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Comparing Coro/Coro/State.xs (file contents):
Revision 1.198 by root, Sun Oct 7 03:58:37 2007 UTC vs.
Revision 1.288 by root, Mon Nov 17 07:14:50 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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
76/* 5.8.7 */ 104/* 5.8.7 */
77#ifndef SvRV_set 105#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
79#endif 107#endif
80 108
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 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 110# undef CORO_STACKGUARD
91#endif 111#endif
92 112
93#ifndef CORO_STACKGUARD 113#ifndef CORO_STACKGUARD
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 120#endif
101 121
102/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 123 * portable way as possible. */
104#define dSTACKLEVEL volatile char stacklevel 124#if __GNUC__ >= 4
105#define STACKLEVEL ((void *)&stacklevel) 125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
126#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
128#endif
106 129
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 130#define IN_DESTRUCT (PL_main_cv == Nullcv)
108 131
109#if __GNUC__ >= 3 132#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 133# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
113#else 136#else
114# define attribute(x) 137# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 138# define expect(expr,value) (expr)
139# define INLINE static
117#endif 140#endif
118 141
119#define expect_false(expr) expect ((expr) != 0, 0) 142#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 143#define expect_true(expr) expect ((expr) != 0, 1)
121 144
122#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
123 146
124#include "CoroAPI.h" 147#include "CoroAPI.h"
125 148
126#ifdef USE_ITHREADS 149#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 150# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 151static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 152# endif
153#endif
134 154
135/* helper storage struct for Coro::AIO */ 155static double (*nvtime)(); /* so why doesn't it take void? */
136struct io_state
137{
138 int errorno;
139 I32 laststype;
140 int laststatval;
141 Stat_t statcache;
142};
143 156
157static U32 cctx_gen;
144static size_t coro_stacksize = CORO_STACKSIZE; 158static size_t cctx_stacksize = CORO_STACKSIZE;
145static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
146static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
147static JMPENV *main_top_env; 161static JMPENV *main_top_env;
148static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
149static SV *coro_mortal; /* will be freed after next transfer */ 163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
150 164
151static GV *irsgv; /* $/ */ 165static GV *irsgv; /* $/ */
152static GV *stdoutgv; /* *STDOUT */ 166static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook;
168static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */
153 170
154/* async_pool helper stuff */ 171/* async_pool helper stuff */
155static SV *sv_pool_rss; 172static SV *sv_pool_rss;
156static SV *sv_pool_size; 173static SV *sv_pool_size;
157static AV *av_async_pool; 174static AV *av_async_pool;
175
176/* Coro::AnyEvent */
177static SV *sv_activity;
158 178
159static struct coro_cctx *cctx_first; 179static struct coro_cctx *cctx_first;
160static int cctx_count, cctx_idle; 180static int cctx_count, cctx_idle;
161 181
162enum { 182enum {
… …
167 CC_TRACE_LINE = 0x10, /* trace each statement */ 187 CC_TRACE_LINE = 0x10, /* trace each statement */
168 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
169}; 189};
170 190
171/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
172typedef struct coro_cctx { 192typedef struct coro_cctx
193{
173 struct coro_cctx *next; 194 struct coro_cctx *next;
174 195
175 /* the stack */ 196 /* the stack */
176 void *sptr; 197 void *sptr;
177 size_t ssize; 198 size_t ssize;
… …
180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 201 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 202 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
182 JMPENV *top_env; 203 JMPENV *top_env;
183 coro_context cctx; 204 coro_context cctx;
184 205
206 U32 gen;
185#if CORO_USE_VALGRIND 207#if CORO_USE_VALGRIND
186 int valgrind_id; 208 int valgrind_id;
187#endif 209#endif
188 unsigned char flags; 210 unsigned char flags;
189} coro_cctx; 211} coro_cctx;
… …
194 CF_NEW = 0x0004, /* has never been switched to */ 216 CF_NEW = 0x0004, /* has never been switched to */
195 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
196}; 218};
197 219
198/* the structure where most of the perl state is stored, overlaid on the cxstack */ 220/* the structure where most of the perl state is stored, overlaid on the cxstack */
199typedef struct { 221typedef struct
222{
200 SV *defsv; 223 SV *defsv;
201 AV *defav; 224 AV *defav;
202 SV *errsv; 225 SV *errsv;
203 SV *irsgv; 226 SV *irsgv;
204#define VAR(name,type) type name; 227#define VAR(name,type) type name;
… …
208 231
209#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
210 233
211/* this is a structure representing a perl-level coroutine */ 234/* this is a structure representing a perl-level coroutine */
212struct coro { 235struct coro {
213 /* the c coroutine allocated to this perl coroutine, if any */ 236 /* the C coroutine allocated to this perl coroutine, if any */
214 coro_cctx *cctx; 237 coro_cctx *cctx;
215 238
216 /* process data */ 239 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */
217 AV *mainstack; 241 AV *mainstack;
218 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
219 243
220 /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
221 AV *args; 245 int refcnt; /* coroutines are refcounted, yes */
222 int refcnt;
223 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
224 249
225 /* statistics */ 250 /* statistics */
226 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
227 252
228 /* coro process data */ 253 /* coro process data */
229 int prio; 254 int prio;
230 SV *throw; 255 SV *throw; /* exception to be thrown */
231 256
232 /* async_pool */ 257 /* async_pool */
233 SV *saved_deffh; 258 SV *saved_deffh;
234 259
235 /* linked list */ 260 /* linked list */
236 struct coro *next, *prev; 261 struct coro *next, *prev;
237 HV *hv; /* the perl hash associated with this coro, if any */
238}; 262};
239 263
240typedef struct coro *Coro__State; 264typedef struct coro *Coro__State;
241typedef struct coro *Coro__State_or_hashref; 265typedef struct coro *Coro__State_or_hashref;
266
267/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
242 272
243/** Coro ********************************************************************/ 273/** Coro ********************************************************************/
244 274
245#define PRIO_MAX 3 275#define PRIO_MAX 3
246#define PRIO_HIGH 1 276#define PRIO_HIGH 1
… …
249#define PRIO_IDLE -3 279#define PRIO_IDLE -3
250#define PRIO_MIN -4 280#define PRIO_MIN -4
251 281
252/* for Coro.pm */ 282/* for Coro.pm */
253static SV *coro_current; 283static SV *coro_current;
284static SV *coro_readyhook;
254static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 285static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
255static int coro_nready;
256static struct coro *coro_first; 286static struct coro *coro_first;
287#define coro_nready coroapi.nready
257 288
258/** lowlevel stuff **********************************************************/ 289/** lowlevel stuff **********************************************************/
290
291static SV *
292coro_get_sv (pTHX_ const char *name, int create)
293{
294#if PERL_VERSION_ATLEAST (5,10,0)
295 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
296 get_sv (name, create);
297#endif
298 return get_sv (name, create);
299}
300
301static AV *
302coro_get_av (pTHX_ const char *name, int create)
303{
304#if PERL_VERSION_ATLEAST (5,10,0)
305 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
306 get_av (name, create);
307#endif
308 return get_av (name, create);
309}
310
311static HV *
312coro_get_hv (pTHX_ const char *name, int create)
313{
314#if PERL_VERSION_ATLEAST (5,10,0)
315 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
316 get_hv (name, create);
317#endif
318 return get_hv (name, create);
319}
259 320
260static AV * 321static AV *
261coro_clone_padlist (pTHX_ CV *cv) 322coro_clone_padlist (pTHX_ CV *cv)
262{ 323{
263 AV *padlist = CvPADLIST (cv); 324 AV *padlist = CvPADLIST (cv);
264 AV *newpadlist, *newpad; 325 AV *newpadlist, *newpad;
265 326
266 newpadlist = newAV (); 327 newpadlist = newAV ();
267 AvREAL_off (newpadlist); 328 AvREAL_off (newpadlist);
268#if PERL_VERSION_ATLEAST (5,9,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
269 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
270#else 331#else
271 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
272#endif 333#endif
273 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
274 --AvFILLp (padlist); 335 --AvFILLp (padlist);
275 336
276 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
277 av_store (newpadlist, 1, (SV *)newpad); 338 av_store (newpadlist, 1, (SV *)newpad);
278 339
279 return newpadlist; 340 return newpadlist;
280} 341}
281 342
… …
311 372
312 /* casting is fun. */ 373 /* casting is fun. */
313 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
314 free_padlist (aTHX_ padlist); 375 free_padlist (aTHX_ padlist);
315 376
316 SvREFCNT_dec (av); 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
317 378
318 return 0; 379 return 0;
319} 380}
320 381
382#define CORO_MAGIC_type_cv 26
321#define PERL_MAGIC_coro PERL_MAGIC_ext 383#define CORO_MAGIC_type_state PERL_MAGIC_ext
322 384
323static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 385static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0,
387 coro_cv_free
388};
324 389
325#define CORO_MAGIC(cv) \ 390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
326 SvMAGIC (cv) \ 392 ? SvMAGIC (sv) \
327 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 393 : mg_find (sv, type))
328 ? SvMAGIC (cv) \ 394
329 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
330 : 0 398 : 0)
331 399
332static struct coro * 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
333SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
334{ 405{
335 HV *stash; 406 HV *stash;
336 MAGIC *mg; 407 MAGIC *mg;
337 408
… …
347 /* very slow, but rare, check */ 418 /* very slow, but rare, check */
348 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
349 croak ("Coro::State object required"); 420 croak ("Coro::State object required");
350 } 421 }
351 422
352 mg = CORO_MAGIC (coro); 423 mg = CORO_MAGIC_state (coro);
353 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
354} 425}
355 426
356#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
357 428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432
358/* the next two functions merely cache the padlists */ 433/* the next two functions merely cache the padlists */
359static void 434static void
360get_padlist (pTHX_ CV *cv) 435get_padlist (pTHX_ CV *cv)
361{ 436{
362 MAGIC *mg = CORO_MAGIC (cv); 437 MAGIC *mg = CORO_MAGIC_cv (cv);
363 AV *av; 438 AV *av;
364 439
365 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 440 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
366 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 441 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
367 else 442 else
368 { 443 {
369#if CORO_PREFER_PERL_FUNCTIONS 444#if CORO_PREFER_PERL_FUNCTIONS
370 /* this is probably cleaner, but also slower? */ 445 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */
371 CV *cp = Perl_cv_clone (cv); 447 CV *cp = Perl_cv_clone (cv);
372 CvPADLIST (cv) = CvPADLIST (cp); 448 CvPADLIST (cv) = CvPADLIST (cp);
373 CvPADLIST (cp) = 0; 449 CvPADLIST (cp) = 0;
374 SvREFCNT_dec (cp); 450 SvREFCNT_dec (cp);
375#else 451#else
… …
379} 455}
380 456
381static void 457static void
382put_padlist (pTHX_ CV *cv) 458put_padlist (pTHX_ CV *cv)
383{ 459{
384 MAGIC *mg = CORO_MAGIC (cv); 460 MAGIC *mg = CORO_MAGIC_cv (cv);
385 AV *av; 461 AV *av;
386 462
387 if (expect_false (!mg)) 463 if (expect_false (!mg))
388 { 464 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
389 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
390 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
391 mg->mg_virtual = &vtbl_coro;
392 mg->mg_obj = (SV *)newAV ();
393 }
394 465
395 av = (AV *)mg->mg_obj; 466 av = (AV *)mg->mg_obj;
396 467
397 if (expect_false (AvFILLp (av) >= AvMAX (av))) 468 if (expect_false (AvFILLp (av) >= AvMAX (av)))
398 av_extend (av, AvMAX (av) + 1); 469 av_extend (av, AvMAX (av) + 1);
… …
432 CvPADLIST (cv) = (AV *)POPs; 503 CvPADLIST (cv) = (AV *)POPs;
433 } 504 }
434 505
435 PUTBACK; 506 PUTBACK;
436 } 507 }
508
509 slf_frame = c->slf_frame;
510 coro_throw = c->throw;
437} 511}
438 512
439static void 513static void
440save_perl (pTHX_ Coro__State c) 514save_perl (pTHX_ Coro__State c)
441{ 515{
516 c->throw = coro_throw;
517 c->slf_frame = slf_frame;
518
442 { 519 {
443 dSP; 520 dSP;
444 I32 cxix = cxstack_ix; 521 I32 cxix = cxstack_ix;
445 PERL_CONTEXT *ccstk = cxstack; 522 PERL_CONTEXT *ccstk = cxstack;
446 PERL_SI *top_si = PL_curstackinfo; 523 PERL_SI *top_si = PL_curstackinfo;
… …
464 541
465 if (expect_true (CvDEPTH (cv))) 542 if (expect_true (CvDEPTH (cv)))
466 { 543 {
467 EXTEND (SP, 3); 544 EXTEND (SP, 3);
468 PUSHs ((SV *)CvPADLIST (cv)); 545 PUSHs ((SV *)CvPADLIST (cv));
469 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 546 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
470 PUSHs ((SV *)cv); 547 PUSHs ((SV *)cv);
471 548
472 CvDEPTH (cv) = 0; 549 CvDEPTH (cv) = 0;
473 get_padlist (aTHX_ cv); 550 get_padlist (aTHX_ cv);
474 } 551 }
… …
485 562
486 PUTBACK; 563 PUTBACK;
487 } 564 }
488 565
489 /* allocate some space on the context stack for our purposes */ 566 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
490 { 571 {
491 /* we manually unroll here, as usually 2 slots is enough */
492 int i; 572 int i;
493 if (SLOT_COUNT >= 1) CXINC;
494 if (SLOT_COUNT >= 2) CXINC;
495 if (SLOT_COUNT >= 3) CXINC;
496 for (i = 3; i < SLOT_COUNT; ++i) 573 for (i = 3; i < SLOT_COUNT; ++i)
497 CXINC; 574 CXINC;
498
499 cxstack_ix -= SLOT_COUNT; /* undo allocation */
500 } 575 }
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */
501 577
502 c->mainstack = PL_mainstack; 578 c->mainstack = PL_mainstack;
503 579
504 { 580 {
505 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
… …
514 #undef VAR 590 #undef VAR
515 } 591 }
516} 592}
517 593
518/* 594/*
519 * allocate various perl stacks. This is an exact copy 595 * allocate various perl stacks. This is almost an exact copy
520 * of perl.c:init_stacks, except that it uses less memory 596 * of perl.c:init_stacks, except that it uses less memory
521 * on the (sometimes correct) assumption that coroutines do 597 * on the (sometimes correct) assumption that coroutines do
522 * not usually need a lot of stackspace. 598 * not usually need a lot of stackspace.
523 */ 599 */
524#if CORO_PREFER_PERL_FUNCTIONS 600#if CORO_PREFER_PERL_FUNCTIONS
… …
555 631
556 New(54,PL_savestack,24,ANY); 632 New(54,PL_savestack,24,ANY);
557 PL_savestack_ix = 0; 633 PL_savestack_ix = 0;
558 PL_savestack_max = 24; 634 PL_savestack_max = 24;
559 635
560#if !PERL_VERSION_ATLEAST (5,9,0) 636#if !PERL_VERSION_ATLEAST (5,10,0)
561 New(54,PL_retstack,4,OP*); 637 New(54,PL_retstack,4,OP*);
562 PL_retstack_ix = 0; 638 PL_retstack_ix = 0;
563 PL_retstack_max = 4; 639 PL_retstack_max = 4;
564#endif 640#endif
565} 641}
… …
567 643
568/* 644/*
569 * destroy the stacks, the callchain etc... 645 * destroy the stacks, the callchain etc...
570 */ 646 */
571static void 647static void
572coro_destroy_stacks (pTHX) 648coro_destruct_stacks (pTHX)
573{ 649{
574 while (PL_curstackinfo->si_next) 650 while (PL_curstackinfo->si_next)
575 PL_curstackinfo = PL_curstackinfo->si_next; 651 PL_curstackinfo = PL_curstackinfo->si_next;
576 652
577 while (PL_curstackinfo) 653 while (PL_curstackinfo)
… …
588 664
589 Safefree (PL_tmps_stack); 665 Safefree (PL_tmps_stack);
590 Safefree (PL_markstack); 666 Safefree (PL_markstack);
591 Safefree (PL_scopestack); 667 Safefree (PL_scopestack);
592 Safefree (PL_savestack); 668 Safefree (PL_savestack);
593#if !PERL_VERSION_ATLEAST (5,9,0) 669#if !PERL_VERSION_ATLEAST (5,10,0)
594 Safefree (PL_retstack); 670 Safefree (PL_retstack);
595#endif 671#endif
596} 672}
597 673
598static size_t 674static size_t
… …
614 #undef VAR 690 #undef VAR
615 } 691 }
616 else 692 else
617 slot = coro->slot; 693 slot = coro->slot;
618 694
695 if (slot)
696 {
619 rss += sizeof (slot->curstackinfo); 697 rss += sizeof (slot->curstackinfo);
620 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
621 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
622 rss += slot->tmps_max * sizeof (SV *); 700 rss += slot->tmps_max * sizeof (SV *);
623 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
624 rss += slot->scopestack_max * sizeof (I32); 702 rss += slot->scopestack_max * sizeof (I32);
625 rss += slot->savestack_max * sizeof (ANY); 703 rss += slot->savestack_max * sizeof (ANY);
626 704
627#if !PERL_VERSION_ATLEAST (5,9,0) 705#if !PERL_VERSION_ATLEAST (5,10,0)
628 rss += slot->retstack_max * sizeof (OP *); 706 rss += slot->retstack_max * sizeof (OP *);
629#endif 707#endif
708 }
630 } 709 }
631 710
632 return rss; 711 return rss;
633} 712}
634 713
635/** coroutine stack handling ************************************************/ 714/** coroutine stack handling ************************************************/
636 715
716static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
717static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
718static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
719
720/* apparently < 5.8.8 */
721#ifndef MgPV_nolen_const
722#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
723 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
724 (const char*)(mg)->mg_ptr)
725#endif
726
727/*
728 * This overrides the default magic get method of %SIG elements.
729 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
730 * and instead of tryign to save and restore the hash elements, we just provide
731 * readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */
637static void 736static int
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{
739 const char *s = MgPV_nolen_const (mg);
740
741 if (*s == '_')
742 {
743 SV **svp = 0;
744
745 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
746 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
747
748 if (svp)
749 {
750 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
751 return 0;
752 }
753 }
754
755 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
756}
757
758static int
759coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
760{
761 const char *s = MgPV_nolen_const (mg);
762
763 if (*s == '_')
764 {
765 SV **svp = 0;
766
767 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
768 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
769
770 if (svp)
771 {
772 SV *old = *svp;
773 *svp = 0;
774 SvREFCNT_dec (old);
775 return 0;
776 }
777 }
778
779 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
780}
781
782static int
783coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
784{
785 const char *s = MgPV_nolen_const (mg);
786
787 if (*s == '_')
788 {
789 SV **svp = 0;
790
791 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793
794 if (svp)
795 {
796 SV *old = *svp;
797 *svp = newSVsv (sv);
798 SvREFCNT_dec (old);
799 return 0;
800 }
801 }
802
803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804}
805
806static void
807prepare_nop (pTHX_ struct coro_transfer_args *ta)
808{
809 /* kind of mega-hacky, but works */
810 ta->next = ta->prev = (struct coro *)ta;
811}
812
813static int
814slf_check_nop (pTHX_ struct CoroSLF *frame)
815{
816 return 0;
817}
818
819static void NOINLINE /* noinline to keep it out of the transfer fast path */
638coro_setup (pTHX_ struct coro *coro) 820coro_setup (pTHX_ struct coro *coro)
639{ 821{
640 /* 822 /*
641 * emulate part of the perl startup here. 823 * emulate part of the perl startup here.
642 */ 824 */
… …
649 PL_curpm = 0; 831 PL_curpm = 0;
650 PL_curpad = 0; 832 PL_curpad = 0;
651 PL_localizing = 0; 833 PL_localizing = 0;
652 PL_dirty = 0; 834 PL_dirty = 0;
653 PL_restartop = 0; 835 PL_restartop = 0;
654 PL_diehook = 0; 836#if PERL_VERSION_ATLEAST (5,10,0)
655 PL_warnhook = 0; 837 PL_parser = 0;
838#endif
839
840 /* recreate the die/warn hooks */
841 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
842 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
656 843
657 GvSV (PL_defgv) = newSV (0); 844 GvSV (PL_defgv) = newSV (0);
658 GvAV (PL_defgv) = coro->args; coro->args = 0; 845 GvAV (PL_defgv) = coro->args; coro->args = 0;
659 GvSV (PL_errgv) = newSV (0); 846 GvSV (PL_errgv) = newSV (0);
660 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 847 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
661 PL_rs = newSVsv (GvSV (irsgv)); 848 PL_rs = newSVsv (GvSV (irsgv));
662 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
663 850
664 { 851 {
665 dSP; 852 dSP;
666 LOGOP myop; 853 UNOP myop;
667 854
668 Zero (&myop, 1, LOGOP); 855 Zero (&myop, 1, UNOP);
669 myop.op_next = Nullop; 856 myop.op_next = Nullop;
670 myop.op_flags = OPf_WANT_VOID; 857 myop.op_flags = OPf_WANT_VOID;
671 858
672 PUSHMARK (SP); 859 PUSHMARK (SP);
673 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
675 PL_op = (OP *)&myop; 862 PL_op = (OP *)&myop;
676 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
677 SPAGAIN; 864 SPAGAIN;
678 } 865 }
679 866
680 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 867 /* this newly created coroutine might be run on an existing cctx which most
681} 868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869 */
870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
682 872
873 coro_throw = coro->throw;
874}
875
683static void 876static void
684coro_destroy (pTHX_ struct coro *coro) 877coro_destruct (pTHX_ struct coro *coro)
685{ 878{
686 if (!IN_DESTRUCT) 879 if (!IN_DESTRUCT)
687 { 880 {
688 /* restore all saved variables and stuff */ 881 /* restore all saved variables and stuff */
689 LEAVE_SCOPE (0); 882 LEAVE_SCOPE (0);
… …
709 902
710 SvREFCNT_dec (PL_diehook); 903 SvREFCNT_dec (PL_diehook);
711 SvREFCNT_dec (PL_warnhook); 904 SvREFCNT_dec (PL_warnhook);
712 905
713 SvREFCNT_dec (coro->saved_deffh); 906 SvREFCNT_dec (coro->saved_deffh);
714 SvREFCNT_dec (coro->throw); 907 SvREFCNT_dec (coro_throw);
715 908
716 coro_destroy_stacks (aTHX); 909 coro_destruct_stacks (aTHX);
717} 910}
718 911
719static void 912INLINE void
720free_coro_mortal (pTHX) 913free_coro_mortal (pTHX)
721{ 914{
722 if (expect_true (coro_mortal)) 915 if (expect_true (coro_mortal))
723 { 916 {
724 SvREFCNT_dec (coro_mortal); 917 SvREFCNT_dec (coro_mortal);
… …
729static int 922static int
730runops_trace (pTHX) 923runops_trace (pTHX)
731{ 924{
732 COP *oldcop = 0; 925 COP *oldcop = 0;
733 int oldcxix = -2; 926 int oldcxix = -2;
734 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
735 coro_cctx *cctx = coro->cctx; 928 coro_cctx *cctx = coro->cctx;
736 929
737 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
738 { 931 {
739 PERL_ASYNC_CHECK (); 932 PERL_ASYNC_CHECK ();
… …
758 : cx->blk_gimme == G_SCALAR ? bot + 1 951 : cx->blk_gimme == G_SCALAR ? bot + 1
759 : bot; 952 : bot;
760 953
761 av_extend (av, top - bot); 954 av_extend (av, top - bot);
762 while (bot < top) 955 while (bot < top)
763 av_push (av, SvREFCNT_inc (*bot++)); 956 av_push (av, SvREFCNT_inc_NN (*bot++));
764 957
765 PL_runops = RUNOPS_DEFAULT; 958 PL_runops = RUNOPS_DEFAULT;
766 ENTER; 959 ENTER;
767 SAVETMPS; 960 SAVETMPS;
768 EXTEND (SP, 3); 961 EXTEND (SP, 3);
… …
806 SAVETMPS; 999 SAVETMPS;
807 EXTEND (SP, 3); 1000 EXTEND (SP, 3);
808 PUSHMARK (SP); 1001 PUSHMARK (SP);
809 PUSHs (&PL_sv_yes); 1002 PUSHs (&PL_sv_yes);
810 PUSHs (fullname); 1003 PUSHs (fullname);
811 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
812 PUTBACK; 1005 PUTBACK;
813 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
814 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
815 SPAGAIN; 1008 SPAGAIN;
816 FREETMPS; 1009 FREETMPS;
… …
848 1041
849 TAINT_NOT; 1042 TAINT_NOT;
850 return 0; 1043 return 0;
851} 1044}
852 1045
1046static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1048{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0;
1051}
1052
853/* inject a fake call to Coro::State::_cctx_init into the execution */ 1053/* inject a fake call to Coro::State::_cctx_init into the execution */
854/* _cctx_init should be careful, as it could be called at almost any time */ 1054/* _cctx_init should be careful, as it could be called at almost any time */
855/* during execution of a perl program */ 1055/* during execution of a perl program */
1056/* also initialises PL_top_env */
856static void NOINLINE 1057static void NOINLINE
857prepare_cctx (pTHX_ coro_cctx *cctx) 1058cctx_prepare (pTHX_ coro_cctx *cctx)
858{ 1059{
859 dSP; 1060 dSP;
860 LOGOP myop; 1061 UNOP myop;
861 1062
862 PL_top_env = &PL_start_env; 1063 PL_top_env = &PL_start_env;
863 1064
864 if (cctx->flags & CC_TRACE) 1065 if (cctx->flags & CC_TRACE)
865 PL_runops = runops_trace; 1066 PL_runops = runops_trace;
866 1067
867 Zero (&myop, 1, LOGOP); 1068 Zero (&myop, 1, UNOP);
868 myop.op_next = PL_op; 1069 myop.op_next = PL_op;
869 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
870 1071
871 PUSHMARK (SP); 1072 PUSHMARK (SP);
872 EXTEND (SP, 2); 1073 EXTEND (SP, 2);
873 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1074 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
874 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
875 PUTBACK; 1076 PUTBACK;
876 PL_op = (OP *)&myop; 1077 PL_op = (OP *)&myop;
877 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
878 SPAGAIN; 1079 SPAGAIN;
879} 1080}
880 1081
1082/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void
1084transfer_tail (pTHX)
1085{
1086 free_coro_mortal (aTHX);
1087}
1088
881/* 1089/*
882 * this is a _very_ stripped down perl interpreter ;) 1090 * this is a _very_ stripped down perl interpreter ;)
883 */ 1091 */
884static void 1092static void
885coro_run (void *arg) 1093cctx_run (void *arg)
886{ 1094{
1095#ifdef USE_ITHREADS
1096# if CORO_PTHREAD
1097 PERL_SET_CONTEXT (coro_thx);
1098# endif
1099#endif
1100 {
887 dTHX; 1101 dTHX;
888 1102
889 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1103 /* normally we would need to skip the entersub here */
890 UNLOCK; 1104 /* not doing so will re-execute it, which is exactly what we want */
891
892 /* we now skip the entersub that lead to transfer() */
893 PL_op = PL_op->op_next; 1105 /* PL_nop = PL_nop->op_next */
894 1106
895 /* inject a fake subroutine call to cctx_init */ 1107 /* inject a fake subroutine call to cctx_init */
896 prepare_cctx (aTHX_ (coro_cctx *)arg); 1108 cctx_prepare (aTHX_ (coro_cctx *)arg);
897 1109
1110 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX);
1112
898 /* somebody or something will hit me for both perl_run and PL_restartop */ 1113 /* somebody or something will hit me for both perl_run and PL_restartop */
899 PL_restartop = PL_op; 1114 PL_restartop = PL_op;
900 perl_run (PL_curinterp); 1115 perl_run (PL_curinterp);
901 1116
902 /* 1117 /*
903 * If perl-run returns we assume exit() was being called or the coro 1118 * If perl-run returns we assume exit() was being called or the coro
904 * fell off the end, which seems to be the only valid (non-bug) 1119 * fell off the end, which seems to be the only valid (non-bug)
905 * reason for perl_run to return. We try to exit by jumping to the 1120 * reason for perl_run to return. We try to exit by jumping to the
906 * bootstrap-time "top" top_env, as we cannot restore the "main" 1121 * bootstrap-time "top" top_env, as we cannot restore the "main"
907 * coroutine as Coro has no such concept 1122 * coroutine as Coro has no such concept
908 */ 1123 */
909 PL_top_env = main_top_env; 1124 PL_top_env = main_top_env;
910 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 }
911} 1127}
912 1128
913static coro_cctx * 1129static coro_cctx *
914cctx_new () 1130cctx_new ()
915{ 1131{
916 coro_cctx *cctx; 1132 coro_cctx *cctx;
1133
1134 ++cctx_count;
1135 New (0, cctx, 1, coro_cctx);
1136
1137 cctx->gen = cctx_gen;
1138 cctx->flags = 0;
1139 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1140
1141 return cctx;
1142}
1143
1144/* create a new cctx only suitable as source */
1145static coro_cctx *
1146cctx_new_empty ()
1147{
1148 coro_cctx *cctx = cctx_new ();
1149
1150 cctx->sptr = 0;
1151 coro_create (&cctx->cctx, 0, 0, 0, 0);
1152
1153 return cctx;
1154}
1155
1156/* create a new cctx suitable as destination/running a perl interpreter */
1157static coro_cctx *
1158cctx_new_run ()
1159{
1160 coro_cctx *cctx = cctx_new ();
917 void *stack_start; 1161 void *stack_start;
918 size_t stack_size; 1162 size_t stack_size;
919 1163
920 ++cctx_count;
921
922 Newz (0, cctx, 1, coro_cctx);
923
924#if HAVE_MMAP 1164#if HAVE_MMAP
925
926 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1165 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
927 /* mmap supposedly does allocate-on-write for us */ 1166 /* mmap supposedly does allocate-on-write for us */
928 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
929 1168
930 if (cctx->sptr != (void *)-1) 1169 if (cctx->sptr != (void *)-1)
931 { 1170 {
932# if CORO_STACKGUARD 1171 #if CORO_STACKGUARD
933 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
934# endif 1173 #endif
935 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1174 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
936 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1175 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
937 cctx->flags |= CC_MAPPED; 1176 cctx->flags |= CC_MAPPED;
938 } 1177 }
939 else 1178 else
940#endif 1179#endif
941 { 1180 {
942 cctx->ssize = coro_stacksize * (long)sizeof (long); 1181 cctx->ssize = cctx_stacksize * (long)sizeof (long);
943 New (0, cctx->sptr, coro_stacksize, long); 1182 New (0, cctx->sptr, cctx_stacksize, long);
944 1183
945 if (!cctx->sptr) 1184 if (!cctx->sptr)
946 { 1185 {
947 perror ("FATAL: unable to allocate stack for coroutine"); 1186 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
948 _exit (EXIT_FAILURE); 1187 _exit (EXIT_FAILURE);
949 } 1188 }
950 1189
951 stack_start = cctx->sptr; 1190 stack_start = cctx->sptr;
952 stack_size = cctx->ssize; 1191 stack_size = cctx->ssize;
953 } 1192 }
954 1193
955 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1194 #if CORO_USE_VALGRIND
1195 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1196 #endif
1197
956 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1198 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
957 1199
958 return cctx; 1200 return cctx;
959} 1201}
960 1202
961static void 1203static void
… …
963{ 1205{
964 if (!cctx) 1206 if (!cctx)
965 return; 1207 return;
966 1208
967 --cctx_count; 1209 --cctx_count;
1210 coro_destroy (&cctx->cctx);
968 1211
1212 /* coro_transfer creates new, empty cctx's */
1213 if (cctx->sptr)
1214 {
969#if CORO_USE_VALGRIND 1215 #if CORO_USE_VALGRIND
970 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1216 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
971#endif 1217 #endif
972 1218
973#if HAVE_MMAP 1219#if HAVE_MMAP
974 if (cctx->flags & CC_MAPPED) 1220 if (cctx->flags & CC_MAPPED)
975 munmap (cctx->sptr, cctx->ssize); 1221 munmap (cctx->sptr, cctx->ssize);
976 else 1222 else
977#endif 1223#endif
978 Safefree (cctx->sptr); 1224 Safefree (cctx->sptr);
1225 }
979 1226
980 Safefree (cctx); 1227 Safefree (cctx);
981} 1228}
982 1229
983/* wether this cctx should be destructed */ 1230/* wether this cctx should be destructed */
984#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1231#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
985 1232
986static coro_cctx * 1233static coro_cctx *
987cctx_get (pTHX) 1234cctx_get (pTHX)
988{ 1235{
989 while (expect_true (cctx_first)) 1236 while (expect_true (cctx_first))
… …
996 return cctx; 1243 return cctx;
997 1244
998 cctx_destroy (cctx); 1245 cctx_destroy (cctx);
999 } 1246 }
1000 1247
1001 return cctx_new (); 1248 return cctx_new_run ();
1002} 1249}
1003 1250
1004static void 1251static void
1005cctx_put (coro_cctx *cctx) 1252cctx_put (coro_cctx *cctx)
1006{ 1253{
1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1255
1007 /* free another cctx if overlimit */ 1256 /* free another cctx if overlimit */
1008 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1257 if (expect_false (cctx_idle >= cctx_max_idle))
1009 { 1258 {
1010 coro_cctx *first = cctx_first; 1259 coro_cctx *first = cctx_first;
1011 cctx_first = first->next; 1260 cctx_first = first->next;
1012 --cctx_idle; 1261 --cctx_idle;
1013 1262
… …
1022/** coroutine switching *****************************************************/ 1271/** coroutine switching *****************************************************/
1023 1272
1024static void 1273static void
1025transfer_check (pTHX_ struct coro *prev, struct coro *next) 1274transfer_check (pTHX_ struct coro *prev, struct coro *next)
1026{ 1275{
1276 /* TODO: throwing up here is considered harmful */
1277
1027 if (expect_true (prev != next)) 1278 if (expect_true (prev != next))
1028 { 1279 {
1029 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1030 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1031 1282
1032 if (expect_false (next->flags & CF_RUNNING)) 1283 if (expect_false (next->flags & CF_RUNNING))
1033 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1034 1285
1035 if (expect_false (next->flags & CF_DESTROYED)) 1286 if (expect_false (next->flags & CF_DESTROYED))
1036 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1037 1288
1038 if (
1039#if PERL_VERSION_ATLEAST (5,9,0) 1289#if !PERL_VERSION_ATLEAST (5,10,0)
1040 expect_false (PL_parser)
1041#else
1042 expect_false (PL_lex_state != LEX_NOTPARSING) 1290 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1043#endif
1044 )
1045 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif
1046 } 1293 }
1047} 1294}
1048 1295
1049/* always use the TRANSFER macro */ 1296/* always use the TRANSFER macro */
1050static void NOINLINE 1297static void NOINLINE /* noinline so we have a fixed stackframe */
1051transfer (pTHX_ struct coro *prev, struct coro *next) 1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1052{ 1299{
1053 dSTACKLEVEL; 1300 dSTACKLEVEL;
1054 1301
1055 /* sometimes transfer is only called to set idle_sp */ 1302 /* sometimes transfer is only called to set idle_sp */
1056 if (expect_false (!next)) 1303 if (expect_false (!next))
1057 { 1304 {
1058 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1059 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1060 } 1307 }
1061 else if (expect_true (prev != next)) 1308 else if (expect_true (prev != next))
1062 { 1309 {
1063 coro_cctx *prev__cctx; 1310 coro_cctx *prev__cctx;
1064 1311
1065 if (expect_false (prev->flags & CF_NEW)) 1312 if (expect_false (prev->flags & CF_NEW))
1066 { 1313 {
1067 /* create a new empty context */ 1314 /* create a new empty/source context */
1068 Newz (0, prev->cctx, 1, coro_cctx); 1315 prev->cctx = cctx_new_empty ();
1069 prev->flags &= ~CF_NEW; 1316 prev->flags &= ~CF_NEW;
1070 prev->flags |= CF_RUNNING; 1317 prev->flags |= CF_RUNNING;
1071 } 1318 }
1072 1319
1073 prev->flags &= ~CF_RUNNING; 1320 prev->flags &= ~CF_RUNNING;
1074 next->flags |= CF_RUNNING; 1321 next->flags |= CF_RUNNING;
1075 1322
1076 LOCK; 1323 /* first get rid of the old state */
1324 save_perl (aTHX_ prev);
1077 1325
1078 if (expect_false (next->flags & CF_NEW)) 1326 if (expect_false (next->flags & CF_NEW))
1079 { 1327 {
1080 /* need to start coroutine */ 1328 /* need to start coroutine */
1081 next->flags &= ~CF_NEW; 1329 next->flags &= ~CF_NEW;
1082 /* first get rid of the old state */
1083 save_perl (aTHX_ prev);
1084 /* setup coroutine call */ 1330 /* setup coroutine call */
1085 coro_setup (aTHX_ next); 1331 coro_setup (aTHX_ next);
1086 } 1332 }
1087 else 1333 else
1334 load_perl (aTHX_ next);
1335
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */
1339 if (expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel
1341 && !(prev__cctx->flags & CC_TRACE)
1342 && !force_cctx
1343 ))
1088 { 1344 {
1089 /* coroutine already started */
1090 save_perl (aTHX_ prev);
1091 load_perl (aTHX_ next);
1092 }
1093
1094 prev__cctx = prev->cctx;
1095
1096 /* possibly "free" the cctx */
1097 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1098 {
1099 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1100 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1101 1347
1102 prev->cctx = 0; 1348 prev->cctx = 0;
1103 1349
1104 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1105 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1106 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1352 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1353 if (!next->cctx)
1107 next->cctx = cctx_get (aTHX); 1354 next->cctx = cctx_get (aTHX);
1108 1355
1109 cctx_put (prev__cctx); 1356 cctx_put (prev__cctx);
1110 } 1357 }
1111 1358
1112 ++next->usecount; 1359 ++next->usecount;
… …
1119 prev__cctx->top_env = PL_top_env; 1366 prev__cctx->top_env = PL_top_env;
1120 PL_top_env = next->cctx->top_env; 1367 PL_top_env = next->cctx->top_env;
1121 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1122 } 1369 }
1123 1370
1124 free_coro_mortal (aTHX); 1371 transfer_tail (aTHX);
1125 UNLOCK;
1126
1127 if (expect_false (prev->throw || next->throw))
1128 {
1129 struct coro *coro = SvSTATE (coro_current);
1130
1131 if (coro->throw)
1132 {
1133 SV *exception = coro->throw;
1134 coro->throw = 0;
1135 sv_setsv (ERRSV, exception);
1136 croak (0);
1137 }
1138 }
1139 } 1372 }
1140} 1373}
1141 1374
1142struct transfer_args
1143{
1144 struct coro *prev, *next;
1145};
1146
1147#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1148#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1149 1377
1150/** high level stuff ********************************************************/ 1378/** high level stuff ********************************************************/
1151 1379
1152static int 1380static int
1153coro_state_destroy (pTHX_ struct coro *coro) 1381coro_state_destroy (pTHX_ struct coro *coro)
1154{ 1382{
1155 if (coro->flags & CF_DESTROYED) 1383 if (coro->flags & CF_DESTROYED)
1156 return 0; 1384 return 0;
1385
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro);
1157 1388
1158 coro->flags |= CF_DESTROYED; 1389 coro->flags |= CF_DESTROYED;
1159 1390
1160 if (coro->flags & CF_READY) 1391 if (coro->flags & CF_READY)
1161 { 1392 {
1162 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1393 /* reduce nready, as destroying a ready coro effectively unreadies it */
1163 /* alternative: look through all ready queues and remove the coro */ 1394 /* alternative: look through all ready queues and remove the coro */
1164 LOCK;
1165 --coro_nready; 1395 --coro_nready;
1166 UNLOCK;
1167 } 1396 }
1168 else 1397 else
1169 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1170 1399
1171 if (coro->mainstack && coro->mainstack != main_mainstack) 1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1172 { 1401 {
1173 struct coro temp; 1402 struct coro temp;
1174 1403
1175 if (coro->flags & CF_RUNNING) 1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1176 croak ("FATAL: tried to destroy currently running coroutine");
1177 1405
1178 save_perl (aTHX_ &temp); 1406 save_perl (aTHX_ &temp);
1179 load_perl (aTHX_ coro); 1407 load_perl (aTHX_ coro);
1180 1408
1181 coro_destroy (aTHX_ coro); 1409 coro_destruct (aTHX_ coro);
1182 1410
1183 load_perl (aTHX_ &temp); 1411 load_perl (aTHX_ &temp);
1184 1412
1185 coro->slot = 0; 1413 coro->slot = 0;
1186 } 1414 }
… …
1232# define MGf_DUP 0 1460# define MGf_DUP 0
1233#endif 1461#endif
1234}; 1462};
1235 1463
1236static void 1464static void
1237prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1465prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1238{ 1466{
1239 ta->prev = SvSTATE (prev_sv); 1467 ta->prev = SvSTATE (prev_sv);
1240 ta->next = SvSTATE (next_sv); 1468 ta->next = SvSTATE (next_sv);
1241 TRANSFER_CHECK (*ta); 1469 TRANSFER_CHECK (*ta);
1242} 1470}
1243 1471
1244static void 1472static void
1245api_transfer (SV *prev_sv, SV *next_sv) 1473api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1246{ 1474{
1247 dTHX;
1248 struct transfer_args ta; 1475 struct coro_transfer_args ta;
1249 1476
1250 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1477 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1251 TRANSFER (ta); 1478 TRANSFER (ta, 1);
1252} 1479}
1253 1480
1254/** Coro ********************************************************************/ 1481/** Coro ********************************************************************/
1255 1482
1256static void 1483INLINE void
1257coro_enq (pTHX_ SV *coro_sv) 1484coro_enq (pTHX_ struct coro *coro)
1258{ 1485{
1259 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1260} 1487}
1261 1488
1262static SV * 1489INLINE SV *
1263coro_deq (pTHX_ int min_prio) 1490coro_deq (pTHX)
1264{ 1491{
1265 int prio = PRIO_MAX - PRIO_MIN; 1492 int prio;
1266 1493
1267 min_prio -= PRIO_MIN;
1268 if (min_prio < 0)
1269 min_prio = 0;
1270
1271 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1272 if (AvFILLp (coro_ready [prio]) >= 0) 1495 if (AvFILLp (coro_ready [prio]) >= 0)
1273 return av_shift (coro_ready [prio]); 1496 return av_shift (coro_ready [prio]);
1274 1497
1275 return 0; 1498 return 0;
1276} 1499}
1277 1500
1278static int 1501static int
1279api_ready (SV *coro_sv) 1502api_ready (pTHX_ SV *coro_sv)
1280{ 1503{
1281 dTHX;
1282 struct coro *coro; 1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1283 1507
1284 if (SvROK (coro_sv)) 1508 if (SvROK (coro_sv))
1285 coro_sv = SvRV (coro_sv); 1509 coro_sv = SvRV (coro_sv);
1286 1510
1287 coro = SvSTATE (coro_sv); 1511 coro = SvSTATE (coro_sv);
… …
1289 if (coro->flags & CF_READY) 1513 if (coro->flags & CF_READY)
1290 return 0; 1514 return 0;
1291 1515
1292 coro->flags |= CF_READY; 1516 coro->flags |= CF_READY;
1293 1517
1294 LOCK; 1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1295 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro);
1296 ++coro_nready; 1522 ++coro_nready;
1297 UNLOCK; 1523
1524 if (sv_hook)
1525 {
1526 dSP;
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1298 1542
1299 return 1; 1543 return 1;
1300} 1544}
1301 1545
1302static int 1546static int
1303api_is_ready (SV *coro_sv) 1547api_is_ready (pTHX_ SV *coro_sv)
1304{ 1548{
1305 dTHX;
1306 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1549 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1307} 1550}
1308 1551
1309static void 1552INLINE void
1310prepare_schedule (pTHX_ struct transfer_args *ta) 1553prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1311{ 1554{
1312 SV *prev_sv, *next_sv; 1555 SV *prev_sv, *next_sv;
1313 1556
1314 for (;;) 1557 for (;;)
1315 { 1558 {
1316 LOCK;
1317 next_sv = coro_deq (aTHX_ PRIO_MIN); 1559 next_sv = coro_deq (aTHX);
1318 1560
1319 /* nothing to schedule: call the idle handler */ 1561 /* nothing to schedule: call the idle handler */
1320 if (expect_false (!next_sv)) 1562 if (expect_false (!next_sv))
1321 { 1563 {
1322 dSP; 1564 dSP;
1323 UNLOCK;
1324 1565
1325 ENTER; 1566 ENTER;
1326 SAVETMPS; 1567 SAVETMPS;
1327 1568
1328 PUSHMARK (SP); 1569 PUSHMARK (SP);
1329 PUTBACK; 1570 PUTBACK;
1330 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1331 1573
1332 FREETMPS; 1574 FREETMPS;
1333 LEAVE; 1575 LEAVE;
1334 continue; 1576 continue;
1335 } 1577 }
1336 1578
1337 ta->next = SvSTATE (next_sv); 1579 ta->next = SvSTATE_hv (next_sv);
1338 1580
1339 /* cannot transfer to destroyed coros, skip and look for next */ 1581 /* cannot transfer to destroyed coros, skip and look for next */
1340 if (expect_false (ta->next->flags & CF_DESTROYED)) 1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1341 { 1583 {
1342 UNLOCK;
1343 SvREFCNT_dec (next_sv); 1584 SvREFCNT_dec (next_sv);
1344 /* coro_nready is already taken care of by destroy */ 1585 /* coro_nready has already been taken care of by destroy */
1345 continue; 1586 continue;
1346 } 1587 }
1347 1588
1348 --coro_nready; 1589 --coro_nready;
1349 UNLOCK;
1350 break; 1590 break;
1351 } 1591 }
1352 1592
1353 /* free this only after the transfer */ 1593 /* free this only after the transfer */
1354 prev_sv = SvRV (coro_current); 1594 prev_sv = SvRV (coro_current);
1355 ta->prev = SvSTATE (prev_sv); 1595 ta->prev = SvSTATE_hv (prev_sv);
1356 TRANSFER_CHECK (*ta); 1596 TRANSFER_CHECK (*ta);
1357 assert (ta->next->flags & CF_READY); 1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1358 ta->next->flags &= ~CF_READY; 1598 ta->next->flags &= ~CF_READY;
1359 SvRV_set (coro_current, next_sv); 1599 SvRV_set (coro_current, next_sv);
1360 1600
1361 LOCK;
1362 free_coro_mortal (aTHX); 1601 free_coro_mortal (aTHX);
1363 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1364 UNLOCK;
1365} 1603}
1366 1604
1367static void 1605INLINE void
1368prepare_cede (pTHX_ struct transfer_args *ta) 1606prepare_cede (pTHX_ struct coro_transfer_args *ta)
1369{ 1607{
1370 api_ready (coro_current); 1608 api_ready (aTHX_ coro_current);
1371 prepare_schedule (aTHX_ ta); 1609 prepare_schedule (aTHX_ ta);
1372} 1610}
1373 1611
1612INLINE void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{
1615 SV *prev = SvRV (coro_current);
1616
1617 if (coro_nready)
1618 {
1619 prepare_schedule (aTHX_ ta);
1620 api_ready (aTHX_ prev);
1621 }
1622 else
1623 prepare_nop (aTHX_ ta);
1624}
1625
1626static void
1627api_schedule (pTHX)
1628{
1629 struct coro_transfer_args ta;
1630
1631 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1);
1633}
1634
1374static int 1635static int
1375prepare_cede_notself (pTHX_ struct transfer_args *ta) 1636api_cede (pTHX)
1376{ 1637{
1377 if (coro_nready) 1638 struct coro_transfer_args ta;
1378 { 1639
1379 SV *prev = SvRV (coro_current);
1380 prepare_schedule (aTHX_ ta); 1640 prepare_cede (aTHX_ &ta);
1381 api_ready (prev); 1641
1642 if (expect_true (ta.prev != ta.next))
1643 {
1644 TRANSFER (ta, 1);
1382 return 1; 1645 return 1;
1383 } 1646 }
1384 else 1647 else
1385 return 0; 1648 return 0;
1386} 1649}
1387 1650
1388static void
1389api_schedule (void)
1390{
1391 dTHX;
1392 struct transfer_args ta;
1393
1394 prepare_schedule (aTHX_ &ta);
1395 TRANSFER (ta);
1396}
1397
1398static int 1651static int
1399api_cede (void) 1652api_cede_notself (pTHX)
1400{ 1653{
1401 dTHX; 1654 if (coro_nready)
1655 {
1402 struct transfer_args ta; 1656 struct coro_transfer_args ta;
1403 1657
1404 prepare_cede (aTHX_ &ta); 1658 prepare_cede_notself (aTHX_ &ta);
1405
1406 if (expect_true (ta.prev != ta.next))
1407 {
1408 TRANSFER (ta); 1659 TRANSFER (ta, 1);
1409 return 1; 1660 return 1;
1410 } 1661 }
1411 else 1662 else
1412 return 0; 1663 return 0;
1413} 1664}
1414 1665
1415static int 1666static void
1416api_cede_notself (void)
1417{
1418 dTHX;
1419 struct transfer_args ta;
1420
1421 if (prepare_cede_notself (aTHX_ &ta))
1422 {
1423 TRANSFER (ta);
1424 return 1;
1425 }
1426 else
1427 return 0;
1428}
1429
1430static void
1431api_trace (SV *coro_sv, int flags) 1667api_trace (pTHX_ SV *coro_sv, int flags)
1432{ 1668{
1433 dTHX;
1434 struct coro *coro = SvSTATE (coro_sv); 1669 struct coro *coro = SvSTATE (coro_sv);
1435 1670
1436 if (flags & CC_TRACE) 1671 if (flags & CC_TRACE)
1437 { 1672 {
1438 if (!coro->cctx) 1673 if (!coro->cctx)
1439 coro->cctx = cctx_new (); 1674 coro->cctx = cctx_new_run ();
1440 else if (!(coro->cctx->flags & CC_TRACE)) 1675 else if (!(coro->cctx->flags & CC_TRACE))
1441 croak ("cannot enable tracing on coroutine with custom stack"); 1676 croak ("cannot enable tracing on coroutine with custom stack,");
1442 1677
1443 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1444 } 1679 }
1445 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1446 { 1681 {
… …
1451 else 1686 else
1452 coro->slot->runops = RUNOPS_DEFAULT; 1687 coro->slot->runops = RUNOPS_DEFAULT;
1453 } 1688 }
1454} 1689}
1455 1690
1691/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */
1693
1694static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1695static const CV *slf_cv;
1696static SV **slf_argv;
1697static int slf_argc, slf_arga; /* count, allocated */
1698static I32 slf_ax; /* top of stack, for restore */
1699
1700/* this restores the stack in the case we patched the entersub, to */
1701/* recreate the stack frame as perl will on following calls */
1702/* since entersub cleared the stack */
1703static OP *
1704pp_restore (pTHX)
1705{
1706 int i;
1707 SV **SP = PL_stack_base + slf_ax;
1708
1709 PUSHMARK (SP);
1710
1711 EXTEND (SP, slf_argc + 1);
1712
1713 for (i = 0; i < slf_argc; ++i)
1714 PUSHs (sv_2mortal (slf_argv [i]));
1715
1716 PUSHs ((SV *)CvGV (slf_cv));
1717
1718 RETURNOP (slf_restore.op_first);
1719}
1720
1721static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{
1740 SV **arg = (SV **)slf_frame.data;
1741
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1743}
1744
1745static void
1746slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1747{
1748 if (items != 2)
1749 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1750
1751 frame->prepare = slf_prepare_transfer;
1752 frame->check = slf_check_nop;
1753 frame->data = (void *)arg; /* let's hope it will stay valid */
1754}
1755
1756static void
1757slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1758{
1759 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop;
1761}
1762
1763static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{
1766 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop;
1768}
1769
1770static void
1771slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1772{
1773 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop;
1775}
1776
1777/* we hijack an hopefully unused CV flag for our purposes */
1778#define CVf_SLF 0x4000
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */
1863 if (expect_false (coro_throw))
1864 {
1865 SV *exception = sv_2mortal (coro_throw);
1866
1867 coro_throw = 0;
1868 sv_setsv (ERRSV, exception);
1869 croak (0);
1870 }
1871
1872 return NORMAL;
1873}
1874
1875static void
1876api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1877{
1878 int i;
1879 SV **arg = PL_stack_base + ax;
1880 int items = PL_stack_sp - arg + 1;
1881
1882 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1883
1884 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1885 && PL_op->op_ppaddr != pp_slf)
1886 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1887
1888 CvFLAGS (cv) |= CVf_SLF;
1889 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1890 slf_cv = cv;
1891
1892 /* we patch the op, and then re-run the whole call */
1893 /* we have to put the same argument on the stack for this to work */
1894 /* and this will be done by pp_restore */
1895 slf_restore.op_next = (OP *)&slf_restore;
1896 slf_restore.op_type = OP_CUSTOM;
1897 slf_restore.op_ppaddr = pp_restore;
1898 slf_restore.op_first = PL_op;
1899
1900 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1901
1902 if (PL_op->op_flags & OPf_STACKED)
1903 {
1904 if (items > slf_arga)
1905 {
1906 slf_arga = items;
1907 free (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *));
1909 }
1910
1911 slf_argc = items;
1912
1913 for (i = 0; i < items; ++i)
1914 slf_argv [i] = SvREFCNT_inc (arg [i]);
1915 }
1916 else
1917 slf_argc = 0;
1918
1919 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1921
1922 PL_op = (OP *)&slf_restore;
1923}
1924
1925/*****************************************************************************/
1926/* PerlIO::cede */
1927
1928typedef struct
1929{
1930 PerlIOBuf base;
1931 NV next, every;
1932} PerlIOCede;
1933
1934static IV
1935PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1936{
1937 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1938
1939 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1940 self->next = nvtime () + self->every;
1941
1942 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1943}
1944
1945static SV *
1946PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1947{
1948 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1949
1950 return newSVnv (self->every);
1951}
1952
1953static IV
1954PerlIOCede_flush (pTHX_ PerlIO *f)
1955{
1956 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1957 double now = nvtime ();
1958
1959 if (now >= self->next)
1960 {
1961 api_cede (aTHX);
1962 self->next = now + self->every;
1963 }
1964
1965 return PerlIOBuf_flush (aTHX_ f);
1966}
1967
1968static PerlIO_funcs PerlIO_cede =
1969{
1970 sizeof(PerlIO_funcs),
1971 "cede",
1972 sizeof(PerlIOCede),
1973 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1974 PerlIOCede_pushed,
1975 PerlIOBuf_popped,
1976 PerlIOBuf_open,
1977 PerlIOBase_binmode,
1978 PerlIOCede_getarg,
1979 PerlIOBase_fileno,
1980 PerlIOBuf_dup,
1981 PerlIOBuf_read,
1982 PerlIOBuf_unread,
1983 PerlIOBuf_write,
1984 PerlIOBuf_seek,
1985 PerlIOBuf_tell,
1986 PerlIOBuf_close,
1987 PerlIOCede_flush,
1988 PerlIOBuf_fill,
1989 PerlIOBase_eof,
1990 PerlIOBase_error,
1991 PerlIOBase_clearerr,
1992 PerlIOBase_setlinebuf,
1993 PerlIOBuf_get_base,
1994 PerlIOBuf_bufsiz,
1995 PerlIOBuf_get_ptr,
1996 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt,
1998};
1999
2000/*****************************************************************************/
2001/* Coro::Semaphore */
2002
2003static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{
2006 SV *count_sv = AvARRAY (av)[0];
2007 IV count = SvIVX (count_sv);
2008
2009 count += adjust;
2010 SvIVX (count_sv) = count;
2011
2012 /* now wake up as many waiters as are expected to lock */
2013 while (count > 0 && AvFILLp (av) > 0)
2014 {
2015 SV *cb;
2016
2017 /* swap first two elements so we can shift a waiter */
2018 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av);
2021
2022 if (SvOBJECT (cb))
2023 api_ready (aTHX_ cb);
2024 else
2025 croak ("callbacks not yet supported");
2026
2027 SvREFCNT_dec (cb);
2028
2029 --count;
2030 }
2031}
2032
2033static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2035{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2038}
2039
2040static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2042{
2043 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0];
2045
2046 if (SvIVX (count_sv) > 0)
2047 {
2048 SvSTATE_current->on_destroy = 0;
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2050 return 0;
2051 }
2052 else
2053 {
2054 int i;
2055 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */
2058
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current))
2061 return 1;
2062
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2064 return 1;
2065 }
2066}
2067
2068static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{
2071 AV *av = (AV *)SvRV (arg [0]);
2072
2073 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 {
2075 frame->data = (void *)av;
2076 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079 else
2080 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 }
2091
2092 frame->check = slf_check_semaphore_down;
2093
2094}
2095
2096/*****************************************************************************/
2097/* gensub: simple closure generation utility */
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)newSV (0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
2120/* Coro::AIO */
2121
2122#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2123
2124/* helper storage struct */
2125struct io_state
2126{
2127 int errorno;
2128 I32 laststype; /* U16 in 5.10.0 */
2129 int laststatval;
2130 Stat_t statcache;
2131};
2132
2133static void
2134coro_aio_callback (pTHX_ CV *cv)
2135{
2136 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG;
2138 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state));
2140
2141 av_extend (state, items);
2142
2143 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv);
2146
2147 {
2148 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2149
2150 data->errorno = errno;
2151 data->laststype = PL_laststype;
2152 data->laststatval = PL_laststatval;
2153 data->statcache = PL_statcache;
2154 }
2155
2156 /* now build the result vector out of all the parameters and the data_sv */
2157 {
2158 int i;
2159
2160 for (i = 0; i < items; ++i)
2161 av_push (state, SvREFCNT_inc_NN (ST (i)));
2162 }
2163
2164 av_push (state, data_sv);
2165
2166 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro);
2168 SvREFCNT_dec ((AV *)state);
2169}
2170
2171static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{
2174 AV *state = (AV *)frame->data;
2175
2176 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1;
2179
2180 /* restore status */
2181 {
2182 SV *data_sv = av_pop (state);
2183 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2184
2185 errno = data->errorno;
2186 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache;
2189
2190 SvREFCNT_dec (data_sv);
2191 }
2192
2193 /* push result values */
2194 {
2195 dSP;
2196 int i;
2197
2198 EXTEND (SP, AvFILLp (state) + 1);
2199 for (i = 0; i <= AvFILLp (state); ++i)
2200 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2201
2202 PUTBACK;
2203 }
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2212 SV *coro_hv = SvRV (coro_current);
2213 struct coro *coro = SvSTATE_hv (coro_hv);
2214
2215 /* put our coroutine id on the state arg */
2216 av_push (state, SvREFCNT_inc_NN (coro_hv));
2217
2218 /* first see whether we have a non-zero priority and set it as AIO prio */
2219 if (coro->prio)
2220 {
2221 dSP;
2222
2223 static SV *prio_cv;
2224 static SV *prio_sv;
2225
2226 if (expect_false (!prio_cv))
2227 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0);
2230 }
2231
2232 PUSHMARK (SP);
2233 sv_setiv (prio_sv, coro->prio);
2234 XPUSHs (prio_sv);
2235
2236 PUTBACK;
2237 call_sv (prio_cv, G_VOID | G_DISCARD);
2238 }
2239
2240 /* now call the original request */
2241 {
2242 dSP;
2243 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2244 int i;
2245
2246 PUSHMARK (SP);
2247
2248 /* first push all args to the stack */
2249 EXTEND (SP, items + 1);
2250
2251 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]);
2253
2254 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256
2257 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 }
2261
2262 /* now that the requets is going, we loop toll we have a result */
2263 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req;
2266}
2267
2268static void
2269coro_aio_req_xs (pTHX_ CV *cv)
2270{
2271 dXSARGS;
2272
2273 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2274
2275 XSRETURN_EMPTY;
2276}
2277
2278/*****************************************************************************/
2279
1456MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1457 2281
1458PROTOTYPES: DISABLE 2282PROTOTYPES: DISABLE
1459 2283
1460BOOT: 2284BOOT:
1461{ 2285{
1462#ifdef USE_ITHREADS 2286#ifdef USE_ITHREADS
1463 MUTEX_INIT (&coro_mutex); 2287# if CORO_PTHREAD
2288 coro_thx = PERL_GET_CONTEXT;
2289# endif
1464#endif 2290#endif
1465 BOOT_PAGESIZE; 2291 BOOT_PAGESIZE;
1466 2292
1467 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1468 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2298 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2299
2300 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2301 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2302 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1469 2303
1470 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2304 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1471 2305
1472 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2306 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1473 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2307 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1478 main_top_env = PL_top_env; 2312 main_top_env = PL_top_env;
1479 2313
1480 while (main_top_env->je_prev) 2314 while (main_top_env->je_prev)
1481 main_top_env = main_top_env->je_prev; 2315 main_top_env = main_top_env->je_prev;
1482 2316
2317 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf,
2322 newSVpv ("coro_slf", 0), 0);
2323
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf,
2326 newSVpv ("coro schedule like function", 0), 0);
2327 }
2328
1483 coroapi.ver = CORO_API_VERSION; 2329 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION;
2331
1484 coroapi.transfer = api_transfer; 2332 coroapi.transfer = api_transfer;
2333
2334 coroapi.sv_state = SvSTATE_;
2335 coroapi.execute_slf = api_execute_slf;
2336 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself;
2340
2341 {
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
1485 2349
1486 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1487} 2351}
1488 2352
1489SV * 2353SV *
1490new (char *klass, ...) 2354new (char *klass, ...)
1491 CODE: 2355 CODE:
1492{ 2356{
1493 struct coro *coro; 2357 struct coro *coro;
2358 MAGIC *mg;
1494 HV *hv; 2359 HV *hv;
1495 int i; 2360 int i;
1496 2361
1497 Newz (0, coro, 1, struct coro); 2362 Newz (0, coro, 1, struct coro);
1498 coro->args = newAV (); 2363 coro->args = newAV ();
… …
1501 if (coro_first) coro_first->prev = coro; 2366 if (coro_first) coro_first->prev = coro;
1502 coro->next = coro_first; 2367 coro->next = coro_first;
1503 coro_first = coro; 2368 coro_first = coro;
1504 2369
1505 coro->hv = hv = newHV (); 2370 coro->hv = hv = newHV ();
1506 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
1507 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1508 2374
1509 av_extend (coro->args, items - 1); 2375 av_extend (coro->args, items - 1);
1510 for (i = 1; i < items; i++) 2376 for (i = 1; i < items; i++)
1511 av_push (coro->args, newSVsv (ST (i))); 2377 av_push (coro->args, newSVsv (ST (i)));
1512} 2378}
1513 OUTPUT: 2379 OUTPUT:
1514 RETVAL 2380 RETVAL
1515 2381
1516# these not obviously related functions are all rolled into the same xs
1517# function to increase chances that they all will call transfer with the same
1518# stack offset
1519void 2382void
1520_set_stacklevel (...) 2383_set_stacklevel (...)
1521 ALIAS: 2384 CODE:
1522 Coro::State::transfer = 1 2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1523 Coro::schedule = 2
1524 Coro::cede = 3
1525 Coro::cede_notself = 4
1526 CODE:
1527{
1528 struct transfer_args ta;
1529 2386
1530 switch (ix) 2387void
1531 { 2388transfer (...)
1532 case 0: 2389 PROTOTYPE: $$
1533 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2390 CODE:
1534 ta.next = 0; 2391 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1535 break;
1536
1537 case 1:
1538 if (items != 2)
1539 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1540
1541 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1542 break;
1543
1544 case 2:
1545 prepare_schedule (aTHX_ &ta);
1546 break;
1547
1548 case 3:
1549 prepare_cede (aTHX_ &ta);
1550 break;
1551
1552 case 4:
1553 if (!prepare_cede_notself (aTHX_ &ta))
1554 XSRETURN_EMPTY;
1555
1556 break;
1557 }
1558
1559 BARRIER;
1560 TRANSFER (ta);
1561
1562 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1563 XSRETURN_YES;
1564}
1565 2392
1566bool 2393bool
1567_destroy (SV *coro_sv) 2394_destroy (SV *coro_sv)
1568 CODE: 2395 CODE:
1569 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1570 OUTPUT: 2397 OUTPUT:
1571 RETVAL 2398 RETVAL
1572 2399
1573void 2400void
1574_exit (code) 2401_exit (int code)
1575 int code
1576 PROTOTYPE: $ 2402 PROTOTYPE: $
1577 CODE: 2403 CODE:
1578 _exit (code); 2404 _exit (code);
1579 2405
1580int 2406int
1581cctx_stacksize (int new_stacksize = 0) 2407cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$
1582 CODE: 2409 CODE:
1583 RETVAL = coro_stacksize; 2410 RETVAL = cctx_stacksize;
1584 if (new_stacksize) 2411 if (new_stacksize)
2412 {
1585 coro_stacksize = new_stacksize; 2413 cctx_stacksize = new_stacksize;
2414 ++cctx_gen;
2415 }
1586 OUTPUT: 2416 OUTPUT:
1587 RETVAL 2417 RETVAL
1588 2418
1589int 2419int
2420cctx_max_idle (int max_idle = 0)
2421 PROTOTYPE: ;$
2422 CODE:
2423 RETVAL = cctx_max_idle;
2424 if (max_idle > 1)
2425 cctx_max_idle = max_idle;
2426 OUTPUT:
2427 RETVAL
2428
2429int
1590cctx_count () 2430cctx_count ()
2431 PROTOTYPE:
1591 CODE: 2432 CODE:
1592 RETVAL = cctx_count; 2433 RETVAL = cctx_count;
1593 OUTPUT: 2434 OUTPUT:
1594 RETVAL 2435 RETVAL
1595 2436
1596int 2437int
1597cctx_idle () 2438cctx_idle ()
2439 PROTOTYPE:
1598 CODE: 2440 CODE:
1599 RETVAL = cctx_idle; 2441 RETVAL = cctx_idle;
1600 OUTPUT: 2442 OUTPUT:
1601 RETVAL 2443 RETVAL
1602 2444
1603void 2445void
1604list () 2446list ()
2447 PROTOTYPE:
1605 PPCODE: 2448 PPCODE:
1606{ 2449{
1607 struct coro *coro; 2450 struct coro *coro;
1608 for (coro = coro_first; coro; coro = coro->next) 2451 for (coro = coro_first; coro; coro = coro->next)
1609 if (coro->hv) 2452 if (coro->hv)
… …
1614call (Coro::State coro, SV *coderef) 2457call (Coro::State coro, SV *coderef)
1615 ALIAS: 2458 ALIAS:
1616 eval = 1 2459 eval = 1
1617 CODE: 2460 CODE:
1618{ 2461{
1619 if (coro->mainstack) 2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1620 { 2463 {
1621 struct coro temp; 2464 struct coro temp;
1622 2465
1623 if (!(coro->flags & CF_RUNNING)) 2466 if (!(coro->flags & CF_RUNNING))
1624 { 2467 {
2468 PUTBACK;
1625 save_perl (aTHX_ &temp); 2469 save_perl (aTHX_ &temp);
1626 load_perl (aTHX_ coro); 2470 load_perl (aTHX_ coro);
1627 } 2471 }
1628 2472
1629 { 2473 {
1630 dSP; 2474 dSP;
1631 ENTER; 2475 ENTER;
1632 SAVETMPS; 2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK;
1633 PUSHMARK (SP); 2479 PUSHMARK (SP);
1634 PUTBACK;
1635 2480
1636 if (ix) 2481 if (ix)
1637 eval_sv (coderef, 0); 2482 eval_sv (coderef, 0);
1638 else 2483 else
1639 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1640 2485
2486 POPSTACK;
1641 SPAGAIN; 2487 SPAGAIN;
1642 FREETMPS; 2488 FREETMPS;
1643 LEAVE; 2489 LEAVE;
1644 PUTBACK; 2490 PUTBACK;
1645 } 2491 }
1646 2492
1647 if (!(coro->flags & CF_RUNNING)) 2493 if (!(coro->flags & CF_RUNNING))
1648 { 2494 {
1649 save_perl (aTHX_ coro); 2495 save_perl (aTHX_ coro);
1650 load_perl (aTHX_ &temp); 2496 load_perl (aTHX_ &temp);
2497 SPAGAIN;
1651 } 2498 }
1652 } 2499 }
1653} 2500}
1654 2501
1655SV * 2502SV *
… …
1664 RETVAL = boolSV (coro->flags & ix); 2511 RETVAL = boolSV (coro->flags & ix);
1665 OUTPUT: 2512 OUTPUT:
1666 RETVAL 2513 RETVAL
1667 2514
1668void 2515void
2516throw (Coro::State self, SV *throw = &PL_sv_undef)
2517 PROTOTYPE: $;$
2518 CODE:
2519{
2520 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw;
2522 SvREFCNT_dec (*throwp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2524}
2525
2526void
1669api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$
2529 C_ARGS: aTHX_ coro, flags
1670 2530
1671SV * 2531SV *
1672has_stack (Coro::State coro) 2532has_cctx (Coro::State coro)
1673 PROTOTYPE: $ 2533 PROTOTYPE: $
1674 CODE: 2534 CODE:
1675 RETVAL = boolSV (!!coro->cctx); 2535 RETVAL = boolSV (!!coro->cctx);
1676 OUTPUT: 2536 OUTPUT:
1677 RETVAL 2537 RETVAL
… …
1682 CODE: 2542 CODE:
1683 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2543 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1684 OUTPUT: 2544 OUTPUT:
1685 RETVAL 2545 RETVAL
1686 2546
1687IV 2547UV
1688rss (Coro::State coro) 2548rss (Coro::State coro)
1689 PROTOTYPE: $ 2549 PROTOTYPE: $
1690 ALIAS: 2550 ALIAS:
1691 usecount = 1 2551 usecount = 1
1692 CODE: 2552 CODE:
… …
1696 case 1: RETVAL = coro->usecount; break; 2556 case 1: RETVAL = coro->usecount; break;
1697 } 2557 }
1698 OUTPUT: 2558 OUTPUT:
1699 RETVAL 2559 RETVAL
1700 2560
2561void
2562force_cctx ()
2563 PROTOTYPE:
2564 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0;
2566
2567void
2568swap_defsv (Coro::State self)
2569 PROTOTYPE: $
2570 ALIAS:
2571 swap_defav = 1
2572 CODE:
2573 if (!self->slot)
2574 croak ("cannot swap state with coroutine that has no saved state,");
2575 else
2576 {
2577 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579
2580 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 }
2582
1701 2583
1702MODULE = Coro::State PACKAGE = Coro 2584MODULE = Coro::State PACKAGE = Coro
1703 2585
1704BOOT: 2586BOOT:
1705{ 2587{
1706 int i; 2588 int i;
1707 2589
1708 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1709 get_sv ("Coro::POOL_RSS" , TRUE); /* silence stupid 5.10 warning */
1710 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1711 get_sv ("Coro::POOL_SIZE" , TRUE); /* silence stupid 5.10 warning */
1712 av_async_pool = get_av ("Coro::async_pool", TRUE); 2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1713 get_av ("Coro::async_pool", TRUE); /* silence stupid 5.10 warning */ 2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1714 2593
1715 coro_current = get_sv ("Coro::current", FALSE); 2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1716 SvREADONLY_on (coro_current); 2595 SvREADONLY_on (coro_current);
1717 2596
1718 coro_stash = gv_stashpv ("Coro", TRUE); 2597 coro_stash = gv_stashpv ("Coro", TRUE);
1719 2598
1720 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1726 2605
1727 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1728 coro_ready[i] = newAV (); 2607 coro_ready[i] = newAV ();
1729 2608
1730 { 2609 {
1731 SV *sv = perl_get_sv ("Coro::API", TRUE); 2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1732 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1733 2611
1734 coroapi.schedule = api_schedule; 2612 coroapi.schedule = api_schedule;
1735 coroapi.cede = api_cede; 2613 coroapi.cede = api_cede;
1736 coroapi.cede_notself = api_cede_notself; 2614 coroapi.cede_notself = api_cede_notself;
1737 coroapi.ready = api_ready; 2615 coroapi.ready = api_ready;
1738 coroapi.is_ready = api_is_ready; 2616 coroapi.is_ready = api_is_ready;
1739 coroapi.nready = &coro_nready; 2617 coroapi.nready = coro_nready;
1740 coroapi.current = coro_current; 2618 coroapi.current = coro_current;
1741 2619
1742 GCoroAPI = &coroapi; 2620 GCoroAPI = &coroapi;
1743 sv_setiv (sv, (IV)&coroapi); 2621 sv_setiv (sv, (IV)&coroapi);
1744 SvREADONLY_on (sv); 2622 SvREADONLY_on (sv);
1745 } 2623 }
1746} 2624}
2625
2626void
2627schedule (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630
2631void
2632cede (...)
2633 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635
2636void
2637cede_notself (...)
2638 CODE:
2639 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1747 2640
1748void 2641void
1749_set_current (SV *current) 2642_set_current (SV *current)
1750 PROTOTYPE: $ 2643 PROTOTYPE: $
1751 CODE: 2644 CODE:
1752 SvREFCNT_dec (SvRV (coro_current)); 2645 SvREFCNT_dec (SvRV (coro_current));
1753 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2646 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2647
2648void
2649_set_readyhook (SV *hook)
2650 PROTOTYPE: $
2651 CODE:
2652 SvREFCNT_dec (coro_readyhook);
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1754 2654
1755int 2655int
1756prio (Coro::State coro, int newprio = 0) 2656prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$
1757 ALIAS: 2658 ALIAS:
1758 nice = 1 2659 nice = 1
1759 CODE: 2660 CODE:
1760{ 2661{
1761 RETVAL = coro->prio; 2662 RETVAL = coro->prio;
… …
1776 2677
1777SV * 2678SV *
1778ready (SV *self) 2679ready (SV *self)
1779 PROTOTYPE: $ 2680 PROTOTYPE: $
1780 CODE: 2681 CODE:
1781 RETVAL = boolSV (api_ready (self)); 2682 RETVAL = boolSV (api_ready (aTHX_ self));
1782 OUTPUT: 2683 OUTPUT:
1783 RETVAL 2684 RETVAL
1784 2685
1785int 2686int
1786nready (...) 2687nready (...)
… …
1788 CODE: 2689 CODE:
1789 RETVAL = coro_nready; 2690 RETVAL = coro_nready;
1790 OUTPUT: 2691 OUTPUT:
1791 RETVAL 2692 RETVAL
1792 2693
1793void
1794throw (Coro::State self, SV *throw = &PL_sv_undef)
1795 PROTOTYPE: $;$
1796 CODE:
1797 SvREFCNT_dec (self->throw);
1798 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1799
1800# for async_pool speedup 2694# for async_pool speedup
1801void 2695void
1802_pool_1 (SV *cb) 2696_pool_1 (SV *cb)
1803 CODE: 2697 CODE:
1804{ 2698{
1805 struct coro *coro = SvSTATE (coro_current);
1806 HV *hv = (HV *)SvRV (coro_current); 2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
1807 AV *defav = GvAV (PL_defgv); 2701 AV *defav = GvAV (PL_defgv);
1808 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1809 AV *invoke_av; 2703 AV *invoke_av;
1810 int i, len; 2704 int i, len;
1811 2705
1812 if (!invoke) 2706 if (!invoke)
2707 {
2708 SV *old = PL_diehook;
2709 PL_diehook = 0;
2710 SvREFCNT_dec (old);
1813 croak ("\3async_pool terminate\2\n"); 2711 croak ("\3async_pool terminate\2\n");
2712 }
1814 2713
1815 SvREFCNT_dec (coro->saved_deffh); 2714 SvREFCNT_dec (coro->saved_deffh);
1816 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1817 2716
1818 hv_store (hv, "desc", sizeof ("desc") - 1, 2717 hv_store (hv, "desc", sizeof ("desc") - 1,
1819 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1820 2719
1821 invoke_av = (AV *)SvRV (invoke); 2720 invoke_av = (AV *)SvRV (invoke);
… …
1825 2724
1826 if (len > 0) 2725 if (len > 0)
1827 { 2726 {
1828 av_fill (defav, len - 1); 2727 av_fill (defav, len - 1);
1829 for (i = 0; i < len; ++i) 2728 for (i = 0; i < len; ++i)
1830 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1831 } 2730 }
1832
1833 SvREFCNT_dec (invoke);
1834} 2731}
1835 2732
1836void 2733void
1837_pool_2 (SV *cb) 2734_pool_2 (SV *cb)
1838 CODE: 2735 CODE:
1839{ 2736{
1840 struct coro *coro = SvSTATE (coro_current); 2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv);
1841 2739
1842 sv_setsv (cb, &PL_sv_undef); 2740 sv_setsv (cb, &PL_sv_undef);
1843 2741
1844 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1845 coro->saved_deffh = 0; 2743 coro->saved_deffh = 0;
1846 2744
1847 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1848 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
1849 croak ("\3async_pool terminate\2\n"); 2751 croak ("\3async_pool terminate\2\n");
2752 }
1850 2753
1851 av_clear (GvAV (PL_defgv)); 2754 av_clear (GvAV (PL_defgv));
1852 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2755 hv_store (hv, "desc", sizeof ("desc") - 1,
1853 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1854 2757
1855 coro->prio = 0; 2758 coro->prio = 0;
1856 2759
1857 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1858 api_trace (coro_current, 0); 2761 api_trace (aTHX_ coro_current, 0);
1859 2762
1860 av_push (av_async_pool, newSVsv (coro_current)); 2763 av_push (av_async_pool, newSVsv (coro_current));
1861} 2764}
1862 2765
1863 2766
2767MODULE = Coro::State PACKAGE = PerlIO::cede
2768
2769BOOT:
2770 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2771
2772
1864MODULE = Coro::State PACKAGE = Coro::AIO 2773MODULE = Coro::State PACKAGE = Coro::Semaphore
1865 2774
1866SV * 2775SV *
1867_get_state () 2776new (SV *klass, SV *count_ = 0)
1868 CODE: 2777 CODE:
1869{ 2778{
1870 struct io_state *data; 2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
1871 2780 AV *av = newAV ();
1872 RETVAL = newSV (sizeof (struct io_state)); 2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
1873 data = (struct io_state *)SvPVX (RETVAL); 2782 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
1874 SvCUR_set (RETVAL, sizeof (struct io_state));
1875 SvPOK_only (RETVAL);
1876
1877 data->errorno = errno;
1878 data->laststype = PL_laststype;
1879 data->laststatval = PL_laststatval;
1880 data->statcache = PL_statcache;
1881} 2783}
1882 OUTPUT: 2784 OUTPUT:
1883 RETVAL 2785 RETVAL
1884 2786
2787SV *
2788count (SV *self)
2789 CODE:
2790 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2791 OUTPUT:
2792 RETVAL
2793
1885void 2794void
1886_set_state (char *data_) 2795up (SV *self, int adjust = 1)
1887 PROTOTYPE: $ 2796 ALIAS:
2797 adjust = 1
2798 CODE:
2799 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2800
2801void
2802down (SV *self)
2803 CODE:
2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2805
2806void
2807try (SV *self)
2808 PPCODE:
2809{
2810 AV *av = (AV *)SvRV (self);
2811 SV *count_sv = AvARRAY (av)[0];
2812 IV count = SvIVX (count_sv);
2813
2814 if (count > 0)
2815 {
2816 --count;
2817 SvIVX (count_sv) = count;
2818 XSRETURN_YES;
2819 }
2820 else
2821 XSRETURN_NO;
2822}
2823
2824void
2825waiters (SV *self)
2826 CODE:
2827{
2828 AV *av = (AV *)SvRV (self);
2829
2830 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2832 else
2833 {
2834 int i;
2835 EXTEND (SP, AvFILLp (av) + 1 - 1);
2836 for (i = 1; i <= AvFILLp (av); ++i)
2837 PUSHs (newSVsv (AvARRAY (av)[i]));
2838 }
2839}
2840
2841
2842MODULE = Coro::State PACKAGE = Coro::AnyEvent
2843
2844BOOT:
2845 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2846
2847void
2848_schedule (...)
1888 CODE: 2849 CODE:
1889{ 2850{
1890 struct io_state *data = (void *)data_; 2851 static int incede;
1891 2852
1892 errno = data->errorno; 2853 api_cede_notself (aTHX);
1893 PL_laststype = data->laststype;
1894 PL_laststatval = data->laststatval;
1895 PL_statcache = data->statcache;
1896}
1897 2854
2855 ++incede;
2856 while (coro_nready >= incede && api_cede (aTHX))
2857 ;
2858
2859 sv_setsv (sv_activity, &PL_sv_undef);
2860 if (coro_nready >= incede)
2861 {
2862 PUSHMARK (SP);
2863 PUTBACK;
2864 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2865 SPAGAIN;
2866 }
2867
2868 --incede;
2869}
2870
2871
2872MODULE = Coro::State PACKAGE = Coro::AIO
2873
2874void
2875_register (char *target, char *proto, SV *req)
2876 CODE:
2877{
2878 HV *st;
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885}
2886

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