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Comparing Coro/Coro/State.xs (file contents):
Revision 1.206 by root, Tue Oct 9 15:45:26 2007 UTC vs.
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#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
15 25
16#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
17# include <unistd.h> 27# include <unistd.h>
18# include <sys/mman.h> 28# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
36# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
37#endif 47#endif
38 48
39#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
44#endif 51#endif
45 52
46/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
48 55
49#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
51 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
71# ifndef IS_PADCONST 78# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
73# endif 80# endif
74#endif 81#endif
75 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
76/* 5.8.7 */ 101/* 5.8.7 */
77#ifndef SvRV_set 102#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
79#endif 104#endif
80 105
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif
88
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
91#endif 108#endif
92 109
93#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 117#endif
101 118
102/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 120 * portable way as possible. */
104#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
105#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
106 126
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
108 128
109#if __GNUC__ >= 3 129#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
113#else 133#else
114# define attribute(x) 134# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
117#endif 137#endif
118 138
119#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
121 141
122#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
123 143
124#include "CoroAPI.h" 144#include "CoroAPI.h"
125 145
126#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 147# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 149# endif
134 150#endif
135#define strpair(const) const, sizeof (const) - 1
136 151
137/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
138struct io_state 153struct io_state
139{ 154{
155 AV *res;
140 int errorno; 156 int errorno;
141 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
142 int laststatval; 158 int laststatval;
143 Stat_t statcache; 159 Stat_t statcache;
144}; 160};
145 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 168static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
152 171
153static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
155 174static SV *rv_diehook;
175static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 177
160/* async_pool helper stuff */ 178/* async_pool helper stuff */
161static SV *sv_pool_rss; 179static SV *sv_pool_rss;
162static SV *sv_pool_size; 180static SV *sv_pool_size;
163static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
164 185
165static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
167 188
168enum { 189enum {
… …
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 196};
176 197
177/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 199typedef struct coro_cctx
200{
179 struct coro_cctx *next; 201 struct coro_cctx *next;
180 202
181 /* the stack */ 203 /* the stack */
182 void *sptr; 204 void *sptr;
183 size_t ssize; 205 size_t ssize;
… …
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188 JMPENV *top_env; 210 JMPENV *top_env;
189 coro_context cctx; 211 coro_context cctx;
190 212
213 U32 gen;
191#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
192 int valgrind_id; 215 int valgrind_id;
193#endif 216#endif
194 unsigned char flags; 217 unsigned char flags;
195} coro_cctx; 218} coro_cctx;
… …
200 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
202}; 225};
203 226
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 228typedef struct
229{
206 SV *defsv; 230 SV *defsv;
207 AV *defav; 231 AV *defav;
208 SV *errsv; 232 SV *errsv;
209 SV *irsgv; 233 SV *irsgv;
210#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
214 238
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 240
217/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
218struct coro { 242struct coro {
219 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 244 coro_cctx *cctx;
221 245
222 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 248 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
225 250
226 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
227 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
228 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
230 256
231 /* statistics */ 257 /* statistics */
232 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
233 259
234 /* coro process data */ 260 /* coro process data */
… …
242 struct coro *next, *prev; 268 struct coro *next, *prev;
243}; 269};
244 270
245typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
246typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
247 279
248/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
249 281
250#define PRIO_MAX 3 282#define PRIO_MAX 3
251#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
254#define PRIO_IDLE -3 286#define PRIO_IDLE -3
255#define PRIO_MIN -4 287#define PRIO_MIN -4
256 288
257/* for Coro.pm */ 289/* for Coro.pm */
258static SV *coro_current; 290static SV *coro_current;
291static SV *coro_readyhook;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
260static int coro_nready;
261static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
262 295
263/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
264 297
265static SV * 298static SV *
266coro_get_sv (const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
267{ 300{
268#if PERL_VERSION_ATLEAST (5,9,0) 301#if PERL_VERSION_ATLEAST (5,10,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create); 303 get_sv (name, create);
271#endif 304#endif
272 return get_sv (name, create); 305 return get_sv (name, create);
273} 306}
274 307
275static AV * 308static AV *
276coro_get_av (const char *name, int create) 309coro_get_av (pTHX_ const char *name, int create)
277{ 310{
278#if PERL_VERSION_ATLEAST (5,9,0) 311#if PERL_VERSION_ATLEAST (5,10,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create); 313 get_av (name, create);
281#endif 314#endif
282 return get_av (name, create); 315 return get_av (name, create);
283} 316}
284 317
285static HV * 318static HV *
286coro_get_hv (const char *name, int create) 319coro_get_hv (pTHX_ const char *name, int create)
287{ 320{
288#if PERL_VERSION_ATLEAST (5,9,0) 321#if PERL_VERSION_ATLEAST (5,10,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create); 323 get_hv (name, create);
291#endif 324#endif
292 return get_hv (name, create); 325 return get_hv (name, create);
293} 326}
… …
298 AV *padlist = CvPADLIST (cv); 331 AV *padlist = CvPADLIST (cv);
299 AV *newpadlist, *newpad; 332 AV *newpadlist, *newpad;
300 333
301 newpadlist = newAV (); 334 newpadlist = newAV ();
302 AvREAL_off (newpadlist); 335 AvREAL_off (newpadlist);
303#if PERL_VERSION_ATLEAST (5,9,0) 336#if PERL_VERSION_ATLEAST (5,10,0)
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305#else 338#else
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307#endif 340#endif
308 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309 --AvFILLp (padlist); 342 --AvFILLp (padlist);
310 343
311 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
312 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
313 346
314 return newpadlist; 347 return newpadlist;
315} 348}
316 349
… …
346 379
347 /* casting is fun. */ 380 /* casting is fun. */
348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349 free_padlist (aTHX_ padlist); 382 free_padlist (aTHX_ padlist);
350 383
351 SvREFCNT_dec (av); 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352 385
353 return 0; 386 return 0;
354} 387}
355 388
356#define PERL_MAGIC_coro PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
357 391
358static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 392static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0,
394 coro_cv_free
395};
359 396
360#define CORO_MAGIC(cv) \ 397#define CORO_MAGIC(sv, type) \
361 SvMAGIC (cv) \ 398 expect_true (SvMAGIC (sv)) \
362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
363 ? SvMAGIC (cv) \ 400 ? SvMAGIC (sv) \
364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 401 : mg_find (sv, type) \
365 : 0 402 : 0
366 403
367static struct coro * 404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
368SvSTATE_ (pTHX_ SV *coro) 408SvSTATE_ (pTHX_ SV *coro)
369{ 409{
370 HV *stash; 410 HV *stash;
371 MAGIC *mg; 411 MAGIC *mg;
372 412
… …
382 /* very slow, but rare, check */ 422 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required"); 424 croak ("Coro::State object required");
385 } 425 }
386 426
387 mg = CORO_MAGIC (coro); 427 mg = CORO_MAGIC_state (coro);
388 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
389} 429}
390 430
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392 432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445
393/* the next two functions merely cache the padlists */ 446/* the next two functions merely cache the padlists */
394static void 447static void
395get_padlist (pTHX_ CV *cv) 448get_padlist (pTHX_ CV *cv)
396{ 449{
397 MAGIC *mg = CORO_MAGIC (cv); 450 MAGIC *mg = CORO_MAGIC_cv (cv);
398 AV *av; 451 AV *av;
399 452
400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 453 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 454 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402 else 455 else
403 { 456 {
404#if CORO_PREFER_PERL_FUNCTIONS 457#if CORO_PREFER_PERL_FUNCTIONS
405 /* this is probably cleaner, but also slower? */ 458 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */
406 CV *cp = Perl_cv_clone (cv); 460 CV *cp = Perl_cv_clone (cv);
407 CvPADLIST (cv) = CvPADLIST (cp); 461 CvPADLIST (cv) = CvPADLIST (cp);
408 CvPADLIST (cp) = 0; 462 CvPADLIST (cp) = 0;
409 SvREFCNT_dec (cp); 463 SvREFCNT_dec (cp);
410#else 464#else
… …
414} 468}
415 469
416static void 470static void
417put_padlist (pTHX_ CV *cv) 471put_padlist (pTHX_ CV *cv)
418{ 472{
419 MAGIC *mg = CORO_MAGIC (cv); 473 MAGIC *mg = CORO_MAGIC_cv (cv);
420 AV *av; 474 AV *av;
421 475
422 if (expect_false (!mg)) 476 if (expect_false (!mg))
423 { 477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
424 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
425 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
426 mg->mg_virtual = &vtbl_coro;
427 mg->mg_obj = (SV *)newAV ();
428 }
429 478
430 av = (AV *)mg->mg_obj; 479 av = (AV *)mg->mg_obj;
431 480
432 if (expect_false (AvFILLp (av) >= AvMAX (av))) 481 if (expect_false (AvFILLp (av) >= AvMAX (av)))
433 av_extend (av, AvMAX (av) + 1); 482 av_extend (av, AvMAX (av) + 1);
… …
451 GvSV (irsgv) = slot->irsgv; 500 GvSV (irsgv) = slot->irsgv;
452 501
453 #define VAR(name,type) PL_ ## name = slot->name; 502 #define VAR(name,type) PL_ ## name = slot->name;
454 # include "state.h" 503 # include "state.h"
455 #undef VAR 504 #undef VAR
456
457 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
458 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
459 505
460 { 506 {
461 dSP; 507 dSP;
462 508
463 CV *cv; 509 CV *cv;
… …
470 CvPADLIST (cv) = (AV *)POPs; 516 CvPADLIST (cv) = (AV *)POPs;
471 } 517 }
472 518
473 PUTBACK; 519 PUTBACK;
474 } 520 }
521
522 slf_frame = c->slf_frame;
523 coro_throw = c->throw;
475} 524}
476 525
477static void 526static void
478save_perl (pTHX_ Coro__State c) 527save_perl (pTHX_ Coro__State c)
479{ 528{
529 c->throw = coro_throw;
530 c->slf_frame = slf_frame;
531
480 { 532 {
481 dSP; 533 dSP;
482 I32 cxix = cxstack_ix; 534 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 535 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 536 PERL_SI *top_si = PL_curstackinfo;
… …
502 554
503 if (expect_true (CvDEPTH (cv))) 555 if (expect_true (CvDEPTH (cv)))
504 { 556 {
505 EXTEND (SP, 3); 557 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 558 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 559 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 560 PUSHs ((SV *)cv);
509 561
510 CvDEPTH (cv) = 0; 562 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 563 get_padlist (aTHX_ cv);
512 } 564 }
… …
551 #undef VAR 603 #undef VAR
552 } 604 }
553} 605}
554 606
555/* 607/*
556 * allocate various perl stacks. This is an exact copy 608 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 609 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 610 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 611 * not usually need a lot of stackspace.
560 */ 612 */
561#if CORO_PREFER_PERL_FUNCTIONS 613#if CORO_PREFER_PERL_FUNCTIONS
… …
592 644
593 New(54,PL_savestack,24,ANY); 645 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 646 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 647 PL_savestack_max = 24;
596 648
597#if !PERL_VERSION_ATLEAST (5,9,0) 649#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 650 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 651 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 652 PL_retstack_max = 4;
601#endif 653#endif
602} 654}
… …
604 656
605/* 657/*
606 * destroy the stacks, the callchain etc... 658 * destroy the stacks, the callchain etc...
607 */ 659 */
608static void 660static void
609coro_destroy_stacks (pTHX) 661coro_destruct_stacks (pTHX)
610{ 662{
611 while (PL_curstackinfo->si_next) 663 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 664 PL_curstackinfo = PL_curstackinfo->si_next;
613 665
614 while (PL_curstackinfo) 666 while (PL_curstackinfo)
… …
625 677
626 Safefree (PL_tmps_stack); 678 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 679 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 680 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 681 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 682#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 683 Safefree (PL_retstack);
632#endif 684#endif
633} 685}
634 686
635static size_t 687static size_t
… …
651 #undef VAR 703 #undef VAR
652 } 704 }
653 else 705 else
654 slot = coro->slot; 706 slot = coro->slot;
655 707
708 if (slot)
709 {
656 rss += sizeof (slot->curstackinfo); 710 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 713 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 715 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 716 rss += slot->savestack_max * sizeof (ANY);
663 717
664#if !PERL_VERSION_ATLEAST (5,9,0) 718#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 719 rss += slot->retstack_max * sizeof (OP *);
666#endif 720#endif
721 }
667 } 722 }
668 723
669 return rss; 724 return rss;
670} 725}
671 726
672/** coroutine stack handling ************************************************/ 727/** coroutine stack handling ************************************************/
673 728
729static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
730static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
731static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
732
733/* apparently < 5.8.8 */
734#ifndef MgPV_nolen_const
735#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
736 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
737 (const char*)(mg)->mg_ptr)
738#endif
739
740/*
741 * This overrides the default magic get method of %SIG elements.
742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
743 * and instead of tryign to save and restore the hash elements, we just provide
744 * readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */
674static void 749static int
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{
752 const char *s = MgPV_nolen_const (mg);
753
754 if (*s == '_')
755 {
756 SV **svp = 0;
757
758 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
759 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
760
761 if (svp)
762 {
763 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
764 return 0;
765 }
766 }
767
768 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
769}
770
771static int
772coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
773{
774 const char *s = MgPV_nolen_const (mg);
775
776 if (*s == '_')
777 {
778 SV **svp = 0;
779
780 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
781 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
782
783 if (svp)
784 {
785 SV *old = *svp;
786 *svp = 0;
787 SvREFCNT_dec (old);
788 return 0;
789 }
790 }
791
792 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
793}
794
795static int
796coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
797{
798 const char *s = MgPV_nolen_const (mg);
799
800 if (*s == '_')
801 {
802 SV **svp = 0;
803
804 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806
807 if (svp)
808 {
809 SV *old = *svp;
810 *svp = newSVsv (sv);
811 SvREFCNT_dec (old);
812 return 0;
813 }
814 }
815
816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
817}
818
819static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{
822 /* kind of mega-hacky, but works */
823 ta->next = ta->prev = (struct coro *)ta;
824}
825
826static int
827slf_check_nop (pTHX_ struct CoroSLF *frame)
828{
829 return 0;
830}
831
832static void NOINLINE /* noinline to keep it out of the transfer fast path */
675coro_setup (pTHX_ struct coro *coro) 833coro_setup (pTHX_ struct coro *coro)
676{ 834{
677 /* 835 /*
678 * emulate part of the perl startup here. 836 * emulate part of the perl startup here.
679 */ 837 */
… …
686 PL_curpm = 0; 844 PL_curpm = 0;
687 PL_curpad = 0; 845 PL_curpad = 0;
688 PL_localizing = 0; 846 PL_localizing = 0;
689 PL_dirty = 0; 847 PL_dirty = 0;
690 PL_restartop = 0; 848 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 849#if PERL_VERSION_ATLEAST (5,10,0)
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 850 PL_parser = 0;
851#endif
852
853 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
693 856
694 GvSV (PL_defgv) = newSV (0); 857 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0; 858 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0); 859 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
698 PL_rs = newSVsv (GvSV (irsgv)); 861 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700 863
701 { 864 {
702 dSP; 865 dSP;
703 LOGOP myop; 866 UNOP myop;
704 867
705 Zero (&myop, 1, LOGOP); 868 Zero (&myop, 1, UNOP);
706 myop.op_next = Nullop; 869 myop.op_next = Nullop;
707 myop.op_flags = OPf_WANT_VOID; 870 myop.op_flags = OPf_WANT_VOID;
708 871
709 PUSHMARK (SP); 872 PUSHMARK (SP);
710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
712 PL_op = (OP *)&myop; 875 PL_op = (OP *)&myop;
713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714 SPAGAIN; 877 SPAGAIN;
715 } 878 }
716 879
717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 880 /* this newly created coroutine might be run on an existing cctx which most
718} 881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
719 885
886 coro_throw = coro->throw;
887}
888
720static void 889static void
721coro_destroy (pTHX_ struct coro *coro) 890coro_destruct (pTHX_ struct coro *coro)
722{ 891{
723 if (!IN_DESTRUCT) 892 if (!IN_DESTRUCT)
724 { 893 {
725 /* restore all saved variables and stuff */ 894 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0); 895 LEAVE_SCOPE (0);
… …
746 915
747 SvREFCNT_dec (PL_diehook); 916 SvREFCNT_dec (PL_diehook);
748 SvREFCNT_dec (PL_warnhook); 917 SvREFCNT_dec (PL_warnhook);
749 918
750 SvREFCNT_dec (coro->saved_deffh); 919 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw); 920 SvREFCNT_dec (coro_throw);
752 921
753 coro_destroy_stacks (aTHX); 922 coro_destruct_stacks (aTHX);
754} 923}
755 924
756static void 925INLINE void
757free_coro_mortal (pTHX) 926free_coro_mortal (pTHX)
758{ 927{
759 if (expect_true (coro_mortal)) 928 if (expect_true (coro_mortal))
760 { 929 {
761 SvREFCNT_dec (coro_mortal); 930 SvREFCNT_dec (coro_mortal);
… …
766static int 935static int
767runops_trace (pTHX) 936runops_trace (pTHX)
768{ 937{
769 COP *oldcop = 0; 938 COP *oldcop = 0;
770 int oldcxix = -2; 939 int oldcxix = -2;
771 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
772 coro_cctx *cctx = coro->cctx; 941 coro_cctx *cctx = coro->cctx;
773 942
774 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
775 { 944 {
776 PERL_ASYNC_CHECK (); 945 PERL_ASYNC_CHECK ();
… …
795 : cx->blk_gimme == G_SCALAR ? bot + 1 964 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot; 965 : bot;
797 966
798 av_extend (av, top - bot); 967 av_extend (av, top - bot);
799 while (bot < top) 968 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++)); 969 av_push (av, SvREFCNT_inc_NN (*bot++));
801 970
802 PL_runops = RUNOPS_DEFAULT; 971 PL_runops = RUNOPS_DEFAULT;
803 ENTER; 972 ENTER;
804 SAVETMPS; 973 SAVETMPS;
805 EXTEND (SP, 3); 974 EXTEND (SP, 3);
806 PUSHMARK (SP); 975 PUSHMARK (SP);
807 PUSHs (&PL_sv_no); 976 PUSHs (&PL_sv_no);
808 PUSHs (fullname); 977 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 978 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK; 979 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 980 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
812 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 981 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN; 982 SPAGAIN;
814 FREETMPS; 983 FREETMPS;
815 LEAVE; 984 LEAVE;
816 PL_runops = runops_trace; 985 PL_runops = runops_trace;
… …
843 SAVETMPS; 1012 SAVETMPS;
844 EXTEND (SP, 3); 1013 EXTEND (SP, 3);
845 PUSHMARK (SP); 1014 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes); 1015 PUSHs (&PL_sv_yes);
847 PUSHs (fullname); 1016 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK; 1018 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
851 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN; 1021 SPAGAIN;
853 FREETMPS; 1022 FREETMPS;
854 LEAVE; 1023 LEAVE;
855 PL_runops = runops_trace; 1024 PL_runops = runops_trace;
… …
869 PL_runops = RUNOPS_DEFAULT; 1038 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP); 1039 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1040 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1041 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK; 1042 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1043 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
875 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1044 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN; 1045 SPAGAIN;
877 FREETMPS; 1046 FREETMPS;
878 LEAVE; 1047 LEAVE;
879 PL_runops = runops_trace; 1048 PL_runops = runops_trace;
… …
885 1054
886 TAINT_NOT; 1055 TAINT_NOT;
887 return 0; 1056 return 0;
888} 1057}
889 1058
1059static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1061{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0;
1064}
1065
890/* inject a fake call to Coro::State::_cctx_init into the execution */ 1066/* inject a fake call to Coro::State::_cctx_init into the execution */
891/* _cctx_init should be careful, as it could be called at almost any time */ 1067/* _cctx_init should be careful, as it could be called at almost any time */
892/* during execution of a perl program */ 1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
893static void NOINLINE 1070static void NOINLINE
894cctx_prepare (pTHX_ coro_cctx *cctx) 1071cctx_prepare (pTHX_ coro_cctx *cctx)
895{ 1072{
896 dSP; 1073 dSP;
897 LOGOP myop; 1074 UNOP myop;
898 1075
899 PL_top_env = &PL_start_env; 1076 PL_top_env = &PL_start_env;
900 1077
901 if (cctx->flags & CC_TRACE) 1078 if (cctx->flags & CC_TRACE)
902 PL_runops = runops_trace; 1079 PL_runops = runops_trace;
903 1080
904 Zero (&myop, 1, LOGOP); 1081 Zero (&myop, 1, UNOP);
905 myop.op_next = PL_op; 1082 myop.op_next = PL_op;
906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
907 1084
908 PUSHMARK (SP); 1085 PUSHMARK (SP);
909 EXTEND (SP, 2); 1086 EXTEND (SP, 2);
910 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1087 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
911 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
912 PUTBACK; 1089 PUTBACK;
913 PL_op = (OP *)&myop; 1090 PL_op = (OP *)&myop;
914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
915 SPAGAIN; 1092 SPAGAIN;
916} 1093}
917 1094
1095/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void
1097transfer_tail (pTHX)
1098{
1099 free_coro_mortal (aTHX);
1100}
1101
918/* 1102/*
919 * this is a _very_ stripped down perl interpreter ;) 1103 * this is a _very_ stripped down perl interpreter ;)
920 */ 1104 */
921static void 1105static void
922cctx_run (void *arg) 1106cctx_run (void *arg)
923{ 1107{
1108#ifdef USE_ITHREADS
1109# if CORO_PTHREAD
1110 PERL_SET_CONTEXT (coro_thx);
1111# endif
1112#endif
1113 {
924 dTHX; 1114 dTHX;
925 1115
926 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1116 /* normally we would need to skip the entersub here */
927 UNLOCK; 1117 /* not doing so will re-execute it, which is exactly what we want */
928
929 /* we now skip the entersub that lead to transfer() */
930 PL_op = PL_op->op_next; 1118 /* PL_nop = PL_nop->op_next */
931 1119
932 /* inject a fake subroutine call to cctx_init */ 1120 /* inject a fake subroutine call to cctx_init */
933 cctx_prepare (aTHX_ (coro_cctx *)arg); 1121 cctx_prepare (aTHX_ (coro_cctx *)arg);
934 1122
1123 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX);
1125
935 /* somebody or something will hit me for both perl_run and PL_restartop */ 1126 /* somebody or something will hit me for both perl_run and PL_restartop */
936 PL_restartop = PL_op; 1127 PL_restartop = PL_op;
937 perl_run (PL_curinterp); 1128 perl_run (PL_curinterp);
938 1129
939 /* 1130 /*
940 * If perl-run returns we assume exit() was being called or the coro 1131 * If perl-run returns we assume exit() was being called or the coro
941 * fell off the end, which seems to be the only valid (non-bug) 1132 * fell off the end, which seems to be the only valid (non-bug)
942 * reason for perl_run to return. We try to exit by jumping to the 1133 * reason for perl_run to return. We try to exit by jumping to the
943 * bootstrap-time "top" top_env, as we cannot restore the "main" 1134 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1135 * coroutine as Coro has no such concept
945 */ 1136 */
946 PL_top_env = main_top_env; 1137 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 }
948} 1140}
949 1141
950static coro_cctx * 1142static coro_cctx *
951cctx_new () 1143cctx_new ()
952{ 1144{
953 coro_cctx *cctx; 1145 coro_cctx *cctx;
1146
1147 ++cctx_count;
1148 New (0, cctx, 1, coro_cctx);
1149
1150 cctx->gen = cctx_gen;
1151 cctx->flags = 0;
1152 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1153
1154 return cctx;
1155}
1156
1157/* create a new cctx only suitable as source */
1158static coro_cctx *
1159cctx_new_empty ()
1160{
1161 coro_cctx *cctx = cctx_new ();
1162
1163 cctx->sptr = 0;
1164 coro_create (&cctx->cctx, 0, 0, 0, 0);
1165
1166 return cctx;
1167}
1168
1169/* create a new cctx suitable as destination/running a perl interpreter */
1170static coro_cctx *
1171cctx_new_run ()
1172{
1173 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1174 void *stack_start;
955 size_t stack_size; 1175 size_t stack_size;
956 1176
957 ++cctx_count;
958
959 Newz (0, cctx, 1, coro_cctx);
960
961#if HAVE_MMAP 1177#if HAVE_MMAP
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1178 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1179 /* mmap supposedly does allocate-on-write for us */
964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965 1181
966 if (cctx->sptr != (void *)-1) 1182 if (cctx->sptr != (void *)-1)
967 { 1183 {
968# if CORO_STACKGUARD 1184 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1186 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1189 cctx->flags |= CC_MAPPED;
974 } 1190 }
975 else 1191 else
976#endif 1192#endif
977 { 1193 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1195 New (0, cctx->sptr, cctx_stacksize, long);
980 1196
981 if (!cctx->sptr) 1197 if (!cctx->sptr)
982 { 1198 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1199 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1200 _exit (EXIT_FAILURE);
985 } 1201 }
986 1202
987 stack_start = cctx->sptr; 1203 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1204 stack_size = cctx->ssize;
989 } 1205 }
990 1206
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
992 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1212
994 return cctx; 1213 return cctx;
995} 1214}
996 1215
… …
999{ 1218{
1000 if (!cctx) 1219 if (!cctx)
1001 return; 1220 return;
1002 1221
1003 --cctx_count; 1222 --cctx_count;
1223 coro_destroy (&cctx->cctx);
1004 1224
1225 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr)
1227 {
1005#if CORO_USE_VALGRIND 1228 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007#endif 1230 #endif
1008 1231
1009#if HAVE_MMAP 1232#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED) 1233 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize); 1234 munmap (cctx->sptr, cctx->ssize);
1012 else 1235 else
1013#endif 1236#endif
1014 Safefree (cctx->sptr); 1237 Safefree (cctx->sptr);
1238 }
1015 1239
1016 Safefree (cctx); 1240 Safefree (cctx);
1017} 1241}
1018 1242
1019/* wether this cctx should be destructed */ 1243/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1245
1022static coro_cctx * 1246static coro_cctx *
1023cctx_get (pTHX) 1247cctx_get (pTHX)
1024{ 1248{
1025 while (expect_true (cctx_first)) 1249 while (expect_true (cctx_first))
… …
1032 return cctx; 1256 return cctx;
1033 1257
1034 cctx_destroy (cctx); 1258 cctx_destroy (cctx);
1035 } 1259 }
1036 1260
1037 return cctx_new (); 1261 return cctx_new_run ();
1038} 1262}
1039 1263
1040static void 1264static void
1041cctx_put (coro_cctx *cctx) 1265cctx_put (coro_cctx *cctx)
1042{ 1266{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1268
1043 /* free another cctx if overlimit */ 1269 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1270 if (expect_false (cctx_idle >= cctx_max_idle))
1045 { 1271 {
1046 coro_cctx *first = cctx_first; 1272 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1273 cctx_first = first->next;
1048 --cctx_idle; 1274 --cctx_idle;
1049 1275
… …
1058/** coroutine switching *****************************************************/ 1284/** coroutine switching *****************************************************/
1059 1285
1060static void 1286static void
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1287transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1288{
1289 /* TODO: throwing up here is considered harmful */
1290
1063 if (expect_true (prev != next)) 1291 if (expect_true (prev != next))
1064 { 1292 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1066 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1067 1295
1068 if (expect_false (next->flags & CF_RUNNING)) 1296 if (expect_false (next->flags & CF_RUNNING))
1069 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1070 1298
1071 if (expect_false (next->flags & CF_DESTROYED)) 1299 if (expect_false (next->flags & CF_DESTROYED))
1072 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1073 1301
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1302#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1303 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif
1082 } 1306 }
1083} 1307}
1084 1308
1085/* always use the TRANSFER macro */ 1309/* always use the TRANSFER macro */
1086static void NOINLINE 1310static void NOINLINE /* noinline so we have a fixed stackframe */
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1312{
1089 dSTACKLEVEL; 1313 dSTACKLEVEL;
1090 1314
1091 /* sometimes transfer is only called to set idle_sp */ 1315 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1316 if (expect_false (!next))
1093 { 1317 {
1094 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096 } 1320 }
1097 else if (expect_true (prev != next)) 1321 else if (expect_true (prev != next))
1098 { 1322 {
1099 coro_cctx *prev__cctx; 1323 coro_cctx *prev__cctx;
1100 1324
1101 if (expect_false (prev->flags & CF_NEW)) 1325 if (expect_false (prev->flags & CF_NEW))
1102 { 1326 {
1103 /* create a new empty context */ 1327 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx); 1328 prev->cctx = cctx_new_empty ();
1105 prev->flags &= ~CF_NEW; 1329 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1330 prev->flags |= CF_RUNNING;
1107 } 1331 }
1108 1332
1109 prev->flags &= ~CF_RUNNING; 1333 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1334 next->flags |= CF_RUNNING;
1111 1335
1112 LOCK; 1336 /* first get rid of the old state */
1337 save_perl (aTHX_ prev);
1113 1338
1114 if (expect_false (next->flags & CF_NEW)) 1339 if (expect_false (next->flags & CF_NEW))
1115 { 1340 {
1116 /* need to start coroutine */ 1341 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1342 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1343 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1344 coro_setup (aTHX_ next);
1122 } 1345 }
1123 else 1346 else
1347 load_perl (aTHX_ next);
1348
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */
1352 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel
1354 && !(prev__cctx->flags & CC_TRACE)
1355 && !force_cctx
1356 ))
1124 { 1357 {
1125 /* coroutine already started */
1126 save_perl (aTHX_ prev);
1127 load_perl (aTHX_ next);
1128 }
1129
1130 prev__cctx = prev->cctx;
1131
1132 /* possibly "free" the cctx */
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1134 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1137 1360
1138 prev->cctx = 0; 1361 prev->cctx = 0;
1139 1362
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1156 prev__cctx->top_env = PL_top_env; 1379 prev__cctx->top_env = PL_top_env;
1157 PL_top_env = next->cctx->top_env; 1380 PL_top_env = next->cctx->top_env;
1158 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1159 } 1382 }
1160 1383
1161 free_coro_mortal (aTHX); 1384 transfer_tail (aTHX);
1162 UNLOCK;
1163
1164 if (expect_false (prev->throw || next->throw))
1165 {
1166 struct coro *coro = SvSTATE (coro_current);
1167
1168 if (coro->throw)
1169 {
1170 SV *exception = coro->throw;
1171 coro->throw = 0;
1172 sv_setsv (ERRSV, exception);
1173 croak (0);
1174 }
1175 }
1176 } 1385 }
1177} 1386}
1178 1387
1179struct transfer_args
1180{
1181 struct coro *prev, *next;
1182};
1183
1184#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1185#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1186 1390
1187/** high level stuff ********************************************************/ 1391/** high level stuff ********************************************************/
1188 1392
1189static int 1393static int
1190coro_state_destroy (pTHX_ struct coro *coro) 1394coro_state_destroy (pTHX_ struct coro *coro)
1191{ 1395{
1192 if (coro->flags & CF_DESTROYED) 1396 if (coro->flags & CF_DESTROYED)
1193 return 0; 1397 return 0;
1398
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro);
1194 1401
1195 coro->flags |= CF_DESTROYED; 1402 coro->flags |= CF_DESTROYED;
1196 1403
1197 if (coro->flags & CF_READY) 1404 if (coro->flags & CF_READY)
1198 { 1405 {
1199 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1406 /* reduce nready, as destroying a ready coro effectively unreadies it */
1200 /* alternative: look through all ready queues and remove the coro */ 1407 /* alternative: look through all ready queues and remove the coro */
1201 LOCK;
1202 --coro_nready; 1408 --coro_nready;
1203 UNLOCK;
1204 } 1409 }
1205 else 1410 else
1206 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1207 1412
1208 if (coro->mainstack && coro->mainstack != main_mainstack) 1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1209 { 1414 {
1210 struct coro temp; 1415 struct coro temp;
1211 1416
1212 if (coro->flags & CF_RUNNING) 1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1213 croak ("FATAL: tried to destroy currently running coroutine");
1214 1418
1215 save_perl (aTHX_ &temp); 1419 save_perl (aTHX_ &temp);
1216 load_perl (aTHX_ coro); 1420 load_perl (aTHX_ coro);
1217 1421
1218 coro_destroy (aTHX_ coro); 1422 coro_destruct (aTHX_ coro);
1219 1423
1220 load_perl (aTHX_ &temp); 1424 load_perl (aTHX_ &temp);
1221 1425
1222 coro->slot = 0; 1426 coro->slot = 0;
1223 } 1427 }
… …
1269# define MGf_DUP 0 1473# define MGf_DUP 0
1270#endif 1474#endif
1271}; 1475};
1272 1476
1273static void 1477static void
1274prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1478prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1275{ 1479{
1276 ta->prev = SvSTATE (prev_sv); 1480 ta->prev = SvSTATE (prev_sv);
1277 ta->next = SvSTATE (next_sv); 1481 ta->next = SvSTATE (next_sv);
1278 TRANSFER_CHECK (*ta); 1482 TRANSFER_CHECK (*ta);
1279} 1483}
1280 1484
1281static void 1485static void
1282api_transfer (SV *prev_sv, SV *next_sv) 1486api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1283{ 1487{
1284 dTHX;
1285 struct transfer_args ta; 1488 struct coro_transfer_args ta;
1286 1489
1287 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1288 TRANSFER (ta); 1491 TRANSFER (ta, 1);
1289} 1492}
1290 1493
1291/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
1292 1495
1293static void 1496INLINE void
1294coro_enq (pTHX_ SV *coro_sv) 1497coro_enq (pTHX_ struct coro *coro)
1295{ 1498{
1296 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1297} 1500}
1298 1501
1299static SV * 1502INLINE SV *
1300coro_deq (pTHX_ int min_prio) 1503coro_deq (pTHX)
1301{ 1504{
1302 int prio = PRIO_MAX - PRIO_MIN; 1505 int prio;
1303 1506
1304 min_prio -= PRIO_MIN;
1305 if (min_prio < 0)
1306 min_prio = 0;
1307
1308 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1309 if (AvFILLp (coro_ready [prio]) >= 0) 1508 if (AvFILLp (coro_ready [prio]) >= 0)
1310 return av_shift (coro_ready [prio]); 1509 return av_shift (coro_ready [prio]);
1311 1510
1312 return 0; 1511 return 0;
1313} 1512}
1314 1513
1315static int 1514static int
1316api_ready (SV *coro_sv) 1515api_ready (pTHX_ SV *coro_sv)
1317{ 1516{
1318 dTHX;
1319 struct coro *coro; 1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1320 1520
1321 if (SvROK (coro_sv)) 1521 if (SvROK (coro_sv))
1322 coro_sv = SvRV (coro_sv); 1522 coro_sv = SvRV (coro_sv);
1323 1523
1324 coro = SvSTATE (coro_sv); 1524 coro = SvSTATE (coro_sv);
… …
1326 if (coro->flags & CF_READY) 1526 if (coro->flags & CF_READY)
1327 return 0; 1527 return 0;
1328 1528
1329 coro->flags |= CF_READY; 1529 coro->flags |= CF_READY;
1330 1530
1331 LOCK; 1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1332 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro);
1333 ++coro_nready; 1535 ++coro_nready;
1334 UNLOCK; 1536
1537 if (sv_hook)
1538 {
1539 dSP;
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1335 1555
1336 return 1; 1556 return 1;
1337} 1557}
1338 1558
1339static int 1559static int
1340api_is_ready (SV *coro_sv) 1560api_is_ready (pTHX_ SV *coro_sv)
1341{ 1561{
1342 dTHX;
1343 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1562 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1344} 1563}
1345 1564
1346static void 1565INLINE void
1347prepare_schedule (pTHX_ struct transfer_args *ta) 1566prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1348{ 1567{
1349 SV *prev_sv, *next_sv; 1568 SV *prev_sv, *next_sv;
1350 1569
1351 for (;;) 1570 for (;;)
1352 { 1571 {
1353 LOCK;
1354 next_sv = coro_deq (aTHX_ PRIO_MIN); 1572 next_sv = coro_deq (aTHX);
1355 1573
1356 /* nothing to schedule: call the idle handler */ 1574 /* nothing to schedule: call the idle handler */
1357 if (expect_false (!next_sv)) 1575 if (expect_false (!next_sv))
1358 { 1576 {
1359 dSP; 1577 dSP;
1360 UNLOCK;
1361 1578
1362 ENTER; 1579 ENTER;
1363 SAVETMPS; 1580 SAVETMPS;
1364 1581
1365 PUSHMARK (SP); 1582 PUSHMARK (SP);
1366 PUTBACK; 1583 PUTBACK;
1367 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1368 1586
1369 FREETMPS; 1587 FREETMPS;
1370 LEAVE; 1588 LEAVE;
1371 continue; 1589 continue;
1372 } 1590 }
1373 1591
1374 ta->next = SvSTATE (next_sv); 1592 ta->next = SvSTATE_hv (next_sv);
1375 1593
1376 /* cannot transfer to destroyed coros, skip and look for next */ 1594 /* cannot transfer to destroyed coros, skip and look for next */
1377 if (expect_false (ta->next->flags & CF_DESTROYED)) 1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1378 { 1596 {
1379 UNLOCK;
1380 SvREFCNT_dec (next_sv); 1597 SvREFCNT_dec (next_sv);
1381 /* coro_nready is already taken care of by destroy */ 1598 /* coro_nready has already been taken care of by destroy */
1382 continue; 1599 continue;
1383 } 1600 }
1384 1601
1385 --coro_nready; 1602 --coro_nready;
1386 UNLOCK;
1387 break; 1603 break;
1388 } 1604 }
1389 1605
1390 /* free this only after the transfer */ 1606 /* free this only after the transfer */
1391 prev_sv = SvRV (coro_current); 1607 prev_sv = SvRV (coro_current);
1392 ta->prev = SvSTATE (prev_sv); 1608 ta->prev = SvSTATE_hv (prev_sv);
1393 TRANSFER_CHECK (*ta); 1609 TRANSFER_CHECK (*ta);
1394 assert (ta->next->flags & CF_READY); 1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1395 ta->next->flags &= ~CF_READY; 1611 ta->next->flags &= ~CF_READY;
1396 SvRV_set (coro_current, next_sv); 1612 SvRV_set (coro_current, next_sv);
1397 1613
1398 LOCK;
1399 free_coro_mortal (aTHX); 1614 free_coro_mortal (aTHX);
1400 coro_mortal = prev_sv; 1615 coro_mortal = prev_sv;
1401 UNLOCK;
1402} 1616}
1403 1617
1404static void 1618INLINE void
1405prepare_cede (pTHX_ struct transfer_args *ta) 1619prepare_cede (pTHX_ struct coro_transfer_args *ta)
1406{ 1620{
1407 api_ready (coro_current); 1621 api_ready (aTHX_ coro_current);
1408 prepare_schedule (aTHX_ ta); 1622 prepare_schedule (aTHX_ ta);
1409} 1623}
1410 1624
1625INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{
1628 SV *prev = SvRV (coro_current);
1629
1630 if (coro_nready)
1631 {
1632 prepare_schedule (aTHX_ ta);
1633 api_ready (aTHX_ prev);
1634 }
1635 else
1636 prepare_nop (aTHX_ ta);
1637}
1638
1639static void
1640api_schedule (pTHX)
1641{
1642 struct coro_transfer_args ta;
1643
1644 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1);
1646}
1647
1411static int 1648static int
1412prepare_cede_notself (pTHX_ struct transfer_args *ta) 1649api_cede (pTHX)
1413{ 1650{
1414 if (coro_nready) 1651 struct coro_transfer_args ta;
1415 { 1652
1416 SV *prev = SvRV (coro_current);
1417 prepare_schedule (aTHX_ ta); 1653 prepare_cede (aTHX_ &ta);
1418 api_ready (prev); 1654
1655 if (expect_true (ta.prev != ta.next))
1656 {
1657 TRANSFER (ta, 1);
1419 return 1; 1658 return 1;
1420 } 1659 }
1421 else 1660 else
1422 return 0; 1661 return 0;
1423} 1662}
1424 1663
1425static void
1426api_schedule (void)
1427{
1428 dTHX;
1429 struct transfer_args ta;
1430
1431 prepare_schedule (aTHX_ &ta);
1432 TRANSFER (ta);
1433}
1434
1435static int 1664static int
1436api_cede (void) 1665api_cede_notself (pTHX)
1437{ 1666{
1438 dTHX; 1667 if (coro_nready)
1668 {
1439 struct transfer_args ta; 1669 struct coro_transfer_args ta;
1440 1670
1441 prepare_cede (aTHX_ &ta); 1671 prepare_cede_notself (aTHX_ &ta);
1442
1443 if (expect_true (ta.prev != ta.next))
1444 {
1445 TRANSFER (ta); 1672 TRANSFER (ta, 1);
1446 return 1; 1673 return 1;
1447 } 1674 }
1448 else 1675 else
1449 return 0; 1676 return 0;
1450} 1677}
1451 1678
1452static int 1679static void
1453api_cede_notself (void)
1454{
1455 dTHX;
1456 struct transfer_args ta;
1457
1458 if (prepare_cede_notself (aTHX_ &ta))
1459 {
1460 TRANSFER (ta);
1461 return 1;
1462 }
1463 else
1464 return 0;
1465}
1466
1467static void
1468api_trace (SV *coro_sv, int flags) 1680api_trace (pTHX_ SV *coro_sv, int flags)
1469{ 1681{
1470 dTHX;
1471 struct coro *coro = SvSTATE (coro_sv); 1682 struct coro *coro = SvSTATE (coro_sv);
1472 1683
1473 if (flags & CC_TRACE) 1684 if (flags & CC_TRACE)
1474 { 1685 {
1475 if (!coro->cctx) 1686 if (!coro->cctx)
1476 coro->cctx = cctx_new (); 1687 coro->cctx = cctx_new_run ();
1477 else if (!(coro->cctx->flags & CC_TRACE)) 1688 else if (!(coro->cctx->flags & CC_TRACE))
1478 croak ("cannot enable tracing on coroutine with custom stack"); 1689 croak ("cannot enable tracing on coroutine with custom stack,");
1479 1690
1480 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481 } 1692 }
1482 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1483 { 1694 {
… …
1488 else 1699 else
1489 coro->slot->runops = RUNOPS_DEFAULT; 1700 coro->slot->runops = RUNOPS_DEFAULT;
1490 } 1701 }
1491} 1702}
1492 1703
1704/*****************************************************************************/
1705/* PerlIO::cede */
1706
1707typedef struct
1708{
1709 PerlIOBuf base;
1710 NV next, every;
1711} PerlIOCede;
1712
1713static IV
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every;
1720
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722}
1723
1724static SV *
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728
1729 return newSVnv (self->every);
1730}
1731
1732static IV
1733PerlIOCede_flush (pTHX_ PerlIO *f)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736 double now = nvtime ();
1737
1738 if (now >= self->next)
1739 {
1740 api_cede (aTHX);
1741 self->next = now + self->every;
1742 }
1743
1744 return PerlIOBuf_flush (aTHX_ f);
1745}
1746
1747static PerlIO_funcs PerlIO_cede =
1748{
1749 sizeof(PerlIO_funcs),
1750 "cede",
1751 sizeof(PerlIOCede),
1752 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1753 PerlIOCede_pushed,
1754 PerlIOBuf_popped,
1755 PerlIOBuf_open,
1756 PerlIOBase_binmode,
1757 PerlIOCede_getarg,
1758 PerlIOBase_fileno,
1759 PerlIOBuf_dup,
1760 PerlIOBuf_read,
1761 PerlIOBuf_unread,
1762 PerlIOBuf_write,
1763 PerlIOBuf_seek,
1764 PerlIOBuf_tell,
1765 PerlIOBuf_close,
1766 PerlIOCede_flush,
1767 PerlIOBuf_fill,
1768 PerlIOBase_eof,
1769 PerlIOBase_error,
1770 PerlIOBase_clearerr,
1771 PerlIOBase_setlinebuf,
1772 PerlIOBuf_get_base,
1773 PerlIOBuf_bufsiz,
1774 PerlIOBuf_get_ptr,
1775 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt,
1777};
1778
1779/*****************************************************************************/
1780
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP *
1791pp_restore (pTHX)
1792{
1793 int i;
1794 SV **SP = PL_stack_base + slf_ax;
1795
1796 PUSHMARK (SP);
1797
1798 EXTEND (SP, slf_argc + 1);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806}
1807
1808static void
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006
2007static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{
2010 SV *count_sv = AvARRAY (av)[0];
2011 IV count = SvIVX (count_sv);
2012
2013 count += adjust;
2014 SvIVX (count_sv) = count;
2015
2016 /* now wake up as many waiters as are expected to lock */
2017 while (count > 0 && AvFILLp (av) > 0)
2018 {
2019 SV *cb;
2020
2021 /* swap first two elements so we can shift a waiter */
2022 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av);
2025
2026 if (SvOBJECT (cb))
2027 api_ready (aTHX_ cb);
2028 else
2029 croak ("callbacks not yet supported");
2030
2031 SvREFCNT_dec (cb);
2032
2033 --count;
2034 }
2035}
2036
2037static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2039{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042}
2043
2044static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2046{
2047 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0];
2049
2050 if (SvIVX (count_sv) > 0)
2051 {
2052 SvSTATE_current->on_destroy = 0;
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2054 return 0;
2055 }
2056 else
2057 {
2058 int i;
2059 /* if we were woken up but can't down, we look through the whole */
2060 /* waiters list and only add us if we aren't in there already */
2061 /* this avoids some degenerate memory usage cases */
2062
2063 for (i = 1; i <= AvFILLp (av); ++i)
2064 if (AvARRAY (av)[i] == SvRV (coro_current))
2065 return 1;
2066
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1;
2069 }
2070}
2071
2072static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 AV *av = (AV *)SvRV (arg [0]);
2076
2077 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 {
2079 frame->data = (void *)av;
2080 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 }
2083 else
2084 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 }
2095
2096 frame->check = slf_check_semaphore_down;
2097
2098}
2099
2100/*****************************************************************************/
2101
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2103
2104/* create a closure from XS, returns a code reference */
2105/* the arg can be accessed via GENSUB_ARG from the callback */
2106/* the callback must use dXSARGS/XSRETURN */
2107static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2109{
2110 CV *cv = (CV *)NEWSV (0, 0);
2111
2112 sv_upgrade ((SV *)cv, SVt_PVCV);
2113
2114 CvANON_on (cv);
2115 CvISXSUB_on (cv);
2116 CvXSUB (cv) = xsub;
2117 GENSUB_ARG = arg;
2118
2119 return newRV_noinc ((SV *)cv);
2120}
2121
2122/*****************************************************************************/
2123
1493MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1494 2125
1495PROTOTYPES: DISABLE 2126PROTOTYPES: DISABLE
1496 2127
1497BOOT: 2128BOOT:
1498{ 2129{
1499#ifdef USE_ITHREADS 2130#ifdef USE_ITHREADS
1500 MUTEX_INIT (&coro_mutex); 2131# if CORO_PTHREAD
2132 coro_thx = PERL_GET_CONTEXT;
2133# endif
1501#endif 2134#endif
1502 BOOT_PAGESIZE; 2135 BOOT_PAGESIZE;
1503 2136
1504 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506 2139
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2142 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2143
1507 hv_sig = coro_get_hv ("SIG", TRUE); 2144 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1508 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2145 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1509 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2146 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1510
1511 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1512 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1513 2147
1514 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2148 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1515 2149
1516 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2150 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2151 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1522 main_top_env = PL_top_env; 2156 main_top_env = PL_top_env;
1523 2157
1524 while (main_top_env->je_prev) 2158 while (main_top_env->je_prev)
1525 main_top_env = main_top_env->je_prev; 2159 main_top_env = main_top_env->je_prev;
1526 2160
2161 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf,
2166 newSVpv ("coro_slf", 0), 0);
2167
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf,
2170 newSVpv ("coro schedule like function", 0), 0);
2171 }
2172
1527 coroapi.ver = CORO_API_VERSION; 2173 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION;
2175
1528 coroapi.transfer = api_transfer; 2176 coroapi.transfer = api_transfer;
2177
2178 coroapi.sv_state = SvSTATE_;
2179 coroapi.execute_slf = api_execute_slf;
2180 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself;
2184
2185 {
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
1529 2193
1530 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1531} 2195}
1532 2196
1533SV * 2197SV *
1534new (char *klass, ...) 2198new (char *klass, ...)
1535 CODE: 2199 CODE:
1536{ 2200{
1537 struct coro *coro; 2201 struct coro *coro;
2202 MAGIC *mg;
1538 HV *hv; 2203 HV *hv;
1539 int i; 2204 int i;
1540 2205
1541 Newz (0, coro, 1, struct coro); 2206 Newz (0, coro, 1, struct coro);
1542 coro->args = newAV (); 2207 coro->args = newAV ();
… …
1545 if (coro_first) coro_first->prev = coro; 2210 if (coro_first) coro_first->prev = coro;
1546 coro->next = coro_first; 2211 coro->next = coro_first;
1547 coro_first = coro; 2212 coro_first = coro;
1548 2213
1549 coro->hv = hv = newHV (); 2214 coro->hv = hv = newHV ();
1550 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP;
1551 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1552 2218
1553 av_extend (coro->args, items - 1); 2219 av_extend (coro->args, items - 1);
1554 for (i = 1; i < items; i++) 2220 for (i = 1; i < items; i++)
1555 av_push (coro->args, newSVsv (ST (i))); 2221 av_push (coro->args, newSVsv (ST (i)));
1556} 2222}
1557 OUTPUT: 2223 OUTPUT:
1558 RETVAL 2224 RETVAL
1559 2225
1560# these not obviously related functions are all rolled into the same xs
1561# function to increase chances that they all will call transfer with the same
1562# stack offset
1563void 2226void
1564_set_stacklevel (...) 2227_set_stacklevel (...)
1565 ALIAS: 2228 CODE:
1566 Coro::State::transfer = 1 2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1567 Coro::schedule = 2
1568 Coro::cede = 3
1569 Coro::cede_notself = 4
1570 CODE:
1571{
1572 struct transfer_args ta;
1573 2230
1574 switch (ix) 2231void
1575 { 2232transfer (...)
1576 case 0: 2233 PROTOTYPE: $$
1577 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2234 CODE:
1578 ta.next = 0; 2235 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1579 break;
1580
1581 case 1:
1582 if (items != 2)
1583 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1584
1585 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1586 break;
1587
1588 case 2:
1589 prepare_schedule (aTHX_ &ta);
1590 break;
1591
1592 case 3:
1593 prepare_cede (aTHX_ &ta);
1594 break;
1595
1596 case 4:
1597 if (!prepare_cede_notself (aTHX_ &ta))
1598 XSRETURN_EMPTY;
1599
1600 break;
1601 }
1602
1603 BARRIER;
1604 TRANSFER (ta);
1605
1606 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1607 XSRETURN_YES;
1608}
1609 2236
1610bool 2237bool
1611_destroy (SV *coro_sv) 2238_destroy (SV *coro_sv)
1612 CODE: 2239 CODE:
1613 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1614 OUTPUT: 2241 OUTPUT:
1615 RETVAL 2242 RETVAL
1616 2243
1617void 2244void
1618_exit (code) 2245_exit (int code)
1619 int code
1620 PROTOTYPE: $ 2246 PROTOTYPE: $
1621 CODE: 2247 CODE:
1622 _exit (code); 2248 _exit (code);
1623 2249
1624int 2250int
1625cctx_stacksize (int new_stacksize = 0) 2251cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$
1626 CODE: 2253 CODE:
1627 RETVAL = coro_stacksize; 2254 RETVAL = cctx_stacksize;
1628 if (new_stacksize) 2255 if (new_stacksize)
2256 {
1629 coro_stacksize = new_stacksize; 2257 cctx_stacksize = new_stacksize;
2258 ++cctx_gen;
2259 }
1630 OUTPUT: 2260 OUTPUT:
1631 RETVAL 2261 RETVAL
1632 2262
1633int 2263int
2264cctx_max_idle (int max_idle = 0)
2265 PROTOTYPE: ;$
2266 CODE:
2267 RETVAL = cctx_max_idle;
2268 if (max_idle > 1)
2269 cctx_max_idle = max_idle;
2270 OUTPUT:
2271 RETVAL
2272
2273int
1634cctx_count () 2274cctx_count ()
2275 PROTOTYPE:
1635 CODE: 2276 CODE:
1636 RETVAL = cctx_count; 2277 RETVAL = cctx_count;
1637 OUTPUT: 2278 OUTPUT:
1638 RETVAL 2279 RETVAL
1639 2280
1640int 2281int
1641cctx_idle () 2282cctx_idle ()
2283 PROTOTYPE:
1642 CODE: 2284 CODE:
1643 RETVAL = cctx_idle; 2285 RETVAL = cctx_idle;
1644 OUTPUT: 2286 OUTPUT:
1645 RETVAL 2287 RETVAL
1646 2288
1647void 2289void
1648list () 2290list ()
2291 PROTOTYPE:
1649 PPCODE: 2292 PPCODE:
1650{ 2293{
1651 struct coro *coro; 2294 struct coro *coro;
1652 for (coro = coro_first; coro; coro = coro->next) 2295 for (coro = coro_first; coro; coro = coro->next)
1653 if (coro->hv) 2296 if (coro->hv)
… …
1658call (Coro::State coro, SV *coderef) 2301call (Coro::State coro, SV *coderef)
1659 ALIAS: 2302 ALIAS:
1660 eval = 1 2303 eval = 1
1661 CODE: 2304 CODE:
1662{ 2305{
1663 if (coro->mainstack) 2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1664 { 2307 {
1665 struct coro temp; 2308 struct coro temp;
1666 2309
1667 if (!(coro->flags & CF_RUNNING)) 2310 if (!(coro->flags & CF_RUNNING))
1668 { 2311 {
2312 PUTBACK;
1669 save_perl (aTHX_ &temp); 2313 save_perl (aTHX_ &temp);
1670 load_perl (aTHX_ coro); 2314 load_perl (aTHX_ coro);
1671 } 2315 }
1672 2316
1673 { 2317 {
1674 dSP; 2318 dSP;
1675 ENTER; 2319 ENTER;
1676 SAVETMPS; 2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK;
1677 PUSHMARK (SP); 2323 PUSHMARK (SP);
1678 PUTBACK;
1679 2324
1680 if (ix) 2325 if (ix)
1681 eval_sv (coderef, 0); 2326 eval_sv (coderef, 0);
1682 else 2327 else
1683 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1684 2329
2330 POPSTACK;
1685 SPAGAIN; 2331 SPAGAIN;
1686 FREETMPS; 2332 FREETMPS;
1687 LEAVE; 2333 LEAVE;
1688 PUTBACK; 2334 PUTBACK;
1689 } 2335 }
1690 2336
1691 if (!(coro->flags & CF_RUNNING)) 2337 if (!(coro->flags & CF_RUNNING))
1692 { 2338 {
1693 save_perl (aTHX_ coro); 2339 save_perl (aTHX_ coro);
1694 load_perl (aTHX_ &temp); 2340 load_perl (aTHX_ &temp);
2341 SPAGAIN;
1695 } 2342 }
1696 } 2343 }
1697} 2344}
1698 2345
1699SV * 2346SV *
… …
1708 RETVAL = boolSV (coro->flags & ix); 2355 RETVAL = boolSV (coro->flags & ix);
1709 OUTPUT: 2356 OUTPUT:
1710 RETVAL 2357 RETVAL
1711 2358
1712void 2359void
2360throw (Coro::State self, SV *throw = &PL_sv_undef)
2361 PROTOTYPE: $;$
2362 CODE:
2363{
2364 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw;
2366 SvREFCNT_dec (*throwp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2368}
2369
2370void
1713api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$
2373 C_ARGS: aTHX_ coro, flags
1714 2374
1715SV * 2375SV *
1716has_stack (Coro::State coro) 2376has_cctx (Coro::State coro)
1717 PROTOTYPE: $ 2377 PROTOTYPE: $
1718 CODE: 2378 CODE:
1719 RETVAL = boolSV (!!coro->cctx); 2379 RETVAL = boolSV (!!coro->cctx);
1720 OUTPUT: 2380 OUTPUT:
1721 RETVAL 2381 RETVAL
… …
1726 CODE: 2386 CODE:
1727 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2387 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1728 OUTPUT: 2388 OUTPUT:
1729 RETVAL 2389 RETVAL
1730 2390
1731IV 2391UV
1732rss (Coro::State coro) 2392rss (Coro::State coro)
1733 PROTOTYPE: $ 2393 PROTOTYPE: $
1734 ALIAS: 2394 ALIAS:
1735 usecount = 1 2395 usecount = 1
1736 CODE: 2396 CODE:
… …
1740 case 1: RETVAL = coro->usecount; break; 2400 case 1: RETVAL = coro->usecount; break;
1741 } 2401 }
1742 OUTPUT: 2402 OUTPUT:
1743 RETVAL 2403 RETVAL
1744 2404
2405void
2406force_cctx ()
2407 PROTOTYPE:
2408 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0;
2410
2411void
2412swap_defsv (Coro::State self)
2413 PROTOTYPE: $
2414 ALIAS:
2415 swap_defav = 1
2416 CODE:
2417 if (!self->slot)
2418 croak ("cannot swap state with coroutine that has no saved state,");
2419 else
2420 {
2421 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423
2424 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 }
1745 2426
1746MODULE = Coro::State PACKAGE = Coro 2427MODULE = Coro::State PACKAGE = Coro
1747 2428
1748BOOT: 2429BOOT:
1749{ 2430{
1750 int i; 2431 int i;
1751 2432
1752 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1753 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1754 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1755 2436
1756 coro_current = coro_get_sv ("Coro::current", FALSE); 2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1757 SvREADONLY_on (coro_current); 2438 SvREADONLY_on (coro_current);
1758 2439
1759 coro_stash = gv_stashpv ("Coro", TRUE); 2440 coro_stash = gv_stashpv ("Coro", TRUE);
1760 2441
1761 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1767 2448
1768 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1769 coro_ready[i] = newAV (); 2450 coro_ready[i] = newAV ();
1770 2451
1771 { 2452 {
1772 SV *sv = perl_get_sv ("Coro::API", TRUE); 2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1773 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1774 2454
1775 coroapi.schedule = api_schedule; 2455 coroapi.schedule = api_schedule;
1776 coroapi.cede = api_cede; 2456 coroapi.cede = api_cede;
1777 coroapi.cede_notself = api_cede_notself; 2457 coroapi.cede_notself = api_cede_notself;
1778 coroapi.ready = api_ready; 2458 coroapi.ready = api_ready;
1779 coroapi.is_ready = api_is_ready; 2459 coroapi.is_ready = api_is_ready;
1780 coroapi.nready = &coro_nready; 2460 coroapi.nready = coro_nready;
1781 coroapi.current = coro_current; 2461 coroapi.current = coro_current;
1782 2462
1783 GCoroAPI = &coroapi; 2463 GCoroAPI = &coroapi;
1784 sv_setiv (sv, (IV)&coroapi); 2464 sv_setiv (sv, (IV)&coroapi);
1785 SvREADONLY_on (sv); 2465 SvREADONLY_on (sv);
1786 } 2466 }
1787} 2467}
2468
2469void
2470schedule (...)
2471 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2473
2474void
2475cede (...)
2476 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede);
2478
2479void
2480cede_notself (...)
2481 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1788 2483
1789void 2484void
1790_set_current (SV *current) 2485_set_current (SV *current)
1791 PROTOTYPE: $ 2486 PROTOTYPE: $
1792 CODE: 2487 CODE:
1793 SvREFCNT_dec (SvRV (coro_current)); 2488 SvREFCNT_dec (SvRV (coro_current));
1794 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2489 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2490
2491void
2492_set_readyhook (SV *hook)
2493 PROTOTYPE: $
2494 CODE:
2495 SvREFCNT_dec (coro_readyhook);
2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1795 2497
1796int 2498int
1797prio (Coro::State coro, int newprio = 0) 2499prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$
1798 ALIAS: 2501 ALIAS:
1799 nice = 1 2502 nice = 1
1800 CODE: 2503 CODE:
1801{ 2504{
1802 RETVAL = coro->prio; 2505 RETVAL = coro->prio;
… …
1817 2520
1818SV * 2521SV *
1819ready (SV *self) 2522ready (SV *self)
1820 PROTOTYPE: $ 2523 PROTOTYPE: $
1821 CODE: 2524 CODE:
1822 RETVAL = boolSV (api_ready (self)); 2525 RETVAL = boolSV (api_ready (aTHX_ self));
1823 OUTPUT: 2526 OUTPUT:
1824 RETVAL 2527 RETVAL
1825 2528
1826int 2529int
1827nready (...) 2530nready (...)
… …
1829 CODE: 2532 CODE:
1830 RETVAL = coro_nready; 2533 RETVAL = coro_nready;
1831 OUTPUT: 2534 OUTPUT:
1832 RETVAL 2535 RETVAL
1833 2536
1834void
1835throw (Coro::State self, SV *throw = &PL_sv_undef)
1836 PROTOTYPE: $;$
1837 CODE:
1838 SvREFCNT_dec (self->throw);
1839 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1840
1841# for async_pool speedup 2537# for async_pool speedup
1842void 2538void
1843_pool_1 (SV *cb) 2539_pool_1 (SV *cb)
1844 CODE: 2540 CODE:
1845{ 2541{
1846 struct coro *coro = SvSTATE (coro_current);
1847 HV *hv = (HV *)SvRV (coro_current); 2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
1848 AV *defav = GvAV (PL_defgv); 2544 AV *defav = GvAV (PL_defgv);
1849 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1850 AV *invoke_av; 2546 AV *invoke_av;
1851 int i, len; 2547 int i, len;
1852 2548
1853 if (!invoke) 2549 if (!invoke)
2550 {
2551 SV *old = PL_diehook;
2552 PL_diehook = 0;
2553 SvREFCNT_dec (old);
1854 croak ("\3async_pool terminate\2\n"); 2554 croak ("\3async_pool terminate\2\n");
2555 }
1855 2556
1856 SvREFCNT_dec (coro->saved_deffh); 2557 SvREFCNT_dec (coro->saved_deffh);
1857 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1858 2559
1859 hv_store (hv, "desc", sizeof ("desc") - 1, 2560 hv_store (hv, "desc", sizeof ("desc") - 1,
1860 newSVpvn (strpair ("[async_pool]")), 0); 2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1861 2562
1862 invoke_av = (AV *)SvRV (invoke); 2563 invoke_av = (AV *)SvRV (invoke);
1863 len = av_len (invoke_av); 2564 len = av_len (invoke_av);
1864 2565
1865 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1866 2567
1867 if (len > 0) 2568 if (len > 0)
1868 { 2569 {
1869 av_fill (defav, len - 1); 2570 av_fill (defav, len - 1);
1870 for (i = 0; i < len; ++i) 2571 for (i = 0; i < len; ++i)
1871 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1872 } 2573 }
1873
1874 SvREFCNT_dec (invoke);
1875} 2574}
1876 2575
1877void 2576void
1878_pool_2 (SV *cb) 2577_pool_2 (SV *cb)
1879 CODE: 2578 CODE:
1880{ 2579{
1881 struct coro *coro = SvSTATE (coro_current); 2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv);
1882 2582
1883 sv_setsv (cb, &PL_sv_undef); 2583 sv_setsv (cb, &PL_sv_undef);
1884 2584
1885 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1886 coro->saved_deffh = 0; 2586 coro->saved_deffh = 0;
1887 2587
1888 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1889 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
1890 croak ("\3async_pool terminate\2\n"); 2594 croak ("\3async_pool terminate\2\n");
2595 }
1891 2596
1892 av_clear (GvAV (PL_defgv)); 2597 av_clear (GvAV (PL_defgv));
1893 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2598 hv_store (hv, "desc", sizeof ("desc") - 1,
1894 newSVpvn (strpair ("[async_pool idle]")), 0); 2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1895 2600
1896 coro->prio = 0; 2601 coro->prio = 0;
1897 2602
1898 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1899 api_trace (coro_current, 0); 2604 api_trace (aTHX_ coro_current, 0);
1900 2605
1901 av_push (av_async_pool, newSVsv (coro_current)); 2606 av_push (av_async_pool, newSVsv (coro_current));
1902} 2607}
1903 2608
1904 2609
1905MODULE = Coro::State PACKAGE = Coro::AIO 2610MODULE = Coro::State PACKAGE = Coro::AIO
1906 2611
1907SV * 2612void
1908_get_state () 2613_get_state (SV *self)
2614 PROTOTYPE: $
1909 CODE: 2615 PPCODE:
1910{ 2616{
1911 struct io_state *data; 2617 AV *defav = GvAV (PL_defgv);
1912 2618 AV *av = newAV ();
2619 int i;
1913 RETVAL = newSV (sizeof (struct io_state)); 2620 SV *data_sv = newSV (sizeof (struct io_state));
1914 data = (struct io_state *)SvPVX (RETVAL); 2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1915 SvCUR_set (RETVAL, sizeof (struct io_state)); 2622 SvCUR_set (data_sv, sizeof (struct io_state));
1916 SvPOK_only (RETVAL); 2623 SvPOK_only (data_sv);
1917 2624
1918 data->errorno = errno; 2625 data->errorno = errno;
1919 data->laststype = PL_laststype; 2626 data->laststype = PL_laststype;
1920 data->laststatval = PL_laststatval; 2627 data->laststatval = PL_laststatval;
1921 data->statcache = PL_statcache; 2628 data->statcache = PL_statcache;
2629
2630 av_extend (av, AvFILLp (defav) + 1 + 1);
2631
2632 for (i = 0; i <= AvFILLp (defav); ++i)
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2634
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
1922} 2640}
1923 OUTPUT:
1924 RETVAL
1925 2641
1926void 2642void
1927_set_state (char *data_) 2643_set_state (SV *state)
1928 PROTOTYPE: $ 2644 PROTOTYPE: $
1929 CODE: 2645 PPCODE:
1930{ 2646{
1931 struct io_state *data = (void *)data_; 2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
1932 2650
1933 errno = data->errorno; 2651 errno = data->errorno;
1934 PL_laststype = data->laststype; 2652 PL_laststype = data->laststype;
1935 PL_laststatval = data->laststatval; 2653 PL_laststatval = data->laststatval;
1936 PL_statcache = data->statcache; 2654 PL_statcache = data->statcache;
1937}
1938 2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 {
2682 PUSHMARK (SP);
2683 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2685 SPAGAIN;
2686 }
2687
2688 --incede;
2689}
2690
2691
2692MODULE = Coro::State PACKAGE = PerlIO::cede
2693
2694BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696
2697MODULE = Coro::State PACKAGE = Coro::Semaphore
2698
2699SV *
2700new (SV *klass, SV *count_ = 0)
2701 CODE:
2702{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2704 AV *av = newAV ();
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2707}
2708 OUTPUT:
2709 RETVAL
2710
2711SV *
2712count (SV *self)
2713 CODE:
2714 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2715 OUTPUT:
2716 RETVAL
2717
2718void
2719up (SV *self, int adjust = 1)
2720 ALIAS:
2721 adjust = 1
2722 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724
2725void
2726down (SV *self)
2727 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2729
2730void
2731try (SV *self)
2732 PPCODE:
2733{
2734 AV *av = (AV *)SvRV (self);
2735 SV *count_sv = AvARRAY (av)[0];
2736 IV count = SvIVX (count_sv);
2737
2738 if (count > 0)
2739 {
2740 --count;
2741 SvIVX (count_sv) = count;
2742 XSRETURN_YES;
2743 }
2744 else
2745 XSRETURN_NO;
2746}
2747
2748void
2749waiters (SV *self)
2750 CODE:
2751{
2752 AV *av = (AV *)SvRV (self);
2753
2754 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2756 else
2757 {
2758 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1);
2760 for (i = 1; i <= AvFILLp (av); ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i]));
2762 }
2763}
2764

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