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Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs.
Revision 1.367 by root, Mon Aug 3 09:19:57 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
51#endif 51#endif
52 52
53/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
108#endif 58#endif
109 59
110#ifndef CORO_STACKGUARD 60#ifndef CORO_STACKGUARD
… …
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128 80
129#if __GNUC__ >= 3 81#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 84# define INLINE static inline
133#else 85#else
134# define attribute(x) 86# define attribute(x)
135# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
136# define INLINE static 88# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
141 93
142#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
143 95
144#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
145 98
146#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
147# if CORO_PTHREAD 100# if CORO_PTHREAD
148static void *coro_thx; 101static void *coro_thx;
149# endif 102# endif
150#endif 103#endif
151 104
152/* helper storage struct for Coro::AIO */ 105#ifdef __linux
153struct io_state 106# include <time.h> /* for timespec */
154{ 107# include <syscall.h> /* for SYS_* */
155 AV *res; 108# ifdef SYS_clock_gettime
156 int errorno; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 110# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 112# endif
160}; 113#endif
161 114
162static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
163 121
164static U32 cctx_gen; 122static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 126static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
172 133
173static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 136static SV *rv_diehook;
176static SV *rv_warnhook; 137static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
178 139
179/* async_pool helper stuff */ 140/* async_pool helper stuff */
180static SV *sv_pool_rss; 141static SV *sv_pool_rss;
181static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
183 148
184/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
185static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
186 157
187static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
189 160
190enum { 161enum {
… …
216 int valgrind_id; 187 int valgrind_id;
217#endif 188#endif
218 unsigned char flags; 189 unsigned char flags;
219} coro_cctx; 190} coro_cctx;
220 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
221enum { 196enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
226}; 202};
227 203
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 205typedef struct
230{ 206{
231 SV *defsv; 207 SV *defsv;
232 AV *defav; 208 AV *defav;
233 SV *errsv; 209 SV *errsv;
234 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
235#define VAR(name,type) type name; 212#define VAR(name,type) type name;
236# include "state.h" 213# include "state.h"
237#undef VAR 214#undef VAR
238} perl_slots; 215} perl_slots;
239 216
… …
242/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
243struct coro { 220struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 222 coro_cctx *cctx;
246 223
247 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 228 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 229 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
251 231
232 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 237 void (*on_destroy)(pTHX_ struct coro *coro);
257 238
258 /* statistics */ 239 /* statistics */
259 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
260 241
261 /* coro process data */ 242 /* coro process data */
262 int prio; 243 int prio;
263 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
264 246
265 /* async_pool */ 247 /* async_pool */
266 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
267 258
268 /* linked list */ 259 /* linked list */
269 struct coro *next, *prev; 260 struct coro *next, *prev;
270}; 261};
271 262
272typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
274 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 269static struct CoroSLF slf_frame; /* the current slf frame */
276 270
277/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
278 272
279#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
285 279
286/* for Coro.pm */ 280/* for Coro.pm */
287static SV *coro_current; 281static SV *coro_current;
288static SV *coro_readyhook; 282static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 285static struct coro *coro_first;
291#define coro_nready coroapi.nready 286#define coro_nready coroapi.nready
287
288/** Coro::Select ************************************************************/
289
290static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select;
292
293/* horrible hack, but if it works... */
294static OP *
295coro_pp_sselect (aTHX)
296{
297 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select);
300 PUTBACK;
301
302 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
303 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX);
306}
292 307
293/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
294 309
295static SV * 310static SV *
296coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 335 get_hv (name, create);
321#endif 336#endif
322 return get_hv (name, create); 337 return get_hv (name, create);
323} 338}
324 339
340INLINE void
341coro_times_update ()
342{
343#ifdef coro_clock_gettime
344 struct timespec ts;
345
346 ts.tv_sec = ts.tv_nsec = 0;
347 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
348 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
349
350 ts.tv_sec = ts.tv_nsec = 0;
351 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
352 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
353#else
354 dTHX;
355 UV tv[2];
356
357 u2time (aTHX_ tv);
358 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000;
360#endif
361}
362
363INLINE void
364coro_times_add (struct coro *c)
365{
366 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0];
369
370 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0];
373}
374
375INLINE void
376coro_times_sub (struct coro *c)
377{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0];
381
382 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
383 c->t_cpu [1] -= time_cpu [1];
384 c->t_cpu [0] -= time_cpu [0];
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
325static AV * 439static AV *
326coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
327{ 441{
328 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
330 444
331 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 451#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 453 --AvFILLp (padlist);
340 454
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
343 457
344 return newpadlist; 458 return newpadlist;
345} 459}
346 460
347static void 461static void
348free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
349{ 463{
350 /* may be during global destruction */ 464 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
352 { 466 {
353 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
354 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
355 { 470 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
357 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 473 I32 j = AvFILLp (av);
359 SV *sv; 474
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 480 }
366 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
368 } 486 }
369} 487}
370 488
371static int 489static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 491{
374 AV *padlist; 492 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return 0;
376 498
377 /* casting is fun. */ 499 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
380 502
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 504
383 return 0; 505 return 0;
384} 506}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 507
389static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 509 0, 0, 0, 0,
391 coro_cv_free 510 coro_cv_free
392}; 511};
393
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 512
443/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
444static void 514static void
445get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
446{ 516{
… …
452 else 522 else
453 { 523 {
454#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
461#else 531#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 533#endif
464 } 534 }
465} 535}
466 536
467static void 537static void
… …
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
475 545
476 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
477 547
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
480 550
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 552}
483 553
484/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
485 558
486static void 559static void
487load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
488{ 561{
489 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
490 c->slot = 0; 563 c->slot = 0;
491 564
492 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
493 566
494 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
498 572
499 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 574 # include "state.h"
501 #undef VAR 575 #undef VAR
502 576
… …
514 } 588 }
515 589
516 PUTBACK; 590 PUTBACK;
517 } 591 }
518 592
519 slf_frame = c->slf_frame; 593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (enable_times))
597 {
598 if (expect_false (!times_valid))
599 coro_times_update ();
600
601 coro_times_sub (c);
602 }
603
604 if (expect_false (c->on_enter))
605 {
606 int i;
607
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 }
520} 611}
521 612
522static void 613static void
523save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
524{ 615{
616 if (expect_false (c->on_leave))
617 {
618 int i;
619
620 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 }
623
624 times_valid = 0;
625
626 if (expect_false (enable_times))
627 {
628 coro_times_update (); times_valid = 1;
629 coro_times_add (c);
630 }
631
632 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 633 c->slf_frame = slf_frame;
526 634
527 { 635 {
528 dSP; 636 dSP;
529 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
… …
541 { 649 {
542 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
543 { 651 {
544 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
545 653
546 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
547 { 655 {
548 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
549 657
550 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
551 { 659 {
… …
575 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
576 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
577 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
578 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
579 { 687 {
580 int i; 688 unsigned int i;
581 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
582 CXINC; 690 CXINC;
583 } 691 }
584 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
585 693
586 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
587 695
588 { 696 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 698
591 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
595 704
596 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 706 # include "state.h"
598 #undef VAR 707 #undef VAR
599 } 708 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
607 */ 716 */
608#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
610#else 719#else
611static void 720static void
612coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
613{ 722{
614 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 787 Safefree (PL_retstack);
679#endif 788#endif
680} 789}
681 790
791#define CORO_RSS \
792 rss += sizeof (SYM (curstackinfo)); \
793 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
794 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
795 rss += SYM (tmps_max) * sizeof (SV *); \
796 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
797 rss += SYM (scopestack_max) * sizeof (I32); \
798 rss += SYM (savestack_max) * sizeof (ANY);
799
682static size_t 800static size_t
683coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
684{ 802{
685 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
686 804
687 if (coro->mainstack) 805 if (coro->mainstack)
688 { 806 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
693 { 808 {
694 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
695 810 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 811 #undef SYM
699 } 812 }
700 else 813 else
701 slot = coro->slot;
702
703 if (slot)
704 { 814 {
705 rss += sizeof (slot->curstackinfo); 815 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 816 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 817 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 818 }
717 } 819 }
718 820
719 return rss; 821 return rss;
720} 822}
… …
733#endif 835#endif
734 836
735/* 837/*
736 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 839 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 840 * and instead of trying to save and restore the hash elements, we just provide
739 * readback here. 841 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 842 */
744static int 843static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 845{
747 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 900
802 if (svp) 901 if (svp)
803 { 902 {
804 SV *old = *svp; 903 SV *old = *svp;
805 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
807 return 0; 906 return 0;
808 } 907 }
809 } 908 }
810 909
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 921slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 922{
824 return 0; 923 return 0;
825} 924}
826 925
827static void 926static int
927slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{
929 return 1;
930}
931
932static UNOP coro_setup_op;
933
934static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
829{ 936{
830 /* 937 /*
831 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
832 */ 939 */
… …
834 941
835 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 949 PL_curpm = 0;
840 PL_curpad = 0; 950 PL_curpad = 0;
841 PL_localizing = 0; 951 PL_localizing = 0;
842 PL_dirty = 0; 952 PL_dirty = 0;
843 PL_restartop = 0; 953 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 955 PL_parser = 0;
846#endif 956#endif
957 PL_hints = 0;
847 958
848 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 960 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 962
852 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 970
859 { 971 {
860 dSP; 972 dSP;
861 UNOP myop; 973 UNOP myop;
862 974
863 Zero (&myop, 1, UNOP); 975 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
866 979
867 PUSHMARK (SP); 980 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 982 PUTBACK;
870 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 985 }
874 986
875 /* this newly created coroutine might be run on an existing cctx which most 987 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 989 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880}
881 992
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */
998
999 PL_op = (OP *)&coro_setup_op;
1000
1001 /* copy throw, in case it was set before coro_setup */
1002 CORO_THROW = coro->except;
1003
1004 if (expect_false (enable_times))
1005 {
1006 coro_times_update ();
1007 coro_times_sub (coro);
1008 }
1009}
1010
882static void 1011static void
883coro_destruct (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
884{ 1013{
885 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
886 { 1015 {
887 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
897 1026
898 /* unwind main stack */ 1027 /* unwind main stack */
899 dounwind (-1); 1028 dounwind (-1);
900 } 1029 }
1030}
901 1031
902 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
903 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
904 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
905 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
906 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv));
908 1036
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911 1037 {
1038 struct coro *current = SvSTATE_current;
1039
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041
1042 save_perl (aTHX_ current);
1043 load_perl (aTHX_ coro);
1044
1045 coro_unwind_stacks (aTHX);
1046 coro_destruct_stacks (aTHX);
1047
1048 // now save some sv's to be free'd later
1049 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs;
1054 svf [5] = GvSV (irsgv);
1055 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf));
1059
1060 load_perl (aTHX_ current);
1061 }
1062
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1067 SvREFCNT_dec (svf [i]);
1068
912 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
914 1071 SvREFCNT_dec (coro->invoke_cb);
915 coro_destruct_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
916} 1074}
917 1075
918INLINE void 1076INLINE void
919free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
920{ 1078{
… …
928static int 1086static int
929runops_trace (pTHX) 1087runops_trace (pTHX)
930{ 1088{
931 COP *oldcop = 0; 1089 COP *oldcop = 0;
932 int oldcxix = -2; 1090 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1091
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1093 {
938 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
939 1095
940 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1097 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1098 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1099 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1101 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
947 SV **cb; 1103 SV **cb;
… …
984 1140
985 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
986 { 1142 {
987 SV **cb; 1143 SV **cb;
988 1144
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1146 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1148
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1150 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1151 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
999 1154
1000 if (isGV (gv)) 1155 if (isGV (gv))
… …
1005 SAVETMPS; 1160 SAVETMPS;
1006 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1162 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1164 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1165 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1166 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1167 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1168 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1169 SPAGAIN;
1015 FREETMPS; 1170 FREETMPS;
… …
1018 } 1173 }
1019 1174
1020 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
1021 } 1176 }
1022 1177
1023 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1179 {
1025 dSP; 1180 dSP;
1026 1181
1027 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1183 ENTER;
… …
1047 1202
1048 TAINT_NOT; 1203 TAINT_NOT;
1049 return 0; 1204 return 0;
1050} 1205}
1051 1206
1207static struct CoroSLF cctx_ssl_frame;
1208
1052static void 1209static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1211{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1212 ta->prev = 0;
1057} 1213}
1058 1214
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1215static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1217{
1062/* also initialises PL_top_env */ 1218 *frame = cctx_ssl_frame;
1219
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221}
1222
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1224static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1065{ 1226{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1070 1228
1071 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1073 1231
1074 Zero (&myop, 1, UNOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1234 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1235 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1236
1078 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1239
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1242}
1087 1243
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1245INLINE void
1090transfer_tail (pTHX) 1246transfer_tail (pTHX)
1091{ 1247{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1248 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106} 1249}
1107 1250
1108/* 1251/*
1109 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1253 */
… …
1122 /* normally we would need to skip the entersub here */ 1265 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1266 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1267 /* PL_nop = PL_nop->op_next */
1125 1268
1126 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1128 1271
1129 /* cctx_run is the alternative tail of transfer() */ 1272 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1273 transfer_tail (aTHX);
1132 1274
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1275 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1281 * runtime errors here, as this is just a random interpreter, not a thread.
1282 */
1136 1283
1137 /* 1284 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1285 * If perl-run returns we assume exit() was being called or the coro
1139 * fell off the end, which seems to be the only valid (non-bug) 1286 * fell off the end, which seems to be the only valid (non-bug)
1140 * reason for perl_run to return. We try to exit by jumping to the 1287 * reason for perl_run to return. We try to exit by jumping to the
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1288 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * coroutine as Coro has no such concept 1289 * coroutine as Coro has no such concept.
1290 * This actually isn't valid with the pthread backend, but OSes requiring
1291 * that backend are too broken to do it in a standards-compliant way.
1143 */ 1292 */
1144 PL_top_env = main_top_env; 1293 PL_top_env = main_top_env;
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1294 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1295 }
1147} 1296}
… …
1224cctx_destroy (coro_cctx *cctx) 1373cctx_destroy (coro_cctx *cctx)
1225{ 1374{
1226 if (!cctx) 1375 if (!cctx)
1227 return; 1376 return;
1228 1377
1378 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1379
1229 --cctx_count; 1380 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1381 coro_destroy (&cctx->cctx);
1231 1382
1232 /* coro_transfer creates new, empty cctx's */ 1383 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1384 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1442/** coroutine switching *****************************************************/
1292 1443
1293static void 1444static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1445transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1446{
1447 /* TODO: throwing up here is considered harmful */
1448
1296 if (expect_true (prev != next)) 1449 if (expect_true (prev != next))
1297 { 1450 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1451 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1452 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1300 1453
1301 if (expect_false (next->flags & CF_RUNNING))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303
1304 if (expect_false (next->flags & CF_DESTROYED)) 1454 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1455 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1306 1456
1307#if !PERL_VERSION_ATLEAST (5,10,0) 1457#if !PERL_VERSION_ATLEAST (5,10,0)
1308 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1458 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1459 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif 1460#endif
1311 } 1461 }
1312} 1462}
1313 1463
1314/* always use the TRANSFER macro */ 1464/* always use the TRANSFER macro */
1315static void NOINLINE 1465static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1466transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1467{
1318 dSTACKLEVEL; 1468 dSTACKLEVEL;
1319 1469
1320 /* sometimes transfer is only called to set idle_sp */ 1470 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1471 if (expect_false (!prev))
1322 { 1472 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1473 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1474 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1475 }
1326 else if (expect_true (prev != next)) 1476 else if (expect_true (prev != next))
1327 { 1477 {
1328 coro_cctx *prev__cctx; 1478 coro_cctx *cctx_prev;
1329 1479
1330 if (expect_false (prev->flags & CF_NEW)) 1480 if (expect_false (prev->flags & CF_NEW))
1331 { 1481 {
1332 /* create a new empty/source context */ 1482 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1483 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1484 prev->flags |= CF_RUNNING;
1336 } 1485 }
1337 1486
1338 prev->flags &= ~CF_RUNNING; 1487 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1498 coro_setup (aTHX_ next);
1350 } 1499 }
1351 else 1500 else
1352 load_perl (aTHX_ next); 1501 load_perl (aTHX_ next);
1353 1502
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1503 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1504 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1505 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1506 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1507 && !force_cctx
1361 )) 1508 ))
1362 { 1509 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1510 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1511 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1512
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1513 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1514 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1515 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1516 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1517 next->cctx = cctx_get (aTHX);
1373 1518
1374 cctx_put (prev__cctx); 1519 cctx_put (cctx_current);
1375 } 1520 }
1521 else
1522 prev->cctx = cctx_current;
1376 1523
1377 ++next->usecount; 1524 ++next->usecount;
1378 1525
1379 if (expect_true (!next->cctx)) 1526 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1527 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1528
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1529 next->cctx = 0;
1383 transfer_next = next;
1384 1530
1385 if (expect_false (prev__cctx != next->cctx)) 1531 if (expect_false (cctx_prev != cctx_current))
1386 { 1532 {
1387 prev__cctx->top_env = PL_top_env; 1533 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1534 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1535 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1536 }
1391 1537
1392 transfer_tail (aTHX); 1538 transfer_tail (aTHX);
1393 } 1539 }
1394} 1540}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1548coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1549{
1404 if (coro->flags & CF_DESTROYED) 1550 if (coro->flags & CF_DESTROYED)
1405 return 0; 1551 return 0;
1406 1552
1407 if (coro->on_destroy) 1553 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1554 coro->on_destroy (aTHX_ coro);
1409 1555
1410 coro->flags |= CF_DESTROYED; 1556 coro->flags |= CF_DESTROYED;
1411 1557
1412 if (coro->flags & CF_READY) 1558 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1562 --coro_nready;
1417 } 1563 }
1418 else 1564 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1565 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1566
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1567 if (coro->mainstack
1422 { 1568 && coro->mainstack != main_mainstack
1423 struct coro temp; 1569 && coro->slot
1424 1570 && !PL_dirty)
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro); 1571 coro_destruct_perl (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436 1572
1437 cctx_destroy (coro->cctx); 1573 cctx_destroy (coro->cctx);
1574 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1575 SvREFCNT_dec (coro->args);
1576 SvREFCNT_dec (CORO_THROW);
1439 1577
1440 if (coro->next) coro->next->prev = coro->prev; 1578 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1579 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1580 if (coro == coro_first) coro_first = coro->next;
1443 1581
… …
1502/** Coro ********************************************************************/ 1640/** Coro ********************************************************************/
1503 1641
1504INLINE void 1642INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1643coro_enq (pTHX_ struct coro *coro)
1506{ 1644{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1646
1510INLINE SV * 1647 SvREFCNT_inc_NN (coro->hv);
1648
1649 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro;
1652}
1653
1654INLINE struct coro *
1511coro_deq (pTHX) 1655coro_deq (pTHX)
1512{ 1656{
1513 int prio; 1657 int prio;
1514 1658
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1660 {
1517 return av_shift (coro_ready [prio]); 1661 struct coro **ready = coro_ready [prio];
1662
1663 if (ready [0])
1664 {
1665 struct coro *coro = ready [0];
1666 ready [0] = coro->next_ready;
1667 return coro;
1668 }
1669 }
1518 1670
1519 return 0; 1671 return 0;
1672}
1673
1674static void
1675invoke_sv_ready_hook_helper (void)
1676{
1677 dTHX;
1678 dSP;
1679
1680 ENTER;
1681 SAVETMPS;
1682
1683 PUSHMARK (SP);
1684 PUTBACK;
1685 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1686
1687 FREETMPS;
1688 LEAVE;
1520} 1689}
1521 1690
1522static int 1691static int
1523api_ready (pTHX_ SV *coro_sv) 1692api_ready (pTHX_ SV *coro_sv)
1524{ 1693{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1694 struct coro *coro = SvSTATE (coro_sv);
1533 1695
1534 if (coro->flags & CF_READY) 1696 if (coro->flags & CF_READY)
1535 return 0; 1697 return 0;
1536 1698
1537 coro->flags |= CF_READY; 1699 coro->flags |= CF_READY;
1538 1700
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1701 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1702
1545 if (sv_hook) 1703 if (!coro_nready++)
1546 { 1704 if (coroapi.readyhook)
1547 dSP; 1705 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1563 1706
1564 return 1; 1707 return 1;
1565} 1708}
1566 1709
1567static int 1710static int
1568api_is_ready (pTHX_ SV *coro_sv) 1711api_is_ready (pTHX_ SV *coro_sv)
1569{ 1712{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1713 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1714}
1572 1715
1716/* expects to own a reference to next->hv */
1573INLINE void 1717INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1718prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1719{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1720 SV *prev_sv = SvRV (coro_current);
1721
1616 ta->prev = SvSTATE_hv (prev_sv); 1722 ta->prev = SvSTATE_hv (prev_sv);
1723 ta->next = next;
1724
1617 TRANSFER_CHECK (*ta); 1725 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1726
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1727 SvRV_set (coro_current, (SV *)next->hv);
1621 1728
1622 free_coro_mortal (aTHX); 1729 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1730 coro_mortal = prev_sv;
1624} 1731}
1625 1732
1733static void
1734prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1735{
1736 for (;;)
1737 {
1738 struct coro *next = coro_deq (aTHX);
1739
1740 if (expect_true (next))
1741 {
1742 /* cannot transfer to destroyed coros, skip and look for next */
1743 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1744 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1745 else
1746 {
1747 next->flags &= ~CF_READY;
1748 --coro_nready;
1749
1750 prepare_schedule_to (aTHX_ ta, next);
1751 break;
1752 }
1753 }
1754 else
1755 {
1756 /* nothing to schedule: call the idle handler */
1757 if (SvROK (sv_idle)
1758 && SvOBJECT (SvRV (sv_idle)))
1759 {
1760 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1761 api_ready (aTHX_ SvRV (sv_idle));
1762 --coro_nready;
1763 }
1764 else
1765 {
1766 dSP;
1767
1768 ENTER;
1769 SAVETMPS;
1770
1771 PUSHMARK (SP);
1772 PUTBACK;
1773 call_sv (sv_idle, G_VOID | G_DISCARD);
1774
1775 FREETMPS;
1776 LEAVE;
1777 }
1778 }
1779 }
1780}
1781
1626INLINE void 1782INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1783prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1784{
1629 api_ready (aTHX_ coro_current); 1785 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1786 prepare_schedule (aTHX_ ta);
… …
1649{ 1805{
1650 struct coro_transfer_args ta; 1806 struct coro_transfer_args ta;
1651 1807
1652 prepare_schedule (aTHX_ &ta); 1808 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1809 TRANSFER (ta, 1);
1810}
1811
1812static void
1813api_schedule_to (pTHX_ SV *coro_sv)
1814{
1815 struct coro_transfer_args ta;
1816 struct coro *next = SvSTATE (coro_sv);
1817
1818 SvREFCNT_inc_NN (coro_sv);
1819 prepare_schedule_to (aTHX_ &ta, next);
1654} 1820}
1655 1821
1656static int 1822static int
1657api_cede (pTHX) 1823api_cede (pTHX)
1658{ 1824{
… …
1687static void 1853static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1854api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1855{
1690 struct coro *coro = SvSTATE (coro_sv); 1856 struct coro *coro = SvSTATE (coro_sv);
1691 1857
1858 if (coro->flags & CF_RUNNING)
1859 croak ("cannot enable tracing on a running coroutine, caught");
1860
1692 if (flags & CC_TRACE) 1861 if (flags & CC_TRACE)
1693 { 1862 {
1694 if (!coro->cctx) 1863 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1864 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1865 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1866 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1867
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1868 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1869 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1870 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1871 {
… …
1705 if (coro->flags & CF_RUNNING) 1874 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1875 PL_runops = RUNOPS_DEFAULT;
1707 else 1876 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1877 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 1878 }
1879}
1880
1881static void
1882coro_call_on_destroy (pTHX_ struct coro *coro)
1883{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886
1887 if (on_destroyp)
1888 {
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890
1891 while (AvFILLp (on_destroy) >= 0)
1892 {
1893 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP);
1897
1898 if (statusp)
1899 {
1900 int i;
1901 AV *status = (AV *)SvRV (*statusp);
1902 EXTEND (SP, AvFILLp (status) + 1);
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 }
1907
1908 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1910 }
1911 }
1912}
1913
1914static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1916{
1917 int i;
1918 HV *hv = (HV *)SvRV (coro_current);
1919 AV *av = newAV ();
1920
1921 av_extend (av, items - 1);
1922 for (i = 0; i < items; ++i)
1923 av_push (av, SvREFCNT_inc_NN (arg [i]));
1924
1925 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1926
1927 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1928 api_ready (aTHX_ sv_manager);
1929
1930 frame->prepare = prepare_schedule;
1931 frame->check = slf_check_repeat;
1932
1933 /* as a minor optimisation, we could unwind all stacks here */
1934 /* but that puts extra pressure on pp_slf, and is not worth much */
1935 /*coro_unwind_stacks (aTHX);*/
1936}
1937
1938/*****************************************************************************/
1939/* async pool handler */
1940
1941static int
1942slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1943{
1944 HV *hv = (HV *)SvRV (coro_current);
1945 struct coro *coro = (struct coro *)frame->data;
1946
1947 if (!coro->invoke_cb)
1948 return 1; /* loop till we have invoke */
1949 else
1950 {
1951 hv_store (hv, "desc", sizeof ("desc") - 1,
1952 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1953
1954 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1955
1956 {
1957 dSP;
1958 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1959 PUTBACK;
1960 }
1961
1962 SvREFCNT_dec (GvAV (PL_defgv));
1963 GvAV (PL_defgv) = coro->invoke_av;
1964 coro->invoke_av = 0;
1965
1966 return 0;
1967 }
1968}
1969
1970static void
1971slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1972{
1973 HV *hv = (HV *)SvRV (coro_current);
1974 struct coro *coro = SvSTATE_hv ((SV *)hv);
1975
1976 if (expect_true (coro->saved_deffh))
1977 {
1978 /* subsequent iteration */
1979 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1980 coro->saved_deffh = 0;
1981
1982 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1983 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1984 {
1985 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1986 coro->invoke_av = newAV ();
1987
1988 frame->prepare = prepare_nop;
1989 }
1990 else
1991 {
1992 av_clear (GvAV (PL_defgv));
1993 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1994
1995 coro->prio = 0;
1996
1997 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1998 api_trace (aTHX_ coro_current, 0);
1999
2000 frame->prepare = prepare_schedule;
2001 av_push (av_async_pool, SvREFCNT_inc (hv));
2002 }
2003 }
2004 else
2005 {
2006 /* first iteration, simply fall through */
2007 frame->prepare = prepare_nop;
2008 }
2009
2010 frame->check = slf_check_pool_handler;
2011 frame->data = (void *)coro;
2012}
2013
2014/*****************************************************************************/
2015/* rouse callback */
2016
2017#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2018
2019static void
2020coro_rouse_callback (pTHX_ CV *cv)
2021{
2022 dXSARGS;
2023 SV *data = (SV *)S_GENSUB_ARG;
2024
2025 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2026 {
2027 /* first call, set args */
2028 SV *coro = SvRV (data);
2029 AV *av = newAV ();
2030
2031 SvRV_set (data, (SV *)av);
2032
2033 /* better take a full copy of the arguments */
2034 while (items--)
2035 av_store (av, items, newSVsv (ST (items)));
2036
2037 api_ready (aTHX_ coro);
2038 SvREFCNT_dec (coro);
2039 }
2040
2041 XSRETURN_EMPTY;
2042}
2043
2044static int
2045slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2046{
2047 SV *data = (SV *)frame->data;
2048
2049 if (CORO_THROW)
2050 return 0;
2051
2052 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2053 return 1;
2054
2055 /* now push all results on the stack */
2056 {
2057 dSP;
2058 AV *av = (AV *)SvRV (data);
2059 int i;
2060
2061 EXTEND (SP, AvFILLp (av) + 1);
2062 for (i = 0; i <= AvFILLp (av); ++i)
2063 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2064
2065 /* we have stolen the elements, so set length to zero and free */
2066 AvFILLp (av) = -1;
2067 av_undef (av);
2068
2069 PUTBACK;
2070 }
2071
2072 return 0;
2073}
2074
2075static void
2076slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 SV *cb;
2079
2080 if (items)
2081 cb = arg [0];
2082 else
2083 {
2084 struct coro *coro = SvSTATE_current;
2085
2086 if (!coro->rouse_cb)
2087 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2088
2089 cb = sv_2mortal (coro->rouse_cb);
2090 coro->rouse_cb = 0;
2091 }
2092
2093 if (!SvROK (cb)
2094 || SvTYPE (SvRV (cb)) != SVt_PVCV
2095 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2096 croak ("Coro::rouse_wait called with illegal callback argument,");
2097
2098 {
2099 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2100 SV *data = (SV *)S_GENSUB_ARG;
2101
2102 frame->data = (void *)data;
2103 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2104 frame->check = slf_check_rouse_wait;
2105 }
2106}
2107
2108static SV *
2109coro_new_rouse_cb (pTHX)
2110{
2111 HV *hv = (HV *)SvRV (coro_current);
2112 struct coro *coro = SvSTATE_hv (hv);
2113 SV *data = newRV_inc ((SV *)hv);
2114 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2115
2116 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2117 SvREFCNT_dec (data); /* magicext increases the refcount */
2118
2119 SvREFCNT_dec (coro->rouse_cb);
2120 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2121
2122 return cb;
2123}
2124
2125/*****************************************************************************/
2126/* schedule-like-function opcode (SLF) */
2127
2128static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2129static const CV *slf_cv;
2130static SV **slf_argv;
2131static int slf_argc, slf_arga; /* count, allocated */
2132static I32 slf_ax; /* top of stack, for restore */
2133
2134/* this restores the stack in the case we patched the entersub, to */
2135/* recreate the stack frame as perl will on following calls */
2136/* since entersub cleared the stack */
2137static OP *
2138pp_restore (pTHX)
2139{
2140 int i;
2141 SV **SP = PL_stack_base + slf_ax;
2142
2143 PUSHMARK (SP);
2144
2145 EXTEND (SP, slf_argc + 1);
2146
2147 for (i = 0; i < slf_argc; ++i)
2148 PUSHs (sv_2mortal (slf_argv [i]));
2149
2150 PUSHs ((SV *)CvGV (slf_cv));
2151
2152 RETURNOP (slf_restore.op_first);
2153}
2154
2155static void
2156slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2157{
2158 SV **arg = (SV **)slf_frame.data;
2159
2160 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2161}
2162
2163static void
2164slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2165{
2166 if (items != 2)
2167 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2168
2169 frame->prepare = slf_prepare_transfer;
2170 frame->check = slf_check_nop;
2171 frame->data = (void *)arg; /* let's hope it will stay valid */
2172}
2173
2174static void
2175slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 frame->prepare = prepare_schedule;
2178 frame->check = slf_check_nop;
2179}
2180
2181static void
2182slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2183{
2184 struct coro *next = (struct coro *)slf_frame.data;
2185
2186 SvREFCNT_inc_NN (next->hv);
2187 prepare_schedule_to (aTHX_ ta, next);
2188}
2189
2190static void
2191slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2192{
2193 if (!items)
2194 croak ("Coro::schedule_to expects a coroutine argument, caught");
2195
2196 frame->data = (void *)SvSTATE (arg [0]);
2197 frame->prepare = slf_prepare_schedule_to;
2198 frame->check = slf_check_nop;
2199}
2200
2201static void
2202slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2203{
2204 api_ready (aTHX_ SvRV (coro_current));
2205
2206 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2207}
2208
2209static void
2210slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2211{
2212 frame->prepare = prepare_cede;
2213 frame->check = slf_check_nop;
2214}
2215
2216static void
2217slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2218{
2219 frame->prepare = prepare_cede_notself;
2220 frame->check = slf_check_nop;
2221}
2222
2223/*
2224 * these not obviously related functions are all rolled into one
2225 * function to increase chances that they all will call transfer with the same
2226 * stack offset
2227 * SLF stands for "schedule-like-function".
2228 */
2229static OP *
2230pp_slf (pTHX)
2231{
2232 I32 checkmark; /* mark SP to see how many elements check has pushed */
2233
2234 /* set up the slf frame, unless it has already been set-up */
2235 /* the latter happens when a new coro has been started */
2236 /* or when a new cctx was attached to an existing coroutine */
2237 if (expect_true (!slf_frame.prepare))
2238 {
2239 /* first iteration */
2240 dSP;
2241 SV **arg = PL_stack_base + TOPMARK + 1;
2242 int items = SP - arg; /* args without function object */
2243 SV *gv = *sp;
2244
2245 /* do a quick consistency check on the "function" object, and if it isn't */
2246 /* for us, divert to the real entersub */
2247 if (SvTYPE (gv) != SVt_PVGV
2248 || !GvCV (gv)
2249 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2250 return PL_ppaddr[OP_ENTERSUB](aTHX);
2251
2252 if (!(PL_op->op_flags & OPf_STACKED))
2253 {
2254 /* ampersand-form of call, use @_ instead of stack */
2255 AV *av = GvAV (PL_defgv);
2256 arg = AvARRAY (av);
2257 items = AvFILLp (av) + 1;
2258 }
2259
2260 /* now call the init function, which needs to set up slf_frame */
2261 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2262 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2263
2264 /* pop args */
2265 SP = PL_stack_base + POPMARK;
2266
2267 PUTBACK;
2268 }
2269
2270 /* now that we have a slf_frame, interpret it! */
2271 /* we use a callback system not to make the code needlessly */
2272 /* complicated, but so we can run multiple perl coros from one cctx */
2273
2274 do
2275 {
2276 struct coro_transfer_args ta;
2277
2278 slf_frame.prepare (aTHX_ &ta);
2279 TRANSFER (ta, 0);
2280
2281 checkmark = PL_stack_sp - PL_stack_base;
2282 }
2283 while (slf_frame.check (aTHX_ &slf_frame));
2284
2285 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2286
2287 /* exception handling */
2288 if (expect_false (CORO_THROW))
2289 {
2290 SV *exception = sv_2mortal (CORO_THROW);
2291
2292 CORO_THROW = 0;
2293 sv_setsv (ERRSV, exception);
2294 croak (0);
2295 }
2296
2297 /* return value handling - mostly like entersub */
2298 /* make sure we put something on the stack in scalar context */
2299 if (GIMME_V == G_SCALAR)
2300 {
2301 dSP;
2302 SV **bot = PL_stack_base + checkmark;
2303
2304 if (sp == bot) /* too few, push undef */
2305 bot [1] = &PL_sv_undef;
2306 else if (sp != bot + 1) /* too many, take last one */
2307 bot [1] = *sp;
2308
2309 SP = bot + 1;
2310
2311 PUTBACK;
2312 }
2313
2314 return NORMAL;
2315}
2316
2317static void
2318api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2319{
2320 int i;
2321 SV **arg = PL_stack_base + ax;
2322 int items = PL_stack_sp - arg + 1;
2323
2324 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2325
2326 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2327 && PL_op->op_ppaddr != pp_slf)
2328 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2329
2330 CvFLAGS (cv) |= CVf_SLF;
2331 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2332 slf_cv = cv;
2333
2334 /* we patch the op, and then re-run the whole call */
2335 /* we have to put the same argument on the stack for this to work */
2336 /* and this will be done by pp_restore */
2337 slf_restore.op_next = (OP *)&slf_restore;
2338 slf_restore.op_type = OP_CUSTOM;
2339 slf_restore.op_ppaddr = pp_restore;
2340 slf_restore.op_first = PL_op;
2341
2342 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2343
2344 if (PL_op->op_flags & OPf_STACKED)
2345 {
2346 if (items > slf_arga)
2347 {
2348 slf_arga = items;
2349 free (slf_argv);
2350 slf_argv = malloc (slf_arga * sizeof (SV *));
2351 }
2352
2353 slf_argc = items;
2354
2355 for (i = 0; i < items; ++i)
2356 slf_argv [i] = SvREFCNT_inc (arg [i]);
2357 }
2358 else
2359 slf_argc = 0;
2360
2361 PL_op->op_ppaddr = pp_slf;
2362 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2363
2364 PL_op = (OP *)&slf_restore;
2365}
2366
2367/*****************************************************************************/
2368/* dynamic wind */
2369
2370static void
2371on_enterleave_call (pTHX_ SV *cb)
2372{
2373 dSP;
2374
2375 PUSHSTACK;
2376
2377 PUSHMARK (SP);
2378 PUTBACK;
2379 call_sv (cb, G_VOID | G_DISCARD);
2380 SPAGAIN;
2381
2382 POPSTACK;
2383}
2384
2385static SV *
2386coro_avp_pop_and_free (pTHX_ AV **avp)
2387{
2388 AV *av = *avp;
2389 SV *res = av_pop (av);
2390
2391 if (AvFILLp (av) < 0)
2392 {
2393 *avp = 0;
2394 SvREFCNT_dec (av);
2395 }
2396
2397 return res;
2398}
2399
2400static void
2401coro_pop_on_enter (pTHX_ void *coro)
2402{
2403 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2404 SvREFCNT_dec (cb);
2405}
2406
2407static void
2408coro_pop_on_leave (pTHX_ void *coro)
2409{
2410 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2411 on_enterleave_call (aTHX_ sv_2mortal (cb));
1710} 2412}
1711 2413
1712/*****************************************************************************/ 2414/*****************************************************************************/
1713/* PerlIO::cede */ 2415/* PerlIO::cede */
1714 2416
… …
1783 PerlIOBuf_get_cnt, 2485 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2486 PerlIOBuf_set_ptrcnt,
1785}; 2487};
1786 2488
1787/*****************************************************************************/ 2489/*****************************************************************************/
2490/* Coro::Semaphore & Coro::Signal */
1788 2491
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2492static SV *
1800pp_restore (pTHX) 2493coro_waitarray_new (pTHX_ int count)
1801{ 2494{
1802 dSP; 2495 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2496 AV *av = newAV ();
2497 SV **ary;
1803 2498
1804 PUSHMARK (SP); 2499 /* unfortunately, building manually saves memory */
2500 Newx (ary, 2, SV *);
2501 AvALLOC (av) = ary;
2502#if PERL_VERSION_ATLEAST (5,10,0)
2503 AvARRAY (av) = ary;
2504#else
2505 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2506 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2507 SvPVX ((SV *)av) = (char *)ary;
2508#endif
2509 AvMAX (av) = 1;
2510 AvFILLp (av) = 0;
2511 ary [0] = newSViv (count);
1805 2512
1806 EXTEND (SP, 3); 2513 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2514}
1814 2515
1815static void 2516/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990 2517
1991static void 2518static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2519coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2520{
1994 SV *count_sv = AvARRAY (av)[0]; 2521 SV *count_sv = AvARRAY (av)[0];
… …
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2533 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2534 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2535 cb = av_shift (av);
2009 2536
2010 if (SvOBJECT (cb)) 2537 if (SvOBJECT (cb))
2538 {
2011 api_ready (aTHX_ cb); 2539 api_ready (aTHX_ cb);
2012 else 2540 --count;
2013 croak ("callbacks not yet supported"); 2541 }
2542 else if (SvTYPE (cb) == SVt_PVCV)
2543 {
2544 dSP;
2545 PUSHMARK (SP);
2546 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2547 PUTBACK;
2548 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2549 }
2014 2550
2015 SvREFCNT_dec (cb); 2551 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2552 }
2019} 2553}
2020 2554
2021static void 2555static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2556coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2558 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2559 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2560}
2027 2561
2028static int 2562static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2563slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2564{
2031 AV *av = (AV *)frame->data; 2565 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2566 SV *count_sv = AvARRAY (av)[0];
2033 2567
2568 /* if we are about to throw, don't actually acquire the lock, just throw */
2569 if (CORO_THROW)
2570 return 0;
2034 if (SvIVX (count_sv) > 0) 2571 else if (SvIVX (count_sv) > 0)
2035 { 2572 {
2036 SvSTATE_current->on_destroy = 0; 2573 SvSTATE_current->on_destroy = 0;
2574
2575 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2576 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2577 else
2578 coro_semaphore_adjust (aTHX_ av, 0);
2579
2038 return 0; 2580 return 0;
2039 } 2581 }
2040 else 2582 else
2041 { 2583 {
2042 int i; 2584 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2593 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2594 return 1;
2053 } 2595 }
2054} 2596}
2055 2597
2056static void 2598static int
2599slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2600{
2601 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2602}
2603
2604static int
2605slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2606{
2607 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2608}
2609
2610static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2611slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2612{
2059 AV *av = (AV *)SvRV (arg [0]); 2613 AV *av = (AV *)SvRV (arg [0]);
2060 2614
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2615 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2616 {
2063 frame->data = (void *)av; 2617 frame->data = (void *)av;
2064 frame->prepare = prepare_nop; 2618 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 } 2619 }
2067 else 2620 else
2068 { 2621 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2622 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070 2623
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2624 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule; 2625 frame->prepare = prepare_schedule;
2073 2626
2074 /* to avoid race conditions when a woken-up coro gets terminated */ 2627 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2628 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2629 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 2630 }
2631}
2079 2632
2633static void
2634slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2635{
2636 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2080 frame->check = slf_check_semaphore_down; 2637 frame->check = slf_check_semaphore_down;
2638}
2081 2639
2640static void
2641slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2642{
2643 if (items >= 2)
2644 {
2645 /* callback form */
2646 AV *av = (AV *)SvRV (arg [0]);
2647 SV *cb_cv = s_get_cv_croak (arg [1]);
2648
2649 av_push (av, SvREFCNT_inc_NN (cb_cv));
2650
2651 if (SvIVX (AvARRAY (av)[0]) > 0)
2652 coro_semaphore_adjust (aTHX_ av, 0);
2653
2654 frame->prepare = prepare_nop;
2655 frame->check = slf_check_nop;
2656 }
2657 else
2658 {
2659 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2660 frame->check = slf_check_semaphore_wait;
2661 }
2662}
2663
2664/* signal */
2665
2666static void
2667coro_signal_wake (pTHX_ AV *av, int count)
2668{
2669 SvIVX (AvARRAY (av)[0]) = 0;
2670
2671 /* now signal count waiters */
2672 while (count > 0 && AvFILLp (av) > 0)
2673 {
2674 SV *cb;
2675
2676 /* swap first two elements so we can shift a waiter */
2677 cb = AvARRAY (av)[0];
2678 AvARRAY (av)[0] = AvARRAY (av)[1];
2679 AvARRAY (av)[1] = cb;
2680
2681 cb = av_shift (av);
2682
2683 if (SvTYPE (cb) == SVt_PVCV)
2684 {
2685 dSP;
2686 PUSHMARK (SP);
2687 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2688 PUTBACK;
2689 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2690 }
2691 else
2692 {
2693 api_ready (aTHX_ cb);
2694 sv_setiv (cb, 0); /* signal waiter */
2695 }
2696
2697 SvREFCNT_dec (cb);
2698
2699 --count;
2700 }
2701}
2702
2703static int
2704slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2705{
2706 /* if we are about to throw, also stop waiting */
2707 return SvROK ((SV *)frame->data) && !CORO_THROW;
2708}
2709
2710static void
2711slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2712{
2713 AV *av = (AV *)SvRV (arg [0]);
2714
2715 if (items >= 2)
2716 {
2717 SV *cb_cv = s_get_cv_croak (arg [1]);
2718 av_push (av, SvREFCNT_inc_NN (cb_cv));
2719
2720 if (SvIVX (AvARRAY (av)[0]))
2721 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2722
2723 frame->prepare = prepare_nop;
2724 frame->check = slf_check_nop;
2725 }
2726 else if (SvIVX (AvARRAY (av)[0]))
2727 {
2728 SvIVX (AvARRAY (av)[0]) = 0;
2729 frame->prepare = prepare_nop;
2730 frame->check = slf_check_nop;
2731 }
2732 else
2733 {
2734 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2735
2736 av_push (av, waiter);
2737
2738 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2739 frame->prepare = prepare_schedule;
2740 frame->check = slf_check_signal_wait;
2741 }
2082} 2742}
2083 2743
2084/*****************************************************************************/ 2744/*****************************************************************************/
2745/* Coro::AIO */
2085 2746
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2747#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2087 2748
2088/* create a closure from XS, returns a code reference */ 2749/* helper storage struct */
2089/* the arg can be accessed via GENSUB_ARG from the callback */ 2750struct io_state
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{ 2751{
2094 CV *cv = (CV *)NEWSV (0, 0); 2752 int errorno;
2753 I32 laststype; /* U16 in 5.10.0 */
2754 int laststatval;
2755 Stat_t statcache;
2756};
2095 2757
2758static void
2759coro_aio_callback (pTHX_ CV *cv)
2760{
2761 dXSARGS;
2762 AV *state = (AV *)S_GENSUB_ARG;
2763 SV *coro = av_pop (state);
2764 SV *data_sv = newSV (sizeof (struct io_state));
2765
2766 av_extend (state, items - 1);
2767
2096 sv_upgrade ((SV *)cv, SVt_PVCV); 2768 sv_upgrade (data_sv, SVt_PV);
2769 SvCUR_set (data_sv, sizeof (struct io_state));
2770 SvPOK_only (data_sv);
2097 2771
2098 CvANON_on (cv); 2772 {
2099 CvISXSUB_on (cv); 2773 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102 2774
2103 return newRV_noinc ((SV *)cv); 2775 data->errorno = errno;
2776 data->laststype = PL_laststype;
2777 data->laststatval = PL_laststatval;
2778 data->statcache = PL_statcache;
2779 }
2780
2781 /* now build the result vector out of all the parameters and the data_sv */
2782 {
2783 int i;
2784
2785 for (i = 0; i < items; ++i)
2786 av_push (state, SvREFCNT_inc_NN (ST (i)));
2787 }
2788
2789 av_push (state, data_sv);
2790
2791 api_ready (aTHX_ coro);
2792 SvREFCNT_dec (coro);
2793 SvREFCNT_dec ((AV *)state);
2794}
2795
2796static int
2797slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2798{
2799 AV *state = (AV *)frame->data;
2800
2801 /* if we are about to throw, return early */
2802 /* this does not cancel the aio request, but at least */
2803 /* it quickly returns */
2804 if (CORO_THROW)
2805 return 0;
2806
2807 /* one element that is an RV? repeat! */
2808 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2809 return 1;
2810
2811 /* restore status */
2812 {
2813 SV *data_sv = av_pop (state);
2814 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2815
2816 errno = data->errorno;
2817 PL_laststype = data->laststype;
2818 PL_laststatval = data->laststatval;
2819 PL_statcache = data->statcache;
2820
2821 SvREFCNT_dec (data_sv);
2822 }
2823
2824 /* push result values */
2825 {
2826 dSP;
2827 int i;
2828
2829 EXTEND (SP, AvFILLp (state) + 1);
2830 for (i = 0; i <= AvFILLp (state); ++i)
2831 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2832
2833 PUTBACK;
2834 }
2835
2836 return 0;
2837}
2838
2839static void
2840slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2841{
2842 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2843 SV *coro_hv = SvRV (coro_current);
2844 struct coro *coro = SvSTATE_hv (coro_hv);
2845
2846 /* put our coroutine id on the state arg */
2847 av_push (state, SvREFCNT_inc_NN (coro_hv));
2848
2849 /* first see whether we have a non-zero priority and set it as AIO prio */
2850 if (coro->prio)
2851 {
2852 dSP;
2853
2854 static SV *prio_cv;
2855 static SV *prio_sv;
2856
2857 if (expect_false (!prio_cv))
2858 {
2859 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2860 prio_sv = newSViv (0);
2861 }
2862
2863 PUSHMARK (SP);
2864 sv_setiv (prio_sv, coro->prio);
2865 XPUSHs (prio_sv);
2866
2867 PUTBACK;
2868 call_sv (prio_cv, G_VOID | G_DISCARD);
2869 }
2870
2871 /* now call the original request */
2872 {
2873 dSP;
2874 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2875 int i;
2876
2877 PUSHMARK (SP);
2878
2879 /* first push all args to the stack */
2880 EXTEND (SP, items + 1);
2881
2882 for (i = 0; i < items; ++i)
2883 PUSHs (arg [i]);
2884
2885 /* now push the callback closure */
2886 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2887
2888 /* now call the AIO function - we assume our request is uncancelable */
2889 PUTBACK;
2890 call_sv ((SV *)req, G_VOID | G_DISCARD);
2891 }
2892
2893 /* now that the requets is going, we loop toll we have a result */
2894 frame->data = (void *)state;
2895 frame->prepare = prepare_schedule;
2896 frame->check = slf_check_aio_req;
2897}
2898
2899static void
2900coro_aio_req_xs (pTHX_ CV *cv)
2901{
2902 dXSARGS;
2903
2904 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2905
2906 XSRETURN_EMPTY;
2104} 2907}
2105 2908
2106/*****************************************************************************/ 2909/*****************************************************************************/
2910
2911#if CORO_CLONE
2912# include "clone.c"
2913#endif
2107 2914
2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2915MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2109 2916
2110PROTOTYPES: DISABLE 2917PROTOTYPES: DISABLE
2111 2918
… …
2116 coro_thx = PERL_GET_CONTEXT; 2923 coro_thx = PERL_GET_CONTEXT;
2117# endif 2924# endif
2118#endif 2925#endif
2119 BOOT_PAGESIZE; 2926 BOOT_PAGESIZE;
2120 2927
2928 cctx_current = cctx_new_empty ();
2929
2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2930 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2931 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2123 2932
2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2933 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2934 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2144 2953
2145 { 2954 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2955 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147 2956
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2957 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf, 2958 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2150 newSVpv ("coro_slf", 0), 0);
2151 2959
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2960 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf, 2961 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2154 newSVpv ("coro schedule like function", 0), 0);
2155 } 2962 }
2156 2963
2157 coroapi.ver = CORO_API_VERSION; 2964 coroapi.ver = CORO_API_VERSION;
2158 coroapi.rev = CORO_API_REVISION; 2965 coroapi.rev = CORO_API_REVISION;
2159 2966
… …
2171 2978
2172 if (!svp) croak ("Time::HiRes is required"); 2979 if (!svp) croak ("Time::HiRes is required");
2173 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2980 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2174 2981
2175 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2982 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2983
2984 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2985 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2176 } 2986 }
2177 2987
2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2988 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2179} 2989}
2180 2990
2181SV * 2991SV *
2182new (char *klass, ...) 2992new (char *klass, ...)
2993 ALIAS:
2994 Coro::new = 1
2183 CODE: 2995 CODE:
2184{ 2996{
2185 struct coro *coro; 2997 struct coro *coro;
2186 MAGIC *mg; 2998 MAGIC *mg;
2187 HV *hv; 2999 HV *hv;
3000 SV *cb;
2188 int i; 3001 int i;
3002
3003 if (items > 1)
3004 {
3005 cb = s_get_cv_croak (ST (1));
3006
3007 if (!ix)
3008 {
3009 if (CvISXSUB (cb))
3010 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3011
3012 if (!CvROOT (cb))
3013 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3014 }
3015 }
2189 3016
2190 Newz (0, coro, 1, struct coro); 3017 Newz (0, coro, 1, struct coro);
2191 coro->args = newAV (); 3018 coro->args = newAV ();
2192 coro->flags = CF_NEW; 3019 coro->flags = CF_NEW;
2193 3020
… …
2198 coro->hv = hv = newHV (); 3025 coro->hv = hv = newHV ();
2199 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3026 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2200 mg->mg_flags |= MGf_DUP; 3027 mg->mg_flags |= MGf_DUP;
2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3028 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2202 3029
3030 if (items > 1)
3031 {
2203 av_extend (coro->args, items - 1); 3032 av_extend (coro->args, items - 1 + ix - 1);
3033
3034 if (ix)
3035 {
3036 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3037 cb = (SV *)cv_coro_run;
3038 }
3039
3040 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3041
2204 for (i = 1; i < items; i++) 3042 for (i = 2; i < items; i++)
2205 av_push (coro->args, newSVsv (ST (i))); 3043 av_push (coro->args, newSVsv (ST (i)));
3044 }
2206} 3045}
2207 OUTPUT: 3046 OUTPUT:
2208 RETVAL 3047 RETVAL
2209
2210void
2211_set_stacklevel (...)
2212 CODE:
2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2214 3048
2215void 3049void
2216transfer (...) 3050transfer (...)
2217 PROTOTYPE: $$ 3051 PROTOTYPE: $$
2218 CODE: 3052 CODE:
2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3053 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2220 3054
2221bool 3055bool
2222_destroy (SV *coro_sv) 3056_destroy (SV *coro_sv)
2223 CODE: 3057 CODE:
2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3058 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2228void 3062void
2229_exit (int code) 3063_exit (int code)
2230 PROTOTYPE: $ 3064 PROTOTYPE: $
2231 CODE: 3065 CODE:
2232 _exit (code); 3066 _exit (code);
3067
3068SV *
3069clone (Coro::State coro)
3070 CODE:
3071{
3072#if CORO_CLONE
3073 struct coro *ncoro = coro_clone (aTHX_ coro);
3074 MAGIC *mg;
3075 /* TODO: too much duplication */
3076 ncoro->hv = newHV ();
3077 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3078 mg->mg_flags |= MGf_DUP;
3079 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3080#else
3081 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3082#endif
3083}
3084 OUTPUT:
3085 RETVAL
2233 3086
2234int 3087int
2235cctx_stacksize (int new_stacksize = 0) 3088cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$ 3089 PROTOTYPE: ;$
2237 CODE: 3090 CODE:
… …
2287 eval = 1 3140 eval = 1
2288 CODE: 3141 CODE:
2289{ 3142{
2290 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3143 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2291 { 3144 {
2292 struct coro temp; 3145 struct coro *current = SvSTATE_current;
2293 3146
2294 if (!(coro->flags & CF_RUNNING)) 3147 if (current != coro)
2295 { 3148 {
2296 PUTBACK; 3149 PUTBACK;
2297 save_perl (aTHX_ &temp); 3150 save_perl (aTHX_ current);
2298 load_perl (aTHX_ coro); 3151 load_perl (aTHX_ coro);
3152 SPAGAIN;
2299 } 3153 }
2300 3154
2301 {
2302 dSP;
2303 ENTER;
2304 SAVETMPS;
2305 PUTBACK;
2306 PUSHSTACK; 3155 PUSHSTACK;
3156
2307 PUSHMARK (SP); 3157 PUSHMARK (SP);
3158 PUTBACK;
2308 3159
2309 if (ix) 3160 if (ix)
2310 eval_sv (coderef, 0); 3161 eval_sv (coderef, 0);
2311 else 3162 else
2312 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3163 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2313 3164
2314 POPSTACK; 3165 POPSTACK;
2315 SPAGAIN; 3166 SPAGAIN;
2316 FREETMPS;
2317 LEAVE;
2318 PUTBACK;
2319 }
2320 3167
2321 if (!(coro->flags & CF_RUNNING)) 3168 if (current != coro)
2322 { 3169 {
3170 PUTBACK;
2323 save_perl (aTHX_ coro); 3171 save_perl (aTHX_ coro);
2324 load_perl (aTHX_ &temp); 3172 load_perl (aTHX_ current);
2325 SPAGAIN; 3173 SPAGAIN;
2326 } 3174 }
2327 } 3175 }
2328} 3176}
2329 3177
… …
2333 ALIAS: 3181 ALIAS:
2334 is_ready = CF_READY 3182 is_ready = CF_READY
2335 is_running = CF_RUNNING 3183 is_running = CF_RUNNING
2336 is_new = CF_NEW 3184 is_new = CF_NEW
2337 is_destroyed = CF_DESTROYED 3185 is_destroyed = CF_DESTROYED
3186 is_suspended = CF_SUSPENDED
2338 CODE: 3187 CODE:
2339 RETVAL = boolSV (coro->flags & ix); 3188 RETVAL = boolSV (coro->flags & ix);
2340 OUTPUT: 3189 OUTPUT:
2341 RETVAL 3190 RETVAL
2342 3191
2343void 3192void
2344throw (Coro::State self, SV *throw = &PL_sv_undef) 3193throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$ 3194 PROTOTYPE: $;$
2346 CODE: 3195 CODE:
3196{
3197 struct coro *current = SvSTATE_current;
3198 SV **throwp = self == current ? &CORO_THROW : &self->except;
2347 SvREFCNT_dec (self->throw); 3199 SvREFCNT_dec (*throwp);
3200 SvGETMAGIC (throw);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3201 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3202}
2349 3203
2350void 3204void
2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3205api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$ 3206 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags 3207 C_ARGS: aTHX_ coro, flags
2354 3208
2355SV * 3209SV *
2356has_cctx (Coro::State coro) 3210has_cctx (Coro::State coro)
2357 PROTOTYPE: $ 3211 PROTOTYPE: $
2358 CODE: 3212 CODE:
2359 RETVAL = boolSV (!!coro->cctx); 3213 /* maybe manage the running flag differently */
3214 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2360 OUTPUT: 3215 OUTPUT:
2361 RETVAL 3216 RETVAL
2362 3217
2363int 3218int
2364is_traced (Coro::State coro) 3219is_traced (Coro::State coro)
… …
2384 3239
2385void 3240void
2386force_cctx () 3241force_cctx ()
2387 PROTOTYPE: 3242 PROTOTYPE:
2388 CODE: 3243 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0; 3244 cctx_current->idle_sp = 0;
2390 3245
2391void 3246void
2392swap_defsv (Coro::State self) 3247swap_defsv (Coro::State self)
2393 PROTOTYPE: $ 3248 PROTOTYPE: $
2394 ALIAS: 3249 ALIAS:
… …
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3257 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403 3258
2404 SV *tmp = *src; *src = *dst; *dst = tmp; 3259 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 } 3260 }
2406 3261
3262void
3263cancel (Coro::State self)
3264 CODE:
3265 coro_state_destroy (aTHX_ self);
3266 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3267
3268
3269SV *
3270enable_times (int enabled = enable_times)
3271 CODE:
3272{
3273 RETVAL = boolSV (enable_times);
3274
3275 if (enabled != enable_times)
3276 {
3277 enable_times = enabled;
3278
3279 coro_times_update ();
3280 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3281 }
3282}
3283 OUTPUT:
3284 RETVAL
3285
3286void
3287times (Coro::State self)
3288 PPCODE:
3289{
3290 struct coro *current = SvSTATE (coro_current);
3291
3292 if (expect_false (current == self))
3293 {
3294 coro_times_update ();
3295 coro_times_add (SvSTATE (coro_current));
3296 }
3297
3298 EXTEND (SP, 2);
3299 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3300 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3301
3302 if (expect_false (current == self))
3303 coro_times_sub (SvSTATE (coro_current));
3304}
3305
2407MODULE = Coro::State PACKAGE = Coro 3306MODULE = Coro::State PACKAGE = Coro
2408 3307
2409BOOT: 3308BOOT:
2410{ 3309{
2411 int i;
2412
2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3310 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3311 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2416 3312 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3313 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3314 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2418 SvREADONLY_on (coro_current); 3315 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3316 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3317 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3318 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3319
3320 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3321 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3322 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3323 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2419 3324
2420 coro_stash = gv_stashpv ("Coro", TRUE); 3325 coro_stash = gv_stashpv ("Coro", TRUE);
2421 3326
2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3327 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2423 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3328 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2424 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3329 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2425 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3330 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2426 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3331 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2427 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3332 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2428
2429 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2430 coro_ready[i] = newAV ();
2431 3333
2432 { 3334 {
2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3335 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2434 3336
2435 coroapi.schedule = api_schedule; 3337 coroapi.schedule = api_schedule;
3338 coroapi.schedule_to = api_schedule_to;
2436 coroapi.cede = api_cede; 3339 coroapi.cede = api_cede;
2437 coroapi.cede_notself = api_cede_notself; 3340 coroapi.cede_notself = api_cede_notself;
2438 coroapi.ready = api_ready; 3341 coroapi.ready = api_ready;
2439 coroapi.is_ready = api_is_ready; 3342 coroapi.is_ready = api_is_ready;
2440 coroapi.nready = coro_nready; 3343 coroapi.nready = coro_nready;
2441 coroapi.current = coro_current; 3344 coroapi.current = coro_current;
2442 3345
2443 GCoroAPI = &coroapi; 3346 /*GCoroAPI = &coroapi;*/
2444 sv_setiv (sv, (IV)&coroapi); 3347 sv_setiv (sv, (IV)&coroapi);
2445 SvREADONLY_on (sv); 3348 SvREADONLY_on (sv);
2446 } 3349 }
2447} 3350}
2448 3351
2449void 3352void
3353terminate (...)
3354 CODE:
3355 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3356
3357void
2450schedule (...) 3358schedule (...)
2451 CODE: 3359 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3360 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3361
3362void
3363schedule_to (...)
3364 CODE:
3365 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3366
3367void
3368cede_to (...)
3369 CODE:
3370 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2453 3371
2454void 3372void
2455cede (...) 3373cede (...)
2456 CODE: 3374 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3375 CORO_EXECUTE_SLF_XS (slf_init_cede);
2458 3376
2459void 3377void
2460cede_notself (...) 3378cede_notself (...)
2461 CODE: 3379 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3380 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2463 3381
2464void 3382void
2465_set_current (SV *current) 3383_set_current (SV *current)
2466 PROTOTYPE: $ 3384 PROTOTYPE: $
2467 CODE: 3385 CODE:
… …
2471void 3389void
2472_set_readyhook (SV *hook) 3390_set_readyhook (SV *hook)
2473 PROTOTYPE: $ 3391 PROTOTYPE: $
2474 CODE: 3392 CODE:
2475 SvREFCNT_dec (coro_readyhook); 3393 SvREFCNT_dec (coro_readyhook);
3394 SvGETMAGIC (hook);
3395 if (SvOK (hook))
3396 {
2476 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3397 coro_readyhook = newSVsv (hook);
3398 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3399 }
3400 else
3401 {
3402 coro_readyhook = 0;
3403 CORO_READYHOOK = 0;
3404 }
2477 3405
2478int 3406int
2479prio (Coro::State coro, int newprio = 0) 3407prio (Coro::State coro, int newprio = 0)
2480 PROTOTYPE: $;$ 3408 PROTOTYPE: $;$
2481 ALIAS: 3409 ALIAS:
… …
2487 if (items > 1) 3415 if (items > 1)
2488 { 3416 {
2489 if (ix) 3417 if (ix)
2490 newprio = coro->prio - newprio; 3418 newprio = coro->prio - newprio;
2491 3419
2492 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3420 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2493 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3421 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2494 3422
2495 coro->prio = newprio; 3423 coro->prio = newprio;
2496 } 3424 }
2497} 3425}
2498 OUTPUT: 3426 OUTPUT:
… …
2512 CODE: 3440 CODE:
2513 RETVAL = coro_nready; 3441 RETVAL = coro_nready;
2514 OUTPUT: 3442 OUTPUT:
2515 RETVAL 3443 RETVAL
2516 3444
2517# for async_pool speedup
2518void 3445void
2519_pool_1 (SV *cb) 3446suspend (Coro::State self)
3447 PROTOTYPE: $
2520 CODE: 3448 CODE:
2521{ 3449 self->flags |= CF_SUSPENDED;
2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
2524 AV *defav = GvAV (PL_defgv);
2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2526 AV *invoke_av;
2527 int i, len;
2528
2529 if (!invoke)
2530 {
2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
2534 croak ("\3async_pool terminate\2\n");
2535 }
2536
2537 SvREFCNT_dec (coro->saved_deffh);
2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2539
2540 hv_store (hv, "desc", sizeof ("desc") - 1,
2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2542
2543 invoke_av = (AV *)SvRV (invoke);
2544 len = av_len (invoke_av);
2545
2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2547
2548 if (len > 0)
2549 {
2550 av_fill (defav, len - 1);
2551 for (i = 0; i < len; ++i)
2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2553 }
2554}
2555 3450
2556void 3451void
2557_pool_2 (SV *cb) 3452resume (Coro::State self)
3453 PROTOTYPE: $
2558 CODE: 3454 CODE:
2559{ 3455 self->flags &= ~CF_SUSPENDED;
2560 struct coro *coro = SvSTATE_current;
2561
2562 sv_setsv (cb, &PL_sv_undef);
2563
2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2565 coro->saved_deffh = 0;
2566
2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
2573 croak ("\3async_pool terminate\2\n");
2574 }
2575
2576 av_clear (GvAV (PL_defgv));
2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2579
2580 coro->prio = 0;
2581
2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2583 api_trace (aTHX_ coro_current, 0);
2584
2585 av_push (av_async_pool, newSVsv (coro_current));
2586}
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590 3456
2591void 3457void
2592_get_state (SV *self) 3458_pool_handler (...)
3459 CODE:
3460 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3461
3462void
3463async_pool (SV *cv, ...)
2593 PROTOTYPE: $ 3464 PROTOTYPE: &@
2594 PPCODE: 3465 PPCODE:
2595{ 3466{
2596 AV *defav = GvAV (PL_defgv); 3467 HV *hv = (HV *)av_pop (av_async_pool);
2597 AV *av = newAV (); 3468 AV *av = newAV ();
3469 SV *cb = ST (0);
2598 int i; 3470 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603 3471
2604 data->errorno = errno; 3472 av_extend (av, items - 2);
2605 data->laststype = PL_laststype; 3473 for (i = 1; i < items; ++i)
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3474 av_push (av, SvREFCNT_inc_NN (ST (i)));
2613 3475
2614 av_push (av, data_sv); 3476 if ((SV *)hv == &PL_sv_undef)
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 { 3477 {
2661 PUSHMARK (SP); 3478 PUSHMARK (SP);
3479 EXTEND (SP, 2);
3480 PUSHs (sv_Coro);
3481 PUSHs ((SV *)cv_pool_handler);
2662 PUTBACK; 3482 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3483 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2664 SPAGAIN; 3484 SPAGAIN;
3485
3486 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2665 } 3487 }
2666 3488
2667 --incede; 3489 {
3490 struct coro *coro = SvSTATE_hv (hv);
3491
3492 assert (!coro->invoke_cb);
3493 assert (!coro->invoke_av);
3494 coro->invoke_cb = SvREFCNT_inc (cb);
3495 coro->invoke_av = av;
3496 }
3497
3498 api_ready (aTHX_ (SV *)hv);
3499
3500 if (GIMME_V != G_VOID)
3501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3502 else
3503 SvREFCNT_dec (hv);
3504}
3505
3506SV *
3507rouse_cb ()
3508 PROTOTYPE:
3509 CODE:
3510 RETVAL = coro_new_rouse_cb (aTHX);
3511 OUTPUT:
3512 RETVAL
3513
3514void
3515rouse_wait (...)
3516 PROTOTYPE: ;$
3517 PPCODE:
3518 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3519
3520void
3521on_enter (SV *block)
3522 ALIAS:
3523 on_leave = 1
3524 PROTOTYPE: &
3525 CODE:
3526{
3527 struct coro *coro = SvSTATE_current;
3528 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3529
3530 block = s_get_cv_croak (block);
3531
3532 if (!*avp)
3533 *avp = newAV ();
3534
3535 av_push (*avp, SvREFCNT_inc (block));
3536
3537 if (!ix)
3538 on_enterleave_call (aTHX_ block);
3539
3540 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3541 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3542 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2668} 3543}
2669 3544
2670 3545
2671MODULE = Coro::State PACKAGE = PerlIO::cede 3546MODULE = Coro::State PACKAGE = PerlIO::cede
2672 3547
2673BOOT: 3548BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3549 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 3550
3551
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 3552MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 3553
2678SV * 3554SV *
2679new (SV *klass, SV *count_ = 0) 3555new (SV *klass, SV *count = 0)
2680 CODE: 3556 CODE:
2681{ 3557{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3558 int semcnt = 1;
2683 AV *av = newAV (); 3559
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3560 if (count)
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3561 {
3562 SvGETMAGIC (count);
3563
3564 if (SvOK (count))
3565 semcnt = SvIV (count);
3566 }
3567
3568 RETVAL = sv_bless (
3569 coro_waitarray_new (aTHX_ semcnt),
3570 GvSTASH (CvGV (cv))
3571 );
2686} 3572}
3573 OUTPUT:
3574 RETVAL
3575
3576# helper for Coro::Channel and others
3577SV *
3578_alloc (int count)
3579 CODE:
3580 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 3581 OUTPUT:
2688 RETVAL 3582 RETVAL
2689 3583
2690SV * 3584SV *
2691count (SV *self) 3585count (SV *self)
… …
2700 adjust = 1 3594 adjust = 1
2701 CODE: 3595 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3596 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 3597
2704void 3598void
2705down (SV *self) 3599down (...)
2706 CODE: 3600 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3601 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3602
3603void
3604wait (...)
3605 CODE:
3606 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2708 3607
2709void 3608void
2710try (SV *self) 3609try (SV *self)
2711 PPCODE: 3610 PPCODE:
2712{ 3611{
… …
2724 XSRETURN_NO; 3623 XSRETURN_NO;
2725} 3624}
2726 3625
2727void 3626void
2728waiters (SV *self) 3627waiters (SV *self)
2729 CODE: 3628 PPCODE:
2730{ 3629{
2731 AV *av = (AV *)SvRV (self); 3630 AV *av = (AV *)SvRV (self);
3631 int wcount = AvFILLp (av) + 1 - 1;
2732 3632
2733 if (GIMME_V == G_SCALAR) 3633 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3634 XPUSHs (sv_2mortal (newSViv (wcount)));
2735 else 3635 else
2736 { 3636 {
2737 int i; 3637 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1); 3638 EXTEND (SP, wcount);
2739 for (i = 1; i <= AvFILLp (av); ++i) 3639 for (i = 1; i <= wcount; ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i])); 3640 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2741 } 3641 }
2742} 3642}
2743 3643
3644MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3645
3646void
3647_may_delete (SV *sem, int count, int extra_refs)
3648 PPCODE:
3649{
3650 AV *av = (AV *)SvRV (sem);
3651
3652 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3653 && AvFILLp (av) == 0 /* no waiters, just count */
3654 && SvIV (AvARRAY (av)[0]) == count)
3655 XSRETURN_YES;
3656
3657 XSRETURN_NO;
3658}
3659
3660MODULE = Coro::State PACKAGE = Coro::Signal
3661
3662SV *
3663new (SV *klass)
3664 CODE:
3665 RETVAL = sv_bless (
3666 coro_waitarray_new (aTHX_ 0),
3667 GvSTASH (CvGV (cv))
3668 );
3669 OUTPUT:
3670 RETVAL
3671
3672void
3673wait (...)
3674 CODE:
3675 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3676
3677void
3678broadcast (SV *self)
3679 CODE:
3680{
3681 AV *av = (AV *)SvRV (self);
3682 coro_signal_wake (aTHX_ av, AvFILLp (av));
3683}
3684
3685void
3686send (SV *self)
3687 CODE:
3688{
3689 AV *av = (AV *)SvRV (self);
3690
3691 if (AvFILLp (av))
3692 coro_signal_wake (aTHX_ av, 1);
3693 else
3694 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3695}
3696
3697IV
3698awaited (SV *self)
3699 CODE:
3700 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3701 OUTPUT:
3702 RETVAL
3703
3704
3705MODULE = Coro::State PACKAGE = Coro::AnyEvent
3706
3707BOOT:
3708 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3709
3710void
3711_schedule (...)
3712 CODE:
3713{
3714 static int incede;
3715
3716 api_cede_notself (aTHX);
3717
3718 ++incede;
3719 while (coro_nready >= incede && api_cede (aTHX))
3720 ;
3721
3722 sv_setsv (sv_activity, &PL_sv_undef);
3723 if (coro_nready >= incede)
3724 {
3725 PUSHMARK (SP);
3726 PUTBACK;
3727 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3728 }
3729
3730 --incede;
3731}
3732
3733
3734MODULE = Coro::State PACKAGE = Coro::AIO
3735
3736void
3737_register (char *target, char *proto, SV *req)
3738 CODE:
3739{
3740 SV *req_cv = s_get_cv_croak (req);
3741 /* newXSproto doesn't return the CV on 5.8 */
3742 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3743 sv_setpv ((SV *)slf_cv, proto);
3744 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3745}
3746
3747MODULE = Coro::State PACKAGE = Coro::Select
3748
3749void
3750patch_pp_sselect ()
3751 CODE:
3752 if (!coro_old_pp_sselect)
3753 {
3754 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3755 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3756 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3757 }
3758
3759void
3760unpatch_pp_sselect ()
3761 CODE:
3762 if (coro_old_pp_sselect)
3763 {
3764 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3765 coro_old_pp_sselect = 0;
3766 }
3767
3768

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