ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC vs.
Revision 1.328 by root, Tue Nov 25 09:49:43 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_main_cv == Nullcv)
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 after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
173 181
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 */
225}; 243};
226 244
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 246typedef struct
247{
229 SV *defsv; 248 SV *defsv;
230 AV *defav; 249 AV *defav;
231 SV *errsv; 250 SV *errsv;
232 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
233#define VAR(name,type) type name; 253#define VAR(name,type) type name;
234# include "state.h" 254# include "state.h"
235#undef VAR 255#undef VAR
236} perl_slots; 256} perl_slots;
237 257
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 259
240/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
241struct coro { 261struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 263 coro_cctx *cctx;
244 264
245 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 267 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
248 269
270 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
253 276
254 /* statistics */ 277 /* statistics */
255 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
256 279
257 /* coro process data */ 280 /* coro process data */
258 int prio; 281 int prio;
259 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
260 284
261 /* async_pool */ 285 /* async_pool */
262 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
263 289
264 /* linked list */ 290 /* linked list */
265 struct coro *next, *prev; 291 struct coro *next, *prev;
266}; 292};
267 293
268typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
270 301
271/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
272 303
273#define PRIO_MAX 3 304#define PRIO_MAX 3
274#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 309#define PRIO_MIN -4
279 310
280/* for Coro.pm */ 311/* for Coro.pm */
281static SV *coro_current; 312static SV *coro_current;
282static SV *coro_readyhook; 313static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
286 318
287/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
288 320
289static SV * 321static SV *
290coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
314 get_hv (name, create); 346 get_hv (name, create);
315#endif 347#endif
316 return get_hv (name, create); 348 return get_hv (name, create);
317} 349}
318 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
319static AV * 360static AV *
320coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
321{ 362{
322 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
324 365
325 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 417
377 return 0; 418 return 0;
378} 419}
379 420
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
381#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 423
383static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 425 0, 0, 0, 0,
385 coro_cv_free 426 coro_cv_free
386}; 427};
387 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
388#define CORO_MAGIC(sv,type) \ 434#define CORO_MAGIC(sv, type) \
389 SvMAGIC (sv) \ 435 (expect_true (SvMAGIC (sv)) \
390 ? SvMAGIC (sv)->mg_type == type \ 436 ? CORO_MAGIC_NN (sv, type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0 437 : 0)
394 438
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
397 441
398static struct coro * 442INLINE struct coro *
399SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
400{ 444{
401 HV *stash; 445 HV *stash;
402 MAGIC *mg; 446 MAGIC *mg;
403 447
… …
418 mg = CORO_MAGIC_state (coro); 462 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
420} 464}
421 465
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
423 471
424/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
425static void 473static void
426get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
427{ 475{
… …
433 else 481 else
434 { 482 {
435#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 484 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 485 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
442#else 490#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 492#endif
445 } 493 }
446} 494}
447 495
448static void 496static void
… …
470 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
471 c->slot = 0; 519 c->slot = 0;
472 520
473 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
474 522
475 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
479 528
480 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
481 # include "state.h" 530 # include "state.h"
482 #undef VAR 531 #undef VAR
483 532
… …
494 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
495 } 544 }
496 545
497 PUTBACK; 546 PUTBACK;
498 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
499} 551}
500 552
501static void 553static void
502save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
503{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
504 { 559 {
505 dSP; 560 dSP;
506 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
563 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
564 619
565 { 620 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567 622
568 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
570 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
572 628
573 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
574 # include "state.h" 630 # include "state.h"
575 #undef VAR 631 #undef VAR
576 } 632 }
577} 633}
578 634
579/* 635/*
580 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
584 */ 640 */
585#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
587#else 643#else
588static void 644static void
589coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
590{ 646{
591 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
628 684
629/* 685/*
630 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
631 */ 687 */
632static void 688static void
633coro_destroy_stacks (pTHX) 689coro_destruct_stacks (pTHX)
634{ 690{
635 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
637 693
638 while (PL_curstackinfo) 694 while (PL_curstackinfo)
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 711 Safefree (PL_retstack);
656#endif 712#endif
657} 713}
658 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
659static size_t 724static size_t
660coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
661{ 726{
662 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
663 728
664 if (coro->mainstack) 729 if (coro->mainstack)
665 { 730 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
670 { 732 {
671 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
672 734 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 735 #undef SYM
676 } 736 }
677 else 737 else
678 slot = coro->slot;
679
680 if (slot)
681 { 738 {
682 rss += sizeof (slot->curstackinfo); 739 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 741 #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 } 742 }
694 } 743 }
695 744
696 return rss; 745 return rss;
697} 746}
… …
787 836
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 838}
790 839
791static void 840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
793{ 863{
794 /* 864 /*
795 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
796 */ 866 */
… …
798 868
799 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
803 PL_curpm = 0; 876 PL_curpm = 0;
804 PL_curpad = 0; 877 PL_curpad = 0;
805 PL_localizing = 0; 878 PL_localizing = 0;
806 PL_dirty = 0; 879 PL_dirty = 0;
807 PL_restartop = 0; 880 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0; 882 PL_parser = 0;
810#endif 883#endif
884 PL_hints = 0;
811 885
812 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815 889
816 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
820 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 897
823 { 898 {
824 dSP; 899 dSP;
825 LOGOP myop; 900 UNOP myop;
826 901
827 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
830 906
831 PUSHMARK (SP); 907 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 909 PUTBACK;
834 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 912 }
838 913
839 /* this newly created coroutine might be run on an existing cctx which most 914 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 916 */
844 ENTER; 917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
847static void 932static void
848coro_destroy (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
849{ 934{
850 if (!IN_DESTRUCT) 935 if (!IN_DESTRUCT)
851 { 936 {
852 /* restore all saved variables and stuff */ 937 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 938 LEAVE_SCOPE (0);
… …
868 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
869 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
870 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
871 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
873 959
874 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
876 962
877 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
879 967
880 coro_destroy_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
881} 969}
882 970
883static void 971INLINE void
884free_coro_mortal (pTHX) 972free_coro_mortal (pTHX)
885{ 973{
886 if (expect_true (coro_mortal)) 974 if (expect_true (coro_mortal))
887 { 975 {
888 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
… …
893static int 981static int
894runops_trace (pTHX) 982runops_trace (pTHX)
895{ 983{
896 COP *oldcop = 0; 984 COP *oldcop = 0;
897 int oldcxix = -2; 985 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 986
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 988 {
903 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
904 990
905 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
906 { 992 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 994 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 996 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
912 SV **cb; 998 SV **cb;
… …
949 1035
950 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
951 { 1037 {
952 SV **cb; 1038 SV **cb;
953 1039
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1041 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1043
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1045 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1046 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
964 1049
965 if (isGV (gv)) 1050 if (isGV (gv))
… …
970 SAVETMPS; 1055 SAVETMPS;
971 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
972 PUSHMARK (SP); 1057 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1059 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1061 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1064 SPAGAIN;
980 FREETMPS; 1065 FREETMPS;
… …
983 } 1068 }
984 1069
985 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
986 } 1071 }
987 1072
988 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1074 {
990 dSP; 1075 dSP;
991 1076
992 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1078 ENTER;
… …
1012 1097
1013 TAINT_NOT; 1098 TAINT_NOT;
1014 return 0; 1099 return 0;
1015} 1100}
1016 1101
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1103
1019/* during execution of a perl program */ 1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1119static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1022{ 1121{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1027 1123
1028 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1030 1126
1031 Zero (&myop, 1, LOGOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1131
1035 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1134
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1137}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138
1042 SPAGAIN; 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
1043} 1144}
1044 1145
1045/* 1146/*
1046 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1148 */
1048static void 1149static void
1049cctx_run (void *arg) 1150cctx_run (void *arg)
1050{ 1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
1051 dTHX; 1158 dTHX;
1052 1159
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1160 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1161 /* 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; 1162 /* PL_nop = PL_nop->op_next */
1058 1163
1059 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1061 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1065
1066 /* 1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1177
1178 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1179 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1180 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1181 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
1072 */ 1186 */
1073 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1189 }
1075} 1190}
1076 1191
1077static coro_cctx * 1192static coro_cctx *
1078cctx_new () 1193cctx_new ()
1079{ 1194{
1080 coro_cctx *cctx; 1195 coro_cctx *cctx;
1196
1197 ++cctx_count;
1198 New (0, cctx, 1, coro_cctx);
1199
1200 cctx->gen = cctx_gen;
1201 cctx->flags = 0;
1202 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx only suitable as source */
1208static coro_cctx *
1209cctx_new_empty ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1212
1213 cctx->sptr = 0;
1214 coro_create (&cctx->cctx, 0, 0, 0, 0);
1215
1216 return cctx;
1217}
1218
1219/* create a new cctx suitable as destination/running a perl interpreter */
1220static coro_cctx *
1221cctx_new_run ()
1222{
1223 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1224 void *stack_start;
1082 size_t stack_size; 1225 size_t stack_size;
1083 1226
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1227#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1228 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1229 /* 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); 1230 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1231
1093 if (cctx->sptr != (void *)-1) 1232 if (cctx->sptr != (void *)-1)
1094 { 1233 {
1095# if CORO_STACKGUARD 1234 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1235 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1236 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1237 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1238 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1239 cctx->flags |= CC_MAPPED;
1101 } 1240 }
1102 else 1241 else
1103#endif 1242#endif
1104 { 1243 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1244 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1245 New (0, cctx->sptr, cctx_stacksize, long);
1107 1246
1108 if (!cctx->sptr) 1247 if (!cctx->sptr)
1109 { 1248 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1249 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1250 _exit (EXIT_FAILURE);
1112 } 1251 }
1113 1252
1114 stack_start = cctx->sptr; 1253 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1254 stack_size = cctx->ssize;
1116 } 1255 }
1117 1256
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1257 #if CORO_USE_VALGRIND
1258 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1259 #endif
1260
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1261 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1262
1121 return cctx; 1263 return cctx;
1122} 1264}
1123 1265
… …
1125cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
1126{ 1268{
1127 if (!cctx) 1269 if (!cctx)
1128 return; 1270 return;
1129 1271
1272 assert (cctx != cctx_current);//D temporary
1273
1130 --cctx_count; 1274 --cctx_count;
1275 coro_destroy (&cctx->cctx);
1131 1276
1277 /* coro_transfer creates new, empty cctx's */
1278 if (cctx->sptr)
1279 {
1132#if CORO_USE_VALGRIND 1280 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1281 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1134#endif 1282 #endif
1135 1283
1136#if HAVE_MMAP 1284#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED) 1285 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize); 1286 munmap (cctx->sptr, cctx->ssize);
1139 else 1287 else
1140#endif 1288#endif
1141 Safefree (cctx->sptr); 1289 Safefree (cctx->sptr);
1290 }
1142 1291
1143 Safefree (cctx); 1292 Safefree (cctx);
1144} 1293}
1145 1294
1146/* wether this cctx should be destructed */ 1295/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1296#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1297
1149static coro_cctx * 1298static coro_cctx *
1150cctx_get (pTHX) 1299cctx_get (pTHX)
1151{ 1300{
1152 while (expect_true (cctx_first)) 1301 while (expect_true (cctx_first))
… …
1159 return cctx; 1308 return cctx;
1160 1309
1161 cctx_destroy (cctx); 1310 cctx_destroy (cctx);
1162 } 1311 }
1163 1312
1164 return cctx_new (); 1313 return cctx_new_run ();
1165} 1314}
1166 1315
1167static void 1316static void
1168cctx_put (coro_cctx *cctx) 1317cctx_put (coro_cctx *cctx)
1169{ 1318{
1319 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1320
1170 /* free another cctx if overlimit */ 1321 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1322 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1323 {
1173 coro_cctx *first = cctx_first; 1324 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1325 cctx_first = first->next;
1175 --cctx_idle; 1326 --cctx_idle;
1176 1327
… …
1185/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
1186 1337
1187static void 1338static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1340{
1341 /* TODO: throwing up here is considered harmful */
1342
1190 if (expect_true (prev != next)) 1343 if (expect_true (prev != next))
1191 { 1344 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1345 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"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1194 1347
1195 if (expect_false (next->flags & CF_RUNNING)) 1348 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"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1197 1350
1198 if (expect_false (next->flags & CF_DESTROYED)) 1351 if (expect_false (next->flags & CF_DESTROYED))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1200 1353
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1354#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1355 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"); 1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1357#endif
1205 } 1358 }
1206} 1359}
1207 1360
1208/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
1209static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1364{
1212 dSTACKLEVEL; 1365 dSTACKLEVEL;
1213 static volatile int has_throw;
1214 1366
1215 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
1216 if (expect_false (!next)) 1368 if (expect_false (!prev))
1217 { 1369 {
1218 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
1219 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1220 } 1372 }
1221 else if (expect_true (prev != next)) 1373 else if (expect_true (prev != next))
1222 { 1374 {
1223 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
1224 1376
1225 if (expect_false (prev->flags & CF_NEW)) 1377 if (expect_false (prev->flags & CF_NEW))
1226 { 1378 {
1227 /* create a new empty context */ 1379 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx);
1229 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
1231 } 1382 }
1232 1383
1233 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1386
1238 /* first get rid of the old state */ 1387 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1388 save_perl (aTHX_ prev);
1240 1389
1241 if (expect_false (next->flags & CF_NEW)) 1390 if (expect_false (next->flags & CF_NEW))
… …
1246 coro_setup (aTHX_ next); 1395 coro_setup (aTHX_ next);
1247 } 1396 }
1248 else 1397 else
1249 load_perl (aTHX_ next); 1398 load_perl (aTHX_ next);
1250 1399
1251 prev__cctx = prev->cctx; 1400 assert (!prev->cctx);//D temporary
1252 1401
1253 /* possibly "free" the cctx */ 1402 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1403 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1404 cctx_current->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1405 && !(cctx_current->flags & CC_TRACE)
1257 && !force_cctx 1406 && !force_cctx
1258 )) 1407 ))
1259 { 1408 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1410 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1262 1411
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 */ 1412 /* 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 */ 1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1268 if (!next->cctx) 1415 if (expect_true (!next->cctx))
1269 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1270 1417
1271 cctx_put (prev__cctx); 1418 cctx_put (cctx_current);
1272 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1273 1422
1274 ++next->usecount; 1423 ++next->usecount;
1275 1424
1276 if (expect_true (!next->cctx)) 1425 cctx_prev = cctx_current;
1277 next->cctx = cctx_get (aTHX); 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1278 1427
1279 has_throw = !!next->throw; 1428 next->cctx = 0;
1280 1429
1281 if (expect_false (prev__cctx != next->cctx)) 1430 if (expect_false (cctx_prev != cctx_current))
1282 { 1431 {
1283 prev__cctx->top_env = PL_top_env; 1432 cctx_prev->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1433 PL_top_env = cctx_current->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1286 } 1435 }
1287 1436
1288 free_coro_mortal (aTHX); 1437 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 } 1438 }
1304} 1439}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1440
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1441#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1442#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1443
1314/** high level stuff ********************************************************/ 1444/** high level stuff ********************************************************/
… …
1316static int 1446static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1448{
1319 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1320 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1321 1454
1322 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1323 1456
1324 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1325 { 1458 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1461 --coro_nready;
1330 UNLOCK;
1331 } 1462 }
1332 else 1463 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334 1465
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
1336 { 1467 {
1337 struct coro temp; 1468 struct coro temp;
1338 1469
1339 if (coro->flags & CF_RUNNING) 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341 1471
1342 save_perl (aTHX_ &temp); 1472 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro); 1473 load_perl (aTHX_ coro);
1344 1474
1345 coro_destroy (aTHX_ coro); 1475 coro_destruct (aTHX_ coro);
1346 1476
1347 load_perl (aTHX_ &temp); 1477 load_perl (aTHX_ &temp);
1348 1478
1349 coro->slot = 0; 1479 coro->slot = 0;
1350 } 1480 }
1351 1481
1352 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1353 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1354 1486
1355 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1358 1490
… …
1396# define MGf_DUP 0 1528# define MGf_DUP 0
1397#endif 1529#endif
1398}; 1530};
1399 1531
1400static void 1532static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1533prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1534{
1403 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1537 TRANSFER_CHECK (*ta);
1406} 1538}
1407 1539
1408static void 1540static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1542{
1411 dTHX;
1412 struct transfer_args ta; 1543 struct coro_transfer_args ta;
1413 1544
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1546 TRANSFER (ta, 1);
1416} 1547}
1417 1548
1549/*****************************************************************************/
1550/* gensub: simple closure generation utility */
1551
1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1553
1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
1570}
1571
1418/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1419 1573
1420static void 1574INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1422{ 1576{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1424} 1578}
1425 1579
1426static SV * 1580INLINE SV *
1427coro_deq (pTHX) 1581coro_deq (pTHX)
1428{ 1582{
1429 int prio; 1583 int prio;
1430 1584
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1434 1588
1435 return 0; 1589 return 0;
1436} 1590}
1437 1591
1438static int 1592static int
1439api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
1440{ 1594{
1441 dTHX;
1442 struct coro *coro; 1595 struct coro *coro;
1443 SV *sv_hook; 1596 SV *sv_hook;
1444 void (*xs_hook)(void); 1597 void (*xs_hook)(void);
1445 1598
1446 if (SvROK (coro_sv))
1447 coro_sv = SvRV (coro_sv);
1448
1449 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1450 1600
1451 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1452 return 0; 1602 return 0;
1453 1603
1454 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1455 1605
1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460 1608
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1609 coro_enq (aTHX_ coro);
1462 ++coro_nready; 1610 ++coro_nready;
1463 1611
1464 UNLOCK;
1465
1466 if (sv_hook) 1612 if (sv_hook)
1467 { 1613 {
1468 dSP; 1614 dSP;
1469 1615
1470 ENTER; 1616 ENTER;
1471 SAVETMPS; 1617 SAVETMPS;
1472 1618
1473 PUSHMARK (SP); 1619 PUSHMARK (SP);
1474 PUTBACK; 1620 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD); 1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1476 SPAGAIN;
1477 1622
1478 FREETMPS; 1623 FREETMPS;
1479 LEAVE; 1624 LEAVE;
1480 } 1625 }
1481 1626
… …
1484 1629
1485 return 1; 1630 return 1;
1486} 1631}
1487 1632
1488static int 1633static int
1489api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1490{ 1635{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1637}
1494 1638
1495static void 1639/* expects to own a reference to next->hv */
1640INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1497{ 1642{
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); 1643 SV *prev_sv = SvRV (coro_current);
1644
1542 ta->prev = SvSTATE (prev_sv); 1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1543 TRANSFER_CHECK (*ta); 1648 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1649
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1650 SvRV_set (coro_current, (SV *)next->hv);
1547 1651
1548 LOCK;
1549 free_coro_mortal (aTHX); 1652 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1653 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1654}
1553 1655
1554static void 1656static void
1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1658{
1659 for (;;)
1660 {
1661 SV *next_sv = coro_deq (aTHX);
1662
1663 if (expect_true (next_sv))
1664 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1670 else
1671 {
1672 next->flags &= ~CF_READY;
1673 --coro_nready;
1674
1675 prepare_schedule_to (aTHX_ ta, next);
1676 break;
1677 }
1678 }
1679 else
1680 {
1681 /* nothing to schedule: call the idle handler */
1682 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle)))
1684 {
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready;
1688 }
1689 else
1690 {
1691 dSP;
1692
1693 ENTER;
1694 SAVETMPS;
1695
1696 PUSHMARK (SP);
1697 PUTBACK;
1698 call_sv (sv_idle, G_VOID | G_DISCARD);
1699
1700 FREETMPS;
1701 LEAVE;
1702 }
1703 }
1704 }
1705}
1706
1707INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1709{
1557 api_ready (coro_current); 1710 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1711 prepare_schedule (aTHX_ ta);
1559} 1712}
1560 1713
1714INLINE void
1715prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1716{
1717 SV *prev = SvRV (coro_current);
1718
1719 if (coro_nready)
1720 {
1721 prepare_schedule (aTHX_ ta);
1722 api_ready (aTHX_ prev);
1723 }
1724 else
1725 prepare_nop (aTHX_ ta);
1726}
1727
1728static void
1729api_schedule (pTHX)
1730{
1731 struct coro_transfer_args ta;
1732
1733 prepare_schedule (aTHX_ &ta);
1734 TRANSFER (ta, 1);
1735}
1736
1737static void
1738api_schedule_to (pTHX_ SV *coro_sv)
1739{
1740 struct coro_transfer_args ta;
1741 struct coro *next = SvSTATE (coro_sv);
1742
1743 SvREFCNT_inc_NN (coro_sv);
1744 prepare_schedule_to (aTHX_ &ta, next);
1745}
1746
1561static int 1747static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1748api_cede (pTHX)
1563{ 1749{
1564 if (coro_nready) 1750 struct coro_transfer_args ta;
1565 { 1751
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1752 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1569 return 1; 1757 return 1;
1570 } 1758 }
1571 else 1759 else
1572 return 0; 1760 return 0;
1573} 1761}
1574 1762
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 1763static int
1586api_cede (void) 1764api_cede_notself (pTHX)
1587{ 1765{
1588 dTHX; 1766 if (coro_nready)
1767 {
1589 struct transfer_args ta; 1768 struct coro_transfer_args ta;
1590 1769
1591 prepare_cede (aTHX_ &ta); 1770 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1771 TRANSFER (ta, 1);
1596 return 1; 1772 return 1;
1597 } 1773 }
1598 else 1774 else
1599 return 0; 1775 return 0;
1600} 1776}
1601 1777
1602static int 1778static 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) 1779api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1780{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1781 struct coro *coro = SvSTATE (coro_sv);
1622 1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1785
1623 if (flags & CC_TRACE) 1786 if (flags & CC_TRACE)
1624 { 1787 {
1625 if (!coro->cctx) 1788 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1789 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1790 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1629 1792
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1794 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1796 {
… …
1638 else 1801 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 1802 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 1803 }
1641} 1804}
1642 1805
1806static void
1807coro_call_on_destroy (pTHX_ struct coro *coro)
1808{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811
1812 if (on_destroyp)
1813 {
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815
1816 while (AvFILLp (on_destroy) >= 0)
1817 {
1818 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP);
1822
1823 if (statusp)
1824 {
1825 int i;
1826 AV *status = (AV *)SvRV (*statusp);
1827 EXTEND (SP, AvFILLp (status) + 1);
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 }
1832
1833 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1835 }
1836 }
1837}
1838
1839static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845
1846 av_extend (av, items - 1);
1847 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i]));
1849
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1851
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager);
1854
1855 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat;
1857}
1858
1859/*****************************************************************************/
1860/* async pool handler */
1861
1643static int 1862static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1645{ 1864{
1646 AV *padlist; 1865 HV *hv = (HV *)SvRV (coro_current);
1647 AV *av = (AV *)mg->mg_obj; 1866 struct coro *coro = (struct coro *)frame->data;
1648 1867
1649 abort (); 1868 if (!coro->invoke_cb)
1869 return 1; /* loop till we have invoke */
1870 else
1871 {
1872 hv_store (hv, "desc", sizeof ("desc") - 1,
1873 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1874
1875 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1876
1877 {
1878 dSP;
1879 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1880 PUTBACK;
1881 }
1882
1883 SvREFCNT_dec (GvAV (PL_defgv));
1884 GvAV (PL_defgv) = coro->invoke_av;
1885 coro->invoke_av = 0;
1886
1887 return 0;
1888 }
1889}
1890
1891static void
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896
1897 if (expect_true (coro->saved_deffh))
1898 {
1899 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0;
1902
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1907 coro->invoke_av = newAV ();
1908
1909 frame->prepare = prepare_nop;
1910 }
1911 else
1912 {
1913 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1915
1916 coro->prio = 0;
1917
1918 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1919 api_trace (aTHX_ coro_current, 0);
1920
1921 frame->prepare = prepare_schedule;
1922 av_push (av_async_pool, SvREFCNT_inc (hv));
1923 }
1924 }
1925 else
1926 {
1927 /* first iteration, simply fall through */
1928 frame->prepare = prepare_nop;
1929 }
1930
1931 frame->check = slf_check_pool_handler;
1932 frame->data = (void *)coro;
1933}
1934
1935/*****************************************************************************/
1936/* rouse callback */
1937
1938#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1939
1940static void
1941coro_rouse_callback (pTHX_ CV *cv)
1942{
1943 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG;
1945
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 {
1948 /* first call, set args */
1949 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951
1952 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955
1956 /* better take a full copy of the arguments */
1957 while (items--)
1958 av_store (av, items, newSVsv (ST (items)));
1959 }
1960
1961 XSRETURN_EMPTY;
1962}
1963
1964static int
1965slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1966{
1967 SV *data = (SV *)frame->data;
1968
1969 if (CORO_THROW)
1970 return 0;
1971
1972 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1973 return 1;
1974
1975 /* now push all results on the stack */
1976 {
1977 dSP;
1978 AV *av = (AV *)SvRV (data);
1979 int i;
1980
1981 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984
1985 /* we have stolen the elements, so ste length to zero and free */
1986 AvFILLp (av) = -1;
1987 av_undef (av);
1988
1989 PUTBACK;
1990 }
1650 1991
1651 return 0; 1992 return 0;
1652} 1993}
1653 1994
1654static MGVTBL coro_gensub_vtbl = { 1995static void
1655 0, 0, 0, 0, 1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 1997{
1657}; 1998 SV *cb;
1999
2000 if (items)
2001 cb = arg [0];
2002 else
2003 {
2004 struct coro *coro = SvSTATE_current;
2005
2006 if (!coro->rouse_cb)
2007 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2008
2009 cb = sv_2mortal (coro->rouse_cb);
2010 coro->rouse_cb = 0;
2011 }
2012
2013 if (!SvROK (cb)
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,");
2017
2018 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG;
2021
2022 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait;
2025 }
2026}
2027
2028static SV *
2029coro_new_rouse_cb (pTHX)
2030{
2031 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2035
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */
2038
2039 SvREFCNT_dec (coro->rouse_cb);
2040 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2041
2042 return cb;
2043}
2044
2045/*****************************************************************************/
2046/* schedule-like-function opcode (SLF) */
2047
2048static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2049static const CV *slf_cv;
2050static SV **slf_argv;
2051static int slf_argc, slf_arga; /* count, allocated */
2052static I32 slf_ax; /* top of stack, for restore */
2053
2054/* this restores the stack in the case we patched the entersub, to */
2055/* recreate the stack frame as perl will on following calls */
2056/* since entersub cleared the stack */
2057static OP *
2058pp_restore (pTHX)
2059{
2060 int i;
2061 SV **SP = PL_stack_base + slf_ax;
2062
2063 PUSHMARK (SP);
2064
2065 EXTEND (SP, slf_argc + 1);
2066
2067 for (i = 0; i < slf_argc; ++i)
2068 PUSHs (sv_2mortal (slf_argv [i]));
2069
2070 PUSHs ((SV *)CvGV (slf_cv));
2071
2072 RETURNOP (slf_restore.op_first);
2073}
2074
2075static void
2076slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2077{
2078 SV **arg = (SV **)slf_frame.data;
2079
2080 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2081}
2082
2083static void
2084slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (items != 2)
2087 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2088
2089 frame->prepare = slf_prepare_transfer;
2090 frame->check = slf_check_nop;
2091 frame->data = (void *)arg; /* let's hope it will stay valid */
2092}
2093
2094static void
2095slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 frame->prepare = prepare_schedule;
2098 frame->check = slf_check_nop;
2099}
2100
2101static void
2102slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2103{
2104 struct coro *next = (struct coro *)slf_frame.data;
2105
2106 SvREFCNT_inc_NN (next->hv);
2107 prepare_schedule_to (aTHX_ ta, next);
2108}
2109
2110static void
2111slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 if (!items)
2114 croak ("Coro::schedule_to expects a coroutine argument, caught");
2115
2116 frame->data = (void *)SvSTATE (arg [0]);
2117 frame->prepare = slf_prepare_schedule_to;
2118 frame->check = slf_check_nop;
2119}
2120
2121static void
2122slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 api_ready (aTHX_ SvRV (coro_current));
2125
2126 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2127}
2128
2129static void
2130slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 frame->prepare = prepare_cede;
2133 frame->check = slf_check_nop;
2134}
2135
2136static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{
2139 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop;
2141}
2142
2143/*
2144 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same
2146 * stack offset
2147 * SLF stands for "schedule-like-function".
2148 */
2149static OP *
2150pp_slf (pTHX)
2151{
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153
2154 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare))
2158 {
2159 /* first iteration */
2160 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */
2163 SV *gv = *sp;
2164
2165 /* do a quick consistency check on the "function" object, and if it isn't */
2166 /* for us, divert to the real entersub */
2167 if (SvTYPE (gv) != SVt_PVGV
2168 || !GvCV (gv)
2169 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2170 return PL_ppaddr[OP_ENTERSUB](aTHX);
2171
2172 if (!(PL_op->op_flags & OPf_STACKED))
2173 {
2174 /* ampersand-form of call, use @_ instead of stack */
2175 AV *av = GvAV (PL_defgv);
2176 arg = AvARRAY (av);
2177 items = AvFILLp (av) + 1;
2178 }
2179
2180 /* now call the init function, which needs to set up slf_frame */
2181 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2182 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2183
2184 /* pop args */
2185 SP = PL_stack_base + POPMARK;
2186
2187 PUTBACK;
2188 }
2189
2190 /* now that we have a slf_frame, interpret it! */
2191 /* we use a callback system not to make the code needlessly */
2192 /* complicated, but so we can run multiple perl coros from one cctx */
2193
2194 do
2195 {
2196 struct coro_transfer_args ta;
2197
2198 slf_frame.prepare (aTHX_ &ta);
2199 TRANSFER (ta, 0);
2200
2201 checkmark = PL_stack_sp - PL_stack_base;
2202 }
2203 while (slf_frame.check (aTHX_ &slf_frame));
2204
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206
2207 /* exception handling */
2208 if (expect_false (CORO_THROW))
2209 {
2210 SV *exception = sv_2mortal (CORO_THROW);
2211
2212 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception);
2214 croak (0);
2215 }
2216
2217 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR)
2220 {
2221 dSP;
2222 SV **bot = PL_stack_base + checkmark;
2223
2224 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */
2227 bot [1] = *sp;
2228
2229 SP = bot + 1;
2230
2231 PUTBACK;
2232 }
2233
2234 return NORMAL;
2235}
2236
2237static void
2238api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2239{
2240 int i;
2241 SV **arg = PL_stack_base + ax;
2242 int items = PL_stack_sp - arg + 1;
2243
2244 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2245
2246 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2247 && PL_op->op_ppaddr != pp_slf)
2248 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2249
2250 CvFLAGS (cv) |= CVf_SLF;
2251 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2252 slf_cv = cv;
2253
2254 /* we patch the op, and then re-run the whole call */
2255 /* we have to put the same argument on the stack for this to work */
2256 /* and this will be done by pp_restore */
2257 slf_restore.op_next = (OP *)&slf_restore;
2258 slf_restore.op_type = OP_CUSTOM;
2259 slf_restore.op_ppaddr = pp_restore;
2260 slf_restore.op_first = PL_op;
2261
2262 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2263
2264 if (PL_op->op_flags & OPf_STACKED)
2265 {
2266 if (items > slf_arga)
2267 {
2268 slf_arga = items;
2269 free (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *));
2271 }
2272
2273 slf_argc = items;
2274
2275 for (i = 0; i < items; ++i)
2276 slf_argv [i] = SvREFCNT_inc (arg [i]);
2277 }
2278 else
2279 slf_argc = 0;
2280
2281 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283
2284 PL_op = (OP *)&slf_restore;
2285}
1658 2286
1659/*****************************************************************************/ 2287/*****************************************************************************/
1660/* PerlIO::cede */ 2288/* PerlIO::cede */
1661 2289
1662typedef struct 2290typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2318 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2319 double now = nvtime ();
1692 2320
1693 if (now >= self->next) 2321 if (now >= self->next)
1694 { 2322 {
1695 api_cede (); 2323 api_cede (aTHX);
1696 self->next = now + self->every; 2324 self->next = now + self->every;
1697 } 2325 }
1698 2326
1699 return PerlIOBuf_flush (aTHX_ f); 2327 return PerlIOBuf_flush (aTHX_ f);
1700} 2328}
… …
1729 PerlIOBuf_get_ptr, 2357 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2358 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2359 PerlIOBuf_set_ptrcnt,
1732}; 2360};
1733 2361
2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
2364
2365static SV *
2366coro_waitarray_new (pTHX_ int count)
2367{
2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV ();
2370 SV **ary;
2371
2372 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary;
2375 /*AvARRAY (av) = ary;*/
2376 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2377 AvMAX (av) = 1;
2378 AvFILLp (av) = 0;
2379 ary [0] = newSViv (count);
2380
2381 return newRV_noinc ((SV *)av);
2382}
2383
2384/* semaphore */
2385
2386static void
2387coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2388{
2389 SV *count_sv = AvARRAY (av)[0];
2390 IV count = SvIVX (count_sv);
2391
2392 count += adjust;
2393 SvIVX (count_sv) = count;
2394
2395 /* now wake up as many waiters as are expected to lock */
2396 while (count > 0 && AvFILLp (av) > 0)
2397 {
2398 SV *cb;
2399
2400 /* swap first two elements so we can shift a waiter */
2401 AvARRAY (av)[0] = AvARRAY (av)[1];
2402 AvARRAY (av)[1] = count_sv;
2403 cb = av_shift (av);
2404
2405 if (SvOBJECT (cb))
2406 {
2407 api_ready (aTHX_ cb);
2408 --count;
2409 }
2410 else if (SvTYPE (cb) == SVt_PVCV)
2411 {
2412 dSP;
2413 PUSHMARK (SP);
2414 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2415 PUTBACK;
2416 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2417 }
2418
2419 SvREFCNT_dec (cb);
2420 }
2421}
2422
2423static void
2424coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2425{
2426 /* call $sem->adjust (0) to possibly wake up some other waiters */
2427 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2428}
2429
2430static int
2431slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2432{
2433 AV *av = (AV *)frame->data;
2434 SV *count_sv = AvARRAY (av)[0];
2435
2436 /* if we are about to throw, don't actually acquire the lock, just throw */
2437 if (CORO_THROW)
2438 return 0;
2439 else if (SvIVX (count_sv) > 0)
2440 {
2441 SvSTATE_current->on_destroy = 0;
2442
2443 if (acquire)
2444 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2445 else
2446 coro_semaphore_adjust (aTHX_ av, 0);
2447
2448 return 0;
2449 }
2450 else
2451 {
2452 int i;
2453 /* if we were woken up but can't down, we look through the whole */
2454 /* waiters list and only add us if we aren't in there already */
2455 /* this avoids some degenerate memory usage cases */
2456
2457 for (i = 1; i <= AvFILLp (av); ++i)
2458 if (AvARRAY (av)[i] == SvRV (coro_current))
2459 return 1;
2460
2461 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2462 return 1;
2463 }
2464}
2465
2466static int
2467slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2468{
2469 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2470}
2471
2472static int
2473slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2474{
2475 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2476}
2477
2478static void
2479slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 AV *av = (AV *)SvRV (arg [0]);
2482
2483 if (SvIVX (AvARRAY (av)[0]) > 0)
2484 {
2485 frame->data = (void *)av;
2486 frame->prepare = prepare_nop;
2487 }
2488 else
2489 {
2490 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2491
2492 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2493 frame->prepare = prepare_schedule;
2494
2495 /* to avoid race conditions when a woken-up coro gets terminated */
2496 /* we arrange for a temporary on_destroy that calls adjust (0) */
2497 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2498 }
2499}
2500
2501static void
2502slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_down;
2506}
2507
2508static void
2509slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2510{
2511 if (items >= 2)
2512 {
2513 /* callback form */
2514 AV *av = (AV *)SvRV (arg [0]);
2515 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2516
2517 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2518
2519 if (SvIVX (AvARRAY (av)[0]) > 0)
2520 coro_semaphore_adjust (aTHX_ av, 0);
2521
2522 frame->prepare = prepare_nop;
2523 frame->check = slf_check_nop;
2524 }
2525 else
2526 {
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_wait;
2529 }
2530}
2531
2532/* signal */
2533
2534static void
2535coro_signal_wake (pTHX_ AV *av, int count)
2536{
2537 SvIVX (AvARRAY (av)[0]) = 0;
2538
2539 /* now signal count waiters */
2540 while (count > 0 && AvFILLp (av) > 0)
2541 {
2542 SV *cb;
2543
2544 /* swap first two elements so we can shift a waiter */
2545 cb = AvARRAY (av)[0];
2546 AvARRAY (av)[0] = AvARRAY (av)[1];
2547 AvARRAY (av)[1] = cb;
2548
2549 cb = av_shift (av);
2550
2551 api_ready (aTHX_ cb);
2552 sv_setiv (cb, 0); /* signal waiter */
2553 SvREFCNT_dec (cb);
2554
2555 --count;
2556 }
2557}
2558
2559static int
2560slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2561{
2562 /* if we are about to throw, also stop waiting */
2563 return SvROK ((SV *)frame->data) && !CORO_THROW;
2564}
2565
2566static void
2567slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2568{
2569 AV *av = (AV *)SvRV (arg [0]);
2570
2571 if (SvIVX (AvARRAY (av)[0]))
2572 {
2573 SvIVX (AvARRAY (av)[0]) = 0;
2574 frame->prepare = prepare_nop;
2575 frame->check = slf_check_nop;
2576 }
2577 else
2578 {
2579 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2580
2581 av_push (av, waiter);
2582
2583 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2584 frame->prepare = prepare_schedule;
2585 frame->check = slf_check_signal_wait;
2586 }
2587}
2588
2589/*****************************************************************************/
2590/* Coro::AIO */
2591
2592#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2593
2594/* helper storage struct */
2595struct io_state
2596{
2597 int errorno;
2598 I32 laststype; /* U16 in 5.10.0 */
2599 int laststatval;
2600 Stat_t statcache;
2601};
2602
2603static void
2604coro_aio_callback (pTHX_ CV *cv)
2605{
2606 dXSARGS;
2607 AV *state = (AV *)GENSUB_ARG;
2608 SV *coro = av_pop (state);
2609 SV *data_sv = newSV (sizeof (struct io_state));
2610
2611 av_extend (state, items - 1);
2612
2613 sv_upgrade (data_sv, SVt_PV);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616
2617 {
2618 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2619
2620 data->errorno = errno;
2621 data->laststype = PL_laststype;
2622 data->laststatval = PL_laststatval;
2623 data->statcache = PL_statcache;
2624 }
2625
2626 /* now build the result vector out of all the parameters and the data_sv */
2627 {
2628 int i;
2629
2630 for (i = 0; i < items; ++i)
2631 av_push (state, SvREFCNT_inc_NN (ST (i)));
2632 }
2633
2634 av_push (state, data_sv);
2635
2636 api_ready (aTHX_ coro);
2637 SvREFCNT_dec (coro);
2638 SvREFCNT_dec ((AV *)state);
2639}
2640
2641static int
2642slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2643{
2644 AV *state = (AV *)frame->data;
2645
2646 /* if we are about to throw, return early */
2647 /* this does not cancel the aio request, but at least */
2648 /* it quickly returns */
2649 if (CORO_THROW)
2650 return 0;
2651
2652 /* one element that is an RV? repeat! */
2653 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2654 return 1;
2655
2656 /* restore status */
2657 {
2658 SV *data_sv = av_pop (state);
2659 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2660
2661 errno = data->errorno;
2662 PL_laststype = data->laststype;
2663 PL_laststatval = data->laststatval;
2664 PL_statcache = data->statcache;
2665
2666 SvREFCNT_dec (data_sv);
2667 }
2668
2669 /* push result values */
2670 {
2671 dSP;
2672 int i;
2673
2674 EXTEND (SP, AvFILLp (state) + 1);
2675 for (i = 0; i <= AvFILLp (state); ++i)
2676 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2677
2678 PUTBACK;
2679 }
2680
2681 return 0;
2682}
2683
2684static void
2685slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2688 SV *coro_hv = SvRV (coro_current);
2689 struct coro *coro = SvSTATE_hv (coro_hv);
2690
2691 /* put our coroutine id on the state arg */
2692 av_push (state, SvREFCNT_inc_NN (coro_hv));
2693
2694 /* first see whether we have a non-zero priority and set it as AIO prio */
2695 if (coro->prio)
2696 {
2697 dSP;
2698
2699 static SV *prio_cv;
2700 static SV *prio_sv;
2701
2702 if (expect_false (!prio_cv))
2703 {
2704 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2705 prio_sv = newSViv (0);
2706 }
2707
2708 PUSHMARK (SP);
2709 sv_setiv (prio_sv, coro->prio);
2710 XPUSHs (prio_sv);
2711
2712 PUTBACK;
2713 call_sv (prio_cv, G_VOID | G_DISCARD);
2714 }
2715
2716 /* now call the original request */
2717 {
2718 dSP;
2719 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2720 int i;
2721
2722 PUSHMARK (SP);
2723
2724 /* first push all args to the stack */
2725 EXTEND (SP, items + 1);
2726
2727 for (i = 0; i < items; ++i)
2728 PUSHs (arg [i]);
2729
2730 /* now push the callback closure */
2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2732
2733 /* now call the AIO function - we assume our request is uncancelable */
2734 PUTBACK;
2735 call_sv ((SV *)req, G_VOID | G_DISCARD);
2736 }
2737
2738 /* now that the requets is going, we loop toll we have a result */
2739 frame->data = (void *)state;
2740 frame->prepare = prepare_schedule;
2741 frame->check = slf_check_aio_req;
2742}
2743
2744static void
2745coro_aio_req_xs (pTHX_ CV *cv)
2746{
2747 dXSARGS;
2748
2749 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2750
2751 XSRETURN_EMPTY;
2752}
2753
2754/*****************************************************************************/
2755
2756#if CORO_CLONE
2757# include "clone.c"
2758#endif
1734 2759
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 2761
1737PROTOTYPES: DISABLE 2762PROTOTYPES: DISABLE
1738 2763
1739BOOT: 2764BOOT:
1740{ 2765{
1741#ifdef USE_ITHREADS 2766#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 2767# if CORO_PTHREAD
2768 coro_thx = PERL_GET_CONTEXT;
2769# endif
1743#endif 2770#endif
1744 BOOT_PAGESIZE; 2771 BOOT_PAGESIZE;
2772
2773 cctx_current = cctx_new_empty ();
1745 2774
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748 2777
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2778 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1765 main_top_env = PL_top_env; 2794 main_top_env = PL_top_env;
1766 2795
1767 while (main_top_env->je_prev) 2796 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 2797 main_top_env = main_top_env->je_prev;
1769 2798
2799 {
2800 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2801
2802 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2803 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2804
2805 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2806 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2807 }
2808
1770 coroapi.ver = CORO_API_VERSION; 2809 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION; 2810 coroapi.rev = CORO_API_REVISION;
2811
1772 coroapi.transfer = api_transfer; 2812 coroapi.transfer = api_transfer;
2813
2814 coroapi.sv_state = SvSTATE_;
2815 coroapi.execute_slf = api_execute_slf;
2816 coroapi.prepare_nop = prepare_nop;
2817 coroapi.prepare_schedule = prepare_schedule;
2818 coroapi.prepare_cede = prepare_cede;
2819 coroapi.prepare_cede_notself = prepare_cede_notself;
1773 2820
1774 { 2821 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2822 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776 2823
1777 if (!svp) croak ("Time::HiRes is required"); 2824 if (!svp) croak ("Time::HiRes is required");
… …
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1784} 2831}
1785 2832
1786SV * 2833SV *
1787new (char *klass, ...) 2834new (char *klass, ...)
2835 ALIAS:
2836 Coro::new = 1
1788 CODE: 2837 CODE:
1789{ 2838{
1790 struct coro *coro; 2839 struct coro *coro;
1791 MAGIC *mg; 2840 MAGIC *mg;
1792 HV *hv; 2841 HV *hv;
2842 CV *cb;
1793 int i; 2843 int i;
2844
2845 if (items > 1)
2846 {
2847 cb = coro_sv_2cv (aTHX_ ST (1));
2848
2849 if (!ix)
2850 {
2851 if (CvISXSUB (cb))
2852 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2853
2854 if (!CvROOT (cb))
2855 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2856 }
2857 }
1794 2858
1795 Newz (0, coro, 1, struct coro); 2859 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV (); 2860 coro->args = newAV ();
1797 coro->flags = CF_NEW; 2861 coro->flags = CF_NEW;
1798 2862
… …
1803 coro->hv = hv = newHV (); 2867 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2868 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP; 2869 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807 2871
2872 if (items > 1)
2873 {
1808 av_extend (coro->args, items - 1); 2874 av_extend (coro->args, items - 1 + ix - 1);
2875
2876 if (ix)
2877 {
2878 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2879 cb = cv_coro_run;
2880 }
2881
2882 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2883
1809 for (i = 1; i < items; i++) 2884 for (i = 2; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i))); 2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
1811} 2887}
1812 OUTPUT: 2888 OUTPUT:
1813 RETVAL 2889 RETVAL
1814 2890
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 2891void
1819_set_stacklevel (...) 2892transfer (...)
1820 ALIAS: 2893 PROTOTYPE: $$
1821 Coro::State::transfer = 1 2894 CODE:
1822 Coro::schedule = 2 2895 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 2896
1867bool 2897bool
1868_destroy (SV *coro_sv) 2898_destroy (SV *coro_sv)
1869 CODE: 2899 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875_exit (int code) 2905_exit (int code)
1876 PROTOTYPE: $ 2906 PROTOTYPE: $
1877 CODE: 2907 CODE:
1878 _exit (code); 2908 _exit (code);
1879 2909
2910SV *
2911clone (Coro::State coro)
2912 CODE:
2913{
2914#if CORO_CLONE
2915 struct coro *ncoro = coro_clone (coro);
2916 MAGIC *mg;
2917 /* TODO: too much duplication */
2918 ncoro->hv = newHV ();
2919 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2920 mg->mg_flags |= MGf_DUP;
2921 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2922#else
2923 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2924#endif
2925}
2926 OUTPUT:
2927 RETVAL
2928
1880int 2929int
1881cctx_stacksize (int new_stacksize = 0) 2930cctx_stacksize (int new_stacksize = 0)
2931 PROTOTYPE: ;$
1882 CODE: 2932 CODE:
1883 RETVAL = coro_stacksize; 2933 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 2934 if (new_stacksize)
2935 {
1885 coro_stacksize = new_stacksize; 2936 cctx_stacksize = new_stacksize;
2937 ++cctx_gen;
2938 }
1886 OUTPUT: 2939 OUTPUT:
1887 RETVAL 2940 RETVAL
1888 2941
1889int 2942int
2943cctx_max_idle (int max_idle = 0)
2944 PROTOTYPE: ;$
2945 CODE:
2946 RETVAL = cctx_max_idle;
2947 if (max_idle > 1)
2948 cctx_max_idle = max_idle;
2949 OUTPUT:
2950 RETVAL
2951
2952int
1890cctx_count () 2953cctx_count ()
2954 PROTOTYPE:
1891 CODE: 2955 CODE:
1892 RETVAL = cctx_count; 2956 RETVAL = cctx_count;
1893 OUTPUT: 2957 OUTPUT:
1894 RETVAL 2958 RETVAL
1895 2959
1896int 2960int
1897cctx_idle () 2961cctx_idle ()
2962 PROTOTYPE:
1898 CODE: 2963 CODE:
1899 RETVAL = cctx_idle; 2964 RETVAL = cctx_idle;
1900 OUTPUT: 2965 OUTPUT:
1901 RETVAL 2966 RETVAL
1902 2967
1903void 2968void
1904list () 2969list ()
2970 PROTOTYPE:
1905 PPCODE: 2971 PPCODE:
1906{ 2972{
1907 struct coro *coro; 2973 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 2974 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 2975 if (coro->hv)
… …
1968 RETVAL = boolSV (coro->flags & ix); 3034 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 3035 OUTPUT:
1970 RETVAL 3036 RETVAL
1971 3037
1972void 3038void
3039throw (Coro::State self, SV *throw = &PL_sv_undef)
3040 PROTOTYPE: $;$
3041 CODE:
3042{
3043 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except;
3045 SvREFCNT_dec (*throwp);
3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3047}
3048
3049void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3050api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3051 PROTOTYPE: $;$
3052 C_ARGS: aTHX_ coro, flags
1974 3053
1975SV * 3054SV *
1976has_cctx (Coro::State coro) 3055has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 3056 PROTOTYPE: $
1978 CODE: 3057 CODE:
1979 RETVAL = boolSV (!!coro->cctx); 3058 /* maybe manage the running flag differently */
3059 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1980 OUTPUT: 3060 OUTPUT:
1981 RETVAL 3061 RETVAL
1982 3062
1983int 3063int
1984is_traced (Coro::State coro) 3064is_traced (Coro::State coro)
… …
1986 CODE: 3066 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3067 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 3068 OUTPUT:
1989 RETVAL 3069 RETVAL
1990 3070
1991IV 3071UV
1992rss (Coro::State coro) 3072rss (Coro::State coro)
1993 PROTOTYPE: $ 3073 PROTOTYPE: $
1994 ALIAS: 3074 ALIAS:
1995 usecount = 1 3075 usecount = 1
1996 CODE: 3076 CODE:
… …
2002 OUTPUT: 3082 OUTPUT:
2003 RETVAL 3083 RETVAL
2004 3084
2005void 3085void
2006force_cctx () 3086force_cctx ()
3087 PROTOTYPE:
2007 CODE: 3088 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 3089 cctx_current->idle_sp = 0;
2010
2011void
2012throw (Coro::State self, SV *throw = &PL_sv_undef)
2013 PROTOTYPE: $;$
2014 CODE:
2015 SvREFCNT_dec (self->throw);
2016 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2017 3090
2018void 3091void
2019swap_defsv (Coro::State self) 3092swap_defsv (Coro::State self)
2020 PROTOTYPE: $ 3093 PROTOTYPE: $
2021 ALIAS: 3094 ALIAS:
2022 swap_defav = 1 3095 swap_defav = 1
2023 CODE: 3096 CODE:
2024 if (!self->slot) 3097 if (!self->slot)
2025 croak ("cannot swap state with coroutine that has no saved state"); 3098 croak ("cannot swap state with coroutine that has no saved state,");
2026 else 3099 else
2027 { 3100 {
2028 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3101 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2029 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2030 3103
2031 SV *tmp = *src; *src = *dst; *dst = tmp; 3104 SV *tmp = *src; *src = *dst; *dst = tmp;
2032 } 3105 }
2033 3106
3107
2034MODULE = Coro::State PACKAGE = Coro 3108MODULE = Coro::State PACKAGE = Coro
2035 3109
2036BOOT: 3110BOOT:
2037{ 3111{
2038 int i; 3112 int i;
2039 3113
2040 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2041 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2042 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2043 3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2044 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2045 SvREADONLY_on (coro_current); 3119 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3120 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3121 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3122 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3123
3124 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3125 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3126 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3127 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2046 3128
2047 coro_stash = gv_stashpv ("Coro", TRUE); 3129 coro_stash = gv_stashpv ("Coro", TRUE);
2048 3130
2049 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2050 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2055 3137
2056 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3138 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2057 coro_ready[i] = newAV (); 3139 coro_ready[i] = newAV ();
2058 3140
2059 { 3141 {
2060 SV *sv = perl_get_sv ("Coro::API", TRUE); 3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2061 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2062 3143
2063 coroapi.schedule = api_schedule; 3144 coroapi.schedule = api_schedule;
3145 coroapi.schedule_to = api_schedule_to;
2064 coroapi.cede = api_cede; 3146 coroapi.cede = api_cede;
2065 coroapi.cede_notself = api_cede_notself; 3147 coroapi.cede_notself = api_cede_notself;
2066 coroapi.ready = api_ready; 3148 coroapi.ready = api_ready;
2067 coroapi.is_ready = api_is_ready; 3149 coroapi.is_ready = api_is_ready;
2068 coroapi.nready = &coro_nready; 3150 coroapi.nready = coro_nready;
2069 coroapi.current = coro_current; 3151 coroapi.current = coro_current;
2070 3152
2071 GCoroAPI = &coroapi; 3153 /*GCoroAPI = &coroapi;*/
2072 sv_setiv (sv, (IV)&coroapi); 3154 sv_setiv (sv, (IV)&coroapi);
2073 SvREADONLY_on (sv); 3155 SvREADONLY_on (sv);
2074 } 3156 }
2075} 3157}
3158
3159void
3160terminate (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3163
3164void
3165schedule (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3168
3169void
3170schedule_to (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3173
3174void
3175cede_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3178
3179void
3180cede (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede);
3183
3184void
3185cede_notself (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3188
3189void
3190_cancel (Coro::State self)
3191 CODE:
3192 coro_state_destroy (aTHX_ self);
3193 coro_call_on_destroy (aTHX_ self);
2076 3194
2077void 3195void
2078_set_current (SV *current) 3196_set_current (SV *current)
2079 PROTOTYPE: $ 3197 PROTOTYPE: $
2080 CODE: 3198 CODE:
… …
2083 3201
2084void 3202void
2085_set_readyhook (SV *hook) 3203_set_readyhook (SV *hook)
2086 PROTOTYPE: $ 3204 PROTOTYPE: $
2087 CODE: 3205 CODE:
2088 LOCK;
2089 SvREFCNT_dec (coro_readyhook); 3206 SvREFCNT_dec (coro_readyhook);
2090 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2091 UNLOCK;
2092 3208
2093int 3209int
2094prio (Coro::State coro, int newprio = 0) 3210prio (Coro::State coro, int newprio = 0)
3211 PROTOTYPE: $;$
2095 ALIAS: 3212 ALIAS:
2096 nice = 1 3213 nice = 1
2097 CODE: 3214 CODE:
2098{ 3215{
2099 RETVAL = coro->prio; 3216 RETVAL = coro->prio;
… …
2114 3231
2115SV * 3232SV *
2116ready (SV *self) 3233ready (SV *self)
2117 PROTOTYPE: $ 3234 PROTOTYPE: $
2118 CODE: 3235 CODE:
2119 RETVAL = boolSV (api_ready (self)); 3236 RETVAL = boolSV (api_ready (aTHX_ self));
2120 OUTPUT: 3237 OUTPUT:
2121 RETVAL 3238 RETVAL
2122 3239
2123int 3240int
2124nready (...) 3241nready (...)
… …
2126 CODE: 3243 CODE:
2127 RETVAL = coro_nready; 3244 RETVAL = coro_nready;
2128 OUTPUT: 3245 OUTPUT:
2129 RETVAL 3246 RETVAL
2130 3247
2131# for async_pool speedup
2132void 3248void
2133_pool_1 (SV *cb) 3249_pool_handler (...)
2134 CODE: 3250 CODE:
2135{ 3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
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 3252
2143 if (!invoke) 3253void
3254async_pool (SV *cv, ...)
3255 PROTOTYPE: &@
3256 PPCODE:
3257{
3258 HV *hv = (HV *)av_pop (av_async_pool);
3259 AV *av = newAV ();
3260 SV *cb = ST (0);
3261 int i;
3262
3263 av_extend (av, items - 2);
3264 for (i = 1; i < items; ++i)
3265 av_push (av, SvREFCNT_inc_NN (ST (i)));
3266
3267 if ((SV *)hv == &PL_sv_undef)
2144 { 3268 {
2145 SV *old = PL_diehook; 3269 PUSHMARK (SP);
2146 PL_diehook = 0; 3270 EXTEND (SP, 2);
2147 SvREFCNT_dec (old); 3271 PUSHs (sv_Coro);
2148 croak ("\3async_pool terminate\2\n"); 3272 PUSHs ((SV *)cv_pool_handler);
3273 PUTBACK;
3274 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3275 SPAGAIN;
3276
3277 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2149 } 3278 }
2150 3279
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 { 3280 {
2164 av_fill (defav, len - 1); 3281 struct coro *coro = SvSTATE_hv (hv);
2165 for (i = 0; i < len; ++i) 3282
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3283 assert (!coro->invoke_cb);
3284 assert (!coro->invoke_av);
3285 coro->invoke_cb = SvREFCNT_inc (cb);
3286 coro->invoke_av = av;
2167 } 3287 }
2168 3288
3289 api_ready (aTHX_ (SV *)hv);
3290
3291 if (GIMME_V != G_VOID)
3292 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3293 else
2169 SvREFCNT_dec (invoke); 3294 SvREFCNT_dec (hv);
2170} 3295}
2171 3296
2172void 3297SV *
2173_pool_2 (SV *cb) 3298rouse_cb ()
3299 PROTOTYPE:
2174 CODE: 3300 CODE:
2175{ 3301 RETVAL = coro_new_rouse_cb (aTHX);
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: 3302 OUTPUT:
2248 RETVAL 3303 RETVAL
2249 3304
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 3305void
2256_get_state (SV *self) 3306rouse_wait (...)
3307 PROTOTYPE: ;$
2257 PPCODE: 3308 PPCODE:
2258{ 3309 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 3310
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271 3311
2272 av_extend (av, AvFILLp (defav) + 1 + 1); 3312MODULE = Coro::State PACKAGE = PerlIO::cede
2273 3313
2274 for (i = 0; i <= AvFILLp (defav); ++i) 3314BOOT:
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3315 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2276 3316
2277 av_push (av, data_sv);
2278 3317
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3318MODULE = Coro::State PACKAGE = Coro::Semaphore
2280 3319
2281 api_ready (self); 3320SV *
2282} 3321new (SV *klass, SV *count = 0)
3322 CODE:
3323 RETVAL = sv_bless (
3324 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3325 GvSTASH (CvGV (cv))
3326 );
3327 OUTPUT:
3328 RETVAL
3329
3330# helper for Coro::Channel
3331SV *
3332_alloc (int count)
3333 CODE:
3334 RETVAL = coro_waitarray_new (aTHX_ count);
3335 OUTPUT:
3336 RETVAL
3337
3338SV *
3339count (SV *self)
3340 CODE:
3341 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3342 OUTPUT:
3343 RETVAL
2283 3344
2284void 3345void
2285_set_state (SV *state) 3346up (SV *self, int adjust = 1)
2286 PROTOTYPE: $ 3347 ALIAS:
3348 adjust = 1
3349 CODE:
3350 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3351
3352void
3353down (...)
3354 CODE:
3355 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3356
3357void
3358wait (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3361
3362void
3363try (SV *self)
3364 PPCODE:
3365{
3366 AV *av = (AV *)SvRV (self);
3367 SV *count_sv = AvARRAY (av)[0];
3368 IV count = SvIVX (count_sv);
3369
3370 if (count > 0)
3371 {
3372 --count;
3373 SvIVX (count_sv) = count;
3374 XSRETURN_YES;
3375 }
3376 else
3377 XSRETURN_NO;
3378}
3379
3380void
3381waiters (SV *self)
3382 PPCODE:
3383{
3384 AV *av = (AV *)SvRV (self);
3385 int wcount = AvFILLp (av) + 1 - 1;
3386
3387 if (GIMME_V == G_SCALAR)
3388 XPUSHs (sv_2mortal (newSViv (wcount)));
3389 else
3390 {
3391 int i;
3392 EXTEND (SP, wcount);
3393 for (i = 1; i <= wcount; ++i)
3394 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3395 }
3396}
3397
3398MODULE = Coro::State PACKAGE = Coro::Signal
3399
3400SV *
3401new (SV *klass)
2287 PPCODE: 3402 CODE:
3403 RETVAL = sv_bless (
3404 coro_waitarray_new (aTHX_ 0),
3405 GvSTASH (CvGV (cv))
3406 );
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411wait (...)
3412 CODE:
3413 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3414
3415void
3416broadcast (SV *self)
3417 CODE:
2288{ 3418{
2289 AV *av = (AV *)SvRV (state); 3419 AV *av = (AV *)SvRV (self);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3420 coro_signal_wake (aTHX_ av, AvFILLp (av));
2291 int i; 3421}
2292 3422
2293 errno = data->errorno; 3423void
2294 PL_laststype = data->laststype; 3424send (SV *self)
2295 PL_laststatval = data->laststatval; 3425 CODE:
2296 PL_statcache = data->statcache; 3426{
3427 AV *av = (AV *)SvRV (self);
2297 3428
2298 EXTEND (SP, AvFILLp (av)); 3429 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 3430 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3431 else
3432 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 3433}
3434
3435IV
3436awaited (SV *self)
3437 CODE:
3438 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3439 OUTPUT:
3440 RETVAL
2302 3441
2303 3442
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 3443MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 3444
2306BOOT: 3445BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3446 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 3447
2309SV * 3448void
2310_schedule (...) 3449_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 3450 CODE:
2313{ 3451{
2314 static int incede; 3452 static int incede;
2315 3453
2316 api_cede_notself (); 3454 api_cede_notself (aTHX);
2317 3455
2318 ++incede; 3456 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 3457 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 3458 ;
2321 3459
2322 sv_setsv (sv_activity, &PL_sv_undef); 3460 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 3461 if (coro_nready >= incede)
2324 { 3462 {
2325 PUSHMARK (SP); 3463 PUSHMARK (SP);
2326 PUTBACK; 3464 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3465 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 3466 }
2330 3467
2331 --incede; 3468 --incede;
2332} 3469}
2333 3470
2334 3471
2335MODULE = Coro::State PACKAGE = PerlIO::cede 3472MODULE = Coro::State PACKAGE = Coro::AIO
2336 3473
2337BOOT: 3474void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3475_register (char *target, char *proto, SV *req)
3476 CODE:
3477{
3478 CV *req_cv = coro_sv_2cv (aTHX_ req);
3479 /* newXSproto doesn't return the CV on 5.8 */
3480 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3481 sv_setpv ((SV *)slf_cv, proto);
3482 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3483}
3484

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines