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Comparing Coro/Coro/State.xs (file contents):
Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC vs.
Revision 1.279 by root, Sun Nov 16 08:59:16 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
88/* prefer perl internal functions over our own? */ 114/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 115#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macro should declare a variable stacklevel that contains and approximation 119/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 120 * portable way as possible. */
95 * and should be unique. */ 121#if __GNUC__ >= 4
96#define dSTACKLEVEL int stacklevel 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
97#define STACKLEVEL ((void *)&stacklevel) 123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
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 expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
104#else 133#else
105# define attribute(x) 134# define attribute(x)
106# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
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
188static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook;
191static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */
193
194/* async_pool helper stuff */
195static SV *sv_pool_rss;
196static SV *sv_pool_size;
197static AV *av_async_pool;
198
199/* Coro::AnyEvent */
200static SV *sv_activity;
137 201
138static struct coro_cctx *cctx_first; 202static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 203static int cctx_count, cctx_idle;
140 204
205enum {
206 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */
211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
212};
213
141/* this is a structure representing a c-level coroutine */ 214/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 215typedef struct coro_cctx
216{
143 struct coro_cctx *next; 217 struct coro_cctx *next;
144 218
145 /* the stack */ 219 /* the stack */
146 void *sptr; 220 void *sptr;
147 size_t ssize; 221 size_t ssize;
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 224 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 */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 226 JMPENV *top_env;
153 coro_context cctx; 227 coro_context cctx;
154 228
229 U32 gen;
155#if CORO_USE_VALGRIND 230#if CORO_USE_VALGRIND
156 int valgrind_id; 231 int valgrind_id;
157#endif 232#endif
158 char inuse, mapped; 233 unsigned char flags;
159} coro_cctx; 234} coro_cctx;
160 235
161enum { 236enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 237 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 238 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 239 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 241};
167 242
168/* this is a structure representing a perl-level coroutine */ 243/* the structure where most of the perl state is stored, overlaid on the cxstack */
169struct coro { 244typedef struct
170 /* the c coroutine allocated to this perl coroutine, if any */ 245{
171 coro_cctx *cctx; 246 SV *defsv;
172 247 AV *defav;
173 /* data associated with this coroutine (initial args) */ 248 SV *errsv;
174 AV *args; 249 SV *irsgv;
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */
178
179 /* optionally saved, might be zero */
180 AV *defav; /* @_ */
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; 250#define VAR(name,type) type name;
188# include "state.h" 251# include "state.h"
189#undef VAR 252#undef VAR
253} perl_slots;
254
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256
257/* this is a structure representing a perl-level coroutine */
258struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx;
261
262 /* process data */
263 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */
266
267 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */
271
272 /* statistics */
273 int usecount; /* number of transfers to this coro */
190 274
191 /* coro process data */ 275 /* coro process data */
192 int prio; 276 int prio;
277 SV *throw; /* exception to be thrown */
278
279 /* async_pool */
280 SV *saved_deffh;
193 281
194 /* linked list */ 282 /* linked list */
195 struct coro *next, *prev; 283 struct coro *next, *prev;
196 HV *hv; /* the perl hash associated with this coro, if any */
197}; 284};
198 285
199typedef struct coro *Coro__State; 286typedef struct coro *Coro__State;
200typedef struct coro *Coro__State_or_hashref; 287typedef struct coro *Coro__State_or_hashref;
288
289static struct CoroSLF slf_frame; /* the current slf frame */
201 290
202/** Coro ********************************************************************/ 291/** Coro ********************************************************************/
203 292
204#define PRIO_MAX 3 293#define PRIO_MAX 3
205#define PRIO_HIGH 1 294#define PRIO_HIGH 1
… …
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;
215static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
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
418INLINE 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 *******************************************************/
337 486
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
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 }
381 516
382 PUTBACK; 517 PUTBACK;
383 } 518 }
519
520 slf_frame = c->slf_frame;
384} 521}
385 522
386static void 523static void
387save_perl (pTHX_ Coro__State c) 524save_perl (pTHX_ Coro__State c)
388{ 525{
526 c->slf_frame = slf_frame;
527
389 { 528 {
390 dSP; 529 dSP;
391 I32 cxix = cxstack_ix; 530 I32 cxix = cxstack_ix;
392 PERL_CONTEXT *ccstk = cxstack; 531 PERL_CONTEXT *ccstk = cxstack;
393 PERL_SI *top_si = PL_curstackinfo; 532 PERL_SI *top_si = PL_curstackinfo;
… …
395 /* 534 /*
396 * the worst thing you can imagine happens first - we have to save 535 * the worst thing you can imagine happens first - we have to save
397 * (and reinitialize) all cv's in the whole callchain :( 536 * (and reinitialize) all cv's in the whole callchain :(
398 */ 537 */
399 538
400 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 539 XPUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 540 /* this loop was inspired by pp_caller */
403 for (;;) 541 for (;;)
404 { 542 {
405 while (cxix >= 0) 543 while (expect_true (cxix >= 0))
406 { 544 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 545 PERL_CONTEXT *cx = &ccstk[cxix--];
408 546
409 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410 { 548 {
411 CV *cv = cx->blk_sub.cv; 549 CV *cv = cx->blk_sub.cv;
412 550
413 if (CvDEPTH (cv)) 551 if (expect_true (CvDEPTH (cv)))
414 { 552 {
415 EXTEND (SP, 3); 553 EXTEND (SP, 3);
416 PUSHs ((SV *)CvPADLIST (cv)); 554 PUSHs ((SV *)CvPADLIST (cv));
417 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
418 PUSHs ((SV *)cv); 556 PUSHs ((SV *)cv);
419 557
420 CvDEPTH (cv) = 0; 558 CvDEPTH (cv) = 0;
421 get_padlist (aTHX_ cv); 559 get_padlist (aTHX_ cv);
422 } 560 }
423 } 561 }
424 } 562 }
425 563
426 if (top_si->si_type == PERLSI_MAIN) 564 if (expect_true (top_si->si_type == PERLSI_MAIN))
427 break; 565 break;
428 566
429 top_si = top_si->si_prev; 567 top_si = top_si->si_prev;
430 ccstk = top_si->si_cxstack; 568 ccstk = top_si->si_cxstack;
431 cxix = top_si->si_cxix; 569 cxix = top_si->si_cxix;
432 } 570 }
433 571
434 PUTBACK; 572 PUTBACK;
435 } 573 }
436 574
437 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 575 /* allocate some space on the context stack for our purposes */
438 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 576 /* we manually unroll here, as usually 2 slots is enough */
439 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 577 if (SLOT_COUNT >= 1) CXINC;
440 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 578 if (SLOT_COUNT >= 2) CXINC;
441 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 579 if (SLOT_COUNT >= 3) CXINC;
580 {
581 int i;
582 for (i = 3; i < SLOT_COUNT; ++i)
583 CXINC;
584 }
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */
442 586
587 c->mainstack = PL_mainstack;
588
589 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591
592 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV;
594 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv);
596
443#define VAR(name,type)c->name = PL_ ## name; 597 #define VAR(name,type) slot->name = PL_ ## name;
444# include "state.h" 598 # include "state.h"
445#undef VAR 599 #undef VAR
600 }
446} 601}
447 602
448/* 603/*
449 * allocate various perl stacks. This is an exact copy 604 * allocate various perl stacks. This is almost an exact copy
450 * of perl.c:init_stacks, except that it uses less memory 605 * of perl.c:init_stacks, except that it uses less memory
451 * on the (sometimes correct) assumption that coroutines do 606 * on the (sometimes correct) assumption that coroutines do
452 * not usually need a lot of stackspace. 607 * not usually need a lot of stackspace.
453 */ 608 */
454#if CORO_PREFER_PERL_FUNCTIONS 609#if CORO_PREFER_PERL_FUNCTIONS
455# define coro_init_stacks init_stacks 610# define coro_init_stacks init_stacks
456#else 611#else
457static void 612static void
458coro_init_stacks (pTHX) 613coro_init_stacks (pTHX)
459{ 614{
460 PL_curstackinfo = new_stackinfo(64, 4); 615 PL_curstackinfo = new_stackinfo(32, 8);
461 PL_curstackinfo->si_type = PERLSI_MAIN; 616 PL_curstackinfo->si_type = PERLSI_MAIN;
462 PL_curstack = PL_curstackinfo->si_stack; 617 PL_curstack = PL_curstackinfo->si_stack;
463 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464 619
465 PL_stack_base = AvARRAY(PL_curstack); 620 PL_stack_base = AvARRAY(PL_curstack);
466 PL_stack_sp = PL_stack_base; 621 PL_stack_sp = PL_stack_base;
467 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 622 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468 623
469 New(50,PL_tmps_stack,64,SV*); 624 New(50,PL_tmps_stack,32,SV*);
470 PL_tmps_floor = -1; 625 PL_tmps_floor = -1;
471 PL_tmps_ix = -1; 626 PL_tmps_ix = -1;
472 PL_tmps_max = 64; 627 PL_tmps_max = 32;
473 628
474 New(54,PL_markstack,16,I32); 629 New(54,PL_markstack,16,I32);
475 PL_markstack_ptr = PL_markstack; 630 PL_markstack_ptr = PL_markstack;
476 PL_markstack_max = PL_markstack + 16; 631 PL_markstack_max = PL_markstack + 16;
477 632
478#ifdef SET_MARK_OFFSET 633#ifdef SET_MARK_OFFSET
479 SET_MARK_OFFSET; 634 SET_MARK_OFFSET;
480#endif 635#endif
481 636
482 New(54,PL_scopestack,16,I32); 637 New(54,PL_scopestack,8,I32);
483 PL_scopestack_ix = 0; 638 PL_scopestack_ix = 0;
484 PL_scopestack_max = 16; 639 PL_scopestack_max = 8;
485 640
486 New(54,PL_savestack,64,ANY); 641 New(54,PL_savestack,24,ANY);
487 PL_savestack_ix = 0; 642 PL_savestack_ix = 0;
488 PL_savestack_max = 64; 643 PL_savestack_max = 24;
489 644
490#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
491 New(54,PL_retstack,8,OP*); 646 New(54,PL_retstack,4,OP*);
492 PL_retstack_ix = 0; 647 PL_retstack_ix = 0;
493 PL_retstack_max = 8; 648 PL_retstack_max = 4;
494#endif 649#endif
495} 650}
496#endif 651#endif
497 652
498/* 653/*
499 * destroy the stacks, the callchain etc... 654 * destroy the stacks, the callchain etc...
500 */ 655 */
501static void 656static void
502coro_destroy_stacks (pTHX) 657coro_destruct_stacks (pTHX)
503{ 658{
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) 659 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 660 PL_curstackinfo = PL_curstackinfo->si_next;
523 661
524 while (PL_curstackinfo) 662 while (PL_curstackinfo)
525 { 663 {
… …
535 673
536 Safefree (PL_tmps_stack); 674 Safefree (PL_tmps_stack);
537 Safefree (PL_markstack); 675 Safefree (PL_markstack);
538 Safefree (PL_scopestack); 676 Safefree (PL_scopestack);
539 Safefree (PL_savestack); 677 Safefree (PL_savestack);
540#if !PERL_VERSION_ATLEAST (5,9,0) 678#if !PERL_VERSION_ATLEAST (5,10,0)
541 Safefree (PL_retstack); 679 Safefree (PL_retstack);
542#endif 680#endif
543} 681}
544 682
545static size_t 683static size_t
546coro_rss (struct coro *coro) 684coro_rss (pTHX_ struct coro *coro)
547{ 685{
548 size_t rss = sizeof (coro); 686 size_t rss = sizeof (*coro);
549 687
550 if (coro->mainstack) 688 if (coro->mainstack)
551 { 689 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
552 if (coro->flags & CF_RUNNING) 693 if (coro->flags & CF_RUNNING)
553 { 694 {
695 slot = &tmp_slot;
696
554 #define VAR(name,type)coro->name = PL_ ## name; 697 #define VAR(name,type) slot->name = PL_ ## name;
555 # include "state.h" 698 # include "state.h"
556 #undef VAR 699 #undef VAR
557 } 700 }
701 else
702 slot = coro->slot;
558 703
704 if (slot)
705 {
559 rss += sizeof (coro->curstackinfo); 706 rss += sizeof (slot->curstackinfo);
560 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
561 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
562 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
563 rss += coro->tmps_max * sizeof (SV *); 709 rss += slot->tmps_max * sizeof (SV *);
564 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
565 rss += coro->scopestack_max * sizeof (I32); 711 rss += slot->scopestack_max * sizeof (I32);
566 rss += coro->savestack_max * sizeof (ANY); 712 rss += slot->savestack_max * sizeof (ANY);
567 713
568#if !PERL_VERSION_ATLEAST (5,9,0) 714#if !PERL_VERSION_ATLEAST (5,10,0)
569 rss += coro->retstack_max * sizeof (OP *); 715 rss += slot->retstack_max * sizeof (OP *);
570#endif 716#endif
717 }
571 } 718 }
572 719
573 return rss; 720 return rss;
574} 721}
575 722
576/** coroutine stack handling ************************************************/ 723/** coroutine stack handling ************************************************/
577 724
725static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
727static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
728
729/* apparently < 5.8.8 */
730#ifndef MgPV_nolen_const
731#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
732 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
733 (const char*)(mg)->mg_ptr)
734#endif
735
736/*
737 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide
740 * readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */
578static void 745static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{
748 const char *s = MgPV_nolen_const (mg);
749
750 if (*s == '_')
751 {
752 SV **svp = 0;
753
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp)
758 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
760 return 0;
761 }
762 }
763
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = 0;
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789}
790
791static int
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{
794 const char *s = MgPV_nolen_const (mg);
795
796 if (*s == '_')
797 {
798 SV **svp = 0;
799
800 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802
803 if (svp)
804 {
805 SV *old = *svp;
806 *svp = newSVsv (sv);
807 SvREFCNT_dec (old);
808 return 0;
809 }
810 }
811
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813}
814
815static void
816prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{
818 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta;
820}
821
822static int
823slf_check_nop (pTHX_ struct CoroSLF *frame)
824{
825 return 0;
826}
827
828static void
579setup_coro (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
580{ 830{
581 /* 831 /*
582 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
583 */ 833 */
584 coro_init_stacks (aTHX); 834 coro_init_stacks (aTHX);
585 835
836 PL_runops = RUNOPS_DEFAULT;
586 PL_curcop = &PL_compiling; 837 PL_curcop = &PL_compiling;
587 PL_in_eval = EVAL_NULL; 838 PL_in_eval = EVAL_NULL;
588 PL_comppad = 0; 839 PL_comppad = 0;
589 PL_curpm = 0; 840 PL_curpm = 0;
841 PL_curpad = 0;
590 PL_localizing = 0; 842 PL_localizing = 0;
591 PL_dirty = 0; 843 PL_dirty = 0;
592 PL_restartop = 0; 844 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0;
847#endif
848
849 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852
853 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
857 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
593 859
594 { 860 {
595 dSP; 861 dSP;
596 LOGOP myop; 862 UNOP myop;
597 863
598 SvREFCNT_dec (GvAV (PL_defgv));
599 GvAV (PL_defgv) = coro->args; coro->args = 0;
600
601 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
602 myop.op_next = Nullop; 865 myop.op_next = Nullop;
603 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
604 867
605 PUSHMARK (SP); 868 PUSHMARK (SP);
606 XPUSHs (av_shift (GvAV (PL_defgv))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
607 PUTBACK; 870 PUTBACK;
608 PL_op = (OP *)&myop; 871 PL_op = (OP *)&myop;
609 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
610 SPAGAIN; 873 SPAGAIN;
611 } 874 }
612 875
613 ENTER; /* necessary e.g. for dounwind */ 876 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
614} 881}
615 882
616static void 883static void
884coro_destruct (pTHX_ struct coro *coro)
885{
886 if (!IN_DESTRUCT)
887 {
888 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0);
890 assert (PL_tmps_floor == -1);
891
892 /* free all temporaries */
893 FREETMPS;
894 assert (PL_tmps_ix == -1);
895
896 /* unwind all extra stacks */
897 POPSTACK_TO (PL_mainstack);
898
899 /* unwind main stack */
900 dounwind (-1);
901 }
902
903 SvREFCNT_dec (GvSV (PL_defgv));
904 SvREFCNT_dec (GvAV (PL_defgv));
905 SvREFCNT_dec (GvSV (PL_errgv));
906 SvREFCNT_dec (PL_defoutgv);
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912
913 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw);
915
916 coro_destruct_stacks (aTHX);
917}
918
919INLINE void
617free_coro_mortal (pTHX) 920free_coro_mortal (pTHX)
618{ 921{
619 if (coro_mortal) 922 if (expect_true (coro_mortal))
620 { 923 {
621 SvREFCNT_dec (coro_mortal); 924 SvREFCNT_dec (coro_mortal);
622 coro_mortal = 0; 925 coro_mortal = 0;
623 } 926 }
927}
928
929static int
930runops_trace (pTHX)
931{
932 COP *oldcop = 0;
933 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 {
939 PERL_ASYNC_CHECK ();
940
941 if (cctx->flags & CC_TRACE_ALL)
942 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
944 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top;
947 AV *av = newAV (); /* return values */
948 SV **cb;
949 dSP;
950
951 GV *gv = CvGV (cx->blk_sub.cv);
952 SV *fullname = sv_2mortal (newSV (0));
953 if (isGV (gv))
954 gv_efullname3 (fullname, gv, 0);
955
956 bot = PL_stack_base + cx->blk_oldsp + 1;
957 top = cx->blk_gimme == G_ARRAY ? SP + 1
958 : cx->blk_gimme == G_SCALAR ? bot + 1
959 : bot;
960
961 av_extend (av, top - bot);
962 while (bot < top)
963 av_push (av, SvREFCNT_inc_NN (*bot++));
964
965 PL_runops = RUNOPS_DEFAULT;
966 ENTER;
967 SAVETMPS;
968 EXTEND (SP, 3);
969 PUSHMARK (SP);
970 PUSHs (&PL_sv_no);
971 PUSHs (fullname);
972 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
973 PUTBACK;
974 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
975 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
976 SPAGAIN;
977 FREETMPS;
978 LEAVE;
979 PL_runops = runops_trace;
980 }
981
982 if (oldcop != PL_curcop)
983 {
984 oldcop = PL_curcop;
985
986 if (PL_curcop != &PL_compiling)
987 {
988 SV **cb;
989
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
991 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 {
996 runops_proc_t old_runops = PL_runops;
997 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0));
1000
1001 if (isGV (gv))
1002 gv_efullname3 (fullname, gv, 0);
1003
1004 PL_runops = RUNOPS_DEFAULT;
1005 ENTER;
1006 SAVETMPS;
1007 EXTEND (SP, 3);
1008 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN;
1016 FREETMPS;
1017 LEAVE;
1018 PL_runops = runops_trace;
1019 }
1020
1021 oldcxix = cxstack_ix;
1022 }
1023
1024 if (cctx->flags & CC_TRACE_LINE)
1025 {
1026 dSP;
1027
1028 PL_runops = RUNOPS_DEFAULT;
1029 ENTER;
1030 SAVETMPS;
1031 EXTEND (SP, 3);
1032 PL_runops = RUNOPS_DEFAULT;
1033 PUSHMARK (SP);
1034 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1035 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1036 PUTBACK;
1037 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1038 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1039 SPAGAIN;
1040 FREETMPS;
1041 LEAVE;
1042 PL_runops = runops_trace;
1043 }
1044 }
1045 }
1046 }
1047 }
1048
1049 TAINT_NOT;
1050 return 0;
1051}
1052
1053static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1055{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0;
624} 1058}
625 1059
626/* inject a fake call to Coro::State::_cctx_init into the execution */ 1060/* inject a fake call to Coro::State::_cctx_init into the execution */
627/* _cctx_init should be careful, as it could be called at almost any time */ 1061/* _cctx_init should be careful, as it could be called at almost any time */
628/* during execution of a perl program */ 1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
629static void NOINLINE 1064static void NOINLINE
630prepare_cctx (pTHX_ coro_cctx *cctx) 1065cctx_prepare (pTHX_ coro_cctx *cctx)
631{ 1066{
632 dSP; 1067 dSP;
633 LOGOP myop; 1068 UNOP myop;
634 1069
1070 PL_top_env = &PL_start_env;
1071
1072 if (cctx->flags & CC_TRACE)
1073 PL_runops = runops_trace;
1074
635 Zero (&myop, 1, LOGOP); 1075 Zero (&myop, 1, UNOP);
636 myop.op_next = PL_op; 1076 myop.op_next = PL_op;
637 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
638 1078
639 PUSHMARK (SP); 1079 PUSHMARK (SP);
640 EXTEND (SP, 2); 1080 EXTEND (SP, 2);
641 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1081 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
642 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
643 PUTBACK; 1083 PUTBACK;
644 PL_op = (OP *)&myop; 1084 PL_op = (OP *)&myop;
645 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
646 SPAGAIN; 1086 SPAGAIN;
647} 1087}
648 1088
1089/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void
1091transfer_tail (pTHX)
1092{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108}
1109
649/* 1110/*
650 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
651 */ 1112 */
652static void 1113static void
653coro_run (void *arg) 1114cctx_run (void *arg)
654{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
655 dTHX; 1122 dTHX;
656 1123
657 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
658 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */
659 1127
660 PL_top_env = &PL_start_env;
661
662 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
663 prepare_cctx (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
664 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX);
1134
665 /* somebody or something will hit me for both perl_run and PL_restartop */ 1135 /* somebody or something will hit me for both perl_run and PL_restartop */
666 PL_restartop = PL_op; 1136 PL_restartop = PL_op;
667 perl_run (PL_curinterp); 1137 perl_run (PL_curinterp);
668 1138
669 /* 1139 /*
670 * If perl-run returns we assume exit() was being called or the coro 1140 * If perl-run returns we assume exit() was being called or the coro
671 * fell off the end, which seems to be the only valid (non-bug) 1141 * fell off the end, which seems to be the only valid (non-bug)
672 * reason for perl_run to return. We try to exit by jumping to the 1142 * reason for perl_run to return. We try to exit by jumping to the
673 * bootstrap-time "top" top_env, as we cannot restore the "main" 1143 * bootstrap-time "top" top_env, as we cannot restore the "main"
674 * coroutine as Coro has no such concept 1144 * coroutine as Coro has no such concept
675 */ 1145 */
676 PL_top_env = main_top_env; 1146 PL_top_env = main_top_env;
677 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 }
678} 1149}
679 1150
680static coro_cctx * 1151static coro_cctx *
681cctx_new () 1152cctx_new ()
682{ 1153{
683 coro_cctx *cctx; 1154 coro_cctx *cctx;
1155
1156 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx);
1158
1159 cctx->gen = cctx_gen;
1160 cctx->flags = 0;
1161 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1162
1163 return cctx;
1164}
1165
1166/* create a new cctx only suitable as source */
1167static coro_cctx *
1168cctx_new_empty ()
1169{
1170 coro_cctx *cctx = cctx_new ();
1171
1172 cctx->sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx *
1180cctx_new_run ()
1181{
1182 coro_cctx *cctx = cctx_new ();
684 void *stack_start; 1183 void *stack_start;
685 size_t stack_size; 1184 size_t stack_size;
686 1185
687 ++cctx_count;
688
689 Newz (0, cctx, 1, coro_cctx);
690
691#if HAVE_MMAP 1186#if HAVE_MMAP
692
693 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
694 /* mmap supposedly does allocate-on-write for us */ 1188 /* mmap supposedly does allocate-on-write for us */
695 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
696 1190
697 if (cctx->sptr != (void *)-1) 1191 if (cctx->sptr != (void *)-1)
698 { 1192 {
699# if CORO_STACKGUARD 1193 #if CORO_STACKGUARD
700 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
701# endif 1195 #endif
702 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
703 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
704 cctx->mapped = 1; 1198 cctx->flags |= CC_MAPPED;
705 } 1199 }
706 else 1200 else
707#endif 1201#endif
708 { 1202 {
709 cctx->ssize = coro_stacksize * (long)sizeof (long); 1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
710 New (0, cctx->sptr, coro_stacksize, long); 1204 New (0, cctx->sptr, cctx_stacksize, long);
711 1205
712 if (!cctx->sptr) 1206 if (!cctx->sptr)
713 { 1207 {
714 perror ("FATAL: unable to allocate stack for coroutine"); 1208 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
715 _exit (EXIT_FAILURE); 1209 _exit (EXIT_FAILURE);
716 } 1210 }
717 1211
718 stack_start = cctx->sptr; 1212 stack_start = cctx->sptr;
719 stack_size = cctx->ssize; 1213 stack_size = cctx->ssize;
720 } 1214 }
721 1215
722 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
723 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
724 1221
725 return cctx; 1222 return cctx;
726} 1223}
727 1224
728static void 1225static void
… …
730{ 1227{
731 if (!cctx) 1228 if (!cctx)
732 return; 1229 return;
733 1230
734 --cctx_count; 1231 --cctx_count;
1232 coro_destroy (&cctx->cctx);
735 1233
1234 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr)
1236 {
736#if CORO_USE_VALGRIND 1237 #if CORO_USE_VALGRIND
737 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
738#endif 1239 #endif
739 1240
740#if HAVE_MMAP 1241#if HAVE_MMAP
741 if (cctx->mapped) 1242 if (cctx->flags & CC_MAPPED)
742 munmap (cctx->sptr, cctx->ssize); 1243 munmap (cctx->sptr, cctx->ssize);
743 else 1244 else
744#endif 1245#endif
745 Safefree (cctx->sptr); 1246 Safefree (cctx->sptr);
1247 }
746 1248
747 Safefree (cctx); 1249 Safefree (cctx);
748} 1250}
1251
1252/* wether this cctx should be destructed */
1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
749 1254
750static coro_cctx * 1255static coro_cctx *
751cctx_get (pTHX) 1256cctx_get (pTHX)
752{ 1257{
753 while (cctx_first) 1258 while (expect_true (cctx_first))
754 { 1259 {
755 coro_cctx *cctx = cctx_first; 1260 coro_cctx *cctx = cctx_first;
756 cctx_first = cctx->next; 1261 cctx_first = cctx->next;
757 --cctx_idle; 1262 --cctx_idle;
758 1263
759 if (cctx->ssize >= coro_stacksize) 1264 if (expect_true (!CCTX_EXPIRED (cctx)))
760 return cctx; 1265 return cctx;
761 1266
762 cctx_destroy (cctx); 1267 cctx_destroy (cctx);
763 } 1268 }
764 1269
765 PL_op = PL_op->op_next;
766 return cctx_new (); 1270 return cctx_new_run ();
767} 1271}
768 1272
769static void 1273static void
770cctx_put (coro_cctx *cctx) 1274cctx_put (coro_cctx *cctx)
771{ 1275{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1277
772 /* free another cctx if overlimit */ 1278 /* free another cctx if overlimit */
773 if (cctx_idle >= MAX_IDLE_CCTX) 1279 if (expect_false (cctx_idle >= cctx_max_idle))
774 { 1280 {
775 coro_cctx *first = cctx_first; 1281 coro_cctx *first = cctx_first;
776 cctx_first = first->next; 1282 cctx_first = first->next;
777 --cctx_idle; 1283 --cctx_idle;
778 1284
779 assert (!first->inuse);
780 cctx_destroy (first); 1285 cctx_destroy (first);
781 } 1286 }
782 1287
783 ++cctx_idle; 1288 ++cctx_idle;
784 cctx->next = cctx_first; 1289 cctx->next = cctx_first;
785 cctx_first = cctx; 1290 cctx_first = cctx;
786} 1291}
787 1292
788/** coroutine switching *****************************************************/ 1293/** coroutine switching *****************************************************/
789 1294
790/* never call directly, always through the coro_state_transfer global variable */ 1295static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{
1298 if (expect_true (prev != next))
1299 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302
1303 if (expect_false (next->flags & CF_RUNNING))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED))
1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1308
1309#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif
1313 }
1314}
1315
1316/* always use the TRANSFER macro */
791static void NOINLINE 1317static void NOINLINE
792transfer (pTHX_ struct coro *prev, struct coro *next) 1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
793{ 1319{
794 dSTACKLEVEL; 1320 dSTACKLEVEL;
795 1321
796 /* sometimes transfer is only called to set idle_sp */ 1322 /* sometimes transfer is only called to set idle_sp */
797 if (!next) 1323 if (expect_false (!next))
798 { 1324 {
799 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
800 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
801 } 1327 }
802 else if (prev != next) 1328 else if (expect_true (prev != next))
803 { 1329 {
804 coro_cctx *prev__cctx; 1330 coro_cctx *prev__cctx;
805 1331
806 if (prev->flags & CF_NEW) 1332 if (expect_false (prev->flags & CF_NEW))
807 { 1333 {
808 /* create a new empty context */ 1334 /* create a new empty/source context */
809 Newz (0, prev->cctx, 1, coro_cctx); 1335 prev->cctx = cctx_new_empty ();
810 prev->cctx->inuse = 1;
811 prev->flags &= ~CF_NEW; 1336 prev->flags &= ~CF_NEW;
812 prev->flags |= CF_RUNNING; 1337 prev->flags |= CF_RUNNING;
813 } 1338 }
814 1339
815 /*TODO: must not croak here */
816 if (!prev->flags & CF_RUNNING)
817 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
818
819 if (next->flags & CF_RUNNING)
820 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
821
822 if (next->flags & CF_DESTROYED)
823 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
824
825 prev->flags &= ~CF_RUNNING; 1340 prev->flags &= ~CF_RUNNING;
826 next->flags |= CF_RUNNING; 1341 next->flags |= CF_RUNNING;
827 1342
828 LOCK; 1343 LOCK;
829 1344
1345 /* first get rid of the old state */
1346 save_perl (aTHX_ prev);
1347
830 if (next->flags & CF_NEW) 1348 if (expect_false (next->flags & CF_NEW))
831 { 1349 {
832 /* need to start coroutine */ 1350 /* need to start coroutine */
833 next->flags &= ~CF_NEW; 1351 next->flags &= ~CF_NEW;
834 /* first get rid of the old state */
835 save_perl (aTHX_ prev);
836 /* setup coroutine call */ 1352 /* setup coroutine call */
837 setup_coro (aTHX_ next); 1353 coro_setup (aTHX_ next);
838 /* need a new stack */
839 assert (!next->cctx);
840 } 1354 }
841 else 1355 else
1356 load_perl (aTHX_ next);
1357
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */
1361 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel
1363 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx
1365 ))
842 { 1366 {
843 /* coroutine already started */ 1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
844 save_perl (aTHX_ prev); 1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
845 load_perl (aTHX_ next); 1369
1370 prev->cctx = 0;
1371
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1375 if (!next->cctx)
1376 next->cctx = cctx_get (aTHX);
1377
1378 cctx_put (prev__cctx);
846 } 1379 }
847 1380
848 prev__cctx = prev->cctx; 1381 ++next->usecount;
849 1382
850 /* possibly "free" the cctx */
851 if (prev__cctx->idle_sp == STACKLEVEL)
852 {
853 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
854 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
855
856 prev->cctx = 0;
857
858 cctx_put (prev__cctx);
859 prev__cctx->inuse = 0;
860 }
861
862 if (!next->cctx) 1383 if (expect_true (!next->cctx))
863 {
864 next->cctx = cctx_get (aTHX); 1384 next->cctx = cctx_get (aTHX);
865 assert (!next->cctx->inuse);
866 next->cctx->inuse = 1;
867 }
868 1385
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1388
869 if (prev__cctx != next->cctx) 1389 if (expect_false (prev__cctx != next->cctx))
870 { 1390 {
871 prev__cctx->top_env = PL_top_env; 1391 prev__cctx->top_env = PL_top_env;
872 PL_top_env = next->cctx->top_env; 1392 PL_top_env = next->cctx->top_env;
873 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
874 } 1394 }
875 1395
876 free_coro_mortal (aTHX); 1396 transfer_tail (aTHX);
877 UNLOCK;
878 } 1397 }
879} 1398}
880 1399
881struct transfer_args 1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
882{
883 struct coro *prev, *next;
884};
885
886#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
887 1402
888/** high level stuff ********************************************************/ 1403/** high level stuff ********************************************************/
889 1404
890static int 1405static int
891coro_state_destroy (pTHX_ struct coro *coro) 1406coro_state_destroy (pTHX_ struct coro *coro)
… …
908 1423
909 if (coro->mainstack && coro->mainstack != main_mainstack) 1424 if (coro->mainstack && coro->mainstack != main_mainstack)
910 { 1425 {
911 struct coro temp; 1426 struct coro temp;
912 1427
913 assert (!(coro->flags & CF_RUNNING)); 1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
914
915 Zero (&temp, 1, struct coro);
916 temp.save = CORO_SAVE_ALL;
917
918 if (coro->flags & CF_RUNNING)
919 croak ("FATAL: tried to destroy currently running coroutine");
920 1429
921 save_perl (aTHX_ &temp); 1430 save_perl (aTHX_ &temp);
922 load_perl (aTHX_ coro); 1431 load_perl (aTHX_ coro);
923 1432
924 coro_destroy_stacks (aTHX); 1433 coro_destruct (aTHX_ coro);
925 1434
926 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1435 load_perl (aTHX_ &temp);
927 1436
928 coro->mainstack = 0; 1437 coro->slot = 0;
929 } 1438 }
930 1439
931 cctx_destroy (coro->cctx); 1440 cctx_destroy (coro->cctx);
932 SvREFCNT_dec (coro->args); 1441 SvREFCNT_dec (coro->args);
933 1442
… …
974#else 1483#else
975# define MGf_DUP 0 1484# define MGf_DUP 0
976#endif 1485#endif
977}; 1486};
978 1487
979static struct coro *
980SvSTATE_ (pTHX_ SV *coro)
981{
982 HV *stash;
983 MAGIC *mg;
984
985 if (SvROK (coro))
986 coro = SvRV (coro);
987
988 stash = SvSTASH (coro);
989 if (stash != coro_stash && stash != coro_state_stash)
990 {
991 /* very slow, but rare, check */
992 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
993 croak ("Coro::State object required");
994 }
995
996 mg = CORO_MAGIC (coro);
997 return (struct coro *)mg->mg_ptr;
998}
999
1000#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1001
1002static void 1488static void
1003prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1489prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1004{ 1490{
1005 ta->prev = SvSTATE (prev_sv); 1491 ta->prev = SvSTATE (prev_sv);
1006 ta->next = SvSTATE (next_sv); 1492 ta->next = SvSTATE (next_sv);
1493 TRANSFER_CHECK (*ta);
1007} 1494}
1008 1495
1009static void 1496static void
1010api_transfer (SV *prev_sv, SV *next_sv) 1497api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1011{ 1498{
1012 dTHX;
1013 struct transfer_args ta; 1499 struct coro_transfer_args ta;
1014 1500
1015 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1016 TRANSFER (ta); 1502 TRANSFER (ta, 1);
1017}
1018
1019static int
1020api_save (SV *coro_sv, int new_save)
1021{
1022 dTHX;
1023 struct coro *coro = SvSTATE (coro_sv);
1024 int old_save = coro->save;
1025
1026 if (new_save >= 0)
1027 coro->save = new_save;
1028
1029 return old_save;
1030} 1503}
1031 1504
1032/** Coro ********************************************************************/ 1505/** Coro ********************************************************************/
1033 1506
1034static void 1507static void
… …
1036{ 1509{
1037 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1038} 1511}
1039 1512
1040static SV * 1513static SV *
1041coro_deq (pTHX_ int min_prio) 1514coro_deq (pTHX)
1042{ 1515{
1043 int prio = PRIO_MAX - PRIO_MIN; 1516 int prio;
1044 1517
1045 min_prio -= PRIO_MIN;
1046 if (min_prio < 0)
1047 min_prio = 0;
1048
1049 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1050 if (AvFILLp (coro_ready [prio]) >= 0) 1519 if (AvFILLp (coro_ready [prio]) >= 0)
1051 return av_shift (coro_ready [prio]); 1520 return av_shift (coro_ready [prio]);
1052 1521
1053 return 0; 1522 return 0;
1054} 1523}
1055 1524
1056static int 1525static int
1057api_ready (SV *coro_sv) 1526api_ready (pTHX_ SV *coro_sv)
1058{ 1527{
1059 dTHX;
1060 struct coro *coro; 1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1061 1531
1062 if (SvROK (coro_sv)) 1532 if (SvROK (coro_sv))
1063 coro_sv = SvRV (coro_sv); 1533 coro_sv = SvRV (coro_sv);
1064 1534
1065 coro = SvSTATE (coro_sv); 1535 coro = SvSTATE (coro_sv);
… …
1068 return 0; 1538 return 0;
1069 1539
1070 coro->flags |= CF_READY; 1540 coro->flags |= CF_READY;
1071 1541
1072 LOCK; 1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546
1073 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1074 ++coro_nready; 1548 ++coro_nready;
1549
1075 UNLOCK; 1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1076 1570
1077 return 1; 1571 return 1;
1078} 1572}
1079 1573
1080static int 1574static int
1081api_is_ready (SV *coro_sv) 1575api_is_ready (pTHX_ SV *coro_sv)
1082{ 1576{
1083 dTHX;
1084 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1577 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1085} 1578}
1086 1579
1087static void 1580INLINE void
1088prepare_schedule (pTHX_ struct transfer_args *ta) 1581prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1089{ 1582{
1090 SV *prev_sv, *next_sv; 1583 SV *prev_sv, *next_sv;
1091 1584
1092 for (;;) 1585 for (;;)
1093 { 1586 {
1094 LOCK; 1587 LOCK;
1095 next_sv = coro_deq (aTHX_ PRIO_MIN); 1588 next_sv = coro_deq (aTHX);
1096 1589
1097 /* nothing to schedule: call the idle handler */ 1590 /* nothing to schedule: call the idle handler */
1098 if (!next_sv) 1591 if (expect_false (!next_sv))
1099 { 1592 {
1100 dSP; 1593 dSP;
1101 UNLOCK; 1594 UNLOCK;
1102 1595
1103 ENTER; 1596 ENTER;
1104 SAVETMPS; 1597 SAVETMPS;
1105 1598
1106 PUSHMARK (SP); 1599 PUSHMARK (SP);
1107 PUTBACK; 1600 PUTBACK;
1108 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1109 1603
1110 FREETMPS; 1604 FREETMPS;
1111 LEAVE; 1605 LEAVE;
1112 continue; 1606 continue;
1113 } 1607 }
1114 1608
1115 ta->next = SvSTATE (next_sv); 1609 ta->next = SvSTATE (next_sv);
1116 1610
1117 /* cannot transfer to destroyed coros, skip and look for next */ 1611 /* cannot transfer to destroyed coros, skip and look for next */
1118 if (ta->next->flags & CF_DESTROYED) 1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1119 { 1613 {
1120 UNLOCK; 1614 UNLOCK;
1121 SvREFCNT_dec (next_sv); 1615 SvREFCNT_dec (next_sv);
1122 /* coro_nready is already taken care of by destroy */ 1616 /* coro_nready has already been taken care of by destroy */
1123 continue; 1617 continue;
1124 } 1618 }
1125 1619
1126 --coro_nready; 1620 --coro_nready;
1127 UNLOCK; 1621 UNLOCK;
1128 break; 1622 break;
1129 } 1623 }
1130 1624
1131 /* free this only after the transfer */ 1625 /* free this only after the transfer */
1132 prev_sv = SvRV (coro_current); 1626 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv);
1628 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY;
1133 SvRV_set (coro_current, next_sv); 1631 SvRV_set (coro_current, next_sv);
1134 ta->prev = SvSTATE (prev_sv);
1135
1136 assert (ta->next->flags & CF_READY);
1137 ta->next->flags &= ~CF_READY;
1138 1632
1139 LOCK; 1633 LOCK;
1140 free_coro_mortal (aTHX); 1634 free_coro_mortal (aTHX);
1141 coro_mortal = prev_sv; 1635 coro_mortal = prev_sv;
1142 UNLOCK; 1636 UNLOCK;
1143} 1637}
1144 1638
1145static void 1639INLINE void
1146prepare_cede (pTHX_ struct transfer_args *ta) 1640prepare_cede (pTHX_ struct coro_transfer_args *ta)
1147{ 1641{
1148 api_ready (coro_current); 1642 api_ready (aTHX_ coro_current);
1149 prepare_schedule (aTHX_ ta); 1643 prepare_schedule (aTHX_ ta);
1150} 1644}
1151 1645
1646INLINE void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{
1649 SV *prev = SvRV (coro_current);
1650
1651 if (coro_nready)
1652 {
1653 prepare_schedule (aTHX_ ta);
1654 api_ready (aTHX_ prev);
1655 }
1656 else
1657 prepare_nop (aTHX_ ta);
1658}
1659
1660static void
1661api_schedule (pTHX)
1662{
1663 struct coro_transfer_args ta;
1664
1665 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1);
1667}
1668
1152static int 1669static int
1153prepare_cede_notself (pTHX_ struct transfer_args *ta) 1670api_cede (pTHX)
1154{ 1671{
1155 if (coro_nready) 1672 struct coro_transfer_args ta;
1156 { 1673
1157 SV *prev = SvRV (coro_current);
1158 prepare_schedule (aTHX_ ta); 1674 prepare_cede (aTHX_ &ta);
1159 api_ready (prev); 1675
1676 if (expect_true (ta.prev != ta.next))
1677 {
1678 TRANSFER (ta, 1);
1160 return 1; 1679 return 1;
1161 } 1680 }
1162 else 1681 else
1163 return 0; 1682 return 0;
1164} 1683}
1165 1684
1166static void
1167api_schedule (void)
1168{
1169 dTHX;
1170 struct transfer_args ta;
1171
1172 prepare_schedule (aTHX_ &ta);
1173 TRANSFER (ta);
1174}
1175
1176static int 1685static int
1177api_cede (void) 1686api_cede_notself (pTHX)
1178{ 1687{
1179 dTHX; 1688 if (coro_nready)
1689 {
1180 struct transfer_args ta; 1690 struct coro_transfer_args ta;
1181 1691
1182 prepare_cede (aTHX_ &ta); 1692 prepare_cede_notself (aTHX_ &ta);
1183
1184 if (ta.prev != ta.next)
1185 {
1186 TRANSFER (ta); 1693 TRANSFER (ta, 1);
1187 return 1; 1694 return 1;
1188 } 1695 }
1189 else 1696 else
1190 return 0; 1697 return 0;
1191} 1698}
1192 1699
1700static void
1701api_trace (pTHX_ SV *coro_sv, int flags)
1702{
1703 struct coro *coro = SvSTATE (coro_sv);
1704
1705 if (flags & CC_TRACE)
1706 {
1707 if (!coro->cctx)
1708 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,");
1711
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 {
1716 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1717
1718 if (coro->flags & CF_RUNNING)
1719 PL_runops = RUNOPS_DEFAULT;
1720 else
1721 coro->slot->runops = RUNOPS_DEFAULT;
1722 }
1723}
1724
1725/*****************************************************************************/
1726/* PerlIO::cede */
1727
1728typedef struct
1729{
1730 PerlIOBuf base;
1731 NV next, every;
1732} PerlIOCede;
1733
1734static IV
1735PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1736{
1737 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1738
1739 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1740 self->next = nvtime () + self->every;
1741
1742 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1743}
1744
1745static SV *
1746PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1747{
1748 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1749
1750 return newSVnv (self->every);
1751}
1752
1753static IV
1754PerlIOCede_flush (pTHX_ PerlIO *f)
1755{
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime ();
1758
1759 if (now >= self->next)
1760 {
1761 api_cede (aTHX);
1762 self->next = now + self->every;
1763 }
1764
1765 return PerlIOBuf_flush (aTHX_ f);
1766}
1767
1768static PerlIO_funcs PerlIO_cede =
1769{
1770 sizeof(PerlIO_funcs),
1771 "cede",
1772 sizeof(PerlIOCede),
1773 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1774 PerlIOCede_pushed,
1775 PerlIOBuf_popped,
1776 PerlIOBuf_open,
1777 PerlIOBase_binmode,
1778 PerlIOCede_getarg,
1779 PerlIOBase_fileno,
1780 PerlIOBuf_dup,
1781 PerlIOBuf_read,
1782 PerlIOBuf_unread,
1783 PerlIOBuf_write,
1784 PerlIOBuf_seek,
1785 PerlIOBuf_tell,
1786 PerlIOBuf_close,
1787 PerlIOCede_flush,
1788 PerlIOBuf_fill,
1789 PerlIOBase_eof,
1790 PerlIOBase_error,
1791 PerlIOBase_clearerr,
1792 PerlIOBase_setlinebuf,
1793 PerlIOBuf_get_base,
1794 PerlIOBuf_bufsiz,
1795 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt,
1798};
1799
1800/*****************************************************************************/
1801
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP *
1813pp_restore (pTHX)
1814{
1815 dSP;
1816
1817 PUSHMARK (SP);
1818
1819 EXTEND (SP, 3);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826}
1827
1828static void
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833
1834static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1836{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1838
1839 frame->prepare = slf_prepare_set_stacklevel;
1840 frame->check = slf_check_nop;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843
1844static void
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 {
1903 /* first iteration */
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908
1909 /* do a quick consistency check on the "function" object, and if it isn't */
1910 /* for us, divert to the real entersub */
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1912 return PL_ppaddr[OP_ENTERSUB](aTHX);
1913
1914 /* pop args */
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 {
1919 /* ampersand-form of call, use @_ instead of stack */
1920 AV *av = GvAV (PL_defgv);
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 }
1924
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, GvCV (gv), arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 {
1955 if (sp == bot)
1956 XPUSHs (&PL_sv_undef);
1957
1958 SP = bot + 1;
1959 }
1960
1961 PUTBACK;
1962 }
1963
1964 return NORMAL;
1965}
1966
1967static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1969{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1971
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998}
1999
2000/*****************************************************************************/
2001
1193static int 2002static int
1194api_cede_notself (void) 2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1195{ 2004{
1196 dTHX; 2005 AV *av = (AV *)frame->data;
1197 struct transfer_args ta; 2006 SV *count_sv = AvARRAY (av)[0];
1198 2007
1199 if (prepare_cede_notself (aTHX_ &ta)) 2008 if (SvIVX (count_sv) > 0)
2009 {
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2011 return 0;
1200 { 2012 }
1201 TRANSFER (ta); 2013 else
2014 {
2015 int i;
2016 /* if we were woken up but can't down, we look through the whole */
2017 /* waiters list and only add us if we aren't in there already */
2018 /* this avoids some degenerate memory usage cases */
2019
2020 for (i = 1; i <= AvFILLp (av); ++i)
2021 if (AvARRAY (av)[i] == SvRV (coro_current))
2022 return 1;
2023
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1202 return 1; 2025 return 1;
1203 } 2026 }
2027}
2028
2029static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{
2032 AV *av = (AV *)SvRV (arg [0]);
2033
2034 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 {
2036 frame->data = (void *)av;
2037 frame->prepare = prepare_nop;
2038 }
1204 else 2039 else
1205 return 0; 2040 {
1206} 2041 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1207 2042
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule;
2045 }
2046
2047 frame->check = slf_check_semaphore_down;
2048
2049}
2050
2051/*****************************************************************************/
2052
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2054
2055/* create a closure from XS, returns a code reference */
2056/* the arg can be accessed via GENSUB_ARG from the callback */
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{
2061 CV *cv = (CV *)NEWSV (0, 0);
2062
2063 sv_upgrade ((SV *)cv, SVt_PVCV);
2064
2065 CvANON_on (cv);
2066 CvISXSUB_on (cv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069
2070 return newRV_noinc ((SV *)cv);
2071}
2072
2073/*****************************************************************************/
2074
1208MODULE = Coro::State PACKAGE = Coro::State 2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1209 2076
1210PROTOTYPES: DISABLE 2077PROTOTYPES: DISABLE
1211 2078
1212BOOT: 2079BOOT:
1213{ 2080{
1214#ifdef USE_ITHREADS 2081#ifdef USE_ITHREADS
1215 MUTEX_INIT (&coro_mutex); 2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT;
2085# endif
1216#endif 2086#endif
1217 BOOT_PAGESIZE; 2087 BOOT_PAGESIZE;
1218 2088
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2093 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2094 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2095
2096 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2097 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2098 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2099
1219 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2100 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1220 2101
1221 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2102 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1222 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 2103 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1223 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1224 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1225 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1226 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 2104 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1227 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2105 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1228 2106
1229 main_mainstack = PL_mainstack; 2107 main_mainstack = PL_mainstack;
1230 main_top_env = PL_top_env; 2108 main_top_env = PL_top_env;
1231 2109
1232 while (main_top_env->je_prev) 2110 while (main_top_env->je_prev)
1233 main_top_env = main_top_env->je_prev; 2111 main_top_env = main_top_env->je_prev;
1234 2112
1235 coroapi.ver = CORO_API_VERSION; 2113 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION;
2115
1236 coroapi.transfer = api_transfer; 2116 coroapi.transfer = api_transfer;
2117
2118 coroapi.sv_state = SvSTATE_;
2119 coroapi.execute_slf = api_execute_slf;
2120 coroapi.prepare_nop = prepare_nop;
2121 coroapi.prepare_schedule = prepare_schedule;
2122 coroapi.prepare_cede = prepare_cede;
2123 coroapi.prepare_cede_notself = prepare_cede_notself;
2124
2125 {
2126 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2127
2128 if (!svp) croak ("Time::HiRes is required");
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2132 }
1237 2133
1238 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1239} 2135}
1240 2136
1241SV * 2137SV *
1242new (char *klass, ...) 2138new (char *klass, ...)
1243 CODE: 2139 CODE:
1244{ 2140{
1245 struct coro *coro; 2141 struct coro *coro;
2142 MAGIC *mg;
1246 HV *hv; 2143 HV *hv;
1247 int i; 2144 int i;
1248 2145
1249 Newz (0, coro, 1, struct coro); 2146 Newz (0, coro, 1, struct coro);
1250 coro->args = newAV (); 2147 coro->args = newAV ();
1251 coro->save = CORO_SAVE_DEF;
1252 coro->flags = CF_NEW; 2148 coro->flags = CF_NEW;
1253 2149
1254 if (coro_first) coro_first->prev = coro; 2150 if (coro_first) coro_first->prev = coro;
1255 coro->next = coro_first; 2151 coro->next = coro_first;
1256 coro_first = coro; 2152 coro_first = coro;
1257 2153
1258 coro->hv = hv = newHV (); 2154 coro->hv = hv = newHV ();
1259 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP;
1260 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1261 2158
2159 av_extend (coro->args, items - 1);
1262 for (i = 1; i < items; i++) 2160 for (i = 1; i < items; i++)
1263 av_push (coro->args, newSVsv (ST (i))); 2161 av_push (coro->args, newSVsv (ST (i)));
1264} 2162}
1265 OUTPUT: 2163 OUTPUT:
1266 RETVAL 2164 RETVAL
1267 2165
1268int
1269save (SV *coro, int new_save = -1)
1270 CODE:
1271 RETVAL = api_save (coro, new_save);
1272 OUTPUT:
1273 RETVAL
1274
1275int
1276save_also (SV *coro_sv, int save_also)
1277 CODE:
1278{
1279 struct coro *coro = SvSTATE (coro_sv);
1280 RETVAL = coro->save;
1281 coro->save |= save_also;
1282}
1283 OUTPUT:
1284 RETVAL
1285
1286void 2166void
1287_set_stacklevel (...) 2167_set_stacklevel (...)
1288 ALIAS: 2168 CODE:
1289 Coro::State::transfer = 1 2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1290 Coro::schedule = 2
1291 Coro::cede = 3
1292 Coro::cede_notself = 4
1293 CODE:
1294{
1295 struct transfer_args ta;
1296 2170
1297 switch (ix) 2171void
1298 { 2172transfer (...)
1299 case 0: 2173 PROTOTYPE: $$
1300 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2174 CODE:
1301 ta.next = 0; 2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1302 break;
1303
1304 case 1:
1305 if (items != 2)
1306 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1307
1308 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1309 break;
1310
1311 case 2:
1312 prepare_schedule (aTHX_ &ta);
1313 break;
1314
1315 case 3:
1316 prepare_cede (aTHX_ &ta);
1317 break;
1318
1319 case 4:
1320 if (!prepare_cede_notself (aTHX_ &ta))
1321 XSRETURN_EMPTY;
1322
1323 break;
1324 }
1325
1326 BARRIER;
1327 TRANSFER (ta);
1328
1329 if (GIMME_V != G_VOID && ta.next != ta.prev)
1330 XSRETURN_YES;
1331}
1332 2176
1333bool 2177bool
1334_destroy (SV *coro_sv) 2178_destroy (SV *coro_sv)
1335 CODE: 2179 CODE:
1336 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1337 OUTPUT: 2181 OUTPUT:
1338 RETVAL 2182 RETVAL
1339 2183
1340void 2184void
1341_exit (code) 2185_exit (int code)
1342 int code
1343 PROTOTYPE: $ 2186 PROTOTYPE: $
1344 CODE: 2187 CODE:
1345 _exit (code); 2188 _exit (code);
1346 2189
1347int 2190int
1348cctx_stacksize (int new_stacksize = 0) 2191cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$
1349 CODE: 2193 CODE:
1350 RETVAL = coro_stacksize; 2194 RETVAL = cctx_stacksize;
1351 if (new_stacksize) 2195 if (new_stacksize)
2196 {
1352 coro_stacksize = new_stacksize; 2197 cctx_stacksize = new_stacksize;
2198 ++cctx_gen;
2199 }
1353 OUTPUT: 2200 OUTPUT:
1354 RETVAL 2201 RETVAL
1355 2202
1356int 2203int
2204cctx_max_idle (int max_idle = 0)
2205 PROTOTYPE: ;$
2206 CODE:
2207 RETVAL = cctx_max_idle;
2208 if (max_idle > 1)
2209 cctx_max_idle = max_idle;
2210 OUTPUT:
2211 RETVAL
2212
2213int
1357cctx_count () 2214cctx_count ()
2215 PROTOTYPE:
1358 CODE: 2216 CODE:
1359 RETVAL = cctx_count; 2217 RETVAL = cctx_count;
1360 OUTPUT: 2218 OUTPUT:
1361 RETVAL 2219 RETVAL
1362 2220
1363int 2221int
1364cctx_idle () 2222cctx_idle ()
2223 PROTOTYPE:
1365 CODE: 2224 CODE:
1366 RETVAL = cctx_idle; 2225 RETVAL = cctx_idle;
1367 OUTPUT: 2226 OUTPUT:
1368 RETVAL 2227 RETVAL
1369 2228
1370void 2229void
1371list () 2230list ()
2231 PROTOTYPE:
1372 PPCODE: 2232 PPCODE:
1373{ 2233{
1374 struct coro *coro; 2234 struct coro *coro;
1375 for (coro = coro_first; coro; coro = coro->next) 2235 for (coro = coro_first; coro; coro = coro->next)
1376 if (coro->hv) 2236 if (coro->hv)
1377 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 2237 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1378} 2238}
1379 2239
1380void 2240void
1381_eval (Coro::State coro, SV *coderef) 2241call (Coro::State coro, SV *coderef)
2242 ALIAS:
2243 eval = 1
1382 CODE: 2244 CODE:
1383{ 2245{
1384 if (coro->mainstack) 2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1385 { 2247 {
1386 struct coro temp; 2248 struct coro temp;
1387 Zero (&temp, 1, struct coro);
1388 temp.save = CORO_SAVE_ALL;
1389 2249
1390 if (!(coro->flags & CF_RUNNING)) 2250 if (!(coro->flags & CF_RUNNING))
1391 { 2251 {
2252 PUTBACK;
1392 save_perl (aTHX_ &temp); 2253 save_perl (aTHX_ &temp);
1393 load_perl (aTHX_ coro); 2254 load_perl (aTHX_ coro);
1394 } 2255 }
1395 2256
1396 { 2257 {
1397 dSP; 2258 dSP;
1398 ENTER; 2259 ENTER;
1399 SAVETMPS; 2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK;
1400 PUSHMARK (SP); 2263 PUSHMARK (SP);
1401 PUTBACK; 2264
2265 if (ix)
2266 eval_sv (coderef, 0);
2267 else
1402 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269
2270 POPSTACK;
1403 SPAGAIN; 2271 SPAGAIN;
1404 FREETMPS; 2272 FREETMPS;
1405 LEAVE; 2273 LEAVE;
1406 PUTBACK; 2274 PUTBACK;
1407 } 2275 }
1408 2276
1409 if (!(coro->flags & CF_RUNNING)) 2277 if (!(coro->flags & CF_RUNNING))
1410 { 2278 {
1411 save_perl (aTHX_ coro); 2279 save_perl (aTHX_ coro);
1412 load_perl (aTHX_ &temp); 2280 load_perl (aTHX_ &temp);
2281 SPAGAIN;
1413 } 2282 }
1414 } 2283 }
1415} 2284}
1416 2285
1417SV * 2286SV *
1418is_ready (Coro::State coro) 2287is_ready (Coro::State coro)
1419 PROTOTYPE: $ 2288 PROTOTYPE: $
1420 ALIAS: 2289 ALIAS:
1421 is_ready = CF_READY 2290 is_ready = CF_READY
… …
1425 CODE: 2294 CODE:
1426 RETVAL = boolSV (coro->flags & ix); 2295 RETVAL = boolSV (coro->flags & ix);
1427 OUTPUT: 2296 OUTPUT:
1428 RETVAL 2297 RETVAL
1429 2298
1430IV 2299void
2300throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$
2302 CODE:
2303 SvREFCNT_dec (self->throw);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2305
2306void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags
2310
2311SV *
2312has_cctx (Coro::State coro)
2313 PROTOTYPE: $
2314 CODE:
2315 RETVAL = boolSV (!!coro->cctx);
2316 OUTPUT:
2317 RETVAL
2318
2319int
2320is_traced (Coro::State coro)
2321 PROTOTYPE: $
2322 CODE:
2323 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2324 OUTPUT:
2325 RETVAL
2326
2327UV
1431rss (Coro::State coro) 2328rss (Coro::State coro)
1432 PROTOTYPE: $ 2329 PROTOTYPE: $
2330 ALIAS:
2331 usecount = 1
1433 CODE: 2332 CODE:
1434 RETVAL = coro_rss (coro); 2333 switch (ix)
2334 {
2335 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2336 case 1: RETVAL = coro->usecount; break;
2337 }
1435 OUTPUT: 2338 OUTPUT:
1436 RETVAL 2339 RETVAL
1437 2340
2341void
2342force_cctx ()
2343 PROTOTYPE:
2344 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0;
2347
2348void
2349swap_defsv (Coro::State self)
2350 PROTOTYPE: $
2351 ALIAS:
2352 swap_defav = 1
2353 CODE:
2354 if (!self->slot)
2355 croak ("cannot swap state with coroutine that has no saved state,");
2356 else
2357 {
2358 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360
2361 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 }
1438 2363
1439MODULE = Coro::State PACKAGE = Coro 2364MODULE = Coro::State PACKAGE = Coro
1440 2365
1441BOOT: 2366BOOT:
1442{ 2367{
1443 int i; 2368 int i;
1444 2369
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2375 SvREADONLY_on (coro_current);
2376
1445 coro_stash = gv_stashpv ("Coro", TRUE); 2377 coro_stash = gv_stashpv ("Coro", TRUE);
1446 2378
1447 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1448 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1449 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2381 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1450 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2382 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1451 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2383 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1452 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2384 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1453 2385
1454 coro_current = get_sv ("Coro::current", FALSE);
1455 SvREADONLY_on (coro_current);
1456
1457 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2386 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1458 coro_ready[i] = newAV (); 2387 coro_ready[i] = newAV ();
1459 2388
1460 { 2389 {
1461 SV *sv = perl_get_sv("Coro::API", 1); 2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1462 2391
1463 coroapi.schedule = api_schedule; 2392 coroapi.schedule = api_schedule;
1464 coroapi.save = api_save;
1465 coroapi.cede = api_cede; 2393 coroapi.cede = api_cede;
1466 coroapi.cede_notself = api_cede_notself; 2394 coroapi.cede_notself = api_cede_notself;
1467 coroapi.ready = api_ready; 2395 coroapi.ready = api_ready;
1468 coroapi.is_ready = api_is_ready; 2396 coroapi.is_ready = api_is_ready;
1469 coroapi.nready = &coro_nready; 2397 coroapi.nready = coro_nready;
1470 coroapi.current = coro_current; 2398 coroapi.current = coro_current;
1471 2399
1472 GCoroAPI = &coroapi; 2400 GCoroAPI = &coroapi;
1473 sv_setiv (sv, (IV)&coroapi); 2401 sv_setiv (sv, (IV)&coroapi);
1474 SvREADONLY_on (sv); 2402 SvREADONLY_on (sv);
1475 } 2403 }
1476} 2404}
2405
2406void
2407schedule (...)
2408 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2410
2411void
2412cede (...)
2413 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2415
2416void
2417cede_notself (...)
2418 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1477 2420
1478void 2421void
1479_set_current (SV *current) 2422_set_current (SV *current)
1480 PROTOTYPE: $ 2423 PROTOTYPE: $
1481 CODE: 2424 CODE:
1482 SvREFCNT_dec (SvRV (coro_current)); 2425 SvREFCNT_dec (SvRV (coro_current));
1483 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2426 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2427
2428void
2429_set_readyhook (SV *hook)
2430 PROTOTYPE: $
2431 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
1484 2436
1485int 2437int
1486prio (Coro::State coro, int newprio = 0) 2438prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$
1487 ALIAS: 2440 ALIAS:
1488 nice = 1 2441 nice = 1
1489 CODE: 2442 CODE:
1490{ 2443{
1491 RETVAL = coro->prio; 2444 RETVAL = coro->prio;
… …
1506 2459
1507SV * 2460SV *
1508ready (SV *self) 2461ready (SV *self)
1509 PROTOTYPE: $ 2462 PROTOTYPE: $
1510 CODE: 2463 CODE:
1511 RETVAL = boolSV (api_ready (self)); 2464 RETVAL = boolSV (api_ready (aTHX_ self));
1512 OUTPUT: 2465 OUTPUT:
1513 RETVAL 2466 RETVAL
1514 2467
1515int 2468int
1516nready (...) 2469nready (...)
… …
1518 CODE: 2471 CODE:
1519 RETVAL = coro_nready; 2472 RETVAL = coro_nready;
1520 OUTPUT: 2473 OUTPUT:
1521 RETVAL 2474 RETVAL
1522 2475
2476# for async_pool speedup
2477void
2478_pool_1 (SV *cb)
2479 CODE:
2480{
2481 struct coro *coro = SvSTATE (coro_current);
2482 HV *hv = (HV *)SvRV (coro_current);
2483 AV *defav = GvAV (PL_defgv);
2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2485 AV *invoke_av;
2486 int i, len;
2487
2488 if (!invoke)
2489 {
2490 SV *old = PL_diehook;
2491 PL_diehook = 0;
2492 SvREFCNT_dec (old);
2493 croak ("\3async_pool terminate\2\n");
2494 }
2495
2496 SvREFCNT_dec (coro->saved_deffh);
2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2498
2499 hv_store (hv, "desc", sizeof ("desc") - 1,
2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2501
2502 invoke_av = (AV *)SvRV (invoke);
2503 len = av_len (invoke_av);
2504
2505 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2506
2507 if (len > 0)
2508 {
2509 av_fill (defav, len - 1);
2510 for (i = 0; i < len; ++i)
2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2512 }
2513}
2514
2515void
2516_pool_2 (SV *cb)
2517 CODE:
2518{
2519 struct coro *coro = SvSTATE (coro_current);
2520
2521 sv_setsv (cb, &PL_sv_undef);
2522
2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2524 coro->saved_deffh = 0;
2525
2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 av_clear (GvAV (PL_defgv));
2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2538
2539 coro->prio = 0;
2540
2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2542 api_trace (aTHX_ coro_current, 0);
2543
2544 av_push (av_async_pool, newSVsv (coro_current));
2545}
2546
2547
1523MODULE = Coro::State PACKAGE = Coro::AIO 2548MODULE = Coro::State PACKAGE = Coro::AIO
1524 2549
1525SV * 2550void
1526_get_state () 2551_get_state (SV *self)
2552 PROTOTYPE: $
1527 CODE: 2553 PPCODE:
1528{ 2554{
1529 struct io_state *data; 2555 AV *defav = GvAV (PL_defgv);
1530 2556 AV *av = newAV ();
2557 int i;
1531 RETVAL = newSV (sizeof (struct io_state)); 2558 SV *data_sv = newSV (sizeof (struct io_state));
1532 data = (struct io_state *)SvPVX (RETVAL); 2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1533 SvCUR_set (RETVAL, sizeof (struct io_state)); 2560 SvCUR_set (data_sv, sizeof (struct io_state));
1534 SvPOK_only (RETVAL); 2561 SvPOK_only (data_sv);
1535 2562
1536 data->errorno = errno; 2563 data->errorno = errno;
1537 data->laststype = PL_laststype; 2564 data->laststype = PL_laststype;
1538 data->laststatval = PL_laststatval; 2565 data->laststatval = PL_laststatval;
1539 data->statcache = PL_statcache; 2566 data->statcache = PL_statcache;
2567
2568 av_extend (av, AvFILLp (defav) + 1 + 1);
2569
2570 for (i = 0; i <= AvFILLp (defav); ++i)
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2572
2573 av_push (av, data_sv);
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
1540} 2578}
1541 OUTPUT:
1542 RETVAL
1543 2579
1544void 2580void
1545_set_state (char *data_) 2581_set_state (SV *state)
1546 PROTOTYPE: $ 2582 PROTOTYPE: $
1547 CODE: 2583 PPCODE:
1548{ 2584{
1549 struct io_state *data = (void *)data_; 2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
1550 2588
1551 errno = data->errorno; 2589 errno = data->errorno;
1552 PL_laststype = data->laststype; 2590 PL_laststype = data->laststype;
1553 PL_laststatval = data->laststatval; 2591 PL_laststatval = data->laststatval;
1554 PL_statcache = data->statcache; 2592 PL_statcache = data->statcache;
1555}
1556 2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 {
2620 PUSHMARK (SP);
2621 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2623 SPAGAIN;
2624 }
2625
2626 --incede;
2627}
2628
2629
2630MODULE = Coro::State PACKAGE = PerlIO::cede
2631
2632BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634
2635MODULE = Coro::State PACKAGE = Coro::Semaphore
2636
2637SV *
2638new (SV *klass, SV *count_ = 0)
2639 CODE:
2640{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2642 AV *av = newAV ();
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2645}
2646 OUTPUT:
2647 RETVAL
2648
2649SV *
2650count (SV *self)
2651 CODE:
2652 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2653 OUTPUT:
2654 RETVAL
2655
2656void
2657up (SV *self, int adjust = 1)
2658 ALIAS:
2659 adjust = 1
2660 CODE:
2661{
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687
2688void
2689down (SV *self)
2690 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2692
2693void
2694try (SV *self)
2695 PPCODE:
2696{
2697 AV *av = (AV *)SvRV (self);
2698 SV *count_sv = AvARRAY (av)[0];
2699 IV count = SvIVX (count_sv);
2700
2701 if (count > 0)
2702 {
2703 --count;
2704 SvIVX (count_sv) = count;
2705 XSRETURN_YES;
2706 }
2707 else
2708 XSRETURN_NO;
2709}
2710
2711void
2712waiters (SV *self)
2713 CODE:
2714{
2715 AV *av = (AV *)SvRV (self);
2716
2717 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2719 else
2720 {
2721 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1);
2723 for (i = 1; i <= AvFILLp (av); ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i]));
2725 }
2726}
2727

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