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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 1.259 by root, Mon Nov 10 00:02:29 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
… …
41#else 52#else
42# define REGISTER_STACK(cctx,start,end) 53# define REGISTER_STACK(cctx,start,end)
43#endif 54#endif
44 55
45/* the maximum number of idle cctx that will be pooled */ 56/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 57static int cctx_max_idle = 4;
47 58
48#define PERL_VERSION_ATLEAST(a,b,c) \ 59#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 60 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 61 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 62 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 81# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
72# endif 83# endif
73#endif 84#endif
74 85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
75/* 5.8.7 */ 104/* 5.8.7 */
76#ifndef SvRV_set 105#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 107#endif
79 108
… …
88/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 120#endif
92 121
93/* The next macro should declare a variable stacklevel that contains and approximation 122/* 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 123 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
98 126
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 128
101#if __GNUC__ >= 3 129#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 133#else
105# define attribute(x) 134# define attribute(x)
106# define BARRIER 135# define BARRIER
136# define expect(expr,value) (expr)
107#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
108 141
109#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
110 143
111#include "CoroAPI.h" 144#include "CoroAPI.h"
112 145
113#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
114static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
117#else 155#else
156
118# define LOCK (void)0 157# define LOCK (void)0
119# define UNLOCK (void)0 158# define UNLOCK (void)0
159
120#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
121 166
122/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
123struct io_state 168struct io_state
124{ 169{
170 AV *res;
125 int errorno; 171 int errorno;
126 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
127 int laststatval; 173 int laststatval;
128 Stat_t statcache; 174 Stat_t statcache;
129}; 175};
130 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
131static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 183static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile char next_has_throw; /* speedup flag for next->throw check */
187
188static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook;
191static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */
193
194/* async_pool helper stuff */
195static SV *sv_pool_rss;
196static SV *sv_pool_size;
197static AV *av_async_pool;
198
199/* Coro::AnyEvent */
200static SV *sv_activity;
137 201
138static struct coro_cctx *cctx_first; 202static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 203static int cctx_count, cctx_idle;
204
205enum {
206 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */
211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
212};
140 213
141/* this is a structure representing a c-level coroutine */ 214/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 215typedef struct coro_cctx {
143 struct coro_cctx *next; 216 struct coro_cctx *next;
144 217
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 223 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 */ 224 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 225 JMPENV *top_env;
153 coro_context cctx; 226 coro_context cctx;
154 227
228 U32 gen;
155#if CORO_USE_VALGRIND 229#if CORO_USE_VALGRIND
156 int valgrind_id; 230 int valgrind_id;
157#endif 231#endif
158 char inuse, mapped; 232 unsigned char flags;
159} coro_cctx; 233} coro_cctx;
160 234
161enum { 235enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 236 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 237 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 238 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 239 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 240};
167 241
242/* the structure where most of the perl state is stored, overlaid on the cxstack */
243typedef struct {
244 SV *defsv;
245 AV *defav;
246 SV *errsv;
247 SV *irsgv;
248#define VAR(name,type) type name;
249# include "state.h"
250#undef VAR
251} perl_slots;
252
253#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
254
168/* this is a structure representing a perl-level coroutine */ 255/* this is a structure representing a perl-level coroutine */
169struct coro { 256struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 257 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 258 coro_cctx *cctx;
172 259
260 /* process data */
261 AV *mainstack;
262 perl_slots *slot; /* basically the saved sp */
263
173 /* data associated with this coroutine (initial args) */ 264 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 265 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 266 int flags; /* CF_ flags */
267 HV *hv; /* the perl hash associated with this coro, if any */
178 268
179 /* optionally saved, might be zero */ 269 /* statistics */
180 AV *defav; /* @_ */ 270 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
190 271
191 /* coro process data */ 272 /* coro process data */
192 int prio; 273 int prio;
274 SV *throw; /* exception to be thrown */
275
276 /* async_pool */
277 SV *saved_deffh;
278
279 /* linked list */
280 struct coro *next, *prev;
193}; 281};
194 282
195typedef struct coro *Coro__State; 283typedef struct coro *Coro__State;
196typedef struct coro *Coro__State_or_hashref; 284typedef struct coro *Coro__State_or_hashref;
197 285
… …
204#define PRIO_IDLE -3 292#define PRIO_IDLE -3
205#define PRIO_MIN -4 293#define PRIO_MIN -4
206 294
207/* for Coro.pm */ 295/* for Coro.pm */
208static SV *coro_current; 296static SV *coro_current;
297static SV *coro_readyhook;
209static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 298static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
210static int coro_nready; 299static int coro_nready;
300static struct coro *coro_first;
211 301
212/** lowlevel stuff **********************************************************/ 302/** lowlevel stuff **********************************************************/
303
304static SV *
305coro_get_sv (pTHX_ const char *name, int create)
306{
307#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_sv (name, create);
310#endif
311 return get_sv (name, create);
312}
313
314static AV *
315coro_get_av (pTHX_ const char *name, int create)
316{
317#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_av (name, create);
320#endif
321 return get_av (name, create);
322}
323
324static HV *
325coro_get_hv (pTHX_ const char *name, int create)
326{
327#if PERL_VERSION_ATLEAST (5,10,0)
328 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
329 get_hv (name, create);
330#endif
331 return get_hv (name, create);
332}
213 333
214static AV * 334static AV *
215coro_clone_padlist (pTHX_ CV *cv) 335coro_clone_padlist (pTHX_ CV *cv)
216{ 336{
217 AV *padlist = CvPADLIST (cv); 337 AV *padlist = CvPADLIST (cv);
218 AV *newpadlist, *newpad; 338 AV *newpadlist, *newpad;
219 339
220 newpadlist = newAV (); 340 newpadlist = newAV ();
221 AvREAL_off (newpadlist); 341 AvREAL_off (newpadlist);
222#if PERL_VERSION_ATLEAST (5,9,0) 342#if PERL_VERSION_ATLEAST (5,10,0)
223 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 343 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
224#else 344#else
225 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
226#endif 346#endif
227 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 347 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
228 --AvFILLp (padlist); 348 --AvFILLp (padlist);
229 349
230 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 350 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
231 av_store (newpadlist, 1, (SV *)newpad); 351 av_store (newpadlist, 1, (SV *)newpad);
232 352
233 return newpadlist; 353 return newpadlist;
234} 354}
235 355
… …
265 385
266 /* casting is fun. */ 386 /* casting is fun. */
267 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 387 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268 free_padlist (aTHX_ padlist); 388 free_padlist (aTHX_ padlist);
269 389
270 SvREFCNT_dec (av); 390 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
271 391
272 return 0; 392 return 0;
273} 393}
274 394
275#define PERL_MAGIC_coro PERL_MAGIC_ext 395#define CORO_MAGIC_type_cv PERL_MAGIC_ext
396#define CORO_MAGIC_type_state PERL_MAGIC_ext
276 397
277static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 398static MGVTBL coro_cv_vtbl = {
399 0, 0, 0, 0,
400 coro_cv_free
401};
278 402
279#define CORO_MAGIC(cv) \ 403#define CORO_MAGIC(sv, type) \
280 SvMAGIC (cv) \ 404 SvMAGIC (sv) \
281 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 405 ? SvMAGIC (sv)->mg_type == type \
282 ? SvMAGIC (cv) \ 406 ? SvMAGIC (sv) \
283 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 407 : mg_find (sv, type) \
284 : 0 408 : 0
409
410#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
411#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
412
413static struct coro *
414SvSTATE_ (pTHX_ SV *coro)
415{
416 HV *stash;
417 MAGIC *mg;
418
419 if (SvROK (coro))
420 coro = SvRV (coro);
421
422 if (expect_false (SvTYPE (coro) != SVt_PVHV))
423 croak ("Coro::State object required");
424
425 stash = SvSTASH (coro);
426 if (expect_false (stash != coro_stash && stash != coro_state_stash))
427 {
428 /* very slow, but rare, check */
429 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
430 croak ("Coro::State object required");
431 }
432
433 mg = CORO_MAGIC_state (coro);
434 return (struct coro *)mg->mg_ptr;
435}
436
437#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
285 438
286/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
287static void 440static void
288get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
289{ 442{
290 MAGIC *mg = CORO_MAGIC (cv); 443 MAGIC *mg = CORO_MAGIC_cv (cv);
291 AV *av; 444 AV *av;
292 445
293 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 448 else
296 { 449 {
297#if CORO_PREFER_PERL_FUNCTIONS 450#if CORO_PREFER_PERL_FUNCTIONS
298 /* this is probably cleaner, but also slower? */ 451 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */
299 CV *cp = Perl_cv_clone (cv); 453 CV *cp = Perl_cv_clone (cv);
300 CvPADLIST (cv) = CvPADLIST (cp); 454 CvPADLIST (cv) = CvPADLIST (cp);
301 CvPADLIST (cp) = 0; 455 CvPADLIST (cp) = 0;
302 SvREFCNT_dec (cp); 456 SvREFCNT_dec (cp);
303#else 457#else
… …
307} 461}
308 462
309static void 463static void
310put_padlist (pTHX_ CV *cv) 464put_padlist (pTHX_ CV *cv)
311{ 465{
312 MAGIC *mg = CORO_MAGIC (cv); 466 MAGIC *mg = CORO_MAGIC_cv (cv);
313 AV *av; 467 AV *av;
314 468
315 if (!mg) 469 if (expect_false (!mg))
316 { 470 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 }
322 471
323 av = (AV *)mg->mg_obj; 472 av = (AV *)mg->mg_obj;
324 473
325 if (AvFILLp (av) >= AvMAX (av)) 474 if (expect_false (AvFILLp (av) >= AvMAX (av)))
326 av_extend (av, AvMAX (av) + 1); 475 av_extend (av, AvMAX (av) + 1);
327 476
328 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329} 478}
330 479
331/** load & save, init *******************************************************/ 480/** 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
337 481
338static void 482static void
339load_perl (pTHX_ Coro__State c) 483load_perl (pTHX_ Coro__State c)
340{ 484{
485 perl_slots *slot = c->slot;
486 c->slot = 0;
487
488 PL_mainstack = c->mainstack;
489
490 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv;
494
341#define VAR(name,type) PL_ ## name = c->name; 495 #define VAR(name,type) PL_ ## name = slot->name;
342# include "state.h" 496 # include "state.h"
343#undef VAR 497 #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 }
364 498
365 { 499 {
366 dSP; 500 dSP;
501
367 CV *cv; 502 CV *cv;
368 503
369 /* now do the ugly restore mess */ 504 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 505 while (expect_true (cv = (CV *)POPs))
371 { 506 {
372 put_padlist (aTHX_ cv); /* mark this padlist as available */ 507 put_padlist (aTHX_ cv); /* mark this padlist as available */
373 CvDEPTH (cv) = PTR2IV (POPs); 508 CvDEPTH (cv) = PTR2IV (POPs);
374 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
375 } 510 }
376 511
377 PUTBACK; 512 PUTBACK;
378 } 513 }
379 assert (!PL_comppad || AvARRAY (PL_comppad));//D
380} 514}
381 515
382static void 516static void
383save_perl (pTHX_ Coro__State c) 517save_perl (pTHX_ Coro__State c)
384{ 518{
385 assert (!PL_comppad || AvARRAY (PL_comppad));//D
386 { 519 {
387 dSP; 520 dSP;
388 I32 cxix = cxstack_ix; 521 I32 cxix = cxstack_ix;
389 PERL_CONTEXT *ccstk = cxstack; 522 PERL_CONTEXT *ccstk = cxstack;
390 PERL_SI *top_si = PL_curstackinfo; 523 PERL_SI *top_si = PL_curstackinfo;
… …
392 /* 525 /*
393 * the worst thing you can imagine happens first - we have to save 526 * the worst thing you can imagine happens first - we have to save
394 * (and reinitialize) all cv's in the whole callchain :( 527 * (and reinitialize) all cv's in the whole callchain :(
395 */ 528 */
396 529
397 EXTEND (SP, 3 + 1);
398 PUSHs (Nullsv); 530 XPUSHs (Nullsv);
399 /* this loop was inspired by pp_caller */ 531 /* this loop was inspired by pp_caller */
400 for (;;) 532 for (;;)
401 { 533 {
402 while (cxix >= 0) 534 while (expect_true (cxix >= 0))
403 { 535 {
404 PERL_CONTEXT *cx = &ccstk[cxix--]; 536 PERL_CONTEXT *cx = &ccstk[cxix--];
405 537
406 if (CxTYPE (cx) == CXt_SUB) 538 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407 { 539 {
408 CV *cv = cx->blk_sub.cv; 540 CV *cv = cx->blk_sub.cv;
409 541
410 if (CvDEPTH (cv)) 542 if (expect_true (CvDEPTH (cv)))
411 { 543 {
412 EXTEND (SP, 3); 544 EXTEND (SP, 3);
413 PUSHs ((SV *)CvPADLIST (cv)); 545 PUSHs ((SV *)CvPADLIST (cv));
414 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 546 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
415 PUSHs ((SV *)cv); 547 PUSHs ((SV *)cv);
416 548
417 CvDEPTH (cv) = 0; 549 CvDEPTH (cv) = 0;
418 get_padlist (aTHX_ cv); 550 get_padlist (aTHX_ cv);
419 } 551 }
420 } 552 }
421 } 553 }
422 554
423 if (top_si->si_type == PERLSI_MAIN) 555 if (expect_true (top_si->si_type == PERLSI_MAIN))
424 break; 556 break;
425 557
426 top_si = top_si->si_prev; 558 top_si = top_si->si_prev;
427 ccstk = top_si->si_cxstack; 559 ccstk = top_si->si_cxstack;
428 cxix = top_si->si_cxix; 560 cxix = top_si->si_cxix;
429 } 561 }
430 562
431 PUTBACK; 563 PUTBACK;
432 } 564 }
433 565
434 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 566 /* allocate some space on the context stack for our purposes */
435 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 567 /* we manually unroll here, as usually 2 slots is enough */
436 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 568 if (SLOT_COUNT >= 1) CXINC;
437 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 569 if (SLOT_COUNT >= 2) CXINC;
438 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 570 if (SLOT_COUNT >= 3) CXINC;
571 {
572 int i;
573 for (i = 3; i < SLOT_COUNT; ++i)
574 CXINC;
575 }
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */
439 577
578 c->mainstack = PL_mainstack;
579
580 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582
583 slot->defav = GvAV (PL_defgv);
584 slot->defsv = DEFSV;
585 slot->errsv = ERRSV;
586 slot->irsgv = GvSV (irsgv);
587
440#define VAR(name,type)c->name = PL_ ## name; 588 #define VAR(name,type) slot->name = PL_ ## name;
441# include "state.h" 589 # include "state.h"
442#undef VAR 590 #undef VAR
591 }
443} 592}
444 593
445/* 594/*
446 * allocate various perl stacks. This is an exact copy 595 * allocate various perl stacks. This is an exact copy
447 * of perl.c:init_stacks, except that it uses less memory 596 * of perl.c:init_stacks, except that it uses less memory
… …
452# define coro_init_stacks init_stacks 601# define coro_init_stacks init_stacks
453#else 602#else
454static void 603static void
455coro_init_stacks (pTHX) 604coro_init_stacks (pTHX)
456{ 605{
457 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 606 PL_curstackinfo = new_stackinfo(32, 8);
458 PL_curstackinfo->si_type = PERLSI_MAIN; 607 PL_curstackinfo->si_type = PERLSI_MAIN;
459 PL_curstack = PL_curstackinfo->si_stack; 608 PL_curstack = PL_curstackinfo->si_stack;
460 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461 610
462 PL_stack_base = AvARRAY(PL_curstack); 611 PL_stack_base = AvARRAY(PL_curstack);
463 PL_stack_sp = PL_stack_base; 612 PL_stack_sp = PL_stack_base;
464 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 613 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465 614
466 New(50,PL_tmps_stack,128,SV*); 615 New(50,PL_tmps_stack,32,SV*);
467 PL_tmps_floor = -1; 616 PL_tmps_floor = -1;
468 PL_tmps_ix = -1; 617 PL_tmps_ix = -1;
469 PL_tmps_max = 128; 618 PL_tmps_max = 32;
470 619
471 New(54,PL_markstack,32,I32); 620 New(54,PL_markstack,16,I32);
472 PL_markstack_ptr = PL_markstack; 621 PL_markstack_ptr = PL_markstack;
473 PL_markstack_max = PL_markstack + 32; 622 PL_markstack_max = PL_markstack + 16;
474 623
475#ifdef SET_MARK_OFFSET 624#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 625 SET_MARK_OFFSET;
477#endif 626#endif
478 627
479 New(54,PL_scopestack,32,I32); 628 New(54,PL_scopestack,8,I32);
480 PL_scopestack_ix = 0; 629 PL_scopestack_ix = 0;
481 PL_scopestack_max = 32; 630 PL_scopestack_max = 8;
482 631
483 New(54,PL_savestack,64,ANY); 632 New(54,PL_savestack,24,ANY);
484 PL_savestack_ix = 0; 633 PL_savestack_ix = 0;
485 PL_savestack_max = 64; 634 PL_savestack_max = 24;
486 635
487#if !PERL_VERSION_ATLEAST (5,9,0) 636#if !PERL_VERSION_ATLEAST (5,10,0)
488 New(54,PL_retstack,16,OP*); 637 New(54,PL_retstack,4,OP*);
489 PL_retstack_ix = 0; 638 PL_retstack_ix = 0;
490 PL_retstack_max = 16; 639 PL_retstack_max = 4;
491#endif 640#endif
492} 641}
493#endif 642#endif
494 643
495/* 644/*
496 * destroy the stacks, the callchain etc... 645 * destroy the stacks, the callchain etc...
497 */ 646 */
498static void 647static void
499coro_destroy_stacks (pTHX) 648coro_destruct_stacks (pTHX)
500{ 649{
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) 650 while (PL_curstackinfo->si_next)
519 PL_curstackinfo = PL_curstackinfo->si_next; 651 PL_curstackinfo = PL_curstackinfo->si_next;
520 652
521 while (PL_curstackinfo) 653 while (PL_curstackinfo)
522 { 654 {
… …
532 664
533 Safefree (PL_tmps_stack); 665 Safefree (PL_tmps_stack);
534 Safefree (PL_markstack); 666 Safefree (PL_markstack);
535 Safefree (PL_scopestack); 667 Safefree (PL_scopestack);
536 Safefree (PL_savestack); 668 Safefree (PL_savestack);
537#if !PERL_VERSION_ATLEAST (5,9,0) 669#if !PERL_VERSION_ATLEAST (5,10,0)
538 Safefree (PL_retstack); 670 Safefree (PL_retstack);
539#endif 671#endif
540} 672}
541 673
674static size_t
675coro_rss (pTHX_ struct coro *coro)
676{
677 size_t rss = sizeof (*coro);
678
679 if (coro->mainstack)
680 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING)
685 {
686 slot = &tmp_slot;
687
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR
691 }
692 else
693 slot = coro->slot;
694
695 if (slot)
696 {
697 rss += sizeof (slot->curstackinfo);
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 }
709 }
710
711 return rss;
712}
713
542/** coroutine stack handling ************************************************/ 714/** coroutine stack handling ************************************************/
543 715
716static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
717static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
718static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
719
720/* apparently < 5.8.8 */
721#ifndef MgPV_nolen_const
722#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
723 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
724 (const char*)(mg)->mg_ptr)
725#endif
726
727/*
728 * This overrides the default magic get method of %SIG elements.
729 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
730 * and instead of tryign to save and restore the hash elements, we just provide
731 * readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */
736static int
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{
739 const char *s = MgPV_nolen_const (mg);
740
741 if (*s == '_')
742 {
743 SV **svp = 0;
744
745 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
746 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
747
748 if (svp)
749 {
750 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
751 return 0;
752 }
753 }
754
755 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
756}
757
758static int
759coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
760{
761 const char *s = MgPV_nolen_const (mg);
762
763 if (*s == '_')
764 {
765 SV **svp = 0;
766
767 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
768 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
769
770 if (svp)
771 {
772 SV *old = *svp;
773 *svp = 0;
774 SvREFCNT_dec (old);
775 return 0;
776 }
777 }
778
779 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
780}
781
782static int
783coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
784{
785 const char *s = MgPV_nolen_const (mg);
786
787 if (*s == '_')
788 {
789 SV **svp = 0;
790
791 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793
794 if (svp)
795 {
796 SV *old = *svp;
797 *svp = newSVsv (sv);
798 SvREFCNT_dec (old);
799 return 0;
800 }
801 }
802
803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804}
805
544static void 806static void
545setup_coro (pTHX_ struct coro *coro) 807coro_setup (pTHX_ struct coro *coro)
546{ 808{
547 /* 809 /*
548 * emulate part of the perl startup here. 810 * emulate part of the perl startup here.
549 */ 811 */
550 coro_init_stacks (aTHX); 812 coro_init_stacks (aTHX);
551 813
814 PL_runops = RUNOPS_DEFAULT;
552 PL_curcop = &PL_compiling; 815 PL_curcop = &PL_compiling;
553 PL_in_eval = EVAL_NULL; 816 PL_in_eval = EVAL_NULL;
554 PL_comppad = 0; 817 PL_comppad = 0;
555 PL_curpm = 0; 818 PL_curpm = 0;
819 PL_curpad = 0;
556 PL_localizing = 0; 820 PL_localizing = 0;
557 PL_dirty = 0; 821 PL_dirty = 0;
558 PL_restartop = 0; 822 PL_restartop = 0;
823#if PERL_VERSION_ATLEAST (5,10,0)
824 PL_parser = 0;
825#endif
826
827 /* recreate the die/warn hooks */
828 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
829 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
830
831 GvSV (PL_defgv) = newSV (0);
832 GvAV (PL_defgv) = coro->args; coro->args = 0;
833 GvSV (PL_errgv) = newSV (0);
834 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
835 PL_rs = newSVsv (GvSV (irsgv));
836 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
559 837
560 { 838 {
561 dSP; 839 dSP;
562 LOGOP myop; 840 LOGOP myop;
563 841
564 SvREFCNT_dec (GvAV (PL_defgv));
565 GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567 Zero (&myop, 1, LOGOP); 842 Zero (&myop, 1, LOGOP);
568 myop.op_next = Nullop; 843 myop.op_next = Nullop;
569 myop.op_flags = OPf_WANT_VOID; 844 myop.op_flags = OPf_WANT_VOID;
570 845
571 PUSHMARK (SP); 846 PUSHMARK (SP);
572 XPUSHs (av_shift (GvAV (PL_defgv))); 847 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573 PUTBACK; 848 PUTBACK;
574 PL_op = (OP *)&myop; 849 PL_op = (OP *)&myop;
575 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 850 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576 SPAGAIN; 851 SPAGAIN;
577 } 852 }
578 853
579 ENTER; /* necessary e.g. for dounwind */ 854 /* this newly created coroutine might be run on an existing cctx which most
855 * likely was suspended in set_stacklevel, called from entersub.
856 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
857 * so we ENTER here for symmetry
858 */
859 ENTER;
860}
861
862static void
863coro_destruct (pTHX_ struct coro *coro)
864{
865 if (!IN_DESTRUCT)
866 {
867 /* restore all saved variables and stuff */
868 LEAVE_SCOPE (0);
869 assert (PL_tmps_floor == -1);
870
871 /* free all temporaries */
872 FREETMPS;
873 assert (PL_tmps_ix == -1);
874
875 /* unwind all extra stacks */
876 POPSTACK_TO (PL_mainstack);
877
878 /* unwind main stack */
879 dounwind (-1);
880 }
881
882 SvREFCNT_dec (GvSV (PL_defgv));
883 SvREFCNT_dec (GvAV (PL_defgv));
884 SvREFCNT_dec (GvSV (PL_errgv));
885 SvREFCNT_dec (PL_defoutgv);
886 SvREFCNT_dec (PL_rs);
887 SvREFCNT_dec (GvSV (irsgv));
888
889 SvREFCNT_dec (PL_diehook);
890 SvREFCNT_dec (PL_warnhook);
891
892 SvREFCNT_dec (coro->saved_deffh);
893 SvREFCNT_dec (coro->throw);
894
895 coro_destruct_stacks (aTHX);
580} 896}
581 897
582static void 898static void
583free_coro_mortal (pTHX) 899free_coro_mortal (pTHX)
584{ 900{
585 if (coro_mortal) 901 if (expect_true (coro_mortal))
586 { 902 {
587 SvREFCNT_dec (coro_mortal); 903 SvREFCNT_dec (coro_mortal);
588 coro_mortal = 0; 904 coro_mortal = 0;
589 } 905 }
906}
907
908static int
909runops_trace (pTHX)
910{
911 COP *oldcop = 0;
912 int oldcxix = -2;
913 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
914 coro_cctx *cctx = coro->cctx;
915
916 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
917 {
918 PERL_ASYNC_CHECK ();
919
920 if (cctx->flags & CC_TRACE_ALL)
921 {
922 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
923 {
924 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
925 SV **bot, **top;
926 AV *av = newAV (); /* return values */
927 SV **cb;
928 dSP;
929
930 GV *gv = CvGV (cx->blk_sub.cv);
931 SV *fullname = sv_2mortal (newSV (0));
932 if (isGV (gv))
933 gv_efullname3 (fullname, gv, 0);
934
935 bot = PL_stack_base + cx->blk_oldsp + 1;
936 top = cx->blk_gimme == G_ARRAY ? SP + 1
937 : cx->blk_gimme == G_SCALAR ? bot + 1
938 : bot;
939
940 av_extend (av, top - bot);
941 while (bot < top)
942 av_push (av, SvREFCNT_inc_NN (*bot++));
943
944 PL_runops = RUNOPS_DEFAULT;
945 ENTER;
946 SAVETMPS;
947 EXTEND (SP, 3);
948 PUSHMARK (SP);
949 PUSHs (&PL_sv_no);
950 PUSHs (fullname);
951 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
952 PUTBACK;
953 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
954 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
955 SPAGAIN;
956 FREETMPS;
957 LEAVE;
958 PL_runops = runops_trace;
959 }
960
961 if (oldcop != PL_curcop)
962 {
963 oldcop = PL_curcop;
964
965 if (PL_curcop != &PL_compiling)
966 {
967 SV **cb;
968
969 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
970 {
971 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972
973 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
974 {
975 runops_proc_t old_runops = PL_runops;
976 dSP;
977 GV *gv = CvGV (cx->blk_sub.cv);
978 SV *fullname = sv_2mortal (newSV (0));
979
980 if (isGV (gv))
981 gv_efullname3 (fullname, gv, 0);
982
983 PL_runops = RUNOPS_DEFAULT;
984 ENTER;
985 SAVETMPS;
986 EXTEND (SP, 3);
987 PUSHMARK (SP);
988 PUSHs (&PL_sv_yes);
989 PUSHs (fullname);
990 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
991 PUTBACK;
992 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
993 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
994 SPAGAIN;
995 FREETMPS;
996 LEAVE;
997 PL_runops = runops_trace;
998 }
999
1000 oldcxix = cxstack_ix;
1001 }
1002
1003 if (cctx->flags & CC_TRACE_LINE)
1004 {
1005 dSP;
1006
1007 PL_runops = RUNOPS_DEFAULT;
1008 ENTER;
1009 SAVETMPS;
1010 EXTEND (SP, 3);
1011 PL_runops = RUNOPS_DEFAULT;
1012 PUSHMARK (SP);
1013 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1014 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1015 PUTBACK;
1016 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1017 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1018 SPAGAIN;
1019 FREETMPS;
1020 LEAVE;
1021 PL_runops = runops_trace;
1022 }
1023 }
1024 }
1025 }
1026 }
1027
1028 TAINT_NOT;
1029 return 0;
590} 1030}
591 1031
592/* inject a fake call to Coro::State::_cctx_init into the execution */ 1032/* 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 */ 1033/* _cctx_init should be careful, as it could be called at almost any time */
594/* during execution of a perl program */ 1034/* during execution of a perl program */
1035/* also initialises PL_top_env */
595static void NOINLINE 1036static void NOINLINE
596prepare_cctx (pTHX_ coro_cctx *cctx) 1037cctx_prepare (pTHX_ coro_cctx *cctx)
597{ 1038{
598 dSP; 1039 dSP;
599 LOGOP myop; 1040 LOGOP myop;
1041
1042 PL_top_env = &PL_start_env;
1043
1044 if (cctx->flags & CC_TRACE)
1045 PL_runops = runops_trace;
600 1046
601 Zero (&myop, 1, LOGOP); 1047 Zero (&myop, 1, LOGOP);
602 myop.op_next = PL_op; 1048 myop.op_next = PL_op;
603 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1049 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604 1050
… …
610 PL_op = (OP *)&myop; 1056 PL_op = (OP *)&myop;
611 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1057 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
612 SPAGAIN; 1058 SPAGAIN;
613} 1059}
614 1060
1061/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
1062static void
1063transfer_tail (void)
1064{
1065 UNLOCK;
1066
1067 if (expect_false (next_has_throw))
1068 {
1069 struct coro *coro = SvSTATE (coro_current);
1070
1071 if (coro->throw)
1072 {
1073 SV *exception = coro->throw;
1074 coro->throw = 0;
1075 sv_setsv (ERRSV, exception);
1076 croak (0);
1077 }
1078 }
1079}
1080
615/* 1081/*
616 * this is a _very_ stripped down perl interpreter ;) 1082 * this is a _very_ stripped down perl interpreter ;)
617 */ 1083 */
618static void 1084static void
619coro_run (void *arg) 1085cctx_run (void *arg)
620{ 1086{
1087#ifdef USE_ITHREADS
1088# if CORO_PTHREAD
1089 PERL_SET_CONTEXT (coro_thx);
1090# endif
1091#endif
1092 {
621 dTHX; 1093 dTHX;
622 1094
623 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1095 /* we now skip the entersub that lead to transfer () */
624 UNLOCK; 1096 PL_op = PL_op->op_next;
625 1097
626 PL_top_env = &PL_start_env;
627
628 /* inject a fake subroutine call to cctx_init */ 1098 /* inject a fake subroutine call to cctx_init */
629 prepare_cctx (aTHX_ (coro_cctx *)arg); 1099 cctx_prepare (aTHX_ (coro_cctx *)arg);
630 1100
1101 /* cctx_run is the alternative tail of transfer () */
1102 transfer_tail ();
1103
631 /* somebody or something will hit me for both perl_run and PL_restartop */ 1104 /* somebody or something will hit me for both perl_run and PL_restartop */
632 PL_restartop = PL_op; 1105 PL_restartop = PL_op;
633 perl_run (PL_curinterp); 1106 perl_run (PL_curinterp);
634 1107
635 /* 1108 /*
636 * If perl-run returns we assume exit() was being called or the coro 1109 * 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) 1110 * 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 1111 * 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" 1112 * bootstrap-time "top" top_env, as we cannot restore the "main"
640 * coroutine as Coro has no such concept 1113 * coroutine as Coro has no such concept
641 */ 1114 */
642 PL_top_env = main_top_env; 1115 PL_top_env = main_top_env;
643 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1116 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1117 }
644} 1118}
645 1119
646static coro_cctx * 1120static coro_cctx *
647cctx_new () 1121cctx_new ()
648{ 1122{
649 coro_cctx *cctx; 1123 coro_cctx *cctx;
1124
1125 ++cctx_count;
1126 New (0, cctx, 1, coro_cctx);
1127
1128 cctx->gen = cctx_gen;
1129 cctx->flags = 0;
1130 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */
1131
1132 return cctx;
1133}
1134
1135/* create a new cctx only suitable as source */
1136static coro_cctx *
1137cctx_new_empty ()
1138{
1139 coro_cctx *cctx = cctx_new ();
1140
1141 cctx->sptr = 0;
1142 coro_create (&cctx->cctx, 0, 0, 0, 0);
1143
1144 return cctx;
1145}
1146
1147/* create a new cctx suitable as destination/running a perl interpreter */
1148static coro_cctx *
1149cctx_new_run ()
1150{
1151 coro_cctx *cctx = cctx_new ();
650 void *stack_start; 1152 void *stack_start;
651 size_t stack_size; 1153 size_t stack_size;
652 1154
653 ++cctx_count;
654
655 Newz (0, cctx, 1, coro_cctx);
656
657#if HAVE_MMAP 1155#if HAVE_MMAP
658
659 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1156 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
660 /* mmap supposedly does allocate-on-write for us */ 1157 /* 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); 1158 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
662 1159
663 if (cctx->sptr != (void *)-1) 1160 if (cctx->sptr != (void *)-1)
664 { 1161 {
665# if CORO_STACKGUARD 1162# if CORO_STACKGUARD
666 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1163 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
667# endif 1164# endif
668 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1165 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
669 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1166 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
670 cctx->mapped = 1; 1167 cctx->flags |= CC_MAPPED;
671 } 1168 }
672 else 1169 else
673#endif 1170#endif
674 { 1171 {
675 cctx->ssize = coro_stacksize * (long)sizeof (long); 1172 cctx->ssize = cctx_stacksize * (long)sizeof (long);
676 New (0, cctx->sptr, coro_stacksize, long); 1173 New (0, cctx->sptr, cctx_stacksize, long);
677 1174
678 if (!cctx->sptr) 1175 if (!cctx->sptr)
679 { 1176 {
680 perror ("FATAL: unable to allocate stack for coroutine"); 1177 perror ("FATAL: unable to allocate stack for coroutine");
681 _exit (EXIT_FAILURE); 1178 _exit (EXIT_FAILURE);
… …
684 stack_start = cctx->sptr; 1181 stack_start = cctx->sptr;
685 stack_size = cctx->ssize; 1182 stack_size = cctx->ssize;
686 } 1183 }
687 1184
688 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1185 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
689 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1186 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
690 1187
691 return cctx; 1188 return cctx;
692} 1189}
693 1190
694static void 1191static void
… …
696{ 1193{
697 if (!cctx) 1194 if (!cctx)
698 return; 1195 return;
699 1196
700 --cctx_count; 1197 --cctx_count;
1198 coro_destroy (&cctx->cctx);
701 1199
1200 /* coro_transfer creates new, empty cctx's */
1201 if (cctx->sptr)
1202 {
702#if CORO_USE_VALGRIND 1203#if CORO_USE_VALGRIND
703 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1204 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
704#endif 1205#endif
705 1206
706#if HAVE_MMAP 1207#if HAVE_MMAP
707 if (cctx->mapped) 1208 if (cctx->flags & CC_MAPPED)
708 munmap (cctx->sptr, cctx->ssize); 1209 munmap (cctx->sptr, cctx->ssize);
709 else 1210 else
710#endif 1211#endif
711 Safefree (cctx->sptr); 1212 Safefree (cctx->sptr);
1213 }
712 1214
713 Safefree (cctx); 1215 Safefree (cctx);
714} 1216}
1217
1218/* wether this cctx should be destructed */
1219#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
715 1220
716static coro_cctx * 1221static coro_cctx *
717cctx_get (pTHX) 1222cctx_get (pTHX)
718{ 1223{
719 while (cctx_first) 1224 while (expect_true (cctx_first))
720 { 1225 {
721 coro_cctx *cctx = cctx_first; 1226 coro_cctx *cctx = cctx_first;
722 cctx_first = cctx->next; 1227 cctx_first = cctx->next;
723 --cctx_idle; 1228 --cctx_idle;
724 1229
725 if (cctx->ssize >= coro_stacksize) 1230 if (expect_true (!CCTX_EXPIRED (cctx)))
726 return cctx; 1231 return cctx;
727 1232
728 cctx_destroy (cctx); 1233 cctx_destroy (cctx);
729 } 1234 }
730 1235
731 PL_op = PL_op->op_next;
732 return cctx_new (); 1236 return cctx_new_run ();
733} 1237}
734 1238
735static void 1239static void
736cctx_put (coro_cctx *cctx) 1240cctx_put (coro_cctx *cctx)
737{ 1241{
1242 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1243
738 /* free another cctx if overlimit */ 1244 /* free another cctx if overlimit */
739 if (cctx_idle >= MAX_IDLE_CCTX) 1245 if (expect_false (cctx_idle >= cctx_max_idle))
740 { 1246 {
741 coro_cctx *first = cctx_first; 1247 coro_cctx *first = cctx_first;
742 cctx_first = first->next; 1248 cctx_first = first->next;
743 --cctx_idle; 1249 --cctx_idle;
744 1250
745 assert (!first->inuse);
746 cctx_destroy (first); 1251 cctx_destroy (first);
747 } 1252 }
748 1253
749 ++cctx_idle; 1254 ++cctx_idle;
750 cctx->next = cctx_first; 1255 cctx->next = cctx_first;
751 cctx_first = cctx; 1256 cctx_first = cctx;
752} 1257}
753 1258
754/** coroutine switching *****************************************************/ 1259/** coroutine switching *****************************************************/
755 1260
756/* never call directly, always through the coro_state_transfer global variable */ 1261static void
1262transfer_check (pTHX_ struct coro *prev, struct coro *next)
1263{
1264 if (expect_true (prev != next))
1265 {
1266 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1267 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1268
1269 if (expect_false (next->flags & CF_RUNNING))
1270 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1271
1272 if (expect_false (next->flags & CF_DESTROYED))
1273 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1274
1275#if !PERL_VERSION_ATLEAST (5,10,0)
1276 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1277 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1278#endif
1279 }
1280}
1281
1282/* always use the TRANSFER macro */
757static void NOINLINE 1283static void NOINLINE
758transfer (pTHX_ struct coro *prev, struct coro *next) 1284transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
759{ 1285{
760 dSTACKLEVEL; 1286 dSTACKLEVEL;
761 1287
762 /* sometimes transfer is only called to set idle_sp */ 1288 /* sometimes transfer is only called to set idle_sp */
763 if (!next) 1289 if (expect_false (!next))
764 { 1290 {
765 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1291 ((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 */ 1292 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
767 } 1293 }
768 else if (prev != next) 1294 else if (expect_true (prev != next))
769 { 1295 {
770 coro_cctx *prev__cctx; 1296 coro_cctx *prev__cctx;
771 1297
772 if (prev->flags & CF_NEW) 1298 if (expect_false (prev->flags & CF_NEW))
773 { 1299 {
774 /* create a new empty context */ 1300 /* create a new empty/source context */
775 Newz (0, prev->cctx, 1, coro_cctx); 1301 prev->cctx = cctx_new_empty ();
776 prev->cctx->inuse = 1;
777 prev->flags &= ~CF_NEW; 1302 prev->flags &= ~CF_NEW;
778 prev->flags |= CF_RUNNING; 1303 prev->flags |= CF_RUNNING;
779 } 1304 }
780 1305
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; 1306 prev->flags &= ~CF_RUNNING;
792 next->flags |= CF_RUNNING; 1307 next->flags |= CF_RUNNING;
793 1308
794 LOCK; 1309 LOCK;
795 1310
1311 /* first get rid of the old state */
1312 save_perl (aTHX_ prev);
1313
796 if (next->flags & CF_NEW) 1314 if (expect_false (next->flags & CF_NEW))
797 { 1315 {
798 /* need to start coroutine */ 1316 /* need to start coroutine */
799 next->flags &= ~CF_NEW; 1317 next->flags &= ~CF_NEW;
800 /* first get rid of the old state */
801 save_perl (aTHX_ prev);
802 /* setup coroutine call */ 1318 /* setup coroutine call */
803 setup_coro (aTHX_ next); 1319 coro_setup (aTHX_ next);
804 /* need a new stack */
805 assert (!next->cctx);
806 } 1320 }
807 else 1321 else
808 {
809 /* coroutine already started */
810 save_perl (aTHX_ prev);
811 load_perl (aTHX_ next); 1322 load_perl (aTHX_ next);
812 }
813 1323
814 prev__cctx = prev->cctx; 1324 prev__cctx = prev->cctx;
815 1325
1326 if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
816 /* possibly "free" the cctx */ 1328 /* possibly "free" the cctx */
1329 if (expect_true (
817 if (prev__cctx->idle_sp == STACKLEVEL) 1330 prev__cctx->idle_sp == STACKLEVEL
1331 && !(prev__cctx->flags & CC_TRACE)
1332 && !force_cctx
1333 ))
818 { 1334 {
819 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1335 /* 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)); 1336 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
821 1337
822 prev->cctx = 0; 1338 prev->cctx = 0;
823 1339
1340 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1341 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1342 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1343 if (!next->cctx)
1344 next->cctx = cctx_get (aTHX);
1345
824 cctx_put (prev__cctx); 1346 cctx_put (prev__cctx);
825 prev__cctx->inuse = 0;
826 } 1347 }
827 1348
1349 ++next->usecount;
1350
828 if (!next->cctx) 1351 if (expect_true (!next->cctx))
829 {
830 next->cctx = cctx_get (aTHX); 1352 next->cctx = cctx_get (aTHX);
831 assert (!next->cctx->inuse);
832 next->cctx->inuse = 1;
833 }
834 1353
1354 next_has_throw = !!next->throw;
1355
835 if (prev__cctx != next->cctx) 1356 if (expect_false (prev__cctx != next->cctx))
836 { 1357 {
837 prev__cctx->top_env = PL_top_env; 1358 prev__cctx->top_env = PL_top_env;
838 PL_top_env = next->cctx->top_env; 1359 PL_top_env = next->cctx->top_env;
839 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1360 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
840 } 1361 }
841 1362
842 free_coro_mortal (aTHX); 1363 free_coro_mortal (aTHX);
843 UNLOCK; 1364 UNLOCK;
1365
1366 transfer_tail ();
844 } 1367 }
845} 1368}
846 1369
847struct transfer_args 1370struct transfer_args
848{ 1371{
849 struct coro *prev, *next; 1372 struct coro *prev, *next;
850}; 1373};
851 1374
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
852#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
853 1377
854/** high level stuff ********************************************************/ 1378/** high level stuff ********************************************************/
855 1379
856static int 1380static int
857coro_state_destroy (pTHX_ struct coro *coro) 1381coro_state_destroy (pTHX_ struct coro *coro)
… …
874 1398
875 if (coro->mainstack && coro->mainstack != main_mainstack) 1399 if (coro->mainstack && coro->mainstack != main_mainstack)
876 { 1400 {
877 struct coro temp; 1401 struct coro temp;
878 1402
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) 1403 if (coro->flags & CF_RUNNING)
885 croak ("FATAL: tried to destroy currently running coroutine"); 1404 croak ("FATAL: tried to destroy currently running coroutine");
886 1405
887 save_perl (aTHX_ &temp); 1406 save_perl (aTHX_ &temp);
888 load_perl (aTHX_ coro); 1407 load_perl (aTHX_ coro);
889 1408
890 coro_destroy_stacks (aTHX); 1409 coro_destruct (aTHX_ coro);
891 1410
892 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1411 load_perl (aTHX_ &temp);
893 1412
894 coro->mainstack = 0; 1413 coro->slot = 0;
895 } 1414 }
896 1415
897 cctx_destroy (coro->cctx); 1416 cctx_destroy (coro->cctx);
898 SvREFCNT_dec (coro->args); 1417 SvREFCNT_dec (coro->args);
899 1418
1419 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next;
1422
900 return 1; 1423 return 1;
901} 1424}
902 1425
903static int 1426static int
904coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1427coro_state_free (pTHX_ SV *sv, MAGIC *mg)
905{ 1428{
906 struct coro *coro = (struct coro *)mg->mg_ptr; 1429 struct coro *coro = (struct coro *)mg->mg_ptr;
907 mg->mg_ptr = 0; 1430 mg->mg_ptr = 0;
1431
1432 coro->hv = 0;
908 1433
909 if (--coro->refcnt < 0) 1434 if (--coro->refcnt < 0)
910 { 1435 {
911 coro_state_destroy (aTHX_ coro); 1436 coro_state_destroy (aTHX_ coro);
912 Safefree (coro); 1437 Safefree (coro);
… …
934#else 1459#else
935# define MGf_DUP 0 1460# define MGf_DUP 0
936#endif 1461#endif
937}; 1462};
938 1463
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 1464static void
963prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1465prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
964{ 1466{
965 ta->prev = SvSTATE (prev_sv); 1467 ta->prev = SvSTATE (prev_sv);
966 ta->next = SvSTATE (next_sv); 1468 ta->next = SvSTATE (next_sv);
1469 TRANSFER_CHECK (*ta);
967} 1470}
968 1471
969static void 1472static void
970api_transfer (SV *prev_sv, SV *next_sv) 1473api_transfer (SV *prev_sv, SV *next_sv)
971{ 1474{
972 dTHX; 1475 dTHX;
973 struct transfer_args ta; 1476 struct transfer_args ta;
974 1477
975 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1478 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
976 TRANSFER (ta); 1479 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} 1480}
991 1481
992/** Coro ********************************************************************/ 1482/** Coro ********************************************************************/
993 1483
994static void 1484static void
… …
996{ 1486{
997 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1487 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
998} 1488}
999 1489
1000static SV * 1490static SV *
1001coro_deq (pTHX_ int min_prio) 1491coro_deq (pTHX)
1002{ 1492{
1003 int prio = PRIO_MAX - PRIO_MIN; 1493 int prio;
1004 1494
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; ) 1495 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1010 if (AvFILLp (coro_ready [prio]) >= 0) 1496 if (AvFILLp (coro_ready [prio]) >= 0)
1011 return av_shift (coro_ready [prio]); 1497 return av_shift (coro_ready [prio]);
1012 1498
1013 return 0; 1499 return 0;
1014} 1500}
… …
1016static int 1502static int
1017api_ready (SV *coro_sv) 1503api_ready (SV *coro_sv)
1018{ 1504{
1019 dTHX; 1505 dTHX;
1020 struct coro *coro; 1506 struct coro *coro;
1507 SV *sv_hook;
1508 void (*xs_hook)(void);
1021 1509
1022 if (SvROK (coro_sv)) 1510 if (SvROK (coro_sv))
1023 coro_sv = SvRV (coro_sv); 1511 coro_sv = SvRV (coro_sv);
1024 1512
1025 coro = SvSTATE (coro_sv); 1513 coro = SvSTATE (coro_sv);
… …
1028 return 0; 1516 return 0;
1029 1517
1030 coro->flags |= CF_READY; 1518 coro->flags |= CF_READY;
1031 1519
1032 LOCK; 1520 LOCK;
1521
1522 sv_hook = coro_nready ? 0 : coro_readyhook;
1523 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1524
1033 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1525 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1034 ++coro_nready; 1526 ++coro_nready;
1527
1035 UNLOCK; 1528 UNLOCK;
1529
1530 if (sv_hook)
1531 {
1532 dSP;
1533
1534 ENTER;
1535 SAVETMPS;
1536
1537 PUSHMARK (SP);
1538 PUTBACK;
1539 call_sv (sv_hook, G_DISCARD);
1540 SPAGAIN;
1541
1542 FREETMPS;
1543 LEAVE;
1544 }
1545
1546 if (xs_hook)
1547 xs_hook ();
1036 1548
1037 return 1; 1549 return 1;
1038} 1550}
1039 1551
1040static int 1552static int
… …
1050 SV *prev_sv, *next_sv; 1562 SV *prev_sv, *next_sv;
1051 1563
1052 for (;;) 1564 for (;;)
1053 { 1565 {
1054 LOCK; 1566 LOCK;
1055 next_sv = coro_deq (aTHX_ PRIO_MIN); 1567 next_sv = coro_deq (aTHX);
1056 1568
1057 /* nothing to schedule: call the idle handler */ 1569 /* nothing to schedule: call the idle handler */
1058 if (!next_sv) 1570 if (expect_false (!next_sv))
1059 { 1571 {
1060 dSP; 1572 dSP;
1061 UNLOCK; 1573 UNLOCK;
1062 1574
1063 ENTER; 1575 ENTER;
1064 SAVETMPS; 1576 SAVETMPS;
1065 1577
1066 PUSHMARK (SP); 1578 PUSHMARK (SP);
1067 PUTBACK; 1579 PUTBACK;
1068 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1580 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1581 SPAGAIN;
1069 1582
1070 FREETMPS; 1583 FREETMPS;
1071 LEAVE; 1584 LEAVE;
1072 continue; 1585 continue;
1073 } 1586 }
1074 1587
1075 ta->next = SvSTATE (next_sv); 1588 ta->next = SvSTATE (next_sv);
1076 1589
1077 /* cannot transfer to destroyed coros, skip and look for next */ 1590 /* cannot transfer to destroyed coros, skip and look for next */
1078 if (ta->next->flags & CF_DESTROYED) 1591 if (expect_false (ta->next->flags & CF_DESTROYED))
1079 { 1592 {
1080 UNLOCK; 1593 UNLOCK;
1081 SvREFCNT_dec (next_sv); 1594 SvREFCNT_dec (next_sv);
1082 /* coro_nready is already taken care of by destroy */ 1595 /* coro_nready is already taken care of by destroy */
1083 continue; 1596 continue;
… …
1088 break; 1601 break;
1089 } 1602 }
1090 1603
1091 /* free this only after the transfer */ 1604 /* free this only after the transfer */
1092 prev_sv = SvRV (coro_current); 1605 prev_sv = SvRV (coro_current);
1093 SvRV_set (coro_current, next_sv);
1094 ta->prev = SvSTATE (prev_sv); 1606 ta->prev = SvSTATE (prev_sv);
1095 1607 TRANSFER_CHECK (*ta);
1096 assert (ta->next->flags & CF_READY); 1608 assert (ta->next->flags & CF_READY);
1097 ta->next->flags &= ~CF_READY; 1609 ta->next->flags &= ~CF_READY;
1610 SvRV_set (coro_current, next_sv);
1098 1611
1099 LOCK; 1612 LOCK;
1100 free_coro_mortal (aTHX); 1613 free_coro_mortal (aTHX);
1101 coro_mortal = prev_sv; 1614 coro_mortal = prev_sv;
1102 UNLOCK; 1615 UNLOCK;
… …
1128{ 1641{
1129 dTHX; 1642 dTHX;
1130 struct transfer_args ta; 1643 struct transfer_args ta;
1131 1644
1132 prepare_schedule (aTHX_ &ta); 1645 prepare_schedule (aTHX_ &ta);
1133 TRANSFER (ta); 1646 TRANSFER (ta, 1);
1134} 1647}
1135 1648
1136static int 1649static int
1137api_cede (void) 1650api_cede (void)
1138{ 1651{
1139 dTHX; 1652 dTHX;
1140 struct transfer_args ta; 1653 struct transfer_args ta;
1141 1654
1142 prepare_cede (aTHX_ &ta); 1655 prepare_cede (aTHX_ &ta);
1143 1656
1144 if (ta.prev != ta.next) 1657 if (expect_true (ta.prev != ta.next))
1145 { 1658 {
1146 TRANSFER (ta); 1659 TRANSFER (ta, 1);
1147 return 1; 1660 return 1;
1148 } 1661 }
1149 else 1662 else
1150 return 0; 1663 return 0;
1151} 1664}
… …
1156 dTHX; 1669 dTHX;
1157 struct transfer_args ta; 1670 struct transfer_args ta;
1158 1671
1159 if (prepare_cede_notself (aTHX_ &ta)) 1672 if (prepare_cede_notself (aTHX_ &ta))
1160 { 1673 {
1161 TRANSFER (ta); 1674 TRANSFER (ta, 1);
1162 return 1; 1675 return 1;
1163 } 1676 }
1164 else 1677 else
1165 return 0; 1678 return 0;
1166} 1679}
1167 1680
1681static void
1682api_trace (SV *coro_sv, int flags)
1683{
1684 dTHX;
1685 struct coro *coro = SvSTATE (coro_sv);
1686
1687 if (flags & CC_TRACE)
1688 {
1689 if (!coro->cctx)
1690 coro->cctx = cctx_new_run ();
1691 else if (!(coro->cctx->flags & CC_TRACE))
1692 croak ("cannot enable tracing on coroutine with custom stack");
1693
1694 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1695 }
1696 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1697 {
1698 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1699
1700 if (coro->flags & CF_RUNNING)
1701 PL_runops = RUNOPS_DEFAULT;
1702 else
1703 coro->slot->runops = RUNOPS_DEFAULT;
1704 }
1705}
1706
1707#if 0
1708static int
1709coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1710{
1711 AV *padlist;
1712 AV *av = (AV *)mg->mg_obj;
1713
1714 abort ();
1715
1716 return 0;
1717}
1718
1719static MGVTBL coro_gensub_vtbl = {
1720 0, 0, 0, 0,
1721 coro_gensub_free
1722};
1723#endif
1724
1725/*****************************************************************************/
1726/* PerlIO::cede */
1727
1728typedef struct
1729{
1730 PerlIOBuf base;
1731 NV next, every;
1732} PerlIOCede;
1733
1734static IV
1735PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1736{
1737 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1738
1739 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1740 self->next = nvtime () + self->every;
1741
1742 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1743}
1744
1745static SV *
1746PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1747{
1748 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1749
1750 return newSVnv (self->every);
1751}
1752
1753static IV
1754PerlIOCede_flush (pTHX_ PerlIO *f)
1755{
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime ();
1758
1759 if (now >= self->next)
1760 {
1761 api_cede ();
1762 self->next = now + self->every;
1763 }
1764
1765 return PerlIOBuf_flush (aTHX_ f);
1766}
1767
1768static PerlIO_funcs PerlIO_cede =
1769{
1770 sizeof(PerlIO_funcs),
1771 "cede",
1772 sizeof(PerlIOCede),
1773 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1774 PerlIOCede_pushed,
1775 PerlIOBuf_popped,
1776 PerlIOBuf_open,
1777 PerlIOBase_binmode,
1778 PerlIOCede_getarg,
1779 PerlIOBase_fileno,
1780 PerlIOBuf_dup,
1781 PerlIOBuf_read,
1782 PerlIOBuf_unread,
1783 PerlIOBuf_write,
1784 PerlIOBuf_seek,
1785 PerlIOBuf_tell,
1786 PerlIOBuf_close,
1787 PerlIOCede_flush,
1788 PerlIOBuf_fill,
1789 PerlIOBase_eof,
1790 PerlIOBase_error,
1791 PerlIOBase_clearerr,
1792 PerlIOBase_setlinebuf,
1793 PerlIOBuf_get_base,
1794 PerlIOBuf_bufsiz,
1795 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt,
1798};
1799
1800
1168MODULE = Coro::State PACKAGE = Coro::State 1801MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1169 1802
1170PROTOTYPES: DISABLE 1803PROTOTYPES: DISABLE
1171 1804
1172BOOT: 1805BOOT:
1173{ 1806{
1174#ifdef USE_ITHREADS 1807#ifdef USE_ITHREADS
1175 MUTEX_INIT (&coro_mutex); 1808 MUTEX_INIT (&coro_lock);
1809# if CORO_PTHREAD
1810 coro_thx = PERL_GET_CONTEXT;
1811# endif
1176#endif 1812#endif
1177 BOOT_PAGESIZE; 1813 BOOT_PAGESIZE;
1178 1814
1815 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1816 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1817
1818 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1819 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1820 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1821
1822 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1823 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1824 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1825
1179 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1826 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1180 1827
1181 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1828 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1182 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1829 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
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)); 1830 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1187 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1831 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1188 1832
1189 main_mainstack = PL_mainstack; 1833 main_mainstack = PL_mainstack;
1190 main_top_env = PL_top_env; 1834 main_top_env = PL_top_env;
1191 1835
1192 while (main_top_env->je_prev) 1836 while (main_top_env->je_prev)
1193 main_top_env = main_top_env->je_prev; 1837 main_top_env = main_top_env->je_prev;
1194 1838
1195 coroapi.ver = CORO_API_VERSION; 1839 coroapi.ver = CORO_API_VERSION;
1840 coroapi.rev = CORO_API_REVISION;
1196 coroapi.transfer = api_transfer; 1841 coroapi.transfer = api_transfer;
1842
1843 {
1844 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845
1846 if (!svp) croak ("Time::HiRes is required");
1847 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1848
1849 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1850 }
1197 1851
1198 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1852 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1199} 1853}
1200 1854
1201SV * 1855SV *
1202new (char *klass, ...) 1856new (char *klass, ...)
1203 CODE: 1857 CODE:
1204{ 1858{
1205 struct coro *coro; 1859 struct coro *coro;
1860 MAGIC *mg;
1206 HV *hv; 1861 HV *hv;
1207 int i; 1862 int i;
1208 1863
1209 Newz (0, coro, 1, struct coro); 1864 Newz (0, coro, 1, struct coro);
1210 coro->args = newAV (); 1865 coro->args = newAV ();
1211 coro->save = CORO_SAVE_DEF;
1212 coro->flags = CF_NEW; 1866 coro->flags = CF_NEW;
1213 1867
1868 if (coro_first) coro_first->prev = coro;
1869 coro->next = coro_first;
1870 coro_first = coro;
1871
1214 hv = newHV (); 1872 coro->hv = hv = newHV ();
1215 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1874 mg->mg_flags |= MGf_DUP;
1216 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1217 1876
1877 av_extend (coro->args, items - 1);
1218 for (i = 1; i < items; i++) 1878 for (i = 1; i < items; i++)
1219 av_push (coro->args, newSVsv (ST (i))); 1879 av_push (coro->args, newSVsv (ST (i)));
1220} 1880}
1221 OUTPUT: 1881 OUTPUT:
1222 RETVAL 1882 RETVAL
1223 1883
1224int 1884# these not obviously related functions are all rolled into the same xs
1225save (SV *coro, int new_save = -1) 1885# function to increase chances that they all will call transfer with the same
1226 CODE: 1886# stack offset
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 1887void
1243_set_stacklevel (...) 1888_set_stacklevel (...)
1244 ALIAS: 1889 ALIAS:
1245 Coro::State::transfer = 1 1890 Coro::State::transfer = 1
1246 Coro::schedule = 2 1891 Coro::schedule = 2
… …
1248 Coro::cede_notself = 4 1893 Coro::cede_notself = 4
1249 CODE: 1894 CODE:
1250{ 1895{
1251 struct transfer_args ta; 1896 struct transfer_args ta;
1252 1897
1898 PUTBACK;
1253 switch (ix) 1899 switch (ix)
1254 { 1900 {
1255 case 0: 1901 case 0:
1256 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1902 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1257 ta.next = 0; 1903 ta.next = 0;
1258 break; 1904 break;
1259 1905
1260 case 1: 1906 case 1:
1261 if (items != 2) 1907 if (items != 2)
1262 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1263 1909
1264 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1910 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1265 break; 1911 break;
1266 1912
1267 case 2: 1913 case 2:
… …
1276 if (!prepare_cede_notself (aTHX_ &ta)) 1922 if (!prepare_cede_notself (aTHX_ &ta))
1277 XSRETURN_EMPTY; 1923 XSRETURN_EMPTY;
1278 1924
1279 break; 1925 break;
1280 } 1926 }
1927 SPAGAIN;
1281 1928
1282 BARRIER; 1929 BARRIER;
1930 PUTBACK;
1283 TRANSFER (ta); 1931 TRANSFER (ta, 0);
1284 1932 SPAGAIN; /* might be the sp of a different coroutine now */
1285 if (GIMME_V != G_VOID && ta.next != ta.prev) 1933 /* be extra careful not to ever do anything after TRANSFER */
1286 XSRETURN_YES;
1287} 1934}
1288 1935
1289bool 1936bool
1290_destroy (SV *coro_sv) 1937_destroy (SV *coro_sv)
1291 CODE: 1938 CODE:
1292 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 1939 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1293 OUTPUT: 1940 OUTPUT:
1294 RETVAL 1941 RETVAL
1295 1942
1296void 1943void
1297_exit (code) 1944_exit (int code)
1298 int code
1299 PROTOTYPE: $ 1945 PROTOTYPE: $
1300 CODE: 1946 CODE:
1301 _exit (code); 1947 _exit (code);
1302 1948
1303int 1949int
1304cctx_stacksize (int new_stacksize = 0) 1950cctx_stacksize (int new_stacksize = 0)
1305 CODE: 1951 CODE:
1306 RETVAL = coro_stacksize; 1952 RETVAL = cctx_stacksize;
1307 if (new_stacksize) 1953 if (new_stacksize)
1954 {
1308 coro_stacksize = new_stacksize; 1955 cctx_stacksize = new_stacksize;
1956 ++cctx_gen;
1957 }
1958 OUTPUT:
1959 RETVAL
1960
1961int
1962cctx_max_idle (int max_idle = 0)
1963 CODE:
1964 RETVAL = cctx_max_idle;
1965 if (max_idle > 1)
1966 cctx_max_idle = max_idle;
1309 OUTPUT: 1967 OUTPUT:
1310 RETVAL 1968 RETVAL
1311 1969
1312int 1970int
1313cctx_count () 1971cctx_count ()
… …
1321 CODE: 1979 CODE:
1322 RETVAL = cctx_idle; 1980 RETVAL = cctx_idle;
1323 OUTPUT: 1981 OUTPUT:
1324 RETVAL 1982 RETVAL
1325 1983
1984void
1985list ()
1986 PPCODE:
1987{
1988 struct coro *coro;
1989 for (coro = coro_first; coro; coro = coro->next)
1990 if (coro->hv)
1991 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1992}
1993
1994void
1995call (Coro::State coro, SV *coderef)
1996 ALIAS:
1997 eval = 1
1998 CODE:
1999{
2000 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2001 {
2002 struct coro temp;
2003
2004 if (!(coro->flags & CF_RUNNING))
2005 {
2006 PUTBACK;
2007 save_perl (aTHX_ &temp);
2008 load_perl (aTHX_ coro);
2009 }
2010
2011 {
2012 dSP;
2013 ENTER;
2014 SAVETMPS;
2015 PUTBACK;
2016 PUSHSTACK;
2017 PUSHMARK (SP);
2018
2019 if (ix)
2020 eval_sv (coderef, 0);
2021 else
2022 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2023
2024 POPSTACK;
2025 SPAGAIN;
2026 FREETMPS;
2027 LEAVE;
2028 PUTBACK;
2029 }
2030
2031 if (!(coro->flags & CF_RUNNING))
2032 {
2033 save_perl (aTHX_ coro);
2034 load_perl (aTHX_ &temp);
2035 SPAGAIN;
2036 }
2037 }
2038}
2039
2040SV *
2041is_ready (Coro::State coro)
2042 PROTOTYPE: $
2043 ALIAS:
2044 is_ready = CF_READY
2045 is_running = CF_RUNNING
2046 is_new = CF_NEW
2047 is_destroyed = CF_DESTROYED
2048 CODE:
2049 RETVAL = boolSV (coro->flags & ix);
2050 OUTPUT:
2051 RETVAL
2052
2053void
2054api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2055
2056SV *
2057has_cctx (Coro::State coro)
2058 PROTOTYPE: $
2059 CODE:
2060 RETVAL = boolSV (!!coro->cctx);
2061 OUTPUT:
2062 RETVAL
2063
2064int
2065is_traced (Coro::State coro)
2066 PROTOTYPE: $
2067 CODE:
2068 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2069 OUTPUT:
2070 RETVAL
2071
2072UV
2073rss (Coro::State coro)
2074 PROTOTYPE: $
2075 ALIAS:
2076 usecount = 1
2077 CODE:
2078 switch (ix)
2079 {
2080 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2081 case 1: RETVAL = coro->usecount; break;
2082 }
2083 OUTPUT:
2084 RETVAL
2085
2086void
2087force_cctx ()
2088 CODE:
2089 struct coro *coro = SvSTATE (coro_current);
2090 coro->cctx->idle_sp = 0;
2091
2092void
2093swap_defsv (Coro::State self)
2094 PROTOTYPE: $
2095 ALIAS:
2096 swap_defav = 1
2097 CODE:
2098 if (!self->slot)
2099 croak ("cannot swap state with coroutine that has no saved state");
2100 else
2101 {
2102 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2103 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2104
2105 SV *tmp = *src; *src = *dst; *dst = tmp;
2106 }
2107
1326MODULE = Coro::State PACKAGE = Coro 2108MODULE = Coro::State PACKAGE = Coro
1327 2109
1328BOOT: 2110BOOT:
1329{ 2111{
1330 int i; 2112 int i;
1331 2113
2114 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2115 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2116 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2117
2118 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2119 SvREADONLY_on (coro_current);
2120
1332 coro_stash = gv_stashpv ("Coro", TRUE); 2121 coro_stash = gv_stashpv ("Coro", TRUE);
1333 2122
1334 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2123 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1335 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2124 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1336 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2125 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1337 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2126 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1338 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2127 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1339 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2128 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1340 2129
1341 coro_current = get_sv ("Coro::current", FALSE);
1342 SvREADONLY_on (coro_current);
1343
1344 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2130 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1345 coro_ready[i] = newAV (); 2131 coro_ready[i] = newAV ();
1346 2132
1347 { 2133 {
1348 SV *sv = perl_get_sv("Coro::API", 1); 2134 SV *sv = perl_get_sv ("Coro::API", TRUE);
2135 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1349 2136
1350 coroapi.schedule = api_schedule; 2137 coroapi.schedule = api_schedule;
1351 coroapi.save = api_save;
1352 coroapi.cede = api_cede; 2138 coroapi.cede = api_cede;
1353 coroapi.cede_notself = api_cede_notself; 2139 coroapi.cede_notself = api_cede_notself;
1354 coroapi.ready = api_ready; 2140 coroapi.ready = api_ready;
1355 coroapi.is_ready = api_is_ready; 2141 coroapi.is_ready = api_is_ready;
1356 coroapi.nready = &coro_nready; 2142 coroapi.nready = &coro_nready;
… …
1365void 2151void
1366_set_current (SV *current) 2152_set_current (SV *current)
1367 PROTOTYPE: $ 2153 PROTOTYPE: $
1368 CODE: 2154 CODE:
1369 SvREFCNT_dec (SvRV (coro_current)); 2155 SvREFCNT_dec (SvRV (coro_current));
1370 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2156 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2157
2158void
2159_set_readyhook (SV *hook)
2160 PROTOTYPE: $
2161 CODE:
2162 LOCK;
2163 SvREFCNT_dec (coro_readyhook);
2164 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2165 UNLOCK;
1371 2166
1372int 2167int
1373prio (Coro::State coro, int newprio = 0) 2168prio (Coro::State coro, int newprio = 0)
1374 ALIAS: 2169 ALIAS:
1375 nice = 1 2170 nice = 1
… …
1397 CODE: 2192 CODE:
1398 RETVAL = boolSV (api_ready (self)); 2193 RETVAL = boolSV (api_ready (self));
1399 OUTPUT: 2194 OUTPUT:
1400 RETVAL 2195 RETVAL
1401 2196
1402SV *
1403is_ready (SV *self)
1404 PROTOTYPE: $
1405 CODE:
1406 RETVAL = boolSV (api_is_ready (self));
1407 OUTPUT:
1408 RETVAL
1409
1410int 2197int
1411nready (...) 2198nready (...)
1412 PROTOTYPE: 2199 PROTOTYPE:
1413 CODE: 2200 CODE:
1414 RETVAL = coro_nready; 2201 RETVAL = coro_nready;
1415 OUTPUT: 2202 OUTPUT:
1416 RETVAL 2203 RETVAL
1417 2204
2205void
2206throw (Coro::State self, SV *throw = &PL_sv_undef)
2207 PROTOTYPE: $;$
2208 CODE:
2209 SvREFCNT_dec (self->throw);
2210 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2211
2212# for async_pool speedup
2213void
2214_pool_1 (SV *cb)
2215 CODE:
2216{
2217 struct coro *coro = SvSTATE (coro_current);
2218 HV *hv = (HV *)SvRV (coro_current);
2219 AV *defav = GvAV (PL_defgv);
2220 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2221 AV *invoke_av;
2222 int i, len;
2223
2224 if (!invoke)
2225 {
2226 SV *old = PL_diehook;
2227 PL_diehook = 0;
2228 SvREFCNT_dec (old);
2229 croak ("\3async_pool terminate\2\n");
2230 }
2231
2232 SvREFCNT_dec (coro->saved_deffh);
2233 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2234
2235 hv_store (hv, "desc", sizeof ("desc") - 1,
2236 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2237
2238 invoke_av = (AV *)SvRV (invoke);
2239 len = av_len (invoke_av);
2240
2241 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2242
2243 if (len > 0)
2244 {
2245 av_fill (defav, len - 1);
2246 for (i = 0; i < len; ++i)
2247 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2248 }
2249
2250 SvREFCNT_dec (invoke);
2251}
2252
2253void
2254_pool_2 (SV *cb)
2255 CODE:
2256{
2257 struct coro *coro = SvSTATE (coro_current);
2258
2259 sv_setsv (cb, &PL_sv_undef);
2260
2261 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2262 coro->saved_deffh = 0;
2263
2264 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2265 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2266 {
2267 SV *old = PL_diehook;
2268 PL_diehook = 0;
2269 SvREFCNT_dec (old);
2270 croak ("\3async_pool terminate\2\n");
2271 }
2272
2273 av_clear (GvAV (PL_defgv));
2274 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2275 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276
2277 coro->prio = 0;
2278
2279 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280 api_trace (coro_current, 0);
2281
2282 av_push (av_async_pool, newSVsv (coro_current));
2283}
2284
2285#if 0
2286
2287void
2288_generator_call (...)
2289 PROTOTYPE: @
2290 PPCODE:
2291 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2292 xxxx
2293 abort ();
2294
2295SV *
2296gensub (SV *sub, ...)
2297 PROTOTYPE: &;@
2298 CODE:
2299{
2300 struct coro *coro;
2301 MAGIC *mg;
2302 CV *xcv;
2303 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2304 int i;
2305
2306 CvGV (ncv) = CvGV (cv);
2307 CvFILE (ncv) = CvFILE (cv);
2308
2309 Newz (0, coro, 1, struct coro);
2310 coro->args = newAV ();
2311 coro->flags = CF_NEW;
2312
2313 av_extend (coro->args, items - 1);
2314 for (i = 1; i < items; i++)
2315 av_push (coro->args, newSVsv (ST (i)));
2316
2317 CvISXSUB_on (ncv);
2318 CvXSUBANY (ncv).any_ptr = (void *)coro;
2319
2320 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2321
2322 CvXSUB (ncv) = CvXSUB (xcv);
2323 CvANON_on (ncv);
2324
2325 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2326 RETVAL = newRV_noinc ((SV *)ncv);
2327}
2328 OUTPUT:
2329 RETVAL
2330
2331#endif
2332
2333
1418MODULE = Coro::State PACKAGE = Coro::AIO 2334MODULE = Coro::State PACKAGE = Coro::AIO
1419 2335
1420SV * 2336void
1421_get_state () 2337_get_state (SV *self)
1422 CODE: 2338 PPCODE:
1423{ 2339{
1424 struct io_state *data; 2340 AV *defav = GvAV (PL_defgv);
1425 2341 AV *av = newAV ();
2342 int i;
1426 RETVAL = newSV (sizeof (struct io_state)); 2343 SV *data_sv = newSV (sizeof (struct io_state));
1427 data = (struct io_state *)SvPVX (RETVAL); 2344 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1428 SvCUR_set (RETVAL, sizeof (struct io_state)); 2345 SvCUR_set (data_sv, sizeof (struct io_state));
1429 SvPOK_only (RETVAL); 2346 SvPOK_only (data_sv);
1430 2347
1431 data->errorno = errno; 2348 data->errorno = errno;
1432 data->laststype = PL_laststype; 2349 data->laststype = PL_laststype;
1433 data->laststatval = PL_laststatval; 2350 data->laststatval = PL_laststatval;
1434 data->statcache = PL_statcache; 2351 data->statcache = PL_statcache;
2352
2353 av_extend (av, AvFILLp (defav) + 1 + 1);
2354
2355 for (i = 0; i <= AvFILLp (defav); ++i)
2356 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2357
2358 av_push (av, data_sv);
2359
2360 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2361
2362 api_ready (self);
1435} 2363}
1436 OUTPUT:
1437 RETVAL
1438 2364
1439void 2365void
1440_set_state (char *data_) 2366_set_state (SV *state)
1441 PROTOTYPE: $ 2367 PROTOTYPE: $
1442 CODE: 2368 PPCODE:
1443{ 2369{
1444 struct io_state *data = (void *)data_; 2370 AV *av = (AV *)SvRV (state);
2371 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2372 int i;
1445 2373
1446 errno = data->errorno; 2374 errno = data->errorno;
1447 PL_laststype = data->laststype; 2375 PL_laststype = data->laststype;
1448 PL_laststatval = data->laststatval; 2376 PL_laststatval = data->laststatval;
1449 PL_statcache = data->statcache; 2377 PL_statcache = data->statcache;
1450}
1451 2378
2379 EXTEND (SP, AvFILLp (av));
2380 for (i = 0; i < AvFILLp (av); ++i)
2381 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2382}
2383
2384
2385MODULE = Coro::State PACKAGE = Coro::AnyEvent
2386
2387BOOT:
2388 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2389
2390SV *
2391_schedule (...)
2392 PROTOTYPE: @
2393 CODE:
2394{
2395 static int incede;
2396
2397 api_cede_notself ();
2398
2399 ++incede;
2400 while (coro_nready >= incede && api_cede ())
2401 ;
2402
2403 sv_setsv (sv_activity, &PL_sv_undef);
2404 if (coro_nready >= incede)
2405 {
2406 PUSHMARK (SP);
2407 PUTBACK;
2408 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2409 SPAGAIN;
2410 }
2411
2412 --incede;
2413}
2414
2415
2416MODULE = Coro::State PACKAGE = PerlIO::cede
2417
2418BOOT:
2419 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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