ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.149 by root, Sat Apr 14 15:06:05 2007 UTC vs.
Revision 1.254 by root, Fri Nov 7 20:27:47 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
114static perl_mutex coro_mutex; 147static perl_mutex coro_lock;
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
117#else 150#else
118# define LOCK (void)0 151# define LOCK (void)0
119# define UNLOCK (void)0 152# define UNLOCK (void)0
120#endif 153#endif
121 154
122/* helper storage struct for Coro::AIO */ 155/* helper storage struct for Coro::AIO */
123struct io_state 156struct io_state
124{ 157{
158 AV *res;
125 int errorno; 159 int errorno;
126 I32 laststype; 160 I32 laststype;
127 int laststatval; 161 int laststatval;
128 Stat_t statcache; 162 Stat_t statcache;
129}; 163};
130 164
165static double (*nvtime)(); /* so why doesn't it take void? */
166
167static U32 cctx_gen;
131static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 171static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174
175static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook;
178static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */
180
181/* async_pool helper stuff */
182static SV *sv_pool_rss;
183static SV *sv_pool_size;
184static AV *av_async_pool;
185
186/* Coro::AnyEvent */
187static SV *sv_activity;
137 188
138static struct coro_cctx *cctx_first; 189static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 190static int cctx_count, cctx_idle;
191
192enum {
193 CC_MAPPED = 0x01,
194 CC_NOREUSE = 0x02, /* throw this away after tracing */
195 CC_TRACE = 0x04,
196 CC_TRACE_SUB = 0x08, /* trace sub calls */
197 CC_TRACE_LINE = 0x10, /* trace each statement */
198 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
199};
140 200
141/* this is a structure representing a c-level coroutine */ 201/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 202typedef struct coro_cctx {
143 struct coro_cctx *next; 203 struct coro_cctx *next;
144 204
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 210 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 */ 211 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 212 JMPENV *top_env;
153 coro_context cctx; 213 coro_context cctx;
154 214
215 U32 gen;
155#if CORO_USE_VALGRIND 216#if CORO_USE_VALGRIND
156 int valgrind_id; 217 int valgrind_id;
157#endif 218#endif
158 char inuse, mapped; 219 unsigned char flags;
159} coro_cctx; 220} coro_cctx;
160 221
161enum { 222enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 223 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 224 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 225 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 226 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 227};
167 228
229/* the structure where most of the perl state is stored, overlaid on the cxstack */
230typedef struct {
231 SV *defsv;
232 AV *defav;
233 SV *errsv;
234 SV *irsgv;
235#define VAR(name,type) type name;
236# include "state.h"
237#undef VAR
238} perl_slots;
239
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241
168/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
169struct coro { 243struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 245 coro_cctx *cctx;
172 246
247 /* process data */
248 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */
250
173 /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 252 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */
178 255
179 /* optionally saved, might be zero */ 256 /* statistics */
180 AV *defav; /* @_ */ 257 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
190 258
191 /* coro process data */ 259 /* coro process data */
192 int prio; 260 int prio;
261 SV *throw; /* exception to be thrown */
262
263 /* async_pool */
264 SV *saved_deffh;
265
266 /* linked list */
267 struct coro *next, *prev;
193}; 268};
194 269
195typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
196typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
197 272
… …
204#define PRIO_IDLE -3 279#define PRIO_IDLE -3
205#define PRIO_MIN -4 280#define PRIO_MIN -4
206 281
207/* for Coro.pm */ 282/* for Coro.pm */
208static SV *coro_current; 283static SV *coro_current;
284static SV *coro_readyhook;
209static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 285static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
210static int coro_nready; 286static int coro_nready;
287static struct coro *coro_first;
211 288
212/** lowlevel stuff **********************************************************/ 289/** lowlevel stuff **********************************************************/
290
291static SV *
292coro_get_sv (pTHX_ const char *name, int create)
293{
294#if PERL_VERSION_ATLEAST (5,10,0)
295 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
296 get_sv (name, create);
297#endif
298 return get_sv (name, create);
299}
300
301static AV *
302coro_get_av (pTHX_ const char *name, int create)
303{
304#if PERL_VERSION_ATLEAST (5,10,0)
305 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
306 get_av (name, create);
307#endif
308 return get_av (name, create);
309}
310
311static HV *
312coro_get_hv (pTHX_ const char *name, int create)
313{
314#if PERL_VERSION_ATLEAST (5,10,0)
315 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
316 get_hv (name, create);
317#endif
318 return get_hv (name, create);
319}
213 320
214static AV * 321static AV *
215coro_clone_padlist (pTHX_ CV *cv) 322coro_clone_padlist (pTHX_ CV *cv)
216{ 323{
217 AV *padlist = CvPADLIST (cv); 324 AV *padlist = CvPADLIST (cv);
218 AV *newpadlist, *newpad; 325 AV *newpadlist, *newpad;
219 326
220 newpadlist = newAV (); 327 newpadlist = newAV ();
221 AvREAL_off (newpadlist); 328 AvREAL_off (newpadlist);
222#if PERL_VERSION_ATLEAST (5,9,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
223 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
224#else 331#else
225 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
226#endif 333#endif
227 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
228 --AvFILLp (padlist); 335 --AvFILLp (padlist);
229 336
230 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
231 av_store (newpadlist, 1, (SV *)newpad); 338 av_store (newpadlist, 1, (SV *)newpad);
232 339
233 return newpadlist; 340 return newpadlist;
234} 341}
235 342
… …
265 372
266 /* casting is fun. */ 373 /* casting is fun. */
267 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268 free_padlist (aTHX_ padlist); 375 free_padlist (aTHX_ padlist);
269 376
270 SvREFCNT_dec (av); 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
271 378
272 return 0; 379 return 0;
273} 380}
274 381
275#define PERL_MAGIC_coro PERL_MAGIC_ext 382#define CORO_MAGIC_type_cv PERL_MAGIC_ext
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
276 384
277static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 385static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0,
387 coro_cv_free
388};
278 389
279#define CORO_MAGIC(cv) \ 390#define CORO_MAGIC(sv, type) \
280 SvMAGIC (cv) \ 391 SvMAGIC (sv) \
281 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 392 ? SvMAGIC (sv)->mg_type == type \
282 ? SvMAGIC (cv) \ 393 ? SvMAGIC (sv) \
283 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 394 : mg_find (sv, type) \
284 : 0 395 : 0
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
399
400static struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
285 425
286/* the next two functions merely cache the padlists */ 426/* the next two functions merely cache the padlists */
287static void 427static void
288get_padlist (pTHX_ CV *cv) 428get_padlist (pTHX_ CV *cv)
289{ 429{
290 MAGIC *mg = CORO_MAGIC (cv); 430 MAGIC *mg = CORO_MAGIC_cv (cv);
291 AV *av; 431 AV *av;
292 432
293 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 433 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 434 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 435 else
296 { 436 {
297#if CORO_PREFER_PERL_FUNCTIONS 437#if CORO_PREFER_PERL_FUNCTIONS
298 /* this is probably cleaner, but also slower? */ 438 /* this is probably cleaner? but also slower! */
439 /* in practise, it seems to be less stable */
299 CV *cp = Perl_cv_clone (cv); 440 CV *cp = Perl_cv_clone (cv);
300 CvPADLIST (cv) = CvPADLIST (cp); 441 CvPADLIST (cv) = CvPADLIST (cp);
301 CvPADLIST (cp) = 0; 442 CvPADLIST (cp) = 0;
302 SvREFCNT_dec (cp); 443 SvREFCNT_dec (cp);
303#else 444#else
… …
307} 448}
308 449
309static void 450static void
310put_padlist (pTHX_ CV *cv) 451put_padlist (pTHX_ CV *cv)
311{ 452{
312 MAGIC *mg = CORO_MAGIC (cv); 453 MAGIC *mg = CORO_MAGIC_cv (cv);
313 AV *av; 454 AV *av;
314 455
315 if (!mg) 456 if (expect_false (!mg))
316 { 457 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 }
322 458
323 av = (AV *)mg->mg_obj; 459 av = (AV *)mg->mg_obj;
324 460
325 if (AvFILLp (av) >= AvMAX (av)) 461 if (expect_false (AvFILLp (av) >= AvMAX (av)))
326 av_extend (av, AvMAX (av) + 1); 462 av_extend (av, AvMAX (av) + 1);
327 463
328 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 464 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329} 465}
330 466
331/** load & save, init *******************************************************/ 467/** 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
337 468
338static void 469static void
339load_perl (pTHX_ Coro__State c) 470load_perl (pTHX_ Coro__State c)
340{ 471{
472 perl_slots *slot = c->slot;
473 c->slot = 0;
474
475 PL_mainstack = c->mainstack;
476
477 GvSV (PL_defgv) = slot->defsv;
478 GvAV (PL_defgv) = slot->defav;
479 GvSV (PL_errgv) = slot->errsv;
480 GvSV (irsgv) = slot->irsgv;
481
341#define VAR(name,type) PL_ ## name = c->name; 482 #define VAR(name,type) PL_ ## name = slot->name;
342# include "state.h" 483 # include "state.h"
343#undef VAR 484 #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 }
364 485
365 { 486 {
366 dSP; 487 dSP;
488
367 CV *cv; 489 CV *cv;
368 490
369 /* now do the ugly restore mess */ 491 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 492 while (expect_true (cv = (CV *)POPs))
371 { 493 {
372 put_padlist (aTHX_ cv); /* mark this padlist as available */ 494 put_padlist (aTHX_ cv); /* mark this padlist as available */
373 CvDEPTH (cv) = PTR2IV (POPs); 495 CvDEPTH (cv) = PTR2IV (POPs);
374 CvPADLIST (cv) = (AV *)POPs; 496 CvPADLIST (cv) = (AV *)POPs;
375 } 497 }
376 498
377 PUTBACK; 499 PUTBACK;
378 } 500 }
379 assert (!PL_comppad || AvARRAY (PL_comppad));//D
380} 501}
381 502
382static void 503static void
383save_perl (pTHX_ Coro__State c) 504save_perl (pTHX_ Coro__State c)
384{ 505{
385 assert (!PL_comppad || AvARRAY (PL_comppad));//D
386 { 506 {
387 dSP; 507 dSP;
388 I32 cxix = cxstack_ix; 508 I32 cxix = cxstack_ix;
389 PERL_CONTEXT *ccstk = cxstack; 509 PERL_CONTEXT *ccstk = cxstack;
390 PERL_SI *top_si = PL_curstackinfo; 510 PERL_SI *top_si = PL_curstackinfo;
… …
392 /* 512 /*
393 * the worst thing you can imagine happens first - we have to save 513 * the worst thing you can imagine happens first - we have to save
394 * (and reinitialize) all cv's in the whole callchain :( 514 * (and reinitialize) all cv's in the whole callchain :(
395 */ 515 */
396 516
397 EXTEND (SP, 3 + 1);
398 PUSHs (Nullsv); 517 XPUSHs (Nullsv);
399 /* this loop was inspired by pp_caller */ 518 /* this loop was inspired by pp_caller */
400 for (;;) 519 for (;;)
401 { 520 {
402 while (cxix >= 0) 521 while (expect_true (cxix >= 0))
403 { 522 {
404 PERL_CONTEXT *cx = &ccstk[cxix--]; 523 PERL_CONTEXT *cx = &ccstk[cxix--];
405 524
406 if (CxTYPE (cx) == CXt_SUB) 525 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407 { 526 {
408 CV *cv = cx->blk_sub.cv; 527 CV *cv = cx->blk_sub.cv;
409 528
410 if (CvDEPTH (cv)) 529 if (expect_true (CvDEPTH (cv)))
411 { 530 {
412 EXTEND (SP, 3); 531 EXTEND (SP, 3);
413 PUSHs ((SV *)CvPADLIST (cv)); 532 PUSHs ((SV *)CvPADLIST (cv));
414 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 533 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
415 PUSHs ((SV *)cv); 534 PUSHs ((SV *)cv);
416 535
417 CvDEPTH (cv) = 0; 536 CvDEPTH (cv) = 0;
418 get_padlist (aTHX_ cv); 537 get_padlist (aTHX_ cv);
419 } 538 }
420 } 539 }
421 } 540 }
422 541
423 if (top_si->si_type == PERLSI_MAIN) 542 if (expect_true (top_si->si_type == PERLSI_MAIN))
424 break; 543 break;
425 544
426 top_si = top_si->si_prev; 545 top_si = top_si->si_prev;
427 ccstk = top_si->si_cxstack; 546 ccstk = top_si->si_cxstack;
428 cxix = top_si->si_cxix; 547 cxix = top_si->si_cxix;
429 } 548 }
430 549
431 PUTBACK; 550 PUTBACK;
432 } 551 }
433 552
434 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 553 /* allocate some space on the context stack for our purposes */
435 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 554 /* we manually unroll here, as usually 2 slots is enough */
436 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 555 if (SLOT_COUNT >= 1) CXINC;
437 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 556 if (SLOT_COUNT >= 2) CXINC;
438 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 557 if (SLOT_COUNT >= 3) CXINC;
558 {
559 int i;
560 for (i = 3; i < SLOT_COUNT; ++i)
561 CXINC;
562 }
563 cxstack_ix -= SLOT_COUNT; /* undo allocation */
439 564
565 c->mainstack = PL_mainstack;
566
567 {
568 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
569
570 slot->defav = GvAV (PL_defgv);
571 slot->defsv = DEFSV;
572 slot->errsv = ERRSV;
573 slot->irsgv = GvSV (irsgv);
574
440#define VAR(name,type)c->name = PL_ ## name; 575 #define VAR(name,type) slot->name = PL_ ## name;
441# include "state.h" 576 # include "state.h"
442#undef VAR 577 #undef VAR
578 }
443} 579}
444 580
445/* 581/*
446 * allocate various perl stacks. This is an exact copy 582 * allocate various perl stacks. This is an exact copy
447 * of perl.c:init_stacks, except that it uses less memory 583 * of perl.c:init_stacks, except that it uses less memory
… …
452# define coro_init_stacks init_stacks 588# define coro_init_stacks init_stacks
453#else 589#else
454static void 590static void
455coro_init_stacks (pTHX) 591coro_init_stacks (pTHX)
456{ 592{
457 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 593 PL_curstackinfo = new_stackinfo(32, 8);
458 PL_curstackinfo->si_type = PERLSI_MAIN; 594 PL_curstackinfo->si_type = PERLSI_MAIN;
459 PL_curstack = PL_curstackinfo->si_stack; 595 PL_curstack = PL_curstackinfo->si_stack;
460 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 596 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461 597
462 PL_stack_base = AvARRAY(PL_curstack); 598 PL_stack_base = AvARRAY(PL_curstack);
463 PL_stack_sp = PL_stack_base; 599 PL_stack_sp = PL_stack_base;
464 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 600 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465 601
466 New(50,PL_tmps_stack,128,SV*); 602 New(50,PL_tmps_stack,32,SV*);
467 PL_tmps_floor = -1; 603 PL_tmps_floor = -1;
468 PL_tmps_ix = -1; 604 PL_tmps_ix = -1;
469 PL_tmps_max = 128; 605 PL_tmps_max = 32;
470 606
471 New(54,PL_markstack,32,I32); 607 New(54,PL_markstack,16,I32);
472 PL_markstack_ptr = PL_markstack; 608 PL_markstack_ptr = PL_markstack;
473 PL_markstack_max = PL_markstack + 32; 609 PL_markstack_max = PL_markstack + 16;
474 610
475#ifdef SET_MARK_OFFSET 611#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 612 SET_MARK_OFFSET;
477#endif 613#endif
478 614
479 New(54,PL_scopestack,32,I32); 615 New(54,PL_scopestack,8,I32);
480 PL_scopestack_ix = 0; 616 PL_scopestack_ix = 0;
481 PL_scopestack_max = 32; 617 PL_scopestack_max = 8;
482 618
483 New(54,PL_savestack,64,ANY); 619 New(54,PL_savestack,24,ANY);
484 PL_savestack_ix = 0; 620 PL_savestack_ix = 0;
485 PL_savestack_max = 64; 621 PL_savestack_max = 24;
486 622
487#if !PERL_VERSION_ATLEAST (5,9,0) 623#if !PERL_VERSION_ATLEAST (5,10,0)
488 New(54,PL_retstack,16,OP*); 624 New(54,PL_retstack,4,OP*);
489 PL_retstack_ix = 0; 625 PL_retstack_ix = 0;
490 PL_retstack_max = 16; 626 PL_retstack_max = 4;
491#endif 627#endif
492} 628}
493#endif 629#endif
494 630
495/* 631/*
496 * destroy the stacks, the callchain etc... 632 * destroy the stacks, the callchain etc...
497 */ 633 */
498static void 634static void
499coro_destroy_stacks (pTHX) 635coro_destruct_stacks (pTHX)
500{ 636{
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) 637 while (PL_curstackinfo->si_next)
519 PL_curstackinfo = PL_curstackinfo->si_next; 638 PL_curstackinfo = PL_curstackinfo->si_next;
520 639
521 while (PL_curstackinfo) 640 while (PL_curstackinfo)
522 { 641 {
… …
532 651
533 Safefree (PL_tmps_stack); 652 Safefree (PL_tmps_stack);
534 Safefree (PL_markstack); 653 Safefree (PL_markstack);
535 Safefree (PL_scopestack); 654 Safefree (PL_scopestack);
536 Safefree (PL_savestack); 655 Safefree (PL_savestack);
537#if !PERL_VERSION_ATLEAST (5,9,0) 656#if !PERL_VERSION_ATLEAST (5,10,0)
538 Safefree (PL_retstack); 657 Safefree (PL_retstack);
539#endif 658#endif
540} 659}
541 660
661static size_t
662coro_rss (pTHX_ struct coro *coro)
663{
664 size_t rss = sizeof (*coro);
665
666 if (coro->mainstack)
667 {
668 perl_slots tmp_slot;
669 perl_slots *slot;
670
671 if (coro->flags & CF_RUNNING)
672 {
673 slot = &tmp_slot;
674
675 #define VAR(name,type) slot->name = PL_ ## name;
676 # include "state.h"
677 #undef VAR
678 }
679 else
680 slot = coro->slot;
681
682 if (slot)
683 {
684 rss += sizeof (slot->curstackinfo);
685 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
686 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
687 rss += slot->tmps_max * sizeof (SV *);
688 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
689 rss += slot->scopestack_max * sizeof (I32);
690 rss += slot->savestack_max * sizeof (ANY);
691
692#if !PERL_VERSION_ATLEAST (5,10,0)
693 rss += slot->retstack_max * sizeof (OP *);
694#endif
695 }
696 }
697
698 return rss;
699}
700
542/** coroutine stack handling ************************************************/ 701/** coroutine stack handling ************************************************/
543 702
703static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
704static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
705static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
706
707/* apparently < 5.8.8 */
708#ifndef MgPV_nolen_const
709#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
710 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
711 (const char*)(mg)->mg_ptr)
712#endif
713
714/*
715 * This overrides the default magic get method of %SIG elements.
716 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
717 * and instead of tryign to save and restore the hash elements, we just provide
718 * readback here.
719 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
720 * not expecting this to actually change the hook. This is a potential problem
721 * when a schedule happens then, but we ignore this.
722 */
723static int
724coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
725{
726 const char *s = MgPV_nolen_const (mg);
727
728 if (*s == '_')
729 {
730 SV **svp = 0;
731
732 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
733 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
734
735 if (svp)
736 {
737 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
738 return 0;
739 }
740 }
741
742 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
743}
744
745static int
746coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
747{
748 const char *s = MgPV_nolen_const (mg);
749
750 if (*s == '_')
751 {
752 SV **svp = 0;
753
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp)
758 {
759 SV *old = *svp;
760 *svp = 0;
761 SvREFCNT_dec (old);
762 return 0;
763 }
764 }
765
766 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
767}
768
769static int
770coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
771{
772 const char *s = MgPV_nolen_const (mg);
773
774 if (*s == '_')
775 {
776 SV **svp = 0;
777
778 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
779 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
780
781 if (svp)
782 {
783 SV *old = *svp;
784 *svp = newSVsv (sv);
785 SvREFCNT_dec (old);
786 return 0;
787 }
788 }
789
790 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
791}
792
544static void 793static void
545setup_coro (pTHX_ struct coro *coro) 794coro_setup (pTHX_ struct coro *coro)
546{ 795{
547 /* 796 /*
548 * emulate part of the perl startup here. 797 * emulate part of the perl startup here.
549 */ 798 */
550 coro_init_stacks (aTHX); 799 coro_init_stacks (aTHX);
551 800
801 PL_runops = RUNOPS_DEFAULT;
552 PL_curcop = &PL_compiling; 802 PL_curcop = &PL_compiling;
553 PL_in_eval = EVAL_NULL; 803 PL_in_eval = EVAL_NULL;
554 PL_comppad = 0; 804 PL_comppad = 0;
555 PL_curpm = 0; 805 PL_curpm = 0;
806 PL_curpad = 0;
556 PL_localizing = 0; 807 PL_localizing = 0;
557 PL_dirty = 0; 808 PL_dirty = 0;
558 PL_restartop = 0; 809 PL_restartop = 0;
810#if PERL_VERSION_ATLEAST (5,10,0)
811 PL_parser = 0;
812#endif
813
814 /* recreate the die/warn hooks */
815 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
816 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
817
818 GvSV (PL_defgv) = newSV (0);
819 GvAV (PL_defgv) = coro->args; coro->args = 0;
820 GvSV (PL_errgv) = newSV (0);
821 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
822 PL_rs = newSVsv (GvSV (irsgv));
823 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
559 824
560 { 825 {
561 dSP; 826 dSP;
562 LOGOP myop; 827 LOGOP myop;
563 828
564 SvREFCNT_dec (GvAV (PL_defgv));
565 GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567 Zero (&myop, 1, LOGOP); 829 Zero (&myop, 1, LOGOP);
568 myop.op_next = Nullop; 830 myop.op_next = Nullop;
569 myop.op_flags = OPf_WANT_VOID; 831 myop.op_flags = OPf_WANT_VOID;
570 832
571 PUSHMARK (SP); 833 PUSHMARK (SP);
572 XPUSHs (av_shift (GvAV (PL_defgv))); 834 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573 PUTBACK; 835 PUTBACK;
574 PL_op = (OP *)&myop; 836 PL_op = (OP *)&myop;
575 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 837 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576 SPAGAIN; 838 SPAGAIN;
577 } 839 }
578 840
579 ENTER; /* necessary e.g. for dounwind */ 841 /* this newly created coroutine might be run on an existing cctx which most
842 * likely was suspended in set_stacklevel, called from entersub.
843 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
844 * so we ENTER here for symmetry
845 */
846 ENTER;
847}
848
849static void
850coro_destruct (pTHX_ struct coro *coro)
851{
852 if (!IN_DESTRUCT)
853 {
854 /* restore all saved variables and stuff */
855 LEAVE_SCOPE (0);
856 assert (PL_tmps_floor == -1);
857
858 /* free all temporaries */
859 FREETMPS;
860 assert (PL_tmps_ix == -1);
861
862 /* unwind all extra stacks */
863 POPSTACK_TO (PL_mainstack);
864
865 /* unwind main stack */
866 dounwind (-1);
867 }
868
869 SvREFCNT_dec (GvSV (PL_defgv));
870 SvREFCNT_dec (GvAV (PL_defgv));
871 SvREFCNT_dec (GvSV (PL_errgv));
872 SvREFCNT_dec (PL_defoutgv);
873 SvREFCNT_dec (PL_rs);
874 SvREFCNT_dec (GvSV (irsgv));
875
876 SvREFCNT_dec (PL_diehook);
877 SvREFCNT_dec (PL_warnhook);
878
879 SvREFCNT_dec (coro->saved_deffh);
880 SvREFCNT_dec (coro->throw);
881
882 coro_destruct_stacks (aTHX);
580} 883}
581 884
582static void 885static void
583free_coro_mortal (pTHX) 886free_coro_mortal (pTHX)
584{ 887{
585 if (coro_mortal) 888 if (expect_true (coro_mortal))
586 { 889 {
587 SvREFCNT_dec (coro_mortal); 890 SvREFCNT_dec (coro_mortal);
588 coro_mortal = 0; 891 coro_mortal = 0;
589 } 892 }
590} 893}
591 894
895static int
896runops_trace (pTHX)
897{
898 COP *oldcop = 0;
899 int oldcxix = -2;
900 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
901 coro_cctx *cctx = coro->cctx;
902
903 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
904 {
905 PERL_ASYNC_CHECK ();
906
907 if (cctx->flags & CC_TRACE_ALL)
908 {
909 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
910 {
911 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
912 SV **bot, **top;
913 AV *av = newAV (); /* return values */
914 SV **cb;
915 dSP;
916
917 GV *gv = CvGV (cx->blk_sub.cv);
918 SV *fullname = sv_2mortal (newSV (0));
919 if (isGV (gv))
920 gv_efullname3 (fullname, gv, 0);
921
922 bot = PL_stack_base + cx->blk_oldsp + 1;
923 top = cx->blk_gimme == G_ARRAY ? SP + 1
924 : cx->blk_gimme == G_SCALAR ? bot + 1
925 : bot;
926
927 av_extend (av, top - bot);
928 while (bot < top)
929 av_push (av, SvREFCNT_inc_NN (*bot++));
930
931 PL_runops = RUNOPS_DEFAULT;
932 ENTER;
933 SAVETMPS;
934 EXTEND (SP, 3);
935 PUSHMARK (SP);
936 PUSHs (&PL_sv_no);
937 PUSHs (fullname);
938 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
939 PUTBACK;
940 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
941 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
942 SPAGAIN;
943 FREETMPS;
944 LEAVE;
945 PL_runops = runops_trace;
946 }
947
948 if (oldcop != PL_curcop)
949 {
950 oldcop = PL_curcop;
951
952 if (PL_curcop != &PL_compiling)
953 {
954 SV **cb;
955
956 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
957 {
958 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
959
960 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
961 {
962 runops_proc_t old_runops = PL_runops;
963 dSP;
964 GV *gv = CvGV (cx->blk_sub.cv);
965 SV *fullname = sv_2mortal (newSV (0));
966
967 if (isGV (gv))
968 gv_efullname3 (fullname, gv, 0);
969
970 PL_runops = RUNOPS_DEFAULT;
971 ENTER;
972 SAVETMPS;
973 EXTEND (SP, 3);
974 PUSHMARK (SP);
975 PUSHs (&PL_sv_yes);
976 PUSHs (fullname);
977 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
978 PUTBACK;
979 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
980 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
981 SPAGAIN;
982 FREETMPS;
983 LEAVE;
984 PL_runops = runops_trace;
985 }
986
987 oldcxix = cxstack_ix;
988 }
989
990 if (cctx->flags & CC_TRACE_LINE)
991 {
992 dSP;
993
994 PL_runops = RUNOPS_DEFAULT;
995 ENTER;
996 SAVETMPS;
997 EXTEND (SP, 3);
998 PL_runops = RUNOPS_DEFAULT;
999 PUSHMARK (SP);
1000 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1001 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1002 PUTBACK;
1003 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1004 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1005 SPAGAIN;
1006 FREETMPS;
1007 LEAVE;
1008 PL_runops = runops_trace;
1009 }
1010 }
1011 }
1012 }
1013 }
1014
1015 TAINT_NOT;
1016 return 0;
1017}
1018
592/* inject a fake call to Coro::State::_cctx_init into the execution */ 1019/* inject a fake call to Coro::State::_cctx_init into the execution */
593/* _cctx_init shoukld be careful, as it could be called at almost any time */ 1020/* _cctx_init should be careful, as it could be called at almost any time */
594/* during execution of a pelr program */ 1021/* during execution of a perl program */
595static void NOINLINE 1022static void NOINLINE
596prepare_cctx (pTHX_ coro_cctx *cctx) 1023cctx_prepare (pTHX_ coro_cctx *cctx)
597{ 1024{
598 dSP; 1025 dSP;
599 LOGOP myop; 1026 LOGOP myop;
1027
1028 PL_top_env = &PL_start_env;
1029
1030 if (cctx->flags & CC_TRACE)
1031 PL_runops = runops_trace;
600 1032
601 Zero (&myop, 1, LOGOP); 1033 Zero (&myop, 1, LOGOP);
602 myop.op_next = PL_op; 1034 myop.op_next = PL_op;
603 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1035 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604 1036
… …
614 1046
615/* 1047/*
616 * this is a _very_ stripped down perl interpreter ;) 1048 * this is a _very_ stripped down perl interpreter ;)
617 */ 1049 */
618static void 1050static void
619coro_run (void *arg) 1051cctx_run (void *arg)
620{ 1052{
621 dTHX; 1053 dTHX;
622 1054
623 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1055 /* cctx_run is the alternative tail of transfer(), so unlock here. */
624 UNLOCK; 1056 UNLOCK;
625 1057
626 PL_top_env = &PL_start_env; 1058 /* we now skip the entersub that lead to transfer() */
1059 PL_op = PL_op->op_next;
627 1060
628 /* inject a fake subroutine call to cctx_init */ 1061 /* inject a fake subroutine call to cctx_init */
629 prepare_cctx (aTHX_ (coro_cctx *)arg); 1062 cctx_prepare (aTHX_ (coro_cctx *)arg);
630 1063
631 /* somebody or something will hit me for both perl_run and PL_restartop */ 1064 /* somebody or something will hit me for both perl_run and PL_restartop */
632 PL_restartop = PL_op; 1065 PL_restartop = PL_op;
633 perl_run (PL_curinterp); 1066 perl_run (PL_curinterp);
634 1067
… …
649 coro_cctx *cctx; 1082 coro_cctx *cctx;
650 void *stack_start; 1083 void *stack_start;
651 size_t stack_size; 1084 size_t stack_size;
652 1085
653 ++cctx_count; 1086 ++cctx_count;
654
655 Newz (0, cctx, 1, coro_cctx); 1087 Newz (0, cctx, 1, coro_cctx);
656 1088
1089 cctx->gen = cctx_gen;
1090
657#if HAVE_MMAP 1091#if HAVE_MMAP
658
659 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1092 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
660 /* mmap supposedly does allocate-on-write for us */ 1093 /* 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); 1094 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
662 1095
663 if (cctx->sptr != (void *)-1) 1096 if (cctx->sptr != (void *)-1)
664 { 1097 {
665# if CORO_STACKGUARD 1098# if CORO_STACKGUARD
666 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1099 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
667# endif 1100# endif
668 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1101 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
669 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1102 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
670 cctx->mapped = 1; 1103 cctx->flags |= CC_MAPPED;
671 } 1104 }
672 else 1105 else
673#endif 1106#endif
674 { 1107 {
675 cctx->ssize = coro_stacksize * (long)sizeof (long); 1108 cctx->ssize = cctx_stacksize * (long)sizeof (long);
676 New (0, cctx->sptr, coro_stacksize, long); 1109 New (0, cctx->sptr, cctx_stacksize, long);
677 1110
678 if (!cctx->sptr) 1111 if (!cctx->sptr)
679 { 1112 {
680 perror ("FATAL: unable to allocate stack for coroutine"); 1113 perror ("FATAL: unable to allocate stack for coroutine");
681 _exit (EXIT_FAILURE); 1114 _exit (EXIT_FAILURE);
… …
684 stack_start = cctx->sptr; 1117 stack_start = cctx->sptr;
685 stack_size = cctx->ssize; 1118 stack_size = cctx->ssize;
686 } 1119 }
687 1120
688 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1121 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
689 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1122 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
690 1123
691 return cctx; 1124 return cctx;
692} 1125}
693 1126
694static void 1127static void
… …
696{ 1129{
697 if (!cctx) 1130 if (!cctx)
698 return; 1131 return;
699 1132
700 --cctx_count; 1133 --cctx_count;
1134 coro_destroy (&cctx->cctx);
701 1135
1136 /* coro_transfer creates new, empty cctx's */
1137 if (cctx->sptr)
1138 {
702#if CORO_USE_VALGRIND 1139#if CORO_USE_VALGRIND
703 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1140 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
704#endif 1141#endif
705 1142
706#if HAVE_MMAP 1143#if HAVE_MMAP
707 if (cctx->mapped) 1144 if (cctx->flags & CC_MAPPED)
708 munmap (cctx->sptr, cctx->ssize); 1145 munmap (cctx->sptr, cctx->ssize);
709 else 1146 else
710#endif 1147#endif
711 Safefree (cctx->sptr); 1148 Safefree (cctx->sptr);
1149 }
712 1150
713 Safefree (cctx); 1151 Safefree (cctx);
714} 1152}
1153
1154/* wether this cctx should be destructed */
1155#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
715 1156
716static coro_cctx * 1157static coro_cctx *
717cctx_get (pTHX) 1158cctx_get (pTHX)
718{ 1159{
719 while (cctx_first) 1160 while (expect_true (cctx_first))
720 { 1161 {
721 coro_cctx *cctx = cctx_first; 1162 coro_cctx *cctx = cctx_first;
722 cctx_first = cctx->next; 1163 cctx_first = cctx->next;
723 --cctx_idle; 1164 --cctx_idle;
724 1165
725 if (cctx->ssize >= coro_stacksize) 1166 if (expect_true (!CCTX_EXPIRED (cctx)))
726 return cctx; 1167 return cctx;
727 1168
728 cctx_destroy (cctx); 1169 cctx_destroy (cctx);
729 } 1170 }
730 1171
731 PL_op = PL_op->op_next;
732 return cctx_new (); 1172 return cctx_new ();
733} 1173}
734 1174
735static void 1175static void
736cctx_put (coro_cctx *cctx) 1176cctx_put (coro_cctx *cctx)
737{ 1177{
1178 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1179
738 /* free another cctx if overlimit */ 1180 /* free another cctx if overlimit */
739 if (cctx_idle >= MAX_IDLE_CCTX) 1181 if (expect_false (cctx_idle >= cctx_max_idle))
740 { 1182 {
741 coro_cctx *first = cctx_first; 1183 coro_cctx *first = cctx_first;
742 cctx_first = first->next; 1184 cctx_first = first->next;
743 --cctx_idle; 1185 --cctx_idle;
744 1186
745 assert (!first->inuse);
746 cctx_destroy (first); 1187 cctx_destroy (first);
747 } 1188 }
748 1189
749 ++cctx_idle; 1190 ++cctx_idle;
750 cctx->next = cctx_first; 1191 cctx->next = cctx_first;
751 cctx_first = cctx; 1192 cctx_first = cctx;
752} 1193}
753 1194
754/** coroutine switching *****************************************************/ 1195/** coroutine switching *****************************************************/
755 1196
756/* never call directly, always through the coro_state_transfer global variable */ 1197static void
1198transfer_check (pTHX_ struct coro *prev, struct coro *next)
1199{
1200 if (expect_true (prev != next))
1201 {
1202 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1203 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1204
1205 if (expect_false (next->flags & CF_RUNNING))
1206 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1207
1208 if (expect_false (next->flags & CF_DESTROYED))
1209 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1210
1211#if !PERL_VERSION_ATLEAST (5,10,0)
1212 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1213 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1214#endif
1215 }
1216}
1217
1218/* always use the TRANSFER macro */
757static void NOINLINE 1219static void NOINLINE
758transfer (pTHX_ struct coro *prev, struct coro *next) 1220transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
759{ 1221{
760 dSTACKLEVEL; 1222 dSTACKLEVEL;
761 1223
762 /* sometimes transfer is only called to set idle_sp */ 1224 /* sometimes transfer is only called to set idle_sp */
763 if (!next) 1225 if (expect_false (!next))
764 { 1226 {
765 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1227 ((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 */ 1228 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
767 } 1229 }
768 else if (prev != next) 1230 else if (expect_true (prev != next))
769 { 1231 {
1232 static volatile int has_throw;
770 coro_cctx *prev__cctx; 1233 coro_cctx *prev__cctx;
771 1234
772 if (prev->flags & CF_NEW) 1235 if (expect_false (prev->flags & CF_NEW))
773 { 1236 {
774 /* create a new empty context */ 1237 /* create a new empty/source context */
1238 ++cctx_count;
775 Newz (0, prev->cctx, 1, coro_cctx); 1239 New (0, prev->cctx, 1, coro_cctx);
776 prev->cctx->inuse = 1; 1240 prev->cctx->sptr = 0;
1241 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1242
777 prev->flags &= ~CF_NEW; 1243 prev->flags &= ~CF_NEW;
778 prev->flags |= CF_RUNNING; 1244 prev->flags |= CF_RUNNING;
779 } 1245 }
780 1246
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; 1247 prev->flags &= ~CF_RUNNING;
792 next->flags |= CF_RUNNING; 1248 next->flags |= CF_RUNNING;
793 1249
794 LOCK; 1250 LOCK;
795 1251
1252 /* first get rid of the old state */
1253 save_perl (aTHX_ prev);
1254
796 if (next->flags & CF_NEW) 1255 if (expect_false (next->flags & CF_NEW))
797 { 1256 {
798 /* need to start coroutine */ 1257 /* need to start coroutine */
799 next->flags &= ~CF_NEW; 1258 next->flags &= ~CF_NEW;
800 /* first get rid of the old state */
801 save_perl (aTHX_ prev);
802 /* setup coroutine call */ 1259 /* setup coroutine call */
803 setup_coro (aTHX_ next); 1260 coro_setup (aTHX_ next);
804 /* need a new stack */
805 assert (!next->cctx);
806 } 1261 }
807 else 1262 else
808 {
809 /* coroutine already started */
810 save_perl (aTHX_ prev);
811 load_perl (aTHX_ next); 1263 load_perl (aTHX_ next);
812 }
813 1264
814 prev__cctx = prev->cctx; 1265 prev__cctx = prev->cctx;
815 1266
816 /* possibly "free" the cctx */ 1267 /* possibly "free" the cctx */
1268 if (expect_true (
817 if (prev__cctx->idle_sp == STACKLEVEL) 1269 prev__cctx->idle_sp == STACKLEVEL
1270 && !(prev__cctx->flags & CC_TRACE)
1271 && !force_cctx
1272 ))
818 { 1273 {
819 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1274 /* 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)); 1275 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
821 1276
822 prev->cctx = 0; 1277 prev->cctx = 0;
823 1278
1279 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1280 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1281 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1282 if (!next->cctx)
1283 next->cctx = cctx_get (aTHX);
1284
824 cctx_put (prev__cctx); 1285 cctx_put (prev__cctx);
825 prev__cctx->inuse = 0;
826 } 1286 }
827 1287
1288 ++next->usecount;
1289
828 if (!next->cctx) 1290 if (expect_true (!next->cctx))
829 {
830 next->cctx = cctx_get (aTHX); 1291 next->cctx = cctx_get (aTHX);
831 assert (!next->cctx->inuse);
832 next->cctx->inuse = 1;
833 }
834 1292
1293 has_throw = !!next->throw;
1294
835 if (prev__cctx != next->cctx) 1295 if (expect_false (prev__cctx != next->cctx))
836 { 1296 {
837 prev__cctx->top_env = PL_top_env; 1297 prev__cctx->top_env = PL_top_env;
838 PL_top_env = next->cctx->top_env; 1298 PL_top_env = next->cctx->top_env;
839 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1299 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
840 } 1300 }
841 1301
842 free_coro_mortal (aTHX); 1302 free_coro_mortal (aTHX);
843 UNLOCK; 1303 UNLOCK;
1304
1305 if (expect_false (has_throw))
1306 {
1307 struct coro *coro = SvSTATE (coro_current);
1308
1309 if (coro->throw)
1310 {
1311 SV *exception = coro->throw;
1312 coro->throw = 0;
1313 sv_setsv (ERRSV, exception);
1314 croak (0);
1315 }
1316 }
844 } 1317 }
845} 1318}
846 1319
847struct transfer_args 1320struct transfer_args
848{ 1321{
849 struct coro *prev, *next; 1322 struct coro *prev, *next;
850}; 1323};
851 1324
1325#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
852#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1326#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
853 1327
854/** high level stuff ********************************************************/ 1328/** high level stuff ********************************************************/
855 1329
856static int 1330static int
857coro_state_destroy (pTHX_ struct coro *coro) 1331coro_state_destroy (pTHX_ struct coro *coro)
… …
874 1348
875 if (coro->mainstack && coro->mainstack != main_mainstack) 1349 if (coro->mainstack && coro->mainstack != main_mainstack)
876 { 1350 {
877 struct coro temp; 1351 struct coro temp;
878 1352
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) 1353 if (coro->flags & CF_RUNNING)
885 croak ("FATAL: tried to destroy currently running coroutine"); 1354 croak ("FATAL: tried to destroy currently running coroutine");
886 1355
887 save_perl (aTHX_ &temp); 1356 save_perl (aTHX_ &temp);
888 load_perl (aTHX_ coro); 1357 load_perl (aTHX_ coro);
889 1358
890 coro_destroy_stacks (aTHX); 1359 coro_destruct (aTHX_ coro);
891 1360
892 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1361 load_perl (aTHX_ &temp);
893 1362
894 coro->mainstack = 0; 1363 coro->slot = 0;
895 } 1364 }
896 1365
897 cctx_destroy (coro->cctx); 1366 cctx_destroy (coro->cctx);
898 SvREFCNT_dec (coro->args); 1367 SvREFCNT_dec (coro->args);
899 1368
1369 if (coro->next) coro->next->prev = coro->prev;
1370 if (coro->prev) coro->prev->next = coro->next;
1371 if (coro == coro_first) coro_first = coro->next;
1372
900 return 1; 1373 return 1;
901} 1374}
902 1375
903static int 1376static int
904coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1377coro_state_free (pTHX_ SV *sv, MAGIC *mg)
905{ 1378{
906 struct coro *coro = (struct coro *)mg->mg_ptr; 1379 struct coro *coro = (struct coro *)mg->mg_ptr;
907 mg->mg_ptr = 0; 1380 mg->mg_ptr = 0;
1381
1382 coro->hv = 0;
908 1383
909 if (--coro->refcnt < 0) 1384 if (--coro->refcnt < 0)
910 { 1385 {
911 coro_state_destroy (aTHX_ coro); 1386 coro_state_destroy (aTHX_ coro);
912 Safefree (coro); 1387 Safefree (coro);
… …
934#else 1409#else
935# define MGf_DUP 0 1410# define MGf_DUP 0
936#endif 1411#endif
937}; 1412};
938 1413
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 1414static void
963prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1415prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
964{ 1416{
965 ta->prev = SvSTATE (prev_sv); 1417 ta->prev = SvSTATE (prev_sv);
966 ta->next = SvSTATE (next_sv); 1418 ta->next = SvSTATE (next_sv);
1419 TRANSFER_CHECK (*ta);
967} 1420}
968 1421
969static void 1422static void
970api_transfer (SV *prev_sv, SV *next_sv) 1423api_transfer (SV *prev_sv, SV *next_sv)
971{ 1424{
972 dTHX; 1425 dTHX;
973 struct transfer_args ta; 1426 struct transfer_args ta;
974 1427
975 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1428 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
976 TRANSFER (ta); 1429 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} 1430}
991 1431
992/** Coro ********************************************************************/ 1432/** Coro ********************************************************************/
993 1433
994static void 1434static void
… …
996{ 1436{
997 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1437 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
998} 1438}
999 1439
1000static SV * 1440static SV *
1001coro_deq (pTHX_ int min_prio) 1441coro_deq (pTHX)
1002{ 1442{
1003 int prio = PRIO_MAX - PRIO_MIN; 1443 int prio;
1004 1444
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; ) 1445 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1010 if (AvFILLp (coro_ready [prio]) >= 0) 1446 if (AvFILLp (coro_ready [prio]) >= 0)
1011 return av_shift (coro_ready [prio]); 1447 return av_shift (coro_ready [prio]);
1012 1448
1013 return 0; 1449 return 0;
1014} 1450}
… …
1016static int 1452static int
1017api_ready (SV *coro_sv) 1453api_ready (SV *coro_sv)
1018{ 1454{
1019 dTHX; 1455 dTHX;
1020 struct coro *coro; 1456 struct coro *coro;
1457 SV *sv_hook;
1458 void (*xs_hook)(void);
1021 1459
1022 if (SvROK (coro_sv)) 1460 if (SvROK (coro_sv))
1023 coro_sv = SvRV (coro_sv); 1461 coro_sv = SvRV (coro_sv);
1024 1462
1025 coro = SvSTATE (coro_sv); 1463 coro = SvSTATE (coro_sv);
… …
1028 return 0; 1466 return 0;
1029 1467
1030 coro->flags |= CF_READY; 1468 coro->flags |= CF_READY;
1031 1469
1032 LOCK; 1470 LOCK;
1471
1472 sv_hook = coro_nready ? 0 : coro_readyhook;
1473 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1474
1033 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1475 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1034 ++coro_nready; 1476 ++coro_nready;
1477
1035 UNLOCK; 1478 UNLOCK;
1479
1480 if (sv_hook)
1481 {
1482 dSP;
1483
1484 ENTER;
1485 SAVETMPS;
1486
1487 PUSHMARK (SP);
1488 PUTBACK;
1489 call_sv (sv_hook, G_DISCARD);
1490 SPAGAIN;
1491
1492 FREETMPS;
1493 LEAVE;
1494 }
1495
1496 if (xs_hook)
1497 xs_hook ();
1036 1498
1037 return 1; 1499 return 1;
1038} 1500}
1039 1501
1040static int 1502static int
… …
1050 SV *prev_sv, *next_sv; 1512 SV *prev_sv, *next_sv;
1051 1513
1052 for (;;) 1514 for (;;)
1053 { 1515 {
1054 LOCK; 1516 LOCK;
1055 next_sv = coro_deq (aTHX_ PRIO_MIN); 1517 next_sv = coro_deq (aTHX);
1056 1518
1057 /* nothing to schedule: call the idle handler */ 1519 /* nothing to schedule: call the idle handler */
1058 if (!next_sv) 1520 if (expect_false (!next_sv))
1059 { 1521 {
1060 dSP; 1522 dSP;
1061 UNLOCK; 1523 UNLOCK;
1062 1524
1063 ENTER; 1525 ENTER;
1064 SAVETMPS; 1526 SAVETMPS;
1065 1527
1066 PUSHMARK (SP); 1528 PUSHMARK (SP);
1067 PUTBACK; 1529 PUTBACK;
1068 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1530 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1531 SPAGAIN;
1069 1532
1070 FREETMPS; 1533 FREETMPS;
1071 LEAVE; 1534 LEAVE;
1072 continue; 1535 continue;
1073 } 1536 }
1074 1537
1075 ta->next = SvSTATE (next_sv); 1538 ta->next = SvSTATE (next_sv);
1076 1539
1077 /* cannot transfer to destroyed coros, skip and look for next */ 1540 /* cannot transfer to destroyed coros, skip and look for next */
1078 if (ta->next->flags & CF_DESTROYED) 1541 if (expect_false (ta->next->flags & CF_DESTROYED))
1079 { 1542 {
1080 UNLOCK; 1543 UNLOCK;
1081 SvREFCNT_dec (next_sv); 1544 SvREFCNT_dec (next_sv);
1082 /* coro_nready is already taken care of by destroy */ 1545 /* coro_nready is already taken care of by destroy */
1083 continue; 1546 continue;
… …
1088 break; 1551 break;
1089 } 1552 }
1090 1553
1091 /* free this only after the transfer */ 1554 /* free this only after the transfer */
1092 prev_sv = SvRV (coro_current); 1555 prev_sv = SvRV (coro_current);
1093 SvRV_set (coro_current, next_sv);
1094 ta->prev = SvSTATE (prev_sv); 1556 ta->prev = SvSTATE (prev_sv);
1095 1557 TRANSFER_CHECK (*ta);
1096 assert (ta->next->flags & CF_READY); 1558 assert (ta->next->flags & CF_READY);
1097 ta->next->flags &= ~CF_READY; 1559 ta->next->flags &= ~CF_READY;
1560 SvRV_set (coro_current, next_sv);
1098 1561
1099 LOCK; 1562 LOCK;
1100 free_coro_mortal (aTHX); 1563 free_coro_mortal (aTHX);
1101 coro_mortal = prev_sv; 1564 coro_mortal = prev_sv;
1102 UNLOCK; 1565 UNLOCK;
… …
1128{ 1591{
1129 dTHX; 1592 dTHX;
1130 struct transfer_args ta; 1593 struct transfer_args ta;
1131 1594
1132 prepare_schedule (aTHX_ &ta); 1595 prepare_schedule (aTHX_ &ta);
1133 TRANSFER (ta); 1596 TRANSFER (ta, 1);
1134} 1597}
1135 1598
1136static int 1599static int
1137api_cede (void) 1600api_cede (void)
1138{ 1601{
1139 dTHX; 1602 dTHX;
1140 struct transfer_args ta; 1603 struct transfer_args ta;
1141 1604
1142 prepare_cede (aTHX_ &ta); 1605 prepare_cede (aTHX_ &ta);
1143 1606
1144 if (ta.prev != ta.next) 1607 if (expect_true (ta.prev != ta.next))
1145 { 1608 {
1146 TRANSFER (ta); 1609 TRANSFER (ta, 1);
1147 return 1; 1610 return 1;
1148 } 1611 }
1149 else 1612 else
1150 return 0; 1613 return 0;
1151} 1614}
… …
1156 dTHX; 1619 dTHX;
1157 struct transfer_args ta; 1620 struct transfer_args ta;
1158 1621
1159 if (prepare_cede_notself (aTHX_ &ta)) 1622 if (prepare_cede_notself (aTHX_ &ta))
1160 { 1623 {
1161 TRANSFER (ta); 1624 TRANSFER (ta, 1);
1162 return 1; 1625 return 1;
1163 } 1626 }
1164 else 1627 else
1165 return 0; 1628 return 0;
1166} 1629}
1167 1630
1631static void
1632api_trace (SV *coro_sv, int flags)
1633{
1634 dTHX;
1635 struct coro *coro = SvSTATE (coro_sv);
1636
1637 if (flags & CC_TRACE)
1638 {
1639 if (!coro->cctx)
1640 coro->cctx = cctx_new ();
1641 else if (!(coro->cctx->flags & CC_TRACE))
1642 croak ("cannot enable tracing on coroutine with custom stack");
1643
1644 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1645 }
1646 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1647 {
1648 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1649
1650 if (coro->flags & CF_RUNNING)
1651 PL_runops = RUNOPS_DEFAULT;
1652 else
1653 coro->slot->runops = RUNOPS_DEFAULT;
1654 }
1655}
1656
1657static int
1658coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1659{
1660 AV *padlist;
1661 AV *av = (AV *)mg->mg_obj;
1662
1663 abort ();
1664
1665 return 0;
1666}
1667
1668static MGVTBL coro_gensub_vtbl = {
1669 0, 0, 0, 0,
1670 coro_gensub_free
1671};
1672
1673/*****************************************************************************/
1674/* PerlIO::cede */
1675
1676typedef struct
1677{
1678 PerlIOBuf base;
1679 NV next, every;
1680} PerlIOCede;
1681
1682static IV
1683PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1684{
1685 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1686
1687 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1688 self->next = nvtime () + self->every;
1689
1690 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1691}
1692
1693static SV *
1694PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1695{
1696 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1697
1698 return newSVnv (self->every);
1699}
1700
1701static IV
1702PerlIOCede_flush (pTHX_ PerlIO *f)
1703{
1704 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1705 double now = nvtime ();
1706
1707 if (now >= self->next)
1708 {
1709 api_cede ();
1710 self->next = now + self->every;
1711 }
1712
1713 return PerlIOBuf_flush (aTHX_ f);
1714}
1715
1716static PerlIO_funcs PerlIO_cede =
1717{
1718 sizeof(PerlIO_funcs),
1719 "cede",
1720 sizeof(PerlIOCede),
1721 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1722 PerlIOCede_pushed,
1723 PerlIOBuf_popped,
1724 PerlIOBuf_open,
1725 PerlIOBase_binmode,
1726 PerlIOCede_getarg,
1727 PerlIOBase_fileno,
1728 PerlIOBuf_dup,
1729 PerlIOBuf_read,
1730 PerlIOBuf_unread,
1731 PerlIOBuf_write,
1732 PerlIOBuf_seek,
1733 PerlIOBuf_tell,
1734 PerlIOBuf_close,
1735 PerlIOCede_flush,
1736 PerlIOBuf_fill,
1737 PerlIOBase_eof,
1738 PerlIOBase_error,
1739 PerlIOBase_clearerr,
1740 PerlIOBase_setlinebuf,
1741 PerlIOBuf_get_base,
1742 PerlIOBuf_bufsiz,
1743 PerlIOBuf_get_ptr,
1744 PerlIOBuf_get_cnt,
1745 PerlIOBuf_set_ptrcnt,
1746};
1747
1748
1168MODULE = Coro::State PACKAGE = Coro::State 1749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1169 1750
1170PROTOTYPES: DISABLE 1751PROTOTYPES: DISABLE
1171 1752
1172BOOT: 1753BOOT:
1173{ 1754{
1174#ifdef USE_ITHREADS 1755#ifdef USE_ITHREADS
1175 MUTEX_INIT (&coro_mutex); 1756 MUTEX_INIT (&coro_lock);
1176#endif 1757#endif
1177 BOOT_PAGESIZE; 1758 BOOT_PAGESIZE;
1178 1759
1760 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1761 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1762
1763 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1764 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1765 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1766
1767 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1768 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1769 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1770
1179 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1771 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1180 1772
1181 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1773 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1182 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1774 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)); 1775 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1187 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1776 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1188 1777
1189 main_mainstack = PL_mainstack; 1778 main_mainstack = PL_mainstack;
1190 main_top_env = PL_top_env; 1779 main_top_env = PL_top_env;
1191 1780
1192 while (main_top_env->je_prev) 1781 while (main_top_env->je_prev)
1193 main_top_env = main_top_env->je_prev; 1782 main_top_env = main_top_env->je_prev;
1194 1783
1195 coroapi.ver = CORO_API_VERSION; 1784 coroapi.ver = CORO_API_VERSION;
1785 coroapi.rev = CORO_API_REVISION;
1196 coroapi.transfer = api_transfer; 1786 coroapi.transfer = api_transfer;
1787
1788 {
1789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1790
1791 if (!svp) croak ("Time::HiRes is required");
1792 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1793
1794 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1795 }
1197 1796
1198 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1199} 1798}
1200 1799
1201SV * 1800SV *
1202new (char *klass, ...) 1801new (char *klass, ...)
1203 CODE: 1802 CODE:
1204{ 1803{
1205 struct coro *coro; 1804 struct coro *coro;
1805 MAGIC *mg;
1206 HV *hv; 1806 HV *hv;
1207 int i; 1807 int i;
1208 1808
1209 Newz (0, coro, 1, struct coro); 1809 Newz (0, coro, 1, struct coro);
1210 coro->args = newAV (); 1810 coro->args = newAV ();
1211 coro->save = CORO_SAVE_DEF;
1212 coro->flags = CF_NEW; 1811 coro->flags = CF_NEW;
1213 1812
1813 if (coro_first) coro_first->prev = coro;
1814 coro->next = coro_first;
1815 coro_first = coro;
1816
1214 hv = newHV (); 1817 coro->hv = hv = newHV ();
1215 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1818 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1819 mg->mg_flags |= MGf_DUP;
1216 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1820 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1217 1821
1822 av_extend (coro->args, items - 1);
1218 for (i = 1; i < items; i++) 1823 for (i = 1; i < items; i++)
1219 av_push (coro->args, newSVsv (ST (i))); 1824 av_push (coro->args, newSVsv (ST (i)));
1220} 1825}
1221 OUTPUT: 1826 OUTPUT:
1222 RETVAL 1827 RETVAL
1223 1828
1224int 1829# these not obviously related functions are all rolled into the same xs
1225save (SV *coro, int new_save = -1) 1830# function to increase chances that they all will call transfer with the same
1226 CODE: 1831# 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 1832void
1243_set_stacklevel (...) 1833_set_stacklevel (...)
1244 ALIAS: 1834 ALIAS:
1245 Coro::State::transfer = 1 1835 Coro::State::transfer = 1
1246 Coro::schedule = 2 1836 Coro::schedule = 2
… …
1248 Coro::cede_notself = 4 1838 Coro::cede_notself = 4
1249 CODE: 1839 CODE:
1250{ 1840{
1251 struct transfer_args ta; 1841 struct transfer_args ta;
1252 1842
1843 PUTBACK;
1253 switch (ix) 1844 switch (ix)
1254 { 1845 {
1255 case 0: 1846 case 0:
1256 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1847 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1257 ta.next = 0; 1848 ta.next = 0;
1258 break; 1849 break;
1259 1850
1260 case 1: 1851 case 1:
1261 if (items != 2) 1852 if (items != 2)
1262 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1853 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1263 1854
1264 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1855 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1265 break; 1856 break;
1266 1857
1267 case 2: 1858 case 2:
… …
1276 if (!prepare_cede_notself (aTHX_ &ta)) 1867 if (!prepare_cede_notself (aTHX_ &ta))
1277 XSRETURN_EMPTY; 1868 XSRETURN_EMPTY;
1278 1869
1279 break; 1870 break;
1280 } 1871 }
1872 SPAGAIN;
1281 1873
1282 BARRIER; 1874 BARRIER;
1875 PUTBACK;
1283 TRANSFER (ta); 1876 TRANSFER (ta, 0);
1284 1877 SPAGAIN; /* might be the sp of a different coroutine now */
1285 if (GIMME_V != G_VOID && ta.next != ta.prev) 1878 /* be extra careful not to ever do anything after TRANSFER */
1286 XSRETURN_YES;
1287} 1879}
1288 1880
1289bool 1881bool
1290_destroy (SV *coro_sv) 1882_destroy (SV *coro_sv)
1291 CODE: 1883 CODE:
1292 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 1884 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1293 OUTPUT: 1885 OUTPUT:
1294 RETVAL 1886 RETVAL
1295 1887
1296void 1888void
1297_exit (code) 1889_exit (int code)
1298 int code
1299 PROTOTYPE: $ 1890 PROTOTYPE: $
1300 CODE: 1891 CODE:
1301 _exit (code); 1892 _exit (code);
1302 1893
1303int 1894int
1304cctx_stacksize (int new_stacksize = 0) 1895cctx_stacksize (int new_stacksize = 0)
1305 CODE: 1896 CODE:
1306 RETVAL = coro_stacksize; 1897 RETVAL = cctx_stacksize;
1307 if (new_stacksize) 1898 if (new_stacksize)
1899 {
1308 coro_stacksize = new_stacksize; 1900 cctx_stacksize = new_stacksize;
1901 ++cctx_gen;
1902 }
1903 OUTPUT:
1904 RETVAL
1905
1906int
1907cctx_max_idle (int max_idle = 0)
1908 CODE:
1909 RETVAL = cctx_max_idle;
1910 if (max_idle > 1)
1911 cctx_max_idle = max_idle;
1309 OUTPUT: 1912 OUTPUT:
1310 RETVAL 1913 RETVAL
1311 1914
1312int 1915int
1313cctx_count () 1916cctx_count ()
… …
1321 CODE: 1924 CODE:
1322 RETVAL = cctx_idle; 1925 RETVAL = cctx_idle;
1323 OUTPUT: 1926 OUTPUT:
1324 RETVAL 1927 RETVAL
1325 1928
1929void
1930list ()
1931 PPCODE:
1932{
1933 struct coro *coro;
1934 for (coro = coro_first; coro; coro = coro->next)
1935 if (coro->hv)
1936 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1937}
1938
1939void
1940call (Coro::State coro, SV *coderef)
1941 ALIAS:
1942 eval = 1
1943 CODE:
1944{
1945 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1946 {
1947 struct coro temp;
1948
1949 if (!(coro->flags & CF_RUNNING))
1950 {
1951 PUTBACK;
1952 save_perl (aTHX_ &temp);
1953 load_perl (aTHX_ coro);
1954 }
1955
1956 {
1957 dSP;
1958 ENTER;
1959 SAVETMPS;
1960 PUTBACK;
1961 PUSHSTACK;
1962 PUSHMARK (SP);
1963
1964 if (ix)
1965 eval_sv (coderef, 0);
1966 else
1967 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1968
1969 POPSTACK;
1970 SPAGAIN;
1971 FREETMPS;
1972 LEAVE;
1973 PUTBACK;
1974 }
1975
1976 if (!(coro->flags & CF_RUNNING))
1977 {
1978 save_perl (aTHX_ coro);
1979 load_perl (aTHX_ &temp);
1980 SPAGAIN;
1981 }
1982 }
1983}
1984
1985SV *
1986is_ready (Coro::State coro)
1987 PROTOTYPE: $
1988 ALIAS:
1989 is_ready = CF_READY
1990 is_running = CF_RUNNING
1991 is_new = CF_NEW
1992 is_destroyed = CF_DESTROYED
1993 CODE:
1994 RETVAL = boolSV (coro->flags & ix);
1995 OUTPUT:
1996 RETVAL
1997
1998void
1999api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2000
2001SV *
2002has_cctx (Coro::State coro)
2003 PROTOTYPE: $
2004 CODE:
2005 RETVAL = boolSV (!!coro->cctx);
2006 OUTPUT:
2007 RETVAL
2008
2009int
2010is_traced (Coro::State coro)
2011 PROTOTYPE: $
2012 CODE:
2013 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2014 OUTPUT:
2015 RETVAL
2016
2017IV
2018rss (Coro::State coro)
2019 PROTOTYPE: $
2020 ALIAS:
2021 usecount = 1
2022 CODE:
2023 switch (ix)
2024 {
2025 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2026 case 1: RETVAL = coro->usecount; break;
2027 }
2028 OUTPUT:
2029 RETVAL
2030
2031void
2032force_cctx ()
2033 CODE:
2034 struct coro *coro = SvSTATE (coro_current);
2035 coro->cctx->idle_sp = 0;
2036
2037void
2038swap_defsv (Coro::State self)
2039 PROTOTYPE: $
2040 ALIAS:
2041 swap_defav = 1
2042 CODE:
2043 if (!self->slot)
2044 croak ("cannot swap state with coroutine that has no saved state");
2045 else
2046 {
2047 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2048 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2049
2050 SV *tmp = *src; *src = *dst; *dst = tmp;
2051 }
2052
1326MODULE = Coro::State PACKAGE = Coro 2053MODULE = Coro::State PACKAGE = Coro
1327 2054
1328BOOT: 2055BOOT:
1329{ 2056{
1330 int i; 2057 int i;
1331 2058
2059 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2060 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2061 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2062
2063 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2064 SvREADONLY_on (coro_current);
2065
1332 coro_stash = gv_stashpv ("Coro", TRUE); 2066 coro_stash = gv_stashpv ("Coro", TRUE);
1333 2067
1334 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2068 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1335 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2069 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1336 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2070 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1337 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2071 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1338 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2072 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1339 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2073 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1340 2074
1341 coro_current = get_sv ("Coro::current", FALSE);
1342 SvREADONLY_on (coro_current);
1343
1344 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2075 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1345 coro_ready[i] = newAV (); 2076 coro_ready[i] = newAV ();
1346 2077
1347 { 2078 {
1348 SV *sv = perl_get_sv("Coro::API", 1); 2079 SV *sv = perl_get_sv ("Coro::API", TRUE);
2080 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1349 2081
1350 coroapi.schedule = api_schedule; 2082 coroapi.schedule = api_schedule;
1351 coroapi.save = api_save;
1352 coroapi.cede = api_cede; 2083 coroapi.cede = api_cede;
1353 coroapi.cede_notself = api_cede_notself; 2084 coroapi.cede_notself = api_cede_notself;
1354 coroapi.ready = api_ready; 2085 coroapi.ready = api_ready;
1355 coroapi.is_ready = api_is_ready; 2086 coroapi.is_ready = api_is_ready;
1356 coroapi.nready = &coro_nready; 2087 coroapi.nready = &coro_nready;
… …
1365void 2096void
1366_set_current (SV *current) 2097_set_current (SV *current)
1367 PROTOTYPE: $ 2098 PROTOTYPE: $
1368 CODE: 2099 CODE:
1369 SvREFCNT_dec (SvRV (coro_current)); 2100 SvREFCNT_dec (SvRV (coro_current));
1370 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2101 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2102
2103void
2104_set_readyhook (SV *hook)
2105 PROTOTYPE: $
2106 CODE:
2107 LOCK;
2108 SvREFCNT_dec (coro_readyhook);
2109 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2110 UNLOCK;
1371 2111
1372int 2112int
1373prio (Coro::State coro, int newprio = 0) 2113prio (Coro::State coro, int newprio = 0)
1374 ALIAS: 2114 ALIAS:
1375 nice = 1 2115 nice = 1
… …
1397 CODE: 2137 CODE:
1398 RETVAL = boolSV (api_ready (self)); 2138 RETVAL = boolSV (api_ready (self));
1399 OUTPUT: 2139 OUTPUT:
1400 RETVAL 2140 RETVAL
1401 2141
1402SV *
1403is_ready (SV *self)
1404 PROTOTYPE: $
1405 CODE:
1406 RETVAL = boolSV (api_is_ready (self));
1407 OUTPUT:
1408 RETVAL
1409
1410int 2142int
1411nready (...) 2143nready (...)
1412 PROTOTYPE: 2144 PROTOTYPE:
1413 CODE: 2145 CODE:
1414 RETVAL = coro_nready; 2146 RETVAL = coro_nready;
1415 OUTPUT: 2147 OUTPUT:
1416 RETVAL 2148 RETVAL
1417 2149
2150void
2151throw (Coro::State self, SV *throw = &PL_sv_undef)
2152 PROTOTYPE: $;$
2153 CODE:
2154 SvREFCNT_dec (self->throw);
2155 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2156
2157# for async_pool speedup
2158void
2159_pool_1 (SV *cb)
2160 CODE:
2161{
2162 struct coro *coro = SvSTATE (coro_current);
2163 HV *hv = (HV *)SvRV (coro_current);
2164 AV *defav = GvAV (PL_defgv);
2165 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2166 AV *invoke_av;
2167 int i, len;
2168
2169 if (!invoke)
2170 {
2171 SV *old = PL_diehook;
2172 PL_diehook = 0;
2173 SvREFCNT_dec (old);
2174 croak ("\3async_pool terminate\2\n");
2175 }
2176
2177 SvREFCNT_dec (coro->saved_deffh);
2178 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2179
2180 hv_store (hv, "desc", sizeof ("desc") - 1,
2181 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2182
2183 invoke_av = (AV *)SvRV (invoke);
2184 len = av_len (invoke_av);
2185
2186 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2187
2188 if (len > 0)
2189 {
2190 av_fill (defav, len - 1);
2191 for (i = 0; i < len; ++i)
2192 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2193 }
2194
2195 SvREFCNT_dec (invoke);
2196}
2197
2198void
2199_pool_2 (SV *cb)
2200 CODE:
2201{
2202 struct coro *coro = SvSTATE (coro_current);
2203
2204 sv_setsv (cb, &PL_sv_undef);
2205
2206 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2207 coro->saved_deffh = 0;
2208
2209 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2210 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2211 {
2212 SV *old = PL_diehook;
2213 PL_diehook = 0;
2214 SvREFCNT_dec (old);
2215 croak ("\3async_pool terminate\2\n");
2216 }
2217
2218 av_clear (GvAV (PL_defgv));
2219 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2220 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2221
2222 coro->prio = 0;
2223
2224 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2225 api_trace (coro_current, 0);
2226
2227 av_push (av_async_pool, newSVsv (coro_current));
2228}
2229
2230#if 0
2231
2232void
2233_generator_call (...)
2234 PROTOTYPE: @
2235 PPCODE:
2236 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2237 xxxx
2238 abort ();
2239
2240SV *
2241gensub (SV *sub, ...)
2242 PROTOTYPE: &;@
2243 CODE:
2244{
2245 struct coro *coro;
2246 MAGIC *mg;
2247 CV *xcv;
2248 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2249 int i;
2250
2251 CvGV (ncv) = CvGV (cv);
2252 CvFILE (ncv) = CvFILE (cv);
2253
2254 Newz (0, coro, 1, struct coro);
2255 coro->args = newAV ();
2256 coro->flags = CF_NEW;
2257
2258 av_extend (coro->args, items - 1);
2259 for (i = 1; i < items; i++)
2260 av_push (coro->args, newSVsv (ST (i)));
2261
2262 CvISXSUB_on (ncv);
2263 CvXSUBANY (ncv).any_ptr = (void *)coro;
2264
2265 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2266
2267 CvXSUB (ncv) = CvXSUB (xcv);
2268 CvANON_on (ncv);
2269
2270 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2271 RETVAL = newRV_noinc ((SV *)ncv);
2272}
2273 OUTPUT:
2274 RETVAL
2275
2276#endif
2277
2278
1418MODULE = Coro::State PACKAGE = Coro::AIO 2279MODULE = Coro::State PACKAGE = Coro::AIO
1419 2280
1420SV * 2281void
1421_get_state () 2282_get_state (SV *self)
1422 CODE: 2283 PPCODE:
1423{ 2284{
1424 struct io_state *data; 2285 AV *defav = GvAV (PL_defgv);
1425 2286 AV *av = newAV ();
2287 int i;
1426 RETVAL = newSV (sizeof (struct io_state)); 2288 SV *data_sv = newSV (sizeof (struct io_state));
1427 data = (struct io_state *)SvPVX (RETVAL); 2289 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1428 SvCUR_set (RETVAL, sizeof (struct io_state)); 2290 SvCUR_set (data_sv, sizeof (struct io_state));
1429 SvPOK_only (RETVAL); 2291 SvPOK_only (data_sv);
1430 2292
1431 data->errorno = errno; 2293 data->errorno = errno;
1432 data->laststype = PL_laststype; 2294 data->laststype = PL_laststype;
1433 data->laststatval = PL_laststatval; 2295 data->laststatval = PL_laststatval;
1434 data->statcache = PL_statcache; 2296 data->statcache = PL_statcache;
2297
2298 av_extend (av, AvFILLp (defav) + 1 + 1);
2299
2300 for (i = 0; i <= AvFILLp (defav); ++i)
2301 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2302
2303 av_push (av, data_sv);
2304
2305 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2306
2307 api_ready (self);
1435} 2308}
1436 OUTPUT:
1437 RETVAL
1438 2309
1439void 2310void
1440_set_state (char *data_) 2311_set_state (SV *state)
1441 PROTOTYPE: $ 2312 PROTOTYPE: $
1442 CODE: 2313 PPCODE:
1443{ 2314{
1444 struct io_state *data = (void *)data_; 2315 AV *av = (AV *)SvRV (state);
2316 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2317 int i;
1445 2318
1446 errno = data->errorno; 2319 errno = data->errorno;
1447 PL_laststype = data->laststype; 2320 PL_laststype = data->laststype;
1448 PL_laststatval = data->laststatval; 2321 PL_laststatval = data->laststatval;
1449 PL_statcache = data->statcache; 2322 PL_statcache = data->statcache;
1450}
1451 2323
2324 EXTEND (SP, AvFILLp (av));
2325 for (i = 0; i < AvFILLp (av); ++i)
2326 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2327}
2328
2329
2330MODULE = Coro::State PACKAGE = Coro::AnyEvent
2331
2332BOOT:
2333 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2334
2335SV *
2336_schedule (...)
2337 PROTOTYPE: @
2338 CODE:
2339{
2340 static int incede;
2341
2342 api_cede_notself ();
2343
2344 ++incede;
2345 while (coro_nready >= incede && api_cede ())
2346 ;
2347
2348 sv_setsv (sv_activity, &PL_sv_undef);
2349 if (coro_nready >= incede)
2350 {
2351 PUSHMARK (SP);
2352 PUTBACK;
2353 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2354 SPAGAIN;
2355 }
2356
2357 --incede;
2358}
2359
2360
2361MODULE = Coro::State PACKAGE = PerlIO::cede
2362
2363BOOT:
2364 PerlIO_define_layer (aTHX_ &PerlIO_cede);

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines