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Comparing Coro/Coro/State.xs (file contents):
Revision 1.232 by root, Thu Apr 24 12:40:38 2008 UTC vs.
Revision 1.325 by root, Sun Nov 23 06:48:45 2008 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_main_cv == Nullcv)
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 */ 164static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 174static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
164 180
165static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 183static SV *rv_diehook;
168static SV *rv_warnhook; 184static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
170 186
171/* async_pool helper stuff */ 187/* async_pool helper stuff */
172static SV *sv_pool_rss; 188static SV *sv_pool_rss;
173static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
195
196/* Coro::AnyEvent */
197static SV *sv_activity;
175 198
176static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 200static int cctx_count, cctx_idle;
178 201
179enum { 202enum {
… …
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
186}; 209};
187 210
188/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
189typedef struct coro_cctx { 212typedef struct coro_cctx
213{
190 struct coro_cctx *next; 214 struct coro_cctx *next;
191 215
192 /* the stack */ 216 /* the stack */
193 void *sptr; 217 void *sptr;
194 size_t ssize; 218 size_t ssize;
… …
197 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 221 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
198 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 222 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
199 JMPENV *top_env; 223 JMPENV *top_env;
200 coro_context cctx; 224 coro_context cctx;
201 225
226 U32 gen;
202#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
203 int valgrind_id; 228 int valgrind_id;
204#endif 229#endif
205 unsigned char flags; 230 unsigned char flags;
206} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
207 236
208enum { 237enum {
209 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
210 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
211 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
212 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
213}; 242};
214 243
215/* the structure where most of the perl state is stored, overlaid on the cxstack */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
216typedef struct { 245typedef struct
246{
217 SV *defsv; 247 SV *defsv;
218 AV *defav; 248 AV *defav;
219 SV *errsv; 249 SV *errsv;
220 SV *irsgv; 250 SV *irsgv;
221#define VAR(name,type) type name; 251#define VAR(name,type) type name;
… …
225 255
226#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
227 257
228/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
229struct coro { 259struct coro {
230 /* the c coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
231 coro_cctx *cctx; 261 coro_cctx *cctx;
232 262
233 /* process data */ 263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
234 AV *mainstack; 265 AV *mainstack;
235 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
236 267
268 CV *startcv; /* the CV to execute */
237 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
238 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
239 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
240 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
241 274
242 /* statistics */ 275 /* statistics */
243 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
244 277
245 /* coro process data */ 278 /* coro process data */
246 int prio; 279 int prio;
247 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
248 282
249 /* async_pool */ 283 /* async_pool */
250 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
251 287
252 /* linked list */ 288 /* linked list */
253 struct coro *next, *prev; 289 struct coro *next, *prev;
254}; 290};
255 291
256typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
257typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
258 299
259/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
260 301
261#define PRIO_MAX 3 302#define PRIO_MAX 3
262#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
265#define PRIO_IDLE -3 306#define PRIO_IDLE -3
266#define PRIO_MIN -4 307#define PRIO_MIN -4
267 308
268/* for Coro.pm */ 309/* for Coro.pm */
269static SV *coro_current; 310static SV *coro_current;
311static SV *coro_readyhook;
270static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
271static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
272static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
273 316
274/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
275 318
276static SV * 319static SV *
277coro_get_sv (pTHX_ const char *name, int create) 320coro_get_sv (pTHX_ const char *name, int create)
… …
301 get_hv (name, create); 344 get_hv (name, create);
302#endif 345#endif
303 return get_hv (name, create); 346 return get_hv (name, create);
304} 347}
305 348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
306static AV * 358static AV *
307coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
308{ 360{
309 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
310 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
311 363
312 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
317 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
318#endif 370#endif
319 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 371 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
320 --AvFILLp (padlist); 372 --AvFILLp (padlist);
321 373
322 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 374 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
323 av_store (newpadlist, 1, (SV *)newpad); 375 av_store (newpadlist, 1, (SV *)newpad);
324 376
325 return newpadlist; 377 return newpadlist;
326} 378}
327 379
… …
357 409
358 /* casting is fun. */ 410 /* casting is fun. */
359 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 411 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
360 free_padlist (aTHX_ padlist); 412 free_padlist (aTHX_ padlist);
361 413
414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
415
362 return 0; 416 return 0;
363} 417}
364 418
365#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
366#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
367 421
368static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
369 0, 0, 0, 0, 423 0, 0, 0, 0,
370 coro_cv_free 424 coro_cv_free
371}; 425};
372 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
373#define CORO_MAGIC(sv,type) \ 432#define CORO_MAGIC(sv, type) \
374 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
375 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
376 ? SvMAGIC (sv) \
377 : mg_find (sv, type) \
378 : 0 435 : 0)
379 436
380#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
381#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
382 439
383static struct coro * 440INLINE struct coro *
384SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
385{ 442{
386 HV *stash; 443 HV *stash;
387 MAGIC *mg; 444 MAGIC *mg;
388 445
… …
403 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
404 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
405} 462}
406 463
407#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408 469
409/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
410static void 471static void
411get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
412{ 473{
… …
416 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 477 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
417 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 478 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
418 else 479 else
419 { 480 {
420#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
421 /* this is probably cleaner, but also slower? */ 482 /* this is probably cleaner? but also slower! */
483 /* in practise, it seems to be less stable */
422 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
423 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
424 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
425 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
426#else 488#else
427 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
428#endif 490#endif
429 } 491 }
430} 492}
431 493
432static void 494static void
… …
478 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
479 } 541 }
480 542
481 PUTBACK; 543 PUTBACK;
482 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
483} 548}
484 549
485static void 550static void
486save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
487{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
488 { 556 {
489 dSP; 557 dSP;
490 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
491 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
492 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
510 578
511 if (expect_true (CvDEPTH (cv))) 579 if (expect_true (CvDEPTH (cv)))
512 { 580 {
513 EXTEND (SP, 3); 581 EXTEND (SP, 3);
514 PUSHs ((SV *)CvPADLIST (cv)); 582 PUSHs ((SV *)CvPADLIST (cv));
515 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 583 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
516 PUSHs ((SV *)cv); 584 PUSHs ((SV *)cv);
517 585
518 CvDEPTH (cv) = 0; 586 CvDEPTH (cv) = 0;
519 get_padlist (aTHX_ cv); 587 get_padlist (aTHX_ cv);
520 } 588 }
… …
559 #undef VAR 627 #undef VAR
560 } 628 }
561} 629}
562 630
563/* 631/*
564 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
565 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
566 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
567 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
568 */ 636 */
569#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
570# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
571#else 639#else
572static void 640static void
573coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
574{ 642{
575 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
612 680
613/* 681/*
614 * destroy the stacks, the callchain etc... 682 * destroy the stacks, the callchain etc...
615 */ 683 */
616static void 684static void
617coro_destroy_stacks (pTHX) 685coro_destruct_stacks (pTHX)
618{ 686{
619 while (PL_curstackinfo->si_next) 687 while (PL_curstackinfo->si_next)
620 PL_curstackinfo = PL_curstackinfo->si_next; 688 PL_curstackinfo = PL_curstackinfo->si_next;
621 689
622 while (PL_curstackinfo) 690 while (PL_curstackinfo)
… …
638#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
639 Safefree (PL_retstack); 707 Safefree (PL_retstack);
640#endif 708#endif
641} 709}
642 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
643static size_t 720static size_t
644coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
645{ 722{
646 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
647 724
648 if (coro->mainstack) 725 if (coro->mainstack)
649 { 726 {
650 perl_slots tmp_slot;
651 perl_slots *slot;
652
653 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
654 { 728 {
655 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
656 730 CORO_RSS;
657 #define VAR(name,type) slot->name = PL_ ## name;
658 # include "state.h"
659 #undef VAR 731 #undef SYM
660 } 732 }
661 else 733 else
662 slot = coro->slot; 734 {
663 735 #define SYM(sym) coro->slot->sym
664 rss += sizeof (slot->curstackinfo); 736 CORO_RSS;
665 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 737 #undef SYM
666 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 738 }
667 rss += slot->tmps_max * sizeof (SV *);
668 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
669 rss += slot->scopestack_max * sizeof (I32);
670 rss += slot->savestack_max * sizeof (ANY);
671
672#if !PERL_VERSION_ATLEAST (5,10,0)
673 rss += slot->retstack_max * sizeof (OP *);
674#endif
675 } 739 }
676 740
677 return rss; 741 return rss;
678} 742}
679 743
680/** coroutine stack handling ************************************************/ 744/** coroutine stack handling ************************************************/
681 745
682static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 746static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
683static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 747static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
748static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
749
750/* apparently < 5.8.8 */
751#ifndef MgPV_nolen_const
752#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
753 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
754 (const char*)(mg)->mg_ptr)
755#endif
684 756
685/* 757/*
686 * This overrides the default magic get method of %SIG elements. 758 * This overrides the default magic get method of %SIG elements.
687 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 759 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
688 * and instead of tryign to save and restore the hash elements, we just provide 760 * and instead of tryign to save and restore the hash elements, we just provide
… …
696{ 768{
697 const char *s = MgPV_nolen_const (mg); 769 const char *s = MgPV_nolen_const (mg);
698 770
699 if (*s == '_') 771 if (*s == '_')
700 { 772 {
701 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 773 SV **svp = 0;
702 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
781 return 0;
782 }
703 } 783 }
704 784
705 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 785 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = 0;
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
706} 810}
707 811
708static int 812static int
709coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 813coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
710{ 814{
… …
728 832
729 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
730} 834}
731 835
732static void 836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
733coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
734{ 859{
735 /* 860 /*
736 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
737 */ 862 */
… …
757 GvSV (PL_defgv) = newSV (0); 882 GvSV (PL_defgv) = newSV (0);
758 GvAV (PL_defgv) = coro->args; coro->args = 0; 883 GvAV (PL_defgv) = coro->args; coro->args = 0;
759 GvSV (PL_errgv) = newSV (0); 884 GvSV (PL_errgv) = newSV (0);
760 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 885 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
761 PL_rs = newSVsv (GvSV (irsgv)); 886 PL_rs = newSVsv (GvSV (irsgv));
762 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
763 888
764 { 889 {
765 dSP; 890 dSP;
766 LOGOP myop; 891 UNOP myop;
767 892
768 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
769 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
770 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
771 897
772 PUSHMARK (SP); 898 PUSHMARK (SP);
773 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
774 PUTBACK; 900 PUTBACK;
775 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
776 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
777 SPAGAIN;
778 } 903 }
779 904
780 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
781 * likely was suspended in set_stacklevel, called from entersub. 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
782 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
783 * so we ENTER here for symmetry
784 */ 907 */
785 ENTER; 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
786} 909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
787 910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
921}
922
788static void 923static void
789coro_destroy (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
790{ 925{
791 if (!IN_DESTRUCT) 926 if (!IN_DESTRUCT)
792 { 927 {
793 /* restore all saved variables and stuff */ 928 /* restore all saved variables and stuff */
794 LEAVE_SCOPE (0); 929 LEAVE_SCOPE (0);
… …
814 949
815 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
816 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
817 952
818 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
819 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
820 957
821 coro_destroy_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
822} 959}
823 960
824static void 961INLINE void
825free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
826{ 963{
827 if (expect_true (coro_mortal)) 964 if (expect_true (coro_mortal))
828 { 965 {
829 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
… …
834static int 971static int
835runops_trace (pTHX) 972runops_trace (pTHX)
836{ 973{
837 COP *oldcop = 0; 974 COP *oldcop = 0;
838 int oldcxix = -2; 975 int oldcxix = -2;
839 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
840 coro_cctx *cctx = coro->cctx;
841 976
842 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
843 { 978 {
844 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
845 980
846 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
847 { 982 {
848 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
849 { 984 {
850 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
851 SV **bot, **top; 986 SV **bot, **top;
852 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
853 SV **cb; 988 SV **cb;
… …
863 : cx->blk_gimme == G_SCALAR ? bot + 1 998 : cx->blk_gimme == G_SCALAR ? bot + 1
864 : bot; 999 : bot;
865 1000
866 av_extend (av, top - bot); 1001 av_extend (av, top - bot);
867 while (bot < top) 1002 while (bot < top)
868 av_push (av, SvREFCNT_inc (*bot++)); 1003 av_push (av, SvREFCNT_inc_NN (*bot++));
869 1004
870 PL_runops = RUNOPS_DEFAULT; 1005 PL_runops = RUNOPS_DEFAULT;
871 ENTER; 1006 ENTER;
872 SAVETMPS; 1007 SAVETMPS;
873 EXTEND (SP, 3); 1008 EXTEND (SP, 3);
… …
890 1025
891 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
892 { 1027 {
893 SV **cb; 1028 SV **cb;
894 1029
895 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
896 { 1031 {
897 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
898 1033
899 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
900 { 1035 {
901 runops_proc_t old_runops = PL_runops;
902 dSP; 1036 dSP;
903 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
904 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
905 1039
906 if (isGV (gv)) 1040 if (isGV (gv))
… …
911 SAVETMPS; 1045 SAVETMPS;
912 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
913 PUSHMARK (SP); 1047 PUSHMARK (SP);
914 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
915 PUSHs (fullname); 1049 PUSHs (fullname);
916 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
917 PUTBACK; 1051 PUTBACK;
918 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
919 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
920 SPAGAIN; 1054 SPAGAIN;
921 FREETMPS; 1055 FREETMPS;
… …
924 } 1058 }
925 1059
926 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
927 } 1061 }
928 1062
929 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
930 { 1064 {
931 dSP; 1065 dSP;
932 1066
933 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
934 ENTER; 1068 ENTER;
… …
953 1087
954 TAINT_NOT; 1088 TAINT_NOT;
955 return 0; 1089 return 0;
956} 1090}
957 1091
958/* inject a fake call to Coro::State::_cctx_init into the execution */ 1092static struct CoroSLF cctx_ssl_frame;
959/* _cctx_init should be careful, as it could be called at almost any time */ 1093
960/* during execution of a perl program */ 1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
961static void NOINLINE 1109static void NOINLINE
962cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
963{ 1111{
964 dSP;
965 LOGOP myop;
966
967 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
968 1113
969 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
970 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
971 1116
972 Zero (&myop, 1, LOGOP); 1117 /* we already must be executing an SLF op, there is no other valid way
973 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
974 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
975 1121
976 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
977 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
978 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1124
979 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
980 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
981 PL_op = (OP *)&myop; 1127}
982 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1128
983 SPAGAIN; 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
984} 1134}
985 1135
986/* 1136/*
987 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
988 */ 1138 */
989static void 1139static void
990cctx_run (void *arg) 1140cctx_run (void *arg)
991{ 1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
992 dTHX; 1148 dTHX;
993 1149
994 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
995 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
996
997 /* we now skip the entersub that lead to transfer() */
998 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
999 1153
1000 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1001 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1002 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
1003 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
1004 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1005 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1006
1007 /* 1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1167
1168 /*
1008 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
1009 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
1010 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
1011 * bootstrap-time "top" top_env, as we cannot restore the "main" 1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
1012 * coroutine as Coro has no such concept 1173 * coroutine as Coro has no such concept
1013 */ 1174 */
1014 PL_top_env = main_top_env; 1175 PL_top_env = main_top_env;
1015 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1176 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177 }
1016} 1178}
1017 1179
1018static coro_cctx * 1180static coro_cctx *
1019cctx_new () 1181cctx_new ()
1020{ 1182{
1021 coro_cctx *cctx; 1183 coro_cctx *cctx;
1184
1185 ++cctx_count;
1186 New (0, cctx, 1, coro_cctx);
1187
1188 cctx->gen = cctx_gen;
1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1191
1192 return cctx;
1193}
1194
1195/* create a new cctx only suitable as source */
1196static coro_cctx *
1197cctx_new_empty ()
1198{
1199 coro_cctx *cctx = cctx_new ();
1200
1201 cctx->sptr = 0;
1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx suitable as destination/running a perl interpreter */
1208static coro_cctx *
1209cctx_new_run ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1022 void *stack_start; 1212 void *stack_start;
1023 size_t stack_size; 1213 size_t stack_size;
1024 1214
1025 ++cctx_count;
1026
1027 Newz (0, cctx, 1, coro_cctx);
1028
1029#if HAVE_MMAP 1215#if HAVE_MMAP
1030 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1216 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1031 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
1032 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1033 1219
1034 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
1035 { 1221 {
1036# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
1037 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1038# endif 1224 #endif
1039 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1040 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1041 cctx->flags |= CC_MAPPED; 1227 cctx->flags |= CC_MAPPED;
1042 } 1228 }
1043 else 1229 else
1044#endif 1230#endif
1045 { 1231 {
1046 cctx->ssize = coro_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1047 New (0, cctx->sptr, coro_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
1048 1234
1049 if (!cctx->sptr) 1235 if (!cctx->sptr)
1050 { 1236 {
1051 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1052 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
1053 } 1239 }
1054 1240
1055 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
1056 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
1057 } 1243 }
1058 1244
1059 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1247 #endif
1248
1060 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1061 1250
1062 return cctx; 1251 return cctx;
1063} 1252}
1064 1253
… …
1066cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1067{ 1256{
1068 if (!cctx) 1257 if (!cctx)
1069 return; 1258 return;
1070 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1071 --cctx_count; 1262 --cctx_count;
1263 coro_destroy (&cctx->cctx);
1072 1264
1265 /* coro_transfer creates new, empty cctx's */
1266 if (cctx->sptr)
1267 {
1073#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
1074 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1075#endif 1270 #endif
1076 1271
1077#if HAVE_MMAP 1272#if HAVE_MMAP
1078 if (cctx->flags & CC_MAPPED) 1273 if (cctx->flags & CC_MAPPED)
1079 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
1080 else 1275 else
1081#endif 1276#endif
1082 Safefree (cctx->sptr); 1277 Safefree (cctx->sptr);
1278 }
1083 1279
1084 Safefree (cctx); 1280 Safefree (cctx);
1085} 1281}
1086 1282
1087/* wether this cctx should be destructed */ 1283/* wether this cctx should be destructed */
1088#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1284#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1089 1285
1090static coro_cctx * 1286static coro_cctx *
1091cctx_get (pTHX) 1287cctx_get (pTHX)
1092{ 1288{
1093 while (expect_true (cctx_first)) 1289 while (expect_true (cctx_first))
… …
1100 return cctx; 1296 return cctx;
1101 1297
1102 cctx_destroy (cctx); 1298 cctx_destroy (cctx);
1103 } 1299 }
1104 1300
1105 return cctx_new (); 1301 return cctx_new_run ();
1106} 1302}
1107 1303
1108static void 1304static void
1109cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
1110{ 1306{
1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1308
1111 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
1112 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
1113 { 1311 {
1114 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
1115 cctx_first = first->next; 1313 cctx_first = first->next;
1116 --cctx_idle; 1314 --cctx_idle;
1117 1315
… …
1126/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1127 1325
1128static void 1326static void
1129transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1130{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1131 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1132 { 1332 {
1133 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1134 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1135 1335
1136 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1137 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1138 1338
1139 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
1140 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1141 1341
1142#if !PERL_VERSION_ATLEAST (5,10,0) 1342#if !PERL_VERSION_ATLEAST (5,10,0)
1143 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1144 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1145#endif 1345#endif
1146 } 1346 }
1147} 1347}
1148 1348
1149/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1150static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1151transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1152{ 1352{
1153 dSTACKLEVEL; 1353 dSTACKLEVEL;
1154 static volatile int has_throw;
1155 1354
1156 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1157 if (expect_false (!next)) 1356 if (expect_false (!prev))
1158 { 1357 {
1159 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
1160 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1161 } 1360 }
1162 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1163 { 1362 {
1164 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1165 1364
1166 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1167 { 1366 {
1168 /* create a new empty context */ 1367 /* create a new empty/source context */
1169 Newz (0, prev->cctx, 1, coro_cctx);
1170 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1171 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1172 } 1370 }
1173 1371
1174 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
1175 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
1176
1177 LOCK;
1178 1374
1179 /* first get rid of the old state */ 1375 /* first get rid of the old state */
1180 save_perl (aTHX_ prev); 1376 save_perl (aTHX_ prev);
1181 1377
1182 if (expect_false (next->flags & CF_NEW)) 1378 if (expect_false (next->flags & CF_NEW))
… …
1187 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1188 } 1384 }
1189 else 1385 else
1190 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1191 1387
1192 prev__cctx = prev->cctx; 1388 assert (!prev->cctx);//D temporary
1193 1389
1194 /* possibly "free" the cctx */ 1390 /* possibly untie and reuse the cctx */
1195 if (expect_true ( 1391 if (expect_true (
1196 prev__cctx->idle_sp == STACKLEVEL 1392 cctx_current->idle_sp == STACKLEVEL
1197 && !(prev__cctx->flags & CC_TRACE) 1393 && !(cctx_current->flags & CC_TRACE)
1198 && !force_cctx 1394 && !force_cctx
1199 )) 1395 ))
1200 { 1396 {
1201 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1397 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1202 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1398 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1203 1399
1204 prev->cctx = 0;
1205
1206 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1207 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1401 /* without this the next cctx_get might destroy the running cctx while still in use */
1208 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1209 if (!next->cctx) 1403 if (expect_true (!next->cctx))
1210 next->cctx = cctx_get (aTHX); 1404 next->cctx = cctx_get (aTHX);
1211 1405
1212 cctx_put (prev__cctx); 1406 cctx_put (cctx_current);
1213 } 1407 }
1408 else
1409 prev->cctx = cctx_current;
1214 1410
1215 ++next->usecount; 1411 ++next->usecount;
1216 1412
1217 if (expect_true (!next->cctx)) 1413 cctx_prev = cctx_current;
1218 next->cctx = cctx_get (aTHX); 1414 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1219 1415
1220 has_throw = !!next->throw; 1416 next->cctx = 0;
1221 1417
1222 if (expect_false (prev__cctx != next->cctx)) 1418 if (expect_false (cctx_prev != cctx_current))
1223 { 1419 {
1224 prev__cctx->top_env = PL_top_env; 1420 cctx_prev->top_env = PL_top_env;
1225 PL_top_env = next->cctx->top_env; 1421 PL_top_env = cctx_current->top_env;
1226 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1227 } 1423 }
1228 1424
1229 free_coro_mortal (aTHX); 1425 transfer_tail (aTHX);
1230 UNLOCK;
1231
1232 if (expect_false (has_throw))
1233 {
1234 struct coro *coro = SvSTATE (coro_current);
1235
1236 if (coro->throw)
1237 {
1238 SV *exception = coro->throw;
1239 coro->throw = 0;
1240 sv_setsv (ERRSV, exception);
1241 croak (0);
1242 }
1243 }
1244 } 1426 }
1245} 1427}
1246
1247struct transfer_args
1248{
1249 struct coro *prev, *next;
1250};
1251 1428
1252#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1429#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1253#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1430#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1254 1431
1255/** high level stuff ********************************************************/ 1432/** high level stuff ********************************************************/
… …
1257static int 1434static int
1258coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
1259{ 1436{
1260 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
1261 return 0; 1438 return 0;
1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
1262 1442
1263 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
1264 1444
1265 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
1266 { 1446 {
1267 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
1268 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
1269 LOCK;
1270 --coro_nready; 1449 --coro_nready;
1271 UNLOCK;
1272 } 1450 }
1273 else 1451 else
1274 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1275 1453
1276 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
1277 { 1455 {
1278 struct coro temp; 1456 struct coro temp;
1279 1457
1280 if (coro->flags & CF_RUNNING) 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1281 croak ("FATAL: tried to destroy currently running coroutine");
1282 1459
1283 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
1284 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
1285 1462
1286 coro_destroy (aTHX_ coro); 1463 coro_destruct (aTHX_ coro);
1287 1464
1288 load_perl (aTHX_ &temp); 1465 load_perl (aTHX_ &temp);
1289 1466
1290 coro->slot = 0; 1467 coro->slot = 0;
1291 } 1468 }
1292 1469
1293 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1294 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1295 1474
1296 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1297 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1298 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1299 1478
… …
1337# define MGf_DUP 0 1516# define MGf_DUP 0
1338#endif 1517#endif
1339}; 1518};
1340 1519
1341static void 1520static void
1342prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1521prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1343{ 1522{
1344 ta->prev = SvSTATE (prev_sv); 1523 ta->prev = SvSTATE (prev_sv);
1345 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1346 TRANSFER_CHECK (*ta); 1525 TRANSFER_CHECK (*ta);
1347} 1526}
1348 1527
1349static void 1528static void
1350api_transfer (SV *prev_sv, SV *next_sv) 1529api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1351{ 1530{
1352 dTHX;
1353 struct transfer_args ta; 1531 struct coro_transfer_args ta;
1354 1532
1355 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1356 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1357} 1535}
1358 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1359/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1360 1561
1361static void 1562INLINE void
1362coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1363{ 1564{
1364 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1365} 1566}
1366 1567
1367static SV * 1568INLINE SV *
1368coro_deq (pTHX) 1569coro_deq (pTHX)
1369{ 1570{
1370 int prio; 1571 int prio;
1371 1572
1372 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1375 1576
1376 return 0; 1577 return 0;
1377} 1578}
1378 1579
1379static int 1580static int
1380api_ready (SV *coro_sv) 1581api_ready (pTHX_ SV *coro_sv)
1381{ 1582{
1382 dTHX;
1383 struct coro *coro; 1583 struct coro *coro;
1584 SV *sv_hook;
1585 void (*xs_hook)(void);
1384 1586
1385 if (SvROK (coro_sv)) 1587 if (SvROK (coro_sv))
1386 coro_sv = SvRV (coro_sv); 1588 coro_sv = SvRV (coro_sv);
1387 1589
1388 coro = SvSTATE (coro_sv); 1590 coro = SvSTATE (coro_sv);
… …
1390 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1391 return 0; 1593 return 0;
1392 1594
1393 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1394 1596
1395 LOCK; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1396 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1599
1600 coro_enq (aTHX_ coro);
1397 ++coro_nready; 1601 ++coro_nready;
1398 UNLOCK; 1602
1603 if (sv_hook)
1604 {
1605 dSP;
1606
1607 ENTER;
1608 SAVETMPS;
1609
1610 PUSHMARK (SP);
1611 PUTBACK;
1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1613
1614 FREETMPS;
1615 LEAVE;
1616 }
1617
1618 if (xs_hook)
1619 xs_hook ();
1399 1620
1400 return 1; 1621 return 1;
1401} 1622}
1402 1623
1403static int 1624static int
1404api_is_ready (SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1405{ 1626{
1406 dTHX;
1407 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1408} 1628}
1409 1629
1630/* expects to own a reference to next->hv */
1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1410static void 1647static void
1411prepare_schedule (pTHX_ struct transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1412{ 1649{
1413 SV *prev_sv, *next_sv;
1414
1415 for (;;) 1650 for (;;)
1416 { 1651 {
1417 LOCK;
1418 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1419 1653
1420 /* nothing to schedule: call the idle handler */
1421 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1422 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1423 dSP; 1673 dSP;
1424 UNLOCK;
1425 1674
1426 ENTER; 1675 ENTER;
1427 SAVETMPS; 1676 SAVETMPS;
1428 1677
1429 PUSHMARK (SP); 1678 PUSHMARK (SP);
1430 PUTBACK; 1679 PUTBACK;
1431 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1432 SPAGAIN;
1433 1681
1434 FREETMPS; 1682 FREETMPS;
1435 LEAVE; 1683 LEAVE;
1436 continue;
1437 } 1684 }
1438
1439 ta->next = SvSTATE (next_sv);
1440
1441 /* cannot transfer to destroyed coros, skip and look for next */
1442 if (expect_false (ta->next->flags & CF_DESTROYED))
1443 {
1444 UNLOCK;
1445 SvREFCNT_dec (next_sv);
1446 /* coro_nready is already taken care of by destroy */
1447 continue;
1448 }
1449
1450 --coro_nready;
1451 UNLOCK;
1452 break;
1453 } 1685 }
1454
1455 /* free this only after the transfer */
1456 prev_sv = SvRV (coro_current);
1457 ta->prev = SvSTATE (prev_sv);
1458 TRANSFER_CHECK (*ta);
1459 assert (ta->next->flags & CF_READY);
1460 ta->next->flags &= ~CF_READY;
1461 SvRV_set (coro_current, next_sv);
1462
1463 LOCK;
1464 free_coro_mortal (aTHX);
1465 coro_mortal = prev_sv;
1466 UNLOCK;
1467} 1686}
1468 1687
1469static void 1688INLINE void
1470prepare_cede (pTHX_ struct transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1471{ 1690{
1472 api_ready (coro_current); 1691 api_ready (aTHX_ coro_current);
1473 prepare_schedule (aTHX_ ta); 1692 prepare_schedule (aTHX_ ta);
1474} 1693}
1475 1694
1695INLINE void
1696prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1697{
1698 SV *prev = SvRV (coro_current);
1699
1700 if (coro_nready)
1701 {
1702 prepare_schedule (aTHX_ ta);
1703 api_ready (aTHX_ prev);
1704 }
1705 else
1706 prepare_nop (aTHX_ ta);
1707}
1708
1709static void
1710api_schedule (pTHX)
1711{
1712 struct coro_transfer_args ta;
1713
1714 prepare_schedule (aTHX_ &ta);
1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1726}
1727
1476static int 1728static int
1477prepare_cede_notself (pTHX_ struct transfer_args *ta) 1729api_cede (pTHX)
1478{ 1730{
1479 if (coro_nready) 1731 struct coro_transfer_args ta;
1480 { 1732
1481 SV *prev = SvRV (coro_current);
1482 prepare_schedule (aTHX_ ta); 1733 prepare_cede (aTHX_ &ta);
1483 api_ready (prev); 1734
1735 if (expect_true (ta.prev != ta.next))
1736 {
1737 TRANSFER (ta, 1);
1484 return 1; 1738 return 1;
1485 } 1739 }
1486 else 1740 else
1487 return 0; 1741 return 0;
1488} 1742}
1489 1743
1490static void
1491api_schedule (void)
1492{
1493 dTHX;
1494 struct transfer_args ta;
1495
1496 prepare_schedule (aTHX_ &ta);
1497 TRANSFER (ta, 1);
1498}
1499
1500static int 1744static int
1501api_cede (void) 1745api_cede_notself (pTHX)
1502{ 1746{
1503 dTHX; 1747 if (coro_nready)
1748 {
1504 struct transfer_args ta; 1749 struct coro_transfer_args ta;
1505 1750
1506 prepare_cede (aTHX_ &ta); 1751 prepare_cede_notself (aTHX_ &ta);
1507
1508 if (expect_true (ta.prev != ta.next))
1509 {
1510 TRANSFER (ta, 1); 1752 TRANSFER (ta, 1);
1511 return 1; 1753 return 1;
1512 } 1754 }
1513 else 1755 else
1514 return 0; 1756 return 0;
1515} 1757}
1516 1758
1517static int 1759static void
1518api_cede_notself (void)
1519{
1520 dTHX;
1521 struct transfer_args ta;
1522
1523 if (prepare_cede_notself (aTHX_ &ta))
1524 {
1525 TRANSFER (ta, 1);
1526 return 1;
1527 }
1528 else
1529 return 0;
1530}
1531
1532static void
1533api_trace (SV *coro_sv, int flags) 1760api_trace (pTHX_ SV *coro_sv, int flags)
1534{ 1761{
1535 dTHX;
1536 struct coro *coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1537 1763
1764 if (coro->flags & CF_RUNNING)
1765 croak ("cannot enable tracing on a running coroutine, caught");
1766
1538 if (flags & CC_TRACE) 1767 if (flags & CC_TRACE)
1539 { 1768 {
1540 if (!coro->cctx) 1769 if (!coro->cctx)
1541 coro->cctx = cctx_new (); 1770 coro->cctx = cctx_new_run ();
1542 else if (!(coro->cctx->flags & CC_TRACE)) 1771 else if (!(coro->cctx->flags & CC_TRACE))
1543 croak ("cannot enable tracing on coroutine with custom stack"); 1772 croak ("cannot enable tracing on coroutine with custom stack, caught");
1544 1773
1545 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1774 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1546 } 1775 }
1547 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1776 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1548 { 1777 {
… …
1553 else 1782 else
1554 coro->slot->runops = RUNOPS_DEFAULT; 1783 coro->slot->runops = RUNOPS_DEFAULT;
1555 } 1784 }
1556} 1785}
1557 1786
1787static void
1788coro_call_on_destroy (pTHX_ struct coro *coro)
1789{
1790 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1791 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1792
1793 if (on_destroyp)
1794 {
1795 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1796
1797 while (AvFILLp (on_destroy) >= 0)
1798 {
1799 dSP; /* don't disturb outer sp */
1800 SV *cb = av_pop (on_destroy);
1801
1802 PUSHMARK (SP);
1803
1804 if (statusp)
1805 {
1806 int i;
1807 AV *status = (AV *)SvRV (*statusp);
1808 EXTEND (SP, AvFILLp (status) + 1);
1809
1810 for (i = 0; i <= AvFILLp (status); ++i)
1811 PUSHs (AvARRAY (status)[i]);
1812 }
1813
1814 PUTBACK;
1815 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1816 }
1817 }
1818}
1819
1820static void
1821slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1822{
1823 int i;
1824 HV *hv = (HV *)SvRV (coro_current);
1825 AV *av = newAV ();
1826
1827 av_extend (av, items - 1);
1828 for (i = 0; i < items; ++i)
1829 av_push (av, SvREFCNT_inc_NN (arg [i]));
1830
1831 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1832
1833 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1834 api_ready (aTHX_ sv_manager);
1835
1836 frame->prepare = prepare_schedule;
1837 frame->check = slf_check_repeat;
1838}
1839
1840/*****************************************************************************/
1841/* async pool handler */
1842
1843static int
1844slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1845{
1846 HV *hv = (HV *)SvRV (coro_current);
1847 struct coro *coro = (struct coro *)frame->data;
1848
1849 if (!coro->invoke_cb)
1850 return 1; /* loop till we have invoke */
1851 else
1852 {
1853 hv_store (hv, "desc", sizeof ("desc") - 1,
1854 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1855
1856 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857
1858 {
1859 dSP;
1860 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1861 PUTBACK;
1862 }
1863
1864 SvREFCNT_dec (GvAV (PL_defgv));
1865 GvAV (PL_defgv) = coro->invoke_av;
1866 coro->invoke_av = 0;
1867
1868 return 0;
1869 }
1870}
1871
1872static void
1873slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1874{
1875 HV *hv = (HV *)SvRV (coro_current);
1876 struct coro *coro = SvSTATE_hv ((SV *)hv);
1877
1878 if (expect_true (coro->saved_deffh))
1879 {
1880 /* subsequent iteration */
1881 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1882 coro->saved_deffh = 0;
1883
1884 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1885 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1886 {
1887 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1888 coro->invoke_av = newAV ();
1889
1890 frame->prepare = prepare_nop;
1891 }
1892 else
1893 {
1894 av_clear (GvAV (PL_defgv));
1895 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1896
1897 coro->prio = 0;
1898
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (aTHX_ coro_current, 0);
1901
1902 frame->prepare = prepare_schedule;
1903 av_push (av_async_pool, SvREFCNT_inc (hv));
1904 }
1905 }
1906 else
1907 {
1908 /* first iteration, simply fall through */
1909 frame->prepare = prepare_nop;
1910 }
1911
1912 frame->check = slf_check_pool_handler;
1913 frame->data = (void *)coro;
1914}
1915
1916/*****************************************************************************/
1917/* rouse callback */
1918
1919#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1920
1921static void
1922coro_rouse_callback (pTHX_ CV *cv)
1923{
1924 dXSARGS;
1925 SV *data = (SV *)GENSUB_ARG;
1926
1927 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1928 {
1929 /* first call, set args */
1930 AV *av = newAV ();
1931 SV *coro = SvRV (data);
1932
1933 SvRV_set (data, (SV *)av);
1934 api_ready (aTHX_ coro);
1935 SvREFCNT_dec (coro);
1936
1937 /* better take a full copy of the arguments */
1938 while (items--)
1939 av_store (av, items, newSVsv (ST (items)));
1940 }
1941
1942 XSRETURN_EMPTY;
1943}
1944
1945static int
1946slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1947{
1948 SV *data = (SV *)frame->data;
1949
1950 if (CORO_THROW)
1951 return 0;
1952
1953 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1954 return 1;
1955
1956 /* now push all results on the stack */
1957 {
1958 dSP;
1959 AV *av = (AV *)SvRV (data);
1960 int i;
1961
1962 EXTEND (SP, AvFILLp (av) + 1);
1963 for (i = 0; i <= AvFILLp (av); ++i)
1964 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1965
1966 /* we have stolen the elements, so ste length to zero and free */
1967 AvFILLp (av) = -1;
1968 av_undef (av);
1969
1970 PUTBACK;
1971 }
1972
1973 return 0;
1974}
1975
1976static void
1977slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 SV *cb;
1980
1981 if (items)
1982 cb = arg [0];
1983 else
1984 {
1985 struct coro *coro = SvSTATE_current;
1986
1987 if (!coro->rouse_cb)
1988 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1989
1990 cb = sv_2mortal (coro->rouse_cb);
1991 coro->rouse_cb = 0;
1992 }
1993
1994 if (!SvROK (cb)
1995 || SvTYPE (SvRV (cb)) != SVt_PVCV
1996 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1997 croak ("Coro::rouse_wait called with illegal callback argument,");
1998
1999 {
2000 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2001 SV *data = (SV *)GENSUB_ARG;
2002
2003 frame->data = (void *)data;
2004 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2005 frame->check = slf_check_rouse_wait;
2006 }
2007}
2008
2009static SV *
2010coro_new_rouse_cb (pTHX)
2011{
2012 HV *hv = (HV *)SvRV (coro_current);
2013 struct coro *coro = SvSTATE_hv (hv);
2014 SV *data = newRV_inc ((SV *)hv);
2015 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2016
2017 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2018 SvREFCNT_dec (data); /* magicext increases the refcount */
2019
2020 SvREFCNT_dec (coro->rouse_cb);
2021 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2022
2023 return cb;
2024}
2025
2026/*****************************************************************************/
2027/* schedule-like-function opcode (SLF) */
2028
2029static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2030static const CV *slf_cv;
2031static SV **slf_argv;
2032static int slf_argc, slf_arga; /* count, allocated */
2033static I32 slf_ax; /* top of stack, for restore */
2034
2035/* this restores the stack in the case we patched the entersub, to */
2036/* recreate the stack frame as perl will on following calls */
2037/* since entersub cleared the stack */
2038static OP *
2039pp_restore (pTHX)
2040{
2041 int i;
2042 SV **SP = PL_stack_base + slf_ax;
2043
2044 PUSHMARK (SP);
2045
2046 EXTEND (SP, slf_argc + 1);
2047
2048 for (i = 0; i < slf_argc; ++i)
2049 PUSHs (sv_2mortal (slf_argv [i]));
2050
2051 PUSHs ((SV *)CvGV (slf_cv));
2052
2053 RETURNOP (slf_restore.op_first);
2054}
2055
2056static void
2057slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2058{
2059 SV **arg = (SV **)slf_frame.data;
2060
2061 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2062}
2063
2064static void
2065slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 if (items != 2)
2068 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2069
2070 frame->prepare = slf_prepare_transfer;
2071 frame->check = slf_check_nop;
2072 frame->data = (void *)arg; /* let's hope it will stay valid */
2073}
2074
2075static void
2076slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 frame->prepare = prepare_schedule;
2079 frame->check = slf_check_nop;
2080}
2081
2082static void
2083slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2084{
2085 struct coro *next = (struct coro *)slf_frame.data;
2086
2087 SvREFCNT_inc_NN (next->hv);
2088 prepare_schedule_to (aTHX_ ta, next);
2089}
2090
2091static void
2092slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 if (!items)
2095 croak ("Coro::schedule_to expects a coroutine argument, caught");
2096
2097 frame->data = (void *)SvSTATE (arg [0]);
2098 frame->prepare = slf_prepare_schedule_to;
2099 frame->check = slf_check_nop;
2100}
2101
2102static void
2103slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 api_ready (aTHX_ SvRV (coro_current));
2106
2107 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2108}
2109
2110static void
2111slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 frame->prepare = prepare_cede;
2114 frame->check = slf_check_nop;
2115}
2116
2117static void
2118slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 frame->prepare = prepare_cede_notself;
2121 frame->check = slf_check_nop;
2122}
2123
2124/*
2125 * these not obviously related functions are all rolled into one
2126 * function to increase chances that they all will call transfer with the same
2127 * stack offset
2128 * SLF stands for "schedule-like-function".
2129 */
2130static OP *
2131pp_slf (pTHX)
2132{
2133 I32 checkmark; /* mark SP to see how many elements check has pushed */
2134
2135 /* set up the slf frame, unless it has already been set-up */
2136 /* the latter happens when a new coro has been started */
2137 /* or when a new cctx was attached to an existing coroutine */
2138 if (expect_true (!slf_frame.prepare))
2139 {
2140 /* first iteration */
2141 dSP;
2142 SV **arg = PL_stack_base + TOPMARK + 1;
2143 int items = SP - arg; /* args without function object */
2144 SV *gv = *sp;
2145
2146 /* do a quick consistency check on the "function" object, and if it isn't */
2147 /* for us, divert to the real entersub */
2148 if (SvTYPE (gv) != SVt_PVGV
2149 || !GvCV (gv)
2150 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2151 return PL_ppaddr[OP_ENTERSUB](aTHX);
2152
2153 if (!(PL_op->op_flags & OPf_STACKED))
2154 {
2155 /* ampersand-form of call, use @_ instead of stack */
2156 AV *av = GvAV (PL_defgv);
2157 arg = AvARRAY (av);
2158 items = AvFILLp (av) + 1;
2159 }
2160
2161 /* now call the init function, which needs to set up slf_frame */
2162 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2163 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2164
2165 /* pop args */
2166 SP = PL_stack_base + POPMARK;
2167
2168 PUTBACK;
2169 }
2170
2171 /* now that we have a slf_frame, interpret it! */
2172 /* we use a callback system not to make the code needlessly */
2173 /* complicated, but so we can run multiple perl coros from one cctx */
2174
2175 do
2176 {
2177 struct coro_transfer_args ta;
2178
2179 slf_frame.prepare (aTHX_ &ta);
2180 TRANSFER (ta, 0);
2181
2182 checkmark = PL_stack_sp - PL_stack_base;
2183 }
2184 while (slf_frame.check (aTHX_ &slf_frame));
2185
2186 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2187
2188 /* exception handling */
2189 if (expect_false (CORO_THROW))
2190 {
2191 SV *exception = sv_2mortal (CORO_THROW);
2192
2193 CORO_THROW = 0;
2194 sv_setsv (ERRSV, exception);
2195 croak (0);
2196 }
2197
2198 /* return value handling - mostly like entersub */
2199 /* make sure we put something on the stack in scalar context */
2200 if (GIMME_V == G_SCALAR)
2201 {
2202 dSP;
2203 SV **bot = PL_stack_base + checkmark;
2204
2205 if (sp == bot) /* too few, push undef */
2206 bot [1] = &PL_sv_undef;
2207 else if (sp != bot + 1) /* too many, take last one */
2208 bot [1] = *sp;
2209
2210 SP = bot + 1;
2211
2212 PUTBACK;
2213 }
2214
2215 return NORMAL;
2216}
2217
2218static void
2219api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2220{
2221 int i;
2222 SV **arg = PL_stack_base + ax;
2223 int items = PL_stack_sp - arg + 1;
2224
2225 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2226
2227 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2228 && PL_op->op_ppaddr != pp_slf)
2229 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2230
2231 CvFLAGS (cv) |= CVf_SLF;
2232 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2233 slf_cv = cv;
2234
2235 /* we patch the op, and then re-run the whole call */
2236 /* we have to put the same argument on the stack for this to work */
2237 /* and this will be done by pp_restore */
2238 slf_restore.op_next = (OP *)&slf_restore;
2239 slf_restore.op_type = OP_CUSTOM;
2240 slf_restore.op_ppaddr = pp_restore;
2241 slf_restore.op_first = PL_op;
2242
2243 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2244
2245 if (PL_op->op_flags & OPf_STACKED)
2246 {
2247 if (items > slf_arga)
2248 {
2249 slf_arga = items;
2250 free (slf_argv);
2251 slf_argv = malloc (slf_arga * sizeof (SV *));
2252 }
2253
2254 slf_argc = items;
2255
2256 for (i = 0; i < items; ++i)
2257 slf_argv [i] = SvREFCNT_inc (arg [i]);
2258 }
2259 else
2260 slf_argc = 0;
2261
2262 PL_op->op_ppaddr = pp_slf;
2263 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2264
2265 PL_op = (OP *)&slf_restore;
2266}
2267
2268/*****************************************************************************/
2269/* PerlIO::cede */
2270
2271typedef struct
2272{
2273 PerlIOBuf base;
2274 NV next, every;
2275} PerlIOCede;
2276
2277static IV
2278PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2279{
2280 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2281
2282 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2283 self->next = nvtime () + self->every;
2284
2285 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2286}
2287
2288static SV *
2289PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2290{
2291 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2292
2293 return newSVnv (self->every);
2294}
2295
2296static IV
2297PerlIOCede_flush (pTHX_ PerlIO *f)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300 double now = nvtime ();
2301
2302 if (now >= self->next)
2303 {
2304 api_cede (aTHX);
2305 self->next = now + self->every;
2306 }
2307
2308 return PerlIOBuf_flush (aTHX_ f);
2309}
2310
2311static PerlIO_funcs PerlIO_cede =
2312{
2313 sizeof(PerlIO_funcs),
2314 "cede",
2315 sizeof(PerlIOCede),
2316 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2317 PerlIOCede_pushed,
2318 PerlIOBuf_popped,
2319 PerlIOBuf_open,
2320 PerlIOBase_binmode,
2321 PerlIOCede_getarg,
2322 PerlIOBase_fileno,
2323 PerlIOBuf_dup,
2324 PerlIOBuf_read,
2325 PerlIOBuf_unread,
2326 PerlIOBuf_write,
2327 PerlIOBuf_seek,
2328 PerlIOBuf_tell,
2329 PerlIOBuf_close,
2330 PerlIOCede_flush,
2331 PerlIOBuf_fill,
2332 PerlIOBase_eof,
2333 PerlIOBase_error,
2334 PerlIOBase_clearerr,
2335 PerlIOBase_setlinebuf,
2336 PerlIOBuf_get_base,
2337 PerlIOBuf_bufsiz,
2338 PerlIOBuf_get_ptr,
2339 PerlIOBuf_get_cnt,
2340 PerlIOBuf_set_ptrcnt,
2341};
2342
2343/*****************************************************************************/
2344/* Coro::Semaphore & Coro::Signal */
2345
2346static SV *
2347coro_waitarray_new (pTHX_ int count)
2348{
2349 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2350 AV *av = newAV ();
2351 SV **ary;
2352
2353 /* unfortunately, building manually saves memory */
2354 Newx (ary, 2, SV *);
2355 AvALLOC (av) = ary;
2356 /*AvARRAY (av) = ary;*/
2357 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2358 AvMAX (av) = 1;
2359 AvFILLp (av) = 0;
2360 ary [0] = newSViv (count);
2361
2362 return newRV_noinc ((SV *)av);
2363}
2364
2365/* semaphore */
2366
2367static void
2368coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2369{
2370 SV *count_sv = AvARRAY (av)[0];
2371 IV count = SvIVX (count_sv);
2372
2373 count += adjust;
2374 SvIVX (count_sv) = count;
2375
2376 /* now wake up as many waiters as are expected to lock */
2377 while (count > 0 && AvFILLp (av) > 0)
2378 {
2379 SV *cb;
2380
2381 /* swap first two elements so we can shift a waiter */
2382 AvARRAY (av)[0] = AvARRAY (av)[1];
2383 AvARRAY (av)[1] = count_sv;
2384 cb = av_shift (av);
2385
2386 if (SvOBJECT (cb))
2387 {
2388 api_ready (aTHX_ cb);
2389 --count;
2390 }
2391 else if (SvTYPE (cb) == SVt_PVCV)
2392 {
2393 dSP;
2394 PUSHMARK (SP);
2395 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2396 PUTBACK;
2397 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2398 }
2399
2400 SvREFCNT_dec (cb);
2401 }
2402}
2403
2404static void
2405coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2406{
2407 /* call $sem->adjust (0) to possibly wake up some other waiters */
2408 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2409}
2410
2411static int
2412slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2413{
2414 AV *av = (AV *)frame->data;
2415 SV *count_sv = AvARRAY (av)[0];
2416
2417 /* if we are about to throw, don't actually acquire the lock, just throw */
2418 if (CORO_THROW)
2419 return 0;
2420 else if (SvIVX (count_sv) > 0)
2421 {
2422 SvSTATE_current->on_destroy = 0;
2423
2424 if (acquire)
2425 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2426 else
2427 coro_semaphore_adjust (aTHX_ av, 0);
2428
2429 return 0;
2430 }
2431 else
2432 {
2433 int i;
2434 /* if we were woken up but can't down, we look through the whole */
2435 /* waiters list and only add us if we aren't in there already */
2436 /* this avoids some degenerate memory usage cases */
2437
2438 for (i = 1; i <= AvFILLp (av); ++i)
2439 if (AvARRAY (av)[i] == SvRV (coro_current))
2440 return 1;
2441
2442 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2443 return 1;
2444 }
2445}
2446
2447static int
2448slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2449{
2450 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2451}
2452
2453static int
2454slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2455{
2456 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2457}
2458
2459static void
2460slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *av = (AV *)SvRV (arg [0]);
2463
2464 if (SvIVX (AvARRAY (av)[0]) > 0)
2465 {
2466 frame->data = (void *)av;
2467 frame->prepare = prepare_nop;
2468 }
2469 else
2470 {
2471 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2472
2473 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2474 frame->prepare = prepare_schedule;
2475
2476 /* to avoid race conditions when a woken-up coro gets terminated */
2477 /* we arrange for a temporary on_destroy that calls adjust (0) */
2478 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2479 }
2480}
2481
2482static void
2483slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2484{
2485 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2486 frame->check = slf_check_semaphore_down;
2487}
2488
2489static void
2490slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2491{
2492 if (items >= 2)
2493 {
2494 /* callback form */
2495 AV *av = (AV *)SvRV (arg [0]);
2496 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2497
2498 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 coro_semaphore_adjust (aTHX_ av, 0);
2502
2503 frame->prepare = prepare_nop;
2504 frame->check = slf_check_nop;
2505 }
2506 else
2507 {
2508 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2509 frame->check = slf_check_semaphore_wait;
2510 }
2511}
2512
2513/* signal */
2514
2515static void
2516coro_signal_wake (pTHX_ AV *av, int count)
2517{
2518 SvIVX (AvARRAY (av)[0]) = 0;
2519
2520 /* now signal count waiters */
2521 while (count > 0 && AvFILLp (av) > 0)
2522 {
2523 SV *cb;
2524
2525 /* swap first two elements so we can shift a waiter */
2526 cb = AvARRAY (av)[0];
2527 AvARRAY (av)[0] = AvARRAY (av)[1];
2528 AvARRAY (av)[1] = cb;
2529
2530 cb = av_shift (av);
2531
2532 api_ready (aTHX_ cb);
2533 sv_setiv (cb, 0); /* signal waiter */
2534 SvREFCNT_dec (cb);
2535
2536 --count;
2537 }
2538}
2539
2540static int
2541slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2542{
2543 /* if we are about to throw, also stop waiting */
2544 return SvROK ((SV *)frame->data) && !CORO_THROW;
2545}
2546
2547static void
2548slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 AV *av = (AV *)SvRV (arg [0]);
2551
2552 if (SvIVX (AvARRAY (av)[0]))
2553 {
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555 frame->prepare = prepare_nop;
2556 frame->check = slf_check_nop;
2557 }
2558 else
2559 {
2560 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2561
2562 av_push (av, waiter);
2563
2564 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2565 frame->prepare = prepare_schedule;
2566 frame->check = slf_check_signal_wait;
2567 }
2568}
2569
2570/*****************************************************************************/
2571/* Coro::AIO */
2572
2573#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2574
2575/* helper storage struct */
2576struct io_state
2577{
2578 int errorno;
2579 I32 laststype; /* U16 in 5.10.0 */
2580 int laststatval;
2581 Stat_t statcache;
2582};
2583
2584static void
2585coro_aio_callback (pTHX_ CV *cv)
2586{
2587 dXSARGS;
2588 AV *state = (AV *)GENSUB_ARG;
2589 SV *coro = av_pop (state);
2590 SV *data_sv = newSV (sizeof (struct io_state));
2591
2592 av_extend (state, items - 1);
2593
2594 sv_upgrade (data_sv, SVt_PV);
2595 SvCUR_set (data_sv, sizeof (struct io_state));
2596 SvPOK_only (data_sv);
2597
2598 {
2599 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2600
2601 data->errorno = errno;
2602 data->laststype = PL_laststype;
2603 data->laststatval = PL_laststatval;
2604 data->statcache = PL_statcache;
2605 }
2606
2607 /* now build the result vector out of all the parameters and the data_sv */
2608 {
2609 int i;
2610
2611 for (i = 0; i < items; ++i)
2612 av_push (state, SvREFCNT_inc_NN (ST (i)));
2613 }
2614
2615 av_push (state, data_sv);
2616
2617 api_ready (aTHX_ coro);
2618 SvREFCNT_dec (coro);
2619 SvREFCNT_dec ((AV *)state);
2620}
2621
2622static int
2623slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2624{
2625 AV *state = (AV *)frame->data;
2626
2627 /* if we are about to throw, return early */
2628 /* this does not cancel the aio request, but at least */
2629 /* it quickly returns */
2630 if (CORO_THROW)
2631 return 0;
2632
2633 /* one element that is an RV? repeat! */
2634 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2635 return 1;
2636
2637 /* restore status */
2638 {
2639 SV *data_sv = av_pop (state);
2640 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2641
2642 errno = data->errorno;
2643 PL_laststype = data->laststype;
2644 PL_laststatval = data->laststatval;
2645 PL_statcache = data->statcache;
2646
2647 SvREFCNT_dec (data_sv);
2648 }
2649
2650 /* push result values */
2651 {
2652 dSP;
2653 int i;
2654
2655 EXTEND (SP, AvFILLp (state) + 1);
2656 for (i = 0; i <= AvFILLp (state); ++i)
2657 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2658
2659 PUTBACK;
2660 }
2661
2662 return 0;
2663}
2664
2665static void
2666slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2667{
2668 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2669 SV *coro_hv = SvRV (coro_current);
2670 struct coro *coro = SvSTATE_hv (coro_hv);
2671
2672 /* put our coroutine id on the state arg */
2673 av_push (state, SvREFCNT_inc_NN (coro_hv));
2674
2675 /* first see whether we have a non-zero priority and set it as AIO prio */
2676 if (coro->prio)
2677 {
2678 dSP;
2679
2680 static SV *prio_cv;
2681 static SV *prio_sv;
2682
2683 if (expect_false (!prio_cv))
2684 {
2685 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2686 prio_sv = newSViv (0);
2687 }
2688
2689 PUSHMARK (SP);
2690 sv_setiv (prio_sv, coro->prio);
2691 XPUSHs (prio_sv);
2692
2693 PUTBACK;
2694 call_sv (prio_cv, G_VOID | G_DISCARD);
2695 }
2696
2697 /* now call the original request */
2698 {
2699 dSP;
2700 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2701 int i;
2702
2703 PUSHMARK (SP);
2704
2705 /* first push all args to the stack */
2706 EXTEND (SP, items + 1);
2707
2708 for (i = 0; i < items; ++i)
2709 PUSHs (arg [i]);
2710
2711 /* now push the callback closure */
2712 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2713
2714 /* now call the AIO function - we assume our request is uncancelable */
2715 PUTBACK;
2716 call_sv ((SV *)req, G_VOID | G_DISCARD);
2717 }
2718
2719 /* now that the requets is going, we loop toll we have a result */
2720 frame->data = (void *)state;
2721 frame->prepare = prepare_schedule;
2722 frame->check = slf_check_aio_req;
2723}
2724
2725static void
2726coro_aio_req_xs (pTHX_ CV *cv)
2727{
2728 dXSARGS;
2729
2730 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2731
2732 XSRETURN_EMPTY;
2733}
2734
2735/*****************************************************************************/
2736
2737#if CORO_CLONE
2738# include "clone.c"
2739#endif
2740
1558MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2741MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1559 2742
1560PROTOTYPES: DISABLE 2743PROTOTYPES: DISABLE
1561 2744
1562BOOT: 2745BOOT:
1563{ 2746{
1564#ifdef USE_ITHREADS 2747#ifdef USE_ITHREADS
1565 MUTEX_INIT (&coro_mutex); 2748# if CORO_PTHREAD
2749 coro_thx = PERL_GET_CONTEXT;
2750# endif
1566#endif 2751#endif
1567 BOOT_PAGESIZE; 2752 BOOT_PAGESIZE;
2753
2754 cctx_current = cctx_new_empty ();
1568 2755
1569 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1570 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1571 2758
1572 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1573 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2760 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1574 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2761 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1575 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1576 2762
1577 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2763 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1578 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2764 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1579 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2765 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1580 2766
… …
1589 main_top_env = PL_top_env; 2775 main_top_env = PL_top_env;
1590 2776
1591 while (main_top_env->je_prev) 2777 while (main_top_env->je_prev)
1592 main_top_env = main_top_env->je_prev; 2778 main_top_env = main_top_env->je_prev;
1593 2779
2780 {
2781 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2782
2783 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2784 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2785
2786 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2787 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2788 }
2789
1594 coroapi.ver = CORO_API_VERSION; 2790 coroapi.ver = CORO_API_VERSION;
1595 coroapi.rev = CORO_API_REVISION; 2791 coroapi.rev = CORO_API_REVISION;
2792
1596 coroapi.transfer = api_transfer; 2793 coroapi.transfer = api_transfer;
2794
2795 coroapi.sv_state = SvSTATE_;
2796 coroapi.execute_slf = api_execute_slf;
2797 coroapi.prepare_nop = prepare_nop;
2798 coroapi.prepare_schedule = prepare_schedule;
2799 coroapi.prepare_cede = prepare_cede;
2800 coroapi.prepare_cede_notself = prepare_cede_notself;
2801
2802 {
2803 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2804
2805 if (!svp) croak ("Time::HiRes is required");
2806 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2807
2808 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2809 }
1597 2810
1598 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2811 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1599} 2812}
1600 2813
1601SV * 2814SV *
1602new (char *klass, ...) 2815new (char *klass, ...)
2816 ALIAS:
2817 Coro::new = 1
1603 CODE: 2818 CODE:
1604{ 2819{
1605 struct coro *coro; 2820 struct coro *coro;
1606 MAGIC *mg; 2821 MAGIC *mg;
1607 HV *hv; 2822 HV *hv;
2823 CV *cb;
1608 int i; 2824 int i;
2825
2826 if (items > 1)
2827 {
2828 cb = coro_sv_2cv (aTHX_ ST (1));
2829
2830 if (!ix)
2831 {
2832 if (CvISXSUB (cb))
2833 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2834
2835 if (!CvROOT (cb))
2836 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2837 }
2838 }
1609 2839
1610 Newz (0, coro, 1, struct coro); 2840 Newz (0, coro, 1, struct coro);
1611 coro->args = newAV (); 2841 coro->args = newAV ();
1612 coro->flags = CF_NEW; 2842 coro->flags = CF_NEW;
1613 2843
… …
1618 coro->hv = hv = newHV (); 2848 coro->hv = hv = newHV ();
1619 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2849 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1620 mg->mg_flags |= MGf_DUP; 2850 mg->mg_flags |= MGf_DUP;
1621 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2851 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1622 2852
2853 if (items > 1)
2854 {
1623 av_extend (coro->args, items - 1); 2855 av_extend (coro->args, items - 1 + ix - 1);
2856
2857 if (ix)
2858 {
2859 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2860 cb = cv_coro_run;
2861 }
2862
2863 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2864
1624 for (i = 1; i < items; i++) 2865 for (i = 2; i < items; i++)
1625 av_push (coro->args, newSVsv (ST (i))); 2866 av_push (coro->args, newSVsv (ST (i)));
2867 }
1626} 2868}
1627 OUTPUT: 2869 OUTPUT:
1628 RETVAL 2870 RETVAL
1629 2871
1630# these not obviously related functions are all rolled into the same xs
1631# function to increase chances that they all will call transfer with the same
1632# stack offset
1633void 2872void
1634_set_stacklevel (...) 2873transfer (...)
1635 ALIAS: 2874 PROTOTYPE: $$
1636 Coro::State::transfer = 1 2875 CODE:
1637 Coro::schedule = 2 2876 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1638 Coro::cede = 3
1639 Coro::cede_notself = 4
1640 CODE:
1641{
1642 struct transfer_args ta;
1643
1644 PUTBACK;
1645 switch (ix)
1646 {
1647 case 0:
1648 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1649 ta.next = 0;
1650 break;
1651
1652 case 1:
1653 if (items != 2)
1654 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1655
1656 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1657 break;
1658
1659 case 2:
1660 prepare_schedule (aTHX_ &ta);
1661 break;
1662
1663 case 3:
1664 prepare_cede (aTHX_ &ta);
1665 break;
1666
1667 case 4:
1668 if (!prepare_cede_notself (aTHX_ &ta))
1669 XSRETURN_EMPTY;
1670
1671 break;
1672 }
1673 SPAGAIN;
1674
1675 BARRIER;
1676 PUTBACK;
1677 TRANSFER (ta, 0);
1678 SPAGAIN; /* might be the sp of a different coroutine now */
1679 /* be extra careful not to ever do anything after TRANSFER */
1680}
1681 2877
1682bool 2878bool
1683_destroy (SV *coro_sv) 2879_destroy (SV *coro_sv)
1684 CODE: 2880 CODE:
1685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2881 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1686 OUTPUT: 2882 OUTPUT:
1687 RETVAL 2883 RETVAL
1688 2884
1689void 2885void
1690_exit (code) 2886_exit (int code)
1691 int code
1692 PROTOTYPE: $ 2887 PROTOTYPE: $
1693 CODE: 2888 CODE:
1694 _exit (code); 2889 _exit (code);
1695 2890
2891SV *
2892clone (Coro::State coro)
2893 CODE:
2894{
2895#if CORO_CLONE
2896 struct coro *ncoro = coro_clone (coro);
2897 MAGIC *mg;
2898 /* TODO: too much duplication */
2899 ncoro->hv = newHV ();
2900 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2901 mg->mg_flags |= MGf_DUP;
2902 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2903#else
2904 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2905#endif
2906}
2907 OUTPUT:
2908 RETVAL
2909
1696int 2910int
1697cctx_stacksize (int new_stacksize = 0) 2911cctx_stacksize (int new_stacksize = 0)
2912 PROTOTYPE: ;$
1698 CODE: 2913 CODE:
1699 RETVAL = coro_stacksize; 2914 RETVAL = cctx_stacksize;
1700 if (new_stacksize) 2915 if (new_stacksize)
2916 {
1701 coro_stacksize = new_stacksize; 2917 cctx_stacksize = new_stacksize;
2918 ++cctx_gen;
2919 }
1702 OUTPUT: 2920 OUTPUT:
1703 RETVAL 2921 RETVAL
1704 2922
1705int 2923int
2924cctx_max_idle (int max_idle = 0)
2925 PROTOTYPE: ;$
2926 CODE:
2927 RETVAL = cctx_max_idle;
2928 if (max_idle > 1)
2929 cctx_max_idle = max_idle;
2930 OUTPUT:
2931 RETVAL
2932
2933int
1706cctx_count () 2934cctx_count ()
2935 PROTOTYPE:
1707 CODE: 2936 CODE:
1708 RETVAL = cctx_count; 2937 RETVAL = cctx_count;
1709 OUTPUT: 2938 OUTPUT:
1710 RETVAL 2939 RETVAL
1711 2940
1712int 2941int
1713cctx_idle () 2942cctx_idle ()
2943 PROTOTYPE:
1714 CODE: 2944 CODE:
1715 RETVAL = cctx_idle; 2945 RETVAL = cctx_idle;
1716 OUTPUT: 2946 OUTPUT:
1717 RETVAL 2947 RETVAL
1718 2948
1719void 2949void
1720list () 2950list ()
2951 PROTOTYPE:
1721 PPCODE: 2952 PPCODE:
1722{ 2953{
1723 struct coro *coro; 2954 struct coro *coro;
1724 for (coro = coro_first; coro; coro = coro->next) 2955 for (coro = coro_first; coro; coro = coro->next)
1725 if (coro->hv) 2956 if (coro->hv)
… …
1730call (Coro::State coro, SV *coderef) 2961call (Coro::State coro, SV *coderef)
1731 ALIAS: 2962 ALIAS:
1732 eval = 1 2963 eval = 1
1733 CODE: 2964 CODE:
1734{ 2965{
1735 if (coro->mainstack) 2966 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1736 { 2967 {
1737 struct coro temp; 2968 struct coro temp;
1738 2969
1739 if (!(coro->flags & CF_RUNNING)) 2970 if (!(coro->flags & CF_RUNNING))
1740 { 2971 {
… …
1784 RETVAL = boolSV (coro->flags & ix); 3015 RETVAL = boolSV (coro->flags & ix);
1785 OUTPUT: 3016 OUTPUT:
1786 RETVAL 3017 RETVAL
1787 3018
1788void 3019void
3020throw (Coro::State self, SV *throw = &PL_sv_undef)
3021 PROTOTYPE: $;$
3022 CODE:
3023{
3024 struct coro *current = SvSTATE_current;
3025 SV **throwp = self == current ? &CORO_THROW : &self->except;
3026 SvREFCNT_dec (*throwp);
3027 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3028}
3029
3030void
1789api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3031api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3032 PROTOTYPE: $;$
3033 C_ARGS: aTHX_ coro, flags
1790 3034
1791SV * 3035SV *
1792has_stack (Coro::State coro) 3036has_cctx (Coro::State coro)
1793 PROTOTYPE: $ 3037 PROTOTYPE: $
1794 CODE: 3038 CODE:
1795 RETVAL = boolSV (!!coro->cctx); 3039 /* maybe manage the running flag differently */
3040 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1796 OUTPUT: 3041 OUTPUT:
1797 RETVAL 3042 RETVAL
1798 3043
1799int 3044int
1800is_traced (Coro::State coro) 3045is_traced (Coro::State coro)
… …
1802 CODE: 3047 CODE:
1803 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3048 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1804 OUTPUT: 3049 OUTPUT:
1805 RETVAL 3050 RETVAL
1806 3051
1807IV 3052UV
1808rss (Coro::State coro) 3053rss (Coro::State coro)
1809 PROTOTYPE: $ 3054 PROTOTYPE: $
1810 ALIAS: 3055 ALIAS:
1811 usecount = 1 3056 usecount = 1
1812 CODE: 3057 CODE:
… …
1818 OUTPUT: 3063 OUTPUT:
1819 RETVAL 3064 RETVAL
1820 3065
1821void 3066void
1822force_cctx () 3067force_cctx ()
3068 PROTOTYPE:
1823 CODE: 3069 CODE:
1824 struct coro *coro = SvSTATE (coro_current);
1825 coro->cctx->idle_sp = 0; 3070 cctx_current->idle_sp = 0;
3071
3072void
3073swap_defsv (Coro::State self)
3074 PROTOTYPE: $
3075 ALIAS:
3076 swap_defav = 1
3077 CODE:
3078 if (!self->slot)
3079 croak ("cannot swap state with coroutine that has no saved state,");
3080 else
3081 {
3082 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3083 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3084
3085 SV *tmp = *src; *src = *dst; *dst = tmp;
3086 }
3087
1826 3088
1827MODULE = Coro::State PACKAGE = Coro 3089MODULE = Coro::State PACKAGE = Coro
1828 3090
1829BOOT: 3091BOOT:
1830{ 3092{
1831 int i; 3093 int i;
1832 3094
1833 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3095 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1834 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3096 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3097 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3098 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3099 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1835 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3100 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3101 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3102 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
1836 3103
1837 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3104 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1838 SvREADONLY_on (coro_current); 3105 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3106 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3107 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1839 3108
1840 coro_stash = gv_stashpv ("Coro", TRUE); 3109 coro_stash = gv_stashpv ("Coro", TRUE);
1841 3110
1842 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1843 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1848 3117
1849 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1850 coro_ready[i] = newAV (); 3119 coro_ready[i] = newAV ();
1851 3120
1852 { 3121 {
1853 SV *sv = perl_get_sv ("Coro::API", TRUE); 3122 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1854 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1855 3123
1856 coroapi.schedule = api_schedule; 3124 coroapi.schedule = api_schedule;
3125 coroapi.schedule_to = api_schedule_to;
1857 coroapi.cede = api_cede; 3126 coroapi.cede = api_cede;
1858 coroapi.cede_notself = api_cede_notself; 3127 coroapi.cede_notself = api_cede_notself;
1859 coroapi.ready = api_ready; 3128 coroapi.ready = api_ready;
1860 coroapi.is_ready = api_is_ready; 3129 coroapi.is_ready = api_is_ready;
1861 coroapi.nready = &coro_nready; 3130 coroapi.nready = coro_nready;
1862 coroapi.current = coro_current; 3131 coroapi.current = coro_current;
1863 3132
1864 GCoroAPI = &coroapi; 3133 /*GCoroAPI = &coroapi;*/
1865 sv_setiv (sv, (IV)&coroapi); 3134 sv_setiv (sv, (IV)&coroapi);
1866 SvREADONLY_on (sv); 3135 SvREADONLY_on (sv);
1867 } 3136 }
1868} 3137}
3138
3139void
3140terminate (...)
3141 CODE:
3142 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3143
3144void
3145schedule (...)
3146 CODE:
3147 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3148
3149void
3150schedule_to (...)
3151 CODE:
3152 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3153
3154void
3155cede_to (...)
3156 CODE:
3157 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3158
3159void
3160cede (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_cede);
3163
3164void
3165cede_notself (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3168
3169void
3170_cancel (Coro::State self)
3171 CODE:
3172 coro_state_destroy (aTHX_ self);
3173 coro_call_on_destroy (aTHX_ self);
1869 3174
1870void 3175void
1871_set_current (SV *current) 3176_set_current (SV *current)
1872 PROTOTYPE: $ 3177 PROTOTYPE: $
1873 CODE: 3178 CODE:
1874 SvREFCNT_dec (SvRV (coro_current)); 3179 SvREFCNT_dec (SvRV (coro_current));
1875 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3180 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3181
3182void
3183_set_readyhook (SV *hook)
3184 PROTOTYPE: $
3185 CODE:
3186 SvREFCNT_dec (coro_readyhook);
3187 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1876 3188
1877int 3189int
1878prio (Coro::State coro, int newprio = 0) 3190prio (Coro::State coro, int newprio = 0)
3191 PROTOTYPE: $;$
1879 ALIAS: 3192 ALIAS:
1880 nice = 1 3193 nice = 1
1881 CODE: 3194 CODE:
1882{ 3195{
1883 RETVAL = coro->prio; 3196 RETVAL = coro->prio;
… …
1898 3211
1899SV * 3212SV *
1900ready (SV *self) 3213ready (SV *self)
1901 PROTOTYPE: $ 3214 PROTOTYPE: $
1902 CODE: 3215 CODE:
1903 RETVAL = boolSV (api_ready (self)); 3216 RETVAL = boolSV (api_ready (aTHX_ self));
1904 OUTPUT: 3217 OUTPUT:
1905 RETVAL 3218 RETVAL
1906 3219
1907int 3220int
1908nready (...) 3221nready (...)
… …
1911 RETVAL = coro_nready; 3224 RETVAL = coro_nready;
1912 OUTPUT: 3225 OUTPUT:
1913 RETVAL 3226 RETVAL
1914 3227
1915void 3228void
1916throw (Coro::State self, SV *throw = &PL_sv_undef) 3229_pool_handler (...)
3230 CODE:
3231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3232
3233void
3234async_pool (SV *cv, ...)
1917 PROTOTYPE: $;$ 3235 PROTOTYPE: &@
3236 PPCODE:
3237{
3238 HV *hv = (HV *)av_pop (av_async_pool);
3239 AV *av = newAV ();
3240 SV *cb = ST (0);
3241 int i;
3242
3243 av_extend (av, items - 2);
3244 for (i = 1; i < items; ++i)
3245 av_push (av, SvREFCNT_inc_NN (ST (i)));
3246
3247 if ((SV *)hv == &PL_sv_undef)
3248 {
3249 PUSHMARK (SP);
3250 EXTEND (SP, 2);
3251 PUSHs (sv_Coro);
3252 PUSHs ((SV *)cv_pool_handler);
3253 PUTBACK;
3254 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3255 SPAGAIN;
3256
3257 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3258 }
3259
3260 {
3261 struct coro *coro = SvSTATE_hv (hv);
3262
3263 assert (!coro->invoke_cb);
3264 assert (!coro->invoke_av);
3265 coro->invoke_cb = SvREFCNT_inc (cb);
3266 coro->invoke_av = av;
3267 }
3268
3269 api_ready (aTHX_ (SV *)hv);
3270
3271 if (GIMME_V != G_VOID)
3272 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3273 else
3274 SvREFCNT_dec (hv);
3275}
3276
3277SV *
3278rouse_cb ()
3279 PROTOTYPE:
3280 CODE:
3281 RETVAL = coro_new_rouse_cb (aTHX);
3282 OUTPUT:
3283 RETVAL
3284
3285void
3286rouse_wait (...)
3287 PROTOTYPE: ;$
3288 PPCODE:
3289 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3290
3291
3292MODULE = Coro::State PACKAGE = PerlIO::cede
3293
3294BOOT:
3295 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3296
3297
3298MODULE = Coro::State PACKAGE = Coro::Semaphore
3299
3300SV *
3301new (SV *klass, SV *count = 0)
3302 CODE:
3303 RETVAL = sv_bless (
3304 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3305 GvSTASH (CvGV (cv))
3306 );
3307 OUTPUT:
3308 RETVAL
3309
3310# helper for Coro::Channel
3311SV *
3312_alloc (int count)
3313 CODE:
3314 RETVAL = coro_waitarray_new (aTHX_ count);
3315 OUTPUT:
3316 RETVAL
3317
3318SV *
3319count (SV *self)
3320 CODE:
3321 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3322 OUTPUT:
3323 RETVAL
3324
3325void
3326up (SV *self, int adjust = 1)
3327 ALIAS:
3328 adjust = 1
1918 CODE: 3329 CODE:
1919 SvREFCNT_dec (self->throw); 3330 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1920 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1921 3331
1922void 3332void
1923swap_defsv (Coro::State self) 3333down (...)
1924 PROTOTYPE: $
1925 ALIAS:
1926 swap_defav = 1
1927 CODE: 3334 CODE:
1928 if (!self->slot) 3335 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
1929 croak ("cannot swap state with coroutine that has no saved state"); 3336
3337void
3338wait (...)
3339 CODE:
3340 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3341
3342void
3343try (SV *self)
3344 PPCODE:
3345{
3346 AV *av = (AV *)SvRV (self);
3347 SV *count_sv = AvARRAY (av)[0];
3348 IV count = SvIVX (count_sv);
3349
3350 if (count > 0)
3351 {
3352 --count;
3353 SvIVX (count_sv) = count;
3354 XSRETURN_YES;
3355 }
3356 else
3357 XSRETURN_NO;
3358}
3359
3360void
3361waiters (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 int wcount = AvFILLp (av) + 1 - 1;
3366
3367 if (GIMME_V == G_SCALAR)
3368 XPUSHs (sv_2mortal (newSViv (wcount)));
1930 else 3369 else
1931 { 3370 {
1932 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3371 int i;
1933 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3372 EXTEND (SP, wcount);
1934 3373 for (i = 1; i <= wcount; ++i)
1935 SV *tmp = *src; *src = *dst; *dst = tmp; 3374 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
1936 } 3375 }
3376}
1937 3377
1938# for async_pool speedup 3378MODULE = Coro::State PACKAGE = Coro::Signal
3379
3380SV *
3381new (SV *klass)
3382 CODE:
3383 RETVAL = sv_bless (
3384 coro_waitarray_new (aTHX_ 0),
3385 GvSTASH (CvGV (cv))
3386 );
3387 OUTPUT:
3388 RETVAL
3389
1939void 3390void
1940_pool_1 (SV *cb) 3391wait (...)
1941 CODE: 3392 CODE:
1942{ 3393 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
1943 struct coro *coro = SvSTATE (coro_current);
1944 HV *hv = (HV *)SvRV (coro_current);
1945 AV *defav = GvAV (PL_defgv);
1946 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1947 AV *invoke_av;
1948 int i, len;
1949
1950 if (!invoke)
1951 {
1952 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1953 croak ("\3async_pool terminate\2\n");
1954 }
1955
1956 SvREFCNT_dec (coro->saved_deffh);
1957 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1958
1959 hv_store (hv, "desc", sizeof ("desc") - 1,
1960 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1961
1962 invoke_av = (AV *)SvRV (invoke);
1963 len = av_len (invoke_av);
1964
1965 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1966
1967 if (len > 0)
1968 {
1969 av_fill (defav, len - 1);
1970 for (i = 0; i < len; ++i)
1971 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1972 }
1973
1974 SvREFCNT_dec (invoke);
1975}
1976 3394
1977void 3395void
1978_pool_2 (SV *cb) 3396broadcast (SV *self)
3397 CODE:
3398{
3399 AV *av = (AV *)SvRV (self);
3400 coro_signal_wake (aTHX_ av, AvFILLp (av));
3401}
3402
3403void
3404send (SV *self)
3405 CODE:
3406{
3407 AV *av = (AV *)SvRV (self);
3408
3409 if (AvFILLp (av))
3410 coro_signal_wake (aTHX_ av, 1);
3411 else
3412 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3413}
3414
3415IV
3416awaited (SV *self)
1979 CODE: 3417 CODE:
1980{ 3418 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
1981 struct coro *coro = SvSTATE (coro_current);
1982
1983 sv_setsv (cb, &PL_sv_undef);
1984
1985 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1986 coro->saved_deffh = 0;
1987
1988 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1989 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1990 {
1991 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1992 croak ("\3async_pool terminate\2\n");
1993 }
1994
1995 av_clear (GvAV (PL_defgv));
1996 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1997 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1998
1999 coro->prio = 0;
2000
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (coro_current, 0);
2003
2004 av_push (av_async_pool, newSVsv (coro_current));
2005}
2006
2007
2008MODULE = Coro::State PACKAGE = Coro::AIO
2009
2010SV *
2011_get_state ()
2012 CODE:
2013{
2014 struct io_state *data;
2015
2016 RETVAL = newSV (sizeof (struct io_state));
2017 data = (struct io_state *)SvPVX (RETVAL);
2018 SvCUR_set (RETVAL, sizeof (struct io_state));
2019 SvPOK_only (RETVAL);
2020
2021 data->errorno = errno;
2022 data->laststype = PL_laststype;
2023 data->laststatval = PL_laststatval;
2024 data->statcache = PL_statcache;
2025}
2026 OUTPUT: 3419 OUTPUT:
2027 RETVAL 3420 RETVAL
2028 3421
3422
3423MODULE = Coro::State PACKAGE = Coro::AnyEvent
3424
3425BOOT:
3426 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3427
2029void 3428void
2030_set_state (char *data_) 3429_schedule (...)
2031 PROTOTYPE: $
2032 CODE: 3430 CODE:
2033{ 3431{
2034 struct io_state *data = (void *)data_; 3432 static int incede;
2035 3433
2036 errno = data->errorno; 3434 api_cede_notself (aTHX);
2037 PL_laststype = data->laststype;
2038 PL_laststatval = data->laststatval;
2039 PL_statcache = data->statcache;
2040}
2041 3435
3436 ++incede;
3437 while (coro_nready >= incede && api_cede (aTHX))
3438 ;
3439
3440 sv_setsv (sv_activity, &PL_sv_undef);
3441 if (coro_nready >= incede)
3442 {
3443 PUSHMARK (SP);
3444 PUTBACK;
3445 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3446 }
3447
3448 --incede;
3449}
3450
3451
3452MODULE = Coro::State PACKAGE = Coro::AIO
3453
3454void
3455_register (char *target, char *proto, SV *req)
3456 CODE:
3457{
3458 CV *req_cv = coro_sv_2cv (aTHX_ req);
3459 /* newXSproto doesn't return the CV on 5.8 */
3460 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3461 sv_setpv ((SV *)slf_cv, proto);
3462 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3463}
3464

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