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Comparing Coro/Coro/State.xs (file contents):
Revision 1.239 by root, Sat Jun 28 23:14:19 2008 UTC vs.
Revision 1.361 by root, Wed Jul 1 07:26:40 2009 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
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 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63 61
64#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr 63# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
67# endif 65# endif
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 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
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS 102#endif
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs 103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
96#endif 108#endif
97 109
98/* 5.8.7 */ 110/* 5.8.7 */
99#ifndef SvRV_set 111#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 126#endif
115 127
116/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
118#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
120 137
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
122 139
123#if __GNUC__ >= 3 140#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline
127#else 144#else
128# define attribute(x) 145# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
131#endif 148#endif
132 149
133#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
135 152
136#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
137 154
138#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
139 157
140#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 159# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 161# endif
162#endif
148 163
149/* helper storage struct for Coro::AIO */ 164#ifdef __linux
150struct io_state 165# include <time.h> /* for timespec */
151{ 166# include <syscall.h> /* for SYS_* */
152 int errorno; 167# ifdef SYS_clock_gettime
153 I32 laststype; 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
154 int laststatval; 169# define CORO_CLOCK_MONOTONIC 1
155 Stat_t statcache; 170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
156}; 171# endif
172#endif
157 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175static void (*u2time)(pTHX_ UV ret[2]);
176
177/* we hijack an hopefully unused CV flag for our purposes */
178#define CVf_SLF 0x4000
179static OP *pp_slf (pTHX);
180
181static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 185static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
188
189static AV *av_destroy; /* destruction queue */
190static SV *sv_manager; /* the manager coro */
191static SV *sv_idle; /* $Coro::idle */
164 192
165static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 195static SV *rv_diehook;
168static SV *rv_warnhook; 196static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 197static HV *hv_sig; /* %SIG */
170 198
171/* async_pool helper stuff */ 199/* async_pool helper stuff */
172static SV *sv_pool_rss; 200static SV *sv_pool_rss;
173static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 203static AV *av_async_pool; /* idle pool */
204static SV *sv_Coro; /* class string */
205static CV *cv_pool_handler;
206static CV *cv_coro_state_new;
175 207
176/* Coro::AnyEvent */ 208/* Coro::AnyEvent */
177static SV *sv_activity; 209static SV *sv_activity;
210
211/* enable processtime/realtime profiling */
212static char enable_times;
213typedef U32 coro_ts[2];
214static coro_ts time_real, time_cpu;
215static char times_valid;
178 216
179static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
181 219
182enum { 220enum {
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 225 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 226 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 227};
190 228
191/* this is a structure representing a c-level coroutine */ 229/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 230typedef struct coro_cctx
231{
193 struct coro_cctx *next; 232 struct coro_cctx *next;
194 233
195 /* the stack */ 234 /* the stack */
196 void *sptr; 235 void *sptr;
197 size_t ssize; 236 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 239 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 240 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 241 JMPENV *top_env;
203 coro_context cctx; 242 coro_context cctx;
204 243
244 U32 gen;
205#if CORO_USE_VALGRIND 245#if CORO_USE_VALGRIND
206 int valgrind_id; 246 int valgrind_id;
207#endif 247#endif
208 unsigned char flags; 248 unsigned char flags;
209} coro_cctx; 249} coro_cctx;
250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
210 254
211enum { 255enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 259 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
260 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
216}; 261};
217 262
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 263/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 264typedef struct
265{
220 SV *defsv; 266 SV *defsv;
221 AV *defav; 267 AV *defav;
222 SV *errsv; 268 SV *errsv;
223 SV *irsgv; 269 SV *irsgv;
270 HV *hinthv;
224#define VAR(name,type) type name; 271#define VAR(name,type) type name;
225# include "state.h" 272# include "state.h"
226#undef VAR 273#undef VAR
227} perl_slots; 274} perl_slots;
228 275
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 276#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 277
231/* this is a structure representing a perl-level coroutine */ 278/* this is a structure representing a perl-level coroutine */
232struct coro { 279struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 280 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 281 coro_cctx *cctx;
235 282
236 /* process data */ 283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
287 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 288 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 289 perl_slots *slot; /* basically the saved sp */
239 290
291 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 292 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 293 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 294 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 295 HV *hv; /* the perl hash associated with this coro, if any */
296 void (*on_destroy)(pTHX_ struct coro *coro);
244 297
245 /* statistics */ 298 /* statistics */
246 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
247 300
248 /* coro process data */ 301 /* coro process data */
249 int prio; 302 int prio;
250 SV *throw; /* exception to be thrown */ 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
251 305
252 /* async_pool */ 306 /* async_pool */
253 SV *saved_deffh; 307 SV *saved_deffh;
308 SV *invoke_cb;
309 AV *invoke_av;
310
311 /* on_enter/on_leave */
312 AV *on_enter;
313 AV *on_leave;
314
315 /* times */
316 coro_ts t_cpu, t_real;
254 317
255 /* linked list */ 318 /* linked list */
256 struct coro *next, *prev; 319 struct coro *next, *prev;
257}; 320};
258 321
259typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
261 324
325/* the following variables are effectively part of the perl context */
326/* and get copied between struct coro and these variables */
327/* the mainr easonw e don't support windows process emulation */
328static struct CoroSLF slf_frame; /* the current slf frame */
329
262/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
263 331
264#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
265#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
266#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
267#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
268#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
269#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
270 338
271/* for Coro.pm */ 339/* for Coro.pm */
272static SV *coro_current; 340static SV *coro_current;
273static SV *coro_readyhook; 341static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 342static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
275static int coro_nready; 343static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 344static struct coro *coro_first;
345#define coro_nready coroapi.nready
277 346
278/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
279 348
280static SV * 349static SV *
281coro_get_sv (pTHX_ const char *name, int create) 350coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 374 get_hv (name, create);
306#endif 375#endif
307 return get_hv (name, create); 376 return get_hv (name, create);
308} 377}
309 378
379/* may croak */
380INLINE CV *
381coro_sv_2cv (pTHX_ SV *sv)
382{
383 HV *st;
384 GV *gvp;
385 CV *cv = sv_2cv (sv, &st, &gvp, 0);
386
387 if (!cv)
388 croak ("code reference expected");
389
390 return cv;
391}
392
393INLINE void
394coro_times_update ()
395{
396#ifdef coro_clock_gettime
397 struct timespec ts;
398
399 ts.tv_sec = ts.tv_nsec = 0;
400 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
401 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
402
403 ts.tv_sec = ts.tv_nsec = 0;
404 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
405 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
406#else
407 dTHX;
408 UV tv[2];
409
410 u2time (aTHX_ &tv);
411 time_real [0] = tv [0];
412 time_real [1] = tv [1] * 1000;
413#endif
414}
415
416INLINE void
417coro_times_add (struct coro *c)
418{
419 c->t_real [1] += time_real [1];
420 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
421 c->t_real [0] += time_real [0];
422
423 c->t_cpu [1] += time_cpu [1];
424 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
425 c->t_cpu [0] += time_cpu [0];
426}
427
428INLINE void
429coro_times_sub (struct coro *c)
430{
431 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
432 c->t_real [1] -= time_real [1];
433 c->t_real [0] -= time_real [0];
434
435 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
436 c->t_cpu [1] -= time_cpu [1];
437 c->t_cpu [0] -= time_cpu [0];
438}
439
440/*****************************************************************************/
441/* magic glue */
442
443#define CORO_MAGIC_type_cv 26
444#define CORO_MAGIC_type_state PERL_MAGIC_ext
445
446#define CORO_MAGIC_NN(sv, type) \
447 (expect_true (SvMAGIC (sv)->mg_type == type) \
448 ? SvMAGIC (sv) \
449 : mg_find (sv, type))
450
451#define CORO_MAGIC(sv, type) \
452 (expect_true (SvMAGIC (sv)) \
453 ? CORO_MAGIC_NN (sv, type) \
454 : 0)
455
456#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
457#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
458
459INLINE struct coro *
460SvSTATE_ (pTHX_ SV *coro)
461{
462 HV *stash;
463 MAGIC *mg;
464
465 if (SvROK (coro))
466 coro = SvRV (coro);
467
468 if (expect_false (SvTYPE (coro) != SVt_PVHV))
469 croak ("Coro::State object required");
470
471 stash = SvSTASH (coro);
472 if (expect_false (stash != coro_stash && stash != coro_state_stash))
473 {
474 /* very slow, but rare, check */
475 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
476 croak ("Coro::State object required");
477 }
478
479 mg = CORO_MAGIC_state (coro);
480 return (struct coro *)mg->mg_ptr;
481}
482
483#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
484
485/* faster than SvSTATE, but expects a coroutine hv */
486#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
487#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
488
489/*****************************************************************************/
490/* padlist management and caching */
491
310static AV * 492static AV *
311coro_clone_padlist (pTHX_ CV *cv) 493coro_derive_padlist (pTHX_ CV *cv)
312{ 494{
313 AV *padlist = CvPADLIST (cv); 495 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 496 AV *newpadlist, *newpad;
315 497
316 newpadlist = newAV (); 498 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 503 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 504#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 505 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 506 --AvFILLp (padlist);
325 507
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 508 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
327 av_store (newpadlist, 1, (SV *)newpad); 509 av_store (newpadlist, 1, (SV *)newpad);
328 510
329 return newpadlist; 511 return newpadlist;
330} 512}
331 513
332static void 514static void
333free_padlist (pTHX_ AV *padlist) 515free_padlist (pTHX_ AV *padlist)
334{ 516{
335 /* may be during global destruction */ 517 /* may be during global destruction */
336 if (SvREFCNT (padlist)) 518 if (!IN_DESTRUCT)
337 { 519 {
338 I32 i = AvFILLp (padlist); 520 I32 i = AvFILLp (padlist);
339 while (i >= 0) 521
522 while (i > 0) /* special-case index 0 */
340 { 523 {
341 SV **svp = av_fetch (padlist, i--, FALSE); 524 /* we try to be extra-careful here */
342 if (svp) 525 AV *av = (AV *)AvARRAY (padlist)[i--];
343 { 526 I32 j = AvFILLp (av);
344 SV *sv; 527
345 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 528 while (j >= 0)
529 SvREFCNT_dec (AvARRAY (av)[j--]);
530
531 AvFILLp (av) = -1;
346 SvREFCNT_dec (sv); 532 SvREFCNT_dec (av);
347
348 SvREFCNT_dec (*svp);
349 }
350 } 533 }
351 534
535 SvREFCNT_dec (AvARRAY (padlist)[0]);
536
537 AvFILLp (padlist) = -1;
352 SvREFCNT_dec ((SV*)padlist); 538 SvREFCNT_dec ((SV*)padlist);
353 } 539 }
354} 540}
355 541
356static int 542static int
357coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 543coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
358{ 544{
359 AV *padlist; 545 AV *padlist;
360 AV *av = (AV *)mg->mg_obj; 546 AV *av = (AV *)mg->mg_obj;
547
548 /* perl manages to free our internal AV and _then_ call us */
549 if (IN_DESTRUCT)
550 return;
361 551
362 /* casting is fun. */ 552 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 553 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 554 free_padlist (aTHX_ padlist);
365 555
556 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
557
366 return 0; 558 return 0;
367} 559}
368
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370#define CORO_MAGIC_type_state PERL_MAGIC_ext
371 560
372static MGVTBL coro_cv_vtbl = { 561static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 562 0, 0, 0, 0,
374 coro_cv_free 563 coro_cv_free
375}; 564};
376
377#define CORO_MAGIC(sv,type) \
378 SvMAGIC (sv) \
379 ? SvMAGIC (sv)->mg_type == type \
380 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \
382 : 0
383
384#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386
387static struct coro *
388SvSTATE_ (pTHX_ SV *coro)
389{
390 HV *stash;
391 MAGIC *mg;
392
393 if (SvROK (coro))
394 coro = SvRV (coro);
395
396 if (expect_false (SvTYPE (coro) != SVt_PVHV))
397 croak ("Coro::State object required");
398
399 stash = SvSTASH (coro);
400 if (expect_false (stash != coro_stash && stash != coro_state_stash))
401 {
402 /* very slow, but rare, check */
403 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
404 croak ("Coro::State object required");
405 }
406
407 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr;
409}
410
411#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
412 565
413/* the next two functions merely cache the padlists */ 566/* the next two functions merely cache the padlists */
414static void 567static void
415get_padlist (pTHX_ CV *cv) 568get_padlist (pTHX_ CV *cv)
416{ 569{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 573 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 574 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 575 else
423 { 576 {
424#if CORO_PREFER_PERL_FUNCTIONS 577#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 578 /* this is probably cleaner? but also slower! */
579 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 580 CV *cp = Perl_cv_clone (aTHX_ cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 581 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 582 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 583 SvREFCNT_dec (cp);
430#else 584#else
431 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 585 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
432#endif 586#endif
433 } 587 }
434} 588}
435 589
436static void 590static void
… …
443 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 597 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
444 598
445 av = (AV *)mg->mg_obj; 599 av = (AV *)mg->mg_obj;
446 600
447 if (expect_false (AvFILLp (av) >= AvMAX (av))) 601 if (expect_false (AvFILLp (av) >= AvMAX (av)))
448 av_extend (av, AvMAX (av) + 1); 602 av_extend (av, AvFILLp (av) + 1);
449 603
450 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 604 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
451} 605}
452 606
453/** load & save, init *******************************************************/ 607/** load & save, init *******************************************************/
608
609static void
610on_enterleave_call (pTHX_ SV *cb);
454 611
455static void 612static void
456load_perl (pTHX_ Coro__State c) 613load_perl (pTHX_ Coro__State c)
457{ 614{
458 perl_slots *slot = c->slot; 615 perl_slots *slot = c->slot;
459 c->slot = 0; 616 c->slot = 0;
460 617
461 PL_mainstack = c->mainstack; 618 PL_mainstack = c->mainstack;
462 619
463 GvSV (PL_defgv) = slot->defsv; 620 GvSV (PL_defgv) = slot->defsv;
464 GvAV (PL_defgv) = slot->defav; 621 GvAV (PL_defgv) = slot->defav;
465 GvSV (PL_errgv) = slot->errsv; 622 GvSV (PL_errgv) = slot->errsv;
466 GvSV (irsgv) = slot->irsgv; 623 GvSV (irsgv) = slot->irsgv;
624 GvHV (PL_hintgv) = slot->hinthv;
467 625
468 #define VAR(name,type) PL_ ## name = slot->name; 626 #define VAR(name,type) PL_ ## name = slot->name;
469 # include "state.h" 627 # include "state.h"
470 #undef VAR 628 #undef VAR
471 629
… …
482 CvPADLIST (cv) = (AV *)POPs; 640 CvPADLIST (cv) = (AV *)POPs;
483 } 641 }
484 642
485 PUTBACK; 643 PUTBACK;
486 } 644 }
645
646 slf_frame = c->slf_frame;
647 CORO_THROW = c->except;
648
649 if (expect_false (enable_times))
650 {
651 if (expect_false (!times_valid))
652 coro_times_update ();
653
654 coro_times_sub (c);
655 }
656
657 if (expect_false (c->on_enter))
658 {
659 int i;
660
661 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
662 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
663 }
487} 664}
488 665
489static void 666static void
490save_perl (pTHX_ Coro__State c) 667save_perl (pTHX_ Coro__State c)
491{ 668{
669 if (expect_false (c->on_leave))
670 {
671 int i;
672
673 for (i = AvFILLp (c->on_leave); i >= 0; --i)
674 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
675 }
676
677 times_valid = 0;
678
679 if (expect_false (enable_times))
680 {
681 coro_times_update (); times_valid = 1;
682 coro_times_add (c);
683 }
684
685 c->except = CORO_THROW;
686 c->slf_frame = slf_frame;
687
492 { 688 {
493 dSP; 689 dSP;
494 I32 cxix = cxstack_ix; 690 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 691 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 692 PERL_SI *top_si = PL_curstackinfo;
… …
506 { 702 {
507 while (expect_true (cxix >= 0)) 703 while (expect_true (cxix >= 0))
508 { 704 {
509 PERL_CONTEXT *cx = &ccstk[cxix--]; 705 PERL_CONTEXT *cx = &ccstk[cxix--];
510 706
511 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 707 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
512 { 708 {
513 CV *cv = cx->blk_sub.cv; 709 CV *cv = cx->blk_sub.cv;
514 710
515 if (expect_true (CvDEPTH (cv))) 711 if (expect_true (CvDEPTH (cv)))
516 { 712 {
… …
551 c->mainstack = PL_mainstack; 747 c->mainstack = PL_mainstack;
552 748
553 { 749 {
554 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 750 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
555 751
556 slot->defav = GvAV (PL_defgv); 752 slot->defav = GvAV (PL_defgv);
557 slot->defsv = DEFSV; 753 slot->defsv = DEFSV;
558 slot->errsv = ERRSV; 754 slot->errsv = ERRSV;
559 slot->irsgv = GvSV (irsgv); 755 slot->irsgv = GvSV (irsgv);
756 slot->hinthv = GvHV (PL_hintgv);
560 757
561 #define VAR(name,type) slot->name = PL_ ## name; 758 #define VAR(name,type) slot->name = PL_ ## name;
562 # include "state.h" 759 # include "state.h"
563 #undef VAR 760 #undef VAR
564 } 761 }
565} 762}
566 763
567/* 764/*
568 * allocate various perl stacks. This is an exact copy 765 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 766 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 767 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 768 * not usually need a lot of stackspace.
572 */ 769 */
573#if CORO_PREFER_PERL_FUNCTIONS 770#if CORO_PREFER_PERL_FUNCTIONS
574# define coro_init_stacks init_stacks 771# define coro_init_stacks(thx) init_stacks ()
575#else 772#else
576static void 773static void
577coro_init_stacks (pTHX) 774coro_init_stacks (pTHX)
578{ 775{
579 PL_curstackinfo = new_stackinfo(32, 8); 776 PL_curstackinfo = new_stackinfo(32, 8);
… …
616 813
617/* 814/*
618 * destroy the stacks, the callchain etc... 815 * destroy the stacks, the callchain etc...
619 */ 816 */
620static void 817static void
621coro_destroy_stacks (pTHX) 818coro_destruct_stacks (pTHX)
622{ 819{
623 while (PL_curstackinfo->si_next) 820 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 821 PL_curstackinfo = PL_curstackinfo->si_next;
625 822
626 while (PL_curstackinfo) 823 while (PL_curstackinfo)
… …
642#if !PERL_VERSION_ATLEAST (5,10,0) 839#if !PERL_VERSION_ATLEAST (5,10,0)
643 Safefree (PL_retstack); 840 Safefree (PL_retstack);
644#endif 841#endif
645} 842}
646 843
844#define CORO_RSS \
845 rss += sizeof (SYM (curstackinfo)); \
846 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
847 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
848 rss += SYM (tmps_max) * sizeof (SV *); \
849 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
850 rss += SYM (scopestack_max) * sizeof (I32); \
851 rss += SYM (savestack_max) * sizeof (ANY);
852
647static size_t 853static size_t
648coro_rss (pTHX_ struct coro *coro) 854coro_rss (pTHX_ struct coro *coro)
649{ 855{
650 size_t rss = sizeof (*coro); 856 size_t rss = sizeof (*coro);
651 857
652 if (coro->mainstack) 858 if (coro->mainstack)
653 { 859 {
654 perl_slots tmp_slot;
655 perl_slots *slot;
656
657 if (coro->flags & CF_RUNNING) 860 if (coro->flags & CF_RUNNING)
658 { 861 {
659 slot = &tmp_slot; 862 #define SYM(sym) PL_ ## sym
660 863 CORO_RSS;
661 #define VAR(name,type) slot->name = PL_ ## name;
662 # include "state.h"
663 #undef VAR 864 #undef SYM
664 } 865 }
665 else 866 else
666 slot = coro->slot; 867 {
667 868 #define SYM(sym) coro->slot->sym
668 rss += sizeof (slot->curstackinfo); 869 CORO_RSS;
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 870 #undef SYM
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 871 }
671 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY);
675
676#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *);
678#endif
679 } 872 }
680 873
681 return rss; 874 return rss;
682} 875}
683 876
… …
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 879static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 880static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
688static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); 881static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
689 882
690/* apparently < 5.8.8 */ 883/* apparently < 5.8.8 */
691#undef MgPV_nolen_const
692#ifndef MgPV_nolen_const 884#ifndef MgPV_nolen_const
693#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 885#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
694 SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \ 886 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
695 (const char*)(mg)->mg_ptr) 887 (const char*)(mg)->mg_ptr)
696#endif 888#endif
697 889
698/* 890/*
699 * This overrides the default magic get method of %SIG elements. 891 * This overrides the default magic get method of %SIG elements.
700 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 892 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
701 * and instead of tryign to save and restore the hash elements, we just provide 893 * and instead of trying to save and restore the hash elements, we just provide
702 * readback here. 894 * readback here.
703 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
704 * not expecting this to actually change the hook. This is a potential problem
705 * when a schedule happens then, but we ignore this.
706 */ 895 */
707static int 896static int
708coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 897coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
709{ 898{
710 const char *s = MgPV_nolen_const (mg); 899 const char *s = MgPV_nolen_const (mg);
… …
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 952 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764 953
765 if (svp) 954 if (svp)
766 { 955 {
767 SV *old = *svp; 956 SV *old = *svp;
768 *svp = newSVsv (sv); 957 *svp = SvOK (sv) ? newSVsv (sv) : 0;
769 SvREFCNT_dec (old); 958 SvREFCNT_dec (old);
770 return 0; 959 return 0;
771 } 960 }
772 } 961 }
773 962
774 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 963 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
775} 964}
776 965
777static void 966static void
967prepare_nop (pTHX_ struct coro_transfer_args *ta)
968{
969 /* kind of mega-hacky, but works */
970 ta->next = ta->prev = (struct coro *)ta;
971}
972
973static int
974slf_check_nop (pTHX_ struct CoroSLF *frame)
975{
976 return 0;
977}
978
979static int
980slf_check_repeat (pTHX_ struct CoroSLF *frame)
981{
982 return 1;
983}
984
985static UNOP coro_setup_op;
986
987static void NOINLINE /* noinline to keep it out of the transfer fast path */
778coro_setup (pTHX_ struct coro *coro) 988coro_setup (pTHX_ struct coro *coro)
779{ 989{
780 /* 990 /*
781 * emulate part of the perl startup here. 991 * emulate part of the perl startup here.
782 */ 992 */
… …
784 994
785 PL_runops = RUNOPS_DEFAULT; 995 PL_runops = RUNOPS_DEFAULT;
786 PL_curcop = &PL_compiling; 996 PL_curcop = &PL_compiling;
787 PL_in_eval = EVAL_NULL; 997 PL_in_eval = EVAL_NULL;
788 PL_comppad = 0; 998 PL_comppad = 0;
999 PL_comppad_name = 0;
1000 PL_comppad_name_fill = 0;
1001 PL_comppad_name_floor = 0;
789 PL_curpm = 0; 1002 PL_curpm = 0;
790 PL_curpad = 0; 1003 PL_curpad = 0;
791 PL_localizing = 0; 1004 PL_localizing = 0;
792 PL_dirty = 0; 1005 PL_dirty = 0;
793 PL_restartop = 0; 1006 PL_restartop = 0;
794#if PERL_VERSION_ATLEAST (5,10,0) 1007#if PERL_VERSION_ATLEAST (5,10,0)
795 PL_parser = 0; 1008 PL_parser = 0;
796#endif 1009#endif
1010 PL_hints = 0;
797 1011
798 /* recreate the die/warn hooks */ 1012 /* recreate the die/warn hooks */
799 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1013 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
800 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1014 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
801 1015
802 GvSV (PL_defgv) = newSV (0); 1016 GvSV (PL_defgv) = newSV (0);
803 GvAV (PL_defgv) = coro->args; coro->args = 0; 1017 GvAV (PL_defgv) = coro->args; coro->args = 0;
804 GvSV (PL_errgv) = newSV (0); 1018 GvSV (PL_errgv) = newSV (0);
805 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1019 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1020 GvHV (PL_hintgv) = 0;
806 PL_rs = newSVsv (GvSV (irsgv)); 1021 PL_rs = newSVsv (GvSV (irsgv));
807 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 1022 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
808 1023
809 { 1024 {
810 dSP; 1025 dSP;
811 LOGOP myop; 1026 UNOP myop;
812 1027
813 Zero (&myop, 1, LOGOP); 1028 Zero (&myop, 1, UNOP);
814 myop.op_next = Nullop; 1029 myop.op_next = Nullop;
1030 myop.op_type = OP_ENTERSUB;
815 myop.op_flags = OPf_WANT_VOID; 1031 myop.op_flags = OPf_WANT_VOID;
816 1032
817 PUSHMARK (SP); 1033 PUSHMARK (SP);
818 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1034 PUSHs ((SV *)coro->startcv);
819 PUTBACK; 1035 PUTBACK;
820 PL_op = (OP *)&myop; 1036 PL_op = (OP *)&myop;
821 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1037 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
822 SPAGAIN;
823 } 1038 }
824 1039
825 /* this newly created coroutine might be run on an existing cctx which most 1040 /* this newly created coroutine might be run on an existing cctx which most
826 * likely was suspended in set_stacklevel, called from entersub. 1041 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
827 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
828 * so we ENTER here for symmetry
829 */ 1042 */
830 ENTER; 1043 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
831} 1044 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
832 1045
1046 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1047 coro_setup_op.op_next = PL_op;
1048 coro_setup_op.op_type = OP_ENTERSUB;
1049 coro_setup_op.op_ppaddr = pp_slf;
1050 /* no flags etc. required, as an init function won't be called */
1051
1052 PL_op = (OP *)&coro_setup_op;
1053
1054 /* copy throw, in case it was set before coro_setup */
1055 CORO_THROW = coro->except;
1056
1057 if (expect_false (enable_times))
1058 {
1059 coro_times_update ();
1060 coro_times_sub (coro);
1061 }
1062}
1063
833static void 1064static void
834coro_destroy (pTHX_ struct coro *coro) 1065coro_unwind_stacks (pTHX)
835{ 1066{
836 if (!IN_DESTRUCT) 1067 if (!IN_DESTRUCT)
837 { 1068 {
838 /* restore all saved variables and stuff */ 1069 /* restore all saved variables and stuff */
839 LEAVE_SCOPE (0); 1070 LEAVE_SCOPE (0);
… …
847 POPSTACK_TO (PL_mainstack); 1078 POPSTACK_TO (PL_mainstack);
848 1079
849 /* unwind main stack */ 1080 /* unwind main stack */
850 dounwind (-1); 1081 dounwind (-1);
851 } 1082 }
1083}
852 1084
853 SvREFCNT_dec (GvSV (PL_defgv)); 1085static void
854 SvREFCNT_dec (GvAV (PL_defgv)); 1086coro_destruct_perl (pTHX_ struct coro *coro)
855 SvREFCNT_dec (GvSV (PL_errgv)); 1087{
856 SvREFCNT_dec (PL_defoutgv); 1088 SV *svf [9];
857 SvREFCNT_dec (PL_rs);
858 SvREFCNT_dec (GvSV (irsgv));
859 1089
860 SvREFCNT_dec (PL_diehook);
861 SvREFCNT_dec (PL_warnhook);
862 1090 {
1091 struct coro *current = SvSTATE_current;
1092
1093 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1094
1095 save_perl (aTHX_ current);
1096 load_perl (aTHX_ coro);
1097
1098 coro_unwind_stacks (aTHX);
1099 coro_destruct_stacks (aTHX);
1100
1101 // now save some sv's to be free'd later
1102 svf [0] = GvSV (PL_defgv);
1103 svf [1] = (SV *)GvAV (PL_defgv);
1104 svf [2] = GvSV (PL_errgv);
1105 svf [3] = (SV *)PL_defoutgv;
1106 svf [4] = PL_rs;
1107 svf [5] = GvSV (irsgv);
1108 svf [6] = (SV *)GvHV (PL_hintgv);
1109 svf [7] = PL_diehook;
1110 svf [8] = PL_warnhook;
1111 assert (9 == sizeof (svf) / sizeof (*svf));
1112
1113 load_perl (aTHX_ current);
1114 }
1115
1116 {
1117 int i;
1118
1119 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1120 SvREFCNT_dec (svf [i]);
1121
863 SvREFCNT_dec (coro->saved_deffh); 1122 SvREFCNT_dec (coro->saved_deffh);
864 SvREFCNT_dec (coro->throw); 1123 SvREFCNT_dec (coro->rouse_cb);
865 1124 SvREFCNT_dec (coro->invoke_cb);
866 coro_destroy_stacks (aTHX); 1125 SvREFCNT_dec (coro->invoke_av);
1126 }
867} 1127}
868 1128
869static void 1129INLINE void
870free_coro_mortal (pTHX) 1130free_coro_mortal (pTHX)
871{ 1131{
872 if (expect_true (coro_mortal)) 1132 if (expect_true (coro_mortal))
873 { 1133 {
874 SvREFCNT_dec (coro_mortal); 1134 SvREFCNT_dec (coro_mortal);
… …
879static int 1139static int
880runops_trace (pTHX) 1140runops_trace (pTHX)
881{ 1141{
882 COP *oldcop = 0; 1142 COP *oldcop = 0;
883 int oldcxix = -2; 1143 int oldcxix = -2;
884 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
885 coro_cctx *cctx = coro->cctx;
886 1144
887 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1145 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
888 { 1146 {
889 PERL_ASYNC_CHECK (); 1147 PERL_ASYNC_CHECK ();
890 1148
891 if (cctx->flags & CC_TRACE_ALL) 1149 if (cctx_current->flags & CC_TRACE_ALL)
892 { 1150 {
893 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1151 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
894 { 1152 {
895 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1153 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
896 SV **bot, **top; 1154 SV **bot, **top;
897 AV *av = newAV (); /* return values */ 1155 AV *av = newAV (); /* return values */
898 SV **cb; 1156 SV **cb;
… …
908 : cx->blk_gimme == G_SCALAR ? bot + 1 1166 : cx->blk_gimme == G_SCALAR ? bot + 1
909 : bot; 1167 : bot;
910 1168
911 av_extend (av, top - bot); 1169 av_extend (av, top - bot);
912 while (bot < top) 1170 while (bot < top)
913 av_push (av, SvREFCNT_inc (*bot++)); 1171 av_push (av, SvREFCNT_inc_NN (*bot++));
914 1172
915 PL_runops = RUNOPS_DEFAULT; 1173 PL_runops = RUNOPS_DEFAULT;
916 ENTER; 1174 ENTER;
917 SAVETMPS; 1175 SAVETMPS;
918 EXTEND (SP, 3); 1176 EXTEND (SP, 3);
… …
935 1193
936 if (PL_curcop != &PL_compiling) 1194 if (PL_curcop != &PL_compiling)
937 { 1195 {
938 SV **cb; 1196 SV **cb;
939 1197
940 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1198 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
941 { 1199 {
942 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1200 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
943 1201
944 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1202 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
945 { 1203 {
946 runops_proc_t old_runops = PL_runops;
947 dSP; 1204 dSP;
948 GV *gv = CvGV (cx->blk_sub.cv); 1205 GV *gv = CvGV (cx->blk_sub.cv);
949 SV *fullname = sv_2mortal (newSV (0)); 1206 SV *fullname = sv_2mortal (newSV (0));
950 1207
951 if (isGV (gv)) 1208 if (isGV (gv))
… …
956 SAVETMPS; 1213 SAVETMPS;
957 EXTEND (SP, 3); 1214 EXTEND (SP, 3);
958 PUSHMARK (SP); 1215 PUSHMARK (SP);
959 PUSHs (&PL_sv_yes); 1216 PUSHs (&PL_sv_yes);
960 PUSHs (fullname); 1217 PUSHs (fullname);
961 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1218 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
962 PUTBACK; 1219 PUTBACK;
963 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1220 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
964 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1221 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
965 SPAGAIN; 1222 SPAGAIN;
966 FREETMPS; 1223 FREETMPS;
… …
969 } 1226 }
970 1227
971 oldcxix = cxstack_ix; 1228 oldcxix = cxstack_ix;
972 } 1229 }
973 1230
974 if (cctx->flags & CC_TRACE_LINE) 1231 if (cctx_current->flags & CC_TRACE_LINE)
975 { 1232 {
976 dSP; 1233 dSP;
977 1234
978 PL_runops = RUNOPS_DEFAULT; 1235 PL_runops = RUNOPS_DEFAULT;
979 ENTER; 1236 ENTER;
… …
998 1255
999 TAINT_NOT; 1256 TAINT_NOT;
1000 return 0; 1257 return 0;
1001} 1258}
1002 1259
1003/* inject a fake call to Coro::State::_cctx_init into the execution */ 1260static struct CoroSLF cctx_ssl_frame;
1004/* _cctx_init should be careful, as it could be called at almost any time */ 1261
1005/* during execution of a perl program */ 1262static void
1263slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1264{
1265 ta->prev = 0;
1266}
1267
1268static int
1269slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1270{
1271 *frame = cctx_ssl_frame;
1272
1273 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1274}
1275
1276/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1006static void NOINLINE 1277static void NOINLINE
1007cctx_prepare (pTHX_ coro_cctx *cctx) 1278cctx_prepare (pTHX)
1008{ 1279{
1009 dSP;
1010 LOGOP myop;
1011
1012 PL_top_env = &PL_start_env; 1280 PL_top_env = &PL_start_env;
1013 1281
1014 if (cctx->flags & CC_TRACE) 1282 if (cctx_current->flags & CC_TRACE)
1015 PL_runops = runops_trace; 1283 PL_runops = runops_trace;
1016 1284
1017 Zero (&myop, 1, LOGOP); 1285 /* we already must be executing an SLF op, there is no other valid way
1018 myop.op_next = PL_op; 1286 * that can lead to creation of a new cctx */
1019 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1287 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1288 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1020 1289
1021 PUSHMARK (SP); 1290 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1022 EXTEND (SP, 2); 1291 cctx_ssl_frame = slf_frame;
1023 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1292
1024 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1293 slf_frame.prepare = slf_prepare_set_stacklevel;
1025 PUTBACK; 1294 slf_frame.check = slf_check_set_stacklevel;
1026 PL_op = (OP *)&myop; 1295}
1027 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1296
1028 SPAGAIN; 1297/* the tail of transfer: execute stuff we can only do after a transfer */
1298INLINE void
1299transfer_tail (pTHX)
1300{
1301 free_coro_mortal (aTHX);
1029} 1302}
1030 1303
1031/* 1304/*
1032 * this is a _very_ stripped down perl interpreter ;) 1305 * this is a _very_ stripped down perl interpreter ;)
1033 */ 1306 */
1034static void 1307static void
1035cctx_run (void *arg) 1308cctx_run (void *arg)
1036{ 1309{
1310#ifdef USE_ITHREADS
1311# if CORO_PTHREAD
1312 PERL_SET_CONTEXT (coro_thx);
1313# endif
1314#endif
1315 {
1037 dTHX; 1316 dTHX;
1038 1317
1039 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1318 /* normally we would need to skip the entersub here */
1040 UNLOCK; 1319 /* not doing so will re-execute it, which is exactly what we want */
1041
1042 /* we now skip the entersub that lead to transfer() */
1043 PL_op = PL_op->op_next; 1320 /* PL_nop = PL_nop->op_next */
1044 1321
1045 /* inject a fake subroutine call to cctx_init */ 1322 /* inject a fake subroutine call to cctx_init */
1046 cctx_prepare (aTHX_ (coro_cctx *)arg); 1323 cctx_prepare (aTHX);
1047 1324
1325 /* cctx_run is the alternative tail of transfer() */
1326 transfer_tail (aTHX);
1327
1048 /* somebody or something will hit me for both perl_run and PL_restartop */ 1328 /* somebody or something will hit me for both perl_run and PL_restartop */
1049 PL_restartop = PL_op; 1329 PL_restartop = PL_op;
1050 perl_run (PL_curinterp); 1330 perl_run (PL_curinterp);
1051
1052 /* 1331 /*
1332 * Unfortunately, there is no way to get at the return values of the
1333 * coro body here, as perl_run destroys these
1334 */
1335
1336 /*
1053 * If perl-run returns we assume exit() was being called or the coro 1337 * If perl-run returns we assume exit() was being called or the coro
1054 * fell off the end, which seems to be the only valid (non-bug) 1338 * fell off the end, which seems to be the only valid (non-bug)
1055 * reason for perl_run to return. We try to exit by jumping to the 1339 * reason for perl_run to return. We try to exit by jumping to the
1056 * bootstrap-time "top" top_env, as we cannot restore the "main" 1340 * bootstrap-time "top" top_env, as we cannot restore the "main"
1057 * coroutine as Coro has no such concept 1341 * coroutine as Coro has no such concept.
1342 * This actually isn't valid with the pthread backend, but OSes requiring
1343 * that backend are too broken to do it in a standards-compliant way.
1058 */ 1344 */
1059 PL_top_env = main_top_env; 1345 PL_top_env = main_top_env;
1060 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1346 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1347 }
1061} 1348}
1062 1349
1063static coro_cctx * 1350static coro_cctx *
1064cctx_new () 1351cctx_new ()
1065{ 1352{
1066 coro_cctx *cctx; 1353 coro_cctx *cctx;
1354
1355 ++cctx_count;
1356 New (0, cctx, 1, coro_cctx);
1357
1358 cctx->gen = cctx_gen;
1359 cctx->flags = 0;
1360 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1361
1362 return cctx;
1363}
1364
1365/* create a new cctx only suitable as source */
1366static coro_cctx *
1367cctx_new_empty ()
1368{
1369 coro_cctx *cctx = cctx_new ();
1370
1371 cctx->sptr = 0;
1372 coro_create (&cctx->cctx, 0, 0, 0, 0);
1373
1374 return cctx;
1375}
1376
1377/* create a new cctx suitable as destination/running a perl interpreter */
1378static coro_cctx *
1379cctx_new_run ()
1380{
1381 coro_cctx *cctx = cctx_new ();
1067 void *stack_start; 1382 void *stack_start;
1068 size_t stack_size; 1383 size_t stack_size;
1069 1384
1070 ++cctx_count;
1071
1072 Newz (0, cctx, 1, coro_cctx);
1073
1074#if HAVE_MMAP 1385#if HAVE_MMAP
1075 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1386 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1076 /* mmap supposedly does allocate-on-write for us */ 1387 /* mmap supposedly does allocate-on-write for us */
1077 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1388 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1078 1389
1079 if (cctx->sptr != (void *)-1) 1390 if (cctx->sptr != (void *)-1)
1080 { 1391 {
1081# if CORO_STACKGUARD 1392 #if CORO_STACKGUARD
1082 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1393 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1083# endif 1394 #endif
1084 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1395 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1085 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1396 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1086 cctx->flags |= CC_MAPPED; 1397 cctx->flags |= CC_MAPPED;
1087 } 1398 }
1088 else 1399 else
1089#endif 1400#endif
1090 { 1401 {
1091 cctx->ssize = coro_stacksize * (long)sizeof (long); 1402 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1092 New (0, cctx->sptr, coro_stacksize, long); 1403 New (0, cctx->sptr, cctx_stacksize, long);
1093 1404
1094 if (!cctx->sptr) 1405 if (!cctx->sptr)
1095 { 1406 {
1096 perror ("FATAL: unable to allocate stack for coroutine"); 1407 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1097 _exit (EXIT_FAILURE); 1408 _exit (EXIT_FAILURE);
1098 } 1409 }
1099 1410
1100 stack_start = cctx->sptr; 1411 stack_start = cctx->sptr;
1101 stack_size = cctx->ssize; 1412 stack_size = cctx->ssize;
1102 } 1413 }
1103 1414
1104 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1415 #if CORO_USE_VALGRIND
1416 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1417 #endif
1418
1105 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1419 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1106 1420
1107 return cctx; 1421 return cctx;
1108} 1422}
1109 1423
… …
1111cctx_destroy (coro_cctx *cctx) 1425cctx_destroy (coro_cctx *cctx)
1112{ 1426{
1113 if (!cctx) 1427 if (!cctx)
1114 return; 1428 return;
1115 1429
1430 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1431
1116 --cctx_count; 1432 --cctx_count;
1433 coro_destroy (&cctx->cctx);
1117 1434
1435 /* coro_transfer creates new, empty cctx's */
1436 if (cctx->sptr)
1437 {
1118#if CORO_USE_VALGRIND 1438 #if CORO_USE_VALGRIND
1119 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1439 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1120#endif 1440 #endif
1121 1441
1122#if HAVE_MMAP 1442#if HAVE_MMAP
1123 if (cctx->flags & CC_MAPPED) 1443 if (cctx->flags & CC_MAPPED)
1124 munmap (cctx->sptr, cctx->ssize); 1444 munmap (cctx->sptr, cctx->ssize);
1125 else 1445 else
1126#endif 1446#endif
1127 Safefree (cctx->sptr); 1447 Safefree (cctx->sptr);
1448 }
1128 1449
1129 Safefree (cctx); 1450 Safefree (cctx);
1130} 1451}
1131 1452
1132/* wether this cctx should be destructed */ 1453/* wether this cctx should be destructed */
1133#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1454#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1134 1455
1135static coro_cctx * 1456static coro_cctx *
1136cctx_get (pTHX) 1457cctx_get (pTHX)
1137{ 1458{
1138 while (expect_true (cctx_first)) 1459 while (expect_true (cctx_first))
… …
1145 return cctx; 1466 return cctx;
1146 1467
1147 cctx_destroy (cctx); 1468 cctx_destroy (cctx);
1148 } 1469 }
1149 1470
1150 return cctx_new (); 1471 return cctx_new_run ();
1151} 1472}
1152 1473
1153static void 1474static void
1154cctx_put (coro_cctx *cctx) 1475cctx_put (coro_cctx *cctx)
1155{ 1476{
1477 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1478
1156 /* free another cctx if overlimit */ 1479 /* free another cctx if overlimit */
1157 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1480 if (expect_false (cctx_idle >= cctx_max_idle))
1158 { 1481 {
1159 coro_cctx *first = cctx_first; 1482 coro_cctx *first = cctx_first;
1160 cctx_first = first->next; 1483 cctx_first = first->next;
1161 --cctx_idle; 1484 --cctx_idle;
1162 1485
… …
1171/** coroutine switching *****************************************************/ 1494/** coroutine switching *****************************************************/
1172 1495
1173static void 1496static void
1174transfer_check (pTHX_ struct coro *prev, struct coro *next) 1497transfer_check (pTHX_ struct coro *prev, struct coro *next)
1175{ 1498{
1499 /* TODO: throwing up here is considered harmful */
1500
1176 if (expect_true (prev != next)) 1501 if (expect_true (prev != next))
1177 { 1502 {
1178 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1503 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1179 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1504 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1180 1505
1181 if (expect_false (next->flags & CF_RUNNING))
1182 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1183
1184 if (expect_false (next->flags & CF_DESTROYED)) 1506 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1185 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1507 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1186 1508
1187#if !PERL_VERSION_ATLEAST (5,10,0) 1509#if !PERL_VERSION_ATLEAST (5,10,0)
1188 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1510 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1189 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1511 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1190#endif 1512#endif
1191 } 1513 }
1192} 1514}
1193 1515
1194/* always use the TRANSFER macro */ 1516/* always use the TRANSFER macro */
1195static void NOINLINE 1517static void NOINLINE /* noinline so we have a fixed stackframe */
1196transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1518transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1197{ 1519{
1198 dSTACKLEVEL; 1520 dSTACKLEVEL;
1199 static volatile int has_throw;
1200 1521
1201 /* sometimes transfer is only called to set idle_sp */ 1522 /* sometimes transfer is only called to set idle_sp */
1202 if (expect_false (!next)) 1523 if (expect_false (!prev))
1203 { 1524 {
1204 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1525 cctx_current->idle_sp = STACKLEVEL;
1205 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1526 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1206 } 1527 }
1207 else if (expect_true (prev != next)) 1528 else if (expect_true (prev != next))
1208 { 1529 {
1209 coro_cctx *prev__cctx; 1530 coro_cctx *cctx_prev;
1210 1531
1211 if (expect_false (prev->flags & CF_NEW)) 1532 if (expect_false (prev->flags & CF_NEW))
1212 { 1533 {
1213 /* create a new empty context */ 1534 /* create a new empty/source context */
1214 Newz (0, prev->cctx, 1, coro_cctx);
1215 prev->flags &= ~CF_NEW; 1535 prev->flags &= ~CF_NEW;
1216 prev->flags |= CF_RUNNING; 1536 prev->flags |= CF_RUNNING;
1217 } 1537 }
1218 1538
1219 prev->flags &= ~CF_RUNNING; 1539 prev->flags &= ~CF_RUNNING;
1220 next->flags |= CF_RUNNING; 1540 next->flags |= CF_RUNNING;
1221
1222 LOCK;
1223 1541
1224 /* first get rid of the old state */ 1542 /* first get rid of the old state */
1225 save_perl (aTHX_ prev); 1543 save_perl (aTHX_ prev);
1226 1544
1227 if (expect_false (next->flags & CF_NEW)) 1545 if (expect_false (next->flags & CF_NEW))
… …
1232 coro_setup (aTHX_ next); 1550 coro_setup (aTHX_ next);
1233 } 1551 }
1234 else 1552 else
1235 load_perl (aTHX_ next); 1553 load_perl (aTHX_ next);
1236 1554
1237 prev__cctx = prev->cctx;
1238
1239 /* possibly "free" the cctx */ 1555 /* possibly untie and reuse the cctx */
1240 if (expect_true ( 1556 if (expect_true (
1241 prev__cctx->idle_sp == STACKLEVEL 1557 cctx_current->idle_sp == STACKLEVEL
1242 && !(prev__cctx->flags & CC_TRACE) 1558 && !(cctx_current->flags & CC_TRACE)
1243 && !force_cctx 1559 && !force_cctx
1244 )) 1560 ))
1245 { 1561 {
1246 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1562 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1247 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1563 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1248 1564
1249 prev->cctx = 0;
1250
1251 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1565 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1252 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1566 /* without this the next cctx_get might destroy the running cctx while still in use */
1253 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1567 if (expect_false (CCTX_EXPIRED (cctx_current)))
1254 if (!next->cctx) 1568 if (expect_true (!next->cctx))
1255 next->cctx = cctx_get (aTHX); 1569 next->cctx = cctx_get (aTHX);
1256 1570
1257 cctx_put (prev__cctx); 1571 cctx_put (cctx_current);
1258 } 1572 }
1573 else
1574 prev->cctx = cctx_current;
1259 1575
1260 ++next->usecount; 1576 ++next->usecount;
1261 1577
1262 if (expect_true (!next->cctx)) 1578 cctx_prev = cctx_current;
1263 next->cctx = cctx_get (aTHX); 1579 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1264 1580
1265 has_throw = !!next->throw; 1581 next->cctx = 0;
1266 1582
1267 if (expect_false (prev__cctx != next->cctx)) 1583 if (expect_false (cctx_prev != cctx_current))
1268 { 1584 {
1269 prev__cctx->top_env = PL_top_env; 1585 cctx_prev->top_env = PL_top_env;
1270 PL_top_env = next->cctx->top_env; 1586 PL_top_env = cctx_current->top_env;
1271 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1587 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1272 } 1588 }
1273 1589
1274 free_coro_mortal (aTHX); 1590 transfer_tail (aTHX);
1275 UNLOCK;
1276
1277 if (expect_false (has_throw))
1278 {
1279 struct coro *coro = SvSTATE (coro_current);
1280
1281 if (coro->throw)
1282 {
1283 SV *exception = coro->throw;
1284 coro->throw = 0;
1285 sv_setsv (ERRSV, exception);
1286 croak (0);
1287 }
1288 }
1289 } 1591 }
1290} 1592}
1291
1292struct transfer_args
1293{
1294 struct coro *prev, *next;
1295};
1296 1593
1297#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1594#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1298#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1595#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1299 1596
1300/** high level stuff ********************************************************/ 1597/** high level stuff ********************************************************/
… …
1302static int 1599static int
1303coro_state_destroy (pTHX_ struct coro *coro) 1600coro_state_destroy (pTHX_ struct coro *coro)
1304{ 1601{
1305 if (coro->flags & CF_DESTROYED) 1602 if (coro->flags & CF_DESTROYED)
1306 return 0; 1603 return 0;
1604
1605 if (coro->on_destroy && !PL_dirty)
1606 coro->on_destroy (aTHX_ coro);
1307 1607
1308 coro->flags |= CF_DESTROYED; 1608 coro->flags |= CF_DESTROYED;
1309 1609
1310 if (coro->flags & CF_READY) 1610 if (coro->flags & CF_READY)
1311 { 1611 {
1312 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1612 /* reduce nready, as destroying a ready coro effectively unreadies it */
1313 /* alternative: look through all ready queues and remove the coro */ 1613 /* alternative: look through all ready queues and remove the coro */
1314 LOCK;
1315 --coro_nready; 1614 --coro_nready;
1316 UNLOCK;
1317 } 1615 }
1318 else 1616 else
1319 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1617 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1320 1618
1321 if (coro->mainstack && coro->mainstack != main_mainstack) 1619 if (coro->mainstack
1322 { 1620 && coro->mainstack != main_mainstack
1323 struct coro temp; 1621 && coro->slot
1324 1622 && !PL_dirty)
1325 if (coro->flags & CF_RUNNING)
1326 croak ("FATAL: tried to destroy currently running coroutine");
1327
1328 save_perl (aTHX_ &temp);
1329 load_perl (aTHX_ coro);
1330
1331 coro_destroy (aTHX_ coro); 1623 coro_destruct_perl (aTHX_ coro);
1332
1333 load_perl (aTHX_ &temp);
1334
1335 coro->slot = 0;
1336 }
1337 1624
1338 cctx_destroy (coro->cctx); 1625 cctx_destroy (coro->cctx);
1626 SvREFCNT_dec (coro->startcv);
1339 SvREFCNT_dec (coro->args); 1627 SvREFCNT_dec (coro->args);
1628 SvREFCNT_dec (CORO_THROW);
1340 1629
1341 if (coro->next) coro->next->prev = coro->prev; 1630 if (coro->next) coro->next->prev = coro->prev;
1342 if (coro->prev) coro->prev->next = coro->next; 1631 if (coro->prev) coro->prev->next = coro->next;
1343 if (coro == coro_first) coro_first = coro->next; 1632 if (coro == coro_first) coro_first = coro->next;
1344 1633
… …
1382# define MGf_DUP 0 1671# define MGf_DUP 0
1383#endif 1672#endif
1384}; 1673};
1385 1674
1386static void 1675static void
1387prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1676prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1388{ 1677{
1389 ta->prev = SvSTATE (prev_sv); 1678 ta->prev = SvSTATE (prev_sv);
1390 ta->next = SvSTATE (next_sv); 1679 ta->next = SvSTATE (next_sv);
1391 TRANSFER_CHECK (*ta); 1680 TRANSFER_CHECK (*ta);
1392} 1681}
1393 1682
1394static void 1683static void
1395api_transfer (SV *prev_sv, SV *next_sv) 1684api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1396{ 1685{
1397 dTHX;
1398 struct transfer_args ta; 1686 struct coro_transfer_args ta;
1399 1687
1400 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1688 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1401 TRANSFER (ta, 1); 1689 TRANSFER (ta, 1);
1402} 1690}
1403 1691
1692/*****************************************************************************/
1693/* gensub: simple closure generation utility */
1694
1695#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1696
1697/* create a closure from XS, returns a code reference */
1698/* the arg can be accessed via GENSUB_ARG from the callback */
1699/* the callback must use dXSARGS/XSRETURN */
1700static SV *
1701gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1702{
1703 CV *cv = (CV *)newSV (0);
1704
1705 sv_upgrade ((SV *)cv, SVt_PVCV);
1706
1707 CvANON_on (cv);
1708 CvISXSUB_on (cv);
1709 CvXSUB (cv) = xsub;
1710 GENSUB_ARG = arg;
1711
1712 return newRV_noinc ((SV *)cv);
1713}
1714
1404/** Coro ********************************************************************/ 1715/** Coro ********************************************************************/
1405 1716
1406static void 1717INLINE void
1407coro_enq (pTHX_ SV *coro_sv) 1718coro_enq (pTHX_ struct coro *coro)
1408{ 1719{
1409 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1720 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1410}
1411 1721
1412static SV * 1722 SvREFCNT_inc_NN (coro->hv);
1723
1724 coro->next_ready = 0;
1725 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1726 ready [1] = coro;
1727}
1728
1729INLINE struct coro *
1413coro_deq (pTHX) 1730coro_deq (pTHX)
1414{ 1731{
1415 int prio; 1732 int prio;
1416 1733
1417 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1734 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1418 if (AvFILLp (coro_ready [prio]) >= 0) 1735 {
1419 return av_shift (coro_ready [prio]); 1736 struct coro **ready = coro_ready [prio];
1737
1738 if (ready [0])
1739 {
1740 struct coro *coro = ready [0];
1741 ready [0] = coro->next_ready;
1742 return coro;
1743 }
1744 }
1420 1745
1421 return 0; 1746 return 0;
1422} 1747}
1423 1748
1424static int 1749static int
1425api_ready (SV *coro_sv) 1750api_ready (pTHX_ SV *coro_sv)
1426{ 1751{
1427 dTHX;
1428 struct coro *coro; 1752 struct coro *coro;
1429 SV *sv_hook; 1753 SV *sv_hook;
1430 void (*xs_hook)(void); 1754 void (*xs_hook)(void);
1431 1755
1432 if (SvROK (coro_sv))
1433 coro_sv = SvRV (coro_sv);
1434
1435 coro = SvSTATE (coro_sv); 1756 coro = SvSTATE (coro_sv);
1436 1757
1437 if (coro->flags & CF_READY) 1758 if (coro->flags & CF_READY)
1438 return 0; 1759 return 0;
1439 1760
1440 coro->flags |= CF_READY; 1761 coro->flags |= CF_READY;
1441 1762
1442 LOCK;
1443
1444 sv_hook = coro_nready ? 0 : coro_readyhook; 1763 sv_hook = coro_nready ? 0 : coro_readyhook;
1445 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1764 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1446 1765
1447 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1766 coro_enq (aTHX_ coro);
1448 ++coro_nready; 1767 ++coro_nready;
1449 1768
1450 UNLOCK;
1451
1452 if (sv_hook) 1769 if (sv_hook)
1453 { 1770 {
1454 dSP; 1771 dSP;
1455 1772
1456 ENTER; 1773 ENTER;
1457 SAVETMPS; 1774 SAVETMPS;
1458 1775
1459 PUSHMARK (SP); 1776 PUSHMARK (SP);
1460 PUTBACK; 1777 PUTBACK;
1461 call_sv (sv_hook, G_DISCARD); 1778 call_sv (sv_hook, G_VOID | G_DISCARD);
1462 SPAGAIN;
1463 1779
1464 FREETMPS; 1780 FREETMPS;
1465 LEAVE; 1781 LEAVE;
1466 } 1782 }
1467 1783
… …
1470 1786
1471 return 1; 1787 return 1;
1472} 1788}
1473 1789
1474static int 1790static int
1475api_is_ready (SV *coro_sv) 1791api_is_ready (pTHX_ SV *coro_sv)
1476{ 1792{
1477 dTHX;
1478 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1793 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1479} 1794}
1480 1795
1481static void 1796/* expects to own a reference to next->hv */
1797INLINE void
1482prepare_schedule (pTHX_ struct transfer_args *ta) 1798prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1483{ 1799{
1484 SV *prev_sv, *next_sv;
1485
1486 for (;;)
1487 {
1488 LOCK;
1489 next_sv = coro_deq (aTHX);
1490
1491 /* nothing to schedule: call the idle handler */
1492 if (expect_false (!next_sv))
1493 {
1494 dSP;
1495 UNLOCK;
1496
1497 ENTER;
1498 SAVETMPS;
1499
1500 PUSHMARK (SP);
1501 PUTBACK;
1502 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1503 SPAGAIN;
1504
1505 FREETMPS;
1506 LEAVE;
1507 continue;
1508 }
1509
1510 ta->next = SvSTATE (next_sv);
1511
1512 /* cannot transfer to destroyed coros, skip and look for next */
1513 if (expect_false (ta->next->flags & CF_DESTROYED))
1514 {
1515 UNLOCK;
1516 SvREFCNT_dec (next_sv);
1517 /* coro_nready is already taken care of by destroy */
1518 continue;
1519 }
1520
1521 --coro_nready;
1522 UNLOCK;
1523 break;
1524 }
1525
1526 /* free this only after the transfer */
1527 prev_sv = SvRV (coro_current); 1800 SV *prev_sv = SvRV (coro_current);
1801
1528 ta->prev = SvSTATE (prev_sv); 1802 ta->prev = SvSTATE_hv (prev_sv);
1803 ta->next = next;
1804
1529 TRANSFER_CHECK (*ta); 1805 TRANSFER_CHECK (*ta);
1530 assert (ta->next->flags & CF_READY); 1806
1531 ta->next->flags &= ~CF_READY;
1532 SvRV_set (coro_current, next_sv); 1807 SvRV_set (coro_current, (SV *)next->hv);
1533 1808
1534 LOCK;
1535 free_coro_mortal (aTHX); 1809 free_coro_mortal (aTHX);
1536 coro_mortal = prev_sv; 1810 coro_mortal = prev_sv;
1537 UNLOCK;
1538} 1811}
1539 1812
1540static void 1813static void
1814prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1815{
1816 for (;;)
1817 {
1818 struct coro *next = coro_deq (aTHX);
1819
1820 if (expect_true (next))
1821 {
1822 /* cannot transfer to destroyed coros, skip and look for next */
1823 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1824 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1825 else
1826 {
1827 next->flags &= ~CF_READY;
1828 --coro_nready;
1829
1830 prepare_schedule_to (aTHX_ ta, next);
1831 break;
1832 }
1833 }
1834 else
1835 {
1836 /* nothing to schedule: call the idle handler */
1837 if (SvROK (sv_idle)
1838 && SvOBJECT (SvRV (sv_idle)))
1839 {
1840 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1841 api_ready (aTHX_ SvRV (sv_idle));
1842 --coro_nready;
1843 }
1844 else
1845 {
1846 dSP;
1847
1848 ENTER;
1849 SAVETMPS;
1850
1851 PUSHMARK (SP);
1852 PUTBACK;
1853 call_sv (sv_idle, G_VOID | G_DISCARD);
1854
1855 FREETMPS;
1856 LEAVE;
1857 }
1858 }
1859 }
1860}
1861
1862INLINE void
1541prepare_cede (pTHX_ struct transfer_args *ta) 1863prepare_cede (pTHX_ struct coro_transfer_args *ta)
1542{ 1864{
1543 api_ready (coro_current); 1865 api_ready (aTHX_ coro_current);
1544 prepare_schedule (aTHX_ ta); 1866 prepare_schedule (aTHX_ ta);
1545} 1867}
1546 1868
1869INLINE void
1870prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1871{
1872 SV *prev = SvRV (coro_current);
1873
1874 if (coro_nready)
1875 {
1876 prepare_schedule (aTHX_ ta);
1877 api_ready (aTHX_ prev);
1878 }
1879 else
1880 prepare_nop (aTHX_ ta);
1881}
1882
1883static void
1884api_schedule (pTHX)
1885{
1886 struct coro_transfer_args ta;
1887
1888 prepare_schedule (aTHX_ &ta);
1889 TRANSFER (ta, 1);
1890}
1891
1892static void
1893api_schedule_to (pTHX_ SV *coro_sv)
1894{
1895 struct coro_transfer_args ta;
1896 struct coro *next = SvSTATE (coro_sv);
1897
1898 SvREFCNT_inc_NN (coro_sv);
1899 prepare_schedule_to (aTHX_ &ta, next);
1900}
1901
1547static int 1902static int
1548prepare_cede_notself (pTHX_ struct transfer_args *ta) 1903api_cede (pTHX)
1549{ 1904{
1550 if (coro_nready) 1905 struct coro_transfer_args ta;
1551 { 1906
1552 SV *prev = SvRV (coro_current);
1553 prepare_schedule (aTHX_ ta); 1907 prepare_cede (aTHX_ &ta);
1554 api_ready (prev); 1908
1909 if (expect_true (ta.prev != ta.next))
1910 {
1911 TRANSFER (ta, 1);
1555 return 1; 1912 return 1;
1556 } 1913 }
1557 else 1914 else
1558 return 0; 1915 return 0;
1559} 1916}
1560 1917
1561static void
1562api_schedule (void)
1563{
1564 dTHX;
1565 struct transfer_args ta;
1566
1567 prepare_schedule (aTHX_ &ta);
1568 TRANSFER (ta, 1);
1569}
1570
1571static int 1918static int
1572api_cede (void) 1919api_cede_notself (pTHX)
1573{ 1920{
1574 dTHX; 1921 if (coro_nready)
1922 {
1575 struct transfer_args ta; 1923 struct coro_transfer_args ta;
1576 1924
1577 prepare_cede (aTHX_ &ta); 1925 prepare_cede_notself (aTHX_ &ta);
1578
1579 if (expect_true (ta.prev != ta.next))
1580 {
1581 TRANSFER (ta, 1); 1926 TRANSFER (ta, 1);
1582 return 1; 1927 return 1;
1583 } 1928 }
1584 else 1929 else
1585 return 0; 1930 return 0;
1586} 1931}
1587 1932
1588static int 1933static void
1589api_cede_notself (void)
1590{
1591 dTHX;
1592 struct transfer_args ta;
1593
1594 if (prepare_cede_notself (aTHX_ &ta))
1595 {
1596 TRANSFER (ta, 1);
1597 return 1;
1598 }
1599 else
1600 return 0;
1601}
1602
1603static void
1604api_trace (SV *coro_sv, int flags) 1934api_trace (pTHX_ SV *coro_sv, int flags)
1605{ 1935{
1606 dTHX;
1607 struct coro *coro = SvSTATE (coro_sv); 1936 struct coro *coro = SvSTATE (coro_sv);
1608 1937
1938 if (coro->flags & CF_RUNNING)
1939 croak ("cannot enable tracing on a running coroutine, caught");
1940
1609 if (flags & CC_TRACE) 1941 if (flags & CC_TRACE)
1610 { 1942 {
1611 if (!coro->cctx) 1943 if (!coro->cctx)
1612 coro->cctx = cctx_new (); 1944 coro->cctx = cctx_new_run ();
1613 else if (!(coro->cctx->flags & CC_TRACE)) 1945 else if (!(coro->cctx->flags & CC_TRACE))
1614 croak ("cannot enable tracing on coroutine with custom stack"); 1946 croak ("cannot enable tracing on coroutine with custom stack, caught");
1615 1947
1616 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1948 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1617 } 1949 }
1618 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1950 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1619 { 1951 {
… …
1624 else 1956 else
1625 coro->slot->runops = RUNOPS_DEFAULT; 1957 coro->slot->runops = RUNOPS_DEFAULT;
1626 } 1958 }
1627} 1959}
1628 1960
1961static void
1962coro_call_on_destroy (pTHX_ struct coro *coro)
1963{
1964 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1965 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1966
1967 if (on_destroyp)
1968 {
1969 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1970
1971 while (AvFILLp (on_destroy) >= 0)
1972 {
1973 dSP; /* don't disturb outer sp */
1974 SV *cb = av_pop (on_destroy);
1975
1976 PUSHMARK (SP);
1977
1978 if (statusp)
1979 {
1980 int i;
1981 AV *status = (AV *)SvRV (*statusp);
1982 EXTEND (SP, AvFILLp (status) + 1);
1983
1984 for (i = 0; i <= AvFILLp (status); ++i)
1985 PUSHs (AvARRAY (status)[i]);
1986 }
1987
1988 PUTBACK;
1989 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1990 }
1991 }
1992}
1993
1994static void
1995slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 int i;
1998 HV *hv = (HV *)SvRV (coro_current);
1999 AV *av = newAV ();
2000
2001 av_extend (av, items - 1);
2002 for (i = 0; i < items; ++i)
2003 av_push (av, SvREFCNT_inc_NN (arg [i]));
2004
2005 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2006
2007 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2008 api_ready (aTHX_ sv_manager);
2009
2010 frame->prepare = prepare_schedule;
2011 frame->check = slf_check_repeat;
2012
2013 /* as a minor optimisation, we could unwind all stacks here */
2014 /* but that puts extra pressure on pp_slf, and is not worth much */
2015 /*coro_unwind_stacks (aTHX);*/
2016}
2017
2018/*****************************************************************************/
2019/* async pool handler */
2020
2021static int
2022slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2023{
2024 HV *hv = (HV *)SvRV (coro_current);
2025 struct coro *coro = (struct coro *)frame->data;
2026
2027 if (!coro->invoke_cb)
2028 return 1; /* loop till we have invoke */
2029 else
2030 {
2031 hv_store (hv, "desc", sizeof ("desc") - 1,
2032 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2033
2034 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2035
2036 {
2037 dSP;
2038 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2039 PUTBACK;
2040 }
2041
2042 SvREFCNT_dec (GvAV (PL_defgv));
2043 GvAV (PL_defgv) = coro->invoke_av;
2044 coro->invoke_av = 0;
2045
2046 return 0;
2047 }
2048}
2049
2050static void
2051slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2052{
2053 HV *hv = (HV *)SvRV (coro_current);
2054 struct coro *coro = SvSTATE_hv ((SV *)hv);
2055
2056 if (expect_true (coro->saved_deffh))
2057 {
2058 /* subsequent iteration */
2059 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2060 coro->saved_deffh = 0;
2061
2062 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2063 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2064 {
2065 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2066 coro->invoke_av = newAV ();
2067
2068 frame->prepare = prepare_nop;
2069 }
2070 else
2071 {
2072 av_clear (GvAV (PL_defgv));
2073 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2074
2075 coro->prio = 0;
2076
2077 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2078 api_trace (aTHX_ coro_current, 0);
2079
2080 frame->prepare = prepare_schedule;
2081 av_push (av_async_pool, SvREFCNT_inc (hv));
2082 }
2083 }
2084 else
2085 {
2086 /* first iteration, simply fall through */
2087 frame->prepare = prepare_nop;
2088 }
2089
2090 frame->check = slf_check_pool_handler;
2091 frame->data = (void *)coro;
2092}
2093
2094/*****************************************************************************/
2095/* rouse callback */
2096
2097#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2098
2099static void
2100coro_rouse_callback (pTHX_ CV *cv)
2101{
2102 dXSARGS;
2103 SV *data = (SV *)GENSUB_ARG;
2104
2105 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2106 {
2107 /* first call, set args */
2108 SV *coro = SvRV (data);
2109 AV *av = newAV ();
2110
2111 SvRV_set (data, (SV *)av);
2112
2113 /* better take a full copy of the arguments */
2114 while (items--)
2115 av_store (av, items, newSVsv (ST (items)));
2116
2117 api_ready (aTHX_ coro);
2118 SvREFCNT_dec (coro);
2119 }
2120
2121 XSRETURN_EMPTY;
2122}
2123
2124static int
2125slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2126{
2127 SV *data = (SV *)frame->data;
2128
2129 if (CORO_THROW)
2130 return 0;
2131
2132 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2133 return 1;
2134
2135 /* now push all results on the stack */
2136 {
2137 dSP;
2138 AV *av = (AV *)SvRV (data);
2139 int i;
2140
2141 EXTEND (SP, AvFILLp (av) + 1);
2142 for (i = 0; i <= AvFILLp (av); ++i)
2143 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2144
2145 /* we have stolen the elements, so set length to zero and free */
2146 AvFILLp (av) = -1;
2147 av_undef (av);
2148
2149 PUTBACK;
2150 }
2151
2152 return 0;
2153}
2154
2155static void
2156slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2157{
2158 SV *cb;
2159
2160 if (items)
2161 cb = arg [0];
2162 else
2163 {
2164 struct coro *coro = SvSTATE_current;
2165
2166 if (!coro->rouse_cb)
2167 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2168
2169 cb = sv_2mortal (coro->rouse_cb);
2170 coro->rouse_cb = 0;
2171 }
2172
2173 if (!SvROK (cb)
2174 || SvTYPE (SvRV (cb)) != SVt_PVCV
2175 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2176 croak ("Coro::rouse_wait called with illegal callback argument,");
2177
2178 {
2179 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2180 SV *data = (SV *)GENSUB_ARG;
2181
2182 frame->data = (void *)data;
2183 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2184 frame->check = slf_check_rouse_wait;
2185 }
2186}
2187
2188static SV *
2189coro_new_rouse_cb (pTHX)
2190{
2191 HV *hv = (HV *)SvRV (coro_current);
2192 struct coro *coro = SvSTATE_hv (hv);
2193 SV *data = newRV_inc ((SV *)hv);
2194 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2195
2196 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2197 SvREFCNT_dec (data); /* magicext increases the refcount */
2198
2199 SvREFCNT_dec (coro->rouse_cb);
2200 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2201
2202 return cb;
2203}
2204
2205/*****************************************************************************/
2206/* schedule-like-function opcode (SLF) */
2207
2208static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2209static const CV *slf_cv;
2210static SV **slf_argv;
2211static int slf_argc, slf_arga; /* count, allocated */
2212static I32 slf_ax; /* top of stack, for restore */
2213
2214/* this restores the stack in the case we patched the entersub, to */
2215/* recreate the stack frame as perl will on following calls */
2216/* since entersub cleared the stack */
2217static OP *
2218pp_restore (pTHX)
2219{
2220 int i;
2221 SV **SP = PL_stack_base + slf_ax;
2222
2223 PUSHMARK (SP);
2224
2225 EXTEND (SP, slf_argc + 1);
2226
2227 for (i = 0; i < slf_argc; ++i)
2228 PUSHs (sv_2mortal (slf_argv [i]));
2229
2230 PUSHs ((SV *)CvGV (slf_cv));
2231
2232 RETURNOP (slf_restore.op_first);
2233}
2234
2235static void
2236slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2237{
2238 SV **arg = (SV **)slf_frame.data;
2239
2240 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2241}
2242
2243static void
2244slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2245{
2246 if (items != 2)
2247 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2248
2249 frame->prepare = slf_prepare_transfer;
2250 frame->check = slf_check_nop;
2251 frame->data = (void *)arg; /* let's hope it will stay valid */
2252}
2253
2254static void
2255slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2256{
2257 frame->prepare = prepare_schedule;
2258 frame->check = slf_check_nop;
2259}
2260
2261static void
2262slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2263{
2264 struct coro *next = (struct coro *)slf_frame.data;
2265
2266 SvREFCNT_inc_NN (next->hv);
2267 prepare_schedule_to (aTHX_ ta, next);
2268}
2269
2270static void
2271slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2272{
2273 if (!items)
2274 croak ("Coro::schedule_to expects a coroutine argument, caught");
2275
2276 frame->data = (void *)SvSTATE (arg [0]);
2277 frame->prepare = slf_prepare_schedule_to;
2278 frame->check = slf_check_nop;
2279}
2280
2281static void
2282slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 api_ready (aTHX_ SvRV (coro_current));
2285
2286 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2287}
2288
2289static void
2290slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 frame->prepare = prepare_cede;
2293 frame->check = slf_check_nop;
2294}
2295
2296static void
2297slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 frame->prepare = prepare_cede_notself;
2300 frame->check = slf_check_nop;
2301}
2302
2303/*
2304 * these not obviously related functions are all rolled into one
2305 * function to increase chances that they all will call transfer with the same
2306 * stack offset
2307 * SLF stands for "schedule-like-function".
2308 */
2309static OP *
2310pp_slf (pTHX)
2311{
2312 I32 checkmark; /* mark SP to see how many elements check has pushed */
2313
2314 /* set up the slf frame, unless it has already been set-up */
2315 /* the latter happens when a new coro has been started */
2316 /* or when a new cctx was attached to an existing coroutine */
2317 if (expect_true (!slf_frame.prepare))
2318 {
2319 /* first iteration */
2320 dSP;
2321 SV **arg = PL_stack_base + TOPMARK + 1;
2322 int items = SP - arg; /* args without function object */
2323 SV *gv = *sp;
2324
2325 /* do a quick consistency check on the "function" object, and if it isn't */
2326 /* for us, divert to the real entersub */
2327 if (SvTYPE (gv) != SVt_PVGV
2328 || !GvCV (gv)
2329 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2330 return PL_ppaddr[OP_ENTERSUB](aTHX);
2331
2332 if (!(PL_op->op_flags & OPf_STACKED))
2333 {
2334 /* ampersand-form of call, use @_ instead of stack */
2335 AV *av = GvAV (PL_defgv);
2336 arg = AvARRAY (av);
2337 items = AvFILLp (av) + 1;
2338 }
2339
2340 /* now call the init function, which needs to set up slf_frame */
2341 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2342 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2343
2344 /* pop args */
2345 SP = PL_stack_base + POPMARK;
2346
2347 PUTBACK;
2348 }
2349
2350 /* now that we have a slf_frame, interpret it! */
2351 /* we use a callback system not to make the code needlessly */
2352 /* complicated, but so we can run multiple perl coros from one cctx */
2353
2354 do
2355 {
2356 struct coro_transfer_args ta;
2357
2358 slf_frame.prepare (aTHX_ &ta);
2359 TRANSFER (ta, 0);
2360
2361 checkmark = PL_stack_sp - PL_stack_base;
2362 }
2363 while (slf_frame.check (aTHX_ &slf_frame));
2364
2365 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2366
2367 /* exception handling */
2368 if (expect_false (CORO_THROW))
2369 {
2370 SV *exception = sv_2mortal (CORO_THROW);
2371
2372 CORO_THROW = 0;
2373 sv_setsv (ERRSV, exception);
2374 croak (0);
2375 }
2376
2377 /* return value handling - mostly like entersub */
2378 /* make sure we put something on the stack in scalar context */
2379 if (GIMME_V == G_SCALAR)
2380 {
2381 dSP;
2382 SV **bot = PL_stack_base + checkmark;
2383
2384 if (sp == bot) /* too few, push undef */
2385 bot [1] = &PL_sv_undef;
2386 else if (sp != bot + 1) /* too many, take last one */
2387 bot [1] = *sp;
2388
2389 SP = bot + 1;
2390
2391 PUTBACK;
2392 }
2393
2394 return NORMAL;
2395}
2396
2397static void
2398api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2399{
2400 int i;
2401 SV **arg = PL_stack_base + ax;
2402 int items = PL_stack_sp - arg + 1;
2403
2404 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2405
2406 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2407 && PL_op->op_ppaddr != pp_slf)
2408 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2409
2410 CvFLAGS (cv) |= CVf_SLF;
2411 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2412 slf_cv = cv;
2413
2414 /* we patch the op, and then re-run the whole call */
2415 /* we have to put the same argument on the stack for this to work */
2416 /* and this will be done by pp_restore */
2417 slf_restore.op_next = (OP *)&slf_restore;
2418 slf_restore.op_type = OP_CUSTOM;
2419 slf_restore.op_ppaddr = pp_restore;
2420 slf_restore.op_first = PL_op;
2421
2422 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2423
2424 if (PL_op->op_flags & OPf_STACKED)
2425 {
2426 if (items > slf_arga)
2427 {
2428 slf_arga = items;
2429 free (slf_argv);
2430 slf_argv = malloc (slf_arga * sizeof (SV *));
2431 }
2432
2433 slf_argc = items;
2434
2435 for (i = 0; i < items; ++i)
2436 slf_argv [i] = SvREFCNT_inc (arg [i]);
2437 }
2438 else
2439 slf_argc = 0;
2440
2441 PL_op->op_ppaddr = pp_slf;
2442 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2443
2444 PL_op = (OP *)&slf_restore;
2445}
2446
2447/*****************************************************************************/
2448/* dynamic wind */
2449
2450static void
2451on_enterleave_call (pTHX_ SV *cb)
2452{
2453 dSP;
2454
2455 PUSHSTACK;
2456
2457 PUSHMARK (SP);
2458 PUTBACK;
2459 call_sv (cb, G_VOID | G_DISCARD);
2460 SPAGAIN;
2461
2462 POPSTACK;
2463}
2464
2465static SV *
2466coro_avp_pop_and_free (pTHX_ AV **avp)
2467{
2468 AV *av = *avp;
2469 SV *res = av_pop (av);
2470
2471 if (AvFILLp (av) < 0)
2472 {
2473 *avp = 0;
2474 SvREFCNT_dec (av);
2475 }
2476
2477 return res;
2478}
2479
2480static void
2481coro_pop_on_enter (pTHX_ void *coro)
2482{
2483 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2484 SvREFCNT_dec (cb);
2485}
2486
2487static void
2488coro_pop_on_leave (pTHX_ void *coro)
2489{
2490 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2491 on_enterleave_call (aTHX_ sv_2mortal (cb));
2492}
2493
2494/*****************************************************************************/
2495/* PerlIO::cede */
2496
2497typedef struct
2498{
2499 PerlIOBuf base;
2500 NV next, every;
2501} PerlIOCede;
2502
2503static IV
2504PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2505{
2506 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2507
2508 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2509 self->next = nvtime () + self->every;
2510
2511 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2512}
2513
2514static SV *
2515PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2516{
2517 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2518
2519 return newSVnv (self->every);
2520}
2521
2522static IV
2523PerlIOCede_flush (pTHX_ PerlIO *f)
2524{
2525 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2526 double now = nvtime ();
2527
2528 if (now >= self->next)
2529 {
2530 api_cede (aTHX);
2531 self->next = now + self->every;
2532 }
2533
2534 return PerlIOBuf_flush (aTHX_ f);
2535}
2536
2537static PerlIO_funcs PerlIO_cede =
2538{
2539 sizeof(PerlIO_funcs),
2540 "cede",
2541 sizeof(PerlIOCede),
2542 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2543 PerlIOCede_pushed,
2544 PerlIOBuf_popped,
2545 PerlIOBuf_open,
2546 PerlIOBase_binmode,
2547 PerlIOCede_getarg,
2548 PerlIOBase_fileno,
2549 PerlIOBuf_dup,
2550 PerlIOBuf_read,
2551 PerlIOBuf_unread,
2552 PerlIOBuf_write,
2553 PerlIOBuf_seek,
2554 PerlIOBuf_tell,
2555 PerlIOBuf_close,
2556 PerlIOCede_flush,
2557 PerlIOBuf_fill,
2558 PerlIOBase_eof,
2559 PerlIOBase_error,
2560 PerlIOBase_clearerr,
2561 PerlIOBase_setlinebuf,
2562 PerlIOBuf_get_base,
2563 PerlIOBuf_bufsiz,
2564 PerlIOBuf_get_ptr,
2565 PerlIOBuf_get_cnt,
2566 PerlIOBuf_set_ptrcnt,
2567};
2568
2569/*****************************************************************************/
2570/* Coro::Semaphore & Coro::Signal */
2571
2572static SV *
2573coro_waitarray_new (pTHX_ int count)
2574{
2575 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2576 AV *av = newAV ();
2577 SV **ary;
2578
2579 /* unfortunately, building manually saves memory */
2580 Newx (ary, 2, SV *);
2581 AvALLOC (av) = ary;
2582#if PERL_VERSION_ATLEAST (5,10,0)
2583 AvARRAY (av) = ary;
2584#else
2585 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2586 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2587 SvPVX ((SV *)av) = (char *)ary;
2588#endif
2589 AvMAX (av) = 1;
2590 AvFILLp (av) = 0;
2591 ary [0] = newSViv (count);
2592
2593 return newRV_noinc ((SV *)av);
2594}
2595
2596/* semaphore */
2597
2598static void
2599coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2600{
2601 SV *count_sv = AvARRAY (av)[0];
2602 IV count = SvIVX (count_sv);
2603
2604 count += adjust;
2605 SvIVX (count_sv) = count;
2606
2607 /* now wake up as many waiters as are expected to lock */
2608 while (count > 0 && AvFILLp (av) > 0)
2609 {
2610 SV *cb;
2611
2612 /* swap first two elements so we can shift a waiter */
2613 AvARRAY (av)[0] = AvARRAY (av)[1];
2614 AvARRAY (av)[1] = count_sv;
2615 cb = av_shift (av);
2616
2617 if (SvOBJECT (cb))
2618 {
2619 api_ready (aTHX_ cb);
2620 --count;
2621 }
2622 else if (SvTYPE (cb) == SVt_PVCV)
2623 {
2624 dSP;
2625 PUSHMARK (SP);
2626 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2627 PUTBACK;
2628 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2629 }
2630
2631 SvREFCNT_dec (cb);
2632 }
2633}
2634
2635static void
2636coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2637{
2638 /* call $sem->adjust (0) to possibly wake up some other waiters */
2639 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2640}
2641
2642static int
2643slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2644{
2645 AV *av = (AV *)frame->data;
2646 SV *count_sv = AvARRAY (av)[0];
2647
2648 /* if we are about to throw, don't actually acquire the lock, just throw */
2649 if (CORO_THROW)
2650 return 0;
2651 else if (SvIVX (count_sv) > 0)
2652 {
2653 SvSTATE_current->on_destroy = 0;
2654
2655 if (acquire)
2656 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657 else
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2660 return 0;
2661 }
2662 else
2663 {
2664 int i;
2665 /* if we were woken up but can't down, we look through the whole */
2666 /* waiters list and only add us if we aren't in there already */
2667 /* this avoids some degenerate memory usage cases */
2668
2669 for (i = 1; i <= AvFILLp (av); ++i)
2670 if (AvARRAY (av)[i] == SvRV (coro_current))
2671 return 1;
2672
2673 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2674 return 1;
2675 }
2676}
2677
2678static int
2679slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2682}
2683
2684static int
2685slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2686{
2687 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2688}
2689
2690static void
2691slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2692{
2693 AV *av = (AV *)SvRV (arg [0]);
2694
2695 if (SvIVX (AvARRAY (av)[0]) > 0)
2696 {
2697 frame->data = (void *)av;
2698 frame->prepare = prepare_nop;
2699 }
2700 else
2701 {
2702 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2703
2704 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2705 frame->prepare = prepare_schedule;
2706
2707 /* to avoid race conditions when a woken-up coro gets terminated */
2708 /* we arrange for a temporary on_destroy that calls adjust (0) */
2709 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2710 }
2711}
2712
2713static void
2714slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2715{
2716 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2717 frame->check = slf_check_semaphore_down;
2718}
2719
2720static void
2721slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2722{
2723 if (items >= 2)
2724 {
2725 /* callback form */
2726 AV *av = (AV *)SvRV (arg [0]);
2727 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2728
2729 av_push (av, SvREFCNT_inc_NN (cb_cv));
2730
2731 if (SvIVX (AvARRAY (av)[0]) > 0)
2732 coro_semaphore_adjust (aTHX_ av, 0);
2733
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2740 frame->check = slf_check_semaphore_wait;
2741 }
2742}
2743
2744/* signal */
2745
2746static void
2747coro_signal_wake (pTHX_ AV *av, int count)
2748{
2749 SvIVX (AvARRAY (av)[0]) = 0;
2750
2751 /* now signal count waiters */
2752 while (count > 0 && AvFILLp (av) > 0)
2753 {
2754 SV *cb;
2755
2756 /* swap first two elements so we can shift a waiter */
2757 cb = AvARRAY (av)[0];
2758 AvARRAY (av)[0] = AvARRAY (av)[1];
2759 AvARRAY (av)[1] = cb;
2760
2761 cb = av_shift (av);
2762
2763 if (SvTYPE (cb) == SVt_PVCV)
2764 {
2765 dSP;
2766 PUSHMARK (SP);
2767 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2768 PUTBACK;
2769 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2770 }
2771 else
2772 {
2773 api_ready (aTHX_ cb);
2774 sv_setiv (cb, 0); /* signal waiter */
2775 }
2776
2777 SvREFCNT_dec (cb);
2778
2779 --count;
2780 }
2781}
2782
2783static int
2784slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2785{
2786 /* if we are about to throw, also stop waiting */
2787 return SvROK ((SV *)frame->data) && !CORO_THROW;
2788}
2789
2790static void
2791slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2792{
2793 AV *av = (AV *)SvRV (arg [0]);
2794
2795 if (items >= 2)
2796 {
2797 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2798 av_push (av, SvREFCNT_inc_NN (cb_cv));
2799
2800 if (SvIVX (AvARRAY (av)[0]))
2801 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2802
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else if (SvIVX (AvARRAY (av)[0]))
2807 {
2808 SvIVX (AvARRAY (av)[0]) = 0;
2809 frame->prepare = prepare_nop;
2810 frame->check = slf_check_nop;
2811 }
2812 else
2813 {
2814 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2815
2816 av_push (av, waiter);
2817
2818 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2819 frame->prepare = prepare_schedule;
2820 frame->check = slf_check_signal_wait;
2821 }
2822}
2823
2824/*****************************************************************************/
2825/* Coro::AIO */
2826
2827#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2828
2829/* helper storage struct */
2830struct io_state
2831{
2832 int errorno;
2833 I32 laststype; /* U16 in 5.10.0 */
2834 int laststatval;
2835 Stat_t statcache;
2836};
2837
2838static void
2839coro_aio_callback (pTHX_ CV *cv)
2840{
2841 dXSARGS;
2842 AV *state = (AV *)GENSUB_ARG;
2843 SV *coro = av_pop (state);
2844 SV *data_sv = newSV (sizeof (struct io_state));
2845
2846 av_extend (state, items - 1);
2847
2848 sv_upgrade (data_sv, SVt_PV);
2849 SvCUR_set (data_sv, sizeof (struct io_state));
2850 SvPOK_only (data_sv);
2851
2852 {
2853 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2854
2855 data->errorno = errno;
2856 data->laststype = PL_laststype;
2857 data->laststatval = PL_laststatval;
2858 data->statcache = PL_statcache;
2859 }
2860
2861 /* now build the result vector out of all the parameters and the data_sv */
2862 {
2863 int i;
2864
2865 for (i = 0; i < items; ++i)
2866 av_push (state, SvREFCNT_inc_NN (ST (i)));
2867 }
2868
2869 av_push (state, data_sv);
2870
2871 api_ready (aTHX_ coro);
2872 SvREFCNT_dec (coro);
2873 SvREFCNT_dec ((AV *)state);
2874}
2875
2876static int
2877slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2878{
2879 AV *state = (AV *)frame->data;
2880
2881 /* if we are about to throw, return early */
2882 /* this does not cancel the aio request, but at least */
2883 /* it quickly returns */
2884 if (CORO_THROW)
2885 return 0;
2886
2887 /* one element that is an RV? repeat! */
2888 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2889 return 1;
2890
2891 /* restore status */
2892 {
2893 SV *data_sv = av_pop (state);
2894 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2895
2896 errno = data->errorno;
2897 PL_laststype = data->laststype;
2898 PL_laststatval = data->laststatval;
2899 PL_statcache = data->statcache;
2900
2901 SvREFCNT_dec (data_sv);
2902 }
2903
2904 /* push result values */
2905 {
2906 dSP;
2907 int i;
2908
2909 EXTEND (SP, AvFILLp (state) + 1);
2910 for (i = 0; i <= AvFILLp (state); ++i)
2911 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2912
2913 PUTBACK;
2914 }
2915
2916 return 0;
2917}
2918
2919static void
2920slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2921{
2922 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2923 SV *coro_hv = SvRV (coro_current);
2924 struct coro *coro = SvSTATE_hv (coro_hv);
2925
2926 /* put our coroutine id on the state arg */
2927 av_push (state, SvREFCNT_inc_NN (coro_hv));
2928
2929 /* first see whether we have a non-zero priority and set it as AIO prio */
2930 if (coro->prio)
2931 {
2932 dSP;
2933
2934 static SV *prio_cv;
2935 static SV *prio_sv;
2936
2937 if (expect_false (!prio_cv))
2938 {
2939 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2940 prio_sv = newSViv (0);
2941 }
2942
2943 PUSHMARK (SP);
2944 sv_setiv (prio_sv, coro->prio);
2945 XPUSHs (prio_sv);
2946
2947 PUTBACK;
2948 call_sv (prio_cv, G_VOID | G_DISCARD);
2949 }
2950
2951 /* now call the original request */
2952 {
2953 dSP;
2954 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2955 int i;
2956
2957 PUSHMARK (SP);
2958
2959 /* first push all args to the stack */
2960 EXTEND (SP, items + 1);
2961
2962 for (i = 0; i < items; ++i)
2963 PUSHs (arg [i]);
2964
2965 /* now push the callback closure */
2966 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2967
2968 /* now call the AIO function - we assume our request is uncancelable */
2969 PUTBACK;
2970 call_sv ((SV *)req, G_VOID | G_DISCARD);
2971 }
2972
2973 /* now that the requets is going, we loop toll we have a result */
2974 frame->data = (void *)state;
2975 frame->prepare = prepare_schedule;
2976 frame->check = slf_check_aio_req;
2977}
2978
2979static void
2980coro_aio_req_xs (pTHX_ CV *cv)
2981{
2982 dXSARGS;
2983
2984 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2985
2986 XSRETURN_EMPTY;
2987}
2988
2989/*****************************************************************************/
2990
2991#if CORO_CLONE
2992# include "clone.c"
2993#endif
2994
1629MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2995MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1630 2996
1631PROTOTYPES: DISABLE 2997PROTOTYPES: DISABLE
1632 2998
1633BOOT: 2999BOOT:
1634{ 3000{
1635#ifdef USE_ITHREADS 3001#ifdef USE_ITHREADS
1636 MUTEX_INIT (&coro_mutex); 3002# if CORO_PTHREAD
3003 coro_thx = PERL_GET_CONTEXT;
3004# endif
1637#endif 3005#endif
1638 BOOT_PAGESIZE; 3006 BOOT_PAGESIZE;
3007
3008 cctx_current = cctx_new_empty ();
1639 3009
1640 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3010 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1641 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3011 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1642 3012
1643 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3013 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1659 main_top_env = PL_top_env; 3029 main_top_env = PL_top_env;
1660 3030
1661 while (main_top_env->je_prev) 3031 while (main_top_env->je_prev)
1662 main_top_env = main_top_env->je_prev; 3032 main_top_env = main_top_env->je_prev;
1663 3033
3034 {
3035 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3036
3037 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3038 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3039
3040 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3041 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3042 }
3043
1664 coroapi.ver = CORO_API_VERSION; 3044 coroapi.ver = CORO_API_VERSION;
1665 coroapi.rev = CORO_API_REVISION; 3045 coroapi.rev = CORO_API_REVISION;
3046
1666 coroapi.transfer = api_transfer; 3047 coroapi.transfer = api_transfer;
1667 3048
3049 coroapi.sv_state = SvSTATE_;
3050 coroapi.execute_slf = api_execute_slf;
3051 coroapi.prepare_nop = prepare_nop;
3052 coroapi.prepare_schedule = prepare_schedule;
3053 coroapi.prepare_cede = prepare_cede;
3054 coroapi.prepare_cede_notself = prepare_cede_notself;
3055
3056 {
3057 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3058
3059 if (!svp) croak ("Time::HiRes is required");
3060 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3061
3062 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3063
3064 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3065 u2time = INT2PTR (double (*)(), SvIV (*svp));
3066 }
3067
1668 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3068 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1669} 3069}
1670 3070
1671SV * 3071SV *
1672new (char *klass, ...) 3072new (char *klass, ...)
3073 ALIAS:
3074 Coro::new = 1
1673 CODE: 3075 CODE:
1674{ 3076{
1675 struct coro *coro; 3077 struct coro *coro;
1676 MAGIC *mg; 3078 MAGIC *mg;
1677 HV *hv; 3079 HV *hv;
3080 CV *cb;
1678 int i; 3081 int i;
3082
3083 if (items > 1)
3084 {
3085 cb = coro_sv_2cv (aTHX_ ST (1));
3086
3087 if (!ix)
3088 {
3089 if (CvISXSUB (cb))
3090 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3091
3092 if (!CvROOT (cb))
3093 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3094 }
3095 }
1679 3096
1680 Newz (0, coro, 1, struct coro); 3097 Newz (0, coro, 1, struct coro);
1681 coro->args = newAV (); 3098 coro->args = newAV ();
1682 coro->flags = CF_NEW; 3099 coro->flags = CF_NEW;
1683 3100
… …
1688 coro->hv = hv = newHV (); 3105 coro->hv = hv = newHV ();
1689 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3106 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1690 mg->mg_flags |= MGf_DUP; 3107 mg->mg_flags |= MGf_DUP;
1691 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3108 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1692 3109
3110 if (items > 1)
3111 {
1693 av_extend (coro->args, items - 1); 3112 av_extend (coro->args, items - 1 + ix - 1);
3113
3114 if (ix)
3115 {
3116 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3117 cb = cv_coro_run;
3118 }
3119
3120 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3121
1694 for (i = 1; i < items; i++) 3122 for (i = 2; i < items; i++)
1695 av_push (coro->args, newSVsv (ST (i))); 3123 av_push (coro->args, newSVsv (ST (i)));
3124 }
1696} 3125}
1697 OUTPUT: 3126 OUTPUT:
1698 RETVAL 3127 RETVAL
1699 3128
1700# these not obviously related functions are all rolled into the same xs
1701# function to increase chances that they all will call transfer with the same
1702# stack offset
1703void 3129void
1704_set_stacklevel (...) 3130transfer (...)
1705 ALIAS: 3131 PROTOTYPE: $$
1706 Coro::State::transfer = 1 3132 CODE:
1707 Coro::schedule = 2 3133 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1708 Coro::cede = 3
1709 Coro::cede_notself = 4
1710 CODE:
1711{
1712 struct transfer_args ta;
1713
1714 PUTBACK;
1715 switch (ix)
1716 {
1717 case 0:
1718 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1719 ta.next = 0;
1720 break;
1721
1722 case 1:
1723 if (items != 2)
1724 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1725
1726 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1727 break;
1728
1729 case 2:
1730 prepare_schedule (aTHX_ &ta);
1731 break;
1732
1733 case 3:
1734 prepare_cede (aTHX_ &ta);
1735 break;
1736
1737 case 4:
1738 if (!prepare_cede_notself (aTHX_ &ta))
1739 XSRETURN_EMPTY;
1740
1741 break;
1742 }
1743 SPAGAIN;
1744
1745 BARRIER;
1746 PUTBACK;
1747 TRANSFER (ta, 0);
1748 SPAGAIN; /* might be the sp of a different coroutine now */
1749 /* be extra careful not to ever do anything after TRANSFER */
1750}
1751 3134
1752bool 3135bool
1753_destroy (SV *coro_sv) 3136_destroy (SV *coro_sv)
1754 CODE: 3137 CODE:
1755 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3138 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1760_exit (int code) 3143_exit (int code)
1761 PROTOTYPE: $ 3144 PROTOTYPE: $
1762 CODE: 3145 CODE:
1763 _exit (code); 3146 _exit (code);
1764 3147
3148SV *
3149clone (Coro::State coro)
3150 CODE:
3151{
3152#if CORO_CLONE
3153 struct coro *ncoro = coro_clone (aTHX_ coro);
3154 MAGIC *mg;
3155 /* TODO: too much duplication */
3156 ncoro->hv = newHV ();
3157 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3158 mg->mg_flags |= MGf_DUP;
3159 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3160#else
3161 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3162#endif
3163}
3164 OUTPUT:
3165 RETVAL
3166
1765int 3167int
1766cctx_stacksize (int new_stacksize = 0) 3168cctx_stacksize (int new_stacksize = 0)
3169 PROTOTYPE: ;$
1767 CODE: 3170 CODE:
1768 RETVAL = coro_stacksize; 3171 RETVAL = cctx_stacksize;
1769 if (new_stacksize) 3172 if (new_stacksize)
3173 {
1770 coro_stacksize = new_stacksize; 3174 cctx_stacksize = new_stacksize;
3175 ++cctx_gen;
3176 }
1771 OUTPUT: 3177 OUTPUT:
1772 RETVAL 3178 RETVAL
1773 3179
1774int 3180int
3181cctx_max_idle (int max_idle = 0)
3182 PROTOTYPE: ;$
3183 CODE:
3184 RETVAL = cctx_max_idle;
3185 if (max_idle > 1)
3186 cctx_max_idle = max_idle;
3187 OUTPUT:
3188 RETVAL
3189
3190int
1775cctx_count () 3191cctx_count ()
3192 PROTOTYPE:
1776 CODE: 3193 CODE:
1777 RETVAL = cctx_count; 3194 RETVAL = cctx_count;
1778 OUTPUT: 3195 OUTPUT:
1779 RETVAL 3196 RETVAL
1780 3197
1781int 3198int
1782cctx_idle () 3199cctx_idle ()
3200 PROTOTYPE:
1783 CODE: 3201 CODE:
1784 RETVAL = cctx_idle; 3202 RETVAL = cctx_idle;
1785 OUTPUT: 3203 OUTPUT:
1786 RETVAL 3204 RETVAL
1787 3205
1788void 3206void
1789list () 3207list ()
3208 PROTOTYPE:
1790 PPCODE: 3209 PPCODE:
1791{ 3210{
1792 struct coro *coro; 3211 struct coro *coro;
1793 for (coro = coro_first; coro; coro = coro->next) 3212 for (coro = coro_first; coro; coro = coro->next)
1794 if (coro->hv) 3213 if (coro->hv)
… …
1799call (Coro::State coro, SV *coderef) 3218call (Coro::State coro, SV *coderef)
1800 ALIAS: 3219 ALIAS:
1801 eval = 1 3220 eval = 1
1802 CODE: 3221 CODE:
1803{ 3222{
1804 if (coro->mainstack) 3223 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1805 { 3224 {
1806 struct coro temp; 3225 struct coro *current = SvSTATE_current;
1807 3226
1808 if (!(coro->flags & CF_RUNNING)) 3227 if (current != coro)
1809 { 3228 {
1810 PUTBACK; 3229 PUTBACK;
1811 save_perl (aTHX_ &temp); 3230 save_perl (aTHX_ current);
1812 load_perl (aTHX_ coro); 3231 load_perl (aTHX_ coro);
3232 SPAGAIN;
1813 } 3233 }
1814 3234
1815 {
1816 dSP;
1817 ENTER;
1818 SAVETMPS;
1819 PUTBACK;
1820 PUSHSTACK; 3235 PUSHSTACK;
3236
1821 PUSHMARK (SP); 3237 PUSHMARK (SP);
3238 PUTBACK;
1822 3239
1823 if (ix) 3240 if (ix)
1824 eval_sv (coderef, 0); 3241 eval_sv (coderef, 0);
1825 else 3242 else
1826 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3243 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1827 3244
1828 POPSTACK; 3245 POPSTACK;
1829 SPAGAIN; 3246 SPAGAIN;
1830 FREETMPS;
1831 LEAVE;
1832 PUTBACK;
1833 }
1834 3247
1835 if (!(coro->flags & CF_RUNNING)) 3248 if (current != coro)
1836 { 3249 {
3250 PUTBACK;
1837 save_perl (aTHX_ coro); 3251 save_perl (aTHX_ coro);
1838 load_perl (aTHX_ &temp); 3252 load_perl (aTHX_ current);
1839 SPAGAIN; 3253 SPAGAIN;
1840 } 3254 }
1841 } 3255 }
1842} 3256}
1843 3257
… …
1847 ALIAS: 3261 ALIAS:
1848 is_ready = CF_READY 3262 is_ready = CF_READY
1849 is_running = CF_RUNNING 3263 is_running = CF_RUNNING
1850 is_new = CF_NEW 3264 is_new = CF_NEW
1851 is_destroyed = CF_DESTROYED 3265 is_destroyed = CF_DESTROYED
3266 is_suspended = CF_SUSPENDED
1852 CODE: 3267 CODE:
1853 RETVAL = boolSV (coro->flags & ix); 3268 RETVAL = boolSV (coro->flags & ix);
1854 OUTPUT: 3269 OUTPUT:
1855 RETVAL 3270 RETVAL
1856 3271
1857void 3272void
3273throw (Coro::State self, SV *throw = &PL_sv_undef)
3274 PROTOTYPE: $;$
3275 CODE:
3276{
3277 struct coro *current = SvSTATE_current;
3278 SV **throwp = self == current ? &CORO_THROW : &self->except;
3279 SvREFCNT_dec (*throwp);
3280 SvGETMAGIC (throw);
3281 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3282}
3283
3284void
1858api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3285api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3286 PROTOTYPE: $;$
3287 C_ARGS: aTHX_ coro, flags
1859 3288
1860SV * 3289SV *
1861has_cctx (Coro::State coro) 3290has_cctx (Coro::State coro)
1862 PROTOTYPE: $ 3291 PROTOTYPE: $
1863 CODE: 3292 CODE:
1864 RETVAL = boolSV (!!coro->cctx); 3293 /* maybe manage the running flag differently */
3294 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1865 OUTPUT: 3295 OUTPUT:
1866 RETVAL 3296 RETVAL
1867 3297
1868int 3298int
1869is_traced (Coro::State coro) 3299is_traced (Coro::State coro)
… …
1871 CODE: 3301 CODE:
1872 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3302 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1873 OUTPUT: 3303 OUTPUT:
1874 RETVAL 3304 RETVAL
1875 3305
1876IV 3306UV
1877rss (Coro::State coro) 3307rss (Coro::State coro)
1878 PROTOTYPE: $ 3308 PROTOTYPE: $
1879 ALIAS: 3309 ALIAS:
1880 usecount = 1 3310 usecount = 1
1881 CODE: 3311 CODE:
… …
1887 OUTPUT: 3317 OUTPUT:
1888 RETVAL 3318 RETVAL
1889 3319
1890void 3320void
1891force_cctx () 3321force_cctx ()
3322 PROTOTYPE:
1892 CODE: 3323 CODE:
3324 cctx_current->idle_sp = 0;
3325
3326void
3327swap_defsv (Coro::State self)
3328 PROTOTYPE: $
3329 ALIAS:
3330 swap_defav = 1
3331 CODE:
3332 if (!self->slot)
3333 croak ("cannot swap state with coroutine that has no saved state,");
3334 else
3335 {
3336 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3337 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3338
3339 SV *tmp = *src; *src = *dst; *dst = tmp;
3340 }
3341
3342void
3343cancel (Coro::State self)
3344 CODE:
3345 coro_state_destroy (aTHX_ self);
3346 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3347
3348
3349SV *
3350enable_times (int enabled = enable_times)
3351 CODE:
3352{
3353 RETVAL = boolSV (enable_times);
3354
3355 if (enabled != enable_times)
3356 {
3357 enable_times = enabled;
3358
3359 coro_times_update ();
3360 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3361 }
3362}
3363 OUTPUT:
3364 RETVAL
3365
3366void
3367times (Coro::State self)
3368 PPCODE:
3369{
1893 struct coro *coro = SvSTATE (coro_current); 3370 struct coro *current = SvSTATE (coro_current);
1894 coro->cctx->idle_sp = 0; 3371
3372 if (expect_false (current == self))
3373 {
3374 coro_times_update ();
3375 coro_times_add (SvSTATE (coro_current));
3376 }
3377
3378 EXTEND (SP, 2);
3379 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3380 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3381
3382 if (expect_false (current == self))
3383 coro_times_sub (SvSTATE (coro_current));
3384}
1895 3385
1896MODULE = Coro::State PACKAGE = Coro 3386MODULE = Coro::State PACKAGE = Coro
1897 3387
1898BOOT: 3388BOOT:
1899{ 3389{
1900 int i;
1901
1902 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1903 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3390 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1904 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3391 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1905 3392 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3393 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1906 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3394 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1907 SvREADONLY_on (coro_current); 3395 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3396 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3397 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3398 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3399
3400 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3401 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3402 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3403 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1908 3404
1909 coro_stash = gv_stashpv ("Coro", TRUE); 3405 coro_stash = gv_stashpv ("Coro", TRUE);
1910 3406
1911 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3407 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1912 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3408 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1913 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3409 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1914 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3410 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1915 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3411 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1916 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3412 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1917
1918 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1919 coro_ready[i] = newAV ();
1920 3413
1921 { 3414 {
1922 SV *sv = perl_get_sv ("Coro::API", TRUE); 3415 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1923 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1924 3416
1925 coroapi.schedule = api_schedule; 3417 coroapi.schedule = api_schedule;
3418 coroapi.schedule_to = api_schedule_to;
1926 coroapi.cede = api_cede; 3419 coroapi.cede = api_cede;
1927 coroapi.cede_notself = api_cede_notself; 3420 coroapi.cede_notself = api_cede_notself;
1928 coroapi.ready = api_ready; 3421 coroapi.ready = api_ready;
1929 coroapi.is_ready = api_is_ready; 3422 coroapi.is_ready = api_is_ready;
1930 coroapi.nready = &coro_nready; 3423 coroapi.nready = coro_nready;
1931 coroapi.current = coro_current; 3424 coroapi.current = coro_current;
1932 3425
1933 GCoroAPI = &coroapi; 3426 /*GCoroAPI = &coroapi;*/
1934 sv_setiv (sv, (IV)&coroapi); 3427 sv_setiv (sv, (IV)&coroapi);
1935 SvREADONLY_on (sv); 3428 SvREADONLY_on (sv);
1936 } 3429 }
1937} 3430}
3431
3432void
3433terminate (...)
3434 CODE:
3435 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3436
3437void
3438schedule (...)
3439 CODE:
3440 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3441
3442void
3443schedule_to (...)
3444 CODE:
3445 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3446
3447void
3448cede_to (...)
3449 CODE:
3450 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3451
3452void
3453cede (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_cede);
3456
3457void
3458cede_notself (...)
3459 CODE:
3460 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1938 3461
1939void 3462void
1940_set_current (SV *current) 3463_set_current (SV *current)
1941 PROTOTYPE: $ 3464 PROTOTYPE: $
1942 CODE: 3465 CODE:
1943 SvREFCNT_dec (SvRV (coro_current)); 3466 SvREFCNT_dec (SvRV (coro_current));
1944 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3467 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1945 3468
1946void 3469void
1947_set_readyhook (SV *hook) 3470_set_readyhook (SV *hook)
1948 PROTOTYPE: $ 3471 PROTOTYPE: $
1949 CODE: 3472 CODE:
1950 LOCK;
1951 SvREFCNT_dec (coro_readyhook); 3473 SvREFCNT_dec (coro_readyhook);
3474 SvGETMAGIC (hook);
1952 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3475 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1953 UNLOCK;
1954 3476
1955int 3477int
1956prio (Coro::State coro, int newprio = 0) 3478prio (Coro::State coro, int newprio = 0)
3479 PROTOTYPE: $;$
1957 ALIAS: 3480 ALIAS:
1958 nice = 1 3481 nice = 1
1959 CODE: 3482 CODE:
1960{ 3483{
1961 RETVAL = coro->prio; 3484 RETVAL = coro->prio;
… …
1963 if (items > 1) 3486 if (items > 1)
1964 { 3487 {
1965 if (ix) 3488 if (ix)
1966 newprio = coro->prio - newprio; 3489 newprio = coro->prio - newprio;
1967 3490
1968 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3491 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1969 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3492 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1970 3493
1971 coro->prio = newprio; 3494 coro->prio = newprio;
1972 } 3495 }
1973} 3496}
1974 OUTPUT: 3497 OUTPUT:
… …
1976 3499
1977SV * 3500SV *
1978ready (SV *self) 3501ready (SV *self)
1979 PROTOTYPE: $ 3502 PROTOTYPE: $
1980 CODE: 3503 CODE:
1981 RETVAL = boolSV (api_ready (self)); 3504 RETVAL = boolSV (api_ready (aTHX_ self));
1982 OUTPUT: 3505 OUTPUT:
1983 RETVAL 3506 RETVAL
1984 3507
1985int 3508int
1986nready (...) 3509nready (...)
… …
1989 RETVAL = coro_nready; 3512 RETVAL = coro_nready;
1990 OUTPUT: 3513 OUTPUT:
1991 RETVAL 3514 RETVAL
1992 3515
1993void 3516void
1994throw (Coro::State self, SV *throw = &PL_sv_undef) 3517suspend (Coro::State self)
1995 PROTOTYPE: $;$ 3518 PROTOTYPE: $
3519 CODE:
3520 self->flags |= CF_SUSPENDED;
3521
3522void
3523resume (Coro::State self)
3524 PROTOTYPE: $
3525 CODE:
3526 self->flags &= ~CF_SUSPENDED;
3527
3528void
3529_pool_handler (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3532
3533void
3534async_pool (SV *cv, ...)
3535 PROTOTYPE: &@
3536 PPCODE:
3537{
3538 HV *hv = (HV *)av_pop (av_async_pool);
3539 AV *av = newAV ();
3540 SV *cb = ST (0);
3541 int i;
3542
3543 av_extend (av, items - 2);
3544 for (i = 1; i < items; ++i)
3545 av_push (av, SvREFCNT_inc_NN (ST (i)));
3546
3547 if ((SV *)hv == &PL_sv_undef)
3548 {
3549 PUSHMARK (SP);
3550 EXTEND (SP, 2);
3551 PUSHs (sv_Coro);
3552 PUSHs ((SV *)cv_pool_handler);
3553 PUTBACK;
3554 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3555 SPAGAIN;
3556
3557 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3558 }
3559
3560 {
3561 struct coro *coro = SvSTATE_hv (hv);
3562
3563 assert (!coro->invoke_cb);
3564 assert (!coro->invoke_av);
3565 coro->invoke_cb = SvREFCNT_inc (cb);
3566 coro->invoke_av = av;
3567 }
3568
3569 api_ready (aTHX_ (SV *)hv);
3570
3571 if (GIMME_V != G_VOID)
3572 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3573 else
3574 SvREFCNT_dec (hv);
3575}
3576
3577SV *
3578rouse_cb ()
3579 PROTOTYPE:
3580 CODE:
3581 RETVAL = coro_new_rouse_cb (aTHX);
3582 OUTPUT:
3583 RETVAL
3584
3585void
3586rouse_wait (...)
3587 PROTOTYPE: ;$
3588 PPCODE:
3589 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3590
3591void
3592on_enter (SV *block)
3593 ALIAS:
3594 on_leave = 1
3595 PROTOTYPE: &
3596 CODE:
3597{
3598 struct coro *coro = SvSTATE_current;
3599 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3600
3601 block = (SV *)coro_sv_2cv (aTHX_ block);
3602
3603 if (!*avp)
3604 *avp = newAV ();
3605
3606 av_push (*avp, SvREFCNT_inc (block));
3607
3608 if (!ix)
3609 on_enterleave_call (aTHX_ block);
3610
3611 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3612 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3613 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3614}
3615
3616
3617MODULE = Coro::State PACKAGE = PerlIO::cede
3618
3619BOOT:
3620 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3621
3622
3623MODULE = Coro::State PACKAGE = Coro::Semaphore
3624
3625SV *
3626new (SV *klass, SV *count = 0)
3627 CODE:
3628{
3629 int semcnt = 1;
3630
3631 if (count)
3632 {
3633 SvGETMAGIC (count);
3634
3635 if (SvOK (count))
3636 semcnt = SvIV (count);
3637 }
3638
3639 RETVAL = sv_bless (
3640 coro_waitarray_new (aTHX_ semcnt),
3641 GvSTASH (CvGV (cv))
3642 );
3643}
3644 OUTPUT:
3645 RETVAL
3646
3647# helper for Coro::Channel and others
3648SV *
3649_alloc (int count)
3650 CODE:
3651 RETVAL = coro_waitarray_new (aTHX_ count);
3652 OUTPUT:
3653 RETVAL
3654
3655SV *
3656count (SV *self)
3657 CODE:
3658 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3659 OUTPUT:
3660 RETVAL
3661
3662void
3663up (SV *self, int adjust = 1)
3664 ALIAS:
3665 adjust = 1
1996 CODE: 3666 CODE:
1997 SvREFCNT_dec (self->throw); 3667 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1998 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1999 3668
2000void 3669void
2001swap_defsv (Coro::State self) 3670down (...)
2002 PROTOTYPE: $
2003 ALIAS:
2004 swap_defav = 1
2005 CODE: 3671 CODE:
2006 if (!self->slot) 3672 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2007 croak ("cannot swap state with coroutine that has no saved state"); 3673
3674void
3675wait (...)
3676 CODE:
3677 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3678
3679void
3680try (SV *self)
3681 PPCODE:
3682{
3683 AV *av = (AV *)SvRV (self);
3684 SV *count_sv = AvARRAY (av)[0];
3685 IV count = SvIVX (count_sv);
3686
3687 if (count > 0)
3688 {
3689 --count;
3690 SvIVX (count_sv) = count;
3691 XSRETURN_YES;
3692 }
3693 else
3694 XSRETURN_NO;
3695}
3696
3697void
3698waiters (SV *self)
3699 PPCODE:
3700{
3701 AV *av = (AV *)SvRV (self);
3702 int wcount = AvFILLp (av) + 1 - 1;
3703
3704 if (GIMME_V == G_SCALAR)
3705 XPUSHs (sv_2mortal (newSViv (wcount)));
2008 else 3706 else
2009 { 3707 {
2010 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3708 int i;
2011 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3709 EXTEND (SP, wcount);
2012 3710 for (i = 1; i <= wcount; ++i)
2013 SV *tmp = *src; *src = *dst; *dst = tmp; 3711 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2014 } 3712 }
3713}
2015 3714
2016# for async_pool speedup 3715MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3716
2017void 3717void
2018_pool_1 (SV *cb) 3718_may_delete (SV *sem, int count, int extra_refs)
3719 PPCODE:
3720{
3721 AV *av = (AV *)SvRV (sem);
3722
3723 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3724 && AvFILLp (av) == 0 /* no waiters, just count */
3725 && SvIV (AvARRAY (av)[0]) == count)
3726 XSRETURN_YES;
3727
3728 XSRETURN_NO;
3729}
3730
3731MODULE = Coro::State PACKAGE = Coro::Signal
3732
3733SV *
3734new (SV *klass)
2019 CODE: 3735 CODE:
2020{ 3736 RETVAL = sv_bless (
2021 struct coro *coro = SvSTATE (coro_current); 3737 coro_waitarray_new (aTHX_ 0),
2022 HV *hv = (HV *)SvRV (coro_current); 3738 GvSTASH (CvGV (cv))
2023 AV *defav = GvAV (PL_defgv); 3739 );
2024 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 3740 OUTPUT:
2025 AV *invoke_av; 3741 RETVAL
2026 int i, len;
2027
2028 if (!invoke)
2029 {
2030 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
2031 croak ("\3async_pool terminate\2\n");
2032 }
2033
2034 SvREFCNT_dec (coro->saved_deffh);
2035 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2036
2037 hv_store (hv, "desc", sizeof ("desc") - 1,
2038 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2039
2040 invoke_av = (AV *)SvRV (invoke);
2041 len = av_len (invoke_av);
2042
2043 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2044
2045 if (len > 0)
2046 {
2047 av_fill (defav, len - 1);
2048 for (i = 0; i < len; ++i)
2049 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2050 }
2051
2052 SvREFCNT_dec (invoke);
2053}
2054 3742
2055void 3743void
2056_pool_2 (SV *cb) 3744wait (...)
3745 CODE:
3746 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3747
3748void
3749broadcast (SV *self)
3750 CODE:
3751{
3752 AV *av = (AV *)SvRV (self);
3753 coro_signal_wake (aTHX_ av, AvFILLp (av));
3754}
3755
3756void
3757send (SV *self)
3758 CODE:
3759{
3760 AV *av = (AV *)SvRV (self);
3761
3762 if (AvFILLp (av))
3763 coro_signal_wake (aTHX_ av, 1);
3764 else
3765 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3766}
3767
3768IV
3769awaited (SV *self)
2057 CODE: 3770 CODE:
2058{ 3771 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
2059 struct coro *coro = SvSTATE (coro_current);
2060
2061 sv_setsv (cb, &PL_sv_undef);
2062
2063 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2064 coro->saved_deffh = 0;
2065
2066 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2067 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2068 {
2069 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
2070 croak ("\3async_pool terminate\2\n");
2071 }
2072
2073 av_clear (GvAV (PL_defgv));
2074 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2075 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2076
2077 coro->prio = 0;
2078
2079 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2080 api_trace (coro_current, 0);
2081
2082 av_push (av_async_pool, newSVsv (coro_current));
2083}
2084
2085
2086MODULE = Coro::State PACKAGE = Coro::AIO
2087
2088SV *
2089_get_state ()
2090 CODE:
2091{
2092 struct io_state *data;
2093
2094 RETVAL = newSV (sizeof (struct io_state));
2095 data = (struct io_state *)SvPVX (RETVAL);
2096 SvCUR_set (RETVAL, sizeof (struct io_state));
2097 SvPOK_only (RETVAL);
2098
2099 data->errorno = errno;
2100 data->laststype = PL_laststype;
2101 data->laststatval = PL_laststatval;
2102 data->statcache = PL_statcache;
2103}
2104 OUTPUT: 3772 OUTPUT:
2105 RETVAL 3773 RETVAL
2106 3774
2107void
2108_set_state (char *data_)
2109 PROTOTYPE: $
2110 CODE:
2111{
2112 struct io_state *data = (void *)data_;
2113
2114 errno = data->errorno;
2115 PL_laststype = data->laststype;
2116 PL_laststatval = data->laststatval;
2117 PL_statcache = data->statcache;
2118}
2119
2120 3775
2121MODULE = Coro::State PACKAGE = Coro::AnyEvent 3776MODULE = Coro::State PACKAGE = Coro::AnyEvent
2122 3777
2123BOOT: 3778BOOT:
2124 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3779 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2125 3780
2126SV * 3781void
2127_schedule (...) 3782_schedule (...)
2128 PROTOTYPE: @
2129 CODE: 3783 CODE:
2130{ 3784{
2131 static int incede; 3785 static int incede;
2132 3786
2133 api_cede_notself (); 3787 api_cede_notself (aTHX);
2134 3788
2135 ++incede; 3789 ++incede;
2136 while (coro_nready >= incede && api_cede ()) 3790 while (coro_nready >= incede && api_cede (aTHX))
2137 ; 3791 ;
2138 3792
2139 sv_setsv (sv_activity, &PL_sv_undef); 3793 sv_setsv (sv_activity, &PL_sv_undef);
2140 if (coro_nready >= incede) 3794 if (coro_nready >= incede)
2141 { 3795 {
2142 PUSHMARK (SP); 3796 PUSHMARK (SP);
2143 PUTBACK; 3797 PUTBACK;
2144 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3798 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2145 SPAGAIN;
2146 } 3799 }
2147 3800
2148 --incede; 3801 --incede;
2149} 3802}
2150 3803
3804
3805MODULE = Coro::State PACKAGE = Coro::AIO
3806
3807void
3808_register (char *target, char *proto, SV *req)
3809 CODE:
3810{
3811 CV *req_cv = coro_sv_2cv (aTHX_ req);
3812 /* newXSproto doesn't return the CV on 5.8 */
3813 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3814 sv_setpv ((SV *)slf_cv, proto);
3815 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3816}
3817

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