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Comparing Coro/Coro/State.xs (file contents):
Revision 1.199 by root, Sun Oct 7 13:53:37 2007 UTC vs.
Revision 1.281 by root, Sun Nov 16 10:12:38 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) 149# endif
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 150#endif
134 151
135/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
136struct io_state 153struct io_state
137{ 154{
155 AV *res;
138 int errorno; 156 int errorno;
139 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
140 int laststatval; 158 int laststatval;
141 Stat_t statcache; 159 Stat_t statcache;
142}; 160};
143 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
144static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
145static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
146static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
147static JMPENV *main_top_env; 168static JMPENV *main_top_env;
148static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
149static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next;
150 172
151static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
152static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
153static SV *sv_diehook; 175static SV *rv_diehook;
154static SV *sv_warnhook; 176static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */
155 178
156/* async_pool helper stuff */ 179/* async_pool helper stuff */
157static SV *sv_pool_rss; 180static SV *sv_pool_rss;
158static SV *sv_pool_size; 181static SV *sv_pool_size;
159static AV *av_async_pool; 182static AV *av_async_pool;
183
184/* Coro::AnyEvent */
185static SV *sv_activity;
160 186
161static struct coro_cctx *cctx_first; 187static struct coro_cctx *cctx_first;
162static int cctx_count, cctx_idle; 188static int cctx_count, cctx_idle;
163 189
164enum { 190enum {
… …
169 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
170 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
171}; 197};
172 198
173/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
174typedef struct coro_cctx { 200typedef struct coro_cctx
201{
175 struct coro_cctx *next; 202 struct coro_cctx *next;
176 203
177 /* the stack */ 204 /* the stack */
178 void *sptr; 205 void *sptr;
179 size_t ssize; 206 size_t ssize;
… …
182 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
183 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
184 JMPENV *top_env; 211 JMPENV *top_env;
185 coro_context cctx; 212 coro_context cctx;
186 213
214 U32 gen;
187#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
188 int valgrind_id; 216 int valgrind_id;
189#endif 217#endif
190 unsigned char flags; 218 unsigned char flags;
191} coro_cctx; 219} coro_cctx;
… …
196 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
197 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
198}; 226};
199 227
200/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
201typedef struct { 229typedef struct
230{
202 SV *defsv; 231 SV *defsv;
203 AV *defav; 232 AV *defav;
204 SV *errsv; 233 SV *errsv;
205 SV *irsgv; 234 SV *irsgv;
206#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
210 239
211#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
212 241
213/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
214struct coro { 243struct coro {
215 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
216 coro_cctx *cctx; 245 coro_cctx *cctx;
217 246
218 /* process data */ 247 /* process data */
248 struct CoroSLF slf_frame; /* saved slf frame */
219 AV *mainstack; 249 AV *mainstack;
220 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
221 251
222 /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
223 AV *args; 253 int refcnt; /* coroutines are refcounted, yes */
224 int refcnt;
225 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
226 257
227 /* statistics */ 258 /* statistics */
228 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
229 260
230 /* coro process data */ 261 /* coro process data */
231 int prio; 262 int prio;
232 SV *throw; 263 SV *throw; /* exception to be thrown */
233 264
234 /* async_pool */ 265 /* async_pool */
235 SV *saved_deffh; 266 SV *saved_deffh;
236 267
237 /* linked list */ 268 /* linked list */
238 struct coro *next, *prev; 269 struct coro *next, *prev;
239 HV *hv; /* the perl hash associated with this coro, if any */
240}; 270};
241 271
242typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
243typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275static struct CoroSLF slf_frame; /* the current slf frame */
244 276
245/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
246 278
247#define PRIO_MAX 3 279#define PRIO_MAX 3
248#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
251#define PRIO_IDLE -3 283#define PRIO_IDLE -3
252#define PRIO_MIN -4 284#define PRIO_MIN -4
253 285
254/* for Coro.pm */ 286/* for Coro.pm */
255static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
256static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
257static int coro_nready;
258static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
259 292
260/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
261 294
262static SV * 295static SV *
263coro_get_sv (const char *name, int create) 296coro_get_sv (pTHX_ const char *name, int create)
264{ 297{
265#if PERL_VERSION_ATLEAST (5,9,0) 298#if PERL_VERSION_ATLEAST (5,10,0)
266 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
267 get_sv (name, create); 300 get_sv (name, create);
268#endif 301#endif
269 return get_sv (name, create); 302 return get_sv (name, create);
270} 303}
271 304
272static SV * 305static AV *
273coro_get_av (const char *name, int create) 306coro_get_av (pTHX_ const char *name, int create)
274{ 307{
275#if PERL_VERSION_ATLEAST (5,9,0) 308#if PERL_VERSION_ATLEAST (5,10,0)
276 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
277 get_av (name, create); 310 get_av (name, create);
278#endif 311#endif
279 return get_av (name, create); 312 return get_av (name, create);
280} 313}
281 314
315static HV *
316coro_get_hv (pTHX_ const char *name, int create)
317{
318#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create);
321#endif
322 return get_hv (name, create);
323}
324
282static AV * 325static AV *
283coro_clone_padlist (pTHX_ CV *cv) 326coro_clone_padlist (pTHX_ CV *cv)
284{ 327{
285 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
286 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
287 330
288 newpadlist = newAV (); 331 newpadlist = newAV ();
289 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
290#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
291 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
292#else 335#else
293 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
294#endif 337#endif
295 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
296 --AvFILLp (padlist); 339 --AvFILLp (padlist);
297 340
298 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
299 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
300 343
301 return newpadlist; 344 return newpadlist;
302} 345}
303 346
… …
333 376
334 /* casting is fun. */ 377 /* casting is fun. */
335 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
336 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
337 380
338 SvREFCNT_dec (av); 381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
339 382
340 return 0; 383 return 0;
341} 384}
342 385
343#define PERL_MAGIC_coro PERL_MAGIC_ext 386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
344 388
345static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 389static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0,
391 coro_cv_free
392};
346 393
347#define CORO_MAGIC(cv) \ 394#define CORO_MAGIC(sv, type) \
348 SvMAGIC (cv) \ 395 expect_true (SvMAGIC (sv)) \
349 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
350 ? SvMAGIC (cv) \ 397 ? SvMAGIC (sv) \
351 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 398 : mg_find (sv, type) \
352 : 0 399 : 0
353 400
354static struct coro * 401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
355SvSTATE_ (pTHX_ SV *coro) 405SvSTATE_ (pTHX_ SV *coro)
356{ 406{
357 HV *stash; 407 HV *stash;
358 MAGIC *mg; 408 MAGIC *mg;
359 409
… …
369 /* very slow, but rare, check */ 419 /* very slow, but rare, check */
370 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
371 croak ("Coro::State object required"); 421 croak ("Coro::State object required");
372 } 422 }
373 423
374 mg = CORO_MAGIC (coro); 424 mg = CORO_MAGIC_state (coro);
375 return (struct coro *)mg->mg_ptr; 425 return (struct coro *)mg->mg_ptr;
376} 426}
377 427
378#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
379 429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442
380/* the next two functions merely cache the padlists */ 443/* the next two functions merely cache the padlists */
381static void 444static void
382get_padlist (pTHX_ CV *cv) 445get_padlist (pTHX_ CV *cv)
383{ 446{
384 MAGIC *mg = CORO_MAGIC (cv); 447 MAGIC *mg = CORO_MAGIC_cv (cv);
385 AV *av; 448 AV *av;
386 449
387 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 450 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
388 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 451 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
389 else 452 else
390 { 453 {
391#if CORO_PREFER_PERL_FUNCTIONS 454#if CORO_PREFER_PERL_FUNCTIONS
392 /* this is probably cleaner, but also slower? */ 455 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */
393 CV *cp = Perl_cv_clone (cv); 457 CV *cp = Perl_cv_clone (cv);
394 CvPADLIST (cv) = CvPADLIST (cp); 458 CvPADLIST (cv) = CvPADLIST (cp);
395 CvPADLIST (cp) = 0; 459 CvPADLIST (cp) = 0;
396 SvREFCNT_dec (cp); 460 SvREFCNT_dec (cp);
397#else 461#else
… …
401} 465}
402 466
403static void 467static void
404put_padlist (pTHX_ CV *cv) 468put_padlist (pTHX_ CV *cv)
405{ 469{
406 MAGIC *mg = CORO_MAGIC (cv); 470 MAGIC *mg = CORO_MAGIC_cv (cv);
407 AV *av; 471 AV *av;
408 472
409 if (expect_false (!mg)) 473 if (expect_false (!mg))
410 { 474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
411 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
412 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
413 mg->mg_virtual = &vtbl_coro;
414 mg->mg_obj = (SV *)newAV ();
415 }
416 475
417 av = (AV *)mg->mg_obj; 476 av = (AV *)mg->mg_obj;
418 477
419 if (expect_false (AvFILLp (av) >= AvMAX (av))) 478 if (expect_false (AvFILLp (av) >= AvMAX (av)))
420 av_extend (av, AvMAX (av) + 1); 479 av_extend (av, AvMAX (av) + 1);
… …
454 CvPADLIST (cv) = (AV *)POPs; 513 CvPADLIST (cv) = (AV *)POPs;
455 } 514 }
456 515
457 PUTBACK; 516 PUTBACK;
458 } 517 }
518
519 slf_frame = c->slf_frame;
459} 520}
460 521
461static void 522static void
462save_perl (pTHX_ Coro__State c) 523save_perl (pTHX_ Coro__State c)
463{ 524{
525 c->slf_frame = slf_frame;
526
464 { 527 {
465 dSP; 528 dSP;
466 I32 cxix = cxstack_ix; 529 I32 cxix = cxstack_ix;
467 PERL_CONTEXT *ccstk = cxstack; 530 PERL_CONTEXT *ccstk = cxstack;
468 PERL_SI *top_si = PL_curstackinfo; 531 PERL_SI *top_si = PL_curstackinfo;
… …
486 549
487 if (expect_true (CvDEPTH (cv))) 550 if (expect_true (CvDEPTH (cv)))
488 { 551 {
489 EXTEND (SP, 3); 552 EXTEND (SP, 3);
490 PUSHs ((SV *)CvPADLIST (cv)); 553 PUSHs ((SV *)CvPADLIST (cv));
491 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 554 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
492 PUSHs ((SV *)cv); 555 PUSHs ((SV *)cv);
493 556
494 CvDEPTH (cv) = 0; 557 CvDEPTH (cv) = 0;
495 get_padlist (aTHX_ cv); 558 get_padlist (aTHX_ cv);
496 } 559 }
… …
507 570
508 PUTBACK; 571 PUTBACK;
509 } 572 }
510 573
511 /* allocate some space on the context stack for our purposes */ 574 /* allocate some space on the context stack for our purposes */
575 /* we manually unroll here, as usually 2 slots is enough */
576 if (SLOT_COUNT >= 1) CXINC;
577 if (SLOT_COUNT >= 2) CXINC;
578 if (SLOT_COUNT >= 3) CXINC;
512 { 579 {
513 /* we manually unroll here, as usually 2 slots is enough */
514 int i; 580 int i;
515 if (SLOT_COUNT >= 1) CXINC;
516 if (SLOT_COUNT >= 2) CXINC;
517 if (SLOT_COUNT >= 3) CXINC;
518 for (i = 3; i < SLOT_COUNT; ++i) 581 for (i = 3; i < SLOT_COUNT; ++i)
519 CXINC; 582 CXINC;
520
521 cxstack_ix -= SLOT_COUNT; /* undo allocation */
522 } 583 }
584 cxstack_ix -= SLOT_COUNT; /* undo allocation */
523 585
524 c->mainstack = PL_mainstack; 586 c->mainstack = PL_mainstack;
525 587
526 { 588 {
527 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
… …
536 #undef VAR 598 #undef VAR
537 } 599 }
538} 600}
539 601
540/* 602/*
541 * allocate various perl stacks. This is an exact copy 603 * allocate various perl stacks. This is almost an exact copy
542 * of perl.c:init_stacks, except that it uses less memory 604 * of perl.c:init_stacks, except that it uses less memory
543 * on the (sometimes correct) assumption that coroutines do 605 * on the (sometimes correct) assumption that coroutines do
544 * not usually need a lot of stackspace. 606 * not usually need a lot of stackspace.
545 */ 607 */
546#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
… …
577 639
578 New(54,PL_savestack,24,ANY); 640 New(54,PL_savestack,24,ANY);
579 PL_savestack_ix = 0; 641 PL_savestack_ix = 0;
580 PL_savestack_max = 24; 642 PL_savestack_max = 24;
581 643
582#if !PERL_VERSION_ATLEAST (5,9,0) 644#if !PERL_VERSION_ATLEAST (5,10,0)
583 New(54,PL_retstack,4,OP*); 645 New(54,PL_retstack,4,OP*);
584 PL_retstack_ix = 0; 646 PL_retstack_ix = 0;
585 PL_retstack_max = 4; 647 PL_retstack_max = 4;
586#endif 648#endif
587} 649}
… …
589 651
590/* 652/*
591 * destroy the stacks, the callchain etc... 653 * destroy the stacks, the callchain etc...
592 */ 654 */
593static void 655static void
594coro_destroy_stacks (pTHX) 656coro_destruct_stacks (pTHX)
595{ 657{
596 while (PL_curstackinfo->si_next) 658 while (PL_curstackinfo->si_next)
597 PL_curstackinfo = PL_curstackinfo->si_next; 659 PL_curstackinfo = PL_curstackinfo->si_next;
598 660
599 while (PL_curstackinfo) 661 while (PL_curstackinfo)
… …
610 672
611 Safefree (PL_tmps_stack); 673 Safefree (PL_tmps_stack);
612 Safefree (PL_markstack); 674 Safefree (PL_markstack);
613 Safefree (PL_scopestack); 675 Safefree (PL_scopestack);
614 Safefree (PL_savestack); 676 Safefree (PL_savestack);
615#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
616 Safefree (PL_retstack); 678 Safefree (PL_retstack);
617#endif 679#endif
618} 680}
619 681
620static size_t 682static size_t
… …
636 #undef VAR 698 #undef VAR
637 } 699 }
638 else 700 else
639 slot = coro->slot; 701 slot = coro->slot;
640 702
703 if (slot)
704 {
641 rss += sizeof (slot->curstackinfo); 705 rss += sizeof (slot->curstackinfo);
642 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
643 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
644 rss += slot->tmps_max * sizeof (SV *); 708 rss += slot->tmps_max * sizeof (SV *);
645 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
646 rss += slot->scopestack_max * sizeof (I32); 710 rss += slot->scopestack_max * sizeof (I32);
647 rss += slot->savestack_max * sizeof (ANY); 711 rss += slot->savestack_max * sizeof (ANY);
648 712
649#if !PERL_VERSION_ATLEAST (5,9,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
650 rss += slot->retstack_max * sizeof (OP *); 714 rss += slot->retstack_max * sizeof (OP *);
651#endif 715#endif
716 }
652 } 717 }
653 718
654 return rss; 719 return rss;
655} 720}
656 721
657/** coroutine stack handling ************************************************/ 722/** coroutine stack handling ************************************************/
723
724static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
727
728/* apparently < 5.8.8 */
729#ifndef MgPV_nolen_const
730#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
731 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
732 (const char*)(mg)->mg_ptr)
733#endif
734
735/*
736 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide
739 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */
744static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{
747 const char *s = MgPV_nolen_const (mg);
748
749 if (*s == '_')
750 {
751 SV **svp = 0;
752
753 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
754 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
755
756 if (svp)
757 {
758 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
759 return 0;
760 }
761 }
762
763 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
764}
765
766static int
767coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 SV *old = *svp;
781 *svp = 0;
782 SvREFCNT_dec (old);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
792{
793 const char *s = MgPV_nolen_const (mg);
794
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp;
805 *svp = newSVsv (sv);
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
812}
813
814static void
815prepare_nop (pTHX_ struct coro_transfer_args *ta)
816{
817 /* kind of mega-hacky, but works */
818 ta->next = ta->prev = (struct coro *)ta;
819}
820
821static int
822slf_check_nop (pTHX_ struct CoroSLF *frame)
823{
824 return 0;
825}
658 826
659static void 827static void
660coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
661{ 829{
662 /* 830 /*
… …
671 PL_curpm = 0; 839 PL_curpm = 0;
672 PL_curpad = 0; 840 PL_curpad = 0;
673 PL_localizing = 0; 841 PL_localizing = 0;
674 PL_dirty = 0; 842 PL_dirty = 0;
675 PL_restartop = 0; 843 PL_restartop = 0;
676 PL_diehook = SvREFCNT_inc (sv_diehook); 844#if PERL_VERSION_ATLEAST (5,10,0)
677 PL_warnhook = SvREFCNT_inc (sv_warnhook); 845 PL_parser = 0;
846#endif
847
848 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
678 851
679 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
680 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
681 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
682 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
683 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
684 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
685 858
686 { 859 {
687 dSP; 860 dSP;
688 LOGOP myop; 861 UNOP myop;
689 862
690 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
691 myop.op_next = Nullop; 864 myop.op_next = Nullop;
692 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
693 866
694 PUSHMARK (SP); 867 PUSHMARK (SP);
695 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
697 PL_op = (OP *)&myop; 870 PL_op = (OP *)&myop;
698 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
699 SPAGAIN; 872 SPAGAIN;
700 } 873 }
701 874
702 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 875 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
703} 880}
704 881
705static void 882static void
706coro_destroy (pTHX_ struct coro *coro) 883coro_destruct (pTHX_ struct coro *coro)
707{ 884{
708 if (!IN_DESTRUCT) 885 if (!IN_DESTRUCT)
709 { 886 {
710 /* restore all saved variables and stuff */ 887 /* restore all saved variables and stuff */
711 LEAVE_SCOPE (0); 888 LEAVE_SCOPE (0);
… …
733 SvREFCNT_dec (PL_warnhook); 910 SvREFCNT_dec (PL_warnhook);
734 911
735 SvREFCNT_dec (coro->saved_deffh); 912 SvREFCNT_dec (coro->saved_deffh);
736 SvREFCNT_dec (coro->throw); 913 SvREFCNT_dec (coro->throw);
737 914
738 coro_destroy_stacks (aTHX); 915 coro_destruct_stacks (aTHX);
739} 916}
740 917
741static void 918INLINE void
742free_coro_mortal (pTHX) 919free_coro_mortal (pTHX)
743{ 920{
744 if (expect_true (coro_mortal)) 921 if (expect_true (coro_mortal))
745 { 922 {
746 SvREFCNT_dec (coro_mortal); 923 SvREFCNT_dec (coro_mortal);
… …
751static int 928static int
752runops_trace (pTHX) 929runops_trace (pTHX)
753{ 930{
754 COP *oldcop = 0; 931 COP *oldcop = 0;
755 int oldcxix = -2; 932 int oldcxix = -2;
756 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
757 coro_cctx *cctx = coro->cctx; 934 coro_cctx *cctx = coro->cctx;
758 935
759 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
760 { 937 {
761 PERL_ASYNC_CHECK (); 938 PERL_ASYNC_CHECK ();
… …
780 : cx->blk_gimme == G_SCALAR ? bot + 1 957 : cx->blk_gimme == G_SCALAR ? bot + 1
781 : bot; 958 : bot;
782 959
783 av_extend (av, top - bot); 960 av_extend (av, top - bot);
784 while (bot < top) 961 while (bot < top)
785 av_push (av, SvREFCNT_inc (*bot++)); 962 av_push (av, SvREFCNT_inc_NN (*bot++));
786 963
787 PL_runops = RUNOPS_DEFAULT; 964 PL_runops = RUNOPS_DEFAULT;
788 ENTER; 965 ENTER;
789 SAVETMPS; 966 SAVETMPS;
790 EXTEND (SP, 3); 967 EXTEND (SP, 3);
… …
828 SAVETMPS; 1005 SAVETMPS;
829 EXTEND (SP, 3); 1006 EXTEND (SP, 3);
830 PUSHMARK (SP); 1007 PUSHMARK (SP);
831 PUSHs (&PL_sv_yes); 1008 PUSHs (&PL_sv_yes);
832 PUSHs (fullname); 1009 PUSHs (fullname);
833 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
834 PUTBACK; 1011 PUTBACK;
835 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
836 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
837 SPAGAIN; 1014 SPAGAIN;
838 FREETMPS; 1015 FREETMPS;
… …
870 1047
871 TAINT_NOT; 1048 TAINT_NOT;
872 return 0; 1049 return 0;
873} 1050}
874 1051
1052static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1054{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0;
1057}
1058
875/* inject a fake call to Coro::State::_cctx_init into the execution */ 1059/* inject a fake call to Coro::State::_cctx_init into the execution */
876/* _cctx_init should be careful, as it could be called at almost any time */ 1060/* _cctx_init should be careful, as it could be called at almost any time */
877/* during execution of a perl program */ 1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
878static void NOINLINE 1063static void NOINLINE
879prepare_cctx (pTHX_ coro_cctx *cctx) 1064cctx_prepare (pTHX_ coro_cctx *cctx)
880{ 1065{
881 dSP; 1066 dSP;
882 LOGOP myop; 1067 UNOP myop;
883 1068
884 PL_top_env = &PL_start_env; 1069 PL_top_env = &PL_start_env;
885 1070
886 if (cctx->flags & CC_TRACE) 1071 if (cctx->flags & CC_TRACE)
887 PL_runops = runops_trace; 1072 PL_runops = runops_trace;
888 1073
889 Zero (&myop, 1, LOGOP); 1074 Zero (&myop, 1, UNOP);
890 myop.op_next = PL_op; 1075 myop.op_next = PL_op;
891 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
892 1077
893 PUSHMARK (SP); 1078 PUSHMARK (SP);
894 EXTEND (SP, 2); 1079 EXTEND (SP, 2);
895 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1080 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
896 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
897 PUTBACK; 1082 PUTBACK;
898 PL_op = (OP *)&myop; 1083 PL_op = (OP *)&myop;
899 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
900 SPAGAIN; 1085 SPAGAIN;
901} 1086}
902 1087
1088/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void
1090transfer_tail (pTHX)
1091{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106}
1107
903/* 1108/*
904 * this is a _very_ stripped down perl interpreter ;) 1109 * this is a _very_ stripped down perl interpreter ;)
905 */ 1110 */
906static void 1111static void
907coro_run (void *arg) 1112cctx_run (void *arg)
908{ 1113{
1114#ifdef USE_ITHREADS
1115# if CORO_PTHREAD
1116 PERL_SET_CONTEXT (coro_thx);
1117# endif
1118#endif
1119 {
909 dTHX; 1120 dTHX;
910 1121
911 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1122 /* normally we would need to skip the entersub here */
912 UNLOCK; 1123 /* not doing so will re-execute it, which is exactly what we want */
913
914 /* we now skip the entersub that lead to transfer() */
915 PL_op = PL_op->op_next; 1124 /* PL_nop = PL_nop->op_next */
916 1125
917 /* inject a fake subroutine call to cctx_init */ 1126 /* inject a fake subroutine call to cctx_init */
918 prepare_cctx (aTHX_ (coro_cctx *)arg); 1127 cctx_prepare (aTHX_ (coro_cctx *)arg);
919 1128
1129 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX);
1132
920 /* somebody or something will hit me for both perl_run and PL_restartop */ 1133 /* somebody or something will hit me for both perl_run and PL_restartop */
921 PL_restartop = PL_op; 1134 PL_restartop = PL_op;
922 perl_run (PL_curinterp); 1135 perl_run (PL_curinterp);
923 1136
924 /* 1137 /*
925 * If perl-run returns we assume exit() was being called or the coro 1138 * If perl-run returns we assume exit() was being called or the coro
926 * fell off the end, which seems to be the only valid (non-bug) 1139 * fell off the end, which seems to be the only valid (non-bug)
927 * reason for perl_run to return. We try to exit by jumping to the 1140 * reason for perl_run to return. We try to exit by jumping to the
928 * bootstrap-time "top" top_env, as we cannot restore the "main" 1141 * bootstrap-time "top" top_env, as we cannot restore the "main"
929 * coroutine as Coro has no such concept 1142 * coroutine as Coro has no such concept
930 */ 1143 */
931 PL_top_env = main_top_env; 1144 PL_top_env = main_top_env;
932 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 }
933} 1147}
934 1148
935static coro_cctx * 1149static coro_cctx *
936cctx_new () 1150cctx_new ()
937{ 1151{
938 coro_cctx *cctx; 1152 coro_cctx *cctx;
1153
1154 ++cctx_count;
1155 New (0, cctx, 1, coro_cctx);
1156
1157 cctx->gen = cctx_gen;
1158 cctx->flags = 0;
1159 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1160
1161 return cctx;
1162}
1163
1164/* create a new cctx only suitable as source */
1165static coro_cctx *
1166cctx_new_empty ()
1167{
1168 coro_cctx *cctx = cctx_new ();
1169
1170 cctx->sptr = 0;
1171 coro_create (&cctx->cctx, 0, 0, 0, 0);
1172
1173 return cctx;
1174}
1175
1176/* create a new cctx suitable as destination/running a perl interpreter */
1177static coro_cctx *
1178cctx_new_run ()
1179{
1180 coro_cctx *cctx = cctx_new ();
939 void *stack_start; 1181 void *stack_start;
940 size_t stack_size; 1182 size_t stack_size;
941 1183
942 ++cctx_count;
943
944 Newz (0, cctx, 1, coro_cctx);
945
946#if HAVE_MMAP 1184#if HAVE_MMAP
947
948 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1185 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
949 /* mmap supposedly does allocate-on-write for us */ 1186 /* mmap supposedly does allocate-on-write for us */
950 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1187 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
951 1188
952 if (cctx->sptr != (void *)-1) 1189 if (cctx->sptr != (void *)-1)
953 { 1190 {
954# if CORO_STACKGUARD 1191 #if CORO_STACKGUARD
955 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1192 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
956# endif 1193 #endif
957 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1194 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
958 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1195 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
959 cctx->flags |= CC_MAPPED; 1196 cctx->flags |= CC_MAPPED;
960 } 1197 }
961 else 1198 else
962#endif 1199#endif
963 { 1200 {
964 cctx->ssize = coro_stacksize * (long)sizeof (long); 1201 cctx->ssize = cctx_stacksize * (long)sizeof (long);
965 New (0, cctx->sptr, coro_stacksize, long); 1202 New (0, cctx->sptr, cctx_stacksize, long);
966 1203
967 if (!cctx->sptr) 1204 if (!cctx->sptr)
968 { 1205 {
969 perror ("FATAL: unable to allocate stack for coroutine"); 1206 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
970 _exit (EXIT_FAILURE); 1207 _exit (EXIT_FAILURE);
971 } 1208 }
972 1209
973 stack_start = cctx->sptr; 1210 stack_start = cctx->sptr;
974 stack_size = cctx->ssize; 1211 stack_size = cctx->ssize;
975 } 1212 }
976 1213
977 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1214 #if CORO_USE_VALGRIND
1215 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1216 #endif
1217
978 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1218 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
979 1219
980 return cctx; 1220 return cctx;
981} 1221}
982 1222
983static void 1223static void
… …
985{ 1225{
986 if (!cctx) 1226 if (!cctx)
987 return; 1227 return;
988 1228
989 --cctx_count; 1229 --cctx_count;
1230 coro_destroy (&cctx->cctx);
990 1231
1232 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr)
1234 {
991#if CORO_USE_VALGRIND 1235 #if CORO_USE_VALGRIND
992 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1236 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
993#endif 1237 #endif
994 1238
995#if HAVE_MMAP 1239#if HAVE_MMAP
996 if (cctx->flags & CC_MAPPED) 1240 if (cctx->flags & CC_MAPPED)
997 munmap (cctx->sptr, cctx->ssize); 1241 munmap (cctx->sptr, cctx->ssize);
998 else 1242 else
999#endif 1243#endif
1000 Safefree (cctx->sptr); 1244 Safefree (cctx->sptr);
1245 }
1001 1246
1002 Safefree (cctx); 1247 Safefree (cctx);
1003} 1248}
1004 1249
1005/* wether this cctx should be destructed */ 1250/* wether this cctx should be destructed */
1006#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1251#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1007 1252
1008static coro_cctx * 1253static coro_cctx *
1009cctx_get (pTHX) 1254cctx_get (pTHX)
1010{ 1255{
1011 while (expect_true (cctx_first)) 1256 while (expect_true (cctx_first))
… …
1018 return cctx; 1263 return cctx;
1019 1264
1020 cctx_destroy (cctx); 1265 cctx_destroy (cctx);
1021 } 1266 }
1022 1267
1023 return cctx_new (); 1268 return cctx_new_run ();
1024} 1269}
1025 1270
1026static void 1271static void
1027cctx_put (coro_cctx *cctx) 1272cctx_put (coro_cctx *cctx)
1028{ 1273{
1274 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1275
1029 /* free another cctx if overlimit */ 1276 /* free another cctx if overlimit */
1030 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1277 if (expect_false (cctx_idle >= cctx_max_idle))
1031 { 1278 {
1032 coro_cctx *first = cctx_first; 1279 coro_cctx *first = cctx_first;
1033 cctx_first = first->next; 1280 cctx_first = first->next;
1034 --cctx_idle; 1281 --cctx_idle;
1035 1282
… …
1047transfer_check (pTHX_ struct coro *prev, struct coro *next) 1294transfer_check (pTHX_ struct coro *prev, struct coro *next)
1048{ 1295{
1049 if (expect_true (prev != next)) 1296 if (expect_true (prev != next))
1050 { 1297 {
1051 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1052 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1053 1300
1054 if (expect_false (next->flags & CF_RUNNING)) 1301 if (expect_false (next->flags & CF_RUNNING))
1055 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1056 1303
1057 if (expect_false (next->flags & CF_DESTROYED)) 1304 if (expect_false (next->flags & CF_DESTROYED))
1058 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1059 1306
1060 if (
1061#if PERL_VERSION_ATLEAST (5,9,0) 1307#if !PERL_VERSION_ATLEAST (5,10,0)
1062 expect_false (PL_parser)
1063#else
1064 expect_false (PL_lex_state != LEX_NOTPARSING) 1308 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1065#endif
1066 )
1067 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif
1068 } 1311 }
1069} 1312}
1070 1313
1071/* always use the TRANSFER macro */ 1314/* always use the TRANSFER macro */
1072static void NOINLINE 1315static void NOINLINE
1073transfer (pTHX_ struct coro *prev, struct coro *next) 1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1074{ 1317{
1075 dSTACKLEVEL; 1318 dSTACKLEVEL;
1076 1319
1077 /* sometimes transfer is only called to set idle_sp */ 1320 /* sometimes transfer is only called to set idle_sp */
1078 if (expect_false (!next)) 1321 if (expect_false (!next))
1079 { 1322 {
1080 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1081 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1082 } 1325 }
1083 else if (expect_true (prev != next)) 1326 else if (expect_true (prev != next))
1084 { 1327 {
1085 coro_cctx *prev__cctx; 1328 coro_cctx *prev__cctx;
1086 1329
1087 if (expect_false (prev->flags & CF_NEW)) 1330 if (expect_false (prev->flags & CF_NEW))
1088 { 1331 {
1089 /* create a new empty context */ 1332 /* create a new empty/source context */
1090 Newz (0, prev->cctx, 1, coro_cctx); 1333 prev->cctx = cctx_new_empty ();
1091 prev->flags &= ~CF_NEW; 1334 prev->flags &= ~CF_NEW;
1092 prev->flags |= CF_RUNNING; 1335 prev->flags |= CF_RUNNING;
1093 } 1336 }
1094 1337
1095 prev->flags &= ~CF_RUNNING; 1338 prev->flags &= ~CF_RUNNING;
1096 next->flags |= CF_RUNNING; 1339 next->flags |= CF_RUNNING;
1097 1340
1098 LOCK; 1341 /* first get rid of the old state */
1342 save_perl (aTHX_ prev);
1099 1343
1100 if (expect_false (next->flags & CF_NEW)) 1344 if (expect_false (next->flags & CF_NEW))
1101 { 1345 {
1102 /* need to start coroutine */ 1346 /* need to start coroutine */
1103 next->flags &= ~CF_NEW; 1347 next->flags &= ~CF_NEW;
1104 /* first get rid of the old state */
1105 save_perl (aTHX_ prev);
1106 /* setup coroutine call */ 1348 /* setup coroutine call */
1107 coro_setup (aTHX_ next); 1349 coro_setup (aTHX_ next);
1108 } 1350 }
1109 else 1351 else
1352 load_perl (aTHX_ next);
1353
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */
1357 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel
1359 && !(prev__cctx->flags & CC_TRACE)
1360 && !force_cctx
1361 ))
1110 { 1362 {
1111 /* coroutine already started */
1112 save_perl (aTHX_ prev);
1113 load_perl (aTHX_ next);
1114 }
1115
1116 prev__cctx = prev->cctx;
1117
1118 /* possibly "free" the cctx */
1119 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1120 {
1121 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1122 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1123 1365
1124 prev->cctx = 0; 1366 prev->cctx = 0;
1125 1367
1126 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1127 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1128 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1370 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1371 if (!next->cctx)
1129 next->cctx = cctx_get (aTHX); 1372 next->cctx = cctx_get (aTHX);
1130 1373
1131 cctx_put (prev__cctx); 1374 cctx_put (prev__cctx);
1132 } 1375 }
1133 1376
1134 ++next->usecount; 1377 ++next->usecount;
1135 1378
1136 if (expect_true (!next->cctx)) 1379 if (expect_true (!next->cctx))
1137 next->cctx = cctx_get (aTHX); 1380 next->cctx = cctx_get (aTHX);
1381
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1383 transfer_next = next;
1138 1384
1139 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1140 { 1386 {
1141 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1142 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1143 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1144 } 1390 }
1145 1391
1146 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1147 UNLOCK;
1148
1149 if (expect_false (prev->throw || next->throw))
1150 {
1151 struct coro *coro = SvSTATE (coro_current);
1152
1153 if (coro->throw)
1154 {
1155 SV *exception = coro->throw;
1156 coro->throw = 0;
1157 sv_setsv (ERRSV, exception);
1158 croak (0);
1159 }
1160 }
1161 } 1393 }
1162} 1394}
1163 1395
1164struct transfer_args
1165{
1166 struct coro *prev, *next;
1167};
1168
1169#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1170#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1171 1398
1172/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1173 1400
1174static int 1401static int
1175coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1176{ 1403{
1177 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1178 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1179 1409
1180 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1181 1411
1182 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1183 { 1413 {
1184 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1185 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1186 LOCK;
1187 --coro_nready; 1416 --coro_nready;
1188 UNLOCK;
1189 } 1417 }
1190 else 1418 else
1191 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1192 1420
1193 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1194 { 1422 {
1195 struct coro temp; 1423 struct coro temp;
1196 1424
1197 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1198 croak ("FATAL: tried to destroy currently running coroutine");
1199 1426
1200 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1201 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1202 1429
1203 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1204 1431
1205 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1206 1433
1207 coro->slot = 0; 1434 coro->slot = 0;
1208 } 1435 }
… …
1254# define MGf_DUP 0 1481# define MGf_DUP 0
1255#endif 1482#endif
1256}; 1483};
1257 1484
1258static void 1485static void
1259prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1260{ 1487{
1261 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1262 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1263 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1264} 1491}
1265 1492
1266static void 1493static void
1267api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1268{ 1495{
1269 dTHX;
1270 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1271 1497
1272 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1273 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1274} 1500}
1275 1501
1276/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1277 1503
1278static void 1504INLINE void
1279coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1280{ 1506{
1281 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1282} 1508}
1283 1509
1284static SV * 1510INLINE SV *
1285coro_deq (pTHX_ int min_prio) 1511coro_deq (pTHX)
1286{ 1512{
1287 int prio = PRIO_MAX - PRIO_MIN; 1513 int prio;
1288 1514
1289 min_prio -= PRIO_MIN;
1290 if (min_prio < 0)
1291 min_prio = 0;
1292
1293 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1294 if (AvFILLp (coro_ready [prio]) >= 0) 1516 if (AvFILLp (coro_ready [prio]) >= 0)
1295 return av_shift (coro_ready [prio]); 1517 return av_shift (coro_ready [prio]);
1296 1518
1297 return 0; 1519 return 0;
1298} 1520}
1299 1521
1300static int 1522static int
1301api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1302{ 1524{
1303 dTHX;
1304 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1305 1528
1306 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1307 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1308 1531
1309 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1311 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1312 return 0; 1535 return 0;
1313 1536
1314 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1315 1538
1316 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1317 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1318 ++coro_nready; 1543 ++coro_nready;
1319 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1320 1563
1321 return 1; 1564 return 1;
1322} 1565}
1323 1566
1324static int 1567static int
1325api_is_ready (SV *coro_sv) 1568api_is_ready (pTHX_ SV *coro_sv)
1326{ 1569{
1327 dTHX;
1328 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1570 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1329} 1571}
1330 1572
1331static void 1573INLINE void
1332prepare_schedule (pTHX_ struct transfer_args *ta) 1574prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1333{ 1575{
1334 SV *prev_sv, *next_sv; 1576 SV *prev_sv, *next_sv;
1335 1577
1336 for (;;) 1578 for (;;)
1337 { 1579 {
1338 LOCK;
1339 next_sv = coro_deq (aTHX_ PRIO_MIN); 1580 next_sv = coro_deq (aTHX);
1340 1581
1341 /* nothing to schedule: call the idle handler */ 1582 /* nothing to schedule: call the idle handler */
1342 if (expect_false (!next_sv)) 1583 if (expect_false (!next_sv))
1343 { 1584 {
1344 dSP; 1585 dSP;
1345 UNLOCK;
1346 1586
1347 ENTER; 1587 ENTER;
1348 SAVETMPS; 1588 SAVETMPS;
1349 1589
1350 PUSHMARK (SP); 1590 PUSHMARK (SP);
1351 PUTBACK; 1591 PUTBACK;
1352 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1353 1594
1354 FREETMPS; 1595 FREETMPS;
1355 LEAVE; 1596 LEAVE;
1356 continue; 1597 continue;
1357 } 1598 }
1358 1599
1359 ta->next = SvSTATE (next_sv); 1600 ta->next = SvSTATE_hv (next_sv);
1360 1601
1361 /* cannot transfer to destroyed coros, skip and look for next */ 1602 /* cannot transfer to destroyed coros, skip and look for next */
1362 if (expect_false (ta->next->flags & CF_DESTROYED)) 1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1363 { 1604 {
1364 UNLOCK;
1365 SvREFCNT_dec (next_sv); 1605 SvREFCNT_dec (next_sv);
1366 /* coro_nready is already taken care of by destroy */ 1606 /* coro_nready has already been taken care of by destroy */
1367 continue; 1607 continue;
1368 } 1608 }
1369 1609
1370 --coro_nready; 1610 --coro_nready;
1371 UNLOCK;
1372 break; 1611 break;
1373 } 1612 }
1374 1613
1375 /* free this only after the transfer */ 1614 /* free this only after the transfer */
1376 prev_sv = SvRV (coro_current); 1615 prev_sv = SvRV (coro_current);
1377 ta->prev = SvSTATE (prev_sv); 1616 ta->prev = SvSTATE_hv (prev_sv);
1378 TRANSFER_CHECK (*ta); 1617 TRANSFER_CHECK (*ta);
1379 assert (ta->next->flags & CF_READY); 1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1380 ta->next->flags &= ~CF_READY; 1619 ta->next->flags &= ~CF_READY;
1381 SvRV_set (coro_current, next_sv); 1620 SvRV_set (coro_current, next_sv);
1382 1621
1383 LOCK;
1384 free_coro_mortal (aTHX); 1622 free_coro_mortal (aTHX);
1385 coro_mortal = prev_sv; 1623 coro_mortal = prev_sv;
1386 UNLOCK;
1387} 1624}
1388 1625
1389static void 1626INLINE void
1390prepare_cede (pTHX_ struct transfer_args *ta) 1627prepare_cede (pTHX_ struct coro_transfer_args *ta)
1391{ 1628{
1392 api_ready (coro_current); 1629 api_ready (aTHX_ coro_current);
1393 prepare_schedule (aTHX_ ta); 1630 prepare_schedule (aTHX_ ta);
1394} 1631}
1395 1632
1633INLINE void
1634prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1635{
1636 SV *prev = SvRV (coro_current);
1637
1638 if (coro_nready)
1639 {
1640 prepare_schedule (aTHX_ ta);
1641 api_ready (aTHX_ prev);
1642 }
1643 else
1644 prepare_nop (aTHX_ ta);
1645}
1646
1647static void
1648api_schedule (pTHX)
1649{
1650 struct coro_transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1396static int 1656static int
1397prepare_cede_notself (pTHX_ struct transfer_args *ta) 1657api_cede (pTHX)
1398{ 1658{
1399 if (coro_nready) 1659 struct coro_transfer_args ta;
1400 { 1660
1401 SV *prev = SvRV (coro_current);
1402 prepare_schedule (aTHX_ ta); 1661 prepare_cede (aTHX_ &ta);
1403 api_ready (prev); 1662
1663 if (expect_true (ta.prev != ta.next))
1664 {
1665 TRANSFER (ta, 1);
1404 return 1; 1666 return 1;
1405 } 1667 }
1406 else 1668 else
1407 return 0; 1669 return 0;
1408} 1670}
1409 1671
1410static void
1411api_schedule (void)
1412{
1413 dTHX;
1414 struct transfer_args ta;
1415
1416 prepare_schedule (aTHX_ &ta);
1417 TRANSFER (ta);
1418}
1419
1420static int 1672static int
1421api_cede (void) 1673api_cede_notself (pTHX)
1422{ 1674{
1423 dTHX; 1675 if (coro_nready)
1676 {
1424 struct transfer_args ta; 1677 struct coro_transfer_args ta;
1425 1678
1426 prepare_cede (aTHX_ &ta); 1679 prepare_cede_notself (aTHX_ &ta);
1427
1428 if (expect_true (ta.prev != ta.next))
1429 {
1430 TRANSFER (ta); 1680 TRANSFER (ta, 1);
1431 return 1; 1681 return 1;
1432 } 1682 }
1433 else 1683 else
1434 return 0; 1684 return 0;
1435} 1685}
1436 1686
1437static int 1687static void
1438api_cede_notself (void)
1439{
1440 dTHX;
1441 struct transfer_args ta;
1442
1443 if (prepare_cede_notself (aTHX_ &ta))
1444 {
1445 TRANSFER (ta);
1446 return 1;
1447 }
1448 else
1449 return 0;
1450}
1451
1452static void
1453api_trace (SV *coro_sv, int flags) 1688api_trace (pTHX_ SV *coro_sv, int flags)
1454{ 1689{
1455 dTHX;
1456 struct coro *coro = SvSTATE (coro_sv); 1690 struct coro *coro = SvSTATE (coro_sv);
1457 1691
1458 if (flags & CC_TRACE) 1692 if (flags & CC_TRACE)
1459 { 1693 {
1460 if (!coro->cctx) 1694 if (!coro->cctx)
1461 coro->cctx = cctx_new (); 1695 coro->cctx = cctx_new_run ();
1462 else if (!(coro->cctx->flags & CC_TRACE)) 1696 else if (!(coro->cctx->flags & CC_TRACE))
1463 croak ("cannot enable tracing on coroutine with custom stack"); 1697 croak ("cannot enable tracing on coroutine with custom stack,");
1464 1698
1465 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1466 } 1700 }
1467 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1468 { 1702 {
… …
1473 else 1707 else
1474 coro->slot->runops = RUNOPS_DEFAULT; 1708 coro->slot->runops = RUNOPS_DEFAULT;
1475 } 1709 }
1476} 1710}
1477 1711
1712/*****************************************************************************/
1713/* PerlIO::cede */
1714
1715typedef struct
1716{
1717 PerlIOBuf base;
1718 NV next, every;
1719} PerlIOCede;
1720
1721static IV
1722PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1723{
1724 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1725
1726 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1727 self->next = nvtime () + self->every;
1728
1729 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1730}
1731
1732static SV *
1733PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736
1737 return newSVnv (self->every);
1738}
1739
1740static IV
1741PerlIOCede_flush (pTHX_ PerlIO *f)
1742{
1743 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1744 double now = nvtime ();
1745
1746 if (now >= self->next)
1747 {
1748 api_cede (aTHX);
1749 self->next = now + self->every;
1750 }
1751
1752 return PerlIOBuf_flush (aTHX_ f);
1753}
1754
1755static PerlIO_funcs PerlIO_cede =
1756{
1757 sizeof(PerlIO_funcs),
1758 "cede",
1759 sizeof(PerlIOCede),
1760 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1761 PerlIOCede_pushed,
1762 PerlIOBuf_popped,
1763 PerlIOBuf_open,
1764 PerlIOBase_binmode,
1765 PerlIOCede_getarg,
1766 PerlIOBase_fileno,
1767 PerlIOBuf_dup,
1768 PerlIOBuf_read,
1769 PerlIOBuf_unread,
1770 PerlIOBuf_write,
1771 PerlIOBuf_seek,
1772 PerlIOBuf_tell,
1773 PerlIOBuf_close,
1774 PerlIOCede_flush,
1775 PerlIOBuf_fill,
1776 PerlIOBase_eof,
1777 PerlIOBase_error,
1778 PerlIOBase_clearerr,
1779 PerlIOBase_setlinebuf,
1780 PerlIOBuf_get_base,
1781 PerlIOBuf_bufsiz,
1782 PerlIOBuf_get_ptr,
1783 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt,
1785};
1786
1787/*****************************************************************************/
1788
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP *
1800pp_restore (pTHX)
1801{
1802 dSP;
1803
1804 PUSHMARK (SP);
1805
1806 EXTEND (SP, 3);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813}
1814
1815static void
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, int adjust)
1993{
1994 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv);
1996
1997 count += adjust;
1998 SvIVX (count_sv) = count;
1999
2000 /* now wake up as many waiters as possible */
2001 while (count > 0 && AvFILLp (av) >= count)
2002 {
2003 SV *cb;
2004
2005 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av);
2009
2010 if (SvOBJECT (cb))
2011 api_ready (aTHX_ cb);
2012 else
2013 croak ("callbacks not yet supported");
2014
2015 SvREFCNT_dec (cb);
2016
2017 --count;
2018 }
2019}
2020
2021static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026}
2027
2028static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2030{
2031 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0];
2033
2034 if (SvIVX (count_sv) > 0)
2035 {
2036 SvSTATE_current->on_destroy = 0;
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2038 return 0;
2039 }
2040 else
2041 {
2042 int i;
2043 /* if we were woken up but can't down, we look through the whole */
2044 /* waiters list and only add us if we aren't in there already */
2045 /* this avoids some degenerate memory usage cases */
2046
2047 for (i = 1; i <= AvFILLp (av); ++i)
2048 if (AvARRAY (av)[i] == SvRV (coro_current))
2049 return 1;
2050
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1;
2053 }
2054}
2055
2056static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 AV *av = (AV *)SvRV (arg [0]);
2060
2061 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 {
2063 frame->data = (void *)av;
2064 frame->prepare = prepare_nop;
2065 }
2066 else
2067 {
2068 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2069
2070 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2071 frame->prepare = prepare_schedule;
2072
2073 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076 }
2077
2078 frame->check = slf_check_semaphore_down;
2079
2080}
2081
2082/*****************************************************************************/
2083
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2085
2086/* create a closure from XS, returns a code reference */
2087/* the arg can be accessed via GENSUB_ARG from the callback */
2088/* the callback must use dXSARGS/XSRETURN */
2089static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2091{
2092 CV *cv = (CV *)NEWSV (0, 0);
2093
2094 sv_upgrade ((SV *)cv, SVt_PVCV);
2095
2096 CvANON_on (cv);
2097 CvISXSUB_on (cv);
2098 CvXSUB (cv) = xsub;
2099 GENSUB_ARG = arg;
2100
2101 return newRV_noinc ((SV *)cv);
2102}
2103
2104/*****************************************************************************/
2105
1478MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1479 2107
1480PROTOTYPES: DISABLE 2108PROTOTYPES: DISABLE
1481 2109
1482BOOT: 2110BOOT:
1483{ 2111{
1484#ifdef USE_ITHREADS 2112#ifdef USE_ITHREADS
1485 MUTEX_INIT (&coro_mutex); 2113# if CORO_PTHREAD
2114 coro_thx = PERL_GET_CONTEXT;
2115# endif
1486#endif 2116#endif
1487 BOOT_PAGESIZE; 2117 BOOT_PAGESIZE;
1488 2118
1489 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1490 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1491 2121
1492 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2122 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1493 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2123 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2124 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1494 2125
1495 if (!PL_diehook) PL_diehook = SvREFCNT_inc (sv_diehook); 2126 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1496 if (!PL_warnhook) PL_warnhook = SvREFCNT_inc (sv_warnhook); 2127 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2128 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1497 2129
1498 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2130 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1499 2131
1500 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2132 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1501 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2133 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1506 main_top_env = PL_top_env; 2138 main_top_env = PL_top_env;
1507 2139
1508 while (main_top_env->je_prev) 2140 while (main_top_env->je_prev)
1509 main_top_env = main_top_env->je_prev; 2141 main_top_env = main_top_env->je_prev;
1510 2142
2143 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf,
2148 newSVpv ("coro_slf", 0), 0);
2149
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf,
2152 newSVpv ("coro schedule like function", 0), 0);
2153 }
2154
1511 coroapi.ver = CORO_API_VERSION; 2155 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION;
2157
1512 coroapi.transfer = api_transfer; 2158 coroapi.transfer = api_transfer;
2159
2160 coroapi.sv_state = SvSTATE_;
2161 coroapi.execute_slf = api_execute_slf;
2162 coroapi.prepare_nop = prepare_nop;
2163 coroapi.prepare_schedule = prepare_schedule;
2164 coroapi.prepare_cede = prepare_cede;
2165 coroapi.prepare_cede_notself = prepare_cede_notself;
2166
2167 {
2168 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2169
2170 if (!svp) croak ("Time::HiRes is required");
2171 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2172
2173 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2174 }
1513 2175
1514 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1515} 2177}
1516 2178
1517SV * 2179SV *
1518new (char *klass, ...) 2180new (char *klass, ...)
1519 CODE: 2181 CODE:
1520{ 2182{
1521 struct coro *coro; 2183 struct coro *coro;
2184 MAGIC *mg;
1522 HV *hv; 2185 HV *hv;
1523 int i; 2186 int i;
1524 2187
1525 Newz (0, coro, 1, struct coro); 2188 Newz (0, coro, 1, struct coro);
1526 coro->args = newAV (); 2189 coro->args = newAV ();
… …
1529 if (coro_first) coro_first->prev = coro; 2192 if (coro_first) coro_first->prev = coro;
1530 coro->next = coro_first; 2193 coro->next = coro_first;
1531 coro_first = coro; 2194 coro_first = coro;
1532 2195
1533 coro->hv = hv = newHV (); 2196 coro->hv = hv = newHV ();
1534 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2197 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198 mg->mg_flags |= MGf_DUP;
1535 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1536 2200
1537 av_extend (coro->args, items - 1); 2201 av_extend (coro->args, items - 1);
1538 for (i = 1; i < items; i++) 2202 for (i = 1; i < items; i++)
1539 av_push (coro->args, newSVsv (ST (i))); 2203 av_push (coro->args, newSVsv (ST (i)));
1540} 2204}
1541 OUTPUT: 2205 OUTPUT:
1542 RETVAL 2206 RETVAL
1543 2207
1544# these not obviously related functions are all rolled into the same xs
1545# function to increase chances that they all will call transfer with the same
1546# stack offset
1547void 2208void
1548_set_stacklevel (...) 2209_set_stacklevel (...)
1549 ALIAS: 2210 CODE:
1550 Coro::State::transfer = 1 2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1551 Coro::schedule = 2
1552 Coro::cede = 3
1553 Coro::cede_notself = 4
1554 CODE:
1555{
1556 struct transfer_args ta;
1557 2212
1558 switch (ix) 2213void
1559 { 2214transfer (...)
1560 case 0: 2215 PROTOTYPE: $$
1561 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2216 CODE:
1562 ta.next = 0; 2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1563 break;
1564
1565 case 1:
1566 if (items != 2)
1567 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1568
1569 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1570 break;
1571
1572 case 2:
1573 prepare_schedule (aTHX_ &ta);
1574 break;
1575
1576 case 3:
1577 prepare_cede (aTHX_ &ta);
1578 break;
1579
1580 case 4:
1581 if (!prepare_cede_notself (aTHX_ &ta))
1582 XSRETURN_EMPTY;
1583
1584 break;
1585 }
1586
1587 BARRIER;
1588 TRANSFER (ta);
1589
1590 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1591 XSRETURN_YES;
1592}
1593 2218
1594bool 2219bool
1595_destroy (SV *coro_sv) 2220_destroy (SV *coro_sv)
1596 CODE: 2221 CODE:
1597 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1598 OUTPUT: 2223 OUTPUT:
1599 RETVAL 2224 RETVAL
1600 2225
1601void 2226void
1602_exit (code) 2227_exit (int code)
1603 int code
1604 PROTOTYPE: $ 2228 PROTOTYPE: $
1605 CODE: 2229 CODE:
1606 _exit (code); 2230 _exit (code);
1607 2231
1608int 2232int
1609cctx_stacksize (int new_stacksize = 0) 2233cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$
1610 CODE: 2235 CODE:
1611 RETVAL = coro_stacksize; 2236 RETVAL = cctx_stacksize;
1612 if (new_stacksize) 2237 if (new_stacksize)
2238 {
1613 coro_stacksize = new_stacksize; 2239 cctx_stacksize = new_stacksize;
2240 ++cctx_gen;
2241 }
1614 OUTPUT: 2242 OUTPUT:
1615 RETVAL 2243 RETVAL
1616 2244
1617int 2245int
2246cctx_max_idle (int max_idle = 0)
2247 PROTOTYPE: ;$
2248 CODE:
2249 RETVAL = cctx_max_idle;
2250 if (max_idle > 1)
2251 cctx_max_idle = max_idle;
2252 OUTPUT:
2253 RETVAL
2254
2255int
1618cctx_count () 2256cctx_count ()
2257 PROTOTYPE:
1619 CODE: 2258 CODE:
1620 RETVAL = cctx_count; 2259 RETVAL = cctx_count;
1621 OUTPUT: 2260 OUTPUT:
1622 RETVAL 2261 RETVAL
1623 2262
1624int 2263int
1625cctx_idle () 2264cctx_idle ()
2265 PROTOTYPE:
1626 CODE: 2266 CODE:
1627 RETVAL = cctx_idle; 2267 RETVAL = cctx_idle;
1628 OUTPUT: 2268 OUTPUT:
1629 RETVAL 2269 RETVAL
1630 2270
1631void 2271void
1632list () 2272list ()
2273 PROTOTYPE:
1633 PPCODE: 2274 PPCODE:
1634{ 2275{
1635 struct coro *coro; 2276 struct coro *coro;
1636 for (coro = coro_first; coro; coro = coro->next) 2277 for (coro = coro_first; coro; coro = coro->next)
1637 if (coro->hv) 2278 if (coro->hv)
… …
1642call (Coro::State coro, SV *coderef) 2283call (Coro::State coro, SV *coderef)
1643 ALIAS: 2284 ALIAS:
1644 eval = 1 2285 eval = 1
1645 CODE: 2286 CODE:
1646{ 2287{
1647 if (coro->mainstack) 2288 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1648 { 2289 {
1649 struct coro temp; 2290 struct coro temp;
1650 2291
1651 if (!(coro->flags & CF_RUNNING)) 2292 if (!(coro->flags & CF_RUNNING))
1652 { 2293 {
2294 PUTBACK;
1653 save_perl (aTHX_ &temp); 2295 save_perl (aTHX_ &temp);
1654 load_perl (aTHX_ coro); 2296 load_perl (aTHX_ coro);
1655 } 2297 }
1656 2298
1657 { 2299 {
1658 dSP; 2300 dSP;
1659 ENTER; 2301 ENTER;
1660 SAVETMPS; 2302 SAVETMPS;
2303 PUTBACK;
2304 PUSHSTACK;
1661 PUSHMARK (SP); 2305 PUSHMARK (SP);
1662 PUTBACK;
1663 2306
1664 if (ix) 2307 if (ix)
1665 eval_sv (coderef, 0); 2308 eval_sv (coderef, 0);
1666 else 2309 else
1667 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2310 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1668 2311
2312 POPSTACK;
1669 SPAGAIN; 2313 SPAGAIN;
1670 FREETMPS; 2314 FREETMPS;
1671 LEAVE; 2315 LEAVE;
1672 PUTBACK; 2316 PUTBACK;
1673 } 2317 }
1674 2318
1675 if (!(coro->flags & CF_RUNNING)) 2319 if (!(coro->flags & CF_RUNNING))
1676 { 2320 {
1677 save_perl (aTHX_ coro); 2321 save_perl (aTHX_ coro);
1678 load_perl (aTHX_ &temp); 2322 load_perl (aTHX_ &temp);
2323 SPAGAIN;
1679 } 2324 }
1680 } 2325 }
1681} 2326}
1682 2327
1683SV * 2328SV *
… …
1692 RETVAL = boolSV (coro->flags & ix); 2337 RETVAL = boolSV (coro->flags & ix);
1693 OUTPUT: 2338 OUTPUT:
1694 RETVAL 2339 RETVAL
1695 2340
1696void 2341void
2342throw (Coro::State self, SV *throw = &PL_sv_undef)
2343 PROTOTYPE: $;$
2344 CODE:
2345 SvREFCNT_dec (self->throw);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2347
2348void
1697api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags
1698 2352
1699SV * 2353SV *
1700has_stack (Coro::State coro) 2354has_cctx (Coro::State coro)
1701 PROTOTYPE: $ 2355 PROTOTYPE: $
1702 CODE: 2356 CODE:
1703 RETVAL = boolSV (!!coro->cctx); 2357 RETVAL = boolSV (!!coro->cctx);
1704 OUTPUT: 2358 OUTPUT:
1705 RETVAL 2359 RETVAL
… …
1710 CODE: 2364 CODE:
1711 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2365 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1712 OUTPUT: 2366 OUTPUT:
1713 RETVAL 2367 RETVAL
1714 2368
1715IV 2369UV
1716rss (Coro::State coro) 2370rss (Coro::State coro)
1717 PROTOTYPE: $ 2371 PROTOTYPE: $
1718 ALIAS: 2372 ALIAS:
1719 usecount = 1 2373 usecount = 1
1720 CODE: 2374 CODE:
… …
1724 case 1: RETVAL = coro->usecount; break; 2378 case 1: RETVAL = coro->usecount; break;
1725 } 2379 }
1726 OUTPUT: 2380 OUTPUT:
1727 RETVAL 2381 RETVAL
1728 2382
2383void
2384force_cctx ()
2385 PROTOTYPE:
2386 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0;
2388
2389void
2390swap_defsv (Coro::State self)
2391 PROTOTYPE: $
2392 ALIAS:
2393 swap_defav = 1
2394 CODE:
2395 if (!self->slot)
2396 croak ("cannot swap state with coroutine that has no saved state,");
2397 else
2398 {
2399 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401
2402 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 }
1729 2404
1730MODULE = Coro::State PACKAGE = Coro 2405MODULE = Coro::State PACKAGE = Coro
1731 2406
1732BOOT: 2407BOOT:
1733{ 2408{
1734 int i; 2409 int i;
1735 2410
1736 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1737 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1738 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1739 2414
1740 coro_current = coro_get_sv ("Coro::current", FALSE); 2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1741 SvREADONLY_on (coro_current); 2416 SvREADONLY_on (coro_current);
1742 2417
1743 coro_stash = gv_stashpv ("Coro", TRUE); 2418 coro_stash = gv_stashpv ("Coro", TRUE);
1744 2419
1745 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1751 2426
1752 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2427 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1753 coro_ready[i] = newAV (); 2428 coro_ready[i] = newAV ();
1754 2429
1755 { 2430 {
1756 SV *sv = perl_get_sv ("Coro::API", TRUE); 2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1757 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1758 2432
1759 coroapi.schedule = api_schedule; 2433 coroapi.schedule = api_schedule;
1760 coroapi.cede = api_cede; 2434 coroapi.cede = api_cede;
1761 coroapi.cede_notself = api_cede_notself; 2435 coroapi.cede_notself = api_cede_notself;
1762 coroapi.ready = api_ready; 2436 coroapi.ready = api_ready;
1763 coroapi.is_ready = api_is_ready; 2437 coroapi.is_ready = api_is_ready;
1764 coroapi.nready = &coro_nready; 2438 coroapi.nready = coro_nready;
1765 coroapi.current = coro_current; 2439 coroapi.current = coro_current;
1766 2440
1767 GCoroAPI = &coroapi; 2441 GCoroAPI = &coroapi;
1768 sv_setiv (sv, (IV)&coroapi); 2442 sv_setiv (sv, (IV)&coroapi);
1769 SvREADONLY_on (sv); 2443 SvREADONLY_on (sv);
1770 } 2444 }
1771} 2445}
2446
2447void
2448schedule (...)
2449 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2451
2452void
2453cede (...)
2454 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2456
2457void
2458cede_notself (...)
2459 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1772 2461
1773void 2462void
1774_set_current (SV *current) 2463_set_current (SV *current)
1775 PROTOTYPE: $ 2464 PROTOTYPE: $
1776 CODE: 2465 CODE:
1777 SvREFCNT_dec (SvRV (coro_current)); 2466 SvREFCNT_dec (SvRV (coro_current));
1778 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2467 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2468
2469void
2470_set_readyhook (SV *hook)
2471 PROTOTYPE: $
2472 CODE:
2473 SvREFCNT_dec (coro_readyhook);
2474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1779 2475
1780int 2476int
1781prio (Coro::State coro, int newprio = 0) 2477prio (Coro::State coro, int newprio = 0)
2478 PROTOTYPE: $;$
1782 ALIAS: 2479 ALIAS:
1783 nice = 1 2480 nice = 1
1784 CODE: 2481 CODE:
1785{ 2482{
1786 RETVAL = coro->prio; 2483 RETVAL = coro->prio;
… …
1801 2498
1802SV * 2499SV *
1803ready (SV *self) 2500ready (SV *self)
1804 PROTOTYPE: $ 2501 PROTOTYPE: $
1805 CODE: 2502 CODE:
1806 RETVAL = boolSV (api_ready (self)); 2503 RETVAL = boolSV (api_ready (aTHX_ self));
1807 OUTPUT: 2504 OUTPUT:
1808 RETVAL 2505 RETVAL
1809 2506
1810int 2507int
1811nready (...) 2508nready (...)
… …
1813 CODE: 2510 CODE:
1814 RETVAL = coro_nready; 2511 RETVAL = coro_nready;
1815 OUTPUT: 2512 OUTPUT:
1816 RETVAL 2513 RETVAL
1817 2514
1818void
1819throw (Coro::State self, SV *throw = &PL_sv_undef)
1820 PROTOTYPE: $;$
1821 CODE:
1822 SvREFCNT_dec (self->throw);
1823 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1824
1825# for async_pool speedup 2515# for async_pool speedup
1826void 2516void
1827_pool_1 (SV *cb) 2517_pool_1 (SV *cb)
1828 CODE: 2518 CODE:
1829{ 2519{
1830 struct coro *coro = SvSTATE (coro_current);
1831 HV *hv = (HV *)SvRV (coro_current); 2520 HV *hv = (HV *)SvRV (coro_current);
2521 struct coro *coro = SvSTATE_hv ((SV *)hv);
1832 AV *defav = GvAV (PL_defgv); 2522 AV *defav = GvAV (PL_defgv);
1833 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2523 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1834 AV *invoke_av; 2524 AV *invoke_av;
1835 int i, len; 2525 int i, len;
1836 2526
1837 if (!invoke) 2527 if (!invoke)
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
1838 croak ("\3async_pool terminate\2\n"); 2532 croak ("\3async_pool terminate\2\n");
2533 }
1839 2534
1840 SvREFCNT_dec (coro->saved_deffh); 2535 SvREFCNT_dec (coro->saved_deffh);
1841 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2536 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1842 2537
1843 hv_store (hv, "desc", sizeof ("desc") - 1, 2538 hv_store (hv, "desc", sizeof ("desc") - 1,
1844 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2539 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1845 2540
1846 invoke_av = (AV *)SvRV (invoke); 2541 invoke_av = (AV *)SvRV (invoke);
… …
1850 2545
1851 if (len > 0) 2546 if (len > 0)
1852 { 2547 {
1853 av_fill (defav, len - 1); 2548 av_fill (defav, len - 1);
1854 for (i = 0; i < len; ++i) 2549 for (i = 0; i < len; ++i)
1855 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2550 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1856 } 2551 }
1857
1858 SvREFCNT_dec (invoke);
1859} 2552}
1860 2553
1861void 2554void
1862_pool_2 (SV *cb) 2555_pool_2 (SV *cb)
1863 CODE: 2556 CODE:
1864{ 2557{
1865 struct coro *coro = SvSTATE (coro_current); 2558 struct coro *coro = SvSTATE_current;
1866 2559
1867 sv_setsv (cb, &PL_sv_undef); 2560 sv_setsv (cb, &PL_sv_undef);
1868 2561
1869 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2562 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1870 coro->saved_deffh = 0; 2563 coro->saved_deffh = 0;
1871 2564
1872 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2565 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1873 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2566 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567 {
2568 SV *old = PL_diehook;
2569 PL_diehook = 0;
2570 SvREFCNT_dec (old);
1874 croak ("\3async_pool terminate\2\n"); 2571 croak ("\3async_pool terminate\2\n");
2572 }
1875 2573
1876 av_clear (GvAV (PL_defgv)); 2574 av_clear (GvAV (PL_defgv));
1877 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2575 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1878 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2576 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1879 2577
1880 coro->prio = 0; 2578 coro->prio = 0;
1881 2579
1882 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2580 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1883 api_trace (coro_current, 0); 2581 api_trace (aTHX_ coro_current, 0);
1884 2582
1885 av_push (av_async_pool, newSVsv (coro_current)); 2583 av_push (av_async_pool, newSVsv (coro_current));
1886} 2584}
1887 2585
1888 2586
1889MODULE = Coro::State PACKAGE = Coro::AIO 2587MODULE = Coro::State PACKAGE = Coro::AIO
1890 2588
1891SV * 2589void
1892_get_state () 2590_get_state (SV *self)
2591 PROTOTYPE: $
1893 CODE: 2592 PPCODE:
1894{ 2593{
1895 struct io_state *data; 2594 AV *defav = GvAV (PL_defgv);
1896 2595 AV *av = newAV ();
2596 int i;
1897 RETVAL = newSV (sizeof (struct io_state)); 2597 SV *data_sv = newSV (sizeof (struct io_state));
1898 data = (struct io_state *)SvPVX (RETVAL); 2598 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1899 SvCUR_set (RETVAL, sizeof (struct io_state)); 2599 SvCUR_set (data_sv, sizeof (struct io_state));
1900 SvPOK_only (RETVAL); 2600 SvPOK_only (data_sv);
1901 2601
1902 data->errorno = errno; 2602 data->errorno = errno;
1903 data->laststype = PL_laststype; 2603 data->laststype = PL_laststype;
1904 data->laststatval = PL_laststatval; 2604 data->laststatval = PL_laststatval;
1905 data->statcache = PL_statcache; 2605 data->statcache = PL_statcache;
2606
2607 av_extend (av, AvFILLp (defav) + 1 + 1);
2608
2609 for (i = 0; i <= AvFILLp (defav); ++i)
2610 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2611
2612 av_push (av, data_sv);
2613
2614 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616 api_ready (aTHX_ self);
1906} 2617}
1907 OUTPUT:
1908 RETVAL
1909 2618
1910void 2619void
1911_set_state (char *data_) 2620_set_state (SV *state)
1912 PROTOTYPE: $ 2621 PROTOTYPE: $
1913 CODE: 2622 PPCODE:
1914{ 2623{
1915 struct io_state *data = (void *)data_; 2624 AV *av = (AV *)SvRV (state);
2625 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626 int i;
1916 2627
1917 errno = data->errorno; 2628 errno = data->errorno;
1918 PL_laststype = data->laststype; 2629 PL_laststype = data->laststype;
1919 PL_laststatval = data->laststatval; 2630 PL_laststatval = data->laststatval;
1920 PL_statcache = data->statcache; 2631 PL_statcache = data->statcache;
1921}
1922 2632
2633 EXTEND (SP, AvFILLp (av));
2634 for (i = 0; i < AvFILLp (av); ++i)
2635 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636}
2637
2638
2639MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641BOOT:
2642 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644void
2645_schedule (...)
2646 CODE:
2647{
2648 static int incede;
2649
2650 api_cede_notself (aTHX);
2651
2652 ++incede;
2653 while (coro_nready >= incede && api_cede (aTHX))
2654 ;
2655
2656 sv_setsv (sv_activity, &PL_sv_undef);
2657 if (coro_nready >= incede)
2658 {
2659 PUSHMARK (SP);
2660 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2662 SPAGAIN;
2663 }
2664
2665 --incede;
2666}
2667
2668
2669MODULE = Coro::State PACKAGE = PerlIO::cede
2670
2671BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673
2674MODULE = Coro::State PACKAGE = Coro::Semaphore
2675
2676SV *
2677new (SV *klass, SV *count_ = 0)
2678 CODE:
2679{
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2681 AV *av = newAV ();
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2684}
2685 OUTPUT:
2686 RETVAL
2687
2688SV *
2689count (SV *self)
2690 CODE:
2691 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2692 OUTPUT:
2693 RETVAL
2694
2695void
2696up (SV *self, int adjust = 1)
2697 ALIAS:
2698 adjust = 1
2699 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701
2702void
2703down (SV *self)
2704 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2706
2707void
2708try (SV *self)
2709 PPCODE:
2710{
2711 AV *av = (AV *)SvRV (self);
2712 SV *count_sv = AvARRAY (av)[0];
2713 IV count = SvIVX (count_sv);
2714
2715 if (count > 0)
2716 {
2717 --count;
2718 SvIVX (count_sv) = count;
2719 XSRETURN_YES;
2720 }
2721 else
2722 XSRETURN_NO;
2723}
2724
2725void
2726waiters (SV *self)
2727 CODE:
2728{
2729 AV *av = (AV *)SvRV (self);
2730
2731 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2733 else
2734 {
2735 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1);
2737 for (i = 1; i <= AvFILLp (av); ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i]));
2739 }
2740}
2741

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