ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.368 by root, Thu Aug 13 02:35:41 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
51#endif 51#endif
52 52
53/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
108#endif 58#endif
109 59
110#ifndef CORO_STACKGUARD 60#ifndef CORO_STACKGUARD
… …
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128 80
129#if __GNUC__ >= 3 81#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 84# define INLINE static inline
133#else 85#else
134# define attribute(x) 86# define attribute(x)
135# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
136# define INLINE static 88# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
141 93
142#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
143 95
144#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
145 98
146#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 100# if CORO_PTHREAD
152static void *coro_thx; 101static void *coro_thx;
153# endif 102# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 103#endif
161 104
162# undef LOCK 105#ifdef __linux
163# define LOCK (void)0 106# include <time.h> /* for timespec */
164# undef UNLOCK 107# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 108# ifdef SYS_clock_gettime
166 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 110# define CORO_CLOCK_MONOTONIC 1
168struct io_state 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 112# endif
170 AV *res; 113#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 114
177static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
178 121
179static U32 cctx_gen; 122static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 126static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
187 133
188static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 136static SV *rv_diehook;
191static SV *rv_warnhook; 137static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
193 139
194/* async_pool helper stuff */ 140/* async_pool helper stuff */
195static SV *sv_pool_rss; 141static SV *sv_pool_rss;
196static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
198 148
199/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
200static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
201 157
202static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
204 160
205enum { 161enum {
… …
231 int valgrind_id; 187 int valgrind_id;
232#endif 188#endif
233 unsigned char flags; 189 unsigned char flags;
234} coro_cctx; 190} coro_cctx;
235 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
236enum { 196enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 202};
242 203
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 205typedef struct
245{ 206{
246 SV *defsv; 207 SV *defsv;
247 AV *defav; 208 AV *defav;
248 SV *errsv; 209 SV *errsv;
249 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
250#define VAR(name,type) type name; 212#define VAR(name,type) type name;
251# include "state.h" 213# include "state.h"
252#undef VAR 214#undef VAR
253} perl_slots; 215} perl_slots;
254 216
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 218
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
267struct coro { 220struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 222 coro_cctx *cctx;
270 223
271 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 228 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 229 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
276 231
232 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
281 238
282 /* statistics */ 239 /* statistics */
283 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
284 241
285 /* coro process data */ 242 /* coro process data */
286 int prio; 243 int prio;
287 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
288 246
289 /* async_pool */ 247 /* async_pool */
290 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;
291 258
292 /* linked list */ 259 /* linked list */
293 struct coro *next, *prev; 260 struct coro *next, *prev;
294}; 261};
295 262
296typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
298 265
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 */
299static struct slf_frame slf_frame; /* the current slf frame */ 269static struct CoroSLF slf_frame; /* the current slf frame */
300 270
301/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
302 272
303#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
304#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
305#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
306#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
307#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
308#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
309 279
310/* for Coro.pm */ 280/* for Coro.pm */
311static SV *coro_current; 281static SV *coro_current;
312static SV *coro_readyhook; 282static SV *coro_readyhook;
313static 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;
314static struct coro *coro_first; 285static struct coro *coro_first;
315#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}
316 307
317/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
318 309
319static SV * 310static SV *
320coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
344 get_hv (name, create); 335 get_hv (name, create);
345#endif 336#endif
346 return get_hv (name, create); 337 return get_hv (name, create);
347} 338}
348 339
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
349static AV * 439static AV *
350coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
351{ 441{
352 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
353 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
354 444
355 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
360 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
361#endif 451#endif
362 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
363 --AvFILLp (padlist); 453 --AvFILLp (padlist);
364 454
365 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
366 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
367 457
368 return newpadlist; 458 return newpadlist;
369} 459}
370 460
371static void 461static void
372free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
373{ 463{
374 /* may be during global destruction */ 464 /* may be during global destruction */
375 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
376 { 466 {
377 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
378 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
379 { 470 {
380 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
381 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
382 { 473 I32 j = AvFILLp (av);
383 SV *sv; 474
384 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
385 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
386
387 SvREFCNT_dec (*svp);
388 }
389 } 480 }
390 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
391 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
392 } 486 }
393} 487}
394 488
395static int 489static int
396coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
397{ 491{
398 AV *padlist; 492 AV *padlist;
399 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;
400 498
401 /* casting is fun. */ 499 /* casting is fun. */
402 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
403 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
404 502
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 504
407 return 0; 505 return 0;
408} 506}
409
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext
411#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 507
413static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 509 0, 0, 0, 0,
415 coro_cv_free 510 coro_cv_free
416}; 511};
417
418#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \
420 ? SvMAGIC (sv)->mg_type == type \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0
424
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
427
428INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro)
430{
431 HV *stash;
432 MAGIC *mg;
433
434 if (SvROK (coro))
435 coro = SvRV (coro);
436
437 if (expect_false (SvTYPE (coro) != SVt_PVHV))
438 croak ("Coro::State object required");
439
440 stash = SvSTASH (coro);
441 if (expect_false (stash != coro_stash && stash != coro_state_stash))
442 {
443 /* very slow, but rare, check */
444 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
445 croak ("Coro::State object required");
446 }
447
448 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr;
450}
451
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
453 512
454/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
455static void 514static void
456get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
457{ 516{
… …
463 else 522 else
464 { 523 {
465#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
472#else 531#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
474#endif 533#endif
475 } 534 }
476} 535}
477 536
478static void 537static void
… …
485 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);
486 545
487 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
488 547
489 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
490 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
491 550
492 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
493} 552}
494 553
495/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
496 558
497static void 559static void
498load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
499{ 561{
500 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
501 c->slot = 0; 563 c->slot = 0;
502 564
503 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
504 566
505 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
506 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
507 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
508 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
509 572
510 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
511 # include "state.h" 574 # include "state.h"
512 #undef VAR 575 #undef VAR
513 576
… …
525 } 588 }
526 589
527 PUTBACK; 590 PUTBACK;
528 } 591 }
529 592
530 slf_frame = c->slf_frame; 593 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 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 }
532} 611}
533 612
534static void 613static void
535save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
536{ 615{
537 c->slf_data = coroapi.slf_data; 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;
538 c->slf_frame = slf_frame; 633 c->slf_frame = slf_frame;
539 634
540 { 635 {
541 dSP; 636 dSP;
542 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
… …
554 { 649 {
555 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
556 { 651 {
557 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
558 653
559 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))
560 { 655 {
561 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
562 657
563 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
564 { 659 {
… …
588 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
589 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
590 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
591 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
592 { 687 {
593 int i; 688 unsigned int i;
594 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
595 CXINC; 690 CXINC;
596 } 691 }
597 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
598 693
599 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
600 695
601 { 696 {
602 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
603 698
604 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
605 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
606 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
607 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
608 704
609 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
610 # include "state.h" 706 # include "state.h"
611 #undef VAR 707 #undef VAR
612 } 708 }
… …
617 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
620 */ 716 */
621#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
623#else 719#else
624static void 720static void
625coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
626{ 722{
627 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 787 Safefree (PL_retstack);
692#endif 788#endif
693} 789}
694 790
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
695static size_t 800static size_t
696coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
697{ 802{
698 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
699 804
700 if (coro->mainstack) 805 if (coro->mainstack)
701 { 806 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
706 { 808 {
707 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
708 810 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 811 #undef SYM
712 } 812 }
713 else 813 else
714 slot = coro->slot;
715
716 if (slot)
717 { 814 {
718 rss += sizeof (slot->curstackinfo); 815 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 816 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 817 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 818 }
730 } 819 }
731 820
732 return rss; 821 return rss;
733} 822}
… …
746#endif 835#endif
747 836
748/* 837/*
749 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
750 * 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
751 * 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
752 * readback here. 841 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 842 */
757static int 843static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 845{
760 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 900
815 if (svp) 901 if (svp)
816 { 902 {
817 SV *old = *svp; 903 SV *old = *svp;
818 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
820 return 0; 906 return 0;
821 } 907 }
822 } 908 }
823 909
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 911}
826 912
827static void 913static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 914prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 915{
830 /* kind of mega-hacky, but works */ 916 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 917 ta->next = ta->prev = (struct coro *)ta;
832} 918}
833 919
834static int 920static int
835slf_check_nop (aTHX) 921slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 922{
837 return 0; 923 return 0;
838} 924}
839 925
840static 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 */
841coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
842{ 936{
843 /* 937 /*
844 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
845 */ 939 */
… …
847 941
848 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
849 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
850 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
851 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
852 PL_curpm = 0; 949 PL_curpm = 0;
853 PL_curpad = 0; 950 PL_curpad = 0;
854 PL_localizing = 0; 951 PL_localizing = 0;
855 PL_dirty = 0; 952 PL_dirty = 0;
856 PL_restartop = 0; 953 PL_restartop = 0;
857#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
858 PL_parser = 0; 955 PL_parser = 0;
859#endif 956#endif
957 PL_hints = 0;
860 958
861 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
862 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 );
863 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);
864 962
865 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
866 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
867 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
868 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;
869 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
870 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
871 970
872 { 971 {
873 dSP; 972 dSP;
874 UNOP myop; 973 UNOP myop;
875 974
876 Zero (&myop, 1, UNOP); 975 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
879 979
880 PUSHMARK (SP); 980 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 982 PUTBACK;
883 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 985 }
887 986
888 /* 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
889 * 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.
890 */ 989 */
891 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 */
892 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 */
893}
894 992
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
895static void 1011static void
896coro_destruct (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
897{ 1013{
898 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
899 { 1015 {
900 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
901 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
909 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
910 1026
911 /* unwind main stack */ 1027 /* unwind main stack */
912 dounwind (-1); 1028 dounwind (-1);
913 } 1029 }
1030}
914 1031
915 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
916 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
917 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
918 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
919 SvREFCNT_dec (PL_rs);
920 SvREFCNT_dec (GvSV (irsgv));
921 1036
922 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook);
924 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
925 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
927 1071 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
929} 1074}
930 1075
931INLINE void 1076INLINE void
932free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
933{ 1078{
… …
941static int 1086static int
942runops_trace (pTHX) 1087runops_trace (pTHX)
943{ 1088{
944 COP *oldcop = 0; 1089 COP *oldcop = 0;
945 int oldcxix = -2; 1090 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1091
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1093 {
951 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
952 1095
953 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1097 {
955 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)
956 { 1099 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1101 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
960 SV **cb; 1103 SV **cb;
… …
997 1140
998 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
999 { 1142 {
1000 SV **cb; 1143 SV **cb;
1001 1144
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1146 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1148
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1150 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1151 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
1012 1154
1013 if (isGV (gv)) 1155 if (isGV (gv))
… …
1018 SAVETMPS; 1160 SAVETMPS;
1019 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1162 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1164 PUSHs (fullname);
1023 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);
1024 PUTBACK; 1166 PUTBACK;
1025 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);
1026 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);
1027 SPAGAIN; 1169 SPAGAIN;
1028 FREETMPS; 1170 FREETMPS;
… …
1031 } 1173 }
1032 1174
1033 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
1034 } 1176 }
1035 1177
1036 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1179 {
1038 dSP; 1180 dSP;
1039 1181
1040 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1183 ENTER;
… …
1060 1202
1061 TAINT_NOT; 1203 TAINT_NOT;
1062 return 0; 1204 return 0;
1063} 1205}
1064 1206
1207static struct CoroSLF cctx_ssl_frame;
1208
1065static void 1209static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1211{
1068 ta->prev = (struct coro *)cctx;
1069 ta->next = 0; 1212 ta->prev = 0;
1070} 1213}
1071 1214
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1215static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1217{
1075/* 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 */
1076static void NOINLINE 1224static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1078{ 1226{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1083 1228
1084 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1086 1231
1087 Zero (&myop, 1, UNOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1089 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));
1090 1236
1091 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1239
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1095 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1096 PL_op = (OP *)&myop;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1242}
1100 1243
1101/* 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 */
1102INLINE void 1245INLINE void
1103transfer_tail (pTHX) 1246transfer_tail (pTHX)
1104{ 1247{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1248 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1249}
1121 1250
1122/* 1251/*
1123 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1253 */
… …
1136 /* normally we would need to skip the entersub here */ 1265 /* normally we would need to skip the entersub here */
1137 /* 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 */
1138 /* PL_nop = PL_nop->op_next */ 1267 /* PL_nop = PL_nop->op_next */
1139 1268
1140 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1142 1271
1143 /* cctx_run is the alternative tail of transfer() */ 1272 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1273 transfer_tail (aTHX);
1146 1274
1147 /* 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 */
1148 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1149 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 */
1150 1283
1151 /* 1284 /*
1152 * 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
1153 * 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)
1154 * 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
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1288 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * 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.
1157 */ 1292 */
1158 PL_top_env = main_top_env; 1293 PL_top_env = main_top_env;
1159 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 */
1160 } 1295 }
1161} 1296}
… …
1238cctx_destroy (coro_cctx *cctx) 1373cctx_destroy (coro_cctx *cctx)
1239{ 1374{
1240 if (!cctx) 1375 if (!cctx)
1241 return; 1376 return;
1242 1377
1378 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1379
1243 --cctx_count; 1380 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1381 coro_destroy (&cctx->cctx);
1245 1382
1246 /* coro_transfer creates new, empty cctx's */ 1383 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1384 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1442/** coroutine switching *****************************************************/
1306 1443
1307static void 1444static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1445transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1446{
1447 /* TODO: throwing up here is considered harmful */
1448
1310 if (expect_true (prev != next)) 1449 if (expect_true (prev != next))
1311 { 1450 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1451 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 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,");
1314 1453
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED)) 1454 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1319 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,");
1320 1456
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1457#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1458 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 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,");
1324#endif 1460#endif
1325 } 1461 }
1326} 1462}
1327 1463
1328/* always use the TRANSFER macro */ 1464/* always use the TRANSFER macro */
1329static void NOINLINE 1465static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1466transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1467{
1332 dSTACKLEVEL; 1468 dSTACKLEVEL;
1333 1469
1334 /* sometimes transfer is only called to set idle_sp */ 1470 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1471 if (expect_false (!prev))
1336 { 1472 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1473 cctx_current->idle_sp = STACKLEVEL;
1338 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 */
1339 } 1475 }
1340 else if (expect_true (prev != next)) 1476 else if (expect_true (prev != next))
1341 { 1477 {
1342 coro_cctx *prev__cctx; 1478 coro_cctx *cctx_prev;
1343 1479
1344 if (expect_false (prev->flags & CF_NEW)) 1480 if (expect_false (prev->flags & CF_NEW))
1345 { 1481 {
1346 /* create a new empty/source context */ 1482 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1483 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1484 prev->flags |= CF_RUNNING;
1350 } 1485 }
1351 1486
1352 prev->flags &= ~CF_RUNNING; 1487 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1488 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1489
1357 /* first get rid of the old state */ 1490 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1491 save_perl (aTHX_ prev);
1359 1492
1360 if (expect_false (next->flags & CF_NEW)) 1493 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1498 coro_setup (aTHX_ next);
1366 } 1499 }
1367 else 1500 else
1368 load_perl (aTHX_ next); 1501 load_perl (aTHX_ next);
1369 1502
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1503 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1504 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1505 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1506 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1507 && !force_cctx
1377 )) 1508 ))
1378 { 1509 {
1379 /* 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 */
1380 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));
1381 1512
1382 prev->cctx = 0;
1383
1384 /* 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. */
1385 /* 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 */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1515 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1516 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1517 next->cctx = cctx_get (aTHX);
1389 1518
1390 cctx_put (prev__cctx); 1519 cctx_put (cctx_current);
1391 } 1520 }
1521 else
1522 prev->cctx = cctx_current;
1392 1523
1393 ++next->usecount; 1524 ++next->usecount;
1394 1525
1395 if (expect_true (!next->cctx)) 1526 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1527 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1528
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1529 next->cctx = 0;
1399 transfer_next = next;
1400 1530
1401 if (expect_false (prev__cctx != next->cctx)) 1531 if (expect_false (cctx_prev != cctx_current))
1402 { 1532 {
1403 prev__cctx->top_env = PL_top_env; 1533 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1534 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1535 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1536 }
1407 1537
1408 transfer_tail (aTHX); 1538 transfer_tail (aTHX);
1409 } 1539 }
1410} 1540}
… …
1417static int 1547static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1548coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1549{
1420 if (coro->flags & CF_DESTROYED) 1550 if (coro->flags & CF_DESTROYED)
1421 return 0; 1551 return 0;
1552
1553 if (coro->on_destroy && !PL_dirty)
1554 coro->on_destroy (aTHX_ coro);
1422 1555
1423 coro->flags |= CF_DESTROYED; 1556 coro->flags |= CF_DESTROYED;
1424 1557
1425 if (coro->flags & CF_READY) 1558 if (coro->flags & CF_READY)
1426 { 1559 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1560 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1561 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1562 --coro_nready;
1431 UNLOCK;
1432 } 1563 }
1433 else 1564 else
1434 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 */
1435 1566
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1567 if (coro->mainstack
1437 { 1568 && coro->mainstack != main_mainstack
1438 struct coro temp; 1569 && coro->slot
1439 1570 && !PL_dirty)
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro); 1571 coro_destruct_perl (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1572
1453 cctx_destroy (coro->cctx); 1573 cctx_destroy (coro->cctx);
1574 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1575 SvREFCNT_dec (coro->args);
1576 SvREFCNT_dec (CORO_THROW);
1455 1577
1456 if (coro->next) coro->next->prev = coro->prev; 1578 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1579 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1580 if (coro == coro_first) coro_first = coro->next;
1459 1581
… …
1515 TRANSFER (ta, 1); 1637 TRANSFER (ta, 1);
1516} 1638}
1517 1639
1518/** Coro ********************************************************************/ 1640/** Coro ********************************************************************/
1519 1641
1520static void 1642INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1643coro_enq (pTHX_ struct coro *coro)
1522{ 1644{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1646
1526static 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 *
1527coro_deq (pTHX) 1655coro_deq (pTHX)
1528{ 1656{
1529 int prio; 1657 int prio;
1530 1658
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1660 {
1533 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 }
1534 1670
1535 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;
1536} 1689}
1537 1690
1538static int 1691static int
1539api_ready (pTHX_ SV *coro_sv) 1692api_ready (pTHX_ SV *coro_sv)
1540{ 1693{
1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1544
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1694 struct coro *coro = SvSTATE (coro_sv);
1549 1695
1550 if (coro->flags & CF_READY) 1696 if (coro->flags & CF_READY)
1551 return 0; 1697 return 0;
1552 1698
1553 coro->flags |= CF_READY; 1699 coro->flags |= CF_READY;
1554 1700
1555 LOCK; 1701 coro_enq (aTHX_ coro);
1556 1702
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1703 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1704 if (coroapi.readyhook)
1559 1705 coroapi.readyhook ();
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1561 ++coro_nready;
1562
1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1583 1706
1584 return 1; 1707 return 1;
1585} 1708}
1586 1709
1587static int 1710static int
1588api_is_ready (pTHX_ SV *coro_sv) 1711api_is_ready (pTHX_ SV *coro_sv)
1589{ 1712{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1713 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1714}
1592 1715
1716/* expects to own a reference to next->hv */
1593INLINE void 1717INLINE void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1718prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1719{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1720 SV *prev_sv = SvRV (coro_current);
1721
1640 ta->prev = SvSTATE (prev_sv); 1722 ta->prev = SvSTATE_hv (prev_sv);
1723 ta->next = next;
1724
1641 TRANSFER_CHECK (*ta); 1725 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1726
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1727 SvRV_set (coro_current, (SV *)next->hv);
1645 1728
1646 LOCK;
1647 free_coro_mortal (aTHX); 1729 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1730 coro_mortal = prev_sv;
1649 UNLOCK; 1731}
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 }
1650} 1780}
1651 1781
1652INLINE void 1782INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1783prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1784{
… …
1675{ 1805{
1676 struct coro_transfer_args ta; 1806 struct coro_transfer_args ta;
1677 1807
1678 prepare_schedule (aTHX_ &ta); 1808 prepare_schedule (aTHX_ &ta);
1679 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);
1680} 1820}
1681 1821
1682static int 1822static int
1683api_cede (pTHX) 1823api_cede (pTHX)
1684{ 1824{
… …
1713static void 1853static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1854api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1855{
1716 struct coro *coro = SvSTATE (coro_sv); 1856 struct coro *coro = SvSTATE (coro_sv);
1717 1857
1858 if (coro->flags & CF_RUNNING)
1859 croak ("cannot enable tracing on a running coroutine, caught");
1860
1718 if (flags & CC_TRACE) 1861 if (flags & CC_TRACE)
1719 { 1862 {
1720 if (!coro->cctx) 1863 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1864 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1865 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1866 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1867
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1868 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1869 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1870 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1871 {
… …
1733 else 1876 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1877 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1878 }
1736} 1879}
1737 1880
1738#if 0 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 /* items are actually not so common, so optimise for this case */
1922 if (items)
1923 {
1924 av_extend (av, items - 1);
1925
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 }
1929
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1931
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager);
1934
1935 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat;
1937
1938 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/
1941}
1942
1943/*****************************************************************************/
1944/* async pool handler */
1945
1739static int 1946static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1948{
1742 AV *padlist; 1949 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1950 struct coro *coro = (struct coro *)frame->data;
1744 1951
1745 abort (); 1952 if (!coro->invoke_cb)
1953 return 1; /* loop till we have invoke */
1954 else
1955 {
1956 hv_store (hv, "desc", sizeof ("desc") - 1,
1957 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1958
1959 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1960
1961 {
1962 dSP;
1963 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1964 PUTBACK;
1965 }
1966
1967 SvREFCNT_dec (GvAV (PL_defgv));
1968 GvAV (PL_defgv) = coro->invoke_av;
1969 coro->invoke_av = 0;
1970
1971 return 0;
1972 }
1973}
1974
1975static void
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{
1978 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980
1981 if (expect_true (coro->saved_deffh))
1982 {
1983 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0;
1986
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1991 coro->invoke_av = newAV ();
1992
1993 frame->prepare = prepare_nop;
1994 }
1995 else
1996 {
1997 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999
2000 coro->prio = 0;
2001
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0);
2004
2005 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 }
2008 }
2009 else
2010 {
2011 /* first iteration, simply fall through */
2012 frame->prepare = prepare_nop;
2013 }
2014
2015 frame->check = slf_check_pool_handler;
2016 frame->data = (void *)coro;
2017}
2018
2019/*****************************************************************************/
2020/* rouse callback */
2021
2022#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2023
2024static void
2025coro_rouse_callback (pTHX_ CV *cv)
2026{
2027 dXSARGS;
2028 SV *data = (SV *)S_GENSUB_ARG;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 {
2032 /* first call, set args */
2033 SV *coro = SvRV (data);
2034 AV *av = newAV ();
2035
2036 SvRV_set (data, (SV *)av);
2037
2038 /* better take a full copy of the arguments */
2039 while (items--)
2040 av_store (av, items, newSVsv (ST (items)));
2041
2042 api_ready (aTHX_ coro);
2043 SvREFCNT_dec (coro);
2044 }
2045
2046 XSRETURN_EMPTY;
2047}
2048
2049static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{
2052 SV *data = (SV *)frame->data;
2053
2054 if (CORO_THROW)
2055 return 0;
2056
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1;
2059
2060 /* now push all results on the stack */
2061 {
2062 dSP;
2063 AV *av = (AV *)SvRV (data);
2064 int i;
2065
2066 EXTEND (SP, AvFILLp (av) + 1);
2067 for (i = 0; i <= AvFILLp (av); ++i)
2068 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2069
2070 /* we have stolen the elements, so set length to zero and free */
2071 AvFILLp (av) = -1;
2072 av_undef (av);
2073
2074 PUTBACK;
2075 }
1746 2076
1747 return 0; 2077 return 0;
1748} 2078}
1749 2079
1750static MGVTBL coro_gensub_vtbl = { 2080static void
1751 0, 0, 0, 0, 2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2082{
1753}; 2083 SV *cb;
1754#endif 2084
2085 if (items)
2086 cb = arg [0];
2087 else
2088 {
2089 struct coro *coro = SvSTATE_current;
2090
2091 if (!coro->rouse_cb)
2092 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2093
2094 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0;
2096 }
2097
2098 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,");
2102
2103 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2105 SV *data = (SV *)S_GENSUB_ARG;
2106
2107 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait;
2110 }
2111}
2112
2113static SV *
2114coro_new_rouse_cb (pTHX)
2115{
2116 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2120
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */
2123
2124 SvREFCNT_dec (coro->rouse_cb);
2125 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2126
2127 return cb;
2128}
2129
2130/*****************************************************************************/
2131/* schedule-like-function opcode (SLF) */
2132
2133static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2134static const CV *slf_cv;
2135static SV **slf_argv;
2136static int slf_argc, slf_arga; /* count, allocated */
2137static I32 slf_ax; /* top of stack, for restore */
2138
2139/* this restores the stack in the case we patched the entersub, to */
2140/* recreate the stack frame as perl will on following calls */
2141/* since entersub cleared the stack */
2142static OP *
2143pp_restore (pTHX)
2144{
2145 int i;
2146 SV **SP = PL_stack_base + slf_ax;
2147
2148 PUSHMARK (SP);
2149
2150 EXTEND (SP, slf_argc + 1);
2151
2152 for (i = 0; i < slf_argc; ++i)
2153 PUSHs (sv_2mortal (slf_argv [i]));
2154
2155 PUSHs ((SV *)CvGV (slf_cv));
2156
2157 RETURNOP (slf_restore.op_first);
2158}
2159
2160static void
2161slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2162{
2163 SV **arg = (SV **)slf_frame.data;
2164
2165 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2166}
2167
2168static void
2169slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (items != 2)
2172 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2173
2174 frame->prepare = slf_prepare_transfer;
2175 frame->check = slf_check_nop;
2176 frame->data = (void *)arg; /* let's hope it will stay valid */
2177}
2178
2179static void
2180slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 frame->prepare = prepare_schedule;
2183 frame->check = slf_check_nop;
2184}
2185
2186static void
2187slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2188{
2189 struct coro *next = (struct coro *)slf_frame.data;
2190
2191 SvREFCNT_inc_NN (next->hv);
2192 prepare_schedule_to (aTHX_ ta, next);
2193}
2194
2195static void
2196slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 if (!items)
2199 croak ("Coro::schedule_to expects a coroutine argument, caught");
2200
2201 frame->data = (void *)SvSTATE (arg [0]);
2202 frame->prepare = slf_prepare_schedule_to;
2203 frame->check = slf_check_nop;
2204}
2205
2206static void
2207slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2208{
2209 api_ready (aTHX_ SvRV (coro_current));
2210
2211 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2212}
2213
2214static void
2215slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 frame->prepare = prepare_cede;
2218 frame->check = slf_check_nop;
2219}
2220
2221static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop;
2226}
2227
2228/*
2229 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same
2231 * stack offset
2232 * SLF stands for "schedule-like-function".
2233 */
2234static OP *
2235pp_slf (pTHX)
2236{
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238
2239 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare))
2243 {
2244 /* first iteration */
2245 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */
2248 SV *gv = *sp;
2249
2250 /* do a quick consistency check on the "function" object, and if it isn't */
2251 /* for us, divert to the real entersub */
2252 if (SvTYPE (gv) != SVt_PVGV
2253 || !GvCV (gv)
2254 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2255 return PL_ppaddr[OP_ENTERSUB](aTHX);
2256
2257 if (!(PL_op->op_flags & OPf_STACKED))
2258 {
2259 /* ampersand-form of call, use @_ instead of stack */
2260 AV *av = GvAV (PL_defgv);
2261 arg = AvARRAY (av);
2262 items = AvFILLp (av) + 1;
2263 }
2264
2265 /* now call the init function, which needs to set up slf_frame */
2266 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2267 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2268
2269 /* pop args */
2270 SP = PL_stack_base + POPMARK;
2271
2272 PUTBACK;
2273 }
2274
2275 /* now that we have a slf_frame, interpret it! */
2276 /* we use a callback system not to make the code needlessly */
2277 /* complicated, but so we can run multiple perl coros from one cctx */
2278
2279 do
2280 {
2281 struct coro_transfer_args ta;
2282
2283 slf_frame.prepare (aTHX_ &ta);
2284 TRANSFER (ta, 0);
2285
2286 checkmark = PL_stack_sp - PL_stack_base;
2287 }
2288 while (slf_frame.check (aTHX_ &slf_frame));
2289
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291
2292 /* exception handling */
2293 if (expect_false (CORO_THROW))
2294 {
2295 SV *exception = sv_2mortal (CORO_THROW);
2296
2297 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception);
2299 croak (0);
2300 }
2301
2302 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR)
2305 {
2306 dSP;
2307 SV **bot = PL_stack_base + checkmark;
2308
2309 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */
2312 bot [1] = *sp;
2313
2314 SP = bot + 1;
2315
2316 PUTBACK;
2317 }
2318
2319 return NORMAL;
2320}
2321
2322static void
2323api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2324{
2325 int i;
2326 SV **arg = PL_stack_base + ax;
2327 int items = PL_stack_sp - arg + 1;
2328
2329 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2330
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334
2335 CvFLAGS (cv) |= CVf_SLF;
2336 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2337 slf_cv = cv;
2338
2339 /* we patch the op, and then re-run the whole call */
2340 /* we have to put the same argument on the stack for this to work */
2341 /* and this will be done by pp_restore */
2342 slf_restore.op_next = (OP *)&slf_restore;
2343 slf_restore.op_type = OP_CUSTOM;
2344 slf_restore.op_ppaddr = pp_restore;
2345 slf_restore.op_first = PL_op;
2346
2347 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2348
2349 if (PL_op->op_flags & OPf_STACKED)
2350 {
2351 if (items > slf_arga)
2352 {
2353 slf_arga = items;
2354 free (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *));
2356 }
2357
2358 slf_argc = items;
2359
2360 for (i = 0; i < items; ++i)
2361 slf_argv [i] = SvREFCNT_inc (arg [i]);
2362 }
2363 else
2364 slf_argc = 0;
2365
2366 PL_op->op_ppaddr = pp_slf;
2367 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2368
2369 PL_op = (OP *)&slf_restore;
2370}
2371
2372/*****************************************************************************/
2373/* dynamic wind */
2374
2375static void
2376on_enterleave_call (pTHX_ SV *cb)
2377{
2378 dSP;
2379
2380 PUSHSTACK;
2381
2382 PUSHMARK (SP);
2383 PUTBACK;
2384 call_sv (cb, G_VOID | G_DISCARD);
2385 SPAGAIN;
2386
2387 POPSTACK;
2388}
2389
2390static SV *
2391coro_avp_pop_and_free (pTHX_ AV **avp)
2392{
2393 AV *av = *avp;
2394 SV *res = av_pop (av);
2395
2396 if (AvFILLp (av) < 0)
2397 {
2398 *avp = 0;
2399 SvREFCNT_dec (av);
2400 }
2401
2402 return res;
2403}
2404
2405static void
2406coro_pop_on_enter (pTHX_ void *coro)
2407{
2408 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2409 SvREFCNT_dec (cb);
2410}
2411
2412static void
2413coro_pop_on_leave (pTHX_ void *coro)
2414{
2415 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2416 on_enterleave_call (aTHX_ sv_2mortal (cb));
2417}
1755 2418
1756/*****************************************************************************/ 2419/*****************************************************************************/
1757/* PerlIO::cede */ 2420/* PerlIO::cede */
1758 2421
1759typedef struct 2422typedef struct
… …
1827 PerlIOBuf_get_cnt, 2490 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2491 PerlIOBuf_set_ptrcnt,
1829}; 2492};
1830 2493
1831/*****************************************************************************/ 2494/*****************************************************************************/
2495/* Coro::Semaphore & Coro::Signal */
1832 2496
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2497static SV *
1843pp_restore (pTHX) 2498coro_waitarray_new (pTHX_ int count)
1844{ 2499{
1845 dSP; 2500 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2501 AV *av = newAV ();
2502 SV **ary;
1846 2503
1847 PUSHMARK (SP); 2504 /* unfortunately, building manually saves memory */
2505 Newx (ary, 2, SV *);
2506 AvALLOC (av) = ary;
2507#if PERL_VERSION_ATLEAST (5,10,0)
2508 AvARRAY (av) = ary;
2509#else
2510 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2511 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2512 SvPVX ((SV *)av) = (char *)ary;
2513#endif
2514 AvMAX (av) = 1;
2515 AvFILLp (av) = 0;
2516 ary [0] = newSViv (count);
1848 2517
1849 EXTEND (SP, 3); 2518 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2519}
1856 2520
1857static void 2521/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2522
1864static void 2523static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2524coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2525{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2526 SV *count_sv = AvARRAY (av)[0];
1868} 2527 IV count = SvIVX (count_sv);
1869 2528
1870static void 2529 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2530 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2531
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2532 /* now wake up as many waiters as are expected to lock */
1877} 2533 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2534 {
1912 /* first iteration */ 2535 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2536
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2537 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2538 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2539 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2540 cb = av_shift (av);
1923 2541
1924 /* pop args */ 2542 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2543 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2544 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2545 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2546 }
1934 2547 else if (SvTYPE (cb) == SVt_PVCV)
2548 {
2549 dSP;
2550 PUSHMARK (SP);
2551 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2552 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2554 }
1936 2555
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2556 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2557 }
1949 struct coro_transfer_args ta; 2558}
1950 2559
1951 slf_frame.prepare (aTHX_ &ta); 2560static void
1952 TRANSFER (ta, 0); 2561coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2562{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2565}
1953 2566
1954 checkmark = PL_stack_sp - PL_stack_base; 2567static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{
2570 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0];
2572
2573 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW)
2575 return 0;
2576 else if (SvIVX (count_sv) > 0)
1955 } 2577 {
1956 while (slf_frame.check (aTHX)); 2578 SvSTATE_current->on_destroy = 0;
1957 2579
2580 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else
2583 coro_semaphore_adjust (aTHX_ av, 0);
2584
2585 return 0;
2586 }
2587 else
2588 {
2589 int i;
2590 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */
2593
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current))
2596 return 1;
2597
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2599 return 1;
2600 }
2601}
2602
2603static int
2604slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2607}
2608
2609static int
2610slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2611{
2612 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2613}
2614
2615static void
2616slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2617{
2618 AV *av = (AV *)SvRV (arg [0]);
2619
2620 if (SvIVX (AvARRAY (av)[0]) > 0)
2621 {
2622 frame->data = (void *)av;
2623 frame->prepare = prepare_nop;
2624 }
2625 else
2626 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2635 }
2636}
2637
2638static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2640{
2641 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2642 frame->check = slf_check_semaphore_down;
2643}
2644
2645static void
2646slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2647{
2648 if (items >= 2)
2649 {
2650 /* callback form */
2651 AV *av = (AV *)SvRV (arg [0]);
2652 SV *cb_cv = s_get_cv_croak (arg [1]);
2653
2654 av_push (av, SvREFCNT_inc_NN (cb_cv));
2655
2656 if (SvIVX (AvARRAY (av)[0]) > 0)
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 frame->prepare = prepare_nop;
2660 frame->check = slf_check_nop;
2661 }
2662 else
2663 {
2664 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2665 frame->check = slf_check_semaphore_wait;
2666 }
2667}
2668
2669/* signal */
2670
2671static void
2672coro_signal_wake (pTHX_ AV *av, int count)
2673{
2674 SvIVX (AvARRAY (av)[0]) = 0;
2675
2676 /* now signal count waiters */
2677 while (count > 0 && AvFILLp (av) > 0)
2678 {
2679 SV *cb;
2680
2681 /* swap first two elements so we can shift a waiter */
2682 cb = AvARRAY (av)[0];
2683 AvARRAY (av)[0] = AvARRAY (av)[1];
2684 AvARRAY (av)[1] = cb;
2685
2686 cb = av_shift (av);
2687
2688 if (SvTYPE (cb) == SVt_PVCV)
2689 {
2690 dSP;
2691 PUSHMARK (SP);
2692 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2693 PUTBACK;
2694 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2695 }
2696 else
2697 {
2698 api_ready (aTHX_ cb);
2699 sv_setiv (cb, 0); /* signal waiter */
2700 }
2701
2702 SvREFCNT_dec (cb);
2703
2704 --count;
2705 }
2706}
2707
2708static int
2709slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2710{
2711 /* if we are about to throw, also stop waiting */
2712 return SvROK ((SV *)frame->data) && !CORO_THROW;
2713}
2714
2715static void
2716slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2717{
2718 AV *av = (AV *)SvRV (arg [0]);
2719
2720 if (items >= 2)
2721 {
2722 SV *cb_cv = s_get_cv_croak (arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else if (SvIVX (AvARRAY (av)[0]))
2732 {
2733 SvIVX (AvARRAY (av)[0]) = 0;
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2740
2741 av_push (av, waiter);
2742
2743 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2744 frame->prepare = prepare_schedule;
2745 frame->check = slf_check_signal_wait;
2746 }
2747}
2748
2749/*****************************************************************************/
2750/* Coro::AIO */
2751
2752#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2753
2754/* helper storage struct */
2755struct io_state
2756{
2757 int errorno;
2758 I32 laststype; /* U16 in 5.10.0 */
2759 int laststatval;
2760 Stat_t statcache;
2761};
2762
2763static void
2764coro_aio_callback (pTHX_ CV *cv)
2765{
2766 dXSARGS;
2767 AV *state = (AV *)S_GENSUB_ARG;
2768 SV *coro = av_pop (state);
2769 SV *data_sv = newSV (sizeof (struct io_state));
2770
2771 av_extend (state, items - 1);
2772
2773 sv_upgrade (data_sv, SVt_PV);
2774 SvCUR_set (data_sv, sizeof (struct io_state));
2775 SvPOK_only (data_sv);
2776
2777 {
2778 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2779
2780 data->errorno = errno;
2781 data->laststype = PL_laststype;
2782 data->laststatval = PL_laststatval;
2783 data->statcache = PL_statcache;
2784 }
2785
2786 /* now build the result vector out of all the parameters and the data_sv */
2787 {
2788 int i;
2789
2790 for (i = 0; i < items; ++i)
2791 av_push (state, SvREFCNT_inc_NN (ST (i)));
2792 }
2793
2794 av_push (state, data_sv);
2795
2796 api_ready (aTHX_ coro);
2797 SvREFCNT_dec (coro);
2798 SvREFCNT_dec ((AV *)state);
2799}
2800
2801static int
2802slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2803{
2804 AV *state = (AV *)frame->data;
2805
2806 /* if we are about to throw, return early */
2807 /* this does not cancel the aio request, but at least */
2808 /* it quickly returns */
2809 if (CORO_THROW)
2810 return 0;
2811
2812 /* one element that is an RV? repeat! */
2813 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2814 return 1;
2815
2816 /* restore status */
2817 {
2818 SV *data_sv = av_pop (state);
2819 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2820
2821 errno = data->errorno;
2822 PL_laststype = data->laststype;
2823 PL_laststatval = data->laststatval;
2824 PL_statcache = data->statcache;
2825
2826 SvREFCNT_dec (data_sv);
2827 }
2828
2829 /* push result values */
1958 { 2830 {
1959 dSP; 2831 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2832 int i;
1961 int gimme = GIMME_V;
1962 2833
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2834 EXTEND (SP, AvFILLp (state) + 1);
1964 2835 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2836 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2837
1974 PUTBACK; 2838 PUTBACK;
1975 } 2839 }
1976 2840
1977 return NORMAL; 2841 return 0;
1978} 2842}
1979 2843
1980static void 2844static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2845slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2846{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2847 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2848 SV *coro_hv = SvRV (coro_current);
2849 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2850
1986 if (items > 2) 2851 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2852 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2853
1989 CvFLAGS (cv) |= CVf_SLF; 2854 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2855 if (coro->prio)
1991 slf_cv = cv; 2856 {
2857 dSP;
1992 2858
1993 /* we patch the op, and then re-run the whole call */ 2859 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2860 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2861
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2862 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2863 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0);
2866 }
2003 2867
2004 PL_op->op_ppaddr = pp_slf; 2868 PUSHMARK (SP);
2869 sv_setiv (prio_sv, coro->prio);
2870 XPUSHs (prio_sv);
2005 2871
2006 PL_op = (OP *)&slf_restore; 2872 PUTBACK;
2873 call_sv (prio_cv, G_VOID | G_DISCARD);
2874 }
2875
2876 /* now call the original request */
2877 {
2878 dSP;
2879 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2880 int i;
2881
2882 PUSHMARK (SP);
2883
2884 /* first push all args to the stack */
2885 EXTEND (SP, items + 1);
2886
2887 for (i = 0; i < items; ++i)
2888 PUSHs (arg [i]);
2889
2890 /* now push the callback closure */
2891 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2892
2893 /* now call the AIO function - we assume our request is uncancelable */
2894 PUTBACK;
2895 call_sv ((SV *)req, G_VOID | G_DISCARD);
2896 }
2897
2898 /* now that the requets is going, we loop toll we have a result */
2899 frame->data = (void *)state;
2900 frame->prepare = prepare_schedule;
2901 frame->check = slf_check_aio_req;
2902}
2903
2904static void
2905coro_aio_req_xs (pTHX_ CV *cv)
2906{
2907 dXSARGS;
2908
2909 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2910
2911 XSRETURN_EMPTY;
2912}
2913
2914/*****************************************************************************/
2915
2916#if CORO_CLONE
2917# include "clone.c"
2918#endif
2919
2920/*****************************************************************************/
2921
2922static SV *
2923coro_new (HV *stash, SV **argv, int argc, int is_coro)
2924{
2925 SV *coro_sv;
2926 struct coro *coro;
2927 MAGIC *mg;
2928 HV *hv;
2929 SV *cb;
2930 int i;
2931
2932 if (argc > 0)
2933 {
2934 cb = s_get_cv_croak (argv [0]);
2935
2936 if (!is_coro)
2937 {
2938 if (CvISXSUB (cb))
2939 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2940
2941 if (!CvROOT (cb))
2942 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2943 }
2944 }
2945
2946 Newz (0, coro, 1, struct coro);
2947 coro->args = newAV ();
2948 coro->flags = CF_NEW;
2949
2950 if (coro_first) coro_first->prev = coro;
2951 coro->next = coro_first;
2952 coro_first = coro;
2953
2954 coro->hv = hv = newHV ();
2955 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2956 mg->mg_flags |= MGf_DUP;
2957 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2958
2959 if (argc > 0)
2960 {
2961 av_extend (coro->args, argc + is_coro - 1);
2962
2963 if (is_coro)
2964 {
2965 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2966 cb = (SV *)cv_coro_run;
2967 }
2968
2969 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2970
2971 for (i = 1; i < argc; i++)
2972 av_push (coro->args, newSVsv (argv [i]));
2973 }
2974
2975 return coro_sv;
2007} 2976}
2008 2977
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2978MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 2979
2011PROTOTYPES: DISABLE 2980PROTOTYPES: DISABLE
2012 2981
2013BOOT: 2982BOOT:
2014{ 2983{
2015#ifdef USE_ITHREADS 2984#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 2985# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 2986 coro_thx = PERL_GET_CONTEXT;
2019# endif 2987# endif
2020#endif 2988#endif
2021 BOOT_PAGESIZE; 2989 BOOT_PAGESIZE;
2022 2990
2991 cctx_current = cctx_new_empty ();
2992
2023 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2993 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2024 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2994 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2025 2995
2026 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2996 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2027 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2997 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2042 main_top_env = PL_top_env; 3012 main_top_env = PL_top_env;
2043 3013
2044 while (main_top_env->je_prev) 3014 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 3015 main_top_env = main_top_env->je_prev;
2046 3016
3017 {
3018 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3019
3020 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3021 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3022
3023 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3024 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3025 }
3026
2047 coroapi.ver = CORO_API_VERSION; 3027 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 3028 coroapi.rev = CORO_API_REVISION;
3029
2049 coroapi.transfer = api_transfer; 3030 coroapi.transfer = api_transfer;
3031
3032 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 3033 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 3034 coroapi.prepare_nop = prepare_nop;
3035 coroapi.prepare_schedule = prepare_schedule;
3036 coroapi.prepare_cede = prepare_cede;
3037 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 3038
2053 { 3039 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3040 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 3041
2056 if (!svp) croak ("Time::HiRes is required"); 3042 if (!svp) croak ("Time::HiRes is required");
2057 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3043 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2058 3044
2059 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3045 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3046
3047 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3048 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2060 } 3049 }
2061 3050
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3051 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2063} 3052}
2064 3053
2065SV * 3054SV *
2066new (char *klass, ...) 3055new (SV *klass, ...)
3056 ALIAS:
3057 Coro::new = 1
2067 CODE: 3058 CODE:
2068{ 3059 RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2069 struct coro *coro; 3060 OUTPUT:
2070 MAGIC *mg;
2071 HV *hv;
2072 int i;
2073
2074 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV ();
2076 coro->flags = CF_NEW;
2077
2078 if (coro_first) coro_first->prev = coro;
2079 coro->next = coro_first;
2080 coro_first = coro;
2081
2082 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086
2087 av_extend (coro->args, items - 1);
2088 for (i = 1; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i)));
2090}
2091 OUTPUT:
2092 RETVAL 3061 RETVAL
2093
2094void
2095_set_stacklevel (...)
2096 CODE:
2097{
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101 3062
2102void 3063void
2103transfer (...) 3064transfer (...)
3065 PROTOTYPE: $$
2104 CODE: 3066 CODE:
2105{ 3067 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 3068
2110bool 3069bool
2111_destroy (SV *coro_sv) 3070_destroy (SV *coro_sv)
2112 CODE: 3071 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3072 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2118_exit (int code) 3077_exit (int code)
2119 PROTOTYPE: $ 3078 PROTOTYPE: $
2120 CODE: 3079 CODE:
2121 _exit (code); 3080 _exit (code);
2122 3081
3082SV *
3083clone (Coro::State coro)
3084 CODE:
3085{
3086#if CORO_CLONE
3087 struct coro *ncoro = coro_clone (aTHX_ coro);
3088 MAGIC *mg;
3089 /* TODO: too much duplication */
3090 ncoro->hv = newHV ();
3091 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3092 mg->mg_flags |= MGf_DUP;
3093 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3094#else
3095 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3096#endif
3097}
3098 OUTPUT:
3099 RETVAL
3100
2123int 3101int
2124cctx_stacksize (int new_stacksize = 0) 3102cctx_stacksize (int new_stacksize = 0)
3103 PROTOTYPE: ;$
2125 CODE: 3104 CODE:
2126 RETVAL = cctx_stacksize; 3105 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 3106 if (new_stacksize)
2128 { 3107 {
2129 cctx_stacksize = new_stacksize; 3108 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 3111 OUTPUT:
2133 RETVAL 3112 RETVAL
2134 3113
2135int 3114int
2136cctx_max_idle (int max_idle = 0) 3115cctx_max_idle (int max_idle = 0)
3116 PROTOTYPE: ;$
2137 CODE: 3117 CODE:
2138 RETVAL = cctx_max_idle; 3118 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 3119 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 3120 cctx_max_idle = max_idle;
2141 OUTPUT: 3121 OUTPUT:
2142 RETVAL 3122 RETVAL
2143 3123
2144int 3124int
2145cctx_count () 3125cctx_count ()
3126 PROTOTYPE:
2146 CODE: 3127 CODE:
2147 RETVAL = cctx_count; 3128 RETVAL = cctx_count;
2148 OUTPUT: 3129 OUTPUT:
2149 RETVAL 3130 RETVAL
2150 3131
2151int 3132int
2152cctx_idle () 3133cctx_idle ()
3134 PROTOTYPE:
2153 CODE: 3135 CODE:
2154 RETVAL = cctx_idle; 3136 RETVAL = cctx_idle;
2155 OUTPUT: 3137 OUTPUT:
2156 RETVAL 3138 RETVAL
2157 3139
2158void 3140void
2159list () 3141list ()
3142 PROTOTYPE:
2160 PPCODE: 3143 PPCODE:
2161{ 3144{
2162 struct coro *coro; 3145 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 3146 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 3147 if (coro->hv)
… …
2171 eval = 1 3154 eval = 1
2172 CODE: 3155 CODE:
2173{ 3156{
2174 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3157 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2175 { 3158 {
2176 struct coro temp; 3159 struct coro *current = SvSTATE_current;
2177 3160
2178 if (!(coro->flags & CF_RUNNING)) 3161 if (current != coro)
2179 { 3162 {
2180 PUTBACK; 3163 PUTBACK;
2181 save_perl (aTHX_ &temp); 3164 save_perl (aTHX_ current);
2182 load_perl (aTHX_ coro); 3165 load_perl (aTHX_ coro);
3166 SPAGAIN;
2183 } 3167 }
2184 3168
2185 {
2186 dSP;
2187 ENTER;
2188 SAVETMPS;
2189 PUTBACK;
2190 PUSHSTACK; 3169 PUSHSTACK;
3170
2191 PUSHMARK (SP); 3171 PUSHMARK (SP);
3172 PUTBACK;
2192 3173
2193 if (ix) 3174 if (ix)
2194 eval_sv (coderef, 0); 3175 eval_sv (coderef, 0);
2195 else 3176 else
2196 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3177 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2197 3178
2198 POPSTACK; 3179 POPSTACK;
2199 SPAGAIN; 3180 SPAGAIN;
2200 FREETMPS;
2201 LEAVE;
2202 PUTBACK;
2203 }
2204 3181
2205 if (!(coro->flags & CF_RUNNING)) 3182 if (current != coro)
2206 { 3183 {
3184 PUTBACK;
2207 save_perl (aTHX_ coro); 3185 save_perl (aTHX_ coro);
2208 load_perl (aTHX_ &temp); 3186 load_perl (aTHX_ current);
2209 SPAGAIN; 3187 SPAGAIN;
2210 } 3188 }
2211 } 3189 }
2212} 3190}
2213 3191
… …
2217 ALIAS: 3195 ALIAS:
2218 is_ready = CF_READY 3196 is_ready = CF_READY
2219 is_running = CF_RUNNING 3197 is_running = CF_RUNNING
2220 is_new = CF_NEW 3198 is_new = CF_NEW
2221 is_destroyed = CF_DESTROYED 3199 is_destroyed = CF_DESTROYED
3200 is_suspended = CF_SUSPENDED
2222 CODE: 3201 CODE:
2223 RETVAL = boolSV (coro->flags & ix); 3202 RETVAL = boolSV (coro->flags & ix);
2224 OUTPUT: 3203 OUTPUT:
2225 RETVAL 3204 RETVAL
2226 3205
2227void 3206void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 3207throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 3208 PROTOTYPE: $;$
2230 CODE: 3209 CODE:
3210{
3211 struct coro *current = SvSTATE_current;
3212 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 3213 SvREFCNT_dec (*throwp);
3214 SvGETMAGIC (throw);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3215 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3216}
2233 3217
2234void 3218void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3219api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3220 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3221 C_ARGS: aTHX_ coro, flags
2237 3222
2238SV * 3223SV *
2239has_cctx (Coro::State coro) 3224has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3225 PROTOTYPE: $
2241 CODE: 3226 CODE:
2242 RETVAL = boolSV (!!coro->cctx); 3227 /* maybe manage the running flag differently */
3228 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2243 OUTPUT: 3229 OUTPUT:
2244 RETVAL 3230 RETVAL
2245 3231
2246int 3232int
2247is_traced (Coro::State coro) 3233is_traced (Coro::State coro)
… …
2265 OUTPUT: 3251 OUTPUT:
2266 RETVAL 3252 RETVAL
2267 3253
2268void 3254void
2269force_cctx () 3255force_cctx ()
3256 PROTOTYPE:
2270 CODE: 3257 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3258 cctx_current->idle_sp = 0;
2273 3259
2274void 3260void
2275swap_defsv (Coro::State self) 3261swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3262 PROTOTYPE: $
2277 ALIAS: 3263 ALIAS:
2278 swap_defav = 1 3264 swap_defav = 1
2279 CODE: 3265 CODE:
2280 if (!self->slot) 3266 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3267 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3268 else
2283 { 3269 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3270 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3271 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3272
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3273 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3274 }
2289 3275
3276void
3277cancel (Coro::State self)
3278 CODE:
3279 coro_state_destroy (aTHX_ self);
3280 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3281
3282
3283SV *
3284enable_times (int enabled = enable_times)
3285 CODE:
3286{
3287 RETVAL = boolSV (enable_times);
3288
3289 if (enabled != enable_times)
3290 {
3291 enable_times = enabled;
3292
3293 coro_times_update ();
3294 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3295 }
3296}
3297 OUTPUT:
3298 RETVAL
3299
3300void
3301times (Coro::State self)
3302 PPCODE:
3303{
3304 struct coro *current = SvSTATE (coro_current);
3305
3306 if (expect_false (current == self))
3307 {
3308 coro_times_update ();
3309 coro_times_add (SvSTATE (coro_current));
3310 }
3311
3312 EXTEND (SP, 2);
3313 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3314 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3315
3316 if (expect_false (current == self))
3317 coro_times_sub (SvSTATE (coro_current));
3318}
3319
2290MODULE = Coro::State PACKAGE = Coro 3320MODULE = Coro::State PACKAGE = Coro
2291 3321
2292BOOT: 3322BOOT:
2293{ 3323{
2294 int i;
2295
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3324 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3325 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3326 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3327 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3328 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3329 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3330 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3331 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3332 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3333
3334 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3335 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3336 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3337 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2302 3338
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3339 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3340
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3341 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3342 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2307 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3343 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2308 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3344 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2309 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3345 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2310 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3346 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2311
2312 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2313 coro_ready[i] = newAV ();
2314 3347
2315 { 3348 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3349 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3350
2318 coroapi.schedule = api_schedule; 3351 coroapi.schedule = api_schedule;
3352 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3353 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3354 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3355 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3356 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3357 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3358 coroapi.current = coro_current;
2325 3359
2326 GCoroAPI = &coroapi; 3360 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3361 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3362 SvREADONLY_on (sv);
2329 } 3363 }
2330} 3364}
2331 3365
3366SV *
3367async (...)
3368 PROTOTYPE: &@
3369 CODE:
3370 RETVAL = coro_new (coro_stash, &ST (0), items, 1);
3371 api_ready (RETVAL);
3372 OUTPUT:
3373 RETVAL
3374
3375void
3376terminate (...)
3377 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3379
2332void 3380void
2333schedule (...) 3381schedule (...)
2334 CODE: 3382 CODE:
2335{ 3383 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3384
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3385void
2338} 3386schedule_to (...)
3387 CODE:
3388 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3389
3390void
3391cede_to (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3394
2340void 3395void
2341cede (...) 3396cede (...)
2342 CODE: 3397 CODE:
2343{ 3398 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3399
2348void 3400void
2349cede_notself (...) 3401cede_notself (...)
2350 CODE: 3402 CODE:
2351{ 3403 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354}
2355 3404
2356void 3405void
2357_set_current (SV *current) 3406_set_current (SV *current)
2358 PROTOTYPE: $ 3407 PROTOTYPE: $
2359 CODE: 3408 CODE:
… …
2362 3411
2363void 3412void
2364_set_readyhook (SV *hook) 3413_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3414 PROTOTYPE: $
2366 CODE: 3415 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3416 SvREFCNT_dec (coro_readyhook);
3417 SvGETMAGIC (hook);
3418 if (SvOK (hook))
3419 {
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3420 coro_readyhook = newSVsv (hook);
2370 UNLOCK; 3421 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3422 }
3423 else
3424 {
3425 coro_readyhook = 0;
3426 CORO_READYHOOK = 0;
3427 }
2371 3428
2372int 3429int
2373prio (Coro::State coro, int newprio = 0) 3430prio (Coro::State coro, int newprio = 0)
3431 PROTOTYPE: $;$
2374 ALIAS: 3432 ALIAS:
2375 nice = 1 3433 nice = 1
2376 CODE: 3434 CODE:
2377{ 3435{
2378 RETVAL = coro->prio; 3436 RETVAL = coro->prio;
… …
2380 if (items > 1) 3438 if (items > 1)
2381 { 3439 {
2382 if (ix) 3440 if (ix)
2383 newprio = coro->prio - newprio; 3441 newprio = coro->prio - newprio;
2384 3442
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3443 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3444 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3445
2388 coro->prio = newprio; 3446 coro->prio = newprio;
2389 } 3447 }
2390} 3448}
2391 OUTPUT: 3449 OUTPUT:
… …
2405 CODE: 3463 CODE:
2406 RETVAL = coro_nready; 3464 RETVAL = coro_nready;
2407 OUTPUT: 3465 OUTPUT:
2408 RETVAL 3466 RETVAL
2409 3467
2410# for async_pool speedup
2411void 3468void
2412_pool_1 (SV *cb) 3469suspend (Coro::State self)
3470 PROTOTYPE: $
2413 CODE: 3471 CODE:
2414{ 3472 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3473
2422 if (!invoke) 3474void
3475resume (Coro::State self)
3476 PROTOTYPE: $
3477 CODE:
3478 self->flags &= ~CF_SUSPENDED;
3479
3480void
3481_pool_handler (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3484
3485void
3486async_pool (SV *cv, ...)
3487 PROTOTYPE: &@
3488 PPCODE:
3489{
3490 HV *hv = (HV *)av_pop (av_async_pool);
3491 AV *av = newAV ();
3492 SV *cb = ST (0);
3493 int i;
3494
3495 av_extend (av, items - 2);
3496 for (i = 1; i < items; ++i)
3497 av_push (av, SvREFCNT_inc_NN (ST (i)));
3498
3499 if ((SV *)hv == &PL_sv_undef)
2423 { 3500 {
2424 SV *old = PL_diehook; 3501 PUSHMARK (SP);
2425 PL_diehook = 0; 3502 EXTEND (SP, 2);
2426 SvREFCNT_dec (old); 3503 PUSHs (sv_Coro);
2427 croak ("\3async_pool terminate\2\n"); 3504 PUSHs ((SV *)cv_pool_handler);
3505 PUTBACK;
3506 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3507 SPAGAIN;
3508
3509 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2428 } 3510 }
2429 3511
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3512 {
2443 av_fill (defav, len - 1); 3513 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3514
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3515 assert (!coro->invoke_cb);
3516 assert (!coro->invoke_av);
3517 coro->invoke_cb = SvREFCNT_inc (cb);
3518 coro->invoke_av = av;
2446 } 3519 }
2447 3520
3521 api_ready (aTHX_ (SV *)hv);
3522
3523 if (GIMME_V != G_VOID)
3524 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3525 else
2448 SvREFCNT_dec (invoke); 3526 SvREFCNT_dec (hv);
2449} 3527}
2450 3528
2451void 3529SV *
2452_pool_2 (SV *cb) 3530rouse_cb ()
3531 PROTOTYPE:
2453 CODE: 3532 CODE:
2454{ 3533 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3534 OUTPUT:
2527 RETVAL 3535 RETVAL
2528 3536
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3537void
2535_get_state (SV *self) 3538rouse_wait (...)
3539 PROTOTYPE: ;$
2536 PPCODE: 3540 PPCODE:
2537{ 3541 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3542
2563void 3543void
2564_set_state (SV *state) 3544on_enter (SV *block)
3545 ALIAS:
3546 on_leave = 1
2565 PROTOTYPE: $ 3547 PROTOTYPE: &
3548 CODE:
3549{
3550 struct coro *coro = SvSTATE_current;
3551 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3552
3553 block = s_get_cv_croak (block);
3554
3555 if (!*avp)
3556 *avp = newAV ();
3557
3558 av_push (*avp, SvREFCNT_inc (block));
3559
3560 if (!ix)
3561 on_enterleave_call (aTHX_ block);
3562
3563 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3564 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3565 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3566}
3567
3568
3569MODULE = Coro::State PACKAGE = PerlIO::cede
3570
3571BOOT:
3572 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3573
3574
3575MODULE = Coro::State PACKAGE = Coro::Semaphore
3576
3577SV *
3578new (SV *klass, SV *count = 0)
3579 CODE:
3580{
3581 int semcnt = 1;
3582
3583 if (count)
3584 {
3585 SvGETMAGIC (count);
3586
3587 if (SvOK (count))
3588 semcnt = SvIV (count);
3589 }
3590
3591 RETVAL = sv_bless (
3592 coro_waitarray_new (aTHX_ semcnt),
3593 GvSTASH (CvGV (cv))
3594 );
3595}
3596 OUTPUT:
3597 RETVAL
3598
3599# helper for Coro::Channel and others
3600SV *
3601_alloc (int count)
3602 CODE:
3603 RETVAL = coro_waitarray_new (aTHX_ count);
3604 OUTPUT:
3605 RETVAL
3606
3607SV *
3608count (SV *self)
3609 CODE:
3610 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3611 OUTPUT:
3612 RETVAL
3613
3614void
3615up (SV *self, int adjust = 1)
3616 ALIAS:
3617 adjust = 1
3618 CODE:
3619 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3620
3621void
3622down (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3625
3626void
3627wait (...)
3628 CODE:
3629 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3630
3631void
3632try (SV *self)
3633 PPCODE:
3634{
3635 AV *av = (AV *)SvRV (self);
3636 SV *count_sv = AvARRAY (av)[0];
3637 IV count = SvIVX (count_sv);
3638
3639 if (count > 0)
3640 {
3641 --count;
3642 SvIVX (count_sv) = count;
3643 XSRETURN_YES;
3644 }
3645 else
3646 XSRETURN_NO;
3647}
3648
3649void
3650waiters (SV *self)
3651 PPCODE:
3652{
3653 AV *av = (AV *)SvRV (self);
3654 int wcount = AvFILLp (av) + 1 - 1;
3655
3656 if (GIMME_V == G_SCALAR)
3657 XPUSHs (sv_2mortal (newSViv (wcount)));
3658 else
3659 {
3660 int i;
3661 EXTEND (SP, wcount);
3662 for (i = 1; i <= wcount; ++i)
3663 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3664 }
3665}
3666
3667MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3668
3669void
3670_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 3671 PPCODE:
2567{ 3672{
2568 AV *av = (AV *)SvRV (state); 3673 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 3674
2572 errno = data->errorno; 3675 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 3676 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 3677 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 3678 XSRETURN_YES;
2576 3679
3680 XSRETURN_NO;
3681}
3682
3683MODULE = Coro::State PACKAGE = Coro::Signal
3684
3685SV *
3686new (SV *klass)
3687 CODE:
3688 RETVAL = sv_bless (
3689 coro_waitarray_new (aTHX_ 0),
3690 GvSTASH (CvGV (cv))
3691 );
3692 OUTPUT:
3693 RETVAL
3694
3695void
3696wait (...)
3697 CODE:
3698 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3699
3700void
3701broadcast (SV *self)
3702 CODE:
3703{
3704 AV *av = (AV *)SvRV (self);
3705 coro_signal_wake (aTHX_ av, AvFILLp (av));
3706}
3707
3708void
3709send (SV *self)
3710 CODE:
3711{
3712 AV *av = (AV *)SvRV (self);
3713
2577 EXTEND (SP, AvFILLp (av)); 3714 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3715 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3716 else
3717 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3718}
3719
3720IV
3721awaited (SV *self)
3722 CODE:
3723 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3724 OUTPUT:
3725 RETVAL
2581 3726
2582 3727
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3728MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3729
2585BOOT: 3730BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3731 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3732
2588SV * 3733void
2589_schedule (...) 3734_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3735 CODE:
2592{ 3736{
2593 static int incede; 3737 static int incede;
2594 3738
2595 api_cede_notself (aTHX); 3739 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3745 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3746 if (coro_nready >= incede)
2603 { 3747 {
2604 PUSHMARK (SP); 3748 PUSHMARK (SP);
2605 PUTBACK; 3749 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3750 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3751 }
2609 3752
2610 --incede; 3753 --incede;
2611} 3754}
2612 3755
2613 3756
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3757MODULE = Coro::State PACKAGE = Coro::AIO
2615 3758
2616BOOT: 3759void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3760_register (char *target, char *proto, SV *req)
3761 CODE:
3762{
3763 SV *req_cv = s_get_cv_croak (req);
3764 /* newXSproto doesn't return the CV on 5.8 */
3765 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3766 sv_setpv ((SV *)slf_cv, proto);
3767 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3768}
2618 3769
3770MODULE = Coro::State PACKAGE = Coro::Select
3771
3772void
3773patch_pp_sselect ()
3774 CODE:
3775 if (!coro_old_pp_sselect)
3776 {
3777 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3778 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3779 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3780 }
3781
3782void
3783unpatch_pp_sselect ()
3784 CODE:
3785 if (coro_old_pp_sselect)
3786 {
3787 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3788 coro_old_pp_sselect = 0;
3789 }
3790
3791

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines