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Comparing Coro/Coro/State.xs (file contents):
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC vs.
Revision 1.344 by root, Mon Dec 15 19:39:40 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
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)
108#endif
103 109
104/* 5.8.7 */ 110/* 5.8.7 */
105#ifndef SvRV_set 111#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 113#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 126#endif
121 127
122/* 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
123 * 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
124#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
133#else 144#else
134# define attribute(x) 145# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
137#endif 148#endif
138 149
139#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147static perl_mutex coro_mutex; 159# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 161# endif
154 162#endif
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164 163
165static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
166 165
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;
167static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 174static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
174static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 184static SV *rv_diehook;
177static SV *rv_warnhook; 185static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
179 187
180/* async_pool helper stuff */ 188/* async_pool helper stuff */
181static SV *sv_pool_rss; 189static SV *sv_pool_rss;
182static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
183static 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;
184 196
185/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
186static SV *sv_activity; 198static SV *sv_activity;
187 199
188static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 210};
199 211
200/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 213typedef struct coro_cctx
214{
202 struct coro_cctx *next; 215 struct coro_cctx *next;
203 216
204 /* the stack */ 217 /* the stack */
205 void *sptr; 218 void *sptr;
206 size_t ssize; 219 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 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 */
211 JMPENV *top_env; 224 JMPENV *top_env;
212 coro_context cctx; 225 coro_context cctx;
213 226
227 U32 gen;
214#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
219 237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 244};
226 245
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 247typedef struct
248{
229 SV *defsv; 249 SV *defsv;
230 AV *defav; 250 AV *defav;
231 SV *errsv; 251 SV *errsv;
232 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
233#define VAR(name,type) type name; 254#define VAR(name,type) type name;
234# include "state.h" 255# include "state.h"
235#undef VAR 256#undef VAR
236} perl_slots; 257} perl_slots;
237 258
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 259#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 260
240/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
241struct coro { 262struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 264 coro_cctx *cctx;
244 265
245 /* process data */ 266 /* state data */
267 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 268 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 269 perl_slots *slot; /* basically the saved sp */
248 270
271 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 272 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 273 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 274 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 275 HV *hv; /* the perl hash associated with this coro, if any */
276 void (*on_destroy)(pTHX_ struct coro *coro);
253 277
254 /* statistics */ 278 /* statistics */
255 int usecount; /* number of transfers to this coro */ 279 int usecount; /* number of transfers to this coro */
256 280
257 /* coro process data */ 281 /* coro process data */
258 int prio; 282 int prio;
259 SV *throw; /* exception to be thrown */ 283 SV *except; /* exception to be thrown */
284 SV *rouse_cb;
260 285
261 /* async_pool */ 286 /* async_pool */
262 SV *saved_deffh; 287 SV *saved_deffh;
288 SV *invoke_cb;
289 AV *invoke_av;
290
291 /* on_enter/on_leave */
292 AV *on_enter;
293 AV *on_leave;
263 294
264 /* linked list */ 295 /* linked list */
265 struct coro *next, *prev; 296 struct coro *next, *prev;
266}; 297};
267 298
268typedef struct coro *Coro__State; 299typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 300typedef struct coro *Coro__State_or_hashref;
301
302/* the following variables are effectively part of the perl context */
303/* and get copied between struct coro and these variables */
304/* the mainr easonw e don't support windows process emulation */
305static struct CoroSLF slf_frame; /* the current slf frame */
270 306
271/** Coro ********************************************************************/ 307/** Coro ********************************************************************/
272 308
273#define PRIO_MAX 3 309#define PRIO_MAX 3
274#define PRIO_HIGH 1 310#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 314#define PRIO_MIN -4
279 315
280/* for Coro.pm */ 316/* for Coro.pm */
281static SV *coro_current; 317static SV *coro_current;
282static SV *coro_readyhook; 318static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 319static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready; 320static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 321static struct coro *coro_first;
322#define coro_nready coroapi.nready
286 323
287/** lowlevel stuff **********************************************************/ 324/** lowlevel stuff **********************************************************/
288 325
289static SV * 326static SV *
290coro_get_sv (pTHX_ const char *name, int create) 327coro_get_sv (pTHX_ const char *name, int create)
… …
314 get_hv (name, create); 351 get_hv (name, create);
315#endif 352#endif
316 return get_hv (name, create); 353 return get_hv (name, create);
317} 354}
318 355
356/* may croak */
357INLINE CV *
358coro_sv_2cv (pTHX_ SV *sv)
359{
360 HV *st;
361 GV *gvp;
362 CV *cv = sv_2cv (sv, &st, &gvp, 0);
363
364 if (!cv)
365 croak ("code reference expected");
366
367 return cv;
368}
369
370/*****************************************************************************/
371/* magic glue */
372
373#define CORO_MAGIC_type_cv 26
374#define CORO_MAGIC_type_state PERL_MAGIC_ext
375
376#define CORO_MAGIC_NN(sv, type) \
377 (expect_true (SvMAGIC (sv)->mg_type == type) \
378 ? SvMAGIC (sv) \
379 : mg_find (sv, type))
380
381#define CORO_MAGIC(sv, type) \
382 (expect_true (SvMAGIC (sv)) \
383 ? CORO_MAGIC_NN (sv, type) \
384 : 0)
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
388
389INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414
415/* faster than SvSTATE, but expects a coroutine hv */
416#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
417#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418
419/*****************************************************************************/
420/* padlist management and caching */
421
319static AV * 422static AV *
320coro_clone_padlist (pTHX_ CV *cv) 423coro_derive_padlist (pTHX_ CV *cv)
321{ 424{
322 AV *padlist = CvPADLIST (cv); 425 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 426 AV *newpadlist, *newpad;
324 427
325 newpadlist = newAV (); 428 newpadlist = newAV ();
… …
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 433 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
331#endif 434#endif
332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 435 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
333 --AvFILLp (padlist); 436 --AvFILLp (padlist);
334 437
335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 438 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
336 av_store (newpadlist, 1, (SV *)newpad); 439 av_store (newpadlist, 1, (SV *)newpad);
337 440
338 return newpadlist; 441 return newpadlist;
339} 442}
340 443
341static void 444static void
342free_padlist (pTHX_ AV *padlist) 445free_padlist (pTHX_ AV *padlist)
343{ 446{
344 /* may be during global destruction */ 447 /* may be during global destruction */
345 if (SvREFCNT (padlist)) 448 if (!IN_DESTRUCT)
346 { 449 {
347 I32 i = AvFILLp (padlist); 450 I32 i = AvFILLp (padlist);
348 while (i >= 0) 451
452 while (i > 0) /* special-case index 0 */
349 { 453 {
350 SV **svp = av_fetch (padlist, i--, FALSE); 454 /* we try to be extra-careful here */
351 if (svp) 455 AV *av = (AV *)AvARRAY (padlist)[i--];
352 { 456 I32 j = AvFILLp (av);
353 SV *sv; 457
354 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 458 while (j >= 0)
459 SvREFCNT_dec (AvARRAY (av)[j--]);
460
461 AvFILLp (av) = -1;
355 SvREFCNT_dec (sv); 462 SvREFCNT_dec (av);
356
357 SvREFCNT_dec (*svp);
358 }
359 } 463 }
360 464
465 SvREFCNT_dec (AvARRAY (padlist)[0]);
466
467 AvFILLp (padlist) = -1;
361 SvREFCNT_dec ((SV*)padlist); 468 SvREFCNT_dec ((SV*)padlist);
362 } 469 }
363} 470}
364 471
365static int 472static int
… …
374 481
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 482 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 483
377 return 0; 484 return 0;
378} 485}
379
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 486
383static MGVTBL coro_cv_vtbl = { 487static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 488 0, 0, 0, 0,
385 coro_cv_free 489 coro_cv_free
386}; 490};
387
388#define CORO_MAGIC(sv,type) \
389 SvMAGIC (sv) \
390 ? SvMAGIC (sv)->mg_type == type \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
423 491
424/* the next two functions merely cache the padlists */ 492/* the next two functions merely cache the padlists */
425static void 493static void
426get_padlist (pTHX_ CV *cv) 494get_padlist (pTHX_ CV *cv)
427{ 495{
… …
433 else 501 else
434 { 502 {
435#if CORO_PREFER_PERL_FUNCTIONS 503#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 504 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 505 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 506 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 507 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 508 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 509 SvREFCNT_dec (cp);
442#else 510#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 511 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 512#endif
445 } 513 }
446} 514}
447 515
448static void 516static void
… …
455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 523 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
456 524
457 av = (AV *)mg->mg_obj; 525 av = (AV *)mg->mg_obj;
458 526
459 if (expect_false (AvFILLp (av) >= AvMAX (av))) 527 if (expect_false (AvFILLp (av) >= AvMAX (av)))
460 av_extend (av, AvMAX (av) + 1); 528 av_extend (av, AvFILLp (av) + 1);
461 529
462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 530 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
463} 531}
464 532
465/** load & save, init *******************************************************/ 533/** load & save, init *******************************************************/
534
535static void
536on_enterleave_call (pTHX_ SV *cb);
466 537
467static void 538static void
468load_perl (pTHX_ Coro__State c) 539load_perl (pTHX_ Coro__State c)
469{ 540{
470 perl_slots *slot = c->slot; 541 perl_slots *slot = c->slot;
471 c->slot = 0; 542 c->slot = 0;
472 543
473 PL_mainstack = c->mainstack; 544 PL_mainstack = c->mainstack;
474 545
475 GvSV (PL_defgv) = slot->defsv; 546 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav; 547 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv; 548 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv; 549 GvSV (irsgv) = slot->irsgv;
550 GvHV (PL_hintgv) = slot->hinthv;
479 551
480 #define VAR(name,type) PL_ ## name = slot->name; 552 #define VAR(name,type) PL_ ## name = slot->name;
481 # include "state.h" 553 # include "state.h"
482 #undef VAR 554 #undef VAR
483 555
… …
494 CvPADLIST (cv) = (AV *)POPs; 566 CvPADLIST (cv) = (AV *)POPs;
495 } 567 }
496 568
497 PUTBACK; 569 PUTBACK;
498 } 570 }
571
572 slf_frame = c->slf_frame;
573 CORO_THROW = c->except;
574
575 if (expect_false (c->on_enter))
576 {
577 int i;
578
579 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
580 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
581 }
499} 582}
500 583
501static void 584static void
502save_perl (pTHX_ Coro__State c) 585save_perl (pTHX_ Coro__State c)
503{ 586{
587 if (expect_false (c->on_leave))
588 {
589 int i;
590
591 for (i = AvFILLp (c->on_leave); i >= 0; --i)
592 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
593 }
594
595 c->except = CORO_THROW;
596 c->slf_frame = slf_frame;
597
504 { 598 {
505 dSP; 599 dSP;
506 I32 cxix = cxstack_ix; 600 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 601 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 602 PERL_SI *top_si = PL_curstackinfo;
… …
563 c->mainstack = PL_mainstack; 657 c->mainstack = PL_mainstack;
564 658
565 { 659 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 660 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567 661
568 slot->defav = GvAV (PL_defgv); 662 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV; 663 slot->defsv = DEFSV;
570 slot->errsv = ERRSV; 664 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv); 665 slot->irsgv = GvSV (irsgv);
666 slot->hinthv = GvHV (PL_hintgv);
572 667
573 #define VAR(name,type) slot->name = PL_ ## name; 668 #define VAR(name,type) slot->name = PL_ ## name;
574 # include "state.h" 669 # include "state.h"
575 #undef VAR 670 #undef VAR
576 } 671 }
577} 672}
578 673
579/* 674/*
580 * allocate various perl stacks. This is an exact copy 675 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 676 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 677 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 678 * not usually need a lot of stackspace.
584 */ 679 */
585#if CORO_PREFER_PERL_FUNCTIONS 680#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 681# define coro_init_stacks(thx) init_stacks ()
587#else 682#else
588static void 683static void
589coro_init_stacks (pTHX) 684coro_init_stacks (pTHX)
590{ 685{
591 PL_curstackinfo = new_stackinfo(32, 8); 686 PL_curstackinfo = new_stackinfo(32, 8);
… …
628 723
629/* 724/*
630 * destroy the stacks, the callchain etc... 725 * destroy the stacks, the callchain etc...
631 */ 726 */
632static void 727static void
633coro_destroy_stacks (pTHX) 728coro_destruct_stacks (pTHX)
634{ 729{
635 while (PL_curstackinfo->si_next) 730 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 731 PL_curstackinfo = PL_curstackinfo->si_next;
637 732
638 while (PL_curstackinfo) 733 while (PL_curstackinfo)
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 749#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 750 Safefree (PL_retstack);
656#endif 751#endif
657} 752}
658 753
754#define CORO_RSS \
755 rss += sizeof (SYM (curstackinfo)); \
756 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
757 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
758 rss += SYM (tmps_max) * sizeof (SV *); \
759 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
760 rss += SYM (scopestack_max) * sizeof (I32); \
761 rss += SYM (savestack_max) * sizeof (ANY);
762
659static size_t 763static size_t
660coro_rss (pTHX_ struct coro *coro) 764coro_rss (pTHX_ struct coro *coro)
661{ 765{
662 size_t rss = sizeof (*coro); 766 size_t rss = sizeof (*coro);
663 767
664 if (coro->mainstack) 768 if (coro->mainstack)
665 { 769 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 770 if (coro->flags & CF_RUNNING)
670 { 771 {
671 slot = &tmp_slot; 772 #define SYM(sym) PL_ ## sym
672 773 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 774 #undef SYM
676 } 775 }
677 else 776 else
678 slot = coro->slot;
679
680 if (slot)
681 { 777 {
682 rss += sizeof (slot->curstackinfo); 778 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 779 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 780 #undef SYM
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 } 781 }
694 } 782 }
695 783
696 return rss; 784 return rss;
697} 785}
… …
710#endif 798#endif
711 799
712/* 800/*
713 * This overrides the default magic get method of %SIG elements. 801 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 802 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide 803 * and instead of trying to save and restore the hash elements, we just provide
716 * readback here. 804 * readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */ 805 */
721static int 806static int
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 807coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{ 808{
724 const char *s = MgPV_nolen_const (mg); 809 const char *s = MgPV_nolen_const (mg);
… …
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 862 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778 863
779 if (svp) 864 if (svp)
780 { 865 {
781 SV *old = *svp; 866 SV *old = *svp;
782 *svp = newSVsv (sv); 867 *svp = SvOK (sv) ? newSVsv (sv) : 0;
783 SvREFCNT_dec (old); 868 SvREFCNT_dec (old);
784 return 0; 869 return 0;
785 } 870 }
786 } 871 }
787 872
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 873 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 874}
790 875
791static void 876static void
877prepare_nop (pTHX_ struct coro_transfer_args *ta)
878{
879 /* kind of mega-hacky, but works */
880 ta->next = ta->prev = (struct coro *)ta;
881}
882
883static int
884slf_check_nop (pTHX_ struct CoroSLF *frame)
885{
886 return 0;
887}
888
889static int
890slf_check_repeat (pTHX_ struct CoroSLF *frame)
891{
892 return 1;
893}
894
895static UNOP coro_setup_op;
896
897static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 898coro_setup (pTHX_ struct coro *coro)
793{ 899{
794 /* 900 /*
795 * emulate part of the perl startup here. 901 * emulate part of the perl startup here.
796 */ 902 */
… …
798 904
799 PL_runops = RUNOPS_DEFAULT; 905 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling; 906 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL; 907 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0; 908 PL_comppad = 0;
909 PL_comppad_name = 0;
910 PL_comppad_name_fill = 0;
911 PL_comppad_name_floor = 0;
803 PL_curpm = 0; 912 PL_curpm = 0;
804 PL_curpad = 0; 913 PL_curpad = 0;
805 PL_localizing = 0; 914 PL_localizing = 0;
806 PL_dirty = 0; 915 PL_dirty = 0;
807 PL_restartop = 0; 916 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0) 917#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0; 918 PL_parser = 0;
810#endif 919#endif
920 PL_hints = 0;
811 921
812 /* recreate the die/warn hooks */ 922 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 923 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 924 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815 925
816 GvSV (PL_defgv) = newSV (0); 926 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0; 927 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0); 928 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 929 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
930 GvHV (PL_hintgv) = 0;
820 PL_rs = newSVsv (GvSV (irsgv)); 931 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 932 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 933
823 { 934 {
824 dSP; 935 dSP;
825 LOGOP myop; 936 UNOP myop;
826 937
827 Zero (&myop, 1, LOGOP); 938 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 939 myop.op_next = Nullop;
940 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 941 myop.op_flags = OPf_WANT_VOID;
830 942
831 PUSHMARK (SP); 943 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 944 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 945 PUTBACK;
834 PL_op = (OP *)&myop; 946 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 947 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 948 }
838 949
839 /* this newly created coroutine might be run on an existing cctx which most 950 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 951 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 952 */
844 ENTER; 953 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 954 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 955
956 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
957 coro_setup_op.op_next = PL_op;
958 coro_setup_op.op_type = OP_ENTERSUB;
959 coro_setup_op.op_ppaddr = pp_slf;
960 /* no flags etc. required, as an init function won't be called */
961
962 PL_op = (OP *)&coro_setup_op;
963
964 /* copy throw, in case it was set before coro_setup */
965 CORO_THROW = coro->except;
966}
967
847static void 968static void
848coro_destroy (pTHX_ struct coro *coro) 969coro_unwind_stacks (pTHX)
849{ 970{
850 if (!IN_DESTRUCT) 971 if (!IN_DESTRUCT)
851 { 972 {
852 /* restore all saved variables and stuff */ 973 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 974 LEAVE_SCOPE (0);
… …
861 POPSTACK_TO (PL_mainstack); 982 POPSTACK_TO (PL_mainstack);
862 983
863 /* unwind main stack */ 984 /* unwind main stack */
864 dounwind (-1); 985 dounwind (-1);
865 } 986 }
987}
988
989static void
990coro_destruct_perl (pTHX_ struct coro *coro)
991{
992 coro_unwind_stacks (aTHX);
866 993
867 SvREFCNT_dec (GvSV (PL_defgv)); 994 SvREFCNT_dec (GvSV (PL_defgv));
868 SvREFCNT_dec (GvAV (PL_defgv)); 995 SvREFCNT_dec (GvAV (PL_defgv));
869 SvREFCNT_dec (GvSV (PL_errgv)); 996 SvREFCNT_dec (GvSV (PL_errgv));
870 SvREFCNT_dec (PL_defoutgv); 997 SvREFCNT_dec (PL_defoutgv);
871 SvREFCNT_dec (PL_rs); 998 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv)); 999 SvREFCNT_dec (GvSV (irsgv));
1000 SvREFCNT_dec (GvHV (PL_hintgv));
873 1001
874 SvREFCNT_dec (PL_diehook); 1002 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 1003 SvREFCNT_dec (PL_warnhook);
876 1004
877 SvREFCNT_dec (coro->saved_deffh); 1005 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 1006 SvREFCNT_dec (coro->rouse_cb);
1007 SvREFCNT_dec (coro->invoke_cb);
1008 SvREFCNT_dec (coro->invoke_av);
879 1009
880 coro_destroy_stacks (aTHX); 1010 coro_destruct_stacks (aTHX);
881} 1011}
882 1012
883static void 1013INLINE void
884free_coro_mortal (pTHX) 1014free_coro_mortal (pTHX)
885{ 1015{
886 if (expect_true (coro_mortal)) 1016 if (expect_true (coro_mortal))
887 { 1017 {
888 SvREFCNT_dec (coro_mortal); 1018 SvREFCNT_dec (coro_mortal);
… …
893static int 1023static int
894runops_trace (pTHX) 1024runops_trace (pTHX)
895{ 1025{
896 COP *oldcop = 0; 1026 COP *oldcop = 0;
897 int oldcxix = -2; 1027 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 1028
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1029 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 1030 {
903 PERL_ASYNC_CHECK (); 1031 PERL_ASYNC_CHECK ();
904 1032
905 if (cctx->flags & CC_TRACE_ALL) 1033 if (cctx_current->flags & CC_TRACE_ALL)
906 { 1034 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1035 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 1036 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1037 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 1038 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 1039 AV *av = newAV (); /* return values */
912 SV **cb; 1040 SV **cb;
… …
949 1077
950 if (PL_curcop != &PL_compiling) 1078 if (PL_curcop != &PL_compiling)
951 { 1079 {
952 SV **cb; 1080 SV **cb;
953 1081
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1082 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1083 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1084 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1085
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1086 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1087 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1088 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1089 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1090 SV *fullname = sv_2mortal (newSV (0));
964 1091
965 if (isGV (gv)) 1092 if (isGV (gv))
… …
970 SAVETMPS; 1097 SAVETMPS;
971 EXTEND (SP, 3); 1098 EXTEND (SP, 3);
972 PUSHMARK (SP); 1099 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1100 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1101 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1102 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1103 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1104 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1105 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1106 SPAGAIN;
980 FREETMPS; 1107 FREETMPS;
… …
983 } 1110 }
984 1111
985 oldcxix = cxstack_ix; 1112 oldcxix = cxstack_ix;
986 } 1113 }
987 1114
988 if (cctx->flags & CC_TRACE_LINE) 1115 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1116 {
990 dSP; 1117 dSP;
991 1118
992 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1120 ENTER;
… …
1012 1139
1013 TAINT_NOT; 1140 TAINT_NOT;
1014 return 0; 1141 return 0;
1015} 1142}
1016 1143
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1144static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1145
1019/* during execution of a perl program */ 1146static void
1147slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1148{
1149 ta->prev = 0;
1150}
1151
1152static int
1153slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1154{
1155 *frame = cctx_ssl_frame;
1156
1157 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1158}
1159
1160/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1161static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1162cctx_prepare (pTHX)
1022{ 1163{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1164 PL_top_env = &PL_start_env;
1027 1165
1028 if (cctx->flags & CC_TRACE) 1166 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1167 PL_runops = runops_trace;
1030 1168
1031 Zero (&myop, 1, LOGOP); 1169 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1170 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1171 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1172 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1173
1035 PUSHMARK (SP); 1174 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1175 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1176
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1177 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1178 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1179}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1180
1042 SPAGAIN; 1181/* the tail of transfer: execute stuff we can only do after a transfer */
1182INLINE void
1183transfer_tail (pTHX)
1184{
1185 free_coro_mortal (aTHX);
1043} 1186}
1044 1187
1045/* 1188/*
1046 * this is a _very_ stripped down perl interpreter ;) 1189 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1190 */
1048static void 1191static void
1049cctx_run (void *arg) 1192cctx_run (void *arg)
1050{ 1193{
1194#ifdef USE_ITHREADS
1195# if CORO_PTHREAD
1196 PERL_SET_CONTEXT (coro_thx);
1197# endif
1198#endif
1199 {
1051 dTHX; 1200 dTHX;
1052 1201
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1202 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1203 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1204 /* PL_nop = PL_nop->op_next */
1058 1205
1059 /* inject a fake subroutine call to cctx_init */ 1206 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1207 cctx_prepare (aTHX);
1061 1208
1209 /* cctx_run is the alternative tail of transfer() */
1210 transfer_tail (aTHX);
1211
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1212 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1213 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1214 perl_run (PL_curinterp);
1065
1066 /* 1215 /*
1216 * Unfortunately, there is no way to get at the return values of the
1217 * coro body here, as perl_run destroys these
1218 */
1219
1220 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1221 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1222 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1223 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1224 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1225 * coroutine as Coro has no such concept.
1226 * This actually isn't valid with the pthread backend, but OSes requiring
1227 * that backend are too broken to do it in a standards-compliant way.
1072 */ 1228 */
1073 PL_top_env = main_top_env; 1229 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1230 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1231 }
1075} 1232}
1076 1233
1077static coro_cctx * 1234static coro_cctx *
1078cctx_new () 1235cctx_new ()
1079{ 1236{
1080 coro_cctx *cctx; 1237 coro_cctx *cctx;
1238
1239 ++cctx_count;
1240 New (0, cctx, 1, coro_cctx);
1241
1242 cctx->gen = cctx_gen;
1243 cctx->flags = 0;
1244 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1245
1246 return cctx;
1247}
1248
1249/* create a new cctx only suitable as source */
1250static coro_cctx *
1251cctx_new_empty ()
1252{
1253 coro_cctx *cctx = cctx_new ();
1254
1255 cctx->sptr = 0;
1256 coro_create (&cctx->cctx, 0, 0, 0, 0);
1257
1258 return cctx;
1259}
1260
1261/* create a new cctx suitable as destination/running a perl interpreter */
1262static coro_cctx *
1263cctx_new_run ()
1264{
1265 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1266 void *stack_start;
1082 size_t stack_size; 1267 size_t stack_size;
1083 1268
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1269#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1270 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1271 /* mmap supposedly does allocate-on-write for us */
1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1272 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1273
1093 if (cctx->sptr != (void *)-1) 1274 if (cctx->sptr != (void *)-1)
1094 { 1275 {
1095# if CORO_STACKGUARD 1276 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1277 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1278 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1279 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1280 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1281 cctx->flags |= CC_MAPPED;
1101 } 1282 }
1102 else 1283 else
1103#endif 1284#endif
1104 { 1285 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1286 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1287 New (0, cctx->sptr, cctx_stacksize, long);
1107 1288
1108 if (!cctx->sptr) 1289 if (!cctx->sptr)
1109 { 1290 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1291 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1292 _exit (EXIT_FAILURE);
1112 } 1293 }
1113 1294
1114 stack_start = cctx->sptr; 1295 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1296 stack_size = cctx->ssize;
1116 } 1297 }
1117 1298
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1299 #if CORO_USE_VALGRIND
1300 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1301 #endif
1302
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1303 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1304
1121 return cctx; 1305 return cctx;
1122} 1306}
1123 1307
… …
1125cctx_destroy (coro_cctx *cctx) 1309cctx_destroy (coro_cctx *cctx)
1126{ 1310{
1127 if (!cctx) 1311 if (!cctx)
1128 return; 1312 return;
1129 1313
1314 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1315
1130 --cctx_count; 1316 --cctx_count;
1317 coro_destroy (&cctx->cctx);
1131 1318
1319 /* coro_transfer creates new, empty cctx's */
1320 if (cctx->sptr)
1321 {
1132#if CORO_USE_VALGRIND 1322 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1323 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1134#endif 1324 #endif
1135 1325
1136#if HAVE_MMAP 1326#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED) 1327 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize); 1328 munmap (cctx->sptr, cctx->ssize);
1139 else 1329 else
1140#endif 1330#endif
1141 Safefree (cctx->sptr); 1331 Safefree (cctx->sptr);
1332 }
1142 1333
1143 Safefree (cctx); 1334 Safefree (cctx);
1144} 1335}
1145 1336
1146/* wether this cctx should be destructed */ 1337/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1338#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1339
1149static coro_cctx * 1340static coro_cctx *
1150cctx_get (pTHX) 1341cctx_get (pTHX)
1151{ 1342{
1152 while (expect_true (cctx_first)) 1343 while (expect_true (cctx_first))
… …
1159 return cctx; 1350 return cctx;
1160 1351
1161 cctx_destroy (cctx); 1352 cctx_destroy (cctx);
1162 } 1353 }
1163 1354
1164 return cctx_new (); 1355 return cctx_new_run ();
1165} 1356}
1166 1357
1167static void 1358static void
1168cctx_put (coro_cctx *cctx) 1359cctx_put (coro_cctx *cctx)
1169{ 1360{
1361 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1362
1170 /* free another cctx if overlimit */ 1363 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1364 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1365 {
1173 coro_cctx *first = cctx_first; 1366 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1367 cctx_first = first->next;
1175 --cctx_idle; 1368 --cctx_idle;
1176 1369
… …
1185/** coroutine switching *****************************************************/ 1378/** coroutine switching *****************************************************/
1186 1379
1187static void 1380static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1381transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1382{
1383 /* TODO: throwing up here is considered harmful */
1384
1190 if (expect_true (prev != next)) 1385 if (expect_true (prev != next))
1191 { 1386 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1387 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1388 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1194 1389
1195 if (expect_false (next->flags & CF_RUNNING))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1197
1198 if (expect_false (next->flags & CF_DESTROYED)) 1390 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1391 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1200 1392
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1393#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1394 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1395 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1396#endif
1205 } 1397 }
1206} 1398}
1207 1399
1208/* always use the TRANSFER macro */ 1400/* always use the TRANSFER macro */
1209static void NOINLINE 1401static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1402transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1403{
1212 dSTACKLEVEL; 1404 dSTACKLEVEL;
1213 1405
1214 /* sometimes transfer is only called to set idle_sp */ 1406 /* sometimes transfer is only called to set idle_sp */
1215 if (expect_false (!next)) 1407 if (expect_false (!prev))
1216 { 1408 {
1217 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1409 cctx_current->idle_sp = STACKLEVEL;
1218 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1410 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1219 } 1411 }
1220 else if (expect_true (prev != next)) 1412 else if (expect_true (prev != next))
1221 { 1413 {
1222 static volatile int has_throw;
1223 coro_cctx *prev__cctx; 1414 coro_cctx *cctx_prev;
1224 1415
1225 if (expect_false (prev->flags & CF_NEW)) 1416 if (expect_false (prev->flags & CF_NEW))
1226 { 1417 {
1227 /* create a new empty context */ 1418 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx);
1229 prev->flags &= ~CF_NEW; 1419 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1420 prev->flags |= CF_RUNNING;
1231 } 1421 }
1232 1422
1233 prev->flags &= ~CF_RUNNING; 1423 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1424 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1425
1238 /* first get rid of the old state */ 1426 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1427 save_perl (aTHX_ prev);
1240 1428
1241 if (expect_false (next->flags & CF_NEW)) 1429 if (expect_false (next->flags & CF_NEW))
… …
1246 coro_setup (aTHX_ next); 1434 coro_setup (aTHX_ next);
1247 } 1435 }
1248 else 1436 else
1249 load_perl (aTHX_ next); 1437 load_perl (aTHX_ next);
1250 1438
1251 prev__cctx = prev->cctx;
1252
1253 /* possibly "free" the cctx */ 1439 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1440 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1441 cctx_current->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1442 && !(cctx_current->flags & CC_TRACE)
1257 && !force_cctx 1443 && !force_cctx
1258 )) 1444 ))
1259 { 1445 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1446 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1447 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1262 1448
1263 prev->cctx = 0;
1264
1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1449 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1450 /* without this the next cctx_get might destroy the running cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1451 if (expect_false (CCTX_EXPIRED (cctx_current)))
1268 if (!next->cctx) 1452 if (expect_true (!next->cctx))
1269 next->cctx = cctx_get (aTHX); 1453 next->cctx = cctx_get (aTHX);
1270 1454
1271 cctx_put (prev__cctx); 1455 cctx_put (cctx_current);
1272 } 1456 }
1457 else
1458 prev->cctx = cctx_current;
1273 1459
1274 ++next->usecount; 1460 ++next->usecount;
1275 1461
1276 if (expect_true (!next->cctx)) 1462 cctx_prev = cctx_current;
1277 next->cctx = cctx_get (aTHX); 1463 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1278 1464
1279 has_throw = !!next->throw; 1465 next->cctx = 0;
1280 1466
1281 if (expect_false (prev__cctx != next->cctx)) 1467 if (expect_false (cctx_prev != cctx_current))
1282 { 1468 {
1283 prev__cctx->top_env = PL_top_env; 1469 cctx_prev->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1470 PL_top_env = cctx_current->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1471 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1286 } 1472 }
1287 1473
1288 free_coro_mortal (aTHX); 1474 transfer_tail (aTHX);
1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
1303 } 1475 }
1304} 1476}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1477
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1478#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1479#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1480
1314/** high level stuff ********************************************************/ 1481/** high level stuff ********************************************************/
… …
1316static int 1483static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1484coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1485{
1319 if (coro->flags & CF_DESTROYED) 1486 if (coro->flags & CF_DESTROYED)
1320 return 0; 1487 return 0;
1488
1489 if (coro->on_destroy && !PL_dirty)
1490 coro->on_destroy (aTHX_ coro);
1321 1491
1322 coro->flags |= CF_DESTROYED; 1492 coro->flags |= CF_DESTROYED;
1323 1493
1324 if (coro->flags & CF_READY) 1494 if (coro->flags & CF_READY)
1325 { 1495 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1496 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1497 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1498 --coro_nready;
1330 UNLOCK;
1331 } 1499 }
1332 else 1500 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1501 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334 1502
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1503 if (coro->mainstack
1504 && coro->mainstack != main_mainstack
1505 && coro->slot
1506 && !PL_dirty)
1336 { 1507 {
1337 struct coro temp; 1508 struct coro *current = SvSTATE_current;
1338 1509
1339 if (coro->flags & CF_RUNNING) 1510 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341 1511
1342 save_perl (aTHX_ &temp); 1512 save_perl (aTHX_ current);
1343 load_perl (aTHX_ coro); 1513 load_perl (aTHX_ coro);
1344 1514
1345 coro_destroy (aTHX_ coro); 1515 coro_destruct_perl (aTHX_ coro);
1346 1516
1347 load_perl (aTHX_ &temp); 1517 load_perl (aTHX_ current);
1348 1518
1349 coro->slot = 0; 1519 coro->slot = 0;
1350 } 1520 }
1351 1521
1352 cctx_destroy (coro->cctx); 1522 cctx_destroy (coro->cctx);
1523 SvREFCNT_dec (coro->startcv);
1353 SvREFCNT_dec (coro->args); 1524 SvREFCNT_dec (coro->args);
1525 SvREFCNT_dec (CORO_THROW);
1354 1526
1355 if (coro->next) coro->next->prev = coro->prev; 1527 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1528 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1529 if (coro == coro_first) coro_first = coro->next;
1358 1530
… …
1396# define MGf_DUP 0 1568# define MGf_DUP 0
1397#endif 1569#endif
1398}; 1570};
1399 1571
1400static void 1572static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1573prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1574{
1403 ta->prev = SvSTATE (prev_sv); 1575 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1577 TRANSFER_CHECK (*ta);
1406} 1578}
1407 1579
1408static void 1580static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1581api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1582{
1411 dTHX;
1412 struct transfer_args ta; 1583 struct coro_transfer_args ta;
1413 1584
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1585 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1586 TRANSFER (ta, 1);
1416} 1587}
1417 1588
1589/*****************************************************************************/
1590/* gensub: simple closure generation utility */
1591
1592#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1593
1594/* create a closure from XS, returns a code reference */
1595/* the arg can be accessed via GENSUB_ARG from the callback */
1596/* the callback must use dXSARGS/XSRETURN */
1597static SV *
1598gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1599{
1600 CV *cv = (CV *)newSV (0);
1601
1602 sv_upgrade ((SV *)cv, SVt_PVCV);
1603
1604 CvANON_on (cv);
1605 CvISXSUB_on (cv);
1606 CvXSUB (cv) = xsub;
1607 GENSUB_ARG = arg;
1608
1609 return newRV_noinc ((SV *)cv);
1610}
1611
1418/** Coro ********************************************************************/ 1612/** Coro ********************************************************************/
1419 1613
1420static void 1614INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1615coro_enq (pTHX_ struct coro *coro)
1422{ 1616{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1617 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1424} 1618}
1425 1619
1426static SV * 1620INLINE SV *
1427coro_deq (pTHX) 1621coro_deq (pTHX)
1428{ 1622{
1429 int prio; 1623 int prio;
1430 1624
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1625 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1434 1628
1435 return 0; 1629 return 0;
1436} 1630}
1437 1631
1438static int 1632static int
1439api_ready (SV *coro_sv) 1633api_ready (pTHX_ SV *coro_sv)
1440{ 1634{
1441 dTHX;
1442 struct coro *coro; 1635 struct coro *coro;
1443 SV *sv_hook; 1636 SV *sv_hook;
1444 void (*xs_hook)(void); 1637 void (*xs_hook)(void);
1445 1638
1446 if (SvROK (coro_sv))
1447 coro_sv = SvRV (coro_sv);
1448
1449 coro = SvSTATE (coro_sv); 1639 coro = SvSTATE (coro_sv);
1450 1640
1451 if (coro->flags & CF_READY) 1641 if (coro->flags & CF_READY)
1452 return 0; 1642 return 0;
1453 1643
1454 coro->flags |= CF_READY; 1644 coro->flags |= CF_READY;
1455 1645
1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1646 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1647 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460 1648
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1649 coro_enq (aTHX_ coro);
1462 ++coro_nready; 1650 ++coro_nready;
1463 1651
1464 UNLOCK;
1465
1466 if (sv_hook) 1652 if (sv_hook)
1467 { 1653 {
1468 dSP; 1654 dSP;
1469 1655
1470 ENTER; 1656 ENTER;
1471 SAVETMPS; 1657 SAVETMPS;
1472 1658
1473 PUSHMARK (SP); 1659 PUSHMARK (SP);
1474 PUTBACK; 1660 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD); 1661 call_sv (sv_hook, G_VOID | G_DISCARD);
1476 SPAGAIN;
1477 1662
1478 FREETMPS; 1663 FREETMPS;
1479 LEAVE; 1664 LEAVE;
1480 } 1665 }
1481 1666
… …
1484 1669
1485 return 1; 1670 return 1;
1486} 1671}
1487 1672
1488static int 1673static int
1489api_is_ready (SV *coro_sv) 1674api_is_ready (pTHX_ SV *coro_sv)
1490{ 1675{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1676 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1677}
1494 1678
1495static void 1679/* expects to own a reference to next->hv */
1680INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1681prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1497{ 1682{
1498 SV *prev_sv, *next_sv;
1499
1500 for (;;)
1501 {
1502 LOCK;
1503 next_sv = coro_deq (aTHX);
1504
1505 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv))
1507 {
1508 dSP;
1509 UNLOCK;
1510
1511 ENTER;
1512 SAVETMPS;
1513
1514 PUSHMARK (SP);
1515 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1517 SPAGAIN;
1518
1519 FREETMPS;
1520 LEAVE;
1521 continue;
1522 }
1523
1524 ta->next = SvSTATE (next_sv);
1525
1526 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */
1532 continue;
1533 }
1534
1535 --coro_nready;
1536 UNLOCK;
1537 break;
1538 }
1539
1540 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current); 1683 SV *prev_sv = SvRV (coro_current);
1684
1542 ta->prev = SvSTATE (prev_sv); 1685 ta->prev = SvSTATE_hv (prev_sv);
1686 ta->next = next;
1687
1543 TRANSFER_CHECK (*ta); 1688 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1689
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1690 SvRV_set (coro_current, (SV *)next->hv);
1547 1691
1548 LOCK;
1549 free_coro_mortal (aTHX); 1692 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1693 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1694}
1553 1695
1554static void 1696static void
1697prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1698{
1699 for (;;)
1700 {
1701 SV *next_sv = coro_deq (aTHX);
1702
1703 if (expect_true (next_sv))
1704 {
1705 struct coro *next = SvSTATE_hv (next_sv);
1706
1707 /* cannot transfer to destroyed coros, skip and look for next */
1708 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1709 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1710 else
1711 {
1712 next->flags &= ~CF_READY;
1713 --coro_nready;
1714
1715 prepare_schedule_to (aTHX_ ta, next);
1716 break;
1717 }
1718 }
1719 else
1720 {
1721 /* nothing to schedule: call the idle handler */
1722 if (SvROK (sv_idle)
1723 && SvOBJECT (SvRV (sv_idle)))
1724 {
1725 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1726 api_ready (aTHX_ SvRV (sv_idle));
1727 --coro_nready;
1728 }
1729 else
1730 {
1731 dSP;
1732
1733 ENTER;
1734 SAVETMPS;
1735
1736 PUSHMARK (SP);
1737 PUTBACK;
1738 call_sv (sv_idle, G_VOID | G_DISCARD);
1739
1740 FREETMPS;
1741 LEAVE;
1742 }
1743 }
1744 }
1745}
1746
1747INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1748prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1749{
1557 api_ready (coro_current); 1750 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1751 prepare_schedule (aTHX_ ta);
1559} 1752}
1560 1753
1754INLINE void
1755prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1756{
1757 SV *prev = SvRV (coro_current);
1758
1759 if (coro_nready)
1760 {
1761 prepare_schedule (aTHX_ ta);
1762 api_ready (aTHX_ prev);
1763 }
1764 else
1765 prepare_nop (aTHX_ ta);
1766}
1767
1768static void
1769api_schedule (pTHX)
1770{
1771 struct coro_transfer_args ta;
1772
1773 prepare_schedule (aTHX_ &ta);
1774 TRANSFER (ta, 1);
1775}
1776
1777static void
1778api_schedule_to (pTHX_ SV *coro_sv)
1779{
1780 struct coro_transfer_args ta;
1781 struct coro *next = SvSTATE (coro_sv);
1782
1783 SvREFCNT_inc_NN (coro_sv);
1784 prepare_schedule_to (aTHX_ &ta, next);
1785}
1786
1561static int 1787static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1788api_cede (pTHX)
1563{ 1789{
1564 if (coro_nready) 1790 struct coro_transfer_args ta;
1565 { 1791
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1792 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1793
1794 if (expect_true (ta.prev != ta.next))
1795 {
1796 TRANSFER (ta, 1);
1569 return 1; 1797 return 1;
1570 } 1798 }
1571 else 1799 else
1572 return 0; 1800 return 0;
1573} 1801}
1574 1802
1575static void
1576api_schedule (void)
1577{
1578 dTHX;
1579 struct transfer_args ta;
1580
1581 prepare_schedule (aTHX_ &ta);
1582 TRANSFER (ta, 1);
1583}
1584
1585static int 1803static int
1586api_cede (void) 1804api_cede_notself (pTHX)
1587{ 1805{
1588 dTHX; 1806 if (coro_nready)
1807 {
1589 struct transfer_args ta; 1808 struct coro_transfer_args ta;
1590 1809
1591 prepare_cede (aTHX_ &ta); 1810 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1811 TRANSFER (ta, 1);
1596 return 1; 1812 return 1;
1597 } 1813 }
1598 else 1814 else
1599 return 0; 1815 return 0;
1600} 1816}
1601 1817
1602static int 1818static void
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags) 1819api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1820{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1821 struct coro *coro = SvSTATE (coro_sv);
1622 1822
1823 if (coro->flags & CF_RUNNING)
1824 croak ("cannot enable tracing on a running coroutine, caught");
1825
1623 if (flags & CC_TRACE) 1826 if (flags & CC_TRACE)
1624 { 1827 {
1625 if (!coro->cctx) 1828 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1829 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1830 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1831 croak ("cannot enable tracing on coroutine with custom stack, caught");
1629 1832
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1833 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1834 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1835 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1836 {
… …
1638 else 1841 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 1842 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 1843 }
1641} 1844}
1642 1845
1846static void
1847coro_call_on_destroy (pTHX_ struct coro *coro)
1848{
1849 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1850 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1851
1852 if (on_destroyp)
1853 {
1854 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1855
1856 while (AvFILLp (on_destroy) >= 0)
1857 {
1858 dSP; /* don't disturb outer sp */
1859 SV *cb = av_pop (on_destroy);
1860
1861 PUSHMARK (SP);
1862
1863 if (statusp)
1864 {
1865 int i;
1866 AV *status = (AV *)SvRV (*statusp);
1867 EXTEND (SP, AvFILLp (status) + 1);
1868
1869 for (i = 0; i <= AvFILLp (status); ++i)
1870 PUSHs (AvARRAY (status)[i]);
1871 }
1872
1873 PUTBACK;
1874 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1875 }
1876 }
1877}
1878
1879static void
1880slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1881{
1882 int i;
1883 HV *hv = (HV *)SvRV (coro_current);
1884 AV *av = newAV ();
1885
1886 av_extend (av, items - 1);
1887 for (i = 0; i < items; ++i)
1888 av_push (av, SvREFCNT_inc_NN (arg [i]));
1889
1890 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1891
1892 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1893 api_ready (aTHX_ sv_manager);
1894
1895 frame->prepare = prepare_schedule;
1896 frame->check = slf_check_repeat;
1897
1898 /* as a minor optimisation, we could unwind all stacks here */
1899 /* but that puts extra pressure on pp_slf, and is not worth much */
1900 /*coro_unwind_stacks (aTHX);*/
1901}
1902
1903/*****************************************************************************/
1904/* async pool handler */
1905
1643static int 1906static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1907slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1645{ 1908{
1646 AV *padlist; 1909 HV *hv = (HV *)SvRV (coro_current);
1647 AV *av = (AV *)mg->mg_obj; 1910 struct coro *coro = (struct coro *)frame->data;
1648 1911
1649 abort (); 1912 if (!coro->invoke_cb)
1913 return 1; /* loop till we have invoke */
1914 else
1915 {
1916 hv_store (hv, "desc", sizeof ("desc") - 1,
1917 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1918
1919 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1920
1921 {
1922 dSP;
1923 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1924 PUTBACK;
1925 }
1926
1927 SvREFCNT_dec (GvAV (PL_defgv));
1928 GvAV (PL_defgv) = coro->invoke_av;
1929 coro->invoke_av = 0;
1930
1931 return 0;
1932 }
1933}
1934
1935static void
1936slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1937{
1938 HV *hv = (HV *)SvRV (coro_current);
1939 struct coro *coro = SvSTATE_hv ((SV *)hv);
1940
1941 if (expect_true (coro->saved_deffh))
1942 {
1943 /* subsequent iteration */
1944 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1945 coro->saved_deffh = 0;
1946
1947 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1948 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1949 {
1950 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1951 coro->invoke_av = newAV ();
1952
1953 frame->prepare = prepare_nop;
1954 }
1955 else
1956 {
1957 av_clear (GvAV (PL_defgv));
1958 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1959
1960 coro->prio = 0;
1961
1962 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1963 api_trace (aTHX_ coro_current, 0);
1964
1965 frame->prepare = prepare_schedule;
1966 av_push (av_async_pool, SvREFCNT_inc (hv));
1967 }
1968 }
1969 else
1970 {
1971 /* first iteration, simply fall through */
1972 frame->prepare = prepare_nop;
1973 }
1974
1975 frame->check = slf_check_pool_handler;
1976 frame->data = (void *)coro;
1977}
1978
1979/*****************************************************************************/
1980/* rouse callback */
1981
1982#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1983
1984static void
1985coro_rouse_callback (pTHX_ CV *cv)
1986{
1987 dXSARGS;
1988 SV *data = (SV *)GENSUB_ARG;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 {
1992 /* first call, set args */
1993 AV *av = newAV ();
1994 SV *coro = SvRV (data);
1995
1996 SvRV_set (data, (SV *)av);
1997 api_ready (aTHX_ coro);
1998 SvREFCNT_dec (coro);
1999
2000 /* better take a full copy of the arguments */
2001 while (items--)
2002 av_store (av, items, newSVsv (ST (items)));
2003 }
2004
2005 XSRETURN_EMPTY;
2006}
2007
2008static int
2009slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2010{
2011 SV *data = (SV *)frame->data;
2012
2013 if (CORO_THROW)
2014 return 0;
2015
2016 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2017 return 1;
2018
2019 /* now push all results on the stack */
2020 {
2021 dSP;
2022 AV *av = (AV *)SvRV (data);
2023 int i;
2024
2025 EXTEND (SP, AvFILLp (av) + 1);
2026 for (i = 0; i <= AvFILLp (av); ++i)
2027 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2028
2029 /* we have stolen the elements, so ste length to zero and free */
2030 AvFILLp (av) = -1;
2031 av_undef (av);
2032
2033 PUTBACK;
2034 }
1650 2035
1651 return 0; 2036 return 0;
1652} 2037}
1653 2038
1654static MGVTBL coro_gensub_vtbl = { 2039static void
1655 0, 0, 0, 0, 2040slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 2041{
1657}; 2042 SV *cb;
2043
2044 if (items)
2045 cb = arg [0];
2046 else
2047 {
2048 struct coro *coro = SvSTATE_current;
2049
2050 if (!coro->rouse_cb)
2051 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2052
2053 cb = sv_2mortal (coro->rouse_cb);
2054 coro->rouse_cb = 0;
2055 }
2056
2057 if (!SvROK (cb)
2058 || SvTYPE (SvRV (cb)) != SVt_PVCV
2059 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2060 croak ("Coro::rouse_wait called with illegal callback argument,");
2061
2062 {
2063 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2064 SV *data = (SV *)GENSUB_ARG;
2065
2066 frame->data = (void *)data;
2067 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2068 frame->check = slf_check_rouse_wait;
2069 }
2070}
2071
2072static SV *
2073coro_new_rouse_cb (pTHX)
2074{
2075 HV *hv = (HV *)SvRV (coro_current);
2076 struct coro *coro = SvSTATE_hv (hv);
2077 SV *data = newRV_inc ((SV *)hv);
2078 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2079
2080 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2081 SvREFCNT_dec (data); /* magicext increases the refcount */
2082
2083 SvREFCNT_dec (coro->rouse_cb);
2084 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2085
2086 return cb;
2087}
2088
2089/*****************************************************************************/
2090/* schedule-like-function opcode (SLF) */
2091
2092static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2093static const CV *slf_cv;
2094static SV **slf_argv;
2095static int slf_argc, slf_arga; /* count, allocated */
2096static I32 slf_ax; /* top of stack, for restore */
2097
2098/* this restores the stack in the case we patched the entersub, to */
2099/* recreate the stack frame as perl will on following calls */
2100/* since entersub cleared the stack */
2101static OP *
2102pp_restore (pTHX)
2103{
2104 int i;
2105 SV **SP = PL_stack_base + slf_ax;
2106
2107 PUSHMARK (SP);
2108
2109 EXTEND (SP, slf_argc + 1);
2110
2111 for (i = 0; i < slf_argc; ++i)
2112 PUSHs (sv_2mortal (slf_argv [i]));
2113
2114 PUSHs ((SV *)CvGV (slf_cv));
2115
2116 RETURNOP (slf_restore.op_first);
2117}
2118
2119static void
2120slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2121{
2122 SV **arg = (SV **)slf_frame.data;
2123
2124 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2125}
2126
2127static void
2128slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 if (items != 2)
2131 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2132
2133 frame->prepare = slf_prepare_transfer;
2134 frame->check = slf_check_nop;
2135 frame->data = (void *)arg; /* let's hope it will stay valid */
2136}
2137
2138static void
2139slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2140{
2141 frame->prepare = prepare_schedule;
2142 frame->check = slf_check_nop;
2143}
2144
2145static void
2146slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2147{
2148 struct coro *next = (struct coro *)slf_frame.data;
2149
2150 SvREFCNT_inc_NN (next->hv);
2151 prepare_schedule_to (aTHX_ ta, next);
2152}
2153
2154static void
2155slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 if (!items)
2158 croak ("Coro::schedule_to expects a coroutine argument, caught");
2159
2160 frame->data = (void *)SvSTATE (arg [0]);
2161 frame->prepare = slf_prepare_schedule_to;
2162 frame->check = slf_check_nop;
2163}
2164
2165static void
2166slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2167{
2168 api_ready (aTHX_ SvRV (coro_current));
2169
2170 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2171}
2172
2173static void
2174slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2175{
2176 frame->prepare = prepare_cede;
2177 frame->check = slf_check_nop;
2178}
2179
2180static void
2181slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2182{
2183 frame->prepare = prepare_cede_notself;
2184 frame->check = slf_check_nop;
2185}
2186
2187/*
2188 * these not obviously related functions are all rolled into one
2189 * function to increase chances that they all will call transfer with the same
2190 * stack offset
2191 * SLF stands for "schedule-like-function".
2192 */
2193static OP *
2194pp_slf (pTHX)
2195{
2196 I32 checkmark; /* mark SP to see how many elements check has pushed */
2197
2198 /* set up the slf frame, unless it has already been set-up */
2199 /* the latter happens when a new coro has been started */
2200 /* or when a new cctx was attached to an existing coroutine */
2201 if (expect_true (!slf_frame.prepare))
2202 {
2203 /* first iteration */
2204 dSP;
2205 SV **arg = PL_stack_base + TOPMARK + 1;
2206 int items = SP - arg; /* args without function object */
2207 SV *gv = *sp;
2208
2209 /* do a quick consistency check on the "function" object, and if it isn't */
2210 /* for us, divert to the real entersub */
2211 if (SvTYPE (gv) != SVt_PVGV
2212 || !GvCV (gv)
2213 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2214 return PL_ppaddr[OP_ENTERSUB](aTHX);
2215
2216 if (!(PL_op->op_flags & OPf_STACKED))
2217 {
2218 /* ampersand-form of call, use @_ instead of stack */
2219 AV *av = GvAV (PL_defgv);
2220 arg = AvARRAY (av);
2221 items = AvFILLp (av) + 1;
2222 }
2223
2224 /* now call the init function, which needs to set up slf_frame */
2225 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2226 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2227
2228 /* pop args */
2229 SP = PL_stack_base + POPMARK;
2230
2231 PUTBACK;
2232 }
2233
2234 /* now that we have a slf_frame, interpret it! */
2235 /* we use a callback system not to make the code needlessly */
2236 /* complicated, but so we can run multiple perl coros from one cctx */
2237
2238 do
2239 {
2240 struct coro_transfer_args ta;
2241
2242 slf_frame.prepare (aTHX_ &ta);
2243 TRANSFER (ta, 0);
2244
2245 checkmark = PL_stack_sp - PL_stack_base;
2246 }
2247 while (slf_frame.check (aTHX_ &slf_frame));
2248
2249 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2250
2251 /* exception handling */
2252 if (expect_false (CORO_THROW))
2253 {
2254 SV *exception = sv_2mortal (CORO_THROW);
2255
2256 CORO_THROW = 0;
2257 sv_setsv (ERRSV, exception);
2258 croak (0);
2259 }
2260
2261 /* return value handling - mostly like entersub */
2262 /* make sure we put something on the stack in scalar context */
2263 if (GIMME_V == G_SCALAR)
2264 {
2265 dSP;
2266 SV **bot = PL_stack_base + checkmark;
2267
2268 if (sp == bot) /* too few, push undef */
2269 bot [1] = &PL_sv_undef;
2270 else if (sp != bot + 1) /* too many, take last one */
2271 bot [1] = *sp;
2272
2273 SP = bot + 1;
2274
2275 PUTBACK;
2276 }
2277
2278 return NORMAL;
2279}
2280
2281static void
2282api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2283{
2284 int i;
2285 SV **arg = PL_stack_base + ax;
2286 int items = PL_stack_sp - arg + 1;
2287
2288 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2289
2290 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2291 && PL_op->op_ppaddr != pp_slf)
2292 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2293
2294 CvFLAGS (cv) |= CVf_SLF;
2295 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2296 slf_cv = cv;
2297
2298 /* we patch the op, and then re-run the whole call */
2299 /* we have to put the same argument on the stack for this to work */
2300 /* and this will be done by pp_restore */
2301 slf_restore.op_next = (OP *)&slf_restore;
2302 slf_restore.op_type = OP_CUSTOM;
2303 slf_restore.op_ppaddr = pp_restore;
2304 slf_restore.op_first = PL_op;
2305
2306 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2307
2308 if (PL_op->op_flags & OPf_STACKED)
2309 {
2310 if (items > slf_arga)
2311 {
2312 slf_arga = items;
2313 free (slf_argv);
2314 slf_argv = malloc (slf_arga * sizeof (SV *));
2315 }
2316
2317 slf_argc = items;
2318
2319 for (i = 0; i < items; ++i)
2320 slf_argv [i] = SvREFCNT_inc (arg [i]);
2321 }
2322 else
2323 slf_argc = 0;
2324
2325 PL_op->op_ppaddr = pp_slf;
2326 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2327
2328 PL_op = (OP *)&slf_restore;
2329}
2330
2331/*****************************************************************************/
2332/* dynamic wind */
2333
2334static void
2335on_enterleave_call (pTHX_ SV *cb)
2336{
2337 dSP;
2338
2339 PUSHSTACK;
2340
2341 PUSHMARK (SP);
2342 PUTBACK;
2343 call_sv (cb, G_VOID | G_DISCARD);
2344 SPAGAIN;
2345
2346 POPSTACK;
2347}
2348
2349static SV *
2350coro_avp_pop_and_free (pTHX_ AV **avp)
2351{
2352 AV *av = *avp;
2353 SV *res = av_pop (av);
2354
2355 if (AvFILLp (av) < 0)
2356 {
2357 *avp = 0;
2358 SvREFCNT_dec (av);
2359 }
2360
2361 return res;
2362}
2363
2364static void
2365coro_pop_on_enter (pTHX_ void *coro)
2366{
2367 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2368 SvREFCNT_dec (cb);
2369}
2370
2371static void
2372coro_pop_on_leave (pTHX_ void *coro)
2373{
2374 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2375 on_enterleave_call (aTHX_ sv_2mortal (cb));
2376}
1658 2377
1659/*****************************************************************************/ 2378/*****************************************************************************/
1660/* PerlIO::cede */ 2379/* PerlIO::cede */
1661 2380
1662typedef struct 2381typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2409 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2410 double now = nvtime ();
1692 2411
1693 if (now >= self->next) 2412 if (now >= self->next)
1694 { 2413 {
1695 api_cede (); 2414 api_cede (aTHX);
1696 self->next = now + self->every; 2415 self->next = now + self->every;
1697 } 2416 }
1698 2417
1699 return PerlIOBuf_flush (aTHX_ f); 2418 return PerlIOBuf_flush (aTHX_ f);
1700} 2419}
… …
1729 PerlIOBuf_get_ptr, 2448 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2449 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2450 PerlIOBuf_set_ptrcnt,
1732}; 2451};
1733 2452
2453/*****************************************************************************/
2454/* Coro::Semaphore & Coro::Signal */
2455
2456static SV *
2457coro_waitarray_new (pTHX_ int count)
2458{
2459 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2460 AV *av = newAV ();
2461 SV **ary;
2462
2463 /* unfortunately, building manually saves memory */
2464 Newx (ary, 2, SV *);
2465 AvALLOC (av) = ary;
2466#if PERL_VERSION_ATLEAST (5,10,0)
2467 AvARRAY (av) = ary;
2468#else
2469 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2470 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2471 SvPVX ((SV *)av) = (char *)ary;
2472#endif
2473 AvMAX (av) = 1;
2474 AvFILLp (av) = 0;
2475 ary [0] = newSViv (count);
2476
2477 return newRV_noinc ((SV *)av);
2478}
2479
2480/* semaphore */
2481
2482static void
2483coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2484{
2485 SV *count_sv = AvARRAY (av)[0];
2486 IV count = SvIVX (count_sv);
2487
2488 count += adjust;
2489 SvIVX (count_sv) = count;
2490
2491 /* now wake up as many waiters as are expected to lock */
2492 while (count > 0 && AvFILLp (av) > 0)
2493 {
2494 SV *cb;
2495
2496 /* swap first two elements so we can shift a waiter */
2497 AvARRAY (av)[0] = AvARRAY (av)[1];
2498 AvARRAY (av)[1] = count_sv;
2499 cb = av_shift (av);
2500
2501 if (SvOBJECT (cb))
2502 {
2503 api_ready (aTHX_ cb);
2504 --count;
2505 }
2506 else if (SvTYPE (cb) == SVt_PVCV)
2507 {
2508 dSP;
2509 PUSHMARK (SP);
2510 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2511 PUTBACK;
2512 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2513 }
2514
2515 SvREFCNT_dec (cb);
2516 }
2517}
2518
2519static void
2520coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2521{
2522 /* call $sem->adjust (0) to possibly wake up some other waiters */
2523 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2524}
2525
2526static int
2527slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2528{
2529 AV *av = (AV *)frame->data;
2530 SV *count_sv = AvARRAY (av)[0];
2531
2532 /* if we are about to throw, don't actually acquire the lock, just throw */
2533 if (CORO_THROW)
2534 return 0;
2535 else if (SvIVX (count_sv) > 0)
2536 {
2537 SvSTATE_current->on_destroy = 0;
2538
2539 if (acquire)
2540 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2541 else
2542 coro_semaphore_adjust (aTHX_ av, 0);
2543
2544 return 0;
2545 }
2546 else
2547 {
2548 int i;
2549 /* if we were woken up but can't down, we look through the whole */
2550 /* waiters list and only add us if we aren't in there already */
2551 /* this avoids some degenerate memory usage cases */
2552
2553 for (i = 1; i <= AvFILLp (av); ++i)
2554 if (AvARRAY (av)[i] == SvRV (coro_current))
2555 return 1;
2556
2557 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2558 return 1;
2559 }
2560}
2561
2562static int
2563slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2564{
2565 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2566}
2567
2568static int
2569slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2570{
2571 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2572}
2573
2574static void
2575slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 AV *av = (AV *)SvRV (arg [0]);
2578
2579 if (SvIVX (AvARRAY (av)[0]) > 0)
2580 {
2581 frame->data = (void *)av;
2582 frame->prepare = prepare_nop;
2583 }
2584 else
2585 {
2586 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2587
2588 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2589 frame->prepare = prepare_schedule;
2590
2591 /* to avoid race conditions when a woken-up coro gets terminated */
2592 /* we arrange for a temporary on_destroy that calls adjust (0) */
2593 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2594 }
2595}
2596
2597static void
2598slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2599{
2600 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2601 frame->check = slf_check_semaphore_down;
2602}
2603
2604static void
2605slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2606{
2607 if (items >= 2)
2608 {
2609 /* callback form */
2610 AV *av = (AV *)SvRV (arg [0]);
2611 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2612
2613 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2614
2615 if (SvIVX (AvARRAY (av)[0]) > 0)
2616 coro_semaphore_adjust (aTHX_ av, 0);
2617
2618 frame->prepare = prepare_nop;
2619 frame->check = slf_check_nop;
2620 }
2621 else
2622 {
2623 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2624 frame->check = slf_check_semaphore_wait;
2625 }
2626}
2627
2628/* signal */
2629
2630static void
2631coro_signal_wake (pTHX_ AV *av, int count)
2632{
2633 SvIVX (AvARRAY (av)[0]) = 0;
2634
2635 /* now signal count waiters */
2636 while (count > 0 && AvFILLp (av) > 0)
2637 {
2638 SV *cb;
2639
2640 /* swap first two elements so we can shift a waiter */
2641 cb = AvARRAY (av)[0];
2642 AvARRAY (av)[0] = AvARRAY (av)[1];
2643 AvARRAY (av)[1] = cb;
2644
2645 cb = av_shift (av);
2646
2647 api_ready (aTHX_ cb);
2648 sv_setiv (cb, 0); /* signal waiter */
2649 SvREFCNT_dec (cb);
2650
2651 --count;
2652 }
2653}
2654
2655static int
2656slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2657{
2658 /* if we are about to throw, also stop waiting */
2659 return SvROK ((SV *)frame->data) && !CORO_THROW;
2660}
2661
2662static void
2663slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2664{
2665 AV *av = (AV *)SvRV (arg [0]);
2666
2667 if (SvIVX (AvARRAY (av)[0]))
2668 {
2669 SvIVX (AvARRAY (av)[0]) = 0;
2670 frame->prepare = prepare_nop;
2671 frame->check = slf_check_nop;
2672 }
2673 else
2674 {
2675 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2676
2677 av_push (av, waiter);
2678
2679 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2680 frame->prepare = prepare_schedule;
2681 frame->check = slf_check_signal_wait;
2682 }
2683}
2684
2685/*****************************************************************************/
2686/* Coro::AIO */
2687
2688#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2689
2690/* helper storage struct */
2691struct io_state
2692{
2693 int errorno;
2694 I32 laststype; /* U16 in 5.10.0 */
2695 int laststatval;
2696 Stat_t statcache;
2697};
2698
2699static void
2700coro_aio_callback (pTHX_ CV *cv)
2701{
2702 dXSARGS;
2703 AV *state = (AV *)GENSUB_ARG;
2704 SV *coro = av_pop (state);
2705 SV *data_sv = newSV (sizeof (struct io_state));
2706
2707 av_extend (state, items - 1);
2708
2709 sv_upgrade (data_sv, SVt_PV);
2710 SvCUR_set (data_sv, sizeof (struct io_state));
2711 SvPOK_only (data_sv);
2712
2713 {
2714 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2715
2716 data->errorno = errno;
2717 data->laststype = PL_laststype;
2718 data->laststatval = PL_laststatval;
2719 data->statcache = PL_statcache;
2720 }
2721
2722 /* now build the result vector out of all the parameters and the data_sv */
2723 {
2724 int i;
2725
2726 for (i = 0; i < items; ++i)
2727 av_push (state, SvREFCNT_inc_NN (ST (i)));
2728 }
2729
2730 av_push (state, data_sv);
2731
2732 api_ready (aTHX_ coro);
2733 SvREFCNT_dec (coro);
2734 SvREFCNT_dec ((AV *)state);
2735}
2736
2737static int
2738slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2739{
2740 AV *state = (AV *)frame->data;
2741
2742 /* if we are about to throw, return early */
2743 /* this does not cancel the aio request, but at least */
2744 /* it quickly returns */
2745 if (CORO_THROW)
2746 return 0;
2747
2748 /* one element that is an RV? repeat! */
2749 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2750 return 1;
2751
2752 /* restore status */
2753 {
2754 SV *data_sv = av_pop (state);
2755 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2756
2757 errno = data->errorno;
2758 PL_laststype = data->laststype;
2759 PL_laststatval = data->laststatval;
2760 PL_statcache = data->statcache;
2761
2762 SvREFCNT_dec (data_sv);
2763 }
2764
2765 /* push result values */
2766 {
2767 dSP;
2768 int i;
2769
2770 EXTEND (SP, AvFILLp (state) + 1);
2771 for (i = 0; i <= AvFILLp (state); ++i)
2772 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2773
2774 PUTBACK;
2775 }
2776
2777 return 0;
2778}
2779
2780static void
2781slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2782{
2783 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2784 SV *coro_hv = SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv (coro_hv);
2786
2787 /* put our coroutine id on the state arg */
2788 av_push (state, SvREFCNT_inc_NN (coro_hv));
2789
2790 /* first see whether we have a non-zero priority and set it as AIO prio */
2791 if (coro->prio)
2792 {
2793 dSP;
2794
2795 static SV *prio_cv;
2796 static SV *prio_sv;
2797
2798 if (expect_false (!prio_cv))
2799 {
2800 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2801 prio_sv = newSViv (0);
2802 }
2803
2804 PUSHMARK (SP);
2805 sv_setiv (prio_sv, coro->prio);
2806 XPUSHs (prio_sv);
2807
2808 PUTBACK;
2809 call_sv (prio_cv, G_VOID | G_DISCARD);
2810 }
2811
2812 /* now call the original request */
2813 {
2814 dSP;
2815 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2816 int i;
2817
2818 PUSHMARK (SP);
2819
2820 /* first push all args to the stack */
2821 EXTEND (SP, items + 1);
2822
2823 for (i = 0; i < items; ++i)
2824 PUSHs (arg [i]);
2825
2826 /* now push the callback closure */
2827 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2828
2829 /* now call the AIO function - we assume our request is uncancelable */
2830 PUTBACK;
2831 call_sv ((SV *)req, G_VOID | G_DISCARD);
2832 }
2833
2834 /* now that the requets is going, we loop toll we have a result */
2835 frame->data = (void *)state;
2836 frame->prepare = prepare_schedule;
2837 frame->check = slf_check_aio_req;
2838}
2839
2840static void
2841coro_aio_req_xs (pTHX_ CV *cv)
2842{
2843 dXSARGS;
2844
2845 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2846
2847 XSRETURN_EMPTY;
2848}
2849
2850/*****************************************************************************/
2851
2852#if CORO_CLONE
2853# include "clone.c"
2854#endif
1734 2855
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2856MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 2857
1737PROTOTYPES: DISABLE 2858PROTOTYPES: DISABLE
1738 2859
1739BOOT: 2860BOOT:
1740{ 2861{
1741#ifdef USE_ITHREADS 2862#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 2863# if CORO_PTHREAD
2864 coro_thx = PERL_GET_CONTEXT;
2865# endif
1743#endif 2866#endif
1744 BOOT_PAGESIZE; 2867 BOOT_PAGESIZE;
2868
2869 cctx_current = cctx_new_empty ();
1745 2870
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2871 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2872 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748 2873
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2874 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1765 main_top_env = PL_top_env; 2890 main_top_env = PL_top_env;
1766 2891
1767 while (main_top_env->je_prev) 2892 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 2893 main_top_env = main_top_env->je_prev;
1769 2894
2895 {
2896 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2897
2898 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2899 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2900
2901 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2902 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2903 }
2904
1770 coroapi.ver = CORO_API_VERSION; 2905 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION; 2906 coroapi.rev = CORO_API_REVISION;
2907
1772 coroapi.transfer = api_transfer; 2908 coroapi.transfer = api_transfer;
2909
2910 coroapi.sv_state = SvSTATE_;
2911 coroapi.execute_slf = api_execute_slf;
2912 coroapi.prepare_nop = prepare_nop;
2913 coroapi.prepare_schedule = prepare_schedule;
2914 coroapi.prepare_cede = prepare_cede;
2915 coroapi.prepare_cede_notself = prepare_cede_notself;
1773 2916
1774 { 2917 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2918 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776 2919
1777 if (!svp) croak ("Time::HiRes is required"); 2920 if (!svp) croak ("Time::HiRes is required");
… …
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2926 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1784} 2927}
1785 2928
1786SV * 2929SV *
1787new (char *klass, ...) 2930new (char *klass, ...)
2931 ALIAS:
2932 Coro::new = 1
1788 CODE: 2933 CODE:
1789{ 2934{
1790 struct coro *coro; 2935 struct coro *coro;
1791 MAGIC *mg; 2936 MAGIC *mg;
1792 HV *hv; 2937 HV *hv;
2938 CV *cb;
1793 int i; 2939 int i;
2940
2941 if (items > 1)
2942 {
2943 cb = coro_sv_2cv (aTHX_ ST (1));
2944
2945 if (!ix)
2946 {
2947 if (CvISXSUB (cb))
2948 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2949
2950 if (!CvROOT (cb))
2951 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2952 }
2953 }
1794 2954
1795 Newz (0, coro, 1, struct coro); 2955 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV (); 2956 coro->args = newAV ();
1797 coro->flags = CF_NEW; 2957 coro->flags = CF_NEW;
1798 2958
… …
1803 coro->hv = hv = newHV (); 2963 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2964 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP; 2965 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2966 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807 2967
2968 if (items > 1)
2969 {
1808 av_extend (coro->args, items - 1); 2970 av_extend (coro->args, items - 1 + ix - 1);
2971
2972 if (ix)
2973 {
2974 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2975 cb = cv_coro_run;
2976 }
2977
2978 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2979
1809 for (i = 1; i < items; i++) 2980 for (i = 2; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i))); 2981 av_push (coro->args, newSVsv (ST (i)));
2982 }
1811} 2983}
1812 OUTPUT: 2984 OUTPUT:
1813 RETVAL 2985 RETVAL
1814 2986
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1818void 2987void
1819_set_stacklevel (...) 2988transfer (...)
1820 ALIAS: 2989 PROTOTYPE: $$
1821 Coro::State::transfer = 1 2990 CODE:
1822 Coro::schedule = 2 2991 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1823 Coro::cede = 3
1824 Coro::cede_notself = 4
1825 CODE:
1826{
1827 struct transfer_args ta;
1828
1829 PUTBACK;
1830 switch (ix)
1831 {
1832 case 0:
1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1834 ta.next = 0;
1835 break;
1836
1837 case 1:
1838 if (items != 2)
1839 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1840
1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842 break;
1843
1844 case 2:
1845 prepare_schedule (aTHX_ &ta);
1846 break;
1847
1848 case 3:
1849 prepare_cede (aTHX_ &ta);
1850 break;
1851
1852 case 4:
1853 if (!prepare_cede_notself (aTHX_ &ta))
1854 XSRETURN_EMPTY;
1855
1856 break;
1857 }
1858 SPAGAIN;
1859
1860 BARRIER;
1861 PUTBACK;
1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1865}
1866 2992
1867bool 2993bool
1868_destroy (SV *coro_sv) 2994_destroy (SV *coro_sv)
1869 CODE: 2995 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2996 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875_exit (int code) 3001_exit (int code)
1876 PROTOTYPE: $ 3002 PROTOTYPE: $
1877 CODE: 3003 CODE:
1878 _exit (code); 3004 _exit (code);
1879 3005
3006SV *
3007clone (Coro::State coro)
3008 CODE:
3009{
3010#if CORO_CLONE
3011 struct coro *ncoro = coro_clone (aTHX_ coro);
3012 MAGIC *mg;
3013 /* TODO: too much duplication */
3014 ncoro->hv = newHV ();
3015 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3016 mg->mg_flags |= MGf_DUP;
3017 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3018#else
3019 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3020#endif
3021}
3022 OUTPUT:
3023 RETVAL
3024
1880int 3025int
1881cctx_stacksize (int new_stacksize = 0) 3026cctx_stacksize (int new_stacksize = 0)
3027 PROTOTYPE: ;$
1882 CODE: 3028 CODE:
1883 RETVAL = coro_stacksize; 3029 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 3030 if (new_stacksize)
3031 {
1885 coro_stacksize = new_stacksize; 3032 cctx_stacksize = new_stacksize;
3033 ++cctx_gen;
3034 }
1886 OUTPUT: 3035 OUTPUT:
1887 RETVAL 3036 RETVAL
1888 3037
1889int 3038int
3039cctx_max_idle (int max_idle = 0)
3040 PROTOTYPE: ;$
3041 CODE:
3042 RETVAL = cctx_max_idle;
3043 if (max_idle > 1)
3044 cctx_max_idle = max_idle;
3045 OUTPUT:
3046 RETVAL
3047
3048int
1890cctx_count () 3049cctx_count ()
3050 PROTOTYPE:
1891 CODE: 3051 CODE:
1892 RETVAL = cctx_count; 3052 RETVAL = cctx_count;
1893 OUTPUT: 3053 OUTPUT:
1894 RETVAL 3054 RETVAL
1895 3055
1896int 3056int
1897cctx_idle () 3057cctx_idle ()
3058 PROTOTYPE:
1898 CODE: 3059 CODE:
1899 RETVAL = cctx_idle; 3060 RETVAL = cctx_idle;
1900 OUTPUT: 3061 OUTPUT:
1901 RETVAL 3062 RETVAL
1902 3063
1903void 3064void
1904list () 3065list ()
3066 PROTOTYPE:
1905 PPCODE: 3067 PPCODE:
1906{ 3068{
1907 struct coro *coro; 3069 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 3070 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 3071 if (coro->hv)
… …
1916 eval = 1 3078 eval = 1
1917 CODE: 3079 CODE:
1918{ 3080{
1919 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3081 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1920 { 3082 {
1921 struct coro temp; 3083 struct coro *current = SvSTATE_current;
1922 3084
1923 if (!(coro->flags & CF_RUNNING)) 3085 if (current != coro)
1924 { 3086 {
1925 PUTBACK; 3087 PUTBACK;
1926 save_perl (aTHX_ &temp); 3088 save_perl (aTHX_ current);
1927 load_perl (aTHX_ coro); 3089 load_perl (aTHX_ coro);
3090 SPAGAIN;
1928 } 3091 }
1929 3092
1930 {
1931 dSP;
1932 ENTER;
1933 SAVETMPS;
1934 PUTBACK;
1935 PUSHSTACK; 3093 PUSHSTACK;
3094
1936 PUSHMARK (SP); 3095 PUSHMARK (SP);
3096 PUTBACK;
1937 3097
1938 if (ix) 3098 if (ix)
1939 eval_sv (coderef, 0); 3099 eval_sv (coderef, 0);
1940 else 3100 else
1941 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3101 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1942 3102
1943 POPSTACK; 3103 POPSTACK;
1944 SPAGAIN; 3104 SPAGAIN;
1945 FREETMPS;
1946 LEAVE;
1947 PUTBACK;
1948 }
1949 3105
1950 if (!(coro->flags & CF_RUNNING)) 3106 if (current != coro)
1951 { 3107 {
3108 PUTBACK;
1952 save_perl (aTHX_ coro); 3109 save_perl (aTHX_ coro);
1953 load_perl (aTHX_ &temp); 3110 load_perl (aTHX_ current);
1954 SPAGAIN; 3111 SPAGAIN;
1955 } 3112 }
1956 } 3113 }
1957} 3114}
1958 3115
… …
1962 ALIAS: 3119 ALIAS:
1963 is_ready = CF_READY 3120 is_ready = CF_READY
1964 is_running = CF_RUNNING 3121 is_running = CF_RUNNING
1965 is_new = CF_NEW 3122 is_new = CF_NEW
1966 is_destroyed = CF_DESTROYED 3123 is_destroyed = CF_DESTROYED
3124 is_suspended = CF_SUSPENDED
1967 CODE: 3125 CODE:
1968 RETVAL = boolSV (coro->flags & ix); 3126 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 3127 OUTPUT:
1970 RETVAL 3128 RETVAL
1971 3129
1972void 3130void
3131throw (Coro::State self, SV *throw = &PL_sv_undef)
3132 PROTOTYPE: $;$
3133 CODE:
3134{
3135 struct coro *current = SvSTATE_current;
3136 SV **throwp = self == current ? &CORO_THROW : &self->except;
3137 SvREFCNT_dec (*throwp);
3138 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3139}
3140
3141void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3142api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3143 PROTOTYPE: $;$
3144 C_ARGS: aTHX_ coro, flags
1974 3145
1975SV * 3146SV *
1976has_cctx (Coro::State coro) 3147has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 3148 PROTOTYPE: $
1978 CODE: 3149 CODE:
1979 RETVAL = boolSV (!!coro->cctx); 3150 /* maybe manage the running flag differently */
3151 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1980 OUTPUT: 3152 OUTPUT:
1981 RETVAL 3153 RETVAL
1982 3154
1983int 3155int
1984is_traced (Coro::State coro) 3156is_traced (Coro::State coro)
… …
1986 CODE: 3158 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3159 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 3160 OUTPUT:
1989 RETVAL 3161 RETVAL
1990 3162
1991IV 3163UV
1992rss (Coro::State coro) 3164rss (Coro::State coro)
1993 PROTOTYPE: $ 3165 PROTOTYPE: $
1994 ALIAS: 3166 ALIAS:
1995 usecount = 1 3167 usecount = 1
1996 CODE: 3168 CODE:
… …
2002 OUTPUT: 3174 OUTPUT:
2003 RETVAL 3175 RETVAL
2004 3176
2005void 3177void
2006force_cctx () 3178force_cctx ()
3179 PROTOTYPE:
2007 CODE: 3180 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 3181 cctx_current->idle_sp = 0;
2010 3182
2011void 3183void
2012swap_defsv (Coro::State self) 3184swap_defsv (Coro::State self)
2013 PROTOTYPE: $ 3185 PROTOTYPE: $
2014 ALIAS: 3186 ALIAS:
2015 swap_defav = 1 3187 swap_defav = 1
2016 CODE: 3188 CODE:
2017 if (!self->slot) 3189 if (!self->slot)
2018 croak ("cannot swap state with coroutine that has no saved state"); 3190 croak ("cannot swap state with coroutine that has no saved state,");
2019 else 3191 else
2020 { 3192 {
2021 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3193 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2022 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3194 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2023 3195
2024 SV *tmp = *src; *src = *dst; *dst = tmp; 3196 SV *tmp = *src; *src = *dst; *dst = tmp;
2025 } 3197 }
2026 3198
3199void
3200cancel (Coro::State self)
3201 CODE:
3202 coro_state_destroy (aTHX_ self);
3203 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3204
3205
2027MODULE = Coro::State PACKAGE = Coro 3206MODULE = Coro::State PACKAGE = Coro
2028 3207
2029BOOT: 3208BOOT:
2030{ 3209{
2031 int i; 3210 int i;
2032 3211
2033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2034 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3212 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2035 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3213 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2036 3214 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3215 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2037 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3216 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2038 SvREADONLY_on (coro_current); 3217 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3218 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3219 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3220 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3221
3222 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3223 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3224 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3225 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2039 3226
2040 coro_stash = gv_stashpv ("Coro", TRUE); 3227 coro_stash = gv_stashpv ("Coro", TRUE);
2041 3228
2042 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2043 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2048 3235
2049 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3236 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2050 coro_ready[i] = newAV (); 3237 coro_ready[i] = newAV ();
2051 3238
2052 { 3239 {
2053 SV *sv = perl_get_sv ("Coro::API", TRUE); 3240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2054 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2055 3241
2056 coroapi.schedule = api_schedule; 3242 coroapi.schedule = api_schedule;
3243 coroapi.schedule_to = api_schedule_to;
2057 coroapi.cede = api_cede; 3244 coroapi.cede = api_cede;
2058 coroapi.cede_notself = api_cede_notself; 3245 coroapi.cede_notself = api_cede_notself;
2059 coroapi.ready = api_ready; 3246 coroapi.ready = api_ready;
2060 coroapi.is_ready = api_is_ready; 3247 coroapi.is_ready = api_is_ready;
2061 coroapi.nready = &coro_nready; 3248 coroapi.nready = coro_nready;
2062 coroapi.current = coro_current; 3249 coroapi.current = coro_current;
2063 3250
2064 GCoroAPI = &coroapi; 3251 /*GCoroAPI = &coroapi;*/
2065 sv_setiv (sv, (IV)&coroapi); 3252 sv_setiv (sv, (IV)&coroapi);
2066 SvREADONLY_on (sv); 3253 SvREADONLY_on (sv);
2067 } 3254 }
2068} 3255}
3256
3257void
3258terminate (...)
3259 CODE:
3260 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3261
3262void
3263schedule (...)
3264 CODE:
3265 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3266
3267void
3268schedule_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3271
3272void
3273cede_to (...)
3274 CODE:
3275 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3276
3277void
3278cede (...)
3279 CODE:
3280 CORO_EXECUTE_SLF_XS (slf_init_cede);
3281
3282void
3283cede_notself (...)
3284 CODE:
3285 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2069 3286
2070void 3287void
2071_set_current (SV *current) 3288_set_current (SV *current)
2072 PROTOTYPE: $ 3289 PROTOTYPE: $
2073 CODE: 3290 CODE:
… …
2076 3293
2077void 3294void
2078_set_readyhook (SV *hook) 3295_set_readyhook (SV *hook)
2079 PROTOTYPE: $ 3296 PROTOTYPE: $
2080 CODE: 3297 CODE:
2081 LOCK;
2082 SvREFCNT_dec (coro_readyhook); 3298 SvREFCNT_dec (coro_readyhook);
2083 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3299 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2084 UNLOCK;
2085 3300
2086int 3301int
2087prio (Coro::State coro, int newprio = 0) 3302prio (Coro::State coro, int newprio = 0)
3303 PROTOTYPE: $;$
2088 ALIAS: 3304 ALIAS:
2089 nice = 1 3305 nice = 1
2090 CODE: 3306 CODE:
2091{ 3307{
2092 RETVAL = coro->prio; 3308 RETVAL = coro->prio;
… …
2107 3323
2108SV * 3324SV *
2109ready (SV *self) 3325ready (SV *self)
2110 PROTOTYPE: $ 3326 PROTOTYPE: $
2111 CODE: 3327 CODE:
2112 RETVAL = boolSV (api_ready (self)); 3328 RETVAL = boolSV (api_ready (aTHX_ self));
2113 OUTPUT: 3329 OUTPUT:
2114 RETVAL 3330 RETVAL
2115 3331
2116int 3332int
2117nready (...) 3333nready (...)
… …
2120 RETVAL = coro_nready; 3336 RETVAL = coro_nready;
2121 OUTPUT: 3337 OUTPUT:
2122 RETVAL 3338 RETVAL
2123 3339
2124void 3340void
2125throw (Coro::State self, SV *throw = &PL_sv_undef) 3341_pool_handler (...)
2126 PROTOTYPE: $;$ 3342 CODE:
2127 CODE: 3343 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2128 SvREFCNT_dec (self->throw);
2129 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2130 3344
2131# for async_pool speedup
2132void 3345void
2133_pool_1 (SV *cb) 3346async_pool (SV *cv, ...)
3347 PROTOTYPE: &@
3348 PPCODE:
3349{
3350 HV *hv = (HV *)av_pop (av_async_pool);
3351 AV *av = newAV ();
3352 SV *cb = ST (0);
3353 int i;
3354
3355 av_extend (av, items - 2);
3356 for (i = 1; i < items; ++i)
3357 av_push (av, SvREFCNT_inc_NN (ST (i)));
3358
3359 if ((SV *)hv == &PL_sv_undef)
3360 {
3361 PUSHMARK (SP);
3362 EXTEND (SP, 2);
3363 PUSHs (sv_Coro);
3364 PUSHs ((SV *)cv_pool_handler);
3365 PUTBACK;
3366 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3367 SPAGAIN;
3368
3369 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3370 }
3371
3372 {
3373 struct coro *coro = SvSTATE_hv (hv);
3374
3375 assert (!coro->invoke_cb);
3376 assert (!coro->invoke_av);
3377 coro->invoke_cb = SvREFCNT_inc (cb);
3378 coro->invoke_av = av;
3379 }
3380
3381 api_ready (aTHX_ (SV *)hv);
3382
3383 if (GIMME_V != G_VOID)
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3385 else
3386 SvREFCNT_dec (hv);
3387}
3388
3389SV *
3390rouse_cb ()
3391 PROTOTYPE:
2134 CODE: 3392 CODE:
2135{ 3393 RETVAL = coro_new_rouse_cb (aTHX);
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142
2143 if (!invoke)
2144 {
2145 SV *old = PL_diehook;
2146 PL_diehook = 0;
2147 SvREFCNT_dec (old);
2148 croak ("\3async_pool terminate\2\n");
2149 }
2150
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 {
2164 av_fill (defav, len - 1);
2165 for (i = 0; i < len; ++i)
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2167 }
2168
2169 SvREFCNT_dec (invoke);
2170}
2171
2172void
2173_pool_2 (SV *cb)
2174 CODE:
2175{
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT: 3394 OUTPUT:
2248 RETVAL 3395 RETVAL
2249 3396
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 3397void
2256_get_state (SV *self) 3398rouse_wait (...)
3399 PROTOTYPE: ;$
2257 PPCODE: 3400 PPCODE:
2258{ 3401 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2259 AV *defav = GvAV (PL_defgv);
2260 AV *av = newAV ();
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
2282}
2283 3402
2284void 3403void
2285_set_state (SV *state) 3404on_enter (SV *block)
3405 ALIAS:
3406 on_leave = 1
2286 PROTOTYPE: $ 3407 PROTOTYPE: &
3408 CODE:
3409{
3410 struct coro *coro = SvSTATE_current;
3411 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3412
3413 block = (SV *)coro_sv_2cv (aTHX_ block);
3414
3415 if (!*avp)
3416 *avp = newAV ();
3417
3418 av_push (*avp, SvREFCNT_inc (block));
3419
3420 if (!ix)
3421 on_enterleave_call (aTHX_ block);
3422
3423 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3424 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3425 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3426}
3427
3428
3429MODULE = Coro::State PACKAGE = PerlIO::cede
3430
3431BOOT:
3432 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3433
3434
3435MODULE = Coro::State PACKAGE = Coro::Semaphore
3436
3437SV *
3438new (SV *klass, SV *count = 0)
3439 CODE:
3440 RETVAL = sv_bless (
3441 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3442 GvSTASH (CvGV (cv))
3443 );
3444 OUTPUT:
3445 RETVAL
3446
3447# helper for Coro::Channel and others
3448SV *
3449_alloc (int count)
3450 CODE:
3451 RETVAL = coro_waitarray_new (aTHX_ count);
3452 OUTPUT:
3453 RETVAL
3454
3455SV *
3456count (SV *self)
3457 CODE:
3458 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3459 OUTPUT:
3460 RETVAL
3461
3462void
3463up (SV *self, int adjust = 1)
3464 ALIAS:
3465 adjust = 1
3466 CODE:
3467 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3468
3469void
3470down (...)
3471 CODE:
3472 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3473
3474void
3475wait (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3478
3479void
3480try (SV *self)
3481 PPCODE:
3482{
3483 AV *av = (AV *)SvRV (self);
3484 SV *count_sv = AvARRAY (av)[0];
3485 IV count = SvIVX (count_sv);
3486
3487 if (count > 0)
3488 {
3489 --count;
3490 SvIVX (count_sv) = count;
3491 XSRETURN_YES;
3492 }
3493 else
3494 XSRETURN_NO;
3495}
3496
3497void
3498waiters (SV *self)
3499 PPCODE:
3500{
3501 AV *av = (AV *)SvRV (self);
3502 int wcount = AvFILLp (av) + 1 - 1;
3503
3504 if (GIMME_V == G_SCALAR)
3505 XPUSHs (sv_2mortal (newSViv (wcount)));
3506 else
3507 {
3508 int i;
3509 EXTEND (SP, wcount);
3510 for (i = 1; i <= wcount; ++i)
3511 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3512 }
3513}
3514
3515MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3516
3517void
3518_may_delete (SV *sem, int count, int extra_refs)
2287 PPCODE: 3519 PPCODE:
2288{ 3520{
2289 AV *av = (AV *)SvRV (state); 3521 AV *av = (AV *)SvRV (sem);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2291 int i;
2292 3522
2293 errno = data->errorno; 3523 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2294 PL_laststype = data->laststype; 3524 && AvFILLp (av) == 0 /* no waiters, just count */
2295 PL_laststatval = data->laststatval; 3525 && SvIV (AvARRAY (av)[0]) == count)
2296 PL_statcache = data->statcache; 3526 XSRETURN_YES;
2297 3527
3528 XSRETURN_NO;
3529}
3530
3531MODULE = Coro::State PACKAGE = Coro::Signal
3532
3533SV *
3534new (SV *klass)
3535 CODE:
3536 RETVAL = sv_bless (
3537 coro_waitarray_new (aTHX_ 0),
3538 GvSTASH (CvGV (cv))
3539 );
3540 OUTPUT:
3541 RETVAL
3542
3543void
3544wait (...)
3545 CODE:
3546 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3547
3548void
3549broadcast (SV *self)
3550 CODE:
3551{
3552 AV *av = (AV *)SvRV (self);
3553 coro_signal_wake (aTHX_ av, AvFILLp (av));
3554}
3555
3556void
3557send (SV *self)
3558 CODE:
3559{
3560 AV *av = (AV *)SvRV (self);
3561
2298 EXTEND (SP, AvFILLp (av)); 3562 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 3563 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3564 else
3565 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 3566}
3567
3568IV
3569awaited (SV *self)
3570 CODE:
3571 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3572 OUTPUT:
3573 RETVAL
2302 3574
2303 3575
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 3576MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 3577
2306BOOT: 3578BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3579 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 3580
2309SV * 3581void
2310_schedule (...) 3582_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 3583 CODE:
2313{ 3584{
2314 static int incede; 3585 static int incede;
2315 3586
2316 api_cede_notself (); 3587 api_cede_notself (aTHX);
2317 3588
2318 ++incede; 3589 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 3590 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 3591 ;
2321 3592
2322 sv_setsv (sv_activity, &PL_sv_undef); 3593 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 3594 if (coro_nready >= incede)
2324 { 3595 {
2325 PUSHMARK (SP); 3596 PUSHMARK (SP);
2326 PUTBACK; 3597 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3598 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 3599 }
2330 3600
2331 --incede; 3601 --incede;
2332} 3602}
2333 3603
2334 3604
2335MODULE = Coro::State PACKAGE = PerlIO::cede 3605MODULE = Coro::State PACKAGE = Coro::AIO
2336 3606
2337BOOT: 3607void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3608_register (char *target, char *proto, SV *req)
3609 CODE:
3610{
3611 CV *req_cv = coro_sv_2cv (aTHX_ req);
3612 /* newXSproto doesn't return the CV on 5.8 */
3613 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3614 sv_setpv ((SV *)slf_cv, proto);
3615 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3616}
3617

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