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Comparing Coro/Coro/State.xs (file contents):
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC vs.
Revision 1.392 by root, Fri Apr 29 15:43:27 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
16 21
17#ifdef WIN32 22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
26#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 31# define setjmp _setjmp /* deep magic */
22#else 32#else
23# include <inttypes.h> /* most portable stdint.h */ 33# include <inttypes.h> /* most portable stdint.h */
24#endif 34#endif
25 35
26#ifdef HAVE_MMAP 36#ifdef HAVE_MMAP
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
108#endif 68#endif
109 69
110#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
117#endif 77#endif
118 78
119/* The next macros try to return the current stack pointer, in an as 79/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 80 * portable way as possible. */
121#if __GNUC__ >= 4 81#if __GNUC__ >= 4
82# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 83# define STACKLEVEL __builtin_frame_address (0)
123#else 84#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
86# define STACKLEVEL ((void *)&stacklevel)
125#endif 87#endif
126 88
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
128 90
129#if __GNUC__ >= 3 91#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 94# define INLINE static inline
133#else 95#else
134# define attribute(x) 96# define attribute(x)
135# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
136# define INLINE static 98# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 102#define expect_true(expr) expect ((expr) != 0, 1)
141 103
142#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
143 105
144#include "CoroAPI.h" 106#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */
145 108
146#ifdef USE_ITHREADS 109#ifdef USE_ITHREADS
147# if CORO_PTHREAD 110# if CORO_PTHREAD
148static void *coro_thx; 111static void *coro_thx;
149# endif 112# endif
150#endif 113#endif
151 114
152/* helper storage struct for Coro::AIO */ 115#ifdef __linux
153struct io_state 116# include <time.h> /* for timespec */
154{ 117# include <syscall.h> /* for SYS_* */
155 AV *res; 118# ifdef SYS_clock_gettime
156 int errorno; 119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 120# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 122# endif
160}; 123#endif
161 124
162static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
127
128/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX);
163 131
164static U32 cctx_gen; 132static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 133static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 134static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 135static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 136static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 137static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 138static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 139
140static AV *av_destroy; /* destruction queue */
141static SV *sv_manager; /* the manager coro */
142static SV *sv_idle; /* $Coro::idle */
143
172static GV *irsgv; /* $/ */ 144static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 145static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 146static SV *rv_diehook;
175static SV *rv_warnhook; 147static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 148static HV *hv_sig; /* %SIG */
177 149
178/* async_pool helper stuff */ 150/* async_pool helper stuff */
179static SV *sv_pool_rss; 151static SV *sv_pool_rss;
180static SV *sv_pool_size; 152static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 154static AV *av_async_pool; /* idle pool */
155static SV *sv_Coro; /* class string */
156static CV *cv_pool_handler;
182 157
183/* Coro::AnyEvent */ 158/* Coro::AnyEvent */
184static SV *sv_activity; 159static SV *sv_activity;
160
161/* enable processtime/realtime profiling */
162static char enable_times;
163typedef U32 coro_ts[2];
164static coro_ts time_real, time_cpu;
165static char times_valid;
185 166
186static struct coro_cctx *cctx_first; 167static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 168static int cctx_count, cctx_idle;
188 169
189enum { 170enum {
… …
215 int valgrind_id; 196 int valgrind_id;
216#endif 197#endif
217 unsigned char flags; 198 unsigned char flags;
218} coro_cctx; 199} coro_cctx;
219 200
201coro_cctx *cctx_current; /* the currently running cctx */
202
203/*****************************************************************************/
204
220enum { 205enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 206 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 207 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 208 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 211};
226 212
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 213/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 214typedef struct
229{ 215{
230 SV *defsv; 216 SV *defsv;
231 AV *defav; 217 AV *defav;
232 SV *errsv; 218 SV *errsv;
233 SV *irsgv; 219 SV *irsgv;
220 HV *hinthv;
234#define VAR(name,type) type name; 221#define VAR(name,type) type name;
235# include "state.h" 222# include "state.h"
236#undef VAR 223#undef VAR
237} perl_slots; 224} perl_slots;
238 225
… …
241/* this is a structure representing a perl-level coroutine */ 228/* this is a structure representing a perl-level coroutine */
242struct coro { 229struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 230 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 231 coro_cctx *cctx;
245 232
233 /* ready queue */
234 struct coro *next_ready;
235
246 /* state data */ 236 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 237 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 238 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
250 240
241 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 242 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 243 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 244 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 245 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 246 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
256 247
257 /* statistics */ 248 /* statistics */
258 int usecount; /* number of transfers to this coro */ 249 int usecount; /* number of transfers to this coro */
259 250
260 /* coro process data */ 251 /* coro process data */
261 int prio; 252 int prio;
262 SV *throw; /* exception to be thrown */ 253 SV *except; /* exception to be thrown */
254 SV *rouse_cb;
263 255
264 /* async_pool */ 256 /* async_pool */
265 SV *saved_deffh; 257 SV *saved_deffh;
258 SV *invoke_cb;
259 AV *invoke_av;
260
261 /* on_enter/on_leave */
262 AV *on_enter;
263 AV *on_leave;
264
265 /* swap_sv */
266 AV *swap_sv;
267
268 /* times */
269 coro_ts t_cpu, t_real;
266 270
267 /* linked list */ 271 /* linked list */
268 struct coro *next, *prev; 272 struct coro *next, *prev;
269}; 273};
270 274
… …
273 277
274/* the following variables are effectively part of the perl context */ 278/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 279/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 280/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 281static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 282
280/** Coro ********************************************************************/ 283/** Coro ********************************************************************/
281 284
282#define PRIO_MAX 3 285#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 286#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 287#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 288#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 289#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 290#define CORO_PRIO_MIN -4
288 291
289/* for Coro.pm */ 292/* for Coro.pm */
290static SV *coro_current; 293static SV *coro_current;
291static SV *coro_readyhook; 294static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 295static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
296static CV *cv_coro_run, *cv_coro_terminate;
293static struct coro *coro_first; 297static struct coro *coro_first;
294#define coro_nready coroapi.nready 298#define coro_nready coroapi.nready
299
300/** Coro::Select ************************************************************/
301
302static OP *(*coro_old_pp_sselect) (pTHX);
303static SV *coro_select_select;
304
305/* horrible hack, but if it works... */
306static OP *
307coro_pp_sselect (pTHX)
308{
309 dSP;
310 PUSHMARK (SP - 4); /* fake argument list */
311 XPUSHs (coro_select_select);
312 PUTBACK;
313
314 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
315 PL_op->op_flags |= OPf_STACKED;
316 PL_op->op_private = 0;
317 return PL_ppaddr [OP_ENTERSUB](aTHX);
318}
319
320/** time stuff **************************************************************/
321
322#ifdef HAS_GETTIMEOFDAY
323
324static void
325coro_u2time (pTHX_ UV ret[2])
326{
327 struct timeval tv;
328 gettimeofday (&tv, 0);
329
330 ret [0] = tv.tv_sec;
331 ret [1] = tv.tv_usec;
332}
333
334static double
335coro_nvtime ()
336{
337 struct timeval tv;
338 gettimeofday (&tv, 0);
339
340 return tv.tv_sec + tv.tv_usec * 1e-6;
341}
342
343static void
344time_init (pTHX)
345{
346 nvtime = coro_nvtime;
347 u2time = coro_u2time;
348}
349
350#else
351
352static void
353time_init (pTHX)
354{
355 SV **svp;
356
357 require_pv ("Time/HiRes.pm");
358
359 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
360
361 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
362 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
363
364 nvtime = INT2PTR (double (*)(), SvIV (*svp));
365
366 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
367 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
368}
369
370#endif
295 371
296/** lowlevel stuff **********************************************************/ 372/** lowlevel stuff **********************************************************/
297 373
298static SV * 374static SV *
299coro_get_sv (pTHX_ const char *name, int create) 375coro_get_sv (pTHX_ const char *name, int create)
… …
323 get_hv (name, create); 399 get_hv (name, create);
324#endif 400#endif
325 return get_hv (name, create); 401 return get_hv (name, create);
326} 402}
327 403
404INLINE void
405coro_times_update ()
406{
407#ifdef coro_clock_gettime
408 struct timespec ts;
409
410 ts.tv_sec = ts.tv_nsec = 0;
411 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
412 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
413
414 ts.tv_sec = ts.tv_nsec = 0;
415 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
416 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
417#else
418 dTHX;
419 UV tv[2];
420
421 u2time (aTHX_ tv);
422 time_real [0] = tv [0];
423 time_real [1] = tv [1] * 1000;
424#endif
425}
426
427INLINE void
428coro_times_add (struct coro *c)
429{
430 c->t_real [1] += time_real [1];
431 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
432 c->t_real [0] += time_real [0];
433
434 c->t_cpu [1] += time_cpu [1];
435 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
436 c->t_cpu [0] += time_cpu [0];
437}
438
439INLINE void
440coro_times_sub (struct coro *c)
441{
442 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
443 c->t_real [1] -= time_real [1];
444 c->t_real [0] -= time_real [0];
445
446 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
447 c->t_cpu [1] -= time_cpu [1];
448 c->t_cpu [0] -= time_cpu [0];
449}
450
451/*****************************************************************************/
452/* magic glue */
453
454#define CORO_MAGIC_type_cv 26
455#define CORO_MAGIC_type_state PERL_MAGIC_ext
456
457#define CORO_MAGIC_NN(sv, type) \
458 (expect_true (SvMAGIC (sv)->mg_type == type) \
459 ? SvMAGIC (sv) \
460 : mg_find (sv, type))
461
462#define CORO_MAGIC(sv, type) \
463 (expect_true (SvMAGIC (sv)) \
464 ? CORO_MAGIC_NN (sv, type) \
465 : 0)
466
467#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
468#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
469
470INLINE struct coro *
471SvSTATE_ (pTHX_ SV *coro)
472{
473 HV *stash;
474 MAGIC *mg;
475
476 if (SvROK (coro))
477 coro = SvRV (coro);
478
479 if (expect_false (SvTYPE (coro) != SVt_PVHV))
480 croak ("Coro::State object required");
481
482 stash = SvSTASH (coro);
483 if (expect_false (stash != coro_stash && stash != coro_state_stash))
484 {
485 /* very slow, but rare, check */
486 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
487 croak ("Coro::State object required");
488 }
489
490 mg = CORO_MAGIC_state (coro);
491 return (struct coro *)mg->mg_ptr;
492}
493
494#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
495
496/* faster than SvSTATE, but expects a coroutine hv */
497#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
498#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
499
500/*****************************************************************************/
501/* padlist management and caching */
502
328static AV * 503static AV *
329coro_clone_padlist (pTHX_ CV *cv) 504coro_derive_padlist (pTHX_ CV *cv)
330{ 505{
331 AV *padlist = CvPADLIST (cv); 506 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 507 AV *newpadlist, *newpad;
333 508
334 newpadlist = newAV (); 509 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 514 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 515#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 516 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 517 --AvFILLp (padlist);
343 518
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 519 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 520 av_store (newpadlist, 1, (SV *)newpad);
346 521
347 return newpadlist; 522 return newpadlist;
348} 523}
349 524
350static void 525static void
351free_padlist (pTHX_ AV *padlist) 526free_padlist (pTHX_ AV *padlist)
352{ 527{
353 /* may be during global destruction */ 528 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 529 if (!IN_DESTRUCT)
355 { 530 {
356 I32 i = AvFILLp (padlist); 531 I32 i = AvFILLp (padlist);
357 while (i >= 0) 532
533 while (i > 0) /* special-case index 0 */
358 { 534 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 535 /* we try to be extra-careful here */
360 if (svp) 536 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 537 I32 j = AvFILLp (av);
362 SV *sv; 538
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 539 while (j >= 0)
540 SvREFCNT_dec (AvARRAY (av)[j--]);
541
542 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 543 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 544 }
369 545
546 SvREFCNT_dec (AvARRAY (padlist)[0]);
547
548 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 549 SvREFCNT_dec ((SV*)padlist);
371 } 550 }
372} 551}
373 552
374static int 553static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 554coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 555{
377 AV *padlist; 556 AV *padlist;
378 AV *av = (AV *)mg->mg_obj; 557 AV *av = (AV *)mg->mg_obj;
558
559 /* perl manages to free our internal AV and _then_ call us */
560 if (IN_DESTRUCT)
561 return 0;
379 562
380 /* casting is fun. */ 563 /* casting is fun. */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 564 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
382 free_padlist (aTHX_ padlist); 565 free_padlist (aTHX_ padlist);
383 566
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 567 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 568
386 return 0; 569 return 0;
387} 570}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 571
392static MGVTBL coro_cv_vtbl = { 572static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 573 0, 0, 0, 0,
394 coro_cv_free 574 coro_cv_free
395}; 575};
396
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445 576
446/* the next two functions merely cache the padlists */ 577/* the next two functions merely cache the padlists */
447static void 578static void
448get_padlist (pTHX_ CV *cv) 579get_padlist (pTHX_ CV *cv)
449{ 580{
… …
455 else 586 else
456 { 587 {
457#if CORO_PREFER_PERL_FUNCTIONS 588#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 589 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 590 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 591 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 592 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 593 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 594 SvREFCNT_dec (cp);
464#else 595#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 596 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 597#endif
467 } 598 }
468} 599}
469 600
470static void 601static void
… …
477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 608 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
478 609
479 av = (AV *)mg->mg_obj; 610 av = (AV *)mg->mg_obj;
480 611
481 if (expect_false (AvFILLp (av) >= AvMAX (av))) 612 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1); 613 av_extend (av, AvFILLp (av) + 1);
483 614
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 615 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 616}
486 617
487/** load & save, init *******************************************************/ 618/** load & save, init *******************************************************/
619
620/* swap sv heads, at least logically */
621static void
622swap_svs (pTHX_ Coro__State c)
623{
624 int i;
625
626 for (i = 0; i <= AvFILLp (c->swap_sv); )
627 {
628 SV *a = AvARRAY (c->swap_sv)[i++];
629 SV *b = AvARRAY (c->swap_sv)[i++];
630
631 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
632 SV tmp;
633
634 /* swap sv_any */
635 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
636
637 /* swap sv_flags */
638 SvFLAGS (&tmp) = SvFLAGS (a);
639 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
640 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
641
642#if PERL_VERSION_ATLEAST (5,10,0)
643 /* perl 5.10 complicates this _quite_ a bit, but it also is
644 * much faster, so no quarrels here. alternatively, we could
645 * sv_upgrade to avoid this.
646 */
647 {
648 /* swap sv_u */
649 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
650
651 /* if SvANY points to the head, we need to adjust the pointers,
652 * as the pointer for a still points to b, and maybe vice versa.
653 */
654 #define svany_in_head(type) \
655 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
656
657 if (svany_in_head (SvTYPE (a)))
658 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
659
660 if (svany_in_head (SvTYPE (b)))
661 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
662 }
663#endif
664 }
665}
666
667#define SWAP_SVS(coro) \
668 if (expect_false ((coro)->swap_sv)) \
669 swap_svs (aTHX_ (coro))
670
671static void
672on_enterleave_call (pTHX_ SV *cb);
488 673
489static void 674static void
490load_perl (pTHX_ Coro__State c) 675load_perl (pTHX_ Coro__State c)
491{ 676{
492 perl_slots *slot = c->slot; 677 perl_slots *slot = c->slot;
493 c->slot = 0; 678 c->slot = 0;
494 679
495 PL_mainstack = c->mainstack; 680 PL_mainstack = c->mainstack;
496 681
497 GvSV (PL_defgv) = slot->defsv; 682 GvSV (PL_defgv) = slot->defsv;
498 GvAV (PL_defgv) = slot->defav; 683 GvAV (PL_defgv) = slot->defav;
499 GvSV (PL_errgv) = slot->errsv; 684 GvSV (PL_errgv) = slot->errsv;
500 GvSV (irsgv) = slot->irsgv; 685 GvSV (irsgv) = slot->irsgv;
686 GvHV (PL_hintgv) = slot->hinthv;
501 687
502 #define VAR(name,type) PL_ ## name = slot->name; 688 #define VAR(name,type) PL_ ## name = slot->name;
503 # include "state.h" 689 # include "state.h"
504 #undef VAR 690 #undef VAR
505 691
… …
518 704
519 PUTBACK; 705 PUTBACK;
520 } 706 }
521 707
522 slf_frame = c->slf_frame; 708 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 709 CORO_THROW = c->except;
710
711 if (expect_false (enable_times))
712 {
713 if (expect_false (!times_valid))
714 coro_times_update ();
715
716 coro_times_sub (c);
717 }
718
719 if (expect_false (c->on_enter))
720 {
721 int i;
722
723 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
724 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
725 }
726
727 SWAP_SVS (c);
524} 728}
525 729
526static void 730static void
527save_perl (pTHX_ Coro__State c) 731save_perl (pTHX_ Coro__State c)
528{ 732{
529 c->throw = coro_throw; 733 SWAP_SVS (c);
734
735 if (expect_false (c->on_leave))
736 {
737 int i;
738
739 for (i = AvFILLp (c->on_leave); i >= 0; --i)
740 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
741 }
742
743 times_valid = 0;
744
745 if (expect_false (enable_times))
746 {
747 coro_times_update (); times_valid = 1;
748 coro_times_add (c);
749 }
750
751 c->except = CORO_THROW;
530 c->slf_frame = slf_frame; 752 c->slf_frame = slf_frame;
531 753
532 { 754 {
533 dSP; 755 dSP;
534 I32 cxix = cxstack_ix; 756 I32 cxix = cxstack_ix;
… …
546 { 768 {
547 while (expect_true (cxix >= 0)) 769 while (expect_true (cxix >= 0))
548 { 770 {
549 PERL_CONTEXT *cx = &ccstk[cxix--]; 771 PERL_CONTEXT *cx = &ccstk[cxix--];
550 772
551 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 773 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
552 { 774 {
553 CV *cv = cx->blk_sub.cv; 775 CV *cv = cx->blk_sub.cv;
554 776
555 if (expect_true (CvDEPTH (cv))) 777 if (expect_true (CvDEPTH (cv)))
556 { 778 {
… …
580 /* we manually unroll here, as usually 2 slots is enough */ 802 /* we manually unroll here, as usually 2 slots is enough */
581 if (SLOT_COUNT >= 1) CXINC; 803 if (SLOT_COUNT >= 1) CXINC;
582 if (SLOT_COUNT >= 2) CXINC; 804 if (SLOT_COUNT >= 2) CXINC;
583 if (SLOT_COUNT >= 3) CXINC; 805 if (SLOT_COUNT >= 3) CXINC;
584 { 806 {
585 int i; 807 unsigned int i;
586 for (i = 3; i < SLOT_COUNT; ++i) 808 for (i = 3; i < SLOT_COUNT; ++i)
587 CXINC; 809 CXINC;
588 } 810 }
589 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 811 cxstack_ix -= SLOT_COUNT; /* undo allocation */
590 812
591 c->mainstack = PL_mainstack; 813 c->mainstack = PL_mainstack;
592 814
593 { 815 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 816 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 817
596 slot->defav = GvAV (PL_defgv); 818 slot->defav = GvAV (PL_defgv);
597 slot->defsv = DEFSV; 819 slot->defsv = DEFSV;
598 slot->errsv = ERRSV; 820 slot->errsv = ERRSV;
599 slot->irsgv = GvSV (irsgv); 821 slot->irsgv = GvSV (irsgv);
822 slot->hinthv = GvHV (PL_hintgv);
600 823
601 #define VAR(name,type) slot->name = PL_ ## name; 824 #define VAR(name,type) slot->name = PL_ ## name;
602 # include "state.h" 825 # include "state.h"
603 #undef VAR 826 #undef VAR
604 } 827 }
… …
609 * of perl.c:init_stacks, except that it uses less memory 832 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 833 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 834 * not usually need a lot of stackspace.
612 */ 835 */
613#if CORO_PREFER_PERL_FUNCTIONS 836#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 837# define coro_init_stacks(thx) init_stacks ()
615#else 838#else
616static void 839static void
617coro_init_stacks (pTHX) 840coro_init_stacks (pTHX)
618{ 841{
619 PL_curstackinfo = new_stackinfo(32, 8); 842 PL_curstackinfo = new_stackinfo(32, 8);
… …
682#if !PERL_VERSION_ATLEAST (5,10,0) 905#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 906 Safefree (PL_retstack);
684#endif 907#endif
685} 908}
686 909
910#define CORO_RSS \
911 rss += sizeof (SYM (curstackinfo)); \
912 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
913 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
914 rss += SYM (tmps_max) * sizeof (SV *); \
915 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
916 rss += SYM (scopestack_max) * sizeof (I32); \
917 rss += SYM (savestack_max) * sizeof (ANY);
918
687static size_t 919static size_t
688coro_rss (pTHX_ struct coro *coro) 920coro_rss (pTHX_ struct coro *coro)
689{ 921{
690 size_t rss = sizeof (*coro); 922 size_t rss = sizeof (*coro);
691 923
692 if (coro->mainstack) 924 if (coro->mainstack)
693 { 925 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 926 if (coro->flags & CF_RUNNING)
698 { 927 {
699 slot = &tmp_slot; 928 #define SYM(sym) PL_ ## sym
700 929 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 930 #undef SYM
704 } 931 }
705 else 932 else
706 slot = coro->slot;
707
708 if (slot)
709 { 933 {
710 rss += sizeof (slot->curstackinfo); 934 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 935 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 936 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 937 }
722 } 938 }
723 939
724 return rss; 940 return rss;
725} 941}
… …
738#endif 954#endif
739 955
740/* 956/*
741 * This overrides the default magic get method of %SIG elements. 957 * This overrides the default magic get method of %SIG elements.
742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 958 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
743 * and instead of tryign to save and restore the hash elements, we just provide 959 * and instead of trying to save and restore the hash elements, we just provide
744 * readback here. 960 * readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 961 */
749static int 962static int
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 963coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 964{
752 const char *s = MgPV_nolen_const (mg); 965 const char *s = MgPV_nolen_const (mg);
… …
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1018 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806 1019
807 if (svp) 1020 if (svp)
808 { 1021 {
809 SV *old = *svp; 1022 SV *old = *svp;
810 *svp = newSVsv (sv); 1023 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 1024 SvREFCNT_dec (old);
812 return 0; 1025 return 0;
813 } 1026 }
814 } 1027 }
815 1028
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 1040slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 1041{
829 return 0; 1042 return 0;
830} 1043}
831 1044
1045static int
1046slf_check_repeat (pTHX_ struct CoroSLF *frame)
1047{
1048 return 1;
1049}
1050
1051static UNOP init_perl_op;
1052
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1053static void NOINLINE /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 1054init_perl (pTHX_ struct coro *coro)
834{ 1055{
835 /* 1056 /*
836 * emulate part of the perl startup here. 1057 * emulate part of the perl startup here.
837 */ 1058 */
838 coro_init_stacks (aTHX); 1059 coro_init_stacks (aTHX);
839 1060
840 PL_runops = RUNOPS_DEFAULT; 1061 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 1062 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 1063 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 1064 PL_comppad = 0;
1065 PL_comppad_name = 0;
1066 PL_comppad_name_fill = 0;
1067 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 1068 PL_curpm = 0;
845 PL_curpad = 0; 1069 PL_curpad = 0;
846 PL_localizing = 0; 1070 PL_localizing = 0;
847 PL_dirty = 0;
848 PL_restartop = 0; 1071 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 1072#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 1073 PL_parser = 0;
851#endif 1074#endif
1075 PL_hints = 0;
852 1076
853 /* recreate the die/warn hooks */ 1077 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1078 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1079 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
856 1080
857 GvSV (PL_defgv) = newSV (0); 1081 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 1082 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 1083 GvSV (PL_errgv) = newSV (0);
860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1084 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1085 GvHV (PL_hintgv) = 0;
861 PL_rs = newSVsv (GvSV (irsgv)); 1086 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1087 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 1088
864 { 1089 {
865 dSP; 1090 dSP;
866 UNOP myop; 1091 UNOP myop;
867 1092
868 Zero (&myop, 1, UNOP); 1093 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 1094 myop.op_next = Nullop;
1095 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 1096 myop.op_flags = OPf_WANT_VOID;
871 1097
872 PUSHMARK (SP); 1098 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1099 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 1100 PUTBACK;
875 PL_op = (OP *)&myop; 1101 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1102 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 1103 }
879 1104
880 /* this newly created coroutine might be run on an existing cctx which most 1105 /* this newly created coroutine might be run on an existing cctx which most
881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1106 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */ 1107 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1108 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1109 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
885 1110
886 coro_throw = coro->throw; 1111 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 1112 init_perl_op.op_next = PL_op;
1113 init_perl_op.op_type = OP_ENTERSUB;
1114 init_perl_op.op_ppaddr = pp_slf;
1115 /* no flags etc. required, as an init function won't be called */
888 1116
1117 PL_op = (OP *)&init_perl_op;
1118
1119 /* copy throw, in case it was set before init_perl */
1120 CORO_THROW = coro->except;
1121
1122 SWAP_SVS (coro);
1123
1124 if (expect_false (enable_times))
1125 {
1126 coro_times_update ();
1127 coro_times_sub (coro);
1128 }
1129}
1130
889static void 1131static void
890coro_destruct (pTHX_ struct coro *coro) 1132coro_unwind_stacks (pTHX)
891{ 1133{
892 if (!IN_DESTRUCT) 1134 if (!IN_DESTRUCT)
893 { 1135 {
894 /* restore all saved variables and stuff */ 1136 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 1137 LEAVE_SCOPE (0);
… …
903 POPSTACK_TO (PL_mainstack); 1145 POPSTACK_TO (PL_mainstack);
904 1146
905 /* unwind main stack */ 1147 /* unwind main stack */
906 dounwind (-1); 1148 dounwind (-1);
907 } 1149 }
1150}
908 1151
909 SvREFCNT_dec (GvSV (PL_defgv)); 1152static void
910 SvREFCNT_dec (GvAV (PL_defgv)); 1153destroy_perl (pTHX_ struct coro *coro)
911 SvREFCNT_dec (GvSV (PL_errgv)); 1154{
912 SvREFCNT_dec (PL_defoutgv); 1155 SV *svf [9];
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915 1156
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918 1157 {
1158 struct coro *current = SvSTATE_current;
1159
1160 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1161
1162 save_perl (aTHX_ current);
1163 load_perl (aTHX_ coro);
1164
1165 coro_unwind_stacks (aTHX);
1166 coro_destruct_stacks (aTHX);
1167
1168 /* restore swapped sv's */
1169 SWAP_SVS (coro);
1170
1171 // now save some sv's to be free'd later
1172 svf [0] = GvSV (PL_defgv);
1173 svf [1] = (SV *)GvAV (PL_defgv);
1174 svf [2] = GvSV (PL_errgv);
1175 svf [3] = (SV *)PL_defoutgv;
1176 svf [4] = PL_rs;
1177 svf [5] = GvSV (irsgv);
1178 svf [6] = (SV *)GvHV (PL_hintgv);
1179 svf [7] = PL_diehook;
1180 svf [8] = PL_warnhook;
1181 assert (9 == sizeof (svf) / sizeof (*svf));
1182
1183 load_perl (aTHX_ current);
1184 }
1185
1186 {
1187 unsigned int i;
1188
1189 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1190 SvREFCNT_dec (svf [i]);
1191
919 SvREFCNT_dec (coro->saved_deffh); 1192 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1193 SvREFCNT_dec (coro->rouse_cb);
921 1194 SvREFCNT_dec (coro->invoke_cb);
922 coro_destruct_stacks (aTHX); 1195 SvREFCNT_dec (coro->invoke_av);
1196 }
923} 1197}
924 1198
925INLINE void 1199INLINE void
926free_coro_mortal (pTHX) 1200free_coro_mortal (pTHX)
927{ 1201{
… …
935static int 1209static int
936runops_trace (pTHX) 1210runops_trace (pTHX)
937{ 1211{
938 COP *oldcop = 0; 1212 COP *oldcop = 0;
939 int oldcxix = -2; 1213 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1214
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1215 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1216 {
945 PERL_ASYNC_CHECK (); 1217 PERL_ASYNC_CHECK ();
946 1218
947 if (cctx->flags & CC_TRACE_ALL) 1219 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1220 {
949 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1221 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
950 { 1222 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1223 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1224 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1225 AV *av = newAV (); /* return values */
954 SV **cb; 1226 SV **cb;
… …
991 1263
992 if (PL_curcop != &PL_compiling) 1264 if (PL_curcop != &PL_compiling)
993 { 1265 {
994 SV **cb; 1266 SV **cb;
995 1267
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1268 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1269 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1270 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1271
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1272 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1273 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1274 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1275 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1276 SV *fullname = sv_2mortal (newSV (0));
1006 1277
1007 if (isGV (gv)) 1278 if (isGV (gv))
… …
1012 SAVETMPS; 1283 SAVETMPS;
1013 EXTEND (SP, 3); 1284 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1285 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1286 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1287 PUSHs (fullname);
1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1288 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018 PUTBACK; 1289 PUTBACK;
1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1290 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1291 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021 SPAGAIN; 1292 SPAGAIN;
1022 FREETMPS; 1293 FREETMPS;
… …
1025 } 1296 }
1026 1297
1027 oldcxix = cxstack_ix; 1298 oldcxix = cxstack_ix;
1028 } 1299 }
1029 1300
1030 if (cctx->flags & CC_TRACE_LINE) 1301 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1302 {
1032 dSP; 1303 dSP;
1033 1304
1034 PL_runops = RUNOPS_DEFAULT; 1305 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1306 ENTER;
… …
1054 1325
1055 TAINT_NOT; 1326 TAINT_NOT;
1056 return 0; 1327 return 0;
1057} 1328}
1058 1329
1330static struct CoroSLF cctx_ssl_frame;
1331
1059static void 1332static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1333slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1334{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1335 ta->prev = 0;
1064} 1336}
1065 1337
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1338static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1339slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */ 1340{
1069/* also initialises PL_top_env */ 1341 *frame = cctx_ssl_frame;
1342
1343 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1344}
1345
1346/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1070static void NOINLINE 1347static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx) 1348cctx_prepare (pTHX)
1072{ 1349{
1073 dSP;
1074 UNOP myop;
1075
1076 PL_top_env = &PL_start_env; 1350 PL_top_env = &PL_start_env;
1077 1351
1078 if (cctx->flags & CC_TRACE) 1352 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1353 PL_runops = runops_trace;
1080 1354
1081 Zero (&myop, 1, UNOP); 1355 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1356 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1357 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1358 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1359
1085 PUSHMARK (SP); 1360 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1361 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1362
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1363 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1364 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1365}
1094 1366
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1367/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1368INLINE void
1097transfer_tail (pTHX) 1369transfer_tail (pTHX)
… …
1116 /* normally we would need to skip the entersub here */ 1388 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1389 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1390 /* PL_nop = PL_nop->op_next */
1119 1391
1120 /* inject a fake subroutine call to cctx_init */ 1392 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1393 cctx_prepare (aTHX);
1122 1394
1123 /* cctx_run is the alternative tail of transfer() */ 1395 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1396 transfer_tail (aTHX);
1125 1397
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1398 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1399 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1400 perl_run (PL_curinterp);
1401 /*
1402 * Unfortunately, there is no way to get at the return values of the
1403 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1404 * runtime errors here, as this is just a random interpreter, not a thread.
1405 */
1129 1406
1130 /* 1407 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1408 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1409 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1410 * reason for perl_run to return. We try to exit by jumping to the
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1411 * bootstrap-time "top" top_env, as we cannot restore the "main"
1135 * coroutine as Coro has no such concept 1412 * coroutine as Coro has no such concept.
1413 * This actually isn't valid with the pthread backend, but OSes requiring
1414 * that backend are too broken to do it in a standards-compliant way.
1136 */ 1415 */
1137 PL_top_env = main_top_env; 1416 PL_top_env = main_top_env;
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1417 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1418 }
1140} 1419}
… …
1217cctx_destroy (coro_cctx *cctx) 1496cctx_destroy (coro_cctx *cctx)
1218{ 1497{
1219 if (!cctx) 1498 if (!cctx)
1220 return; 1499 return;
1221 1500
1501 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1502
1222 --cctx_count; 1503 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1504 coro_destroy (&cctx->cctx);
1224 1505
1225 /* coro_transfer creates new, empty cctx's */ 1506 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1507 if (cctx->sptr)
… …
1289 /* TODO: throwing up here is considered harmful */ 1570 /* TODO: throwing up here is considered harmful */
1290 1571
1291 if (expect_true (prev != next)) 1572 if (expect_true (prev != next))
1292 { 1573 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1574 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1575 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1295 1576
1296 if (expect_false (next->flags & CF_RUNNING))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED)) 1577 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1578 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1301 1579
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1580#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1581 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1582 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif 1583#endif
… …
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1589transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1590{
1313 dSTACKLEVEL; 1591 dSTACKLEVEL;
1314 1592
1315 /* sometimes transfer is only called to set idle_sp */ 1593 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1594 if (expect_false (!prev))
1317 { 1595 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1596 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1597 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1598 }
1321 else if (expect_true (prev != next)) 1599 else if (expect_true (prev != next))
1322 { 1600 {
1323 coro_cctx *prev__cctx; 1601 coro_cctx *cctx_prev;
1324 1602
1325 if (expect_false (prev->flags & CF_NEW)) 1603 if (expect_false (prev->flags & CF_NEW))
1326 { 1604 {
1327 /* create a new empty/source context */ 1605 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1606 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1607 prev->flags |= CF_RUNNING;
1331 } 1608 }
1332 1609
1333 prev->flags &= ~CF_RUNNING; 1610 prev->flags &= ~CF_RUNNING;
… …
1339 if (expect_false (next->flags & CF_NEW)) 1616 if (expect_false (next->flags & CF_NEW))
1340 { 1617 {
1341 /* need to start coroutine */ 1618 /* need to start coroutine */
1342 next->flags &= ~CF_NEW; 1619 next->flags &= ~CF_NEW;
1343 /* setup coroutine call */ 1620 /* setup coroutine call */
1344 coro_setup (aTHX_ next); 1621 init_perl (aTHX_ next);
1345 } 1622 }
1346 else 1623 else
1347 load_perl (aTHX_ next); 1624 load_perl (aTHX_ next);
1348 1625
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1626 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1627 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1628 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1629 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1630 && !force_cctx
1356 )) 1631 ))
1357 { 1632 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1633 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1634 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1635
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1636 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1637 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1638 if (expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1639 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1640 next->cctx = cctx_get (aTHX);
1368 1641
1369 cctx_put (prev__cctx); 1642 cctx_put (cctx_current);
1370 } 1643 }
1644 else
1645 prev->cctx = cctx_current;
1371 1646
1372 ++next->usecount; 1647 ++next->usecount;
1373 1648
1374 if (expect_true (!next->cctx)) 1649 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1650 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1651
1377 if (expect_false (prev__cctx != next->cctx)) 1652 next->cctx = 0;
1653
1654 if (expect_false (cctx_prev != cctx_current))
1378 { 1655 {
1379 prev__cctx->top_env = PL_top_env; 1656 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1657 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1658 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1659 }
1383 1660
1384 transfer_tail (aTHX); 1661 transfer_tail (aTHX);
1385 } 1662 }
1386} 1663}
… …
1394coro_state_destroy (pTHX_ struct coro *coro) 1671coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1672{
1396 if (coro->flags & CF_DESTROYED) 1673 if (coro->flags & CF_DESTROYED)
1397 return 0; 1674 return 0;
1398 1675
1399 if (coro->on_destroy) 1676 if (coro->on_destroy && !PL_dirty)
1400 coro->on_destroy (aTHX_ coro); 1677 coro->on_destroy (aTHX_ coro);
1401 1678
1402 coro->flags |= CF_DESTROYED; 1679 coro->flags |= CF_DESTROYED;
1403 1680
1404 if (coro->flags & CF_READY) 1681 if (coro->flags & CF_READY)
… …
1408 --coro_nready; 1685 --coro_nready;
1409 } 1686 }
1410 else 1687 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1688 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1689
1413 if (coro->mainstack && coro->mainstack != main_mainstack) 1690 if (coro->mainstack
1414 { 1691 && coro->mainstack != main_mainstack
1415 struct coro temp; 1692 && coro->slot
1416 1693 && !PL_dirty)
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418
1419 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro); 1694 destroy_perl (aTHX_ coro);
1421
1422 coro_destruct (aTHX_ coro);
1423
1424 load_perl (aTHX_ &temp);
1425
1426 coro->slot = 0;
1427 }
1428
1429 cctx_destroy (coro->cctx);
1430 SvREFCNT_dec (coro->args);
1431 1695
1432 if (coro->next) coro->next->prev = coro->prev; 1696 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1697 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1698 if (coro == coro_first) coro_first = coro->next;
1699
1700 cctx_destroy (coro->cctx);
1701 SvREFCNT_dec (coro->startcv);
1702 SvREFCNT_dec (coro->args);
1703 SvREFCNT_dec (coro->swap_sv);
1704 SvREFCNT_dec (CORO_THROW);
1435 1705
1436 return 1; 1706 return 1;
1437} 1707}
1438 1708
1439static int 1709static int
… …
1494/** Coro ********************************************************************/ 1764/** Coro ********************************************************************/
1495 1765
1496INLINE void 1766INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1767coro_enq (pTHX_ struct coro *coro)
1498{ 1768{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1769 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1770
1502INLINE SV * 1771 SvREFCNT_inc_NN (coro->hv);
1772
1773 coro->next_ready = 0;
1774 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1775 ready [1] = coro;
1776}
1777
1778INLINE struct coro *
1503coro_deq (pTHX) 1779coro_deq (pTHX)
1504{ 1780{
1505 int prio; 1781 int prio;
1506 1782
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1783 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1784 {
1509 return av_shift (coro_ready [prio]); 1785 struct coro **ready = coro_ready [prio];
1786
1787 if (ready [0])
1788 {
1789 struct coro *coro = ready [0];
1790 ready [0] = coro->next_ready;
1791 return coro;
1792 }
1793 }
1510 1794
1511 return 0; 1795 return 0;
1796}
1797
1798static void
1799invoke_sv_ready_hook_helper (void)
1800{
1801 dTHX;
1802 dSP;
1803
1804 ENTER;
1805 SAVETMPS;
1806
1807 PUSHMARK (SP);
1808 PUTBACK;
1809 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1810
1811 FREETMPS;
1812 LEAVE;
1512} 1813}
1513 1814
1514static int 1815static int
1515api_ready (pTHX_ SV *coro_sv) 1816api_ready (pTHX_ SV *coro_sv)
1516{ 1817{
1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1520
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1818 struct coro *coro = SvSTATE (coro_sv);
1525 1819
1526 if (coro->flags & CF_READY) 1820 if (coro->flags & CF_READY)
1527 return 0; 1821 return 0;
1528 1822
1529 coro->flags |= CF_READY; 1823 coro->flags |= CF_READY;
1530 1824
1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro); 1825 coro_enq (aTHX_ coro);
1535 ++coro_nready;
1536 1826
1537 if (sv_hook) 1827 if (!coro_nready++)
1538 { 1828 if (coroapi.readyhook)
1539 dSP; 1829 coroapi.readyhook ();
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1555 1830
1556 return 1; 1831 return 1;
1557} 1832}
1558 1833
1559static int 1834static int
1560api_is_ready (pTHX_ SV *coro_sv) 1835api_is_ready (pTHX_ SV *coro_sv)
1561{ 1836{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1837 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1838}
1564 1839
1840/* expects to own a reference to next->hv */
1565INLINE void 1841INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1842prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1843{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1844 SV *prev_sv = SvRV (coro_current);
1845
1608 ta->prev = SvSTATE_hv (prev_sv); 1846 ta->prev = SvSTATE_hv (prev_sv);
1847 ta->next = next;
1848
1609 TRANSFER_CHECK (*ta); 1849 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1850
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1851 SvRV_set (coro_current, (SV *)next->hv);
1613 1852
1614 free_coro_mortal (aTHX); 1853 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1854 coro_mortal = prev_sv;
1616} 1855}
1617 1856
1857static void
1858prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1859{
1860 for (;;)
1861 {
1862 struct coro *next = coro_deq (aTHX);
1863
1864 if (expect_true (next))
1865 {
1866 /* cannot transfer to destroyed coros, skip and look for next */
1867 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1868 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1869 else
1870 {
1871 next->flags &= ~CF_READY;
1872 --coro_nready;
1873
1874 prepare_schedule_to (aTHX_ ta, next);
1875 break;
1876 }
1877 }
1878 else
1879 {
1880 /* nothing to schedule: call the idle handler */
1881 if (SvROK (sv_idle)
1882 && SvOBJECT (SvRV (sv_idle)))
1883 {
1884 if (SvRV (sv_idle) == SvRV (coro_current))
1885 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1886
1887 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1888 api_ready (aTHX_ SvRV (sv_idle));
1889 --coro_nready;
1890 }
1891 else
1892 {
1893 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1894 dSP;
1895
1896 ENTER;
1897 SAVETMPS;
1898
1899 PUSHMARK (SP);
1900 PUTBACK;
1901 call_sv (sv_idle, G_VOID | G_DISCARD);
1902
1903 FREETMPS;
1904 LEAVE;
1905 }
1906 }
1907 }
1908}
1909
1618INLINE void 1910INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1911prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1912{
1621 api_ready (aTHX_ coro_current); 1913 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1914 prepare_schedule (aTHX_ ta);
… …
1641{ 1933{
1642 struct coro_transfer_args ta; 1934 struct coro_transfer_args ta;
1643 1935
1644 prepare_schedule (aTHX_ &ta); 1936 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 1937 TRANSFER (ta, 1);
1938}
1939
1940static void
1941api_schedule_to (pTHX_ SV *coro_sv)
1942{
1943 struct coro_transfer_args ta;
1944 struct coro *next = SvSTATE (coro_sv);
1945
1946 SvREFCNT_inc_NN (coro_sv);
1947 prepare_schedule_to (aTHX_ &ta, next);
1646} 1948}
1647 1949
1648static int 1950static int
1649api_cede (pTHX) 1951api_cede (pTHX)
1650{ 1952{
… …
1679static void 1981static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 1982api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 1983{
1682 struct coro *coro = SvSTATE (coro_sv); 1984 struct coro *coro = SvSTATE (coro_sv);
1683 1985
1986 if (coro->flags & CF_RUNNING)
1987 croak ("cannot enable tracing on a running coroutine, caught");
1988
1684 if (flags & CC_TRACE) 1989 if (flags & CC_TRACE)
1685 { 1990 {
1686 if (!coro->cctx) 1991 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 1992 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 1993 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 1994 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 1995
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1996 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 1997 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1998 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 1999 {
… …
1697 if (coro->flags & CF_RUNNING) 2002 if (coro->flags & CF_RUNNING)
1698 PL_runops = RUNOPS_DEFAULT; 2003 PL_runops = RUNOPS_DEFAULT;
1699 else 2004 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 2005 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 2006 }
2007}
2008
2009static void
2010coro_call_on_destroy (pTHX_ struct coro *coro)
2011{
2012 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2013
2014 if (on_destroyp)
2015 {
2016 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2017 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2018 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2019
2020 while (AvFILLp (on_destroy) >= 0)
2021 {
2022 dSP; /* don't disturb outer sp */
2023 SV *cb = av_pop (on_destroy);
2024
2025 PUSHMARK (SP);
2026
2027 if (statusp)
2028 {
2029 int i;
2030 EXTEND (SP, AvFILLp (status) + 1);
2031
2032 for (i = 0; i <= AvFILLp (status); ++i)
2033 PUSHs (AvARRAY (status)[i]);
2034 }
2035
2036 PUTBACK;
2037 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2038 }
2039 }
2040}
2041
2042static void
2043coro_set_status (HV *coro_hv, SV **arg, int items)
2044{
2045 AV *av = newAV ();
2046
2047 /* items are actually not so common, so optimise for this case */
2048 if (items)
2049 {
2050 int i;
2051
2052 av_extend (av, items - 1);
2053
2054 for (i = 0; i < items; ++i)
2055 av_push (av, SvREFCNT_inc_NN (arg [i]));
2056 }
2057
2058 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2059}
2060
2061static void
2062slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2063{
2064 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2065 api_ready (aTHX_ sv_manager);
2066
2067 frame->prepare = prepare_schedule;
2068 frame->check = slf_check_repeat;
2069
2070 /* as a minor optimisation, we could unwind all stacks here */
2071 /* but that puts extra pressure on pp_slf, and is not worth much */
2072 /*coro_unwind_stacks (aTHX);*/
2073}
2074
2075static void
2076slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 HV *coro_hv = (HV *)SvRV (coro_current);
2079
2080 coro_set_status (coro_hv, arg, items);
2081 slf_init_terminate_cancel_common (frame, coro_hv);
2082}
2083
2084static void
2085slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2086{
2087 HV *coro_hv;
2088 struct coro *coro;
2089
2090 if (items <= 0)
2091 croak ("Coro::cancel called without coro object,");
2092
2093 coro = SvSTATE (arg [0]);
2094 coro_hv = coro->hv;
2095
2096 coro_set_status (coro_hv, arg + 1, items - 1);
2097
2098 /* cancelling the current coro is allowed, and equals terminate */
2099 if (coro_hv == (HV *)SvRV (coro_current))
2100 slf_init_terminate_cancel_common (frame, coro_hv);
2101 else
2102 {
2103 /* otherwise we cancel ourselves */
2104 coro_state_destroy (aTHX_ coro);
2105 coro_call_on_destroy (aTHX_ coro);
2106
2107 frame->prepare = prepare_nop;
2108 frame->check = slf_check_nop;
2109 }
2110}
2111
2112/*****************************************************************************/
2113/* async pool handler */
2114
2115static int
2116slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2117{
2118 HV *hv = (HV *)SvRV (coro_current);
2119 struct coro *coro = (struct coro *)frame->data;
2120
2121 if (!coro->invoke_cb)
2122 return 1; /* loop till we have invoke */
2123 else
2124 {
2125 hv_store (hv, "desc", sizeof ("desc") - 1,
2126 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2127
2128 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2129
2130 {
2131 dSP;
2132 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2133 PUTBACK;
2134 }
2135
2136 SvREFCNT_dec (GvAV (PL_defgv));
2137 GvAV (PL_defgv) = coro->invoke_av;
2138 coro->invoke_av = 0;
2139
2140 return 0;
2141 }
2142}
2143
2144static void
2145slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2146{
2147 HV *hv = (HV *)SvRV (coro_current);
2148 struct coro *coro = SvSTATE_hv ((SV *)hv);
2149
2150 if (expect_true (coro->saved_deffh))
2151 {
2152 /* subsequent iteration */
2153 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2154 coro->saved_deffh = 0;
2155
2156 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2157 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2158 {
2159 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2160 coro->invoke_av = newAV ();
2161
2162 frame->prepare = prepare_nop;
2163 }
2164 else
2165 {
2166 av_clear (GvAV (PL_defgv));
2167 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2168
2169 coro->prio = 0;
2170
2171 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2172 api_trace (aTHX_ coro_current, 0);
2173
2174 frame->prepare = prepare_schedule;
2175 av_push (av_async_pool, SvREFCNT_inc (hv));
2176 }
2177 }
2178 else
2179 {
2180 /* first iteration, simply fall through */
2181 frame->prepare = prepare_nop;
2182 }
2183
2184 frame->check = slf_check_pool_handler;
2185 frame->data = (void *)coro;
2186}
2187
2188/*****************************************************************************/
2189/* rouse callback */
2190
2191#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2192
2193static void
2194coro_rouse_callback (pTHX_ CV *cv)
2195{
2196 dXSARGS;
2197 SV *data = (SV *)S_GENSUB_ARG;
2198
2199 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2200 {
2201 /* first call, set args */
2202 SV *coro = SvRV (data);
2203 AV *av = newAV ();
2204
2205 SvRV_set (data, (SV *)av);
2206
2207 /* better take a full copy of the arguments */
2208 while (items--)
2209 av_store (av, items, newSVsv (ST (items)));
2210
2211 api_ready (aTHX_ coro);
2212 SvREFCNT_dec (coro);
2213 }
2214
2215 XSRETURN_EMPTY;
2216}
2217
2218static int
2219slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2220{
2221 SV *data = (SV *)frame->data;
2222
2223 if (CORO_THROW)
2224 return 0;
2225
2226 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2227 return 1;
2228
2229 /* now push all results on the stack */
2230 {
2231 dSP;
2232 AV *av = (AV *)SvRV (data);
2233 int i;
2234
2235 EXTEND (SP, AvFILLp (av) + 1);
2236 for (i = 0; i <= AvFILLp (av); ++i)
2237 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2238
2239 /* we have stolen the elements, so set length to zero and free */
2240 AvFILLp (av) = -1;
2241 av_undef (av);
2242
2243 PUTBACK;
2244 }
2245
2246 return 0;
2247}
2248
2249static void
2250slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2251{
2252 SV *cb;
2253
2254 if (items)
2255 cb = arg [0];
2256 else
2257 {
2258 struct coro *coro = SvSTATE_current;
2259
2260 if (!coro->rouse_cb)
2261 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2262
2263 cb = sv_2mortal (coro->rouse_cb);
2264 coro->rouse_cb = 0;
2265 }
2266
2267 if (!SvROK (cb)
2268 || SvTYPE (SvRV (cb)) != SVt_PVCV
2269 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2270 croak ("Coro::rouse_wait called with illegal callback argument,");
2271
2272 {
2273 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2274 SV *data = (SV *)S_GENSUB_ARG;
2275
2276 frame->data = (void *)data;
2277 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2278 frame->check = slf_check_rouse_wait;
2279 }
2280}
2281
2282static SV *
2283coro_new_rouse_cb (pTHX)
2284{
2285 HV *hv = (HV *)SvRV (coro_current);
2286 struct coro *coro = SvSTATE_hv (hv);
2287 SV *data = newRV_inc ((SV *)hv);
2288 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2289
2290 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2291 SvREFCNT_dec (data); /* magicext increases the refcount */
2292
2293 SvREFCNT_dec (coro->rouse_cb);
2294 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2295
2296 return cb;
2297}
2298
2299/*****************************************************************************/
2300/* schedule-like-function opcode (SLF) */
2301
2302static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2303static const CV *slf_cv;
2304static SV **slf_argv;
2305static int slf_argc, slf_arga; /* count, allocated */
2306static I32 slf_ax; /* top of stack, for restore */
2307
2308/* this restores the stack in the case we patched the entersub, to */
2309/* recreate the stack frame as perl will on following calls */
2310/* since entersub cleared the stack */
2311static OP *
2312pp_restore (pTHX)
2313{
2314 int i;
2315 SV **SP = PL_stack_base + slf_ax;
2316
2317 PUSHMARK (SP);
2318
2319 EXTEND (SP, slf_argc + 1);
2320
2321 for (i = 0; i < slf_argc; ++i)
2322 PUSHs (sv_2mortal (slf_argv [i]));
2323
2324 PUSHs ((SV *)CvGV (slf_cv));
2325
2326 RETURNOP (slf_restore.op_first);
2327}
2328
2329static void
2330slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2331{
2332 SV **arg = (SV **)slf_frame.data;
2333
2334 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2335}
2336
2337static void
2338slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2339{
2340 if (items != 2)
2341 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2342
2343 frame->prepare = slf_prepare_transfer;
2344 frame->check = slf_check_nop;
2345 frame->data = (void *)arg; /* let's hope it will stay valid */
2346}
2347
2348static void
2349slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2350{
2351 frame->prepare = prepare_schedule;
2352 frame->check = slf_check_nop;
2353}
2354
2355static void
2356slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2357{
2358 struct coro *next = (struct coro *)slf_frame.data;
2359
2360 SvREFCNT_inc_NN (next->hv);
2361 prepare_schedule_to (aTHX_ ta, next);
2362}
2363
2364static void
2365slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2366{
2367 if (!items)
2368 croak ("Coro::schedule_to expects a coroutine argument, caught");
2369
2370 frame->data = (void *)SvSTATE (arg [0]);
2371 frame->prepare = slf_prepare_schedule_to;
2372 frame->check = slf_check_nop;
2373}
2374
2375static void
2376slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2377{
2378 api_ready (aTHX_ SvRV (coro_current));
2379
2380 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2381}
2382
2383static void
2384slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2385{
2386 frame->prepare = prepare_cede;
2387 frame->check = slf_check_nop;
2388}
2389
2390static void
2391slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2392{
2393 frame->prepare = prepare_cede_notself;
2394 frame->check = slf_check_nop;
2395}
2396
2397/*
2398 * these not obviously related functions are all rolled into one
2399 * function to increase chances that they all will call transfer with the same
2400 * stack offset
2401 * SLF stands for "schedule-like-function".
2402 */
2403static OP *
2404pp_slf (pTHX)
2405{
2406 I32 checkmark; /* mark SP to see how many elements check has pushed */
2407
2408 /* set up the slf frame, unless it has already been set-up */
2409 /* the latter happens when a new coro has been started */
2410 /* or when a new cctx was attached to an existing coroutine */
2411 if (expect_true (!slf_frame.prepare))
2412 {
2413 /* first iteration */
2414 dSP;
2415 SV **arg = PL_stack_base + TOPMARK + 1;
2416 int items = SP - arg; /* args without function object */
2417 SV *gv = *sp;
2418
2419 /* do a quick consistency check on the "function" object, and if it isn't */
2420 /* for us, divert to the real entersub */
2421 if (SvTYPE (gv) != SVt_PVGV
2422 || !GvCV (gv)
2423 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2424 return PL_ppaddr[OP_ENTERSUB](aTHX);
2425
2426 if (!(PL_op->op_flags & OPf_STACKED))
2427 {
2428 /* ampersand-form of call, use @_ instead of stack */
2429 AV *av = GvAV (PL_defgv);
2430 arg = AvARRAY (av);
2431 items = AvFILLp (av) + 1;
2432 }
2433
2434 /* now call the init function, which needs to set up slf_frame */
2435 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2436 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2437
2438 /* pop args */
2439 SP = PL_stack_base + POPMARK;
2440
2441 PUTBACK;
2442 }
2443
2444 /* now that we have a slf_frame, interpret it! */
2445 /* we use a callback system not to make the code needlessly */
2446 /* complicated, but so we can run multiple perl coros from one cctx */
2447
2448 do
2449 {
2450 struct coro_transfer_args ta;
2451
2452 slf_frame.prepare (aTHX_ &ta);
2453 TRANSFER (ta, 0);
2454
2455 checkmark = PL_stack_sp - PL_stack_base;
2456 }
2457 while (slf_frame.check (aTHX_ &slf_frame));
2458
2459 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2460
2461 /* exception handling */
2462 if (expect_false (CORO_THROW))
2463 {
2464 SV *exception = sv_2mortal (CORO_THROW);
2465
2466 CORO_THROW = 0;
2467 sv_setsv (ERRSV, exception);
2468 croak (0);
2469 }
2470
2471 /* return value handling - mostly like entersub */
2472 /* make sure we put something on the stack in scalar context */
2473 if (GIMME_V == G_SCALAR)
2474 {
2475 dSP;
2476 SV **bot = PL_stack_base + checkmark;
2477
2478 if (sp == bot) /* too few, push undef */
2479 bot [1] = &PL_sv_undef;
2480 else if (sp != bot + 1) /* too many, take last one */
2481 bot [1] = *sp;
2482
2483 SP = bot + 1;
2484
2485 PUTBACK;
2486 }
2487
2488 return NORMAL;
2489}
2490
2491static void
2492api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2493{
2494 int i;
2495 SV **arg = PL_stack_base + ax;
2496 int items = PL_stack_sp - arg + 1;
2497
2498 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2499
2500 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2501 && PL_op->op_ppaddr != pp_slf)
2502 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2503
2504 CvFLAGS (cv) |= CVf_SLF;
2505 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2506 slf_cv = cv;
2507
2508 /* we patch the op, and then re-run the whole call */
2509 /* we have to put the same argument on the stack for this to work */
2510 /* and this will be done by pp_restore */
2511 slf_restore.op_next = (OP *)&slf_restore;
2512 slf_restore.op_type = OP_CUSTOM;
2513 slf_restore.op_ppaddr = pp_restore;
2514 slf_restore.op_first = PL_op;
2515
2516 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2517
2518 if (PL_op->op_flags & OPf_STACKED)
2519 {
2520 if (items > slf_arga)
2521 {
2522 slf_arga = items;
2523 Safefree (slf_argv);
2524 New (0, slf_argv, slf_arga, SV *);
2525 }
2526
2527 slf_argc = items;
2528
2529 for (i = 0; i < items; ++i)
2530 slf_argv [i] = SvREFCNT_inc (arg [i]);
2531 }
2532 else
2533 slf_argc = 0;
2534
2535 PL_op->op_ppaddr = pp_slf;
2536 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2537
2538 PL_op = (OP *)&slf_restore;
2539}
2540
2541/*****************************************************************************/
2542/* dynamic wind */
2543
2544static void
2545on_enterleave_call (pTHX_ SV *cb)
2546{
2547 dSP;
2548
2549 PUSHSTACK;
2550
2551 PUSHMARK (SP);
2552 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD);
2554 SPAGAIN;
2555
2556 POPSTACK;
2557}
2558
2559static SV *
2560coro_avp_pop_and_free (pTHX_ AV **avp)
2561{
2562 AV *av = *avp;
2563 SV *res = av_pop (av);
2564
2565 if (AvFILLp (av) < 0)
2566 {
2567 *avp = 0;
2568 SvREFCNT_dec (av);
2569 }
2570
2571 return res;
2572}
2573
2574static void
2575coro_pop_on_enter (pTHX_ void *coro)
2576{
2577 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2578 SvREFCNT_dec (cb);
2579}
2580
2581static void
2582coro_pop_on_leave (pTHX_ void *coro)
2583{
2584 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2585 on_enterleave_call (aTHX_ sv_2mortal (cb));
1702} 2586}
1703 2587
1704/*****************************************************************************/ 2588/*****************************************************************************/
1705/* PerlIO::cede */ 2589/* PerlIO::cede */
1706 2590
… …
1775 PerlIOBuf_get_cnt, 2659 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2660 PerlIOBuf_set_ptrcnt,
1777}; 2661};
1778 2662
1779/*****************************************************************************/ 2663/*****************************************************************************/
2664/* Coro::Semaphore & Coro::Signal */
1780 2665
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2666static SV *
1791pp_restore (pTHX) 2667coro_waitarray_new (pTHX_ int count)
1792{ 2668{
1793 int i; 2669 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2670 AV *av = newAV ();
2671 SV **ary;
1795 2672
1796 PUSHMARK (SP); 2673 /* unfortunately, building manually saves memory */
2674 Newx (ary, 2, SV *);
2675 AvALLOC (av) = ary;
2676#if PERL_VERSION_ATLEAST (5,10,0)
2677 AvARRAY (av) = ary;
2678#else
2679 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2680 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2681 SvPVX ((SV *)av) = (char *)ary;
2682#endif
2683 AvMAX (av) = 1;
2684 AvFILLp (av) = 0;
2685 ary [0] = newSViv (count);
1797 2686
1798 EXTEND (SP, slf_argc + 1); 2687 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2688}
1807 2689
1808static void 2690/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006 2691
2007static void 2692static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2693coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{ 2694{
2010 SV *count_sv = AvARRAY (av)[0]; 2695 SV *count_sv = AvARRAY (av)[0];
… …
2022 AvARRAY (av)[0] = AvARRAY (av)[1]; 2707 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv; 2708 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av); 2709 cb = av_shift (av);
2025 2710
2026 if (SvOBJECT (cb)) 2711 if (SvOBJECT (cb))
2712 {
2027 api_ready (aTHX_ cb); 2713 api_ready (aTHX_ cb);
2028 else 2714 --count;
2029 croak ("callbacks not yet supported"); 2715 }
2716 else if (SvTYPE (cb) == SVt_PVCV)
2717 {
2718 dSP;
2719 PUSHMARK (SP);
2720 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2721 PUTBACK;
2722 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2723 }
2030 2724
2031 SvREFCNT_dec (cb); 2725 SvREFCNT_dec (cb);
2032
2033 --count;
2034 } 2726 }
2035} 2727}
2036 2728
2037static void 2729static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2730coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2732 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2733 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042} 2734}
2043 2735
2044static int 2736static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2737slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2046{ 2738{
2047 AV *av = (AV *)frame->data; 2739 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0]; 2740 SV *count_sv = AvARRAY (av)[0];
2049 2741
2742 /* if we are about to throw, don't actually acquire the lock, just throw */
2743 if (CORO_THROW)
2744 return 0;
2050 if (SvIVX (count_sv) > 0) 2745 else if (SvIVX (count_sv) > 0)
2051 { 2746 {
2052 SvSTATE_current->on_destroy = 0; 2747 SvSTATE_current->on_destroy = 0;
2748
2749 if (acquire)
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2750 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2751 else
2752 coro_semaphore_adjust (aTHX_ av, 0);
2753
2054 return 0; 2754 return 0;
2055 } 2755 }
2056 else 2756 else
2057 { 2757 {
2058 int i; 2758 int i;
… …
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2767 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1; 2768 return 1;
2069 } 2769 }
2070} 2770}
2071 2771
2072static void 2772static int
2773slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2774{
2775 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2776}
2777
2778static int
2779slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2780{
2781 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2782}
2783
2784static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2785slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{ 2786{
2075 AV *av = (AV *)SvRV (arg [0]); 2787 AV *av = (AV *)SvRV (arg [0]);
2076 2788
2077 if (SvIVX (AvARRAY (av)[0]) > 0) 2789 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 { 2790 {
2079 frame->data = (void *)av; 2791 frame->data = (void *)av;
2080 frame->prepare = prepare_nop; 2792 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 } 2793 }
2083 else 2794 else
2084 { 2795 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2796 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086 2797
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2798 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule; 2799 frame->prepare = prepare_schedule;
2089 2800
2090 /* to avoid race conditions when a woken-up coro gets terminated */ 2801 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2802 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2803 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 } 2804 }
2805}
2095 2806
2807static void
2808slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2809{
2810 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2096 frame->check = slf_check_semaphore_down; 2811 frame->check = slf_check_semaphore_down;
2812}
2097 2813
2814static void
2815slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2816{
2817 if (items >= 2)
2818 {
2819 /* callback form */
2820 AV *av = (AV *)SvRV (arg [0]);
2821 SV *cb_cv = s_get_cv_croak (arg [1]);
2822
2823 av_push (av, SvREFCNT_inc_NN (cb_cv));
2824
2825 if (SvIVX (AvARRAY (av)[0]) > 0)
2826 coro_semaphore_adjust (aTHX_ av, 0);
2827
2828 frame->prepare = prepare_nop;
2829 frame->check = slf_check_nop;
2830 }
2831 else
2832 {
2833 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2834 frame->check = slf_check_semaphore_wait;
2835 }
2836}
2837
2838/* signal */
2839
2840static void
2841coro_signal_wake (pTHX_ AV *av, int count)
2842{
2843 SvIVX (AvARRAY (av)[0]) = 0;
2844
2845 /* now signal count waiters */
2846 while (count > 0 && AvFILLp (av) > 0)
2847 {
2848 SV *cb;
2849
2850 /* swap first two elements so we can shift a waiter */
2851 cb = AvARRAY (av)[0];
2852 AvARRAY (av)[0] = AvARRAY (av)[1];
2853 AvARRAY (av)[1] = cb;
2854
2855 cb = av_shift (av);
2856
2857 if (SvTYPE (cb) == SVt_PVCV)
2858 {
2859 dSP;
2860 PUSHMARK (SP);
2861 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2862 PUTBACK;
2863 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2864 }
2865 else
2866 {
2867 api_ready (aTHX_ cb);
2868 sv_setiv (cb, 0); /* signal waiter */
2869 }
2870
2871 SvREFCNT_dec (cb);
2872
2873 --count;
2874 }
2875}
2876
2877static int
2878slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2879{
2880 /* if we are about to throw, also stop waiting */
2881 return SvROK ((SV *)frame->data) && !CORO_THROW;
2882}
2883
2884static void
2885slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2886{
2887 AV *av = (AV *)SvRV (arg [0]);
2888
2889 if (items >= 2)
2890 {
2891 SV *cb_cv = s_get_cv_croak (arg [1]);
2892 av_push (av, SvREFCNT_inc_NN (cb_cv));
2893
2894 if (SvIVX (AvARRAY (av)[0]))
2895 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2896
2897 frame->prepare = prepare_nop;
2898 frame->check = slf_check_nop;
2899 }
2900 else if (SvIVX (AvARRAY (av)[0]))
2901 {
2902 SvIVX (AvARRAY (av)[0]) = 0;
2903 frame->prepare = prepare_nop;
2904 frame->check = slf_check_nop;
2905 }
2906 else
2907 {
2908 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2909
2910 av_push (av, waiter);
2911
2912 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2913 frame->prepare = prepare_schedule;
2914 frame->check = slf_check_signal_wait;
2915 }
2098} 2916}
2099 2917
2100/*****************************************************************************/ 2918/*****************************************************************************/
2919/* Coro::AIO */
2101 2920
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2921#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2103 2922
2104/* create a closure from XS, returns a code reference */ 2923/* helper storage struct */
2105/* the arg can be accessed via GENSUB_ARG from the callback */ 2924struct io_state
2106/* the callback must use dXSARGS/XSRETURN */ 2925{
2926 int errorno;
2927 I32 laststype; /* U16 in 5.10.0 */
2928 int laststatval;
2929 Stat_t statcache;
2930};
2931
2932static void
2933coro_aio_callback (pTHX_ CV *cv)
2934{
2935 dXSARGS;
2936 AV *state = (AV *)S_GENSUB_ARG;
2937 SV *coro = av_pop (state);
2938 SV *data_sv = newSV (sizeof (struct io_state));
2939
2940 av_extend (state, items - 1);
2941
2942 sv_upgrade (data_sv, SVt_PV);
2943 SvCUR_set (data_sv, sizeof (struct io_state));
2944 SvPOK_only (data_sv);
2945
2946 {
2947 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2948
2949 data->errorno = errno;
2950 data->laststype = PL_laststype;
2951 data->laststatval = PL_laststatval;
2952 data->statcache = PL_statcache;
2953 }
2954
2955 /* now build the result vector out of all the parameters and the data_sv */
2956 {
2957 int i;
2958
2959 for (i = 0; i < items; ++i)
2960 av_push (state, SvREFCNT_inc_NN (ST (i)));
2961 }
2962
2963 av_push (state, data_sv);
2964
2965 api_ready (aTHX_ coro);
2966 SvREFCNT_dec (coro);
2967 SvREFCNT_dec ((AV *)state);
2968}
2969
2970static int
2971slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2972{
2973 AV *state = (AV *)frame->data;
2974
2975 /* if we are about to throw, return early */
2976 /* this does not cancel the aio request, but at least */
2977 /* it quickly returns */
2978 if (CORO_THROW)
2979 return 0;
2980
2981 /* one element that is an RV? repeat! */
2982 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2983 return 1;
2984
2985 /* restore status */
2986 {
2987 SV *data_sv = av_pop (state);
2988 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2989
2990 errno = data->errorno;
2991 PL_laststype = data->laststype;
2992 PL_laststatval = data->laststatval;
2993 PL_statcache = data->statcache;
2994
2995 SvREFCNT_dec (data_sv);
2996 }
2997
2998 /* push result values */
2999 {
3000 dSP;
3001 int i;
3002
3003 EXTEND (SP, AvFILLp (state) + 1);
3004 for (i = 0; i <= AvFILLp (state); ++i)
3005 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3006
3007 PUTBACK;
3008 }
3009
3010 return 0;
3011}
3012
3013static void
3014slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3015{
3016 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3017 SV *coro_hv = SvRV (coro_current);
3018 struct coro *coro = SvSTATE_hv (coro_hv);
3019
3020 /* put our coroutine id on the state arg */
3021 av_push (state, SvREFCNT_inc_NN (coro_hv));
3022
3023 /* first see whether we have a non-zero priority and set it as AIO prio */
3024 if (coro->prio)
3025 {
3026 dSP;
3027
3028 static SV *prio_cv;
3029 static SV *prio_sv;
3030
3031 if (expect_false (!prio_cv))
3032 {
3033 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3034 prio_sv = newSViv (0);
3035 }
3036
3037 PUSHMARK (SP);
3038 sv_setiv (prio_sv, coro->prio);
3039 XPUSHs (prio_sv);
3040
3041 PUTBACK;
3042 call_sv (prio_cv, G_VOID | G_DISCARD);
3043 }
3044
3045 /* now call the original request */
3046 {
3047 dSP;
3048 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3049 int i;
3050
3051 PUSHMARK (SP);
3052
3053 /* first push all args to the stack */
3054 EXTEND (SP, items + 1);
3055
3056 for (i = 0; i < items; ++i)
3057 PUSHs (arg [i]);
3058
3059 /* now push the callback closure */
3060 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3061
3062 /* now call the AIO function - we assume our request is uncancelable */
3063 PUTBACK;
3064 call_sv ((SV *)req, G_VOID | G_DISCARD);
3065 }
3066
3067 /* now that the request is going, we loop till we have a result */
3068 frame->data = (void *)state;
3069 frame->prepare = prepare_schedule;
3070 frame->check = slf_check_aio_req;
3071}
3072
3073static void
3074coro_aio_req_xs (pTHX_ CV *cv)
3075{
3076 dXSARGS;
3077
3078 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3079
3080 XSRETURN_EMPTY;
3081}
3082
3083/*****************************************************************************/
3084
3085#if CORO_CLONE
3086# include "clone.c"
3087#endif
3088
3089/*****************************************************************************/
3090
2107static SV * 3091static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3092coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2109{ 3093{
2110 CV *cv = (CV *)NEWSV (0, 0); 3094 SV *coro_sv;
3095 struct coro *coro;
3096 MAGIC *mg;
3097 HV *hv;
3098 SV *cb;
3099 int i;
2111 3100
2112 sv_upgrade ((SV *)cv, SVt_PVCV); 3101 if (argc > 0)
3102 {
3103 cb = s_get_cv_croak (argv [0]);
2113 3104
2114 CvANON_on (cv); 3105 if (!is_coro)
2115 CvISXSUB_on (cv); 3106 {
2116 CvXSUB (cv) = xsub; 3107 if (CvISXSUB (cb))
2117 GENSUB_ARG = arg; 3108 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2118 3109
2119 return newRV_noinc ((SV *)cv); 3110 if (!CvROOT (cb))
2120} 3111 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3112 }
3113 }
2121 3114
2122/*****************************************************************************/ 3115 Newz (0, coro, 1, struct coro);
3116 coro->args = newAV ();
3117 coro->flags = CF_NEW;
3118
3119 if (coro_first) coro_first->prev = coro;
3120 coro->next = coro_first;
3121 coro_first = coro;
3122
3123 coro->hv = hv = newHV ();
3124 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3125 mg->mg_flags |= MGf_DUP;
3126 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3127
3128 if (argc > 0)
3129 {
3130 av_extend (coro->args, argc + is_coro - 1);
3131
3132 if (is_coro)
3133 {
3134 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3135 cb = (SV *)cv_coro_run;
3136 }
3137
3138 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3139
3140 for (i = 1; i < argc; i++)
3141 av_push (coro->args, newSVsv (argv [i]));
3142 }
3143
3144 return coro_sv;
3145}
2123 3146
2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3147MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2125 3148
2126PROTOTYPES: DISABLE 3149PROTOTYPES: DISABLE
2127 3150
… …
2132 coro_thx = PERL_GET_CONTEXT; 3155 coro_thx = PERL_GET_CONTEXT;
2133# endif 3156# endif
2134#endif 3157#endif
2135 BOOT_PAGESIZE; 3158 BOOT_PAGESIZE;
2136 3159
3160 cctx_current = cctx_new_empty ();
3161
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3162 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3163 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139 3164
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3165 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3166 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2160 3185
2161 { 3186 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3187 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163 3188
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3189 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf, 3190 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2166 newSVpv ("coro_slf", 0), 0);
2167 3191
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3192 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf, 3193 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2170 newSVpv ("coro schedule like function", 0), 0);
2171 } 3194 }
2172 3195
2173 coroapi.ver = CORO_API_VERSION; 3196 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION; 3197 coroapi.rev = CORO_API_REVISION;
2175 3198
… …
2180 coroapi.prepare_nop = prepare_nop; 3203 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule; 3204 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede; 3205 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself; 3206 coroapi.prepare_cede_notself = prepare_cede_notself;
2184 3207
2185 { 3208 time_init (aTHX);
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187 3209
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
2193
2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3210 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2195} 3211}
2196 3212
2197SV * 3213SV *
2198new (char *klass, ...) 3214new (SV *klass, ...)
3215 ALIAS:
3216 Coro::new = 1
2199 CODE: 3217 CODE:
2200{ 3218 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2201 struct coro *coro; 3219 OUTPUT:
2202 MAGIC *mg;
2203 HV *hv;
2204 int i;
2205
2206 Newz (0, coro, 1, struct coro);
2207 coro->args = newAV ();
2208 coro->flags = CF_NEW;
2209
2210 if (coro_first) coro_first->prev = coro;
2211 coro->next = coro_first;
2212 coro_first = coro;
2213
2214 coro->hv = hv = newHV ();
2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP;
2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2218
2219 av_extend (coro->args, items - 1);
2220 for (i = 1; i < items; i++)
2221 av_push (coro->args, newSVsv (ST (i)));
2222}
2223 OUTPUT:
2224 RETVAL 3220 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230 3221
2231void 3222void
2232transfer (...) 3223transfer (...)
2233 PROTOTYPE: $$ 3224 PROTOTYPE: $$
2234 CODE: 3225 CODE:
2235 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3226 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2236 3227
2237bool
2238_destroy (SV *coro_sv)
2239 CODE:
2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2241 OUTPUT:
2242 RETVAL
2243
2244void 3228void
2245_exit (int code) 3229_exit (int code)
2246 PROTOTYPE: $ 3230 PROTOTYPE: $
2247 CODE: 3231 CODE:
2248 _exit (code); 3232 _exit (code);
3233
3234SV *
3235clone (Coro::State coro)
3236 CODE:
3237{
3238#if CORO_CLONE
3239 struct coro *ncoro = coro_clone (aTHX_ coro);
3240 MAGIC *mg;
3241 /* TODO: too much duplication */
3242 ncoro->hv = newHV ();
3243 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3244 mg->mg_flags |= MGf_DUP;
3245 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3246#else
3247 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3248#endif
3249}
3250 OUTPUT:
3251 RETVAL
2249 3252
2250int 3253int
2251cctx_stacksize (int new_stacksize = 0) 3254cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$ 3255 PROTOTYPE: ;$
2253 CODE: 3256 CODE:
… …
2303 eval = 1 3306 eval = 1
2304 CODE: 3307 CODE:
2305{ 3308{
2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3309 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2307 { 3310 {
2308 struct coro temp; 3311 struct coro *current = SvSTATE_current;
2309 3312
2310 if (!(coro->flags & CF_RUNNING)) 3313 if (current != coro)
2311 { 3314 {
2312 PUTBACK; 3315 PUTBACK;
2313 save_perl (aTHX_ &temp); 3316 save_perl (aTHX_ current);
2314 load_perl (aTHX_ coro); 3317 load_perl (aTHX_ coro);
3318 SPAGAIN;
2315 } 3319 }
2316 3320
2317 {
2318 dSP;
2319 ENTER;
2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK; 3321 PUSHSTACK;
3322
2323 PUSHMARK (SP); 3323 PUSHMARK (SP);
3324 PUTBACK;
2324 3325
2325 if (ix) 3326 if (ix)
2326 eval_sv (coderef, 0); 3327 eval_sv (coderef, 0);
2327 else 3328 else
2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3329 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2329 3330
2330 POPSTACK; 3331 POPSTACK;
2331 SPAGAIN; 3332 SPAGAIN;
2332 FREETMPS;
2333 LEAVE;
2334 PUTBACK;
2335 }
2336 3333
2337 if (!(coro->flags & CF_RUNNING)) 3334 if (current != coro)
2338 { 3335 {
3336 PUTBACK;
2339 save_perl (aTHX_ coro); 3337 save_perl (aTHX_ coro);
2340 load_perl (aTHX_ &temp); 3338 load_perl (aTHX_ current);
2341 SPAGAIN; 3339 SPAGAIN;
2342 } 3340 }
2343 } 3341 }
2344} 3342}
2345 3343
… …
2349 ALIAS: 3347 ALIAS:
2350 is_ready = CF_READY 3348 is_ready = CF_READY
2351 is_running = CF_RUNNING 3349 is_running = CF_RUNNING
2352 is_new = CF_NEW 3350 is_new = CF_NEW
2353 is_destroyed = CF_DESTROYED 3351 is_destroyed = CF_DESTROYED
3352 is_suspended = CF_SUSPENDED
2354 CODE: 3353 CODE:
2355 RETVAL = boolSV (coro->flags & ix); 3354 RETVAL = boolSV (coro->flags & ix);
2356 OUTPUT: 3355 OUTPUT:
2357 RETVAL 3356 RETVAL
2358 3357
2359void 3358void
2360throw (Coro::State self, SV *throw = &PL_sv_undef) 3359throw (Coro::State self, SV *exception = &PL_sv_undef)
2361 PROTOTYPE: $;$ 3360 PROTOTYPE: $;$
2362 CODE: 3361 CODE:
2363{ 3362{
2364 struct coro *current = SvSTATE_current; 3363 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw; 3364 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2366 SvREFCNT_dec (*throwp); 3365 SvREFCNT_dec (*exceptionp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3366 SvGETMAGIC (exception);
3367 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2368} 3368}
2369 3369
2370void 3370void
2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$ 3372 PROTOTYPE: $;$
… …
2374 3374
2375SV * 3375SV *
2376has_cctx (Coro::State coro) 3376has_cctx (Coro::State coro)
2377 PROTOTYPE: $ 3377 PROTOTYPE: $
2378 CODE: 3378 CODE:
2379 RETVAL = boolSV (!!coro->cctx); 3379 /* maybe manage the running flag differently */
3380 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2380 OUTPUT: 3381 OUTPUT:
2381 RETVAL 3382 RETVAL
2382 3383
2383int 3384int
2384is_traced (Coro::State coro) 3385is_traced (Coro::State coro)
… …
2404 3405
2405void 3406void
2406force_cctx () 3407force_cctx ()
2407 PROTOTYPE: 3408 PROTOTYPE:
2408 CODE: 3409 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0; 3410 cctx_current->idle_sp = 0;
2410 3411
2411void 3412void
2412swap_defsv (Coro::State self) 3413swap_defsv (Coro::State self)
2413 PROTOTYPE: $ 3414 PROTOTYPE: $
2414 ALIAS: 3415 ALIAS:
… …
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3423 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423 3424
2424 SV *tmp = *src; *src = *dst; *dst = tmp; 3425 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 } 3426 }
2426 3427
3428void
3429cancel (Coro::State self)
3430 CODE:
3431 coro_state_destroy (aTHX_ self);
3432
3433SV *
3434enable_times (int enabled = enable_times)
3435 CODE:
3436{
3437 RETVAL = boolSV (enable_times);
3438
3439 if (enabled != enable_times)
3440 {
3441 enable_times = enabled;
3442
3443 coro_times_update ();
3444 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3445 }
3446}
3447 OUTPUT:
3448 RETVAL
3449
3450void
3451times (Coro::State self)
3452 PPCODE:
3453{
3454 struct coro *current = SvSTATE (coro_current);
3455
3456 if (expect_false (current == self))
3457 {
3458 coro_times_update ();
3459 coro_times_add (SvSTATE (coro_current));
3460 }
3461
3462 EXTEND (SP, 2);
3463 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3464 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3465
3466 if (expect_false (current == self))
3467 coro_times_sub (SvSTATE (coro_current));
3468}
3469
3470void
3471swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3472 CODE:
3473{
3474 struct coro *current = SvSTATE_current;
3475
3476 if (current == coro)
3477 SWAP_SVS (current);
3478
3479 if (!coro->swap_sv)
3480 coro->swap_sv = newAV ();
3481
3482 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3483 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3484
3485 if (current == coro)
3486 SWAP_SVS (current);
3487}
3488
3489
2427MODULE = Coro::State PACKAGE = Coro 3490MODULE = Coro::State PACKAGE = Coro
2428 3491
2429BOOT: 3492BOOT:
2430{ 3493{
2431 int i;
2432
2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3494 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3495 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2436 3496 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3497 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3498 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2438 SvREADONLY_on (coro_current); 3499 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3500 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3501 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3502 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2439 3503
3504 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3505 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3506 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3507 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3508
2440 coro_stash = gv_stashpv ("Coro", TRUE); 3509 coro_stash = gv_stashpv ("Coro", TRUE);
2441 3510
2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3511 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3512 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2444 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3513 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2445 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3514 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2446 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3515 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2447 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3516 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2448
2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2450 coro_ready[i] = newAV ();
2451 3517
2452 { 3518 {
2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3519 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2454 3520
2455 coroapi.schedule = api_schedule; 3521 coroapi.schedule = api_schedule;
3522 coroapi.schedule_to = api_schedule_to;
2456 coroapi.cede = api_cede; 3523 coroapi.cede = api_cede;
2457 coroapi.cede_notself = api_cede_notself; 3524 coroapi.cede_notself = api_cede_notself;
2458 coroapi.ready = api_ready; 3525 coroapi.ready = api_ready;
2459 coroapi.is_ready = api_is_ready; 3526 coroapi.is_ready = api_is_ready;
2460 coroapi.nready = coro_nready; 3527 coroapi.nready = coro_nready;
2461 coroapi.current = coro_current; 3528 coroapi.current = coro_current;
2462 3529
2463 GCoroAPI = &coroapi; 3530 /*GCoroAPI = &coroapi;*/
2464 sv_setiv (sv, (IV)&coroapi); 3531 sv_setiv (sv, (IV)&coroapi);
2465 SvREADONLY_on (sv); 3532 SvREADONLY_on (sv);
2466 } 3533 }
2467} 3534}
3535
3536SV *
3537async (...)
3538 PROTOTYPE: &@
3539 CODE:
3540 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3541 api_ready (aTHX_ RETVAL);
3542 OUTPUT:
3543 RETVAL
3544
3545void
3546_destroy (Coro::State coro)
3547 CODE:
3548 /* used by the manager thread */
3549 coro_state_destroy (aTHX_ coro);
3550 coro_call_on_destroy (aTHX_ coro);
3551
3552void
3553terminate (...)
3554 CODE:
3555 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3556
3557void
3558cancel (...)
3559 CODE:
3560 CORO_EXECUTE_SLF_XS (slf_init_cancel);
2468 3561
2469void 3562void
2470schedule (...) 3563schedule (...)
2471 CODE: 3564 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3565 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3566
3567void
3568schedule_to (...)
3569 CODE:
3570 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3571
3572void
3573cede_to (...)
3574 CODE:
3575 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2473 3576
2474void 3577void
2475cede (...) 3578cede (...)
2476 CODE: 3579 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede); 3580 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2491void 3594void
2492_set_readyhook (SV *hook) 3595_set_readyhook (SV *hook)
2493 PROTOTYPE: $ 3596 PROTOTYPE: $
2494 CODE: 3597 CODE:
2495 SvREFCNT_dec (coro_readyhook); 3598 SvREFCNT_dec (coro_readyhook);
3599 SvGETMAGIC (hook);
3600 if (SvOK (hook))
3601 {
2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3602 coro_readyhook = newSVsv (hook);
3603 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3604 }
3605 else
3606 {
3607 coro_readyhook = 0;
3608 CORO_READYHOOK = 0;
3609 }
2497 3610
2498int 3611int
2499prio (Coro::State coro, int newprio = 0) 3612prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$ 3613 PROTOTYPE: $;$
2501 ALIAS: 3614 ALIAS:
… …
2507 if (items > 1) 3620 if (items > 1)
2508 { 3621 {
2509 if (ix) 3622 if (ix)
2510 newprio = coro->prio - newprio; 3623 newprio = coro->prio - newprio;
2511 3624
2512 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3625 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2513 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3626 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2514 3627
2515 coro->prio = newprio; 3628 coro->prio = newprio;
2516 } 3629 }
2517} 3630}
2518 OUTPUT: 3631 OUTPUT:
… …
2532 CODE: 3645 CODE:
2533 RETVAL = coro_nready; 3646 RETVAL = coro_nready;
2534 OUTPUT: 3647 OUTPUT:
2535 RETVAL 3648 RETVAL
2536 3649
2537# for async_pool speedup
2538void 3650void
2539_pool_1 (SV *cb) 3651suspend (Coro::State self)
3652 PROTOTYPE: $
2540 CODE: 3653 CODE:
2541{ 3654 self->flags |= CF_SUSPENDED;
2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2544 AV *defav = GvAV (PL_defgv);
2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2546 AV *invoke_av;
2547 int i, len;
2548 3655
2549 if (!invoke) 3656void
3657resume (Coro::State self)
3658 PROTOTYPE: $
3659 CODE:
3660 self->flags &= ~CF_SUSPENDED;
3661
3662void
3663_pool_handler (...)
3664 CODE:
3665 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3666
3667void
3668async_pool (SV *cv, ...)
3669 PROTOTYPE: &@
3670 PPCODE:
3671{
3672 HV *hv = (HV *)av_pop (av_async_pool);
3673 AV *av = newAV ();
3674 SV *cb = ST (0);
3675 int i;
3676
3677 av_extend (av, items - 2);
3678 for (i = 1; i < items; ++i)
3679 av_push (av, SvREFCNT_inc_NN (ST (i)));
3680
3681 if ((SV *)hv == &PL_sv_undef)
2550 { 3682 {
2551 SV *old = PL_diehook; 3683 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2552 PL_diehook = 0; 3684 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2553 SvREFCNT_dec (old); 3685 SvREFCNT_dec (sv);
2554 croak ("\3async_pool terminate\2\n");
2555 } 3686 }
2556 3687
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2559
2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2562
2563 invoke_av = (AV *)SvRV (invoke);
2564 len = av_len (invoke_av);
2565
2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2567
2568 if (len > 0)
2569 { 3688 {
2570 av_fill (defav, len - 1); 3689 struct coro *coro = SvSTATE_hv (hv);
2571 for (i = 0; i < len; ++i) 3690
2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3691 assert (!coro->invoke_cb);
3692 assert (!coro->invoke_av);
3693 coro->invoke_cb = SvREFCNT_inc (cb);
3694 coro->invoke_av = av;
2573 } 3695 }
3696
3697 api_ready (aTHX_ (SV *)hv);
3698
3699 if (GIMME_V != G_VOID)
3700 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3701 else
3702 SvREFCNT_dec (hv);
2574} 3703}
3704
3705SV *
3706rouse_cb ()
3707 PROTOTYPE:
3708 CODE:
3709 RETVAL = coro_new_rouse_cb (aTHX);
3710 OUTPUT:
3711 RETVAL
2575 3712
2576void 3713void
2577_pool_2 (SV *cb) 3714rouse_wait (...)
3715 PROTOTYPE: ;$
3716 PPCODE:
3717 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3718
3719void
3720on_enter (SV *block)
3721 ALIAS:
3722 on_leave = 1
3723 PROTOTYPE: &
2578 CODE: 3724 CODE:
2579{ 3725{
2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv); 3726 struct coro *coro = SvSTATE_current;
3727 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2582 3728
2583 sv_setsv (cb, &PL_sv_undef); 3729 block = s_get_cv_croak (block);
2584 3730
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3731 if (!*avp)
2586 coro->saved_deffh = 0;
2587
2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
2594 croak ("\3async_pool terminate\2\n");
2595 }
2596
2597 av_clear (GvAV (PL_defgv));
2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2600
2601 coro->prio = 0;
2602
2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2604 api_trace (aTHX_ coro_current, 0);
2605
2606 av_push (av_async_pool, newSVsv (coro_current));
2607}
2608
2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2611
2612void
2613_get_state (SV *self)
2614 PROTOTYPE: $
2615 PPCODE:
2616{
2617 AV *defav = GvAV (PL_defgv);
2618 AV *av = newAV (); 3732 *avp = newAV ();
2619 int i;
2620 SV *data_sv = newSV (sizeof (struct io_state));
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624 3733
2625 data->errorno = errno; 3734 av_push (*avp, SvREFCNT_inc (block));
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 3735
2630 av_extend (av, AvFILLp (defav) + 1 + 1); 3736 if (!ix)
3737 on_enterleave_call (aTHX_ block);
2631 3738
2632 for (i = 0; i <= AvFILLp (defav); ++i) 3739 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3740 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2634 3741 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2640}
2641
2642void
2643_set_state (SV *state)
2644 PROTOTYPE: $
2645 PPCODE:
2646{
2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2650
2651 errno = data->errorno;
2652 PL_laststype = data->laststype;
2653 PL_laststatval = data->laststatval;
2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 {
2682 PUSHMARK (SP);
2683 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2685 SPAGAIN;
2686 }
2687
2688 --incede;
2689} 3742}
2690 3743
2691 3744
2692MODULE = Coro::State PACKAGE = PerlIO::cede 3745MODULE = Coro::State PACKAGE = PerlIO::cede
2693 3746
2694BOOT: 3747BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3748 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696 3749
3750
2697MODULE = Coro::State PACKAGE = Coro::Semaphore 3751MODULE = Coro::State PACKAGE = Coro::Semaphore
2698 3752
2699SV * 3753SV *
2700new (SV *klass, SV *count_ = 0) 3754new (SV *klass, SV *count = 0)
2701 CODE: 3755 CODE:
2702{ 3756{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3757 int semcnt = 1;
2704 AV *av = newAV (); 3758
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3759 if (count)
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3760 {
3761 SvGETMAGIC (count);
3762
3763 if (SvOK (count))
3764 semcnt = SvIV (count);
3765 }
3766
3767 RETVAL = sv_bless (
3768 coro_waitarray_new (aTHX_ semcnt),
3769 GvSTASH (CvGV (cv))
3770 );
2707} 3771}
3772 OUTPUT:
3773 RETVAL
3774
3775# helper for Coro::Channel and others
3776SV *
3777_alloc (int count)
3778 CODE:
3779 RETVAL = coro_waitarray_new (aTHX_ count);
2708 OUTPUT: 3780 OUTPUT:
2709 RETVAL 3781 RETVAL
2710 3782
2711SV * 3783SV *
2712count (SV *self) 3784count (SV *self)
… …
2721 adjust = 1 3793 adjust = 1
2722 CODE: 3794 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3795 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724 3796
2725void 3797void
2726down (SV *self) 3798down (...)
2727 CODE: 3799 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3800 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3801
3802void
3803wait (...)
3804 CODE:
3805 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2729 3806
2730void 3807void
2731try (SV *self) 3808try (SV *self)
2732 PPCODE: 3809 PPCODE:
2733{ 3810{
… …
2745 XSRETURN_NO; 3822 XSRETURN_NO;
2746} 3823}
2747 3824
2748void 3825void
2749waiters (SV *self) 3826waiters (SV *self)
2750 CODE: 3827 PPCODE:
2751{ 3828{
2752 AV *av = (AV *)SvRV (self); 3829 AV *av = (AV *)SvRV (self);
3830 int wcount = AvFILLp (av) + 1 - 1;
2753 3831
2754 if (GIMME_V == G_SCALAR) 3832 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3833 XPUSHs (sv_2mortal (newSViv (wcount)));
2756 else 3834 else
2757 { 3835 {
2758 int i; 3836 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1); 3837 EXTEND (SP, wcount);
2760 for (i = 1; i <= AvFILLp (av); ++i) 3838 for (i = 1; i <= wcount; ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i])); 3839 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2762 } 3840 }
2763} 3841}
2764 3842
3843MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3844
3845void
3846_may_delete (SV *sem, int count, int extra_refs)
3847 PPCODE:
3848{
3849 AV *av = (AV *)SvRV (sem);
3850
3851 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3852 && AvFILLp (av) == 0 /* no waiters, just count */
3853 && SvIV (AvARRAY (av)[0]) == count)
3854 XSRETURN_YES;
3855
3856 XSRETURN_NO;
3857}
3858
3859MODULE = Coro::State PACKAGE = Coro::Signal
3860
3861SV *
3862new (SV *klass)
3863 CODE:
3864 RETVAL = sv_bless (
3865 coro_waitarray_new (aTHX_ 0),
3866 GvSTASH (CvGV (cv))
3867 );
3868 OUTPUT:
3869 RETVAL
3870
3871void
3872wait (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3875
3876void
3877broadcast (SV *self)
3878 CODE:
3879{
3880 AV *av = (AV *)SvRV (self);
3881 coro_signal_wake (aTHX_ av, AvFILLp (av));
3882}
3883
3884void
3885send (SV *self)
3886 CODE:
3887{
3888 AV *av = (AV *)SvRV (self);
3889
3890 if (AvFILLp (av))
3891 coro_signal_wake (aTHX_ av, 1);
3892 else
3893 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3894}
3895
3896IV
3897awaited (SV *self)
3898 CODE:
3899 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3900 OUTPUT:
3901 RETVAL
3902
3903
3904MODULE = Coro::State PACKAGE = Coro::AnyEvent
3905
3906BOOT:
3907 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3908
3909void
3910_schedule (...)
3911 CODE:
3912{
3913 static int incede;
3914
3915 api_cede_notself (aTHX);
3916
3917 ++incede;
3918 while (coro_nready >= incede && api_cede (aTHX))
3919 ;
3920
3921 sv_setsv (sv_activity, &PL_sv_undef);
3922 if (coro_nready >= incede)
3923 {
3924 PUSHMARK (SP);
3925 PUTBACK;
3926 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3927 }
3928
3929 --incede;
3930}
3931
3932
3933MODULE = Coro::State PACKAGE = Coro::AIO
3934
3935void
3936_register (char *target, char *proto, SV *req)
3937 CODE:
3938{
3939 SV *req_cv = s_get_cv_croak (req);
3940 /* newXSproto doesn't return the CV on 5.8 */
3941 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3942 sv_setpv ((SV *)slf_cv, proto);
3943 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3944}
3945
3946MODULE = Coro::State PACKAGE = Coro::Select
3947
3948void
3949patch_pp_sselect ()
3950 CODE:
3951 if (!coro_old_pp_sselect)
3952 {
3953 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3954 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3955 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3956 }
3957
3958void
3959unpatch_pp_sselect ()
3960 CODE:
3961 if (coro_old_pp_sselect)
3962 {
3963 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3964 coro_old_pp_sselect = 0;
3965 }
3966

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