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Comparing Coro/Coro/State.xs (file contents):
Revision 1.296 by root, Tue Nov 18 10:39:52 2008 UTC vs.
Revision 1.374 by root, Fri Oct 2 19:55:59 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
111#endif 64#endif
112 65
113#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
127#else 80#else
128# define dSTACKLEVEL volatile void *stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 82# define STACKLEVEL ((void *)&stacklevel)
130#endif 83#endif
131 84
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
133 86
134#if __GNUC__ >= 3 87#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
137# define INLINE static inline 90# define INLINE static inline
138#else 91#else
139# define attribute(x) 92# define attribute(x)
140# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
141# define INLINE static 94# define INLINE static
… …
145#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
146 99
147#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
148 101
149#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
150 104
151#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
152# if CORO_PTHREAD 106# if CORO_PTHREAD
153static void *coro_thx; 107static void *coro_thx;
154# endif 108# endif
155#endif 109#endif
156 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
157static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
158 123
159/* we hijack an hopefully unused CV flag for our purposes */ 124/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000 125#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX); 126static OP *pp_slf (pTHX);
162 127
… …
166static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
167static JMPENV *main_top_env; 132static JMPENV *main_top_env;
168static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
170 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
139
171static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
172static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
173static SV *rv_diehook; 142static SV *rv_diehook;
174static SV *rv_warnhook; 143static SV *rv_warnhook;
175static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
176 145
177/* async_pool helper stuff */ 146/* async_pool helper stuff */
178static SV *sv_pool_rss; 147static SV *sv_pool_rss;
179static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
180static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
181 153
182/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
183static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
184 162
185static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
186static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
187 165
188enum { 166enum {
… …
214 int valgrind_id; 192 int valgrind_id;
215#endif 193#endif
216 unsigned char flags; 194 unsigned char flags;
217} coro_cctx; 195} coro_cctx;
218 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
219enum { 201enum {
220 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
221 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
222 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
224}; 207};
225 208
226/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
227typedef struct 210typedef struct
228{ 211{
229 SV *defsv; 212 SV *defsv;
230 AV *defav; 213 AV *defav;
231 SV *errsv; 214 SV *errsv;
232 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
233#define VAR(name,type) type name; 217#define VAR(name,type) type name;
234# include "state.h" 218# include "state.h"
235#undef VAR 219#undef VAR
236} perl_slots; 220} perl_slots;
237 221
… …
240/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
241struct coro { 225struct coro {
242 /* the C coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 227 coro_cctx *cctx;
244 228
229 /* ready queue */
230 struct coro *next_ready;
231
245 /* state data */ 232 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */ 233 struct CoroSLF slf_frame; /* saved slf frame */
247 AV *mainstack; 234 AV *mainstack;
248 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
249 236
237 CV *startcv; /* the CV to execute */
250 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
251 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
252 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
253 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro); 242 void (*on_destroy)(pTHX_ struct coro *coro);
255 243
256 /* statistics */ 244 /* statistics */
257 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
258 246
259 /* coro process data */ 247 /* coro process data */
260 int prio; 248 int prio;
261 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
262 251
263 /* async_pool */ 252 /* async_pool */
264 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
265 266
266 /* linked list */ 267 /* linked list */
267 struct coro *next, *prev; 268 struct coro *next, *prev;
268}; 269};
269 270
… …
272 273
273/* the following variables are effectively part of the perl context */ 274/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */ 275/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */ 276/* the mainr easonw e don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */ 277static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
278 278
279/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
280 280
281#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
287 287
288/* for Coro.pm */ 288/* for Coro.pm */
289static SV *coro_current; 289static SV *coro_current;
290static SV *coro_readyhook; 290static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
292static CV *cv_coro_run, *cv_coro_terminate;
292static struct coro *coro_first; 293static struct coro *coro_first;
293#define coro_nready coroapi.nready 294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
294 315
295/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
296 317
297static SV * 318static SV *
298coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
322 get_hv (name, create); 343 get_hv (name, create);
323#endif 344#endif
324 return get_hv (name, create); 345 return get_hv (name, create);
325} 346}
326 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
327static AV * 447static AV *
328coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
329{ 449{
330 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
332 452
333 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 459#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist); 461 --AvFILLp (padlist);
342 462
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
344 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
345 465
346 return newpadlist; 466 return newpadlist;
347} 467}
348 468
349static void 469static void
350free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
351{ 471{
352 /* may be during global destruction */ 472 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
354 { 474 {
355 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
356 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
357 { 478 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
359 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
360 { 481 I32 j = AvFILLp (av);
361 SV *sv; 482
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
363 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
364
365 SvREFCNT_dec (*svp);
366 }
367 } 488 }
368 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
369 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
370 } 494 }
371} 495}
372 496
373static int 497static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 499{
376 AV *padlist; 500 AV *padlist;
377 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
378 506
379 /* casting is fun. */ 507 /* casting is fun. */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
381 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
382 510
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 512
385 return 0; 513 return 0;
386} 514}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 515
391static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 517 0, 0, 0, 0,
393 coro_cv_free 518 coro_cv_free
394}; 519};
395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438 520
439/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
440static void 522static void
441get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
442{ 524{
… …
448 else 530 else
449 { 531 {
450#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
457#else 539#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 541#endif
460 } 542 }
461} 543}
462 544
463static void 545static void
… …
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 553
472 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
473 555
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
476 558
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 560}
479 561
480/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
481 617
482static void 618static void
483load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
484{ 620{
485 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
486 c->slot = 0; 622 c->slot = 0;
487 623
488 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
489 625
490 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
494 631
495 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
496 # include "state.h" 633 # include "state.h"
497 #undef VAR 634 #undef VAR
498 635
… …
511 648
512 PUTBACK; 649 PUTBACK;
513 } 650 }
514 651
515 slf_frame = c->slf_frame; 652 slf_frame = c->slf_frame;
516 coro_throw = c->throw; 653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
517} 672}
518 673
519static void 674static void
520save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
521{ 676{
522 c->throw = coro_throw; 677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 696 c->slf_frame = slf_frame;
524 697
525 { 698 {
526 dSP; 699 dSP;
527 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
… …
539 { 712 {
540 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
541 { 714 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
543 716
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 718 {
546 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
547 720
548 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
549 { 722 {
550 EXTEND (SP, 3);
551 PUSHs ((SV *)CvPADLIST (cv)); 723 PUSHs ((SV *)CvPADLIST (cv));
552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 724 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
553 PUSHs ((SV *)cv); 725 PUSHs ((SV *)cv);
554 726
555 CvDEPTH (cv) = 0; 727 CvDEPTH (cv) = 0;
… …
573 /* we manually unroll here, as usually 2 slots is enough */ 745 /* we manually unroll here, as usually 2 slots is enough */
574 if (SLOT_COUNT >= 1) CXINC; 746 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC; 747 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC; 748 if (SLOT_COUNT >= 3) CXINC;
577 { 749 {
578 int i; 750 unsigned int i;
579 for (i = 3; i < SLOT_COUNT; ++i) 751 for (i = 3; i < SLOT_COUNT; ++i)
580 CXINC; 752 CXINC;
581 } 753 }
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 754 cxstack_ix -= SLOT_COUNT; /* undo allocation */
583 755
584 c->mainstack = PL_mainstack; 756 c->mainstack = PL_mainstack;
585 757
586 { 758 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 759 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 760
589 slot->defav = GvAV (PL_defgv); 761 slot->defav = GvAV (PL_defgv);
590 slot->defsv = DEFSV; 762 slot->defsv = DEFSV;
591 slot->errsv = ERRSV; 763 slot->errsv = ERRSV;
592 slot->irsgv = GvSV (irsgv); 764 slot->irsgv = GvSV (irsgv);
765 slot->hinthv = GvHV (PL_hintgv);
593 766
594 #define VAR(name,type) slot->name = PL_ ## name; 767 #define VAR(name,type) slot->name = PL_ ## name;
595 # include "state.h" 768 # include "state.h"
596 #undef VAR 769 #undef VAR
597 } 770 }
… …
602 * of perl.c:init_stacks, except that it uses less memory 775 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 776 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 777 * not usually need a lot of stackspace.
605 */ 778 */
606#if CORO_PREFER_PERL_FUNCTIONS 779#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 780# define coro_init_stacks(thx) init_stacks ()
608#else 781#else
609static void 782static void
610coro_init_stacks (pTHX) 783coro_init_stacks (pTHX)
611{ 784{
612 PL_curstackinfo = new_stackinfo(32, 8); 785 PL_curstackinfo = new_stackinfo(32, 8);
… …
675#if !PERL_VERSION_ATLEAST (5,10,0) 848#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 849 Safefree (PL_retstack);
677#endif 850#endif
678} 851}
679 852
853#define CORO_RSS \
854 rss += sizeof (SYM (curstackinfo)); \
855 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
856 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
857 rss += SYM (tmps_max) * sizeof (SV *); \
858 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
859 rss += SYM (scopestack_max) * sizeof (I32); \
860 rss += SYM (savestack_max) * sizeof (ANY);
861
680static size_t 862static size_t
681coro_rss (pTHX_ struct coro *coro) 863coro_rss (pTHX_ struct coro *coro)
682{ 864{
683 size_t rss = sizeof (*coro); 865 size_t rss = sizeof (*coro);
684 866
685 if (coro->mainstack) 867 if (coro->mainstack)
686 { 868 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 869 if (coro->flags & CF_RUNNING)
691 { 870 {
692 slot = &tmp_slot; 871 #define SYM(sym) PL_ ## sym
693 872 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 873 #undef SYM
697 } 874 }
698 else 875 else
699 slot = coro->slot;
700
701 if (slot)
702 { 876 {
703 rss += sizeof (slot->curstackinfo); 877 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 878 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 879 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 880 }
715 } 881 }
716 882
717 return rss; 883 return rss;
718} 884}
… …
731#endif 897#endif
732 898
733/* 899/*
734 * This overrides the default magic get method of %SIG elements. 900 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 901 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 902 * and instead of trying to save and restore the hash elements, we just provide
737 * readback here. 903 * readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 904 */
742static int 905static int
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 906coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 907{
745 const char *s = MgPV_nolen_const (mg); 908 const char *s = MgPV_nolen_const (mg);
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 961 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 962
800 if (svp) 963 if (svp)
801 { 964 {
802 SV *old = *svp; 965 SV *old = *svp;
803 *svp = newSVsv (sv); 966 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 967 SvREFCNT_dec (old);
805 return 0; 968 return 0;
806 } 969 }
807 } 970 }
808 971
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 983slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 984{
822 return 0; 985 return 0;
823} 986}
824 987
825static UNOP coro_setup_op; 988static int
989slf_check_repeat (pTHX_ struct CoroSLF *frame)
990{
991 return 1;
992}
993
994static UNOP init_perl_op;
826 995
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 996static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 997init_perl (pTHX_ struct coro *coro)
829{ 998{
830 /* 999 /*
831 * emulate part of the perl startup here. 1000 * emulate part of the perl startup here.
832 */ 1001 */
833 coro_init_stacks (aTHX); 1002 coro_init_stacks (aTHX);
834 1003
835 PL_runops = RUNOPS_DEFAULT; 1004 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1005 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1006 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1007 PL_comppad = 0;
1008 PL_comppad_name = 0;
1009 PL_comppad_name_fill = 0;
1010 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1011 PL_curpm = 0;
840 PL_curpad = 0; 1012 PL_curpad = 0;
841 PL_localizing = 0; 1013 PL_localizing = 0;
842 PL_dirty = 0; 1014 PL_dirty = 0;
843 PL_restartop = 0; 1015 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1016#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1017 PL_parser = 0;
846#endif 1018#endif
1019 PL_hints = 0;
847 1020
848 /* recreate the die/warn hooks */ 1021 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1022 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1023 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 1024
852 GvSV (PL_defgv) = newSV (0); 1025 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1026 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1027 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1028 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1029 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1030 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1031 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1032
859 { 1033 {
860 dSP; 1034 dSP;
861 UNOP myop; 1035 UNOP myop;
862 1036
863 Zero (&myop, 1, UNOP); 1037 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1038 myop.op_next = Nullop;
1039 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1040 myop.op_flags = OPf_WANT_VOID;
866 1041
867 PUSHMARK (SP); 1042 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1043 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1044 PUTBACK;
870 PL_op = (OP *)&myop; 1045 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1046 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1047 }
874 1048
875 /* this newly created coroutine might be run on an existing cctx which most 1049 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1050 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1051 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1052 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1053 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880 1054
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1055 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1056 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1057 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1058 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1059 /* no flags etc. required, as an init function won't be called */
886 1060
887 PL_op = (OP *)&coro_setup_op; 1061 PL_op = (OP *)&init_perl_op;
888 1062
889 /* copy throw, in case it was set before coro_setup */ 1063 /* copy throw, in case it was set before init_perl */
890 coro_throw = coro->throw; 1064 CORO_THROW = coro->except;
891}
892 1065
1066 SWAP_SVS (coro);
1067
1068 if (expect_false (enable_times))
1069 {
1070 coro_times_update ();
1071 coro_times_sub (coro);
1072 }
1073}
1074
893static void 1075static void
894coro_destruct (pTHX_ struct coro *coro) 1076coro_unwind_stacks (pTHX)
895{ 1077{
896 if (!IN_DESTRUCT) 1078 if (!IN_DESTRUCT)
897 { 1079 {
898 /* restore all saved variables and stuff */ 1080 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1081 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1089 POPSTACK_TO (PL_mainstack);
908 1090
909 /* unwind main stack */ 1091 /* unwind main stack */
910 dounwind (-1); 1092 dounwind (-1);
911 } 1093 }
1094}
912 1095
913 SvREFCNT_dec (GvSV (PL_defgv)); 1096static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1097destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1098{
916 SvREFCNT_dec (PL_defoutgv); 1099 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1100
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1101 {
1102 struct coro *current = SvSTATE_current;
1103
1104 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1105
1106 save_perl (aTHX_ current);
1107 load_perl (aTHX_ coro);
1108
1109 coro_unwind_stacks (aTHX);
1110 coro_destruct_stacks (aTHX);
1111
1112 /* restore swapped sv's */
1113 SWAP_SVS (coro);
1114
1115 // now save some sv's to be free'd later
1116 svf [0] = GvSV (PL_defgv);
1117 svf [1] = (SV *)GvAV (PL_defgv);
1118 svf [2] = GvSV (PL_errgv);
1119 svf [3] = (SV *)PL_defoutgv;
1120 svf [4] = PL_rs;
1121 svf [5] = GvSV (irsgv);
1122 svf [6] = (SV *)GvHV (PL_hintgv);
1123 svf [7] = PL_diehook;
1124 svf [8] = PL_warnhook;
1125 assert (9 == sizeof (svf) / sizeof (*svf));
1126
1127 load_perl (aTHX_ current);
1128 }
1129
1130 {
1131 unsigned int i;
1132
1133 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1134 SvREFCNT_dec (svf [i]);
1135
923 SvREFCNT_dec (coro->saved_deffh); 1136 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro_throw); 1137 SvREFCNT_dec (coro->rouse_cb);
925 1138 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1139 SvREFCNT_dec (coro->invoke_av);
1140 SvREFCNT_dec (coro->swap_sv);
1141 }
927} 1142}
928 1143
929INLINE void 1144INLINE void
930free_coro_mortal (pTHX) 1145free_coro_mortal (pTHX)
931{ 1146{
… …
939static int 1154static int
940runops_trace (pTHX) 1155runops_trace (pTHX)
941{ 1156{
942 COP *oldcop = 0; 1157 COP *oldcop = 0;
943 int oldcxix = -2; 1158 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1159
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1160 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1161 {
949 PERL_ASYNC_CHECK (); 1162 PERL_ASYNC_CHECK ();
950 1163
951 if (cctx->flags & CC_TRACE_ALL) 1164 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1165 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1166 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1167 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1168 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1169 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1170 AV *av = newAV (); /* return values */
958 SV **cb; 1171 SV **cb;
… …
995 1208
996 if (PL_curcop != &PL_compiling) 1209 if (PL_curcop != &PL_compiling)
997 { 1210 {
998 SV **cb; 1211 SV **cb;
999 1212
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1213 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1214 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1215 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1216
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1217 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1218 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1219 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1220 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1221 SV *fullname = sv_2mortal (newSV (0));
1010 1222
1011 if (isGV (gv)) 1223 if (isGV (gv))
… …
1016 SAVETMPS; 1228 SAVETMPS;
1017 EXTEND (SP, 3); 1229 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1230 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1231 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1232 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1233 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1234 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1235 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1236 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1237 SPAGAIN;
1026 FREETMPS; 1238 FREETMPS;
… …
1029 } 1241 }
1030 1242
1031 oldcxix = cxstack_ix; 1243 oldcxix = cxstack_ix;
1032 } 1244 }
1033 1245
1034 if (cctx->flags & CC_TRACE_LINE) 1246 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1247 {
1036 dSP; 1248 dSP;
1037 1249
1038 PL_runops = RUNOPS_DEFAULT; 1250 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1251 ENTER;
… …
1058 1270
1059 TAINT_NOT; 1271 TAINT_NOT;
1060 return 0; 1272 return 0;
1061} 1273}
1062 1274
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1275static struct CoroSLF cctx_ssl_frame;
1065 1276
1066static void 1277static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1278slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1279{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1280 ta->prev = 0;
1071} 1281}
1072 1282
1073static int 1283static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1284slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1285{
… …
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1288 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1289}
1080 1290
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1291/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1292static void NOINLINE
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1293cctx_prepare (pTHX)
1084{ 1294{
1085 PL_top_env = &PL_start_env; 1295 PL_top_env = &PL_start_env;
1086 1296
1087 if (cctx->flags & CC_TRACE) 1297 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1298 PL_runops = runops_trace;
1089 1299
1090 /* we already must be executing an SLF op, there is no other valid way 1300 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1301 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1302 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1303 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1304
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1305 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1306 cctx_ssl_frame = slf_frame;
1098 1307
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1308 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1309 slf_frame.check = slf_check_set_stacklevel;
1101} 1310}
… …
1124 /* normally we would need to skip the entersub here */ 1333 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1334 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1335 /* PL_nop = PL_nop->op_next */
1127 1336
1128 /* inject a fake subroutine call to cctx_init */ 1337 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1338 cctx_prepare (aTHX);
1130 1339
1131 /* cctx_run is the alternative tail of transfer() */ 1340 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1341 transfer_tail (aTHX);
1133 1342
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1343 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1344 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1345 perl_run (PL_curinterp);
1346 /*
1347 * Unfortunately, there is no way to get at the return values of the
1348 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1349 * runtime errors here, as this is just a random interpreter, not a thread.
1350 */
1137 1351
1138 /* 1352 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1353 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1354 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1355 * reason for perl_run to return. We try to exit by jumping to the
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1356 * bootstrap-time "top" top_env, as we cannot restore the "main"
1143 * coroutine as Coro has no such concept 1357 * coroutine as Coro has no such concept.
1358 * This actually isn't valid with the pthread backend, but OSes requiring
1359 * that backend are too broken to do it in a standards-compliant way.
1144 */ 1360 */
1145 PL_top_env = main_top_env; 1361 PL_top_env = main_top_env;
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1362 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1363 }
1148} 1364}
… …
1225cctx_destroy (coro_cctx *cctx) 1441cctx_destroy (coro_cctx *cctx)
1226{ 1442{
1227 if (!cctx) 1443 if (!cctx)
1228 return; 1444 return;
1229 1445
1446 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1447
1230 --cctx_count; 1448 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1449 coro_destroy (&cctx->cctx);
1232 1450
1233 /* coro_transfer creates new, empty cctx's */ 1451 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr) 1452 if (cctx->sptr)
… …
1297 /* TODO: throwing up here is considered harmful */ 1515 /* TODO: throwing up here is considered harmful */
1298 1516
1299 if (expect_true (prev != next)) 1517 if (expect_true (prev != next))
1300 { 1518 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1519 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1520 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1521
1304 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED)) 1522 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1523 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1524
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1525#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1526 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1527 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1528#endif
… …
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1534transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1535{
1321 dSTACKLEVEL; 1536 dSTACKLEVEL;
1322 1537
1323 /* sometimes transfer is only called to set idle_sp */ 1538 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1539 if (expect_false (!prev))
1325 { 1540 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1541 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1542 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1543 }
1329 else if (expect_true (prev != next)) 1544 else if (expect_true (prev != next))
1330 { 1545 {
1331 coro_cctx *prev__cctx; 1546 coro_cctx *cctx_prev;
1332 1547
1333 if (expect_false (prev->flags & CF_NEW)) 1548 if (expect_false (prev->flags & CF_NEW))
1334 { 1549 {
1335 /* create a new empty/source context */ 1550 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1551 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1552 prev->flags |= CF_RUNNING;
1339 } 1553 }
1340 1554
1341 prev->flags &= ~CF_RUNNING; 1555 prev->flags &= ~CF_RUNNING;
… …
1347 if (expect_false (next->flags & CF_NEW)) 1561 if (expect_false (next->flags & CF_NEW))
1348 { 1562 {
1349 /* need to start coroutine */ 1563 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1564 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1565 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1566 init_perl (aTHX_ next);
1353 } 1567 }
1354 else 1568 else
1355 load_perl (aTHX_ next); 1569 load_perl (aTHX_ next);
1356 1570
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1571 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1572 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1573 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1574 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1575 && !force_cctx
1364 )) 1576 ))
1365 { 1577 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1578 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1579 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1580
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1581 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1582 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1583 if (expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1584 if (expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1585 next->cctx = cctx_get (aTHX);
1376 1586
1377 cctx_put (prev__cctx); 1587 cctx_put (cctx_current);
1378 } 1588 }
1589 else
1590 prev->cctx = cctx_current;
1379 1591
1380 ++next->usecount; 1592 ++next->usecount;
1381 1593
1382 if (expect_true (!next->cctx)) 1594 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1595 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1596
1385 if (expect_false (prev__cctx != next->cctx)) 1597 next->cctx = 0;
1598
1599 if (expect_false (cctx_prev != cctx_current))
1386 { 1600 {
1387 prev__cctx->top_env = PL_top_env; 1601 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1602 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1603 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1604 }
1391 1605
1392 transfer_tail (aTHX); 1606 transfer_tail (aTHX);
1393 } 1607 }
1394} 1608}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1616coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1617{
1404 if (coro->flags & CF_DESTROYED) 1618 if (coro->flags & CF_DESTROYED)
1405 return 0; 1619 return 0;
1406 1620
1407 if (coro->on_destroy) 1621 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1622 coro->on_destroy (aTHX_ coro);
1409 1623
1410 coro->flags |= CF_DESTROYED; 1624 coro->flags |= CF_DESTROYED;
1411 1625
1412 if (coro->flags & CF_READY) 1626 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1630 --coro_nready;
1417 } 1631 }
1418 else 1632 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1633 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1634
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1635 if (coro->mainstack
1422 { 1636 && coro->mainstack != main_mainstack
1423 struct coro temp; 1637 && coro->slot
1424 1638 && !PL_dirty)
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1639 destroy_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436 1640
1437 cctx_destroy (coro->cctx); 1641 cctx_destroy (coro->cctx);
1642 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1643 SvREFCNT_dec (coro->args);
1644 SvREFCNT_dec (CORO_THROW);
1439 1645
1440 if (coro->next) coro->next->prev = coro->prev; 1646 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1647 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1648 if (coro == coro_first) coro_first = coro->next;
1443 1649
… …
1502/** Coro ********************************************************************/ 1708/** Coro ********************************************************************/
1503 1709
1504INLINE void 1710INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1711coro_enq (pTHX_ struct coro *coro)
1506{ 1712{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1713 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1714
1510INLINE SV * 1715 SvREFCNT_inc_NN (coro->hv);
1716
1717 coro->next_ready = 0;
1718 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1719 ready [1] = coro;
1720}
1721
1722INLINE struct coro *
1511coro_deq (pTHX) 1723coro_deq (pTHX)
1512{ 1724{
1513 int prio; 1725 int prio;
1514 1726
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1727 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1728 {
1517 return av_shift (coro_ready [prio]); 1729 struct coro **ready = coro_ready [prio];
1730
1731 if (ready [0])
1732 {
1733 struct coro *coro = ready [0];
1734 ready [0] = coro->next_ready;
1735 return coro;
1736 }
1737 }
1518 1738
1519 return 0; 1739 return 0;
1740}
1741
1742static void
1743invoke_sv_ready_hook_helper (void)
1744{
1745 dTHX;
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1520} 1757}
1521 1758
1522static int 1759static int
1523api_ready (pTHX_ SV *coro_sv) 1760api_ready (pTHX_ SV *coro_sv)
1524{ 1761{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1533 1763
1534 if (coro->flags & CF_READY) 1764 if (coro->flags & CF_READY)
1535 return 0; 1765 return 0;
1536 1766
1537 coro->flags |= CF_READY; 1767 coro->flags |= CF_READY;
1538 1768
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1769 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1770
1545 if (sv_hook) 1771 if (!coro_nready++)
1546 { 1772 if (coroapi.readyhook)
1547 dSP; 1773 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1774
1563 return 1; 1775 return 1;
1564} 1776}
1565 1777
1566static int 1778static int
1567api_is_ready (pTHX_ SV *coro_sv) 1779api_is_ready (pTHX_ SV *coro_sv)
1568{ 1780{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1781 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1782}
1571 1783
1784/* expects to own a reference to next->hv */
1572INLINE void 1785INLINE void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1786prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1787{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1788 SV *prev_sv = SvRV (coro_current);
1789
1614 ta->prev = SvSTATE_hv (prev_sv); 1790 ta->prev = SvSTATE_hv (prev_sv);
1791 ta->next = next;
1792
1615 TRANSFER_CHECK (*ta); 1793 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1794
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1795 SvRV_set (coro_current, (SV *)next->hv);
1619 1796
1620 free_coro_mortal (aTHX); 1797 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1798 coro_mortal = prev_sv;
1622} 1799}
1623 1800
1801static void
1802prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1803{
1804 for (;;)
1805 {
1806 struct coro *next = coro_deq (aTHX);
1807
1808 if (expect_true (next))
1809 {
1810 /* cannot transfer to destroyed coros, skip and look for next */
1811 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1812 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1813 else
1814 {
1815 next->flags &= ~CF_READY;
1816 --coro_nready;
1817
1818 prepare_schedule_to (aTHX_ ta, next);
1819 break;
1820 }
1821 }
1822 else
1823 {
1824 /* nothing to schedule: call the idle handler */
1825 if (SvROK (sv_idle)
1826 && SvOBJECT (SvRV (sv_idle)))
1827 {
1828 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1829 api_ready (aTHX_ SvRV (sv_idle));
1830 --coro_nready;
1831 }
1832 else
1833 {
1834 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1835 dSP;
1836
1837 ENTER;
1838 SAVETMPS;
1839
1840 PUSHMARK (SP);
1841 PUTBACK;
1842 call_sv (sv_idle, G_VOID | G_DISCARD);
1843
1844 FREETMPS;
1845 LEAVE;
1846 }
1847 }
1848 }
1849}
1850
1624INLINE void 1851INLINE void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1852prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1853{
1627 api_ready (aTHX_ coro_current); 1854 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1855 prepare_schedule (aTHX_ ta);
… …
1647{ 1874{
1648 struct coro_transfer_args ta; 1875 struct coro_transfer_args ta;
1649 1876
1650 prepare_schedule (aTHX_ &ta); 1877 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1878 TRANSFER (ta, 1);
1879}
1880
1881static void
1882api_schedule_to (pTHX_ SV *coro_sv)
1883{
1884 struct coro_transfer_args ta;
1885 struct coro *next = SvSTATE (coro_sv);
1886
1887 SvREFCNT_inc_NN (coro_sv);
1888 prepare_schedule_to (aTHX_ &ta, next);
1652} 1889}
1653 1890
1654static int 1891static int
1655api_cede (pTHX) 1892api_cede (pTHX)
1656{ 1893{
… …
1685static void 1922static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 1923api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 1924{
1688 struct coro *coro = SvSTATE (coro_sv); 1925 struct coro *coro = SvSTATE (coro_sv);
1689 1926
1927 if (coro->flags & CF_RUNNING)
1928 croak ("cannot enable tracing on a running coroutine, caught");
1929
1690 if (flags & CC_TRACE) 1930 if (flags & CC_TRACE)
1691 { 1931 {
1692 if (!coro->cctx) 1932 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 1933 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 1934 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 1935 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 1936
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1937 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 1938 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1939 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 1940 {
… …
1703 if (coro->flags & CF_RUNNING) 1943 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 1944 PL_runops = RUNOPS_DEFAULT;
1705 else 1945 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 1946 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 1947 }
1948}
1949
1950static void
1951coro_call_on_destroy (pTHX_ struct coro *coro)
1952{
1953 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1954 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1955
1956 if (on_destroyp)
1957 {
1958 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1959
1960 while (AvFILLp (on_destroy) >= 0)
1961 {
1962 dSP; /* don't disturb outer sp */
1963 SV *cb = av_pop (on_destroy);
1964
1965 PUSHMARK (SP);
1966
1967 if (statusp)
1968 {
1969 int i;
1970 AV *status = (AV *)SvRV (*statusp);
1971 EXTEND (SP, AvFILLp (status) + 1);
1972
1973 for (i = 0; i <= AvFILLp (status); ++i)
1974 PUSHs (AvARRAY (status)[i]);
1975 }
1976
1977 PUTBACK;
1978 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1979 }
1980 }
1981}
1982
1983static void
1984slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1985{
1986 int i;
1987 HV *hv = (HV *)SvRV (coro_current);
1988 AV *av = newAV ();
1989
1990 /* items are actually not so common, so optimise for this case */
1991 if (items)
1992 {
1993 av_extend (av, items - 1);
1994
1995 for (i = 0; i < items; ++i)
1996 av_push (av, SvREFCNT_inc_NN (arg [i]));
1997 }
1998
1999 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2000
2001 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2002 api_ready (aTHX_ sv_manager);
2003
2004 frame->prepare = prepare_schedule;
2005 frame->check = slf_check_repeat;
2006
2007 /* as a minor optimisation, we could unwind all stacks here */
2008 /* but that puts extra pressure on pp_slf, and is not worth much */
2009 /*coro_unwind_stacks (aTHX);*/
2010}
2011
2012/*****************************************************************************/
2013/* async pool handler */
2014
2015static int
2016slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2017{
2018 HV *hv = (HV *)SvRV (coro_current);
2019 struct coro *coro = (struct coro *)frame->data;
2020
2021 if (!coro->invoke_cb)
2022 return 1; /* loop till we have invoke */
2023 else
2024 {
2025 hv_store (hv, "desc", sizeof ("desc") - 1,
2026 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2027
2028 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2029
2030 {
2031 dSP;
2032 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2033 PUTBACK;
2034 }
2035
2036 SvREFCNT_dec (GvAV (PL_defgv));
2037 GvAV (PL_defgv) = coro->invoke_av;
2038 coro->invoke_av = 0;
2039
2040 return 0;
2041 }
2042}
2043
2044static void
2045slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2046{
2047 HV *hv = (HV *)SvRV (coro_current);
2048 struct coro *coro = SvSTATE_hv ((SV *)hv);
2049
2050 if (expect_true (coro->saved_deffh))
2051 {
2052 /* subsequent iteration */
2053 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2054 coro->saved_deffh = 0;
2055
2056 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2057 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2058 {
2059 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2060 coro->invoke_av = newAV ();
2061
2062 frame->prepare = prepare_nop;
2063 }
2064 else
2065 {
2066 av_clear (GvAV (PL_defgv));
2067 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2068
2069 coro->prio = 0;
2070
2071 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2072 api_trace (aTHX_ coro_current, 0);
2073
2074 frame->prepare = prepare_schedule;
2075 av_push (av_async_pool, SvREFCNT_inc (hv));
2076 }
2077 }
2078 else
2079 {
2080 /* first iteration, simply fall through */
2081 frame->prepare = prepare_nop;
2082 }
2083
2084 frame->check = slf_check_pool_handler;
2085 frame->data = (void *)coro;
2086}
2087
2088/*****************************************************************************/
2089/* rouse callback */
2090
2091#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2092
2093static void
2094coro_rouse_callback (pTHX_ CV *cv)
2095{
2096 dXSARGS;
2097 SV *data = (SV *)S_GENSUB_ARG;
2098
2099 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2100 {
2101 /* first call, set args */
2102 SV *coro = SvRV (data);
2103 AV *av = newAV ();
2104
2105 SvRV_set (data, (SV *)av);
2106
2107 /* better take a full copy of the arguments */
2108 while (items--)
2109 av_store (av, items, newSVsv (ST (items)));
2110
2111 api_ready (aTHX_ coro);
2112 SvREFCNT_dec (coro);
2113 }
2114
2115 XSRETURN_EMPTY;
2116}
2117
2118static int
2119slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2120{
2121 SV *data = (SV *)frame->data;
2122
2123 if (CORO_THROW)
2124 return 0;
2125
2126 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2127 return 1;
2128
2129 /* now push all results on the stack */
2130 {
2131 dSP;
2132 AV *av = (AV *)SvRV (data);
2133 int i;
2134
2135 EXTEND (SP, AvFILLp (av) + 1);
2136 for (i = 0; i <= AvFILLp (av); ++i)
2137 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2138
2139 /* we have stolen the elements, so set length to zero and free */
2140 AvFILLp (av) = -1;
2141 av_undef (av);
2142
2143 PUTBACK;
2144 }
2145
2146 return 0;
2147}
2148
2149static void
2150slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2151{
2152 SV *cb;
2153
2154 if (items)
2155 cb = arg [0];
2156 else
2157 {
2158 struct coro *coro = SvSTATE_current;
2159
2160 if (!coro->rouse_cb)
2161 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2162
2163 cb = sv_2mortal (coro->rouse_cb);
2164 coro->rouse_cb = 0;
2165 }
2166
2167 if (!SvROK (cb)
2168 || SvTYPE (SvRV (cb)) != SVt_PVCV
2169 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2170 croak ("Coro::rouse_wait called with illegal callback argument,");
2171
2172 {
2173 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2174 SV *data = (SV *)S_GENSUB_ARG;
2175
2176 frame->data = (void *)data;
2177 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2178 frame->check = slf_check_rouse_wait;
2179 }
2180}
2181
2182static SV *
2183coro_new_rouse_cb (pTHX)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv (hv);
2187 SV *data = newRV_inc ((SV *)hv);
2188 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2189
2190 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2191 SvREFCNT_dec (data); /* magicext increases the refcount */
2192
2193 SvREFCNT_dec (coro->rouse_cb);
2194 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2195
2196 return cb;
1708} 2197}
1709 2198
1710/*****************************************************************************/ 2199/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2200/* schedule-like-function opcode (SLF) */
1712 2201
… …
1759static void 2248static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2249slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{ 2250{
1762 frame->prepare = prepare_schedule; 2251 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2252 frame->check = slf_check_nop;
2253}
2254
2255static void
2256slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2257{
2258 struct coro *next = (struct coro *)slf_frame.data;
2259
2260 SvREFCNT_inc_NN (next->hv);
2261 prepare_schedule_to (aTHX_ ta, next);
2262}
2263
2264static void
2265slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2266{
2267 if (!items)
2268 croak ("Coro::schedule_to expects a coroutine argument, caught");
2269
2270 frame->data = (void *)SvSTATE (arg [0]);
2271 frame->prepare = slf_prepare_schedule_to;
2272 frame->check = slf_check_nop;
2273}
2274
2275static void
2276slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2277{
2278 api_ready (aTHX_ SvRV (coro_current));
2279
2280 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1764} 2281}
1765 2282
1766static void 2283static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2284slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2285{
… …
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2357 while (slf_frame.check (aTHX_ &slf_frame));
1841 2358
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2359 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2360
1844 /* exception handling */ 2361 /* exception handling */
1845 if (expect_false (coro_throw)) 2362 if (expect_false (CORO_THROW))
1846 { 2363 {
1847 SV *exception = sv_2mortal (coro_throw); 2364 SV *exception = sv_2mortal (CORO_THROW);
1848 2365
1849 coro_throw = 0; 2366 CORO_THROW = 0;
1850 sv_setsv (ERRSV, exception); 2367 sv_setsv (ERRSV, exception);
1851 croak (0); 2368 croak (0);
1852 } 2369 }
1853 2370
1854 /* return value handling - mostly like entersub */ 2371 /* return value handling - mostly like entersub */
… …
1914 } 2431 }
1915 else 2432 else
1916 slf_argc = 0; 2433 slf_argc = 0;
1917 2434
1918 PL_op->op_ppaddr = pp_slf; 2435 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2436 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2437
1921 PL_op = (OP *)&slf_restore; 2438 PL_op = (OP *)&slf_restore;
2439}
2440
2441/*****************************************************************************/
2442/* dynamic wind */
2443
2444static void
2445on_enterleave_call (pTHX_ SV *cb)
2446{
2447 dSP;
2448
2449 PUSHSTACK;
2450
2451 PUSHMARK (SP);
2452 PUTBACK;
2453 call_sv (cb, G_VOID | G_DISCARD);
2454 SPAGAIN;
2455
2456 POPSTACK;
2457}
2458
2459static SV *
2460coro_avp_pop_and_free (pTHX_ AV **avp)
2461{
2462 AV *av = *avp;
2463 SV *res = av_pop (av);
2464
2465 if (AvFILLp (av) < 0)
2466 {
2467 *avp = 0;
2468 SvREFCNT_dec (av);
2469 }
2470
2471 return res;
2472}
2473
2474static void
2475coro_pop_on_enter (pTHX_ void *coro)
2476{
2477 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2478 SvREFCNT_dec (cb);
2479}
2480
2481static void
2482coro_pop_on_leave (pTHX_ void *coro)
2483{
2484 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2485 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2486}
1923 2487
1924/*****************************************************************************/ 2488/*****************************************************************************/
1925/* PerlIO::cede */ 2489/* PerlIO::cede */
1926 2490
… …
1995 PerlIOBuf_get_cnt, 2559 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2560 PerlIOBuf_set_ptrcnt,
1997}; 2561};
1998 2562
1999/*****************************************************************************/ 2563/*****************************************************************************/
2564/* Coro::Semaphore & Coro::Signal */
2565
2566static SV *
2567coro_waitarray_new (pTHX_ int count)
2568{
2569 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2570 AV *av = newAV ();
2571 SV **ary;
2572
2573 /* unfortunately, building manually saves memory */
2574 Newx (ary, 2, SV *);
2575 AvALLOC (av) = ary;
2576#if PERL_VERSION_ATLEAST (5,10,0)
2577 AvARRAY (av) = ary;
2578#else
2579 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2580 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2581 SvPVX ((SV *)av) = (char *)ary;
2582#endif
2583 AvMAX (av) = 1;
2584 AvFILLp (av) = 0;
2585 ary [0] = newSViv (count);
2586
2587 return newRV_noinc ((SV *)av);
2588}
2589
2000/* Coro::Semaphore */ 2590/* semaphore */
2001 2591
2002static void 2592static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2593coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{ 2594{
2005 SV *count_sv = AvARRAY (av)[0]; 2595 SV *count_sv = AvARRAY (av)[0];
… …
2017 AvARRAY (av)[0] = AvARRAY (av)[1]; 2607 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv; 2608 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av); 2609 cb = av_shift (av);
2020 2610
2021 if (SvOBJECT (cb)) 2611 if (SvOBJECT (cb))
2612 {
2022 api_ready (aTHX_ cb); 2613 api_ready (aTHX_ cb);
2023 else 2614 --count;
2024 croak ("callbacks not yet supported"); 2615 }
2616 else if (SvTYPE (cb) == SVt_PVCV)
2617 {
2618 dSP;
2619 PUSHMARK (SP);
2620 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2621 PUTBACK;
2622 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2623 }
2025 2624
2026 SvREFCNT_dec (cb); 2625 SvREFCNT_dec (cb);
2027
2028 --count;
2029 } 2626 }
2030} 2627}
2031 2628
2032static void 2629static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2630coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2632 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2633 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037} 2634}
2038 2635
2039static int 2636static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2637slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2041{ 2638{
2042 AV *av = (AV *)frame->data; 2639 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0]; 2640 SV *count_sv = AvARRAY (av)[0];
2044 2641
2045 /* if we are about to throw, don't actually acquire the lock, just throw */ 2642 /* if we are about to throw, don't actually acquire the lock, just throw */
2046 if (coro_throw) 2643 if (CORO_THROW)
2047 return 0; 2644 return 0;
2048 else if (SvIVX (count_sv) > 0) 2645 else if (SvIVX (count_sv) > 0)
2049 { 2646 {
2050 SvSTATE_current->on_destroy = 0; 2647 SvSTATE_current->on_destroy = 0;
2648
2649 if (acquire)
2051 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2650 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2651 else
2652 coro_semaphore_adjust (aTHX_ av, 0);
2653
2052 return 0; 2654 return 0;
2053 } 2655 }
2054 else 2656 else
2055 { 2657 {
2056 int i; 2658 int i;
… …
2065 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2667 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2066 return 1; 2668 return 1;
2067 } 2669 }
2068} 2670}
2069 2671
2070static void 2672static int
2673slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2674{
2675 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2676}
2677
2678static int
2679slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2682}
2683
2684static void
2071slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2685slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2072{ 2686{
2073 AV *av = (AV *)SvRV (arg [0]); 2687 AV *av = (AV *)SvRV (arg [0]);
2074 2688
2075 if (SvIVX (AvARRAY (av)[0]) > 0) 2689 if (SvIVX (AvARRAY (av)[0]) > 0)
2076 { 2690 {
… …
2086 2700
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2701 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2702 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2703 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 } 2704 }
2705}
2091 2706
2707static void
2708slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 2711 frame->check = slf_check_semaphore_down;
2093
2094} 2712}
2095 2713
2096/*****************************************************************************/ 2714static void
2097/* gensub: simple closure generation utility */ 2715slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2716{
2107 CV *cv = (CV *)newSV (0); 2717 if (items >= 2)
2718 {
2719 /* callback form */
2720 AV *av = (AV *)SvRV (arg [0]);
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 2722
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 2724
2111 CvANON_on (cv); 2725 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 2726 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2727
2116 return newRV_noinc ((SV *)cv); 2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2734 frame->check = slf_check_semaphore_wait;
2735 }
2736}
2737
2738/* signal */
2739
2740static void
2741coro_signal_wake (pTHX_ AV *av, int count)
2742{
2743 SvIVX (AvARRAY (av)[0]) = 0;
2744
2745 /* now signal count waiters */
2746 while (count > 0 && AvFILLp (av) > 0)
2747 {
2748 SV *cb;
2749
2750 /* swap first two elements so we can shift a waiter */
2751 cb = AvARRAY (av)[0];
2752 AvARRAY (av)[0] = AvARRAY (av)[1];
2753 AvARRAY (av)[1] = cb;
2754
2755 cb = av_shift (av);
2756
2757 if (SvTYPE (cb) == SVt_PVCV)
2758 {
2759 dSP;
2760 PUSHMARK (SP);
2761 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2762 PUTBACK;
2763 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2764 }
2765 else
2766 {
2767 api_ready (aTHX_ cb);
2768 sv_setiv (cb, 0); /* signal waiter */
2769 }
2770
2771 SvREFCNT_dec (cb);
2772
2773 --count;
2774 }
2775}
2776
2777static int
2778slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2779{
2780 /* if we are about to throw, also stop waiting */
2781 return SvROK ((SV *)frame->data) && !CORO_THROW;
2782}
2783
2784static void
2785slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2786{
2787 AV *av = (AV *)SvRV (arg [0]);
2788
2789 if (items >= 2)
2790 {
2791 SV *cb_cv = s_get_cv_croak (arg [1]);
2792 av_push (av, SvREFCNT_inc_NN (cb_cv));
2793
2794 if (SvIVX (AvARRAY (av)[0]))
2795 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2796
2797 frame->prepare = prepare_nop;
2798 frame->check = slf_check_nop;
2799 }
2800 else if (SvIVX (AvARRAY (av)[0]))
2801 {
2802 SvIVX (AvARRAY (av)[0]) = 0;
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else
2807 {
2808 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2809
2810 av_push (av, waiter);
2811
2812 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2813 frame->prepare = prepare_schedule;
2814 frame->check = slf_check_signal_wait;
2815 }
2117} 2816}
2118 2817
2119/*****************************************************************************/ 2818/*****************************************************************************/
2120/* Coro::AIO */ 2819/* Coro::AIO */
2121 2820
… …
2132 2831
2133static void 2832static void
2134coro_aio_callback (pTHX_ CV *cv) 2833coro_aio_callback (pTHX_ CV *cv)
2135{ 2834{
2136 dXSARGS; 2835 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 2836 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 2837 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 2838 SV *data_sv = newSV (sizeof (struct io_state));
2140 2839
2141 av_extend (state, items); 2840 av_extend (state, items - 1);
2142 2841
2143 sv_upgrade (data_sv, SVt_PV); 2842 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 2843 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 2844 SvPOK_only (data_sv);
2146 2845
… …
2174 AV *state = (AV *)frame->data; 2873 AV *state = (AV *)frame->data;
2175 2874
2176 /* if we are about to throw, return early */ 2875 /* if we are about to throw, return early */
2177 /* this does not cancel the aio request, but at least */ 2876 /* this does not cancel the aio request, but at least */
2178 /* it quickly returns */ 2877 /* it quickly returns */
2179 if (coro_throw) 2878 if (CORO_THROW)
2180 return 0; 2879 return 0;
2181 2880
2182 /* one element that is an RV? repeat! */ 2881 /* one element that is an RV? repeat! */
2183 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 2882 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2184 return 1; 2883 return 1;
… …
2256 2955
2257 for (i = 0; i < items; ++i) 2956 for (i = 0; i < items; ++i)
2258 PUSHs (arg [i]); 2957 PUSHs (arg [i]);
2259 2958
2260 /* now push the callback closure */ 2959 /* now push the callback closure */
2261 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 2960 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2262 2961
2263 /* now call the AIO function - we assume our request is uncancelable */ 2962 /* now call the AIO function - we assume our request is uncancelable */
2264 PUTBACK; 2963 PUTBACK;
2265 call_sv ((SV *)req, G_VOID | G_DISCARD); 2964 call_sv ((SV *)req, G_VOID | G_DISCARD);
2266 } 2965 }
… …
2280 2979
2281 XSRETURN_EMPTY; 2980 XSRETURN_EMPTY;
2282} 2981}
2283 2982
2284/*****************************************************************************/ 2983/*****************************************************************************/
2984
2985#if CORO_CLONE
2986# include "clone.c"
2987#endif
2988
2989/*****************************************************************************/
2990
2991static SV *
2992coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2993{
2994 SV *coro_sv;
2995 struct coro *coro;
2996 MAGIC *mg;
2997 HV *hv;
2998 SV *cb;
2999 int i;
3000
3001 if (argc > 0)
3002 {
3003 cb = s_get_cv_croak (argv [0]);
3004
3005 if (!is_coro)
3006 {
3007 if (CvISXSUB (cb))
3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010 if (!CvROOT (cb))
3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
3014
3015 Newz (0, coro, 1, struct coro);
3016 coro->args = newAV ();
3017 coro->flags = CF_NEW;
3018
3019 if (coro_first) coro_first->prev = coro;
3020 coro->next = coro_first;
3021 coro_first = coro;
3022
3023 coro->hv = hv = newHV ();
3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025 mg->mg_flags |= MGf_DUP;
3026 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3027
3028 if (argc > 0)
3029 {
3030 av_extend (coro->args, argc + is_coro - 1);
3031
3032 if (is_coro)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = (SV *)cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040 for (i = 1; i < argc; i++)
3041 av_push (coro->args, newSVsv (argv [i]));
3042 }
3043
3044 return coro_sv;
3045}
2285 3046
2286MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3047MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2287 3048
2288PROTOTYPES: DISABLE 3049PROTOTYPES: DISABLE
2289 3050
… …
2294 coro_thx = PERL_GET_CONTEXT; 3055 coro_thx = PERL_GET_CONTEXT;
2295# endif 3056# endif
2296#endif 3057#endif
2297 BOOT_PAGESIZE; 3058 BOOT_PAGESIZE;
2298 3059
3060 cctx_current = cctx_new_empty ();
3061
2299 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3062 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2300 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3063 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2301 3064
2302 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3065 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2303 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3066 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2322 3085
2323 { 3086 {
2324 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3087 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2325 3088
2326 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3089 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2327 hv_store_ent (PL_custom_op_names, slf, 3090 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2328 newSVpv ("coro_slf", 0), 0);
2329 3091
2330 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3092 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2331 hv_store_ent (PL_custom_op_descs, slf, 3093 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2332 newSVpv ("coro schedule like function", 0), 0);
2333 } 3094 }
2334 3095
2335 coroapi.ver = CORO_API_VERSION; 3096 coroapi.ver = CORO_API_VERSION;
2336 coroapi.rev = CORO_API_REVISION; 3097 coroapi.rev = CORO_API_REVISION;
2337 3098
… …
2349 3110
2350 if (!svp) croak ("Time::HiRes is required"); 3111 if (!svp) croak ("Time::HiRes is required");
2351 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3112 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2352 3113
2353 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3114 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3115
3116 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3117 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2354 } 3118 }
2355 3119
2356 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3120 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2357} 3121}
2358 3122
2359SV * 3123SV *
2360new (char *klass, ...) 3124new (SV *klass, ...)
3125 ALIAS:
3126 Coro::new = 1
2361 CODE: 3127 CODE:
2362{ 3128 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2363 struct coro *coro; 3129 OUTPUT:
2364 MAGIC *mg;
2365 HV *hv;
2366 int i;
2367
2368 Newz (0, coro, 1, struct coro);
2369 coro->args = newAV ();
2370 coro->flags = CF_NEW;
2371
2372 if (coro_first) coro_first->prev = coro;
2373 coro->next = coro_first;
2374 coro_first = coro;
2375
2376 coro->hv = hv = newHV ();
2377 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2378 mg->mg_flags |= MGf_DUP;
2379 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2380
2381 av_extend (coro->args, items - 1);
2382 for (i = 1; i < items; i++)
2383 av_push (coro->args, newSVsv (ST (i)));
2384}
2385 OUTPUT:
2386 RETVAL 3130 RETVAL
2387 3131
2388void 3132void
2389transfer (...) 3133transfer (...)
2390 PROTOTYPE: $$ 3134 PROTOTYPE: $$
… …
2401void 3145void
2402_exit (int code) 3146_exit (int code)
2403 PROTOTYPE: $ 3147 PROTOTYPE: $
2404 CODE: 3148 CODE:
2405 _exit (code); 3149 _exit (code);
3150
3151SV *
3152clone (Coro::State coro)
3153 CODE:
3154{
3155#if CORO_CLONE
3156 struct coro *ncoro = coro_clone (aTHX_ coro);
3157 MAGIC *mg;
3158 /* TODO: too much duplication */
3159 ncoro->hv = newHV ();
3160 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3161 mg->mg_flags |= MGf_DUP;
3162 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3163#else
3164 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3165#endif
3166}
3167 OUTPUT:
3168 RETVAL
2406 3169
2407int 3170int
2408cctx_stacksize (int new_stacksize = 0) 3171cctx_stacksize (int new_stacksize = 0)
2409 PROTOTYPE: ;$ 3172 PROTOTYPE: ;$
2410 CODE: 3173 CODE:
… …
2460 eval = 1 3223 eval = 1
2461 CODE: 3224 CODE:
2462{ 3225{
2463 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3226 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2464 { 3227 {
2465 struct coro temp; 3228 struct coro *current = SvSTATE_current;
2466 3229
2467 if (!(coro->flags & CF_RUNNING)) 3230 if (current != coro)
2468 { 3231 {
2469 PUTBACK; 3232 PUTBACK;
2470 save_perl (aTHX_ &temp); 3233 save_perl (aTHX_ current);
2471 load_perl (aTHX_ coro); 3234 load_perl (aTHX_ coro);
3235 SPAGAIN;
2472 } 3236 }
2473 3237
2474 {
2475 dSP;
2476 ENTER;
2477 SAVETMPS;
2478 PUTBACK;
2479 PUSHSTACK; 3238 PUSHSTACK;
3239
2480 PUSHMARK (SP); 3240 PUSHMARK (SP);
3241 PUTBACK;
2481 3242
2482 if (ix) 3243 if (ix)
2483 eval_sv (coderef, 0); 3244 eval_sv (coderef, 0);
2484 else 3245 else
2485 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3246 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2486 3247
2487 POPSTACK; 3248 POPSTACK;
2488 SPAGAIN; 3249 SPAGAIN;
2489 FREETMPS;
2490 LEAVE;
2491 PUTBACK;
2492 }
2493 3250
2494 if (!(coro->flags & CF_RUNNING)) 3251 if (current != coro)
2495 { 3252 {
3253 PUTBACK;
2496 save_perl (aTHX_ coro); 3254 save_perl (aTHX_ coro);
2497 load_perl (aTHX_ &temp); 3255 load_perl (aTHX_ current);
2498 SPAGAIN; 3256 SPAGAIN;
2499 } 3257 }
2500 } 3258 }
2501} 3259}
2502 3260
… …
2506 ALIAS: 3264 ALIAS:
2507 is_ready = CF_READY 3265 is_ready = CF_READY
2508 is_running = CF_RUNNING 3266 is_running = CF_RUNNING
2509 is_new = CF_NEW 3267 is_new = CF_NEW
2510 is_destroyed = CF_DESTROYED 3268 is_destroyed = CF_DESTROYED
3269 is_suspended = CF_SUSPENDED
2511 CODE: 3270 CODE:
2512 RETVAL = boolSV (coro->flags & ix); 3271 RETVAL = boolSV (coro->flags & ix);
2513 OUTPUT: 3272 OUTPUT:
2514 RETVAL 3273 RETVAL
2515 3274
… …
2517throw (Coro::State self, SV *throw = &PL_sv_undef) 3276throw (Coro::State self, SV *throw = &PL_sv_undef)
2518 PROTOTYPE: $;$ 3277 PROTOTYPE: $;$
2519 CODE: 3278 CODE:
2520{ 3279{
2521 struct coro *current = SvSTATE_current; 3280 struct coro *current = SvSTATE_current;
2522 SV **throwp = self == current ? &coro_throw : &self->throw; 3281 SV **throwp = self == current ? &CORO_THROW : &self->except;
2523 SvREFCNT_dec (*throwp); 3282 SvREFCNT_dec (*throwp);
3283 SvGETMAGIC (throw);
2524 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3284 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2525} 3285}
2526 3286
2527void 3287void
2528api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3288api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
… …
2531 3291
2532SV * 3292SV *
2533has_cctx (Coro::State coro) 3293has_cctx (Coro::State coro)
2534 PROTOTYPE: $ 3294 PROTOTYPE: $
2535 CODE: 3295 CODE:
2536 RETVAL = boolSV (!!coro->cctx); 3296 /* maybe manage the running flag differently */
3297 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2537 OUTPUT: 3298 OUTPUT:
2538 RETVAL 3299 RETVAL
2539 3300
2540int 3301int
2541is_traced (Coro::State coro) 3302is_traced (Coro::State coro)
… …
2561 3322
2562void 3323void
2563force_cctx () 3324force_cctx ()
2564 PROTOTYPE: 3325 PROTOTYPE:
2565 CODE: 3326 CODE:
2566 SvSTATE_current->cctx->idle_sp = 0; 3327 cctx_current->idle_sp = 0;
2567 3328
2568void 3329void
2569swap_defsv (Coro::State self) 3330swap_defsv (Coro::State self)
2570 PROTOTYPE: $ 3331 PROTOTYPE: $
2571 ALIAS: 3332 ALIAS:
… …
2579 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3340 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2580 3341
2581 SV *tmp = *src; *src = *dst; *dst = tmp; 3342 SV *tmp = *src; *src = *dst; *dst = tmp;
2582 } 3343 }
2583 3344
3345void
3346cancel (Coro::State self)
3347 CODE:
3348 coro_state_destroy (aTHX_ self);
3349 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3350
3351
3352SV *
3353enable_times (int enabled = enable_times)
3354 CODE:
3355{
3356 RETVAL = boolSV (enable_times);
3357
3358 if (enabled != enable_times)
3359 {
3360 enable_times = enabled;
3361
3362 coro_times_update ();
3363 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3364 }
3365}
3366 OUTPUT:
3367 RETVAL
3368
3369void
3370times (Coro::State self)
3371 PPCODE:
3372{
3373 struct coro *current = SvSTATE (coro_current);
3374
3375 if (expect_false (current == self))
3376 {
3377 coro_times_update ();
3378 coro_times_add (SvSTATE (coro_current));
3379 }
3380
3381 EXTEND (SP, 2);
3382 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3383 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3384
3385 if (expect_false (current == self))
3386 coro_times_sub (SvSTATE (coro_current));
3387}
3388
3389void
3390swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3391 CODE:
3392{
3393 struct coro *current = SvSTATE_current;
3394
3395 if (current == coro)
3396 SWAP_SVS (current);
3397
3398 if (!coro->swap_sv)
3399 coro->swap_sv = newAV ();
3400
3401 av_push (coro->swap_sv, SvREFCNT_inc_NN (sv));
3402 av_push (coro->swap_sv, SvREFCNT_inc_NN (swapsv));
3403
3404 if (current == coro)
3405 SWAP_SVS (current);
3406}
3407
2584 3408
2585MODULE = Coro::State PACKAGE = Coro 3409MODULE = Coro::State PACKAGE = Coro
2586 3410
2587BOOT: 3411BOOT:
2588{ 3412{
2589 int i;
2590
2591 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2592 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3413 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2593 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3414 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2594 3415 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3416 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2595 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3417 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2596 SvREADONLY_on (coro_current); 3418 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3419 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3420 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3421 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2597 3422
3423 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3424 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3425 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3426 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3427
2598 coro_stash = gv_stashpv ("Coro", TRUE); 3428 coro_stash = gv_stashpv ("Coro", TRUE);
2599 3429
2600 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2601 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2602 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2603 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2604 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2605 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2606
2607 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2608 coro_ready[i] = newAV ();
2609 3436
2610 { 3437 {
2611 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3438 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2612 3439
2613 coroapi.schedule = api_schedule; 3440 coroapi.schedule = api_schedule;
3441 coroapi.schedule_to = api_schedule_to;
2614 coroapi.cede = api_cede; 3442 coroapi.cede = api_cede;
2615 coroapi.cede_notself = api_cede_notself; 3443 coroapi.cede_notself = api_cede_notself;
2616 coroapi.ready = api_ready; 3444 coroapi.ready = api_ready;
2617 coroapi.is_ready = api_is_ready; 3445 coroapi.is_ready = api_is_ready;
2618 coroapi.nready = coro_nready; 3446 coroapi.nready = coro_nready;
2619 coroapi.current = coro_current; 3447 coroapi.current = coro_current;
2620 3448
2621 GCoroAPI = &coroapi; 3449 /*GCoroAPI = &coroapi;*/
2622 sv_setiv (sv, (IV)&coroapi); 3450 sv_setiv (sv, (IV)&coroapi);
2623 SvREADONLY_on (sv); 3451 SvREADONLY_on (sv);
2624 } 3452 }
2625} 3453}
3454
3455SV *
3456async (...)
3457 PROTOTYPE: &@
3458 CODE:
3459 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3460 api_ready (aTHX_ RETVAL);
3461 OUTPUT:
3462 RETVAL
3463
3464void
3465terminate (...)
3466 CODE:
3467 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2626 3468
2627void 3469void
2628schedule (...) 3470schedule (...)
2629 CODE: 3471 CODE:
2630 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3473
3474void
3475schedule_to (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3478
3479void
3480cede_to (...)
3481 CODE:
3482 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2631 3483
2632void 3484void
2633cede (...) 3485cede (...)
2634 CODE: 3486 CODE:
2635 CORO_EXECUTE_SLF_XS (slf_init_cede); 3487 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2649void 3501void
2650_set_readyhook (SV *hook) 3502_set_readyhook (SV *hook)
2651 PROTOTYPE: $ 3503 PROTOTYPE: $
2652 CODE: 3504 CODE:
2653 SvREFCNT_dec (coro_readyhook); 3505 SvREFCNT_dec (coro_readyhook);
3506 SvGETMAGIC (hook);
3507 if (SvOK (hook))
3508 {
2654 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3509 coro_readyhook = newSVsv (hook);
3510 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3511 }
3512 else
3513 {
3514 coro_readyhook = 0;
3515 CORO_READYHOOK = 0;
3516 }
2655 3517
2656int 3518int
2657prio (Coro::State coro, int newprio = 0) 3519prio (Coro::State coro, int newprio = 0)
2658 PROTOTYPE: $;$ 3520 PROTOTYPE: $;$
2659 ALIAS: 3521 ALIAS:
… …
2665 if (items > 1) 3527 if (items > 1)
2666 { 3528 {
2667 if (ix) 3529 if (ix)
2668 newprio = coro->prio - newprio; 3530 newprio = coro->prio - newprio;
2669 3531
2670 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3532 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2671 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3533 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2672 3534
2673 coro->prio = newprio; 3535 coro->prio = newprio;
2674 } 3536 }
2675} 3537}
2676 OUTPUT: 3538 OUTPUT:
… …
2690 CODE: 3552 CODE:
2691 RETVAL = coro_nready; 3553 RETVAL = coro_nready;
2692 OUTPUT: 3554 OUTPUT:
2693 RETVAL 3555 RETVAL
2694 3556
2695# for async_pool speedup
2696void 3557void
2697_pool_1 (SV *cb) 3558suspend (Coro::State self)
3559 PROTOTYPE: $
2698 CODE: 3560 CODE:
2699{ 3561 self->flags |= CF_SUSPENDED;
2700 HV *hv = (HV *)SvRV (coro_current);
2701 struct coro *coro = SvSTATE_hv ((SV *)hv);
2702 AV *defav = GvAV (PL_defgv);
2703 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2704 AV *invoke_av;
2705 int i, len;
2706 3562
2707 if (!invoke) 3563void
3564resume (Coro::State self)
3565 PROTOTYPE: $
3566 CODE:
3567 self->flags &= ~CF_SUSPENDED;
3568
3569void
3570_pool_handler (...)
3571 CODE:
3572 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3573
3574void
3575async_pool (SV *cv, ...)
3576 PROTOTYPE: &@
3577 PPCODE:
3578{
3579 HV *hv = (HV *)av_pop (av_async_pool);
3580 AV *av = newAV ();
3581 SV *cb = ST (0);
3582 int i;
3583
3584 av_extend (av, items - 2);
3585 for (i = 1; i < items; ++i)
3586 av_push (av, SvREFCNT_inc_NN (ST (i)));
3587
3588 if ((SV *)hv == &PL_sv_undef)
2708 { 3589 {
2709 SV *old = PL_diehook; 3590 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2710 PL_diehook = 0; 3591 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2711 SvREFCNT_dec (old); 3592 SvREFCNT_dec (sv);
2712 croak ("\3async_pool terminate\2\n");
2713 } 3593 }
2714 3594
2715 SvREFCNT_dec (coro->saved_deffh);
2716 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2717
2718 hv_store (hv, "desc", sizeof ("desc") - 1,
2719 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2720
2721 invoke_av = (AV *)SvRV (invoke);
2722 len = av_len (invoke_av);
2723
2724 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2725
2726 if (len > 0)
2727 { 3595 {
2728 av_fill (defav, len - 1); 3596 struct coro *coro = SvSTATE_hv (hv);
2729 for (i = 0; i < len; ++i) 3597
2730 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3598 assert (!coro->invoke_cb);
3599 assert (!coro->invoke_av);
3600 coro->invoke_cb = SvREFCNT_inc (cb);
3601 coro->invoke_av = av;
2731 } 3602 }
3603
3604 api_ready (aTHX_ (SV *)hv);
3605
3606 if (GIMME_V != G_VOID)
3607 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3608 else
3609 SvREFCNT_dec (hv);
2732} 3610}
3611
3612SV *
3613rouse_cb ()
3614 PROTOTYPE:
3615 CODE:
3616 RETVAL = coro_new_rouse_cb (aTHX);
3617 OUTPUT:
3618 RETVAL
2733 3619
2734void 3620void
2735_pool_2 (SV *cb) 3621rouse_wait (...)
3622 PROTOTYPE: ;$
3623 PPCODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3625
3626void
3627on_enter (SV *block)
3628 ALIAS:
3629 on_leave = 1
3630 PROTOTYPE: &
2736 CODE: 3631 CODE:
2737{ 3632{
2738 HV *hv = (HV *)SvRV (coro_current);
2739 struct coro *coro = SvSTATE_hv ((SV *)hv); 3633 struct coro *coro = SvSTATE_current;
3634 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2740 3635
2741 sv_setsv (cb, &PL_sv_undef); 3636 block = s_get_cv_croak (block);
2742 3637
2743 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3638 if (!*avp)
2744 coro->saved_deffh = 0; 3639 *avp = newAV ();
2745 3640
2746 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3641 av_push (*avp, SvREFCNT_inc (block));
2747 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2748 {
2749 SV *old = PL_diehook;
2750 PL_diehook = 0;
2751 SvREFCNT_dec (old);
2752 croak ("\3async_pool terminate\2\n");
2753 }
2754 3642
2755 av_clear (GvAV (PL_defgv)); 3643 if (!ix)
2756 hv_store (hv, "desc", sizeof ("desc") - 1, 3644 on_enterleave_call (aTHX_ block);
2757 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2758 3645
2759 coro->prio = 0; 3646 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2760 3647 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2761 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3648 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2762 api_trace (aTHX_ coro_current, 0);
2763
2764 av_push (av_async_pool, newSVsv (coro_current));
2765} 3649}
2766 3650
2767 3651
2768MODULE = Coro::State PACKAGE = PerlIO::cede 3652MODULE = Coro::State PACKAGE = PerlIO::cede
2769 3653
… …
2772 3656
2773 3657
2774MODULE = Coro::State PACKAGE = Coro::Semaphore 3658MODULE = Coro::State PACKAGE = Coro::Semaphore
2775 3659
2776SV * 3660SV *
2777new (SV *klass, SV *count_ = 0) 3661new (SV *klass, SV *count = 0)
2778 CODE: 3662 CODE:
2779{ 3663{
2780 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3664 int semcnt = 1;
2781 AV *av = newAV ();
2782 SV **ary;
2783 3665
2784 /* unfortunately, building manually saves memory */ 3666 if (count)
2785 Newx (ary, 2, SV *); 3667 {
2786 AvALLOC (av) = ary; 3668 SvGETMAGIC (count);
2787 AvARRAY (av) = ary;
2788 AvMAX (av) = 1;
2789 AvFILLp (av) = 0;
2790 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2791 3669
2792 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3670 if (SvOK (count))
3671 semcnt = SvIV (count);
3672 }
3673
3674 RETVAL = sv_bless (
3675 coro_waitarray_new (aTHX_ semcnt),
3676 GvSTASH (CvGV (cv))
3677 );
2793} 3678}
3679 OUTPUT:
3680 RETVAL
3681
3682# helper for Coro::Channel and others
3683SV *
3684_alloc (int count)
3685 CODE:
3686 RETVAL = coro_waitarray_new (aTHX_ count);
2794 OUTPUT: 3687 OUTPUT:
2795 RETVAL 3688 RETVAL
2796 3689
2797SV * 3690SV *
2798count (SV *self) 3691count (SV *self)
… …
2807 adjust = 1 3700 adjust = 1
2808 CODE: 3701 CODE:
2809 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2810 3703
2811void 3704void
2812down (SV *self) 3705down (...)
2813 CODE: 3706 CODE:
2814 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3707 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3708
3709void
3710wait (...)
3711 CODE:
3712 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2815 3713
2816void 3714void
2817try (SV *self) 3715try (SV *self)
2818 PPCODE: 3716 PPCODE:
2819{ 3717{
… …
2831 XSRETURN_NO; 3729 XSRETURN_NO;
2832} 3730}
2833 3731
2834void 3732void
2835waiters (SV *self) 3733waiters (SV *self)
2836 CODE: 3734 PPCODE:
2837{ 3735{
2838 AV *av = (AV *)SvRV (self); 3736 AV *av = (AV *)SvRV (self);
3737 int wcount = AvFILLp (av) + 1 - 1;
2839 3738
2840 if (GIMME_V == G_SCALAR) 3739 if (GIMME_V == G_SCALAR)
2841 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3740 XPUSHs (sv_2mortal (newSViv (wcount)));
2842 else 3741 else
2843 { 3742 {
2844 int i; 3743 int i;
2845 EXTEND (SP, AvFILLp (av) + 1 - 1); 3744 EXTEND (SP, wcount);
2846 for (i = 1; i <= AvFILLp (av); ++i) 3745 for (i = 1; i <= wcount; ++i)
2847 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3746 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2848 } 3747 }
2849} 3748}
3749
3750MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3751
3752void
3753_may_delete (SV *sem, int count, int extra_refs)
3754 PPCODE:
3755{
3756 AV *av = (AV *)SvRV (sem);
3757
3758 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3759 && AvFILLp (av) == 0 /* no waiters, just count */
3760 && SvIV (AvARRAY (av)[0]) == count)
3761 XSRETURN_YES;
3762
3763 XSRETURN_NO;
3764}
3765
3766MODULE = Coro::State PACKAGE = Coro::Signal
3767
3768SV *
3769new (SV *klass)
3770 CODE:
3771 RETVAL = sv_bless (
3772 coro_waitarray_new (aTHX_ 0),
3773 GvSTASH (CvGV (cv))
3774 );
3775 OUTPUT:
3776 RETVAL
3777
3778void
3779wait (...)
3780 CODE:
3781 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3782
3783void
3784broadcast (SV *self)
3785 CODE:
3786{
3787 AV *av = (AV *)SvRV (self);
3788 coro_signal_wake (aTHX_ av, AvFILLp (av));
3789}
3790
3791void
3792send (SV *self)
3793 CODE:
3794{
3795 AV *av = (AV *)SvRV (self);
3796
3797 if (AvFILLp (av))
3798 coro_signal_wake (aTHX_ av, 1);
3799 else
3800 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3801}
3802
3803IV
3804awaited (SV *self)
3805 CODE:
3806 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3807 OUTPUT:
3808 RETVAL
2850 3809
2851 3810
2852MODULE = Coro::State PACKAGE = Coro::AnyEvent 3811MODULE = Coro::State PACKAGE = Coro::AnyEvent
2853 3812
2854BOOT: 3813BOOT:
… …
2882 3841
2883void 3842void
2884_register (char *target, char *proto, SV *req) 3843_register (char *target, char *proto, SV *req)
2885 CODE: 3844 CODE:
2886{ 3845{
2887 HV *st; 3846 SV *req_cv = s_get_cv_croak (req);
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */ 3847 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 3848 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto); 3849 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3850 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894} 3851}
2895 3852
3853MODULE = Coro::State PACKAGE = Coro::Select
3854
3855void
3856patch_pp_sselect ()
3857 CODE:
3858 if (!coro_old_pp_sselect)
3859 {
3860 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3861 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3862 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3863 }
3864
3865void
3866unpatch_pp_sselect ()
3867 CODE:
3868 if (coro_old_pp_sselect)
3869 {
3870 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3871 coro_old_pp_sselect = 0;
3872 }
3873
3874

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