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Comparing Coro/Coro/State.xs (file contents):
Revision 1.230 by root, Mon Apr 14 11:28:59 2008 UTC vs.
Revision 1.326 by root, Mon Nov 24 04:56:38 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>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
54 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
55 61
56#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
57# ifndef PL_ppaddr 63# ifndef PL_ppaddr
58# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
59# endif 65# endif
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 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
77/* 5.8.8 */ 93/* 5.8.8 */
78#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
80#endif 96#endif
81#ifndef newSV 97#ifndef newSV
82# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
83#endif 99#endif
84 100#ifndef CvISXSUB_on
85/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
86#ifndef CxHASARGS 102#endif
87# 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)
88#endif 108#endif
89 109
90/* 5.8.7 */ 110/* 5.8.7 */
91#ifndef SvRV_set 111#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 126#endif
107 127
108/* 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
109 * 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
110#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
111#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
112 137
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
114 139
115#if __GNUC__ >= 3 140#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
119#else 144#else
120# define attribute(x) 145# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
123#endif 148#endif
124 149
125#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
127 152
128#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
129 154
130#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
131 157
132#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 159# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
136#else
137# define LOCK (void)0
138# define UNLOCK (void)0
139#endif 161# endif
162#endif
140 163
141/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
142struct io_state
143{
144 int errorno;
145 I32 laststype;
146 int laststatval;
147 Stat_t statcache;
148};
149 165
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;
150static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 174static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
155static 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 */
180static SV *sv_idle; /* $Coro::idle */
156 181
157static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 184static SV *rv_diehook;
160static SV *rv_warnhook; 185static SV *rv_warnhook;
161static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
162 187
163/* async_pool helper stuff */ 188/* async_pool helper stuff */
164static SV *sv_pool_rss; 189static SV *sv_pool_rss;
165static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
166static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
167 199
168static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
170 202
171enum { 203enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 210};
179 211
180/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 213typedef struct coro_cctx
214{
182 struct coro_cctx *next; 215 struct coro_cctx *next;
183 216
184 /* the stack */ 217 /* the stack */
185 void *sptr; 218 void *sptr;
186 size_t ssize; 219 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191 JMPENV *top_env; 224 JMPENV *top_env;
192 coro_context cctx; 225 coro_context cctx;
193 226
227 U32 gen;
194#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
195 int valgrind_id; 229 int valgrind_id;
196#endif 230#endif
197 unsigned char flags; 231 unsigned char flags;
198} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
199 237
200enum { 238enum {
201 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
202 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
203 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
205}; 243};
206 244
207/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct { 246typedef struct
247{
209 SV *defsv; 248 SV *defsv;
210 AV *defav; 249 AV *defav;
211 SV *errsv; 250 SV *errsv;
212 SV *irsgv; 251 SV *irsgv;
213#define VAR(name,type) type name; 252#define VAR(name,type) type name;
… …
217 256
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 257#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219 258
220/* this is a structure representing a perl-level coroutine */ 259/* this is a structure representing a perl-level coroutine */
221struct coro { 260struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 261 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 262 coro_cctx *cctx;
224 263
225 /* process data */ 264 /* state data */
265 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 266 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 267 perl_slots *slot; /* basically the saved sp */
228 268
269 CV *startcv; /* the CV to execute */
229 AV *args; /* data associated with this coroutine (initial args) */ 270 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 271 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 272 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */ 273 HV *hv; /* the perl hash associated with this coro, if any */
274 void (*on_destroy)(pTHX_ struct coro *coro);
233 275
234 /* statistics */ 276 /* statistics */
235 int usecount; /* number of transfers to this coro */ 277 int usecount; /* number of transfers to this coro */
236 278
237 /* coro process data */ 279 /* coro process data */
238 int prio; 280 int prio;
239 SV *throw; /* exception to be thrown */ 281 SV *except; /* exception to be thrown */
282 SV *rouse_cb;
240 283
241 /* async_pool */ 284 /* async_pool */
242 SV *saved_deffh; 285 SV *saved_deffh;
286 SV *invoke_cb;
287 AV *invoke_av;
243 288
244 /* linked list */ 289 /* linked list */
245 struct coro *next, *prev; 290 struct coro *next, *prev;
246}; 291};
247 292
248typedef struct coro *Coro__State; 293typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 294typedef struct coro *Coro__State_or_hashref;
295
296/* the following variables are effectively part of the perl context */
297/* and get copied between struct coro and these variables */
298/* the mainr easonw e don't support windows process emulation */
299static struct CoroSLF slf_frame; /* the current slf frame */
250 300
251/** Coro ********************************************************************/ 301/** Coro ********************************************************************/
252 302
253#define PRIO_MAX 3 303#define PRIO_MAX 3
254#define PRIO_HIGH 1 304#define PRIO_HIGH 1
… …
257#define PRIO_IDLE -3 307#define PRIO_IDLE -3
258#define PRIO_MIN -4 308#define PRIO_MIN -4
259 309
260/* for Coro.pm */ 310/* for Coro.pm */
261static SV *coro_current; 311static SV *coro_current;
312static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready; 314static CV *cv_coro_run, *cv_coro_terminate;
264static struct coro *coro_first; 315static struct coro *coro_first;
316#define coro_nready coroapi.nready
265 317
266/** lowlevel stuff **********************************************************/ 318/** lowlevel stuff **********************************************************/
267 319
268static SV * 320static SV *
269coro_get_sv (pTHX_ const char *name, int create) 321coro_get_sv (pTHX_ const char *name, int create)
… …
293 get_hv (name, create); 345 get_hv (name, create);
294#endif 346#endif
295 return get_hv (name, create); 347 return get_hv (name, create);
296} 348}
297 349
350/* may croak */
351INLINE CV *
352coro_sv_2cv (pTHX_ SV *sv)
353{
354 HV *st;
355 GV *gvp;
356 return sv_2cv (sv, &st, &gvp, 0);
357}
358
298static AV * 359static AV *
299coro_clone_padlist (pTHX_ CV *cv) 360coro_derive_padlist (pTHX_ CV *cv)
300{ 361{
301 AV *padlist = CvPADLIST (cv); 362 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 363 AV *newpadlist, *newpad;
303 364
304 newpadlist = newAV (); 365 newpadlist = newAV ();
… …
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 370 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 371#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 372 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 373 --AvFILLp (padlist);
313 374
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 375 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 376 av_store (newpadlist, 1, (SV *)newpad);
316 377
317 return newpadlist; 378 return newpadlist;
318} 379}
319 380
… …
349 410
350 /* casting is fun. */ 411 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 412 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 413 free_padlist (aTHX_ padlist);
353 414
415 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
416
354 return 0; 417 return 0;
355} 418}
356 419
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 420#define CORO_MAGIC_type_cv 26
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 421#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 422
360static MGVTBL coro_cv_vtbl = { 423static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 424 0, 0, 0, 0,
362 coro_cv_free 425 coro_cv_free
363}; 426};
364 427
428#define CORO_MAGIC_NN(sv, type) \
429 (expect_true (SvMAGIC (sv)->mg_type == type) \
430 ? SvMAGIC (sv) \
431 : mg_find (sv, type))
432
365#define CORO_MAGIC(sv,type) \ 433#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 434 (expect_true (SvMAGIC (sv)) \
367 ? SvMAGIC (sv)->mg_type == type \ 435 ? CORO_MAGIC_NN (sv, type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \
370 : 0 436 : 0)
371 437
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 438#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 439#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
374 440
375static struct coro * 441INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 442SvSTATE_ (pTHX_ SV *coro)
377{ 443{
378 HV *stash; 444 HV *stash;
379 MAGIC *mg; 445 MAGIC *mg;
380 446
… …
395 mg = CORO_MAGIC_state (coro); 461 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr; 462 return (struct coro *)mg->mg_ptr;
397} 463}
398 464
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 465#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
466
467/* faster than SvSTATE, but expects a coroutine hv */
468#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
469#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
400 470
401/* the next two functions merely cache the padlists */ 471/* the next two functions merely cache the padlists */
402static void 472static void
403get_padlist (pTHX_ CV *cv) 473get_padlist (pTHX_ CV *cv)
404{ 474{
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 478 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 479 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 480 else
411 { 481 {
412#if CORO_PREFER_PERL_FUNCTIONS 482#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 483 /* this is probably cleaner? but also slower! */
484 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 485 CV *cp = Perl_cv_clone (aTHX_ cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 486 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 487 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 488 SvREFCNT_dec (cp);
418#else 489#else
419 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 490 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
420#endif 491#endif
421 } 492 }
422} 493}
423 494
424static void 495static void
… …
470 CvPADLIST (cv) = (AV *)POPs; 541 CvPADLIST (cv) = (AV *)POPs;
471 } 542 }
472 543
473 PUTBACK; 544 PUTBACK;
474 } 545 }
546
547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
475} 549}
476 550
477static void 551static void
478save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
479{ 553{
554 c->except = CORO_THROW;
555 c->slf_frame = slf_frame;
556
480 { 557 {
481 dSP; 558 dSP;
482 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 560 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 561 PERL_SI *top_si = PL_curstackinfo;
… …
502 579
503 if (expect_true (CvDEPTH (cv))) 580 if (expect_true (CvDEPTH (cv)))
504 { 581 {
505 EXTEND (SP, 3); 582 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 583 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 584 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 585 PUSHs ((SV *)cv);
509 586
510 CvDEPTH (cv) = 0; 587 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 588 get_padlist (aTHX_ cv);
512 } 589 }
… …
551 #undef VAR 628 #undef VAR
552 } 629 }
553} 630}
554 631
555/* 632/*
556 * allocate various perl stacks. This is an exact copy 633 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 634 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 635 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 636 * not usually need a lot of stackspace.
560 */ 637 */
561#if CORO_PREFER_PERL_FUNCTIONS 638#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 639# define coro_init_stacks(thx) init_stacks ()
563#else 640#else
564static void 641static void
565coro_init_stacks (pTHX) 642coro_init_stacks (pTHX)
566{ 643{
567 PL_curstackinfo = new_stackinfo(32, 8); 644 PL_curstackinfo = new_stackinfo(32, 8);
… …
604 681
605/* 682/*
606 * destroy the stacks, the callchain etc... 683 * destroy the stacks, the callchain etc...
607 */ 684 */
608static void 685static void
609coro_destroy_stacks (pTHX) 686coro_destruct_stacks (pTHX)
610{ 687{
611 while (PL_curstackinfo->si_next) 688 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 689 PL_curstackinfo = PL_curstackinfo->si_next;
613 690
614 while (PL_curstackinfo) 691 while (PL_curstackinfo)
… …
630#if !PERL_VERSION_ATLEAST (5,10,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 708 Safefree (PL_retstack);
632#endif 709#endif
633} 710}
634 711
712#define CORO_RSS \
713 rss += sizeof (SYM (curstackinfo)); \
714 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
715 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
716 rss += SYM (tmps_max) * sizeof (SV *); \
717 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
718 rss += SYM (scopestack_max) * sizeof (I32); \
719 rss += SYM (savestack_max) * sizeof (ANY);
720
635static size_t 721static size_t
636coro_rss (pTHX_ struct coro *coro) 722coro_rss (pTHX_ struct coro *coro)
637{ 723{
638 size_t rss = sizeof (*coro); 724 size_t rss = sizeof (*coro);
639 725
640 if (coro->mainstack) 726 if (coro->mainstack)
641 { 727 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING) 728 if (coro->flags & CF_RUNNING)
646 { 729 {
647 slot = &tmp_slot; 730 #define SYM(sym) PL_ ## sym
648 731 CORO_RSS;
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR 732 #undef SYM
652 } 733 }
653 else 734 else
654 slot = coro->slot; 735 {
655 736 #define SYM(sym) coro->slot->sym
656 rss += sizeof (slot->curstackinfo); 737 CORO_RSS;
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 738 #undef SYM
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 739 }
659 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY);
663
664#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *);
666#endif
667 } 740 }
668 741
669 return rss; 742 return rss;
670} 743}
671 744
672/** coroutine stack handling ************************************************/ 745/** coroutine stack handling ************************************************/
673 746
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 747static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 748static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
749static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
750
751/* apparently < 5.8.8 */
752#ifndef MgPV_nolen_const
753#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
754 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
755 (const char*)(mg)->mg_ptr)
756#endif
676 757
677/* 758/*
678 * This overrides the default magic get method of %SIG elements. 759 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 760 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide 761 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 769{
689 const char *s = MgPV_nolen_const (mg); 770 const char *s = MgPV_nolen_const (mg);
690 771
691 if (*s == '_') 772 if (*s == '_')
692 { 773 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 774 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
782 return 0;
783 }
695 } 784 }
696 785
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 786 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = 0;
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 811}
699 812
700static int 813static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 814coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 815{
… …
712 if (svp) 825 if (svp)
713 { 826 {
714 SV *old = *svp; 827 SV *old = *svp;
715 *svp = newSVsv (sv); 828 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 829 SvREFCNT_dec (old);
717 return; 830 return 0;
718 } 831 }
719 } 832 }
720 833
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 834 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 835}
723 836
724static void 837static void
838prepare_nop (pTHX_ struct coro_transfer_args *ta)
839{
840 /* kind of mega-hacky, but works */
841 ta->next = ta->prev = (struct coro *)ta;
842}
843
844static int
845slf_check_nop (pTHX_ struct CoroSLF *frame)
846{
847 return 0;
848}
849
850static int
851slf_check_repeat (pTHX_ struct CoroSLF *frame)
852{
853 return 1;
854}
855
856static UNOP coro_setup_op;
857
858static void NOINLINE /* noinline to keep it out of the transfer fast path */
725coro_setup (pTHX_ struct coro *coro) 859coro_setup (pTHX_ struct coro *coro)
726{ 860{
727 /* 861 /*
728 * emulate part of the perl startup here. 862 * emulate part of the perl startup here.
729 */ 863 */
… …
749 GvSV (PL_defgv) = newSV (0); 883 GvSV (PL_defgv) = newSV (0);
750 GvAV (PL_defgv) = coro->args; coro->args = 0; 884 GvAV (PL_defgv) = coro->args; coro->args = 0;
751 GvSV (PL_errgv) = newSV (0); 885 GvSV (PL_errgv) = newSV (0);
752 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 886 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
753 PL_rs = newSVsv (GvSV (irsgv)); 887 PL_rs = newSVsv (GvSV (irsgv));
754 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 888 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
755 889
756 { 890 {
757 dSP; 891 dSP;
758 LOGOP myop; 892 UNOP myop;
759 893
760 Zero (&myop, 1, LOGOP); 894 Zero (&myop, 1, UNOP);
761 myop.op_next = Nullop; 895 myop.op_next = Nullop;
896 myop.op_type = OP_ENTERSUB;
762 myop.op_flags = OPf_WANT_VOID; 897 myop.op_flags = OPf_WANT_VOID;
763 898
764 PUSHMARK (SP); 899 PUSHMARK (SP);
765 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 900 PUSHs ((SV *)coro->startcv);
766 PUTBACK; 901 PUTBACK;
767 PL_op = (OP *)&myop; 902 PL_op = (OP *)&myop;
768 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 903 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
769 SPAGAIN;
770 } 904 }
771 905
772 /* this newly created coroutine might be run on an existing cctx which most 906 /* this newly created coroutine might be run on an existing cctx which most
773 * likely was suspended in set_stacklevel, called from entersub. 907 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
774 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
775 * so we ENTER here for symmetry
776 */ 908 */
777 ENTER; 909 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
778} 910 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
779 911
912 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
913 coro_setup_op.op_next = PL_op;
914 coro_setup_op.op_type = OP_ENTERSUB;
915 coro_setup_op.op_ppaddr = pp_slf;
916 /* no flags etc. required, as an init function won't be called */
917
918 PL_op = (OP *)&coro_setup_op;
919
920 /* copy throw, in case it was set before coro_setup */
921 CORO_THROW = coro->except;
922}
923
780static void 924static void
781coro_destroy (pTHX_ struct coro *coro) 925coro_destruct (pTHX_ struct coro *coro)
782{ 926{
783 if (!IN_DESTRUCT) 927 if (!IN_DESTRUCT)
784 { 928 {
785 /* restore all saved variables and stuff */ 929 /* restore all saved variables and stuff */
786 LEAVE_SCOPE (0); 930 LEAVE_SCOPE (0);
… …
806 950
807 SvREFCNT_dec (PL_diehook); 951 SvREFCNT_dec (PL_diehook);
808 SvREFCNT_dec (PL_warnhook); 952 SvREFCNT_dec (PL_warnhook);
809 953
810 SvREFCNT_dec (coro->saved_deffh); 954 SvREFCNT_dec (coro->saved_deffh);
811 SvREFCNT_dec (coro->throw); 955 SvREFCNT_dec (coro->rouse_cb);
956 SvREFCNT_dec (coro->invoke_cb);
957 SvREFCNT_dec (coro->invoke_av);
812 958
813 coro_destroy_stacks (aTHX); 959 coro_destruct_stacks (aTHX);
814} 960}
815 961
816static void 962INLINE void
817free_coro_mortal (pTHX) 963free_coro_mortal (pTHX)
818{ 964{
819 if (expect_true (coro_mortal)) 965 if (expect_true (coro_mortal))
820 { 966 {
821 SvREFCNT_dec (coro_mortal); 967 SvREFCNT_dec (coro_mortal);
… …
826static int 972static int
827runops_trace (pTHX) 973runops_trace (pTHX)
828{ 974{
829 COP *oldcop = 0; 975 COP *oldcop = 0;
830 int oldcxix = -2; 976 int oldcxix = -2;
831 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
832 coro_cctx *cctx = coro->cctx;
833 977
834 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 978 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
835 { 979 {
836 PERL_ASYNC_CHECK (); 980 PERL_ASYNC_CHECK ();
837 981
838 if (cctx->flags & CC_TRACE_ALL) 982 if (cctx_current->flags & CC_TRACE_ALL)
839 { 983 {
840 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 984 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
841 { 985 {
842 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 986 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
843 SV **bot, **top; 987 SV **bot, **top;
844 AV *av = newAV (); /* return values */ 988 AV *av = newAV (); /* return values */
845 SV **cb; 989 SV **cb;
… …
855 : cx->blk_gimme == G_SCALAR ? bot + 1 999 : cx->blk_gimme == G_SCALAR ? bot + 1
856 : bot; 1000 : bot;
857 1001
858 av_extend (av, top - bot); 1002 av_extend (av, top - bot);
859 while (bot < top) 1003 while (bot < top)
860 av_push (av, SvREFCNT_inc (*bot++)); 1004 av_push (av, SvREFCNT_inc_NN (*bot++));
861 1005
862 PL_runops = RUNOPS_DEFAULT; 1006 PL_runops = RUNOPS_DEFAULT;
863 ENTER; 1007 ENTER;
864 SAVETMPS; 1008 SAVETMPS;
865 EXTEND (SP, 3); 1009 EXTEND (SP, 3);
… …
882 1026
883 if (PL_curcop != &PL_compiling) 1027 if (PL_curcop != &PL_compiling)
884 { 1028 {
885 SV **cb; 1029 SV **cb;
886 1030
887 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1031 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
888 { 1032 {
889 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1033 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
890 1034
891 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1035 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
892 { 1036 {
893 runops_proc_t old_runops = PL_runops;
894 dSP; 1037 dSP;
895 GV *gv = CvGV (cx->blk_sub.cv); 1038 GV *gv = CvGV (cx->blk_sub.cv);
896 SV *fullname = sv_2mortal (newSV (0)); 1039 SV *fullname = sv_2mortal (newSV (0));
897 1040
898 if (isGV (gv)) 1041 if (isGV (gv))
… …
903 SAVETMPS; 1046 SAVETMPS;
904 EXTEND (SP, 3); 1047 EXTEND (SP, 3);
905 PUSHMARK (SP); 1048 PUSHMARK (SP);
906 PUSHs (&PL_sv_yes); 1049 PUSHs (&PL_sv_yes);
907 PUSHs (fullname); 1050 PUSHs (fullname);
908 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1051 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
909 PUTBACK; 1052 PUTBACK;
910 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1053 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
911 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1054 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
912 SPAGAIN; 1055 SPAGAIN;
913 FREETMPS; 1056 FREETMPS;
… …
916 } 1059 }
917 1060
918 oldcxix = cxstack_ix; 1061 oldcxix = cxstack_ix;
919 } 1062 }
920 1063
921 if (cctx->flags & CC_TRACE_LINE) 1064 if (cctx_current->flags & CC_TRACE_LINE)
922 { 1065 {
923 dSP; 1066 dSP;
924 1067
925 PL_runops = RUNOPS_DEFAULT; 1068 PL_runops = RUNOPS_DEFAULT;
926 ENTER; 1069 ENTER;
… …
945 1088
946 TAINT_NOT; 1089 TAINT_NOT;
947 return 0; 1090 return 0;
948} 1091}
949 1092
950/* inject a fake call to Coro::State::_cctx_init into the execution */ 1093static struct CoroSLF cctx_ssl_frame;
951/* _cctx_init should be careful, as it could be called at almost any time */ 1094
952/* during execution of a perl program */ 1095static void
1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1097{
1098 ta->prev = 0;
1099}
1100
1101static int
1102slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1103{
1104 *frame = cctx_ssl_frame;
1105
1106 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1107}
1108
1109/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
953static void NOINLINE 1110static void NOINLINE
954cctx_prepare (pTHX_ coro_cctx *cctx) 1111cctx_prepare (pTHX)
955{ 1112{
956 dSP;
957 LOGOP myop;
958
959 PL_top_env = &PL_start_env; 1113 PL_top_env = &PL_start_env;
960 1114
961 if (cctx->flags & CC_TRACE) 1115 if (cctx_current->flags & CC_TRACE)
962 PL_runops = runops_trace; 1116 PL_runops = runops_trace;
963 1117
964 Zero (&myop, 1, LOGOP); 1118 /* we already must be executing an SLF op, there is no other valid way
965 myop.op_next = PL_op; 1119 * that can lead to creation of a new cctx */
966 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1120 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1121 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
967 1122
968 PUSHMARK (SP); 1123 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
969 EXTEND (SP, 2); 1124 cctx_ssl_frame = slf_frame;
970 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1125
971 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1126 slf_frame.prepare = slf_prepare_set_stacklevel;
972 PUTBACK; 1127 slf_frame.check = slf_check_set_stacklevel;
973 PL_op = (OP *)&myop; 1128}
974 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1129
975 SPAGAIN; 1130/* the tail of transfer: execute stuff we can only do after a transfer */
1131INLINE void
1132transfer_tail (pTHX)
1133{
1134 free_coro_mortal (aTHX);
976} 1135}
977 1136
978/* 1137/*
979 * this is a _very_ stripped down perl interpreter ;) 1138 * this is a _very_ stripped down perl interpreter ;)
980 */ 1139 */
981static void 1140static void
982cctx_run (void *arg) 1141cctx_run (void *arg)
983{ 1142{
1143#ifdef USE_ITHREADS
1144# if CORO_PTHREAD
1145 PERL_SET_CONTEXT (coro_thx);
1146# endif
1147#endif
1148 {
984 dTHX; 1149 dTHX;
985 1150
986 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1151 /* normally we would need to skip the entersub here */
987 UNLOCK; 1152 /* not doing so will re-execute it, which is exactly what we want */
988
989 /* we now skip the entersub that lead to transfer() */
990 PL_op = PL_op->op_next; 1153 /* PL_nop = PL_nop->op_next */
991 1154
992 /* inject a fake subroutine call to cctx_init */ 1155 /* inject a fake subroutine call to cctx_init */
993 cctx_prepare (aTHX_ (coro_cctx *)arg); 1156 cctx_prepare (aTHX);
994 1157
1158 /* cctx_run is the alternative tail of transfer() */
1159 transfer_tail (aTHX);
1160
995 /* somebody or something will hit me for both perl_run and PL_restartop */ 1161 /* somebody or something will hit me for both perl_run and PL_restartop */
996 PL_restartop = PL_op; 1162 PL_restartop = PL_op;
997 perl_run (PL_curinterp); 1163 perl_run (PL_curinterp);
998
999 /* 1164 /*
1165 * Unfortunately, there is no way to get at the return values of the
1166 * coro body here, as perl_run destroys these
1167 */
1168
1169 /*
1000 * If perl-run returns we assume exit() was being called or the coro 1170 * If perl-run returns we assume exit() was being called or the coro
1001 * fell off the end, which seems to be the only valid (non-bug) 1171 * fell off the end, which seems to be the only valid (non-bug)
1002 * reason for perl_run to return. We try to exit by jumping to the 1172 * reason for perl_run to return. We try to exit by jumping to the
1003 * bootstrap-time "top" top_env, as we cannot restore the "main" 1173 * bootstrap-time "top" top_env, as we cannot restore the "main"
1004 * coroutine as Coro has no such concept 1174 * coroutine as Coro has no such concept
1005 */ 1175 */
1006 PL_top_env = main_top_env; 1176 PL_top_env = main_top_env;
1007 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1177 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1178 }
1008} 1179}
1009 1180
1010static coro_cctx * 1181static coro_cctx *
1011cctx_new () 1182cctx_new ()
1012{ 1183{
1013 coro_cctx *cctx; 1184 coro_cctx *cctx;
1185
1186 ++cctx_count;
1187 New (0, cctx, 1, coro_cctx);
1188
1189 cctx->gen = cctx_gen;
1190 cctx->flags = 0;
1191 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1192
1193 return cctx;
1194}
1195
1196/* create a new cctx only suitable as source */
1197static coro_cctx *
1198cctx_new_empty ()
1199{
1200 coro_cctx *cctx = cctx_new ();
1201
1202 cctx->sptr = 0;
1203 coro_create (&cctx->cctx, 0, 0, 0, 0);
1204
1205 return cctx;
1206}
1207
1208/* create a new cctx suitable as destination/running a perl interpreter */
1209static coro_cctx *
1210cctx_new_run ()
1211{
1212 coro_cctx *cctx = cctx_new ();
1014 void *stack_start; 1213 void *stack_start;
1015 size_t stack_size; 1214 size_t stack_size;
1016 1215
1017 ++cctx_count;
1018
1019 Newz (0, cctx, 1, coro_cctx);
1020
1021#if HAVE_MMAP 1216#if HAVE_MMAP
1022 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1217 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1023 /* mmap supposedly does allocate-on-write for us */ 1218 /* mmap supposedly does allocate-on-write for us */
1024 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1219 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1025 1220
1026 if (cctx->sptr != (void *)-1) 1221 if (cctx->sptr != (void *)-1)
1027 { 1222 {
1028# if CORO_STACKGUARD 1223 #if CORO_STACKGUARD
1029 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1224 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1030# endif 1225 #endif
1031 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1226 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1032 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1227 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1033 cctx->flags |= CC_MAPPED; 1228 cctx->flags |= CC_MAPPED;
1034 } 1229 }
1035 else 1230 else
1036#endif 1231#endif
1037 { 1232 {
1038 cctx->ssize = coro_stacksize * (long)sizeof (long); 1233 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1039 New (0, cctx->sptr, coro_stacksize, long); 1234 New (0, cctx->sptr, cctx_stacksize, long);
1040 1235
1041 if (!cctx->sptr) 1236 if (!cctx->sptr)
1042 { 1237 {
1043 perror ("FATAL: unable to allocate stack for coroutine"); 1238 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1044 _exit (EXIT_FAILURE); 1239 _exit (EXIT_FAILURE);
1045 } 1240 }
1046 1241
1047 stack_start = cctx->sptr; 1242 stack_start = cctx->sptr;
1048 stack_size = cctx->ssize; 1243 stack_size = cctx->ssize;
1049 } 1244 }
1050 1245
1051 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1246 #if CORO_USE_VALGRIND
1247 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1248 #endif
1249
1052 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1250 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1053 1251
1054 return cctx; 1252 return cctx;
1055} 1253}
1056 1254
… …
1058cctx_destroy (coro_cctx *cctx) 1256cctx_destroy (coro_cctx *cctx)
1059{ 1257{
1060 if (!cctx) 1258 if (!cctx)
1061 return; 1259 return;
1062 1260
1261 assert (cctx != cctx_current);//D temporary
1262
1063 --cctx_count; 1263 --cctx_count;
1264 coro_destroy (&cctx->cctx);
1064 1265
1266 /* coro_transfer creates new, empty cctx's */
1267 if (cctx->sptr)
1268 {
1065#if CORO_USE_VALGRIND 1269 #if CORO_USE_VALGRIND
1066 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1270 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1067#endif 1271 #endif
1068 1272
1069#if HAVE_MMAP 1273#if HAVE_MMAP
1070 if (cctx->flags & CC_MAPPED) 1274 if (cctx->flags & CC_MAPPED)
1071 munmap (cctx->sptr, cctx->ssize); 1275 munmap (cctx->sptr, cctx->ssize);
1072 else 1276 else
1073#endif 1277#endif
1074 Safefree (cctx->sptr); 1278 Safefree (cctx->sptr);
1279 }
1075 1280
1076 Safefree (cctx); 1281 Safefree (cctx);
1077} 1282}
1078 1283
1079/* wether this cctx should be destructed */ 1284/* wether this cctx should be destructed */
1080#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1285#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1081 1286
1082static coro_cctx * 1287static coro_cctx *
1083cctx_get (pTHX) 1288cctx_get (pTHX)
1084{ 1289{
1085 while (expect_true (cctx_first)) 1290 while (expect_true (cctx_first))
… …
1092 return cctx; 1297 return cctx;
1093 1298
1094 cctx_destroy (cctx); 1299 cctx_destroy (cctx);
1095 } 1300 }
1096 1301
1097 return cctx_new (); 1302 return cctx_new_run ();
1098} 1303}
1099 1304
1100static void 1305static void
1101cctx_put (coro_cctx *cctx) 1306cctx_put (coro_cctx *cctx)
1102{ 1307{
1308 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1309
1103 /* free another cctx if overlimit */ 1310 /* free another cctx if overlimit */
1104 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1311 if (expect_false (cctx_idle >= cctx_max_idle))
1105 { 1312 {
1106 coro_cctx *first = cctx_first; 1313 coro_cctx *first = cctx_first;
1107 cctx_first = first->next; 1314 cctx_first = first->next;
1108 --cctx_idle; 1315 --cctx_idle;
1109 1316
… …
1118/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1119 1326
1120static void 1327static void
1121transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1122{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1123 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1124 { 1333 {
1125 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1126 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1335 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1127 1336
1128 if (expect_false (next->flags & CF_RUNNING)) 1337 if (expect_false (next->flags & CF_RUNNING))
1129 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1130 1339
1131 if (expect_false (next->flags & CF_DESTROYED)) 1340 if (expect_false (next->flags & CF_DESTROYED))
1132 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1133 1342
1134#if !PERL_VERSION_ATLEAST (5,10,0) 1343#if !PERL_VERSION_ATLEAST (5,10,0)
1135 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1344 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1137#endif 1346#endif
1138 } 1347 }
1139} 1348}
1140 1349
1141/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1142static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1143transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1144{ 1353{
1145 dSTACKLEVEL; 1354 dSTACKLEVEL;
1146 static volatile int has_throw;
1147 1355
1148 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1149 if (expect_false (!next)) 1357 if (expect_false (!prev))
1150 { 1358 {
1151 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1359 cctx_current->idle_sp = STACKLEVEL;
1152 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1360 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1153 } 1361 }
1154 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1155 { 1363 {
1156 coro_cctx *prev__cctx; 1364 coro_cctx *cctx_prev;
1157 1365
1158 if (expect_false (prev->flags & CF_NEW)) 1366 if (expect_false (prev->flags & CF_NEW))
1159 { 1367 {
1160 /* create a new empty context */ 1368 /* create a new empty/source context */
1161 Newz (0, prev->cctx, 1, coro_cctx);
1162 prev->flags &= ~CF_NEW; 1369 prev->flags &= ~CF_NEW;
1163 prev->flags |= CF_RUNNING; 1370 prev->flags |= CF_RUNNING;
1164 } 1371 }
1165 1372
1166 prev->flags &= ~CF_RUNNING; 1373 prev->flags &= ~CF_RUNNING;
1167 next->flags |= CF_RUNNING; 1374 next->flags |= CF_RUNNING;
1168
1169 LOCK;
1170 1375
1171 /* first get rid of the old state */ 1376 /* first get rid of the old state */
1172 save_perl (aTHX_ prev); 1377 save_perl (aTHX_ prev);
1173 1378
1174 if (expect_false (next->flags & CF_NEW)) 1379 if (expect_false (next->flags & CF_NEW))
… …
1179 coro_setup (aTHX_ next); 1384 coro_setup (aTHX_ next);
1180 } 1385 }
1181 else 1386 else
1182 load_perl (aTHX_ next); 1387 load_perl (aTHX_ next);
1183 1388
1184 prev__cctx = prev->cctx; 1389 assert (!prev->cctx);//D temporary
1185 1390
1186 /* possibly "free" the cctx */ 1391 /* possibly untie and reuse the cctx */
1187 if (expect_true ( 1392 if (expect_true (
1188 prev__cctx->idle_sp == STACKLEVEL 1393 cctx_current->idle_sp == STACKLEVEL
1189 && !(prev__cctx->flags & CC_TRACE) 1394 && !(cctx_current->flags & CC_TRACE)
1190 && !force_cctx 1395 && !force_cctx
1191 )) 1396 ))
1192 { 1397 {
1193 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1398 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1194 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1399 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1195 1400
1196 prev->cctx = 0;
1197
1198 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1401 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1199 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1402 /* without this the next cctx_get might destroy the running cctx while still in use */
1200 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1403 if (expect_false (CCTX_EXPIRED (cctx_current)))
1201 if (!next->cctx) 1404 if (expect_true (!next->cctx))
1202 next->cctx = cctx_get (aTHX); 1405 next->cctx = cctx_get (aTHX);
1203 1406
1204 cctx_put (prev__cctx); 1407 cctx_put (cctx_current);
1205 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
1206 1411
1207 ++next->usecount; 1412 ++next->usecount;
1208 1413
1209 if (expect_true (!next->cctx)) 1414 cctx_prev = cctx_current;
1210 next->cctx = cctx_get (aTHX); 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1211 1416
1212 has_throw = !!next->throw; 1417 next->cctx = 0;
1213 1418
1214 if (expect_false (prev__cctx != next->cctx)) 1419 if (expect_false (cctx_prev != cctx_current))
1215 { 1420 {
1216 prev__cctx->top_env = PL_top_env; 1421 cctx_prev->top_env = PL_top_env;
1217 PL_top_env = next->cctx->top_env; 1422 PL_top_env = cctx_current->top_env;
1218 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1219 } 1424 }
1220 1425
1221 free_coro_mortal (aTHX); 1426 transfer_tail (aTHX);
1222 UNLOCK;
1223
1224 if (expect_false (has_throw))
1225 {
1226 struct coro *coro = SvSTATE (coro_current);
1227
1228 if (coro->throw)
1229 {
1230 SV *exception = coro->throw;
1231 coro->throw = 0;
1232 sv_setsv (ERRSV, exception);
1233 croak (0);
1234 }
1235 }
1236 } 1427 }
1237} 1428}
1238
1239struct transfer_args
1240{
1241 struct coro *prev, *next;
1242};
1243 1429
1244#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1430#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1245#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1431#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1246 1432
1247/** high level stuff ********************************************************/ 1433/** high level stuff ********************************************************/
… …
1249static int 1435static int
1250coro_state_destroy (pTHX_ struct coro *coro) 1436coro_state_destroy (pTHX_ struct coro *coro)
1251{ 1437{
1252 if (coro->flags & CF_DESTROYED) 1438 if (coro->flags & CF_DESTROYED)
1253 return 0; 1439 return 0;
1440
1441 if (coro->on_destroy)
1442 coro->on_destroy (aTHX_ coro);
1254 1443
1255 coro->flags |= CF_DESTROYED; 1444 coro->flags |= CF_DESTROYED;
1256 1445
1257 if (coro->flags & CF_READY) 1446 if (coro->flags & CF_READY)
1258 { 1447 {
1259 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1448 /* reduce nready, as destroying a ready coro effectively unreadies it */
1260 /* alternative: look through all ready queues and remove the coro */ 1449 /* alternative: look through all ready queues and remove the coro */
1261 LOCK;
1262 --coro_nready; 1450 --coro_nready;
1263 UNLOCK;
1264 } 1451 }
1265 else 1452 else
1266 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1453 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1267 1454
1268 if (coro->mainstack && coro->mainstack != main_mainstack) 1455 if (coro->mainstack && coro->mainstack != main_mainstack)
1269 { 1456 {
1270 struct coro temp; 1457 struct coro temp;
1271 1458
1272 if (coro->flags & CF_RUNNING) 1459 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1273 croak ("FATAL: tried to destroy currently running coroutine");
1274 1460
1275 save_perl (aTHX_ &temp); 1461 save_perl (aTHX_ &temp);
1276 load_perl (aTHX_ coro); 1462 load_perl (aTHX_ coro);
1277 1463
1278 coro_destroy (aTHX_ coro); 1464 coro_destruct (aTHX_ coro);
1279 1465
1280 load_perl (aTHX_ &temp); 1466 load_perl (aTHX_ &temp);
1281 1467
1282 coro->slot = 0; 1468 coro->slot = 0;
1283 } 1469 }
1284 1470
1285 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
1286 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1287 1475
1288 if (coro->next) coro->next->prev = coro->prev; 1476 if (coro->next) coro->next->prev = coro->prev;
1289 if (coro->prev) coro->prev->next = coro->next; 1477 if (coro->prev) coro->prev->next = coro->next;
1290 if (coro == coro_first) coro_first = coro->next; 1478 if (coro == coro_first) coro_first = coro->next;
1291 1479
… …
1329# define MGf_DUP 0 1517# define MGf_DUP 0
1330#endif 1518#endif
1331}; 1519};
1332 1520
1333static void 1521static void
1334prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1522prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1335{ 1523{
1336 ta->prev = SvSTATE (prev_sv); 1524 ta->prev = SvSTATE (prev_sv);
1337 ta->next = SvSTATE (next_sv); 1525 ta->next = SvSTATE (next_sv);
1338 TRANSFER_CHECK (*ta); 1526 TRANSFER_CHECK (*ta);
1339} 1527}
1340 1528
1341static void 1529static void
1342api_transfer (SV *prev_sv, SV *next_sv) 1530api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1343{ 1531{
1344 dTHX;
1345 struct transfer_args ta; 1532 struct coro_transfer_args ta;
1346 1533
1347 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1348 TRANSFER (ta, 1); 1535 TRANSFER (ta, 1);
1349} 1536}
1350 1537
1538/*****************************************************************************/
1539/* gensub: simple closure generation utility */
1540
1541#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1542
1543/* create a closure from XS, returns a code reference */
1544/* the arg can be accessed via GENSUB_ARG from the callback */
1545/* the callback must use dXSARGS/XSRETURN */
1546static SV *
1547gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1548{
1549 CV *cv = (CV *)newSV (0);
1550
1551 sv_upgrade ((SV *)cv, SVt_PVCV);
1552
1553 CvANON_on (cv);
1554 CvISXSUB_on (cv);
1555 CvXSUB (cv) = xsub;
1556 GENSUB_ARG = arg;
1557
1558 return newRV_noinc ((SV *)cv);
1559}
1560
1351/** Coro ********************************************************************/ 1561/** Coro ********************************************************************/
1352 1562
1353static void 1563INLINE void
1354coro_enq (pTHX_ SV *coro_sv) 1564coro_enq (pTHX_ struct coro *coro)
1355{ 1565{
1356 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1566 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1357} 1567}
1358 1568
1359static SV * 1569INLINE SV *
1360coro_deq (pTHX) 1570coro_deq (pTHX)
1361{ 1571{
1362 int prio; 1572 int prio;
1363 1573
1364 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1574 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1367 1577
1368 return 0; 1578 return 0;
1369} 1579}
1370 1580
1371static int 1581static int
1372api_ready (SV *coro_sv) 1582api_ready (pTHX_ SV *coro_sv)
1373{ 1583{
1374 dTHX;
1375 struct coro *coro; 1584 struct coro *coro;
1376 1585 SV *sv_hook;
1377 if (SvROK (coro_sv)) 1586 void (*xs_hook)(void);
1378 coro_sv = SvRV (coro_sv);
1379 1587
1380 coro = SvSTATE (coro_sv); 1588 coro = SvSTATE (coro_sv);
1381 1589
1382 if (coro->flags & CF_READY) 1590 if (coro->flags & CF_READY)
1383 return 0; 1591 return 0;
1384 1592
1385 coro->flags |= CF_READY; 1593 coro->flags |= CF_READY;
1386 1594
1387 LOCK; 1595 sv_hook = coro_nready ? 0 : coro_readyhook;
1388 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1596 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1597
1598 coro_enq (aTHX_ coro);
1389 ++coro_nready; 1599 ++coro_nready;
1390 UNLOCK; 1600
1601 if (sv_hook)
1602 {
1603 dSP;
1604
1605 ENTER;
1606 SAVETMPS;
1607
1608 PUSHMARK (SP);
1609 PUTBACK;
1610 call_sv (sv_hook, G_VOID | G_DISCARD);
1611
1612 FREETMPS;
1613 LEAVE;
1614 }
1615
1616 if (xs_hook)
1617 xs_hook ();
1391 1618
1392 return 1; 1619 return 1;
1393} 1620}
1394 1621
1395static int 1622static int
1396api_is_ready (SV *coro_sv) 1623api_is_ready (pTHX_ SV *coro_sv)
1397{ 1624{
1398 dTHX;
1399 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1625 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1400} 1626}
1401 1627
1402static void 1628/* expects to own a reference to next->hv */
1629INLINE void
1403prepare_schedule (pTHX_ struct transfer_args *ta) 1630prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1404{ 1631{
1405 SV *prev_sv, *next_sv;
1406
1407 for (;;)
1408 {
1409 LOCK;
1410 next_sv = coro_deq (aTHX);
1411
1412 /* nothing to schedule: call the idle handler */
1413 if (expect_false (!next_sv))
1414 {
1415 dSP;
1416 UNLOCK;
1417
1418 ENTER;
1419 SAVETMPS;
1420
1421 PUSHMARK (SP);
1422 PUTBACK;
1423 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1424 SPAGAIN;
1425
1426 FREETMPS;
1427 LEAVE;
1428 continue;
1429 }
1430
1431 ta->next = SvSTATE (next_sv);
1432
1433 /* cannot transfer to destroyed coros, skip and look for next */
1434 if (expect_false (ta->next->flags & CF_DESTROYED))
1435 {
1436 UNLOCK;
1437 SvREFCNT_dec (next_sv);
1438 /* coro_nready is already taken care of by destroy */
1439 continue;
1440 }
1441
1442 --coro_nready;
1443 UNLOCK;
1444 break;
1445 }
1446
1447 /* free this only after the transfer */
1448 prev_sv = SvRV (coro_current); 1632 SV *prev_sv = SvRV (coro_current);
1633
1449 ta->prev = SvSTATE (prev_sv); 1634 ta->prev = SvSTATE_hv (prev_sv);
1635 ta->next = next;
1636
1450 TRANSFER_CHECK (*ta); 1637 TRANSFER_CHECK (*ta);
1451 assert (ta->next->flags & CF_READY); 1638
1452 ta->next->flags &= ~CF_READY;
1453 SvRV_set (coro_current, next_sv); 1639 SvRV_set (coro_current, (SV *)next->hv);
1454 1640
1455 LOCK;
1456 free_coro_mortal (aTHX); 1641 free_coro_mortal (aTHX);
1457 coro_mortal = prev_sv; 1642 coro_mortal = prev_sv;
1458 UNLOCK;
1459} 1643}
1460 1644
1461static void 1645static void
1646prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1647{
1648 for (;;)
1649 {
1650 SV *next_sv = coro_deq (aTHX);
1651
1652 if (expect_true (next_sv))
1653 {
1654 struct coro *next = SvSTATE_hv (next_sv);
1655
1656 /* cannot transfer to destroyed coros, skip and look for next */
1657 if (expect_false (next->flags & CF_DESTROYED))
1658 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1659 else
1660 {
1661 next->flags &= ~CF_READY;
1662 --coro_nready;
1663
1664 prepare_schedule_to (aTHX_ ta, next);
1665 break;
1666 }
1667 }
1668 else
1669 {
1670 /* nothing to schedule: call the idle handler */
1671 if (SvROK (sv_idle)
1672 && SvOBJECT (SvRV (sv_idle)))
1673 {
1674 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1675 api_ready (SvRV (sv_idle));
1676 --coro_nready;
1677 }
1678 else
1679 {
1680 dSP;
1681
1682 ENTER;
1683 SAVETMPS;
1684
1685 PUSHMARK (SP);
1686 PUTBACK;
1687 call_sv (sv_idle, G_VOID | G_DISCARD);
1688
1689 FREETMPS;
1690 LEAVE;
1691 }
1692 }
1693 }
1694}
1695
1696INLINE void
1462prepare_cede (pTHX_ struct transfer_args *ta) 1697prepare_cede (pTHX_ struct coro_transfer_args *ta)
1463{ 1698{
1464 api_ready (coro_current); 1699 api_ready (aTHX_ coro_current);
1465 prepare_schedule (aTHX_ ta); 1700 prepare_schedule (aTHX_ ta);
1466} 1701}
1467 1702
1703INLINE void
1704prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1705{
1706 SV *prev = SvRV (coro_current);
1707
1708 if (coro_nready)
1709 {
1710 prepare_schedule (aTHX_ ta);
1711 api_ready (aTHX_ prev);
1712 }
1713 else
1714 prepare_nop (aTHX_ ta);
1715}
1716
1717static void
1718api_schedule (pTHX)
1719{
1720 struct coro_transfer_args ta;
1721
1722 prepare_schedule (aTHX_ &ta);
1723 TRANSFER (ta, 1);
1724}
1725
1726static void
1727api_schedule_to (pTHX_ SV *coro_sv)
1728{
1729 struct coro_transfer_args ta;
1730 struct coro *next = SvSTATE (coro_sv);
1731
1732 SvREFCNT_inc_NN (coro_sv);
1733 prepare_schedule_to (aTHX_ &ta, next);
1734}
1735
1468static int 1736static int
1469prepare_cede_notself (pTHX_ struct transfer_args *ta) 1737api_cede (pTHX)
1470{ 1738{
1471 if (coro_nready) 1739 struct coro_transfer_args ta;
1472 { 1740
1473 SV *prev = SvRV (coro_current);
1474 prepare_schedule (aTHX_ ta); 1741 prepare_cede (aTHX_ &ta);
1475 api_ready (prev); 1742
1743 if (expect_true (ta.prev != ta.next))
1744 {
1745 TRANSFER (ta, 1);
1476 return 1; 1746 return 1;
1477 } 1747 }
1478 else 1748 else
1479 return 0; 1749 return 0;
1480} 1750}
1481 1751
1482static void
1483api_schedule (void)
1484{
1485 dTHX;
1486 struct transfer_args ta;
1487
1488 prepare_schedule (aTHX_ &ta);
1489 TRANSFER (ta, 1);
1490}
1491
1492static int 1752static int
1493api_cede (void) 1753api_cede_notself (pTHX)
1494{ 1754{
1495 dTHX; 1755 if (coro_nready)
1756 {
1496 struct transfer_args ta; 1757 struct coro_transfer_args ta;
1497 1758
1498 prepare_cede (aTHX_ &ta); 1759 prepare_cede_notself (aTHX_ &ta);
1499
1500 if (expect_true (ta.prev != ta.next))
1501 {
1502 TRANSFER (ta, 1); 1760 TRANSFER (ta, 1);
1503 return 1; 1761 return 1;
1504 } 1762 }
1505 else 1763 else
1506 return 0; 1764 return 0;
1507} 1765}
1508 1766
1509static int 1767static void
1510api_cede_notself (void)
1511{
1512 dTHX;
1513 struct transfer_args ta;
1514
1515 if (prepare_cede_notself (aTHX_ &ta))
1516 {
1517 TRANSFER (ta, 1);
1518 return 1;
1519 }
1520 else
1521 return 0;
1522}
1523
1524static void
1525api_trace (SV *coro_sv, int flags) 1768api_trace (pTHX_ SV *coro_sv, int flags)
1526{ 1769{
1527 dTHX;
1528 struct coro *coro = SvSTATE (coro_sv); 1770 struct coro *coro = SvSTATE (coro_sv);
1529 1771
1772 if (coro->flags & CF_RUNNING)
1773 croak ("cannot enable tracing on a running coroutine, caught");
1774
1530 if (flags & CC_TRACE) 1775 if (flags & CC_TRACE)
1531 { 1776 {
1532 if (!coro->cctx) 1777 if (!coro->cctx)
1533 coro->cctx = cctx_new (); 1778 coro->cctx = cctx_new_run ();
1534 else if (!(coro->cctx->flags & CC_TRACE)) 1779 else if (!(coro->cctx->flags & CC_TRACE))
1535 croak ("cannot enable tracing on coroutine with custom stack"); 1780 croak ("cannot enable tracing on coroutine with custom stack, caught");
1536 1781
1537 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1782 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1538 } 1783 }
1539 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1784 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1540 { 1785 {
… …
1545 else 1790 else
1546 coro->slot->runops = RUNOPS_DEFAULT; 1791 coro->slot->runops = RUNOPS_DEFAULT;
1547 } 1792 }
1548} 1793}
1549 1794
1795static void
1796coro_call_on_destroy (pTHX_ struct coro *coro)
1797{
1798 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1799 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1800
1801 if (on_destroyp)
1802 {
1803 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1804
1805 while (AvFILLp (on_destroy) >= 0)
1806 {
1807 dSP; /* don't disturb outer sp */
1808 SV *cb = av_pop (on_destroy);
1809
1810 PUSHMARK (SP);
1811
1812 if (statusp)
1813 {
1814 int i;
1815 AV *status = (AV *)SvRV (*statusp);
1816 EXTEND (SP, AvFILLp (status) + 1);
1817
1818 for (i = 0; i <= AvFILLp (status); ++i)
1819 PUSHs (AvARRAY (status)[i]);
1820 }
1821
1822 PUTBACK;
1823 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1824 }
1825 }
1826}
1827
1828static void
1829slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1830{
1831 int i;
1832 HV *hv = (HV *)SvRV (coro_current);
1833 AV *av = newAV ();
1834
1835 av_extend (av, items - 1);
1836 for (i = 0; i < items; ++i)
1837 av_push (av, SvREFCNT_inc_NN (arg [i]));
1838
1839 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1840
1841 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1842 api_ready (aTHX_ sv_manager);
1843
1844 frame->prepare = prepare_schedule;
1845 frame->check = slf_check_repeat;
1846}
1847
1848/*****************************************************************************/
1849/* async pool handler */
1850
1851static int
1852slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1853{
1854 HV *hv = (HV *)SvRV (coro_current);
1855 struct coro *coro = (struct coro *)frame->data;
1856
1857 if (!coro->invoke_cb)
1858 return 1; /* loop till we have invoke */
1859 else
1860 {
1861 hv_store (hv, "desc", sizeof ("desc") - 1,
1862 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1863
1864 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1865
1866 {
1867 dSP;
1868 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1869 PUTBACK;
1870 }
1871
1872 SvREFCNT_dec (GvAV (PL_defgv));
1873 GvAV (PL_defgv) = coro->invoke_av;
1874 coro->invoke_av = 0;
1875
1876 return 0;
1877 }
1878}
1879
1880static void
1881slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1882{
1883 HV *hv = (HV *)SvRV (coro_current);
1884 struct coro *coro = SvSTATE_hv ((SV *)hv);
1885
1886 if (expect_true (coro->saved_deffh))
1887 {
1888 /* subsequent iteration */
1889 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1890 coro->saved_deffh = 0;
1891
1892 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1893 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1894 {
1895 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1896 coro->invoke_av = newAV ();
1897
1898 frame->prepare = prepare_nop;
1899 }
1900 else
1901 {
1902 av_clear (GvAV (PL_defgv));
1903 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1904
1905 coro->prio = 0;
1906
1907 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1908 api_trace (aTHX_ coro_current, 0);
1909
1910 frame->prepare = prepare_schedule;
1911 av_push (av_async_pool, SvREFCNT_inc (hv));
1912 }
1913 }
1914 else
1915 {
1916 /* first iteration, simply fall through */
1917 frame->prepare = prepare_nop;
1918 }
1919
1920 frame->check = slf_check_pool_handler;
1921 frame->data = (void *)coro;
1922}
1923
1924/*****************************************************************************/
1925/* rouse callback */
1926
1927#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1928
1929static void
1930coro_rouse_callback (pTHX_ CV *cv)
1931{
1932 dXSARGS;
1933 SV *data = (SV *)GENSUB_ARG;
1934
1935 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1936 {
1937 /* first call, set args */
1938 AV *av = newAV ();
1939 SV *coro = SvRV (data);
1940
1941 SvRV_set (data, (SV *)av);
1942 api_ready (aTHX_ coro);
1943 SvREFCNT_dec (coro);
1944
1945 /* better take a full copy of the arguments */
1946 while (items--)
1947 av_store (av, items, newSVsv (ST (items)));
1948 }
1949
1950 XSRETURN_EMPTY;
1951}
1952
1953static int
1954slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1955{
1956 SV *data = (SV *)frame->data;
1957
1958 if (CORO_THROW)
1959 return 0;
1960
1961 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1962 return 1;
1963
1964 /* now push all results on the stack */
1965 {
1966 dSP;
1967 AV *av = (AV *)SvRV (data);
1968 int i;
1969
1970 EXTEND (SP, AvFILLp (av) + 1);
1971 for (i = 0; i <= AvFILLp (av); ++i)
1972 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1973
1974 /* we have stolen the elements, so ste length to zero and free */
1975 AvFILLp (av) = -1;
1976 av_undef (av);
1977
1978 PUTBACK;
1979 }
1980
1981 return 0;
1982}
1983
1984static void
1985slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1986{
1987 SV *cb;
1988
1989 if (items)
1990 cb = arg [0];
1991 else
1992 {
1993 struct coro *coro = SvSTATE_current;
1994
1995 if (!coro->rouse_cb)
1996 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1997
1998 cb = sv_2mortal (coro->rouse_cb);
1999 coro->rouse_cb = 0;
2000 }
2001
2002 if (!SvROK (cb)
2003 || SvTYPE (SvRV (cb)) != SVt_PVCV
2004 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2005 croak ("Coro::rouse_wait called with illegal callback argument,");
2006
2007 {
2008 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2009 SV *data = (SV *)GENSUB_ARG;
2010
2011 frame->data = (void *)data;
2012 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2013 frame->check = slf_check_rouse_wait;
2014 }
2015}
2016
2017static SV *
2018coro_new_rouse_cb (pTHX)
2019{
2020 HV *hv = (HV *)SvRV (coro_current);
2021 struct coro *coro = SvSTATE_hv (hv);
2022 SV *data = newRV_inc ((SV *)hv);
2023 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2024
2025 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2026 SvREFCNT_dec (data); /* magicext increases the refcount */
2027
2028 SvREFCNT_dec (coro->rouse_cb);
2029 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2030
2031 return cb;
2032}
2033
2034/*****************************************************************************/
2035/* schedule-like-function opcode (SLF) */
2036
2037static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2038static const CV *slf_cv;
2039static SV **slf_argv;
2040static int slf_argc, slf_arga; /* count, allocated */
2041static I32 slf_ax; /* top of stack, for restore */
2042
2043/* this restores the stack in the case we patched the entersub, to */
2044/* recreate the stack frame as perl will on following calls */
2045/* since entersub cleared the stack */
2046static OP *
2047pp_restore (pTHX)
2048{
2049 int i;
2050 SV **SP = PL_stack_base + slf_ax;
2051
2052 PUSHMARK (SP);
2053
2054 EXTEND (SP, slf_argc + 1);
2055
2056 for (i = 0; i < slf_argc; ++i)
2057 PUSHs (sv_2mortal (slf_argv [i]));
2058
2059 PUSHs ((SV *)CvGV (slf_cv));
2060
2061 RETURNOP (slf_restore.op_first);
2062}
2063
2064static void
2065slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2066{
2067 SV **arg = (SV **)slf_frame.data;
2068
2069 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2070}
2071
2072static void
2073slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 if (items != 2)
2076 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2077
2078 frame->prepare = slf_prepare_transfer;
2079 frame->check = slf_check_nop;
2080 frame->data = (void *)arg; /* let's hope it will stay valid */
2081}
2082
2083static void
2084slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 frame->prepare = prepare_schedule;
2087 frame->check = slf_check_nop;
2088}
2089
2090static void
2091slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2092{
2093 struct coro *next = (struct coro *)slf_frame.data;
2094
2095 SvREFCNT_inc_NN (next->hv);
2096 prepare_schedule_to (aTHX_ ta, next);
2097}
2098
2099static void
2100slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 if (!items)
2103 croak ("Coro::schedule_to expects a coroutine argument, caught");
2104
2105 frame->data = (void *)SvSTATE (arg [0]);
2106 frame->prepare = slf_prepare_schedule_to;
2107 frame->check = slf_check_nop;
2108}
2109
2110static void
2111slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 api_ready (aTHX_ SvRV (coro_current));
2114
2115 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2116}
2117
2118static void
2119slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2120{
2121 frame->prepare = prepare_cede;
2122 frame->check = slf_check_nop;
2123}
2124
2125static void
2126slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2127{
2128 frame->prepare = prepare_cede_notself;
2129 frame->check = slf_check_nop;
2130}
2131
2132/*
2133 * these not obviously related functions are all rolled into one
2134 * function to increase chances that they all will call transfer with the same
2135 * stack offset
2136 * SLF stands for "schedule-like-function".
2137 */
2138static OP *
2139pp_slf (pTHX)
2140{
2141 I32 checkmark; /* mark SP to see how many elements check has pushed */
2142
2143 /* set up the slf frame, unless it has already been set-up */
2144 /* the latter happens when a new coro has been started */
2145 /* or when a new cctx was attached to an existing coroutine */
2146 if (expect_true (!slf_frame.prepare))
2147 {
2148 /* first iteration */
2149 dSP;
2150 SV **arg = PL_stack_base + TOPMARK + 1;
2151 int items = SP - arg; /* args without function object */
2152 SV *gv = *sp;
2153
2154 /* do a quick consistency check on the "function" object, and if it isn't */
2155 /* for us, divert to the real entersub */
2156 if (SvTYPE (gv) != SVt_PVGV
2157 || !GvCV (gv)
2158 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2159 return PL_ppaddr[OP_ENTERSUB](aTHX);
2160
2161 if (!(PL_op->op_flags & OPf_STACKED))
2162 {
2163 /* ampersand-form of call, use @_ instead of stack */
2164 AV *av = GvAV (PL_defgv);
2165 arg = AvARRAY (av);
2166 items = AvFILLp (av) + 1;
2167 }
2168
2169 /* now call the init function, which needs to set up slf_frame */
2170 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2171 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2172
2173 /* pop args */
2174 SP = PL_stack_base + POPMARK;
2175
2176 PUTBACK;
2177 }
2178
2179 /* now that we have a slf_frame, interpret it! */
2180 /* we use a callback system not to make the code needlessly */
2181 /* complicated, but so we can run multiple perl coros from one cctx */
2182
2183 do
2184 {
2185 struct coro_transfer_args ta;
2186
2187 slf_frame.prepare (aTHX_ &ta);
2188 TRANSFER (ta, 0);
2189
2190 checkmark = PL_stack_sp - PL_stack_base;
2191 }
2192 while (slf_frame.check (aTHX_ &slf_frame));
2193
2194 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2195
2196 /* exception handling */
2197 if (expect_false (CORO_THROW))
2198 {
2199 SV *exception = sv_2mortal (CORO_THROW);
2200
2201 CORO_THROW = 0;
2202 sv_setsv (ERRSV, exception);
2203 croak (0);
2204 }
2205
2206 /* return value handling - mostly like entersub */
2207 /* make sure we put something on the stack in scalar context */
2208 if (GIMME_V == G_SCALAR)
2209 {
2210 dSP;
2211 SV **bot = PL_stack_base + checkmark;
2212
2213 if (sp == bot) /* too few, push undef */
2214 bot [1] = &PL_sv_undef;
2215 else if (sp != bot + 1) /* too many, take last one */
2216 bot [1] = *sp;
2217
2218 SP = bot + 1;
2219
2220 PUTBACK;
2221 }
2222
2223 return NORMAL;
2224}
2225
2226static void
2227api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2228{
2229 int i;
2230 SV **arg = PL_stack_base + ax;
2231 int items = PL_stack_sp - arg + 1;
2232
2233 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2234
2235 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2236 && PL_op->op_ppaddr != pp_slf)
2237 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2238
2239 CvFLAGS (cv) |= CVf_SLF;
2240 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2241 slf_cv = cv;
2242
2243 /* we patch the op, and then re-run the whole call */
2244 /* we have to put the same argument on the stack for this to work */
2245 /* and this will be done by pp_restore */
2246 slf_restore.op_next = (OP *)&slf_restore;
2247 slf_restore.op_type = OP_CUSTOM;
2248 slf_restore.op_ppaddr = pp_restore;
2249 slf_restore.op_first = PL_op;
2250
2251 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2252
2253 if (PL_op->op_flags & OPf_STACKED)
2254 {
2255 if (items > slf_arga)
2256 {
2257 slf_arga = items;
2258 free (slf_argv);
2259 slf_argv = malloc (slf_arga * sizeof (SV *));
2260 }
2261
2262 slf_argc = items;
2263
2264 for (i = 0; i < items; ++i)
2265 slf_argv [i] = SvREFCNT_inc (arg [i]);
2266 }
2267 else
2268 slf_argc = 0;
2269
2270 PL_op->op_ppaddr = pp_slf;
2271 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2272
2273 PL_op = (OP *)&slf_restore;
2274}
2275
2276/*****************************************************************************/
2277/* PerlIO::cede */
2278
2279typedef struct
2280{
2281 PerlIOBuf base;
2282 NV next, every;
2283} PerlIOCede;
2284
2285static IV
2286PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2287{
2288 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2289
2290 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2291 self->next = nvtime () + self->every;
2292
2293 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2294}
2295
2296static SV *
2297PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300
2301 return newSVnv (self->every);
2302}
2303
2304static IV
2305PerlIOCede_flush (pTHX_ PerlIO *f)
2306{
2307 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2308 double now = nvtime ();
2309
2310 if (now >= self->next)
2311 {
2312 api_cede (aTHX);
2313 self->next = now + self->every;
2314 }
2315
2316 return PerlIOBuf_flush (aTHX_ f);
2317}
2318
2319static PerlIO_funcs PerlIO_cede =
2320{
2321 sizeof(PerlIO_funcs),
2322 "cede",
2323 sizeof(PerlIOCede),
2324 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2325 PerlIOCede_pushed,
2326 PerlIOBuf_popped,
2327 PerlIOBuf_open,
2328 PerlIOBase_binmode,
2329 PerlIOCede_getarg,
2330 PerlIOBase_fileno,
2331 PerlIOBuf_dup,
2332 PerlIOBuf_read,
2333 PerlIOBuf_unread,
2334 PerlIOBuf_write,
2335 PerlIOBuf_seek,
2336 PerlIOBuf_tell,
2337 PerlIOBuf_close,
2338 PerlIOCede_flush,
2339 PerlIOBuf_fill,
2340 PerlIOBase_eof,
2341 PerlIOBase_error,
2342 PerlIOBase_clearerr,
2343 PerlIOBase_setlinebuf,
2344 PerlIOBuf_get_base,
2345 PerlIOBuf_bufsiz,
2346 PerlIOBuf_get_ptr,
2347 PerlIOBuf_get_cnt,
2348 PerlIOBuf_set_ptrcnt,
2349};
2350
2351/*****************************************************************************/
2352/* Coro::Semaphore & Coro::Signal */
2353
2354static SV *
2355coro_waitarray_new (pTHX_ int count)
2356{
2357 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2358 AV *av = newAV ();
2359 SV **ary;
2360
2361 /* unfortunately, building manually saves memory */
2362 Newx (ary, 2, SV *);
2363 AvALLOC (av) = ary;
2364 /*AvARRAY (av) = ary;*/
2365 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2366 AvMAX (av) = 1;
2367 AvFILLp (av) = 0;
2368 ary [0] = newSViv (count);
2369
2370 return newRV_noinc ((SV *)av);
2371}
2372
2373/* semaphore */
2374
2375static void
2376coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2377{
2378 SV *count_sv = AvARRAY (av)[0];
2379 IV count = SvIVX (count_sv);
2380
2381 count += adjust;
2382 SvIVX (count_sv) = count;
2383
2384 /* now wake up as many waiters as are expected to lock */
2385 while (count > 0 && AvFILLp (av) > 0)
2386 {
2387 SV *cb;
2388
2389 /* swap first two elements so we can shift a waiter */
2390 AvARRAY (av)[0] = AvARRAY (av)[1];
2391 AvARRAY (av)[1] = count_sv;
2392 cb = av_shift (av);
2393
2394 if (SvOBJECT (cb))
2395 {
2396 api_ready (aTHX_ cb);
2397 --count;
2398 }
2399 else if (SvTYPE (cb) == SVt_PVCV)
2400 {
2401 dSP;
2402 PUSHMARK (SP);
2403 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2404 PUTBACK;
2405 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2406 }
2407
2408 SvREFCNT_dec (cb);
2409 }
2410}
2411
2412static void
2413coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2414{
2415 /* call $sem->adjust (0) to possibly wake up some other waiters */
2416 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2417}
2418
2419static int
2420slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2421{
2422 AV *av = (AV *)frame->data;
2423 SV *count_sv = AvARRAY (av)[0];
2424
2425 /* if we are about to throw, don't actually acquire the lock, just throw */
2426 if (CORO_THROW)
2427 return 0;
2428 else if (SvIVX (count_sv) > 0)
2429 {
2430 SvSTATE_current->on_destroy = 0;
2431
2432 if (acquire)
2433 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2434 else
2435 coro_semaphore_adjust (aTHX_ av, 0);
2436
2437 return 0;
2438 }
2439 else
2440 {
2441 int i;
2442 /* if we were woken up but can't down, we look through the whole */
2443 /* waiters list and only add us if we aren't in there already */
2444 /* this avoids some degenerate memory usage cases */
2445
2446 for (i = 1; i <= AvFILLp (av); ++i)
2447 if (AvARRAY (av)[i] == SvRV (coro_current))
2448 return 1;
2449
2450 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2451 return 1;
2452 }
2453}
2454
2455static int
2456slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2457{
2458 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2459}
2460
2461static int
2462slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2463{
2464 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2465}
2466
2467static void
2468slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2469{
2470 AV *av = (AV *)SvRV (arg [0]);
2471
2472 if (SvIVX (AvARRAY (av)[0]) > 0)
2473 {
2474 frame->data = (void *)av;
2475 frame->prepare = prepare_nop;
2476 }
2477 else
2478 {
2479 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2480
2481 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2482 frame->prepare = prepare_schedule;
2483
2484 /* to avoid race conditions when a woken-up coro gets terminated */
2485 /* we arrange for a temporary on_destroy that calls adjust (0) */
2486 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2487 }
2488}
2489
2490static void
2491slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2492{
2493 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2494 frame->check = slf_check_semaphore_down;
2495}
2496
2497static void
2498slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2499{
2500 if (items >= 2)
2501 {
2502 /* callback form */
2503 AV *av = (AV *)SvRV (arg [0]);
2504 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2505
2506 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2507
2508 if (SvIVX (AvARRAY (av)[0]) > 0)
2509 coro_semaphore_adjust (aTHX_ av, 0);
2510
2511 frame->prepare = prepare_nop;
2512 frame->check = slf_check_nop;
2513 }
2514 else
2515 {
2516 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2517 frame->check = slf_check_semaphore_wait;
2518 }
2519}
2520
2521/* signal */
2522
2523static void
2524coro_signal_wake (pTHX_ AV *av, int count)
2525{
2526 SvIVX (AvARRAY (av)[0]) = 0;
2527
2528 /* now signal count waiters */
2529 while (count > 0 && AvFILLp (av) > 0)
2530 {
2531 SV *cb;
2532
2533 /* swap first two elements so we can shift a waiter */
2534 cb = AvARRAY (av)[0];
2535 AvARRAY (av)[0] = AvARRAY (av)[1];
2536 AvARRAY (av)[1] = cb;
2537
2538 cb = av_shift (av);
2539
2540 api_ready (aTHX_ cb);
2541 sv_setiv (cb, 0); /* signal waiter */
2542 SvREFCNT_dec (cb);
2543
2544 --count;
2545 }
2546}
2547
2548static int
2549slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2550{
2551 /* if we are about to throw, also stop waiting */
2552 return SvROK ((SV *)frame->data) && !CORO_THROW;
2553}
2554
2555static void
2556slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2557{
2558 AV *av = (AV *)SvRV (arg [0]);
2559
2560 if (SvIVX (AvARRAY (av)[0]))
2561 {
2562 SvIVX (AvARRAY (av)[0]) = 0;
2563 frame->prepare = prepare_nop;
2564 frame->check = slf_check_nop;
2565 }
2566 else
2567 {
2568 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2569
2570 av_push (av, waiter);
2571
2572 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2573 frame->prepare = prepare_schedule;
2574 frame->check = slf_check_signal_wait;
2575 }
2576}
2577
2578/*****************************************************************************/
2579/* Coro::AIO */
2580
2581#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2582
2583/* helper storage struct */
2584struct io_state
2585{
2586 int errorno;
2587 I32 laststype; /* U16 in 5.10.0 */
2588 int laststatval;
2589 Stat_t statcache;
2590};
2591
2592static void
2593coro_aio_callback (pTHX_ CV *cv)
2594{
2595 dXSARGS;
2596 AV *state = (AV *)GENSUB_ARG;
2597 SV *coro = av_pop (state);
2598 SV *data_sv = newSV (sizeof (struct io_state));
2599
2600 av_extend (state, items - 1);
2601
2602 sv_upgrade (data_sv, SVt_PV);
2603 SvCUR_set (data_sv, sizeof (struct io_state));
2604 SvPOK_only (data_sv);
2605
2606 {
2607 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2608
2609 data->errorno = errno;
2610 data->laststype = PL_laststype;
2611 data->laststatval = PL_laststatval;
2612 data->statcache = PL_statcache;
2613 }
2614
2615 /* now build the result vector out of all the parameters and the data_sv */
2616 {
2617 int i;
2618
2619 for (i = 0; i < items; ++i)
2620 av_push (state, SvREFCNT_inc_NN (ST (i)));
2621 }
2622
2623 av_push (state, data_sv);
2624
2625 api_ready (aTHX_ coro);
2626 SvREFCNT_dec (coro);
2627 SvREFCNT_dec ((AV *)state);
2628}
2629
2630static int
2631slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2632{
2633 AV *state = (AV *)frame->data;
2634
2635 /* if we are about to throw, return early */
2636 /* this does not cancel the aio request, but at least */
2637 /* it quickly returns */
2638 if (CORO_THROW)
2639 return 0;
2640
2641 /* one element that is an RV? repeat! */
2642 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2643 return 1;
2644
2645 /* restore status */
2646 {
2647 SV *data_sv = av_pop (state);
2648 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2649
2650 errno = data->errorno;
2651 PL_laststype = data->laststype;
2652 PL_laststatval = data->laststatval;
2653 PL_statcache = data->statcache;
2654
2655 SvREFCNT_dec (data_sv);
2656 }
2657
2658 /* push result values */
2659 {
2660 dSP;
2661 int i;
2662
2663 EXTEND (SP, AvFILLp (state) + 1);
2664 for (i = 0; i <= AvFILLp (state); ++i)
2665 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2666
2667 PUTBACK;
2668 }
2669
2670 return 0;
2671}
2672
2673static void
2674slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2675{
2676 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2677 SV *coro_hv = SvRV (coro_current);
2678 struct coro *coro = SvSTATE_hv (coro_hv);
2679
2680 /* put our coroutine id on the state arg */
2681 av_push (state, SvREFCNT_inc_NN (coro_hv));
2682
2683 /* first see whether we have a non-zero priority and set it as AIO prio */
2684 if (coro->prio)
2685 {
2686 dSP;
2687
2688 static SV *prio_cv;
2689 static SV *prio_sv;
2690
2691 if (expect_false (!prio_cv))
2692 {
2693 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2694 prio_sv = newSViv (0);
2695 }
2696
2697 PUSHMARK (SP);
2698 sv_setiv (prio_sv, coro->prio);
2699 XPUSHs (prio_sv);
2700
2701 PUTBACK;
2702 call_sv (prio_cv, G_VOID | G_DISCARD);
2703 }
2704
2705 /* now call the original request */
2706 {
2707 dSP;
2708 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2709 int i;
2710
2711 PUSHMARK (SP);
2712
2713 /* first push all args to the stack */
2714 EXTEND (SP, items + 1);
2715
2716 for (i = 0; i < items; ++i)
2717 PUSHs (arg [i]);
2718
2719 /* now push the callback closure */
2720 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2721
2722 /* now call the AIO function - we assume our request is uncancelable */
2723 PUTBACK;
2724 call_sv ((SV *)req, G_VOID | G_DISCARD);
2725 }
2726
2727 /* now that the requets is going, we loop toll we have a result */
2728 frame->data = (void *)state;
2729 frame->prepare = prepare_schedule;
2730 frame->check = slf_check_aio_req;
2731}
2732
2733static void
2734coro_aio_req_xs (pTHX_ CV *cv)
2735{
2736 dXSARGS;
2737
2738 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2739
2740 XSRETURN_EMPTY;
2741}
2742
2743/*****************************************************************************/
2744
2745#if CORO_CLONE
2746# include "clone.c"
2747#endif
2748
1550MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1551 2750
1552PROTOTYPES: DISABLE 2751PROTOTYPES: DISABLE
1553 2752
1554BOOT: 2753BOOT:
1555{ 2754{
1556#ifdef USE_ITHREADS 2755#ifdef USE_ITHREADS
1557 MUTEX_INIT (&coro_mutex); 2756# if CORO_PTHREAD
2757 coro_thx = PERL_GET_CONTEXT;
2758# endif
1558#endif 2759#endif
1559 BOOT_PAGESIZE; 2760 BOOT_PAGESIZE;
2761
2762 cctx_current = cctx_new_empty ();
1560 2763
1561 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2764 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1562 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2765 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1563 2766
1564 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2767 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1565 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2768 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1566 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2769 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1567 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1568 2770
1569 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2771 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1570 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2772 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1571 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2773 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1572 2774
… …
1581 main_top_env = PL_top_env; 2783 main_top_env = PL_top_env;
1582 2784
1583 while (main_top_env->je_prev) 2785 while (main_top_env->je_prev)
1584 main_top_env = main_top_env->je_prev; 2786 main_top_env = main_top_env->je_prev;
1585 2787
2788 {
2789 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2790
2791 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2792 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2793
2794 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2795 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2796 }
2797
1586 coroapi.ver = CORO_API_VERSION; 2798 coroapi.ver = CORO_API_VERSION;
1587 coroapi.rev = CORO_API_REVISION; 2799 coroapi.rev = CORO_API_REVISION;
2800
1588 coroapi.transfer = api_transfer; 2801 coroapi.transfer = api_transfer;
2802
2803 coroapi.sv_state = SvSTATE_;
2804 coroapi.execute_slf = api_execute_slf;
2805 coroapi.prepare_nop = prepare_nop;
2806 coroapi.prepare_schedule = prepare_schedule;
2807 coroapi.prepare_cede = prepare_cede;
2808 coroapi.prepare_cede_notself = prepare_cede_notself;
2809
2810 {
2811 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2812
2813 if (!svp) croak ("Time::HiRes is required");
2814 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2815
2816 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2817 }
1589 2818
1590 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2819 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1591} 2820}
1592 2821
1593SV * 2822SV *
1594new (char *klass, ...) 2823new (char *klass, ...)
2824 ALIAS:
2825 Coro::new = 1
1595 CODE: 2826 CODE:
1596{ 2827{
1597 struct coro *coro; 2828 struct coro *coro;
1598 MAGIC *mg; 2829 MAGIC *mg;
1599 HV *hv; 2830 HV *hv;
2831 CV *cb;
1600 int i; 2832 int i;
2833
2834 if (items > 1)
2835 {
2836 cb = coro_sv_2cv (aTHX_ ST (1));
2837
2838 if (!ix)
2839 {
2840 if (CvISXSUB (cb))
2841 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2842
2843 if (!CvROOT (cb))
2844 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2845 }
2846 }
1601 2847
1602 Newz (0, coro, 1, struct coro); 2848 Newz (0, coro, 1, struct coro);
1603 coro->args = newAV (); 2849 coro->args = newAV ();
1604 coro->flags = CF_NEW; 2850 coro->flags = CF_NEW;
1605 2851
… …
1610 coro->hv = hv = newHV (); 2856 coro->hv = hv = newHV ();
1611 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2857 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1612 mg->mg_flags |= MGf_DUP; 2858 mg->mg_flags |= MGf_DUP;
1613 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2859 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1614 2860
2861 if (items > 1)
2862 {
1615 av_extend (coro->args, items - 1); 2863 av_extend (coro->args, items - 1 + ix - 1);
2864
2865 if (ix)
2866 {
2867 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2868 cb = cv_coro_run;
2869 }
2870
2871 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2872
1616 for (i = 1; i < items; i++) 2873 for (i = 2; i < items; i++)
1617 av_push (coro->args, newSVsv (ST (i))); 2874 av_push (coro->args, newSVsv (ST (i)));
2875 }
1618} 2876}
1619 OUTPUT: 2877 OUTPUT:
1620 RETVAL 2878 RETVAL
1621 2879
1622# these not obviously related functions are all rolled into the same xs
1623# function to increase chances that they all will call transfer with the same
1624# stack offset
1625void 2880void
1626_set_stacklevel (...) 2881transfer (...)
1627 ALIAS: 2882 PROTOTYPE: $$
1628 Coro::State::transfer = 1 2883 CODE:
1629 Coro::schedule = 2 2884 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1630 Coro::cede = 3
1631 Coro::cede_notself = 4
1632 CODE:
1633{
1634 struct transfer_args ta;
1635
1636 PUTBACK;
1637 switch (ix)
1638 {
1639 case 0:
1640 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1641 ta.next = 0;
1642 break;
1643
1644 case 1:
1645 if (items != 2)
1646 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1647
1648 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1649 break;
1650
1651 case 2:
1652 prepare_schedule (aTHX_ &ta);
1653 break;
1654
1655 case 3:
1656 prepare_cede (aTHX_ &ta);
1657 break;
1658
1659 case 4:
1660 if (!prepare_cede_notself (aTHX_ &ta))
1661 XSRETURN_EMPTY;
1662
1663 break;
1664 }
1665 SPAGAIN;
1666
1667 BARRIER;
1668 PUTBACK;
1669 TRANSFER (ta, 0);
1670 SPAGAIN; /* might be the sp of a different coroutine now */
1671 /* be extra careful not to ever do anything after TRANSFER */
1672}
1673 2885
1674bool 2886bool
1675_destroy (SV *coro_sv) 2887_destroy (SV *coro_sv)
1676 CODE: 2888 CODE:
1677 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2889 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1678 OUTPUT: 2890 OUTPUT:
1679 RETVAL 2891 RETVAL
1680 2892
1681void 2893void
1682_exit (code) 2894_exit (int code)
1683 int code
1684 PROTOTYPE: $ 2895 PROTOTYPE: $
1685 CODE: 2896 CODE:
1686 _exit (code); 2897 _exit (code);
1687 2898
2899SV *
2900clone (Coro::State coro)
2901 CODE:
2902{
2903#if CORO_CLONE
2904 struct coro *ncoro = coro_clone (coro);
2905 MAGIC *mg;
2906 /* TODO: too much duplication */
2907 ncoro->hv = newHV ();
2908 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2909 mg->mg_flags |= MGf_DUP;
2910 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2911#else
2912 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2913#endif
2914}
2915 OUTPUT:
2916 RETVAL
2917
1688int 2918int
1689cctx_stacksize (int new_stacksize = 0) 2919cctx_stacksize (int new_stacksize = 0)
2920 PROTOTYPE: ;$
1690 CODE: 2921 CODE:
1691 RETVAL = coro_stacksize; 2922 RETVAL = cctx_stacksize;
1692 if (new_stacksize) 2923 if (new_stacksize)
2924 {
1693 coro_stacksize = new_stacksize; 2925 cctx_stacksize = new_stacksize;
2926 ++cctx_gen;
2927 }
1694 OUTPUT: 2928 OUTPUT:
1695 RETVAL 2929 RETVAL
1696 2930
1697int 2931int
2932cctx_max_idle (int max_idle = 0)
2933 PROTOTYPE: ;$
2934 CODE:
2935 RETVAL = cctx_max_idle;
2936 if (max_idle > 1)
2937 cctx_max_idle = max_idle;
2938 OUTPUT:
2939 RETVAL
2940
2941int
1698cctx_count () 2942cctx_count ()
2943 PROTOTYPE:
1699 CODE: 2944 CODE:
1700 RETVAL = cctx_count; 2945 RETVAL = cctx_count;
1701 OUTPUT: 2946 OUTPUT:
1702 RETVAL 2947 RETVAL
1703 2948
1704int 2949int
1705cctx_idle () 2950cctx_idle ()
2951 PROTOTYPE:
1706 CODE: 2952 CODE:
1707 RETVAL = cctx_idle; 2953 RETVAL = cctx_idle;
1708 OUTPUT: 2954 OUTPUT:
1709 RETVAL 2955 RETVAL
1710 2956
1711void 2957void
1712list () 2958list ()
2959 PROTOTYPE:
1713 PPCODE: 2960 PPCODE:
1714{ 2961{
1715 struct coro *coro; 2962 struct coro *coro;
1716 for (coro = coro_first; coro; coro = coro->next) 2963 for (coro = coro_first; coro; coro = coro->next)
1717 if (coro->hv) 2964 if (coro->hv)
… …
1722call (Coro::State coro, SV *coderef) 2969call (Coro::State coro, SV *coderef)
1723 ALIAS: 2970 ALIAS:
1724 eval = 1 2971 eval = 1
1725 CODE: 2972 CODE:
1726{ 2973{
1727 if (coro->mainstack) 2974 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1728 { 2975 {
1729 struct coro temp; 2976 struct coro temp;
1730 2977
1731 if (!(coro->flags & CF_RUNNING)) 2978 if (!(coro->flags & CF_RUNNING))
1732 { 2979 {
… …
1776 RETVAL = boolSV (coro->flags & ix); 3023 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT: 3024 OUTPUT:
1778 RETVAL 3025 RETVAL
1779 3026
1780void 3027void
3028throw (Coro::State self, SV *throw = &PL_sv_undef)
3029 PROTOTYPE: $;$
3030 CODE:
3031{
3032 struct coro *current = SvSTATE_current;
3033 SV **throwp = self == current ? &CORO_THROW : &self->except;
3034 SvREFCNT_dec (*throwp);
3035 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3036}
3037
3038void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3039api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3040 PROTOTYPE: $;$
3041 C_ARGS: aTHX_ coro, flags
1782 3042
1783SV * 3043SV *
1784has_stack (Coro::State coro) 3044has_cctx (Coro::State coro)
1785 PROTOTYPE: $ 3045 PROTOTYPE: $
1786 CODE: 3046 CODE:
1787 RETVAL = boolSV (!!coro->cctx); 3047 /* maybe manage the running flag differently */
3048 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1788 OUTPUT: 3049 OUTPUT:
1789 RETVAL 3050 RETVAL
1790 3051
1791int 3052int
1792is_traced (Coro::State coro) 3053is_traced (Coro::State coro)
… …
1794 CODE: 3055 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3056 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT: 3057 OUTPUT:
1797 RETVAL 3058 RETVAL
1798 3059
1799IV 3060UV
1800rss (Coro::State coro) 3061rss (Coro::State coro)
1801 PROTOTYPE: $ 3062 PROTOTYPE: $
1802 ALIAS: 3063 ALIAS:
1803 usecount = 1 3064 usecount = 1
1804 CODE: 3065 CODE:
… …
1810 OUTPUT: 3071 OUTPUT:
1811 RETVAL 3072 RETVAL
1812 3073
1813void 3074void
1814force_cctx () 3075force_cctx ()
3076 PROTOTYPE:
1815 CODE: 3077 CODE:
1816 struct coro *coro = SvSTATE (coro_current);
1817 coro->cctx->idle_sp = 0; 3078 cctx_current->idle_sp = 0;
3079
3080void
3081swap_defsv (Coro::State self)
3082 PROTOTYPE: $
3083 ALIAS:
3084 swap_defav = 1
3085 CODE:
3086 if (!self->slot)
3087 croak ("cannot swap state with coroutine that has no saved state,");
3088 else
3089 {
3090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3092
3093 SV *tmp = *src; *src = *dst; *dst = tmp;
3094 }
3095
1818 3096
1819MODULE = Coro::State PACKAGE = Coro 3097MODULE = Coro::State PACKAGE = Coro
1820 3098
1821BOOT: 3099BOOT:
1822{ 3100{
1823 int i; 3101 int i;
1824 3102
1825 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1826 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3105 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3106 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3107 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1827 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3108 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3109 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3110 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3111 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1828 3112
1829 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3113 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1830 SvREADONLY_on (coro_current); 3114 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3115 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3116 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1831 3117
1832 coro_stash = gv_stashpv ("Coro", TRUE); 3118 coro_stash = gv_stashpv ("Coro", TRUE);
1833 3119
1834 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3120 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1835 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3121 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1840 3126
1841 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3127 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1842 coro_ready[i] = newAV (); 3128 coro_ready[i] = newAV ();
1843 3129
1844 { 3130 {
1845 SV *sv = perl_get_sv ("Coro::API", TRUE); 3131 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1846 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1847 3132
1848 coroapi.schedule = api_schedule; 3133 coroapi.schedule = api_schedule;
3134 coroapi.schedule_to = api_schedule_to;
1849 coroapi.cede = api_cede; 3135 coroapi.cede = api_cede;
1850 coroapi.cede_notself = api_cede_notself; 3136 coroapi.cede_notself = api_cede_notself;
1851 coroapi.ready = api_ready; 3137 coroapi.ready = api_ready;
1852 coroapi.is_ready = api_is_ready; 3138 coroapi.is_ready = api_is_ready;
1853 coroapi.nready = &coro_nready; 3139 coroapi.nready = coro_nready;
1854 coroapi.current = coro_current; 3140 coroapi.current = coro_current;
1855 3141
1856 GCoroAPI = &coroapi; 3142 /*GCoroAPI = &coroapi;*/
1857 sv_setiv (sv, (IV)&coroapi); 3143 sv_setiv (sv, (IV)&coroapi);
1858 SvREADONLY_on (sv); 3144 SvREADONLY_on (sv);
1859 } 3145 }
1860} 3146}
3147
3148void
3149terminate (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3152
3153void
3154schedule (...)
3155 CODE:
3156 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3157
3158void
3159schedule_to (...)
3160 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3162
3163void
3164cede_to (...)
3165 CODE:
3166 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3167
3168void
3169cede (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_cede);
3172
3173void
3174cede_notself (...)
3175 CODE:
3176 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3177
3178void
3179_cancel (Coro::State self)
3180 CODE:
3181 coro_state_destroy (aTHX_ self);
3182 coro_call_on_destroy (aTHX_ self);
1861 3183
1862void 3184void
1863_set_current (SV *current) 3185_set_current (SV *current)
1864 PROTOTYPE: $ 3186 PROTOTYPE: $
1865 CODE: 3187 CODE:
1866 SvREFCNT_dec (SvRV (coro_current)); 3188 SvREFCNT_dec (SvRV (coro_current));
1867 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3189 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3190
3191void
3192_set_readyhook (SV *hook)
3193 PROTOTYPE: $
3194 CODE:
3195 SvREFCNT_dec (coro_readyhook);
3196 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1868 3197
1869int 3198int
1870prio (Coro::State coro, int newprio = 0) 3199prio (Coro::State coro, int newprio = 0)
3200 PROTOTYPE: $;$
1871 ALIAS: 3201 ALIAS:
1872 nice = 1 3202 nice = 1
1873 CODE: 3203 CODE:
1874{ 3204{
1875 RETVAL = coro->prio; 3205 RETVAL = coro->prio;
… …
1890 3220
1891SV * 3221SV *
1892ready (SV *self) 3222ready (SV *self)
1893 PROTOTYPE: $ 3223 PROTOTYPE: $
1894 CODE: 3224 CODE:
1895 RETVAL = boolSV (api_ready (self)); 3225 RETVAL = boolSV (api_ready (aTHX_ self));
1896 OUTPUT: 3226 OUTPUT:
1897 RETVAL 3227 RETVAL
1898 3228
1899int 3229int
1900nready (...) 3230nready (...)
… …
1903 RETVAL = coro_nready; 3233 RETVAL = coro_nready;
1904 OUTPUT: 3234 OUTPUT:
1905 RETVAL 3235 RETVAL
1906 3236
1907void 3237void
1908throw (Coro::State self, SV *throw = &PL_sv_undef) 3238_pool_handler (...)
3239 CODE:
3240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3241
3242void
3243async_pool (SV *cv, ...)
1909 PROTOTYPE: $;$ 3244 PROTOTYPE: &@
3245 PPCODE:
3246{
3247 HV *hv = (HV *)av_pop (av_async_pool);
3248 AV *av = newAV ();
3249 SV *cb = ST (0);
3250 int i;
3251
3252 av_extend (av, items - 2);
3253 for (i = 1; i < items; ++i)
3254 av_push (av, SvREFCNT_inc_NN (ST (i)));
3255
3256 if ((SV *)hv == &PL_sv_undef)
3257 {
3258 PUSHMARK (SP);
3259 EXTEND (SP, 2);
3260 PUSHs (sv_Coro);
3261 PUSHs ((SV *)cv_pool_handler);
3262 PUTBACK;
3263 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3264 SPAGAIN;
3265
3266 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3267 }
3268
3269 {
3270 struct coro *coro = SvSTATE_hv (hv);
3271
3272 assert (!coro->invoke_cb);
3273 assert (!coro->invoke_av);
3274 coro->invoke_cb = SvREFCNT_inc (cb);
3275 coro->invoke_av = av;
3276 }
3277
3278 api_ready (aTHX_ (SV *)hv);
3279
3280 if (GIMME_V != G_VOID)
3281 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3282 else
3283 SvREFCNT_dec (hv);
3284}
3285
3286SV *
3287rouse_cb ()
3288 PROTOTYPE:
3289 CODE:
3290 RETVAL = coro_new_rouse_cb (aTHX);
3291 OUTPUT:
3292 RETVAL
3293
3294void
3295rouse_wait (...)
3296 PROTOTYPE: ;$
3297 PPCODE:
3298 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3299
3300
3301MODULE = Coro::State PACKAGE = PerlIO::cede
3302
3303BOOT:
3304 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3305
3306
3307MODULE = Coro::State PACKAGE = Coro::Semaphore
3308
3309SV *
3310new (SV *klass, SV *count = 0)
3311 CODE:
3312 RETVAL = sv_bless (
3313 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3314 GvSTASH (CvGV (cv))
3315 );
3316 OUTPUT:
3317 RETVAL
3318
3319# helper for Coro::Channel
3320SV *
3321_alloc (int count)
3322 CODE:
3323 RETVAL = coro_waitarray_new (aTHX_ count);
3324 OUTPUT:
3325 RETVAL
3326
3327SV *
3328count (SV *self)
3329 CODE:
3330 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3331 OUTPUT:
3332 RETVAL
3333
3334void
3335up (SV *self, int adjust = 1)
3336 ALIAS:
3337 adjust = 1
1910 CODE: 3338 CODE:
1911 SvREFCNT_dec (self->throw); 3339 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1912 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1913 3340
1914void 3341void
1915swap_defsv (Coro::State self) 3342down (...)
1916 PROTOTYPE: $
1917 ALIAS:
1918 swap_defav = 1
1919 CODE: 3343 CODE:
1920 if (!self->slot) 3344 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
1921 croak ("cannot swap state with coroutine that has no saved state"); 3345
3346void
3347wait (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3350
3351void
3352try (SV *self)
3353 PPCODE:
3354{
3355 AV *av = (AV *)SvRV (self);
3356 SV *count_sv = AvARRAY (av)[0];
3357 IV count = SvIVX (count_sv);
3358
3359 if (count > 0)
3360 {
3361 --count;
3362 SvIVX (count_sv) = count;
3363 XSRETURN_YES;
3364 }
3365 else
3366 XSRETURN_NO;
3367}
3368
3369void
3370waiters (SV *self)
3371 PPCODE:
3372{
3373 AV *av = (AV *)SvRV (self);
3374 int wcount = AvFILLp (av) + 1 - 1;
3375
3376 if (GIMME_V == G_SCALAR)
3377 XPUSHs (sv_2mortal (newSViv (wcount)));
1922 else 3378 else
1923 { 3379 {
1924 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3380 int i;
1925 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3381 EXTEND (SP, wcount);
1926 3382 for (i = 1; i <= wcount; ++i)
1927 SV *tmp = *src; *src = *dst; *dst = tmp; 3383 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
1928 } 3384 }
3385}
1929 3386
1930# for async_pool speedup 3387MODULE = Coro::State PACKAGE = Coro::Signal
3388
3389SV *
3390new (SV *klass)
3391 CODE:
3392 RETVAL = sv_bless (
3393 coro_waitarray_new (aTHX_ 0),
3394 GvSTASH (CvGV (cv))
3395 );
3396 OUTPUT:
3397 RETVAL
3398
1931void 3399void
1932_pool_1 (SV *cb) 3400wait (...)
1933 CODE: 3401 CODE:
1934{ 3402 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
1935 struct coro *coro = SvSTATE (coro_current);
1936 HV *hv = (HV *)SvRV (coro_current);
1937 AV *defav = GvAV (PL_defgv);
1938 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1939 AV *invoke_av;
1940 int i, len;
1941
1942 if (!invoke)
1943 {
1944 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1945 croak ("\3async_pool terminate\2\n");
1946 }
1947
1948 SvREFCNT_dec (coro->saved_deffh);
1949 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1950
1951 hv_store (hv, "desc", sizeof ("desc") - 1,
1952 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1953
1954 invoke_av = (AV *)SvRV (invoke);
1955 len = av_len (invoke_av);
1956
1957 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1958
1959 if (len > 0)
1960 {
1961 av_fill (defav, len - 1);
1962 for (i = 0; i < len; ++i)
1963 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1964 }
1965
1966 SvREFCNT_dec (invoke);
1967}
1968 3403
1969void 3404void
1970_pool_2 (SV *cb) 3405broadcast (SV *self)
3406 CODE:
3407{
3408 AV *av = (AV *)SvRV (self);
3409 coro_signal_wake (aTHX_ av, AvFILLp (av));
3410}
3411
3412void
3413send (SV *self)
3414 CODE:
3415{
3416 AV *av = (AV *)SvRV (self);
3417
3418 if (AvFILLp (av))
3419 coro_signal_wake (aTHX_ av, 1);
3420 else
3421 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3422}
3423
3424IV
3425awaited (SV *self)
1971 CODE: 3426 CODE:
1972{ 3427 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
1973 struct coro *coro = SvSTATE (coro_current);
1974
1975 sv_setsv (cb, &PL_sv_undef);
1976
1977 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1978 coro->saved_deffh = 0;
1979
1980 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1981 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1982 {
1983 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1984 croak ("\3async_pool terminate\2\n");
1985 }
1986
1987 av_clear (GvAV (PL_defgv));
1988 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1989 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1990
1991 coro->prio = 0;
1992
1993 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1994 api_trace (coro_current, 0);
1995
1996 av_push (av_async_pool, newSVsv (coro_current));
1997}
1998
1999
2000MODULE = Coro::State PACKAGE = Coro::AIO
2001
2002SV *
2003_get_state ()
2004 CODE:
2005{
2006 struct io_state *data;
2007
2008 RETVAL = newSV (sizeof (struct io_state));
2009 data = (struct io_state *)SvPVX (RETVAL);
2010 SvCUR_set (RETVAL, sizeof (struct io_state));
2011 SvPOK_only (RETVAL);
2012
2013 data->errorno = errno;
2014 data->laststype = PL_laststype;
2015 data->laststatval = PL_laststatval;
2016 data->statcache = PL_statcache;
2017}
2018 OUTPUT: 3428 OUTPUT:
2019 RETVAL 3429 RETVAL
2020 3430
3431
3432MODULE = Coro::State PACKAGE = Coro::AnyEvent
3433
3434BOOT:
3435 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3436
2021void 3437void
2022_set_state (char *data_) 3438_schedule (...)
2023 PROTOTYPE: $
2024 CODE: 3439 CODE:
2025{ 3440{
2026 struct io_state *data = (void *)data_; 3441 static int incede;
2027 3442
2028 errno = data->errorno; 3443 api_cede_notself (aTHX);
2029 PL_laststype = data->laststype;
2030 PL_laststatval = data->laststatval;
2031 PL_statcache = data->statcache;
2032}
2033 3444
3445 ++incede;
3446 while (coro_nready >= incede && api_cede (aTHX))
3447 ;
3448
3449 sv_setsv (sv_activity, &PL_sv_undef);
3450 if (coro_nready >= incede)
3451 {
3452 PUSHMARK (SP);
3453 PUTBACK;
3454 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3455 }
3456
3457 --incede;
3458}
3459
3460
3461MODULE = Coro::State PACKAGE = Coro::AIO
3462
3463void
3464_register (char *target, char *proto, SV *req)
3465 CODE:
3466{
3467 CV *req_cv = coro_sv_2cv (aTHX_ req);
3468 /* newXSproto doesn't return the CV on 5.8 */
3469 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3470 sv_setpv ((SV *)slf_cv, proto);
3471 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3472}
3473

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