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Comparing Coro/Coro/State.xs (file contents):
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC vs.
Revision 1.258 by root, Sun Nov 9 23:08:49 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 */
186
187static GV *irsgv; /* $/ */
188static GV *stdoutgv; /* *STDOUT */
189static SV *rv_diehook;
190static SV *rv_warnhook;
191static HV *hv_sig; /* %SIG */
192
193/* async_pool helper stuff */
194static SV *sv_pool_rss;
195static SV *sv_pool_size;
196static AV *av_async_pool;
197
198/* Coro::AnyEvent */
199static SV *sv_activity;
137 200
138static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
203
204enum {
205 CC_MAPPED = 0x01,
206 CC_NOREUSE = 0x02, /* throw this away after tracing */
207 CC_TRACE = 0x04,
208 CC_TRACE_SUB = 0x08, /* trace sub calls */
209 CC_TRACE_LINE = 0x10, /* trace each statement */
210 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
211};
140 212
141/* this is a structure representing a c-level coroutine */ 213/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 214typedef struct coro_cctx {
143 struct coro_cctx *next; 215 struct coro_cctx *next;
144 216
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 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 */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 224 JMPENV *top_env;
153 coro_context cctx; 225 coro_context cctx;
154 226
227 U32 gen;
155#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
156 int valgrind_id; 229 int valgrind_id;
157#endif 230#endif
158 char inuse, mapped; 231 unsigned char flags;
159} coro_cctx; 232} coro_cctx;
160 233
161enum { 234enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 235 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 236 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 237 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 238 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 239};
167 240
241/* the structure where most of the perl state is stored, overlaid on the cxstack */
242typedef struct {
243 SV *defsv;
244 AV *defav;
245 SV *errsv;
246 SV *irsgv;
247#define VAR(name,type) type name;
248# include "state.h"
249#undef VAR
250} perl_slots;
251
252#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
253
168/* this is a structure representing a perl-level coroutine */ 254/* this is a structure representing a perl-level coroutine */
169struct coro { 255struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 256 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 257 coro_cctx *cctx;
172 258
259 /* process data */
260 AV *mainstack;
261 perl_slots *slot; /* basically the saved sp */
262
173 /* data associated with this coroutine (initial args) */ 263 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 264 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 265 int flags; /* CF_ flags */
266 HV *hv; /* the perl hash associated with this coro, if any */
178 267
179 /* optionally saved, might be zero */ 268 /* statistics */
180 AV *defav; /* @_ */ 269 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
190 270
191 /* coro process data */ 271 /* coro process data */
192 int prio; 272 int prio;
273 SV *throw; /* exception to be thrown */
274
275 /* async_pool */
276 SV *saved_deffh;
277
278 /* linked list */
279 struct coro *next, *prev;
193}; 280};
194 281
195typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
196typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
197 284
… …
204#define PRIO_IDLE -3 291#define PRIO_IDLE -3
205#define PRIO_MIN -4 292#define PRIO_MIN -4
206 293
207/* for Coro.pm */ 294/* for Coro.pm */
208static SV *coro_current; 295static SV *coro_current;
296static SV *coro_readyhook;
209static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 297static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
210static int coro_nready; 298static int coro_nready;
299static struct coro *coro_first;
211 300
212/** lowlevel stuff **********************************************************/ 301/** lowlevel stuff **********************************************************/
302
303static SV *
304coro_get_sv (pTHX_ const char *name, int create)
305{
306#if PERL_VERSION_ATLEAST (5,10,0)
307 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
308 get_sv (name, create);
309#endif
310 return get_sv (name, create);
311}
312
313static AV *
314coro_get_av (pTHX_ const char *name, int create)
315{
316#if PERL_VERSION_ATLEAST (5,10,0)
317 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
318 get_av (name, create);
319#endif
320 return get_av (name, create);
321}
322
323static HV *
324coro_get_hv (pTHX_ const char *name, int create)
325{
326#if PERL_VERSION_ATLEAST (5,10,0)
327 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
328 get_hv (name, create);
329#endif
330 return get_hv (name, create);
331}
213 332
214static AV * 333static AV *
215coro_clone_padlist (pTHX_ CV *cv) 334coro_clone_padlist (pTHX_ CV *cv)
216{ 335{
217 AV *padlist = CvPADLIST (cv); 336 AV *padlist = CvPADLIST (cv);
218 AV *newpadlist, *newpad; 337 AV *newpadlist, *newpad;
219 338
220 newpadlist = newAV (); 339 newpadlist = newAV ();
221 AvREAL_off (newpadlist); 340 AvREAL_off (newpadlist);
222#if PERL_VERSION_ATLEAST (5,9,0) 341#if PERL_VERSION_ATLEAST (5,10,0)
223 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 342 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
224#else 343#else
225 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 344 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
226#endif 345#endif
227 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 346 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
228 --AvFILLp (padlist); 347 --AvFILLp (padlist);
229 348
230 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 349 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
231 av_store (newpadlist, 1, (SV *)newpad); 350 av_store (newpadlist, 1, (SV *)newpad);
232 351
233 return newpadlist; 352 return newpadlist;
234} 353}
235 354
… …
265 384
266 /* casting is fun. */ 385 /* casting is fun. */
267 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 386 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268 free_padlist (aTHX_ padlist); 387 free_padlist (aTHX_ padlist);
269 388
270 SvREFCNT_dec (av); 389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
271 390
272 return 0; 391 return 0;
273} 392}
274 393
275#define PERL_MAGIC_coro PERL_MAGIC_ext 394#define CORO_MAGIC_type_cv PERL_MAGIC_ext
395#define CORO_MAGIC_type_state PERL_MAGIC_ext
276 396
277static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 397static MGVTBL coro_cv_vtbl = {
398 0, 0, 0, 0,
399 coro_cv_free
400};
278 401
279#define CORO_MAGIC(cv) \ 402#define CORO_MAGIC(sv, type) \
280 SvMAGIC (cv) \ 403 SvMAGIC (sv) \
281 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 404 ? SvMAGIC (sv)->mg_type == type \
282 ? SvMAGIC (cv) \ 405 ? SvMAGIC (sv) \
283 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 406 : mg_find (sv, type) \
284 : 0 407 : 0
408
409#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
410#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
411
412static struct coro *
413SvSTATE_ (pTHX_ SV *coro)
414{
415 HV *stash;
416 MAGIC *mg;
417
418 if (SvROK (coro))
419 coro = SvRV (coro);
420
421 if (expect_false (SvTYPE (coro) != SVt_PVHV))
422 croak ("Coro::State object required");
423
424 stash = SvSTASH (coro);
425 if (expect_false (stash != coro_stash && stash != coro_state_stash))
426 {
427 /* very slow, but rare, check */
428 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
429 croak ("Coro::State object required");
430 }
431
432 mg = CORO_MAGIC_state (coro);
433 return (struct coro *)mg->mg_ptr;
434}
435
436#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
285 437
286/* the next two functions merely cache the padlists */ 438/* the next two functions merely cache the padlists */
287static void 439static void
288get_padlist (pTHX_ CV *cv) 440get_padlist (pTHX_ CV *cv)
289{ 441{
290 MAGIC *mg = CORO_MAGIC (cv); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
291 AV *av; 443 AV *av;
292 444
293 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 445 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 446 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 447 else
296 { 448 {
297#if CORO_PREFER_PERL_FUNCTIONS 449#if CORO_PREFER_PERL_FUNCTIONS
298 /* this is probably cleaner, but also slower? */ 450 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */
299 CV *cp = Perl_cv_clone (cv); 452 CV *cp = Perl_cv_clone (cv);
300 CvPADLIST (cv) = CvPADLIST (cp); 453 CvPADLIST (cv) = CvPADLIST (cp);
301 CvPADLIST (cp) = 0; 454 CvPADLIST (cp) = 0;
302 SvREFCNT_dec (cp); 455 SvREFCNT_dec (cp);
303#else 456#else
… …
307} 460}
308 461
309static void 462static void
310put_padlist (pTHX_ CV *cv) 463put_padlist (pTHX_ CV *cv)
311{ 464{
312 MAGIC *mg = CORO_MAGIC (cv); 465 MAGIC *mg = CORO_MAGIC_cv (cv);
313 AV *av; 466 AV *av;
314 467
315 if (!mg) 468 if (expect_false (!mg))
316 { 469 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 }
322 470
323 av = (AV *)mg->mg_obj; 471 av = (AV *)mg->mg_obj;
324 472
325 if (AvFILLp (av) >= AvMAX (av)) 473 if (expect_false (AvFILLp (av) >= AvMAX (av)))
326 av_extend (av, AvMAX (av) + 1); 474 av_extend (av, AvMAX (av) + 1);
327 475
328 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 476 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329} 477}
330 478
331/** load & save, init *******************************************************/ 479/** 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
337 480
338static void 481static void
339load_perl (pTHX_ Coro__State c) 482load_perl (pTHX_ Coro__State c)
340{ 483{
484 perl_slots *slot = c->slot;
485 c->slot = 0;
486
487 PL_mainstack = c->mainstack;
488
489 GvSV (PL_defgv) = slot->defsv;
490 GvAV (PL_defgv) = slot->defav;
491 GvSV (PL_errgv) = slot->errsv;
492 GvSV (irsgv) = slot->irsgv;
493
341#define VAR(name,type) PL_ ## name = c->name; 494 #define VAR(name,type) PL_ ## name = slot->name;
342# include "state.h" 495 # include "state.h"
343#undef VAR 496 #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 }
364 497
365 { 498 {
366 dSP; 499 dSP;
500
367 CV *cv; 501 CV *cv;
368 502
369 /* now do the ugly restore mess */ 503 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 504 while (expect_true (cv = (CV *)POPs))
371 { 505 {
372 put_padlist (aTHX_ cv); /* mark this padlist as available */ 506 put_padlist (aTHX_ cv); /* mark this padlist as available */
373 CvDEPTH (cv) = PTR2IV (POPs); 507 CvDEPTH (cv) = PTR2IV (POPs);
374 CvPADLIST (cv) = (AV *)POPs; 508 CvPADLIST (cv) = (AV *)POPs;
375 } 509 }
376 510
377 PUTBACK; 511 PUTBACK;
378 } 512 }
379 assert (!PL_comppad || AvARRAY (PL_comppad));//D
380} 513}
381 514
382static void 515static void
383save_perl (pTHX_ Coro__State c) 516save_perl (pTHX_ Coro__State c)
384{ 517{
385 assert (!PL_comppad || AvARRAY (PL_comppad));//D
386 { 518 {
387 dSP; 519 dSP;
388 I32 cxix = cxstack_ix; 520 I32 cxix = cxstack_ix;
389 PERL_CONTEXT *ccstk = cxstack; 521 PERL_CONTEXT *ccstk = cxstack;
390 PERL_SI *top_si = PL_curstackinfo; 522 PERL_SI *top_si = PL_curstackinfo;
… …
392 /* 524 /*
393 * the worst thing you can imagine happens first - we have to save 525 * the worst thing you can imagine happens first - we have to save
394 * (and reinitialize) all cv's in the whole callchain :( 526 * (and reinitialize) all cv's in the whole callchain :(
395 */ 527 */
396 528
397 EXTEND (SP, 3 + 1);
398 PUSHs (Nullsv); 529 XPUSHs (Nullsv);
399 /* this loop was inspired by pp_caller */ 530 /* this loop was inspired by pp_caller */
400 for (;;) 531 for (;;)
401 { 532 {
402 while (cxix >= 0) 533 while (expect_true (cxix >= 0))
403 { 534 {
404 PERL_CONTEXT *cx = &ccstk[cxix--]; 535 PERL_CONTEXT *cx = &ccstk[cxix--];
405 536
406 if (CxTYPE (cx) == CXt_SUB) 537 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407 { 538 {
408 CV *cv = cx->blk_sub.cv; 539 CV *cv = cx->blk_sub.cv;
409 540
410 if (CvDEPTH (cv)) 541 if (expect_true (CvDEPTH (cv)))
411 { 542 {
412 EXTEND (SP, 3); 543 EXTEND (SP, 3);
413 PUSHs ((SV *)CvPADLIST (cv)); 544 PUSHs ((SV *)CvPADLIST (cv));
414 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 545 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
415 PUSHs ((SV *)cv); 546 PUSHs ((SV *)cv);
416 547
417 CvDEPTH (cv) = 0; 548 CvDEPTH (cv) = 0;
418 get_padlist (aTHX_ cv); 549 get_padlist (aTHX_ cv);
419 } 550 }
420 } 551 }
421 } 552 }
422 553
423 if (top_si->si_type == PERLSI_MAIN) 554 if (expect_true (top_si->si_type == PERLSI_MAIN))
424 break; 555 break;
425 556
426 top_si = top_si->si_prev; 557 top_si = top_si->si_prev;
427 ccstk = top_si->si_cxstack; 558 ccstk = top_si->si_cxstack;
428 cxix = top_si->si_cxix; 559 cxix = top_si->si_cxix;
429 } 560 }
430 561
431 PUTBACK; 562 PUTBACK;
432 } 563 }
433 564
434 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 565 /* allocate some space on the context stack for our purposes */
435 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 566 /* we manually unroll here, as usually 2 slots is enough */
436 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 567 if (SLOT_COUNT >= 1) CXINC;
437 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 568 if (SLOT_COUNT >= 2) CXINC;
438 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 569 if (SLOT_COUNT >= 3) CXINC;
570 {
571 int i;
572 for (i = 3; i < SLOT_COUNT; ++i)
573 CXINC;
574 }
575 cxstack_ix -= SLOT_COUNT; /* undo allocation */
439 576
577 c->mainstack = PL_mainstack;
578
579 {
580 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
581
582 slot->defav = GvAV (PL_defgv);
583 slot->defsv = DEFSV;
584 slot->errsv = ERRSV;
585 slot->irsgv = GvSV (irsgv);
586
440#define VAR(name,type)c->name = PL_ ## name; 587 #define VAR(name,type) slot->name = PL_ ## name;
441# include "state.h" 588 # include "state.h"
442#undef VAR 589 #undef VAR
590 }
443} 591}
444 592
445/* 593/*
446 * allocate various perl stacks. This is an exact copy 594 * allocate various perl stacks. This is an exact copy
447 * of perl.c:init_stacks, except that it uses less memory 595 * of perl.c:init_stacks, except that it uses less memory
… …
452# define coro_init_stacks init_stacks 600# define coro_init_stacks init_stacks
453#else 601#else
454static void 602static void
455coro_init_stacks (pTHX) 603coro_init_stacks (pTHX)
456{ 604{
457 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 605 PL_curstackinfo = new_stackinfo(32, 8);
458 PL_curstackinfo->si_type = PERLSI_MAIN; 606 PL_curstackinfo->si_type = PERLSI_MAIN;
459 PL_curstack = PL_curstackinfo->si_stack; 607 PL_curstack = PL_curstackinfo->si_stack;
460 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 608 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461 609
462 PL_stack_base = AvARRAY(PL_curstack); 610 PL_stack_base = AvARRAY(PL_curstack);
463 PL_stack_sp = PL_stack_base; 611 PL_stack_sp = PL_stack_base;
464 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 612 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465 613
466 New(50,PL_tmps_stack,128,SV*); 614 New(50,PL_tmps_stack,32,SV*);
467 PL_tmps_floor = -1; 615 PL_tmps_floor = -1;
468 PL_tmps_ix = -1; 616 PL_tmps_ix = -1;
469 PL_tmps_max = 128; 617 PL_tmps_max = 32;
470 618
471 New(54,PL_markstack,32,I32); 619 New(54,PL_markstack,16,I32);
472 PL_markstack_ptr = PL_markstack; 620 PL_markstack_ptr = PL_markstack;
473 PL_markstack_max = PL_markstack + 32; 621 PL_markstack_max = PL_markstack + 16;
474 622
475#ifdef SET_MARK_OFFSET 623#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 624 SET_MARK_OFFSET;
477#endif 625#endif
478 626
479 New(54,PL_scopestack,32,I32); 627 New(54,PL_scopestack,8,I32);
480 PL_scopestack_ix = 0; 628 PL_scopestack_ix = 0;
481 PL_scopestack_max = 32; 629 PL_scopestack_max = 8;
482 630
483 New(54,PL_savestack,64,ANY); 631 New(54,PL_savestack,24,ANY);
484 PL_savestack_ix = 0; 632 PL_savestack_ix = 0;
485 PL_savestack_max = 64; 633 PL_savestack_max = 24;
486 634
487#if !PERL_VERSION_ATLEAST (5,9,0) 635#if !PERL_VERSION_ATLEAST (5,10,0)
488 New(54,PL_retstack,16,OP*); 636 New(54,PL_retstack,4,OP*);
489 PL_retstack_ix = 0; 637 PL_retstack_ix = 0;
490 PL_retstack_max = 16; 638 PL_retstack_max = 4;
491#endif 639#endif
492} 640}
493#endif 641#endif
494 642
495/* 643/*
496 * destroy the stacks, the callchain etc... 644 * destroy the stacks, the callchain etc...
497 */ 645 */
498static void 646static void
499coro_destroy_stacks (pTHX) 647coro_destruct_stacks (pTHX)
500{ 648{
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) 649 while (PL_curstackinfo->si_next)
519 PL_curstackinfo = PL_curstackinfo->si_next; 650 PL_curstackinfo = PL_curstackinfo->si_next;
520 651
521 while (PL_curstackinfo) 652 while (PL_curstackinfo)
522 { 653 {
… …
532 663
533 Safefree (PL_tmps_stack); 664 Safefree (PL_tmps_stack);
534 Safefree (PL_markstack); 665 Safefree (PL_markstack);
535 Safefree (PL_scopestack); 666 Safefree (PL_scopestack);
536 Safefree (PL_savestack); 667 Safefree (PL_savestack);
537#if !PERL_VERSION_ATLEAST (5,9,0) 668#if !PERL_VERSION_ATLEAST (5,10,0)
538 Safefree (PL_retstack); 669 Safefree (PL_retstack);
539#endif 670#endif
540} 671}
541 672
673static size_t
674coro_rss (pTHX_ struct coro *coro)
675{
676 size_t rss = sizeof (*coro);
677
678 if (coro->mainstack)
679 {
680 perl_slots tmp_slot;
681 perl_slots *slot;
682
683 if (coro->flags & CF_RUNNING)
684 {
685 slot = &tmp_slot;
686
687 #define VAR(name,type) slot->name = PL_ ## name;
688 # include "state.h"
689 #undef VAR
690 }
691 else
692 slot = coro->slot;
693
694 if (slot)
695 {
696 rss += sizeof (slot->curstackinfo);
697 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
698 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
699 rss += slot->tmps_max * sizeof (SV *);
700 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
701 rss += slot->scopestack_max * sizeof (I32);
702 rss += slot->savestack_max * sizeof (ANY);
703
704#if !PERL_VERSION_ATLEAST (5,10,0)
705 rss += slot->retstack_max * sizeof (OP *);
706#endif
707 }
708 }
709
710 return rss;
711}
712
542/** coroutine stack handling ************************************************/ 713/** coroutine stack handling ************************************************/
543 714
715static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
716static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
717static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
718
719/* apparently < 5.8.8 */
720#ifndef MgPV_nolen_const
721#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
722 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
723 (const char*)(mg)->mg_ptr)
724#endif
725
726/*
727 * This overrides the default magic get method of %SIG elements.
728 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
729 * and instead of tryign to save and restore the hash elements, we just provide
730 * readback here.
731 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
732 * not expecting this to actually change the hook. This is a potential problem
733 * when a schedule happens then, but we ignore this.
734 */
735static int
736coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
737{
738 const char *s = MgPV_nolen_const (mg);
739
740 if (*s == '_')
741 {
742 SV **svp = 0;
743
744 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
745 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
746
747 if (svp)
748 {
749 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
750 return 0;
751 }
752 }
753
754 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
755}
756
757static int
758coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
759{
760 const char *s = MgPV_nolen_const (mg);
761
762 if (*s == '_')
763 {
764 SV **svp = 0;
765
766 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
767 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
768
769 if (svp)
770 {
771 SV *old = *svp;
772 *svp = 0;
773 SvREFCNT_dec (old);
774 return 0;
775 }
776 }
777
778 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
779}
780
781static int
782coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
783{
784 const char *s = MgPV_nolen_const (mg);
785
786 if (*s == '_')
787 {
788 SV **svp = 0;
789
790 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
791 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
792
793 if (svp)
794 {
795 SV *old = *svp;
796 *svp = newSVsv (sv);
797 SvREFCNT_dec (old);
798 return 0;
799 }
800 }
801
802 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
803}
804
544static void 805static void
545setup_coro (pTHX_ struct coro *coro) 806coro_setup (pTHX_ struct coro *coro)
546{ 807{
547 /* 808 /*
548 * emulate part of the perl startup here. 809 * emulate part of the perl startup here.
549 */ 810 */
550 coro_init_stacks (aTHX); 811 coro_init_stacks (aTHX);
551 812
813 PL_runops = RUNOPS_DEFAULT;
552 PL_curcop = &PL_compiling; 814 PL_curcop = &PL_compiling;
553 PL_in_eval = EVAL_NULL; 815 PL_in_eval = EVAL_NULL;
554 PL_comppad = 0; 816 PL_comppad = 0;
555 PL_curpm = 0; 817 PL_curpm = 0;
818 PL_curpad = 0;
556 PL_localizing = 0; 819 PL_localizing = 0;
557 PL_dirty = 0; 820 PL_dirty = 0;
558 PL_restartop = 0; 821 PL_restartop = 0;
822#if PERL_VERSION_ATLEAST (5,10,0)
823 PL_parser = 0;
824#endif
825
826 /* recreate the die/warn hooks */
827 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
828 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
829
830 GvSV (PL_defgv) = newSV (0);
831 GvAV (PL_defgv) = coro->args; coro->args = 0;
832 GvSV (PL_errgv) = newSV (0);
833 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
834 PL_rs = newSVsv (GvSV (irsgv));
835 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
559 836
560 { 837 {
561 dSP; 838 dSP;
562 LOGOP myop; 839 LOGOP myop;
563 840
564 SvREFCNT_dec (GvAV (PL_defgv));
565 GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567 Zero (&myop, 1, LOGOP); 841 Zero (&myop, 1, LOGOP);
568 myop.op_next = Nullop; 842 myop.op_next = Nullop;
569 myop.op_flags = OPf_WANT_VOID; 843 myop.op_flags = OPf_WANT_VOID;
570 844
571 PUSHMARK (SP); 845 PUSHMARK (SP);
572 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573 PUTBACK; 847 PUTBACK;
574 PL_op = (OP *)&myop; 848 PL_op = (OP *)&myop;
575 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576 SPAGAIN; 850 SPAGAIN;
577 } 851 }
578 852
579 ENTER; /* necessary e.g. for dounwind */ 853 /* this newly created coroutine might be run on an existing cctx which most
854 * likely was suspended in set_stacklevel, called from entersub.
855 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
856 * so we ENTER here for symmetry
857 */
858 ENTER;
859}
860
861static void
862coro_destruct (pTHX_ struct coro *coro)
863{
864 if (!IN_DESTRUCT)
865 {
866 /* restore all saved variables and stuff */
867 LEAVE_SCOPE (0);
868 assert (PL_tmps_floor == -1);
869
870 /* free all temporaries */
871 FREETMPS;
872 assert (PL_tmps_ix == -1);
873
874 /* unwind all extra stacks */
875 POPSTACK_TO (PL_mainstack);
876
877 /* unwind main stack */
878 dounwind (-1);
879 }
880
881 SvREFCNT_dec (GvSV (PL_defgv));
882 SvREFCNT_dec (GvAV (PL_defgv));
883 SvREFCNT_dec (GvSV (PL_errgv));
884 SvREFCNT_dec (PL_defoutgv);
885 SvREFCNT_dec (PL_rs);
886 SvREFCNT_dec (GvSV (irsgv));
887
888 SvREFCNT_dec (PL_diehook);
889 SvREFCNT_dec (PL_warnhook);
890
891 SvREFCNT_dec (coro->saved_deffh);
892 SvREFCNT_dec (coro->throw);
893
894 coro_destruct_stacks (aTHX);
580} 895}
581 896
582static void 897static void
583free_coro_mortal (pTHX) 898free_coro_mortal (pTHX)
584{ 899{
585 if (coro_mortal) 900 if (expect_true (coro_mortal))
586 { 901 {
587 SvREFCNT_dec (coro_mortal); 902 SvREFCNT_dec (coro_mortal);
588 coro_mortal = 0; 903 coro_mortal = 0;
589 } 904 }
590} 905}
591 906
907static int
908runops_trace (pTHX)
909{
910 COP *oldcop = 0;
911 int oldcxix = -2;
912 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
913 coro_cctx *cctx = coro->cctx;
914
915 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
916 {
917 PERL_ASYNC_CHECK ();
918
919 if (cctx->flags & CC_TRACE_ALL)
920 {
921 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
922 {
923 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
924 SV **bot, **top;
925 AV *av = newAV (); /* return values */
926 SV **cb;
927 dSP;
928
929 GV *gv = CvGV (cx->blk_sub.cv);
930 SV *fullname = sv_2mortal (newSV (0));
931 if (isGV (gv))
932 gv_efullname3 (fullname, gv, 0);
933
934 bot = PL_stack_base + cx->blk_oldsp + 1;
935 top = cx->blk_gimme == G_ARRAY ? SP + 1
936 : cx->blk_gimme == G_SCALAR ? bot + 1
937 : bot;
938
939 av_extend (av, top - bot);
940 while (bot < top)
941 av_push (av, SvREFCNT_inc_NN (*bot++));
942
943 PL_runops = RUNOPS_DEFAULT;
944 ENTER;
945 SAVETMPS;
946 EXTEND (SP, 3);
947 PUSHMARK (SP);
948 PUSHs (&PL_sv_no);
949 PUSHs (fullname);
950 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
951 PUTBACK;
952 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
953 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
954 SPAGAIN;
955 FREETMPS;
956 LEAVE;
957 PL_runops = runops_trace;
958 }
959
960 if (oldcop != PL_curcop)
961 {
962 oldcop = PL_curcop;
963
964 if (PL_curcop != &PL_compiling)
965 {
966 SV **cb;
967
968 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
969 {
970 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
971
972 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
973 {
974 runops_proc_t old_runops = PL_runops;
975 dSP;
976 GV *gv = CvGV (cx->blk_sub.cv);
977 SV *fullname = sv_2mortal (newSV (0));
978
979 if (isGV (gv))
980 gv_efullname3 (fullname, gv, 0);
981
982 PL_runops = RUNOPS_DEFAULT;
983 ENTER;
984 SAVETMPS;
985 EXTEND (SP, 3);
986 PUSHMARK (SP);
987 PUSHs (&PL_sv_yes);
988 PUSHs (fullname);
989 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
990 PUTBACK;
991 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
992 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
993 SPAGAIN;
994 FREETMPS;
995 LEAVE;
996 PL_runops = runops_trace;
997 }
998
999 oldcxix = cxstack_ix;
1000 }
1001
1002 if (cctx->flags & CC_TRACE_LINE)
1003 {
1004 dSP;
1005
1006 PL_runops = RUNOPS_DEFAULT;
1007 ENTER;
1008 SAVETMPS;
1009 EXTEND (SP, 3);
1010 PL_runops = RUNOPS_DEFAULT;
1011 PUSHMARK (SP);
1012 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1013 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1014 PUTBACK;
1015 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1016 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1017 SPAGAIN;
1018 FREETMPS;
1019 LEAVE;
1020 PL_runops = runops_trace;
1021 }
1022 }
1023 }
1024 }
1025 }
1026
1027 TAINT_NOT;
1028 return 0;
1029}
1030
592/* inject a fake call to Coro::State::_cctx_init into the execution */ 1031/* 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 */ 1032/* _cctx_init should be careful, as it could be called at almost any time */
594/* during execution of a pelr program */ 1033/* during execution of a perl program */
595static void NOINLINE 1034static void NOINLINE
596prepare_cctx (pTHX_ coro_cctx *cctx) 1035cctx_prepare (pTHX_ coro_cctx *cctx)
597{ 1036{
598 dSP; 1037 dSP;
599 LOGOP myop; 1038 LOGOP myop;
1039
1040 PL_top_env = &PL_start_env;
1041
1042 if (cctx->flags & CC_TRACE)
1043 PL_runops = runops_trace;
600 1044
601 Zero (&myop, 1, LOGOP); 1045 Zero (&myop, 1, LOGOP);
602 myop.op_next = PL_op; 1046 myop.op_next = PL_op;
603 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604 1048
… …
614 1058
615/* 1059/*
616 * this is a _very_ stripped down perl interpreter ;) 1060 * this is a _very_ stripped down perl interpreter ;)
617 */ 1061 */
618static void 1062static void
619coro_run (void *arg) 1063cctx_run (void *arg)
620{ 1064{
1065#ifdef USE_ITHREADS
1066# if CORO_PTHREAD
1067 PERL_SET_CONTEXT (coro_thx);
1068# endif
1069#endif
1070 {
621 dTHX; 1071 dTHX;
622 1072
623 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1073 /* cctx_run is the alternative tail of transfer(), so unlock here. */
624 UNLOCK; 1074 UNLOCK;
625 1075
626 PL_top_env = &PL_start_env; 1076 /* we now skip the entersub that lead to transfer() */
1077 PL_op = PL_op->op_next;
627 1078
628 /* inject a fake subroutine call to cctx_init */ 1079 /* inject a fake subroutine call to cctx_init */
629 prepare_cctx (aTHX_ (coro_cctx *)arg); 1080 cctx_prepare (aTHX_ (coro_cctx *)arg);
630 1081
631 /* somebody or something will hit me for both perl_run and PL_restartop */ 1082 /* somebody or something will hit me for both perl_run and PL_restartop */
632 PL_restartop = PL_op; 1083 PL_restartop = PL_op;
633 perl_run (PL_curinterp); 1084 perl_run (PL_curinterp);
634 1085
1086 /*
635 /* If perl-run returns we assume exit() was being called, which */ 1087 * If perl-run returns we assume exit() was being called or the coro
636 /* seems to be the only valid (non-bug) reason for perl_run to return. */ 1088 * fell off the end, which seems to be the only valid (non-bug)
637 /* We try to exit by jumping to the bootstrap-time "top" top_env, as */ 1089 * reason for perl_run to return. We try to exit by jumping to the
638 /* we cannot restore the "main" coroutine as Coro has no such concept */ 1090 * bootstrap-time "top" top_env, as we cannot restore the "main"
1091 * coroutine as Coro has no such concept
1092 */
639 PL_top_env = main_top_env; 1093 PL_top_env = main_top_env;
640 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1094 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1095 }
641} 1096}
642 1097
643static coro_cctx * 1098static coro_cctx *
644cctx_new () 1099cctx_new ()
645{ 1100{
646 coro_cctx *cctx; 1101 coro_cctx *cctx;
1102
1103 ++cctx_count;
1104 New (0, cctx, 1, coro_cctx);
1105
1106 cctx->gen = cctx_gen;
1107 cctx->flags = 0;
1108
1109 return cctx;
1110}
1111
1112/* create a new cctx only suitable as source */
1113static coro_cctx *
1114cctx_new_empty ()
1115{
1116 coro_cctx *cctx = cctx_new ();
1117
1118 cctx->sptr = 0;
1119 cctx->idle_sp = 0; /* should never be a valid address */
1120 coro_create (&cctx->cctx, 0, 0, 0, 0);
1121
1122 return cctx;
1123}
1124
1125/* create a new cctx suitable as destination/running a perl interpreter */
1126static coro_cctx *
1127cctx_new_run ()
1128{
1129 coro_cctx *cctx = cctx_new ();
647 void *stack_start; 1130 void *stack_start;
648 size_t stack_size; 1131 size_t stack_size;
649 1132
650 ++cctx_count;
651
652 Newz (0, cctx, 1, coro_cctx);
653
654#if HAVE_MMAP 1133#if HAVE_MMAP
655
656 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1134 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657 /* mmap supposedly does allocate-on-write for us */ 1135 /* mmap supposedly does allocate-on-write for us */
658 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1136 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
659 1137
660 if (cctx->sptr != (void *)-1) 1138 if (cctx->sptr != (void *)-1)
661 { 1139 {
662# if CORO_STACKGUARD 1140# if CORO_STACKGUARD
663 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1141 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
664# endif 1142# endif
665 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1143 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
666 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1144 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
667 cctx->mapped = 1; 1145 cctx->flags |= CC_MAPPED;
668 } 1146 }
669 else 1147 else
670#endif 1148#endif
671 { 1149 {
672 cctx->ssize = coro_stacksize * (long)sizeof (long); 1150 cctx->ssize = cctx_stacksize * (long)sizeof (long);
673 New (0, cctx->sptr, coro_stacksize, long); 1151 New (0, cctx->sptr, cctx_stacksize, long);
674 1152
675 if (!cctx->sptr) 1153 if (!cctx->sptr)
676 { 1154 {
677 perror ("FATAL: unable to allocate stack for coroutine"); 1155 perror ("FATAL: unable to allocate stack for coroutine");
678 _exit (EXIT_FAILURE); 1156 _exit (EXIT_FAILURE);
… …
681 stack_start = cctx->sptr; 1159 stack_start = cctx->sptr;
682 stack_size = cctx->ssize; 1160 stack_size = cctx->ssize;
683 } 1161 }
684 1162
685 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1163 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
686 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1164 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
687 1165
688 return cctx; 1166 return cctx;
689} 1167}
690 1168
691static void 1169static void
… …
693{ 1171{
694 if (!cctx) 1172 if (!cctx)
695 return; 1173 return;
696 1174
697 --cctx_count; 1175 --cctx_count;
1176 coro_destroy (&cctx->cctx);
698 1177
1178 /* coro_transfer creates new, empty cctx's */
1179 if (cctx->sptr)
1180 {
699#if CORO_USE_VALGRIND 1181#if CORO_USE_VALGRIND
700 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1182 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
701#endif 1183#endif
702 1184
703#if HAVE_MMAP 1185#if HAVE_MMAP
704 if (cctx->mapped) 1186 if (cctx->flags & CC_MAPPED)
705 munmap (cctx->sptr, cctx->ssize); 1187 munmap (cctx->sptr, cctx->ssize);
706 else 1188 else
707#endif 1189#endif
708 Safefree (cctx->sptr); 1190 Safefree (cctx->sptr);
1191 }
709 1192
710 Safefree (cctx); 1193 Safefree (cctx);
711} 1194}
1195
1196/* wether this cctx should be destructed */
1197#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
712 1198
713static coro_cctx * 1199static coro_cctx *
714cctx_get (pTHX) 1200cctx_get (pTHX)
715{ 1201{
716 while (cctx_first) 1202 while (expect_true (cctx_first))
717 { 1203 {
718 coro_cctx *cctx = cctx_first; 1204 coro_cctx *cctx = cctx_first;
719 cctx_first = cctx->next; 1205 cctx_first = cctx->next;
720 --cctx_idle; 1206 --cctx_idle;
721 1207
722 if (cctx->ssize >= coro_stacksize) 1208 if (expect_true (!CCTX_EXPIRED (cctx)))
723 return cctx; 1209 return cctx;
724 1210
725 cctx_destroy (cctx); 1211 cctx_destroy (cctx);
726 } 1212 }
727 1213
728 PL_op = PL_op->op_next;
729 return cctx_new (); 1214 return cctx_new_run ();
730} 1215}
731 1216
732static void 1217static void
733cctx_put (coro_cctx *cctx) 1218cctx_put (coro_cctx *cctx)
734{ 1219{
1220 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1221
735 /* free another cctx if overlimit */ 1222 /* free another cctx if overlimit */
736 if (cctx_idle >= MAX_IDLE_CCTX) 1223 if (expect_false (cctx_idle >= cctx_max_idle))
737 { 1224 {
738 coro_cctx *first = cctx_first; 1225 coro_cctx *first = cctx_first;
739 cctx_first = first->next; 1226 cctx_first = first->next;
740 --cctx_idle; 1227 --cctx_idle;
741 1228
742 assert (!first->inuse);
743 cctx_destroy (first); 1229 cctx_destroy (first);
744 } 1230 }
745 1231
746 ++cctx_idle; 1232 ++cctx_idle;
747 cctx->next = cctx_first; 1233 cctx->next = cctx_first;
748 cctx_first = cctx; 1234 cctx_first = cctx;
749} 1235}
750 1236
751/** coroutine switching *****************************************************/ 1237/** coroutine switching *****************************************************/
752 1238
753/* never call directly, always through the coro_state_transfer global variable */ 1239static void
1240transfer_check (pTHX_ struct coro *prev, struct coro *next)
1241{
1242 if (expect_true (prev != next))
1243 {
1244 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1245 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1246
1247 if (expect_false (next->flags & CF_RUNNING))
1248 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1249
1250 if (expect_false (next->flags & CF_DESTROYED))
1251 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1252
1253#if !PERL_VERSION_ATLEAST (5,10,0)
1254 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1255 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1256#endif
1257 }
1258}
1259
1260/* always use the TRANSFER macro */
754static void NOINLINE 1261static void NOINLINE
755transfer (pTHX_ struct coro *prev, struct coro *next) 1262transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
756{ 1263{
757 dSTACKLEVEL; 1264 dSTACKLEVEL;
758 1265
759 /* sometimes transfer is only called to set idle_sp */ 1266 /* sometimes transfer is only called to set idle_sp */
760 if (!next) 1267 if (expect_false (!next))
761 { 1268 {
762 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1269 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
763 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1270 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
764 } 1271 }
765 else if (prev != next) 1272 else if (expect_true (prev != next))
766 { 1273 {
1274 static volatile int has_throw;
767 coro_cctx *prev__cctx; 1275 coro_cctx *prev__cctx;
768 1276
769 if (prev->flags & CF_NEW) 1277 if (expect_false (prev->flags & CF_NEW))
770 { 1278 {
771 /* create a new empty context */ 1279 /* create a new empty/source context */
772 Newz (0, prev->cctx, 1, coro_cctx); 1280 prev->cctx = cctx_new_empty ();
773 prev->cctx->inuse = 1;
774 prev->flags &= ~CF_NEW; 1281 prev->flags &= ~CF_NEW;
775 prev->flags |= CF_RUNNING; 1282 prev->flags |= CF_RUNNING;
776 } 1283 }
777 1284
778 /*TODO: must not croak here */
779 if (!prev->flags & CF_RUNNING)
780 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
781
782 if (next->flags & CF_RUNNING)
783 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
784
785 if (next->flags & CF_DESTROYED)
786 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
787
788 prev->flags &= ~CF_RUNNING; 1285 prev->flags &= ~CF_RUNNING;
789 next->flags |= CF_RUNNING; 1286 next->flags |= CF_RUNNING;
790 1287
791 LOCK; 1288 LOCK;
792 1289
1290 /* first get rid of the old state */
1291 save_perl (aTHX_ prev);
1292
793 if (next->flags & CF_NEW) 1293 if (expect_false (next->flags & CF_NEW))
794 { 1294 {
795 /* need to start coroutine */ 1295 /* need to start coroutine */
796 next->flags &= ~CF_NEW; 1296 next->flags &= ~CF_NEW;
797 /* first get rid of the old state */
798 save_perl (aTHX_ prev);
799 /* setup coroutine call */ 1297 /* setup coroutine call */
800 setup_coro (aTHX_ next); 1298 coro_setup (aTHX_ next);
801 /* need a new stack */
802 assert (!next->cctx);
803 } 1299 }
804 else 1300 else
805 {
806 /* coroutine already started */
807 save_perl (aTHX_ prev);
808 load_perl (aTHX_ next); 1301 load_perl (aTHX_ next);
809 }
810 1302
811 prev__cctx = prev->cctx; 1303 prev__cctx = prev->cctx;
812 1304
813 /* possibly "free" the cctx */ 1305 /* possibly "free" the cctx */
1306 if (expect_true (
814 if (prev__cctx->idle_sp == STACKLEVEL) 1307 prev__cctx->idle_sp == STACKLEVEL
1308 && !(prev__cctx->flags & CC_TRACE)
1309 && !force_cctx
1310 ))
815 { 1311 {
816 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1312 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
817 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1313 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
818 1314
819 prev->cctx = 0; 1315 prev->cctx = 0;
820 1316
1317 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1318 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1319 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1320 if (!next->cctx)
1321 next->cctx = cctx_get (aTHX);
1322
821 cctx_put (prev__cctx); 1323 cctx_put (prev__cctx);
822 prev__cctx->inuse = 0;
823 } 1324 }
824 1325
1326 ++next->usecount;
1327
825 if (!next->cctx) 1328 if (expect_true (!next->cctx))
826 {
827 next->cctx = cctx_get (aTHX); 1329 next->cctx = cctx_get (aTHX);
828 assert (!next->cctx->inuse);
829 next->cctx->inuse = 1;
830 }
831 1330
1331 has_throw = !!next->throw;
1332
832 if (prev__cctx != next->cctx) 1333 if (expect_false (prev__cctx != next->cctx))
833 { 1334 {
834 prev__cctx->top_env = PL_top_env; 1335 prev__cctx->top_env = PL_top_env;
835 PL_top_env = next->cctx->top_env; 1336 PL_top_env = next->cctx->top_env;
836 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1337 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
837 } 1338 }
838 1339
839 free_coro_mortal (aTHX); 1340 free_coro_mortal (aTHX);
840 UNLOCK; 1341 UNLOCK;
1342
1343 if (expect_false (has_throw))
1344 {
1345 struct coro *coro = SvSTATE (coro_current);
1346
1347 if (coro->throw)
1348 {
1349 SV *exception = coro->throw;
1350 coro->throw = 0;
1351 sv_setsv (ERRSV, exception);
1352 croak (0);
1353 }
1354 }
841 } 1355 }
842} 1356}
843 1357
844struct transfer_args 1358struct transfer_args
845{ 1359{
846 struct coro *prev, *next; 1360 struct coro *prev, *next;
847}; 1361};
848 1362
1363#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
849#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1364#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
850 1365
851/** high level stuff ********************************************************/ 1366/** high level stuff ********************************************************/
852 1367
853static int 1368static int
854coro_state_destroy (pTHX_ struct coro *coro) 1369coro_state_destroy (pTHX_ struct coro *coro)
… …
871 1386
872 if (coro->mainstack && coro->mainstack != main_mainstack) 1387 if (coro->mainstack && coro->mainstack != main_mainstack)
873 { 1388 {
874 struct coro temp; 1389 struct coro temp;
875 1390
876 assert (!(coro->flags & CF_RUNNING));
877
878 Zero (&temp, 1, struct coro);
879 temp.save = CORO_SAVE_DEF;
880
881 if (coro->flags & CF_RUNNING) 1391 if (coro->flags & CF_RUNNING)
882 croak ("FATAL: tried to destroy currently running coroutine"); 1392 croak ("FATAL: tried to destroy currently running coroutine");
883 1393
884 save_perl (aTHX_ &temp); 1394 save_perl (aTHX_ &temp);
885 load_perl (aTHX_ coro); 1395 load_perl (aTHX_ coro);
886 1396
887 coro_destroy_stacks (aTHX); 1397 coro_destruct (aTHX_ coro);
888 1398
889 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1399 load_perl (aTHX_ &temp);
890 1400
891 coro->mainstack = 0; 1401 coro->slot = 0;
892 } 1402 }
893 1403
894 cctx_destroy (coro->cctx); 1404 cctx_destroy (coro->cctx);
895 SvREFCNT_dec (coro->args); 1405 SvREFCNT_dec (coro->args);
896 1406
1407 if (coro->next) coro->next->prev = coro->prev;
1408 if (coro->prev) coro->prev->next = coro->next;
1409 if (coro == coro_first) coro_first = coro->next;
1410
897 return 1; 1411 return 1;
898} 1412}
899 1413
900static int 1414static int
901coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1415coro_state_free (pTHX_ SV *sv, MAGIC *mg)
902{ 1416{
903 struct coro *coro = (struct coro *)mg->mg_ptr; 1417 struct coro *coro = (struct coro *)mg->mg_ptr;
904 mg->mg_ptr = 0; 1418 mg->mg_ptr = 0;
1419
1420 coro->hv = 0;
905 1421
906 if (--coro->refcnt < 0) 1422 if (--coro->refcnt < 0)
907 { 1423 {
908 coro_state_destroy (aTHX_ coro); 1424 coro_state_destroy (aTHX_ coro);
909 Safefree (coro); 1425 Safefree (coro);
… …
931#else 1447#else
932# define MGf_DUP 0 1448# define MGf_DUP 0
933#endif 1449#endif
934}; 1450};
935 1451
936static struct coro *
937SvSTATE_ (pTHX_ SV *coro)
938{
939 HV *stash;
940 MAGIC *mg;
941
942 if (SvROK (coro))
943 coro = SvRV (coro);
944
945 stash = SvSTASH (coro);
946 if (stash != coro_stash && stash != coro_state_stash)
947 {
948 /* very slow, but rare, check */
949 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
950 croak ("Coro::State object required");
951 }
952
953 mg = CORO_MAGIC (coro);
954 return (struct coro *)mg->mg_ptr;
955}
956
957#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
958
959static void 1452static void
960prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1453prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
961{ 1454{
962 ta->prev = SvSTATE (prev_sv); 1455 ta->prev = SvSTATE (prev_sv);
963 ta->next = SvSTATE (next_sv); 1456 ta->next = SvSTATE (next_sv);
1457 TRANSFER_CHECK (*ta);
964} 1458}
965 1459
966static void 1460static void
967api_transfer (SV *prev_sv, SV *next_sv) 1461api_transfer (SV *prev_sv, SV *next_sv)
968{ 1462{
969 dTHX; 1463 dTHX;
970 struct transfer_args ta; 1464 struct transfer_args ta;
971 1465
972 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1466 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
973 TRANSFER (ta); 1467 TRANSFER (ta, 1);
974}
975
976static int
977api_save (SV *coro_sv, int new_save)
978{
979 dTHX;
980 struct coro *coro = SvSTATE (coro_sv);
981 int old_save = coro->save;
982
983 if (new_save >= 0)
984 coro->save = new_save;
985
986 return old_save;
987} 1468}
988 1469
989/** Coro ********************************************************************/ 1470/** Coro ********************************************************************/
990 1471
991static void 1472static void
… …
993{ 1474{
994 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1475 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
995} 1476}
996 1477
997static SV * 1478static SV *
998coro_deq (pTHX_ int min_prio) 1479coro_deq (pTHX)
999{ 1480{
1000 int prio = PRIO_MAX - PRIO_MIN; 1481 int prio;
1001 1482
1002 min_prio -= PRIO_MIN;
1003 if (min_prio < 0)
1004 min_prio = 0;
1005
1006 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1483 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1007 if (AvFILLp (coro_ready [prio]) >= 0) 1484 if (AvFILLp (coro_ready [prio]) >= 0)
1008 return av_shift (coro_ready [prio]); 1485 return av_shift (coro_ready [prio]);
1009 1486
1010 return 0; 1487 return 0;
1011} 1488}
… …
1013static int 1490static int
1014api_ready (SV *coro_sv) 1491api_ready (SV *coro_sv)
1015{ 1492{
1016 dTHX; 1493 dTHX;
1017 struct coro *coro; 1494 struct coro *coro;
1495 SV *sv_hook;
1496 void (*xs_hook)(void);
1018 1497
1019 if (SvROK (coro_sv)) 1498 if (SvROK (coro_sv))
1020 coro_sv = SvRV (coro_sv); 1499 coro_sv = SvRV (coro_sv);
1021 1500
1022 coro = SvSTATE (coro_sv); 1501 coro = SvSTATE (coro_sv);
… …
1025 return 0; 1504 return 0;
1026 1505
1027 coro->flags |= CF_READY; 1506 coro->flags |= CF_READY;
1028 1507
1029 LOCK; 1508 LOCK;
1509
1510 sv_hook = coro_nready ? 0 : coro_readyhook;
1511 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1512
1030 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1513 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1031 ++coro_nready; 1514 ++coro_nready;
1515
1032 UNLOCK; 1516 UNLOCK;
1517
1518 if (sv_hook)
1519 {
1520 dSP;
1521
1522 ENTER;
1523 SAVETMPS;
1524
1525 PUSHMARK (SP);
1526 PUTBACK;
1527 call_sv (sv_hook, G_DISCARD);
1528 SPAGAIN;
1529
1530 FREETMPS;
1531 LEAVE;
1532 }
1533
1534 if (xs_hook)
1535 xs_hook ();
1033 1536
1034 return 1; 1537 return 1;
1035} 1538}
1036 1539
1037static int 1540static int
… …
1047 SV *prev_sv, *next_sv; 1550 SV *prev_sv, *next_sv;
1048 1551
1049 for (;;) 1552 for (;;)
1050 { 1553 {
1051 LOCK; 1554 LOCK;
1052 next_sv = coro_deq (aTHX_ PRIO_MIN); 1555 next_sv = coro_deq (aTHX);
1053 1556
1054 /* nothing to schedule: call the idle handler */ 1557 /* nothing to schedule: call the idle handler */
1055 if (!next_sv) 1558 if (expect_false (!next_sv))
1056 { 1559 {
1057 dSP; 1560 dSP;
1058 UNLOCK; 1561 UNLOCK;
1059 1562
1060 ENTER; 1563 ENTER;
1061 SAVETMPS; 1564 SAVETMPS;
1062 1565
1063 PUSHMARK (SP); 1566 PUSHMARK (SP);
1064 PUTBACK; 1567 PUTBACK;
1065 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1066 1570
1067 FREETMPS; 1571 FREETMPS;
1068 LEAVE; 1572 LEAVE;
1069 continue; 1573 continue;
1070 } 1574 }
1071 1575
1072 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE (next_sv);
1073 1577
1074 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1075 if (ta->next->flags & CF_DESTROYED) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1076 { 1580 {
1077 UNLOCK; 1581 UNLOCK;
1078 SvREFCNT_dec (next_sv); 1582 SvREFCNT_dec (next_sv);
1079 /* coro_nready is already taken care of by destroy */ 1583 /* coro_nready is already taken care of by destroy */
1080 continue; 1584 continue;
… …
1085 break; 1589 break;
1086 } 1590 }
1087 1591
1088 /* free this only after the transfer */ 1592 /* free this only after the transfer */
1089 prev_sv = SvRV (coro_current); 1593 prev_sv = SvRV (coro_current);
1090 SvRV_set (coro_current, next_sv);
1091 ta->prev = SvSTATE (prev_sv); 1594 ta->prev = SvSTATE (prev_sv);
1092 1595 TRANSFER_CHECK (*ta);
1093 assert (ta->next->flags & CF_READY); 1596 assert (ta->next->flags & CF_READY);
1094 ta->next->flags &= ~CF_READY; 1597 ta->next->flags &= ~CF_READY;
1598 SvRV_set (coro_current, next_sv);
1095 1599
1096 LOCK; 1600 LOCK;
1097 free_coro_mortal (aTHX); 1601 free_coro_mortal (aTHX);
1098 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1099 UNLOCK; 1603 UNLOCK;
… …
1125{ 1629{
1126 dTHX; 1630 dTHX;
1127 struct transfer_args ta; 1631 struct transfer_args ta;
1128 1632
1129 prepare_schedule (aTHX_ &ta); 1633 prepare_schedule (aTHX_ &ta);
1130 TRANSFER (ta); 1634 TRANSFER (ta, 1);
1131} 1635}
1132 1636
1133static int 1637static int
1134api_cede (void) 1638api_cede (void)
1135{ 1639{
1136 dTHX; 1640 dTHX;
1137 struct transfer_args ta; 1641 struct transfer_args ta;
1138 1642
1139 prepare_cede (aTHX_ &ta); 1643 prepare_cede (aTHX_ &ta);
1140 1644
1141 if (ta.prev != ta.next) 1645 if (expect_true (ta.prev != ta.next))
1142 { 1646 {
1143 TRANSFER (ta); 1647 TRANSFER (ta, 1);
1144 return 1; 1648 return 1;
1145 } 1649 }
1146 else 1650 else
1147 return 0; 1651 return 0;
1148} 1652}
… …
1153 dTHX; 1657 dTHX;
1154 struct transfer_args ta; 1658 struct transfer_args ta;
1155 1659
1156 if (prepare_cede_notself (aTHX_ &ta)) 1660 if (prepare_cede_notself (aTHX_ &ta))
1157 { 1661 {
1158 TRANSFER (ta); 1662 TRANSFER (ta, 1);
1159 return 1; 1663 return 1;
1160 } 1664 }
1161 else 1665 else
1162 return 0; 1666 return 0;
1163} 1667}
1164 1668
1669static void
1670api_trace (SV *coro_sv, int flags)
1671{
1672 dTHX;
1673 struct coro *coro = SvSTATE (coro_sv);
1674
1675 if (flags & CC_TRACE)
1676 {
1677 if (!coro->cctx)
1678 coro->cctx = cctx_new_run ();
1679 else if (!(coro->cctx->flags & CC_TRACE))
1680 croak ("cannot enable tracing on coroutine with custom stack");
1681
1682 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1683 }
1684 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1685 {
1686 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1687
1688 if (coro->flags & CF_RUNNING)
1689 PL_runops = RUNOPS_DEFAULT;
1690 else
1691 coro->slot->runops = RUNOPS_DEFAULT;
1692 }
1693}
1694
1695#if 0
1696static int
1697coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1698{
1699 AV *padlist;
1700 AV *av = (AV *)mg->mg_obj;
1701
1702 abort ();
1703
1704 return 0;
1705}
1706
1707static MGVTBL coro_gensub_vtbl = {
1708 0, 0, 0, 0,
1709 coro_gensub_free
1710};
1711#endif
1712
1713/*****************************************************************************/
1714/* PerlIO::cede */
1715
1716typedef struct
1717{
1718 PerlIOBuf base;
1719 NV next, every;
1720} PerlIOCede;
1721
1722static IV
1723PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726
1727 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1728 self->next = nvtime () + self->every;
1729
1730 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1731}
1732
1733static SV *
1734PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1735{
1736 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1737
1738 return newSVnv (self->every);
1739}
1740
1741static IV
1742PerlIOCede_flush (pTHX_ PerlIO *f)
1743{
1744 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1745 double now = nvtime ();
1746
1747 if (now >= self->next)
1748 {
1749 api_cede ();
1750 self->next = now + self->every;
1751 }
1752
1753 return PerlIOBuf_flush (aTHX_ f);
1754}
1755
1756static PerlIO_funcs PerlIO_cede =
1757{
1758 sizeof(PerlIO_funcs),
1759 "cede",
1760 sizeof(PerlIOCede),
1761 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1762 PerlIOCede_pushed,
1763 PerlIOBuf_popped,
1764 PerlIOBuf_open,
1765 PerlIOBase_binmode,
1766 PerlIOCede_getarg,
1767 PerlIOBase_fileno,
1768 PerlIOBuf_dup,
1769 PerlIOBuf_read,
1770 PerlIOBuf_unread,
1771 PerlIOBuf_write,
1772 PerlIOBuf_seek,
1773 PerlIOBuf_tell,
1774 PerlIOBuf_close,
1775 PerlIOCede_flush,
1776 PerlIOBuf_fill,
1777 PerlIOBase_eof,
1778 PerlIOBase_error,
1779 PerlIOBase_clearerr,
1780 PerlIOBase_setlinebuf,
1781 PerlIOBuf_get_base,
1782 PerlIOBuf_bufsiz,
1783 PerlIOBuf_get_ptr,
1784 PerlIOBuf_get_cnt,
1785 PerlIOBuf_set_ptrcnt,
1786};
1787
1788
1165MODULE = Coro::State PACKAGE = Coro::State 1789MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1166 1790
1167PROTOTYPES: DISABLE 1791PROTOTYPES: DISABLE
1168 1792
1169BOOT: 1793BOOT:
1170{ 1794{
1171#ifdef USE_ITHREADS 1795#ifdef USE_ITHREADS
1172 MUTEX_INIT (&coro_mutex); 1796 MUTEX_INIT (&coro_lock);
1797# if CORO_PTHREAD
1798 coro_thx = PERL_GET_CONTEXT;
1799# endif
1173#endif 1800#endif
1174 BOOT_PAGESIZE; 1801 BOOT_PAGESIZE;
1175 1802
1803 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1804 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1805
1806 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1807 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1808 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1809
1810 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1811 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1812 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1813
1176 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1814 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1177 1815
1178 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1816 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1179 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1817 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1180 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1181 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1182 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1183 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1818 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1184 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1819 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1185 1820
1186 main_mainstack = PL_mainstack; 1821 main_mainstack = PL_mainstack;
1187 main_top_env = PL_top_env; 1822 main_top_env = PL_top_env;
1188 1823
1189 while (main_top_env->je_prev) 1824 while (main_top_env->je_prev)
1190 main_top_env = main_top_env->je_prev; 1825 main_top_env = main_top_env->je_prev;
1191 1826
1192 coroapi.ver = CORO_API_VERSION; 1827 coroapi.ver = CORO_API_VERSION;
1828 coroapi.rev = CORO_API_REVISION;
1193 coroapi.transfer = api_transfer; 1829 coroapi.transfer = api_transfer;
1830
1831 {
1832 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1833
1834 if (!svp) croak ("Time::HiRes is required");
1835 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1836
1837 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1838 }
1194 1839
1195 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1840 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1196} 1841}
1197 1842
1198SV * 1843SV *
1199new (char *klass, ...) 1844new (char *klass, ...)
1200 CODE: 1845 CODE:
1201{ 1846{
1202 struct coro *coro; 1847 struct coro *coro;
1848 MAGIC *mg;
1203 HV *hv; 1849 HV *hv;
1204 int i; 1850 int i;
1205 1851
1206 Newz (0, coro, 1, struct coro); 1852 Newz (0, coro, 1, struct coro);
1207 coro->args = newAV (); 1853 coro->args = newAV ();
1208 coro->save = CORO_SAVE_DEF;
1209 coro->flags = CF_NEW; 1854 coro->flags = CF_NEW;
1210 1855
1856 if (coro_first) coro_first->prev = coro;
1857 coro->next = coro_first;
1858 coro_first = coro;
1859
1211 hv = newHV (); 1860 coro->hv = hv = newHV ();
1212 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1861 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1862 mg->mg_flags |= MGf_DUP;
1213 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1863 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1214 1864
1865 av_extend (coro->args, items - 1);
1215 for (i = 1; i < items; i++) 1866 for (i = 1; i < items; i++)
1216 av_push (coro->args, newSVsv (ST (i))); 1867 av_push (coro->args, newSVsv (ST (i)));
1217} 1868}
1218 OUTPUT: 1869 OUTPUT:
1219 RETVAL 1870 RETVAL
1220 1871
1221int 1872# these not obviously related functions are all rolled into the same xs
1222save (SV *coro, int new_save = -1) 1873# function to increase chances that they all will call transfer with the same
1223 CODE: 1874# stack offset
1224 RETVAL = api_save (coro, new_save);
1225 OUTPUT:
1226 RETVAL
1227
1228int
1229save_also (SV *coro_sv, int save_also)
1230 CODE:
1231{
1232 struct coro *coro = SvSTATE (coro_sv);
1233 RETVAL = coro->save;
1234 coro->save |= save_also;
1235}
1236 OUTPUT:
1237 RETVAL
1238
1239void 1875void
1240_set_stacklevel (...) 1876_set_stacklevel (...)
1241 ALIAS: 1877 ALIAS:
1242 Coro::State::transfer = 1 1878 Coro::State::transfer = 1
1243 Coro::schedule = 2 1879 Coro::schedule = 2
… …
1245 Coro::cede_notself = 4 1881 Coro::cede_notself = 4
1246 CODE: 1882 CODE:
1247{ 1883{
1248 struct transfer_args ta; 1884 struct transfer_args ta;
1249 1885
1886 PUTBACK;
1250 switch (ix) 1887 switch (ix)
1251 { 1888 {
1252 case 0: 1889 case 0:
1253 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1890 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1254 ta.next = 0; 1891 ta.next = 0;
1255 break; 1892 break;
1256 1893
1257 case 1: 1894 case 1:
1258 if (items != 2) 1895 if (items != 2)
1259 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1896 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1260 1897
1261 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1898 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1262 break; 1899 break;
1263 1900
1264 case 2: 1901 case 2:
… …
1273 if (!prepare_cede_notself (aTHX_ &ta)) 1910 if (!prepare_cede_notself (aTHX_ &ta))
1274 XSRETURN_EMPTY; 1911 XSRETURN_EMPTY;
1275 1912
1276 break; 1913 break;
1277 } 1914 }
1915 SPAGAIN;
1278 1916
1279 BARRIER; 1917 BARRIER;
1918 PUTBACK;
1280 TRANSFER (ta); 1919 TRANSFER (ta, 0);
1281 1920 SPAGAIN; /* might be the sp of a different coroutine now */
1282 if (GIMME_V != G_VOID && ta.next != ta.prev) 1921 /* be extra careful not to ever do anything after TRANSFER */
1283 XSRETURN_YES;
1284} 1922}
1285 1923
1286bool 1924bool
1287_destroy (SV *coro_sv) 1925_destroy (SV *coro_sv)
1288 CODE: 1926 CODE:
1289 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 1927 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1290 OUTPUT: 1928 OUTPUT:
1291 RETVAL 1929 RETVAL
1292 1930
1293void 1931void
1294_exit (code) 1932_exit (int code)
1295 int code
1296 PROTOTYPE: $ 1933 PROTOTYPE: $
1297 CODE: 1934 CODE:
1298 _exit (code); 1935 _exit (code);
1299 1936
1300int 1937int
1301cctx_stacksize (int new_stacksize = 0) 1938cctx_stacksize (int new_stacksize = 0)
1302 CODE: 1939 CODE:
1303 RETVAL = coro_stacksize; 1940 RETVAL = cctx_stacksize;
1304 if (new_stacksize) 1941 if (new_stacksize)
1942 {
1305 coro_stacksize = new_stacksize; 1943 cctx_stacksize = new_stacksize;
1944 ++cctx_gen;
1945 }
1946 OUTPUT:
1947 RETVAL
1948
1949int
1950cctx_max_idle (int max_idle = 0)
1951 CODE:
1952 RETVAL = cctx_max_idle;
1953 if (max_idle > 1)
1954 cctx_max_idle = max_idle;
1306 OUTPUT: 1955 OUTPUT:
1307 RETVAL 1956 RETVAL
1308 1957
1309int 1958int
1310cctx_count () 1959cctx_count ()
… …
1318 CODE: 1967 CODE:
1319 RETVAL = cctx_idle; 1968 RETVAL = cctx_idle;
1320 OUTPUT: 1969 OUTPUT:
1321 RETVAL 1970 RETVAL
1322 1971
1972void
1973list ()
1974 PPCODE:
1975{
1976 struct coro *coro;
1977 for (coro = coro_first; coro; coro = coro->next)
1978 if (coro->hv)
1979 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1980}
1981
1982void
1983call (Coro::State coro, SV *coderef)
1984 ALIAS:
1985 eval = 1
1986 CODE:
1987{
1988 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1989 {
1990 struct coro temp;
1991
1992 if (!(coro->flags & CF_RUNNING))
1993 {
1994 PUTBACK;
1995 save_perl (aTHX_ &temp);
1996 load_perl (aTHX_ coro);
1997 }
1998
1999 {
2000 dSP;
2001 ENTER;
2002 SAVETMPS;
2003 PUTBACK;
2004 PUSHSTACK;
2005 PUSHMARK (SP);
2006
2007 if (ix)
2008 eval_sv (coderef, 0);
2009 else
2010 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2011
2012 POPSTACK;
2013 SPAGAIN;
2014 FREETMPS;
2015 LEAVE;
2016 PUTBACK;
2017 }
2018
2019 if (!(coro->flags & CF_RUNNING))
2020 {
2021 save_perl (aTHX_ coro);
2022 load_perl (aTHX_ &temp);
2023 SPAGAIN;
2024 }
2025 }
2026}
2027
2028SV *
2029is_ready (Coro::State coro)
2030 PROTOTYPE: $
2031 ALIAS:
2032 is_ready = CF_READY
2033 is_running = CF_RUNNING
2034 is_new = CF_NEW
2035 is_destroyed = CF_DESTROYED
2036 CODE:
2037 RETVAL = boolSV (coro->flags & ix);
2038 OUTPUT:
2039 RETVAL
2040
2041void
2042api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2043
2044SV *
2045has_cctx (Coro::State coro)
2046 PROTOTYPE: $
2047 CODE:
2048 RETVAL = boolSV (!!coro->cctx);
2049 OUTPUT:
2050 RETVAL
2051
2052int
2053is_traced (Coro::State coro)
2054 PROTOTYPE: $
2055 CODE:
2056 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2057 OUTPUT:
2058 RETVAL
2059
2060UV
2061rss (Coro::State coro)
2062 PROTOTYPE: $
2063 ALIAS:
2064 usecount = 1
2065 CODE:
2066 switch (ix)
2067 {
2068 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2069 case 1: RETVAL = coro->usecount; break;
2070 }
2071 OUTPUT:
2072 RETVAL
2073
2074void
2075force_cctx ()
2076 CODE:
2077 struct coro *coro = SvSTATE (coro_current);
2078 coro->cctx->idle_sp = 0;
2079
2080void
2081swap_defsv (Coro::State self)
2082 PROTOTYPE: $
2083 ALIAS:
2084 swap_defav = 1
2085 CODE:
2086 if (!self->slot)
2087 croak ("cannot swap state with coroutine that has no saved state");
2088 else
2089 {
2090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2092
2093 SV *tmp = *src; *src = *dst; *dst = tmp;
2094 }
2095
1323MODULE = Coro::State PACKAGE = Coro 2096MODULE = Coro::State PACKAGE = Coro
1324 2097
1325BOOT: 2098BOOT:
1326{ 2099{
1327 int i; 2100 int i;
1328 2101
2102 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2105
2106 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2107 SvREADONLY_on (coro_current);
2108
1329 coro_stash = gv_stashpv ("Coro", TRUE); 2109 coro_stash = gv_stashpv ("Coro", TRUE);
1330 2110
1331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2113 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2114 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2115 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2116 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1337 2117
1338 coro_current = get_sv ("Coro::current", FALSE);
1339 SvREADONLY_on (coro_current);
1340
1341 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1342 coro_ready[i] = newAV (); 2119 coro_ready[i] = newAV ();
1343 2120
1344 { 2121 {
1345 SV *sv = perl_get_sv("Coro::API", 1); 2122 SV *sv = perl_get_sv ("Coro::API", TRUE);
2123 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1346 2124
1347 coroapi.schedule = api_schedule; 2125 coroapi.schedule = api_schedule;
1348 coroapi.save = api_save;
1349 coroapi.cede = api_cede; 2126 coroapi.cede = api_cede;
1350 coroapi.cede_notself = api_cede_notself; 2127 coroapi.cede_notself = api_cede_notself;
1351 coroapi.ready = api_ready; 2128 coroapi.ready = api_ready;
1352 coroapi.is_ready = api_is_ready; 2129 coroapi.is_ready = api_is_ready;
1353 coroapi.nready = &coro_nready; 2130 coroapi.nready = &coro_nready;
… …
1362void 2139void
1363_set_current (SV *current) 2140_set_current (SV *current)
1364 PROTOTYPE: $ 2141 PROTOTYPE: $
1365 CODE: 2142 CODE:
1366 SvREFCNT_dec (SvRV (coro_current)); 2143 SvREFCNT_dec (SvRV (coro_current));
1367 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2144 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2145
2146void
2147_set_readyhook (SV *hook)
2148 PROTOTYPE: $
2149 CODE:
2150 LOCK;
2151 SvREFCNT_dec (coro_readyhook);
2152 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2153 UNLOCK;
1368 2154
1369int 2155int
1370prio (Coro::State coro, int newprio = 0) 2156prio (Coro::State coro, int newprio = 0)
1371 ALIAS: 2157 ALIAS:
1372 nice = 1 2158 nice = 1
… …
1394 CODE: 2180 CODE:
1395 RETVAL = boolSV (api_ready (self)); 2181 RETVAL = boolSV (api_ready (self));
1396 OUTPUT: 2182 OUTPUT:
1397 RETVAL 2183 RETVAL
1398 2184
1399SV *
1400is_ready (SV *self)
1401 PROTOTYPE: $
1402 CODE:
1403 RETVAL = boolSV (api_is_ready (self));
1404 OUTPUT:
1405 RETVAL
1406
1407int 2185int
1408nready (...) 2186nready (...)
1409 PROTOTYPE: 2187 PROTOTYPE:
1410 CODE: 2188 CODE:
1411 RETVAL = coro_nready; 2189 RETVAL = coro_nready;
1412 OUTPUT: 2190 OUTPUT:
1413 RETVAL 2191 RETVAL
1414 2192
2193void
2194throw (Coro::State self, SV *throw = &PL_sv_undef)
2195 PROTOTYPE: $;$
2196 CODE:
2197 SvREFCNT_dec (self->throw);
2198 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2199
2200# for async_pool speedup
2201void
2202_pool_1 (SV *cb)
2203 CODE:
2204{
2205 struct coro *coro = SvSTATE (coro_current);
2206 HV *hv = (HV *)SvRV (coro_current);
2207 AV *defav = GvAV (PL_defgv);
2208 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2209 AV *invoke_av;
2210 int i, len;
2211
2212 if (!invoke)
2213 {
2214 SV *old = PL_diehook;
2215 PL_diehook = 0;
2216 SvREFCNT_dec (old);
2217 croak ("\3async_pool terminate\2\n");
2218 }
2219
2220 SvREFCNT_dec (coro->saved_deffh);
2221 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2222
2223 hv_store (hv, "desc", sizeof ("desc") - 1,
2224 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2225
2226 invoke_av = (AV *)SvRV (invoke);
2227 len = av_len (invoke_av);
2228
2229 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2230
2231 if (len > 0)
2232 {
2233 av_fill (defav, len - 1);
2234 for (i = 0; i < len; ++i)
2235 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2236 }
2237
2238 SvREFCNT_dec (invoke);
2239}
2240
2241void
2242_pool_2 (SV *cb)
2243 CODE:
2244{
2245 struct coro *coro = SvSTATE (coro_current);
2246
2247 sv_setsv (cb, &PL_sv_undef);
2248
2249 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2250 coro->saved_deffh = 0;
2251
2252 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2253 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2254 {
2255 SV *old = PL_diehook;
2256 PL_diehook = 0;
2257 SvREFCNT_dec (old);
2258 croak ("\3async_pool terminate\2\n");
2259 }
2260
2261 av_clear (GvAV (PL_defgv));
2262 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2263 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2264
2265 coro->prio = 0;
2266
2267 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2268 api_trace (coro_current, 0);
2269
2270 av_push (av_async_pool, newSVsv (coro_current));
2271}
2272
2273#if 0
2274
2275void
2276_generator_call (...)
2277 PROTOTYPE: @
2278 PPCODE:
2279 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2280 xxxx
2281 abort ();
2282
2283SV *
2284gensub (SV *sub, ...)
2285 PROTOTYPE: &;@
2286 CODE:
2287{
2288 struct coro *coro;
2289 MAGIC *mg;
2290 CV *xcv;
2291 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2292 int i;
2293
2294 CvGV (ncv) = CvGV (cv);
2295 CvFILE (ncv) = CvFILE (cv);
2296
2297 Newz (0, coro, 1, struct coro);
2298 coro->args = newAV ();
2299 coro->flags = CF_NEW;
2300
2301 av_extend (coro->args, items - 1);
2302 for (i = 1; i < items; i++)
2303 av_push (coro->args, newSVsv (ST (i)));
2304
2305 CvISXSUB_on (ncv);
2306 CvXSUBANY (ncv).any_ptr = (void *)coro;
2307
2308 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2309
2310 CvXSUB (ncv) = CvXSUB (xcv);
2311 CvANON_on (ncv);
2312
2313 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2314 RETVAL = newRV_noinc ((SV *)ncv);
2315}
2316 OUTPUT:
2317 RETVAL
2318
2319#endif
2320
2321
1415MODULE = Coro::State PACKAGE = Coro::AIO 2322MODULE = Coro::State PACKAGE = Coro::AIO
1416 2323
1417SV * 2324void
1418_get_state () 2325_get_state (SV *self)
1419 CODE: 2326 PPCODE:
1420{ 2327{
1421 struct io_state *data; 2328 AV *defav = GvAV (PL_defgv);
1422 2329 AV *av = newAV ();
2330 int i;
1423 RETVAL = newSV (sizeof (struct io_state)); 2331 SV *data_sv = newSV (sizeof (struct io_state));
1424 data = (struct io_state *)SvPVX (RETVAL); 2332 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1425 SvCUR_set (RETVAL, sizeof (struct io_state)); 2333 SvCUR_set (data_sv, sizeof (struct io_state));
1426 SvPOK_only (RETVAL); 2334 SvPOK_only (data_sv);
1427 2335
1428 data->errorno = errno; 2336 data->errorno = errno;
1429 data->laststype = PL_laststype; 2337 data->laststype = PL_laststype;
1430 data->laststatval = PL_laststatval; 2338 data->laststatval = PL_laststatval;
1431 data->statcache = PL_statcache; 2339 data->statcache = PL_statcache;
2340
2341 av_extend (av, AvFILLp (defav) + 1 + 1);
2342
2343 for (i = 0; i <= AvFILLp (defav); ++i)
2344 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2345
2346 av_push (av, data_sv);
2347
2348 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2349
2350 api_ready (self);
1432} 2351}
1433 OUTPUT:
1434 RETVAL
1435 2352
1436void 2353void
1437_set_state (char *data_) 2354_set_state (SV *state)
1438 PROTOTYPE: $ 2355 PROTOTYPE: $
1439 CODE: 2356 PPCODE:
1440{ 2357{
1441 struct io_state *data = (void *)data_; 2358 AV *av = (AV *)SvRV (state);
2359 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2360 int i;
1442 2361
1443 errno = data->errorno; 2362 errno = data->errorno;
1444 PL_laststype = data->laststype; 2363 PL_laststype = data->laststype;
1445 PL_laststatval = data->laststatval; 2364 PL_laststatval = data->laststatval;
1446 PL_statcache = data->statcache; 2365 PL_statcache = data->statcache;
1447}
1448 2366
2367 EXTEND (SP, AvFILLp (av));
2368 for (i = 0; i < AvFILLp (av); ++i)
2369 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2370}
2371
2372
2373MODULE = Coro::State PACKAGE = Coro::AnyEvent
2374
2375BOOT:
2376 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2377
2378SV *
2379_schedule (...)
2380 PROTOTYPE: @
2381 CODE:
2382{
2383 static int incede;
2384
2385 api_cede_notself ();
2386
2387 ++incede;
2388 while (coro_nready >= incede && api_cede ())
2389 ;
2390
2391 sv_setsv (sv_activity, &PL_sv_undef);
2392 if (coro_nready >= incede)
2393 {
2394 PUSHMARK (SP);
2395 PUTBACK;
2396 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2397 SPAGAIN;
2398 }
2399
2400 --incede;
2401}
2402
2403
2404MODULE = Coro::State PACKAGE = PerlIO::cede
2405
2406BOOT:
2407 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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