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Comparing Coro/Coro/State.xs (file contents):
Revision 1.151 by root, Wed Sep 19 21:39:15 2007 UTC vs.
Revision 1.260 by root, Mon Nov 10 04:37:23 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 struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192
193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
198
199/* async_pool helper stuff */
200static SV *sv_pool_rss;
201static SV *sv_pool_size;
202static AV *av_async_pool;
203
204/* Coro::AnyEvent */
205static SV *sv_activity;
137 206
138static struct coro_cctx *cctx_first; 207static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 208static int cctx_count, cctx_idle;
209
210enum {
211 CC_MAPPED = 0x01,
212 CC_NOREUSE = 0x02, /* throw this away after tracing */
213 CC_TRACE = 0x04,
214 CC_TRACE_SUB = 0x08, /* trace sub calls */
215 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217};
140 218
141/* this is a structure representing a c-level coroutine */ 219/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 220typedef struct coro_cctx {
143 struct coro_cctx *next; 221 struct coro_cctx *next;
144 222
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 228 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 */ 229 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 230 JMPENV *top_env;
153 coro_context cctx; 231 coro_context cctx;
154 232
233 U32 gen;
155#if CORO_USE_VALGRIND 234#if CORO_USE_VALGRIND
156 int valgrind_id; 235 int valgrind_id;
157#endif 236#endif
158 char inuse, mapped; 237 unsigned char flags;
159} coro_cctx; 238} coro_cctx;
160 239
161enum { 240enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 241 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 242 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 243 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 245};
167 246
247/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct {
249 SV *defsv;
250 AV *defav;
251 SV *errsv;
252 SV *irsgv;
253#define VAR(name,type) type name;
254# include "state.h"
255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
168/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
169struct coro { 261struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 263 coro_cctx *cctx;
172 264
265 /* process data */
266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */
268
173 /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 270 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
178 273
179 /* optionally saved, might be zero */ 274 /* statistics */
180 AV *defav; /* @_ */ 275 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
190 276
191 /* coro process data */ 277 /* coro process data */
192 int prio; 278 int prio;
279 SV *throw; /* exception to be thrown */
280
281 /* async_pool */
282 SV *saved_deffh;
193 283
194 /* linked list */ 284 /* linked list */
195 struct coro *next, *prev; 285 struct coro *next, *prev;
196 HV *hv; /* the perl hash associated with this coro, if any */
197}; 286};
198 287
199typedef struct coro *Coro__State; 288typedef struct coro *Coro__State;
200typedef struct coro *Coro__State_or_hashref; 289typedef struct coro *Coro__State_or_hashref;
201 290
… …
208#define PRIO_IDLE -3 297#define PRIO_IDLE -3
209#define PRIO_MIN -4 298#define PRIO_MIN -4
210 299
211/* for Coro.pm */ 300/* for Coro.pm */
212static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
213static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
214static int coro_nready; 304static int coro_nready;
215static struct coro *first; 305static struct coro *coro_first;
216 306
217/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
218 338
219static AV * 339static AV *
220coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
221{ 341{
222 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
223 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
224 344
225 newpadlist = newAV (); 345 newpadlist = newAV ();
226 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
227#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
228 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229#else 349#else
230 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231#endif 351#endif
232 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
233 --AvFILLp (padlist); 353 --AvFILLp (padlist);
234 354
235 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
236 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
237 357
238 return newpadlist; 358 return newpadlist;
239} 359}
240 360
… …
270 390
271 /* casting is fun. */ 391 /* casting is fun. */
272 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
273 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
274 394
275 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
276 396
277 return 0; 397 return 0;
278} 398}
279 399
280#define PERL_MAGIC_coro PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
281 402
282static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
283 407
284#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
285 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
286 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
287 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
288 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
289 : 0 413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418static struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
290 443
291/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
292static void 445static void
293get_padlist (pTHX_ CV *cv) 446get_padlist (pTHX_ CV *cv)
294{ 447{
295 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
296 AV *av; 449 AV *av;
297 450
298 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300 else 453 else
301 { 454 {
302#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
303 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
304 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
305 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
306 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
307 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
308#else 462#else
… …
312} 466}
313 467
314static void 468static void
315put_padlist (pTHX_ CV *cv) 469put_padlist (pTHX_ CV *cv)
316{ 470{
317 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
318 AV *av; 472 AV *av;
319 473
320 if (!mg) 474 if (expect_false (!mg))
321 { 475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324 mg->mg_virtual = &vtbl_coro;
325 mg->mg_obj = (SV *)newAV ();
326 }
327 476
328 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
329 478
330 if (AvFILLp (av) >= AvMAX (av)) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
331 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
332 481
333 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334} 483}
335 484
336/** load & save, init *******************************************************/ 485/** load & save, init *******************************************************/
337
338#define SB do {
339#define SE } while (0)
340
341#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342 486
343static void 487static void
344load_perl (pTHX_ Coro__State c) 488load_perl (pTHX_ Coro__State c)
345{ 489{
490 perl_slots *slot = c->slot;
491 c->slot = 0;
492
493 PL_mainstack = c->mainstack;
494
495 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv;
499
346#define VAR(name,type) PL_ ## name = c->name; 500 #define VAR(name,type) PL_ ## name = slot->name;
347# include "state.h" 501 # include "state.h"
348#undef VAR 502 #undef VAR
349
350 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355 if (c->irssv)
356 {
357 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358 {
359 SvREFCNT_dec (c->irssv);
360 c->irssv = 0;
361 }
362 else
363 {
364 REPLACE_SV (PL_rs, c->irssv);
365 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366 sv_setsv (c->irssv_sv, PL_rs);
367 }
368 }
369 503
370 { 504 {
371 dSP; 505 dSP;
506
372 CV *cv; 507 CV *cv;
373 508
374 /* now do the ugly restore mess */ 509 /* now do the ugly restore mess */
375 while ((cv = (CV *)POPs)) 510 while (expect_true (cv = (CV *)POPs))
376 { 511 {
377 put_padlist (aTHX_ cv); /* mark this padlist as available */ 512 put_padlist (aTHX_ cv); /* mark this padlist as available */
378 CvDEPTH (cv) = PTR2IV (POPs); 513 CvDEPTH (cv) = PTR2IV (POPs);
379 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
380 } 515 }
… …
395 /* 530 /*
396 * the worst thing you can imagine happens first - we have to save 531 * the worst thing you can imagine happens first - we have to save
397 * (and reinitialize) all cv's in the whole callchain :( 532 * (and reinitialize) all cv's in the whole callchain :(
398 */ 533 */
399 534
400 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 535 XPUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 536 /* this loop was inspired by pp_caller */
403 for (;;) 537 for (;;)
404 { 538 {
405 while (cxix >= 0) 539 while (expect_true (cxix >= 0))
406 { 540 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 541 PERL_CONTEXT *cx = &ccstk[cxix--];
408 542
409 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410 { 544 {
411 CV *cv = cx->blk_sub.cv; 545 CV *cv = cx->blk_sub.cv;
412 546
413 if (CvDEPTH (cv)) 547 if (expect_true (CvDEPTH (cv)))
414 { 548 {
415 EXTEND (SP, 3); 549 EXTEND (SP, 3);
416 PUSHs ((SV *)CvPADLIST (cv)); 550 PUSHs ((SV *)CvPADLIST (cv));
417 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 551 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
418 PUSHs ((SV *)cv); 552 PUSHs ((SV *)cv);
419 553
420 CvDEPTH (cv) = 0; 554 CvDEPTH (cv) = 0;
421 get_padlist (aTHX_ cv); 555 get_padlist (aTHX_ cv);
422 } 556 }
423 } 557 }
424 } 558 }
425 559
426 if (top_si->si_type == PERLSI_MAIN) 560 if (expect_true (top_si->si_type == PERLSI_MAIN))
427 break; 561 break;
428 562
429 top_si = top_si->si_prev; 563 top_si = top_si->si_prev;
430 ccstk = top_si->si_cxstack; 564 ccstk = top_si->si_cxstack;
431 cxix = top_si->si_cxix; 565 cxix = top_si->si_cxix;
432 } 566 }
433 567
434 PUTBACK; 568 PUTBACK;
435 } 569 }
436 570
437 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 571 /* allocate some space on the context stack for our purposes */
438 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 572 /* we manually unroll here, as usually 2 slots is enough */
439 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 573 if (SLOT_COUNT >= 1) CXINC;
440 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 574 if (SLOT_COUNT >= 2) CXINC;
441 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 575 if (SLOT_COUNT >= 3) CXINC;
576 {
577 int i;
578 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC;
580 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */
442 582
583 c->mainstack = PL_mainstack;
584
585 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587
588 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV;
590 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv);
592
443#define VAR(name,type)c->name = PL_ ## name; 593 #define VAR(name,type) slot->name = PL_ ## name;
444# include "state.h" 594 # include "state.h"
445#undef VAR 595 #undef VAR
596 }
446} 597}
447 598
448/* 599/*
449 * allocate various perl stacks. This is an exact copy 600 * allocate various perl stacks. This is an exact copy
450 * of perl.c:init_stacks, except that it uses less memory 601 * of perl.c:init_stacks, except that it uses less memory
… …
455# define coro_init_stacks init_stacks 606# define coro_init_stacks init_stacks
456#else 607#else
457static void 608static void
458coro_init_stacks (pTHX) 609coro_init_stacks (pTHX)
459{ 610{
460 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 611 PL_curstackinfo = new_stackinfo(32, 8);
461 PL_curstackinfo->si_type = PERLSI_MAIN; 612 PL_curstackinfo->si_type = PERLSI_MAIN;
462 PL_curstack = PL_curstackinfo->si_stack; 613 PL_curstack = PL_curstackinfo->si_stack;
463 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464 615
465 PL_stack_base = AvARRAY(PL_curstack); 616 PL_stack_base = AvARRAY(PL_curstack);
466 PL_stack_sp = PL_stack_base; 617 PL_stack_sp = PL_stack_base;
467 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 618 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468 619
469 New(50,PL_tmps_stack,128,SV*); 620 New(50,PL_tmps_stack,32,SV*);
470 PL_tmps_floor = -1; 621 PL_tmps_floor = -1;
471 PL_tmps_ix = -1; 622 PL_tmps_ix = -1;
472 PL_tmps_max = 128; 623 PL_tmps_max = 32;
473 624
474 New(54,PL_markstack,32,I32); 625 New(54,PL_markstack,16,I32);
475 PL_markstack_ptr = PL_markstack; 626 PL_markstack_ptr = PL_markstack;
476 PL_markstack_max = PL_markstack + 32; 627 PL_markstack_max = PL_markstack + 16;
477 628
478#ifdef SET_MARK_OFFSET 629#ifdef SET_MARK_OFFSET
479 SET_MARK_OFFSET; 630 SET_MARK_OFFSET;
480#endif 631#endif
481 632
482 New(54,PL_scopestack,32,I32); 633 New(54,PL_scopestack,8,I32);
483 PL_scopestack_ix = 0; 634 PL_scopestack_ix = 0;
484 PL_scopestack_max = 32; 635 PL_scopestack_max = 8;
485 636
486 New(54,PL_savestack,64,ANY); 637 New(54,PL_savestack,24,ANY);
487 PL_savestack_ix = 0; 638 PL_savestack_ix = 0;
488 PL_savestack_max = 64; 639 PL_savestack_max = 24;
489 640
490#if !PERL_VERSION_ATLEAST (5,9,0) 641#if !PERL_VERSION_ATLEAST (5,10,0)
491 New(54,PL_retstack,16,OP*); 642 New(54,PL_retstack,4,OP*);
492 PL_retstack_ix = 0; 643 PL_retstack_ix = 0;
493 PL_retstack_max = 16; 644 PL_retstack_max = 4;
494#endif 645#endif
495} 646}
496#endif 647#endif
497 648
498/* 649/*
499 * destroy the stacks, the callchain etc... 650 * destroy the stacks, the callchain etc...
500 */ 651 */
501static void 652static void
502coro_destroy_stacks (pTHX) 653coro_destruct_stacks (pTHX)
503{ 654{
504 if (!IN_DESTRUCT)
505 {
506 /* restore all saved variables and stuff */
507 LEAVE_SCOPE (0);
508 assert (PL_tmps_floor == -1);
509
510 /* free all temporaries */
511 FREETMPS;
512 assert (PL_tmps_ix == -1);
513
514 /* unwind all extra stacks */
515 POPSTACK_TO (PL_mainstack);
516
517 /* unwind main stack */
518 dounwind (-1);
519 }
520
521 while (PL_curstackinfo->si_next) 655 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 656 PL_curstackinfo = PL_curstackinfo->si_next;
523 657
524 while (PL_curstackinfo) 658 while (PL_curstackinfo)
525 { 659 {
… …
535 669
536 Safefree (PL_tmps_stack); 670 Safefree (PL_tmps_stack);
537 Safefree (PL_markstack); 671 Safefree (PL_markstack);
538 Safefree (PL_scopestack); 672 Safefree (PL_scopestack);
539 Safefree (PL_savestack); 673 Safefree (PL_savestack);
540#if !PERL_VERSION_ATLEAST (5,9,0) 674#if !PERL_VERSION_ATLEAST (5,10,0)
541 Safefree (PL_retstack); 675 Safefree (PL_retstack);
542#endif 676#endif
543} 677}
544 678
679static size_t
680coro_rss (pTHX_ struct coro *coro)
681{
682 size_t rss = sizeof (*coro);
683
684 if (coro->mainstack)
685 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING)
690 {
691 slot = &tmp_slot;
692
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR
696 }
697 else
698 slot = coro->slot;
699
700 if (slot)
701 {
702 rss += sizeof (slot->curstackinfo);
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 }
714 }
715
716 return rss;
717}
718
545/** coroutine stack handling ************************************************/ 719/** coroutine stack handling ************************************************/
546 720
721static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
722static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
723static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
724
725/* apparently < 5.8.8 */
726#ifndef MgPV_nolen_const
727#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
728 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
729 (const char*)(mg)->mg_ptr)
730#endif
731
732/*
733 * This overrides the default magic get method of %SIG elements.
734 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
735 * and instead of tryign to save and restore the hash elements, we just provide
736 * readback here.
737 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
738 * not expecting this to actually change the hook. This is a potential problem
739 * when a schedule happens then, but we ignore this.
740 */
741static int
742coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
743{
744 const char *s = MgPV_nolen_const (mg);
745
746 if (*s == '_')
747 {
748 SV **svp = 0;
749
750 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
751 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
752
753 if (svp)
754 {
755 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
756 return 0;
757 }
758 }
759
760 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
761}
762
763static int
764coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
765{
766 const char *s = MgPV_nolen_const (mg);
767
768 if (*s == '_')
769 {
770 SV **svp = 0;
771
772 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
773 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
774
775 if (svp)
776 {
777 SV *old = *svp;
778 *svp = 0;
779 SvREFCNT_dec (old);
780 return 0;
781 }
782 }
783
784 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
785}
786
787static int
788coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
789{
790 const char *s = MgPV_nolen_const (mg);
791
792 if (*s == '_')
793 {
794 SV **svp = 0;
795
796 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798
799 if (svp)
800 {
801 SV *old = *svp;
802 *svp = newSVsv (sv);
803 SvREFCNT_dec (old);
804 return 0;
805 }
806 }
807
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809}
810
547static void 811static void
548setup_coro (pTHX_ struct coro *coro) 812coro_setup (pTHX_ struct coro *coro)
549{ 813{
550 /* 814 /*
551 * emulate part of the perl startup here. 815 * emulate part of the perl startup here.
552 */ 816 */
553 coro_init_stacks (aTHX); 817 coro_init_stacks (aTHX);
554 818
819 PL_runops = RUNOPS_DEFAULT;
555 PL_curcop = &PL_compiling; 820 PL_curcop = &PL_compiling;
556 PL_in_eval = EVAL_NULL; 821 PL_in_eval = EVAL_NULL;
557 PL_comppad = 0; 822 PL_comppad = 0;
558 PL_curpm = 0; 823 PL_curpm = 0;
824 PL_curpad = 0;
559 PL_localizing = 0; 825 PL_localizing = 0;
560 PL_dirty = 0; 826 PL_dirty = 0;
561 PL_restartop = 0; 827 PL_restartop = 0;
828#if PERL_VERSION_ATLEAST (5,10,0)
829 PL_parser = 0;
830#endif
831
832 /* recreate the die/warn hooks */
833 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
834 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
835
836 GvSV (PL_defgv) = newSV (0);
837 GvAV (PL_defgv) = coro->args; coro->args = 0;
838 GvSV (PL_errgv) = newSV (0);
839 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
840 PL_rs = newSVsv (GvSV (irsgv));
841 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
562 842
563 { 843 {
564 dSP; 844 dSP;
565 LOGOP myop; 845 UNOP myop;
566 846
567 SvREFCNT_dec (GvAV (PL_defgv));
568 GvAV (PL_defgv) = coro->args; coro->args = 0;
569
570 Zero (&myop, 1, LOGOP); 847 Zero (&myop, 1, UNOP);
571 myop.op_next = Nullop; 848 myop.op_next = Nullop;
572 myop.op_flags = OPf_WANT_VOID; 849 myop.op_flags = OPf_WANT_VOID;
573 850
574 PUSHMARK (SP); 851 PUSHMARK (SP);
575 XPUSHs (av_shift (GvAV (PL_defgv))); 852 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
576 PUTBACK; 853 PUTBACK;
577 PL_op = (OP *)&myop; 854 PL_op = (OP *)&myop;
578 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
579 SPAGAIN; 856 SPAGAIN;
580 } 857 }
581 858
582 ENTER; /* necessary e.g. for dounwind */ 859 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub.
861 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
862 * so we ENTER here for symmetry.
863 */
864 ENTER;
865}
866
867static void
868coro_destruct (pTHX_ struct coro *coro)
869{
870 if (!IN_DESTRUCT)
871 {
872 /* restore all saved variables and stuff */
873 LEAVE_SCOPE (0);
874 assert (PL_tmps_floor == -1);
875
876 /* free all temporaries */
877 FREETMPS;
878 assert (PL_tmps_ix == -1);
879
880 /* unwind all extra stacks */
881 POPSTACK_TO (PL_mainstack);
882
883 /* unwind main stack */
884 dounwind (-1);
885 }
886
887 SvREFCNT_dec (GvSV (PL_defgv));
888 SvREFCNT_dec (GvAV (PL_defgv));
889 SvREFCNT_dec (GvSV (PL_errgv));
890 SvREFCNT_dec (PL_defoutgv);
891 SvREFCNT_dec (PL_rs);
892 SvREFCNT_dec (GvSV (irsgv));
893
894 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook);
896
897 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw);
899
900 coro_destruct_stacks (aTHX);
583} 901}
584 902
585static void 903static void
586free_coro_mortal (pTHX) 904free_coro_mortal (pTHX)
587{ 905{
588 if (coro_mortal) 906 if (expect_true (coro_mortal))
589 { 907 {
590 SvREFCNT_dec (coro_mortal); 908 SvREFCNT_dec (coro_mortal);
591 coro_mortal = 0; 909 coro_mortal = 0;
592 } 910 }
911}
912
913static int
914runops_trace (pTHX)
915{
916 COP *oldcop = 0;
917 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx;
920
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 {
923 PERL_ASYNC_CHECK ();
924
925 if (cctx->flags & CC_TRACE_ALL)
926 {
927 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
928 {
929 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
930 SV **bot, **top;
931 AV *av = newAV (); /* return values */
932 SV **cb;
933 dSP;
934
935 GV *gv = CvGV (cx->blk_sub.cv);
936 SV *fullname = sv_2mortal (newSV (0));
937 if (isGV (gv))
938 gv_efullname3 (fullname, gv, 0);
939
940 bot = PL_stack_base + cx->blk_oldsp + 1;
941 top = cx->blk_gimme == G_ARRAY ? SP + 1
942 : cx->blk_gimme == G_SCALAR ? bot + 1
943 : bot;
944
945 av_extend (av, top - bot);
946 while (bot < top)
947 av_push (av, SvREFCNT_inc_NN (*bot++));
948
949 PL_runops = RUNOPS_DEFAULT;
950 ENTER;
951 SAVETMPS;
952 EXTEND (SP, 3);
953 PUSHMARK (SP);
954 PUSHs (&PL_sv_no);
955 PUSHs (fullname);
956 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
957 PUTBACK;
958 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
959 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
960 SPAGAIN;
961 FREETMPS;
962 LEAVE;
963 PL_runops = runops_trace;
964 }
965
966 if (oldcop != PL_curcop)
967 {
968 oldcop = PL_curcop;
969
970 if (PL_curcop != &PL_compiling)
971 {
972 SV **cb;
973
974 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
975 {
976 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
977
978 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
979 {
980 runops_proc_t old_runops = PL_runops;
981 dSP;
982 GV *gv = CvGV (cx->blk_sub.cv);
983 SV *fullname = sv_2mortal (newSV (0));
984
985 if (isGV (gv))
986 gv_efullname3 (fullname, gv, 0);
987
988 PL_runops = RUNOPS_DEFAULT;
989 ENTER;
990 SAVETMPS;
991 EXTEND (SP, 3);
992 PUSHMARK (SP);
993 PUSHs (&PL_sv_yes);
994 PUSHs (fullname);
995 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
996 PUTBACK;
997 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
998 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
999 SPAGAIN;
1000 FREETMPS;
1001 LEAVE;
1002 PL_runops = runops_trace;
1003 }
1004
1005 oldcxix = cxstack_ix;
1006 }
1007
1008 if (cctx->flags & CC_TRACE_LINE)
1009 {
1010 dSP;
1011
1012 PL_runops = RUNOPS_DEFAULT;
1013 ENTER;
1014 SAVETMPS;
1015 EXTEND (SP, 3);
1016 PL_runops = RUNOPS_DEFAULT;
1017 PUSHMARK (SP);
1018 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1019 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1020 PUTBACK;
1021 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1022 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1023 SPAGAIN;
1024 FREETMPS;
1025 LEAVE;
1026 PL_runops = runops_trace;
1027 }
1028 }
1029 }
1030 }
1031 }
1032
1033 TAINT_NOT;
1034 return 0;
1035}
1036
1037static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1039{
1040 ta->prev = (struct coro *)cctx;
1041 ta->next = 0;
593} 1042}
594 1043
595/* inject a fake call to Coro::State::_cctx_init into the execution */ 1044/* inject a fake call to Coro::State::_cctx_init into the execution */
596/* _cctx_init should be careful, as it could be called at almost any time */ 1045/* _cctx_init should be careful, as it could be called at almost any time */
597/* during execution of a perl program */ 1046/* during execution of a perl program */
1047/* also initialises PL_top_env */
598static void NOINLINE 1048static void NOINLINE
599prepare_cctx (pTHX_ coro_cctx *cctx) 1049cctx_prepare (pTHX_ coro_cctx *cctx)
600{ 1050{
601 dSP; 1051 dSP;
602 LOGOP myop; 1052 UNOP myop;
603 1053
1054 PL_top_env = &PL_start_env;
1055
1056 if (cctx->flags & CC_TRACE)
1057 PL_runops = runops_trace;
1058
604 Zero (&myop, 1, LOGOP); 1059 Zero (&myop, 1, UNOP);
605 myop.op_next = PL_op; 1060 myop.op_next = PL_op;
606 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1061 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
607 1062
608 PUSHMARK (SP); 1063 PUSHMARK (SP);
609 EXTEND (SP, 2); 1064 EXTEND (SP, 2);
610 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1065 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
611 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1066 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
612 PUTBACK; 1067 PUTBACK;
613 PL_op = (OP *)&myop; 1068 PL_op = (OP *)&myop;
614 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615 SPAGAIN; 1070 SPAGAIN;
616} 1071}
617 1072
1073/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
1074static void
1075transfer_tail (void)
1076{
1077 struct coro *next = (struct coro *)transfer_next;
1078 transfer_next = 0; //D for temporary assertion in transfer
1079 assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
1080
1081 free_coro_mortal (aTHX);
1082 UNLOCK;
1083
1084 if (expect_false (next->throw))
1085 {
1086 SV *exception = sv_2mortal (next->throw);
1087
1088 next->throw = 0;
1089 sv_setsv (ERRSV, exception);
1090 croak (0);
1091 }
1092}
1093
618/* 1094/*
619 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
620 */ 1096 */
621static void 1097static void
622coro_run (void *arg) 1098cctx_run (void *arg)
623{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
624 dTHX; 1106 dTHX;
625 1107
626 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1108 /* entersub called ENTER, but we never 'returned', undo that here */
627 UNLOCK; 1109 LEAVE;
628 1110
629 PL_top_env = &PL_start_env; 1111 /* we now skip the entersub that did lead to transfer() */
1112 PL_op = PL_op->op_next;
630 1113
631 /* inject a fake subroutine call to cctx_init */ 1114 /* inject a fake subroutine call to cctx_init */
632 prepare_cctx (aTHX_ (coro_cctx *)arg); 1115 cctx_prepare (aTHX_ (coro_cctx *)arg);
633 1116
1117 /* cctx_run is the alternative tail of transfer() */
1118 transfer_tail ();
1119
634 /* somebody or something will hit me for both perl_run and PL_restartop */ 1120 /* somebody or something will hit me for both perl_run and PL_restartop */
635 PL_restartop = PL_op; 1121 PL_restartop = PL_op;
636 perl_run (PL_curinterp); 1122 perl_run (PL_curinterp);
637 1123
638 /* 1124 /*
639 * If perl-run returns we assume exit() was being called or the coro 1125 * If perl-run returns we assume exit() was being called or the coro
640 * fell off the end, which seems to be the only valid (non-bug) 1126 * fell off the end, which seems to be the only valid (non-bug)
641 * reason for perl_run to return. We try to exit by jumping to the 1127 * reason for perl_run to return. We try to exit by jumping to the
642 * bootstrap-time "top" top_env, as we cannot restore the "main" 1128 * bootstrap-time "top" top_env, as we cannot restore the "main"
643 * coroutine as Coro has no such concept 1129 * coroutine as Coro has no such concept
644 */ 1130 */
645 PL_top_env = main_top_env; 1131 PL_top_env = main_top_env;
646 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 }
647} 1134}
648 1135
649static coro_cctx * 1136static coro_cctx *
650cctx_new () 1137cctx_new ()
651{ 1138{
652 coro_cctx *cctx; 1139 coro_cctx *cctx;
1140
1141 ++cctx_count;
1142 New (0, cctx, 1, coro_cctx);
1143
1144 cctx->gen = cctx_gen;
1145 cctx->flags = 0;
1146 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1147
1148 return cctx;
1149}
1150
1151/* create a new cctx only suitable as source */
1152static coro_cctx *
1153cctx_new_empty ()
1154{
1155 coro_cctx *cctx = cctx_new ();
1156
1157 cctx->sptr = 0;
1158 coro_create (&cctx->cctx, 0, 0, 0, 0);
1159
1160 return cctx;
1161}
1162
1163/* create a new cctx suitable as destination/running a perl interpreter */
1164static coro_cctx *
1165cctx_new_run ()
1166{
1167 coro_cctx *cctx = cctx_new ();
653 void *stack_start; 1168 void *stack_start;
654 size_t stack_size; 1169 size_t stack_size;
655 1170
656 ++cctx_count;
657
658 Newz (0, cctx, 1, coro_cctx);
659
660#if HAVE_MMAP 1171#if HAVE_MMAP
661
662 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1172 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
663 /* mmap supposedly does allocate-on-write for us */ 1173 /* mmap supposedly does allocate-on-write for us */
664 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
665 1175
666 if (cctx->sptr != (void *)-1) 1176 if (cctx->sptr != (void *)-1)
667 { 1177 {
668# if CORO_STACKGUARD 1178# if CORO_STACKGUARD
669 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
670# endif 1180# endif
671 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
672 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
673 cctx->mapped = 1; 1183 cctx->flags |= CC_MAPPED;
674 } 1184 }
675 else 1185 else
676#endif 1186#endif
677 { 1187 {
678 cctx->ssize = coro_stacksize * (long)sizeof (long); 1188 cctx->ssize = cctx_stacksize * (long)sizeof (long);
679 New (0, cctx->sptr, coro_stacksize, long); 1189 New (0, cctx->sptr, cctx_stacksize, long);
680 1190
681 if (!cctx->sptr) 1191 if (!cctx->sptr)
682 { 1192 {
683 perror ("FATAL: unable to allocate stack for coroutine"); 1193 perror ("FATAL: unable to allocate stack for coroutine");
684 _exit (EXIT_FAILURE); 1194 _exit (EXIT_FAILURE);
… …
687 stack_start = cctx->sptr; 1197 stack_start = cctx->sptr;
688 stack_size = cctx->ssize; 1198 stack_size = cctx->ssize;
689 } 1199 }
690 1200
691 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
692 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
693 1203
694 return cctx; 1204 return cctx;
695} 1205}
696 1206
697static void 1207static void
… …
699{ 1209{
700 if (!cctx) 1210 if (!cctx)
701 return; 1211 return;
702 1212
703 --cctx_count; 1213 --cctx_count;
1214 coro_destroy (&cctx->cctx);
704 1215
1216 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr)
1218 {
705#if CORO_USE_VALGRIND 1219#if CORO_USE_VALGRIND
706 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
707#endif 1221#endif
708 1222
709#if HAVE_MMAP 1223#if HAVE_MMAP
710 if (cctx->mapped) 1224 if (cctx->flags & CC_MAPPED)
711 munmap (cctx->sptr, cctx->ssize); 1225 munmap (cctx->sptr, cctx->ssize);
712 else 1226 else
713#endif 1227#endif
714 Safefree (cctx->sptr); 1228 Safefree (cctx->sptr);
1229 }
715 1230
716 Safefree (cctx); 1231 Safefree (cctx);
717} 1232}
1233
1234/* wether this cctx should be destructed */
1235#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
718 1236
719static coro_cctx * 1237static coro_cctx *
720cctx_get (pTHX) 1238cctx_get (pTHX)
721{ 1239{
722 while (cctx_first) 1240 while (expect_true (cctx_first))
723 { 1241 {
724 coro_cctx *cctx = cctx_first; 1242 coro_cctx *cctx = cctx_first;
725 cctx_first = cctx->next; 1243 cctx_first = cctx->next;
726 --cctx_idle; 1244 --cctx_idle;
727 1245
728 if (cctx->ssize >= coro_stacksize) 1246 if (expect_true (!CCTX_EXPIRED (cctx)))
729 return cctx; 1247 return cctx;
730 1248
731 cctx_destroy (cctx); 1249 cctx_destroy (cctx);
732 } 1250 }
733 1251
734 PL_op = PL_op->op_next;
735 return cctx_new (); 1252 return cctx_new_run ();
736} 1253}
737 1254
738static void 1255static void
739cctx_put (coro_cctx *cctx) 1256cctx_put (coro_cctx *cctx)
740{ 1257{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1259
741 /* free another cctx if overlimit */ 1260 /* free another cctx if overlimit */
742 if (cctx_idle >= MAX_IDLE_CCTX) 1261 if (expect_false (cctx_idle >= cctx_max_idle))
743 { 1262 {
744 coro_cctx *first = cctx_first; 1263 coro_cctx *first = cctx_first;
745 cctx_first = first->next; 1264 cctx_first = first->next;
746 --cctx_idle; 1265 --cctx_idle;
747 1266
748 assert (!first->inuse);
749 cctx_destroy (first); 1267 cctx_destroy (first);
750 } 1268 }
751 1269
752 ++cctx_idle; 1270 ++cctx_idle;
753 cctx->next = cctx_first; 1271 cctx->next = cctx_first;
754 cctx_first = cctx; 1272 cctx_first = cctx;
755} 1273}
756 1274
757/** coroutine switching *****************************************************/ 1275/** coroutine switching *****************************************************/
758 1276
759/* never call directly, always through the coro_state_transfer global variable */ 1277static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{
1280 if (expect_true (prev != next))
1281 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1283 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1284
1285 if (expect_false (next->flags & CF_RUNNING))
1286 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1287
1288 if (expect_false (next->flags & CF_DESTROYED))
1289 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1290
1291#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1294#endif
1295 }
1296}
1297
1298/* always use the TRANSFER macro */
760static void NOINLINE 1299static void NOINLINE
761transfer (pTHX_ struct coro *prev, struct coro *next) 1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
762{ 1301{
763 dSTACKLEVEL; 1302 dSTACKLEVEL;
764 1303
765 /* sometimes transfer is only called to set idle_sp */ 1304 /* sometimes transfer is only called to set idle_sp */
766 if (!next) 1305 if (expect_false (!next))
767 { 1306 {
768 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1307 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
769 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1308 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
770 } 1309 }
771 else if (prev != next) 1310 else if (expect_true (prev != next))
772 { 1311 {
773 coro_cctx *prev__cctx; 1312 coro_cctx *prev__cctx;
774 1313
775 if (prev->flags & CF_NEW) 1314 if (expect_false (prev->flags & CF_NEW))
776 { 1315 {
777 /* create a new empty context */ 1316 /* create a new empty/source context */
778 Newz (0, prev->cctx, 1, coro_cctx); 1317 prev->cctx = cctx_new_empty ();
779 prev->cctx->inuse = 1;
780 prev->flags &= ~CF_NEW; 1318 prev->flags &= ~CF_NEW;
781 prev->flags |= CF_RUNNING; 1319 prev->flags |= CF_RUNNING;
782 } 1320 }
783 1321
784 /*TODO: must not croak here */
785 if (!prev->flags & CF_RUNNING)
786 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
787
788 if (next->flags & CF_RUNNING)
789 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
790
791 if (next->flags & CF_DESTROYED)
792 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
793
794 prev->flags &= ~CF_RUNNING; 1322 prev->flags &= ~CF_RUNNING;
795 next->flags |= CF_RUNNING; 1323 next->flags |= CF_RUNNING;
796 1324
797 LOCK; 1325 LOCK;
798 1326
1327 /* first get rid of the old state */
1328 save_perl (aTHX_ prev);
1329
799 if (next->flags & CF_NEW) 1330 if (expect_false (next->flags & CF_NEW))
800 { 1331 {
801 /* need to start coroutine */ 1332 /* need to start coroutine */
802 next->flags &= ~CF_NEW; 1333 next->flags &= ~CF_NEW;
803 /* first get rid of the old state */
804 save_perl (aTHX_ prev);
805 /* setup coroutine call */ 1334 /* setup coroutine call */
806 setup_coro (aTHX_ next); 1335 coro_setup (aTHX_ next);
807 /* need a new stack */
808 assert (!next->cctx);
809 } 1336 }
810 else 1337 else
811 {
812 /* coroutine already started */
813 save_perl (aTHX_ prev);
814 load_perl (aTHX_ next); 1338 load_perl (aTHX_ next);
815 }
816 1339
817 prev__cctx = prev->cctx; 1340 prev__cctx = prev->cctx;
818 1341
819 /* possibly "free" the cctx */ 1342 /* possibly "free" the cctx */
1343 if (expect_true (
820 if (prev__cctx->idle_sp == STACKLEVEL) 1344 prev__cctx->idle_sp == STACKLEVEL
1345 && !(prev__cctx->flags & CC_TRACE)
1346 && !force_cctx
1347 ))
821 { 1348 {
822 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
823 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
824 1351
825 prev->cctx = 0; 1352 prev->cctx = 0;
826 1353
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1355 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1356 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1357 if (!next->cctx)
1358 next->cctx = cctx_get (aTHX);
1359
827 cctx_put (prev__cctx); 1360 cctx_put (prev__cctx);
828 prev__cctx->inuse = 0;
829 } 1361 }
830 1362
1363 ++next->usecount;
1364
831 if (!next->cctx) 1365 if (expect_true (!next->cctx))
832 {
833 next->cctx = cctx_get (aTHX); 1366 next->cctx = cctx_get (aTHX);
834 assert (!next->cctx->inuse);
835 next->cctx->inuse = 1;
836 }
837 1367
1368 assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
1369 transfer_next = next;
1370
838 if (prev__cctx != next->cctx) 1371 if (expect_false (prev__cctx != next->cctx))
839 { 1372 {
840 prev__cctx->top_env = PL_top_env; 1373 prev__cctx->top_env = PL_top_env;
841 PL_top_env = next->cctx->top_env; 1374 PL_top_env = next->cctx->top_env;
842 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1375 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
843 } 1376 }
844 1377
845 free_coro_mortal (aTHX); 1378 transfer_tail ();
846 UNLOCK;
847 } 1379 }
848} 1380}
849 1381
850struct transfer_args 1382#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
851{
852 struct coro *prev, *next;
853};
854
855#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1383#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
856 1384
857/** high level stuff ********************************************************/ 1385/** high level stuff ********************************************************/
858 1386
859static int 1387static int
860coro_state_destroy (pTHX_ struct coro *coro) 1388coro_state_destroy (pTHX_ struct coro *coro)
… …
877 1405
878 if (coro->mainstack && coro->mainstack != main_mainstack) 1406 if (coro->mainstack && coro->mainstack != main_mainstack)
879 { 1407 {
880 struct coro temp; 1408 struct coro temp;
881 1409
882 assert (!(coro->flags & CF_RUNNING));
883
884 Zero (&temp, 1, struct coro);
885 temp.save = CORO_SAVE_ALL;
886
887 if (coro->flags & CF_RUNNING) 1410 if (coro->flags & CF_RUNNING)
888 croak ("FATAL: tried to destroy currently running coroutine"); 1411 croak ("FATAL: tried to destroy currently running coroutine");
889 1412
890 save_perl (aTHX_ &temp); 1413 save_perl (aTHX_ &temp);
891 load_perl (aTHX_ coro); 1414 load_perl (aTHX_ coro);
892 1415
893 coro_destroy_stacks (aTHX); 1416 coro_destruct (aTHX_ coro);
894 1417
895 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1418 load_perl (aTHX_ &temp);
896 1419
897 coro->mainstack = 0; 1420 coro->slot = 0;
898 } 1421 }
899 1422
900 cctx_destroy (coro->cctx); 1423 cctx_destroy (coro->cctx);
901 SvREFCNT_dec (coro->args); 1424 SvREFCNT_dec (coro->args);
902 1425
903 if (coro->next) coro->next->prev = coro->prev; 1426 if (coro->next) coro->next->prev = coro->prev;
904 if (coro->prev) coro->prev->next = coro->next; 1427 if (coro->prev) coro->prev->next = coro->next;
905 if (coro == first) first = coro->next; 1428 if (coro == coro_first) coro_first = coro->next;
906 1429
907 return 1; 1430 return 1;
908} 1431}
909 1432
910static int 1433static int
… …
943#else 1466#else
944# define MGf_DUP 0 1467# define MGf_DUP 0
945#endif 1468#endif
946}; 1469};
947 1470
948static struct coro *
949SvSTATE_ (pTHX_ SV *coro)
950{
951 HV *stash;
952 MAGIC *mg;
953
954 if (SvROK (coro))
955 coro = SvRV (coro);
956
957 stash = SvSTASH (coro);
958 if (stash != coro_stash && stash != coro_state_stash)
959 {
960 /* very slow, but rare, check */
961 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
962 croak ("Coro::State object required");
963 }
964
965 mg = CORO_MAGIC (coro);
966 return (struct coro *)mg->mg_ptr;
967}
968
969#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
970
971static void 1471static void
972prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
973{ 1473{
974 ta->prev = SvSTATE (prev_sv); 1474 ta->prev = SvSTATE (prev_sv);
975 ta->next = SvSTATE (next_sv); 1475 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta);
976} 1477}
977 1478
978static void 1479static void
979api_transfer (SV *prev_sv, SV *next_sv) 1480api_transfer (SV *prev_sv, SV *next_sv)
980{ 1481{
981 dTHX; 1482 dTHX;
982 struct transfer_args ta; 1483 struct transfer_args ta;
983 1484
984 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
985 TRANSFER (ta); 1486 TRANSFER (ta, 1);
986}
987
988static int
989api_save (SV *coro_sv, int new_save)
990{
991 dTHX;
992 struct coro *coro = SvSTATE (coro_sv);
993 int old_save = coro->save;
994
995 if (new_save >= 0)
996 coro->save = new_save;
997
998 return old_save;
999} 1487}
1000 1488
1001/** Coro ********************************************************************/ 1489/** Coro ********************************************************************/
1002 1490
1003static void 1491static void
… …
1005{ 1493{
1006 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1007} 1495}
1008 1496
1009static SV * 1497static SV *
1010coro_deq (pTHX_ int min_prio) 1498coro_deq (pTHX)
1011{ 1499{
1012 int prio = PRIO_MAX - PRIO_MIN; 1500 int prio;
1013 1501
1014 min_prio -= PRIO_MIN;
1015 if (min_prio < 0)
1016 min_prio = 0;
1017
1018 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1019 if (AvFILLp (coro_ready [prio]) >= 0) 1503 if (AvFILLp (coro_ready [prio]) >= 0)
1020 return av_shift (coro_ready [prio]); 1504 return av_shift (coro_ready [prio]);
1021 1505
1022 return 0; 1506 return 0;
1023} 1507}
… …
1025static int 1509static int
1026api_ready (SV *coro_sv) 1510api_ready (SV *coro_sv)
1027{ 1511{
1028 dTHX; 1512 dTHX;
1029 struct coro *coro; 1513 struct coro *coro;
1514 SV *sv_hook;
1515 void (*xs_hook)(void);
1030 1516
1031 if (SvROK (coro_sv)) 1517 if (SvROK (coro_sv))
1032 coro_sv = SvRV (coro_sv); 1518 coro_sv = SvRV (coro_sv);
1033 1519
1034 coro = SvSTATE (coro_sv); 1520 coro = SvSTATE (coro_sv);
… …
1037 return 0; 1523 return 0;
1038 1524
1039 coro->flags |= CF_READY; 1525 coro->flags |= CF_READY;
1040 1526
1041 LOCK; 1527 LOCK;
1528
1529 sv_hook = coro_nready ? 0 : coro_readyhook;
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531
1042 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1043 ++coro_nready; 1533 ++coro_nready;
1534
1044 UNLOCK; 1535 UNLOCK;
1536
1537 if (sv_hook)
1538 {
1539 dSP;
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1045 1555
1046 return 1; 1556 return 1;
1047} 1557}
1048 1558
1049static int 1559static int
… …
1059 SV *prev_sv, *next_sv; 1569 SV *prev_sv, *next_sv;
1060 1570
1061 for (;;) 1571 for (;;)
1062 { 1572 {
1063 LOCK; 1573 LOCK;
1064 next_sv = coro_deq (aTHX_ PRIO_MIN); 1574 next_sv = coro_deq (aTHX);
1065 1575
1066 /* nothing to schedule: call the idle handler */ 1576 /* nothing to schedule: call the idle handler */
1067 if (!next_sv) 1577 if (expect_false (!next_sv))
1068 { 1578 {
1069 dSP; 1579 dSP;
1070 UNLOCK; 1580 UNLOCK;
1071 1581
1072 ENTER; 1582 ENTER;
1073 SAVETMPS; 1583 SAVETMPS;
1074 1584
1075 PUSHMARK (SP); 1585 PUSHMARK (SP);
1076 PUTBACK; 1586 PUTBACK;
1077 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1587 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1588 SPAGAIN;
1078 1589
1079 FREETMPS; 1590 FREETMPS;
1080 LEAVE; 1591 LEAVE;
1081 continue; 1592 continue;
1082 } 1593 }
1083 1594
1084 ta->next = SvSTATE (next_sv); 1595 ta->next = SvSTATE (next_sv);
1085 1596
1086 /* cannot transfer to destroyed coros, skip and look for next */ 1597 /* cannot transfer to destroyed coros, skip and look for next */
1087 if (ta->next->flags & CF_DESTROYED) 1598 if (expect_false (ta->next->flags & CF_DESTROYED))
1088 { 1599 {
1089 UNLOCK; 1600 UNLOCK;
1090 SvREFCNT_dec (next_sv); 1601 SvREFCNT_dec (next_sv);
1091 /* coro_nready is already taken care of by destroy */ 1602 /* coro_nready has already been taken care of by destroy */
1092 continue; 1603 continue;
1093 } 1604 }
1094 1605
1095 --coro_nready; 1606 --coro_nready;
1096 UNLOCK; 1607 UNLOCK;
1097 break; 1608 break;
1098 } 1609 }
1099 1610
1100 /* free this only after the transfer */ 1611 /* free this only after the transfer */
1101 prev_sv = SvRV (coro_current); 1612 prev_sv = SvRV (coro_current);
1102 SvRV_set (coro_current, next_sv);
1103 ta->prev = SvSTATE (prev_sv); 1613 ta->prev = SvSTATE (prev_sv);
1104 1614 TRANSFER_CHECK (*ta);
1105 assert (ta->next->flags & CF_READY); 1615 assert (ta->next->flags & CF_READY);
1106 ta->next->flags &= ~CF_READY; 1616 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv);
1107 1618
1108 LOCK; 1619 LOCK;
1109 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1110 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1111 UNLOCK; 1622 UNLOCK;
… …
1137{ 1648{
1138 dTHX; 1649 dTHX;
1139 struct transfer_args ta; 1650 struct transfer_args ta;
1140 1651
1141 prepare_schedule (aTHX_ &ta); 1652 prepare_schedule (aTHX_ &ta);
1142 TRANSFER (ta); 1653 TRANSFER (ta, 1);
1143} 1654}
1144 1655
1145static int 1656static int
1146api_cede (void) 1657api_cede (void)
1147{ 1658{
1148 dTHX; 1659 dTHX;
1149 struct transfer_args ta; 1660 struct transfer_args ta;
1150 1661
1151 prepare_cede (aTHX_ &ta); 1662 prepare_cede (aTHX_ &ta);
1152 1663
1153 if (ta.prev != ta.next) 1664 if (expect_true (ta.prev != ta.next))
1154 { 1665 {
1155 TRANSFER (ta); 1666 TRANSFER (ta, 1);
1156 return 1; 1667 return 1;
1157 } 1668 }
1158 else 1669 else
1159 return 0; 1670 return 0;
1160} 1671}
… …
1165 dTHX; 1676 dTHX;
1166 struct transfer_args ta; 1677 struct transfer_args ta;
1167 1678
1168 if (prepare_cede_notself (aTHX_ &ta)) 1679 if (prepare_cede_notself (aTHX_ &ta))
1169 { 1680 {
1170 TRANSFER (ta); 1681 TRANSFER (ta, 1);
1171 return 1; 1682 return 1;
1172 } 1683 }
1173 else 1684 else
1174 return 0; 1685 return 0;
1175} 1686}
1176 1687
1688static void
1689api_trace (SV *coro_sv, int flags)
1690{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv);
1693
1694 if (flags & CC_TRACE)
1695 {
1696 if (!coro->cctx)
1697 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack");
1700
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 {
1705 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1706
1707 if (coro->flags & CF_RUNNING)
1708 PL_runops = RUNOPS_DEFAULT;
1709 else
1710 coro->slot->runops = RUNOPS_DEFAULT;
1711 }
1712}
1713
1714#if 0
1715static int
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1717{
1718 AV *padlist;
1719 AV *av = (AV *)mg->mg_obj;
1720
1721 abort ();
1722
1723 return 0;
1724}
1725
1726static MGVTBL coro_gensub_vtbl = {
1727 0, 0, 0, 0,
1728 coro_gensub_free
1729};
1730#endif
1731
1732/*****************************************************************************/
1733/* PerlIO::cede */
1734
1735typedef struct
1736{
1737 PerlIOBuf base;
1738 NV next, every;
1739} PerlIOCede;
1740
1741static IV
1742PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1743{
1744 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1745
1746 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1747 self->next = nvtime () + self->every;
1748
1749 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1750}
1751
1752static SV *
1753PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1754{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756
1757 return newSVnv (self->every);
1758}
1759
1760static IV
1761PerlIOCede_flush (pTHX_ PerlIO *f)
1762{
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime ();
1765
1766 if (now >= self->next)
1767 {
1768 api_cede ();
1769 self->next = now + self->every;
1770 }
1771
1772 return PerlIOBuf_flush (aTHX_ f);
1773}
1774
1775static PerlIO_funcs PerlIO_cede =
1776{
1777 sizeof(PerlIO_funcs),
1778 "cede",
1779 sizeof(PerlIOCede),
1780 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1781 PerlIOCede_pushed,
1782 PerlIOBuf_popped,
1783 PerlIOBuf_open,
1784 PerlIOBase_binmode,
1785 PerlIOCede_getarg,
1786 PerlIOBase_fileno,
1787 PerlIOBuf_dup,
1788 PerlIOBuf_read,
1789 PerlIOBuf_unread,
1790 PerlIOBuf_write,
1791 PerlIOBuf_seek,
1792 PerlIOBuf_tell,
1793 PerlIOBuf_close,
1794 PerlIOCede_flush,
1795 PerlIOBuf_fill,
1796 PerlIOBase_eof,
1797 PerlIOBase_error,
1798 PerlIOBase_clearerr,
1799 PerlIOBase_setlinebuf,
1800 PerlIOBuf_get_base,
1801 PerlIOBuf_bufsiz,
1802 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt,
1805};
1806
1807
1177MODULE = Coro::State PACKAGE = Coro::State 1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1178 1809
1179PROTOTYPES: DISABLE 1810PROTOTYPES: DISABLE
1180 1811
1181BOOT: 1812BOOT:
1182{ 1813{
1183#ifdef USE_ITHREADS 1814#ifdef USE_ITHREADS
1184 MUTEX_INIT (&coro_mutex); 1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT;
1818# endif
1185#endif 1819#endif
1186 BOOT_PAGESIZE; 1820 BOOT_PAGESIZE;
1187 1821
1822 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1823 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1824
1825 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1826 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1827 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1828
1829 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1830 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1831 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1832
1188 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1833 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1189 1834
1190 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1835 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1191 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1836 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1192 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1193 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1194 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1195 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1837 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1196 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1838 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1197 1839
1198 main_mainstack = PL_mainstack; 1840 main_mainstack = PL_mainstack;
1199 main_top_env = PL_top_env; 1841 main_top_env = PL_top_env;
1200 1842
1201 while (main_top_env->je_prev) 1843 while (main_top_env->je_prev)
1202 main_top_env = main_top_env->je_prev; 1844 main_top_env = main_top_env->je_prev;
1203 1845
1204 coroapi.ver = CORO_API_VERSION; 1846 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION;
1205 coroapi.transfer = api_transfer; 1848 coroapi.transfer = api_transfer;
1849
1850 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852
1853 if (!svp) croak ("Time::HiRes is required");
1854 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1855
1856 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1857 }
1206 1858
1207 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1859 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1208} 1860}
1209 1861
1210SV * 1862SV *
1211new (char *klass, ...) 1863new (char *klass, ...)
1212 CODE: 1864 CODE:
1213{ 1865{
1214 struct coro *coro; 1866 struct coro *coro;
1867 MAGIC *mg;
1215 HV *hv; 1868 HV *hv;
1216 int i; 1869 int i;
1217 1870
1218 Newz (0, coro, 1, struct coro); 1871 Newz (0, coro, 1, struct coro);
1219 coro->args = newAV (); 1872 coro->args = newAV ();
1220 coro->save = CORO_SAVE_DEF;
1221 coro->flags = CF_NEW; 1873 coro->flags = CF_NEW;
1222 1874
1223 if (first) first->prev = coro; 1875 if (coro_first) coro_first->prev = coro;
1224 coro->next = first; 1876 coro->next = coro_first;
1225 first = coro; 1877 coro_first = coro;
1226 1878
1227 coro->hv = hv = newHV (); 1879 coro->hv = hv = newHV ();
1228 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1880 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1881 mg->mg_flags |= MGf_DUP;
1229 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1882 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1230 1883
1884 av_extend (coro->args, items - 1);
1231 for (i = 1; i < items; i++) 1885 for (i = 1; i < items; i++)
1232 av_push (coro->args, newSVsv (ST (i))); 1886 av_push (coro->args, newSVsv (ST (i)));
1233} 1887}
1234 OUTPUT: 1888 OUTPUT:
1235 RETVAL 1889 RETVAL
1236 1890
1237int 1891# these not obviously related functions are all rolled into the same xs
1238save (SV *coro, int new_save = -1) 1892# function to increase chances that they all will call transfer with the same
1239 CODE: 1893# stack offset
1240 RETVAL = api_save (coro, new_save);
1241 OUTPUT:
1242 RETVAL
1243
1244int
1245save_also (SV *coro_sv, int save_also)
1246 CODE:
1247{
1248 struct coro *coro = SvSTATE (coro_sv);
1249 RETVAL = coro->save;
1250 coro->save |= save_also;
1251}
1252 OUTPUT:
1253 RETVAL
1254
1255void 1894void
1256_set_stacklevel (...) 1895_set_stacklevel (...)
1257 ALIAS: 1896 ALIAS:
1258 Coro::State::transfer = 1 1897 Coro::State::transfer = 1
1259 Coro::schedule = 2 1898 Coro::schedule = 2
… …
1261 Coro::cede_notself = 4 1900 Coro::cede_notself = 4
1262 CODE: 1901 CODE:
1263{ 1902{
1264 struct transfer_args ta; 1903 struct transfer_args ta;
1265 1904
1905 PUTBACK;
1266 switch (ix) 1906 switch (ix)
1267 { 1907 {
1268 case 0: 1908 case 0:
1269 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1270 ta.next = 0;
1271 break; 1910 break;
1272 1911
1273 case 1: 1912 case 1:
1274 if (items != 2) 1913 if (items != 2)
1275 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1914 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1276 1915
1277 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1916 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1278 break; 1917 break;
1279 1918
1280 case 2: 1919 case 2:
… …
1289 if (!prepare_cede_notself (aTHX_ &ta)) 1928 if (!prepare_cede_notself (aTHX_ &ta))
1290 XSRETURN_EMPTY; 1929 XSRETURN_EMPTY;
1291 1930
1292 break; 1931 break;
1293 } 1932 }
1933 SPAGAIN;
1294 1934
1295 BARRIER; 1935 BARRIER;
1936 PUTBACK;
1296 TRANSFER (ta); 1937 TRANSFER (ta, 0);
1297 1938 SPAGAIN; /* might be the sp of a different coroutine now */
1298 if (GIMME_V != G_VOID && ta.next != ta.prev) 1939 /* be extra careful not to ever do anything after TRANSFER */
1299 XSRETURN_YES;
1300} 1940}
1301 1941
1302bool 1942bool
1303_destroy (SV *coro_sv) 1943_destroy (SV *coro_sv)
1304 CODE: 1944 CODE:
1305 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1306 OUTPUT: 1946 OUTPUT:
1307 RETVAL 1947 RETVAL
1308 1948
1309void 1949void
1310_exit (code) 1950_exit (int code)
1311 int code
1312 PROTOTYPE: $ 1951 PROTOTYPE: $
1313 CODE: 1952 CODE:
1314 _exit (code); 1953 _exit (code);
1315 1954
1316int 1955int
1317cctx_stacksize (int new_stacksize = 0) 1956cctx_stacksize (int new_stacksize = 0)
1318 CODE: 1957 CODE:
1319 RETVAL = coro_stacksize; 1958 RETVAL = cctx_stacksize;
1320 if (new_stacksize) 1959 if (new_stacksize)
1960 {
1321 coro_stacksize = new_stacksize; 1961 cctx_stacksize = new_stacksize;
1962 ++cctx_gen;
1963 }
1964 OUTPUT:
1965 RETVAL
1966
1967int
1968cctx_max_idle (int max_idle = 0)
1969 CODE:
1970 RETVAL = cctx_max_idle;
1971 if (max_idle > 1)
1972 cctx_max_idle = max_idle;
1322 OUTPUT: 1973 OUTPUT:
1323 RETVAL 1974 RETVAL
1324 1975
1325int 1976int
1326cctx_count () 1977cctx_count ()
… …
1339void 1990void
1340list () 1991list ()
1341 PPCODE: 1992 PPCODE:
1342{ 1993{
1343 struct coro *coro; 1994 struct coro *coro;
1344 for (coro = first; coro; coro = coro->next) 1995 for (coro = coro_first; coro; coro = coro->next)
1345 if (coro->hv) 1996 if (coro->hv)
1346 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 1997 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1347} 1998}
1348 1999
1349void 2000void
1350_eval (SV *coro_sv, SV *coderef) 2001call (Coro::State coro, SV *coderef)
2002 ALIAS:
2003 eval = 1
1351 CODE: 2004 CODE:
1352{ 2005{
1353 struct coro *coro = SvSTATE (coro_sv); 2006 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1354 if (coro->mainstack)
1355 { 2007 {
1356 struct coro temp; 2008 struct coro temp;
1357 Zero (&temp, 1, struct coro);
1358 temp.save = CORO_SAVE_ALL;
1359 2009
1360 if (!(coro->flags & CF_RUNNING)) 2010 if (!(coro->flags & CF_RUNNING))
1361 { 2011 {
2012 PUTBACK;
1362 save_perl (aTHX_ &temp); 2013 save_perl (aTHX_ &temp);
1363 load_perl (aTHX_ coro); 2014 load_perl (aTHX_ coro);
1364 } 2015 }
1365 2016
1366 { 2017 {
1367 dSP; 2018 dSP;
1368 ENTER; 2019 ENTER;
1369 SAVETMPS; 2020 SAVETMPS;
2021 PUTBACK;
2022 PUSHSTACK;
1370 PUSHMARK (SP); 2023 PUSHMARK (SP);
1371 PUTBACK; 2024
2025 if (ix)
2026 eval_sv (coderef, 0);
2027 else
1372 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2028 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2029
2030 POPSTACK;
1373 SPAGAIN; 2031 SPAGAIN;
1374 FREETMPS; 2032 FREETMPS;
1375 LEAVE; 2033 LEAVE;
1376 PUTBACK; 2034 PUTBACK;
1377 } 2035 }
1378 2036
1379 if (!(coro->flags & CF_RUNNING)) 2037 if (!(coro->flags & CF_RUNNING))
1380 { 2038 {
1381 save_perl (aTHX_ coro); 2039 save_perl (aTHX_ coro);
1382 load_perl (aTHX_ &temp); 2040 load_perl (aTHX_ &temp);
2041 SPAGAIN;
1383 } 2042 }
1384 } 2043 }
1385} 2044}
1386 2045
1387SV * 2046SV *
1388is_ready (SV *coro_sv) 2047is_ready (Coro::State coro)
1389 PROTOTYPE: $ 2048 PROTOTYPE: $
1390 ALIAS: 2049 ALIAS:
1391 is_ready = CF_READY 2050 is_ready = CF_READY
1392 is_running = CF_RUNNING 2051 is_running = CF_RUNNING
1393 is_new = CF_NEW 2052 is_new = CF_NEW
1394 is_destroyed = CF_DESTROYED 2053 is_destroyed = CF_DESTROYED
1395 CODE: 2054 CODE:
1396 struct coro *coro = SvSTATE (coro_sv);
1397 RETVAL = boolSV (coro->flags & ix); 2055 RETVAL = boolSV (coro->flags & ix);
1398 OUTPUT: 2056 OUTPUT:
1399 RETVAL 2057 RETVAL
1400 2058
2059void
2060throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$
2062 CODE:
2063 SvREFCNT_dec (self->throw);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2065
2066void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2068
2069SV *
2070has_cctx (Coro::State coro)
2071 PROTOTYPE: $
2072 CODE:
2073 RETVAL = boolSV (!!coro->cctx);
2074 OUTPUT:
2075 RETVAL
2076
2077int
2078is_traced (Coro::State coro)
2079 PROTOTYPE: $
2080 CODE:
2081 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2082 OUTPUT:
2083 RETVAL
2084
2085UV
2086rss (Coro::State coro)
2087 PROTOTYPE: $
2088 ALIAS:
2089 usecount = 1
2090 CODE:
2091 switch (ix)
2092 {
2093 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2094 case 1: RETVAL = coro->usecount; break;
2095 }
2096 OUTPUT:
2097 RETVAL
2098
2099void
2100force_cctx ()
2101 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0;
2104
2105void
2106swap_defsv (Coro::State self)
2107 PROTOTYPE: $
2108 ALIAS:
2109 swap_defav = 1
2110 CODE:
2111 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state");
2113 else
2114 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117
2118 SV *tmp = *src; *src = *dst; *dst = tmp;
2119 }
1401 2120
1402MODULE = Coro::State PACKAGE = Coro 2121MODULE = Coro::State PACKAGE = Coro
1403 2122
1404BOOT: 2123BOOT:
1405{ 2124{
1406 int i; 2125 int i;
1407 2126
2127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2128 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2129 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2130
2131 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2132 SvREADONLY_on (coro_current);
2133
1408 coro_stash = gv_stashpv ("Coro", TRUE); 2134 coro_stash = gv_stashpv ("Coro", TRUE);
1409 2135
1410 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1411 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1412 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2138 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1413 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2139 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1414 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2140 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1415 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2141 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1416 2142
1417 coro_current = get_sv ("Coro::current", FALSE);
1418 SvREADONLY_on (coro_current);
1419
1420 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1421 coro_ready[i] = newAV (); 2144 coro_ready[i] = newAV ();
1422 2145
1423 { 2146 {
1424 SV *sv = perl_get_sv("Coro::API", 1); 2147 SV *sv = perl_get_sv ("Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1425 2149
1426 coroapi.schedule = api_schedule; 2150 coroapi.schedule = api_schedule;
1427 coroapi.save = api_save;
1428 coroapi.cede = api_cede; 2151 coroapi.cede = api_cede;
1429 coroapi.cede_notself = api_cede_notself; 2152 coroapi.cede_notself = api_cede_notself;
1430 coroapi.ready = api_ready; 2153 coroapi.ready = api_ready;
1431 coroapi.is_ready = api_is_ready; 2154 coroapi.is_ready = api_is_ready;
1432 coroapi.nready = &coro_nready; 2155 coroapi.nready = &coro_nready;
… …
1441void 2164void
1442_set_current (SV *current) 2165_set_current (SV *current)
1443 PROTOTYPE: $ 2166 PROTOTYPE: $
1444 CODE: 2167 CODE:
1445 SvREFCNT_dec (SvRV (coro_current)); 2168 SvREFCNT_dec (SvRV (coro_current));
1446 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2169 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2170
2171void
2172_set_readyhook (SV *hook)
2173 PROTOTYPE: $
2174 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook);
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178 UNLOCK;
1447 2179
1448int 2180int
1449prio (Coro::State coro, int newprio = 0) 2181prio (Coro::State coro, int newprio = 0)
1450 ALIAS: 2182 ALIAS:
1451 nice = 1 2183 nice = 1
… …
1481 CODE: 2213 CODE:
1482 RETVAL = coro_nready; 2214 RETVAL = coro_nready;
1483 OUTPUT: 2215 OUTPUT:
1484 RETVAL 2216 RETVAL
1485 2217
2218# for async_pool speedup
2219void
2220_pool_1 (SV *cb)
2221 CODE:
2222{
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current);
2225 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av;
2228 int i, len;
2229
2230 if (!invoke)
2231 {
2232 SV *old = PL_diehook;
2233 PL_diehook = 0;
2234 SvREFCNT_dec (old);
2235 croak ("\3async_pool terminate\2\n");
2236 }
2237
2238 SvREFCNT_dec (coro->saved_deffh);
2239 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2240
2241 hv_store (hv, "desc", sizeof ("desc") - 1,
2242 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2243
2244 invoke_av = (AV *)SvRV (invoke);
2245 len = av_len (invoke_av);
2246
2247 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2248
2249 if (len > 0)
2250 {
2251 av_fill (defav, len - 1);
2252 for (i = 0; i < len; ++i)
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2254 }
2255
2256 SvREFCNT_dec (invoke);
2257}
2258
2259void
2260_pool_2 (SV *cb)
2261 CODE:
2262{
2263 struct coro *coro = SvSTATE (coro_current);
2264
2265 sv_setsv (cb, &PL_sv_undef);
2266
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0;
2269
2270 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2271 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2272 {
2273 SV *old = PL_diehook;
2274 PL_diehook = 0;
2275 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n");
2277 }
2278
2279 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282
2283 coro->prio = 0;
2284
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0);
2287
2288 av_push (av_async_pool, newSVsv (coro_current));
2289}
2290
2291#if 0
2292
2293void
2294_generator_call (...)
2295 PROTOTYPE: @
2296 PPCODE:
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298 xxxx
2299 abort ();
2300
2301SV *
2302gensub (SV *sub, ...)
2303 PROTOTYPE: &;@
2304 CODE:
2305{
2306 struct coro *coro;
2307 MAGIC *mg;
2308 CV *xcv;
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2310 int i;
2311
2312 CvGV (ncv) = CvGV (cv);
2313 CvFILE (ncv) = CvFILE (cv);
2314
2315 Newz (0, coro, 1, struct coro);
2316 coro->args = newAV ();
2317 coro->flags = CF_NEW;
2318
2319 av_extend (coro->args, items - 1);
2320 for (i = 1; i < items; i++)
2321 av_push (coro->args, newSVsv (ST (i)));
2322
2323 CvISXSUB_on (ncv);
2324 CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328 CvXSUB (ncv) = CvXSUB (xcv);
2329 CvANON_on (ncv);
2330
2331 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2332 RETVAL = newRV_noinc ((SV *)ncv);
2333}
2334 OUTPUT:
2335 RETVAL
2336
2337#endif
2338
2339
1486MODULE = Coro::State PACKAGE = Coro::AIO 2340MODULE = Coro::State PACKAGE = Coro::AIO
1487 2341
1488SV * 2342void
1489_get_state () 2343_get_state (SV *self)
1490 CODE: 2344 PPCODE:
1491{ 2345{
1492 struct io_state *data; 2346 AV *defav = GvAV (PL_defgv);
1493 2347 AV *av = newAV ();
2348 int i;
1494 RETVAL = newSV (sizeof (struct io_state)); 2349 SV *data_sv = newSV (sizeof (struct io_state));
1495 data = (struct io_state *)SvPVX (RETVAL); 2350 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1496 SvCUR_set (RETVAL, sizeof (struct io_state)); 2351 SvCUR_set (data_sv, sizeof (struct io_state));
1497 SvPOK_only (RETVAL); 2352 SvPOK_only (data_sv);
1498 2353
1499 data->errorno = errno; 2354 data->errorno = errno;
1500 data->laststype = PL_laststype; 2355 data->laststype = PL_laststype;
1501 data->laststatval = PL_laststatval; 2356 data->laststatval = PL_laststatval;
1502 data->statcache = PL_statcache; 2357 data->statcache = PL_statcache;
2358
2359 av_extend (av, AvFILLp (defav) + 1 + 1);
2360
2361 for (i = 0; i <= AvFILLp (defav); ++i)
2362 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2363
2364 av_push (av, data_sv);
2365
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2367
2368 api_ready (self);
1503} 2369}
1504 OUTPUT:
1505 RETVAL
1506 2370
1507void 2371void
1508_set_state (char *data_) 2372_set_state (SV *state)
1509 PROTOTYPE: $ 2373 PROTOTYPE: $
1510 CODE: 2374 PPCODE:
1511{ 2375{
1512 struct io_state *data = (void *)data_; 2376 AV *av = (AV *)SvRV (state);
2377 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2378 int i;
1513 2379
1514 errno = data->errorno; 2380 errno = data->errorno;
1515 PL_laststype = data->laststype; 2381 PL_laststype = data->laststype;
1516 PL_laststatval = data->laststatval; 2382 PL_laststatval = data->laststatval;
1517 PL_statcache = data->statcache; 2383 PL_statcache = data->statcache;
1518}
1519 2384
2385 EXTEND (SP, AvFILLp (av));
2386 for (i = 0; i < AvFILLp (av); ++i)
2387 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2388}
2389
2390
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392
2393BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395
2396SV *
2397_schedule (...)
2398 PROTOTYPE: @
2399 CODE:
2400{
2401 static int incede;
2402
2403 api_cede_notself ();
2404
2405 ++incede;
2406 while (coro_nready >= incede && api_cede ())
2407 ;
2408
2409 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede)
2411 {
2412 PUSHMARK (SP);
2413 PUTBACK;
2414 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2415 SPAGAIN;
2416 }
2417
2418 --incede;
2419}
2420
2421
2422MODULE = Coro::State PACKAGE = PerlIO::cede
2423
2424BOOT:
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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