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Comparing Coro/Coro/State.xs (file contents):
Revision 1.233 by root, Fri May 9 22:04:37 2008 UTC vs.
Revision 1.317 by root, Thu Nov 20 06:28:52 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63 61
64#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr 63# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
67# endif 65# endif
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS 102#endif
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs 103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
96#endif 105#endif
97 106
98/* 5.8.7 */ 107/* 5.8.7 */
99#ifndef SvRV_set 108#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 123#endif
115 124
116/* 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
117 * 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
118#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
120 134
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 136
123#if __GNUC__ >= 3 137#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
127#else 141#else
128# define attribute(x) 142# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 143# define expect(expr,value) (expr)
144# define INLINE static
131#endif 145#endif
132 146
133#define expect_false(expr) expect ((expr) != 0, 0) 147#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
135 149
136#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
137 151
138#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
139 154
140#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 156# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 157static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 158# endif
159#endif
148 160
149/* helper storage struct for Coro::AIO */ 161static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 162
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;
158static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 171static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 174
165static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 177static SV *rv_diehook;
168static SV *rv_warnhook; 178static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
170 180
171/* async_pool helper stuff */ 181/* async_pool helper stuff */
172static SV *sv_pool_rss; 182static SV *sv_pool_rss;
173static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
174static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
175 189
176/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
177static SV *sv_activity; 191static SV *sv_activity;
178 192
179static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 203};
190 204
191/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 206typedef struct coro_cctx
207{
193 struct coro_cctx *next; 208 struct coro_cctx *next;
194 209
195 /* the stack */ 210 /* the stack */
196 void *sptr; 211 void *sptr;
197 size_t ssize; 212 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 215 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 216 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 217 JMPENV *top_env;
203 coro_context cctx; 218 coro_context cctx;
204 219
220 U32 gen;
205#if CORO_USE_VALGRIND 221#if CORO_USE_VALGRIND
206 int valgrind_id; 222 int valgrind_id;
207#endif 223#endif
208 unsigned char flags; 224 unsigned char flags;
209} coro_cctx; 225} coro_cctx;
… …
214 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 232};
217 233
218/* 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 */
219typedef struct { 235typedef struct
236{
220 SV *defsv; 237 SV *defsv;
221 AV *defav; 238 AV *defav;
222 SV *errsv; 239 SV *errsv;
223 SV *irsgv; 240 SV *irsgv;
224#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
228 245
229#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))
230 247
231/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
232struct coro { 249struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 251 coro_cctx *cctx;
235 252
236 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 255 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
239 257
258 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
243 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);
244 264
245 /* statistics */ 265 /* statistics */
246 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
247 267
248 /* coro process data */ 268 /* coro process data */
249 int prio; 269 int prio;
250 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
251 272
252 /* async_pool */ 273 /* async_pool */
253 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
254 277
255 /* linked list */ 278 /* linked list */
256 struct coro *next, *prev; 279 struct coro *next, *prev;
257}; 280};
258 281
259typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
260typedef 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 */
261 289
262/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
263 291
264#define PRIO_MAX 3 292#define PRIO_MAX 3
265#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 297#define PRIO_MIN -4
270 298
271/* for Coro.pm */ 299/* for Coro.pm */
272static SV *coro_current; 300static SV *coro_current;
273static SV *coro_readyhook; 301static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
277 306
278/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
279 308
280static SV * 309static SV *
281coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
303#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
304 /* 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 */
305 get_hv (name, create); 334 get_hv (name, create);
306#endif 335#endif
307 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);
308} 346}
309 347
310static AV * 348static AV *
311coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
312{ 350{
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 359 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 360#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 361 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 362 --AvFILLp (padlist);
325 363
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 364 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 365 av_store (newpadlist, 1, (SV *)newpad);
328 366
329 return newpadlist; 367 return newpadlist;
330} 368}
331 369
… …
361 399
362 /* casting is fun. */ 400 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 401 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 402 free_padlist (aTHX_ padlist);
365 403
404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
405
366 return 0; 406 return 0;
367} 407}
368 408
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
370#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
371 411
372static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 413 0, 0, 0, 0,
374 coro_cv_free 414 coro_cv_free
375}; 415};
376 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
377#define CORO_MAGIC(sv,type) \ 422#define CORO_MAGIC(sv, type) \
378 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
379 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
380 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \
382 : 0 425 : 0)
383 426
384#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)
385#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)
386 429
387static struct coro * 430INLINE struct coro *
388SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
389{ 432{
390 HV *stash; 433 HV *stash;
391 MAGIC *mg; 434 MAGIC *mg;
392 435
… …
407 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
409} 452}
410 453
411#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))
412 459
413/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
414static void 461static void
415get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
416{ 463{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 467 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 468 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 469 else
423 { 470 {
424#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 472 /* this is probably cleaner? but also slower! */
473 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
430#else 478#else
431 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
482 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
483 } 531 }
484 532
485 PUTBACK; 533 PUTBACK;
486 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
487} 538}
488 539
489static void 540static void
490save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
491{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
492 { 546 {
493 dSP; 547 dSP;
494 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
563 #undef VAR 617 #undef VAR
564 } 618 }
565} 619}
566 620
567/* 621/*
568 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
572 */ 626 */
573#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
574# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
575#else 629#else
576static void 630static void
577coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
578{ 632{
579 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
616 670
617/* 671/*
618 * destroy the stacks, the callchain etc... 672 * destroy the stacks, the callchain etc...
619 */ 673 */
620static void 674static void
621coro_destroy_stacks (pTHX) 675coro_destruct_stacks (pTHX)
622{ 676{
623 while (PL_curstackinfo->si_next) 677 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 678 PL_curstackinfo = PL_curstackinfo->si_next;
625 679
626 while (PL_curstackinfo) 680 while (PL_curstackinfo)
… …
642#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
643 Safefree (PL_retstack); 697 Safefree (PL_retstack);
644#endif 698#endif
645} 699}
646 700
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
647static size_t 710static size_t
648coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
649{ 712{
650 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
651 714
652 if (coro->mainstack) 715 if (coro->mainstack)
653 { 716 {
654 perl_slots tmp_slot;
655 perl_slots *slot;
656
657 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
658 { 718 {
659 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
660 720 CORO_RSS;
661 #define VAR(name,type) slot->name = PL_ ## name;
662 # include "state.h"
663 #undef VAR 721 #undef SYM
664 } 722 }
665 else 723 else
666 slot = coro->slot; 724 {
667 725 #define SYM(sym) coro->slot->sym
668 rss += sizeof (slot->curstackinfo); 726 CORO_RSS;
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 727 #undef SYM
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 728 }
671 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY);
675
676#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *);
678#endif
679 } 729 }
680 730
681 return rss; 731 return rss;
682} 732}
683 733
684/** coroutine stack handling ************************************************/ 734/** coroutine stack handling ************************************************/
685 735
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 736static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 737static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
738static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
739
740/* apparently < 5.8.8 */
741#ifndef MgPV_nolen_const
742#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
743 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
744 (const char*)(mg)->mg_ptr)
745#endif
688 746
689/* 747/*
690 * This overrides the default magic get method of %SIG elements. 748 * This overrides the default magic get method of %SIG elements.
691 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 749 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
692 * and instead of tryign to save and restore the hash elements, we just provide 750 * and instead of tryign to save and restore the hash elements, we just provide
… …
700{ 758{
701 const char *s = MgPV_nolen_const (mg); 759 const char *s = MgPV_nolen_const (mg);
702 760
703 if (*s == '_') 761 if (*s == '_')
704 { 762 {
705 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 763 SV **svp = 0;
706 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 764
765 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
766 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
767
768 if (svp)
769 {
770 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
771 return 0;
772 }
707 } 773 }
708 774
709 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 775 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
776}
777
778static int
779coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
780{
781 const char *s = MgPV_nolen_const (mg);
782
783 if (*s == '_')
784 {
785 SV **svp = 0;
786
787 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
788 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
789
790 if (svp)
791 {
792 SV *old = *svp;
793 *svp = 0;
794 SvREFCNT_dec (old);
795 return 0;
796 }
797 }
798
799 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
710} 800}
711 801
712static int 802static int
713coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 803coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
714{ 804{
… …
732 822
733 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
734} 824}
735 825
736static 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 */
737coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
738{ 843{
739 /* 844 /*
740 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
741 */ 846 */
… …
761 GvSV (PL_defgv) = newSV (0); 866 GvSV (PL_defgv) = newSV (0);
762 GvAV (PL_defgv) = coro->args; coro->args = 0; 867 GvAV (PL_defgv) = coro->args; coro->args = 0;
763 GvSV (PL_errgv) = newSV (0); 868 GvSV (PL_errgv) = newSV (0);
764 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);
765 PL_rs = newSVsv (GvSV (irsgv)); 870 PL_rs = newSVsv (GvSV (irsgv));
766 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 871 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
767 872
768 { 873 {
769 dSP; 874 dSP;
770 LOGOP myop; 875 UNOP myop;
771 876
772 Zero (&myop, 1, LOGOP); 877 Zero (&myop, 1, UNOP);
773 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
774 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
775 881
776 PUSHMARK (SP); 882 PUSHMARK (SP);
777 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
778 PUTBACK; 884 PUTBACK;
779 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
780 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
781 SPAGAIN;
782 } 887 }
783 888
784 /* 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
785 * 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.
786 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
787 * so we ENTER here for symmetry
788 */ 891 */
789 ENTER; 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
790} 893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
791 894
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
792static void 907static void
793coro_destroy (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
794{ 909{
795 if (!IN_DESTRUCT) 910 if (!IN_DESTRUCT)
796 { 911 {
797 /* restore all saved variables and stuff */ 912 /* restore all saved variables and stuff */
798 LEAVE_SCOPE (0); 913 LEAVE_SCOPE (0);
… …
818 933
819 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
820 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
821 936
822 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
823 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
824 941
825 coro_destroy_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
826} 943}
827 944
828static void 945INLINE void
829free_coro_mortal (pTHX) 946free_coro_mortal (pTHX)
830{ 947{
831 if (expect_true (coro_mortal)) 948 if (expect_true (coro_mortal))
832 { 949 {
833 SvREFCNT_dec (coro_mortal); 950 SvREFCNT_dec (coro_mortal);
… …
838static int 955static int
839runops_trace (pTHX) 956runops_trace (pTHX)
840{ 957{
841 COP *oldcop = 0; 958 COP *oldcop = 0;
842 int oldcxix = -2; 959 int oldcxix = -2;
843 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 */
844 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
845 962
846 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
847 { 964 {
848 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
867 : cx->blk_gimme == G_SCALAR ? bot + 1 984 : cx->blk_gimme == G_SCALAR ? bot + 1
868 : bot; 985 : bot;
869 986
870 av_extend (av, top - bot); 987 av_extend (av, top - bot);
871 while (bot < top) 988 while (bot < top)
872 av_push (av, SvREFCNT_inc (*bot++)); 989 av_push (av, SvREFCNT_inc_NN (*bot++));
873 990
874 PL_runops = RUNOPS_DEFAULT; 991 PL_runops = RUNOPS_DEFAULT;
875 ENTER; 992 ENTER;
876 SAVETMPS; 993 SAVETMPS;
877 EXTEND (SP, 3); 994 EXTEND (SP, 3);
… …
915 SAVETMPS; 1032 SAVETMPS;
916 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
917 PUSHMARK (SP); 1034 PUSHMARK (SP);
918 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
919 PUSHs (fullname); 1036 PUSHs (fullname);
920 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);
921 PUTBACK; 1038 PUTBACK;
922 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);
923 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);
924 SPAGAIN; 1041 SPAGAIN;
925 FREETMPS; 1042 FREETMPS;
… …
957 1074
958 TAINT_NOT; 1075 TAINT_NOT;
959 return 0; 1076 return 0;
960} 1077}
961 1078
962/* inject a fake call to Coro::State::_cctx_init into the execution */ 1079static struct coro_cctx *cctx_ssl_cctx;
963/* _cctx_init should be careful, as it could be called at almost any time */ 1080static struct CoroSLF cctx_ssl_frame;
964/* 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 */
965static void NOINLINE 1098static void NOINLINE
966cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
967{ 1100{
968 dSP;
969 LOGOP myop;
970
971 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
972 1102
973 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
974 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
975 1105
976 Zero (&myop, 1, LOGOP); 1106 /* we already must be executing an SLF op, there is no other valid way
977 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
978 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));
979 1110
980 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
981 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
982 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1113 cctx_ssl_frame = slf_frame;
983 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
984 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
985 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
986 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117}
987 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);
988} 1124}
989 1125
990/* 1126/*
991 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
992 */ 1128 */
993static void 1129static void
994cctx_run (void *arg) 1130cctx_run (void *arg)
995{ 1131{
1132#ifdef USE_ITHREADS
1133# if CORO_PTHREAD
1134 PERL_SET_CONTEXT (coro_thx);
1135# endif
1136#endif
1137 {
996 dTHX; 1138 dTHX;
997 1139
998 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1140 /* normally we would need to skip the entersub here */
999 UNLOCK; 1141 /* not doing so will re-execute it, which is exactly what we want */
1000
1001 /* we now skip the entersub that lead to transfer() */
1002 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1003 1143
1004 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1005 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1006 1146
1147 /* cctx_run is the alternative tail of transfer() */
1148 transfer_tail (aTHX);
1149
1007 /* 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 */
1008 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1009 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1010
1011 /* 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 /*
1012 * 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
1013 * 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)
1014 * 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
1015 * bootstrap-time "top" top_env, as we cannot restore the "main" 1162 * bootstrap-time "top" top_env, as we cannot restore the "main"
1016 * coroutine as Coro has no such concept 1163 * coroutine as Coro has no such concept
1017 */ 1164 */
1018 PL_top_env = main_top_env; 1165 PL_top_env = main_top_env;
1019 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 }
1020} 1168}
1021 1169
1022static coro_cctx * 1170static coro_cctx *
1023cctx_new () 1171cctx_new ()
1024{ 1172{
1025 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 ();
1026 void *stack_start; 1202 void *stack_start;
1027 size_t stack_size; 1203 size_t stack_size;
1028 1204
1029 ++cctx_count;
1030
1031 Newz (0, cctx, 1, coro_cctx);
1032
1033#if HAVE_MMAP 1205#if HAVE_MMAP
1034 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;
1035 /* mmap supposedly does allocate-on-write for us */ 1207 /* mmap supposedly does allocate-on-write for us */
1036 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);
1037 1209
1038 if (cctx->sptr != (void *)-1) 1210 if (cctx->sptr != (void *)-1)
1039 { 1211 {
1040# if CORO_STACKGUARD 1212 #if CORO_STACKGUARD
1041 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1213 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1042# endif 1214 #endif
1043 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1215 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1044 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1216 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1045 cctx->flags |= CC_MAPPED; 1217 cctx->flags |= CC_MAPPED;
1046 } 1218 }
1047 else 1219 else
1048#endif 1220#endif
1049 { 1221 {
1050 cctx->ssize = coro_stacksize * (long)sizeof (long); 1222 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1051 New (0, cctx->sptr, coro_stacksize, long); 1223 New (0, cctx->sptr, cctx_stacksize, long);
1052 1224
1053 if (!cctx->sptr) 1225 if (!cctx->sptr)
1054 { 1226 {
1055 perror ("FATAL: unable to allocate stack for coroutine"); 1227 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1056 _exit (EXIT_FAILURE); 1228 _exit (EXIT_FAILURE);
1057 } 1229 }
1058 1230
1059 stack_start = cctx->sptr; 1231 stack_start = cctx->sptr;
1060 stack_size = cctx->ssize; 1232 stack_size = cctx->ssize;
1061 } 1233 }
1062 1234
1063 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
1064 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);
1065 1240
1066 return cctx; 1241 return cctx;
1067} 1242}
1068 1243
… …
1071{ 1246{
1072 if (!cctx) 1247 if (!cctx)
1073 return; 1248 return;
1074 1249
1075 --cctx_count; 1250 --cctx_count;
1251 coro_destroy (&cctx->cctx);
1076 1252
1253 /* coro_transfer creates new, empty cctx's */
1254 if (cctx->sptr)
1255 {
1077#if CORO_USE_VALGRIND 1256 #if CORO_USE_VALGRIND
1078 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1257 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1079#endif 1258 #endif
1080 1259
1081#if HAVE_MMAP 1260#if HAVE_MMAP
1082 if (cctx->flags & CC_MAPPED) 1261 if (cctx->flags & CC_MAPPED)
1083 munmap (cctx->sptr, cctx->ssize); 1262 munmap (cctx->sptr, cctx->ssize);
1084 else 1263 else
1085#endif 1264#endif
1086 Safefree (cctx->sptr); 1265 Safefree (cctx->sptr);
1266 }
1087 1267
1088 Safefree (cctx); 1268 Safefree (cctx);
1089} 1269}
1090 1270
1091/* wether this cctx should be destructed */ 1271/* wether this cctx should be destructed */
1092#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))
1093 1273
1094static coro_cctx * 1274static coro_cctx *
1095cctx_get (pTHX) 1275cctx_get (pTHX)
1096{ 1276{
1097 while (expect_true (cctx_first)) 1277 while (expect_true (cctx_first))
… …
1104 return cctx; 1284 return cctx;
1105 1285
1106 cctx_destroy (cctx); 1286 cctx_destroy (cctx);
1107 } 1287 }
1108 1288
1109 return cctx_new (); 1289 return cctx_new_run ();
1110} 1290}
1111 1291
1112static void 1292static void
1113cctx_put (coro_cctx *cctx) 1293cctx_put (coro_cctx *cctx)
1114{ 1294{
1295 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1296
1115 /* free another cctx if overlimit */ 1297 /* free another cctx if overlimit */
1116 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1298 if (expect_false (cctx_idle >= cctx_max_idle))
1117 { 1299 {
1118 coro_cctx *first = cctx_first; 1300 coro_cctx *first = cctx_first;
1119 cctx_first = first->next; 1301 cctx_first = first->next;
1120 --cctx_idle; 1302 --cctx_idle;
1121 1303
… …
1130/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1131 1313
1132static void 1314static void
1133transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1134{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1135 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1136 { 1320 {
1137 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1138 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,");
1139 1323
1140 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1141 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,");
1142 1326
1143 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1144 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,");
1145 1329
1146#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1147 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1148 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,");
1149#endif 1333#endif
1150 } 1334 }
1151} 1335}
1152 1336
1153/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1154static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1155transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1156{ 1340{
1157 dSTACKLEVEL; 1341 dSTACKLEVEL;
1158 static volatile int has_throw;
1159 1342
1160 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
1161 if (expect_false (!next)) 1344 if (expect_false (!next))
1162 { 1345 {
1163 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1167 { 1350 {
1168 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
1169 1352
1170 if (expect_false (prev->flags & CF_NEW)) 1353 if (expect_false (prev->flags & CF_NEW))
1171 { 1354 {
1172 /* create a new empty context */ 1355 /* create a new empty/source context */
1173 Newz (0, prev->cctx, 1, coro_cctx); 1356 prev->cctx = cctx_new_empty ();
1174 prev->flags &= ~CF_NEW; 1357 prev->flags &= ~CF_NEW;
1175 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1176 } 1359 }
1177 1360
1178 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1179 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1180
1181 LOCK;
1182 1363
1183 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1184 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1185 1366
1186 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1193 else 1374 else
1194 load_perl (aTHX_ next); 1375 load_perl (aTHX_ next);
1195 1376
1196 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1197 1378
1198 /* possibly "free" the cctx */ 1379 /* possibly untie and reuse the cctx */
1199 if (expect_true ( 1380 if (expect_true (
1200 prev__cctx->idle_sp == STACKLEVEL 1381 prev__cctx->idle_sp == STACKLEVEL
1201 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1202 && !force_cctx 1383 && !force_cctx
1203 )) 1384 ))
1204 { 1385 {
1205 /* 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 */
1206 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));
1207 1388
1208 prev->cctx = 0; 1389 prev->cctx = 0;
1209 1390
1210 /* 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 */
1211 /* 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 */
… …
1218 1399
1219 ++next->usecount; 1400 ++next->usecount;
1220 1401
1221 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1222 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1223
1224 has_throw = !!next->throw;
1225 1404
1226 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1227 { 1406 {
1228 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1229 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1230 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1231 } 1410 }
1232 1411
1233 free_coro_mortal (aTHX); 1412 transfer_tail (aTHX);
1234 UNLOCK;
1235
1236 if (expect_false (has_throw))
1237 {
1238 struct coro *coro = SvSTATE (coro_current);
1239
1240 if (coro->throw)
1241 {
1242 SV *exception = coro->throw;
1243 coro->throw = 0;
1244 sv_setsv (ERRSV, exception);
1245 croak (0);
1246 }
1247 }
1248 } 1413 }
1249} 1414}
1250
1251struct transfer_args
1252{
1253 struct coro *prev, *next;
1254};
1255 1415
1256#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))
1257#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1417#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1258 1418
1259/** high level stuff ********************************************************/ 1419/** high level stuff ********************************************************/
… …
1261static int 1421static int
1262coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1263{ 1423{
1264 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1265 return 0; 1425 return 0;
1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1266 1429
1267 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1268 1431
1269 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1270 { 1433 {
1271 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1272 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1273 LOCK;
1274 --coro_nready; 1436 --coro_nready;
1275 UNLOCK;
1276 } 1437 }
1277 else 1438 else
1278 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 */
1279 1440
1280 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1281 { 1442 {
1282 struct coro temp; 1443 struct coro temp;
1283 1444
1284 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1285 croak ("FATAL: tried to destroy currently running coroutine");
1286 1446
1287 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1288 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1289 1449
1290 coro_destroy (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
1291 1451
1292 load_perl (aTHX_ &temp); 1452 load_perl (aTHX_ &temp);
1293 1453
1294 coro->slot = 0; 1454 coro->slot = 0;
1295 } 1455 }
1296 1456
1297 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1298 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1299 1461
1300 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1301 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1302 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1303 1465
… …
1341# define MGf_DUP 0 1503# define MGf_DUP 0
1342#endif 1504#endif
1343}; 1505};
1344 1506
1345static void 1507static void
1346prepare_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)
1347{ 1509{
1348 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1349 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1350 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1351} 1513}
1352 1514
1353static void 1515static void
1354api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1355{ 1517{
1356 dTHX;
1357 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1358 1519
1359 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1360 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1361} 1522}
1362 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
1363/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1364 1548
1365static void 1549INLINE void
1366coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1367{ 1551{
1368 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));
1369} 1553}
1370 1554
1371static SV * 1555INLINE SV *
1372coro_deq (pTHX) 1556coro_deq (pTHX)
1373{ 1557{
1374 int prio; 1558 int prio;
1375 1559
1376 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1379 1563
1380 return 0; 1564 return 0;
1381} 1565}
1382 1566
1383static int 1567static int
1384api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1385{ 1569{
1386 dTHX;
1387 struct coro *coro; 1570 struct coro *coro;
1388 SV *hook; 1571 SV *sv_hook;
1572 void (*xs_hook)(void);
1389 1573
1390 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
1391 coro_sv = SvRV (coro_sv); 1575 coro_sv = SvRV (coro_sv);
1392 1576
1393 coro = SvSTATE (coro_sv); 1577 coro = SvSTATE (coro_sv);
… …
1395 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1396 return 0; 1580 return 0;
1397 1581
1398 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1399 1583
1400 LOCK;
1401
1402 hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1403 1586
1404 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1587 coro_enq (aTHX_ coro);
1405 ++coro_nready; 1588 ++coro_nready;
1406 1589
1407 UNLOCK;
1408
1409 if (hook) 1590 if (sv_hook)
1410 { 1591 {
1411 dSP; 1592 dSP;
1412 1593
1413 ENTER; 1594 ENTER;
1414 SAVETMPS; 1595 SAVETMPS;
1415 1596
1416 PUSHMARK (SP); 1597 PUSHMARK (SP);
1417 PUTBACK; 1598 PUTBACK;
1418 call_sv (hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1419 SPAGAIN;
1420 1600
1421 FREETMPS; 1601 FREETMPS;
1422 LEAVE; 1602 LEAVE;
1423 } 1603 }
1424 1604
1605 if (xs_hook)
1606 xs_hook ();
1607
1425 return 1; 1608 return 1;
1426} 1609}
1427 1610
1428static int 1611static int
1429api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1430{ 1613{
1431 dTHX;
1432 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1433} 1615}
1434 1616
1617/* expects to own a reference to next->hv */
1618INLINE void
1619prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, (SV *)next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1435static void 1634static void
1436prepare_schedule (pTHX_ struct transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1437{ 1636{
1438 SV *prev_sv, *next_sv;
1439
1440 for (;;) 1637 for (;;)
1441 { 1638 {
1442 LOCK;
1443 next_sv = coro_deq (aTHX); 1639 SV *next_sv = coro_deq (aTHX);
1444 1640
1445 /* nothing to schedule: call the idle handler */
1446 if (expect_false (!next_sv)) 1641 if (expect_true (next_sv))
1447 { 1642 {
1643 struct coro *next = SvSTATE_hv (next_sv);
1644
1645 /* cannot transfer to destroyed coros, skip and look for next */
1646 if (expect_false (next->flags & CF_DESTROYED))
1647 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1648 else
1649 {
1650 next->flags &= ~CF_READY;
1651 --coro_nready;
1652
1653 return prepare_schedule_to (aTHX_ ta, next);
1654 }
1655 }
1656 else
1657 {
1658 /* nothing to schedule: call the idle handler */
1448 dSP; 1659 dSP;
1449 UNLOCK;
1450 1660
1451 ENTER; 1661 ENTER;
1452 SAVETMPS; 1662 SAVETMPS;
1453 1663
1454 PUSHMARK (SP); 1664 PUSHMARK (SP);
1455 PUTBACK; 1665 PUTBACK;
1456 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1666 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1457 SPAGAIN;
1458 1667
1459 FREETMPS; 1668 FREETMPS;
1460 LEAVE; 1669 LEAVE;
1461 continue;
1462 } 1670 }
1463
1464 ta->next = SvSTATE (next_sv);
1465
1466 /* cannot transfer to destroyed coros, skip and look for next */
1467 if (expect_false (ta->next->flags & CF_DESTROYED))
1468 {
1469 UNLOCK;
1470 SvREFCNT_dec (next_sv);
1471 /* coro_nready is already taken care of by destroy */
1472 continue;
1473 }
1474
1475 --coro_nready;
1476 UNLOCK;
1477 break;
1478 } 1671 }
1479
1480 /* free this only after the transfer */
1481 prev_sv = SvRV (coro_current);
1482 ta->prev = SvSTATE (prev_sv);
1483 TRANSFER_CHECK (*ta);
1484 assert (ta->next->flags & CF_READY);
1485 ta->next->flags &= ~CF_READY;
1486 SvRV_set (coro_current, next_sv);
1487
1488 LOCK;
1489 free_coro_mortal (aTHX);
1490 coro_mortal = prev_sv;
1491 UNLOCK;
1492} 1672}
1493 1673
1494static void 1674INLINE void
1495prepare_cede (pTHX_ struct transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1496{ 1676{
1497 api_ready (coro_current); 1677 api_ready (aTHX_ coro_current);
1498 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ ta);
1499} 1679}
1500 1680
1681INLINE void
1682prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1683{
1684 SV *prev = SvRV (coro_current);
1685
1686 if (coro_nready)
1687 {
1688 prepare_schedule (aTHX_ ta);
1689 api_ready (aTHX_ prev);
1690 }
1691 else
1692 prepare_nop (aTHX_ ta);
1693}
1694
1695static void
1696api_schedule (pTHX)
1697{
1698 struct coro_transfer_args ta;
1699
1700 prepare_schedule (aTHX_ &ta);
1701 TRANSFER (ta, 1);
1702}
1703
1704static void
1705api_schedule_to (pTHX_ SV *coro_sv)
1706{
1707 struct coro_transfer_args ta;
1708 struct coro *next = SvSTATE (coro_sv);
1709
1710 SvREFCNT_inc_NN (coro_sv);
1711 prepare_schedule_to (aTHX_ &ta, next);
1712}
1713
1501static int 1714static int
1502prepare_cede_notself (pTHX_ struct transfer_args *ta) 1715api_cede (pTHX)
1503{ 1716{
1504 if (coro_nready) 1717 struct coro_transfer_args ta;
1505 { 1718
1506 SV *prev = SvRV (coro_current);
1507 prepare_schedule (aTHX_ ta); 1719 prepare_cede (aTHX_ &ta);
1508 api_ready (prev); 1720
1721 if (expect_true (ta.prev != ta.next))
1722 {
1723 TRANSFER (ta, 1);
1509 return 1; 1724 return 1;
1510 } 1725 }
1511 else 1726 else
1512 return 0; 1727 return 0;
1513} 1728}
1514 1729
1515static void
1516api_schedule (void)
1517{
1518 dTHX;
1519 struct transfer_args ta;
1520
1521 prepare_schedule (aTHX_ &ta);
1522 TRANSFER (ta, 1);
1523}
1524
1525static int 1730static int
1526api_cede (void) 1731api_cede_notself (pTHX)
1527{ 1732{
1528 dTHX; 1733 if (coro_nready)
1734 {
1529 struct transfer_args ta; 1735 struct coro_transfer_args ta;
1530 1736
1531 prepare_cede (aTHX_ &ta); 1737 prepare_cede_notself (aTHX_ &ta);
1532
1533 if (expect_true (ta.prev != ta.next))
1534 {
1535 TRANSFER (ta, 1); 1738 TRANSFER (ta, 1);
1536 return 1; 1739 return 1;
1537 } 1740 }
1538 else 1741 else
1539 return 0; 1742 return 0;
1540} 1743}
1541 1744
1542static int 1745static void
1543api_cede_notself (void)
1544{
1545 dTHX;
1546 struct transfer_args ta;
1547
1548 if (prepare_cede_notself (aTHX_ &ta))
1549 {
1550 TRANSFER (ta, 1);
1551 return 1;
1552 }
1553 else
1554 return 0;
1555}
1556
1557static void
1558api_trace (SV *coro_sv, int flags) 1746api_trace (pTHX_ SV *coro_sv, int flags)
1559{ 1747{
1560 dTHX;
1561 struct coro *coro = SvSTATE (coro_sv); 1748 struct coro *coro = SvSTATE (coro_sv);
1562 1749
1563 if (flags & CC_TRACE) 1750 if (flags & CC_TRACE)
1564 { 1751 {
1565 if (!coro->cctx) 1752 if (!coro->cctx)
1566 coro->cctx = cctx_new (); 1753 coro->cctx = cctx_new_run ();
1567 else if (!(coro->cctx->flags & CC_TRACE)) 1754 else if (!(coro->cctx->flags & CC_TRACE))
1568 croak ("cannot enable tracing on coroutine with custom stack"); 1755 croak ("cannot enable tracing on coroutine with custom stack,");
1569 1756
1570 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1757 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1571 } 1758 }
1572 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1759 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1573 { 1760 {
… …
1578 else 1765 else
1579 coro->slot->runops = RUNOPS_DEFAULT; 1766 coro->slot->runops = RUNOPS_DEFAULT;
1580 } 1767 }
1581} 1768}
1582 1769
1770/*****************************************************************************/
1771/* async pool handler */
1772
1773static int
1774slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1775{
1776 HV *hv = (HV *)SvRV (coro_current);
1777 struct coro *coro = (struct coro *)frame->data;
1778
1779 if (!coro->invoke_cb)
1780 return 1; /* loop till we have invoke */
1781 else
1782 {
1783 hv_store (hv, "desc", sizeof ("desc") - 1,
1784 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1785
1786 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1787
1788 {
1789 dSP;
1790 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1791 PUTBACK;
1792 }
1793
1794 SvREFCNT_dec (GvAV (PL_defgv));
1795 GvAV (PL_defgv) = coro->invoke_av;
1796 coro->invoke_av = 0;
1797
1798 return 0;
1799 }
1800}
1801
1802static void
1803slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1804{
1805 HV *hv = (HV *)SvRV (coro_current);
1806 struct coro *coro = SvSTATE_hv ((SV *)hv);
1807
1808 if (expect_true (coro->saved_deffh))
1809 {
1810 /* subsequent iteration */
1811 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1812 coro->saved_deffh = 0;
1813
1814 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1815 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1816 {
1817 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1818 coro->invoke_av = newAV ();
1819
1820 frame->prepare = prepare_nop;
1821 }
1822 else
1823 {
1824 av_clear (GvAV (PL_defgv));
1825 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1826
1827 coro->prio = 0;
1828
1829 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1830 api_trace (aTHX_ coro_current, 0);
1831
1832 frame->prepare = prepare_schedule;
1833 av_push (av_async_pool, SvREFCNT_inc (hv));
1834 }
1835 }
1836 else
1837 {
1838 /* first iteration, simply fall through */
1839 frame->prepare = prepare_nop;
1840 }
1841
1842 frame->check = slf_check_pool_handler;
1843 frame->data = (void *)coro;
1844}
1845
1846/*****************************************************************************/
1847/* rouse callback */
1848
1849#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1850
1851static void
1852coro_rouse_callback (pTHX_ CV *cv)
1853{
1854 dXSARGS;
1855 SV *data = (SV *)GENSUB_ARG;
1856
1857 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1858 {
1859 /* first call, set args */
1860 AV *av = newAV ();
1861 SV *coro = SvRV (data);
1862
1863 SvRV_set (data, (SV *)av);
1864 api_ready (aTHX_ coro);
1865 SvREFCNT_dec (coro);
1866
1867 /* better take a full copy of the arguments */
1868 while (items--)
1869 av_store (av, items, newSVsv (ST (items)));
1870 }
1871
1872 XSRETURN_EMPTY;
1873}
1874
1875static int
1876slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1877{
1878 SV *data = (SV *)frame->data;
1879
1880 if (CORO_THROW)
1881 return 0;
1882
1883 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1884 return 1;
1885
1886 /* now push all results on the stack */
1887 {
1888 dSP;
1889 AV *av = (AV *)SvRV (data);
1890 int i;
1891
1892 EXTEND (SP, AvFILLp (av) + 1);
1893 for (i = 0; i <= AvFILLp (av); ++i)
1894 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1895
1896 /* we have stolen the elements, so ste length to zero and free */
1897 AvFILLp (av) = -1;
1898 av_undef (av);
1899
1900 PUTBACK;
1901 }
1902
1903 return 0;
1904}
1905
1906static void
1907slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1908{
1909 SV *cb;
1910
1911 if (items)
1912 cb = arg [0];
1913 else
1914 {
1915 struct coro *coro = SvSTATE_current;
1916
1917 if (!coro->rouse_cb)
1918 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1919
1920 cb = sv_2mortal (coro->rouse_cb);
1921 coro->rouse_cb = 0;
1922 }
1923
1924 if (!SvROK (cb)
1925 || SvTYPE (SvRV (cb)) != SVt_PVCV
1926 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1927 croak ("Coro::rouse_wait called with illegal callback argument,");
1928
1929 {
1930 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1931 SV *data = (SV *)GENSUB_ARG;
1932
1933 frame->data = (void *)data;
1934 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1935 frame->check = slf_check_rouse_wait;
1936 }
1937}
1938
1939static SV *
1940coro_new_rouse_cb (pTHX)
1941{
1942 HV *hv = (HV *)SvRV (coro_current);
1943 struct coro *coro = SvSTATE_hv (hv);
1944 SV *data = newRV_inc ((SV *)hv);
1945 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1946
1947 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1948 SvREFCNT_dec (data); /* magicext increases the refcount */
1949
1950 SvREFCNT_dec (coro->rouse_cb);
1951 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1952
1953 return cb;
1954}
1955
1956/*****************************************************************************/
1957/* schedule-like-function opcode (SLF) */
1958
1959static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1960static const CV *slf_cv;
1961static SV **slf_argv;
1962static int slf_argc, slf_arga; /* count, allocated */
1963static I32 slf_ax; /* top of stack, for restore */
1964
1965/* this restores the stack in the case we patched the entersub, to */
1966/* recreate the stack frame as perl will on following calls */
1967/* since entersub cleared the stack */
1968static OP *
1969pp_restore (pTHX)
1970{
1971 int i;
1972 SV **SP = PL_stack_base + slf_ax;
1973
1974 PUSHMARK (SP);
1975
1976 EXTEND (SP, slf_argc + 1);
1977
1978 for (i = 0; i < slf_argc; ++i)
1979 PUSHs (sv_2mortal (slf_argv [i]));
1980
1981 PUSHs ((SV *)CvGV (slf_cv));
1982
1983 RETURNOP (slf_restore.op_first);
1984}
1985
1986static void
1987slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1988{
1989 SV **arg = (SV **)slf_frame.data;
1990
1991 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1992}
1993
1994static void
1995slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 if (items != 2)
1998 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1999
2000 frame->prepare = slf_prepare_transfer;
2001 frame->check = slf_check_nop;
2002 frame->data = (void *)arg; /* let's hope it will stay valid */
2003}
2004
2005static void
2006slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2007{
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_nop;
2010}
2011
2012static void
2013slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2014{
2015 struct coro *next = (struct coro *)slf_frame.data;
2016
2017 SvREFCNT_inc_NN (next->hv);
2018 prepare_schedule_to (aTHX_ ta, next);
2019}
2020
2021static void
2022slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2023{
2024 if (!items)
2025 croak ("Coro::schedule_to expects a coroutine argument, caught");
2026
2027 frame->data = (void *)SvSTATE (arg [0]);
2028 frame->prepare = slf_prepare_schedule_to;
2029 frame->check = slf_check_nop;
2030}
2031
2032static void
2033slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2034{
2035 api_ready (aTHX_ SvRV (coro_current));
2036
2037 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2038}
2039
2040static void
2041slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 frame->prepare = prepare_cede;
2044 frame->check = slf_check_nop;
2045}
2046
2047static void
2048slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{
2050 frame->prepare = prepare_cede_notself;
2051 frame->check = slf_check_nop;
2052}
2053
2054/*
2055 * these not obviously related functions are all rolled into one
2056 * function to increase chances that they all will call transfer with the same
2057 * stack offset
2058 * SLF stands for "schedule-like-function".
2059 */
2060static OP *
2061pp_slf (pTHX)
2062{
2063 I32 checkmark; /* mark SP to see how many elements check has pushed */
2064
2065 /* set up the slf frame, unless it has already been set-up */
2066 /* the latter happens when a new coro has been started */
2067 /* or when a new cctx was attached to an existing coroutine */
2068 if (expect_true (!slf_frame.prepare))
2069 {
2070 /* first iteration */
2071 dSP;
2072 SV **arg = PL_stack_base + TOPMARK + 1;
2073 int items = SP - arg; /* args without function object */
2074 SV *gv = *sp;
2075
2076 /* do a quick consistency check on the "function" object, and if it isn't */
2077 /* for us, divert to the real entersub */
2078 if (SvTYPE (gv) != SVt_PVGV
2079 || !GvCV (gv)
2080 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2081 return PL_ppaddr[OP_ENTERSUB](aTHX);
2082
2083 if (!(PL_op->op_flags & OPf_STACKED))
2084 {
2085 /* ampersand-form of call, use @_ instead of stack */
2086 AV *av = GvAV (PL_defgv);
2087 arg = AvARRAY (av);
2088 items = AvFILLp (av) + 1;
2089 }
2090
2091 /* now call the init function, which needs to set up slf_frame */
2092 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2093 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2094
2095 /* pop args */
2096 SP = PL_stack_base + POPMARK;
2097
2098 PUTBACK;
2099 }
2100
2101 /* now that we have a slf_frame, interpret it! */
2102 /* we use a callback system not to make the code needlessly */
2103 /* complicated, but so we can run multiple perl coros from one cctx */
2104
2105 do
2106 {
2107 struct coro_transfer_args ta;
2108
2109 slf_frame.prepare (aTHX_ &ta);
2110 TRANSFER (ta, 0);
2111
2112 checkmark = PL_stack_sp - PL_stack_base;
2113 }
2114 while (slf_frame.check (aTHX_ &slf_frame));
2115
2116 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2117
2118 /* exception handling */
2119 if (expect_false (CORO_THROW))
2120 {
2121 SV *exception = sv_2mortal (CORO_THROW);
2122
2123 CORO_THROW = 0;
2124 sv_setsv (ERRSV, exception);
2125 croak (0);
2126 }
2127
2128 /* return value handling - mostly like entersub */
2129 /* make sure we put something on the stack in scalar context */
2130 if (GIMME_V == G_SCALAR)
2131 {
2132 dSP;
2133 SV **bot = PL_stack_base + checkmark;
2134
2135 if (sp == bot) /* too few, push undef */
2136 bot [1] = &PL_sv_undef;
2137 else if (sp != bot + 1) /* too many, take last one */
2138 bot [1] = *sp;
2139
2140 SP = bot + 1;
2141
2142 PUTBACK;
2143 }
2144
2145 return NORMAL;
2146}
2147
2148static void
2149api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2150{
2151 int i;
2152 SV **arg = PL_stack_base + ax;
2153 int items = PL_stack_sp - arg + 1;
2154
2155 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2156
2157 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2158 && PL_op->op_ppaddr != pp_slf)
2159 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2160
2161 CvFLAGS (cv) |= CVf_SLF;
2162 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2163 slf_cv = cv;
2164
2165 /* we patch the op, and then re-run the whole call */
2166 /* we have to put the same argument on the stack for this to work */
2167 /* and this will be done by pp_restore */
2168 slf_restore.op_next = (OP *)&slf_restore;
2169 slf_restore.op_type = OP_CUSTOM;
2170 slf_restore.op_ppaddr = pp_restore;
2171 slf_restore.op_first = PL_op;
2172
2173 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2174
2175 if (PL_op->op_flags & OPf_STACKED)
2176 {
2177 if (items > slf_arga)
2178 {
2179 slf_arga = items;
2180 free (slf_argv);
2181 slf_argv = malloc (slf_arga * sizeof (SV *));
2182 }
2183
2184 slf_argc = items;
2185
2186 for (i = 0; i < items; ++i)
2187 slf_argv [i] = SvREFCNT_inc (arg [i]);
2188 }
2189 else
2190 slf_argc = 0;
2191
2192 PL_op->op_ppaddr = pp_slf;
2193 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2194
2195 PL_op = (OP *)&slf_restore;
2196}
2197
2198/*****************************************************************************/
2199/* PerlIO::cede */
2200
2201typedef struct
2202{
2203 PerlIOBuf base;
2204 NV next, every;
2205} PerlIOCede;
2206
2207static IV
2208PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2209{
2210 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2211
2212 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2213 self->next = nvtime () + self->every;
2214
2215 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2216}
2217
2218static SV *
2219PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2220{
2221 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2222
2223 return newSVnv (self->every);
2224}
2225
2226static IV
2227PerlIOCede_flush (pTHX_ PerlIO *f)
2228{
2229 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2230 double now = nvtime ();
2231
2232 if (now >= self->next)
2233 {
2234 api_cede (aTHX);
2235 self->next = now + self->every;
2236 }
2237
2238 return PerlIOBuf_flush (aTHX_ f);
2239}
2240
2241static PerlIO_funcs PerlIO_cede =
2242{
2243 sizeof(PerlIO_funcs),
2244 "cede",
2245 sizeof(PerlIOCede),
2246 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2247 PerlIOCede_pushed,
2248 PerlIOBuf_popped,
2249 PerlIOBuf_open,
2250 PerlIOBase_binmode,
2251 PerlIOCede_getarg,
2252 PerlIOBase_fileno,
2253 PerlIOBuf_dup,
2254 PerlIOBuf_read,
2255 PerlIOBuf_unread,
2256 PerlIOBuf_write,
2257 PerlIOBuf_seek,
2258 PerlIOBuf_tell,
2259 PerlIOBuf_close,
2260 PerlIOCede_flush,
2261 PerlIOBuf_fill,
2262 PerlIOBase_eof,
2263 PerlIOBase_error,
2264 PerlIOBase_clearerr,
2265 PerlIOBase_setlinebuf,
2266 PerlIOBuf_get_base,
2267 PerlIOBuf_bufsiz,
2268 PerlIOBuf_get_ptr,
2269 PerlIOBuf_get_cnt,
2270 PerlIOBuf_set_ptrcnt,
2271};
2272
2273/*****************************************************************************/
2274/* Coro::Semaphore & Coro::Signal */
2275
2276static SV *
2277coro_waitarray_new (pTHX_ int count)
2278{
2279 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2280 AV *av = newAV ();
2281 SV **ary;
2282
2283 /* unfortunately, building manually saves memory */
2284 Newx (ary, 2, SV *);
2285 AvALLOC (av) = ary;
2286 /*AvARRAY (av) = ary;*/
2287 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2288 AvMAX (av) = 1;
2289 AvFILLp (av) = 0;
2290 ary [0] = newSViv (count);
2291
2292 return newRV_noinc ((SV *)av);
2293}
2294
2295/* semaphore */
2296
2297static void
2298coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2299{
2300 SV *count_sv = AvARRAY (av)[0];
2301 IV count = SvIVX (count_sv);
2302
2303 count += adjust;
2304 SvIVX (count_sv) = count;
2305
2306 /* now wake up as many waiters as are expected to lock */
2307 while (count > 0 && AvFILLp (av) > 0)
2308 {
2309 SV *cb;
2310
2311 /* swap first two elements so we can shift a waiter */
2312 AvARRAY (av)[0] = AvARRAY (av)[1];
2313 AvARRAY (av)[1] = count_sv;
2314 cb = av_shift (av);
2315
2316 if (SvOBJECT (cb))
2317 {
2318 api_ready (aTHX_ cb);
2319 --count;
2320 }
2321 else if (SvTYPE (cb) == SVt_PVCV)
2322 {
2323 dSP;
2324 PUSHMARK (SP);
2325 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2326 PUTBACK;
2327 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2328 }
2329
2330 SvREFCNT_dec (cb);
2331 }
2332}
2333
2334static void
2335coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2336{
2337 /* call $sem->adjust (0) to possibly wake up some other waiters */
2338 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2339}
2340
2341static int
2342slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2343{
2344 AV *av = (AV *)frame->data;
2345 SV *count_sv = AvARRAY (av)[0];
2346
2347 /* if we are about to throw, don't actually acquire the lock, just throw */
2348 if (CORO_THROW)
2349 return 0;
2350 else if (SvIVX (count_sv) > 0)
2351 {
2352 SvSTATE_current->on_destroy = 0;
2353
2354 if (acquire)
2355 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2356 else
2357 coro_semaphore_adjust (aTHX_ av, 0);
2358
2359 return 0;
2360 }
2361 else
2362 {
2363 int i;
2364 /* if we were woken up but can't down, we look through the whole */
2365 /* waiters list and only add us if we aren't in there already */
2366 /* this avoids some degenerate memory usage cases */
2367
2368 for (i = 1; i <= AvFILLp (av); ++i)
2369 if (AvARRAY (av)[i] == SvRV (coro_current))
2370 return 1;
2371
2372 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2373 return 1;
2374 }
2375}
2376
2377static int
2378slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2379{
2380 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2381}
2382
2383static int
2384slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2385{
2386 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2387}
2388
2389static void
2390slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2391{
2392 AV *av = (AV *)SvRV (arg [0]);
2393
2394 if (SvIVX (AvARRAY (av)[0]) > 0)
2395 {
2396 frame->data = (void *)av;
2397 frame->prepare = prepare_nop;
2398 }
2399 else
2400 {
2401 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2402
2403 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2404 frame->prepare = prepare_schedule;
2405
2406 /* to avoid race conditions when a woken-up coro gets terminated */
2407 /* we arrange for a temporary on_destroy that calls adjust (0) */
2408 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2409 }
2410}
2411
2412static void
2413slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2414{
2415 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2416 frame->check = slf_check_semaphore_down;
2417}
2418
2419static void
2420slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2421{
2422 if (items >= 2)
2423 {
2424 /* callback form */
2425 AV *av = (AV *)SvRV (arg [0]);
2426 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2427
2428 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2429
2430 if (SvIVX (AvARRAY (av)[0]) > 0)
2431 coro_semaphore_adjust (aTHX_ av, 0);
2432
2433 frame->prepare = prepare_nop;
2434 frame->check = slf_check_nop;
2435 }
2436 else
2437 {
2438 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2439 frame->check = slf_check_semaphore_wait;
2440 }
2441}
2442
2443/* signal */
2444
2445static void
2446coro_signal_wake (pTHX_ AV *av, int count)
2447{
2448 SvIVX (AvARRAY (av)[0]) = 0;
2449
2450 /* now signal count waiters */
2451 while (count > 0 && AvFILLp (av) > 0)
2452 {
2453 SV *cb;
2454
2455 /* swap first two elements so we can shift a waiter */
2456 cb = AvARRAY (av)[0];
2457 AvARRAY (av)[0] = AvARRAY (av)[1];
2458 AvARRAY (av)[1] = cb;
2459
2460 cb = av_shift (av);
2461
2462 api_ready (aTHX_ cb);
2463 sv_setiv (cb, 0); /* signal waiter */
2464 SvREFCNT_dec (cb);
2465
2466 --count;
2467 }
2468}
2469
2470static int
2471slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 /* if we are about to throw, also stop waiting */
2474 return SvROK ((SV *)frame->data) && !CORO_THROW;
2475}
2476
2477static void
2478slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2479{
2480 AV *av = (AV *)SvRV (arg [0]);
2481
2482 if (SvIVX (AvARRAY (av)[0]))
2483 {
2484 SvIVX (AvARRAY (av)[0]) = 0;
2485 frame->prepare = prepare_nop;
2486 frame->check = slf_check_nop;
2487 }
2488 else
2489 {
2490 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2491
2492 av_push (av, waiter);
2493
2494 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2495 frame->prepare = prepare_schedule;
2496 frame->check = slf_check_signal_wait;
2497 }
2498}
2499
2500/*****************************************************************************/
2501/* Coro::AIO */
2502
2503#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2504
2505/* helper storage struct */
2506struct io_state
2507{
2508 int errorno;
2509 I32 laststype; /* U16 in 5.10.0 */
2510 int laststatval;
2511 Stat_t statcache;
2512};
2513
2514static void
2515coro_aio_callback (pTHX_ CV *cv)
2516{
2517 dXSARGS;
2518 AV *state = (AV *)GENSUB_ARG;
2519 SV *coro = av_pop (state);
2520 SV *data_sv = newSV (sizeof (struct io_state));
2521
2522 av_extend (state, items - 1);
2523
2524 sv_upgrade (data_sv, SVt_PV);
2525 SvCUR_set (data_sv, sizeof (struct io_state));
2526 SvPOK_only (data_sv);
2527
2528 {
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 data->errorno = errno;
2532 data->laststype = PL_laststype;
2533 data->laststatval = PL_laststatval;
2534 data->statcache = PL_statcache;
2535 }
2536
2537 /* now build the result vector out of all the parameters and the data_sv */
2538 {
2539 int i;
2540
2541 for (i = 0; i < items; ++i)
2542 av_push (state, SvREFCNT_inc_NN (ST (i)));
2543 }
2544
2545 av_push (state, data_sv);
2546
2547 api_ready (aTHX_ coro);
2548 SvREFCNT_dec (coro);
2549 SvREFCNT_dec ((AV *)state);
2550}
2551
2552static int
2553slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2554{
2555 AV *state = (AV *)frame->data;
2556
2557 /* if we are about to throw, return early */
2558 /* this does not cancel the aio request, but at least */
2559 /* it quickly returns */
2560 if (CORO_THROW)
2561 return 0;
2562
2563 /* one element that is an RV? repeat! */
2564 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2565 return 1;
2566
2567 /* restore status */
2568 {
2569 SV *data_sv = av_pop (state);
2570 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2571
2572 errno = data->errorno;
2573 PL_laststype = data->laststype;
2574 PL_laststatval = data->laststatval;
2575 PL_statcache = data->statcache;
2576
2577 SvREFCNT_dec (data_sv);
2578 }
2579
2580 /* push result values */
2581 {
2582 dSP;
2583 int i;
2584
2585 EXTEND (SP, AvFILLp (state) + 1);
2586 for (i = 0; i <= AvFILLp (state); ++i)
2587 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2588
2589 PUTBACK;
2590 }
2591
2592 return 0;
2593}
2594
2595static void
2596slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2597{
2598 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2599 SV *coro_hv = SvRV (coro_current);
2600 struct coro *coro = SvSTATE_hv (coro_hv);
2601
2602 /* put our coroutine id on the state arg */
2603 av_push (state, SvREFCNT_inc_NN (coro_hv));
2604
2605 /* first see whether we have a non-zero priority and set it as AIO prio */
2606 if (coro->prio)
2607 {
2608 dSP;
2609
2610 static SV *prio_cv;
2611 static SV *prio_sv;
2612
2613 if (expect_false (!prio_cv))
2614 {
2615 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2616 prio_sv = newSViv (0);
2617 }
2618
2619 PUSHMARK (SP);
2620 sv_setiv (prio_sv, coro->prio);
2621 XPUSHs (prio_sv);
2622
2623 PUTBACK;
2624 call_sv (prio_cv, G_VOID | G_DISCARD);
2625 }
2626
2627 /* now call the original request */
2628 {
2629 dSP;
2630 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2631 int i;
2632
2633 PUSHMARK (SP);
2634
2635 /* first push all args to the stack */
2636 EXTEND (SP, items + 1);
2637
2638 for (i = 0; i < items; ++i)
2639 PUSHs (arg [i]);
2640
2641 /* now push the callback closure */
2642 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2643
2644 /* now call the AIO function - we assume our request is uncancelable */
2645 PUTBACK;
2646 call_sv ((SV *)req, G_VOID | G_DISCARD);
2647 }
2648
2649 /* now that the requets is going, we loop toll we have a result */
2650 frame->data = (void *)state;
2651 frame->prepare = prepare_schedule;
2652 frame->check = slf_check_aio_req;
2653}
2654
2655static void
2656coro_aio_req_xs (pTHX_ CV *cv)
2657{
2658 dXSARGS;
2659
2660 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2661
2662 XSRETURN_EMPTY;
2663}
2664
2665/*****************************************************************************/
2666
1583MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2667MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1584 2668
1585PROTOTYPES: DISABLE 2669PROTOTYPES: DISABLE
1586 2670
1587BOOT: 2671BOOT:
1588{ 2672{
1589#ifdef USE_ITHREADS 2673#ifdef USE_ITHREADS
1590 MUTEX_INIT (&coro_mutex); 2674# if CORO_PTHREAD
2675 coro_thx = PERL_GET_CONTEXT;
2676# endif
1591#endif 2677#endif
1592 BOOT_PAGESIZE; 2678 BOOT_PAGESIZE;
1593 2679
1594 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2680 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1595 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2681 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1596 2682
1597 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2683 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1598 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2684 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1599 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2685 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1600 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1601 2686
1602 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2687 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1603 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2688 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1604 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2689 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1605 2690
… …
1614 main_top_env = PL_top_env; 2699 main_top_env = PL_top_env;
1615 2700
1616 while (main_top_env->je_prev) 2701 while (main_top_env->je_prev)
1617 main_top_env = main_top_env->je_prev; 2702 main_top_env = main_top_env->je_prev;
1618 2703
2704 {
2705 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2706
2707 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2708 hv_store_ent (PL_custom_op_names, slf,
2709 newSVpv ("coro_slf", 0), 0);
2710
2711 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2712 hv_store_ent (PL_custom_op_descs, slf,
2713 newSVpv ("coro schedule like function", 0), 0);
2714 }
2715
1619 coroapi.ver = CORO_API_VERSION; 2716 coroapi.ver = CORO_API_VERSION;
1620 coroapi.rev = CORO_API_REVISION; 2717 coroapi.rev = CORO_API_REVISION;
2718
1621 coroapi.transfer = api_transfer; 2719 coroapi.transfer = api_transfer;
2720
2721 coroapi.sv_state = SvSTATE_;
2722 coroapi.execute_slf = api_execute_slf;
2723 coroapi.prepare_nop = prepare_nop;
2724 coroapi.prepare_schedule = prepare_schedule;
2725 coroapi.prepare_cede = prepare_cede;
2726 coroapi.prepare_cede_notself = prepare_cede_notself;
2727
2728 {
2729 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2730
2731 if (!svp) croak ("Time::HiRes is required");
2732 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2733
2734 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2735 }
1622 2736
1623 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2737 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1624} 2738}
1625 2739
1626SV * 2740SV *
1627new (char *klass, ...) 2741new (char *klass, ...)
2742 ALIAS:
2743 Coro::new = 1
1628 CODE: 2744 CODE:
1629{ 2745{
1630 struct coro *coro; 2746 struct coro *coro;
1631 MAGIC *mg; 2747 MAGIC *mg;
1632 HV *hv; 2748 HV *hv;
2749 CV *cb;
1633 int i; 2750 int i;
2751
2752 if (items > 1)
2753 {
2754 cb = coro_sv_2cv (aTHX_ ST (1));
2755
2756 if (!ix)
2757 {
2758 if (CvISXSUB (cb))
2759 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2760
2761 if (!CvROOT (cb))
2762 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2763 }
2764 }
1634 2765
1635 Newz (0, coro, 1, struct coro); 2766 Newz (0, coro, 1, struct coro);
1636 coro->args = newAV (); 2767 coro->args = newAV ();
1637 coro->flags = CF_NEW; 2768 coro->flags = CF_NEW;
1638 2769
… …
1643 coro->hv = hv = newHV (); 2774 coro->hv = hv = newHV ();
1644 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2775 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1645 mg->mg_flags |= MGf_DUP; 2776 mg->mg_flags |= MGf_DUP;
1646 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2777 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1647 2778
2779 if (items > 1)
2780 {
1648 av_extend (coro->args, items - 1); 2781 av_extend (coro->args, items - 1 + ix - 1);
2782
2783 if (ix)
2784 {
2785 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2786 cb = cv_coro_run;
2787 }
2788
2789 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2790
1649 for (i = 1; i < items; i++) 2791 for (i = 2; i < items; i++)
1650 av_push (coro->args, newSVsv (ST (i))); 2792 av_push (coro->args, newSVsv (ST (i)));
2793 }
1651} 2794}
1652 OUTPUT: 2795 OUTPUT:
1653 RETVAL 2796 RETVAL
1654 2797
1655# these not obviously related functions are all rolled into the same xs
1656# function to increase chances that they all will call transfer with the same
1657# stack offset
1658void 2798void
1659_set_stacklevel (...) 2799transfer (...)
1660 ALIAS: 2800 PROTOTYPE: $$
1661 Coro::State::transfer = 1 2801 CODE:
1662 Coro::schedule = 2 2802 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1663 Coro::cede = 3
1664 Coro::cede_notself = 4
1665 CODE:
1666{
1667 struct transfer_args ta;
1668
1669 PUTBACK;
1670 switch (ix)
1671 {
1672 case 0:
1673 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1674 ta.next = 0;
1675 break;
1676
1677 case 1:
1678 if (items != 2)
1679 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1680
1681 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1682 break;
1683
1684 case 2:
1685 prepare_schedule (aTHX_ &ta);
1686 break;
1687
1688 case 3:
1689 prepare_cede (aTHX_ &ta);
1690 break;
1691
1692 case 4:
1693 if (!prepare_cede_notself (aTHX_ &ta))
1694 XSRETURN_EMPTY;
1695
1696 break;
1697 }
1698 SPAGAIN;
1699
1700 BARRIER;
1701 PUTBACK;
1702 TRANSFER (ta, 0);
1703 SPAGAIN; /* might be the sp of a different coroutine now */
1704 /* be extra careful not to ever do anything after TRANSFER */
1705}
1706 2803
1707bool 2804bool
1708_destroy (SV *coro_sv) 2805_destroy (SV *coro_sv)
1709 CODE: 2806 CODE:
1710 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2807 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1717 CODE: 2814 CODE:
1718 _exit (code); 2815 _exit (code);
1719 2816
1720int 2817int
1721cctx_stacksize (int new_stacksize = 0) 2818cctx_stacksize (int new_stacksize = 0)
2819 PROTOTYPE: ;$
1722 CODE: 2820 CODE:
1723 RETVAL = coro_stacksize; 2821 RETVAL = cctx_stacksize;
1724 if (new_stacksize) 2822 if (new_stacksize)
2823 {
1725 coro_stacksize = new_stacksize; 2824 cctx_stacksize = new_stacksize;
2825 ++cctx_gen;
2826 }
1726 OUTPUT: 2827 OUTPUT:
1727 RETVAL 2828 RETVAL
1728 2829
1729int 2830int
2831cctx_max_idle (int max_idle = 0)
2832 PROTOTYPE: ;$
2833 CODE:
2834 RETVAL = cctx_max_idle;
2835 if (max_idle > 1)
2836 cctx_max_idle = max_idle;
2837 OUTPUT:
2838 RETVAL
2839
2840int
1730cctx_count () 2841cctx_count ()
2842 PROTOTYPE:
1731 CODE: 2843 CODE:
1732 RETVAL = cctx_count; 2844 RETVAL = cctx_count;
1733 OUTPUT: 2845 OUTPUT:
1734 RETVAL 2846 RETVAL
1735 2847
1736int 2848int
1737cctx_idle () 2849cctx_idle ()
2850 PROTOTYPE:
1738 CODE: 2851 CODE:
1739 RETVAL = cctx_idle; 2852 RETVAL = cctx_idle;
1740 OUTPUT: 2853 OUTPUT:
1741 RETVAL 2854 RETVAL
1742 2855
1743void 2856void
1744list () 2857list ()
2858 PROTOTYPE:
1745 PPCODE: 2859 PPCODE:
1746{ 2860{
1747 struct coro *coro; 2861 struct coro *coro;
1748 for (coro = coro_first; coro; coro = coro->next) 2862 for (coro = coro_first; coro; coro = coro->next)
1749 if (coro->hv) 2863 if (coro->hv)
… …
1754call (Coro::State coro, SV *coderef) 2868call (Coro::State coro, SV *coderef)
1755 ALIAS: 2869 ALIAS:
1756 eval = 1 2870 eval = 1
1757 CODE: 2871 CODE:
1758{ 2872{
1759 if (coro->mainstack) 2873 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1760 { 2874 {
1761 struct coro temp; 2875 struct coro temp;
1762 2876
1763 if (!(coro->flags & CF_RUNNING)) 2877 if (!(coro->flags & CF_RUNNING))
1764 { 2878 {
… …
1808 RETVAL = boolSV (coro->flags & ix); 2922 RETVAL = boolSV (coro->flags & ix);
1809 OUTPUT: 2923 OUTPUT:
1810 RETVAL 2924 RETVAL
1811 2925
1812void 2926void
2927throw (Coro::State self, SV *throw = &PL_sv_undef)
2928 PROTOTYPE: $;$
2929 CODE:
2930{
2931 struct coro *current = SvSTATE_current;
2932 SV **throwp = self == current ? &CORO_THROW : &self->except;
2933 SvREFCNT_dec (*throwp);
2934 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2935}
2936
2937void
1813api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2938api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2939 PROTOTYPE: $;$
2940 C_ARGS: aTHX_ coro, flags
1814 2941
1815SV * 2942SV *
1816has_stack (Coro::State coro) 2943has_cctx (Coro::State coro)
1817 PROTOTYPE: $ 2944 PROTOTYPE: $
1818 CODE: 2945 CODE:
1819 RETVAL = boolSV (!!coro->cctx); 2946 RETVAL = boolSV (!!coro->cctx);
1820 OUTPUT: 2947 OUTPUT:
1821 RETVAL 2948 RETVAL
… …
1826 CODE: 2953 CODE:
1827 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2954 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1828 OUTPUT: 2955 OUTPUT:
1829 RETVAL 2956 RETVAL
1830 2957
1831IV 2958UV
1832rss (Coro::State coro) 2959rss (Coro::State coro)
1833 PROTOTYPE: $ 2960 PROTOTYPE: $
1834 ALIAS: 2961 ALIAS:
1835 usecount = 1 2962 usecount = 1
1836 CODE: 2963 CODE:
… …
1842 OUTPUT: 2969 OUTPUT:
1843 RETVAL 2970 RETVAL
1844 2971
1845void 2972void
1846force_cctx () 2973force_cctx ()
2974 PROTOTYPE:
1847 CODE: 2975 CODE:
1848 struct coro *coro = SvSTATE (coro_current);
1849 coro->cctx->idle_sp = 0; 2976 SvSTATE_current->cctx->idle_sp = 0;
2977
2978void
2979swap_defsv (Coro::State self)
2980 PROTOTYPE: $
2981 ALIAS:
2982 swap_defav = 1
2983 CODE:
2984 if (!self->slot)
2985 croak ("cannot swap state with coroutine that has no saved state,");
2986 else
2987 {
2988 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2989 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2990
2991 SV *tmp = *src; *src = *dst; *dst = tmp;
2992 }
2993
1850 2994
1851MODULE = Coro::State PACKAGE = Coro 2995MODULE = Coro::State PACKAGE = Coro
1852 2996
1853BOOT: 2997BOOT:
1854{ 2998{
1855 int i; 2999 int i;
1856 3000
1857 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3001 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1858 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3002 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1859 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3003 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1860 3004 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3005 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1861 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3006 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1862 SvREADONLY_on (coro_current); 3007
3008 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3009 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3010 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3011 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1863 3012
1864 coro_stash = gv_stashpv ("Coro", TRUE); 3013 coro_stash = gv_stashpv ("Coro", TRUE);
1865 3014
1866 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3015 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1867 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3016 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1872 3021
1873 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3022 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1874 coro_ready[i] = newAV (); 3023 coro_ready[i] = newAV ();
1875 3024
1876 { 3025 {
1877 SV *sv = perl_get_sv ("Coro::API", TRUE); 3026 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1878 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1879 3027
1880 coroapi.schedule = api_schedule; 3028 coroapi.schedule = api_schedule;
3029 coroapi.schedule_to = api_schedule_to;
1881 coroapi.cede = api_cede; 3030 coroapi.cede = api_cede;
1882 coroapi.cede_notself = api_cede_notself; 3031 coroapi.cede_notself = api_cede_notself;
1883 coroapi.ready = api_ready; 3032 coroapi.ready = api_ready;
1884 coroapi.is_ready = api_is_ready; 3033 coroapi.is_ready = api_is_ready;
1885 coroapi.nready = &coro_nready; 3034 coroapi.nready = coro_nready;
1886 coroapi.current = coro_current; 3035 coroapi.current = coro_current;
1887 3036
1888 GCoroAPI = &coroapi; 3037 /*GCoroAPI = &coroapi;*/
1889 sv_setiv (sv, (IV)&coroapi); 3038 sv_setiv (sv, (IV)&coroapi);
1890 SvREADONLY_on (sv); 3039 SvREADONLY_on (sv);
1891 } 3040 }
1892} 3041}
3042
3043void
3044schedule (...)
3045 CODE:
3046 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3047
3048void
3049schedule_to (...)
3050 CODE:
3051 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3052
3053void
3054cede_to (...)
3055 CODE:
3056 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3057
3058void
3059cede (...)
3060 CODE:
3061 CORO_EXECUTE_SLF_XS (slf_init_cede);
3062
3063void
3064cede_notself (...)
3065 CODE:
3066 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1893 3067
1894void 3068void
1895_set_current (SV *current) 3069_set_current (SV *current)
1896 PROTOTYPE: $ 3070 PROTOTYPE: $
1897 CODE: 3071 CODE:
1898 SvREFCNT_dec (SvRV (coro_current)); 3072 SvREFCNT_dec (SvRV (coro_current));
1899 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3073 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1900 3074
1901void 3075void
1902_set_readyhook (SV *hook) 3076_set_readyhook (SV *hook)
1903 PROTOTYPE: $ 3077 PROTOTYPE: $
1904 CODE: 3078 CODE:
1905 LOCK;
1906 if (coro_readyhook)
1907 SvREFCNT_dec (coro_readyhook); 3079 SvREFCNT_dec (coro_readyhook);
1908 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3080 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1909 UNLOCK;
1910 3081
1911int 3082int
1912prio (Coro::State coro, int newprio = 0) 3083prio (Coro::State coro, int newprio = 0)
3084 PROTOTYPE: $;$
1913 ALIAS: 3085 ALIAS:
1914 nice = 1 3086 nice = 1
1915 CODE: 3087 CODE:
1916{ 3088{
1917 RETVAL = coro->prio; 3089 RETVAL = coro->prio;
… …
1932 3104
1933SV * 3105SV *
1934ready (SV *self) 3106ready (SV *self)
1935 PROTOTYPE: $ 3107 PROTOTYPE: $
1936 CODE: 3108 CODE:
1937 RETVAL = boolSV (api_ready (self)); 3109 RETVAL = boolSV (api_ready (aTHX_ self));
1938 OUTPUT: 3110 OUTPUT:
1939 RETVAL 3111 RETVAL
1940 3112
1941int 3113int
1942nready (...) 3114nready (...)
… …
1945 RETVAL = coro_nready; 3117 RETVAL = coro_nready;
1946 OUTPUT: 3118 OUTPUT:
1947 RETVAL 3119 RETVAL
1948 3120
1949void 3121void
1950throw (Coro::State self, SV *throw = &PL_sv_undef) 3122_pool_handler (...)
3123 CODE:
3124 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3125
3126void
3127async_pool (SV *cv, ...)
1951 PROTOTYPE: $;$ 3128 PROTOTYPE: &@
3129 PPCODE:
3130{
3131 HV *hv = (HV *)av_pop (av_async_pool);
3132 AV *av = newAV ();
3133 SV *cb = ST (0);
3134 int i;
3135
3136 av_extend (av, items - 2);
3137 for (i = 1; i < items; ++i)
3138 av_push (av, SvREFCNT_inc_NN (ST (i)));
3139
3140 if ((SV *)hv == &PL_sv_undef)
3141 {
3142 PUSHMARK (SP);
3143 EXTEND (SP, 2);
3144 PUSHs (sv_Coro);
3145 PUSHs ((SV *)cv_pool_handler);
3146 PUTBACK;
3147 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3148 SPAGAIN;
3149
3150 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3151 }
3152
3153 {
3154 struct coro *coro = SvSTATE_hv (hv);
3155
3156 assert (!coro->invoke_cb);
3157 assert (!coro->invoke_av);
3158 coro->invoke_cb = SvREFCNT_inc (cb);
3159 coro->invoke_av = av;
3160 }
3161
3162 api_ready (aTHX_ (SV *)hv);
3163
3164 if (GIMME_V != G_VOID)
3165 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3166 else
3167 SvREFCNT_dec (hv);
3168}
3169
3170SV *
3171rouse_cb ()
3172 PROTOTYPE:
3173 CODE:
3174 RETVAL = coro_new_rouse_cb (aTHX);
3175 OUTPUT:
3176 RETVAL
3177
3178void
3179rouse_wait (...)
3180 PROTOTYPE: ;$
3181 PPCODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3183
3184
3185MODULE = Coro::State PACKAGE = PerlIO::cede
3186
3187BOOT:
3188 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3189
3190
3191MODULE = Coro::State PACKAGE = Coro::Semaphore
3192
3193SV *
3194new (SV *klass, SV *count = 0)
3195 CODE:
3196 RETVAL = sv_bless (
3197 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3198 GvSTASH (CvGV (cv))
3199 );
3200 OUTPUT:
3201 RETVAL
3202
3203# helper for Coro::Channel
3204SV *
3205_alloc (int count)
3206 CODE:
3207 RETVAL = coro_waitarray_new (aTHX_ count);
3208 OUTPUT:
3209 RETVAL
3210
3211SV *
3212count (SV *self)
3213 CODE:
3214 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3215 OUTPUT:
3216 RETVAL
3217
3218void
3219up (SV *self, int adjust = 1)
3220 ALIAS:
3221 adjust = 1
1952 CODE: 3222 CODE:
1953 SvREFCNT_dec (self->throw); 3223 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1954 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1955 3224
1956void 3225void
1957swap_defsv (Coro::State self) 3226down (...)
1958 PROTOTYPE: $
1959 ALIAS:
1960 swap_defav = 1
1961 CODE: 3227 CODE:
1962 if (!self->slot) 3228 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
1963 croak ("cannot swap state with coroutine that has no saved state"); 3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3234
3235void
3236try (SV *self)
3237 PPCODE:
3238{
3239 AV *av = (AV *)SvRV (self);
3240 SV *count_sv = AvARRAY (av)[0];
3241 IV count = SvIVX (count_sv);
3242
3243 if (count > 0)
3244 {
3245 --count;
3246 SvIVX (count_sv) = count;
3247 XSRETURN_YES;
3248 }
3249 else
3250 XSRETURN_NO;
3251}
3252
3253void
3254waiters (SV *self)
3255 PPCODE:
3256{
3257 AV *av = (AV *)SvRV (self);
3258 int wcount = AvFILLp (av) + 1 - 1;
3259
3260 if (GIMME_V == G_SCALAR)
3261 XPUSHs (sv_2mortal (newSViv (wcount)));
1964 else 3262 else
1965 { 3263 {
1966 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3264 int i;
1967 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3265 EXTEND (SP, wcount);
1968 3266 for (i = 1; i <= wcount; ++i)
1969 SV *tmp = *src; *src = *dst; *dst = tmp; 3267 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
1970 } 3268 }
3269}
1971 3270
1972# for async_pool speedup 3271MODULE = Coro::State PACKAGE = Coro::Signal
3272
3273SV *
3274new (SV *klass)
3275 CODE:
3276 RETVAL = sv_bless (
3277 coro_waitarray_new (aTHX_ 0),
3278 GvSTASH (CvGV (cv))
3279 );
3280 OUTPUT:
3281 RETVAL
3282
1973void 3283void
1974_pool_1 (SV *cb) 3284wait (...)
1975 CODE: 3285 CODE:
1976{ 3286 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
1977 struct coro *coro = SvSTATE (coro_current);
1978 HV *hv = (HV *)SvRV (coro_current);
1979 AV *defav = GvAV (PL_defgv);
1980 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1981 AV *invoke_av;
1982 int i, len;
1983
1984 if (!invoke)
1985 {
1986 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1987 croak ("\3async_pool terminate\2\n");
1988 }
1989
1990 SvREFCNT_dec (coro->saved_deffh);
1991 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1992
1993 hv_store (hv, "desc", sizeof ("desc") - 1,
1994 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1995
1996 invoke_av = (AV *)SvRV (invoke);
1997 len = av_len (invoke_av);
1998
1999 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2000
2001 if (len > 0)
2002 {
2003 av_fill (defav, len - 1);
2004 for (i = 0; i < len; ++i)
2005 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2006 }
2007
2008 SvREFCNT_dec (invoke);
2009}
2010 3287
2011void 3288void
2012_pool_2 (SV *cb) 3289broadcast (SV *self)
3290 CODE:
3291{
3292 AV *av = (AV *)SvRV (self);
3293 coro_signal_wake (aTHX_ av, AvFILLp (av));
3294}
3295
3296void
3297send (SV *self)
3298 CODE:
3299{
3300 AV *av = (AV *)SvRV (self);
3301
3302 if (AvFILLp (av))
3303 coro_signal_wake (aTHX_ av, 1);
3304 else
3305 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3306}
3307
3308IV
3309awaited (SV *self)
2013 CODE: 3310 CODE:
2014{ 3311 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
2015 struct coro *coro = SvSTATE (coro_current);
2016
2017 sv_setsv (cb, &PL_sv_undef);
2018
2019 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2020 coro->saved_deffh = 0;
2021
2022 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2023 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2024 {
2025 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
2026 croak ("\3async_pool terminate\2\n");
2027 }
2028
2029 av_clear (GvAV (PL_defgv));
2030 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2031 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2032
2033 coro->prio = 0;
2034
2035 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2036 api_trace (coro_current, 0);
2037
2038 av_push (av_async_pool, newSVsv (coro_current));
2039}
2040
2041
2042MODULE = Coro::State PACKAGE = Coro::AIO
2043
2044SV *
2045_get_state ()
2046 CODE:
2047{
2048 struct io_state *data;
2049
2050 RETVAL = newSV (sizeof (struct io_state));
2051 data = (struct io_state *)SvPVX (RETVAL);
2052 SvCUR_set (RETVAL, sizeof (struct io_state));
2053 SvPOK_only (RETVAL);
2054
2055 data->errorno = errno;
2056 data->laststype = PL_laststype;
2057 data->laststatval = PL_laststatval;
2058 data->statcache = PL_statcache;
2059}
2060 OUTPUT: 3312 OUTPUT:
2061 RETVAL 3313 RETVAL
2062 3314
2063void
2064_set_state (char *data_)
2065 PROTOTYPE: $
2066 CODE:
2067{
2068 struct io_state *data = (void *)data_;
2069
2070 errno = data->errorno;
2071 PL_laststype = data->laststype;
2072 PL_laststatval = data->laststatval;
2073 PL_statcache = data->statcache;
2074}
2075
2076 3315
2077MODULE = Coro::State PACKAGE = Coro::AnyEvent 3316MODULE = Coro::State PACKAGE = Coro::AnyEvent
2078 3317
2079BOOT: 3318BOOT:
2080 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3319 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2081 3320
2082SV * 3321void
2083_schedule () 3322_schedule (...)
2084 PROTOTYPE: @
2085 CODE: 3323 CODE:
2086{ 3324{
2087 static int incede; 3325 static int incede;
2088 fprintf (stderr, "_schedule\n");//D
2089 3326
2090 api_cede_notself (); 3327 api_cede_notself (aTHX);
2091 3328
2092 ++incede; 3329 ++incede;
2093 while (coro_nready >= incede && api_cede ()) 3330 while (coro_nready >= incede && api_cede (aTHX))
2094 ; 3331 ;
2095 3332
2096 sv_setsv (sv_activity, &PL_sv_undef); 3333 sv_setsv (sv_activity, &PL_sv_undef);
2097 if (coro_nready >= incede) 3334 if (coro_nready >= incede)
2098 { 3335 {
2099 PUSHMARK (SP); 3336 PUSHMARK (SP);
2100 PUTBACK; 3337 PUTBACK;
2101 fprintf (stderr, "call act %d >= %d\n", coro_nready, incede);//D
2102 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3338 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2103 SPAGAIN;
2104 } 3339 }
2105 3340
2106 --incede; 3341 --incede;
2107} 3342}
2108 3343
3344
3345MODULE = Coro::State PACKAGE = Coro::AIO
3346
3347void
3348_register (char *target, char *proto, SV *req)
3349 CODE:
3350{
3351 CV *req_cv = coro_sv_2cv (aTHX_ req);
3352 /* newXSproto doesn't return the CV on 5.8 */
3353 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3354 sv_setpv ((SV *)slf_cv, proto);
3355 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3356}
3357

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