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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.374 by root, Fri Oct 2 19:55:59 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
108#endif 64#endif
109 65
110#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
117#endif 73#endif
118 74
119/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 76 * portable way as possible. */
121#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
123#else 80#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
125#endif 83#endif
126 84
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
128 86
129#if __GNUC__ >= 3 87#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 90# define INLINE static inline
133#else 91#else
134# define attribute(x) 92# define attribute(x)
135# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
136# define INLINE static 94# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
141 99
142#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
161 120
162static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
163 127
164static U32 cctx_gen; 128static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 129static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 130static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 132static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
139
172static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 142static SV *rv_diehook;
175static SV *rv_warnhook; 143static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
177 145
178/* async_pool helper stuff */ 146/* async_pool helper stuff */
179static SV *sv_pool_rss; 147static SV *sv_pool_rss;
180static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
182 153
183/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
184static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
185 162
186static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
188 165
189enum { 166enum {
… …
215 int valgrind_id; 192 int valgrind_id;
216#endif 193#endif
217 unsigned char flags; 194 unsigned char flags;
218} coro_cctx; 195} coro_cctx;
219 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
220enum { 201enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 207};
226 208
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 210typedef struct
229{ 211{
230 SV *defsv; 212 SV *defsv;
231 AV *defav; 213 AV *defav;
232 SV *errsv; 214 SV *errsv;
233 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
234#define VAR(name,type) type name; 217#define VAR(name,type) type name;
235# include "state.h" 218# include "state.h"
236#undef VAR 219#undef VAR
237} perl_slots; 220} perl_slots;
238 221
… …
241/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
242struct coro { 225struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 227 coro_cctx *cctx;
245 228
246 /* process data */ 229 /* ready queue */
230 struct coro *next_ready;
231
232 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 233 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 234 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
250 236
237 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 242 void (*on_destroy)(pTHX_ struct coro *coro);
256 243
257 /* statistics */ 244 /* statistics */
258 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
259 246
260 /* coro process data */ 247 /* coro process data */
261 int prio; 248 int prio;
262 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
263 251
264 /* async_pool */ 252 /* async_pool */
265 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
266 266
267 /* linked list */ 267 /* linked list */
268 struct coro *next, *prev; 268 struct coro *next, *prev;
269}; 269};
270 270
271typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273 273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 277static struct CoroSLF slf_frame; /* the current slf frame */
275 278
276/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
277 280
278#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
279#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
280#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
281#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
282#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
283#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
284 287
285/* for Coro.pm */ 288/* for Coro.pm */
286static SV *coro_current; 289static SV *coro_current;
287static SV *coro_readyhook; 290static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
292static CV *cv_coro_run, *cv_coro_terminate;
289static struct coro *coro_first; 293static struct coro *coro_first;
290#define coro_nready coroapi.nready 294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
291 315
292/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
293 317
294static SV * 318static SV *
295coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
319 get_hv (name, create); 343 get_hv (name, create);
320#endif 344#endif
321 return get_hv (name, create); 345 return get_hv (name, create);
322} 346}
323 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
324static AV * 447static AV *
325coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
326{ 449{
327 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
329 452
330 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 459#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist); 461 --AvFILLp (padlist);
339 462
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
341 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
342 465
343 return newpadlist; 466 return newpadlist;
344} 467}
345 468
346static void 469static void
347free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
348{ 471{
349 /* may be during global destruction */ 472 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
351 { 474 {
352 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
353 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
354 { 478 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
356 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
357 { 481 I32 j = AvFILLp (av);
358 SV *sv; 482
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
360 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
361
362 SvREFCNT_dec (*svp);
363 }
364 } 488 }
365 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
366 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
367 } 494 }
368} 495}
369 496
370static int 497static int
371coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
372{ 499{
373 AV *padlist; 500 AV *padlist;
374 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
375 506
376 /* casting is fun. */ 507 /* casting is fun. */
377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
378 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
379 510
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 512
382 return 0; 513 return 0;
383} 514}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 515
388static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 517 0, 0, 0, 0,
390 coro_cv_free 518 coro_cv_free
391}; 519};
392
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 520
442/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
443static void 522static void
444get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
445{ 524{
… …
451 else 530 else
452 { 531 {
453#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
460#else 539#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 541#endif
463 } 542 }
464} 543}
465 544
466static void 545static void
… …
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
474 553
475 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
476 555
477 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
479 558
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 560}
482 561
483/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
484 617
485static void 618static void
486load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
487{ 620{
488 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
489 c->slot = 0; 622 c->slot = 0;
490 623
491 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
492 625
493 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
497 631
498 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
499 # include "state.h" 633 # include "state.h"
500 #undef VAR 634 #undef VAR
501 635
… …
513 } 647 }
514 648
515 PUTBACK; 649 PUTBACK;
516 } 650 }
517 651
518 slf_frame = c->slf_frame; 652 slf_frame = c->slf_frame;
653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
519} 672}
520 673
521static void 674static void
522save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
523{ 676{
677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 696 c->slf_frame = slf_frame;
525 697
526 { 698 {
527 dSP; 699 dSP;
528 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
… …
540 { 712 {
541 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
542 { 714 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
544 716
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 718 {
547 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
548 720
549 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
550 { 722 {
551 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 723 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 724 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 725 PUSHs ((SV *)cv);
555 726
556 CvDEPTH (cv) = 0; 727 CvDEPTH (cv) = 0;
… …
574 /* we manually unroll here, as usually 2 slots is enough */ 745 /* we manually unroll here, as usually 2 slots is enough */
575 if (SLOT_COUNT >= 1) CXINC; 746 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC; 747 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC; 748 if (SLOT_COUNT >= 3) CXINC;
578 { 749 {
579 int i; 750 unsigned int i;
580 for (i = 3; i < SLOT_COUNT; ++i) 751 for (i = 3; i < SLOT_COUNT; ++i)
581 CXINC; 752 CXINC;
582 } 753 }
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 754 cxstack_ix -= SLOT_COUNT; /* undo allocation */
584 755
585 c->mainstack = PL_mainstack; 756 c->mainstack = PL_mainstack;
586 757
587 { 758 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 759 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 760
590 slot->defav = GvAV (PL_defgv); 761 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV; 762 slot->defsv = DEFSV;
592 slot->errsv = ERRSV; 763 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv); 764 slot->irsgv = GvSV (irsgv);
765 slot->hinthv = GvHV (PL_hintgv);
594 766
595 #define VAR(name,type) slot->name = PL_ ## name; 767 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 768 # include "state.h"
597 #undef VAR 769 #undef VAR
598 } 770 }
… …
603 * of perl.c:init_stacks, except that it uses less memory 775 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 776 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 777 * not usually need a lot of stackspace.
606 */ 778 */
607#if CORO_PREFER_PERL_FUNCTIONS 779#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 780# define coro_init_stacks(thx) init_stacks ()
609#else 781#else
610static void 782static void
611coro_init_stacks (pTHX) 783coro_init_stacks (pTHX)
612{ 784{
613 PL_curstackinfo = new_stackinfo(32, 8); 785 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 848#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 849 Safefree (PL_retstack);
678#endif 850#endif
679} 851}
680 852
853#define CORO_RSS \
854 rss += sizeof (SYM (curstackinfo)); \
855 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
856 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
857 rss += SYM (tmps_max) * sizeof (SV *); \
858 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
859 rss += SYM (scopestack_max) * sizeof (I32); \
860 rss += SYM (savestack_max) * sizeof (ANY);
861
681static size_t 862static size_t
682coro_rss (pTHX_ struct coro *coro) 863coro_rss (pTHX_ struct coro *coro)
683{ 864{
684 size_t rss = sizeof (*coro); 865 size_t rss = sizeof (*coro);
685 866
686 if (coro->mainstack) 867 if (coro->mainstack)
687 { 868 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 869 if (coro->flags & CF_RUNNING)
692 { 870 {
693 slot = &tmp_slot; 871 #define SYM(sym) PL_ ## sym
694 872 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 873 #undef SYM
698 } 874 }
699 else 875 else
700 slot = coro->slot;
701
702 if (slot)
703 { 876 {
704 rss += sizeof (slot->curstackinfo); 877 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 878 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 879 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 880 }
716 } 881 }
717 882
718 return rss; 883 return rss;
719} 884}
… …
732#endif 897#endif
733 898
734/* 899/*
735 * This overrides the default magic get method of %SIG elements. 900 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 901 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 902 * and instead of trying to save and restore the hash elements, we just provide
738 * readback here. 903 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 904 */
743static int 905static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 906coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 907{
746 const char *s = MgPV_nolen_const (mg); 908 const char *s = MgPV_nolen_const (mg);
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 961 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 962
801 if (svp) 963 if (svp)
802 { 964 {
803 SV *old = *svp; 965 SV *old = *svp;
804 *svp = newSVsv (sv); 966 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 967 SvREFCNT_dec (old);
806 return 0; 968 return 0;
807 } 969 }
808 } 970 }
809 971
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 983slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 984{
823 return 0; 985 return 0;
824} 986}
825 987
826static void 988static int
989slf_check_repeat (pTHX_ struct CoroSLF *frame)
990{
991 return 1;
992}
993
994static UNOP init_perl_op;
995
996static void NOINLINE /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 997init_perl (pTHX_ struct coro *coro)
828{ 998{
829 /* 999 /*
830 * emulate part of the perl startup here. 1000 * emulate part of the perl startup here.
831 */ 1001 */
832 coro_init_stacks (aTHX); 1002 coro_init_stacks (aTHX);
833 1003
834 PL_runops = RUNOPS_DEFAULT; 1004 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 1005 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 1006 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 1007 PL_comppad = 0;
1008 PL_comppad_name = 0;
1009 PL_comppad_name_fill = 0;
1010 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 1011 PL_curpm = 0;
839 PL_curpad = 0; 1012 PL_curpad = 0;
840 PL_localizing = 0; 1013 PL_localizing = 0;
841 PL_dirty = 0; 1014 PL_dirty = 0;
842 PL_restartop = 0; 1015 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 1016#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 1017 PL_parser = 0;
845#endif 1018#endif
1019 PL_hints = 0;
846 1020
847 /* recreate the die/warn hooks */ 1021 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1022 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1023 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
850 1024
851 GvSV (PL_defgv) = newSV (0); 1025 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 1026 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 1027 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1028 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1029 GvHV (PL_hintgv) = 0;
855 PL_rs = newSVsv (GvSV (irsgv)); 1030 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1031 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 1032
858 { 1033 {
859 dSP; 1034 dSP;
860 UNOP myop; 1035 UNOP myop;
861 1036
862 Zero (&myop, 1, UNOP); 1037 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 1038 myop.op_next = Nullop;
1039 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 1040 myop.op_flags = OPf_WANT_VOID;
865 1041
866 PUSHMARK (SP); 1042 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1043 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 1044 PUTBACK;
869 PL_op = (OP *)&myop; 1045 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1046 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 1047 }
873 1048
874 /* this newly created coroutine might be run on an existing cctx which most 1049 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1050 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 1051 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1052 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1053 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879}
880 1054
1055 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1056 init_perl_op.op_next = PL_op;
1057 init_perl_op.op_type = OP_ENTERSUB;
1058 init_perl_op.op_ppaddr = pp_slf;
1059 /* no flags etc. required, as an init function won't be called */
1060
1061 PL_op = (OP *)&init_perl_op;
1062
1063 /* copy throw, in case it was set before init_perl */
1064 CORO_THROW = coro->except;
1065
1066 SWAP_SVS (coro);
1067
1068 if (expect_false (enable_times))
1069 {
1070 coro_times_update ();
1071 coro_times_sub (coro);
1072 }
1073}
1074
881static void 1075static void
882coro_destruct (pTHX_ struct coro *coro) 1076coro_unwind_stacks (pTHX)
883{ 1077{
884 if (!IN_DESTRUCT) 1078 if (!IN_DESTRUCT)
885 { 1079 {
886 /* restore all saved variables and stuff */ 1080 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 1081 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 1089 POPSTACK_TO (PL_mainstack);
896 1090
897 /* unwind main stack */ 1091 /* unwind main stack */
898 dounwind (-1); 1092 dounwind (-1);
899 } 1093 }
1094}
900 1095
901 SvREFCNT_dec (GvSV (PL_defgv)); 1096static void
902 SvREFCNT_dec (GvAV (PL_defgv)); 1097destroy_perl (pTHX_ struct coro *coro)
903 SvREFCNT_dec (GvSV (PL_errgv)); 1098{
904 SvREFCNT_dec (PL_defoutgv); 1099 SV *svf [9];
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907 1100
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910 1101 {
1102 struct coro *current = SvSTATE_current;
1103
1104 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1105
1106 save_perl (aTHX_ current);
1107 load_perl (aTHX_ coro);
1108
1109 coro_unwind_stacks (aTHX);
1110 coro_destruct_stacks (aTHX);
1111
1112 /* restore swapped sv's */
1113 SWAP_SVS (coro);
1114
1115 // now save some sv's to be free'd later
1116 svf [0] = GvSV (PL_defgv);
1117 svf [1] = (SV *)GvAV (PL_defgv);
1118 svf [2] = GvSV (PL_errgv);
1119 svf [3] = (SV *)PL_defoutgv;
1120 svf [4] = PL_rs;
1121 svf [5] = GvSV (irsgv);
1122 svf [6] = (SV *)GvHV (PL_hintgv);
1123 svf [7] = PL_diehook;
1124 svf [8] = PL_warnhook;
1125 assert (9 == sizeof (svf) / sizeof (*svf));
1126
1127 load_perl (aTHX_ current);
1128 }
1129
1130 {
1131 unsigned int i;
1132
1133 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1134 SvREFCNT_dec (svf [i]);
1135
911 SvREFCNT_dec (coro->saved_deffh); 1136 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1137 SvREFCNT_dec (coro->rouse_cb);
913 1138 SvREFCNT_dec (coro->invoke_cb);
914 coro_destruct_stacks (aTHX); 1139 SvREFCNT_dec (coro->invoke_av);
1140 SvREFCNT_dec (coro->swap_sv);
1141 }
915} 1142}
916 1143
917INLINE void 1144INLINE void
918free_coro_mortal (pTHX) 1145free_coro_mortal (pTHX)
919{ 1146{
… …
927static int 1154static int
928runops_trace (pTHX) 1155runops_trace (pTHX)
929{ 1156{
930 COP *oldcop = 0; 1157 COP *oldcop = 0;
931 int oldcxix = -2; 1158 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1159
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1160 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1161 {
937 PERL_ASYNC_CHECK (); 1162 PERL_ASYNC_CHECK ();
938 1163
939 if (cctx->flags & CC_TRACE_ALL) 1164 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1165 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1166 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1167 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1168 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1169 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1170 AV *av = newAV (); /* return values */
946 SV **cb; 1171 SV **cb;
… …
983 1208
984 if (PL_curcop != &PL_compiling) 1209 if (PL_curcop != &PL_compiling)
985 { 1210 {
986 SV **cb; 1211 SV **cb;
987 1212
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1213 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1214 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1215 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1216
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1217 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1218 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1219 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1220 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1221 SV *fullname = sv_2mortal (newSV (0));
998 1222
999 if (isGV (gv)) 1223 if (isGV (gv))
… …
1004 SAVETMPS; 1228 SAVETMPS;
1005 EXTEND (SP, 3); 1229 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1230 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1231 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1232 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1233 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1234 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1235 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1236 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1237 SPAGAIN;
1014 FREETMPS; 1238 FREETMPS;
… …
1017 } 1241 }
1018 1242
1019 oldcxix = cxstack_ix; 1243 oldcxix = cxstack_ix;
1020 } 1244 }
1021 1245
1022 if (cctx->flags & CC_TRACE_LINE) 1246 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1247 {
1024 dSP; 1248 dSP;
1025 1249
1026 PL_runops = RUNOPS_DEFAULT; 1250 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1251 ENTER;
… …
1046 1270
1047 TAINT_NOT; 1271 TAINT_NOT;
1048 return 0; 1272 return 0;
1049} 1273}
1050 1274
1275static struct CoroSLF cctx_ssl_frame;
1276
1051static void 1277static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1278slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1279{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1280 ta->prev = 0;
1056} 1281}
1057 1282
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1283static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1284slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1285{
1061/* also initialises PL_top_env */ 1286 *frame = cctx_ssl_frame;
1287
1288 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1289}
1290
1291/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062static void NOINLINE 1292static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1293cctx_prepare (pTHX)
1064{ 1294{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1295 PL_top_env = &PL_start_env;
1069 1296
1070 if (cctx->flags & CC_TRACE) 1297 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1298 PL_runops = runops_trace;
1072 1299
1073 Zero (&myop, 1, UNOP); 1300 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1301 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1302 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1303 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1304
1077 PUSHMARK (SP); 1305 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1306 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1307
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1308 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1309 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1310}
1086 1311
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1312/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1313INLINE void
1089transfer_tail (pTHX) 1314transfer_tail (pTHX)
… …
1108 /* normally we would need to skip the entersub here */ 1333 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1334 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1335 /* PL_nop = PL_nop->op_next */
1111 1336
1112 /* inject a fake subroutine call to cctx_init */ 1337 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1338 cctx_prepare (aTHX);
1114 1339
1115 /* cctx_run is the alternative tail of transfer() */ 1340 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1341 transfer_tail (aTHX);
1117 1342
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1343 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1344 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1345 perl_run (PL_curinterp);
1346 /*
1347 * Unfortunately, there is no way to get at the return values of the
1348 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1349 * runtime errors here, as this is just a random interpreter, not a thread.
1350 */
1121 1351
1122 /* 1352 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1353 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1354 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1355 * reason for perl_run to return. We try to exit by jumping to the
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1356 * bootstrap-time "top" top_env, as we cannot restore the "main"
1127 * coroutine as Coro has no such concept 1357 * coroutine as Coro has no such concept.
1358 * This actually isn't valid with the pthread backend, but OSes requiring
1359 * that backend are too broken to do it in a standards-compliant way.
1128 */ 1360 */
1129 PL_top_env = main_top_env; 1361 PL_top_env = main_top_env;
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1362 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1363 }
1132} 1364}
… …
1209cctx_destroy (coro_cctx *cctx) 1441cctx_destroy (coro_cctx *cctx)
1210{ 1442{
1211 if (!cctx) 1443 if (!cctx)
1212 return; 1444 return;
1213 1445
1446 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1447
1214 --cctx_count; 1448 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1449 coro_destroy (&cctx->cctx);
1216 1450
1217 /* coro_transfer creates new, empty cctx's */ 1451 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1452 if (cctx->sptr)
… …
1276/** coroutine switching *****************************************************/ 1510/** coroutine switching *****************************************************/
1277 1511
1278static void 1512static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1513transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1514{
1515 /* TODO: throwing up here is considered harmful */
1516
1281 if (expect_true (prev != next)) 1517 if (expect_true (prev != next))
1282 { 1518 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1519 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1520 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1521
1286 if (expect_false (next->flags & CF_RUNNING))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED)) 1522 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1523 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1524
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1525#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1526 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1527 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1528#endif
1296 } 1529 }
1297} 1530}
1298 1531
1299/* always use the TRANSFER macro */ 1532/* always use the TRANSFER macro */
1300static void NOINLINE 1533static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1534transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1535{
1303 dSTACKLEVEL; 1536 dSTACKLEVEL;
1304 1537
1305 /* sometimes transfer is only called to set idle_sp */ 1538 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1539 if (expect_false (!prev))
1307 { 1540 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1541 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1542 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1543 }
1311 else if (expect_true (prev != next)) 1544 else if (expect_true (prev != next))
1312 { 1545 {
1313 coro_cctx *prev__cctx; 1546 coro_cctx *cctx_prev;
1314 1547
1315 if (expect_false (prev->flags & CF_NEW)) 1548 if (expect_false (prev->flags & CF_NEW))
1316 { 1549 {
1317 /* create a new empty/source context */ 1550 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1551 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1552 prev->flags |= CF_RUNNING;
1321 } 1553 }
1322 1554
1323 prev->flags &= ~CF_RUNNING; 1555 prev->flags &= ~CF_RUNNING;
… …
1329 if (expect_false (next->flags & CF_NEW)) 1561 if (expect_false (next->flags & CF_NEW))
1330 { 1562 {
1331 /* need to start coroutine */ 1563 /* need to start coroutine */
1332 next->flags &= ~CF_NEW; 1564 next->flags &= ~CF_NEW;
1333 /* setup coroutine call */ 1565 /* setup coroutine call */
1334 coro_setup (aTHX_ next); 1566 init_perl (aTHX_ next);
1335 } 1567 }
1336 else 1568 else
1337 load_perl (aTHX_ next); 1569 load_perl (aTHX_ next);
1338 1570
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1571 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1572 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1573 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1574 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1575 && !force_cctx
1346 )) 1576 ))
1347 { 1577 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1578 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1579 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1580
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1581 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1582 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1583 if (expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1584 if (expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1585 next->cctx = cctx_get (aTHX);
1358 1586
1359 cctx_put (prev__cctx); 1587 cctx_put (cctx_current);
1360 } 1588 }
1589 else
1590 prev->cctx = cctx_current;
1361 1591
1362 ++next->usecount; 1592 ++next->usecount;
1363 1593
1364 if (expect_true (!next->cctx)) 1594 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1595 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1596
1367 if (expect_false (prev__cctx != next->cctx)) 1597 next->cctx = 0;
1598
1599 if (expect_false (cctx_prev != cctx_current))
1368 { 1600 {
1369 prev__cctx->top_env = PL_top_env; 1601 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1602 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1603 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1604 }
1373 1605
1374 transfer_tail (aTHX); 1606 transfer_tail (aTHX);
1375 } 1607 }
1376} 1608}
… …
1384coro_state_destroy (pTHX_ struct coro *coro) 1616coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1617{
1386 if (coro->flags & CF_DESTROYED) 1618 if (coro->flags & CF_DESTROYED)
1387 return 0; 1619 return 0;
1388 1620
1389 if (coro->on_destroy) 1621 if (coro->on_destroy && !PL_dirty)
1390 coro->on_destroy (aTHX_ coro); 1622 coro->on_destroy (aTHX_ coro);
1391 1623
1392 coro->flags |= CF_DESTROYED; 1624 coro->flags |= CF_DESTROYED;
1393 1625
1394 if (coro->flags & CF_READY) 1626 if (coro->flags & CF_READY)
… …
1398 --coro_nready; 1630 --coro_nready;
1399 } 1631 }
1400 else 1632 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1633 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1634
1403 if (coro->mainstack && coro->mainstack != main_mainstack) 1635 if (coro->mainstack
1404 { 1636 && coro->mainstack != main_mainstack
1405 struct coro temp; 1637 && coro->slot
1406 1638 && !PL_dirty)
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1408
1409 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro); 1639 destroy_perl (aTHX_ coro);
1411
1412 coro_destruct (aTHX_ coro);
1413
1414 load_perl (aTHX_ &temp);
1415
1416 coro->slot = 0;
1417 }
1418 1640
1419 cctx_destroy (coro->cctx); 1641 cctx_destroy (coro->cctx);
1642 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1643 SvREFCNT_dec (coro->args);
1644 SvREFCNT_dec (CORO_THROW);
1421 1645
1422 if (coro->next) coro->next->prev = coro->prev; 1646 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1647 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1648 if (coro == coro_first) coro_first = coro->next;
1425 1649
… …
1484/** Coro ********************************************************************/ 1708/** Coro ********************************************************************/
1485 1709
1486INLINE void 1710INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1711coro_enq (pTHX_ struct coro *coro)
1488{ 1712{
1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1713 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1490}
1491 1714
1492INLINE SV * 1715 SvREFCNT_inc_NN (coro->hv);
1716
1717 coro->next_ready = 0;
1718 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1719 ready [1] = coro;
1720}
1721
1722INLINE struct coro *
1493coro_deq (pTHX) 1723coro_deq (pTHX)
1494{ 1724{
1495 int prio; 1725 int prio;
1496 1726
1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1727 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1498 if (AvFILLp (coro_ready [prio]) >= 0) 1728 {
1499 return av_shift (coro_ready [prio]); 1729 struct coro **ready = coro_ready [prio];
1730
1731 if (ready [0])
1732 {
1733 struct coro *coro = ready [0];
1734 ready [0] = coro->next_ready;
1735 return coro;
1736 }
1737 }
1500 1738
1501 return 0; 1739 return 0;
1740}
1741
1742static void
1743invoke_sv_ready_hook_helper (void)
1744{
1745 dTHX;
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1502} 1757}
1503 1758
1504static int 1759static int
1505api_ready (pTHX_ SV *coro_sv) 1760api_ready (pTHX_ SV *coro_sv)
1506{ 1761{
1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1510
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1515 1763
1516 if (coro->flags & CF_READY) 1764 if (coro->flags & CF_READY)
1517 return 0; 1765 return 0;
1518 1766
1519 coro->flags |= CF_READY; 1767 coro->flags |= CF_READY;
1520 1768
1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro); 1769 coro_enq (aTHX_ coro);
1525 ++coro_nready;
1526 1770
1527 if (sv_hook) 1771 if (!coro_nready++)
1528 { 1772 if (coroapi.readyhook)
1529 dSP; 1773 coroapi.readyhook ();
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1545 1774
1546 return 1; 1775 return 1;
1547} 1776}
1548 1777
1549static int 1778static int
1550api_is_ready (pTHX_ SV *coro_sv) 1779api_is_ready (pTHX_ SV *coro_sv)
1551{ 1780{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1781 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1782}
1554 1783
1784/* expects to own a reference to next->hv */
1555INLINE void 1785INLINE void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1786prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1787{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1788 SV *prev_sv = SvRV (coro_current);
1789
1598 ta->prev = SvSTATE_hv (prev_sv); 1790 ta->prev = SvSTATE_hv (prev_sv);
1791 ta->next = next;
1792
1599 TRANSFER_CHECK (*ta); 1793 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1794
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1795 SvRV_set (coro_current, (SV *)next->hv);
1603 1796
1604 free_coro_mortal (aTHX); 1797 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1798 coro_mortal = prev_sv;
1606} 1799}
1607 1800
1801static void
1802prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1803{
1804 for (;;)
1805 {
1806 struct coro *next = coro_deq (aTHX);
1807
1808 if (expect_true (next))
1809 {
1810 /* cannot transfer to destroyed coros, skip and look for next */
1811 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1812 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1813 else
1814 {
1815 next->flags &= ~CF_READY;
1816 --coro_nready;
1817
1818 prepare_schedule_to (aTHX_ ta, next);
1819 break;
1820 }
1821 }
1822 else
1823 {
1824 /* nothing to schedule: call the idle handler */
1825 if (SvROK (sv_idle)
1826 && SvOBJECT (SvRV (sv_idle)))
1827 {
1828 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1829 api_ready (aTHX_ SvRV (sv_idle));
1830 --coro_nready;
1831 }
1832 else
1833 {
1834 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1835 dSP;
1836
1837 ENTER;
1838 SAVETMPS;
1839
1840 PUSHMARK (SP);
1841 PUTBACK;
1842 call_sv (sv_idle, G_VOID | G_DISCARD);
1843
1844 FREETMPS;
1845 LEAVE;
1846 }
1847 }
1848 }
1849}
1850
1608INLINE void 1851INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1852prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1853{
1611 api_ready (aTHX_ coro_current); 1854 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1855 prepare_schedule (aTHX_ ta);
… …
1631{ 1874{
1632 struct coro_transfer_args ta; 1875 struct coro_transfer_args ta;
1633 1876
1634 prepare_schedule (aTHX_ &ta); 1877 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1878 TRANSFER (ta, 1);
1879}
1880
1881static void
1882api_schedule_to (pTHX_ SV *coro_sv)
1883{
1884 struct coro_transfer_args ta;
1885 struct coro *next = SvSTATE (coro_sv);
1886
1887 SvREFCNT_inc_NN (coro_sv);
1888 prepare_schedule_to (aTHX_ &ta, next);
1636} 1889}
1637 1890
1638static int 1891static int
1639api_cede (pTHX) 1892api_cede (pTHX)
1640{ 1893{
… …
1669static void 1922static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 1923api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1924{
1672 struct coro *coro = SvSTATE (coro_sv); 1925 struct coro *coro = SvSTATE (coro_sv);
1673 1926
1927 if (coro->flags & CF_RUNNING)
1928 croak ("cannot enable tracing on a running coroutine, caught");
1929
1674 if (flags & CC_TRACE) 1930 if (flags & CC_TRACE)
1675 { 1931 {
1676 if (!coro->cctx) 1932 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 1933 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 1934 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 1935 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 1936
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1937 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 1938 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1939 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 1940 {
… …
1687 if (coro->flags & CF_RUNNING) 1943 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1944 PL_runops = RUNOPS_DEFAULT;
1689 else 1945 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1946 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1947 }
1948}
1949
1950static void
1951coro_call_on_destroy (pTHX_ struct coro *coro)
1952{
1953 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1954 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1955
1956 if (on_destroyp)
1957 {
1958 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1959
1960 while (AvFILLp (on_destroy) >= 0)
1961 {
1962 dSP; /* don't disturb outer sp */
1963 SV *cb = av_pop (on_destroy);
1964
1965 PUSHMARK (SP);
1966
1967 if (statusp)
1968 {
1969 int i;
1970 AV *status = (AV *)SvRV (*statusp);
1971 EXTEND (SP, AvFILLp (status) + 1);
1972
1973 for (i = 0; i <= AvFILLp (status); ++i)
1974 PUSHs (AvARRAY (status)[i]);
1975 }
1976
1977 PUTBACK;
1978 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1979 }
1980 }
1981}
1982
1983static void
1984slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1985{
1986 int i;
1987 HV *hv = (HV *)SvRV (coro_current);
1988 AV *av = newAV ();
1989
1990 /* items are actually not so common, so optimise for this case */
1991 if (items)
1992 {
1993 av_extend (av, items - 1);
1994
1995 for (i = 0; i < items; ++i)
1996 av_push (av, SvREFCNT_inc_NN (arg [i]));
1997 }
1998
1999 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2000
2001 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2002 api_ready (aTHX_ sv_manager);
2003
2004 frame->prepare = prepare_schedule;
2005 frame->check = slf_check_repeat;
2006
2007 /* as a minor optimisation, we could unwind all stacks here */
2008 /* but that puts extra pressure on pp_slf, and is not worth much */
2009 /*coro_unwind_stacks (aTHX);*/
2010}
2011
2012/*****************************************************************************/
2013/* async pool handler */
2014
2015static int
2016slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2017{
2018 HV *hv = (HV *)SvRV (coro_current);
2019 struct coro *coro = (struct coro *)frame->data;
2020
2021 if (!coro->invoke_cb)
2022 return 1; /* loop till we have invoke */
2023 else
2024 {
2025 hv_store (hv, "desc", sizeof ("desc") - 1,
2026 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2027
2028 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2029
2030 {
2031 dSP;
2032 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2033 PUTBACK;
2034 }
2035
2036 SvREFCNT_dec (GvAV (PL_defgv));
2037 GvAV (PL_defgv) = coro->invoke_av;
2038 coro->invoke_av = 0;
2039
2040 return 0;
2041 }
2042}
2043
2044static void
2045slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2046{
2047 HV *hv = (HV *)SvRV (coro_current);
2048 struct coro *coro = SvSTATE_hv ((SV *)hv);
2049
2050 if (expect_true (coro->saved_deffh))
2051 {
2052 /* subsequent iteration */
2053 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2054 coro->saved_deffh = 0;
2055
2056 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2057 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2058 {
2059 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2060 coro->invoke_av = newAV ();
2061
2062 frame->prepare = prepare_nop;
2063 }
2064 else
2065 {
2066 av_clear (GvAV (PL_defgv));
2067 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2068
2069 coro->prio = 0;
2070
2071 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2072 api_trace (aTHX_ coro_current, 0);
2073
2074 frame->prepare = prepare_schedule;
2075 av_push (av_async_pool, SvREFCNT_inc (hv));
2076 }
2077 }
2078 else
2079 {
2080 /* first iteration, simply fall through */
2081 frame->prepare = prepare_nop;
2082 }
2083
2084 frame->check = slf_check_pool_handler;
2085 frame->data = (void *)coro;
2086}
2087
2088/*****************************************************************************/
2089/* rouse callback */
2090
2091#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2092
2093static void
2094coro_rouse_callback (pTHX_ CV *cv)
2095{
2096 dXSARGS;
2097 SV *data = (SV *)S_GENSUB_ARG;
2098
2099 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2100 {
2101 /* first call, set args */
2102 SV *coro = SvRV (data);
2103 AV *av = newAV ();
2104
2105 SvRV_set (data, (SV *)av);
2106
2107 /* better take a full copy of the arguments */
2108 while (items--)
2109 av_store (av, items, newSVsv (ST (items)));
2110
2111 api_ready (aTHX_ coro);
2112 SvREFCNT_dec (coro);
2113 }
2114
2115 XSRETURN_EMPTY;
2116}
2117
2118static int
2119slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2120{
2121 SV *data = (SV *)frame->data;
2122
2123 if (CORO_THROW)
2124 return 0;
2125
2126 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2127 return 1;
2128
2129 /* now push all results on the stack */
2130 {
2131 dSP;
2132 AV *av = (AV *)SvRV (data);
2133 int i;
2134
2135 EXTEND (SP, AvFILLp (av) + 1);
2136 for (i = 0; i <= AvFILLp (av); ++i)
2137 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2138
2139 /* we have stolen the elements, so set length to zero and free */
2140 AvFILLp (av) = -1;
2141 av_undef (av);
2142
2143 PUTBACK;
2144 }
2145
2146 return 0;
2147}
2148
2149static void
2150slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2151{
2152 SV *cb;
2153
2154 if (items)
2155 cb = arg [0];
2156 else
2157 {
2158 struct coro *coro = SvSTATE_current;
2159
2160 if (!coro->rouse_cb)
2161 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2162
2163 cb = sv_2mortal (coro->rouse_cb);
2164 coro->rouse_cb = 0;
2165 }
2166
2167 if (!SvROK (cb)
2168 || SvTYPE (SvRV (cb)) != SVt_PVCV
2169 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2170 croak ("Coro::rouse_wait called with illegal callback argument,");
2171
2172 {
2173 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2174 SV *data = (SV *)S_GENSUB_ARG;
2175
2176 frame->data = (void *)data;
2177 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2178 frame->check = slf_check_rouse_wait;
2179 }
2180}
2181
2182static SV *
2183coro_new_rouse_cb (pTHX)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv (hv);
2187 SV *data = newRV_inc ((SV *)hv);
2188 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2189
2190 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2191 SvREFCNT_dec (data); /* magicext increases the refcount */
2192
2193 SvREFCNT_dec (coro->rouse_cb);
2194 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2195
2196 return cb;
2197}
2198
2199/*****************************************************************************/
2200/* schedule-like-function opcode (SLF) */
2201
2202static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2203static const CV *slf_cv;
2204static SV **slf_argv;
2205static int slf_argc, slf_arga; /* count, allocated */
2206static I32 slf_ax; /* top of stack, for restore */
2207
2208/* this restores the stack in the case we patched the entersub, to */
2209/* recreate the stack frame as perl will on following calls */
2210/* since entersub cleared the stack */
2211static OP *
2212pp_restore (pTHX)
2213{
2214 int i;
2215 SV **SP = PL_stack_base + slf_ax;
2216
2217 PUSHMARK (SP);
2218
2219 EXTEND (SP, slf_argc + 1);
2220
2221 for (i = 0; i < slf_argc; ++i)
2222 PUSHs (sv_2mortal (slf_argv [i]));
2223
2224 PUSHs ((SV *)CvGV (slf_cv));
2225
2226 RETURNOP (slf_restore.op_first);
2227}
2228
2229static void
2230slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2231{
2232 SV **arg = (SV **)slf_frame.data;
2233
2234 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2235}
2236
2237static void
2238slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2239{
2240 if (items != 2)
2241 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2242
2243 frame->prepare = slf_prepare_transfer;
2244 frame->check = slf_check_nop;
2245 frame->data = (void *)arg; /* let's hope it will stay valid */
2246}
2247
2248static void
2249slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2250{
2251 frame->prepare = prepare_schedule;
2252 frame->check = slf_check_nop;
2253}
2254
2255static void
2256slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2257{
2258 struct coro *next = (struct coro *)slf_frame.data;
2259
2260 SvREFCNT_inc_NN (next->hv);
2261 prepare_schedule_to (aTHX_ ta, next);
2262}
2263
2264static void
2265slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2266{
2267 if (!items)
2268 croak ("Coro::schedule_to expects a coroutine argument, caught");
2269
2270 frame->data = (void *)SvSTATE (arg [0]);
2271 frame->prepare = slf_prepare_schedule_to;
2272 frame->check = slf_check_nop;
2273}
2274
2275static void
2276slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2277{
2278 api_ready (aTHX_ SvRV (coro_current));
2279
2280 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2281}
2282
2283static void
2284slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2285{
2286 frame->prepare = prepare_cede;
2287 frame->check = slf_check_nop;
2288}
2289
2290static void
2291slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 frame->prepare = prepare_cede_notself;
2294 frame->check = slf_check_nop;
2295}
2296
2297/*
2298 * these not obviously related functions are all rolled into one
2299 * function to increase chances that they all will call transfer with the same
2300 * stack offset
2301 * SLF stands for "schedule-like-function".
2302 */
2303static OP *
2304pp_slf (pTHX)
2305{
2306 I32 checkmark; /* mark SP to see how many elements check has pushed */
2307
2308 /* set up the slf frame, unless it has already been set-up */
2309 /* the latter happens when a new coro has been started */
2310 /* or when a new cctx was attached to an existing coroutine */
2311 if (expect_true (!slf_frame.prepare))
2312 {
2313 /* first iteration */
2314 dSP;
2315 SV **arg = PL_stack_base + TOPMARK + 1;
2316 int items = SP - arg; /* args without function object */
2317 SV *gv = *sp;
2318
2319 /* do a quick consistency check on the "function" object, and if it isn't */
2320 /* for us, divert to the real entersub */
2321 if (SvTYPE (gv) != SVt_PVGV
2322 || !GvCV (gv)
2323 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2324 return PL_ppaddr[OP_ENTERSUB](aTHX);
2325
2326 if (!(PL_op->op_flags & OPf_STACKED))
2327 {
2328 /* ampersand-form of call, use @_ instead of stack */
2329 AV *av = GvAV (PL_defgv);
2330 arg = AvARRAY (av);
2331 items = AvFILLp (av) + 1;
2332 }
2333
2334 /* now call the init function, which needs to set up slf_frame */
2335 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2336 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2337
2338 /* pop args */
2339 SP = PL_stack_base + POPMARK;
2340
2341 PUTBACK;
2342 }
2343
2344 /* now that we have a slf_frame, interpret it! */
2345 /* we use a callback system not to make the code needlessly */
2346 /* complicated, but so we can run multiple perl coros from one cctx */
2347
2348 do
2349 {
2350 struct coro_transfer_args ta;
2351
2352 slf_frame.prepare (aTHX_ &ta);
2353 TRANSFER (ta, 0);
2354
2355 checkmark = PL_stack_sp - PL_stack_base;
2356 }
2357 while (slf_frame.check (aTHX_ &slf_frame));
2358
2359 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2360
2361 /* exception handling */
2362 if (expect_false (CORO_THROW))
2363 {
2364 SV *exception = sv_2mortal (CORO_THROW);
2365
2366 CORO_THROW = 0;
2367 sv_setsv (ERRSV, exception);
2368 croak (0);
2369 }
2370
2371 /* return value handling - mostly like entersub */
2372 /* make sure we put something on the stack in scalar context */
2373 if (GIMME_V == G_SCALAR)
2374 {
2375 dSP;
2376 SV **bot = PL_stack_base + checkmark;
2377
2378 if (sp == bot) /* too few, push undef */
2379 bot [1] = &PL_sv_undef;
2380 else if (sp != bot + 1) /* too many, take last one */
2381 bot [1] = *sp;
2382
2383 SP = bot + 1;
2384
2385 PUTBACK;
2386 }
2387
2388 return NORMAL;
2389}
2390
2391static void
2392api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2393{
2394 int i;
2395 SV **arg = PL_stack_base + ax;
2396 int items = PL_stack_sp - arg + 1;
2397
2398 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2399
2400 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2401 && PL_op->op_ppaddr != pp_slf)
2402 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2403
2404 CvFLAGS (cv) |= CVf_SLF;
2405 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2406 slf_cv = cv;
2407
2408 /* we patch the op, and then re-run the whole call */
2409 /* we have to put the same argument on the stack for this to work */
2410 /* and this will be done by pp_restore */
2411 slf_restore.op_next = (OP *)&slf_restore;
2412 slf_restore.op_type = OP_CUSTOM;
2413 slf_restore.op_ppaddr = pp_restore;
2414 slf_restore.op_first = PL_op;
2415
2416 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2417
2418 if (PL_op->op_flags & OPf_STACKED)
2419 {
2420 if (items > slf_arga)
2421 {
2422 slf_arga = items;
2423 free (slf_argv);
2424 slf_argv = malloc (slf_arga * sizeof (SV *));
2425 }
2426
2427 slf_argc = items;
2428
2429 for (i = 0; i < items; ++i)
2430 slf_argv [i] = SvREFCNT_inc (arg [i]);
2431 }
2432 else
2433 slf_argc = 0;
2434
2435 PL_op->op_ppaddr = pp_slf;
2436 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2437
2438 PL_op = (OP *)&slf_restore;
2439}
2440
2441/*****************************************************************************/
2442/* dynamic wind */
2443
2444static void
2445on_enterleave_call (pTHX_ SV *cb)
2446{
2447 dSP;
2448
2449 PUSHSTACK;
2450
2451 PUSHMARK (SP);
2452 PUTBACK;
2453 call_sv (cb, G_VOID | G_DISCARD);
2454 SPAGAIN;
2455
2456 POPSTACK;
2457}
2458
2459static SV *
2460coro_avp_pop_and_free (pTHX_ AV **avp)
2461{
2462 AV *av = *avp;
2463 SV *res = av_pop (av);
2464
2465 if (AvFILLp (av) < 0)
2466 {
2467 *avp = 0;
2468 SvREFCNT_dec (av);
2469 }
2470
2471 return res;
2472}
2473
2474static void
2475coro_pop_on_enter (pTHX_ void *coro)
2476{
2477 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2478 SvREFCNT_dec (cb);
2479}
2480
2481static void
2482coro_pop_on_leave (pTHX_ void *coro)
2483{
2484 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2485 on_enterleave_call (aTHX_ sv_2mortal (cb));
1692} 2486}
1693 2487
1694/*****************************************************************************/ 2488/*****************************************************************************/
1695/* PerlIO::cede */ 2489/* PerlIO::cede */
1696 2490
… …
1765 PerlIOBuf_get_cnt, 2559 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2560 PerlIOBuf_set_ptrcnt,
1767}; 2561};
1768 2562
1769/*****************************************************************************/ 2563/*****************************************************************************/
2564/* Coro::Semaphore & Coro::Signal */
1770 2565
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2566static SV *
1782pp_restore (pTHX) 2567coro_waitarray_new (pTHX_ int count)
1783{ 2568{
1784 SV **SP = PL_stack_base + slf_ax; 2569 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2570 AV *av = newAV ();
2571 SV **ary;
1785 2572
1786 PUSHMARK (SP); 2573 /* unfortunately, building manually saves memory */
1787 2574 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 2575 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2576#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2577 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 2578#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 2579 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 2580 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 2581 SvPVX ((SV *)av) = (char *)ary;
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
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 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif 2582#endif
2583 AvMAX (av) = 1;
2584 AvFILLp (av) = 0;
2585 ary [0] = newSViv (count);
1978 2586
1979 CvFLAGS (cv) |= CVf_SLF; 2587 return newRV_noinc ((SV *)av);
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000} 2588}
2001 2589
2002/*****************************************************************************/ 2590/* semaphore */
2003 2591
2004static void 2592static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2593coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2594{
2007 SV *count_sv = AvARRAY (av)[0]; 2595 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2607 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2608 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2609 cb = av_shift (av);
2022 2610
2023 if (SvOBJECT (cb)) 2611 if (SvOBJECT (cb))
2612 {
2024 api_ready (aTHX_ cb); 2613 api_ready (aTHX_ cb);
2025 else 2614 --count;
2026 croak ("callbacks not yet supported"); 2615 }
2616 else if (SvTYPE (cb) == SVt_PVCV)
2617 {
2618 dSP;
2619 PUSHMARK (SP);
2620 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2621 PUTBACK;
2622 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2623 }
2027 2624
2028 SvREFCNT_dec (cb); 2625 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2626 }
2032} 2627}
2033 2628
2034static void 2629static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2630coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2632 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2633 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2634}
2040 2635
2041static int 2636static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2637slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2638{
2044 AV *av = (AV *)frame->data; 2639 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2640 SV *count_sv = AvARRAY (av)[0];
2046 2641
2642 /* if we are about to throw, don't actually acquire the lock, just throw */
2643 if (CORO_THROW)
2644 return 0;
2047 if (SvIVX (count_sv) > 0) 2645 else if (SvIVX (count_sv) > 0)
2048 { 2646 {
2049 SvSTATE_current->on_destroy = 0; 2647 SvSTATE_current->on_destroy = 0;
2648
2649 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2650 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2651 else
2652 coro_semaphore_adjust (aTHX_ av, 0);
2653
2051 return 0; 2654 return 0;
2052 } 2655 }
2053 else 2656 else
2054 { 2657 {
2055 int i; 2658 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2667 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2668 return 1;
2066 } 2669 }
2067} 2670}
2068 2671
2069static void 2672static int
2673slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2674{
2675 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2676}
2677
2678static int
2679slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2682}
2683
2684static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2685slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2686{
2072 AV *av = (AV *)SvRV (arg [0]); 2687 AV *av = (AV *)SvRV (arg [0]);
2073 2688
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2689 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2690 {
2076 frame->data = (void *)av; 2691 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2692 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2693 }
2080 else 2694 else
2081 { 2695 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2696 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2697
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2698 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2699 frame->prepare = prepare_schedule;
2086 2700
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2701 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2702 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2703 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2704 }
2705}
2092 2706
2707static void
2708slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 2711 frame->check = slf_check_semaphore_down;
2712}
2094 2713
2714static void
2715slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 if (items >= 2)
2718 {
2719 /* callback form */
2720 AV *av = (AV *)SvRV (arg [0]);
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]) > 0)
2726 coro_semaphore_adjust (aTHX_ av, 0);
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2734 frame->check = slf_check_semaphore_wait;
2735 }
2736}
2737
2738/* signal */
2739
2740static void
2741coro_signal_wake (pTHX_ AV *av, int count)
2742{
2743 SvIVX (AvARRAY (av)[0]) = 0;
2744
2745 /* now signal count waiters */
2746 while (count > 0 && AvFILLp (av) > 0)
2747 {
2748 SV *cb;
2749
2750 /* swap first two elements so we can shift a waiter */
2751 cb = AvARRAY (av)[0];
2752 AvARRAY (av)[0] = AvARRAY (av)[1];
2753 AvARRAY (av)[1] = cb;
2754
2755 cb = av_shift (av);
2756
2757 if (SvTYPE (cb) == SVt_PVCV)
2758 {
2759 dSP;
2760 PUSHMARK (SP);
2761 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2762 PUTBACK;
2763 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2764 }
2765 else
2766 {
2767 api_ready (aTHX_ cb);
2768 sv_setiv (cb, 0); /* signal waiter */
2769 }
2770
2771 SvREFCNT_dec (cb);
2772
2773 --count;
2774 }
2775}
2776
2777static int
2778slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2779{
2780 /* if we are about to throw, also stop waiting */
2781 return SvROK ((SV *)frame->data) && !CORO_THROW;
2782}
2783
2784static void
2785slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2786{
2787 AV *av = (AV *)SvRV (arg [0]);
2788
2789 if (items >= 2)
2790 {
2791 SV *cb_cv = s_get_cv_croak (arg [1]);
2792 av_push (av, SvREFCNT_inc_NN (cb_cv));
2793
2794 if (SvIVX (AvARRAY (av)[0]))
2795 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2796
2797 frame->prepare = prepare_nop;
2798 frame->check = slf_check_nop;
2799 }
2800 else if (SvIVX (AvARRAY (av)[0]))
2801 {
2802 SvIVX (AvARRAY (av)[0]) = 0;
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else
2807 {
2808 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2809
2810 av_push (av, waiter);
2811
2812 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2813 frame->prepare = prepare_schedule;
2814 frame->check = slf_check_signal_wait;
2815 }
2095} 2816}
2096 2817
2097/*****************************************************************************/ 2818/*****************************************************************************/
2819/* Coro::AIO */
2098 2820
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2821#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2822
2101/* create a closure from XS, returns a code reference */ 2823/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2824struct io_state
2103/* the callback must use dXSARGS/XSRETURN */ 2825{
2826 int errorno;
2827 I32 laststype; /* U16 in 5.10.0 */
2828 int laststatval;
2829 Stat_t statcache;
2830};
2831
2832static void
2833coro_aio_callback (pTHX_ CV *cv)
2834{
2835 dXSARGS;
2836 AV *state = (AV *)S_GENSUB_ARG;
2837 SV *coro = av_pop (state);
2838 SV *data_sv = newSV (sizeof (struct io_state));
2839
2840 av_extend (state, items - 1);
2841
2842 sv_upgrade (data_sv, SVt_PV);
2843 SvCUR_set (data_sv, sizeof (struct io_state));
2844 SvPOK_only (data_sv);
2845
2846 {
2847 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2848
2849 data->errorno = errno;
2850 data->laststype = PL_laststype;
2851 data->laststatval = PL_laststatval;
2852 data->statcache = PL_statcache;
2853 }
2854
2855 /* now build the result vector out of all the parameters and the data_sv */
2856 {
2857 int i;
2858
2859 for (i = 0; i < items; ++i)
2860 av_push (state, SvREFCNT_inc_NN (ST (i)));
2861 }
2862
2863 av_push (state, data_sv);
2864
2865 api_ready (aTHX_ coro);
2866 SvREFCNT_dec (coro);
2867 SvREFCNT_dec ((AV *)state);
2868}
2869
2870static int
2871slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2872{
2873 AV *state = (AV *)frame->data;
2874
2875 /* if we are about to throw, return early */
2876 /* this does not cancel the aio request, but at least */
2877 /* it quickly returns */
2878 if (CORO_THROW)
2879 return 0;
2880
2881 /* one element that is an RV? repeat! */
2882 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2883 return 1;
2884
2885 /* restore status */
2886 {
2887 SV *data_sv = av_pop (state);
2888 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2889
2890 errno = data->errorno;
2891 PL_laststype = data->laststype;
2892 PL_laststatval = data->laststatval;
2893 PL_statcache = data->statcache;
2894
2895 SvREFCNT_dec (data_sv);
2896 }
2897
2898 /* push result values */
2899 {
2900 dSP;
2901 int i;
2902
2903 EXTEND (SP, AvFILLp (state) + 1);
2904 for (i = 0; i <= AvFILLp (state); ++i)
2905 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2906
2907 PUTBACK;
2908 }
2909
2910 return 0;
2911}
2912
2913static void
2914slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2915{
2916 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2917 SV *coro_hv = SvRV (coro_current);
2918 struct coro *coro = SvSTATE_hv (coro_hv);
2919
2920 /* put our coroutine id on the state arg */
2921 av_push (state, SvREFCNT_inc_NN (coro_hv));
2922
2923 /* first see whether we have a non-zero priority and set it as AIO prio */
2924 if (coro->prio)
2925 {
2926 dSP;
2927
2928 static SV *prio_cv;
2929 static SV *prio_sv;
2930
2931 if (expect_false (!prio_cv))
2932 {
2933 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2934 prio_sv = newSViv (0);
2935 }
2936
2937 PUSHMARK (SP);
2938 sv_setiv (prio_sv, coro->prio);
2939 XPUSHs (prio_sv);
2940
2941 PUTBACK;
2942 call_sv (prio_cv, G_VOID | G_DISCARD);
2943 }
2944
2945 /* now call the original request */
2946 {
2947 dSP;
2948 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2949 int i;
2950
2951 PUSHMARK (SP);
2952
2953 /* first push all args to the stack */
2954 EXTEND (SP, items + 1);
2955
2956 for (i = 0; i < items; ++i)
2957 PUSHs (arg [i]);
2958
2959 /* now push the callback closure */
2960 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2961
2962 /* now call the AIO function - we assume our request is uncancelable */
2963 PUTBACK;
2964 call_sv ((SV *)req, G_VOID | G_DISCARD);
2965 }
2966
2967 /* now that the requets is going, we loop toll we have a result */
2968 frame->data = (void *)state;
2969 frame->prepare = prepare_schedule;
2970 frame->check = slf_check_aio_req;
2971}
2972
2973static void
2974coro_aio_req_xs (pTHX_ CV *cv)
2975{
2976 dXSARGS;
2977
2978 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2979
2980 XSRETURN_EMPTY;
2981}
2982
2983/*****************************************************************************/
2984
2985#if CORO_CLONE
2986# include "clone.c"
2987#endif
2988
2989/*****************************************************************************/
2990
2104static SV * 2991static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 2992coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2106{ 2993{
2107 CV *cv = (CV *)NEWSV (0, 0); 2994 SV *coro_sv;
2995 struct coro *coro;
2996 MAGIC *mg;
2997 HV *hv;
2998 SV *cb;
2999 int i;
2108 3000
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3001 if (argc > 0)
3002 {
3003 cb = s_get_cv_croak (argv [0]);
2110 3004
2111 CvANON_on (cv); 3005 if (!is_coro)
2112 CvISXSUB_on (cv); 3006 {
2113 CvXSUB (cv) = xsub; 3007 if (CvISXSUB (cb))
2114 GENSUB_ARG = arg; 3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2115 3009
2116 return newRV_noinc ((SV *)cv); 3010 if (!CvROOT (cb))
2117} 3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
2118 3014
2119/*****************************************************************************/ 3015 Newz (0, coro, 1, struct coro);
3016 coro->args = newAV ();
3017 coro->flags = CF_NEW;
3018
3019 if (coro_first) coro_first->prev = coro;
3020 coro->next = coro_first;
3021 coro_first = coro;
3022
3023 coro->hv = hv = newHV ();
3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025 mg->mg_flags |= MGf_DUP;
3026 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3027
3028 if (argc > 0)
3029 {
3030 av_extend (coro->args, argc + is_coro - 1);
3031
3032 if (is_coro)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = (SV *)cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040 for (i = 1; i < argc; i++)
3041 av_push (coro->args, newSVsv (argv [i]));
3042 }
3043
3044 return coro_sv;
3045}
2120 3046
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3047MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 3048
2123PROTOTYPES: DISABLE 3049PROTOTYPES: DISABLE
2124 3050
… …
2129 coro_thx = PERL_GET_CONTEXT; 3055 coro_thx = PERL_GET_CONTEXT;
2130# endif 3056# endif
2131#endif 3057#endif
2132 BOOT_PAGESIZE; 3058 BOOT_PAGESIZE;
2133 3059
3060 cctx_current = cctx_new_empty ();
3061
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3062 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3063 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 3064
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3065 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3066 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2157 3085
2158 { 3086 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3087 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 3088
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3089 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 3090 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 3091
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3092 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 3093 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 3094 }
2169 3095
2170 coroapi.ver = CORO_API_VERSION; 3096 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 3097 coroapi.rev = CORO_API_REVISION;
2172 3098
… …
2184 3110
2185 if (!svp) croak ("Time::HiRes is required"); 3111 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3112 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187 3113
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3114 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3115
3116 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3117 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2189 } 3118 }
2190 3119
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3120 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2192} 3121}
2193 3122
2194SV * 3123SV *
2195new (char *klass, ...) 3124new (SV *klass, ...)
3125 ALIAS:
3126 Coro::new = 1
2196 CODE: 3127 CODE:
2197{ 3128 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2198 struct coro *coro; 3129 OUTPUT:
2199 MAGIC *mg;
2200 HV *hv;
2201 int i;
2202
2203 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV ();
2205 coro->flags = CF_NEW;
2206
2207 if (coro_first) coro_first->prev = coro;
2208 coro->next = coro_first;
2209 coro_first = coro;
2210
2211 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215
2216 av_extend (coro->args, items - 1);
2217 for (i = 1; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i)));
2219}
2220 OUTPUT:
2221 RETVAL 3130 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 3131
2228void 3132void
2229transfer (...) 3133transfer (...)
2230 PROTOTYPE: $$ 3134 PROTOTYPE: $$
2231 CODE: 3135 CODE:
… …
2241void 3145void
2242_exit (int code) 3146_exit (int code)
2243 PROTOTYPE: $ 3147 PROTOTYPE: $
2244 CODE: 3148 CODE:
2245 _exit (code); 3149 _exit (code);
3150
3151SV *
3152clone (Coro::State coro)
3153 CODE:
3154{
3155#if CORO_CLONE
3156 struct coro *ncoro = coro_clone (aTHX_ coro);
3157 MAGIC *mg;
3158 /* TODO: too much duplication */
3159 ncoro->hv = newHV ();
3160 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3161 mg->mg_flags |= MGf_DUP;
3162 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3163#else
3164 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3165#endif
3166}
3167 OUTPUT:
3168 RETVAL
2246 3169
2247int 3170int
2248cctx_stacksize (int new_stacksize = 0) 3171cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 3172 PROTOTYPE: ;$
2250 CODE: 3173 CODE:
… …
2300 eval = 1 3223 eval = 1
2301 CODE: 3224 CODE:
2302{ 3225{
2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3226 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2304 { 3227 {
2305 struct coro temp; 3228 struct coro *current = SvSTATE_current;
2306 3229
2307 if (!(coro->flags & CF_RUNNING)) 3230 if (current != coro)
2308 { 3231 {
2309 PUTBACK; 3232 PUTBACK;
2310 save_perl (aTHX_ &temp); 3233 save_perl (aTHX_ current);
2311 load_perl (aTHX_ coro); 3234 load_perl (aTHX_ coro);
3235 SPAGAIN;
2312 } 3236 }
2313 3237
2314 {
2315 dSP;
2316 ENTER;
2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK; 3238 PUSHSTACK;
3239
2320 PUSHMARK (SP); 3240 PUSHMARK (SP);
3241 PUTBACK;
2321 3242
2322 if (ix) 3243 if (ix)
2323 eval_sv (coderef, 0); 3244 eval_sv (coderef, 0);
2324 else 3245 else
2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3246 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 3247
2327 POPSTACK; 3248 POPSTACK;
2328 SPAGAIN; 3249 SPAGAIN;
2329 FREETMPS;
2330 LEAVE;
2331 PUTBACK;
2332 }
2333 3250
2334 if (!(coro->flags & CF_RUNNING)) 3251 if (current != coro)
2335 { 3252 {
3253 PUTBACK;
2336 save_perl (aTHX_ coro); 3254 save_perl (aTHX_ coro);
2337 load_perl (aTHX_ &temp); 3255 load_perl (aTHX_ current);
2338 SPAGAIN; 3256 SPAGAIN;
2339 } 3257 }
2340 } 3258 }
2341} 3259}
2342 3260
… …
2346 ALIAS: 3264 ALIAS:
2347 is_ready = CF_READY 3265 is_ready = CF_READY
2348 is_running = CF_RUNNING 3266 is_running = CF_RUNNING
2349 is_new = CF_NEW 3267 is_new = CF_NEW
2350 is_destroyed = CF_DESTROYED 3268 is_destroyed = CF_DESTROYED
3269 is_suspended = CF_SUSPENDED
2351 CODE: 3270 CODE:
2352 RETVAL = boolSV (coro->flags & ix); 3271 RETVAL = boolSV (coro->flags & ix);
2353 OUTPUT: 3272 OUTPUT:
2354 RETVAL 3273 RETVAL
2355 3274
2356void 3275void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3276throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3277 PROTOTYPE: $;$
2359 CODE: 3278 CODE:
3279{
3280 struct coro *current = SvSTATE_current;
3281 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3282 SvREFCNT_dec (*throwp);
3283 SvGETMAGIC (throw);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3284 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3285}
2362 3286
2363void 3287void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3288api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3289 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3290 C_ARGS: aTHX_ coro, flags
2367 3291
2368SV * 3292SV *
2369has_cctx (Coro::State coro) 3293has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3294 PROTOTYPE: $
2371 CODE: 3295 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3296 /* maybe manage the running flag differently */
3297 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3298 OUTPUT:
2374 RETVAL 3299 RETVAL
2375 3300
2376int 3301int
2377is_traced (Coro::State coro) 3302is_traced (Coro::State coro)
… …
2397 3322
2398void 3323void
2399force_cctx () 3324force_cctx ()
2400 PROTOTYPE: 3325 PROTOTYPE:
2401 CODE: 3326 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3327 cctx_current->idle_sp = 0;
2403 3328
2404void 3329void
2405swap_defsv (Coro::State self) 3330swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3331 PROTOTYPE: $
2407 ALIAS: 3332 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3340 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3341
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3342 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3343 }
2419 3344
3345void
3346cancel (Coro::State self)
3347 CODE:
3348 coro_state_destroy (aTHX_ self);
3349 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3350
3351
3352SV *
3353enable_times (int enabled = enable_times)
3354 CODE:
3355{
3356 RETVAL = boolSV (enable_times);
3357
3358 if (enabled != enable_times)
3359 {
3360 enable_times = enabled;
3361
3362 coro_times_update ();
3363 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3364 }
3365}
3366 OUTPUT:
3367 RETVAL
3368
3369void
3370times (Coro::State self)
3371 PPCODE:
3372{
3373 struct coro *current = SvSTATE (coro_current);
3374
3375 if (expect_false (current == self))
3376 {
3377 coro_times_update ();
3378 coro_times_add (SvSTATE (coro_current));
3379 }
3380
3381 EXTEND (SP, 2);
3382 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3383 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3384
3385 if (expect_false (current == self))
3386 coro_times_sub (SvSTATE (coro_current));
3387}
3388
3389void
3390swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3391 CODE:
3392{
3393 struct coro *current = SvSTATE_current;
3394
3395 if (current == coro)
3396 SWAP_SVS (current);
3397
3398 if (!coro->swap_sv)
3399 coro->swap_sv = newAV ();
3400
3401 av_push (coro->swap_sv, SvREFCNT_inc_NN (sv));
3402 av_push (coro->swap_sv, SvREFCNT_inc_NN (swapsv));
3403
3404 if (current == coro)
3405 SWAP_SVS (current);
3406}
3407
3408
2420MODULE = Coro::State PACKAGE = Coro 3409MODULE = Coro::State PACKAGE = Coro
2421 3410
2422BOOT: 3411BOOT:
2423{ 3412{
2424 int i;
2425
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3413 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3414 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3415 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3416 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3417 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3418 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3419 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3420 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3421 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2432 3422
3423 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3424 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3425 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3426 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3427
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3428 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3429
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2437 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2438 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2439 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2440 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2441
2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2443 coro_ready[i] = newAV ();
2444 3436
2445 { 3437 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3438 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3439
2448 coroapi.schedule = api_schedule; 3440 coroapi.schedule = api_schedule;
3441 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3442 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3443 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3444 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3445 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3446 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3447 coroapi.current = coro_current;
2455 3448
2456 GCoroAPI = &coroapi; 3449 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3450 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3451 SvREADONLY_on (sv);
2459 } 3452 }
2460} 3453}
3454
3455SV *
3456async (...)
3457 PROTOTYPE: &@
3458 CODE:
3459 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3460 api_ready (aTHX_ RETVAL);
3461 OUTPUT:
3462 RETVAL
3463
3464void
3465terminate (...)
3466 CODE:
3467 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2461 3468
2462void 3469void
2463schedule (...) 3470schedule (...)
2464 CODE: 3471 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3473
3474void
3475schedule_to (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3478
3479void
3480cede_to (...)
3481 CODE:
3482 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2466 3483
2467void 3484void
2468cede (...) 3485cede (...)
2469 CODE: 3486 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3487 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2484void 3501void
2485_set_readyhook (SV *hook) 3502_set_readyhook (SV *hook)
2486 PROTOTYPE: $ 3503 PROTOTYPE: $
2487 CODE: 3504 CODE:
2488 SvREFCNT_dec (coro_readyhook); 3505 SvREFCNT_dec (coro_readyhook);
3506 SvGETMAGIC (hook);
3507 if (SvOK (hook))
3508 {
2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3509 coro_readyhook = newSVsv (hook);
3510 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3511 }
3512 else
3513 {
3514 coro_readyhook = 0;
3515 CORO_READYHOOK = 0;
3516 }
2490 3517
2491int 3518int
2492prio (Coro::State coro, int newprio = 0) 3519prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$ 3520 PROTOTYPE: $;$
2494 ALIAS: 3521 ALIAS:
… …
2500 if (items > 1) 3527 if (items > 1)
2501 { 3528 {
2502 if (ix) 3529 if (ix)
2503 newprio = coro->prio - newprio; 3530 newprio = coro->prio - newprio;
2504 3531
2505 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3532 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2506 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3533 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2507 3534
2508 coro->prio = newprio; 3535 coro->prio = newprio;
2509 } 3536 }
2510} 3537}
2511 OUTPUT: 3538 OUTPUT:
… …
2525 CODE: 3552 CODE:
2526 RETVAL = coro_nready; 3553 RETVAL = coro_nready;
2527 OUTPUT: 3554 OUTPUT:
2528 RETVAL 3555 RETVAL
2529 3556
2530# for async_pool speedup
2531void 3557void
2532_pool_1 (SV *cb) 3558suspend (Coro::State self)
3559 PROTOTYPE: $
2533 CODE: 3560 CODE:
2534{ 3561 self->flags |= CF_SUSPENDED;
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541 3562
2542 if (!invoke) 3563void
3564resume (Coro::State self)
3565 PROTOTYPE: $
3566 CODE:
3567 self->flags &= ~CF_SUSPENDED;
3568
3569void
3570_pool_handler (...)
3571 CODE:
3572 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3573
3574void
3575async_pool (SV *cv, ...)
3576 PROTOTYPE: &@
3577 PPCODE:
3578{
3579 HV *hv = (HV *)av_pop (av_async_pool);
3580 AV *av = newAV ();
3581 SV *cb = ST (0);
3582 int i;
3583
3584 av_extend (av, items - 2);
3585 for (i = 1; i < items; ++i)
3586 av_push (av, SvREFCNT_inc_NN (ST (i)));
3587
3588 if ((SV *)hv == &PL_sv_undef)
2543 { 3589 {
2544 SV *old = PL_diehook; 3590 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2545 PL_diehook = 0; 3591 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2546 SvREFCNT_dec (old); 3592 SvREFCNT_dec (sv);
2547 croak ("\3async_pool terminate\2\n");
2548 } 3593 }
2549 3594
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 { 3595 {
2563 av_fill (defav, len - 1); 3596 struct coro *coro = SvSTATE_hv (hv);
2564 for (i = 0; i < len; ++i) 3597
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3598 assert (!coro->invoke_cb);
3599 assert (!coro->invoke_av);
3600 coro->invoke_cb = SvREFCNT_inc (cb);
3601 coro->invoke_av = av;
2566 } 3602 }
3603
3604 api_ready (aTHX_ (SV *)hv);
3605
3606 if (GIMME_V != G_VOID)
3607 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3608 else
3609 SvREFCNT_dec (hv);
2567} 3610}
3611
3612SV *
3613rouse_cb ()
3614 PROTOTYPE:
3615 CODE:
3616 RETVAL = coro_new_rouse_cb (aTHX);
3617 OUTPUT:
3618 RETVAL
2568 3619
2569void 3620void
2570_pool_2 (SV *cb) 3621rouse_wait (...)
3622 PROTOTYPE: ;$
3623 PPCODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3625
3626void
3627on_enter (SV *block)
3628 ALIAS:
3629 on_leave = 1
3630 PROTOTYPE: &
2571 CODE: 3631 CODE:
2572{ 3632{
2573 struct coro *coro = SvSTATE_current; 3633 struct coro *coro = SvSTATE_current;
3634 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2574 3635
2575 sv_setsv (cb, &PL_sv_undef); 3636 block = s_get_cv_croak (block);
2576 3637
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3638 if (!*avp)
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $
2607 PPCODE:
2608{
2609 AV *defav = GvAV (PL_defgv);
2610 AV *av = newAV (); 3639 *avp = newAV ();
2611 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 3640
2617 data->errorno = errno; 3641 av_push (*avp, SvREFCNT_inc (block));
2618 data->laststype = PL_laststype;
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621 3642
2622 av_extend (av, AvFILLp (defav) + 1 + 1); 3643 if (!ix)
3644 on_enterleave_call (aTHX_ block);
2623 3645
2624 for (i = 0; i <= AvFILLp (defav); ++i) 3646 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3647 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2626 3648 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 {
2674 PUSHMARK (SP);
2675 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2677 SPAGAIN;
2678 }
2679
2680 --incede;
2681} 3649}
2682 3650
2683 3651
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3652MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3653
2686BOOT: 3654BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3655 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3656
3657
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3658MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3659
2691SV * 3660SV *
2692new (SV *klass, SV *count_ = 0) 3661new (SV *klass, SV *count = 0)
2693 CODE: 3662 CODE:
2694{ 3663{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3664 int semcnt = 1;
2696 AV *av = newAV (); 3665
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3666 if (count)
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3667 {
3668 SvGETMAGIC (count);
3669
3670 if (SvOK (count))
3671 semcnt = SvIV (count);
3672 }
3673
3674 RETVAL = sv_bless (
3675 coro_waitarray_new (aTHX_ semcnt),
3676 GvSTASH (CvGV (cv))
3677 );
2699} 3678}
3679 OUTPUT:
3680 RETVAL
3681
3682# helper for Coro::Channel and others
3683SV *
3684_alloc (int count)
3685 CODE:
3686 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3687 OUTPUT:
2701 RETVAL 3688 RETVAL
2702 3689
2703SV * 3690SV *
2704count (SV *self) 3691count (SV *self)
… …
2713 adjust = 1 3700 adjust = 1
2714 CODE: 3701 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3703
2717void 3704void
2718down (SV *self) 3705down (...)
2719 CODE: 3706 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3707 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3708
3709void
3710wait (...)
3711 CODE:
3712 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3713
2722void 3714void
2723try (SV *self) 3715try (SV *self)
2724 PPCODE: 3716 PPCODE:
2725{ 3717{
… …
2737 XSRETURN_NO; 3729 XSRETURN_NO;
2738} 3730}
2739 3731
2740void 3732void
2741waiters (SV *self) 3733waiters (SV *self)
2742 CODE: 3734 PPCODE:
2743{ 3735{
2744 AV *av = (AV *)SvRV (self); 3736 AV *av = (AV *)SvRV (self);
3737 int wcount = AvFILLp (av) + 1 - 1;
2745 3738
2746 if (GIMME_V == G_SCALAR) 3739 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3740 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3741 else
2749 { 3742 {
2750 int i; 3743 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3744 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3745 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3746 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3747 }
2755} 3748}
2756 3749
3750MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3751
3752void
3753_may_delete (SV *sem, int count, int extra_refs)
3754 PPCODE:
3755{
3756 AV *av = (AV *)SvRV (sem);
3757
3758 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3759 && AvFILLp (av) == 0 /* no waiters, just count */
3760 && SvIV (AvARRAY (av)[0]) == count)
3761 XSRETURN_YES;
3762
3763 XSRETURN_NO;
3764}
3765
3766MODULE = Coro::State PACKAGE = Coro::Signal
3767
3768SV *
3769new (SV *klass)
3770 CODE:
3771 RETVAL = sv_bless (
3772 coro_waitarray_new (aTHX_ 0),
3773 GvSTASH (CvGV (cv))
3774 );
3775 OUTPUT:
3776 RETVAL
3777
3778void
3779wait (...)
3780 CODE:
3781 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3782
3783void
3784broadcast (SV *self)
3785 CODE:
3786{
3787 AV *av = (AV *)SvRV (self);
3788 coro_signal_wake (aTHX_ av, AvFILLp (av));
3789}
3790
3791void
3792send (SV *self)
3793 CODE:
3794{
3795 AV *av = (AV *)SvRV (self);
3796
3797 if (AvFILLp (av))
3798 coro_signal_wake (aTHX_ av, 1);
3799 else
3800 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3801}
3802
3803IV
3804awaited (SV *self)
3805 CODE:
3806 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3807 OUTPUT:
3808 RETVAL
3809
3810
3811MODULE = Coro::State PACKAGE = Coro::AnyEvent
3812
3813BOOT:
3814 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3815
3816void
3817_schedule (...)
3818 CODE:
3819{
3820 static int incede;
3821
3822 api_cede_notself (aTHX);
3823
3824 ++incede;
3825 while (coro_nready >= incede && api_cede (aTHX))
3826 ;
3827
3828 sv_setsv (sv_activity, &PL_sv_undef);
3829 if (coro_nready >= incede)
3830 {
3831 PUSHMARK (SP);
3832 PUTBACK;
3833 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3834 }
3835
3836 --incede;
3837}
3838
3839
3840MODULE = Coro::State PACKAGE = Coro::AIO
3841
3842void
3843_register (char *target, char *proto, SV *req)
3844 CODE:
3845{
3846 SV *req_cv = s_get_cv_croak (req);
3847 /* newXSproto doesn't return the CV on 5.8 */
3848 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3849 sv_setpv ((SV *)slf_cv, proto);
3850 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3851}
3852
3853MODULE = Coro::State PACKAGE = Coro::Select
3854
3855void
3856patch_pp_sselect ()
3857 CODE:
3858 if (!coro_old_pp_sselect)
3859 {
3860 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3861 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3862 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3863 }
3864
3865void
3866unpatch_pp_sselect ()
3867 CODE:
3868 if (coro_old_pp_sselect)
3869 {
3870 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3871 coro_old_pp_sselect = 0;
3872 }
3873
3874

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