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Comparing Coro/Coro/State.xs (file contents):
Revision 1.247 by root, Wed Sep 24 21:31:29 2008 UTC vs.
Revision 1.314 by root, Thu Nov 20 03:24:39 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
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93 100#ifndef CvISXSUB_on
94/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
95#ifndef CxHASARGS 102#endif
96# define CxHASARGS(cx) (cx)->blk_sub.hasargs 103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
97#endif 105#endif
98 106
99/* 5.8.7 */ 107/* 5.8.7 */
100#ifndef SvRV_set 108#ifndef SvRV_set
101# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
… …
114# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
115#endif 123#endif
116 124
117/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
118 * portable way as possible. */ 126 * portable way as possible. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
119#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
120#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
121 134
122#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
123 136
124#if __GNUC__ >= 3 137#if __GNUC__ >= 3
125# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
126# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127# define expect(expr,value) __builtin_expect ((expr),(value)) 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
128#else 141#else
129# define attribute(x) 142# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr) 143# define expect(expr,value) (expr)
144# define INLINE static
132#endif 145#endif
133 146
134#define expect_false(expr) expect ((expr) != 0, 0) 147#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
136 149
137#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
138 151
139#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
140 154
141#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
142static perl_mutex coro_mutex; 156# if CORO_PTHREAD
143# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 157static void *coro_thx;
144# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
145#else
146# define LOCK (void)0
147# define UNLOCK (void)0
148#endif 158# endif
149 159#endif
150/* helper storage struct for Coro::AIO */
151struct io_state
152{
153 int errorno;
154 I32 laststype;
155 int laststatval;
156 Stat_t statcache;
157};
158 160
159static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
160 162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
166
167static U32 cctx_gen;
161static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
162static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
163static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
164static JMPENV *main_top_env; 171static JMPENV *main_top_env;
165static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
166static volatile SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
167 174
168static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
169static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
170static SV *rv_diehook; 177static SV *rv_diehook;
171static SV *rv_warnhook; 178static SV *rv_warnhook;
172static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
173 180
174/* async_pool helper stuff */ 181/* async_pool helper stuff */
175static SV *sv_pool_rss; 182static SV *sv_pool_rss;
176static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
177static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_new;
178 189
179/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
180static SV *sv_activity; 191static SV *sv_activity;
181 192
182static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
190 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
191 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
192}; 203};
193 204
194/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
195typedef struct coro_cctx { 206typedef struct coro_cctx
207{
196 struct coro_cctx *next; 208 struct coro_cctx *next;
197 209
198 /* the stack */ 210 /* the stack */
199 void *sptr; 211 void *sptr;
200 size_t ssize; 212 size_t ssize;
… …
203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 215 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 216 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
205 JMPENV *top_env; 217 JMPENV *top_env;
206 coro_context cctx; 218 coro_context cctx;
207 219
220 U32 gen;
208#if CORO_USE_VALGRIND 221#if CORO_USE_VALGRIND
209 int valgrind_id; 222 int valgrind_id;
210#endif 223#endif
211 unsigned char flags; 224 unsigned char flags;
212} coro_cctx; 225} coro_cctx;
… …
217 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
218 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
219}; 232};
220 233
221/* the structure where most of the perl state is stored, overlaid on the cxstack */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
222typedef struct { 235typedef struct
236{
223 SV *defsv; 237 SV *defsv;
224 AV *defav; 238 AV *defav;
225 SV *errsv; 239 SV *errsv;
226 SV *irsgv; 240 SV *irsgv;
227#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
231 245
232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
233 247
234/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
235struct coro { 249struct coro {
236 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 251 coro_cctx *cctx;
238 252
239 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
240 AV *mainstack; 255 AV *mainstack;
241 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
242 257
258 CV *startcv; /* the CV to execute */
243 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
244 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
245 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
246 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
247 264
248 /* statistics */ 265 /* statistics */
249 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
250 267
251 /* coro process data */ 268 /* coro process data */
252 int prio; 269 int prio;
253 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
254 272
255 /* async_pool */ 273 /* async_pool */
256 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
257 277
258 /* linked list */ 278 /* linked list */
259 struct coro *next, *prev; 279 struct coro *next, *prev;
260}; 280};
261 281
262typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
263typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
264 289
265/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
266 291
267#define PRIO_MAX 3 292#define PRIO_MAX 3
268#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
272#define PRIO_MIN -4 297#define PRIO_MIN -4
273 298
274/* for Coro.pm */ 299/* for Coro.pm */
275static SV *coro_current; 300static SV *coro_current;
276static SV *coro_readyhook; 301static SV *coro_readyhook;
277static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
278static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
279static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
280 306
281/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
282 308
283static SV * 309static SV *
284coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
306#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
307 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
308 get_hv (name, create); 334 get_hv (name, create);
309#endif 335#endif
310 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
311} 346}
312 347
313static AV * 348static AV *
314coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
315{ 350{
… …
324 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 359 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
325#endif 360#endif
326 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 361 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
327 --AvFILLp (padlist); 362 --AvFILLp (padlist);
328 363
329 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 364 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
330 av_store (newpadlist, 1, (SV *)newpad); 365 av_store (newpadlist, 1, (SV *)newpad);
331 366
332 return newpadlist; 367 return newpadlist;
333} 368}
334 369
… …
369 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
370 405
371 return 0; 406 return 0;
372} 407}
373 408
374#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
375#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
376 411
377static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
378 0, 0, 0, 0, 413 0, 0, 0, 0,
379 coro_cv_free 414 coro_cv_free
380}; 415};
381 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
382#define CORO_MAGIC(sv,type) \ 422#define CORO_MAGIC(sv, type) \
383 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
384 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
385 ? SvMAGIC (sv) \
386 : mg_find (sv, type) \
387 : 0 425 : 0)
388 426
389#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
391 429
392static struct coro * 430INLINE struct coro *
393SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
394{ 432{
395 HV *stash; 433 HV *stash;
396 MAGIC *mg; 434 MAGIC *mg;
397 435
… …
412 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
413 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
414} 452}
415 453
416#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
417 459
418/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
419static void 461static void
420get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
421{ 463{
… …
427 else 469 else
428 { 470 {
429#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
430 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
431 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
432 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
433 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
434 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
435 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
436#else 478#else
437 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
488 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
489 } 531 }
490 532
491 PUTBACK; 533 PUTBACK;
492 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
493} 538}
494 539
495static void 540static void
496save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
497{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
498 { 546 {
499 dSP; 547 dSP;
500 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
501 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
502 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
569 #undef VAR 617 #undef VAR
570 } 618 }
571} 619}
572 620
573/* 621/*
574 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
575 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
576 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
577 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
578 */ 626 */
579#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
580# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
581#else 629#else
582static void 630static void
583coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
584{ 632{
585 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
622 670
623/* 671/*
624 * destroy the stacks, the callchain etc... 672 * destroy the stacks, the callchain etc...
625 */ 673 */
626static void 674static void
627coro_destroy_stacks (pTHX) 675coro_destruct_stacks (pTHX)
628{ 676{
629 while (PL_curstackinfo->si_next) 677 while (PL_curstackinfo->si_next)
630 PL_curstackinfo = PL_curstackinfo->si_next; 678 PL_curstackinfo = PL_curstackinfo->si_next;
631 679
632 while (PL_curstackinfo) 680 while (PL_curstackinfo)
… …
648#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
649 Safefree (PL_retstack); 697 Safefree (PL_retstack);
650#endif 698#endif
651} 699}
652 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
653static size_t 710static size_t
654coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
655{ 712{
656 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
657 714
658 if (coro->mainstack) 715 if (coro->mainstack)
659 { 716 {
660 perl_slots tmp_slot;
661 perl_slots *slot;
662
663 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
664 { 718 {
665 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
666 720 CORO_RSS;
667 #define VAR(name,type) slot->name = PL_ ## name;
668 # include "state.h"
669 #undef VAR 721 #undef SYM
670 } 722 }
671 else 723 else
672 slot = coro->slot;
673
674 if (slot)
675 { 724 {
676 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
677 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
678 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
679 rss += slot->tmps_max * sizeof (SV *);
680 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
681 rss += slot->scopestack_max * sizeof (I32);
682 rss += slot->savestack_max * sizeof (ANY);
683
684#if !PERL_VERSION_ATLEAST (5,10,0)
685 rss += slot->retstack_max * sizeof (OP *);
686#endif
687 } 728 }
688 } 729 }
689 730
690 return rss; 731 return rss;
691} 732}
… …
781 822
782 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
783} 824}
784 825
785static void 826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
786coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
787{ 843{
788 /* 844 /*
789 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
790 */ 846 */
… …
810 GvSV (PL_defgv) = newSV (0); 866 GvSV (PL_defgv) = newSV (0);
811 GvAV (PL_defgv) = coro->args; coro->args = 0; 867 GvAV (PL_defgv) = coro->args; coro->args = 0;
812 GvSV (PL_errgv) = newSV (0); 868 GvSV (PL_errgv) = newSV (0);
813 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 869 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
814 PL_rs = newSVsv (GvSV (irsgv)); 870 PL_rs = newSVsv (GvSV (irsgv));
815 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 871 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
816 872
817 { 873 {
818 dSP; 874 dSP;
819 LOGOP myop; 875 UNOP myop;
820 876
821 Zero (&myop, 1, LOGOP); 877 Zero (&myop, 1, UNOP);
822 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
823 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
824 881
825 PUSHMARK (SP); 882 PUSHMARK (SP);
826 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
827 PUTBACK; 884 PUTBACK;
828 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
829 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
830 SPAGAIN;
831 } 887 }
832 888
833 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
834 * likely was suspended in set_stacklevel, called from entersub. 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
835 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
836 * so we ENTER here for symmetry
837 */ 891 */
838 ENTER; 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
839} 893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
840 894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
905}
906
841static void 907static void
842coro_destroy (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
843{ 909{
844 if (!IN_DESTRUCT) 910 if (!IN_DESTRUCT)
845 { 911 {
846 /* restore all saved variables and stuff */ 912 /* restore all saved variables and stuff */
847 LEAVE_SCOPE (0); 913 LEAVE_SCOPE (0);
… …
867 933
868 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
869 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
870 936
871 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
872 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
873 941
874 coro_destroy_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
875} 943}
876 944
877static void 945INLINE void
878free_coro_mortal (pTHX) 946free_coro_mortal (pTHX)
879{ 947{
880 if (expect_true (coro_mortal)) 948 if (expect_true (coro_mortal))
881 { 949 {
882 SvREFCNT_dec (coro_mortal); 950 SvREFCNT_dec (coro_mortal);
… …
887static int 955static int
888runops_trace (pTHX) 956runops_trace (pTHX)
889{ 957{
890 COP *oldcop = 0; 958 COP *oldcop = 0;
891 int oldcxix = -2; 959 int oldcxix = -2;
892 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
893 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
894 962
895 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
896 { 964 {
897 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
916 : cx->blk_gimme == G_SCALAR ? bot + 1 984 : cx->blk_gimme == G_SCALAR ? bot + 1
917 : bot; 985 : bot;
918 986
919 av_extend (av, top - bot); 987 av_extend (av, top - bot);
920 while (bot < top) 988 while (bot < top)
921 av_push (av, SvREFCNT_inc (*bot++)); 989 av_push (av, SvREFCNT_inc_NN (*bot++));
922 990
923 PL_runops = RUNOPS_DEFAULT; 991 PL_runops = RUNOPS_DEFAULT;
924 ENTER; 992 ENTER;
925 SAVETMPS; 993 SAVETMPS;
926 EXTEND (SP, 3); 994 EXTEND (SP, 3);
… …
964 SAVETMPS; 1032 SAVETMPS;
965 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
966 PUSHMARK (SP); 1034 PUSHMARK (SP);
967 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
968 PUSHs (fullname); 1036 PUSHs (fullname);
969 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
970 PUTBACK; 1038 PUTBACK;
971 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
972 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
973 SPAGAIN; 1041 SPAGAIN;
974 FREETMPS; 1042 FREETMPS;
… …
1006 1074
1007 TAINT_NOT; 1075 TAINT_NOT;
1008 return 0; 1076 return 0;
1009} 1077}
1010 1078
1011/* inject a fake call to Coro::State::_cctx_init into the execution */ 1079static struct coro_cctx *cctx_ssl_cctx;
1012/* _cctx_init should be careful, as it could be called at almost any time */ 1080static struct CoroSLF cctx_ssl_frame;
1013/* during execution of a perl program */ 1081
1082static void
1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084{
1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1086 ta->next = 0;
1087}
1088
1089static int
1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091{
1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1014static void NOINLINE 1098static void NOINLINE
1015cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1016{ 1100{
1017 dSP;
1018 LOGOP myop;
1019
1020 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1021 1102
1022 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1023 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1024 1105
1025 Zero (&myop, 1, LOGOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1026 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1027 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1028 1110
1029 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1030 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1031 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1113 cctx_ssl_frame = slf_frame;
1032 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1033 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1034 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1035 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117}
1036 SPAGAIN; 1118
1119/* the tail of transfer: execute stuff we can only do after a transfer */
1120INLINE void
1121transfer_tail (pTHX)
1122{
1123 free_coro_mortal (aTHX);
1037} 1124}
1038 1125
1039/* 1126/*
1040 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1041 */ 1128 */
1042static void 1129static void
1043cctx_run (void *arg) 1130cctx_run (void *arg)
1044{ 1131{
1132#ifdef USE_ITHREADS
1133# if CORO_PTHREAD
1134 PERL_SET_CONTEXT (coro_thx);
1135# endif
1136#endif
1137 {
1045 dTHX; 1138 dTHX;
1046 1139
1047 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1140 /* normally we would need to skip the entersub here */
1048 UNLOCK; 1141 /* not doing so will re-execute it, which is exactly what we want */
1049
1050 /* we now skip the entersub that lead to transfer() */
1051 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1052 1143
1053 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1054 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1055 1146
1147 /* cctx_run is the alternative tail of transfer() */
1148 transfer_tail (aTHX);
1149
1056 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1057 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1058 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1059
1060 /* 1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1157
1158 /*
1061 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1062 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1063 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
1064 * bootstrap-time "top" top_env, as we cannot restore the "main" 1162 * bootstrap-time "top" top_env, as we cannot restore the "main"
1065 * coroutine as Coro has no such concept 1163 * coroutine as Coro has no such concept
1066 */ 1164 */
1067 PL_top_env = main_top_env; 1165 PL_top_env = main_top_env;
1068 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1166 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167 }
1069} 1168}
1070 1169
1071static coro_cctx * 1170static coro_cctx *
1072cctx_new () 1171cctx_new ()
1073{ 1172{
1074 coro_cctx *cctx; 1173 coro_cctx *cctx;
1174
1175 ++cctx_count;
1176 New (0, cctx, 1, coro_cctx);
1177
1178 cctx->gen = cctx_gen;
1179 cctx->flags = 0;
1180 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1181
1182 return cctx;
1183}
1184
1185/* create a new cctx only suitable as source */
1186static coro_cctx *
1187cctx_new_empty ()
1188{
1189 coro_cctx *cctx = cctx_new ();
1190
1191 cctx->sptr = 0;
1192 coro_create (&cctx->cctx, 0, 0, 0, 0);
1193
1194 return cctx;
1195}
1196
1197/* create a new cctx suitable as destination/running a perl interpreter */
1198static coro_cctx *
1199cctx_new_run ()
1200{
1201 coro_cctx *cctx = cctx_new ();
1075 void *stack_start; 1202 void *stack_start;
1076 size_t stack_size; 1203 size_t stack_size;
1077 1204
1078 ++cctx_count;
1079
1080 Newz (0, cctx, 1, coro_cctx);
1081
1082#if HAVE_MMAP 1205#if HAVE_MMAP
1083 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1206 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1084 /* mmap supposedly does allocate-on-write for us */ 1207 /* mmap supposedly does allocate-on-write for us */
1085 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1208 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1086 1209
1087 if (cctx->sptr != (void *)-1) 1210 if (cctx->sptr != (void *)-1)
1088 { 1211 {
1089# if CORO_STACKGUARD 1212 #if CORO_STACKGUARD
1090 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1213 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1091# endif 1214 #endif
1092 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1215 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1093 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1216 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1094 cctx->flags |= CC_MAPPED; 1217 cctx->flags |= CC_MAPPED;
1095 } 1218 }
1096 else 1219 else
1097#endif 1220#endif
1098 { 1221 {
1099 cctx->ssize = coro_stacksize * (long)sizeof (long); 1222 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1100 New (0, cctx->sptr, coro_stacksize, long); 1223 New (0, cctx->sptr, cctx_stacksize, long);
1101 1224
1102 if (!cctx->sptr) 1225 if (!cctx->sptr)
1103 { 1226 {
1104 perror ("FATAL: unable to allocate stack for coroutine"); 1227 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1105 _exit (EXIT_FAILURE); 1228 _exit (EXIT_FAILURE);
1106 } 1229 }
1107 1230
1108 stack_start = cctx->sptr; 1231 stack_start = cctx->sptr;
1109 stack_size = cctx->ssize; 1232 stack_size = cctx->ssize;
1110 } 1233 }
1111 1234
1112 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1235 #if CORO_USE_VALGRIND
1236 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1237 #endif
1238
1113 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1239 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1114 1240
1115 return cctx; 1241 return cctx;
1116} 1242}
1117 1243
… …
1120{ 1246{
1121 if (!cctx) 1247 if (!cctx)
1122 return; 1248 return;
1123 1249
1124 --cctx_count; 1250 --cctx_count;
1251 coro_destroy (&cctx->cctx);
1125 1252
1253 /* coro_transfer creates new, empty cctx's */
1254 if (cctx->sptr)
1255 {
1126#if CORO_USE_VALGRIND 1256 #if CORO_USE_VALGRIND
1127 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1257 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1128#endif 1258 #endif
1129 1259
1130#if HAVE_MMAP 1260#if HAVE_MMAP
1131 if (cctx->flags & CC_MAPPED) 1261 if (cctx->flags & CC_MAPPED)
1132 munmap (cctx->sptr, cctx->ssize); 1262 munmap (cctx->sptr, cctx->ssize);
1133 else 1263 else
1134#endif 1264#endif
1135 Safefree (cctx->sptr); 1265 Safefree (cctx->sptr);
1266 }
1136 1267
1137 Safefree (cctx); 1268 Safefree (cctx);
1138} 1269}
1139 1270
1140/* wether this cctx should be destructed */ 1271/* wether this cctx should be destructed */
1141#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1272#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1142 1273
1143static coro_cctx * 1274static coro_cctx *
1144cctx_get (pTHX) 1275cctx_get (pTHX)
1145{ 1276{
1146 while (expect_true (cctx_first)) 1277 while (expect_true (cctx_first))
… …
1153 return cctx; 1284 return cctx;
1154 1285
1155 cctx_destroy (cctx); 1286 cctx_destroy (cctx);
1156 } 1287 }
1157 1288
1158 return cctx_new (); 1289 return cctx_new_run ();
1159} 1290}
1160 1291
1161static void 1292static void
1162cctx_put (coro_cctx *cctx) 1293cctx_put (coro_cctx *cctx)
1163{ 1294{
1295 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1296
1164 /* free another cctx if overlimit */ 1297 /* free another cctx if overlimit */
1165 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1298 if (expect_false (cctx_idle >= cctx_max_idle))
1166 { 1299 {
1167 coro_cctx *first = cctx_first; 1300 coro_cctx *first = cctx_first;
1168 cctx_first = first->next; 1301 cctx_first = first->next;
1169 --cctx_idle; 1302 --cctx_idle;
1170 1303
… …
1179/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1180 1313
1181static void 1314static void
1182transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1183{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1184 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1185 { 1320 {
1186 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1187 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1188 1323
1189 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1190 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1191 1326
1192 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1193 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1194 1329
1195#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1196 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1197 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1198#endif 1333#endif
1199 } 1334 }
1200} 1335}
1201 1336
1202/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1203static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1204transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1205{ 1340{
1206 dSTACKLEVEL; 1341 dSTACKLEVEL;
1207 static volatile int has_throw;
1208 1342
1209 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
1210 if (expect_false (!next)) 1344 if (expect_false (!next))
1211 { 1345 {
1212 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1216 { 1350 {
1217 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
1218 1352
1219 if (expect_false (prev->flags & CF_NEW)) 1353 if (expect_false (prev->flags & CF_NEW))
1220 { 1354 {
1221 /* create a new empty context */ 1355 /* create a new empty/source context */
1222 Newz (0, prev->cctx, 1, coro_cctx); 1356 prev->cctx = cctx_new_empty ();
1223 prev->flags &= ~CF_NEW; 1357 prev->flags &= ~CF_NEW;
1224 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1225 } 1359 }
1226 1360
1227 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1228 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1229
1230 LOCK;
1231 1363
1232 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1233 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1234 1366
1235 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1242 else 1374 else
1243 load_perl (aTHX_ next); 1375 load_perl (aTHX_ next);
1244 1376
1245 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1246 1378
1247 /* possibly "free" the cctx */ 1379 /* possibly untie and reuse the cctx */
1248 if (expect_true ( 1380 if (expect_true (
1249 prev__cctx->idle_sp == STACKLEVEL 1381 prev__cctx->idle_sp == STACKLEVEL
1250 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1251 && !force_cctx 1383 && !force_cctx
1252 )) 1384 ))
1253 { 1385 {
1254 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1255 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1256 1388
1257 prev->cctx = 0; 1389 prev->cctx = 0;
1258 1390
1259 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1260 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1392 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1267 1399
1268 ++next->usecount; 1400 ++next->usecount;
1269 1401
1270 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1271 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1272
1273 has_throw = !!next->throw;
1274 1404
1275 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1276 { 1406 {
1277 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1278 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1279 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1280 } 1410 }
1281 1411
1282 free_coro_mortal (aTHX); 1412 transfer_tail (aTHX);
1283 UNLOCK;
1284
1285 if (expect_false (has_throw))
1286 {
1287 struct coro *coro = SvSTATE (coro_current);
1288
1289 if (coro->throw)
1290 {
1291 SV *exception = coro->throw;
1292 coro->throw = 0;
1293 sv_setsv (ERRSV, exception);
1294 croak (0);
1295 }
1296 }
1297 } 1413 }
1298} 1414}
1299
1300struct transfer_args
1301{
1302 struct coro *prev, *next;
1303};
1304 1415
1305#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1416#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1306#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1417#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1307 1418
1308/** high level stuff ********************************************************/ 1419/** high level stuff ********************************************************/
… …
1310static int 1421static int
1311coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1312{ 1423{
1313 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1314 return 0; 1425 return 0;
1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1315 1429
1316 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1317 1431
1318 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1319 { 1433 {
1320 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1321 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1322 LOCK;
1323 --coro_nready; 1436 --coro_nready;
1324 UNLOCK;
1325 } 1437 }
1326 else 1438 else
1327 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1328 1440
1329 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1330 { 1442 {
1331 struct coro temp; 1443 struct coro temp;
1332 1444
1333 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1334 croak ("FATAL: tried to destroy currently running coroutine");
1335 1446
1336 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1337 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1338 1449
1339 coro_destroy (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
1340 1451
1341 load_perl (aTHX_ &temp); 1452 load_perl (aTHX_ &temp);
1342 1453
1343 coro->slot = 0; 1454 coro->slot = 0;
1344 } 1455 }
1345 1456
1346 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1347 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1348 1461
1349 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1350 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1351 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1352 1465
… …
1390# define MGf_DUP 0 1503# define MGf_DUP 0
1391#endif 1504#endif
1392}; 1505};
1393 1506
1394static void 1507static void
1395prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1396{ 1509{
1397 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1398 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1399 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1400} 1513}
1401 1514
1402static void 1515static void
1403api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1404{ 1517{
1405 dTHX;
1406 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1407 1519
1408 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1409 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1410} 1522}
1411 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1412/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1413 1548
1414static void 1549INLINE void
1415coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1416{ 1551{
1417 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1418} 1553}
1419 1554
1420static SV * 1555INLINE SV *
1421coro_deq (pTHX) 1556coro_deq (pTHX)
1422{ 1557{
1423 int prio; 1558 int prio;
1424 1559
1425 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1428 1563
1429 return 0; 1564 return 0;
1430} 1565}
1431 1566
1432static int 1567static int
1433api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1434{ 1569{
1435 dTHX;
1436 struct coro *coro; 1570 struct coro *coro;
1437 SV *sv_hook; 1571 SV *sv_hook;
1438 void (*xs_hook)(void); 1572 void (*xs_hook)(void);
1439 1573
1440 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
… …
1445 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1446 return 0; 1580 return 0;
1447 1581
1448 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1449 1583
1450 LOCK;
1451
1452 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1453 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1454 1586
1455 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1587 coro_enq (aTHX_ coro);
1456 ++coro_nready; 1588 ++coro_nready;
1457 1589
1458 UNLOCK;
1459
1460 if (sv_hook) 1590 if (sv_hook)
1461 { 1591 {
1462 dSP; 1592 dSP;
1463 1593
1464 ENTER; 1594 ENTER;
1465 SAVETMPS; 1595 SAVETMPS;
1466 1596
1467 PUSHMARK (SP); 1597 PUSHMARK (SP);
1468 PUTBACK; 1598 PUTBACK;
1469 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1470 SPAGAIN;
1471 1600
1472 FREETMPS; 1601 FREETMPS;
1473 LEAVE; 1602 LEAVE;
1474 } 1603 }
1475 1604
… …
1478 1607
1479 return 1; 1608 return 1;
1480} 1609}
1481 1610
1482static int 1611static int
1483api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1484{ 1613{
1485 dTHX;
1486 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1487} 1615}
1488 1616
1489static void 1617INLINE void
1490prepare_schedule (pTHX_ struct transfer_args *ta) 1618prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1491{ 1619{
1492 SV *prev_sv, *next_sv; 1620 SV *prev_sv, *next_sv;
1493 1621
1494 for (;;) 1622 for (;;)
1495 { 1623 {
1496 LOCK;
1497 next_sv = coro_deq (aTHX); 1624 next_sv = coro_deq (aTHX);
1498 1625
1499 /* nothing to schedule: call the idle handler */ 1626 /* nothing to schedule: call the idle handler */
1500 if (expect_false (!next_sv)) 1627 if (expect_false (!next_sv))
1501 { 1628 {
1502 dSP; 1629 dSP;
1503 UNLOCK;
1504 1630
1505 ENTER; 1631 ENTER;
1506 SAVETMPS; 1632 SAVETMPS;
1507 1633
1508 PUSHMARK (SP); 1634 PUSHMARK (SP);
1509 PUTBACK; 1635 PUTBACK;
1510 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1636 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1511 SPAGAIN;
1512 1637
1513 FREETMPS; 1638 FREETMPS;
1514 LEAVE; 1639 LEAVE;
1515 continue; 1640 continue;
1516 } 1641 }
1517 1642
1518 ta->next = SvSTATE (next_sv); 1643 ta->next = SvSTATE_hv (next_sv);
1519 1644
1520 /* cannot transfer to destroyed coros, skip and look for next */ 1645 /* cannot transfer to destroyed coros, skip and look for next */
1521 if (expect_false (ta->next->flags & CF_DESTROYED)) 1646 if (expect_false (ta->next->flags & CF_DESTROYED))
1522 { 1647 {
1523 UNLOCK;
1524 SvREFCNT_dec (next_sv); 1648 SvREFCNT_dec (next_sv);
1525 /* coro_nready is already taken care of by destroy */ 1649 /* coro_nready has already been taken care of by destroy */
1526 continue; 1650 continue;
1527 } 1651 }
1528 1652
1529 --coro_nready; 1653 --coro_nready;
1530 UNLOCK;
1531 break; 1654 break;
1532 } 1655 }
1533 1656
1534 /* free this only after the transfer */ 1657 /* free this only after the transfer */
1535 prev_sv = SvRV (coro_current); 1658 prev_sv = SvRV (coro_current);
1536 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1537 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1538 assert (ta->next->flags & CF_READY); 1661 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1539 ta->next->flags &= ~CF_READY; 1662 ta->next->flags &= ~CF_READY;
1540 SvRV_set (coro_current, next_sv); 1663 SvRV_set (coro_current, next_sv);
1541 1664
1542 LOCK;
1543 free_coro_mortal (aTHX); 1665 free_coro_mortal (aTHX);
1544 coro_mortal = prev_sv; 1666 coro_mortal = prev_sv;
1545 UNLOCK;
1546} 1667}
1547 1668
1548static void 1669INLINE void
1549prepare_cede (pTHX_ struct transfer_args *ta) 1670prepare_cede (pTHX_ struct coro_transfer_args *ta)
1550{ 1671{
1551 api_ready (coro_current); 1672 api_ready (aTHX_ coro_current);
1552 prepare_schedule (aTHX_ ta); 1673 prepare_schedule (aTHX_ ta);
1553} 1674}
1554 1675
1676INLINE void
1677prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1678{
1679 SV *prev = SvRV (coro_current);
1680
1681 if (coro_nready)
1682 {
1683 prepare_schedule (aTHX_ ta);
1684 api_ready (aTHX_ prev);
1685 }
1686 else
1687 prepare_nop (aTHX_ ta);
1688}
1689
1690static void
1691api_schedule (pTHX)
1692{
1693 struct coro_transfer_args ta;
1694
1695 prepare_schedule (aTHX_ &ta);
1696 TRANSFER (ta, 1);
1697}
1698
1555static int 1699static int
1556prepare_cede_notself (pTHX_ struct transfer_args *ta) 1700api_cede (pTHX)
1557{ 1701{
1558 if (coro_nready) 1702 struct coro_transfer_args ta;
1559 { 1703
1560 SV *prev = SvRV (coro_current);
1561 prepare_schedule (aTHX_ ta); 1704 prepare_cede (aTHX_ &ta);
1562 api_ready (prev); 1705
1706 if (expect_true (ta.prev != ta.next))
1707 {
1708 TRANSFER (ta, 1);
1563 return 1; 1709 return 1;
1564 } 1710 }
1565 else 1711 else
1566 return 0; 1712 return 0;
1567} 1713}
1568 1714
1569static void
1570api_schedule (void)
1571{
1572 dTHX;
1573 struct transfer_args ta;
1574
1575 prepare_schedule (aTHX_ &ta);
1576 TRANSFER (ta, 1);
1577}
1578
1579static int 1715static int
1580api_cede (void) 1716api_cede_notself (pTHX)
1581{ 1717{
1582 dTHX; 1718 if (coro_nready)
1719 {
1583 struct transfer_args ta; 1720 struct coro_transfer_args ta;
1584 1721
1585 prepare_cede (aTHX_ &ta); 1722 prepare_cede_notself (aTHX_ &ta);
1586
1587 if (expect_true (ta.prev != ta.next))
1588 {
1589 TRANSFER (ta, 1); 1723 TRANSFER (ta, 1);
1590 return 1; 1724 return 1;
1591 } 1725 }
1592 else 1726 else
1593 return 0; 1727 return 0;
1594} 1728}
1595 1729
1596static int 1730static void
1597api_cede_notself (void)
1598{
1599 dTHX;
1600 struct transfer_args ta;
1601
1602 if (prepare_cede_notself (aTHX_ &ta))
1603 {
1604 TRANSFER (ta, 1);
1605 return 1;
1606 }
1607 else
1608 return 0;
1609}
1610
1611static void
1612api_trace (SV *coro_sv, int flags) 1731api_trace (pTHX_ SV *coro_sv, int flags)
1613{ 1732{
1614 dTHX;
1615 struct coro *coro = SvSTATE (coro_sv); 1733 struct coro *coro = SvSTATE (coro_sv);
1616 1734
1617 if (flags & CC_TRACE) 1735 if (flags & CC_TRACE)
1618 { 1736 {
1619 if (!coro->cctx) 1737 if (!coro->cctx)
1620 coro->cctx = cctx_new (); 1738 coro->cctx = cctx_new_run ();
1621 else if (!(coro->cctx->flags & CC_TRACE)) 1739 else if (!(coro->cctx->flags & CC_TRACE))
1622 croak ("cannot enable tracing on coroutine with custom stack"); 1740 croak ("cannot enable tracing on coroutine with custom stack,");
1623 1741
1624 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1742 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1625 } 1743 }
1626 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1744 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1627 { 1745 {
… …
1632 else 1750 else
1633 coro->slot->runops = RUNOPS_DEFAULT; 1751 coro->slot->runops = RUNOPS_DEFAULT;
1634 } 1752 }
1635} 1753}
1636 1754
1755/*****************************************************************************/
1756/* async pool handler */
1757
1637static int 1758static int
1638coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1759slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1639{ 1760{
1640 AV *padlist; 1761 HV *hv = (HV *)SvRV (coro_current);
1641 AV *av = (AV *)mg->mg_obj; 1762 struct coro *coro = (struct coro *)frame->data;
1642 1763
1643 abort (); 1764 if (!coro->invoke_cb)
1765 return 1; /* loop till we have invoke */
1766 else
1767 {
1768 hv_store (hv, "desc", sizeof ("desc") - 1,
1769 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1770
1771 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1772
1773 {
1774 dSP;
1775 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1776 PUTBACK;
1777 }
1778
1779 SvREFCNT_dec (GvAV (PL_defgv));
1780 GvAV (PL_defgv) = coro->invoke_av;
1781 coro->invoke_av = 0;
1782
1783 return 0;
1784 }
1785}
1786
1787static void
1788slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1789{
1790 HV *hv = (HV *)SvRV (coro_current);
1791 struct coro *coro = SvSTATE_hv ((SV *)hv);
1792
1793 if (expect_true (coro->saved_deffh))
1794 {
1795 /* subsequent iteration */
1796 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1797 coro->saved_deffh = 0;
1798
1799 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1800 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1801 {
1802 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1803 coro->invoke_av = newAV ();
1804
1805 frame->prepare = prepare_nop;
1806 }
1807 else
1808 {
1809 av_clear (GvAV (PL_defgv));
1810 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1811
1812 coro->prio = 0;
1813
1814 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1815 api_trace (aTHX_ coro_current, 0);
1816
1817 frame->prepare = prepare_schedule;
1818 av_push (av_async_pool, SvREFCNT_inc (hv));
1819 }
1820 }
1821 else
1822 {
1823 /* first iteration, simply fall through */
1824 frame->prepare = prepare_nop;
1825 }
1826
1827 frame->check = slf_check_pool_handler;
1828 frame->data = (void *)coro;
1829}
1830
1831/*****************************************************************************/
1832/* rouse callback */
1833
1834#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1835
1836static void
1837coro_rouse_callback (pTHX_ CV *cv)
1838{
1839 dXSARGS;
1840 SV *data = (SV *)GENSUB_ARG;
1841
1842 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843 {
1844 /* first call, set args */
1845 AV *av = newAV ();
1846 SV *coro = SvRV (data);
1847
1848 SvRV_set (data, (SV *)av);
1849 api_ready (aTHX_ coro);
1850 SvREFCNT_dec (coro);
1851
1852 /* better take a full copy of the arguments */
1853 while (items--)
1854 av_store (av, items, newSVsv (ST (items)));
1855 }
1856
1857 XSRETURN_EMPTY;
1858}
1859
1860static int
1861slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1862{
1863 SV *data = (SV *)frame->data;
1864
1865 if (CORO_THROW)
1866 return 0;
1867
1868 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1869 return 1;
1870
1871 /* now push all results on the stack */
1872 {
1873 dSP;
1874 AV *av = (AV *)SvRV (data);
1875 int i;
1876
1877 EXTEND (SP, AvFILLp (av) + 1);
1878 for (i = 0; i <= AvFILLp (av); ++i)
1879 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880
1881 /* we have stolen the elements, so ste length to zero and free */
1882 AvFILLp (av) = -1;
1883 av_undef (av);
1884
1885 PUTBACK;
1886 }
1644 1887
1645 return 0; 1888 return 0;
1646} 1889}
1647 1890
1648static MGVTBL coro_gensub_vtbl = { 1891static void
1649 0, 0, 0, 0, 1892slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1650 coro_gensub_free 1893{
1651}; 1894 SV *cb;
1895
1896 if (items)
1897 cb = arg [0];
1898 else
1899 {
1900 struct coro *coro = SvSTATE_current;
1901
1902 if (!coro->rouse_cb)
1903 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1904
1905 cb = sv_2mortal (coro->rouse_cb);
1906 coro->rouse_cb = 0;
1907 }
1908
1909 if (!SvROK (cb)
1910 || SvTYPE (SvRV (cb)) != SVt_PVCV
1911 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912 croak ("Coro::rouse_wait called with illegal callback argument,");
1913
1914 {
1915 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1916 SV *data = (SV *)GENSUB_ARG;
1917
1918 frame->data = (void *)data;
1919 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920 frame->check = slf_check_rouse_wait;
1921 }
1922}
1923
1924static SV *
1925coro_new_rouse_cb (pTHX)
1926{
1927 HV *hv = (HV *)SvRV (coro_current);
1928 struct coro *coro = SvSTATE_hv (hv);
1929 SV *data = newRV_inc ((SV *)hv);
1930 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1931
1932 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933 SvREFCNT_dec (data); /* magicext increases the refcount */
1934
1935 SvREFCNT_dec (coro->rouse_cb);
1936 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1937
1938 return cb;
1939}
1940
1941/*****************************************************************************/
1942/* schedule-like-function opcode (SLF) */
1943
1944static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1945static const CV *slf_cv;
1946static SV **slf_argv;
1947static int slf_argc, slf_arga; /* count, allocated */
1948static I32 slf_ax; /* top of stack, for restore */
1949
1950/* this restores the stack in the case we patched the entersub, to */
1951/* recreate the stack frame as perl will on following calls */
1952/* since entersub cleared the stack */
1953static OP *
1954pp_restore (pTHX)
1955{
1956 int i;
1957 SV **SP = PL_stack_base + slf_ax;
1958
1959 PUSHMARK (SP);
1960
1961 EXTEND (SP, slf_argc + 1);
1962
1963 for (i = 0; i < slf_argc; ++i)
1964 PUSHs (sv_2mortal (slf_argv [i]));
1965
1966 PUSHs ((SV *)CvGV (slf_cv));
1967
1968 RETURNOP (slf_restore.op_first);
1969}
1970
1971static void
1972slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1973{
1974 SV **arg = (SV **)slf_frame.data;
1975
1976 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1977}
1978
1979static void
1980slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1981{
1982 if (items != 2)
1983 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1984
1985 frame->prepare = slf_prepare_transfer;
1986 frame->check = slf_check_nop;
1987 frame->data = (void *)arg; /* let's hope it will stay valid */
1988}
1989
1990static void
1991slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992{
1993 frame->prepare = prepare_schedule;
1994 frame->check = slf_check_nop;
1995}
1996
1997static void
1998slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999{
2000 frame->prepare = prepare_cede;
2001 frame->check = slf_check_nop;
2002}
2003
2004static void
2005slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2006{
2007 frame->prepare = prepare_cede_notself;
2008 frame->check = slf_check_nop;
2009}
2010
2011/*
2012 * these not obviously related functions are all rolled into one
2013 * function to increase chances that they all will call transfer with the same
2014 * stack offset
2015 * SLF stands for "schedule-like-function".
2016 */
2017static OP *
2018pp_slf (pTHX)
2019{
2020 I32 checkmark; /* mark SP to see how many elements check has pushed */
2021
2022 /* set up the slf frame, unless it has already been set-up */
2023 /* the latter happens when a new coro has been started */
2024 /* or when a new cctx was attached to an existing coroutine */
2025 if (expect_true (!slf_frame.prepare))
2026 {
2027 /* first iteration */
2028 dSP;
2029 SV **arg = PL_stack_base + TOPMARK + 1;
2030 int items = SP - arg; /* args without function object */
2031 SV *gv = *sp;
2032
2033 /* do a quick consistency check on the "function" object, and if it isn't */
2034 /* for us, divert to the real entersub */
2035 if (SvTYPE (gv) != SVt_PVGV
2036 || !GvCV (gv)
2037 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2038 return PL_ppaddr[OP_ENTERSUB](aTHX);
2039
2040 if (!(PL_op->op_flags & OPf_STACKED))
2041 {
2042 /* ampersand-form of call, use @_ instead of stack */
2043 AV *av = GvAV (PL_defgv);
2044 arg = AvARRAY (av);
2045 items = AvFILLp (av) + 1;
2046 }
2047
2048 /* now call the init function, which needs to set up slf_frame */
2049 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2050 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2051
2052 /* pop args */
2053 SP = PL_stack_base + POPMARK;
2054
2055 PUTBACK;
2056 }
2057
2058 /* now that we have a slf_frame, interpret it! */
2059 /* we use a callback system not to make the code needlessly */
2060 /* complicated, but so we can run multiple perl coros from one cctx */
2061
2062 do
2063 {
2064 struct coro_transfer_args ta;
2065
2066 slf_frame.prepare (aTHX_ &ta);
2067 TRANSFER (ta, 0);
2068
2069 checkmark = PL_stack_sp - PL_stack_base;
2070 }
2071 while (slf_frame.check (aTHX_ &slf_frame));
2072
2073 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2074
2075 /* exception handling */
2076 if (expect_false (CORO_THROW))
2077 {
2078 SV *exception = sv_2mortal (CORO_THROW);
2079
2080 CORO_THROW = 0;
2081 sv_setsv (ERRSV, exception);
2082 croak (0);
2083 }
2084
2085 /* return value handling - mostly like entersub */
2086 /* make sure we put something on the stack in scalar context */
2087 if (GIMME_V == G_SCALAR)
2088 {
2089 dSP;
2090 SV **bot = PL_stack_base + checkmark;
2091
2092 if (sp == bot) /* too few, push undef */
2093 bot [1] = &PL_sv_undef;
2094 else if (sp != bot + 1) /* too many, take last one */
2095 bot [1] = *sp;
2096
2097 SP = bot + 1;
2098
2099 PUTBACK;
2100 }
2101
2102 return NORMAL;
2103}
2104
2105static void
2106api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2107{
2108 int i;
2109 SV **arg = PL_stack_base + ax;
2110 int items = PL_stack_sp - arg + 1;
2111
2112 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2113
2114 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2115 && PL_op->op_ppaddr != pp_slf)
2116 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2117
2118 CvFLAGS (cv) |= CVf_SLF;
2119 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2120 slf_cv = cv;
2121
2122 /* we patch the op, and then re-run the whole call */
2123 /* we have to put the same argument on the stack for this to work */
2124 /* and this will be done by pp_restore */
2125 slf_restore.op_next = (OP *)&slf_restore;
2126 slf_restore.op_type = OP_CUSTOM;
2127 slf_restore.op_ppaddr = pp_restore;
2128 slf_restore.op_first = PL_op;
2129
2130 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2131
2132 if (PL_op->op_flags & OPf_STACKED)
2133 {
2134 if (items > slf_arga)
2135 {
2136 slf_arga = items;
2137 free (slf_argv);
2138 slf_argv = malloc (slf_arga * sizeof (SV *));
2139 }
2140
2141 slf_argc = items;
2142
2143 for (i = 0; i < items; ++i)
2144 slf_argv [i] = SvREFCNT_inc (arg [i]);
2145 }
2146 else
2147 slf_argc = 0;
2148
2149 PL_op->op_ppaddr = pp_slf;
2150 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2151
2152 PL_op = (OP *)&slf_restore;
2153}
1652 2154
1653/*****************************************************************************/ 2155/*****************************************************************************/
1654/* PerlIO::cede */ 2156/* PerlIO::cede */
1655 2157
1656typedef struct 2158typedef struct
… …
1684 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2186 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1685 double now = nvtime (); 2187 double now = nvtime ();
1686 2188
1687 if (now >= self->next) 2189 if (now >= self->next)
1688 { 2190 {
1689 api_cede (); 2191 api_cede (aTHX);
1690 self->next = now + self->every; 2192 self->next = now + self->every;
1691 } 2193 }
1692 2194
1693 return PerlIOBuf_flush (f); 2195 return PerlIOBuf_flush (aTHX_ f);
1694} 2196}
1695 2197
1696static PerlIO_funcs PerlIO_cede = 2198static PerlIO_funcs PerlIO_cede =
1697{ 2199{
1698 sizeof(PerlIO_funcs), 2200 sizeof(PerlIO_funcs),
… …
1723 PerlIOBuf_get_ptr, 2225 PerlIOBuf_get_ptr,
1724 PerlIOBuf_get_cnt, 2226 PerlIOBuf_get_cnt,
1725 PerlIOBuf_set_ptrcnt, 2227 PerlIOBuf_set_ptrcnt,
1726}; 2228};
1727 2229
2230/*****************************************************************************/
2231/* Coro::Semaphore & Coro::Signal */
2232
2233static SV *
2234coro_waitarray_new (pTHX_ int count)
2235{
2236 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237 AV *av = newAV ();
2238 SV **ary;
2239
2240 /* unfortunately, building manually saves memory */
2241 Newx (ary, 2, SV *);
2242 AvALLOC (av) = ary;
2243 /*AvARRAY (av) = ary;*/
2244 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2245 AvMAX (av) = 1;
2246 AvFILLp (av) = 0;
2247 ary [0] = newSViv (count);
2248
2249 return newRV_noinc ((SV *)av);
2250}
2251
2252/* semaphore */
2253
2254static void
2255coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2256{
2257 SV *count_sv = AvARRAY (av)[0];
2258 IV count = SvIVX (count_sv);
2259
2260 count += adjust;
2261 SvIVX (count_sv) = count;
2262
2263 /* now wake up as many waiters as are expected to lock */
2264 while (count > 0 && AvFILLp (av) > 0)
2265 {
2266 SV *cb;
2267
2268 /* swap first two elements so we can shift a waiter */
2269 AvARRAY (av)[0] = AvARRAY (av)[1];
2270 AvARRAY (av)[1] = count_sv;
2271 cb = av_shift (av);
2272
2273 if (SvOBJECT (cb))
2274 {
2275 api_ready (aTHX_ cb);
2276 --count;
2277 }
2278 else if (SvTYPE (cb) == SVt_PVCV)
2279 {
2280 dSP;
2281 PUSHMARK (SP);
2282 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2283 PUTBACK;
2284 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2285 }
2286
2287 SvREFCNT_dec (cb);
2288 }
2289}
2290
2291static void
2292coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2293{
2294 /* call $sem->adjust (0) to possibly wake up some other waiters */
2295 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2296}
2297
2298static int
2299slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2300{
2301 AV *av = (AV *)frame->data;
2302 SV *count_sv = AvARRAY (av)[0];
2303
2304 /* if we are about to throw, don't actually acquire the lock, just throw */
2305 if (CORO_THROW)
2306 return 0;
2307 else if (SvIVX (count_sv) > 0)
2308 {
2309 SvSTATE_current->on_destroy = 0;
2310
2311 if (acquire)
2312 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2313 else
2314 coro_semaphore_adjust (aTHX_ av, 0);
2315
2316 return 0;
2317 }
2318 else
2319 {
2320 int i;
2321 /* if we were woken up but can't down, we look through the whole */
2322 /* waiters list and only add us if we aren't in there already */
2323 /* this avoids some degenerate memory usage cases */
2324
2325 for (i = 1; i <= AvFILLp (av); ++i)
2326 if (AvARRAY (av)[i] == SvRV (coro_current))
2327 return 1;
2328
2329 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2330 return 1;
2331 }
2332}
2333
2334static int
2335slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2336{
2337 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2338}
2339
2340static int
2341slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2342{
2343 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2344}
2345
2346static void
2347slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2348{
2349 AV *av = (AV *)SvRV (arg [0]);
2350
2351 if (SvIVX (AvARRAY (av)[0]) > 0)
2352 {
2353 frame->data = (void *)av;
2354 frame->prepare = prepare_nop;
2355 }
2356 else
2357 {
2358 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2359
2360 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2361 frame->prepare = prepare_schedule;
2362
2363 /* to avoid race conditions when a woken-up coro gets terminated */
2364 /* we arrange for a temporary on_destroy that calls adjust (0) */
2365 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2366 }
2367}
2368
2369static void
2370slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2371{
2372 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2373 frame->check = slf_check_semaphore_down;
2374}
2375
2376static void
2377slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items >= 2)
2380 {
2381 /* callback form */
2382 AV *av = (AV *)SvRV (arg [0]);
2383 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2384
2385 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2386
2387 if (SvIVX (AvARRAY (av)[0]) > 0)
2388 coro_semaphore_adjust (aTHX_ av, 0);
2389
2390 frame->prepare = prepare_nop;
2391 frame->check = slf_check_nop;
2392 }
2393 else
2394 {
2395 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2396 frame->check = slf_check_semaphore_wait;
2397 }
2398}
2399
2400/* signal */
2401
2402static void
2403coro_signal_wake (pTHX_ AV *av, int count)
2404{
2405 SvIVX (AvARRAY (av)[0]) = 0;
2406
2407 /* now signal count waiters */
2408 while (count > 0 && AvFILLp (av) > 0)
2409 {
2410 SV *cb;
2411
2412 /* swap first two elements so we can shift a waiter */
2413 cb = AvARRAY (av)[0];
2414 AvARRAY (av)[0] = AvARRAY (av)[1];
2415 AvARRAY (av)[1] = cb;
2416
2417 cb = av_shift (av);
2418
2419 api_ready (aTHX_ cb);
2420 sv_setiv (cb, 0); /* signal waiter */
2421 SvREFCNT_dec (cb);
2422
2423 --count;
2424 }
2425}
2426
2427static int
2428slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 /* if we are about to throw, also stop waiting */
2431 return SvROK ((SV *)frame->data) && !CORO_THROW;
2432}
2433
2434static void
2435slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 AV *av = (AV *)SvRV (arg [0]);
2438
2439 if (SvIVX (AvARRAY (av)[0]))
2440 {
2441 SvIVX (AvARRAY (av)[0]) = 0;
2442 frame->prepare = prepare_nop;
2443 frame->check = slf_check_nop;
2444 }
2445 else
2446 {
2447 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2448
2449 av_push (av, waiter);
2450
2451 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452 frame->prepare = prepare_schedule;
2453 frame->check = slf_check_signal_wait;
2454 }
2455}
2456
2457/*****************************************************************************/
2458/* Coro::AIO */
2459
2460#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2461
2462/* helper storage struct */
2463struct io_state
2464{
2465 int errorno;
2466 I32 laststype; /* U16 in 5.10.0 */
2467 int laststatval;
2468 Stat_t statcache;
2469};
2470
2471static void
2472coro_aio_callback (pTHX_ CV *cv)
2473{
2474 dXSARGS;
2475 AV *state = (AV *)GENSUB_ARG;
2476 SV *coro = av_pop (state);
2477 SV *data_sv = newSV (sizeof (struct io_state));
2478
2479 av_extend (state, items - 1);
2480
2481 sv_upgrade (data_sv, SVt_PV);
2482 SvCUR_set (data_sv, sizeof (struct io_state));
2483 SvPOK_only (data_sv);
2484
2485 {
2486 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2487
2488 data->errorno = errno;
2489 data->laststype = PL_laststype;
2490 data->laststatval = PL_laststatval;
2491 data->statcache = PL_statcache;
2492 }
2493
2494 /* now build the result vector out of all the parameters and the data_sv */
2495 {
2496 int i;
2497
2498 for (i = 0; i < items; ++i)
2499 av_push (state, SvREFCNT_inc_NN (ST (i)));
2500 }
2501
2502 av_push (state, data_sv);
2503
2504 api_ready (aTHX_ coro);
2505 SvREFCNT_dec (coro);
2506 SvREFCNT_dec ((AV *)state);
2507}
2508
2509static int
2510slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2511{
2512 AV *state = (AV *)frame->data;
2513
2514 /* if we are about to throw, return early */
2515 /* this does not cancel the aio request, but at least */
2516 /* it quickly returns */
2517 if (CORO_THROW)
2518 return 0;
2519
2520 /* one element that is an RV? repeat! */
2521 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2522 return 1;
2523
2524 /* restore status */
2525 {
2526 SV *data_sv = av_pop (state);
2527 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2528
2529 errno = data->errorno;
2530 PL_laststype = data->laststype;
2531 PL_laststatval = data->laststatval;
2532 PL_statcache = data->statcache;
2533
2534 SvREFCNT_dec (data_sv);
2535 }
2536
2537 /* push result values */
2538 {
2539 dSP;
2540 int i;
2541
2542 EXTEND (SP, AvFILLp (state) + 1);
2543 for (i = 0; i <= AvFILLp (state); ++i)
2544 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2545
2546 PUTBACK;
2547 }
2548
2549 return 0;
2550}
2551
2552static void
2553slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2556 SV *coro_hv = SvRV (coro_current);
2557 struct coro *coro = SvSTATE_hv (coro_hv);
2558
2559 /* put our coroutine id on the state arg */
2560 av_push (state, SvREFCNT_inc_NN (coro_hv));
2561
2562 /* first see whether we have a non-zero priority and set it as AIO prio */
2563 if (coro->prio)
2564 {
2565 dSP;
2566
2567 static SV *prio_cv;
2568 static SV *prio_sv;
2569
2570 if (expect_false (!prio_cv))
2571 {
2572 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2573 prio_sv = newSViv (0);
2574 }
2575
2576 PUSHMARK (SP);
2577 sv_setiv (prio_sv, coro->prio);
2578 XPUSHs (prio_sv);
2579
2580 PUTBACK;
2581 call_sv (prio_cv, G_VOID | G_DISCARD);
2582 }
2583
2584 /* now call the original request */
2585 {
2586 dSP;
2587 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2588 int i;
2589
2590 PUSHMARK (SP);
2591
2592 /* first push all args to the stack */
2593 EXTEND (SP, items + 1);
2594
2595 for (i = 0; i < items; ++i)
2596 PUSHs (arg [i]);
2597
2598 /* now push the callback closure */
2599 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2600
2601 /* now call the AIO function - we assume our request is uncancelable */
2602 PUTBACK;
2603 call_sv ((SV *)req, G_VOID | G_DISCARD);
2604 }
2605
2606 /* now that the requets is going, we loop toll we have a result */
2607 frame->data = (void *)state;
2608 frame->prepare = prepare_schedule;
2609 frame->check = slf_check_aio_req;
2610}
2611
2612static void
2613coro_aio_req_xs (pTHX_ CV *cv)
2614{
2615 dXSARGS;
2616
2617 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2618
2619 XSRETURN_EMPTY;
2620}
2621
2622/*****************************************************************************/
1728 2623
1729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1730 2625
1731PROTOTYPES: DISABLE 2626PROTOTYPES: DISABLE
1732 2627
1733BOOT: 2628BOOT:
1734{ 2629{
1735#ifdef USE_ITHREADS 2630#ifdef USE_ITHREADS
1736 MUTEX_INIT (&coro_mutex); 2631# if CORO_PTHREAD
2632 coro_thx = PERL_GET_CONTEXT;
2633# endif
1737#endif 2634#endif
1738 BOOT_PAGESIZE; 2635 BOOT_PAGESIZE;
1739 2636
1740 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2637 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1741 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2638 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1759 main_top_env = PL_top_env; 2656 main_top_env = PL_top_env;
1760 2657
1761 while (main_top_env->je_prev) 2658 while (main_top_env->je_prev)
1762 main_top_env = main_top_env->je_prev; 2659 main_top_env = main_top_env->je_prev;
1763 2660
2661 {
2662 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663
2664 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665 hv_store_ent (PL_custom_op_names, slf,
2666 newSVpv ("coro_slf", 0), 0);
2667
2668 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669 hv_store_ent (PL_custom_op_descs, slf,
2670 newSVpv ("coro schedule like function", 0), 0);
2671 }
2672
1764 coroapi.ver = CORO_API_VERSION; 2673 coroapi.ver = CORO_API_VERSION;
1765 coroapi.rev = CORO_API_REVISION; 2674 coroapi.rev = CORO_API_REVISION;
2675
1766 coroapi.transfer = api_transfer; 2676 coroapi.transfer = api_transfer;
2677
2678 coroapi.sv_state = SvSTATE_;
2679 coroapi.execute_slf = api_execute_slf;
2680 coroapi.prepare_nop = prepare_nop;
2681 coroapi.prepare_schedule = prepare_schedule;
2682 coroapi.prepare_cede = prepare_cede;
2683 coroapi.prepare_cede_notself = prepare_cede_notself;
1767 2684
1768 { 2685 {
1769 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2686 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1770 2687
1771 if (!svp) croak ("Time::HiRes is required"); 2688 if (!svp) croak ("Time::HiRes is required");
… …
1777 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2694 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1778} 2695}
1779 2696
1780SV * 2697SV *
1781new (char *klass, ...) 2698new (char *klass, ...)
2699 ALIAS:
2700 Coro::new = 1
1782 CODE: 2701 CODE:
1783{ 2702{
1784 struct coro *coro; 2703 struct coro *coro;
1785 MAGIC *mg; 2704 MAGIC *mg;
1786 HV *hv; 2705 HV *hv;
2706 CV *cb;
1787 int i; 2707 int i;
2708
2709 if (items > 1)
2710 {
2711 cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713 if (!ix)
2714 {
2715 if (CvISXSUB (cb))
2716 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718 if (!CvROOT (cb))
2719 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720 }
2721 }
1788 2722
1789 Newz (0, coro, 1, struct coro); 2723 Newz (0, coro, 1, struct coro);
1790 coro->args = newAV (); 2724 coro->args = newAV ();
1791 coro->flags = CF_NEW; 2725 coro->flags = CF_NEW;
1792 2726
… …
1797 coro->hv = hv = newHV (); 2731 coro->hv = hv = newHV ();
1798 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2732 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1799 mg->mg_flags |= MGf_DUP; 2733 mg->mg_flags |= MGf_DUP;
1800 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2734 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1801 2735
2736 if (items > 1)
2737 {
1802 av_extend (coro->args, items - 1); 2738 av_extend (coro->args, items - 1 + ix - 1);
2739
2740 if (ix)
2741 {
2742 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743 cb = cv_coro_run;
2744 }
2745
2746 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
1803 for (i = 1; i < items; i++) 2748 for (i = 2; i < items; i++)
1804 av_push (coro->args, newSVsv (ST (i))); 2749 av_push (coro->args, newSVsv (ST (i)));
2750 }
1805} 2751}
1806 OUTPUT: 2752 OUTPUT:
1807 RETVAL 2753 RETVAL
1808 2754
1809# these not obviously related functions are all rolled into the same xs
1810# function to increase chances that they all will call transfer with the same
1811# stack offset
1812void 2755void
1813_set_stacklevel (...) 2756transfer (...)
1814 ALIAS: 2757 PROTOTYPE: $$
1815 Coro::State::transfer = 1 2758 CODE:
1816 Coro::schedule = 2 2759 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1817 Coro::cede = 3
1818 Coro::cede_notself = 4
1819 CODE:
1820{
1821 struct transfer_args ta;
1822
1823 PUTBACK;
1824 switch (ix)
1825 {
1826 case 0:
1827 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1828 ta.next = 0;
1829 break;
1830
1831 case 1:
1832 if (items != 2)
1833 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1834
1835 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1836 break;
1837
1838 case 2:
1839 prepare_schedule (aTHX_ &ta);
1840 break;
1841
1842 case 3:
1843 prepare_cede (aTHX_ &ta);
1844 break;
1845
1846 case 4:
1847 if (!prepare_cede_notself (aTHX_ &ta))
1848 XSRETURN_EMPTY;
1849
1850 break;
1851 }
1852 SPAGAIN;
1853
1854 BARRIER;
1855 PUTBACK;
1856 TRANSFER (ta, 0);
1857 SPAGAIN; /* might be the sp of a different coroutine now */
1858 /* be extra careful not to ever do anything after TRANSFER */
1859}
1860 2760
1861bool 2761bool
1862_destroy (SV *coro_sv) 2762_destroy (SV *coro_sv)
1863 CODE: 2763 CODE:
1864 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2764 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1871 CODE: 2771 CODE:
1872 _exit (code); 2772 _exit (code);
1873 2773
1874int 2774int
1875cctx_stacksize (int new_stacksize = 0) 2775cctx_stacksize (int new_stacksize = 0)
2776 PROTOTYPE: ;$
1876 CODE: 2777 CODE:
1877 RETVAL = coro_stacksize; 2778 RETVAL = cctx_stacksize;
1878 if (new_stacksize) 2779 if (new_stacksize)
2780 {
1879 coro_stacksize = new_stacksize; 2781 cctx_stacksize = new_stacksize;
2782 ++cctx_gen;
2783 }
1880 OUTPUT: 2784 OUTPUT:
1881 RETVAL 2785 RETVAL
1882 2786
1883int 2787int
2788cctx_max_idle (int max_idle = 0)
2789 PROTOTYPE: ;$
2790 CODE:
2791 RETVAL = cctx_max_idle;
2792 if (max_idle > 1)
2793 cctx_max_idle = max_idle;
2794 OUTPUT:
2795 RETVAL
2796
2797int
1884cctx_count () 2798cctx_count ()
2799 PROTOTYPE:
1885 CODE: 2800 CODE:
1886 RETVAL = cctx_count; 2801 RETVAL = cctx_count;
1887 OUTPUT: 2802 OUTPUT:
1888 RETVAL 2803 RETVAL
1889 2804
1890int 2805int
1891cctx_idle () 2806cctx_idle ()
2807 PROTOTYPE:
1892 CODE: 2808 CODE:
1893 RETVAL = cctx_idle; 2809 RETVAL = cctx_idle;
1894 OUTPUT: 2810 OUTPUT:
1895 RETVAL 2811 RETVAL
1896 2812
1897void 2813void
1898list () 2814list ()
2815 PROTOTYPE:
1899 PPCODE: 2816 PPCODE:
1900{ 2817{
1901 struct coro *coro; 2818 struct coro *coro;
1902 for (coro = coro_first; coro; coro = coro->next) 2819 for (coro = coro_first; coro; coro = coro->next)
1903 if (coro->hv) 2820 if (coro->hv)
… …
1962 RETVAL = boolSV (coro->flags & ix); 2879 RETVAL = boolSV (coro->flags & ix);
1963 OUTPUT: 2880 OUTPUT:
1964 RETVAL 2881 RETVAL
1965 2882
1966void 2883void
2884throw (Coro::State self, SV *throw = &PL_sv_undef)
2885 PROTOTYPE: $;$
2886 CODE:
2887{
2888 struct coro *current = SvSTATE_current;
2889 SV **throwp = self == current ? &CORO_THROW : &self->except;
2890 SvREFCNT_dec (*throwp);
2891 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892}
2893
2894void
1967api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2895api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2896 PROTOTYPE: $;$
2897 C_ARGS: aTHX_ coro, flags
1968 2898
1969SV * 2899SV *
1970has_cctx (Coro::State coro) 2900has_cctx (Coro::State coro)
1971 PROTOTYPE: $ 2901 PROTOTYPE: $
1972 CODE: 2902 CODE:
… …
1980 CODE: 2910 CODE:
1981 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2911 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1982 OUTPUT: 2912 OUTPUT:
1983 RETVAL 2913 RETVAL
1984 2914
1985IV 2915UV
1986rss (Coro::State coro) 2916rss (Coro::State coro)
1987 PROTOTYPE: $ 2917 PROTOTYPE: $
1988 ALIAS: 2918 ALIAS:
1989 usecount = 1 2919 usecount = 1
1990 CODE: 2920 CODE:
… …
1996 OUTPUT: 2926 OUTPUT:
1997 RETVAL 2927 RETVAL
1998 2928
1999void 2929void
2000force_cctx () 2930force_cctx ()
2931 PROTOTYPE:
2001 CODE: 2932 CODE:
2002 struct coro *coro = SvSTATE (coro_current);
2003 coro->cctx->idle_sp = 0; 2933 SvSTATE_current->cctx->idle_sp = 0;
2004
2005void
2006throw (Coro::State self, SV *throw = &PL_sv_undef)
2007 PROTOTYPE: $;$
2008 CODE:
2009 SvREFCNT_dec (self->throw);
2010 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2011 2934
2012void 2935void
2013swap_defsv (Coro::State self) 2936swap_defsv (Coro::State self)
2014 PROTOTYPE: $ 2937 PROTOTYPE: $
2015 ALIAS: 2938 ALIAS:
2016 swap_defav = 1 2939 swap_defav = 1
2017 CODE: 2940 CODE:
2018 if (!self->slot) 2941 if (!self->slot)
2019 croak ("cannot swap state with coroutine that has no saved state"); 2942 croak ("cannot swap state with coroutine that has no saved state,");
2020 else 2943 else
2021 { 2944 {
2022 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2945 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2023 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2946 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2024 2947
2025 SV *tmp = *src; *src = *dst; *dst = tmp; 2948 SV *tmp = *src; *src = *dst; *dst = tmp;
2026 } 2949 }
2027 2950
2951
2028MODULE = Coro::State PACKAGE = Coro 2952MODULE = Coro::State PACKAGE = Coro
2029 2953
2030BOOT: 2954BOOT:
2031{ 2955{
2032 int i; 2956 int i;
2033 2957
2034 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2958 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2035 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2959 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2036 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2960 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2037 2961 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2962 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2038 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2963 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2039 SvREADONLY_on (coro_current); 2964 SvREADONLY_on (coro_current);
2965
2966 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2967 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2968 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2969 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2040 2970
2041 coro_stash = gv_stashpv ("Coro", TRUE); 2971 coro_stash = gv_stashpv ("Coro", TRUE);
2042 2972
2043 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2973 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2044 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2974 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2049 2979
2050 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2980 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2051 coro_ready[i] = newAV (); 2981 coro_ready[i] = newAV ();
2052 2982
2053 { 2983 {
2054 SV *sv = perl_get_sv ("Coro::API", TRUE); 2984 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2055 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2056 2985
2057 coroapi.schedule = api_schedule; 2986 coroapi.schedule = api_schedule;
2058 coroapi.cede = api_cede; 2987 coroapi.cede = api_cede;
2059 coroapi.cede_notself = api_cede_notself; 2988 coroapi.cede_notself = api_cede_notself;
2060 coroapi.ready = api_ready; 2989 coroapi.ready = api_ready;
2061 coroapi.is_ready = api_is_ready; 2990 coroapi.is_ready = api_is_ready;
2062 coroapi.nready = &coro_nready; 2991 coroapi.nready = coro_nready;
2063 coroapi.current = coro_current; 2992 coroapi.current = coro_current;
2064 2993
2065 GCoroAPI = &coroapi; 2994 /*GCoroAPI = &coroapi;*/
2066 sv_setiv (sv, (IV)&coroapi); 2995 sv_setiv (sv, (IV)&coroapi);
2067 SvREADONLY_on (sv); 2996 SvREADONLY_on (sv);
2068 } 2997 }
2069} 2998}
2999
3000void
3001schedule (...)
3002 CODE:
3003 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3004
3005void
3006cede (...)
3007 CODE:
3008 CORO_EXECUTE_SLF_XS (slf_init_cede);
3009
3010void
3011cede_notself (...)
3012 CODE:
3013 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2070 3014
2071void 3015void
2072_set_current (SV *current) 3016_set_current (SV *current)
2073 PROTOTYPE: $ 3017 PROTOTYPE: $
2074 CODE: 3018 CODE:
2075 SvREFCNT_dec (SvRV (coro_current)); 3019 SvREFCNT_dec (SvRV (coro_current));
2076 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3020 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2077 3021
2078void 3022void
2079_set_readyhook (SV *hook) 3023_set_readyhook (SV *hook)
2080 PROTOTYPE: $ 3024 PROTOTYPE: $
2081 CODE: 3025 CODE:
2082 LOCK;
2083 SvREFCNT_dec (coro_readyhook); 3026 SvREFCNT_dec (coro_readyhook);
2084 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3027 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2085 UNLOCK;
2086 3028
2087int 3029int
2088prio (Coro::State coro, int newprio = 0) 3030prio (Coro::State coro, int newprio = 0)
3031 PROTOTYPE: $;$
2089 ALIAS: 3032 ALIAS:
2090 nice = 1 3033 nice = 1
2091 CODE: 3034 CODE:
2092{ 3035{
2093 RETVAL = coro->prio; 3036 RETVAL = coro->prio;
… …
2108 3051
2109SV * 3052SV *
2110ready (SV *self) 3053ready (SV *self)
2111 PROTOTYPE: $ 3054 PROTOTYPE: $
2112 CODE: 3055 CODE:
2113 RETVAL = boolSV (api_ready (self)); 3056 RETVAL = boolSV (api_ready (aTHX_ self));
2114 OUTPUT: 3057 OUTPUT:
2115 RETVAL 3058 RETVAL
2116 3059
2117int 3060int
2118nready (...) 3061nready (...)
… …
2120 CODE: 3063 CODE:
2121 RETVAL = coro_nready; 3064 RETVAL = coro_nready;
2122 OUTPUT: 3065 OUTPUT:
2123 RETVAL 3066 RETVAL
2124 3067
2125# for async_pool speedup
2126void 3068void
2127_pool_1 (SV *cb) 3069_pool_handler (...)
2128 CODE: 3070 CODE:
2129{ 3071 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2130 struct coro *coro = SvSTATE (coro_current);
2131 HV *hv = (HV *)SvRV (coro_current);
2132 AV *defav = GvAV (PL_defgv);
2133 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2134 AV *invoke_av;
2135 int i, len;
2136 3072
2137 if (!invoke) 3073void
3074async_pool (SV *cv, ...)
3075 PROTOTYPE: &@
3076 PPCODE:
3077{
3078 HV *hv = (HV *)av_pop (av_async_pool);
3079 AV *av = newAV ();
3080 SV *cb = ST (0);
3081 int i;
3082
3083 av_extend (av, items - 2);
3084 for (i = 1; i < items; ++i)
3085 av_push (av, SvREFCNT_inc_NN (ST (i)));
3086
3087 if ((SV *)hv == &PL_sv_undef)
2138 { 3088 {
2139 SV *old = PL_diehook; 3089 PUSHMARK (SP);
2140 PL_diehook = 0; 3090 EXTEND (SP, 2);
2141 SvREFCNT_dec (old); 3091 PUSHs (sv_Coro);
2142 croak ("\3async_pool terminate\2\n"); 3092 PUSHs ((SV *)cv_pool_handler);
3093 PUTBACK;
3094 call_sv ((SV *)cv_coro_new, G_SCALAR);
3095 SPAGAIN;
3096
3097 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2143 } 3098 }
2144 3099
2145 SvREFCNT_dec (coro->saved_deffh);
2146 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2147
2148 hv_store (hv, "desc", sizeof ("desc") - 1,
2149 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2150
2151 invoke_av = (AV *)SvRV (invoke);
2152 len = av_len (invoke_av);
2153
2154 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2155
2156 if (len > 0)
2157 { 3100 {
2158 av_fill (defav, len - 1); 3101 struct coro *coro = SvSTATE_hv (hv);
2159 for (i = 0; i < len; ++i) 3102
2160 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3103 assert (!coro->invoke_cb);
3104 assert (!coro->invoke_av);
3105 coro->invoke_cb = SvREFCNT_inc (cb);
3106 coro->invoke_av = av;
2161 } 3107 }
2162 3108
3109 api_ready (aTHX_ (SV *)hv);
3110
3111 if (GIMME_V != G_VOID)
3112 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3113 else
2163 SvREFCNT_dec (invoke); 3114 SvREFCNT_dec (hv);
2164} 3115}
2165 3116
2166void 3117SV *
2167_pool_2 (SV *cb) 3118rouse_cb ()
3119 PROTOTYPE:
2168 CODE: 3120 CODE:
2169{ 3121 RETVAL = coro_new_rouse_cb (aTHX);
2170 struct coro *coro = SvSTATE (coro_current);
2171
2172 sv_setsv (cb, &PL_sv_undef);
2173
2174 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2175 coro->saved_deffh = 0;
2176
2177 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2178 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2179 {
2180 SV *old = PL_diehook;
2181 PL_diehook = 0;
2182 SvREFCNT_dec (old);
2183 croak ("\3async_pool terminate\2\n");
2184 }
2185
2186 av_clear (GvAV (PL_defgv));
2187 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2188 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2189
2190 coro->prio = 0;
2191
2192 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2193 api_trace (coro_current, 0);
2194
2195 av_push (av_async_pool, newSVsv (coro_current));
2196}
2197
2198#if 0
2199
2200void
2201_generator_call (...)
2202 PROTOTYPE: @
2203 PPCODE:
2204 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2205 xxxx
2206 abort ();
2207
2208SV *
2209gensub (SV *sub, ...)
2210 PROTOTYPE: &;@
2211 CODE:
2212{
2213 struct coro *coro;
2214 MAGIC *mg;
2215 CV *xcv;
2216 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2217 int i;
2218
2219 CvGV (ncv) = CvGV (cv);
2220 CvFILE (ncv) = CvFILE (cv);
2221
2222 Newz (0, coro, 1, struct coro);
2223 coro->args = newAV ();
2224 coro->flags = CF_NEW;
2225
2226 av_extend (coro->args, items - 1);
2227 for (i = 1; i < items; i++)
2228 av_push (coro->args, newSVsv (ST (i)));
2229
2230 CvISXSUB_on (ncv);
2231 CvXSUBANY (ncv).any_ptr = (void *)coro;
2232
2233 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2234
2235 CvXSUB (ncv) = CvXSUB (xcv);
2236 CvANON_on (ncv);
2237
2238 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2239 RETVAL = newRV_noinc ((SV *)ncv);
2240}
2241 OUTPUT: 3122 OUTPUT:
2242 RETVAL 3123 RETVAL
2243 3124
2244#endif 3125void
3126rouse_wait (...)
3127 PROTOTYPE: ;$
3128 PPCODE:
3129 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2245 3130
2246 3131
3132MODULE = Coro::State PACKAGE = PerlIO::cede
3133
3134BOOT:
3135 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3136
3137
2247MODULE = Coro::State PACKAGE = Coro::AIO 3138MODULE = Coro::State PACKAGE = Coro::Semaphore
2248 3139
2249SV * 3140SV *
2250_get_state () 3141new (SV *klass, SV *count = 0)
2251 CODE: 3142 CODE:
2252{ 3143 RETVAL = sv_bless (
2253 struct io_state *data; 3144 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2254 3145 GvSTASH (CvGV (cv))
2255 RETVAL = newSV (sizeof (struct io_state)); 3146 );
2256 data = (struct io_state *)SvPVX (RETVAL);
2257 SvCUR_set (RETVAL, sizeof (struct io_state));
2258 SvPOK_only (RETVAL);
2259
2260 data->errorno = errno;
2261 data->laststype = PL_laststype;
2262 data->laststatval = PL_laststatval;
2263 data->statcache = PL_statcache;
2264}
2265 OUTPUT: 3147 OUTPUT:
2266 RETVAL 3148 RETVAL
2267 3149
3150# helper for Coro::Channel
3151SV *
3152_alloc (int count)
3153 CODE:
3154 RETVAL = coro_waitarray_new (aTHX_ count);
3155 OUTPUT:
3156 RETVAL
3157
3158SV *
3159count (SV *self)
3160 CODE:
3161 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3162 OUTPUT:
3163 RETVAL
3164
2268void 3165void
2269_set_state (char *data_) 3166up (SV *self, int adjust = 1)
2270 PROTOTYPE: $ 3167 ALIAS:
3168 adjust = 1
3169 CODE:
3170 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3171
3172void
3173down (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3176
3177void
3178wait (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3181
3182void
3183try (SV *self)
3184 PPCODE:
3185{
3186 AV *av = (AV *)SvRV (self);
3187 SV *count_sv = AvARRAY (av)[0];
3188 IV count = SvIVX (count_sv);
3189
3190 if (count > 0)
3191 {
3192 --count;
3193 SvIVX (count_sv) = count;
3194 XSRETURN_YES;
3195 }
3196 else
3197 XSRETURN_NO;
3198}
3199
3200void
3201waiters (SV *self)
3202 PPCODE:
3203{
3204 AV *av = (AV *)SvRV (self);
3205 int wcount = AvFILLp (av) + 1 - 1;
3206
3207 if (GIMME_V == G_SCALAR)
3208 XPUSHs (sv_2mortal (newSViv (wcount)));
3209 else
3210 {
3211 int i;
3212 EXTEND (SP, wcount);
3213 for (i = 1; i <= wcount; ++i)
3214 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3215 }
3216}
3217
3218MODULE = Coro::State PACKAGE = Coro::Signal
3219
3220SV *
3221new (SV *klass)
2271 CODE: 3222 CODE:
2272{ 3223 RETVAL = sv_bless (
2273 struct io_state *data = (void *)data_; 3224 coro_waitarray_new (aTHX_ 0),
3225 GvSTASH (CvGV (cv))
3226 );
3227 OUTPUT:
3228 RETVAL
2274 3229
2275 errno = data->errorno; 3230void
2276 PL_laststype = data->laststype; 3231wait (...)
2277 PL_laststatval = data->laststatval; 3232 CODE:
2278 PL_statcache = data->statcache; 3233 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3234
3235void
3236broadcast (SV *self)
3237 CODE:
3238{
3239 AV *av = (AV *)SvRV (self);
3240 coro_signal_wake (aTHX_ av, AvFILLp (av));
2279} 3241}
3242
3243void
3244send (SV *self)
3245 CODE:
3246{
3247 AV *av = (AV *)SvRV (self);
3248
3249 if (AvFILLp (av))
3250 coro_signal_wake (aTHX_ av, 1);
3251 else
3252 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3253}
3254
3255IV
3256awaited (SV *self)
3257 CODE:
3258 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3259 OUTPUT:
3260 RETVAL
2280 3261
2281 3262
2282MODULE = Coro::State PACKAGE = Coro::AnyEvent 3263MODULE = Coro::State PACKAGE = Coro::AnyEvent
2283 3264
2284BOOT: 3265BOOT:
2285 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3266 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2286 3267
2287SV * 3268void
2288_schedule (...) 3269_schedule (...)
2289 PROTOTYPE: @
2290 CODE: 3270 CODE:
2291{ 3271{
2292 static int incede; 3272 static int incede;
2293 3273
2294 api_cede_notself (); 3274 api_cede_notself (aTHX);
2295 3275
2296 ++incede; 3276 ++incede;
2297 while (coro_nready >= incede && api_cede ()) 3277 while (coro_nready >= incede && api_cede (aTHX))
2298 ; 3278 ;
2299 3279
2300 sv_setsv (sv_activity, &PL_sv_undef); 3280 sv_setsv (sv_activity, &PL_sv_undef);
2301 if (coro_nready >= incede) 3281 if (coro_nready >= incede)
2302 { 3282 {
2303 PUSHMARK (SP); 3283 PUSHMARK (SP);
2304 PUTBACK; 3284 PUTBACK;
2305 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3285 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2306 SPAGAIN;
2307 } 3286 }
2308 3287
2309 --incede; 3288 --incede;
2310} 3289}
2311 3290
2312 3291
2313MODULE = Coro::State PACKAGE = PerlIO::cede 3292MODULE = Coro::State PACKAGE = Coro::AIO
2314 3293
2315BOOT: 3294void
2316 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3295_register (char *target, char *proto, SV *req)
3296 CODE:
3297{
3298 CV *req_cv = coro_sv_2cv (aTHX_ req);
3299 /* newXSproto doesn't return the CV on 5.8 */
3300 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3301 sv_setpv ((SV *)slf_cv, proto);
3302 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3303}
3304

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