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Comparing Coro/Coro/State.xs (file contents):
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC vs.
Revision 1.326 by root, Mon Nov 24 04:56:38 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/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
174static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 184static SV *rv_diehook;
177static SV *rv_warnhook; 185static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
179 187
180/* async_pool helper stuff */ 188/* async_pool helper stuff */
181static SV *sv_pool_rss; 189static SV *sv_pool_rss;
182static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
183static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
184 196
185/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
186static SV *sv_activity; 198static SV *sv_activity;
187 199
188static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 210};
199 211
200/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 213typedef struct coro_cctx
214{
202 struct coro_cctx *next; 215 struct coro_cctx *next;
203 216
204 /* the stack */ 217 /* the stack */
205 void *sptr; 218 void *sptr;
206 size_t ssize; 219 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 224 JMPENV *top_env;
212 coro_context cctx; 225 coro_context cctx;
213 226
227 U32 gen;
214#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
219 237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
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;
233#define VAR(name,type) type name; 252#define VAR(name,type) type name;
… …
237 256
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 257#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 258
240/* this is a structure representing a perl-level coroutine */ 259/* this is a structure representing a perl-level coroutine */
241struct coro { 260struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 261 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 262 coro_cctx *cctx;
244 263
245 /* process data */ 264 /* state data */
265 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 266 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 267 perl_slots *slot; /* basically the saved sp */
248 268
269 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 270 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 271 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 272 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 273 HV *hv; /* the perl hash associated with this coro, if any */
274 void (*on_destroy)(pTHX_ struct coro *coro);
253 275
254 /* statistics */ 276 /* statistics */
255 int usecount; /* number of transfers to this coro */ 277 int usecount; /* number of transfers to this coro */
256 278
257 /* coro process data */ 279 /* coro process data */
258 int prio; 280 int prio;
259 SV *throw; /* exception to be thrown */ 281 SV *except; /* exception to be thrown */
282 SV *rouse_cb;
260 283
261 /* async_pool */ 284 /* async_pool */
262 SV *saved_deffh; 285 SV *saved_deffh;
286 SV *invoke_cb;
287 AV *invoke_av;
263 288
264 /* linked list */ 289 /* linked list */
265 struct coro *next, *prev; 290 struct coro *next, *prev;
266}; 291};
267 292
268typedef struct coro *Coro__State; 293typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 294typedef struct coro *Coro__State_or_hashref;
295
296/* the following variables are effectively part of the perl context */
297/* and get copied between struct coro and these variables */
298/* the mainr easonw e don't support windows process emulation */
299static struct CoroSLF slf_frame; /* the current slf frame */
270 300
271/** Coro ********************************************************************/ 301/** Coro ********************************************************************/
272 302
273#define PRIO_MAX 3 303#define PRIO_MAX 3
274#define PRIO_HIGH 1 304#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 308#define PRIO_MIN -4
279 309
280/* for Coro.pm */ 310/* for Coro.pm */
281static SV *coro_current; 311static SV *coro_current;
282static SV *coro_readyhook; 312static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready; 314static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 315static struct coro *coro_first;
316#define coro_nready coroapi.nready
286 317
287/** lowlevel stuff **********************************************************/ 318/** lowlevel stuff **********************************************************/
288 319
289static SV * 320static SV *
290coro_get_sv (pTHX_ const char *name, int create) 321coro_get_sv (pTHX_ const char *name, int create)
… …
314 get_hv (name, create); 345 get_hv (name, create);
315#endif 346#endif
316 return get_hv (name, create); 347 return get_hv (name, create);
317} 348}
318 349
350/* may croak */
351INLINE CV *
352coro_sv_2cv (pTHX_ SV *sv)
353{
354 HV *st;
355 GV *gvp;
356 return sv_2cv (sv, &st, &gvp, 0);
357}
358
319static AV * 359static AV *
320coro_clone_padlist (pTHX_ CV *cv) 360coro_derive_padlist (pTHX_ CV *cv)
321{ 361{
322 AV *padlist = CvPADLIST (cv); 362 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 363 AV *newpadlist, *newpad;
324 364
325 newpadlist = newAV (); 365 newpadlist = newAV ();
… …
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 415 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 416
377 return 0; 417 return 0;
378} 418}
379 419
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext 420#define CORO_MAGIC_type_cv 26
381#define CORO_MAGIC_type_state PERL_MAGIC_ext 421#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 422
383static MGVTBL coro_cv_vtbl = { 423static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 424 0, 0, 0, 0,
385 coro_cv_free 425 coro_cv_free
386}; 426};
387 427
428#define CORO_MAGIC_NN(sv, type) \
429 (expect_true (SvMAGIC (sv)->mg_type == type) \
430 ? SvMAGIC (sv) \
431 : mg_find (sv, type))
432
388#define CORO_MAGIC(sv,type) \ 433#define CORO_MAGIC(sv, type) \
389 SvMAGIC (sv) \ 434 (expect_true (SvMAGIC (sv)) \
390 ? SvMAGIC (sv)->mg_type == type \ 435 ? CORO_MAGIC_NN (sv, type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0 436 : 0)
394 437
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 438#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 439#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
397 440
398static struct coro * 441INLINE struct coro *
399SvSTATE_ (pTHX_ SV *coro) 442SvSTATE_ (pTHX_ SV *coro)
400{ 443{
401 HV *stash; 444 HV *stash;
402 MAGIC *mg; 445 MAGIC *mg;
403 446
… …
418 mg = CORO_MAGIC_state (coro); 461 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr; 462 return (struct coro *)mg->mg_ptr;
420} 463}
421 464
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 465#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
466
467/* faster than SvSTATE, but expects a coroutine hv */
468#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
469#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
423 470
424/* the next two functions merely cache the padlists */ 471/* the next two functions merely cache the padlists */
425static void 472static void
426get_padlist (pTHX_ CV *cv) 473get_padlist (pTHX_ CV *cv)
427{ 474{
… …
433 else 480 else
434 { 481 {
435#if CORO_PREFER_PERL_FUNCTIONS 482#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 483 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 484 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 485 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 486 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 487 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 488 SvREFCNT_dec (cp);
442#else 489#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 490 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 491#endif
445 } 492 }
446} 493}
447 494
448static void 495static void
… …
494 CvPADLIST (cv) = (AV *)POPs; 541 CvPADLIST (cv) = (AV *)POPs;
495 } 542 }
496 543
497 PUTBACK; 544 PUTBACK;
498 } 545 }
546
547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
499} 549}
500 550
501static void 551static void
502save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
503{ 553{
554 c->except = CORO_THROW;
555 c->slf_frame = slf_frame;
556
504 { 557 {
505 dSP; 558 dSP;
506 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 560 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 561 PERL_SI *top_si = PL_curstackinfo;
… …
575 #undef VAR 628 #undef VAR
576 } 629 }
577} 630}
578 631
579/* 632/*
580 * allocate various perl stacks. This is an exact copy 633 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 634 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 635 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 636 * not usually need a lot of stackspace.
584 */ 637 */
585#if CORO_PREFER_PERL_FUNCTIONS 638#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 639# define coro_init_stacks(thx) init_stacks ()
587#else 640#else
588static void 641static void
589coro_init_stacks (pTHX) 642coro_init_stacks (pTHX)
590{ 643{
591 PL_curstackinfo = new_stackinfo(32, 8); 644 PL_curstackinfo = new_stackinfo(32, 8);
… …
628 681
629/* 682/*
630 * destroy the stacks, the callchain etc... 683 * destroy the stacks, the callchain etc...
631 */ 684 */
632static void 685static void
633coro_destroy_stacks (pTHX) 686coro_destruct_stacks (pTHX)
634{ 687{
635 while (PL_curstackinfo->si_next) 688 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 689 PL_curstackinfo = PL_curstackinfo->si_next;
637 690
638 while (PL_curstackinfo) 691 while (PL_curstackinfo)
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 708 Safefree (PL_retstack);
656#endif 709#endif
657} 710}
658 711
712#define CORO_RSS \
713 rss += sizeof (SYM (curstackinfo)); \
714 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
715 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
716 rss += SYM (tmps_max) * sizeof (SV *); \
717 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
718 rss += SYM (scopestack_max) * sizeof (I32); \
719 rss += SYM (savestack_max) * sizeof (ANY);
720
659static size_t 721static size_t
660coro_rss (pTHX_ struct coro *coro) 722coro_rss (pTHX_ struct coro *coro)
661{ 723{
662 size_t rss = sizeof (*coro); 724 size_t rss = sizeof (*coro);
663 725
664 if (coro->mainstack) 726 if (coro->mainstack)
665 { 727 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 728 if (coro->flags & CF_RUNNING)
670 { 729 {
671 slot = &tmp_slot; 730 #define SYM(sym) PL_ ## sym
672 731 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 732 #undef SYM
676 } 733 }
677 else 734 else
678 slot = coro->slot;
679
680 if (slot)
681 { 735 {
682 rss += sizeof (slot->curstackinfo); 736 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 737 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 738 #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 } 739 }
694 } 740 }
695 741
696 return rss; 742 return rss;
697} 743}
… …
787 833
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 834 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 835}
790 836
791static void 837static void
838prepare_nop (pTHX_ struct coro_transfer_args *ta)
839{
840 /* kind of mega-hacky, but works */
841 ta->next = ta->prev = (struct coro *)ta;
842}
843
844static int
845slf_check_nop (pTHX_ struct CoroSLF *frame)
846{
847 return 0;
848}
849
850static int
851slf_check_repeat (pTHX_ struct CoroSLF *frame)
852{
853 return 1;
854}
855
856static UNOP coro_setup_op;
857
858static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 859coro_setup (pTHX_ struct coro *coro)
793{ 860{
794 /* 861 /*
795 * emulate part of the perl startup here. 862 * emulate part of the perl startup here.
796 */ 863 */
… …
820 PL_rs = newSVsv (GvSV (irsgv)); 887 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 888 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 889
823 { 890 {
824 dSP; 891 dSP;
825 LOGOP myop; 892 UNOP myop;
826 893
827 Zero (&myop, 1, LOGOP); 894 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 895 myop.op_next = Nullop;
896 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 897 myop.op_flags = OPf_WANT_VOID;
830 898
831 PUSHMARK (SP); 899 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 900 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 901 PUTBACK;
834 PL_op = (OP *)&myop; 902 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 903 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 904 }
838 905
839 /* this newly created coroutine might be run on an existing cctx which most 906 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 907 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 908 */
844 ENTER; 909 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 910 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 911
912 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
913 coro_setup_op.op_next = PL_op;
914 coro_setup_op.op_type = OP_ENTERSUB;
915 coro_setup_op.op_ppaddr = pp_slf;
916 /* no flags etc. required, as an init function won't be called */
917
918 PL_op = (OP *)&coro_setup_op;
919
920 /* copy throw, in case it was set before coro_setup */
921 CORO_THROW = coro->except;
922}
923
847static void 924static void
848coro_destroy (pTHX_ struct coro *coro) 925coro_destruct (pTHX_ struct coro *coro)
849{ 926{
850 if (!IN_DESTRUCT) 927 if (!IN_DESTRUCT)
851 { 928 {
852 /* restore all saved variables and stuff */ 929 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 930 LEAVE_SCOPE (0);
… …
873 950
874 SvREFCNT_dec (PL_diehook); 951 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 952 SvREFCNT_dec (PL_warnhook);
876 953
877 SvREFCNT_dec (coro->saved_deffh); 954 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 955 SvREFCNT_dec (coro->rouse_cb);
956 SvREFCNT_dec (coro->invoke_cb);
957 SvREFCNT_dec (coro->invoke_av);
879 958
880 coro_destroy_stacks (aTHX); 959 coro_destruct_stacks (aTHX);
881} 960}
882 961
883static void 962INLINE void
884free_coro_mortal (pTHX) 963free_coro_mortal (pTHX)
885{ 964{
886 if (expect_true (coro_mortal)) 965 if (expect_true (coro_mortal))
887 { 966 {
888 SvREFCNT_dec (coro_mortal); 967 SvREFCNT_dec (coro_mortal);
… …
893static int 972static int
894runops_trace (pTHX) 973runops_trace (pTHX)
895{ 974{
896 COP *oldcop = 0; 975 COP *oldcop = 0;
897 int oldcxix = -2; 976 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 977
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 978 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 979 {
903 PERL_ASYNC_CHECK (); 980 PERL_ASYNC_CHECK ();
904 981
905 if (cctx->flags & CC_TRACE_ALL) 982 if (cctx_current->flags & CC_TRACE_ALL)
906 { 983 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 984 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 985 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 986 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 987 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 988 AV *av = newAV (); /* return values */
912 SV **cb; 989 SV **cb;
… …
949 1026
950 if (PL_curcop != &PL_compiling) 1027 if (PL_curcop != &PL_compiling)
951 { 1028 {
952 SV **cb; 1029 SV **cb;
953 1030
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1031 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1032 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1033 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1034
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1035 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1036 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1037 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1038 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1039 SV *fullname = sv_2mortal (newSV (0));
964 1040
965 if (isGV (gv)) 1041 if (isGV (gv))
… …
970 SAVETMPS; 1046 SAVETMPS;
971 EXTEND (SP, 3); 1047 EXTEND (SP, 3);
972 PUSHMARK (SP); 1048 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1049 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1050 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1051 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1052 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1053 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1054 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1055 SPAGAIN;
980 FREETMPS; 1056 FREETMPS;
… …
983 } 1059 }
984 1060
985 oldcxix = cxstack_ix; 1061 oldcxix = cxstack_ix;
986 } 1062 }
987 1063
988 if (cctx->flags & CC_TRACE_LINE) 1064 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1065 {
990 dSP; 1066 dSP;
991 1067
992 PL_runops = RUNOPS_DEFAULT; 1068 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1069 ENTER;
… …
1012 1088
1013 TAINT_NOT; 1089 TAINT_NOT;
1014 return 0; 1090 return 0;
1015} 1091}
1016 1092
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1093static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1094
1019/* during execution of a perl program */ 1095static void
1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1097{
1098 ta->prev = 0;
1099}
1100
1101static int
1102slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1103{
1104 *frame = cctx_ssl_frame;
1105
1106 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1107}
1108
1109/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1110static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1111cctx_prepare (pTHX)
1022{ 1112{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1113 PL_top_env = &PL_start_env;
1027 1114
1028 if (cctx->flags & CC_TRACE) 1115 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1116 PL_runops = runops_trace;
1030 1117
1031 Zero (&myop, 1, LOGOP); 1118 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1119 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1120 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1121 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1122
1035 PUSHMARK (SP); 1123 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1124 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1125
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1126 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1127 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1128}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1129
1042 SPAGAIN; 1130/* the tail of transfer: execute stuff we can only do after a transfer */
1131INLINE void
1132transfer_tail (pTHX)
1133{
1134 free_coro_mortal (aTHX);
1043} 1135}
1044 1136
1045/* 1137/*
1046 * this is a _very_ stripped down perl interpreter ;) 1138 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1139 */
1048static void 1140static void
1049cctx_run (void *arg) 1141cctx_run (void *arg)
1050{ 1142{
1143#ifdef USE_ITHREADS
1144# if CORO_PTHREAD
1145 PERL_SET_CONTEXT (coro_thx);
1146# endif
1147#endif
1148 {
1051 dTHX; 1149 dTHX;
1052 1150
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1151 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1152 /* 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; 1153 /* PL_nop = PL_nop->op_next */
1058 1154
1059 /* inject a fake subroutine call to cctx_init */ 1155 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1156 cctx_prepare (aTHX);
1061 1157
1158 /* cctx_run is the alternative tail of transfer() */
1159 transfer_tail (aTHX);
1160
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1161 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1162 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1163 perl_run (PL_curinterp);
1065
1066 /* 1164 /*
1165 * Unfortunately, there is no way to get at the return values of the
1166 * coro body here, as perl_run destroys these
1167 */
1168
1169 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1170 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1171 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1172 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1173 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1174 * coroutine as Coro has no such concept
1072 */ 1175 */
1073 PL_top_env = main_top_env; 1176 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1177 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1178 }
1075} 1179}
1076 1180
1077static coro_cctx * 1181static coro_cctx *
1078cctx_new () 1182cctx_new ()
1079{ 1183{
1080 coro_cctx *cctx; 1184 coro_cctx *cctx;
1185
1186 ++cctx_count;
1187 New (0, cctx, 1, coro_cctx);
1188
1189 cctx->gen = cctx_gen;
1190 cctx->flags = 0;
1191 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1192
1193 return cctx;
1194}
1195
1196/* create a new cctx only suitable as source */
1197static coro_cctx *
1198cctx_new_empty ()
1199{
1200 coro_cctx *cctx = cctx_new ();
1201
1202 cctx->sptr = 0;
1203 coro_create (&cctx->cctx, 0, 0, 0, 0);
1204
1205 return cctx;
1206}
1207
1208/* create a new cctx suitable as destination/running a perl interpreter */
1209static coro_cctx *
1210cctx_new_run ()
1211{
1212 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1213 void *stack_start;
1082 size_t stack_size; 1214 size_t stack_size;
1083 1215
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1216#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1217 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1218 /* 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); 1219 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1220
1093 if (cctx->sptr != (void *)-1) 1221 if (cctx->sptr != (void *)-1)
1094 { 1222 {
1095# if CORO_STACKGUARD 1223 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1224 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1225 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1226 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1227 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1228 cctx->flags |= CC_MAPPED;
1101 } 1229 }
1102 else 1230 else
1103#endif 1231#endif
1104 { 1232 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1233 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1234 New (0, cctx->sptr, cctx_stacksize, long);
1107 1235
1108 if (!cctx->sptr) 1236 if (!cctx->sptr)
1109 { 1237 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1238 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1239 _exit (EXIT_FAILURE);
1112 } 1240 }
1113 1241
1114 stack_start = cctx->sptr; 1242 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1243 stack_size = cctx->ssize;
1116 } 1244 }
1117 1245
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1246 #if CORO_USE_VALGRIND
1247 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1248 #endif
1249
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1250 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1251
1121 return cctx; 1252 return cctx;
1122} 1253}
1123 1254
… …
1125cctx_destroy (coro_cctx *cctx) 1256cctx_destroy (coro_cctx *cctx)
1126{ 1257{
1127 if (!cctx) 1258 if (!cctx)
1128 return; 1259 return;
1129 1260
1261 assert (cctx != cctx_current);//D temporary
1262
1130 --cctx_count; 1263 --cctx_count;
1264 coro_destroy (&cctx->cctx);
1131 1265
1266 /* coro_transfer creates new, empty cctx's */
1267 if (cctx->sptr)
1268 {
1132#if CORO_USE_VALGRIND 1269 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1270 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1134#endif 1271 #endif
1135 1272
1136#if HAVE_MMAP 1273#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED) 1274 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize); 1275 munmap (cctx->sptr, cctx->ssize);
1139 else 1276 else
1140#endif 1277#endif
1141 Safefree (cctx->sptr); 1278 Safefree (cctx->sptr);
1279 }
1142 1280
1143 Safefree (cctx); 1281 Safefree (cctx);
1144} 1282}
1145 1283
1146/* wether this cctx should be destructed */ 1284/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1285#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1286
1149static coro_cctx * 1287static coro_cctx *
1150cctx_get (pTHX) 1288cctx_get (pTHX)
1151{ 1289{
1152 while (expect_true (cctx_first)) 1290 while (expect_true (cctx_first))
… …
1159 return cctx; 1297 return cctx;
1160 1298
1161 cctx_destroy (cctx); 1299 cctx_destroy (cctx);
1162 } 1300 }
1163 1301
1164 return cctx_new (); 1302 return cctx_new_run ();
1165} 1303}
1166 1304
1167static void 1305static void
1168cctx_put (coro_cctx *cctx) 1306cctx_put (coro_cctx *cctx)
1169{ 1307{
1308 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1309
1170 /* free another cctx if overlimit */ 1310 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1311 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1312 {
1173 coro_cctx *first = cctx_first; 1313 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1314 cctx_first = first->next;
1175 --cctx_idle; 1315 --cctx_idle;
1176 1316
… …
1185/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1186 1326
1187static void 1327static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1190 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1191 { 1333 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 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"); 1335 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1194 1336
1195 if (expect_false (next->flags & CF_RUNNING)) 1337 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"); 1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1197 1339
1198 if (expect_false (next->flags & CF_DESTROYED)) 1340 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"); 1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1200 1342
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1343#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1344 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"); 1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1346#endif
1205 } 1347 }
1206} 1348}
1207 1349
1208/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1209static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1353{
1212 dSTACKLEVEL; 1354 dSTACKLEVEL;
1213 1355
1214 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1215 if (expect_false (!next)) 1357 if (expect_false (!prev))
1216 { 1358 {
1217 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1359 cctx_current->idle_sp = STACKLEVEL;
1218 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1360 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1219 } 1361 }
1220 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1221 { 1363 {
1222 static volatile int has_throw;
1223 coro_cctx *prev__cctx; 1364 coro_cctx *cctx_prev;
1224 1365
1225 if (expect_false (prev->flags & CF_NEW)) 1366 if (expect_false (prev->flags & CF_NEW))
1226 { 1367 {
1227 /* create a new empty context */ 1368 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx);
1229 prev->flags &= ~CF_NEW; 1369 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1370 prev->flags |= CF_RUNNING;
1231 } 1371 }
1232 1372
1233 prev->flags &= ~CF_RUNNING; 1373 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1374 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1375
1238 /* first get rid of the old state */ 1376 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1377 save_perl (aTHX_ prev);
1240 1378
1241 if (expect_false (next->flags & CF_NEW)) 1379 if (expect_false (next->flags & CF_NEW))
… …
1246 coro_setup (aTHX_ next); 1384 coro_setup (aTHX_ next);
1247 } 1385 }
1248 else 1386 else
1249 load_perl (aTHX_ next); 1387 load_perl (aTHX_ next);
1250 1388
1251 prev__cctx = prev->cctx; 1389 assert (!prev->cctx);//D temporary
1252 1390
1253 /* possibly "free" the cctx */ 1391 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1392 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1393 cctx_current->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1394 && !(cctx_current->flags & CC_TRACE)
1257 && !force_cctx 1395 && !force_cctx
1258 )) 1396 ))
1259 { 1397 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1398 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1399 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1262 1400
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 */ 1401 /* 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 */ 1402 /* without this the next cctx_get might destroy the running cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1403 if (expect_false (CCTX_EXPIRED (cctx_current)))
1268 if (!next->cctx) 1404 if (expect_true (!next->cctx))
1269 next->cctx = cctx_get (aTHX); 1405 next->cctx = cctx_get (aTHX);
1270 1406
1271 cctx_put (prev__cctx); 1407 cctx_put (cctx_current);
1272 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
1273 1411
1274 ++next->usecount; 1412 ++next->usecount;
1275 1413
1276 if (expect_true (!next->cctx)) 1414 cctx_prev = cctx_current;
1277 next->cctx = cctx_get (aTHX); 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1278 1416
1279 has_throw = !!next->throw; 1417 next->cctx = 0;
1280 1418
1281 if (expect_false (prev__cctx != next->cctx)) 1419 if (expect_false (cctx_prev != cctx_current))
1282 { 1420 {
1283 prev__cctx->top_env = PL_top_env; 1421 cctx_prev->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1422 PL_top_env = cctx_current->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1286 } 1424 }
1287 1425
1288 free_coro_mortal (aTHX); 1426 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 } 1427 }
1304} 1428}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1429
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1430#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1431#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1432
1314/** high level stuff ********************************************************/ 1433/** high level stuff ********************************************************/
… …
1316static int 1435static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1436coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1437{
1319 if (coro->flags & CF_DESTROYED) 1438 if (coro->flags & CF_DESTROYED)
1320 return 0; 1439 return 0;
1440
1441 if (coro->on_destroy)
1442 coro->on_destroy (aTHX_ coro);
1321 1443
1322 coro->flags |= CF_DESTROYED; 1444 coro->flags |= CF_DESTROYED;
1323 1445
1324 if (coro->flags & CF_READY) 1446 if (coro->flags & CF_READY)
1325 { 1447 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1448 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1449 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1450 --coro_nready;
1330 UNLOCK;
1331 } 1451 }
1332 else 1452 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1453 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334 1454
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1455 if (coro->mainstack && coro->mainstack != main_mainstack)
1336 { 1456 {
1337 struct coro temp; 1457 struct coro temp;
1338 1458
1339 if (coro->flags & CF_RUNNING) 1459 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341 1460
1342 save_perl (aTHX_ &temp); 1461 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro); 1462 load_perl (aTHX_ coro);
1344 1463
1345 coro_destroy (aTHX_ coro); 1464 coro_destruct (aTHX_ coro);
1346 1465
1347 load_perl (aTHX_ &temp); 1466 load_perl (aTHX_ &temp);
1348 1467
1349 coro->slot = 0; 1468 coro->slot = 0;
1350 } 1469 }
1351 1470
1352 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
1353 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1354 1475
1355 if (coro->next) coro->next->prev = coro->prev; 1476 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1477 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1478 if (coro == coro_first) coro_first = coro->next;
1358 1479
… …
1396# define MGf_DUP 0 1517# define MGf_DUP 0
1397#endif 1518#endif
1398}; 1519};
1399 1520
1400static void 1521static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1522prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1523{
1403 ta->prev = SvSTATE (prev_sv); 1524 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1525 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1526 TRANSFER_CHECK (*ta);
1406} 1527}
1407 1528
1408static void 1529static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1530api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1531{
1411 dTHX;
1412 struct transfer_args ta; 1532 struct coro_transfer_args ta;
1413 1533
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1535 TRANSFER (ta, 1);
1416} 1536}
1417 1537
1538/*****************************************************************************/
1539/* gensub: simple closure generation utility */
1540
1541#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1542
1543/* create a closure from XS, returns a code reference */
1544/* the arg can be accessed via GENSUB_ARG from the callback */
1545/* the callback must use dXSARGS/XSRETURN */
1546static SV *
1547gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1548{
1549 CV *cv = (CV *)newSV (0);
1550
1551 sv_upgrade ((SV *)cv, SVt_PVCV);
1552
1553 CvANON_on (cv);
1554 CvISXSUB_on (cv);
1555 CvXSUB (cv) = xsub;
1556 GENSUB_ARG = arg;
1557
1558 return newRV_noinc ((SV *)cv);
1559}
1560
1418/** Coro ********************************************************************/ 1561/** Coro ********************************************************************/
1419 1562
1420static void 1563INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1564coro_enq (pTHX_ struct coro *coro)
1422{ 1565{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1566 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1424} 1567}
1425 1568
1426static SV * 1569INLINE SV *
1427coro_deq (pTHX) 1570coro_deq (pTHX)
1428{ 1571{
1429 int prio; 1572 int prio;
1430 1573
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1574 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1434 1577
1435 return 0; 1578 return 0;
1436} 1579}
1437 1580
1438static int 1581static int
1439api_ready (SV *coro_sv) 1582api_ready (pTHX_ SV *coro_sv)
1440{ 1583{
1441 dTHX;
1442 struct coro *coro; 1584 struct coro *coro;
1443 SV *sv_hook; 1585 SV *sv_hook;
1444 void (*xs_hook)(void); 1586 void (*xs_hook)(void);
1445 1587
1446 if (SvROK (coro_sv))
1447 coro_sv = SvRV (coro_sv);
1448
1449 coro = SvSTATE (coro_sv); 1588 coro = SvSTATE (coro_sv);
1450 1589
1451 if (coro->flags & CF_READY) 1590 if (coro->flags & CF_READY)
1452 return 0; 1591 return 0;
1453 1592
1454 coro->flags |= CF_READY; 1593 coro->flags |= CF_READY;
1455 1594
1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1595 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1596 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460 1597
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1598 coro_enq (aTHX_ coro);
1462 ++coro_nready; 1599 ++coro_nready;
1463 1600
1464 UNLOCK;
1465
1466 if (sv_hook) 1601 if (sv_hook)
1467 { 1602 {
1468 dSP; 1603 dSP;
1469 1604
1470 ENTER; 1605 ENTER;
1471 SAVETMPS; 1606 SAVETMPS;
1472 1607
1473 PUSHMARK (SP); 1608 PUSHMARK (SP);
1474 PUTBACK; 1609 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD); 1610 call_sv (sv_hook, G_VOID | G_DISCARD);
1476 SPAGAIN;
1477 1611
1478 FREETMPS; 1612 FREETMPS;
1479 LEAVE; 1613 LEAVE;
1480 } 1614 }
1481 1615
… …
1484 1618
1485 return 1; 1619 return 1;
1486} 1620}
1487 1621
1488static int 1622static int
1489api_is_ready (SV *coro_sv) 1623api_is_ready (pTHX_ SV *coro_sv)
1490{ 1624{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1625 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1626}
1494 1627
1495static void 1628/* expects to own a reference to next->hv */
1629INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1630prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1497{ 1631{
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); 1632 SV *prev_sv = SvRV (coro_current);
1633
1542 ta->prev = SvSTATE (prev_sv); 1634 ta->prev = SvSTATE_hv (prev_sv);
1635 ta->next = next;
1636
1543 TRANSFER_CHECK (*ta); 1637 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1638
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1639 SvRV_set (coro_current, (SV *)next->hv);
1547 1640
1548 LOCK;
1549 free_coro_mortal (aTHX); 1641 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1642 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1643}
1553 1644
1554static void 1645static void
1646prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1647{
1648 for (;;)
1649 {
1650 SV *next_sv = coro_deq (aTHX);
1651
1652 if (expect_true (next_sv))
1653 {
1654 struct coro *next = SvSTATE_hv (next_sv);
1655
1656 /* cannot transfer to destroyed coros, skip and look for next */
1657 if (expect_false (next->flags & CF_DESTROYED))
1658 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1659 else
1660 {
1661 next->flags &= ~CF_READY;
1662 --coro_nready;
1663
1664 prepare_schedule_to (aTHX_ ta, next);
1665 break;
1666 }
1667 }
1668 else
1669 {
1670 /* nothing to schedule: call the idle handler */
1671 if (SvROK (sv_idle)
1672 && SvOBJECT (SvRV (sv_idle)))
1673 {
1674 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1675 api_ready (SvRV (sv_idle));
1676 --coro_nready;
1677 }
1678 else
1679 {
1680 dSP;
1681
1682 ENTER;
1683 SAVETMPS;
1684
1685 PUSHMARK (SP);
1686 PUTBACK;
1687 call_sv (sv_idle, G_VOID | G_DISCARD);
1688
1689 FREETMPS;
1690 LEAVE;
1691 }
1692 }
1693 }
1694}
1695
1696INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1697prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1698{
1557 api_ready (coro_current); 1699 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1700 prepare_schedule (aTHX_ ta);
1559} 1701}
1560 1702
1703INLINE void
1704prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1705{
1706 SV *prev = SvRV (coro_current);
1707
1708 if (coro_nready)
1709 {
1710 prepare_schedule (aTHX_ ta);
1711 api_ready (aTHX_ prev);
1712 }
1713 else
1714 prepare_nop (aTHX_ ta);
1715}
1716
1717static void
1718api_schedule (pTHX)
1719{
1720 struct coro_transfer_args ta;
1721
1722 prepare_schedule (aTHX_ &ta);
1723 TRANSFER (ta, 1);
1724}
1725
1726static void
1727api_schedule_to (pTHX_ SV *coro_sv)
1728{
1729 struct coro_transfer_args ta;
1730 struct coro *next = SvSTATE (coro_sv);
1731
1732 SvREFCNT_inc_NN (coro_sv);
1733 prepare_schedule_to (aTHX_ &ta, next);
1734}
1735
1561static int 1736static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1737api_cede (pTHX)
1563{ 1738{
1564 if (coro_nready) 1739 struct coro_transfer_args ta;
1565 { 1740
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1741 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1742
1743 if (expect_true (ta.prev != ta.next))
1744 {
1745 TRANSFER (ta, 1);
1569 return 1; 1746 return 1;
1570 } 1747 }
1571 else 1748 else
1572 return 0; 1749 return 0;
1573} 1750}
1574 1751
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 1752static int
1586api_cede (void) 1753api_cede_notself (pTHX)
1587{ 1754{
1588 dTHX; 1755 if (coro_nready)
1756 {
1589 struct transfer_args ta; 1757 struct coro_transfer_args ta;
1590 1758
1591 prepare_cede (aTHX_ &ta); 1759 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1760 TRANSFER (ta, 1);
1596 return 1; 1761 return 1;
1597 } 1762 }
1598 else 1763 else
1599 return 0; 1764 return 0;
1600} 1765}
1601 1766
1602static int 1767static 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) 1768api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1769{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1770 struct coro *coro = SvSTATE (coro_sv);
1622 1771
1772 if (coro->flags & CF_RUNNING)
1773 croak ("cannot enable tracing on a running coroutine, caught");
1774
1623 if (flags & CC_TRACE) 1775 if (flags & CC_TRACE)
1624 { 1776 {
1625 if (!coro->cctx) 1777 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1778 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1779 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1780 croak ("cannot enable tracing on coroutine with custom stack, caught");
1629 1781
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1782 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1783 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1784 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1785 {
… …
1638 else 1790 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 1791 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 1792 }
1641} 1793}
1642 1794
1795static void
1796coro_call_on_destroy (pTHX_ struct coro *coro)
1797{
1798 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1799 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1800
1801 if (on_destroyp)
1802 {
1803 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1804
1805 while (AvFILLp (on_destroy) >= 0)
1806 {
1807 dSP; /* don't disturb outer sp */
1808 SV *cb = av_pop (on_destroy);
1809
1810 PUSHMARK (SP);
1811
1812 if (statusp)
1813 {
1814 int i;
1815 AV *status = (AV *)SvRV (*statusp);
1816 EXTEND (SP, AvFILLp (status) + 1);
1817
1818 for (i = 0; i <= AvFILLp (status); ++i)
1819 PUSHs (AvARRAY (status)[i]);
1820 }
1821
1822 PUTBACK;
1823 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1824 }
1825 }
1826}
1827
1828static void
1829slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1830{
1831 int i;
1832 HV *hv = (HV *)SvRV (coro_current);
1833 AV *av = newAV ();
1834
1835 av_extend (av, items - 1);
1836 for (i = 0; i < items; ++i)
1837 av_push (av, SvREFCNT_inc_NN (arg [i]));
1838
1839 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1840
1841 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1842 api_ready (aTHX_ sv_manager);
1843
1844 frame->prepare = prepare_schedule;
1845 frame->check = slf_check_repeat;
1846}
1847
1848/*****************************************************************************/
1849/* async pool handler */
1850
1643static int 1851static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1852slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1645{ 1853{
1646 AV *padlist; 1854 HV *hv = (HV *)SvRV (coro_current);
1647 AV *av = (AV *)mg->mg_obj; 1855 struct coro *coro = (struct coro *)frame->data;
1648 1856
1649 abort (); 1857 if (!coro->invoke_cb)
1858 return 1; /* loop till we have invoke */
1859 else
1860 {
1861 hv_store (hv, "desc", sizeof ("desc") - 1,
1862 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1863
1864 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1865
1866 {
1867 dSP;
1868 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1869 PUTBACK;
1870 }
1871
1872 SvREFCNT_dec (GvAV (PL_defgv));
1873 GvAV (PL_defgv) = coro->invoke_av;
1874 coro->invoke_av = 0;
1875
1876 return 0;
1877 }
1878}
1879
1880static void
1881slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1882{
1883 HV *hv = (HV *)SvRV (coro_current);
1884 struct coro *coro = SvSTATE_hv ((SV *)hv);
1885
1886 if (expect_true (coro->saved_deffh))
1887 {
1888 /* subsequent iteration */
1889 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1890 coro->saved_deffh = 0;
1891
1892 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1893 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1894 {
1895 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1896 coro->invoke_av = newAV ();
1897
1898 frame->prepare = prepare_nop;
1899 }
1900 else
1901 {
1902 av_clear (GvAV (PL_defgv));
1903 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1904
1905 coro->prio = 0;
1906
1907 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1908 api_trace (aTHX_ coro_current, 0);
1909
1910 frame->prepare = prepare_schedule;
1911 av_push (av_async_pool, SvREFCNT_inc (hv));
1912 }
1913 }
1914 else
1915 {
1916 /* first iteration, simply fall through */
1917 frame->prepare = prepare_nop;
1918 }
1919
1920 frame->check = slf_check_pool_handler;
1921 frame->data = (void *)coro;
1922}
1923
1924/*****************************************************************************/
1925/* rouse callback */
1926
1927#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1928
1929static void
1930coro_rouse_callback (pTHX_ CV *cv)
1931{
1932 dXSARGS;
1933 SV *data = (SV *)GENSUB_ARG;
1934
1935 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1936 {
1937 /* first call, set args */
1938 AV *av = newAV ();
1939 SV *coro = SvRV (data);
1940
1941 SvRV_set (data, (SV *)av);
1942 api_ready (aTHX_ coro);
1943 SvREFCNT_dec (coro);
1944
1945 /* better take a full copy of the arguments */
1946 while (items--)
1947 av_store (av, items, newSVsv (ST (items)));
1948 }
1949
1950 XSRETURN_EMPTY;
1951}
1952
1953static int
1954slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1955{
1956 SV *data = (SV *)frame->data;
1957
1958 if (CORO_THROW)
1959 return 0;
1960
1961 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1962 return 1;
1963
1964 /* now push all results on the stack */
1965 {
1966 dSP;
1967 AV *av = (AV *)SvRV (data);
1968 int i;
1969
1970 EXTEND (SP, AvFILLp (av) + 1);
1971 for (i = 0; i <= AvFILLp (av); ++i)
1972 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1973
1974 /* we have stolen the elements, so ste length to zero and free */
1975 AvFILLp (av) = -1;
1976 av_undef (av);
1977
1978 PUTBACK;
1979 }
1650 1980
1651 return 0; 1981 return 0;
1652} 1982}
1653 1983
1654static MGVTBL coro_gensub_vtbl = { 1984static void
1655 0, 0, 0, 0, 1985slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 1986{
1657}; 1987 SV *cb;
1988
1989 if (items)
1990 cb = arg [0];
1991 else
1992 {
1993 struct coro *coro = SvSTATE_current;
1994
1995 if (!coro->rouse_cb)
1996 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1997
1998 cb = sv_2mortal (coro->rouse_cb);
1999 coro->rouse_cb = 0;
2000 }
2001
2002 if (!SvROK (cb)
2003 || SvTYPE (SvRV (cb)) != SVt_PVCV
2004 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2005 croak ("Coro::rouse_wait called with illegal callback argument,");
2006
2007 {
2008 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2009 SV *data = (SV *)GENSUB_ARG;
2010
2011 frame->data = (void *)data;
2012 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2013 frame->check = slf_check_rouse_wait;
2014 }
2015}
2016
2017static SV *
2018coro_new_rouse_cb (pTHX)
2019{
2020 HV *hv = (HV *)SvRV (coro_current);
2021 struct coro *coro = SvSTATE_hv (hv);
2022 SV *data = newRV_inc ((SV *)hv);
2023 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2024
2025 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2026 SvREFCNT_dec (data); /* magicext increases the refcount */
2027
2028 SvREFCNT_dec (coro->rouse_cb);
2029 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2030
2031 return cb;
2032}
2033
2034/*****************************************************************************/
2035/* schedule-like-function opcode (SLF) */
2036
2037static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2038static const CV *slf_cv;
2039static SV **slf_argv;
2040static int slf_argc, slf_arga; /* count, allocated */
2041static I32 slf_ax; /* top of stack, for restore */
2042
2043/* this restores the stack in the case we patched the entersub, to */
2044/* recreate the stack frame as perl will on following calls */
2045/* since entersub cleared the stack */
2046static OP *
2047pp_restore (pTHX)
2048{
2049 int i;
2050 SV **SP = PL_stack_base + slf_ax;
2051
2052 PUSHMARK (SP);
2053
2054 EXTEND (SP, slf_argc + 1);
2055
2056 for (i = 0; i < slf_argc; ++i)
2057 PUSHs (sv_2mortal (slf_argv [i]));
2058
2059 PUSHs ((SV *)CvGV (slf_cv));
2060
2061 RETURNOP (slf_restore.op_first);
2062}
2063
2064static void
2065slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2066{
2067 SV **arg = (SV **)slf_frame.data;
2068
2069 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2070}
2071
2072static void
2073slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 if (items != 2)
2076 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2077
2078 frame->prepare = slf_prepare_transfer;
2079 frame->check = slf_check_nop;
2080 frame->data = (void *)arg; /* let's hope it will stay valid */
2081}
2082
2083static void
2084slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 frame->prepare = prepare_schedule;
2087 frame->check = slf_check_nop;
2088}
2089
2090static void
2091slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2092{
2093 struct coro *next = (struct coro *)slf_frame.data;
2094
2095 SvREFCNT_inc_NN (next->hv);
2096 prepare_schedule_to (aTHX_ ta, next);
2097}
2098
2099static void
2100slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 if (!items)
2103 croak ("Coro::schedule_to expects a coroutine argument, caught");
2104
2105 frame->data = (void *)SvSTATE (arg [0]);
2106 frame->prepare = slf_prepare_schedule_to;
2107 frame->check = slf_check_nop;
2108}
2109
2110static void
2111slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 api_ready (aTHX_ SvRV (coro_current));
2114
2115 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2116}
2117
2118static void
2119slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2120{
2121 frame->prepare = prepare_cede;
2122 frame->check = slf_check_nop;
2123}
2124
2125static void
2126slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2127{
2128 frame->prepare = prepare_cede_notself;
2129 frame->check = slf_check_nop;
2130}
2131
2132/*
2133 * these not obviously related functions are all rolled into one
2134 * function to increase chances that they all will call transfer with the same
2135 * stack offset
2136 * SLF stands for "schedule-like-function".
2137 */
2138static OP *
2139pp_slf (pTHX)
2140{
2141 I32 checkmark; /* mark SP to see how many elements check has pushed */
2142
2143 /* set up the slf frame, unless it has already been set-up */
2144 /* the latter happens when a new coro has been started */
2145 /* or when a new cctx was attached to an existing coroutine */
2146 if (expect_true (!slf_frame.prepare))
2147 {
2148 /* first iteration */
2149 dSP;
2150 SV **arg = PL_stack_base + TOPMARK + 1;
2151 int items = SP - arg; /* args without function object */
2152 SV *gv = *sp;
2153
2154 /* do a quick consistency check on the "function" object, and if it isn't */
2155 /* for us, divert to the real entersub */
2156 if (SvTYPE (gv) != SVt_PVGV
2157 || !GvCV (gv)
2158 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2159 return PL_ppaddr[OP_ENTERSUB](aTHX);
2160
2161 if (!(PL_op->op_flags & OPf_STACKED))
2162 {
2163 /* ampersand-form of call, use @_ instead of stack */
2164 AV *av = GvAV (PL_defgv);
2165 arg = AvARRAY (av);
2166 items = AvFILLp (av) + 1;
2167 }
2168
2169 /* now call the init function, which needs to set up slf_frame */
2170 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2171 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2172
2173 /* pop args */
2174 SP = PL_stack_base + POPMARK;
2175
2176 PUTBACK;
2177 }
2178
2179 /* now that we have a slf_frame, interpret it! */
2180 /* we use a callback system not to make the code needlessly */
2181 /* complicated, but so we can run multiple perl coros from one cctx */
2182
2183 do
2184 {
2185 struct coro_transfer_args ta;
2186
2187 slf_frame.prepare (aTHX_ &ta);
2188 TRANSFER (ta, 0);
2189
2190 checkmark = PL_stack_sp - PL_stack_base;
2191 }
2192 while (slf_frame.check (aTHX_ &slf_frame));
2193
2194 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2195
2196 /* exception handling */
2197 if (expect_false (CORO_THROW))
2198 {
2199 SV *exception = sv_2mortal (CORO_THROW);
2200
2201 CORO_THROW = 0;
2202 sv_setsv (ERRSV, exception);
2203 croak (0);
2204 }
2205
2206 /* return value handling - mostly like entersub */
2207 /* make sure we put something on the stack in scalar context */
2208 if (GIMME_V == G_SCALAR)
2209 {
2210 dSP;
2211 SV **bot = PL_stack_base + checkmark;
2212
2213 if (sp == bot) /* too few, push undef */
2214 bot [1] = &PL_sv_undef;
2215 else if (sp != bot + 1) /* too many, take last one */
2216 bot [1] = *sp;
2217
2218 SP = bot + 1;
2219
2220 PUTBACK;
2221 }
2222
2223 return NORMAL;
2224}
2225
2226static void
2227api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2228{
2229 int i;
2230 SV **arg = PL_stack_base + ax;
2231 int items = PL_stack_sp - arg + 1;
2232
2233 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2234
2235 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2236 && PL_op->op_ppaddr != pp_slf)
2237 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2238
2239 CvFLAGS (cv) |= CVf_SLF;
2240 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2241 slf_cv = cv;
2242
2243 /* we patch the op, and then re-run the whole call */
2244 /* we have to put the same argument on the stack for this to work */
2245 /* and this will be done by pp_restore */
2246 slf_restore.op_next = (OP *)&slf_restore;
2247 slf_restore.op_type = OP_CUSTOM;
2248 slf_restore.op_ppaddr = pp_restore;
2249 slf_restore.op_first = PL_op;
2250
2251 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2252
2253 if (PL_op->op_flags & OPf_STACKED)
2254 {
2255 if (items > slf_arga)
2256 {
2257 slf_arga = items;
2258 free (slf_argv);
2259 slf_argv = malloc (slf_arga * sizeof (SV *));
2260 }
2261
2262 slf_argc = items;
2263
2264 for (i = 0; i < items; ++i)
2265 slf_argv [i] = SvREFCNT_inc (arg [i]);
2266 }
2267 else
2268 slf_argc = 0;
2269
2270 PL_op->op_ppaddr = pp_slf;
2271 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2272
2273 PL_op = (OP *)&slf_restore;
2274}
1658 2275
1659/*****************************************************************************/ 2276/*****************************************************************************/
1660/* PerlIO::cede */ 2277/* PerlIO::cede */
1661 2278
1662typedef struct 2279typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2307 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2308 double now = nvtime ();
1692 2309
1693 if (now >= self->next) 2310 if (now >= self->next)
1694 { 2311 {
1695 api_cede (); 2312 api_cede (aTHX);
1696 self->next = now + self->every; 2313 self->next = now + self->every;
1697 } 2314 }
1698 2315
1699 return PerlIOBuf_flush (aTHX_ f); 2316 return PerlIOBuf_flush (aTHX_ f);
1700} 2317}
… …
1729 PerlIOBuf_get_ptr, 2346 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2347 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2348 PerlIOBuf_set_ptrcnt,
1732}; 2349};
1733 2350
2351/*****************************************************************************/
2352/* Coro::Semaphore & Coro::Signal */
2353
2354static SV *
2355coro_waitarray_new (pTHX_ int count)
2356{
2357 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2358 AV *av = newAV ();
2359 SV **ary;
2360
2361 /* unfortunately, building manually saves memory */
2362 Newx (ary, 2, SV *);
2363 AvALLOC (av) = ary;
2364 /*AvARRAY (av) = ary;*/
2365 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2366 AvMAX (av) = 1;
2367 AvFILLp (av) = 0;
2368 ary [0] = newSViv (count);
2369
2370 return newRV_noinc ((SV *)av);
2371}
2372
2373/* semaphore */
2374
2375static void
2376coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2377{
2378 SV *count_sv = AvARRAY (av)[0];
2379 IV count = SvIVX (count_sv);
2380
2381 count += adjust;
2382 SvIVX (count_sv) = count;
2383
2384 /* now wake up as many waiters as are expected to lock */
2385 while (count > 0 && AvFILLp (av) > 0)
2386 {
2387 SV *cb;
2388
2389 /* swap first two elements so we can shift a waiter */
2390 AvARRAY (av)[0] = AvARRAY (av)[1];
2391 AvARRAY (av)[1] = count_sv;
2392 cb = av_shift (av);
2393
2394 if (SvOBJECT (cb))
2395 {
2396 api_ready (aTHX_ cb);
2397 --count;
2398 }
2399 else if (SvTYPE (cb) == SVt_PVCV)
2400 {
2401 dSP;
2402 PUSHMARK (SP);
2403 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2404 PUTBACK;
2405 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2406 }
2407
2408 SvREFCNT_dec (cb);
2409 }
2410}
2411
2412static void
2413coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2414{
2415 /* call $sem->adjust (0) to possibly wake up some other waiters */
2416 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2417}
2418
2419static int
2420slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2421{
2422 AV *av = (AV *)frame->data;
2423 SV *count_sv = AvARRAY (av)[0];
2424
2425 /* if we are about to throw, don't actually acquire the lock, just throw */
2426 if (CORO_THROW)
2427 return 0;
2428 else if (SvIVX (count_sv) > 0)
2429 {
2430 SvSTATE_current->on_destroy = 0;
2431
2432 if (acquire)
2433 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2434 else
2435 coro_semaphore_adjust (aTHX_ av, 0);
2436
2437 return 0;
2438 }
2439 else
2440 {
2441 int i;
2442 /* if we were woken up but can't down, we look through the whole */
2443 /* waiters list and only add us if we aren't in there already */
2444 /* this avoids some degenerate memory usage cases */
2445
2446 for (i = 1; i <= AvFILLp (av); ++i)
2447 if (AvARRAY (av)[i] == SvRV (coro_current))
2448 return 1;
2449
2450 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2451 return 1;
2452 }
2453}
2454
2455static int
2456slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2457{
2458 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2459}
2460
2461static int
2462slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2463{
2464 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2465}
2466
2467static void
2468slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2469{
2470 AV *av = (AV *)SvRV (arg [0]);
2471
2472 if (SvIVX (AvARRAY (av)[0]) > 0)
2473 {
2474 frame->data = (void *)av;
2475 frame->prepare = prepare_nop;
2476 }
2477 else
2478 {
2479 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2480
2481 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2482 frame->prepare = prepare_schedule;
2483
2484 /* to avoid race conditions when a woken-up coro gets terminated */
2485 /* we arrange for a temporary on_destroy that calls adjust (0) */
2486 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2487 }
2488}
2489
2490static void
2491slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2492{
2493 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2494 frame->check = slf_check_semaphore_down;
2495}
2496
2497static void
2498slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2499{
2500 if (items >= 2)
2501 {
2502 /* callback form */
2503 AV *av = (AV *)SvRV (arg [0]);
2504 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2505
2506 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2507
2508 if (SvIVX (AvARRAY (av)[0]) > 0)
2509 coro_semaphore_adjust (aTHX_ av, 0);
2510
2511 frame->prepare = prepare_nop;
2512 frame->check = slf_check_nop;
2513 }
2514 else
2515 {
2516 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2517 frame->check = slf_check_semaphore_wait;
2518 }
2519}
2520
2521/* signal */
2522
2523static void
2524coro_signal_wake (pTHX_ AV *av, int count)
2525{
2526 SvIVX (AvARRAY (av)[0]) = 0;
2527
2528 /* now signal count waiters */
2529 while (count > 0 && AvFILLp (av) > 0)
2530 {
2531 SV *cb;
2532
2533 /* swap first two elements so we can shift a waiter */
2534 cb = AvARRAY (av)[0];
2535 AvARRAY (av)[0] = AvARRAY (av)[1];
2536 AvARRAY (av)[1] = cb;
2537
2538 cb = av_shift (av);
2539
2540 api_ready (aTHX_ cb);
2541 sv_setiv (cb, 0); /* signal waiter */
2542 SvREFCNT_dec (cb);
2543
2544 --count;
2545 }
2546}
2547
2548static int
2549slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2550{
2551 /* if we are about to throw, also stop waiting */
2552 return SvROK ((SV *)frame->data) && !CORO_THROW;
2553}
2554
2555static void
2556slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2557{
2558 AV *av = (AV *)SvRV (arg [0]);
2559
2560 if (SvIVX (AvARRAY (av)[0]))
2561 {
2562 SvIVX (AvARRAY (av)[0]) = 0;
2563 frame->prepare = prepare_nop;
2564 frame->check = slf_check_nop;
2565 }
2566 else
2567 {
2568 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2569
2570 av_push (av, waiter);
2571
2572 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2573 frame->prepare = prepare_schedule;
2574 frame->check = slf_check_signal_wait;
2575 }
2576}
2577
2578/*****************************************************************************/
2579/* Coro::AIO */
2580
2581#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2582
2583/* helper storage struct */
2584struct io_state
2585{
2586 int errorno;
2587 I32 laststype; /* U16 in 5.10.0 */
2588 int laststatval;
2589 Stat_t statcache;
2590};
2591
2592static void
2593coro_aio_callback (pTHX_ CV *cv)
2594{
2595 dXSARGS;
2596 AV *state = (AV *)GENSUB_ARG;
2597 SV *coro = av_pop (state);
2598 SV *data_sv = newSV (sizeof (struct io_state));
2599
2600 av_extend (state, items - 1);
2601
2602 sv_upgrade (data_sv, SVt_PV);
2603 SvCUR_set (data_sv, sizeof (struct io_state));
2604 SvPOK_only (data_sv);
2605
2606 {
2607 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2608
2609 data->errorno = errno;
2610 data->laststype = PL_laststype;
2611 data->laststatval = PL_laststatval;
2612 data->statcache = PL_statcache;
2613 }
2614
2615 /* now build the result vector out of all the parameters and the data_sv */
2616 {
2617 int i;
2618
2619 for (i = 0; i < items; ++i)
2620 av_push (state, SvREFCNT_inc_NN (ST (i)));
2621 }
2622
2623 av_push (state, data_sv);
2624
2625 api_ready (aTHX_ coro);
2626 SvREFCNT_dec (coro);
2627 SvREFCNT_dec ((AV *)state);
2628}
2629
2630static int
2631slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2632{
2633 AV *state = (AV *)frame->data;
2634
2635 /* if we are about to throw, return early */
2636 /* this does not cancel the aio request, but at least */
2637 /* it quickly returns */
2638 if (CORO_THROW)
2639 return 0;
2640
2641 /* one element that is an RV? repeat! */
2642 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2643 return 1;
2644
2645 /* restore status */
2646 {
2647 SV *data_sv = av_pop (state);
2648 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2649
2650 errno = data->errorno;
2651 PL_laststype = data->laststype;
2652 PL_laststatval = data->laststatval;
2653 PL_statcache = data->statcache;
2654
2655 SvREFCNT_dec (data_sv);
2656 }
2657
2658 /* push result values */
2659 {
2660 dSP;
2661 int i;
2662
2663 EXTEND (SP, AvFILLp (state) + 1);
2664 for (i = 0; i <= AvFILLp (state); ++i)
2665 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2666
2667 PUTBACK;
2668 }
2669
2670 return 0;
2671}
2672
2673static void
2674slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2675{
2676 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2677 SV *coro_hv = SvRV (coro_current);
2678 struct coro *coro = SvSTATE_hv (coro_hv);
2679
2680 /* put our coroutine id on the state arg */
2681 av_push (state, SvREFCNT_inc_NN (coro_hv));
2682
2683 /* first see whether we have a non-zero priority and set it as AIO prio */
2684 if (coro->prio)
2685 {
2686 dSP;
2687
2688 static SV *prio_cv;
2689 static SV *prio_sv;
2690
2691 if (expect_false (!prio_cv))
2692 {
2693 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2694 prio_sv = newSViv (0);
2695 }
2696
2697 PUSHMARK (SP);
2698 sv_setiv (prio_sv, coro->prio);
2699 XPUSHs (prio_sv);
2700
2701 PUTBACK;
2702 call_sv (prio_cv, G_VOID | G_DISCARD);
2703 }
2704
2705 /* now call the original request */
2706 {
2707 dSP;
2708 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2709 int i;
2710
2711 PUSHMARK (SP);
2712
2713 /* first push all args to the stack */
2714 EXTEND (SP, items + 1);
2715
2716 for (i = 0; i < items; ++i)
2717 PUSHs (arg [i]);
2718
2719 /* now push the callback closure */
2720 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2721
2722 /* now call the AIO function - we assume our request is uncancelable */
2723 PUTBACK;
2724 call_sv ((SV *)req, G_VOID | G_DISCARD);
2725 }
2726
2727 /* now that the requets is going, we loop toll we have a result */
2728 frame->data = (void *)state;
2729 frame->prepare = prepare_schedule;
2730 frame->check = slf_check_aio_req;
2731}
2732
2733static void
2734coro_aio_req_xs (pTHX_ CV *cv)
2735{
2736 dXSARGS;
2737
2738 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2739
2740 XSRETURN_EMPTY;
2741}
2742
2743/*****************************************************************************/
2744
2745#if CORO_CLONE
2746# include "clone.c"
2747#endif
1734 2748
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 2750
1737PROTOTYPES: DISABLE 2751PROTOTYPES: DISABLE
1738 2752
1739BOOT: 2753BOOT:
1740{ 2754{
1741#ifdef USE_ITHREADS 2755#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 2756# if CORO_PTHREAD
2757 coro_thx = PERL_GET_CONTEXT;
2758# endif
1743#endif 2759#endif
1744 BOOT_PAGESIZE; 2760 BOOT_PAGESIZE;
2761
2762 cctx_current = cctx_new_empty ();
1745 2763
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2764 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2765 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748 2766
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2767 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1765 main_top_env = PL_top_env; 2783 main_top_env = PL_top_env;
1766 2784
1767 while (main_top_env->je_prev) 2785 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 2786 main_top_env = main_top_env->je_prev;
1769 2787
2788 {
2789 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2790
2791 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2792 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2793
2794 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2795 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2796 }
2797
1770 coroapi.ver = CORO_API_VERSION; 2798 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION; 2799 coroapi.rev = CORO_API_REVISION;
2800
1772 coroapi.transfer = api_transfer; 2801 coroapi.transfer = api_transfer;
2802
2803 coroapi.sv_state = SvSTATE_;
2804 coroapi.execute_slf = api_execute_slf;
2805 coroapi.prepare_nop = prepare_nop;
2806 coroapi.prepare_schedule = prepare_schedule;
2807 coroapi.prepare_cede = prepare_cede;
2808 coroapi.prepare_cede_notself = prepare_cede_notself;
1773 2809
1774 { 2810 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2811 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776 2812
1777 if (!svp) croak ("Time::HiRes is required"); 2813 if (!svp) croak ("Time::HiRes is required");
… …
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2819 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1784} 2820}
1785 2821
1786SV * 2822SV *
1787new (char *klass, ...) 2823new (char *klass, ...)
2824 ALIAS:
2825 Coro::new = 1
1788 CODE: 2826 CODE:
1789{ 2827{
1790 struct coro *coro; 2828 struct coro *coro;
1791 MAGIC *mg; 2829 MAGIC *mg;
1792 HV *hv; 2830 HV *hv;
2831 CV *cb;
1793 int i; 2832 int i;
2833
2834 if (items > 1)
2835 {
2836 cb = coro_sv_2cv (aTHX_ ST (1));
2837
2838 if (!ix)
2839 {
2840 if (CvISXSUB (cb))
2841 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2842
2843 if (!CvROOT (cb))
2844 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2845 }
2846 }
1794 2847
1795 Newz (0, coro, 1, struct coro); 2848 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV (); 2849 coro->args = newAV ();
1797 coro->flags = CF_NEW; 2850 coro->flags = CF_NEW;
1798 2851
… …
1803 coro->hv = hv = newHV (); 2856 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2857 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP; 2858 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2859 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807 2860
2861 if (items > 1)
2862 {
1808 av_extend (coro->args, items - 1); 2863 av_extend (coro->args, items - 1 + ix - 1);
2864
2865 if (ix)
2866 {
2867 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2868 cb = cv_coro_run;
2869 }
2870
2871 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2872
1809 for (i = 1; i < items; i++) 2873 for (i = 2; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i))); 2874 av_push (coro->args, newSVsv (ST (i)));
2875 }
1811} 2876}
1812 OUTPUT: 2877 OUTPUT:
1813 RETVAL 2878 RETVAL
1814 2879
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 2880void
1819_set_stacklevel (...) 2881transfer (...)
1820 ALIAS: 2882 PROTOTYPE: $$
1821 Coro::State::transfer = 1 2883 CODE:
1822 Coro::schedule = 2 2884 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 2885
1867bool 2886bool
1868_destroy (SV *coro_sv) 2887_destroy (SV *coro_sv)
1869 CODE: 2888 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2889 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875_exit (int code) 2894_exit (int code)
1876 PROTOTYPE: $ 2895 PROTOTYPE: $
1877 CODE: 2896 CODE:
1878 _exit (code); 2897 _exit (code);
1879 2898
2899SV *
2900clone (Coro::State coro)
2901 CODE:
2902{
2903#if CORO_CLONE
2904 struct coro *ncoro = coro_clone (coro);
2905 MAGIC *mg;
2906 /* TODO: too much duplication */
2907 ncoro->hv = newHV ();
2908 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2909 mg->mg_flags |= MGf_DUP;
2910 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2911#else
2912 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2913#endif
2914}
2915 OUTPUT:
2916 RETVAL
2917
1880int 2918int
1881cctx_stacksize (int new_stacksize = 0) 2919cctx_stacksize (int new_stacksize = 0)
2920 PROTOTYPE: ;$
1882 CODE: 2921 CODE:
1883 RETVAL = coro_stacksize; 2922 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 2923 if (new_stacksize)
2924 {
1885 coro_stacksize = new_stacksize; 2925 cctx_stacksize = new_stacksize;
2926 ++cctx_gen;
2927 }
1886 OUTPUT: 2928 OUTPUT:
1887 RETVAL 2929 RETVAL
1888 2930
1889int 2931int
2932cctx_max_idle (int max_idle = 0)
2933 PROTOTYPE: ;$
2934 CODE:
2935 RETVAL = cctx_max_idle;
2936 if (max_idle > 1)
2937 cctx_max_idle = max_idle;
2938 OUTPUT:
2939 RETVAL
2940
2941int
1890cctx_count () 2942cctx_count ()
2943 PROTOTYPE:
1891 CODE: 2944 CODE:
1892 RETVAL = cctx_count; 2945 RETVAL = cctx_count;
1893 OUTPUT: 2946 OUTPUT:
1894 RETVAL 2947 RETVAL
1895 2948
1896int 2949int
1897cctx_idle () 2950cctx_idle ()
2951 PROTOTYPE:
1898 CODE: 2952 CODE:
1899 RETVAL = cctx_idle; 2953 RETVAL = cctx_idle;
1900 OUTPUT: 2954 OUTPUT:
1901 RETVAL 2955 RETVAL
1902 2956
1903void 2957void
1904list () 2958list ()
2959 PROTOTYPE:
1905 PPCODE: 2960 PPCODE:
1906{ 2961{
1907 struct coro *coro; 2962 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 2963 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 2964 if (coro->hv)
… …
1968 RETVAL = boolSV (coro->flags & ix); 3023 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 3024 OUTPUT:
1970 RETVAL 3025 RETVAL
1971 3026
1972void 3027void
3028throw (Coro::State self, SV *throw = &PL_sv_undef)
3029 PROTOTYPE: $;$
3030 CODE:
3031{
3032 struct coro *current = SvSTATE_current;
3033 SV **throwp = self == current ? &CORO_THROW : &self->except;
3034 SvREFCNT_dec (*throwp);
3035 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3036}
3037
3038void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3039api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3040 PROTOTYPE: $;$
3041 C_ARGS: aTHX_ coro, flags
1974 3042
1975SV * 3043SV *
1976has_cctx (Coro::State coro) 3044has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 3045 PROTOTYPE: $
1978 CODE: 3046 CODE:
1979 RETVAL = boolSV (!!coro->cctx); 3047 /* maybe manage the running flag differently */
3048 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1980 OUTPUT: 3049 OUTPUT:
1981 RETVAL 3050 RETVAL
1982 3051
1983int 3052int
1984is_traced (Coro::State coro) 3053is_traced (Coro::State coro)
… …
1986 CODE: 3055 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3056 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 3057 OUTPUT:
1989 RETVAL 3058 RETVAL
1990 3059
1991IV 3060UV
1992rss (Coro::State coro) 3061rss (Coro::State coro)
1993 PROTOTYPE: $ 3062 PROTOTYPE: $
1994 ALIAS: 3063 ALIAS:
1995 usecount = 1 3064 usecount = 1
1996 CODE: 3065 CODE:
… …
2002 OUTPUT: 3071 OUTPUT:
2003 RETVAL 3072 RETVAL
2004 3073
2005void 3074void
2006force_cctx () 3075force_cctx ()
3076 PROTOTYPE:
2007 CODE: 3077 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 3078 cctx_current->idle_sp = 0;
2010 3079
2011void 3080void
2012swap_defsv (Coro::State self) 3081swap_defsv (Coro::State self)
2013 PROTOTYPE: $ 3082 PROTOTYPE: $
2014 ALIAS: 3083 ALIAS:
2015 swap_defav = 1 3084 swap_defav = 1
2016 CODE: 3085 CODE:
2017 if (!self->slot) 3086 if (!self->slot)
2018 croak ("cannot swap state with coroutine that has no saved state"); 3087 croak ("cannot swap state with coroutine that has no saved state,");
2019 else 3088 else
2020 { 3089 {
2021 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2022 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2023 3092
2024 SV *tmp = *src; *src = *dst; *dst = tmp; 3093 SV *tmp = *src; *src = *dst; *dst = tmp;
2025 } 3094 }
2026 3095
3096
2027MODULE = Coro::State PACKAGE = Coro 3097MODULE = Coro::State PACKAGE = Coro
2028 3098
2029BOOT: 3099BOOT:
2030{ 3100{
2031 int i; 3101 int i;
2032 3102
2033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2034 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2035 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2036 3105 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3106 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2037 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3107 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2038 SvREADONLY_on (coro_current); 3108 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3109 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3110 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3111 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3112
3113 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3114 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3115 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3116 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2039 3117
2040 coro_stash = gv_stashpv ("Coro", TRUE); 3118 coro_stash = gv_stashpv ("Coro", TRUE);
2041 3119
2042 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3120 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2043 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3121 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2048 3126
2049 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3127 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2050 coro_ready[i] = newAV (); 3128 coro_ready[i] = newAV ();
2051 3129
2052 { 3130 {
2053 SV *sv = perl_get_sv ("Coro::API", TRUE); 3131 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2054 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2055 3132
2056 coroapi.schedule = api_schedule; 3133 coroapi.schedule = api_schedule;
3134 coroapi.schedule_to = api_schedule_to;
2057 coroapi.cede = api_cede; 3135 coroapi.cede = api_cede;
2058 coroapi.cede_notself = api_cede_notself; 3136 coroapi.cede_notself = api_cede_notself;
2059 coroapi.ready = api_ready; 3137 coroapi.ready = api_ready;
2060 coroapi.is_ready = api_is_ready; 3138 coroapi.is_ready = api_is_ready;
2061 coroapi.nready = &coro_nready; 3139 coroapi.nready = coro_nready;
2062 coroapi.current = coro_current; 3140 coroapi.current = coro_current;
2063 3141
2064 GCoroAPI = &coroapi; 3142 /*GCoroAPI = &coroapi;*/
2065 sv_setiv (sv, (IV)&coroapi); 3143 sv_setiv (sv, (IV)&coroapi);
2066 SvREADONLY_on (sv); 3144 SvREADONLY_on (sv);
2067 } 3145 }
2068} 3146}
3147
3148void
3149terminate (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3152
3153void
3154schedule (...)
3155 CODE:
3156 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3157
3158void
3159schedule_to (...)
3160 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3162
3163void
3164cede_to (...)
3165 CODE:
3166 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3167
3168void
3169cede (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_cede);
3172
3173void
3174cede_notself (...)
3175 CODE:
3176 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3177
3178void
3179_cancel (Coro::State self)
3180 CODE:
3181 coro_state_destroy (aTHX_ self);
3182 coro_call_on_destroy (aTHX_ self);
2069 3183
2070void 3184void
2071_set_current (SV *current) 3185_set_current (SV *current)
2072 PROTOTYPE: $ 3186 PROTOTYPE: $
2073 CODE: 3187 CODE:
… …
2076 3190
2077void 3191void
2078_set_readyhook (SV *hook) 3192_set_readyhook (SV *hook)
2079 PROTOTYPE: $ 3193 PROTOTYPE: $
2080 CODE: 3194 CODE:
2081 LOCK;
2082 SvREFCNT_dec (coro_readyhook); 3195 SvREFCNT_dec (coro_readyhook);
2083 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3196 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2084 UNLOCK;
2085 3197
2086int 3198int
2087prio (Coro::State coro, int newprio = 0) 3199prio (Coro::State coro, int newprio = 0)
3200 PROTOTYPE: $;$
2088 ALIAS: 3201 ALIAS:
2089 nice = 1 3202 nice = 1
2090 CODE: 3203 CODE:
2091{ 3204{
2092 RETVAL = coro->prio; 3205 RETVAL = coro->prio;
… …
2107 3220
2108SV * 3221SV *
2109ready (SV *self) 3222ready (SV *self)
2110 PROTOTYPE: $ 3223 PROTOTYPE: $
2111 CODE: 3224 CODE:
2112 RETVAL = boolSV (api_ready (self)); 3225 RETVAL = boolSV (api_ready (aTHX_ self));
2113 OUTPUT: 3226 OUTPUT:
2114 RETVAL 3227 RETVAL
2115 3228
2116int 3229int
2117nready (...) 3230nready (...)
… …
2120 RETVAL = coro_nready; 3233 RETVAL = coro_nready;
2121 OUTPUT: 3234 OUTPUT:
2122 RETVAL 3235 RETVAL
2123 3236
2124void 3237void
2125throw (Coro::State self, SV *throw = &PL_sv_undef) 3238_pool_handler (...)
2126 PROTOTYPE: $;$ 3239 CODE:
2127 CODE: 3240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2128 SvREFCNT_dec (self->throw);
2129 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2130 3241
2131# for async_pool speedup
2132void 3242void
2133_pool_1 (SV *cb) 3243async_pool (SV *cv, ...)
3244 PROTOTYPE: &@
3245 PPCODE:
3246{
3247 HV *hv = (HV *)av_pop (av_async_pool);
3248 AV *av = newAV ();
3249 SV *cb = ST (0);
3250 int i;
3251
3252 av_extend (av, items - 2);
3253 for (i = 1; i < items; ++i)
3254 av_push (av, SvREFCNT_inc_NN (ST (i)));
3255
3256 if ((SV *)hv == &PL_sv_undef)
3257 {
3258 PUSHMARK (SP);
3259 EXTEND (SP, 2);
3260 PUSHs (sv_Coro);
3261 PUSHs ((SV *)cv_pool_handler);
3262 PUTBACK;
3263 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3264 SPAGAIN;
3265
3266 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3267 }
3268
3269 {
3270 struct coro *coro = SvSTATE_hv (hv);
3271
3272 assert (!coro->invoke_cb);
3273 assert (!coro->invoke_av);
3274 coro->invoke_cb = SvREFCNT_inc (cb);
3275 coro->invoke_av = av;
3276 }
3277
3278 api_ready (aTHX_ (SV *)hv);
3279
3280 if (GIMME_V != G_VOID)
3281 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3282 else
3283 SvREFCNT_dec (hv);
3284}
3285
3286SV *
3287rouse_cb ()
3288 PROTOTYPE:
2134 CODE: 3289 CODE:
2135{ 3290 RETVAL = coro_new_rouse_cb (aTHX);
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142
2143 if (!invoke)
2144 {
2145 SV *old = PL_diehook;
2146 PL_diehook = 0;
2147 SvREFCNT_dec (old);
2148 croak ("\3async_pool terminate\2\n");
2149 }
2150
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 {
2164 av_fill (defav, len - 1);
2165 for (i = 0; i < len; ++i)
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2167 }
2168
2169 SvREFCNT_dec (invoke);
2170}
2171
2172void
2173_pool_2 (SV *cb)
2174 CODE:
2175{
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT: 3291 OUTPUT:
2248 RETVAL 3292 RETVAL
2249 3293
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 3294void
2256_get_state (SV *self) 3295rouse_wait (...)
3296 PROTOTYPE: ;$
2257 PPCODE: 3297 PPCODE:
2258{ 3298 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 3299
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271 3300
2272 av_extend (av, AvFILLp (defav) + 1 + 1); 3301MODULE = Coro::State PACKAGE = PerlIO::cede
2273 3302
2274 for (i = 0; i <= AvFILLp (defav); ++i) 3303BOOT:
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3304 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2276 3305
2277 av_push (av, data_sv);
2278 3306
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3307MODULE = Coro::State PACKAGE = Coro::Semaphore
2280 3308
2281 api_ready (self); 3309SV *
2282} 3310new (SV *klass, SV *count = 0)
3311 CODE:
3312 RETVAL = sv_bless (
3313 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3314 GvSTASH (CvGV (cv))
3315 );
3316 OUTPUT:
3317 RETVAL
3318
3319# helper for Coro::Channel
3320SV *
3321_alloc (int count)
3322 CODE:
3323 RETVAL = coro_waitarray_new (aTHX_ count);
3324 OUTPUT:
3325 RETVAL
3326
3327SV *
3328count (SV *self)
3329 CODE:
3330 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3331 OUTPUT:
3332 RETVAL
2283 3333
2284void 3334void
2285_set_state (SV *state) 3335up (SV *self, int adjust = 1)
2286 PROTOTYPE: $ 3336 ALIAS:
3337 adjust = 1
3338 CODE:
3339 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3340
3341void
3342down (...)
3343 CODE:
3344 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3345
3346void
3347wait (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3350
3351void
3352try (SV *self)
3353 PPCODE:
3354{
3355 AV *av = (AV *)SvRV (self);
3356 SV *count_sv = AvARRAY (av)[0];
3357 IV count = SvIVX (count_sv);
3358
3359 if (count > 0)
3360 {
3361 --count;
3362 SvIVX (count_sv) = count;
3363 XSRETURN_YES;
3364 }
3365 else
3366 XSRETURN_NO;
3367}
3368
3369void
3370waiters (SV *self)
3371 PPCODE:
3372{
3373 AV *av = (AV *)SvRV (self);
3374 int wcount = AvFILLp (av) + 1 - 1;
3375
3376 if (GIMME_V == G_SCALAR)
3377 XPUSHs (sv_2mortal (newSViv (wcount)));
3378 else
3379 {
3380 int i;
3381 EXTEND (SP, wcount);
3382 for (i = 1; i <= wcount; ++i)
3383 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3384 }
3385}
3386
3387MODULE = Coro::State PACKAGE = Coro::Signal
3388
3389SV *
3390new (SV *klass)
2287 PPCODE: 3391 CODE:
3392 RETVAL = sv_bless (
3393 coro_waitarray_new (aTHX_ 0),
3394 GvSTASH (CvGV (cv))
3395 );
3396 OUTPUT:
3397 RETVAL
3398
3399void
3400wait (...)
3401 CODE:
3402 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3403
3404void
3405broadcast (SV *self)
3406 CODE:
2288{ 3407{
2289 AV *av = (AV *)SvRV (state); 3408 AV *av = (AV *)SvRV (self);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3409 coro_signal_wake (aTHX_ av, AvFILLp (av));
2291 int i; 3410}
2292 3411
2293 errno = data->errorno; 3412void
2294 PL_laststype = data->laststype; 3413send (SV *self)
2295 PL_laststatval = data->laststatval; 3414 CODE:
2296 PL_statcache = data->statcache; 3415{
3416 AV *av = (AV *)SvRV (self);
2297 3417
2298 EXTEND (SP, AvFILLp (av)); 3418 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 3419 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3420 else
3421 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 3422}
3423
3424IV
3425awaited (SV *self)
3426 CODE:
3427 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3428 OUTPUT:
3429 RETVAL
2302 3430
2303 3431
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 3432MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 3433
2306BOOT: 3434BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3435 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 3436
2309SV * 3437void
2310_schedule (...) 3438_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 3439 CODE:
2313{ 3440{
2314 static int incede; 3441 static int incede;
2315 3442
2316 api_cede_notself (); 3443 api_cede_notself (aTHX);
2317 3444
2318 ++incede; 3445 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 3446 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 3447 ;
2321 3448
2322 sv_setsv (sv_activity, &PL_sv_undef); 3449 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 3450 if (coro_nready >= incede)
2324 { 3451 {
2325 PUSHMARK (SP); 3452 PUSHMARK (SP);
2326 PUTBACK; 3453 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3454 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 3455 }
2330 3456
2331 --incede; 3457 --incede;
2332} 3458}
2333 3459
2334 3460
2335MODULE = Coro::State PACKAGE = PerlIO::cede 3461MODULE = Coro::State PACKAGE = Coro::AIO
2336 3462
2337BOOT: 3463void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3464_register (char *target, char *proto, SV *req)
3465 CODE:
3466{
3467 CV *req_cv = coro_sv_2cv (aTHX_ req);
3468 /* newXSproto doesn't return the CV on 5.8 */
3469 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3470 sv_setpv ((SV *)slf_cv, proto);
3471 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3472}
3473

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