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Comparing Coro/Coro/State.xs (file contents):
Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC vs.
Revision 1.264 by root, Fri Nov 14 02:29:09 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 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
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
88/* prefer perl internal functions over our own? */ 114/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 115#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macro should declare a variable stacklevel that contains and approximation 119/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 120 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 121#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 122#define STACKLEVEL ((void *)&stacklevel)
98 123
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 124#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 125
101#if __GNUC__ >= 3 126#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 127# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 128# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline
104#else 130#else
105# define attribute(x) 131# define attribute(x)
106# define BARRIER 132# define expect(expr,value) (expr)
133# define INLINE static
107#endif 134#endif
135
136#define expect_false(expr) expect ((expr) != 0, 0)
137#define expect_true(expr) expect ((expr) != 0, 1)
108 138
109#define NOINLINE attribute ((noinline)) 139#define NOINLINE attribute ((noinline))
110 140
111#include "CoroAPI.h" 141#include "CoroAPI.h"
112 142
113#ifdef USE_ITHREADS 143#ifdef USE_ITHREADS
144
114static perl_mutex coro_mutex; 145static perl_mutex coro_lock;
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD
149static void *coro_thx;
150# endif
151
117#else 152#else
153
118# define LOCK (void)0 154# define LOCK (void)0
119# define UNLOCK (void)0 155# define UNLOCK (void)0
156
120#endif 157#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
121 163
122/* helper storage struct for Coro::AIO */ 164/* helper storage struct for Coro::AIO */
123struct io_state 165struct io_state
124{ 166{
167 AV *res;
125 int errorno; 168 int errorno;
126 I32 laststype; 169 I32 laststype; /* U16 in 5.10.0 */
127 int laststatval; 170 int laststatval;
128 Stat_t statcache; 171 Stat_t statcache;
129}; 172};
130 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175
176static U32 cctx_gen;
131static size_t coro_stacksize = CORO_STACKSIZE; 177static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 178static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 179static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 180static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 181static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189
190static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook;
193static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */
195
196/* async_pool helper stuff */
197static SV *sv_pool_rss;
198static SV *sv_pool_size;
199static AV *av_async_pool;
200
201/* Coro::AnyEvent */
202static SV *sv_activity;
137 203
138static struct coro_cctx *cctx_first; 204static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 205static int cctx_count, cctx_idle;
206
207enum {
208 CC_MAPPED = 0x01,
209 CC_NOREUSE = 0x02, /* throw this away after tracing */
210 CC_TRACE = 0x04,
211 CC_TRACE_SUB = 0x08, /* trace sub calls */
212 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214};
140 215
141/* this is a structure representing a c-level coroutine */ 216/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 217typedef struct coro_cctx {
143 struct coro_cctx *next; 218 struct coro_cctx *next;
144 219
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
151 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 226 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 227 JMPENV *top_env;
153 coro_context cctx; 228 coro_context cctx;
154 229
230 U32 gen;
155#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
156 int valgrind_id; 232 int valgrind_id;
157#endif 233#endif
158 char inuse, mapped; 234 unsigned char flags;
159} coro_cctx; 235} coro_cctx;
160 236
161enum { 237enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 242};
167 243
244/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct {
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name;
251# include "state.h"
252#undef VAR
253} perl_slots;
254
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256
168/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
169struct coro { 258struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 260 coro_cctx *cctx;
172 261
262 /* process data */
263 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */
265
173 /* data associated with this coroutine (initial args) */ 266 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 267 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 268 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */
178 270
179 /* optionally saved, might be zero */ 271 /* statistics */
180 AV *defav; /* @_ */ 272 int usecount; /* number of transfers to this coro */
181 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */
186
187#define VAR(name,type) type name;
188# include "state.h"
189#undef VAR
190 273
191 /* coro process data */ 274 /* coro process data */
192 int prio; 275 int prio;
276 SV *throw; /* exception to be thrown */
277
278 /* async_pool */
279 SV *saved_deffh;
280
281 /* linked list */
282 struct coro *next, *prev;
193}; 283};
194 284
195typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
196typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
197 287
… …
204#define PRIO_IDLE -3 294#define PRIO_IDLE -3
205#define PRIO_MIN -4 295#define PRIO_MIN -4
206 296
207/* for Coro.pm */ 297/* for Coro.pm */
208static SV *coro_current; 298static SV *coro_current;
299static SV *coro_readyhook;
209static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
210static int coro_nready; 301static int coro_nready;
302static struct coro *coro_first;
211 303
212/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
305
306static SV *
307coro_get_sv (pTHX_ const char *name, int create)
308{
309#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create);
312#endif
313 return get_sv (name, create);
314}
315
316static AV *
317coro_get_av (pTHX_ const char *name, int create)
318{
319#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create);
322#endif
323 return get_av (name, create);
324}
325
326static HV *
327coro_get_hv (pTHX_ const char *name, int create)
328{
329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create);
332#endif
333 return get_hv (name, create);
334}
213 335
214static AV * 336static AV *
215coro_clone_padlist (pTHX_ CV *cv) 337coro_clone_padlist (pTHX_ CV *cv)
216{ 338{
217 AV *padlist = CvPADLIST (cv); 339 AV *padlist = CvPADLIST (cv);
218 AV *newpadlist, *newpad; 340 AV *newpadlist, *newpad;
219 341
220 newpadlist = newAV (); 342 newpadlist = newAV ();
221 AvREAL_off (newpadlist); 343 AvREAL_off (newpadlist);
222#if PERL_VERSION_ATLEAST (5,9,0) 344#if PERL_VERSION_ATLEAST (5,10,0)
223 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
224#else 346#else
225 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
226#endif 348#endif
227 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
228 --AvFILLp (padlist); 350 --AvFILLp (padlist);
229 351
230 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
231 av_store (newpadlist, 1, (SV *)newpad); 353 av_store (newpadlist, 1, (SV *)newpad);
232 354
233 return newpadlist; 355 return newpadlist;
234} 356}
235 357
… …
265 387
266 /* casting is fun. */ 388 /* casting is fun. */
267 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268 free_padlist (aTHX_ padlist); 390 free_padlist (aTHX_ padlist);
269 391
270 SvREFCNT_dec (av); 392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
271 393
272 return 0; 394 return 0;
273} 395}
274 396
275#define PERL_MAGIC_coro PERL_MAGIC_ext 397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
276 399
277static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 400static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0,
402 coro_cv_free
403};
278 404
279#define CORO_MAGIC(cv) \ 405#define CORO_MAGIC(sv, type) \
280 SvMAGIC (cv) \ 406 SvMAGIC (sv) \
281 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 407 ? SvMAGIC (sv)->mg_type == type \
282 ? SvMAGIC (cv) \ 408 ? SvMAGIC (sv) \
283 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 409 : mg_find (sv, type) \
284 : 0 410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
285 440
286/* the next two functions merely cache the padlists */ 441/* the next two functions merely cache the padlists */
287static void 442static void
288get_padlist (pTHX_ CV *cv) 443get_padlist (pTHX_ CV *cv)
289{ 444{
290 MAGIC *mg = CORO_MAGIC (cv); 445 MAGIC *mg = CORO_MAGIC_cv (cv);
291 AV *av; 446 AV *av;
292 447
293 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 450 else
296 { 451 {
297#if CORO_PREFER_PERL_FUNCTIONS 452#if CORO_PREFER_PERL_FUNCTIONS
298 /* this is probably cleaner, but also slower? */ 453 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */
299 CV *cp = Perl_cv_clone (cv); 455 CV *cp = Perl_cv_clone (cv);
300 CvPADLIST (cv) = CvPADLIST (cp); 456 CvPADLIST (cv) = CvPADLIST (cp);
301 CvPADLIST (cp) = 0; 457 CvPADLIST (cp) = 0;
302 SvREFCNT_dec (cp); 458 SvREFCNT_dec (cp);
303#else 459#else
… …
307} 463}
308 464
309static void 465static void
310put_padlist (pTHX_ CV *cv) 466put_padlist (pTHX_ CV *cv)
311{ 467{
312 MAGIC *mg = CORO_MAGIC (cv); 468 MAGIC *mg = CORO_MAGIC_cv (cv);
313 AV *av; 469 AV *av;
314 470
315 if (!mg) 471 if (expect_false (!mg))
316 { 472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
317 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
318 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
319 mg->mg_virtual = &vtbl_coro;
320 mg->mg_obj = (SV *)newAV ();
321 }
322 473
323 av = (AV *)mg->mg_obj; 474 av = (AV *)mg->mg_obj;
324 475
325 if (AvFILLp (av) >= AvMAX (av)) 476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
326 av_extend (av, AvMAX (av) + 1); 477 av_extend (av, AvMAX (av) + 1);
327 478
328 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329} 480}
330 481
331/** load & save, init *******************************************************/ 482/** load & save, init *******************************************************/
332
333#define SB do {
334#define SE } while (0)
335
336#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
337 483
338static void 484static void
339load_perl (pTHX_ Coro__State c) 485load_perl (pTHX_ Coro__State c)
340{ 486{
487 perl_slots *slot = c->slot;
488 c->slot = 0;
489
490 PL_mainstack = c->mainstack;
491
492 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv;
496
341#define VAR(name,type) PL_ ## name = c->name; 497 #define VAR(name,type) PL_ ## name = slot->name;
342# include "state.h" 498 # include "state.h"
343#undef VAR 499 #undef VAR
344
345 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
346 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
347 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
348 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
349
350 if (c->irssv)
351 {
352 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
353 {
354 SvREFCNT_dec (c->irssv);
355 c->irssv = 0;
356 }
357 else
358 {
359 REPLACE_SV (PL_rs, c->irssv);
360 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
361 sv_setsv (c->irssv_sv, PL_rs);
362 }
363 }
364 500
365 { 501 {
366 dSP; 502 dSP;
503
367 CV *cv; 504 CV *cv;
368 505
369 /* now do the ugly restore mess */ 506 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 507 while (expect_true (cv = (CV *)POPs))
371 { 508 {
372 put_padlist (aTHX_ cv); /* mark this padlist as available */ 509 put_padlist (aTHX_ cv); /* mark this padlist as available */
373 CvDEPTH (cv) = PTR2IV (POPs); 510 CvDEPTH (cv) = PTR2IV (POPs);
374 CvPADLIST (cv) = (AV *)POPs; 511 CvPADLIST (cv) = (AV *)POPs;
375 } 512 }
376 513
377 PUTBACK; 514 PUTBACK;
378 } 515 }
379 assert (!PL_comppad || AvARRAY (PL_comppad));//D
380} 516}
381 517
382static void 518static void
383save_perl (pTHX_ Coro__State c) 519save_perl (pTHX_ Coro__State c)
384{ 520{
385 assert (!PL_comppad || AvARRAY (PL_comppad));//D
386 { 521 {
387 dSP; 522 dSP;
388 I32 cxix = cxstack_ix; 523 I32 cxix = cxstack_ix;
389 PERL_CONTEXT *ccstk = cxstack; 524 PERL_CONTEXT *ccstk = cxstack;
390 PERL_SI *top_si = PL_curstackinfo; 525 PERL_SI *top_si = PL_curstackinfo;
… …
392 /* 527 /*
393 * the worst thing you can imagine happens first - we have to save 528 * the worst thing you can imagine happens first - we have to save
394 * (and reinitialize) all cv's in the whole callchain :( 529 * (and reinitialize) all cv's in the whole callchain :(
395 */ 530 */
396 531
397 EXTEND (SP, 3 + 1);
398 PUSHs (Nullsv); 532 XPUSHs (Nullsv);
399 /* this loop was inspired by pp_caller */ 533 /* this loop was inspired by pp_caller */
400 for (;;) 534 for (;;)
401 { 535 {
402 while (cxix >= 0) 536 while (expect_true (cxix >= 0))
403 { 537 {
404 PERL_CONTEXT *cx = &ccstk[cxix--]; 538 PERL_CONTEXT *cx = &ccstk[cxix--];
405 539
406 if (CxTYPE (cx) == CXt_SUB) 540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407 { 541 {
408 CV *cv = cx->blk_sub.cv; 542 CV *cv = cx->blk_sub.cv;
409 543
410 if (CvDEPTH (cv)) 544 if (expect_true (CvDEPTH (cv)))
411 { 545 {
412 EXTEND (SP, 3); 546 EXTEND (SP, 3);
413 PUSHs ((SV *)CvPADLIST (cv)); 547 PUSHs ((SV *)CvPADLIST (cv));
414 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
415 PUSHs ((SV *)cv); 549 PUSHs ((SV *)cv);
416 550
417 CvDEPTH (cv) = 0; 551 CvDEPTH (cv) = 0;
418 get_padlist (aTHX_ cv); 552 get_padlist (aTHX_ cv);
419 } 553 }
420 } 554 }
421 } 555 }
422 556
423 if (top_si->si_type == PERLSI_MAIN) 557 if (expect_true (top_si->si_type == PERLSI_MAIN))
424 break; 558 break;
425 559
426 top_si = top_si->si_prev; 560 top_si = top_si->si_prev;
427 ccstk = top_si->si_cxstack; 561 ccstk = top_si->si_cxstack;
428 cxix = top_si->si_cxix; 562 cxix = top_si->si_cxix;
429 } 563 }
430 564
431 PUTBACK; 565 PUTBACK;
432 } 566 }
433 567
434 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 568 /* allocate some space on the context stack for our purposes */
435 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 569 /* we manually unroll here, as usually 2 slots is enough */
436 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 570 if (SLOT_COUNT >= 1) CXINC;
437 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 571 if (SLOT_COUNT >= 2) CXINC;
438 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 572 if (SLOT_COUNT >= 3) CXINC;
573 {
574 int i;
575 for (i = 3; i < SLOT_COUNT; ++i)
576 CXINC;
577 }
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */
439 579
580 c->mainstack = PL_mainstack;
581
582 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584
585 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV;
587 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv);
589
440#define VAR(name,type)c->name = PL_ ## name; 590 #define VAR(name,type) slot->name = PL_ ## name;
441# include "state.h" 591 # include "state.h"
442#undef VAR 592 #undef VAR
593 }
443} 594}
444 595
445/* 596/*
446 * allocate various perl stacks. This is an exact copy 597 * allocate various perl stacks. This is an exact copy
447 * of perl.c:init_stacks, except that it uses less memory 598 * of perl.c:init_stacks, except that it uses less memory
… …
452# define coro_init_stacks init_stacks 603# define coro_init_stacks init_stacks
453#else 604#else
454static void 605static void
455coro_init_stacks (pTHX) 606coro_init_stacks (pTHX)
456{ 607{
457 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 608 PL_curstackinfo = new_stackinfo(32, 8);
458 PL_curstackinfo->si_type = PERLSI_MAIN; 609 PL_curstackinfo->si_type = PERLSI_MAIN;
459 PL_curstack = PL_curstackinfo->si_stack; 610 PL_curstack = PL_curstackinfo->si_stack;
460 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461 612
462 PL_stack_base = AvARRAY(PL_curstack); 613 PL_stack_base = AvARRAY(PL_curstack);
463 PL_stack_sp = PL_stack_base; 614 PL_stack_sp = PL_stack_base;
464 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 615 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465 616
466 New(50,PL_tmps_stack,128,SV*); 617 New(50,PL_tmps_stack,32,SV*);
467 PL_tmps_floor = -1; 618 PL_tmps_floor = -1;
468 PL_tmps_ix = -1; 619 PL_tmps_ix = -1;
469 PL_tmps_max = 128; 620 PL_tmps_max = 32;
470 621
471 New(54,PL_markstack,32,I32); 622 New(54,PL_markstack,16,I32);
472 PL_markstack_ptr = PL_markstack; 623 PL_markstack_ptr = PL_markstack;
473 PL_markstack_max = PL_markstack + 32; 624 PL_markstack_max = PL_markstack + 16;
474 625
475#ifdef SET_MARK_OFFSET 626#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 627 SET_MARK_OFFSET;
477#endif 628#endif
478 629
479 New(54,PL_scopestack,32,I32); 630 New(54,PL_scopestack,8,I32);
480 PL_scopestack_ix = 0; 631 PL_scopestack_ix = 0;
481 PL_scopestack_max = 32; 632 PL_scopestack_max = 8;
482 633
483 New(54,PL_savestack,64,ANY); 634 New(54,PL_savestack,24,ANY);
484 PL_savestack_ix = 0; 635 PL_savestack_ix = 0;
485 PL_savestack_max = 64; 636 PL_savestack_max = 24;
486 637
487#if !PERL_VERSION_ATLEAST (5,9,0) 638#if !PERL_VERSION_ATLEAST (5,10,0)
488 New(54,PL_retstack,16,OP*); 639 New(54,PL_retstack,4,OP*);
489 PL_retstack_ix = 0; 640 PL_retstack_ix = 0;
490 PL_retstack_max = 16; 641 PL_retstack_max = 4;
491#endif 642#endif
492} 643}
493#endif 644#endif
494 645
495/* 646/*
496 * destroy the stacks, the callchain etc... 647 * destroy the stacks, the callchain etc...
497 */ 648 */
498static void 649static void
499coro_destroy_stacks (pTHX) 650coro_destruct_stacks (pTHX)
500{ 651{
501 if (!IN_DESTRUCT)
502 {
503 /* restore all saved variables and stuff */
504 LEAVE_SCOPE (0);
505 assert (PL_tmps_floor == -1);
506
507 /* free all temporaries */
508 FREETMPS;
509 assert (PL_tmps_ix == -1);
510
511 /* unwind all extra stacks */
512 POPSTACK_TO (PL_mainstack);
513
514 /* unwind main stack */
515 dounwind (-1);
516 }
517
518 while (PL_curstackinfo->si_next) 652 while (PL_curstackinfo->si_next)
519 PL_curstackinfo = PL_curstackinfo->si_next; 653 PL_curstackinfo = PL_curstackinfo->si_next;
520 654
521 while (PL_curstackinfo) 655 while (PL_curstackinfo)
522 { 656 {
… …
532 666
533 Safefree (PL_tmps_stack); 667 Safefree (PL_tmps_stack);
534 Safefree (PL_markstack); 668 Safefree (PL_markstack);
535 Safefree (PL_scopestack); 669 Safefree (PL_scopestack);
536 Safefree (PL_savestack); 670 Safefree (PL_savestack);
537#if !PERL_VERSION_ATLEAST (5,9,0) 671#if !PERL_VERSION_ATLEAST (5,10,0)
538 Safefree (PL_retstack); 672 Safefree (PL_retstack);
539#endif 673#endif
540} 674}
541 675
676static size_t
677coro_rss (pTHX_ struct coro *coro)
678{
679 size_t rss = sizeof (*coro);
680
681 if (coro->mainstack)
682 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING)
687 {
688 slot = &tmp_slot;
689
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR
693 }
694 else
695 slot = coro->slot;
696
697 if (slot)
698 {
699 rss += sizeof (slot->curstackinfo);
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 }
711 }
712
713 return rss;
714}
715
542/** coroutine stack handling ************************************************/ 716/** coroutine stack handling ************************************************/
543 717
718static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
719static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
720static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
721
722/* apparently < 5.8.8 */
723#ifndef MgPV_nolen_const
724#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
725 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
726 (const char*)(mg)->mg_ptr)
727#endif
728
729/* we sometimes need to create the effect of entersub calling us */
730#define SSL_HEAD (void)0
731/* we somtimes need to create the effect of leaving via entersub */
732#define SSL_TAIL (void)0
733
734/*
735 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide
738 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */
743static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
760 }
761
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = newSVsv (sv);
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
544static void 813static void
545setup_coro (pTHX_ struct coro *coro) 814coro_setup (pTHX_ struct coro *coro)
546{ 815{
547 /* 816 /*
548 * emulate part of the perl startup here. 817 * emulate part of the perl startup here.
549 */ 818 */
550 coro_init_stacks (aTHX); 819 coro_init_stacks (aTHX);
551 820
821 PL_runops = RUNOPS_DEFAULT;
552 PL_curcop = &PL_compiling; 822 PL_curcop = &PL_compiling;
553 PL_in_eval = EVAL_NULL; 823 PL_in_eval = EVAL_NULL;
554 PL_comppad = 0; 824 PL_comppad = 0;
555 PL_curpm = 0; 825 PL_curpm = 0;
826 PL_curpad = 0;
556 PL_localizing = 0; 827 PL_localizing = 0;
557 PL_dirty = 0; 828 PL_dirty = 0;
558 PL_restartop = 0; 829 PL_restartop = 0;
830#if PERL_VERSION_ATLEAST (5,10,0)
831 PL_parser = 0;
832#endif
833
834 /* recreate the die/warn hooks */
835 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
836 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
837
838 GvSV (PL_defgv) = newSV (0);
839 GvAV (PL_defgv) = coro->args; coro->args = 0;
840 GvSV (PL_errgv) = newSV (0);
841 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
842 PL_rs = newSVsv (GvSV (irsgv));
843 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
559 844
560 { 845 {
561 dSP; 846 dSP;
562 LOGOP myop; 847 UNOP myop;
563 848
564 SvREFCNT_dec (GvAV (PL_defgv));
565 GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567 Zero (&myop, 1, LOGOP); 849 Zero (&myop, 1, UNOP);
568 myop.op_next = Nullop; 850 myop.op_next = Nullop;
569 myop.op_flags = OPf_WANT_VOID; 851 myop.op_flags = OPf_WANT_VOID;
570 852
571 PUSHMARK (SP); 853 PUSHMARK (SP);
572 XPUSHs (av_shift (GvAV (PL_defgv))); 854 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573 PUTBACK; 855 PUTBACK;
574 PL_op = (OP *)&myop; 856 PL_op = (OP *)&myop;
575 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 857 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576 SPAGAIN; 858 SPAGAIN;
577 } 859 }
578 860
579 ENTER; /* necessary e.g. for dounwind */ 861 /* this newly created coroutine might be run on an existing cctx which most
862 * likely was suspended in set_stacklevel, called from entersub.
863 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
864 * so we ENTER here for symmetry.
865 */
866 SSL_HEAD;
580} 867}
581 868
582static void 869static void
870coro_destruct (pTHX_ struct coro *coro)
871{
872 if (!IN_DESTRUCT)
873 {
874 /* restore all saved variables and stuff */
875 LEAVE_SCOPE (0);
876 assert (PL_tmps_floor == -1);
877
878 /* free all temporaries */
879 FREETMPS;
880 assert (PL_tmps_ix == -1);
881
882 /* unwind all extra stacks */
883 POPSTACK_TO (PL_mainstack);
884
885 /* unwind main stack */
886 dounwind (-1);
887 }
888
889 SvREFCNT_dec (GvSV (PL_defgv));
890 SvREFCNT_dec (GvAV (PL_defgv));
891 SvREFCNT_dec (GvSV (PL_errgv));
892 SvREFCNT_dec (PL_defoutgv);
893 SvREFCNT_dec (PL_rs);
894 SvREFCNT_dec (GvSV (irsgv));
895
896 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook);
898
899 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw);
901
902 coro_destruct_stacks (aTHX);
903}
904
905INLINE void
583free_coro_mortal (pTHX) 906free_coro_mortal (pTHX)
584{ 907{
585 if (coro_mortal) 908 if (expect_true (coro_mortal))
586 { 909 {
587 SvREFCNT_dec (coro_mortal); 910 SvREFCNT_dec (coro_mortal);
588 coro_mortal = 0; 911 coro_mortal = 0;
589 } 912 }
913}
914
915static int
916runops_trace (pTHX)
917{
918 COP *oldcop = 0;
919 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 {
925 PERL_ASYNC_CHECK ();
926
927 if (cctx->flags & CC_TRACE_ALL)
928 {
929 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
930 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top;
933 AV *av = newAV (); /* return values */
934 SV **cb;
935 dSP;
936
937 GV *gv = CvGV (cx->blk_sub.cv);
938 SV *fullname = sv_2mortal (newSV (0));
939 if (isGV (gv))
940 gv_efullname3 (fullname, gv, 0);
941
942 bot = PL_stack_base + cx->blk_oldsp + 1;
943 top = cx->blk_gimme == G_ARRAY ? SP + 1
944 : cx->blk_gimme == G_SCALAR ? bot + 1
945 : bot;
946
947 av_extend (av, top - bot);
948 while (bot < top)
949 av_push (av, SvREFCNT_inc_NN (*bot++));
950
951 PL_runops = RUNOPS_DEFAULT;
952 ENTER;
953 SAVETMPS;
954 EXTEND (SP, 3);
955 PUSHMARK (SP);
956 PUSHs (&PL_sv_no);
957 PUSHs (fullname);
958 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
959 PUTBACK;
960 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
961 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
962 SPAGAIN;
963 FREETMPS;
964 LEAVE;
965 PL_runops = runops_trace;
966 }
967
968 if (oldcop != PL_curcop)
969 {
970 oldcop = PL_curcop;
971
972 if (PL_curcop != &PL_compiling)
973 {
974 SV **cb;
975
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
977 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 {
982 runops_proc_t old_runops = PL_runops;
983 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0));
986
987 if (isGV (gv))
988 gv_efullname3 (fullname, gv, 0);
989
990 PL_runops = RUNOPS_DEFAULT;
991 ENTER;
992 SAVETMPS;
993 EXTEND (SP, 3);
994 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes);
996 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN;
1002 FREETMPS;
1003 LEAVE;
1004 PL_runops = runops_trace;
1005 }
1006
1007 oldcxix = cxstack_ix;
1008 }
1009
1010 if (cctx->flags & CC_TRACE_LINE)
1011 {
1012 dSP;
1013
1014 PL_runops = RUNOPS_DEFAULT;
1015 ENTER;
1016 SAVETMPS;
1017 EXTEND (SP, 3);
1018 PL_runops = RUNOPS_DEFAULT;
1019 PUSHMARK (SP);
1020 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1021 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1022 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN;
1026 FREETMPS;
1027 LEAVE;
1028 PL_runops = runops_trace;
1029 }
1030 }
1031 }
1032 }
1033 }
1034
1035 TAINT_NOT;
1036 return 0;
1037}
1038
1039static void
1040prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1041{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0;
590} 1044}
591 1045
592/* inject a fake call to Coro::State::_cctx_init into the execution */ 1046/* inject a fake call to Coro::State::_cctx_init into the execution */
593/* _cctx_init should be careful, as it could be called at almost any time */ 1047/* _cctx_init should be careful, as it could be called at almost any time */
594/* during execution of a perl program */ 1048/* during execution of a perl program */
1049/* also initialises PL_top_env */
595static void NOINLINE 1050static void NOINLINE
596prepare_cctx (pTHX_ coro_cctx *cctx) 1051cctx_prepare (pTHX_ coro_cctx *cctx)
597{ 1052{
598 dSP; 1053 dSP;
599 LOGOP myop; 1054 UNOP myop;
600 1055
1056 PL_top_env = &PL_start_env;
1057
1058 if (cctx->flags & CC_TRACE)
1059 PL_runops = runops_trace;
1060
601 Zero (&myop, 1, LOGOP); 1061 Zero (&myop, 1, UNOP);
602 myop.op_next = PL_op; 1062 myop.op_next = PL_op;
603 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604 1064
605 PUSHMARK (SP); 1065 PUSHMARK (SP);
606 EXTEND (SP, 2); 1066 EXTEND (SP, 2);
607 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1067 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
608 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
609 PUTBACK; 1069 PUTBACK;
610 PL_op = (OP *)&myop; 1070 PL_op = (OP *)&myop;
611 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
612 SPAGAIN; 1072 SPAGAIN;
613} 1073}
614 1074
1075/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void
1077transfer_tail (pTHX)
1078{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX);
1084 UNLOCK;
1085
1086 if (expect_false (next->throw))
1087 {
1088 SV *exception = sv_2mortal (next->throw);
1089
1090 next->throw = 0;
1091 sv_setsv (ERRSV, exception);
1092 croak (0);
1093 }
1094}
1095
615/* 1096/*
616 * this is a _very_ stripped down perl interpreter ;) 1097 * this is a _very_ stripped down perl interpreter ;)
617 */ 1098 */
618static void 1099static void
619coro_run (void *arg) 1100cctx_run (void *arg)
620{ 1101{
1102#ifdef USE_ITHREADS
1103# if CORO_PTHREAD
1104 PERL_SET_CONTEXT (coro_thx);
1105# endif
1106#endif
1107 {
621 dTHX; 1108 dTHX;
622 1109
623 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1110 /* entersub called ENTER, but we never 'returned', undo that here */
624 UNLOCK; 1111 SSL_TAIL;
625 1112
626 PL_top_env = &PL_start_env; 1113 /* we now skip the op that did lead to transfer() */
1114 PL_op = PL_op->op_next;
627 1115
628 /* inject a fake subroutine call to cctx_init */ 1116 /* inject a fake subroutine call to cctx_init */
629 prepare_cctx (aTHX_ (coro_cctx *)arg); 1117 cctx_prepare (aTHX_ (coro_cctx *)arg);
630 1118
1119 /* cctx_run is the alternative tail of transfer() */
1120 transfer_tail (aTHX);
1121
631 /* somebody or something will hit me for both perl_run and PL_restartop */ 1122 /* somebody or something will hit me for both perl_run and PL_restartop */
632 PL_restartop = PL_op; 1123 PL_restartop = PL_op;
633 perl_run (PL_curinterp); 1124 perl_run (PL_curinterp);
634 1125
635 /* 1126 /*
636 * If perl-run returns we assume exit() was being called or the coro 1127 * If perl-run returns we assume exit() was being called or the coro
637 * fell off the end, which seems to be the only valid (non-bug) 1128 * fell off the end, which seems to be the only valid (non-bug)
638 * reason for perl_run to return. We try to exit by jumping to the 1129 * reason for perl_run to return. We try to exit by jumping to the
639 * bootstrap-time "top" top_env, as we cannot restore the "main" 1130 * bootstrap-time "top" top_env, as we cannot restore the "main"
640 * coroutine as Coro has no such concept 1131 * coroutine as Coro has no such concept
641 */ 1132 */
642 PL_top_env = main_top_env; 1133 PL_top_env = main_top_env;
643 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1134 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1135 }
644} 1136}
645 1137
646static coro_cctx * 1138static coro_cctx *
647cctx_new () 1139cctx_new ()
648{ 1140{
649 coro_cctx *cctx; 1141 coro_cctx *cctx;
1142
1143 ++cctx_count;
1144 New (0, cctx, 1, coro_cctx);
1145
1146 cctx->gen = cctx_gen;
1147 cctx->flags = 0;
1148 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1149
1150 return cctx;
1151}
1152
1153/* create a new cctx only suitable as source */
1154static coro_cctx *
1155cctx_new_empty ()
1156{
1157 coro_cctx *cctx = cctx_new ();
1158
1159 cctx->sptr = 0;
1160 coro_create (&cctx->cctx, 0, 0, 0, 0);
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx suitable as destination/running a perl interpreter */
1166static coro_cctx *
1167cctx_new_run ()
1168{
1169 coro_cctx *cctx = cctx_new ();
650 void *stack_start; 1170 void *stack_start;
651 size_t stack_size; 1171 size_t stack_size;
652 1172
653 ++cctx_count;
654
655 Newz (0, cctx, 1, coro_cctx);
656
657#if HAVE_MMAP 1173#if HAVE_MMAP
658
659 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1174 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
660 /* mmap supposedly does allocate-on-write for us */ 1175 /* mmap supposedly does allocate-on-write for us */
661 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1176 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
662 1177
663 if (cctx->sptr != (void *)-1) 1178 if (cctx->sptr != (void *)-1)
664 { 1179 {
665# if CORO_STACKGUARD 1180 #if CORO_STACKGUARD
666 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1181 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
667# endif 1182 #endif
668 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1183 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
669 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1184 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
670 cctx->mapped = 1; 1185 cctx->flags |= CC_MAPPED;
671 } 1186 }
672 else 1187 else
673#endif 1188#endif
674 { 1189 {
675 cctx->ssize = coro_stacksize * (long)sizeof (long); 1190 cctx->ssize = cctx_stacksize * (long)sizeof (long);
676 New (0, cctx->sptr, coro_stacksize, long); 1191 New (0, cctx->sptr, cctx_stacksize, long);
677 1192
678 if (!cctx->sptr) 1193 if (!cctx->sptr)
679 { 1194 {
680 perror ("FATAL: unable to allocate stack for coroutine"); 1195 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
681 _exit (EXIT_FAILURE); 1196 _exit (EXIT_FAILURE);
682 } 1197 }
683 1198
684 stack_start = cctx->sptr; 1199 stack_start = cctx->sptr;
685 stack_size = cctx->ssize; 1200 stack_size = cctx->ssize;
686 } 1201 }
687 1202
688 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1203 #if CORO_USE_VALGRIND
1204 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1205 #endif
1206
689 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1207 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
690 1208
691 return cctx; 1209 return cctx;
692} 1210}
693 1211
694static void 1212static void
… …
696{ 1214{
697 if (!cctx) 1215 if (!cctx)
698 return; 1216 return;
699 1217
700 --cctx_count; 1218 --cctx_count;
1219 coro_destroy (&cctx->cctx);
701 1220
1221 /* coro_transfer creates new, empty cctx's */
1222 if (cctx->sptr)
1223 {
702#if CORO_USE_VALGRIND 1224 #if CORO_USE_VALGRIND
703 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1225 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
704#endif 1226 #endif
705 1227
706#if HAVE_MMAP 1228#if HAVE_MMAP
707 if (cctx->mapped) 1229 if (cctx->flags & CC_MAPPED)
708 munmap (cctx->sptr, cctx->ssize); 1230 munmap (cctx->sptr, cctx->ssize);
709 else 1231 else
710#endif 1232#endif
711 Safefree (cctx->sptr); 1233 Safefree (cctx->sptr);
1234 }
712 1235
713 Safefree (cctx); 1236 Safefree (cctx);
714} 1237}
1238
1239/* wether this cctx should be destructed */
1240#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
715 1241
716static coro_cctx * 1242static coro_cctx *
717cctx_get (pTHX) 1243cctx_get (pTHX)
718{ 1244{
719 while (cctx_first) 1245 while (expect_true (cctx_first))
720 { 1246 {
721 coro_cctx *cctx = cctx_first; 1247 coro_cctx *cctx = cctx_first;
722 cctx_first = cctx->next; 1248 cctx_first = cctx->next;
723 --cctx_idle; 1249 --cctx_idle;
724 1250
725 if (cctx->ssize >= coro_stacksize) 1251 if (expect_true (!CCTX_EXPIRED (cctx)))
726 return cctx; 1252 return cctx;
727 1253
728 cctx_destroy (cctx); 1254 cctx_destroy (cctx);
729 } 1255 }
730 1256
731 PL_op = PL_op->op_next;
732 return cctx_new (); 1257 return cctx_new_run ();
733} 1258}
734 1259
735static void 1260static void
736cctx_put (coro_cctx *cctx) 1261cctx_put (coro_cctx *cctx)
737{ 1262{
1263 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1264
738 /* free another cctx if overlimit */ 1265 /* free another cctx if overlimit */
739 if (cctx_idle >= MAX_IDLE_CCTX) 1266 if (expect_false (cctx_idle >= cctx_max_idle))
740 { 1267 {
741 coro_cctx *first = cctx_first; 1268 coro_cctx *first = cctx_first;
742 cctx_first = first->next; 1269 cctx_first = first->next;
743 --cctx_idle; 1270 --cctx_idle;
744 1271
745 assert (!first->inuse);
746 cctx_destroy (first); 1272 cctx_destroy (first);
747 } 1273 }
748 1274
749 ++cctx_idle; 1275 ++cctx_idle;
750 cctx->next = cctx_first; 1276 cctx->next = cctx_first;
751 cctx_first = cctx; 1277 cctx_first = cctx;
752} 1278}
753 1279
754/** coroutine switching *****************************************************/ 1280/** coroutine switching *****************************************************/
755 1281
756/* never call directly, always through the coro_state_transfer global variable */ 1282static void
1283transfer_check (pTHX_ struct coro *prev, struct coro *next)
1284{
1285 if (expect_true (prev != next))
1286 {
1287 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1288 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1289
1290 if (expect_false (next->flags & CF_RUNNING))
1291 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1292
1293 if (expect_false (next->flags & CF_DESTROYED))
1294 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1295
1296#if !PERL_VERSION_ATLEAST (5,10,0)
1297 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1298 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1299#endif
1300 }
1301}
1302
1303/* always use the TRANSFER macro */
757static void NOINLINE 1304static void NOINLINE
758transfer (pTHX_ struct coro *prev, struct coro *next) 1305transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
759{ 1306{
760 dSTACKLEVEL; 1307 dSTACKLEVEL;
761 1308
762 /* sometimes transfer is only called to set idle_sp */ 1309 /* sometimes transfer is only called to set idle_sp */
763 if (!next) 1310 if (expect_false (!next))
764 { 1311 {
765 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1312 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
766 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1313 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
767 } 1314 }
768 else if (prev != next) 1315 else if (expect_true (prev != next))
769 { 1316 {
770 coro_cctx *prev__cctx; 1317 coro_cctx *prev__cctx;
771 1318
772 if (prev->flags & CF_NEW) 1319 if (expect_false (prev->flags & CF_NEW))
773 { 1320 {
774 /* create a new empty context */ 1321 /* create a new empty/source context */
775 Newz (0, prev->cctx, 1, coro_cctx); 1322 prev->cctx = cctx_new_empty ();
776 prev->cctx->inuse = 1;
777 prev->flags &= ~CF_NEW; 1323 prev->flags &= ~CF_NEW;
778 prev->flags |= CF_RUNNING; 1324 prev->flags |= CF_RUNNING;
779 } 1325 }
780 1326
781 /*TODO: must not croak here */
782 if (!prev->flags & CF_RUNNING)
783 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
784
785 if (next->flags & CF_RUNNING)
786 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
787
788 if (next->flags & CF_DESTROYED)
789 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
790
791 prev->flags &= ~CF_RUNNING; 1327 prev->flags &= ~CF_RUNNING;
792 next->flags |= CF_RUNNING; 1328 next->flags |= CF_RUNNING;
793 1329
794 LOCK; 1330 LOCK;
795 1331
1332 /* first get rid of the old state */
1333 save_perl (aTHX_ prev);
1334
796 if (next->flags & CF_NEW) 1335 if (expect_false (next->flags & CF_NEW))
797 { 1336 {
798 /* need to start coroutine */ 1337 /* need to start coroutine */
799 next->flags &= ~CF_NEW; 1338 next->flags &= ~CF_NEW;
800 /* first get rid of the old state */
801 save_perl (aTHX_ prev);
802 /* setup coroutine call */ 1339 /* setup coroutine call */
803 setup_coro (aTHX_ next); 1340 coro_setup (aTHX_ next);
804 /* need a new stack */
805 assert (!next->cctx);
806 } 1341 }
807 else 1342 else
808 {
809 /* coroutine already started */
810 save_perl (aTHX_ prev);
811 load_perl (aTHX_ next); 1343 load_perl (aTHX_ next);
812 }
813 1344
814 prev__cctx = prev->cctx; 1345 prev__cctx = prev->cctx;
815 1346
816 /* possibly "free" the cctx */ 1347 /* possibly untie and reuse the cctx */
1348 if (expect_true (
817 if (prev__cctx->idle_sp == STACKLEVEL) 1349 prev__cctx->idle_sp == STACKLEVEL
1350 && !(prev__cctx->flags & CC_TRACE)
1351 && !force_cctx
1352 ))
818 { 1353 {
819 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1354 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
820 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1355 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
821 1356
822 prev->cctx = 0; 1357 prev->cctx = 0;
823 1358
1359 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1360 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1361 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1362 if (!next->cctx)
1363 next->cctx = cctx_get (aTHX);
1364
824 cctx_put (prev__cctx); 1365 cctx_put (prev__cctx);
825 prev__cctx->inuse = 0;
826 } 1366 }
827 1367
1368 ++next->usecount;
1369
828 if (!next->cctx) 1370 if (expect_true (!next->cctx))
829 {
830 next->cctx = cctx_get (aTHX); 1371 next->cctx = cctx_get (aTHX);
831 assert (!next->cctx->inuse);
832 next->cctx->inuse = 1;
833 }
834 1372
1373 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1374 transfer_next = next;
1375
835 if (prev__cctx != next->cctx) 1376 if (expect_false (prev__cctx != next->cctx))
836 { 1377 {
837 prev__cctx->top_env = PL_top_env; 1378 prev__cctx->top_env = PL_top_env;
838 PL_top_env = next->cctx->top_env; 1379 PL_top_env = next->cctx->top_env;
839 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1380 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
840 } 1381 }
841 1382
842 free_coro_mortal (aTHX); 1383 transfer_tail (aTHX);
843 UNLOCK;
844 } 1384 }
845} 1385}
846 1386
847struct transfer_args 1387#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
848{
849 struct coro *prev, *next;
850};
851
852#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1388#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
853 1389
854/** high level stuff ********************************************************/ 1390/** high level stuff ********************************************************/
855 1391
856static int 1392static int
857coro_state_destroy (pTHX_ struct coro *coro) 1393coro_state_destroy (pTHX_ struct coro *coro)
… …
874 1410
875 if (coro->mainstack && coro->mainstack != main_mainstack) 1411 if (coro->mainstack && coro->mainstack != main_mainstack)
876 { 1412 {
877 struct coro temp; 1413 struct coro temp;
878 1414
879 assert (!(coro->flags & CF_RUNNING));
880
881 Zero (&temp, 1, struct coro);
882 temp.save = CORO_SAVE_DEF;
883
884 if (coro->flags & CF_RUNNING) 1415 if (coro->flags & CF_RUNNING)
885 croak ("FATAL: tried to destroy currently running coroutine"); 1416 croak ("FATAL: tried to destroy currently running coroutine");
886 1417
887 save_perl (aTHX_ &temp); 1418 save_perl (aTHX_ &temp);
888 load_perl (aTHX_ coro); 1419 load_perl (aTHX_ coro);
889 1420
890 coro_destroy_stacks (aTHX); 1421 coro_destruct (aTHX_ coro);
891 1422
892 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1423 load_perl (aTHX_ &temp);
893 1424
894 coro->mainstack = 0; 1425 coro->slot = 0;
895 } 1426 }
896 1427
897 cctx_destroy (coro->cctx); 1428 cctx_destroy (coro->cctx);
898 SvREFCNT_dec (coro->args); 1429 SvREFCNT_dec (coro->args);
899 1430
1431 if (coro->next) coro->next->prev = coro->prev;
1432 if (coro->prev) coro->prev->next = coro->next;
1433 if (coro == coro_first) coro_first = coro->next;
1434
900 return 1; 1435 return 1;
901} 1436}
902 1437
903static int 1438static int
904coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1439coro_state_free (pTHX_ SV *sv, MAGIC *mg)
905{ 1440{
906 struct coro *coro = (struct coro *)mg->mg_ptr; 1441 struct coro *coro = (struct coro *)mg->mg_ptr;
907 mg->mg_ptr = 0; 1442 mg->mg_ptr = 0;
1443
1444 coro->hv = 0;
908 1445
909 if (--coro->refcnt < 0) 1446 if (--coro->refcnt < 0)
910 { 1447 {
911 coro_state_destroy (aTHX_ coro); 1448 coro_state_destroy (aTHX_ coro);
912 Safefree (coro); 1449 Safefree (coro);
… …
934#else 1471#else
935# define MGf_DUP 0 1472# define MGf_DUP 0
936#endif 1473#endif
937}; 1474};
938 1475
939static struct coro *
940SvSTATE_ (pTHX_ SV *coro)
941{
942 HV *stash;
943 MAGIC *mg;
944
945 if (SvROK (coro))
946 coro = SvRV (coro);
947
948 stash = SvSTASH (coro);
949 if (stash != coro_stash && stash != coro_state_stash)
950 {
951 /* very slow, but rare, check */
952 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
953 croak ("Coro::State object required");
954 }
955
956 mg = CORO_MAGIC (coro);
957 return (struct coro *)mg->mg_ptr;
958}
959
960#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
961
962static void 1476static void
963prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1477prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
964{ 1478{
965 ta->prev = SvSTATE (prev_sv); 1479 ta->prev = SvSTATE (prev_sv);
966 ta->next = SvSTATE (next_sv); 1480 ta->next = SvSTATE (next_sv);
1481 TRANSFER_CHECK (*ta);
967} 1482}
968 1483
969static void 1484static void
970api_transfer (SV *prev_sv, SV *next_sv) 1485api_transfer (SV *prev_sv, SV *next_sv)
971{ 1486{
972 dTHX; 1487 dTHX;
973 struct transfer_args ta; 1488 struct transfer_args ta;
974 1489
975 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
976 TRANSFER (ta); 1491 TRANSFER (ta, 1);
977}
978
979static int
980api_save (SV *coro_sv, int new_save)
981{
982 dTHX;
983 struct coro *coro = SvSTATE (coro_sv);
984 int old_save = coro->save;
985
986 if (new_save >= 0)
987 coro->save = new_save;
988
989 return old_save;
990} 1492}
991 1493
992/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
993 1495
994static void 1496static void
… …
996{ 1498{
997 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
998} 1500}
999 1501
1000static SV * 1502static SV *
1001coro_deq (pTHX_ int min_prio) 1503coro_deq (pTHX)
1002{ 1504{
1003 int prio = PRIO_MAX - PRIO_MIN; 1505 int prio;
1004 1506
1005 min_prio -= PRIO_MIN;
1006 if (min_prio < 0)
1007 min_prio = 0;
1008
1009 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1010 if (AvFILLp (coro_ready [prio]) >= 0) 1508 if (AvFILLp (coro_ready [prio]) >= 0)
1011 return av_shift (coro_ready [prio]); 1509 return av_shift (coro_ready [prio]);
1012 1510
1013 return 0; 1511 return 0;
1014} 1512}
… …
1016static int 1514static int
1017api_ready (SV *coro_sv) 1515api_ready (SV *coro_sv)
1018{ 1516{
1019 dTHX; 1517 dTHX;
1020 struct coro *coro; 1518 struct coro *coro;
1519 SV *sv_hook;
1520 void (*xs_hook)(void);
1021 1521
1022 if (SvROK (coro_sv)) 1522 if (SvROK (coro_sv))
1023 coro_sv = SvRV (coro_sv); 1523 coro_sv = SvRV (coro_sv);
1024 1524
1025 coro = SvSTATE (coro_sv); 1525 coro = SvSTATE (coro_sv);
… …
1028 return 0; 1528 return 0;
1029 1529
1030 coro->flags |= CF_READY; 1530 coro->flags |= CF_READY;
1031 1531
1032 LOCK; 1532 LOCK;
1533
1534 sv_hook = coro_nready ? 0 : coro_readyhook;
1535 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1536
1033 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1537 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1034 ++coro_nready; 1538 ++coro_nready;
1539
1035 UNLOCK; 1540 UNLOCK;
1541
1542 if (sv_hook)
1543 {
1544 dSP;
1545
1546 ENTER;
1547 SAVETMPS;
1548
1549 PUSHMARK (SP);
1550 PUTBACK;
1551 call_sv (sv_hook, G_DISCARD);
1552 SPAGAIN;
1553
1554 FREETMPS;
1555 LEAVE;
1556 }
1557
1558 if (xs_hook)
1559 xs_hook ();
1036 1560
1037 return 1; 1561 return 1;
1038} 1562}
1039 1563
1040static int 1564static int
1041api_is_ready (SV *coro_sv) 1565api_is_ready (SV *coro_sv)
1042{ 1566{
1043 dTHX; 1567 dTHX;
1568
1044 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1045} 1570}
1046 1571
1047static void 1572INLINE void
1048prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct transfer_args *ta)
1049{ 1574{
1050 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1051 1576
1052 for (;;) 1577 for (;;)
1053 { 1578 {
1054 LOCK; 1579 LOCK;
1055 next_sv = coro_deq (aTHX_ PRIO_MIN); 1580 next_sv = coro_deq (aTHX);
1056 1581
1057 /* nothing to schedule: call the idle handler */ 1582 /* nothing to schedule: call the idle handler */
1058 if (!next_sv) 1583 if (expect_false (!next_sv))
1059 { 1584 {
1060 dSP; 1585 dSP;
1061 UNLOCK; 1586 UNLOCK;
1062 1587
1063 ENTER; 1588 ENTER;
1064 SAVETMPS; 1589 SAVETMPS;
1065 1590
1066 PUSHMARK (SP); 1591 PUSHMARK (SP);
1067 PUTBACK; 1592 PUTBACK;
1068 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1593 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1594 SPAGAIN;
1069 1595
1070 FREETMPS; 1596 FREETMPS;
1071 LEAVE; 1597 LEAVE;
1072 continue; 1598 continue;
1073 } 1599 }
1074 1600
1075 ta->next = SvSTATE (next_sv); 1601 ta->next = SvSTATE (next_sv);
1076 1602
1077 /* cannot transfer to destroyed coros, skip and look for next */ 1603 /* cannot transfer to destroyed coros, skip and look for next */
1078 if (ta->next->flags & CF_DESTROYED) 1604 if (expect_false (ta->next->flags & CF_DESTROYED))
1079 { 1605 {
1080 UNLOCK; 1606 UNLOCK;
1081 SvREFCNT_dec (next_sv); 1607 SvREFCNT_dec (next_sv);
1082 /* coro_nready is already taken care of by destroy */ 1608 /* coro_nready has already been taken care of by destroy */
1083 continue; 1609 continue;
1084 } 1610 }
1085 1611
1086 --coro_nready; 1612 --coro_nready;
1087 UNLOCK; 1613 UNLOCK;
1088 break; 1614 break;
1089 } 1615 }
1090 1616
1091 /* free this only after the transfer */ 1617 /* free this only after the transfer */
1092 prev_sv = SvRV (coro_current); 1618 prev_sv = SvRV (coro_current);
1619 ta->prev = SvSTATE (prev_sv);
1620 TRANSFER_CHECK (*ta);
1621 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1622 ta->next->flags &= ~CF_READY;
1093 SvRV_set (coro_current, next_sv); 1623 SvRV_set (coro_current, next_sv);
1094 ta->prev = SvSTATE (prev_sv);
1095
1096 assert (ta->next->flags & CF_READY);
1097 ta->next->flags &= ~CF_READY;
1098 1624
1099 LOCK; 1625 LOCK;
1100 free_coro_mortal (aTHX); 1626 free_coro_mortal (aTHX);
1101 coro_mortal = prev_sv; 1627 coro_mortal = prev_sv;
1102 UNLOCK; 1628 UNLOCK;
1103} 1629}
1104 1630
1105static void 1631INLINE void
1106prepare_cede (pTHX_ struct transfer_args *ta) 1632prepare_cede (pTHX_ struct transfer_args *ta)
1107{ 1633{
1108 api_ready (coro_current); 1634 api_ready (coro_current);
1109 prepare_schedule (aTHX_ ta); 1635 prepare_schedule (aTHX_ ta);
1110} 1636}
… …
1128{ 1654{
1129 dTHX; 1655 dTHX;
1130 struct transfer_args ta; 1656 struct transfer_args ta;
1131 1657
1132 prepare_schedule (aTHX_ &ta); 1658 prepare_schedule (aTHX_ &ta);
1133 TRANSFER (ta); 1659 TRANSFER (ta, 1);
1134} 1660}
1135 1661
1136static int 1662static int
1137api_cede (void) 1663api_cede (void)
1138{ 1664{
1139 dTHX; 1665 dTHX;
1140 struct transfer_args ta; 1666 struct transfer_args ta;
1141 1667
1142 prepare_cede (aTHX_ &ta); 1668 prepare_cede (aTHX_ &ta);
1143 1669
1144 if (ta.prev != ta.next) 1670 if (expect_true (ta.prev != ta.next))
1145 { 1671 {
1146 TRANSFER (ta); 1672 TRANSFER (ta, 1);
1147 return 1; 1673 return 1;
1148 } 1674 }
1149 else 1675 else
1150 return 0; 1676 return 0;
1151} 1677}
… …
1156 dTHX; 1682 dTHX;
1157 struct transfer_args ta; 1683 struct transfer_args ta;
1158 1684
1159 if (prepare_cede_notself (aTHX_ &ta)) 1685 if (prepare_cede_notself (aTHX_ &ta))
1160 { 1686 {
1161 TRANSFER (ta); 1687 TRANSFER (ta, 1);
1162 return 1; 1688 return 1;
1163 } 1689 }
1164 else 1690 else
1165 return 0; 1691 return 0;
1166} 1692}
1167 1693
1694static void
1695api_trace (SV *coro_sv, int flags)
1696{
1697 dTHX;
1698 struct coro *coro = SvSTATE (coro_sv);
1699
1700 if (flags & CC_TRACE)
1701 {
1702 if (!coro->cctx)
1703 coro->cctx = cctx_new_run ();
1704 else if (!(coro->cctx->flags & CC_TRACE))
1705 croak ("cannot enable tracing on coroutine with custom stack");
1706
1707 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1708 }
1709 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1710 {
1711 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1712
1713 if (coro->flags & CF_RUNNING)
1714 PL_runops = RUNOPS_DEFAULT;
1715 else
1716 coro->slot->runops = RUNOPS_DEFAULT;
1717 }
1718}
1719
1720#if 0
1721static int
1722coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1723{
1724 AV *padlist;
1725 AV *av = (AV *)mg->mg_obj;
1726
1727 abort ();
1728
1729 return 0;
1730}
1731
1732static MGVTBL coro_gensub_vtbl = {
1733 0, 0, 0, 0,
1734 coro_gensub_free
1735};
1736#endif
1737
1738/*****************************************************************************/
1739/* PerlIO::cede */
1740
1741typedef struct
1742{
1743 PerlIOBuf base;
1744 NV next, every;
1745} PerlIOCede;
1746
1747static IV
1748PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1749{
1750 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1751
1752 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1753 self->next = nvtime () + self->every;
1754
1755 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1756}
1757
1758static SV *
1759PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1760{
1761 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1762
1763 return newSVnv (self->every);
1764}
1765
1766static IV
1767PerlIOCede_flush (pTHX_ PerlIO *f)
1768{
1769 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1770 double now = nvtime ();
1771
1772 if (now >= self->next)
1773 {
1774 api_cede ();
1775 self->next = now + self->every;
1776 }
1777
1778 return PerlIOBuf_flush (aTHX_ f);
1779}
1780
1781static PerlIO_funcs PerlIO_cede =
1782{
1783 sizeof(PerlIO_funcs),
1784 "cede",
1785 sizeof(PerlIOCede),
1786 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1787 PerlIOCede_pushed,
1788 PerlIOBuf_popped,
1789 PerlIOBuf_open,
1790 PerlIOBase_binmode,
1791 PerlIOCede_getarg,
1792 PerlIOBase_fileno,
1793 PerlIOBuf_dup,
1794 PerlIOBuf_read,
1795 PerlIOBuf_unread,
1796 PerlIOBuf_write,
1797 PerlIOBuf_seek,
1798 PerlIOBuf_tell,
1799 PerlIOBuf_close,
1800 PerlIOCede_flush,
1801 PerlIOBuf_fill,
1802 PerlIOBase_eof,
1803 PerlIOBase_error,
1804 PerlIOBase_clearerr,
1805 PerlIOBase_setlinebuf,
1806 PerlIOBuf_get_base,
1807 PerlIOBuf_bufsiz,
1808 PerlIOBuf_get_ptr,
1809 PerlIOBuf_get_cnt,
1810 PerlIOBuf_set_ptrcnt,
1811};
1812
1813/*****************************************************************************/
1814
1815static const CV *ssl_cv; /* for quick consistency check */
1816
1817static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1818static SV *ssl_arg0;
1819static SV *ssl_arg1;
1820
1821/* this restores the stack in the case we patched the entersub, to */
1822/* recreate the stack frame as perl will on following calls */
1823/* since entersub cleared the stack */
1824static OP *
1825pp_restore (pTHX)
1826{
1827 dSP;
1828
1829 PUSHMARK (SP);
1830
1831 EXTEND (SP, 3);
1832 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
1833 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1834 PUSHs ((SV *)CvGV (ssl_cv));
1835
1836 RETURNOP (ssl_restore.op_first);
1837}
1838
1839/* declare prototype */
1840XS(XS_Coro__State__set_stacklevel);
1841
1842static OP *
1843pp_set_stacklevel (pTHX)
1844{
1845 dSP;
1846 struct transfer_args ta;
1847 SV **arg = PL_stack_base + TOPMARK + 1;
1848 int items = SP - arg; /* args without function object */
1849
1850 /* do a quick consistency check on the "function" object, and if it isn't */
1851 /* for us, divert to the real entersub */
1852 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1853 return PL_ppaddr[OP_ENTERSUB](aTHX);
1854
1855 /* pop args */
1856 SP = PL_stack_base + POPMARK;
1857
1858 if (!(PL_op->op_flags & OPf_STACKED))
1859 {
1860 /* ampersand-form of call, use @_ instead of stack */
1861 AV *av = GvAV (PL_defgv);
1862 arg = AvARRAY (av);
1863 items = AvFILLp (av) + 1;
1864 }
1865
1866 PUTBACK;
1867 switch (PL_op->op_private & 7)
1868 {
1869 case 0:
1870 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1871 break;
1872
1873 case 1:
1874 if (items != 2)
1875 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1876
1877 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1878 break;
1879
1880 case 2:
1881 prepare_schedule (aTHX_ &ta);
1882 break;
1883
1884 case 3:
1885 prepare_cede (aTHX_ &ta);
1886 break;
1887
1888 case 4:
1889 if (!prepare_cede_notself (aTHX_ &ta))
1890 RETURN;
1891
1892 break;
1893 }
1894
1895 TRANSFER (ta, 0);
1896 SPAGAIN;
1897
1898skip:
1899
1900 RETURN;
1901}
1902
1168MODULE = Coro::State PACKAGE = Coro::State 1903MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1169 1904
1170PROTOTYPES: DISABLE 1905PROTOTYPES: DISABLE
1171 1906
1172BOOT: 1907# these not obviously related functions are all rolled into the same xs
1173{ 1908# function to increase chances that they all will call transfer with the same
1174#ifdef USE_ITHREADS 1909# stack offset
1175 MUTEX_INIT (&coro_mutex);
1176#endif
1177 BOOT_PAGESIZE;
1178
1179 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1180
1181 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1182 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1183 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1184 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1185 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1186 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1187 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1188
1189 main_mainstack = PL_mainstack;
1190 main_top_env = PL_top_env;
1191
1192 while (main_top_env->je_prev)
1193 main_top_env = main_top_env->je_prev;
1194
1195 coroapi.ver = CORO_API_VERSION;
1196 coroapi.transfer = api_transfer;
1197
1198 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1199}
1200
1201SV *
1202new (char *klass, ...)
1203 CODE:
1204{
1205 struct coro *coro;
1206 HV *hv;
1207 int i;
1208
1209 Newz (0, coro, 1, struct coro);
1210 coro->args = newAV ();
1211 coro->save = CORO_SAVE_DEF;
1212 coro->flags = CF_NEW;
1213
1214 hv = newHV ();
1215 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1216 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1217
1218 for (i = 1; i < items; i++)
1219 av_push (coro->args, newSVsv (ST (i)));
1220}
1221 OUTPUT:
1222 RETVAL
1223
1224int
1225save (SV *coro, int new_save = -1)
1226 CODE:
1227 RETVAL = api_save (coro, new_save);
1228 OUTPUT:
1229 RETVAL
1230
1231int
1232save_also (SV *coro_sv, int save_also)
1233 CODE:
1234{
1235 struct coro *coro = SvSTATE (coro_sv);
1236 RETVAL = coro->save;
1237 coro->save |= save_also;
1238}
1239 OUTPUT:
1240 RETVAL
1241
1242void 1910void
1243_set_stacklevel (...) 1911_set_stacklevel (...)
1244 ALIAS: 1912 ALIAS:
1245 Coro::State::transfer = 1 1913 Coro::State::transfer = 1
1246 Coro::schedule = 2 1914 Coro::schedule = 2
1247 Coro::cede = 3 1915 Coro::cede = 3
1248 Coro::cede_notself = 4 1916 Coro::cede_notself = 4
1249 CODE: 1917 CODE:
1250{ 1918{
1251 struct transfer_args ta; 1919 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1252 1920
1253 switch (ix) 1921 /* we patch the op, and then re-run the whole call */
1922 /* we have to put some dummy argument on the stack for this to work */
1923 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1924 ssl_restore.op_next = (OP *)&ssl_restore;
1925 ssl_restore.op_type = OP_NULL;
1926 ssl_restore.op_ppaddr = pp_restore;
1927 ssl_restore.op_first = PL_op;
1928
1929 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1930 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1931
1932 PL_op->op_ppaddr = pp_set_stacklevel;
1933 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1934
1935 PL_op = (OP *)&ssl_restore;
1936}
1937
1938BOOT:
1939{
1940#ifdef USE_ITHREADS
1941 MUTEX_INIT (&coro_lock);
1942# if CORO_PTHREAD
1943 coro_thx = PERL_GET_CONTEXT;
1944# endif
1945#endif
1946 BOOT_PAGESIZE;
1947
1948 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
1949
1950 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1951 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1952
1953 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1954 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1955 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1956
1957 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1958 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1959 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1960
1961 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1962
1963 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1964 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1965 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1966 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1967
1968 main_mainstack = PL_mainstack;
1969 main_top_env = PL_top_env;
1970
1971 while (main_top_env->je_prev)
1972 main_top_env = main_top_env->je_prev;
1973
1974 coroapi.ver = CORO_API_VERSION;
1975 coroapi.rev = CORO_API_REVISION;
1976 coroapi.transfer = api_transfer;
1977
1254 { 1978 {
1255 case 0: 1979 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1256 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1257 ta.next = 0;
1258 break;
1259 1980
1260 case 1: 1981 if (!svp) croak ("Time::HiRes is required");
1261 if (items != 2) 1982 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1262 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1263 1983
1264 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1984 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1265 break;
1266
1267 case 2:
1268 prepare_schedule (aTHX_ &ta);
1269 break;
1270
1271 case 3:
1272 prepare_cede (aTHX_ &ta);
1273 break;
1274
1275 case 4:
1276 if (!prepare_cede_notself (aTHX_ &ta))
1277 XSRETURN_EMPTY;
1278
1279 break;
1280 } 1985 }
1281 1986
1282 BARRIER; 1987 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1283 TRANSFER (ta);
1284
1285 if (GIMME_V != G_VOID && ta.next != ta.prev)
1286 XSRETURN_YES;
1287} 1988}
1989
1990SV *
1991new (char *klass, ...)
1992 CODE:
1993{
1994 struct coro *coro;
1995 MAGIC *mg;
1996 HV *hv;
1997 int i;
1998
1999 Newz (0, coro, 1, struct coro);
2000 coro->args = newAV ();
2001 coro->flags = CF_NEW;
2002
2003 if (coro_first) coro_first->prev = coro;
2004 coro->next = coro_first;
2005 coro_first = coro;
2006
2007 coro->hv = hv = newHV ();
2008 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2009 mg->mg_flags |= MGf_DUP;
2010 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2011
2012 av_extend (coro->args, items - 1);
2013 for (i = 1; i < items; i++)
2014 av_push (coro->args, newSVsv (ST (i)));
2015}
2016 OUTPUT:
2017 RETVAL
1288 2018
1289bool 2019bool
1290_destroy (SV *coro_sv) 2020_destroy (SV *coro_sv)
1291 CODE: 2021 CODE:
1292 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2022 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1293 OUTPUT: 2023 OUTPUT:
1294 RETVAL 2024 RETVAL
1295 2025
1296void 2026void
1297_exit (code) 2027_exit (int code)
1298 int code
1299 PROTOTYPE: $ 2028 PROTOTYPE: $
1300 CODE: 2029 CODE:
1301 _exit (code); 2030 _exit (code);
1302 2031
1303int 2032int
1304cctx_stacksize (int new_stacksize = 0) 2033cctx_stacksize (int new_stacksize = 0)
1305 CODE: 2034 CODE:
1306 RETVAL = coro_stacksize; 2035 RETVAL = cctx_stacksize;
1307 if (new_stacksize) 2036 if (new_stacksize)
2037 {
1308 coro_stacksize = new_stacksize; 2038 cctx_stacksize = new_stacksize;
2039 ++cctx_gen;
2040 }
2041 OUTPUT:
2042 RETVAL
2043
2044int
2045cctx_max_idle (int max_idle = 0)
2046 CODE:
2047 RETVAL = cctx_max_idle;
2048 if (max_idle > 1)
2049 cctx_max_idle = max_idle;
1309 OUTPUT: 2050 OUTPUT:
1310 RETVAL 2051 RETVAL
1311 2052
1312int 2053int
1313cctx_count () 2054cctx_count ()
… …
1321 CODE: 2062 CODE:
1322 RETVAL = cctx_idle; 2063 RETVAL = cctx_idle;
1323 OUTPUT: 2064 OUTPUT:
1324 RETVAL 2065 RETVAL
1325 2066
2067void
2068list ()
2069 PPCODE:
2070{
2071 struct coro *coro;
2072 for (coro = coro_first; coro; coro = coro->next)
2073 if (coro->hv)
2074 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2075}
2076
2077void
2078call (Coro::State coro, SV *coderef)
2079 ALIAS:
2080 eval = 1
2081 CODE:
2082{
2083 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2084 {
2085 struct coro temp;
2086
2087 if (!(coro->flags & CF_RUNNING))
2088 {
2089 PUTBACK;
2090 save_perl (aTHX_ &temp);
2091 load_perl (aTHX_ coro);
2092 }
2093
2094 {
2095 dSP;
2096 ENTER;
2097 SAVETMPS;
2098 PUTBACK;
2099 PUSHSTACK;
2100 PUSHMARK (SP);
2101
2102 if (ix)
2103 eval_sv (coderef, 0);
2104 else
2105 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2106
2107 POPSTACK;
2108 SPAGAIN;
2109 FREETMPS;
2110 LEAVE;
2111 PUTBACK;
2112 }
2113
2114 if (!(coro->flags & CF_RUNNING))
2115 {
2116 save_perl (aTHX_ coro);
2117 load_perl (aTHX_ &temp);
2118 SPAGAIN;
2119 }
2120 }
2121}
2122
2123SV *
2124is_ready (Coro::State coro)
2125 PROTOTYPE: $
2126 ALIAS:
2127 is_ready = CF_READY
2128 is_running = CF_RUNNING
2129 is_new = CF_NEW
2130 is_destroyed = CF_DESTROYED
2131 CODE:
2132 RETVAL = boolSV (coro->flags & ix);
2133 OUTPUT:
2134 RETVAL
2135
2136void
2137throw (Coro::State self, SV *throw = &PL_sv_undef)
2138 PROTOTYPE: $;$
2139 CODE:
2140 SvREFCNT_dec (self->throw);
2141 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2142
2143void
2144api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2145
2146SV *
2147has_cctx (Coro::State coro)
2148 PROTOTYPE: $
2149 CODE:
2150 RETVAL = boolSV (!!coro->cctx);
2151 OUTPUT:
2152 RETVAL
2153
2154int
2155is_traced (Coro::State coro)
2156 PROTOTYPE: $
2157 CODE:
2158 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2159 OUTPUT:
2160 RETVAL
2161
2162UV
2163rss (Coro::State coro)
2164 PROTOTYPE: $
2165 ALIAS:
2166 usecount = 1
2167 CODE:
2168 switch (ix)
2169 {
2170 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2171 case 1: RETVAL = coro->usecount; break;
2172 }
2173 OUTPUT:
2174 RETVAL
2175
2176void
2177force_cctx ()
2178 CODE:
2179 struct coro *coro = SvSTATE (coro_current);
2180 coro->cctx->idle_sp = 0;
2181
2182void
2183swap_defsv (Coro::State self)
2184 PROTOTYPE: $
2185 ALIAS:
2186 swap_defav = 1
2187 CODE:
2188 if (!self->slot)
2189 croak ("cannot swap state with coroutine that has no saved state");
2190 else
2191 {
2192 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2193 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2194
2195 SV *tmp = *src; *src = *dst; *dst = tmp;
2196 }
2197
1326MODULE = Coro::State PACKAGE = Coro 2198MODULE = Coro::State PACKAGE = Coro
1327 2199
1328BOOT: 2200BOOT:
1329{ 2201{
1330 int i; 2202 int i;
1331 2203
2204 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2205 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2206 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2207
2208 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2209 SvREADONLY_on (coro_current);
2210
1332 coro_stash = gv_stashpv ("Coro", TRUE); 2211 coro_stash = gv_stashpv ("Coro", TRUE);
1333 2212
1334 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2213 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1335 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2214 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1336 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2215 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1337 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2216 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1338 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2217 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1339 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2218 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1340 2219
1341 coro_current = get_sv ("Coro::current", FALSE);
1342 SvREADONLY_on (coro_current);
1343
1344 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2220 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1345 coro_ready[i] = newAV (); 2221 coro_ready[i] = newAV ();
1346 2222
1347 { 2223 {
1348 SV *sv = perl_get_sv("Coro::API", 1); 2224 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1349 2225
1350 coroapi.schedule = api_schedule; 2226 coroapi.schedule = api_schedule;
1351 coroapi.save = api_save;
1352 coroapi.cede = api_cede; 2227 coroapi.cede = api_cede;
1353 coroapi.cede_notself = api_cede_notself; 2228 coroapi.cede_notself = api_cede_notself;
1354 coroapi.ready = api_ready; 2229 coroapi.ready = api_ready;
1355 coroapi.is_ready = api_is_ready; 2230 coroapi.is_ready = api_is_ready;
1356 coroapi.nready = &coro_nready; 2231 coroapi.nready = &coro_nready;
… …
1365void 2240void
1366_set_current (SV *current) 2241_set_current (SV *current)
1367 PROTOTYPE: $ 2242 PROTOTYPE: $
1368 CODE: 2243 CODE:
1369 SvREFCNT_dec (SvRV (coro_current)); 2244 SvREFCNT_dec (SvRV (coro_current));
1370 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2245 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2246
2247void
2248_set_readyhook (SV *hook)
2249 PROTOTYPE: $
2250 CODE:
2251 LOCK;
2252 SvREFCNT_dec (coro_readyhook);
2253 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2254 UNLOCK;
1371 2255
1372int 2256int
1373prio (Coro::State coro, int newprio = 0) 2257prio (Coro::State coro, int newprio = 0)
1374 ALIAS: 2258 ALIAS:
1375 nice = 1 2259 nice = 1
… …
1397 CODE: 2281 CODE:
1398 RETVAL = boolSV (api_ready (self)); 2282 RETVAL = boolSV (api_ready (self));
1399 OUTPUT: 2283 OUTPUT:
1400 RETVAL 2284 RETVAL
1401 2285
1402SV *
1403is_ready (SV *self)
1404 PROTOTYPE: $
1405 CODE:
1406 RETVAL = boolSV (api_is_ready (self));
1407 OUTPUT:
1408 RETVAL
1409
1410int 2286int
1411nready (...) 2287nready (...)
1412 PROTOTYPE: 2288 PROTOTYPE:
1413 CODE: 2289 CODE:
1414 RETVAL = coro_nready; 2290 RETVAL = coro_nready;
1415 OUTPUT: 2291 OUTPUT:
1416 RETVAL 2292 RETVAL
1417 2293
2294# for async_pool speedup
2295void
2296_pool_1 (SV *cb)
2297 CODE:
2298{
2299 struct coro *coro = SvSTATE (coro_current);
2300 HV *hv = (HV *)SvRV (coro_current);
2301 AV *defav = GvAV (PL_defgv);
2302 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2303 AV *invoke_av;
2304 int i, len;
2305
2306 if (!invoke)
2307 {
2308 SV *old = PL_diehook;
2309 PL_diehook = 0;
2310 SvREFCNT_dec (old);
2311 croak ("\3async_pool terminate\2\n");
2312 }
2313
2314 SvREFCNT_dec (coro->saved_deffh);
2315 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2316
2317 hv_store (hv, "desc", sizeof ("desc") - 1,
2318 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2319
2320 invoke_av = (AV *)SvRV (invoke);
2321 len = av_len (invoke_av);
2322
2323 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2324
2325 if (len > 0)
2326 {
2327 av_fill (defav, len - 1);
2328 for (i = 0; i < len; ++i)
2329 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2330 }
2331
2332 SvREFCNT_dec (invoke);
2333}
2334
2335void
2336_pool_2 (SV *cb)
2337 CODE:
2338{
2339 struct coro *coro = SvSTATE (coro_current);
2340
2341 sv_setsv (cb, &PL_sv_undef);
2342
2343 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2344 coro->saved_deffh = 0;
2345
2346 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2347 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2348 {
2349 SV *old = PL_diehook;
2350 PL_diehook = 0;
2351 SvREFCNT_dec (old);
2352 croak ("\3async_pool terminate\2\n");
2353 }
2354
2355 av_clear (GvAV (PL_defgv));
2356 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2357 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2358
2359 coro->prio = 0;
2360
2361 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2362 api_trace (coro_current, 0);
2363
2364 av_push (av_async_pool, newSVsv (coro_current));
2365}
2366
2367#if 0
2368
2369void
2370_generator_call (...)
2371 PROTOTYPE: @
2372 PPCODE:
2373 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2374 xxxx
2375 abort ();
2376
2377SV *
2378gensub (SV *sub, ...)
2379 PROTOTYPE: &;@
2380 CODE:
2381{
2382 struct coro *coro;
2383 MAGIC *mg;
2384 CV *xcv;
2385 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2386 int i;
2387
2388 CvGV (ncv) = CvGV (cv);
2389 CvFILE (ncv) = CvFILE (cv);
2390
2391 Newz (0, coro, 1, struct coro);
2392 coro->args = newAV ();
2393 coro->flags = CF_NEW;
2394
2395 av_extend (coro->args, items - 1);
2396 for (i = 1; i < items; i++)
2397 av_push (coro->args, newSVsv (ST (i)));
2398
2399 CvISXSUB_on (ncv);
2400 CvXSUBANY (ncv).any_ptr = (void *)coro;
2401
2402 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2403
2404 CvXSUB (ncv) = CvXSUB (xcv);
2405 CvANON_on (ncv);
2406
2407 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2408 RETVAL = newRV_noinc ((SV *)ncv);
2409}
2410 OUTPUT:
2411 RETVAL
2412
2413#endif
2414
2415
1418MODULE = Coro::State PACKAGE = Coro::AIO 2416MODULE = Coro::State PACKAGE = Coro::AIO
1419 2417
1420SV * 2418void
1421_get_state () 2419_get_state (SV *self)
1422 CODE: 2420 PPCODE:
1423{ 2421{
1424 struct io_state *data; 2422 AV *defav = GvAV (PL_defgv);
1425 2423 AV *av = newAV ();
2424 int i;
1426 RETVAL = newSV (sizeof (struct io_state)); 2425 SV *data_sv = newSV (sizeof (struct io_state));
1427 data = (struct io_state *)SvPVX (RETVAL); 2426 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1428 SvCUR_set (RETVAL, sizeof (struct io_state)); 2427 SvCUR_set (data_sv, sizeof (struct io_state));
1429 SvPOK_only (RETVAL); 2428 SvPOK_only (data_sv);
1430 2429
1431 data->errorno = errno; 2430 data->errorno = errno;
1432 data->laststype = PL_laststype; 2431 data->laststype = PL_laststype;
1433 data->laststatval = PL_laststatval; 2432 data->laststatval = PL_laststatval;
1434 data->statcache = PL_statcache; 2433 data->statcache = PL_statcache;
2434
2435 av_extend (av, AvFILLp (defav) + 1 + 1);
2436
2437 for (i = 0; i <= AvFILLp (defav); ++i)
2438 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2439
2440 av_push (av, data_sv);
2441
2442 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2443
2444 api_ready (self);
1435} 2445}
1436 OUTPUT:
1437 RETVAL
1438 2446
1439void 2447void
1440_set_state (char *data_) 2448_set_state (SV *state)
1441 PROTOTYPE: $ 2449 PROTOTYPE: $
1442 CODE: 2450 PPCODE:
1443{ 2451{
1444 struct io_state *data = (void *)data_; 2452 AV *av = (AV *)SvRV (state);
2453 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2454 int i;
1445 2455
1446 errno = data->errorno; 2456 errno = data->errorno;
1447 PL_laststype = data->laststype; 2457 PL_laststype = data->laststype;
1448 PL_laststatval = data->laststatval; 2458 PL_laststatval = data->laststatval;
1449 PL_statcache = data->statcache; 2459 PL_statcache = data->statcache;
1450}
1451 2460
2461 EXTEND (SP, AvFILLp (av));
2462 for (i = 0; i < AvFILLp (av); ++i)
2463 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2464}
2465
2466
2467MODULE = Coro::State PACKAGE = Coro::AnyEvent
2468
2469BOOT:
2470 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2471
2472SV *
2473_schedule (...)
2474 PROTOTYPE: @
2475 CODE:
2476{
2477 static int incede;
2478
2479 api_cede_notself ();
2480
2481 ++incede;
2482 while (coro_nready >= incede && api_cede ())
2483 ;
2484
2485 sv_setsv (sv_activity, &PL_sv_undef);
2486 if (coro_nready >= incede)
2487 {
2488 PUSHMARK (SP);
2489 PUTBACK;
2490 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2491 SPAGAIN;
2492 }
2493
2494 --incede;
2495}
2496
2497
2498MODULE = Coro::State PACKAGE = PerlIO::cede
2499
2500BOOT:
2501 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2502

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