 if (expect_true (CvDEPTH (cv)))
552 { 639 {
… …
576 /* we manually unroll here, as usually 2 slots is enough */ 663 /* we manually unroll here, as usually 2 slots is enough */
577 if (SLOT_COUNT >= 1) CXINC; 664 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC; 665 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC; 666 if (SLOT_COUNT >= 3) CXINC;
580 { 667 {
581 int i; 668 unsigned int i;
582 for (i = 3; i < SLOT_COUNT; ++i) 669 for (i = 3; i < SLOT_COUNT; ++i)
583 CXINC; 670 CXINC;
584 } 671 }
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 672 cxstack_ix -= SLOT_COUNT; /* undo allocation */
586 673
587 c->mainstack = PL_mainstack; 674 c->mainstack = PL_mainstack;
588 675
589 { 676 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 677 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 678
592 slot->defav = GvAV (PL_defgv); 679 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 680 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 681 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 682 slot->irsgv = GvSV (irsgv);
683 slot->hinthv = GvHV (PL_hintgv);
596 684
597 #define VAR(name,type) slot->name = PL_ ## name; 685 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 686 # include "state.h"
599 #undef VAR 687 #undef VAR
600 } 688 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 693 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 694 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 695 * not usually need a lot of stackspace.
608 */ 696 */
609#if CORO_PREFER_PERL_FUNCTIONS 697#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 698# define coro_init_stacks(thx) init_stacks ()
611#else 699#else
612static void 700static void
613coro_init_stacks (pTHX) 701coro_init_stacks (pTHX)
614{ 702{
615 PL_curstackinfo = new_stackinfo(32, 8); 703 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 766#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 767 Safefree (PL_retstack);
680#endif 768#endif
681} 769}
682 770
771#define CORO_RSS \
772 rss += sizeof (SYM (curstackinfo)); \
773 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
774 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
775 rss += SYM (tmps_max) * sizeof (SV *); \
776 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
777 rss += SYM (scopestack_max) * sizeof (I32); \
778 rss += SYM (savestack_max) * sizeof (ANY);
779
683static size_t 780static size_t
684coro_rss (pTHX_ struct coro *coro) 781coro_rss (pTHX_ struct coro *coro)
685{ 782{
686 size_t rss = sizeof (*coro); 783 size_t rss = sizeof (*coro);
687 784
688 if (coro->mainstack) 785 if (coro->mainstack)
689 { 786 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 787 if (coro->flags & CF_RUNNING)
694 { 788 {
695 slot = &tmp_slot; 789 #define SYM(sym) PL_ ## sym
696 790 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 791 #undef SYM
700 } 792 }
701 else 793 else
702 slot = coro->slot;
703
704 if (slot)
705 { 794 {
706 rss += sizeof (slot->curstackinfo); 795 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 796 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 797 #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 } 798 }
718 } 799 }
719 800
720 return rss; 801 return rss;
721} 802}
… …
734#endif 815#endif
735 816
736/* 817/*
737 * This overrides the default magic get method of %SIG elements. 818 * 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 819 * 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 820 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 821 * 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 */ 822 */
745static int 823static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 824coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 825{
748 const char *s = MgPV_nolen_const (mg); 826 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 879 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 880
803 if (svp) 881 if (svp)
804 { 882 {
805 SV *old = *svp; 883 SV *old = *svp;
806 *svp = newSVsv (sv); 884 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 885 SvREFCNT_dec (old);
808 return 0; 886 return 0;
809 } 887 }
810 } 888 }
811 889
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 890 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 891}
814 892
815static void 893static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 894prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 895{
818 /* kind of mega-hacky, but works */ 896 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 897 ta->next = ta->prev = (struct coro *)ta;
820} 898}
821 899
822static int 900static int
823slf_check_nop (aTHX) 901slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 902{
825 return 0; 903 return 0;
826} 904}
827 905
828static void 906static int
907slf_check_repeat (pTHX_ struct CoroSLF *frame)
908{
909 return 1;
910}
911
912static UNOP coro_setup_op;
913
914static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 915coro_setup (pTHX_ struct coro *coro)
830{ 916{
831 /* 917 /*
832 * emulate part of the perl startup here. 918 * emulate part of the perl startup here.
833 */ 919 */
… …
835 921
836 PL_runops = RUNOPS_DEFAULT; 922 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 923 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 924 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 925 PL_comppad = 0;
926 PL_comppad_name = 0;
927 PL_comppad_name_fill = 0;
928 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 929 PL_curpm = 0;
841 PL_curpad = 0; 930 PL_curpad = 0;
842 PL_localizing = 0; 931 PL_localizing = 0;
843 PL_dirty = 0; 932 PL_dirty = 0;
844 PL_restartop = 0; 933 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 934#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 935 PL_parser = 0;
847#endif 936#endif
937 PL_hints = 0;
848 938
849 /* recreate the die/warn hooks */ 939 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 940 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); 941 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 942
853 GvSV (PL_defgv) = newSV (0); 943 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 944 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 945 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 946 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
947 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 948 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 949 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 950
860 { 951 {
861 dSP; 952 dSP;
862 UNOP myop; 953 UNOP myop;
863 954
864 Zero (&myop, 1, UNOP); 955 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 956 myop.op_next = Nullop;
957 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 958 myop.op_flags = OPf_WANT_VOID;
867 959
868 PUSHMARK (SP); 960 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 961 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 962 PUTBACK;
871 PL_op = (OP *)&myop; 963 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 964 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 965 }
875 966
876 /* this newly created coroutine might be run on an existing cctx which most 967 /* 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. 968 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 969 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 970 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 */ 971 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 972
973 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974 coro_setup_op.op_next = PL_op;
975 coro_setup_op.op_type = OP_ENTERSUB;
976 coro_setup_op.op_ppaddr = pp_slf;
977 /* no flags etc. required, as an init function won't be called */
978
979 PL_op = (OP *)&coro_setup_op;
980
981 /* copy throw, in case it was set before coro_setup */
982 CORO_THROW = coro->except;
983
984 if (expect_false (enable_times))
985 {
986 coro_times_update ();
987 coro_times_sub (coro);
988 }
989}
990
883static void 991static void
884coro_destruct (pTHX_ struct coro *coro) 992coro_unwind_stacks (pTHX)
885{ 993{
886 if (!IN_DESTRUCT) 994 if (!IN_DESTRUCT)
887 { 995 {
888 /* restore all saved variables and stuff */ 996 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 997 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1005 POPSTACK_TO (PL_mainstack);
898 1006
899 /* unwind main stack */ 1007 /* unwind main stack */
900 dounwind (-1); 1008 dounwind (-1);
901 } 1009 }
1010}
902 1011
903 SvREFCNT_dec (GvSV (PL_defgv)); 1012static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1013coro_destruct_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1014{
906 SvREFCNT_dec (PL_defoutgv); 1015 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1016
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1017 {
1018 struct coro *current = SvSTATE_current;
1019
1020 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1021
1022 save_perl (aTHX_ current);
1023 load_perl (aTHX_ coro);
1024
1025 coro_unwind_stacks (aTHX);
1026 coro_destruct_stacks (aTHX);
1027
1028 // now save some sv's to be free'd later
1029 svf [0] = GvSV (PL_defgv);
1030 svf [1] = (SV *)GvAV (PL_defgv);
1031 svf [2] = GvSV (PL_errgv);
1032 svf [3] = (SV *)PL_defoutgv;
1033 svf [4] = PL_rs;
1034 svf [5] = GvSV (irsgv);
1035 svf [6] = (SV *)GvHV (PL_hintgv);
1036 svf [7] = PL_diehook;
1037 svf [8] = PL_warnhook;
1038 assert (9 == sizeof (svf) / sizeof (*svf));
1039
1040 load_perl (aTHX_ current);
1041 }
1042
1043 {
1044 unsigned int i;
1045
1046 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1047 SvREFCNT_dec (svf [i]);
1048
913 SvREFCNT_dec (coro->saved_deffh); 1049 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1050 SvREFCNT_dec (coro->rouse_cb);
915 1051 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1052 SvREFCNT_dec (coro->invoke_av);
1053 }
917} 1054}
918 1055
919INLINE void 1056INLINE void
920free_coro_mortal (pTHX) 1057free_coro_mortal (pTHX)
921{ 1058{
… …
929static int 1066static int
930runops_trace (pTHX) 1067runops_trace (pTHX)
931{ 1068{
932 COP *oldcop = 0; 1069 COP *oldcop = 0;
933 int oldcxix = -2; 1070 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1071
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1072 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1073 {
939 PERL_ASYNC_CHECK (); 1074 PERL_ASYNC_CHECK ();
940 1075
941 if (cctx->flags & CC_TRACE_ALL) 1076 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1077 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1078 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1079 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1080 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1081 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1082 AV *av = newAV (); /* return values */
948 SV **cb; 1083 SV **cb;
… …
985 1120
986 if (PL_curcop != &PL_compiling) 1121 if (PL_curcop != &PL_compiling)
987 { 1122 {
988 SV **cb; 1123 SV **cb;
989 1124
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1125 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1126 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1127 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1128
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1129 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1130 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1131 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1132 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1133 SV *fullname = sv_2mortal (newSV (0));
1000 1134
1001 if (isGV (gv)) 1135 if (isGV (gv))
… …
1006 SAVETMPS; 1140 SAVETMPS;
1007 EXTEND (SP, 3); 1141 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1142 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1143 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1144 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1145 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1146 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1147 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); 1148 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1149 SPAGAIN;
1016 FREETMPS; 1150 FREETMPS;
… …
1019 } 1153 }
1020 1154
1021 oldcxix = cxstack_ix; 1155 oldcxix = cxstack_ix;
1022 } 1156 }
1023 1157
1024 if (cctx->flags & CC_TRACE_LINE) 1158 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1159 {
1026 dSP; 1160 dSP;
1027 1161
1028 PL_runops = RUNOPS_DEFAULT; 1162 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1163 ENTER;
… …
1048 1182
1049 TAINT_NOT; 1183 TAINT_NOT;
1050 return 0; 1184 return 0;
1051} 1185}
1052 1186
1187static struct CoroSLF cctx_ssl_frame;
1188
1053static void 1189static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1190slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1191{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1192 ta->prev = 0;
1058} 1193}
1059 1194
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1195static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1196slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1197{
1063/* also initialises PL_top_env */ 1198 *frame = cctx_ssl_frame;
1199
1200 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1201}
1202
1203/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1204static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1205cctx_prepare (pTHX)
1066{ 1206{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1207 PL_top_env = &PL_start_env;
1071 1208
1072 if (cctx->flags & CC_TRACE) 1209 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1210 PL_runops = runops_trace;
1074 1211
1075 Zero (&myop, 1, UNOP); 1212 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1213 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1214 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1215 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1216
1079 PUSHMARK (SP); 1217 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1218 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1219
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1220 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1221 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1222}
1088 1223
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1224/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1225INLINE void
1091transfer_tail (pTHX) 1226transfer_tail (pTHX)
1092{ 1227{
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); 1228 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} 1229}
1109 1230
1110/* 1231/*
1111 * this is a _very_ stripped down perl interpreter ;) 1232 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1233 */
… …
1124 /* normally we would need to skip the entersub here */ 1245 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1246 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1247 /* PL_nop = PL_nop->op_next */
1127 1248
1128 /* inject a fake subroutine call to cctx_init */ 1249 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1250 cctx_prepare (aTHX);
1130 1251
1131 /* cctx_run is the alternative tail of transfer() */ 1252 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1253 transfer_tail (aTHX);
1134 1254
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1255 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1256 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1257 perl_run (PL_curinterp);
1258 /*
1259 * Unfortunately, there is no way to get at the return values of the
1260 * coro body here, as perl_run destroys these
1261 */
1138 1262
1139 /* 1263 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1264 * 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) 1265 * 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 1266 * 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" 1267 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1268 * coroutine as Coro has no such concept.
1269 * This actually isn't valid with the pthread backend, but OSes requiring
1270 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1271 */
1146 PL_top_env = main_top_env; 1272 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1273 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1274 }
1149} 1275}
… …
1226cctx_destroy (coro_cctx *cctx) 1352cctx_destroy (coro_cctx *cctx)
1227{ 1353{
1228 if (!cctx) 1354 if (!cctx)
1229 return; 1355 return;
1230 1356
1357 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1358
1231 --cctx_count; 1359 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1360 coro_destroy (&cctx->cctx);
1233 1361
1234 /* coro_transfer creates new, empty cctx's */ 1362 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1363 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1421/** coroutine switching *****************************************************/
1294 1422
1295static void 1423static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1424transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1425{
1426 /* TODO: throwing up here is considered harmful */
1427
1298 if (expect_true (prev != next)) 1428 if (expect_true (prev != next))
1299 { 1429 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1430 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,"); 1431 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1432
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)) 1433 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,"); 1434 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1435
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1436#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1437 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,"); 1438 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1439#endif
1313 } 1440 }
1314} 1441}
1315 1442
1316/* always use the TRANSFER macro */ 1443/* always use the TRANSFER macro */
1317static void NOINLINE 1444static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1445transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1446{
1320 dSTACKLEVEL; 1447 dSTACKLEVEL;
1321 1448
1322 /* sometimes transfer is only called to set idle_sp */ 1449 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1450 if (expect_false (!prev))
1324 { 1451 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1452 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1453 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1454 }
1328 else if (expect_true (prev != next)) 1455 else if (expect_true (prev != next))
1329 { 1456 {
1330 coro_cctx *prev__cctx; 1457 coro_cctx *cctx_prev;
1331 1458
1332 if (expect_false (prev->flags & CF_NEW)) 1459 if (expect_false (prev->flags & CF_NEW))
1333 { 1460 {
1334 /* create a new empty/source context */ 1461 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1462 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1463 prev->flags |= CF_RUNNING;
1338 } 1464 }
1339 1465
1340 prev->flags &= ~CF_RUNNING; 1466 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1467 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1468
1345 /* first get rid of the old state */ 1469 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1470 save_perl (aTHX_ prev);
1347 1471
1348 if (expect_false (next->flags & CF_NEW)) 1472 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1477 coro_setup (aTHX_ next);
1354 } 1478 }
1355 else 1479 else
1356 load_perl (aTHX_ next); 1480 load_perl (aTHX_ next);
1357 1481
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1482 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1483 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1484 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1485 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1486 && !force_cctx
1365 )) 1487 ))
1366 { 1488 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1489 /* 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)); 1490 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1491
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 */ 1492 /* 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 */ 1493 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1494 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1495 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1496 next->cctx = cctx_get (aTHX);
1377 1497
1378 cctx_put (prev__cctx); 1498 cctx_put (cctx_current);
1379 } 1499 }
1500 else
1501 prev->cctx = cctx_current;
1380 1502
1381 ++next->usecount; 1503 ++next->usecount;
1382 1504
1383 if (expect_true (!next->cctx)) 1505 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1506 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1507
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1508 next->cctx = 0;
1387 transfer_next = next;
1388 1509
1389 if (expect_false (prev__cctx != next->cctx)) 1510 if (expect_false (cctx_prev != cctx_current))
1390 { 1511 {
1391 prev__cctx->top_env = PL_top_env; 1512 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1513 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1514 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1515 }
1395 1516
1396 transfer_tail (aTHX); 1517 transfer_tail (aTHX);
1397 } 1518 }
1398} 1519}
… …
1405static int 1526static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1527coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1528{
1408 if (coro->flags & CF_DESTROYED) 1529 if (coro->flags & CF_DESTROYED)
1409 return 0; 1530 return 0;
1531
1532 if (coro->on_destroy && !PL_dirty)
1533 coro->on_destroy (aTHX_ coro);
1410 1534
1411 coro->flags |= CF_DESTROYED; 1535 coro->flags |= CF_DESTROYED;
1412 1536
1413 if (coro->flags & CF_READY) 1537 if (coro->flags & CF_READY)
1414 { 1538 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1539 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1540 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1541 --coro_nready;
1419 UNLOCK;
1420 } 1542 }
1421 else 1543 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1544 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1545
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1546 if (coro->mainstack
1425 { 1547 && coro->mainstack != main_mainstack
1426 struct coro temp; 1548 && coro->slot
1427 1549 && !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); 1550 coro_destruct_perl (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439 1551
1440 cctx_destroy (coro->cctx); 1552 cctx_destroy (coro->cctx);
1553 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1554 SvREFCNT_dec (coro->args);
1555 SvREFCNT_dec (CORO_THROW);
1442 1556
1443 if (coro->next) coro->next->prev = coro->prev; 1557 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1558 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1559 if (coro == coro_first) coro_first = coro->next;
1446 1560
… …
1502 TRANSFER (ta, 1); 1616 TRANSFER (ta, 1);
1503} 1617}
1504 1618
1505/** Coro ********************************************************************/ 1619/** Coro ********************************************************************/
1506 1620
1507static void 1621INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1622coro_enq (pTHX_ struct coro *coro)
1509{ 1623{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1624 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1625
1513static SV * 1626 SvREFCNT_inc_NN (coro->hv);
1627
1628 coro->next_ready = 0;
1629 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1630 ready [1] = coro;
1631}
1632
1633INLINE struct coro *
1514coro_deq (pTHX) 1634coro_deq (pTHX)
1515{ 1635{
1516 int prio; 1636 int prio;
1517 1637
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1638 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1639 {
1520 return av_shift (coro_ready [prio]); 1640 struct coro **ready = coro_ready [prio];
1641
1642 if (ready [0])
1643 {
1644 struct coro *coro = ready [0];
1645 ready [0] = coro->next_ready;
1646 return coro;
1647 }
1648 }
1521 1649
1522 return 0; 1650 return 0;
1523} 1651}
1524 1652
1525static int 1653static int
… …
1527{ 1655{
1528 struct coro *coro; 1656 struct coro *coro;
1529 SV *sv_hook; 1657 SV *sv_hook;
1530 void (*xs_hook)(void); 1658 void (*xs_hook)(void);
1531 1659
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1660 coro = SvSTATE (coro_sv);
1536 1661
1537 if (coro->flags & CF_READY) 1662 if (coro->flags & CF_READY)
1538 return 0; 1663 return 0;
1539 1664
1540 coro->flags |= CF_READY; 1665 coro->flags |= CF_READY;
1541 1666
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1667 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1668 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1669
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1670 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1671 ++coro_nready;
1549 1672
1550 UNLOCK;
1551
1552 if (sv_hook) 1673 if (sv_hook)
1553 { 1674 {
1554 dSP; 1675 dSP;
1555 1676
1556 ENTER; 1677 ENTER;
1557 SAVETMPS; 1678 SAVETMPS;
1558 1679
1559 PUSHMARK (SP); 1680 PUSHMARK (SP);
1560 PUTBACK; 1681 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1682 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1683
1564 FREETMPS; 1684 FREETMPS;
1565 LEAVE; 1685 LEAVE;
1566 } 1686 }
1567 1687
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1695api_is_ready (pTHX_ SV *coro_sv)
1576{ 1696{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1697 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1698}
1579 1699
1700/* expects to own a reference to next->hv */
1580INLINE void 1701INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1702prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1703{
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); 1704 SV *prev_sv = SvRV (coro_current);
1705
1627 ta->prev = SvSTATE (prev_sv); 1706 ta->prev = SvSTATE_hv (prev_sv);
1707 ta->next = next;
1708
1628 TRANSFER_CHECK (*ta); 1709 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1710
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1711 SvRV_set (coro_current, (SV *)next->hv);
1632 1712
1633 LOCK;
1634 free_coro_mortal (aTHX); 1713 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1714 coro_mortal = prev_sv;
1636 UNLOCK; 1715}
1716
1717static void
1718prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1719{
1720 for (;;)
1721 {
1722 struct coro *next = coro_deq (aTHX);
1723
1724 if (expect_true (next))
1725 {
1726 /* cannot transfer to destroyed coros, skip and look for next */
1727 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1728 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1729 else
1730 {
1731 next->flags &= ~CF_READY;
1732 --coro_nready;
1733
1734 prepare_schedule_to (aTHX_ ta, next);
1735 break;
1736 }
1737 }
1738 else
1739 {
1740 /* nothing to schedule: call the idle handler */
1741 if (SvROK (sv_idle)
1742 && SvOBJECT (SvRV (sv_idle)))
1743 {
1744 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1745 api_ready (aTHX_ SvRV (sv_idle));
1746 --coro_nready;
1747 }
1748 else
1749 {
1750 dSP;
1751
1752 ENTER;
1753 SAVETMPS;
1754
1755 PUSHMARK (SP);
1756 PUTBACK;
1757 call_sv (sv_idle, G_VOID | G_DISCARD);
1758
1759 FREETMPS;
1760 LEAVE;
1761 }
1762 }
1763 }
1637} 1764}
1638 1765
1639INLINE void 1766INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1767prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1768{
… …
1662{ 1789{
1663 struct coro_transfer_args ta; 1790 struct coro_transfer_args ta;
1664 1791
1665 prepare_schedule (aTHX_ &ta); 1792 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1793 TRANSFER (ta, 1);
1794}
1795
1796static void
1797api_schedule_to (pTHX_ SV *coro_sv)
1798{
1799 struct coro_transfer_args ta;
1800 struct coro *next = SvSTATE (coro_sv);
1801
1802 SvREFCNT_inc_NN (coro_sv);
1803 prepare_schedule_to (aTHX_ &ta, next);
1667} 1804}
1668 1805
1669static int 1806static int
1670api_cede (pTHX) 1807api_cede (pTHX)
1671{ 1808{
… …
1700static void 1837static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1838api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1839{
1703 struct coro *coro = SvSTATE (coro_sv); 1840 struct coro *coro = SvSTATE (coro_sv);
1704 1841
1842 if (coro->flags & CF_RUNNING)
1843 croak ("cannot enable tracing on a running coroutine, caught");
1844
1705 if (flags & CC_TRACE) 1845 if (flags & CC_TRACE)
1706 { 1846 {
1707 if (!coro->cctx) 1847 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1848 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1849 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1850 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1851
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1852 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1853 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1854 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1855 {
… …
1720 else 1860 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1861 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1862 }
1723} 1863}
1724 1864
1725#if 0 1865static void
1866coro_call_on_destroy (pTHX_ struct coro *coro)
1867{
1868 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1869 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1870
1871 if (on_destroyp)
1872 {
1873 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1874
1875 while (AvFILLp (on_destroy) >= 0)
1876 {
1877 dSP; /* don't disturb outer sp */
1878 SV *cb = av_pop (on_destroy);
1879
1880 PUSHMARK (SP);
1881
1882 if (statusp)
1883 {
1884 int i;
1885 AV *status = (AV *)SvRV (*statusp);
1886 EXTEND (SP, AvFILLp (status) + 1);
1887
1888 for (i = 0; i <= AvFILLp (status); ++i)
1889 PUSHs (AvARRAY (status)[i]);
1890 }
1891
1892 PUTBACK;
1893 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1894 }
1895 }
1896}
1897
1898static void
1899slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1900{
1901 int i;
1902 HV *hv = (HV *)SvRV (coro_current);
1903 AV *av = newAV ();
1904
1905 av_extend (av, items - 1);
1906 for (i = 0; i < items; ++i)
1907 av_push (av, SvREFCNT_inc_NN (arg [i]));
1908
1909 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1910
1911 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1912 api_ready (aTHX_ sv_manager);
1913
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_repeat;
1916
1917 /* as a minor optimisation, we could unwind all stacks here */
1918 /* but that puts extra pressure on pp_slf, and is not worth much */
1919 /*coro_unwind_stacks (aTHX);*/
1920}
1921
1922/*****************************************************************************/
1923/* async pool handler */
1924
1726static int 1925static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1926slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1927{
1729 AV *padlist; 1928 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1929 struct coro *coro = (struct coro *)frame->data;
1731 1930
1732 abort (); 1931 if (!coro->invoke_cb)
1932 return 1; /* loop till we have invoke */
1933 else
1934 {
1935 hv_store (hv, "desc", sizeof ("desc") - 1,
1936 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1937
1938 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1939
1940 {
1941 dSP;
1942 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1943 PUTBACK;
1944 }
1945
1946 SvREFCNT_dec (GvAV (PL_defgv));
1947 GvAV (PL_defgv) = coro->invoke_av;
1948 coro->invoke_av = 0;
1949
1950 return 0;
1951 }
1952}
1953
1954static void
1955slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1956{
1957 HV *hv = (HV *)SvRV (coro_current);
1958 struct coro *coro = SvSTATE_hv ((SV *)hv);
1959
1960 if (expect_true (coro->saved_deffh))
1961 {
1962 /* subsequent iteration */
1963 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1964 coro->saved_deffh = 0;
1965
1966 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1967 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1968 {
1969 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1970 coro->invoke_av = newAV ();
1971
1972 frame->prepare = prepare_nop;
1973 }
1974 else
1975 {
1976 av_clear (GvAV (PL_defgv));
1977 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1978
1979 coro->prio = 0;
1980
1981 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1982 api_trace (aTHX_ coro_current, 0);
1983
1984 frame->prepare = prepare_schedule;
1985 av_push (av_async_pool, SvREFCNT_inc (hv));
1986 }
1987 }
1988 else
1989 {
1990 /* first iteration, simply fall through */
1991 frame->prepare = prepare_nop;
1992 }
1993
1994 frame->check = slf_check_pool_handler;
1995 frame->data = (void *)coro;
1996}
1997
1998/*****************************************************************************/
1999/* rouse callback */
2000
2001#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2002
2003static void
2004coro_rouse_callback (pTHX_ CV *cv)
2005{
2006 dXSARGS;
2007 SV *data = (SV *)S_GENSUB_ARG;
2008
2009 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2010 {
2011 /* first call, set args */
2012 SV *coro = SvRV (data);
2013 AV *av = newAV ();
2014
2015 SvRV_set (data, (SV *)av);
2016
2017 /* better take a full copy of the arguments */
2018 while (items--)
2019 av_store (av, items, newSVsv (ST (items)));
2020
2021 api_ready (aTHX_ coro);
2022 SvREFCNT_dec (coro);
2023 }
2024
2025 XSRETURN_EMPTY;
2026}
2027
2028static int
2029slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2030{
2031 SV *data = (SV *)frame->data;
2032
2033 if (CORO_THROW)
2034 return 0;
2035
2036 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2037 return 1;
2038
2039 /* now push all results on the stack */
2040 {
2041 dSP;
2042 AV *av = (AV *)SvRV (data);
2043 int i;
2044
2045 EXTEND (SP, AvFILLp (av) + 1);
2046 for (i = 0; i <= AvFILLp (av); ++i)
2047 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2048
2049 /* we have stolen the elements, so set length to zero and free */
2050 AvFILLp (av) = -1;
2051 av_undef (av);
2052
2053 PUTBACK;
2054 }
1733 2055
1734 return 0; 2056 return 0;
1735} 2057}
1736 2058
1737static MGVTBL coro_gensub_vtbl = { 2059static void
1738 0, 0, 0, 0, 2060slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2061{
1740}; 2062 SV *cb;
1741#endif 2063
2064 if (items)
2065 cb = arg [0];
2066 else
2067 {
2068 struct coro *coro = SvSTATE_current;
2069
2070 if (!coro->rouse_cb)
2071 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2072
2073 cb = sv_2mortal (coro->rouse_cb);
2074 coro->rouse_cb = 0;
2075 }
2076
2077 if (!SvROK (cb)
2078 || SvTYPE (SvRV (cb)) != SVt_PVCV
2079 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2080 croak ("Coro::rouse_wait called with illegal callback argument,");
2081
2082 {
2083 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2084 SV *data = (SV *)S_GENSUB_ARG;
2085
2086 frame->data = (void *)data;
2087 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2088 frame->check = slf_check_rouse_wait;
2089 }
2090}
2091
2092static SV *
2093coro_new_rouse_cb (pTHX)
2094{
2095 HV *hv = (HV *)SvRV (coro_current);
2096 struct coro *coro = SvSTATE_hv (hv);
2097 SV *data = newRV_inc ((SV *)hv);
2098 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2099
2100 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2101 SvREFCNT_dec (data); /* magicext increases the refcount */
2102
2103 SvREFCNT_dec (coro->rouse_cb);
2104 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2105
2106 return cb;
2107}
2108
2109/*****************************************************************************/
2110/* schedule-like-function opcode (SLF) */
2111
2112static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2113static const CV *slf_cv;
2114static SV **slf_argv;
2115static int slf_argc, slf_arga; /* count, allocated */
2116static I32 slf_ax; /* top of stack, for restore */
2117
2118/* this restores the stack in the case we patched the entersub, to */
2119/* recreate the stack frame as perl will on following calls */
2120/* since entersub cleared the stack */
2121static OP *
2122pp_restore (pTHX)
2123{
2124 int i;
2125 SV **SP = PL_stack_base + slf_ax;
2126
2127 PUSHMARK (SP);
2128
2129 EXTEND (SP, slf_argc + 1);
2130
2131 for (i = 0; i < slf_argc; ++i)
2132 PUSHs (sv_2mortal (slf_argv [i]));
2133
2134 PUSHs ((SV *)CvGV (slf_cv));
2135
2136 RETURNOP (slf_restore.op_first);
2137}
2138
2139static void
2140slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2141{
2142 SV **arg = (SV **)slf_frame.data;
2143
2144 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2145}
2146
2147static void
2148slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 if (items != 2)
2151 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2152
2153 frame->prepare = slf_prepare_transfer;
2154 frame->check = slf_check_nop;
2155 frame->data = (void *)arg; /* let's hope it will stay valid */
2156}
2157
2158static void
2159slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2160{
2161 frame->prepare = prepare_schedule;
2162 frame->check = slf_check_nop;
2163}
2164
2165static void
2166slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2167{
2168 struct coro *next = (struct coro *)slf_frame.data;
2169
2170 SvREFCNT_inc_NN (next->hv);
2171 prepare_schedule_to (aTHX_ ta, next);
2172}
2173
2174static void
2175slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 if (!items)
2178 croak ("Coro::schedule_to expects a coroutine argument, caught");
2179
2180 frame->data = (void *)SvSTATE (arg [0]);
2181 frame->prepare = slf_prepare_schedule_to;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2187{
2188 api_ready (aTHX_ SvRV (coro_current));
2189
2190 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2191}
2192
2193static void
2194slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2195{
2196 frame->prepare = prepare_cede;
2197 frame->check = slf_check_nop;
2198}
2199
2200static void
2201slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2202{
2203 frame->prepare = prepare_cede_notself;
2204 frame->check = slf_check_nop;
2205}
2206
2207/*
2208 * these not obviously related functions are all rolled into one
2209 * function to increase chances that they all will call transfer with the same
2210 * stack offset
2211 * SLF stands for "schedule-like-function".
2212 */
2213static OP *
2214pp_slf (pTHX)
2215{
2216 I32 checkmark; /* mark SP to see how many elements check has pushed */
2217
2218 /* set up the slf frame, unless it has already been set-up */
2219 /* the latter happens when a new coro has been started */
2220 /* or when a new cctx was attached to an existing coroutine */
2221 if (expect_true (!slf_frame.prepare))
2222 {
2223 /* first iteration */
2224 dSP;
2225 SV **arg = PL_stack_base + TOPMARK + 1;
2226 int items = SP - arg; /* args without function object */
2227 SV *gv = *sp;
2228
2229 /* do a quick consistency check on the "function" object, and if it isn't */
2230 /* for us, divert to the real entersub */
2231 if (SvTYPE (gv) != SVt_PVGV
2232 || !GvCV (gv)
2233 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2234 return PL_ppaddr[OP_ENTERSUB](aTHX);
2235
2236 if (!(PL_op->op_flags & OPf_STACKED))
2237 {
2238 /* ampersand-form of call, use @_ instead of stack */
2239 AV *av = GvAV (PL_defgv);
2240 arg = AvARRAY (av);
2241 items = AvFILLp (av) + 1;
2242 }
2243
2244 /* now call the init function, which needs to set up slf_frame */
2245 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2246 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2247
2248 /* pop args */
2249 SP = PL_stack_base + POPMARK;
2250
2251 PUTBACK;
2252 }
2253
2254 /* now that we have a slf_frame, interpret it! */
2255 /* we use a callback system not to make the code needlessly */
2256 /* complicated, but so we can run multiple perl coros from one cctx */
2257
2258 do
2259 {
2260 struct coro_transfer_args ta;
2261
2262 slf_frame.prepare (aTHX_ &ta);
2263 TRANSFER (ta, 0);
2264
2265 checkmark = PL_stack_sp - PL_stack_base;
2266 }
2267 while (slf_frame.check (aTHX_ &slf_frame));
2268
2269 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2270
2271 /* exception handling */
2272 if (expect_false (CORO_THROW))
2273 {
2274 SV *exception = sv_2mortal (CORO_THROW);
2275
2276 CORO_THROW = 0;
2277 sv_setsv (ERRSV, exception);
2278 croak (0);
2279 }
2280
2281 /* return value handling - mostly like entersub */
2282 /* make sure we put something on the stack in scalar context */
2283 if (GIMME_V == G_SCALAR)
2284 {
2285 dSP;
2286 SV **bot = PL_stack_base + checkmark;
2287
2288 if (sp == bot) /* too few, push undef */
2289 bot [1] = &PL_sv_undef;
2290 else if (sp != bot + 1) /* too many, take last one */
2291 bot [1] = *sp;
2292
2293 SP = bot + 1;
2294
2295 PUTBACK;
2296 }
2297
2298 return NORMAL;
2299}
2300
2301static void
2302api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2303{
2304 int i;
2305 SV **arg = PL_stack_base + ax;
2306 int items = PL_stack_sp - arg + 1;
2307
2308 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2309
2310 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2311 && PL_op->op_ppaddr != pp_slf)
2312 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2313
2314 CvFLAGS (cv) |= CVf_SLF;
2315 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2316 slf_cv = cv;
2317
2318 /* we patch the op, and then re-run the whole call */
2319 /* we have to put the same argument on the stack for this to work */
2320 /* and this will be done by pp_restore */
2321 slf_restore.op_next = (OP *)&slf_restore;
2322 slf_restore.op_type = OP_CUSTOM;
2323 slf_restore.op_ppaddr = pp_restore;
2324 slf_restore.op_first = PL_op;
2325
2326 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2327
2328 if (PL_op->op_flags & OPf_STACKED)
2329 {
2330 if (items > slf_arga)
2331 {
2332 slf_arga = items;
2333 free (slf_argv);
2334 slf_argv = malloc (slf_arga * sizeof (SV *));
2335 }
2336
2337 slf_argc = items;
2338
2339 for (i = 0; i < items; ++i)
2340 slf_argv [i] = SvREFCNT_inc (arg [i]);
2341 }
2342 else
2343 slf_argc = 0;
2344
2345 PL_op->op_ppaddr = pp_slf;
2346 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2347
2348 PL_op = (OP *)&slf_restore;
2349}
2350
2351/*****************************************************************************/
2352/* dynamic wind */
2353
2354static void
2355on_enterleave_call (pTHX_ SV *cb)
2356{
2357 dSP;
2358
2359 PUSHSTACK;
2360
2361 PUSHMARK (SP);
2362 PUTBACK;
2363 call_sv (cb, G_VOID | G_DISCARD);
2364 SPAGAIN;
2365
2366 POPSTACK;
2367}
2368
2369static SV *
2370coro_avp_pop_and_free (pTHX_ AV **avp)
2371{
2372 AV *av = *avp;
2373 SV *res = av_pop (av);
2374
2375 if (AvFILLp (av) < 0)
2376 {
2377 *avp = 0;
2378 SvREFCNT_dec (av);
2379 }
2380
2381 return res;
2382}
2383
2384static void
2385coro_pop_on_enter (pTHX_ void *coro)
2386{
2387 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2388 SvREFCNT_dec (cb);
2389}
2390
2391static void
2392coro_pop_on_leave (pTHX_ void *coro)
2393{
2394 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2395 on_enterleave_call (aTHX_ sv_2mortal (cb));
2396}
1742 2397
1743/*****************************************************************************/ 2398/*****************************************************************************/
1744/* PerlIO::cede */ 2399/* PerlIO::cede */
1745 2400
1746typedef struct 2401typedef struct
… …
1814 PerlIOBuf_get_cnt, 2469 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2470 PerlIOBuf_set_ptrcnt,
1816}; 2471};
1817 2472
1818/*****************************************************************************/ 2473/*****************************************************************************/
2474/* Coro::Semaphore & Coro::Signal */
1819 2475
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 * 2476static SV *
1831pp_restore (pTHX) 2477coro_waitarray_new (pTHX_ int count)
1832{ 2478{
1833 dSP; 2479 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2480 AV *av = newAV ();
2481 SV **ary;
1834 2482
1835 PUSHMARK (SP); 2483 /* unfortunately, building manually saves memory */
2484 Newx (ary, 2, SV *);
2485 AvALLOC (av) = ary;
2486#if PERL_VERSION_ATLEAST (5,10,0)
2487 AvARRAY (av) = ary;
2488#else
2489 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2490 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2491 SvPVX ((SV *)av) = (char *)ary;
2492#endif
2493 AvMAX (av) = 1;
2494 AvFILLp (av) = 0;
2495 ary [0] = newSViv (count);
1836 2496
1837 EXTEND (SP, 3); 2497 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} 2498}
1845 2499
1846static void 2500/* 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 2501
1852static void 2502static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2503coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2504{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2505 SV *count_sv = AvARRAY (av)[0];
2506 IV count = SvIVX (count_sv);
1856 2507
1857 frame->prepare = slf_prepare_set_stacklevel; 2508 count += adjust;
1858 frame->check = slf_check_nop; 2509 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2510
1862static void 2511 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2512 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 { 2513 {
1921 /* first iteration */ 2514 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 2515
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2516 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2517 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2518 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2519 cb = av_shift (av);
1931 2520
1932 /* pop args */ 2521 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2522 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2523 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2524 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2525 }
1942 2526 else if (SvTYPE (cb) == SVt_PVCV)
2527 {
2528 dSP;
2529 PUSHMARK (SP);
2530 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1943 PUTBACK; 2531 PUTBACK;
2532 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2533 }
1944 2534
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items); 2535 SvREFCNT_dec (cb);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 { 2536 }
1954 struct coro_transfer_args ta; 2537}
1955 2538
1956 slf_frame.prepare (aTHX_ &ta); 2539static void
1957 TRANSFER (ta, 0); 2540coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2541{
2542 /* call $sem->adjust (0) to possibly wake up some other waiters */
2543 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2544}
1958 2545
1959 checkmark = PL_stack_sp - PL_stack_base; 2546static int
2547slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2548{
2549 AV *av = (AV *)frame->data;
2550 SV *count_sv = AvARRAY (av)[0];
2551
2552 /* if we are about to throw, don't actually acquire the lock, just throw */
2553 if (CORO_THROW)
2554 return 0;
2555 else if (SvIVX (count_sv) > 0)
1960 } 2556 {
1961 while (slf_frame.check (aTHX_ &slf_frame)); 2557 SvSTATE_current->on_destroy = 0;
1962 2558
2559 if (acquire)
2560 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2561 else
2562 coro_semaphore_adjust (aTHX_ av, 0);
2563
2564 return 0;
2565 }
2566 else
2567 {
2568 int i;
2569 /* if we were woken up but can't down, we look through the whole */
2570 /* waiters list and only add us if we aren't in there already */
2571 /* this avoids some degenerate memory usage cases */
2572
2573 for (i = 1; i <= AvFILLp (av); ++i)
2574 if (AvARRAY (av)[i] == SvRV (coro_current))
2575 return 1;
2576
2577 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2578 return 1;
2579 }
2580}
2581
2582static int
2583slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2584{
2585 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2586}
2587
2588static int
2589slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2590{
2591 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2592}
2593
2594static void
2595slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2596{
2597 AV *av = (AV *)SvRV (arg [0]);
2598
2599 if (SvIVX (AvARRAY (av)[0]) > 0)
2600 {
2601 frame->data = (void *)av;
2602 frame->prepare = prepare_nop;
2603 }
2604 else
2605 {
2606 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2607
2608 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2609 frame->prepare = prepare_schedule;
2610
2611 /* to avoid race conditions when a woken-up coro gets terminated */
2612 /* we arrange for a temporary on_destroy that calls adjust (0) */
2613 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2614 }
2615}
2616
2617static void
2618slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2619{
2620 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2621 frame->check = slf_check_semaphore_down;
2622}
2623
2624static void
2625slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2626{
2627 if (items >= 2)
2628 {
2629 /* callback form */
2630 AV *av = (AV *)SvRV (arg [0]);
2631 SV *cb_cv = s_get_cv_croak (arg [1]);
2632
2633 av_push (av, SvREFCNT_inc_NN (cb_cv));
2634
2635 if (SvIVX (AvARRAY (av)[0]) > 0)
2636 coro_semaphore_adjust (aTHX_ av, 0);
2637
2638 frame->prepare = prepare_nop;
2639 frame->check = slf_check_nop;
2640 }
2641 else
2642 {
2643 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2644 frame->check = slf_check_semaphore_wait;
2645 }
2646}
2647
2648/* signal */
2649
2650static void
2651coro_signal_wake (pTHX_ AV *av, int count)
2652{
2653 SvIVX (AvARRAY (av)[0]) = 0;
2654
2655 /* now signal count waiters */
2656 while (count > 0 && AvFILLp (av) > 0)
2657 {
2658 SV *cb;
2659
2660 /* swap first two elements so we can shift a waiter */
2661 cb = AvARRAY (av)[0];
2662 AvARRAY (av)[0] = AvARRAY (av)[1];
2663 AvARRAY (av)[1] = cb;
2664
2665 cb = av_shift (av);
2666
2667 if (SvTYPE (cb) == SVt_PVCV)
2668 {
2669 dSP;
2670 PUSHMARK (SP);
2671 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2672 PUTBACK;
2673 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2674 }
2675 else
2676 {
2677 api_ready (aTHX_ cb);
2678 sv_setiv (cb, 0); /* signal waiter */
2679 }
2680
2681 SvREFCNT_dec (cb);
2682
2683 --count;
2684 }
2685}
2686
2687static int
2688slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2689{
2690 /* if we are about to throw, also stop waiting */
2691 return SvROK ((SV *)frame->data) && !CORO_THROW;
2692}
2693
2694static void
2695slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2696{
2697 AV *av = (AV *)SvRV (arg [0]);
2698
2699 if (items >= 2)
2700 {
2701 SV *cb_cv = s_get_cv_croak (arg [1]);
2702 av_push (av, SvREFCNT_inc_NN (cb_cv));
2703
2704 if (SvIVX (AvARRAY (av)[0]))
2705 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2706
2707 frame->prepare = prepare_nop;
2708 frame->check = slf_check_nop;
2709 }
2710 else if (SvIVX (AvARRAY (av)[0]))
2711 {
2712 SvIVX (AvARRAY (av)[0]) = 0;
2713 frame->prepare = prepare_nop;
2714 frame->check = slf_check_nop;
2715 }
2716 else
2717 {
2718 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2719
2720 av_push (av, waiter);
2721
2722 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2723 frame->prepare = prepare_schedule;
2724 frame->check = slf_check_signal_wait;
2725 }
2726}
2727
2728/*****************************************************************************/
2729/* Coro::AIO */
2730
2731#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2732
2733/* helper storage struct */
2734struct io_state
2735{
2736 int errorno;
2737 I32 laststype; /* U16 in 5.10.0 */
2738 int laststatval;
2739 Stat_t statcache;
2740};
2741
2742static void
2743coro_aio_callback (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746 AV *state = (AV *)S_GENSUB_ARG;
2747 SV *coro = av_pop (state);
2748 SV *data_sv = newSV (sizeof (struct io_state));
2749
2750 av_extend (state, items - 1);
2751
2752 sv_upgrade (data_sv, SVt_PV);
2753 SvCUR_set (data_sv, sizeof (struct io_state));
2754 SvPOK_only (data_sv);
2755
2756 {
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 data->errorno = errno;
2760 data->laststype = PL_laststype;
2761 data->laststatval = PL_laststatval;
2762 data->statcache = PL_statcache;
2763 }
2764
2765 /* now build the result vector out of all the parameters and the data_sv */
2766 {
2767 int i;
2768
2769 for (i = 0; i < items; ++i)
2770 av_push (state, SvREFCNT_inc_NN (ST (i)));
2771 }
2772
2773 av_push (state, data_sv);
2774
2775 api_ready (aTHX_ coro);
2776 SvREFCNT_dec (coro);
2777 SvREFCNT_dec ((AV *)state);
2778}
2779
2780static int
2781slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2782{
2783 AV *state = (AV *)frame->data;
2784
2785 /* if we are about to throw, return early */
2786 /* this does not cancel the aio request, but at least */
2787 /* it quickly returns */
2788 if (CORO_THROW)
2789 return 0;
2790
2791 /* one element that is an RV? repeat! */
2792 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2793 return 1;
2794
2795 /* restore status */
2796 {
2797 SV *data_sv = av_pop (state);
2798 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2799
2800 errno = data->errorno;
2801 PL_laststype = data->laststype;
2802 PL_laststatval = data->laststatval;
2803 PL_statcache = data->statcache;
2804
2805 SvREFCNT_dec (data_sv);
2806 }
2807
2808 /* push result values */
1963 { 2809 {
1964 dSP; 2810 dSP;
1965 SV **bot = PL_stack_base + checkmark; 2811 int i;
1966 int gimme = GIMME_V;
1967 2812
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2813 EXTEND (SP, AvFILLp (state) + 1);
1969 2814 for (i = 0; i <= AvFILLp (state); ++i)
1970 /* make sure we put something on the stack in scalar context */ 2815 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1971 if (gimme == G_SCALAR)
1972 {
1973 if (sp == bot)
1974 XPUSHs (&PL_sv_undef);
1975
1976 SP = bot + 1;
1977 }
1978 2816
1979 PUTBACK; 2817 PUTBACK;
1980 } 2818 }
1981 2819
1982 return NORMAL; 2820 return 0;
1983} 2821}
1984 2822
1985static void 2823static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2824slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1987{ 2825{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2826 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2827 SV *coro_hv = SvRV (coro_current);
2828 struct coro *coro = SvSTATE_hv (coro_hv);
1989 2829
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] 2830 /* put our coroutine id on the state arg */
1991 && PL_op->op_ppaddr != pp_slf) 2831 av_push (state, SvREFCNT_inc_NN (coro_hv));
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or other means, caught");
1993 2832
1994 if (items > 3) 2833 /* first see whether we have a non-zero priority and set it as AIO prio */
1995 croak ("Coro only supports up to three arguments to SLF functions currently, caught"); 2834 if (coro->prio)
2835 {
2836 dSP;
1996 2837
1997 CvFLAGS (cv) |= CVf_SLF; 2838 static SV *prio_cv;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb; 2839 static SV *prio_sv;
1999 slf_cv = cv;
2000 2840
2001 /* we patch the op, and then re-run the whole call */ 2841 if (expect_false (!prio_cv))
2002 /* we have to put the same argument on the stack for this to work */ 2842 {
2003 /* and this will be done by pp_restore */ 2843 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004 slf_restore.op_next = (OP *)&slf_restore; 2844 prio_sv = newSViv (0);
2005 slf_restore.op_type = OP_NULL; 2845 }
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008 2846
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2847 PUSHMARK (SP);
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2848 sv_setiv (prio_sv, coro->prio);
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; 2849 XPUSHs (prio_sv);
2012 2850
2013 PL_op->op_ppaddr = pp_slf; 2851 PUTBACK;
2852 call_sv (prio_cv, G_VOID | G_DISCARD);
2853 }
2014 2854
2015 PL_op = (OP *)&slf_restore; 2855 /* now call the original request */
2856 {
2857 dSP;
2858 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2859 int i;
2860
2861 PUSHMARK (SP);
2862
2863 /* first push all args to the stack */
2864 EXTEND (SP, items + 1);
2865
2866 for (i = 0; i < items; ++i)
2867 PUSHs (arg [i]);
2868
2869 /* now push the callback closure */
2870 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2871
2872 /* now call the AIO function - we assume our request is uncancelable */
2873 PUTBACK;
2874 call_sv ((SV *)req, G_VOID | G_DISCARD);
2875 }
2876
2877 /* now that the requets is going, we loop toll we have a result */
2878 frame->data = (void *)state;
2879 frame->prepare = prepare_schedule;
2880 frame->check = slf_check_aio_req;
2016} 2881}
2882
2883static void
2884coro_aio_req_xs (pTHX_ CV *cv)
2885{
2886 dXSARGS;
2887
2888 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2889
2890 XSRETURN_EMPTY;
2891}
2892
2893/*****************************************************************************/
2894
2895#if CORO_CLONE
2896# include "clone.c"
2897#endif
2017 2898
2018MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2899MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019 2900
2020PROTOTYPES: DISABLE 2901PROTOTYPES: DISABLE
2021 2902
2022BOOT: 2903BOOT:
2023{ 2904{
2024#ifdef USE_ITHREADS 2905#ifdef USE_ITHREADS
2025 MUTEX_INIT (&coro_lock);
2026# if CORO_PTHREAD 2906# if CORO_PTHREAD
2027 coro_thx = PERL_GET_CONTEXT; 2907 coro_thx = PERL_GET_CONTEXT;
2028# endif 2908# endif
2029#endif 2909#endif
2030 BOOT_PAGESIZE; 2910 BOOT_PAGESIZE;
2031 2911
2912 cctx_current = cctx_new_empty ();
2913
2032 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2914 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2033 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2915 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2034 2916
2035 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2917 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2036 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2918 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2050 main_mainstack = PL_mainstack; 2932 main_mainstack = PL_mainstack;
2051 main_top_env = PL_top_env; 2933 main_top_env = PL_top_env;
2052 2934
2053 while (main_top_env->je_prev) 2935 while (main_top_env->je_prev)
2054 main_top_env = main_top_env->je_prev; 2936 main_top_env = main_top_env->je_prev;
2937
2938 {
2939 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2940
2941 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2942 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2943
2944 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2945 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2946 }
2055 2947
2056 coroapi.ver = CORO_API_VERSION; 2948 coroapi.ver = CORO_API_VERSION;
2057 coroapi.rev = CORO_API_REVISION; 2949 coroapi.rev = CORO_API_REVISION;
2058 2950
2059 coroapi.transfer = api_transfer; 2951 coroapi.transfer = api_transfer;
… …
2070 2962
2071 if (!svp) croak ("Time::HiRes is required"); 2963 if (!svp) croak ("Time::HiRes is required");
2072 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2964 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2073 2965
2074 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2966 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2967
2968 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2969 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2075 } 2970 }
2076 2971
2077 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2972 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2078} 2973}
2079 2974
2080SV * 2975SV *
2081new (char *klass, ...) 2976new (char *klass, ...)
2977 ALIAS:
2978 Coro::new = 1
2082 CODE: 2979 CODE:
2083{ 2980{
2084 struct coro *coro; 2981 struct coro *coro;
2085 MAGIC *mg; 2982 MAGIC *mg;
2086 HV *hv; 2983 HV *hv;
2984 SV *cb;
2087 int i; 2985 int i;
2986
2987 if (items > 1)
2988 {
2989 cb = s_get_cv_croak (ST (1));
2990
2991 if (!ix)
2992 {
2993 if (CvISXSUB (cb))
2994 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2995
2996 if (!CvROOT (cb))
2997 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2998 }
2999 }
2088 3000
2089 Newz (0, coro, 1, struct coro); 3001 Newz (0, coro, 1, struct coro);
2090 coro->args = newAV (); 3002 coro->args = newAV ();
2091 coro->flags = CF_NEW; 3003 coro->flags = CF_NEW;
2092 3004
… …
2097 coro->hv = hv = newHV (); 3009 coro->hv = hv = newHV ();
2098 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3010 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2099 mg->mg_flags |= MGf_DUP; 3011 mg->mg_flags |= MGf_DUP;
2100 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3012 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2101 3013
3014 if (items > 1)
3015 {
2102 av_extend (coro->args, items - 1); 3016 av_extend (coro->args, items - 1 + ix - 1);
3017
3018 if (ix)
3019 {
3020 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3021 cb = (SV *)cv_coro_run;
3022 }
3023
3024 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3025
2103 for (i = 1; i < items; i++) 3026 for (i = 2; i < items; i++)
2104 av_push (coro->args, newSVsv (ST (i))); 3027 av_push (coro->args, newSVsv (ST (i)));
3028 }
2105} 3029}
2106 OUTPUT: 3030 OUTPUT:
2107 RETVAL 3031 RETVAL
2108 3032
2109void 3033void
2110_set_stacklevel (...) 3034transfer (...)
3035 PROTOTYPE: $$
2111 CODE: 3036 CODE:
2112 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); 3037 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2113
2114void
2115transfer (...)
2116 CODE:
2117 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2118 3038
2119bool 3039bool
2120_destroy (SV *coro_sv) 3040_destroy (SV *coro_sv)
2121 CODE: 3041 CODE:
2122 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3042 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2127_exit (int code) 3047_exit (int code)
2128 PROTOTYPE: $ 3048 PROTOTYPE: $
2129 CODE: 3049 CODE:
2130 _exit (code); 3050 _exit (code);
2131 3051
3052SV *
3053clone (Coro::State coro)
3054 CODE:
3055{
3056#if CORO_CLONE
3057 struct coro *ncoro = coro_clone (aTHX_ coro);
3058 MAGIC *mg;
3059 /* TODO: too much duplication */
3060 ncoro->hv = newHV ();
3061 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3062 mg->mg_flags |= MGf_DUP;
3063 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3064#else
3065 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3066#endif
3067}
3068 OUTPUT:
3069 RETVAL
3070
2132int 3071int
2133cctx_stacksize (int new_stacksize = 0) 3072cctx_stacksize (int new_stacksize = 0)
3073 PROTOTYPE: ;$
2134 CODE: 3074 CODE:
2135 RETVAL = cctx_stacksize; 3075 RETVAL = cctx_stacksize;
2136 if (new_stacksize) 3076 if (new_stacksize)
2137 { 3077 {
2138 cctx_stacksize = new_stacksize; 3078 cctx_stacksize = new_stacksize;
… …
2141 OUTPUT: 3081 OUTPUT:
2142 RETVAL 3082 RETVAL
2143 3083
2144int 3084int
2145cctx_max_idle (int max_idle = 0) 3085cctx_max_idle (int max_idle = 0)
3086 PROTOTYPE: ;$
2146 CODE: 3087 CODE:
2147 RETVAL = cctx_max_idle; 3088 RETVAL = cctx_max_idle;
2148 if (max_idle > 1) 3089 if (max_idle > 1)
2149 cctx_max_idle = max_idle; 3090 cctx_max_idle = max_idle;
2150 OUTPUT: 3091 OUTPUT:
2151 RETVAL 3092 RETVAL
2152 3093
2153int 3094int
2154cctx_count () 3095cctx_count ()
3096 PROTOTYPE:
2155 CODE: 3097 CODE:
2156 RETVAL = cctx_count; 3098 RETVAL = cctx_count;
2157 OUTPUT: 3099 OUTPUT:
2158 RETVAL 3100 RETVAL
2159 3101
2160int 3102int
2161cctx_idle () 3103cctx_idle ()
3104 PROTOTYPE:
2162 CODE: 3105 CODE:
2163 RETVAL = cctx_idle; 3106 RETVAL = cctx_idle;
2164 OUTPUT: 3107 OUTPUT:
2165 RETVAL 3108 RETVAL
2166 3109
2167void 3110void
2168list () 3111list ()
3112 PROTOTYPE:
2169 PPCODE: 3113 PPCODE:
2170{ 3114{
2171 struct coro *coro; 3115 struct coro *coro;
2172 for (coro = coro_first; coro; coro = coro->next) 3116 for (coro = coro_first; coro; coro = coro->next)
2173 if (coro->hv) 3117 if (coro->hv)
… …
2180 eval = 1 3124 eval = 1
2181 CODE: 3125 CODE:
2182{ 3126{
2183 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3127 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2184 { 3128 {
2185 struct coro temp; 3129 struct coro *current = SvSTATE_current;
2186 3130
2187 if (!(coro->flags & CF_RUNNING)) 3131 if (current != coro)
2188 { 3132 {
2189 PUTBACK; 3133 PUTBACK;
2190 save_perl (aTHX_ &temp); 3134 save_perl (aTHX_ current);
2191 load_perl (aTHX_ coro); 3135 load_perl (aTHX_ coro);
3136 SPAGAIN;
2192 } 3137 }
2193 3138
2194 {
2195 dSP;
2196 ENTER;
2197 SAVETMPS;
2198 PUTBACK;
2199 PUSHSTACK; 3139 PUSHSTACK;
3140
2200 PUSHMARK (SP); 3141 PUSHMARK (SP);
3142 PUTBACK;
2201 3143
2202 if (ix) 3144 if (ix)
2203 eval_sv (coderef, 0); 3145 eval_sv (coderef, 0);
2204 else 3146 else
2205 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3147 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2206 3148
2207 POPSTACK; 3149 POPSTACK;
2208 SPAGAIN; 3150 SPAGAIN;
2209 FREETMPS;
2210 LEAVE;
2211 PUTBACK;
2212 }
2213 3151
2214 if (!(coro->flags & CF_RUNNING)) 3152 if (current != coro)
2215 { 3153 {
3154 PUTBACK;
2216 save_perl (aTHX_ coro); 3155 save_perl (aTHX_ coro);
2217 load_perl (aTHX_ &temp); 3156 load_perl (aTHX_ current);
2218 SPAGAIN; 3157 SPAGAIN;
2219 } 3158 }
2220 } 3159 }
2221} 3160}
2222 3161
… …
2226 ALIAS: 3165 ALIAS:
2227 is_ready = CF_READY 3166 is_ready = CF_READY
2228 is_running = CF_RUNNING 3167 is_running = CF_RUNNING
2229 is_new = CF_NEW 3168 is_new = CF_NEW
2230 is_destroyed = CF_DESTROYED 3169 is_destroyed = CF_DESTROYED
3170 is_suspended = CF_SUSPENDED
2231 CODE: 3171 CODE:
2232 RETVAL = boolSV (coro->flags & ix); 3172 RETVAL = boolSV (coro->flags & ix);
2233 OUTPUT: 3173 OUTPUT:
2234 RETVAL 3174 RETVAL
2235 3175
2236void 3176void
2237throw (Coro::State self, SV *throw = &PL_sv_undef) 3177throw (Coro::State self, SV *throw = &PL_sv_undef)
2238 PROTOTYPE: $;$ 3178 PROTOTYPE: $;$
2239 CODE: 3179 CODE:
3180{
3181 struct coro *current = SvSTATE_current;
3182 SV **throwp = self == current ? &CORO_THROW : &self->except;
2240 SvREFCNT_dec (self->throw); 3183 SvREFCNT_dec (*throwp);
3184 SvGETMAGIC (throw);
2241 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3185 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3186}
2242 3187
2243void 3188void
2244api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3189api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3190 PROTOTYPE: $;$
2245 C_ARGS: aTHX_ coro, flags 3191 C_ARGS: aTHX_ coro, flags
2246 3192
2247SV * 3193SV *
2248has_cctx (Coro::State coro) 3194has_cctx (Coro::State coro)
2249 PROTOTYPE: $ 3195 PROTOTYPE: $
2250 CODE: 3196 CODE:
2251 RETVAL = boolSV (!!coro->cctx); 3197 /* maybe manage the running flag differently */
3198 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2252 OUTPUT: 3199 OUTPUT:
2253 RETVAL 3200 RETVAL
2254 3201
2255int 3202int
2256is_traced (Coro::State coro) 3203is_traced (Coro::State coro)
… …
2274 OUTPUT: 3221 OUTPUT:
2275 RETVAL 3222 RETVAL
2276 3223
2277void 3224void
2278force_cctx () 3225force_cctx ()
3226 PROTOTYPE:
2279 CODE: 3227 CODE:
2280 struct coro *coro = SvSTATE (coro_current);
2281 coro->cctx->idle_sp = 0; 3228 cctx_current->idle_sp = 0;
2282 3229
2283void 3230void
2284swap_defsv (Coro::State self) 3231swap_defsv (Coro::State self)
2285 PROTOTYPE: $ 3232 PROTOTYPE: $
2286 ALIAS: 3233 ALIAS:
… …
2294 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3241 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2295 3242
2296 SV *tmp = *src; *src = *dst; *dst = tmp; 3243 SV *tmp = *src; *src = *dst; *dst = tmp;
2297 } 3244 }
2298 3245
3246void
3247cancel (Coro::State self)
3248 CODE:
3249 coro_state_destroy (aTHX_ self);
3250 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3251
3252
3253SV *
3254enable_times (int enabled = enable_times)
3255 CODE:
3256{
3257 RETVAL = boolSV (enable_times);
3258
3259 if (enabled != enable_times)
3260 {
3261 enable_times = enabled;
3262
3263 coro_times_update ();
3264 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3265 }
3266}
3267 OUTPUT:
3268 RETVAL
3269
3270void
3271times (Coro::State self)
3272 PPCODE:
3273{
3274 struct coro *current = SvSTATE (coro_current);
3275
3276 if (expect_false (current == self))
3277 {
3278 coro_times_update ();
3279 coro_times_add (SvSTATE (coro_current));
3280 }
3281
3282 EXTEND (SP, 2);
3283 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3284 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3285
3286 if (expect_false (current == self))
3287 coro_times_sub (SvSTATE (coro_current));
3288}
3289
2299MODULE = Coro::State PACKAGE = Coro 3290MODULE = Coro::State PACKAGE = Coro
2300 3291
2301BOOT: 3292BOOT:
2302{ 3293{
2303 int i;
2304
2305 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2306 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3294 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2307 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3295 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2308 3296 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3297 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2309 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3298 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2310 SvREADONLY_on (coro_current); 3299 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3300 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3301 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3302 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3303
3304 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3305 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3306 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3307 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2311 3308
2312 coro_stash = gv_stashpv ("Coro", TRUE); 3309 coro_stash = gv_stashpv ("Coro", TRUE);
2313 3310
2314 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3311 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2315 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3312 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2316 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3313 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2317 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3314 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2318 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3315 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2319 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3316 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2320
2321 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2322 coro_ready[i] = newAV ();
2323 3317
2324 { 3318 {
2325 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3319 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2326 3320
2327 coroapi.schedule = api_schedule; 3321 coroapi.schedule = api_schedule;
3322 coroapi.schedule_to = api_schedule_to;
2328 coroapi.cede = api_cede; 3323 coroapi.cede = api_cede;
2329 coroapi.cede_notself = api_cede_notself; 3324 coroapi.cede_notself = api_cede_notself;
2330 coroapi.ready = api_ready; 3325 coroapi.ready = api_ready;
2331 coroapi.is_ready = api_is_ready; 3326 coroapi.is_ready = api_is_ready;
2332 coroapi.nready = coro_nready; 3327 coroapi.nready = coro_nready;
2333 coroapi.current = coro_current; 3328 coroapi.current = coro_current;
2334 3329
2335 GCoroAPI = &coroapi; 3330 /*GCoroAPI = &coroapi;*/
2336 sv_setiv (sv, (IV)&coroapi); 3331 sv_setiv (sv, (IV)&coroapi);
2337 SvREADONLY_on (sv); 3332 SvREADONLY_on (sv);
2338 } 3333 }
2339} 3334}
2340 3335
2341void 3336void
3337terminate (...)
3338 CODE:
3339 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3340
3341void
2342schedule (...) 3342schedule (...)
2343 CODE: 3343 CODE:
2344 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 3344 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3345
3346void
3347schedule_to (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3350
3351void
3352cede_to (...)
3353 CODE:
3354 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2345 3355
2346void 3356void
2347cede (...) 3357cede (...)
2348 CODE: 3358 CODE:
2349 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3359 CORO_EXECUTE_SLF_XS (slf_init_cede);
2350 3360
2351void 3361void
2352cede_notself (...) 3362cede_notself (...)
2353 CODE: 3363 CODE:
2354 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 3364 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2355 3365
2356void 3366void
2357_set_current (SV *current) 3367_set_current (SV *current)
2358 PROTOTYPE: $ 3368 PROTOTYPE: $
2359 CODE: 3369 CODE:
… …
2362 3372
2363void 3373void
2364_set_readyhook (SV *hook) 3374_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3375 PROTOTYPE: $
2366 CODE: 3376 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3377 SvREFCNT_dec (coro_readyhook);
3378 SvGETMAGIC (hook);
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3379 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370 UNLOCK;
2371 3380
2372int 3381int
2373prio (Coro::State coro, int newprio = 0) 3382prio (Coro::State coro, int newprio = 0)
3383 PROTOTYPE: $;$
2374 ALIAS: 3384 ALIAS:
2375 nice = 1 3385 nice = 1
2376 CODE: 3386 CODE:
2377{ 3387{
2378 RETVAL = coro->prio; 3388 RETVAL = coro->prio;
… …
2380 if (items > 1) 3390 if (items > 1)
2381 { 3391 {
2382 if (ix) 3392 if (ix)
2383 newprio = coro->prio - newprio; 3393 newprio = coro->prio - newprio;
2384 3394
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3395 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3396 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3397
2388 coro->prio = newprio; 3398 coro->prio = newprio;
2389 } 3399 }
2390} 3400}
2391 OUTPUT: 3401 OUTPUT:
… …
2405 CODE: 3415 CODE:
2406 RETVAL = coro_nready; 3416 RETVAL = coro_nready;
2407 OUTPUT: 3417 OUTPUT:
2408 RETVAL 3418 RETVAL
2409 3419
2410# for async_pool speedup
2411void 3420void
2412_pool_1 (SV *cb) 3421suspend (Coro::State self)
3422 PROTOTYPE: $
2413 CODE: 3423 CODE:
2414{ 3424 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3425
2422 if (!invoke) 3426void
3427resume (Coro::State self)
3428 PROTOTYPE: $
3429 CODE:
3430 self->flags &= ~CF_SUSPENDED;
3431
3432void
3433_pool_handler (...)
3434 CODE:
3435 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3436
3437void
3438async_pool (SV *cv, ...)
3439 PROTOTYPE: &@
3440 PPCODE:
3441{
3442 HV *hv = (HV *)av_pop (av_async_pool);
3443 AV *av = newAV ();
3444 SV *cb = ST (0);
3445 int i;
3446
3447 av_extend (av, items - 2);
3448 for (i = 1; i < items; ++i)
3449 av_push (av, SvREFCNT_inc_NN (ST (i)));
3450
3451 if ((SV *)hv == &PL_sv_undef)
2423 { 3452 {
2424 SV *old = PL_diehook; 3453 PUSHMARK (SP);
2425 PL_diehook = 0; 3454 EXTEND (SP, 2);
2426 SvREFCNT_dec (old); 3455 PUSHs (sv_Coro);
2427 croak ("\3async_pool terminate\2\n"); 3456 PUSHs ((SV *)cv_pool_handler);
3457 PUTBACK;
3458 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3459 SPAGAIN;
3460
3461 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2428 } 3462 }
2429 3463
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3464 {
2443 av_fill (defav, len - 1); 3465 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3466
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3467 assert (!coro->invoke_cb);
3468 assert (!coro->invoke_av);
3469 coro->invoke_cb = SvREFCNT_inc (cb);
3470 coro->invoke_av = av;
2446 } 3471 }
2447 3472
3473 api_ready (aTHX_ (SV *)hv);
3474
3475 if (GIMME_V != G_VOID)
3476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3477 else
2448 SvREFCNT_dec (invoke); 3478 SvREFCNT_dec (hv);
2449} 3479}
2450 3480
2451void 3481SV *
2452_pool_2 (SV *cb) 3482rouse_cb ()
3483 PROTOTYPE:
2453 CODE: 3484 CODE:
2454{ 3485 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3486 OUTPUT:
2527 RETVAL 3487 RETVAL
2528 3488
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3489void
2535_get_state (SV *self) 3490rouse_wait (...)
3491 PROTOTYPE: ;$
2536 PPCODE: 3492 PPCODE:
2537{ 3493 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3494
2563void 3495void
2564_set_state (SV *state) 3496on_enter (SV *block)
3497 ALIAS:
3498 on_leave = 1
2565 PROTOTYPE: $ 3499 PROTOTYPE: &
3500 CODE:
3501{
3502 struct coro *coro = SvSTATE_current;
3503 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3504
3505 block = s_get_cv_croak (block);
3506
3507 if (!*avp)
3508 *avp = newAV ();
3509
3510 av_push (*avp, SvREFCNT_inc (block));
3511
3512 if (!ix)
3513 on_enterleave_call (aTHX_ block);
3514
3515 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3516 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3517 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3518}
3519
3520
3521MODULE = Coro::State PACKAGE = PerlIO::cede
3522
3523BOOT:
3524 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3525
3526
3527MODULE = Coro::State PACKAGE = Coro::Semaphore
3528
3529SV *
3530new (SV *klass, SV *count = 0)
3531 CODE:
3532{
3533 int semcnt = 1;
3534
3535 if (count)
3536 {
3537 SvGETMAGIC (count);
3538
3539 if (SvOK (count))
3540 semcnt = SvIV (count);
3541 }
3542
3543 RETVAL = sv_bless (
3544 coro_waitarray_new (aTHX_ semcnt),
3545 GvSTASH (CvGV (cv))
3546 );
3547}
3548 OUTPUT:
3549 RETVAL
3550
3551# helper for Coro::Channel and others
3552SV *
3553_alloc (int count)
3554 CODE:
3555 RETVAL = coro_waitarray_new (aTHX_ count);
3556 OUTPUT:
3557 RETVAL
3558
3559SV *
3560count (SV *self)
3561 CODE:
3562 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3563 OUTPUT:
3564 RETVAL
3565
3566void
3567up (SV *self, int adjust = 1)
3568 ALIAS:
3569 adjust = 1
3570 CODE:
3571 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3572
3573void
3574down (...)
3575 CODE:
3576 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3577
3578void
3579wait (...)
3580 CODE:
3581 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3582
3583void
3584try (SV *self)
3585 PPCODE:
3586{
3587 AV *av = (AV *)SvRV (self);
3588 SV *count_sv = AvARRAY (av)[0];
3589 IV count = SvIVX (count_sv);
3590
3591 if (count > 0)
3592 {
3593 --count;
3594 SvIVX (count_sv) = count;
3595 XSRETURN_YES;
3596 }
3597 else
3598 XSRETURN_NO;
3599}
3600
3601void
3602waiters (SV *self)
3603 PPCODE:
3604{
3605 AV *av = (AV *)SvRV (self);
3606 int wcount = AvFILLp (av) + 1 - 1;
3607
3608 if (GIMME_V == G_SCALAR)
3609 XPUSHs (sv_2mortal (newSViv (wcount)));
3610 else
3611 {
3612 int i;
3613 EXTEND (SP, wcount);
3614 for (i = 1; i <= wcount; ++i)
3615 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3616 }
3617}
3618
3619MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3620
3621void
3622_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 3623 PPCODE:
2567{ 3624{
2568 AV *av = (AV *)SvRV (state); 3625 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 3626
2572 errno = data->errorno; 3627 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 3628 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 3629 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 3630 XSRETURN_YES;
2576 3631
3632 XSRETURN_NO;
3633}
3634
3635MODULE = Coro::State PACKAGE = Coro::Signal
3636
3637SV *
3638new (SV *klass)
3639 CODE:
3640 RETVAL = sv_bless (
3641 coro_waitarray_new (aTHX_ 0),
3642 GvSTASH (CvGV (cv))
3643 );
3644 OUTPUT:
3645 RETVAL
3646
3647void
3648wait (...)
3649 CODE:
3650 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3651
3652void
3653broadcast (SV *self)
3654 CODE:
3655{
3656 AV *av = (AV *)SvRV (self);
3657 coro_signal_wake (aTHX_ av, AvFILLp (av));
3658}
3659
3660void
3661send (SV *self)
3662 CODE:
3663{
3664 AV *av = (AV *)SvRV (self);
3665
2577 EXTEND (SP, AvFILLp (av)); 3666 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3667 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3668 else
3669 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3670}
3671
3672IV
3673awaited (SV *self)
3674 CODE:
3675 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3676 OUTPUT:
3677 RETVAL
2581 3678
2582 3679
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3680MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3681
2585BOOT: 3682BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3683 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3684
2588SV * 3685void
2589_schedule (...) 3686_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3687 CODE:
2592{ 3688{
2593 static int incede; 3689 static int incede;
2594 3690
2595 api_cede_notself (aTHX); 3691 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3697 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3698 if (coro_nready >= incede)
2603 { 3699 {
2604 PUSHMARK (SP); 3700 PUSHMARK (SP);
2605 PUTBACK; 3701 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3702 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3703 }
2609 3704
2610 --incede; 3705 --incede;
2611} 3706}
2612 3707
2613 3708
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3709MODULE = Coro::State PACKAGE = Coro::AIO
2615 3710
2616BOOT: 3711void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3712_register (char *target, char *proto, SV *req)
3713 CODE:
3714{
3715 SV *req_cv = s_get_cv_croak (req);
3716 /* newXSproto doesn't return the CV on 5.8 */
3717 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3718 sv_setpv ((SV *)slf_cv, proto);
3719 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3720}
2618 3721

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