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Comparing Coro/Coro/State.xs (file contents):
Revision 1.238 by root, Sat May 31 12:10:55 2008 UTC vs.
Revision 1.329 by root, Tue Nov 25 20:48:41 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63 61
64#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr 63# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
67# endif 65# endif
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS 102#endif
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs 103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
96#endif 108#endif
97 109
98/* 5.8.7 */ 110/* 5.8.7 */
99#ifndef SvRV_set 111#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 126#endif
115 127
116/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
118#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
120 137
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 139
123#if __GNUC__ >= 3 140#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
127#else 144#else
128# define attribute(x) 145# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
131#endif 148#endif
132 149
133#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
135 152
136#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
137 154
138#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
139 157
140#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 159# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 161# endif
162#endif
148 163
149/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 174static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
164 181
165static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 184static SV *rv_diehook;
168static SV *rv_warnhook; 185static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
170 187
171/* async_pool helper stuff */ 188/* async_pool helper stuff */
172static SV *sv_pool_rss; 189static SV *sv_pool_rss;
173static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
174static 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;
175 196
176/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
177static SV *sv_activity; 198static SV *sv_activity;
178 199
179static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 210};
190 211
191/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 213typedef struct coro_cctx
214{
193 struct coro_cctx *next; 215 struct coro_cctx *next;
194 216
195 /* the stack */ 217 /* the stack */
196 void *sptr; 218 void *sptr;
197 size_t ssize; 219 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 224 JMPENV *top_env;
203 coro_context cctx; 225 coro_context cctx;
204 226
227 U32 gen;
205#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
206 int valgrind_id; 229 int valgrind_id;
207#endif 230#endif
208 unsigned char flags; 231 unsigned char flags;
209} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
210 237
211enum { 238enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 243};
217 244
218/* 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 */
219typedef struct { 246typedef struct
247{
220 SV *defsv; 248 SV *defsv;
221 AV *defav; 249 AV *defav;
222 SV *errsv; 250 SV *errsv;
223 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
224#define VAR(name,type) type name; 253#define VAR(name,type) type name;
225# include "state.h" 254# include "state.h"
226#undef VAR 255#undef VAR
227} perl_slots; 256} perl_slots;
228 257
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 259
231/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
232struct coro { 261struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 263 coro_cctx *cctx;
235 264
236 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 267 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
239 269
270 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
244 276
245 /* statistics */ 277 /* statistics */
246 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
247 279
248 /* coro process data */ 280 /* coro process data */
249 int prio; 281 int prio;
250 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
251 284
252 /* async_pool */ 285 /* async_pool */
253 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
254 289
255 /* linked list */ 290 /* linked list */
256 struct coro *next, *prev; 291 struct coro *next, *prev;
257}; 292};
258 293
259typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
261 301
262/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
263 303
264#define PRIO_MAX 3 304#define PRIO_MAX 3
265#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 309#define PRIO_MIN -4
270 310
271/* for Coro.pm */ 311/* for Coro.pm */
272static SV *coro_current; 312static SV *coro_current;
273static SV *coro_readyhook; 313static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
277 318
278/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
279 320
280static SV * 321static SV *
281coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 346 get_hv (name, create);
306#endif 347#endif
307 return get_hv (name, create); 348 return get_hv (name, create);
308} 349}
309 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
310static AV * 360static AV *
311coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
312{ 362{
313 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
315 365
316 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 372#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 374 --AvFILLp (padlist);
325 375
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
328 378
329 return newpadlist; 379 return newpadlist;
330} 380}
331 381
… …
361 411
362 /* casting is fun. */ 412 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 414 free_padlist (aTHX_ padlist);
365 415
416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
417
366 return 0; 418 return 0;
367} 419}
368 420
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
370#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
371 423
372static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 425 0, 0, 0, 0,
374 coro_cv_free 426 coro_cv_free
375}; 427};
376 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
377#define CORO_MAGIC(sv,type) \ 434#define CORO_MAGIC(sv, type) \
378 SvMAGIC (sv) \ 435 (expect_true (SvMAGIC (sv)) \
379 ? SvMAGIC (sv)->mg_type == type \ 436 ? CORO_MAGIC_NN (sv, type) \
380 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \
382 : 0 437 : 0)
383 438
384#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
386 441
387static struct coro * 442INLINE struct coro *
388SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
389{ 444{
390 HV *stash; 445 HV *stash;
391 MAGIC *mg; 446 MAGIC *mg;
392 447
… …
407 mg = CORO_MAGIC_state (coro); 462 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
409} 464}
410 465
411#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
412 471
413/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
414static void 473static void
415get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
416{ 475{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 481 else
423 { 482 {
424#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
430#else 490#else
431 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
432#endif 492#endif
433 } 493 }
434} 494}
435 495
436static void 496static void
… …
458 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
459 c->slot = 0; 519 c->slot = 0;
460 520
461 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
462 522
463 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
464 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
465 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
466 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
467 528
468 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
469 # include "state.h" 530 # include "state.h"
470 #undef VAR 531 #undef VAR
471 532
… …
482 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
483 } 544 }
484 545
485 PUTBACK; 546 PUTBACK;
486 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
487} 551}
488 552
489static void 553static void
490save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
491{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
492 { 559 {
493 dSP; 560 dSP;
494 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
551 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
552 619
553 { 620 {
554 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
555 622
556 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
557 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
558 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
559 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
560 628
561 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
562 # include "state.h" 630 # include "state.h"
563 #undef VAR 631 #undef VAR
564 } 632 }
565} 633}
566 634
567/* 635/*
568 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
572 */ 640 */
573#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
574# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
575#else 643#else
576static void 644static void
577coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
578{ 646{
579 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
616 684
617/* 685/*
618 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
619 */ 687 */
620static void 688static void
621coro_destroy_stacks (pTHX) 689coro_destruct_stacks (pTHX)
622{ 690{
623 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
625 693
626 while (PL_curstackinfo) 694 while (PL_curstackinfo)
… …
642#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
643 Safefree (PL_retstack); 711 Safefree (PL_retstack);
644#endif 712#endif
645} 713}
646 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
647static size_t 724static size_t
648coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
649{ 726{
650 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
651 728
652 if (coro->mainstack) 729 if (coro->mainstack)
653 { 730 {
654 perl_slots tmp_slot;
655 perl_slots *slot;
656
657 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
658 { 732 {
659 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
660 734 CORO_RSS;
661 #define VAR(name,type) slot->name = PL_ ## name;
662 # include "state.h"
663 #undef VAR 735 #undef SYM
664 } 736 }
665 else 737 else
666 slot = coro->slot; 738 {
667 739 #define SYM(sym) coro->slot->sym
668 rss += sizeof (slot->curstackinfo); 740 CORO_RSS;
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 741 #undef SYM
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 742 }
671 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY);
675
676#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *);
678#endif
679 } 743 }
680 744
681 return rss; 745 return rss;
682} 746}
683 747
684/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
685 749
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
688 753
689/* apparently < 5.8.8 */ 754/* apparently < 5.8.8 */
690#undef MgPV_nolen_const
691#ifndef MgPV_nolen_const 755#ifndef MgPV_nolen_const
692#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
693 SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \ 757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
694 (const char*)(mg)->mg_ptr) 758 (const char*)(mg)->mg_ptr)
695#endif 759#endif
696 760
697/* 761/*
698 * This overrides the default magic get method of %SIG elements. 762 * This overrides the default magic get method of %SIG elements.
… …
708{ 772{
709 const char *s = MgPV_nolen_const (mg); 773 const char *s = MgPV_nolen_const (mg);
710 774
711 if (*s == '_') 775 if (*s == '_')
712 { 776 {
713 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 777 SV **svp = 0;
714 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 778
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781
782 if (svp)
783 {
784 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
785 return 0;
786 }
715 } 787 }
716 788
717 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790}
791
792static int
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{
795 const char *s = MgPV_nolen_const (mg);
796
797 if (*s == '_')
798 {
799 SV **svp = 0;
800
801 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
802 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
803
804 if (svp)
805 {
806 SV *old = *svp;
807 *svp = 0;
808 SvREFCNT_dec (old);
809 return 0;
810 }
811 }
812
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
718} 814}
719 815
720static int 816static int
721coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
722{ 818{
… …
740 836
741 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
742} 838}
743 839
744static void 840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
745coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
746{ 863{
747 /* 864 /*
748 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
749 */ 866 */
… …
751 868
752 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
753 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
754 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
755 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
756 PL_curpm = 0; 876 PL_curpm = 0;
757 PL_curpad = 0; 877 PL_curpad = 0;
758 PL_localizing = 0; 878 PL_localizing = 0;
759 PL_dirty = 0; 879 PL_dirty = 0;
760 PL_restartop = 0; 880 PL_restartop = 0;
761#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
762 PL_parser = 0; 882 PL_parser = 0;
763#endif 883#endif
884 PL_hints = 0;
764 885
765 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
766 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
767 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
768 889
769 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
770 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
771 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
772 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
773 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
774 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
775 897
776 { 898 {
777 dSP; 899 dSP;
778 LOGOP myop; 900 UNOP myop;
779 901
780 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
781 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
782 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
783 906
784 PUSHMARK (SP); 907 PUSHMARK (SP);
785 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
786 PUTBACK; 909 PUTBACK;
787 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
788 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
789 SPAGAIN;
790 } 912 }
791 913
792 /* this newly created coroutine might be run on an existing cctx which most 914 /* this newly created coroutine might be run on an existing cctx which most
793 * likely was suspended in set_stacklevel, called from entersub. 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
794 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
795 * so we ENTER here for symmetry
796 */ 916 */
797 ENTER; 917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
798} 918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
799 919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
800static void 932static void
801coro_destroy (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
802{ 934{
803 if (!IN_DESTRUCT) 935 if (!IN_DESTRUCT)
804 { 936 {
805 /* restore all saved variables and stuff */ 937 /* restore all saved variables and stuff */
806 LEAVE_SCOPE (0); 938 LEAVE_SCOPE (0);
… …
821 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
822 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
823 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
824 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
825 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
826 959
827 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
828 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
829 962
830 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
831 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
832 967
833 coro_destroy_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
834} 969}
835 970
836static void 971INLINE void
837free_coro_mortal (pTHX) 972free_coro_mortal (pTHX)
838{ 973{
839 if (expect_true (coro_mortal)) 974 if (expect_true (coro_mortal))
840 { 975 {
841 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
… …
846static int 981static int
847runops_trace (pTHX) 982runops_trace (pTHX)
848{ 983{
849 COP *oldcop = 0; 984 COP *oldcop = 0;
850 int oldcxix = -2; 985 int oldcxix = -2;
851 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
852 coro_cctx *cctx = coro->cctx;
853 986
854 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
855 { 988 {
856 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
857 990
858 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
859 { 992 {
860 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
861 { 994 {
862 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
863 SV **bot, **top; 996 SV **bot, **top;
864 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
865 SV **cb; 998 SV **cb;
… …
875 : cx->blk_gimme == G_SCALAR ? bot + 1 1008 : cx->blk_gimme == G_SCALAR ? bot + 1
876 : bot; 1009 : bot;
877 1010
878 av_extend (av, top - bot); 1011 av_extend (av, top - bot);
879 while (bot < top) 1012 while (bot < top)
880 av_push (av, SvREFCNT_inc (*bot++)); 1013 av_push (av, SvREFCNT_inc_NN (*bot++));
881 1014
882 PL_runops = RUNOPS_DEFAULT; 1015 PL_runops = RUNOPS_DEFAULT;
883 ENTER; 1016 ENTER;
884 SAVETMPS; 1017 SAVETMPS;
885 EXTEND (SP, 3); 1018 EXTEND (SP, 3);
… …
902 1035
903 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
904 { 1037 {
905 SV **cb; 1038 SV **cb;
906 1039
907 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
908 { 1041 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 1043
911 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
912 { 1045 {
913 runops_proc_t old_runops = PL_runops;
914 dSP; 1046 dSP;
915 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
916 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
917 1049
918 if (isGV (gv)) 1050 if (isGV (gv))
… …
923 SAVETMPS; 1055 SAVETMPS;
924 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
925 PUSHMARK (SP); 1057 PUSHMARK (SP);
926 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
927 PUSHs (fullname); 1059 PUSHs (fullname);
928 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
929 PUTBACK; 1061 PUTBACK;
930 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
931 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
932 SPAGAIN; 1064 SPAGAIN;
933 FREETMPS; 1065 FREETMPS;
… …
936 } 1068 }
937 1069
938 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
939 } 1071 }
940 1072
941 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
942 { 1074 {
943 dSP; 1075 dSP;
944 1076
945 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
946 ENTER; 1078 ENTER;
… …
965 1097
966 TAINT_NOT; 1098 TAINT_NOT;
967 return 0; 1099 return 0;
968} 1100}
969 1101
970/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static struct CoroSLF cctx_ssl_frame;
971/* _cctx_init should be careful, as it could be called at almost any time */ 1103
972/* during execution of a perl program */ 1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
973static void NOINLINE 1119static void NOINLINE
974cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
975{ 1121{
976 dSP;
977 LOGOP myop;
978
979 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
980 1123
981 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
982 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
983 1126
984 Zero (&myop, 1, LOGOP); 1127 /* we already must be executing an SLF op, there is no other valid way
985 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
986 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
987 1131
988 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
989 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
990 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1134
991 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
992 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
993 PL_op = (OP *)&myop; 1137}
994 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138
995 SPAGAIN; 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
996} 1144}
997 1145
998/* 1146/*
999 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1000 */ 1148 */
1001static void 1149static void
1002cctx_run (void *arg) 1150cctx_run (void *arg)
1003{ 1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
1004 dTHX; 1158 dTHX;
1005 1159
1006 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1160 /* normally we would need to skip the entersub here */
1007 UNLOCK; 1161 /* not doing so will re-execute it, which is exactly what we want */
1008
1009 /* we now skip the entersub that lead to transfer() */
1010 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
1011 1163
1012 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1013 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1014 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
1015 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
1016 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1017 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1018
1019 /* 1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1177
1178 /*
1020 * If perl-run returns we assume exit() was being called or the coro 1179 * If perl-run returns we assume exit() was being called or the coro
1021 * fell off the end, which seems to be the only valid (non-bug) 1180 * fell off the end, which seems to be the only valid (non-bug)
1022 * reason for perl_run to return. We try to exit by jumping to the 1181 * reason for perl_run to return. We try to exit by jumping to the
1023 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1024 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
1025 */ 1186 */
1026 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
1027 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1189 }
1028} 1190}
1029 1191
1030static coro_cctx * 1192static coro_cctx *
1031cctx_new () 1193cctx_new ()
1032{ 1194{
1033 coro_cctx *cctx; 1195 coro_cctx *cctx;
1196
1197 ++cctx_count;
1198 New (0, cctx, 1, coro_cctx);
1199
1200 cctx->gen = cctx_gen;
1201 cctx->flags = 0;
1202 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx only suitable as source */
1208static coro_cctx *
1209cctx_new_empty ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1212
1213 cctx->sptr = 0;
1214 coro_create (&cctx->cctx, 0, 0, 0, 0);
1215
1216 return cctx;
1217}
1218
1219/* create a new cctx suitable as destination/running a perl interpreter */
1220static coro_cctx *
1221cctx_new_run ()
1222{
1223 coro_cctx *cctx = cctx_new ();
1034 void *stack_start; 1224 void *stack_start;
1035 size_t stack_size; 1225 size_t stack_size;
1036 1226
1037 ++cctx_count;
1038
1039 Newz (0, cctx, 1, coro_cctx);
1040
1041#if HAVE_MMAP 1227#if HAVE_MMAP
1042 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1228 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1043 /* mmap supposedly does allocate-on-write for us */ 1229 /* mmap supposedly does allocate-on-write for us */
1044 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1230 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1045 1231
1046 if (cctx->sptr != (void *)-1) 1232 if (cctx->sptr != (void *)-1)
1047 { 1233 {
1048# if CORO_STACKGUARD 1234 #if CORO_STACKGUARD
1049 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1235 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1050# endif 1236 #endif
1051 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1237 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1052 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1238 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1053 cctx->flags |= CC_MAPPED; 1239 cctx->flags |= CC_MAPPED;
1054 } 1240 }
1055 else 1241 else
1056#endif 1242#endif
1057 { 1243 {
1058 cctx->ssize = coro_stacksize * (long)sizeof (long); 1244 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1059 New (0, cctx->sptr, coro_stacksize, long); 1245 New (0, cctx->sptr, cctx_stacksize, long);
1060 1246
1061 if (!cctx->sptr) 1247 if (!cctx->sptr)
1062 { 1248 {
1063 perror ("FATAL: unable to allocate stack for coroutine"); 1249 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1064 _exit (EXIT_FAILURE); 1250 _exit (EXIT_FAILURE);
1065 } 1251 }
1066 1252
1067 stack_start = cctx->sptr; 1253 stack_start = cctx->sptr;
1068 stack_size = cctx->ssize; 1254 stack_size = cctx->ssize;
1069 } 1255 }
1070 1256
1071 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1257 #if CORO_USE_VALGRIND
1258 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1259 #endif
1260
1072 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1261 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1073 1262
1074 return cctx; 1263 return cctx;
1075} 1264}
1076 1265
… …
1078cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
1079{ 1268{
1080 if (!cctx) 1269 if (!cctx)
1081 return; 1270 return;
1082 1271
1272 assert (cctx != cctx_current);//D temporary
1273
1083 --cctx_count; 1274 --cctx_count;
1275 coro_destroy (&cctx->cctx);
1084 1276
1277 /* coro_transfer creates new, empty cctx's */
1278 if (cctx->sptr)
1279 {
1085#if CORO_USE_VALGRIND 1280 #if CORO_USE_VALGRIND
1086 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1281 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1087#endif 1282 #endif
1088 1283
1089#if HAVE_MMAP 1284#if HAVE_MMAP
1090 if (cctx->flags & CC_MAPPED) 1285 if (cctx->flags & CC_MAPPED)
1091 munmap (cctx->sptr, cctx->ssize); 1286 munmap (cctx->sptr, cctx->ssize);
1092 else 1287 else
1093#endif 1288#endif
1094 Safefree (cctx->sptr); 1289 Safefree (cctx->sptr);
1290 }
1095 1291
1096 Safefree (cctx); 1292 Safefree (cctx);
1097} 1293}
1098 1294
1099/* wether this cctx should be destructed */ 1295/* wether this cctx should be destructed */
1100#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1296#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1101 1297
1102static coro_cctx * 1298static coro_cctx *
1103cctx_get (pTHX) 1299cctx_get (pTHX)
1104{ 1300{
1105 while (expect_true (cctx_first)) 1301 while (expect_true (cctx_first))
… …
1112 return cctx; 1308 return cctx;
1113 1309
1114 cctx_destroy (cctx); 1310 cctx_destroy (cctx);
1115 } 1311 }
1116 1312
1117 return cctx_new (); 1313 return cctx_new_run ();
1118} 1314}
1119 1315
1120static void 1316static void
1121cctx_put (coro_cctx *cctx) 1317cctx_put (coro_cctx *cctx)
1122{ 1318{
1319 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1320
1123 /* free another cctx if overlimit */ 1321 /* free another cctx if overlimit */
1124 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1322 if (expect_false (cctx_idle >= cctx_max_idle))
1125 { 1323 {
1126 coro_cctx *first = cctx_first; 1324 coro_cctx *first = cctx_first;
1127 cctx_first = first->next; 1325 cctx_first = first->next;
1128 --cctx_idle; 1326 --cctx_idle;
1129 1327
… …
1138/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
1139 1337
1140static void 1338static void
1141transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
1142{ 1340{
1341 /* TODO: throwing up here is considered harmful */
1342
1143 if (expect_true (prev != next)) 1343 if (expect_true (prev != next))
1144 { 1344 {
1145 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1146 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1147 1347
1148 if (expect_false (next->flags & CF_RUNNING)) 1348 if (expect_false (next->flags & CF_RUNNING))
1149 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1150 1350
1151 if (expect_false (next->flags & CF_DESTROYED)) 1351 if (expect_false (next->flags & CF_DESTROYED))
1152 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1153 1353
1154#if !PERL_VERSION_ATLEAST (5,10,0) 1354#if !PERL_VERSION_ATLEAST (5,10,0)
1155 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1355 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1156 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1157#endif 1357#endif
1158 } 1358 }
1159} 1359}
1160 1360
1161/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
1162static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
1163transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1164{ 1364{
1165 dSTACKLEVEL; 1365 dSTACKLEVEL;
1166 static volatile int has_throw;
1167 1366
1168 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
1169 if (expect_false (!next)) 1368 if (expect_false (!prev))
1170 { 1369 {
1171 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
1172 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1173 } 1372 }
1174 else if (expect_true (prev != next)) 1373 else if (expect_true (prev != next))
1175 { 1374 {
1176 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
1177 1376
1178 if (expect_false (prev->flags & CF_NEW)) 1377 if (expect_false (prev->flags & CF_NEW))
1179 { 1378 {
1180 /* create a new empty context */ 1379 /* create a new empty/source context */
1181 Newz (0, prev->cctx, 1, coro_cctx);
1182 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
1183 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
1184 } 1382 }
1185 1383
1186 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
1187 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
1188
1189 LOCK;
1190 1386
1191 /* first get rid of the old state */ 1387 /* first get rid of the old state */
1192 save_perl (aTHX_ prev); 1388 save_perl (aTHX_ prev);
1193 1389
1194 if (expect_false (next->flags & CF_NEW)) 1390 if (expect_false (next->flags & CF_NEW))
… …
1199 coro_setup (aTHX_ next); 1395 coro_setup (aTHX_ next);
1200 } 1396 }
1201 else 1397 else
1202 load_perl (aTHX_ next); 1398 load_perl (aTHX_ next);
1203 1399
1204 prev__cctx = prev->cctx; 1400 assert (!prev->cctx);//D temporary
1205 1401
1206 /* possibly "free" the cctx */ 1402 /* possibly untie and reuse the cctx */
1207 if (expect_true ( 1403 if (expect_true (
1208 prev__cctx->idle_sp == STACKLEVEL 1404 cctx_current->idle_sp == STACKLEVEL
1209 && !(prev__cctx->flags & CC_TRACE) 1405 && !(cctx_current->flags & CC_TRACE)
1210 && !force_cctx 1406 && !force_cctx
1211 )) 1407 ))
1212 { 1408 {
1213 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1214 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1410 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1215 1411
1216 prev->cctx = 0;
1217
1218 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1219 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1220 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1221 if (!next->cctx) 1415 if (expect_true (!next->cctx))
1222 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1223 1417
1224 cctx_put (prev__cctx); 1418 cctx_put (cctx_current);
1225 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1226 1422
1227 ++next->usecount; 1423 ++next->usecount;
1228 1424
1229 if (expect_true (!next->cctx)) 1425 cctx_prev = cctx_current;
1230 next->cctx = cctx_get (aTHX); 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1231 1427
1232 has_throw = !!next->throw; 1428 next->cctx = 0;
1233 1429
1234 if (expect_false (prev__cctx != next->cctx)) 1430 if (expect_false (cctx_prev != cctx_current))
1235 { 1431 {
1236 prev__cctx->top_env = PL_top_env; 1432 cctx_prev->top_env = PL_top_env;
1237 PL_top_env = next->cctx->top_env; 1433 PL_top_env = cctx_current->top_env;
1238 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1239 } 1435 }
1240 1436
1241 free_coro_mortal (aTHX); 1437 transfer_tail (aTHX);
1242 UNLOCK;
1243
1244 if (expect_false (has_throw))
1245 {
1246 struct coro *coro = SvSTATE (coro_current);
1247
1248 if (coro->throw)
1249 {
1250 SV *exception = coro->throw;
1251 coro->throw = 0;
1252 sv_setsv (ERRSV, exception);
1253 croak (0);
1254 }
1255 }
1256 } 1438 }
1257} 1439}
1258
1259struct transfer_args
1260{
1261 struct coro *prev, *next;
1262};
1263 1440
1264#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1441#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1265#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1442#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1266 1443
1267/** high level stuff ********************************************************/ 1444/** high level stuff ********************************************************/
… …
1269static int 1446static int
1270coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1271{ 1448{
1272 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1273 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1274 1454
1275 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1276 1456
1277 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1278 { 1458 {
1279 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1280 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1281 LOCK;
1282 --coro_nready; 1461 --coro_nready;
1283 UNLOCK;
1284 } 1462 }
1285 else 1463 else
1286 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1287 1465
1288 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
1289 { 1467 {
1290 struct coro temp; 1468 struct coro temp;
1291 1469
1292 if (coro->flags & CF_RUNNING) 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1293 croak ("FATAL: tried to destroy currently running coroutine");
1294 1471
1295 save_perl (aTHX_ &temp); 1472 save_perl (aTHX_ &temp);
1296 load_perl (aTHX_ coro); 1473 load_perl (aTHX_ coro);
1297 1474
1298 coro_destroy (aTHX_ coro); 1475 coro_destruct (aTHX_ coro);
1299 1476
1300 load_perl (aTHX_ &temp); 1477 load_perl (aTHX_ &temp);
1301 1478
1302 coro->slot = 0; 1479 coro->slot = 0;
1303 } 1480 }
1304 1481
1305 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1306 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1307 1486
1308 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1309 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1310 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1311 1490
… …
1349# define MGf_DUP 0 1528# define MGf_DUP 0
1350#endif 1529#endif
1351}; 1530};
1352 1531
1353static void 1532static void
1354prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1533prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1355{ 1534{
1356 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
1357 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1358 TRANSFER_CHECK (*ta); 1537 TRANSFER_CHECK (*ta);
1359} 1538}
1360 1539
1361static void 1540static void
1362api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1363{ 1542{
1364 dTHX;
1365 struct transfer_args ta; 1543 struct coro_transfer_args ta;
1366 1544
1367 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1368 TRANSFER (ta, 1); 1546 TRANSFER (ta, 1);
1369} 1547}
1370 1548
1549/*****************************************************************************/
1550/* gensub: simple closure generation utility */
1551
1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1553
1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
1570}
1571
1371/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1372 1573
1373static void 1574INLINE void
1374coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1375{ 1576{
1376 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1377} 1578}
1378 1579
1379static SV * 1580INLINE SV *
1380coro_deq (pTHX) 1581coro_deq (pTHX)
1381{ 1582{
1382 int prio; 1583 int prio;
1383 1584
1384 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1387 1588
1388 return 0; 1589 return 0;
1389} 1590}
1390 1591
1391static int 1592static int
1392api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
1393{ 1594{
1394 dTHX;
1395 struct coro *coro; 1595 struct coro *coro;
1396 SV *sv_hook; 1596 SV *sv_hook;
1397 void (*xs_hook)(void); 1597 void (*xs_hook)(void);
1398 1598
1399 if (SvROK (coro_sv))
1400 coro_sv = SvRV (coro_sv);
1401
1402 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1403 1600
1404 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1405 return 0; 1602 return 0;
1406 1603
1407 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1408 1605
1409 LOCK;
1410
1411 sv_hook = coro_nready ? 0 : coro_readyhook; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1412 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1413 1608
1414 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1609 coro_enq (aTHX_ coro);
1415 ++coro_nready; 1610 ++coro_nready;
1416 1611
1417 UNLOCK;
1418
1419 if (sv_hook) 1612 if (sv_hook)
1420 { 1613 {
1421 dSP; 1614 dSP;
1422 1615
1423 ENTER; 1616 ENTER;
1424 SAVETMPS; 1617 SAVETMPS;
1425 1618
1426 PUSHMARK (SP); 1619 PUSHMARK (SP);
1427 PUTBACK; 1620 PUTBACK;
1428 call_sv (sv_hook, G_DISCARD); 1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1429 SPAGAIN;
1430 1622
1431 FREETMPS; 1623 FREETMPS;
1432 LEAVE; 1624 LEAVE;
1433 } 1625 }
1434 1626
… …
1437 1629
1438 return 1; 1630 return 1;
1439} 1631}
1440 1632
1441static int 1633static int
1442api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1443{ 1635{
1444 dTHX;
1445 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1446} 1637}
1447 1638
1448static void 1639/* expects to own a reference to next->hv */
1640INLINE void
1449prepare_schedule (pTHX_ struct transfer_args *ta) 1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1450{ 1642{
1451 SV *prev_sv, *next_sv;
1452
1453 for (;;)
1454 {
1455 LOCK;
1456 next_sv = coro_deq (aTHX);
1457
1458 /* nothing to schedule: call the idle handler */
1459 if (expect_false (!next_sv))
1460 {
1461 dSP;
1462 UNLOCK;
1463
1464 ENTER;
1465 SAVETMPS;
1466
1467 PUSHMARK (SP);
1468 PUTBACK;
1469 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1470 SPAGAIN;
1471
1472 FREETMPS;
1473 LEAVE;
1474 continue;
1475 }
1476
1477 ta->next = SvSTATE (next_sv);
1478
1479 /* cannot transfer to destroyed coros, skip and look for next */
1480 if (expect_false (ta->next->flags & CF_DESTROYED))
1481 {
1482 UNLOCK;
1483 SvREFCNT_dec (next_sv);
1484 /* coro_nready is already taken care of by destroy */
1485 continue;
1486 }
1487
1488 --coro_nready;
1489 UNLOCK;
1490 break;
1491 }
1492
1493 /* free this only after the transfer */
1494 prev_sv = SvRV (coro_current); 1643 SV *prev_sv = SvRV (coro_current);
1644
1495 ta->prev = SvSTATE (prev_sv); 1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1496 TRANSFER_CHECK (*ta); 1648 TRANSFER_CHECK (*ta);
1497 assert (ta->next->flags & CF_READY); 1649
1498 ta->next->flags &= ~CF_READY;
1499 SvRV_set (coro_current, next_sv); 1650 SvRV_set (coro_current, (SV *)next->hv);
1500 1651
1501 LOCK;
1502 free_coro_mortal (aTHX); 1652 free_coro_mortal (aTHX);
1503 coro_mortal = prev_sv; 1653 coro_mortal = prev_sv;
1504 UNLOCK;
1505} 1654}
1506 1655
1507static void 1656static void
1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1658{
1659 for (;;)
1660 {
1661 SV *next_sv = coro_deq (aTHX);
1662
1663 if (expect_true (next_sv))
1664 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1670 else
1671 {
1672 next->flags &= ~CF_READY;
1673 --coro_nready;
1674
1675 prepare_schedule_to (aTHX_ ta, next);
1676 break;
1677 }
1678 }
1679 else
1680 {
1681 /* nothing to schedule: call the idle handler */
1682 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle)))
1684 {
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready;
1688 }
1689 else
1690 {
1691 dSP;
1692
1693 ENTER;
1694 SAVETMPS;
1695
1696 PUSHMARK (SP);
1697 PUTBACK;
1698 call_sv (sv_idle, G_VOID | G_DISCARD);
1699
1700 FREETMPS;
1701 LEAVE;
1702 }
1703 }
1704 }
1705}
1706
1707INLINE void
1508prepare_cede (pTHX_ struct transfer_args *ta) 1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1509{ 1709{
1510 api_ready (coro_current); 1710 api_ready (aTHX_ coro_current);
1511 prepare_schedule (aTHX_ ta); 1711 prepare_schedule (aTHX_ ta);
1512} 1712}
1513 1713
1714INLINE void
1715prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1716{
1717 SV *prev = SvRV (coro_current);
1718
1719 if (coro_nready)
1720 {
1721 prepare_schedule (aTHX_ ta);
1722 api_ready (aTHX_ prev);
1723 }
1724 else
1725 prepare_nop (aTHX_ ta);
1726}
1727
1728static void
1729api_schedule (pTHX)
1730{
1731 struct coro_transfer_args ta;
1732
1733 prepare_schedule (aTHX_ &ta);
1734 TRANSFER (ta, 1);
1735}
1736
1737static void
1738api_schedule_to (pTHX_ SV *coro_sv)
1739{
1740 struct coro_transfer_args ta;
1741 struct coro *next = SvSTATE (coro_sv);
1742
1743 SvREFCNT_inc_NN (coro_sv);
1744 prepare_schedule_to (aTHX_ &ta, next);
1745}
1746
1514static int 1747static int
1515prepare_cede_notself (pTHX_ struct transfer_args *ta) 1748api_cede (pTHX)
1516{ 1749{
1517 if (coro_nready) 1750 struct coro_transfer_args ta;
1518 { 1751
1519 SV *prev = SvRV (coro_current);
1520 prepare_schedule (aTHX_ ta); 1752 prepare_cede (aTHX_ &ta);
1521 api_ready (prev); 1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1522 return 1; 1757 return 1;
1523 } 1758 }
1524 else 1759 else
1525 return 0; 1760 return 0;
1526} 1761}
1527 1762
1528static void
1529api_schedule (void)
1530{
1531 dTHX;
1532 struct transfer_args ta;
1533
1534 prepare_schedule (aTHX_ &ta);
1535 TRANSFER (ta, 1);
1536}
1537
1538static int 1763static int
1539api_cede (void) 1764api_cede_notself (pTHX)
1540{ 1765{
1541 dTHX; 1766 if (coro_nready)
1767 {
1542 struct transfer_args ta; 1768 struct coro_transfer_args ta;
1543 1769
1544 prepare_cede (aTHX_ &ta); 1770 prepare_cede_notself (aTHX_ &ta);
1545
1546 if (expect_true (ta.prev != ta.next))
1547 {
1548 TRANSFER (ta, 1); 1771 TRANSFER (ta, 1);
1549 return 1; 1772 return 1;
1550 } 1773 }
1551 else 1774 else
1552 return 0; 1775 return 0;
1553} 1776}
1554 1777
1555static int 1778static void
1556api_cede_notself (void)
1557{
1558 dTHX;
1559 struct transfer_args ta;
1560
1561 if (prepare_cede_notself (aTHX_ &ta))
1562 {
1563 TRANSFER (ta, 1);
1564 return 1;
1565 }
1566 else
1567 return 0;
1568}
1569
1570static void
1571api_trace (SV *coro_sv, int flags) 1779api_trace (pTHX_ SV *coro_sv, int flags)
1572{ 1780{
1573 dTHX;
1574 struct coro *coro = SvSTATE (coro_sv); 1781 struct coro *coro = SvSTATE (coro_sv);
1575 1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1785
1576 if (flags & CC_TRACE) 1786 if (flags & CC_TRACE)
1577 { 1787 {
1578 if (!coro->cctx) 1788 if (!coro->cctx)
1579 coro->cctx = cctx_new (); 1789 coro->cctx = cctx_new_run ();
1580 else if (!(coro->cctx->flags & CC_TRACE)) 1790 else if (!(coro->cctx->flags & CC_TRACE))
1581 croak ("cannot enable tracing on coroutine with custom stack"); 1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1582 1792
1583 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1584 } 1794 }
1585 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1586 { 1796 {
… …
1591 else 1801 else
1592 coro->slot->runops = RUNOPS_DEFAULT; 1802 coro->slot->runops = RUNOPS_DEFAULT;
1593 } 1803 }
1594} 1804}
1595 1805
1806static void
1807coro_call_on_destroy (pTHX_ struct coro *coro)
1808{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811
1812 if (on_destroyp)
1813 {
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815
1816 while (AvFILLp (on_destroy) >= 0)
1817 {
1818 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP);
1822
1823 if (statusp)
1824 {
1825 int i;
1826 AV *status = (AV *)SvRV (*statusp);
1827 EXTEND (SP, AvFILLp (status) + 1);
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 }
1832
1833 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1835 }
1836 }
1837}
1838
1839static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845
1846 av_extend (av, items - 1);
1847 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i]));
1849
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1851
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager);
1854
1855 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat;
1857}
1858
1859/*****************************************************************************/
1860/* async pool handler */
1861
1862static int
1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1864{
1865 HV *hv = (HV *)SvRV (coro_current);
1866 struct coro *coro = (struct coro *)frame->data;
1867
1868 if (!coro->invoke_cb)
1869 return 1; /* loop till we have invoke */
1870 else
1871 {
1872 hv_store (hv, "desc", sizeof ("desc") - 1,
1873 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1874
1875 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1876
1877 {
1878 dSP;
1879 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1880 PUTBACK;
1881 }
1882
1883 SvREFCNT_dec (GvAV (PL_defgv));
1884 GvAV (PL_defgv) = coro->invoke_av;
1885 coro->invoke_av = 0;
1886
1887 return 0;
1888 }
1889}
1890
1891static void
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896
1897 if (expect_true (coro->saved_deffh))
1898 {
1899 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0;
1902
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1907 coro->invoke_av = newAV ();
1908
1909 frame->prepare = prepare_nop;
1910 }
1911 else
1912 {
1913 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1915
1916 coro->prio = 0;
1917
1918 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1919 api_trace (aTHX_ coro_current, 0);
1920
1921 frame->prepare = prepare_schedule;
1922 av_push (av_async_pool, SvREFCNT_inc (hv));
1923 }
1924 }
1925 else
1926 {
1927 /* first iteration, simply fall through */
1928 frame->prepare = prepare_nop;
1929 }
1930
1931 frame->check = slf_check_pool_handler;
1932 frame->data = (void *)coro;
1933}
1934
1935/*****************************************************************************/
1936/* rouse callback */
1937
1938#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1939
1940static void
1941coro_rouse_callback (pTHX_ CV *cv)
1942{
1943 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG;
1945
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 {
1948 /* first call, set args */
1949 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951
1952 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955
1956 /* better take a full copy of the arguments */
1957 while (items--)
1958 av_store (av, items, newSVsv (ST (items)));
1959 }
1960
1961 XSRETURN_EMPTY;
1962}
1963
1964static int
1965slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1966{
1967 SV *data = (SV *)frame->data;
1968
1969 if (CORO_THROW)
1970 return 0;
1971
1972 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1973 return 1;
1974
1975 /* now push all results on the stack */
1976 {
1977 dSP;
1978 AV *av = (AV *)SvRV (data);
1979 int i;
1980
1981 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984
1985 /* we have stolen the elements, so ste length to zero and free */
1986 AvFILLp (av) = -1;
1987 av_undef (av);
1988
1989 PUTBACK;
1990 }
1991
1992 return 0;
1993}
1994
1995static void
1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1997{
1998 SV *cb;
1999
2000 if (items)
2001 cb = arg [0];
2002 else
2003 {
2004 struct coro *coro = SvSTATE_current;
2005
2006 if (!coro->rouse_cb)
2007 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2008
2009 cb = sv_2mortal (coro->rouse_cb);
2010 coro->rouse_cb = 0;
2011 }
2012
2013 if (!SvROK (cb)
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,");
2017
2018 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG;
2021
2022 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait;
2025 }
2026}
2027
2028static SV *
2029coro_new_rouse_cb (pTHX)
2030{
2031 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2035
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */
2038
2039 SvREFCNT_dec (coro->rouse_cb);
2040 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2041
2042 return cb;
2043}
2044
2045/*****************************************************************************/
2046/* schedule-like-function opcode (SLF) */
2047
2048static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2049static const CV *slf_cv;
2050static SV **slf_argv;
2051static int slf_argc, slf_arga; /* count, allocated */
2052static I32 slf_ax; /* top of stack, for restore */
2053
2054/* this restores the stack in the case we patched the entersub, to */
2055/* recreate the stack frame as perl will on following calls */
2056/* since entersub cleared the stack */
2057static OP *
2058pp_restore (pTHX)
2059{
2060 int i;
2061 SV **SP = PL_stack_base + slf_ax;
2062
2063 PUSHMARK (SP);
2064
2065 EXTEND (SP, slf_argc + 1);
2066
2067 for (i = 0; i < slf_argc; ++i)
2068 PUSHs (sv_2mortal (slf_argv [i]));
2069
2070 PUSHs ((SV *)CvGV (slf_cv));
2071
2072 RETURNOP (slf_restore.op_first);
2073}
2074
2075static void
2076slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2077{
2078 SV **arg = (SV **)slf_frame.data;
2079
2080 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2081}
2082
2083static void
2084slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (items != 2)
2087 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2088
2089 frame->prepare = slf_prepare_transfer;
2090 frame->check = slf_check_nop;
2091 frame->data = (void *)arg; /* let's hope it will stay valid */
2092}
2093
2094static void
2095slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 frame->prepare = prepare_schedule;
2098 frame->check = slf_check_nop;
2099}
2100
2101static void
2102slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2103{
2104 struct coro *next = (struct coro *)slf_frame.data;
2105
2106 SvREFCNT_inc_NN (next->hv);
2107 prepare_schedule_to (aTHX_ ta, next);
2108}
2109
2110static void
2111slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 if (!items)
2114 croak ("Coro::schedule_to expects a coroutine argument, caught");
2115
2116 frame->data = (void *)SvSTATE (arg [0]);
2117 frame->prepare = slf_prepare_schedule_to;
2118 frame->check = slf_check_nop;
2119}
2120
2121static void
2122slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 api_ready (aTHX_ SvRV (coro_current));
2125
2126 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2127}
2128
2129static void
2130slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 frame->prepare = prepare_cede;
2133 frame->check = slf_check_nop;
2134}
2135
2136static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{
2139 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop;
2141}
2142
2143/*
2144 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same
2146 * stack offset
2147 * SLF stands for "schedule-like-function".
2148 */
2149static OP *
2150pp_slf (pTHX)
2151{
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153
2154 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare))
2158 {
2159 /* first iteration */
2160 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */
2163 SV *gv = *sp;
2164
2165 /* do a quick consistency check on the "function" object, and if it isn't */
2166 /* for us, divert to the real entersub */
2167 if (SvTYPE (gv) != SVt_PVGV
2168 || !GvCV (gv)
2169 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2170 return PL_ppaddr[OP_ENTERSUB](aTHX);
2171
2172 if (!(PL_op->op_flags & OPf_STACKED))
2173 {
2174 /* ampersand-form of call, use @_ instead of stack */
2175 AV *av = GvAV (PL_defgv);
2176 arg = AvARRAY (av);
2177 items = AvFILLp (av) + 1;
2178 }
2179
2180 /* now call the init function, which needs to set up slf_frame */
2181 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2182 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2183
2184 /* pop args */
2185 SP = PL_stack_base + POPMARK;
2186
2187 PUTBACK;
2188 }
2189
2190 /* now that we have a slf_frame, interpret it! */
2191 /* we use a callback system not to make the code needlessly */
2192 /* complicated, but so we can run multiple perl coros from one cctx */
2193
2194 do
2195 {
2196 struct coro_transfer_args ta;
2197
2198 slf_frame.prepare (aTHX_ &ta);
2199 TRANSFER (ta, 0);
2200
2201 checkmark = PL_stack_sp - PL_stack_base;
2202 }
2203 while (slf_frame.check (aTHX_ &slf_frame));
2204
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206
2207 /* exception handling */
2208 if (expect_false (CORO_THROW))
2209 {
2210 SV *exception = sv_2mortal (CORO_THROW);
2211
2212 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception);
2214 croak (0);
2215 }
2216
2217 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR)
2220 {
2221 dSP;
2222 SV **bot = PL_stack_base + checkmark;
2223
2224 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */
2227 bot [1] = *sp;
2228
2229 SP = bot + 1;
2230
2231 PUTBACK;
2232 }
2233
2234 return NORMAL;
2235}
2236
2237static void
2238api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2239{
2240 int i;
2241 SV **arg = PL_stack_base + ax;
2242 int items = PL_stack_sp - arg + 1;
2243
2244 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2245
2246 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2247 && PL_op->op_ppaddr != pp_slf)
2248 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2249
2250 CvFLAGS (cv) |= CVf_SLF;
2251 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2252 slf_cv = cv;
2253
2254 /* we patch the op, and then re-run the whole call */
2255 /* we have to put the same argument on the stack for this to work */
2256 /* and this will be done by pp_restore */
2257 slf_restore.op_next = (OP *)&slf_restore;
2258 slf_restore.op_type = OP_CUSTOM;
2259 slf_restore.op_ppaddr = pp_restore;
2260 slf_restore.op_first = PL_op;
2261
2262 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2263
2264 if (PL_op->op_flags & OPf_STACKED)
2265 {
2266 if (items > slf_arga)
2267 {
2268 slf_arga = items;
2269 free (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *));
2271 }
2272
2273 slf_argc = items;
2274
2275 for (i = 0; i < items; ++i)
2276 slf_argv [i] = SvREFCNT_inc (arg [i]);
2277 }
2278 else
2279 slf_argc = 0;
2280
2281 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283
2284 PL_op = (OP *)&slf_restore;
2285}
2286
2287/*****************************************************************************/
2288/* PerlIO::cede */
2289
2290typedef struct
2291{
2292 PerlIOBuf base;
2293 NV next, every;
2294} PerlIOCede;
2295
2296static IV
2297PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300
2301 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2302 self->next = nvtime () + self->every;
2303
2304 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2305}
2306
2307static SV *
2308PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2309{
2310 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2311
2312 return newSVnv (self->every);
2313}
2314
2315static IV
2316PerlIOCede_flush (pTHX_ PerlIO *f)
2317{
2318 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2319 double now = nvtime ();
2320
2321 if (now >= self->next)
2322 {
2323 api_cede (aTHX);
2324 self->next = now + self->every;
2325 }
2326
2327 return PerlIOBuf_flush (aTHX_ f);
2328}
2329
2330static PerlIO_funcs PerlIO_cede =
2331{
2332 sizeof(PerlIO_funcs),
2333 "cede",
2334 sizeof(PerlIOCede),
2335 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2336 PerlIOCede_pushed,
2337 PerlIOBuf_popped,
2338 PerlIOBuf_open,
2339 PerlIOBase_binmode,
2340 PerlIOCede_getarg,
2341 PerlIOBase_fileno,
2342 PerlIOBuf_dup,
2343 PerlIOBuf_read,
2344 PerlIOBuf_unread,
2345 PerlIOBuf_write,
2346 PerlIOBuf_seek,
2347 PerlIOBuf_tell,
2348 PerlIOBuf_close,
2349 PerlIOCede_flush,
2350 PerlIOBuf_fill,
2351 PerlIOBase_eof,
2352 PerlIOBase_error,
2353 PerlIOBase_clearerr,
2354 PerlIOBase_setlinebuf,
2355 PerlIOBuf_get_base,
2356 PerlIOBuf_bufsiz,
2357 PerlIOBuf_get_ptr,
2358 PerlIOBuf_get_cnt,
2359 PerlIOBuf_set_ptrcnt,
2360};
2361
2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
2364
2365static SV *
2366coro_waitarray_new (pTHX_ int count)
2367{
2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV ();
2370 SV **ary;
2371
2372 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary;
2375#if PERL_VERSION_ATLEAST (5,10,0)
2376 AvARRAY (av) = ary;
2377#else
2378 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2379 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2380 SvPVX ((SV *)av) = (char *)ary;
2381#endif
2382 AvMAX (av) = 1;
2383 AvFILLp (av) = 0;
2384 ary [0] = newSViv (count);
2385
2386 return newRV_noinc ((SV *)av);
2387}
2388
2389/* semaphore */
2390
2391static void
2392coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2393{
2394 SV *count_sv = AvARRAY (av)[0];
2395 IV count = SvIVX (count_sv);
2396
2397 count += adjust;
2398 SvIVX (count_sv) = count;
2399
2400 /* now wake up as many waiters as are expected to lock */
2401 while (count > 0 && AvFILLp (av) > 0)
2402 {
2403 SV *cb;
2404
2405 /* swap first two elements so we can shift a waiter */
2406 AvARRAY (av)[0] = AvARRAY (av)[1];
2407 AvARRAY (av)[1] = count_sv;
2408 cb = av_shift (av);
2409
2410 if (SvOBJECT (cb))
2411 {
2412 api_ready (aTHX_ cb);
2413 --count;
2414 }
2415 else if (SvTYPE (cb) == SVt_PVCV)
2416 {
2417 dSP;
2418 PUSHMARK (SP);
2419 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2420 PUTBACK;
2421 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2422 }
2423
2424 SvREFCNT_dec (cb);
2425 }
2426}
2427
2428static void
2429coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2430{
2431 /* call $sem->adjust (0) to possibly wake up some other waiters */
2432 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2433}
2434
2435static int
2436slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2437{
2438 AV *av = (AV *)frame->data;
2439 SV *count_sv = AvARRAY (av)[0];
2440
2441 /* if we are about to throw, don't actually acquire the lock, just throw */
2442 if (CORO_THROW)
2443 return 0;
2444 else if (SvIVX (count_sv) > 0)
2445 {
2446 SvSTATE_current->on_destroy = 0;
2447
2448 if (acquire)
2449 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2450 else
2451 coro_semaphore_adjust (aTHX_ av, 0);
2452
2453 return 0;
2454 }
2455 else
2456 {
2457 int i;
2458 /* if we were woken up but can't down, we look through the whole */
2459 /* waiters list and only add us if we aren't in there already */
2460 /* this avoids some degenerate memory usage cases */
2461
2462 for (i = 1; i <= AvFILLp (av); ++i)
2463 if (AvARRAY (av)[i] == SvRV (coro_current))
2464 return 1;
2465
2466 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2467 return 1;
2468 }
2469}
2470
2471static int
2472slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2473{
2474 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2475}
2476
2477static int
2478slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2479{
2480 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2481}
2482
2483static void
2484slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2485{
2486 AV *av = (AV *)SvRV (arg [0]);
2487
2488 if (SvIVX (AvARRAY (av)[0]) > 0)
2489 {
2490 frame->data = (void *)av;
2491 frame->prepare = prepare_nop;
2492 }
2493 else
2494 {
2495 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2496
2497 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2498 frame->prepare = prepare_schedule;
2499
2500 /* to avoid race conditions when a woken-up coro gets terminated */
2501 /* we arrange for a temporary on_destroy that calls adjust (0) */
2502 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2503 }
2504}
2505
2506static void
2507slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2510 frame->check = slf_check_semaphore_down;
2511}
2512
2513static void
2514slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2515{
2516 if (items >= 2)
2517 {
2518 /* callback form */
2519 AV *av = (AV *)SvRV (arg [0]);
2520 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2521
2522 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2523
2524 if (SvIVX (AvARRAY (av)[0]) > 0)
2525 coro_semaphore_adjust (aTHX_ av, 0);
2526
2527 frame->prepare = prepare_nop;
2528 frame->check = slf_check_nop;
2529 }
2530 else
2531 {
2532 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2533 frame->check = slf_check_semaphore_wait;
2534 }
2535}
2536
2537/* signal */
2538
2539static void
2540coro_signal_wake (pTHX_ AV *av, int count)
2541{
2542 SvIVX (AvARRAY (av)[0]) = 0;
2543
2544 /* now signal count waiters */
2545 while (count > 0 && AvFILLp (av) > 0)
2546 {
2547 SV *cb;
2548
2549 /* swap first two elements so we can shift a waiter */
2550 cb = AvARRAY (av)[0];
2551 AvARRAY (av)[0] = AvARRAY (av)[1];
2552 AvARRAY (av)[1] = cb;
2553
2554 cb = av_shift (av);
2555
2556 api_ready (aTHX_ cb);
2557 sv_setiv (cb, 0); /* signal waiter */
2558 SvREFCNT_dec (cb);
2559
2560 --count;
2561 }
2562}
2563
2564static int
2565slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2566{
2567 /* if we are about to throw, also stop waiting */
2568 return SvROK ((SV *)frame->data) && !CORO_THROW;
2569}
2570
2571static void
2572slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 AV *av = (AV *)SvRV (arg [0]);
2575
2576 if (SvIVX (AvARRAY (av)[0]))
2577 {
2578 SvIVX (AvARRAY (av)[0]) = 0;
2579 frame->prepare = prepare_nop;
2580 frame->check = slf_check_nop;
2581 }
2582 else
2583 {
2584 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2585
2586 av_push (av, waiter);
2587
2588 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2589 frame->prepare = prepare_schedule;
2590 frame->check = slf_check_signal_wait;
2591 }
2592}
2593
2594/*****************************************************************************/
2595/* Coro::AIO */
2596
2597#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2598
2599/* helper storage struct */
2600struct io_state
2601{
2602 int errorno;
2603 I32 laststype; /* U16 in 5.10.0 */
2604 int laststatval;
2605 Stat_t statcache;
2606};
2607
2608static void
2609coro_aio_callback (pTHX_ CV *cv)
2610{
2611 dXSARGS;
2612 AV *state = (AV *)GENSUB_ARG;
2613 SV *coro = av_pop (state);
2614 SV *data_sv = newSV (sizeof (struct io_state));
2615
2616 av_extend (state, items - 1);
2617
2618 sv_upgrade (data_sv, SVt_PV);
2619 SvCUR_set (data_sv, sizeof (struct io_state));
2620 SvPOK_only (data_sv);
2621
2622 {
2623 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2624
2625 data->errorno = errno;
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 }
2630
2631 /* now build the result vector out of all the parameters and the data_sv */
2632 {
2633 int i;
2634
2635 for (i = 0; i < items; ++i)
2636 av_push (state, SvREFCNT_inc_NN (ST (i)));
2637 }
2638
2639 av_push (state, data_sv);
2640
2641 api_ready (aTHX_ coro);
2642 SvREFCNT_dec (coro);
2643 SvREFCNT_dec ((AV *)state);
2644}
2645
2646static int
2647slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2648{
2649 AV *state = (AV *)frame->data;
2650
2651 /* if we are about to throw, return early */
2652 /* this does not cancel the aio request, but at least */
2653 /* it quickly returns */
2654 if (CORO_THROW)
2655 return 0;
2656
2657 /* one element that is an RV? repeat! */
2658 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2659 return 1;
2660
2661 /* restore status */
2662 {
2663 SV *data_sv = av_pop (state);
2664 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2665
2666 errno = data->errorno;
2667 PL_laststype = data->laststype;
2668 PL_laststatval = data->laststatval;
2669 PL_statcache = data->statcache;
2670
2671 SvREFCNT_dec (data_sv);
2672 }
2673
2674 /* push result values */
2675 {
2676 dSP;
2677 int i;
2678
2679 EXTEND (SP, AvFILLp (state) + 1);
2680 for (i = 0; i <= AvFILLp (state); ++i)
2681 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2682
2683 PUTBACK;
2684 }
2685
2686 return 0;
2687}
2688
2689static void
2690slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2691{
2692 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2693 SV *coro_hv = SvRV (coro_current);
2694 struct coro *coro = SvSTATE_hv (coro_hv);
2695
2696 /* put our coroutine id on the state arg */
2697 av_push (state, SvREFCNT_inc_NN (coro_hv));
2698
2699 /* first see whether we have a non-zero priority and set it as AIO prio */
2700 if (coro->prio)
2701 {
2702 dSP;
2703
2704 static SV *prio_cv;
2705 static SV *prio_sv;
2706
2707 if (expect_false (!prio_cv))
2708 {
2709 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2710 prio_sv = newSViv (0);
2711 }
2712
2713 PUSHMARK (SP);
2714 sv_setiv (prio_sv, coro->prio);
2715 XPUSHs (prio_sv);
2716
2717 PUTBACK;
2718 call_sv (prio_cv, G_VOID | G_DISCARD);
2719 }
2720
2721 /* now call the original request */
2722 {
2723 dSP;
2724 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2725 int i;
2726
2727 PUSHMARK (SP);
2728
2729 /* first push all args to the stack */
2730 EXTEND (SP, items + 1);
2731
2732 for (i = 0; i < items; ++i)
2733 PUSHs (arg [i]);
2734
2735 /* now push the callback closure */
2736 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2737
2738 /* now call the AIO function - we assume our request is uncancelable */
2739 PUTBACK;
2740 call_sv ((SV *)req, G_VOID | G_DISCARD);
2741 }
2742
2743 /* now that the requets is going, we loop toll we have a result */
2744 frame->data = (void *)state;
2745 frame->prepare = prepare_schedule;
2746 frame->check = slf_check_aio_req;
2747}
2748
2749static void
2750coro_aio_req_xs (pTHX_ CV *cv)
2751{
2752 dXSARGS;
2753
2754 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2755
2756 XSRETURN_EMPTY;
2757}
2758
2759/*****************************************************************************/
2760
2761#if CORO_CLONE
2762# include "clone.c"
2763#endif
2764
1596MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2765MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1597 2766
1598PROTOTYPES: DISABLE 2767PROTOTYPES: DISABLE
1599 2768
1600BOOT: 2769BOOT:
1601{ 2770{
1602#ifdef USE_ITHREADS 2771#ifdef USE_ITHREADS
1603 MUTEX_INIT (&coro_mutex); 2772# if CORO_PTHREAD
2773 coro_thx = PERL_GET_CONTEXT;
2774# endif
1604#endif 2775#endif
1605 BOOT_PAGESIZE; 2776 BOOT_PAGESIZE;
2777
2778 cctx_current = cctx_new_empty ();
1606 2779
1607 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2780 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1608 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2781 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1609 2782
1610 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2783 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1611 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2784 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1612 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2785 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1613 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1614 2786
1615 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2787 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1616 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2788 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1617 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2789 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1618 2790
… …
1627 main_top_env = PL_top_env; 2799 main_top_env = PL_top_env;
1628 2800
1629 while (main_top_env->je_prev) 2801 while (main_top_env->je_prev)
1630 main_top_env = main_top_env->je_prev; 2802 main_top_env = main_top_env->je_prev;
1631 2803
2804 {
2805 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2806
2807 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2808 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2809
2810 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2811 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2812 }
2813
1632 coroapi.ver = CORO_API_VERSION; 2814 coroapi.ver = CORO_API_VERSION;
1633 coroapi.rev = CORO_API_REVISION; 2815 coroapi.rev = CORO_API_REVISION;
2816
1634 coroapi.transfer = api_transfer; 2817 coroapi.transfer = api_transfer;
2818
2819 coroapi.sv_state = SvSTATE_;
2820 coroapi.execute_slf = api_execute_slf;
2821 coroapi.prepare_nop = prepare_nop;
2822 coroapi.prepare_schedule = prepare_schedule;
2823 coroapi.prepare_cede = prepare_cede;
2824 coroapi.prepare_cede_notself = prepare_cede_notself;
2825
2826 {
2827 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2828
2829 if (!svp) croak ("Time::HiRes is required");
2830 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2831
2832 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2833 }
1635 2834
1636 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2835 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1637} 2836}
1638 2837
1639SV * 2838SV *
1640new (char *klass, ...) 2839new (char *klass, ...)
2840 ALIAS:
2841 Coro::new = 1
1641 CODE: 2842 CODE:
1642{ 2843{
1643 struct coro *coro; 2844 struct coro *coro;
1644 MAGIC *mg; 2845 MAGIC *mg;
1645 HV *hv; 2846 HV *hv;
2847 CV *cb;
1646 int i; 2848 int i;
2849
2850 if (items > 1)
2851 {
2852 cb = coro_sv_2cv (aTHX_ ST (1));
2853
2854 if (!ix)
2855 {
2856 if (CvISXSUB (cb))
2857 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2858
2859 if (!CvROOT (cb))
2860 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2861 }
2862 }
1647 2863
1648 Newz (0, coro, 1, struct coro); 2864 Newz (0, coro, 1, struct coro);
1649 coro->args = newAV (); 2865 coro->args = newAV ();
1650 coro->flags = CF_NEW; 2866 coro->flags = CF_NEW;
1651 2867
… …
1656 coro->hv = hv = newHV (); 2872 coro->hv = hv = newHV ();
1657 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1658 mg->mg_flags |= MGf_DUP; 2874 mg->mg_flags |= MGf_DUP;
1659 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1660 2876
2877 if (items > 1)
2878 {
1661 av_extend (coro->args, items - 1); 2879 av_extend (coro->args, items - 1 + ix - 1);
2880
2881 if (ix)
2882 {
2883 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2884 cb = cv_coro_run;
2885 }
2886
2887 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2888
1662 for (i = 1; i < items; i++) 2889 for (i = 2; i < items; i++)
1663 av_push (coro->args, newSVsv (ST (i))); 2890 av_push (coro->args, newSVsv (ST (i)));
2891 }
1664} 2892}
1665 OUTPUT: 2893 OUTPUT:
1666 RETVAL 2894 RETVAL
1667 2895
1668# these not obviously related functions are all rolled into the same xs
1669# function to increase chances that they all will call transfer with the same
1670# stack offset
1671void 2896void
1672_set_stacklevel (...) 2897transfer (...)
1673 ALIAS: 2898 PROTOTYPE: $$
1674 Coro::State::transfer = 1 2899 CODE:
1675 Coro::schedule = 2 2900 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1676 Coro::cede = 3
1677 Coro::cede_notself = 4
1678 CODE:
1679{
1680 struct transfer_args ta;
1681
1682 PUTBACK;
1683 switch (ix)
1684 {
1685 case 0:
1686 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1687 ta.next = 0;
1688 break;
1689
1690 case 1:
1691 if (items != 2)
1692 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1693
1694 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1695 break;
1696
1697 case 2:
1698 prepare_schedule (aTHX_ &ta);
1699 break;
1700
1701 case 3:
1702 prepare_cede (aTHX_ &ta);
1703 break;
1704
1705 case 4:
1706 if (!prepare_cede_notself (aTHX_ &ta))
1707 XSRETURN_EMPTY;
1708
1709 break;
1710 }
1711 SPAGAIN;
1712
1713 BARRIER;
1714 PUTBACK;
1715 TRANSFER (ta, 0);
1716 SPAGAIN; /* might be the sp of a different coroutine now */
1717 /* be extra careful not to ever do anything after TRANSFER */
1718}
1719 2901
1720bool 2902bool
1721_destroy (SV *coro_sv) 2903_destroy (SV *coro_sv)
1722 CODE: 2904 CODE:
1723 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2905 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1728_exit (int code) 2910_exit (int code)
1729 PROTOTYPE: $ 2911 PROTOTYPE: $
1730 CODE: 2912 CODE:
1731 _exit (code); 2913 _exit (code);
1732 2914
2915SV *
2916clone (Coro::State coro)
2917 CODE:
2918{
2919#if CORO_CLONE
2920 struct coro *ncoro = coro_clone (coro);
2921 MAGIC *mg;
2922 /* TODO: too much duplication */
2923 ncoro->hv = newHV ();
2924 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2925 mg->mg_flags |= MGf_DUP;
2926 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2927#else
2928 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2929#endif
2930}
2931 OUTPUT:
2932 RETVAL
2933
1733int 2934int
1734cctx_stacksize (int new_stacksize = 0) 2935cctx_stacksize (int new_stacksize = 0)
2936 PROTOTYPE: ;$
1735 CODE: 2937 CODE:
1736 RETVAL = coro_stacksize; 2938 RETVAL = cctx_stacksize;
1737 if (new_stacksize) 2939 if (new_stacksize)
2940 {
1738 coro_stacksize = new_stacksize; 2941 cctx_stacksize = new_stacksize;
2942 ++cctx_gen;
2943 }
1739 OUTPUT: 2944 OUTPUT:
1740 RETVAL 2945 RETVAL
1741 2946
1742int 2947int
2948cctx_max_idle (int max_idle = 0)
2949 PROTOTYPE: ;$
2950 CODE:
2951 RETVAL = cctx_max_idle;
2952 if (max_idle > 1)
2953 cctx_max_idle = max_idle;
2954 OUTPUT:
2955 RETVAL
2956
2957int
1743cctx_count () 2958cctx_count ()
2959 PROTOTYPE:
1744 CODE: 2960 CODE:
1745 RETVAL = cctx_count; 2961 RETVAL = cctx_count;
1746 OUTPUT: 2962 OUTPUT:
1747 RETVAL 2963 RETVAL
1748 2964
1749int 2965int
1750cctx_idle () 2966cctx_idle ()
2967 PROTOTYPE:
1751 CODE: 2968 CODE:
1752 RETVAL = cctx_idle; 2969 RETVAL = cctx_idle;
1753 OUTPUT: 2970 OUTPUT:
1754 RETVAL 2971 RETVAL
1755 2972
1756void 2973void
1757list () 2974list ()
2975 PROTOTYPE:
1758 PPCODE: 2976 PPCODE:
1759{ 2977{
1760 struct coro *coro; 2978 struct coro *coro;
1761 for (coro = coro_first; coro; coro = coro->next) 2979 for (coro = coro_first; coro; coro = coro->next)
1762 if (coro->hv) 2980 if (coro->hv)
… …
1767call (Coro::State coro, SV *coderef) 2985call (Coro::State coro, SV *coderef)
1768 ALIAS: 2986 ALIAS:
1769 eval = 1 2987 eval = 1
1770 CODE: 2988 CODE:
1771{ 2989{
1772 if (coro->mainstack) 2990 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1773 { 2991 {
1774 struct coro temp; 2992 struct coro temp;
1775 2993
1776 if (!(coro->flags & CF_RUNNING)) 2994 if (!(coro->flags & CF_RUNNING))
1777 { 2995 {
… …
1821 RETVAL = boolSV (coro->flags & ix); 3039 RETVAL = boolSV (coro->flags & ix);
1822 OUTPUT: 3040 OUTPUT:
1823 RETVAL 3041 RETVAL
1824 3042
1825void 3043void
3044throw (Coro::State self, SV *throw = &PL_sv_undef)
3045 PROTOTYPE: $;$
3046 CODE:
3047{
3048 struct coro *current = SvSTATE_current;
3049 SV **throwp = self == current ? &CORO_THROW : &self->except;
3050 SvREFCNT_dec (*throwp);
3051 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3052}
3053
3054void
1826api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3055api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3056 PROTOTYPE: $;$
3057 C_ARGS: aTHX_ coro, flags
1827 3058
1828SV * 3059SV *
1829has_cctx (Coro::State coro) 3060has_cctx (Coro::State coro)
1830 PROTOTYPE: $ 3061 PROTOTYPE: $
1831 CODE: 3062 CODE:
1832 RETVAL = boolSV (!!coro->cctx); 3063 /* maybe manage the running flag differently */
3064 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1833 OUTPUT: 3065 OUTPUT:
1834 RETVAL 3066 RETVAL
1835 3067
1836int 3068int
1837is_traced (Coro::State coro) 3069is_traced (Coro::State coro)
… …
1839 CODE: 3071 CODE:
1840 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3072 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1841 OUTPUT: 3073 OUTPUT:
1842 RETVAL 3074 RETVAL
1843 3075
1844IV 3076UV
1845rss (Coro::State coro) 3077rss (Coro::State coro)
1846 PROTOTYPE: $ 3078 PROTOTYPE: $
1847 ALIAS: 3079 ALIAS:
1848 usecount = 1 3080 usecount = 1
1849 CODE: 3081 CODE:
… …
1855 OUTPUT: 3087 OUTPUT:
1856 RETVAL 3088 RETVAL
1857 3089
1858void 3090void
1859force_cctx () 3091force_cctx ()
3092 PROTOTYPE:
1860 CODE: 3093 CODE:
1861 struct coro *coro = SvSTATE (coro_current);
1862 coro->cctx->idle_sp = 0; 3094 cctx_current->idle_sp = 0;
3095
3096void
3097swap_defsv (Coro::State self)
3098 PROTOTYPE: $
3099 ALIAS:
3100 swap_defav = 1
3101 CODE:
3102 if (!self->slot)
3103 croak ("cannot swap state with coroutine that has no saved state,");
3104 else
3105 {
3106 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3107 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3108
3109 SV *tmp = *src; *src = *dst; *dst = tmp;
3110 }
3111
1863 3112
1864MODULE = Coro::State PACKAGE = Coro 3113MODULE = Coro::State PACKAGE = Coro
1865 3114
1866BOOT: 3115BOOT:
1867{ 3116{
1868 int i; 3117 int i;
1869 3118
1870 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1871 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3119 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1872 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3120 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1873 3121 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3122 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1874 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3123 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1875 SvREADONLY_on (coro_current); 3124 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3125 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3126 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3127 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3128
3129 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3130 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3131 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3132 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1876 3133
1877 coro_stash = gv_stashpv ("Coro", TRUE); 3134 coro_stash = gv_stashpv ("Coro", TRUE);
1878 3135
1879 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1880 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1885 3142
1886 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1887 coro_ready[i] = newAV (); 3144 coro_ready[i] = newAV ();
1888 3145
1889 { 3146 {
1890 SV *sv = perl_get_sv ("Coro::API", TRUE); 3147 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1891 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1892 3148
1893 coroapi.schedule = api_schedule; 3149 coroapi.schedule = api_schedule;
3150 coroapi.schedule_to = api_schedule_to;
1894 coroapi.cede = api_cede; 3151 coroapi.cede = api_cede;
1895 coroapi.cede_notself = api_cede_notself; 3152 coroapi.cede_notself = api_cede_notself;
1896 coroapi.ready = api_ready; 3153 coroapi.ready = api_ready;
1897 coroapi.is_ready = api_is_ready; 3154 coroapi.is_ready = api_is_ready;
1898 coroapi.nready = &coro_nready; 3155 coroapi.nready = coro_nready;
1899 coroapi.current = coro_current; 3156 coroapi.current = coro_current;
1900 3157
1901 GCoroAPI = &coroapi; 3158 /*GCoroAPI = &coroapi;*/
1902 sv_setiv (sv, (IV)&coroapi); 3159 sv_setiv (sv, (IV)&coroapi);
1903 SvREADONLY_on (sv); 3160 SvREADONLY_on (sv);
1904 } 3161 }
1905} 3162}
3163
3164void
3165terminate (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3168
3169void
3170schedule (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3173
3174void
3175schedule_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3178
3179void
3180cede_to (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3183
3184void
3185cede (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede);
3188
3189void
3190cede_notself (...)
3191 CODE:
3192 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3193
3194void
3195_cancel (Coro::State self)
3196 CODE:
3197 coro_state_destroy (aTHX_ self);
3198 coro_call_on_destroy (aTHX_ self);
1906 3199
1907void 3200void
1908_set_current (SV *current) 3201_set_current (SV *current)
1909 PROTOTYPE: $ 3202 PROTOTYPE: $
1910 CODE: 3203 CODE:
1911 SvREFCNT_dec (SvRV (coro_current)); 3204 SvREFCNT_dec (SvRV (coro_current));
1912 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3205 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1913 3206
1914void 3207void
1915_set_readyhook (SV *hook) 3208_set_readyhook (SV *hook)
1916 PROTOTYPE: $ 3209 PROTOTYPE: $
1917 CODE: 3210 CODE:
1918 LOCK;
1919 SvREFCNT_dec (coro_readyhook); 3211 SvREFCNT_dec (coro_readyhook);
1920 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3212 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1921 UNLOCK;
1922 3213
1923int 3214int
1924prio (Coro::State coro, int newprio = 0) 3215prio (Coro::State coro, int newprio = 0)
3216 PROTOTYPE: $;$
1925 ALIAS: 3217 ALIAS:
1926 nice = 1 3218 nice = 1
1927 CODE: 3219 CODE:
1928{ 3220{
1929 RETVAL = coro->prio; 3221 RETVAL = coro->prio;
… …
1944 3236
1945SV * 3237SV *
1946ready (SV *self) 3238ready (SV *self)
1947 PROTOTYPE: $ 3239 PROTOTYPE: $
1948 CODE: 3240 CODE:
1949 RETVAL = boolSV (api_ready (self)); 3241 RETVAL = boolSV (api_ready (aTHX_ self));
1950 OUTPUT: 3242 OUTPUT:
1951 RETVAL 3243 RETVAL
1952 3244
1953int 3245int
1954nready (...) 3246nready (...)
… …
1957 RETVAL = coro_nready; 3249 RETVAL = coro_nready;
1958 OUTPUT: 3250 OUTPUT:
1959 RETVAL 3251 RETVAL
1960 3252
1961void 3253void
1962throw (Coro::State self, SV *throw = &PL_sv_undef) 3254_pool_handler (...)
3255 CODE:
3256 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3257
3258void
3259async_pool (SV *cv, ...)
1963 PROTOTYPE: $;$ 3260 PROTOTYPE: &@
3261 PPCODE:
3262{
3263 HV *hv = (HV *)av_pop (av_async_pool);
3264 AV *av = newAV ();
3265 SV *cb = ST (0);
3266 int i;
3267
3268 av_extend (av, items - 2);
3269 for (i = 1; i < items; ++i)
3270 av_push (av, SvREFCNT_inc_NN (ST (i)));
3271
3272 if ((SV *)hv == &PL_sv_undef)
3273 {
3274 PUSHMARK (SP);
3275 EXTEND (SP, 2);
3276 PUSHs (sv_Coro);
3277 PUSHs ((SV *)cv_pool_handler);
3278 PUTBACK;
3279 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3280 SPAGAIN;
3281
3282 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3283 }
3284
3285 {
3286 struct coro *coro = SvSTATE_hv (hv);
3287
3288 assert (!coro->invoke_cb);
3289 assert (!coro->invoke_av);
3290 coro->invoke_cb = SvREFCNT_inc (cb);
3291 coro->invoke_av = av;
3292 }
3293
3294 api_ready (aTHX_ (SV *)hv);
3295
3296 if (GIMME_V != G_VOID)
3297 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3298 else
3299 SvREFCNT_dec (hv);
3300}
3301
3302SV *
3303rouse_cb ()
3304 PROTOTYPE:
3305 CODE:
3306 RETVAL = coro_new_rouse_cb (aTHX);
3307 OUTPUT:
3308 RETVAL
3309
3310void
3311rouse_wait (...)
3312 PROTOTYPE: ;$
3313 PPCODE:
3314 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3315
3316
3317MODULE = Coro::State PACKAGE = PerlIO::cede
3318
3319BOOT:
3320 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3321
3322
3323MODULE = Coro::State PACKAGE = Coro::Semaphore
3324
3325SV *
3326new (SV *klass, SV *count = 0)
3327 CODE:
3328 RETVAL = sv_bless (
3329 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3330 GvSTASH (CvGV (cv))
3331 );
3332 OUTPUT:
3333 RETVAL
3334
3335# helper for Coro::Channel
3336SV *
3337_alloc (int count)
3338 CODE:
3339 RETVAL = coro_waitarray_new (aTHX_ count);
3340 OUTPUT:
3341 RETVAL
3342
3343SV *
3344count (SV *self)
3345 CODE:
3346 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3347 OUTPUT:
3348 RETVAL
3349
3350void
3351up (SV *self, int adjust = 1)
3352 ALIAS:
3353 adjust = 1
1964 CODE: 3354 CODE:
1965 SvREFCNT_dec (self->throw); 3355 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1966 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1967 3356
1968void 3357void
1969swap_defsv (Coro::State self) 3358down (...)
1970 PROTOTYPE: $
1971 ALIAS:
1972 swap_defav = 1
1973 CODE: 3359 CODE:
1974 if (!self->slot) 3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
1975 croak ("cannot swap state with coroutine that has no saved state"); 3361
3362void
3363wait (...)
3364 CODE:
3365 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3366
3367void
3368try (SV *self)
3369 PPCODE:
3370{
3371 AV *av = (AV *)SvRV (self);
3372 SV *count_sv = AvARRAY (av)[0];
3373 IV count = SvIVX (count_sv);
3374
3375 if (count > 0)
3376 {
3377 --count;
3378 SvIVX (count_sv) = count;
3379 XSRETURN_YES;
3380 }
3381 else
3382 XSRETURN_NO;
3383}
3384
3385void
3386waiters (SV *self)
3387 PPCODE:
3388{
3389 AV *av = (AV *)SvRV (self);
3390 int wcount = AvFILLp (av) + 1 - 1;
3391
3392 if (GIMME_V == G_SCALAR)
3393 XPUSHs (sv_2mortal (newSViv (wcount)));
1976 else 3394 else
1977 { 3395 {
1978 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3396 int i;
1979 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3397 EXTEND (SP, wcount);
1980 3398 for (i = 1; i <= wcount; ++i)
1981 SV *tmp = *src; *src = *dst; *dst = tmp; 3399 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
1982 } 3400 }
3401}
1983 3402
1984# for async_pool speedup 3403MODULE = Coro::State PACKAGE = Coro::Signal
3404
3405SV *
3406new (SV *klass)
3407 CODE:
3408 RETVAL = sv_bless (
3409 coro_waitarray_new (aTHX_ 0),
3410 GvSTASH (CvGV (cv))
3411 );
3412 OUTPUT:
3413 RETVAL
3414
1985void 3415void
1986_pool_1 (SV *cb) 3416wait (...)
1987 CODE: 3417 CODE:
1988{ 3418 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
1989 struct coro *coro = SvSTATE (coro_current);
1990 HV *hv = (HV *)SvRV (coro_current);
1991 AV *defav = GvAV (PL_defgv);
1992 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1993 AV *invoke_av;
1994 int i, len;
1995
1996 if (!invoke)
1997 {
1998 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1999 croak ("\3async_pool terminate\2\n");
2000 }
2001
2002 SvREFCNT_dec (coro->saved_deffh);
2003 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2004
2005 hv_store (hv, "desc", sizeof ("desc") - 1,
2006 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2007
2008 invoke_av = (AV *)SvRV (invoke);
2009 len = av_len (invoke_av);
2010
2011 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2012
2013 if (len > 0)
2014 {
2015 av_fill (defav, len - 1);
2016 for (i = 0; i < len; ++i)
2017 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2018 }
2019
2020 SvREFCNT_dec (invoke);
2021}
2022 3419
2023void 3420void
2024_pool_2 (SV *cb) 3421broadcast (SV *self)
3422 CODE:
3423{
3424 AV *av = (AV *)SvRV (self);
3425 coro_signal_wake (aTHX_ av, AvFILLp (av));
3426}
3427
3428void
3429send (SV *self)
3430 CODE:
3431{
3432 AV *av = (AV *)SvRV (self);
3433
3434 if (AvFILLp (av))
3435 coro_signal_wake (aTHX_ av, 1);
3436 else
3437 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3438}
3439
3440IV
3441awaited (SV *self)
2025 CODE: 3442 CODE:
2026{ 3443 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
2027 struct coro *coro = SvSTATE (coro_current);
2028
2029 sv_setsv (cb, &PL_sv_undef);
2030
2031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2032 coro->saved_deffh = 0;
2033
2034 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2036 {
2037 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
2038 croak ("\3async_pool terminate\2\n");
2039 }
2040
2041 av_clear (GvAV (PL_defgv));
2042 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2043 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2044
2045 coro->prio = 0;
2046
2047 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2048 api_trace (coro_current, 0);
2049
2050 av_push (av_async_pool, newSVsv (coro_current));
2051}
2052
2053
2054MODULE = Coro::State PACKAGE = Coro::AIO
2055
2056SV *
2057_get_state ()
2058 CODE:
2059{
2060 struct io_state *data;
2061
2062 RETVAL = newSV (sizeof (struct io_state));
2063 data = (struct io_state *)SvPVX (RETVAL);
2064 SvCUR_set (RETVAL, sizeof (struct io_state));
2065 SvPOK_only (RETVAL);
2066
2067 data->errorno = errno;
2068 data->laststype = PL_laststype;
2069 data->laststatval = PL_laststatval;
2070 data->statcache = PL_statcache;
2071}
2072 OUTPUT: 3444 OUTPUT:
2073 RETVAL 3445 RETVAL
2074 3446
2075void
2076_set_state (char *data_)
2077 PROTOTYPE: $
2078 CODE:
2079{
2080 struct io_state *data = (void *)data_;
2081
2082 errno = data->errorno;
2083 PL_laststype = data->laststype;
2084 PL_laststatval = data->laststatval;
2085 PL_statcache = data->statcache;
2086}
2087
2088 3447
2089MODULE = Coro::State PACKAGE = Coro::AnyEvent 3448MODULE = Coro::State PACKAGE = Coro::AnyEvent
2090 3449
2091BOOT: 3450BOOT:
2092 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3451 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2093 3452
2094SV * 3453void
2095_schedule (...) 3454_schedule (...)
2096 PROTOTYPE: @
2097 CODE: 3455 CODE:
2098{ 3456{
2099 static int incede; 3457 static int incede;
2100 3458
2101 api_cede_notself (); 3459 api_cede_notself (aTHX);
2102 3460
2103 ++incede; 3461 ++incede;
2104 while (coro_nready >= incede && api_cede ()) 3462 while (coro_nready >= incede && api_cede (aTHX))
2105 ; 3463 ;
2106 3464
2107 sv_setsv (sv_activity, &PL_sv_undef); 3465 sv_setsv (sv_activity, &PL_sv_undef);
2108 if (coro_nready >= incede) 3466 if (coro_nready >= incede)
2109 { 3467 {
2110 PUSHMARK (SP); 3468 PUSHMARK (SP);
2111 PUTBACK; 3469 PUTBACK;
2112 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3470 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2113 SPAGAIN;
2114 } 3471 }
2115 3472
2116 --incede; 3473 --incede;
2117} 3474}
2118 3475
3476
3477MODULE = Coro::State PACKAGE = Coro::AIO
3478
3479void
3480_register (char *target, char *proto, SV *req)
3481 CODE:
3482{
3483 CV *req_cv = coro_sv_2cv (aTHX_ req);
3484 /* newXSproto doesn't return the CV on 5.8 */
3485 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3486 sv_setpv ((SV *)slf_cv, proto);
3487 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3488}
3489

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