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Comparing Coro/Coro/State.xs (file contents):
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC vs.
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 120 * portable way as possible. */
95#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
96#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
97 126
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 128
100#if __GNUC__ >= 3 129#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
103#else 133#else
104# define attribute(x) 134# define attribute(x)
105# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
106#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
107 141
108#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
109 143
110#include "CoroAPI.h" 144#include "CoroAPI.h"
111 145
112#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 147# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 150#endif
120 151
121/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
122struct io_state 153struct io_state
123{ 154{
155 AV *res;
124 int errorno; 156 int errorno;
125 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
126 int laststatval; 158 int laststatval;
127 Stat_t statcache; 159 Stat_t statcache;
128}; 160};
129 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 168static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171
172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
136 177
137/* async_pool helper stuff */ 178/* async_pool helper stuff */
138static SV *sv_pool_rss; 179static SV *sv_pool_rss;
139static SV *sv_pool_size; 180static SV *sv_pool_size;
140static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
141 185
142static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
144 188
145enum { 189enum {
… …
150 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
151 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
152}; 196};
153 197
154/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
155typedef struct coro_cctx { 199typedef struct coro_cctx
200{
156 struct coro_cctx *next; 201 struct coro_cctx *next;
157 202
158 /* the stack */ 203 /* the stack */
159 void *sptr; 204 void *sptr;
160 size_t ssize; 205 size_t ssize;
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 210 JMPENV *top_env;
166 coro_context cctx; 211 coro_context cctx;
167 212
213 U32 gen;
168#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
169 int valgrind_id; 215 int valgrind_id;
170#endif 216#endif
171 unsigned char flags; 217 unsigned char flags;
172} coro_cctx; 218} coro_cctx;
… …
176 CF_READY = 0x0002, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179}; 225};
180 226
181/* this is a structure representing a perl-level coroutine */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
182struct coro { 228typedef struct
183 /* the c coroutine allocated to this perl coroutine, if any */ 229{
184 coro_cctx *cctx; 230 SV *defsv;
185 231 AV *defav;
186 /* data associated with this coroutine (initial args) */ 232 SV *errsv;
187 AV *args; 233 SV *irsgv;
188 int refcnt;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */
191
192 /* optionally saved, might be zero */
193 AV *defav; /* @_ */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name; 234#define VAR(name,type) type name;
201# include "state.h" 235# include "state.h"
202#undef VAR 236#undef VAR
237} perl_slots;
238
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240
241/* this is a structure representing a perl-level coroutine */
242struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx;
245
246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */
250
251 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
203 256
204 /* statistics */ 257 /* statistics */
205 int usecount; /* number of switches to this coro */ 258 int usecount; /* number of transfers to this coro */
206 259
207 /* coro process data */ 260 /* coro process data */
208 int prio; 261 int prio;
262 SV *throw; /* exception to be thrown */
263
264 /* async_pool */
265 SV *saved_deffh;
209 266
210 /* linked list */ 267 /* linked list */
211 struct coro *next, *prev; 268 struct coro *next, *prev;
212 HV *hv; /* the perl hash associated with this coro, if any */
213}; 269};
214 270
215typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
216typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
217 279
218/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
219 281
220#define PRIO_MAX 3 282#define PRIO_MAX 3
221#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
224#define PRIO_IDLE -3 286#define PRIO_IDLE -3
225#define PRIO_MIN -4 287#define PRIO_MIN -4
226 288
227/* for Coro.pm */ 289/* for Coro.pm */
228static SV *coro_current; 290static SV *coro_current;
291static SV *coro_readyhook;
229static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
230static int coro_nready;
231static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
232 295
233/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
297
298static SV *
299coro_get_sv (pTHX_ const char *name, int create)
300{
301#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_sv (name, create);
304#endif
305 return get_sv (name, create);
306}
307
308static AV *
309coro_get_av (pTHX_ const char *name, int create)
310{
311#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_av (name, create);
314#endif
315 return get_av (name, create);
316}
317
318static HV *
319coro_get_hv (pTHX_ const char *name, int create)
320{
321#if PERL_VERSION_ATLEAST (5,10,0)
322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
323 get_hv (name, create);
324#endif
325 return get_hv (name, create);
326}
234 327
235static AV * 328static AV *
236coro_clone_padlist (pTHX_ CV *cv) 329coro_clone_padlist (pTHX_ CV *cv)
237{ 330{
238 AV *padlist = CvPADLIST (cv); 331 AV *padlist = CvPADLIST (cv);
239 AV *newpadlist, *newpad; 332 AV *newpadlist, *newpad;
240 333
241 newpadlist = newAV (); 334 newpadlist = newAV ();
242 AvREAL_off (newpadlist); 335 AvREAL_off (newpadlist);
243#if PERL_VERSION_ATLEAST (5,9,0) 336#if PERL_VERSION_ATLEAST (5,10,0)
244 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245#else 338#else
246 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247#endif 340#endif
248 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
249 --AvFILLp (padlist); 342 --AvFILLp (padlist);
250 343
251 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
252 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
253 346
254 return newpadlist; 347 return newpadlist;
255} 348}
256 349
… …
286 379
287 /* casting is fun. */ 380 /* casting is fun. */
288 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
289 free_padlist (aTHX_ padlist); 382 free_padlist (aTHX_ padlist);
290 383
291 SvREFCNT_dec (av); 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
292 385
293 return 0; 386 return 0;
294} 387}
295 388
296#define PERL_MAGIC_coro PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
297 391
298static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 392static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0,
394 coro_cv_free
395};
299 396
300#define CORO_MAGIC(cv) \ 397#define CORO_MAGIC(sv, type) \
301 SvMAGIC (cv) \ 398 expect_true (SvMAGIC (sv)) \
302 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
303 ? SvMAGIC (cv) \ 400 ? SvMAGIC (sv) \
304 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 401 : mg_find (sv, type) \
305 : 0 402 : 0
306 403
307static struct coro * 404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
308SvSTATE_ (pTHX_ SV *coro) 408SvSTATE_ (pTHX_ SV *coro)
309{ 409{
310 HV *stash; 410 HV *stash;
311 MAGIC *mg; 411 MAGIC *mg;
312 412
313 if (SvROK (coro)) 413 if (SvROK (coro))
314 coro = SvRV (coro); 414 coro = SvRV (coro);
315 415
316 if (SvTYPE (coro) != SVt_PVHV) 416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
317 croak ("Coro::State object required"); 417 croak ("Coro::State object required");
318 418
319 stash = SvSTASH (coro); 419 stash = SvSTASH (coro);
320 if (stash != coro_stash && stash != coro_state_stash) 420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
321 { 421 {
322 /* very slow, but rare, check */ 422 /* very slow, but rare, check */
323 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324 croak ("Coro::State object required"); 424 croak ("Coro::State object required");
325 } 425 }
326 426
327 mg = CORO_MAGIC (coro); 427 mg = CORO_MAGIC_state (coro);
328 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
329} 429}
330 430
331#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332 432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445
333/* the next two functions merely cache the padlists */ 446/* the next two functions merely cache the padlists */
334static void 447static void
335get_padlist (pTHX_ CV *cv) 448get_padlist (pTHX_ CV *cv)
336{ 449{
337 MAGIC *mg = CORO_MAGIC (cv); 450 MAGIC *mg = CORO_MAGIC_cv (cv);
338 AV *av; 451 AV *av;
339 452
340 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 453 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 454 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342 else 455 else
343 { 456 {
344#if CORO_PREFER_PERL_FUNCTIONS 457#if CORO_PREFER_PERL_FUNCTIONS
345 /* this is probably cleaner, but also slower? */ 458 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */
346 CV *cp = Perl_cv_clone (cv); 460 CV *cp = Perl_cv_clone (cv);
347 CvPADLIST (cv) = CvPADLIST (cp); 461 CvPADLIST (cv) = CvPADLIST (cp);
348 CvPADLIST (cp) = 0; 462 CvPADLIST (cp) = 0;
349 SvREFCNT_dec (cp); 463 SvREFCNT_dec (cp);
350#else 464#else
… …
354} 468}
355 469
356static void 470static void
357put_padlist (pTHX_ CV *cv) 471put_padlist (pTHX_ CV *cv)
358{ 472{
359 MAGIC *mg = CORO_MAGIC (cv); 473 MAGIC *mg = CORO_MAGIC_cv (cv);
360 AV *av; 474 AV *av;
361 475
362 if (!mg) 476 if (expect_false (!mg))
363 { 477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366 mg->mg_virtual = &vtbl_coro;
367 mg->mg_obj = (SV *)newAV ();
368 }
369 478
370 av = (AV *)mg->mg_obj; 479 av = (AV *)mg->mg_obj;
371 480
372 if (AvFILLp (av) >= AvMAX (av)) 481 if (expect_false (AvFILLp (av) >= AvMAX (av)))
373 av_extend (av, AvMAX (av) + 1); 482 av_extend (av, AvMAX (av) + 1);
374 483
375 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376} 485}
377 486
378/** load & save, init *******************************************************/ 487/** load & save, init *******************************************************/
379 488
380#define SB do {
381#define SE } while (0)
382
383#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384
385static void 489static void
386load_perl (pTHX_ Coro__State c) 490load_perl (pTHX_ Coro__State c)
387{ 491{
492 perl_slots *slot = c->slot;
493 c->slot = 0;
494
495 PL_mainstack = c->mainstack;
496
497 GvSV (PL_defgv) = slot->defsv;
498 GvAV (PL_defgv) = slot->defav;
499 GvSV (PL_errgv) = slot->errsv;
500 GvSV (irsgv) = slot->irsgv;
501
388#define VAR(name,type) PL_ ## name = c->name; 502 #define VAR(name,type) PL_ ## name = slot->name;
389# include "state.h" 503 # include "state.h"
390#undef VAR 504 #undef VAR
391
392 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397 if (c->irssv)
398 {
399 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
400 {
401 SvREFCNT_dec (c->irssv);
402 c->irssv = 0;
403 }
404 else
405 {
406 REPLACE_SV (PL_rs, c->irssv);
407 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408 sv_setsv (c->irssv_sv, PL_rs);
409 }
410 }
411 505
412 { 506 {
413 dSP; 507 dSP;
508
414 CV *cv; 509 CV *cv;
415 510
416 /* now do the ugly restore mess */ 511 /* now do the ugly restore mess */
417 while ((cv = (CV *)POPs)) 512 while (expect_true (cv = (CV *)POPs))
418 { 513 {
419 put_padlist (aTHX_ cv); /* mark this padlist as available */ 514 put_padlist (aTHX_ cv); /* mark this padlist as available */
420 CvDEPTH (cv) = PTR2IV (POPs); 515 CvDEPTH (cv) = PTR2IV (POPs);
421 CvPADLIST (cv) = (AV *)POPs; 516 CvPADLIST (cv) = (AV *)POPs;
422 } 517 }
423 518
424 PUTBACK; 519 PUTBACK;
425 } 520 }
521
522 slf_frame = c->slf_frame;
523 coro_throw = c->throw;
426} 524}
427 525
428static void 526static void
429save_perl (pTHX_ Coro__State c) 527save_perl (pTHX_ Coro__State c)
430{ 528{
529 c->throw = coro_throw;
530 c->slf_frame = slf_frame;
531
431 { 532 {
432 dSP; 533 dSP;
433 I32 cxix = cxstack_ix; 534 I32 cxix = cxstack_ix;
434 PERL_CONTEXT *ccstk = cxstack; 535 PERL_CONTEXT *ccstk = cxstack;
435 PERL_SI *top_si = PL_curstackinfo; 536 PERL_SI *top_si = PL_curstackinfo;
… …
441 542
442 XPUSHs (Nullsv); 543 XPUSHs (Nullsv);
443 /* this loop was inspired by pp_caller */ 544 /* this loop was inspired by pp_caller */
444 for (;;) 545 for (;;)
445 { 546 {
446 while (cxix >= 0) 547 while (expect_true (cxix >= 0))
447 { 548 {
448 PERL_CONTEXT *cx = &ccstk[cxix--]; 549 PERL_CONTEXT *cx = &ccstk[cxix--];
449 550
450 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 551 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451 { 552 {
452 CV *cv = cx->blk_sub.cv; 553 CV *cv = cx->blk_sub.cv;
453 554
454 if (CvDEPTH (cv)) 555 if (expect_true (CvDEPTH (cv)))
455 { 556 {
456 EXTEND (SP, 3); 557 EXTEND (SP, 3);
457 PUSHs ((SV *)CvPADLIST (cv)); 558 PUSHs ((SV *)CvPADLIST (cv));
458 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 559 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459 PUSHs ((SV *)cv); 560 PUSHs ((SV *)cv);
460 561
461 CvDEPTH (cv) = 0; 562 CvDEPTH (cv) = 0;
462 get_padlist (aTHX_ cv); 563 get_padlist (aTHX_ cv);
463 } 564 }
464 } 565 }
465 } 566 }
466 567
467 if (top_si->si_type == PERLSI_MAIN) 568 if (expect_true (top_si->si_type == PERLSI_MAIN))
468 break; 569 break;
469 570
470 top_si = top_si->si_prev; 571 top_si = top_si->si_prev;
471 ccstk = top_si->si_cxstack; 572 ccstk = top_si->si_cxstack;
472 cxix = top_si->si_cxix; 573 cxix = top_si->si_cxix;
473 } 574 }
474 575
475 PUTBACK; 576 PUTBACK;
476 } 577 }
477 578
478 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 579 /* allocate some space on the context stack for our purposes */
479 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 580 /* we manually unroll here, as usually 2 slots is enough */
480 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 581 if (SLOT_COUNT >= 1) CXINC;
481 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 582 if (SLOT_COUNT >= 2) CXINC;
482 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 583 if (SLOT_COUNT >= 3) CXINC;
584 {
585 int i;
586 for (i = 3; i < SLOT_COUNT; ++i)
587 CXINC;
588 }
589 cxstack_ix -= SLOT_COUNT; /* undo allocation */
483 590
591 c->mainstack = PL_mainstack;
592
593 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595
596 slot->defav = GvAV (PL_defgv);
597 slot->defsv = DEFSV;
598 slot->errsv = ERRSV;
599 slot->irsgv = GvSV (irsgv);
600
484#define VAR(name,type)c->name = PL_ ## name; 601 #define VAR(name,type) slot->name = PL_ ## name;
485# include "state.h" 602 # include "state.h"
486#undef VAR 603 #undef VAR
604 }
487} 605}
488 606
489/* 607/*
490 * allocate various perl stacks. This is an exact copy 608 * allocate various perl stacks. This is almost an exact copy
491 * of perl.c:init_stacks, except that it uses less memory 609 * of perl.c:init_stacks, except that it uses less memory
492 * on the (sometimes correct) assumption that coroutines do 610 * on the (sometimes correct) assumption that coroutines do
493 * not usually need a lot of stackspace. 611 * not usually need a lot of stackspace.
494 */ 612 */
495#if CORO_PREFER_PERL_FUNCTIONS 613#if CORO_PREFER_PERL_FUNCTIONS
496# define coro_init_stacks init_stacks 614# define coro_init_stacks init_stacks
497#else 615#else
498static void 616static void
499coro_init_stacks (pTHX) 617coro_init_stacks (pTHX)
500{ 618{
501 PL_curstackinfo = new_stackinfo(64, 6); 619 PL_curstackinfo = new_stackinfo(32, 8);
502 PL_curstackinfo->si_type = PERLSI_MAIN; 620 PL_curstackinfo->si_type = PERLSI_MAIN;
503 PL_curstack = PL_curstackinfo->si_stack; 621 PL_curstack = PL_curstackinfo->si_stack;
504 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 622 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505 623
506 PL_stack_base = AvARRAY(PL_curstack); 624 PL_stack_base = AvARRAY(PL_curstack);
507 PL_stack_sp = PL_stack_base; 625 PL_stack_sp = PL_stack_base;
508 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 626 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509 627
510 New(50,PL_tmps_stack,64,SV*); 628 New(50,PL_tmps_stack,32,SV*);
511 PL_tmps_floor = -1; 629 PL_tmps_floor = -1;
512 PL_tmps_ix = -1; 630 PL_tmps_ix = -1;
513 PL_tmps_max = 64; 631 PL_tmps_max = 32;
514 632
515 New(54,PL_markstack,16,I32); 633 New(54,PL_markstack,16,I32);
516 PL_markstack_ptr = PL_markstack; 634 PL_markstack_ptr = PL_markstack;
517 PL_markstack_max = PL_markstack + 16; 635 PL_markstack_max = PL_markstack + 16;
518 636
519#ifdef SET_MARK_OFFSET 637#ifdef SET_MARK_OFFSET
520 SET_MARK_OFFSET; 638 SET_MARK_OFFSET;
521#endif 639#endif
522 640
523 New(54,PL_scopestack,16,I32); 641 New(54,PL_scopestack,8,I32);
524 PL_scopestack_ix = 0; 642 PL_scopestack_ix = 0;
525 PL_scopestack_max = 16; 643 PL_scopestack_max = 8;
526 644
527 New(54,PL_savestack,64,ANY); 645 New(54,PL_savestack,24,ANY);
528 PL_savestack_ix = 0; 646 PL_savestack_ix = 0;
529 PL_savestack_max = 64; 647 PL_savestack_max = 24;
530 648
531#if !PERL_VERSION_ATLEAST (5,9,0) 649#if !PERL_VERSION_ATLEAST (5,10,0)
532 New(54,PL_retstack,4,OP*); 650 New(54,PL_retstack,4,OP*);
533 PL_retstack_ix = 0; 651 PL_retstack_ix = 0;
534 PL_retstack_max = 4; 652 PL_retstack_max = 4;
535#endif 653#endif
536} 654}
… …
538 656
539/* 657/*
540 * destroy the stacks, the callchain etc... 658 * destroy the stacks, the callchain etc...
541 */ 659 */
542static void 660static void
543coro_destroy_stacks (pTHX) 661coro_destruct_stacks (pTHX)
544{ 662{
545 if (!IN_DESTRUCT)
546 {
547 /* restore all saved variables and stuff */
548 LEAVE_SCOPE (0);
549 assert (PL_tmps_floor == -1);
550
551 /* free all temporaries */
552 FREETMPS;
553 assert (PL_tmps_ix == -1);
554
555 /* unwind all extra stacks */
556 POPSTACK_TO (PL_mainstack);
557
558 /* unwind main stack */
559 dounwind (-1);
560 }
561
562 while (PL_curstackinfo->si_next) 663 while (PL_curstackinfo->si_next)
563 PL_curstackinfo = PL_curstackinfo->si_next; 664 PL_curstackinfo = PL_curstackinfo->si_next;
564 665
565 while (PL_curstackinfo) 666 while (PL_curstackinfo)
566 { 667 {
… …
576 677
577 Safefree (PL_tmps_stack); 678 Safefree (PL_tmps_stack);
578 Safefree (PL_markstack); 679 Safefree (PL_markstack);
579 Safefree (PL_scopestack); 680 Safefree (PL_scopestack);
580 Safefree (PL_savestack); 681 Safefree (PL_savestack);
581#if !PERL_VERSION_ATLEAST (5,9,0) 682#if !PERL_VERSION_ATLEAST (5,10,0)
582 Safefree (PL_retstack); 683 Safefree (PL_retstack);
583#endif 684#endif
584} 685}
585 686
586static size_t 687static size_t
587coro_rss (pTHX_ struct coro *coro) 688coro_rss (pTHX_ struct coro *coro)
588{ 689{
589 size_t rss = sizeof (coro); 690 size_t rss = sizeof (*coro);
590 691
591 if (coro->mainstack) 692 if (coro->mainstack)
592 { 693 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
593 if (coro->flags & CF_RUNNING) 697 if (coro->flags & CF_RUNNING)
594 { 698 {
699 slot = &tmp_slot;
700
595 #define VAR(name,type)coro->name = PL_ ## name; 701 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 702 # include "state.h"
597 #undef VAR 703 #undef VAR
598 } 704 }
705 else
706 slot = coro->slot;
599 707
708 if (slot)
709 {
600 rss += sizeof (coro->curstackinfo); 710 rss += sizeof (slot->curstackinfo);
601 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
602 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604 rss += coro->tmps_max * sizeof (SV *); 713 rss += slot->tmps_max * sizeof (SV *);
605 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606 rss += coro->scopestack_max * sizeof (I32); 715 rss += slot->scopestack_max * sizeof (I32);
607 rss += coro->savestack_max * sizeof (ANY); 716 rss += slot->savestack_max * sizeof (ANY);
608 717
609#if !PERL_VERSION_ATLEAST (5,9,0) 718#if !PERL_VERSION_ATLEAST (5,10,0)
610 rss += coro->retstack_max * sizeof (OP *); 719 rss += slot->retstack_max * sizeof (OP *);
611#endif 720#endif
721 }
612 } 722 }
613 723
614 return rss; 724 return rss;
615} 725}
616 726
617/** coroutine stack handling ************************************************/ 727/** coroutine stack handling ************************************************/
618 728
729static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
730static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
731static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
732
733/* apparently < 5.8.8 */
734#ifndef MgPV_nolen_const
735#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
736 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
737 (const char*)(mg)->mg_ptr)
738#endif
739
740/*
741 * This overrides the default magic get method of %SIG elements.
742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
743 * and instead of tryign to save and restore the hash elements, we just provide
744 * readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */
619static void 749static int
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{
752 const char *s = MgPV_nolen_const (mg);
753
754 if (*s == '_')
755 {
756 SV **svp = 0;
757
758 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
759 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
760
761 if (svp)
762 {
763 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
764 return 0;
765 }
766 }
767
768 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
769}
770
771static int
772coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
773{
774 const char *s = MgPV_nolen_const (mg);
775
776 if (*s == '_')
777 {
778 SV **svp = 0;
779
780 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
781 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
782
783 if (svp)
784 {
785 SV *old = *svp;
786 *svp = 0;
787 SvREFCNT_dec (old);
788 return 0;
789 }
790 }
791
792 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
793}
794
795static int
796coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
797{
798 const char *s = MgPV_nolen_const (mg);
799
800 if (*s == '_')
801 {
802 SV **svp = 0;
803
804 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806
807 if (svp)
808 {
809 SV *old = *svp;
810 *svp = newSVsv (sv);
811 SvREFCNT_dec (old);
812 return 0;
813 }
814 }
815
816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
817}
818
819static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{
822 /* kind of mega-hacky, but works */
823 ta->next = ta->prev = (struct coro *)ta;
824}
825
826static int
827slf_check_nop (pTHX_ struct CoroSLF *frame)
828{
829 return 0;
830}
831
832static void NOINLINE /* noinline to keep it out of the transfer fast path */
620setup_coro (pTHX_ struct coro *coro) 833coro_setup (pTHX_ struct coro *coro)
621{ 834{
622 /* 835 /*
623 * emulate part of the perl startup here. 836 * emulate part of the perl startup here.
624 */ 837 */
625 coro_init_stacks (aTHX); 838 coro_init_stacks (aTHX);
… …
627 PL_runops = RUNOPS_DEFAULT; 840 PL_runops = RUNOPS_DEFAULT;
628 PL_curcop = &PL_compiling; 841 PL_curcop = &PL_compiling;
629 PL_in_eval = EVAL_NULL; 842 PL_in_eval = EVAL_NULL;
630 PL_comppad = 0; 843 PL_comppad = 0;
631 PL_curpm = 0; 844 PL_curpm = 0;
845 PL_curpad = 0;
632 PL_localizing = 0; 846 PL_localizing = 0;
633 PL_dirty = 0; 847 PL_dirty = 0;
634 PL_restartop = 0; 848 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0;
851#endif
852
853 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
856
857 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0);
860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
861 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
635 863
636 { 864 {
637 dSP; 865 dSP;
638 LOGOP myop; 866 UNOP myop;
639 867
640 SvREFCNT_dec (GvAV (PL_defgv));
641 GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643 Zero (&myop, 1, LOGOP); 868 Zero (&myop, 1, UNOP);
644 myop.op_next = Nullop; 869 myop.op_next = Nullop;
645 myop.op_flags = OPf_WANT_VOID; 870 myop.op_flags = OPf_WANT_VOID;
646 871
647 PUSHMARK (SP); 872 PUSHMARK (SP);
648 XPUSHs (av_shift (GvAV (PL_defgv))); 873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649 PUTBACK; 874 PUTBACK;
650 PL_op = (OP *)&myop; 875 PL_op = (OP *)&myop;
651 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652 SPAGAIN; 877 SPAGAIN;
653 } 878 }
654 879
655 ENTER; /* necessary e.g. for dounwind */ 880 /* this newly created coroutine might be run on an existing cctx which most
656} 881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
657 885
886 coro_throw = coro->throw;
887}
888
658static void 889static void
890coro_destruct (pTHX_ struct coro *coro)
891{
892 if (!IN_DESTRUCT)
893 {
894 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0);
896 assert (PL_tmps_floor == -1);
897
898 /* free all temporaries */
899 FREETMPS;
900 assert (PL_tmps_ix == -1);
901
902 /* unwind all extra stacks */
903 POPSTACK_TO (PL_mainstack);
904
905 /* unwind main stack */
906 dounwind (-1);
907 }
908
909 SvREFCNT_dec (GvSV (PL_defgv));
910 SvREFCNT_dec (GvAV (PL_defgv));
911 SvREFCNT_dec (GvSV (PL_errgv));
912 SvREFCNT_dec (PL_defoutgv);
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918
919 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw);
921
922 coro_destruct_stacks (aTHX);
923}
924
925INLINE void
659free_coro_mortal (pTHX) 926free_coro_mortal (pTHX)
660{ 927{
661 if (coro_mortal) 928 if (expect_true (coro_mortal))
662 { 929 {
663 SvREFCNT_dec (coro_mortal); 930 SvREFCNT_dec (coro_mortal);
664 coro_mortal = 0; 931 coro_mortal = 0;
665 } 932 }
666} 933}
… …
668static int 935static int
669runops_trace (pTHX) 936runops_trace (pTHX)
670{ 937{
671 COP *oldcop = 0; 938 COP *oldcop = 0;
672 int oldcxix = -2; 939 int oldcxix = -2;
673 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
674 coro_cctx *cctx = coro->cctx; 941 coro_cctx *cctx = coro->cctx;
675 942
676 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
677 { 944 {
678 PERL_ASYNC_CHECK (); 945 PERL_ASYNC_CHECK ();
… …
695 bot = PL_stack_base + cx->blk_oldsp + 1; 962 bot = PL_stack_base + cx->blk_oldsp + 1;
696 top = cx->blk_gimme == G_ARRAY ? SP + 1 963 top = cx->blk_gimme == G_ARRAY ? SP + 1
697 : cx->blk_gimme == G_SCALAR ? bot + 1 964 : cx->blk_gimme == G_SCALAR ? bot + 1
698 : bot; 965 : bot;
699 966
967 av_extend (av, top - bot);
700 while (bot < top) 968 while (bot < top)
701 av_push (av, SvREFCNT_inc (*bot++)); 969 av_push (av, SvREFCNT_inc_NN (*bot++));
702 970
703 PL_runops = RUNOPS_DEFAULT; 971 PL_runops = RUNOPS_DEFAULT;
704 ENTER; 972 ENTER;
705 SAVETMPS; 973 SAVETMPS;
706 EXTEND (SP, 3); 974 EXTEND (SP, 3);
… …
744 SAVETMPS; 1012 SAVETMPS;
745 EXTEND (SP, 3); 1013 EXTEND (SP, 3);
746 PUSHMARK (SP); 1014 PUSHMARK (SP);
747 PUSHs (&PL_sv_yes); 1015 PUSHs (&PL_sv_yes);
748 PUSHs (fullname); 1016 PUSHs (fullname);
749 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750 PUTBACK; 1018 PUTBACK;
751 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
752 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
753 SPAGAIN; 1021 SPAGAIN;
754 FREETMPS; 1022 FREETMPS;
… …
786 1054
787 TAINT_NOT; 1055 TAINT_NOT;
788 return 0; 1056 return 0;
789} 1057}
790 1058
1059static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1061{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0;
1064}
1065
791/* inject a fake call to Coro::State::_cctx_init into the execution */ 1066/* inject a fake call to Coro::State::_cctx_init into the execution */
792/* _cctx_init should be careful, as it could be called at almost any time */ 1067/* _cctx_init should be careful, as it could be called at almost any time */
793/* during execution of a perl program */ 1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
794static void NOINLINE 1070static void NOINLINE
795prepare_cctx (pTHX_ coro_cctx *cctx) 1071cctx_prepare (pTHX_ coro_cctx *cctx)
796{ 1072{
797 dSP; 1073 dSP;
798 LOGOP myop; 1074 UNOP myop;
799 1075
800 PL_top_env = &PL_start_env; 1076 PL_top_env = &PL_start_env;
801 1077
802 if (cctx->flags & CC_TRACE) 1078 if (cctx->flags & CC_TRACE)
803 PL_runops = runops_trace; 1079 PL_runops = runops_trace;
804 1080
805 Zero (&myop, 1, LOGOP); 1081 Zero (&myop, 1, UNOP);
806 myop.op_next = PL_op; 1082 myop.op_next = PL_op;
807 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
808 1084
809 PUSHMARK (SP); 1085 PUSHMARK (SP);
810 EXTEND (SP, 2); 1086 EXTEND (SP, 2);
811 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1087 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
812 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
813 PUTBACK; 1089 PUTBACK;
814 PL_op = (OP *)&myop; 1090 PL_op = (OP *)&myop;
815 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
816 SPAGAIN; 1092 SPAGAIN;
817} 1093}
818 1094
1095/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void
1097transfer_tail (pTHX)
1098{
1099 free_coro_mortal (aTHX);
1100}
1101
819/* 1102/*
820 * this is a _very_ stripped down perl interpreter ;) 1103 * this is a _very_ stripped down perl interpreter ;)
821 */ 1104 */
822static void 1105static void
823coro_run (void *arg) 1106cctx_run (void *arg)
824{ 1107{
1108#ifdef USE_ITHREADS
1109# if CORO_PTHREAD
1110 PERL_SET_CONTEXT (coro_thx);
1111# endif
1112#endif
1113 {
825 dTHX; 1114 dTHX;
826 1115
827 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1116 /* normally we would need to skip the entersub here */
828 UNLOCK; 1117 /* not doing so will re-execute it, which is exactly what we want */
829
830 /* we now skip the entersub that lead to transfer() */
831 PL_op = PL_op->op_next; 1118 /* PL_nop = PL_nop->op_next */
832 1119
833 /* inject a fake subroutine call to cctx_init */ 1120 /* inject a fake subroutine call to cctx_init */
834 prepare_cctx (aTHX_ (coro_cctx *)arg); 1121 cctx_prepare (aTHX_ (coro_cctx *)arg);
835 1122
1123 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX);
1125
836 /* somebody or something will hit me for both perl_run and PL_restartop */ 1126 /* somebody or something will hit me for both perl_run and PL_restartop */
837 PL_restartop = PL_op; 1127 PL_restartop = PL_op;
838 perl_run (PL_curinterp); 1128 perl_run (PL_curinterp);
839 1129
840 /* 1130 /*
841 * If perl-run returns we assume exit() was being called or the coro 1131 * If perl-run returns we assume exit() was being called or the coro
842 * fell off the end, which seems to be the only valid (non-bug) 1132 * fell off the end, which seems to be the only valid (non-bug)
843 * reason for perl_run to return. We try to exit by jumping to the 1133 * reason for perl_run to return. We try to exit by jumping to the
844 * bootstrap-time "top" top_env, as we cannot restore the "main" 1134 * bootstrap-time "top" top_env, as we cannot restore the "main"
845 * coroutine as Coro has no such concept 1135 * coroutine as Coro has no such concept
846 */ 1136 */
847 PL_top_env = main_top_env; 1137 PL_top_env = main_top_env;
848 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 }
849} 1140}
850 1141
851static coro_cctx * 1142static coro_cctx *
852cctx_new () 1143cctx_new ()
853{ 1144{
854 coro_cctx *cctx; 1145 coro_cctx *cctx;
1146
1147 ++cctx_count;
1148 New (0, cctx, 1, coro_cctx);
1149
1150 cctx->gen = cctx_gen;
1151 cctx->flags = 0;
1152 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1153
1154 return cctx;
1155}
1156
1157/* create a new cctx only suitable as source */
1158static coro_cctx *
1159cctx_new_empty ()
1160{
1161 coro_cctx *cctx = cctx_new ();
1162
1163 cctx->sptr = 0;
1164 coro_create (&cctx->cctx, 0, 0, 0, 0);
1165
1166 return cctx;
1167}
1168
1169/* create a new cctx suitable as destination/running a perl interpreter */
1170static coro_cctx *
1171cctx_new_run ()
1172{
1173 coro_cctx *cctx = cctx_new ();
855 void *stack_start; 1174 void *stack_start;
856 size_t stack_size; 1175 size_t stack_size;
857 1176
858 ++cctx_count;
859
860 Newz (0, cctx, 1, coro_cctx);
861
862#if HAVE_MMAP 1177#if HAVE_MMAP
863
864 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1178 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865 /* mmap supposedly does allocate-on-write for us */ 1179 /* mmap supposedly does allocate-on-write for us */
866 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
867 1181
868 if (cctx->sptr != (void *)-1) 1182 if (cctx->sptr != (void *)-1)
869 { 1183 {
870# if CORO_STACKGUARD 1184 #if CORO_STACKGUARD
871 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
872# endif 1186 #endif
873 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
874 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
875 cctx->flags |= CC_MAPPED; 1189 cctx->flags |= CC_MAPPED;
876 } 1190 }
877 else 1191 else
878#endif 1192#endif
879 { 1193 {
880 cctx->ssize = coro_stacksize * (long)sizeof (long); 1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
881 New (0, cctx->sptr, coro_stacksize, long); 1195 New (0, cctx->sptr, cctx_stacksize, long);
882 1196
883 if (!cctx->sptr) 1197 if (!cctx->sptr)
884 { 1198 {
885 perror ("FATAL: unable to allocate stack for coroutine"); 1199 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
886 _exit (EXIT_FAILURE); 1200 _exit (EXIT_FAILURE);
887 } 1201 }
888 1202
889 stack_start = cctx->sptr; 1203 stack_start = cctx->sptr;
890 stack_size = cctx->ssize; 1204 stack_size = cctx->ssize;
891 } 1205 }
892 1206
893 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
894 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895 1212
896 return cctx; 1213 return cctx;
897} 1214}
898 1215
899static void 1216static void
… …
901{ 1218{
902 if (!cctx) 1219 if (!cctx)
903 return; 1220 return;
904 1221
905 --cctx_count; 1222 --cctx_count;
1223 coro_destroy (&cctx->cctx);
906 1224
1225 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr)
1227 {
907#if CORO_USE_VALGRIND 1228 #if CORO_USE_VALGRIND
908 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
909#endif 1230 #endif
910 1231
911#if HAVE_MMAP 1232#if HAVE_MMAP
912 if (cctx->flags & CC_MAPPED) 1233 if (cctx->flags & CC_MAPPED)
913 munmap (cctx->sptr, cctx->ssize); 1234 munmap (cctx->sptr, cctx->ssize);
914 else 1235 else
915#endif 1236#endif
916 Safefree (cctx->sptr); 1237 Safefree (cctx->sptr);
1238 }
917 1239
918 Safefree (cctx); 1240 Safefree (cctx);
919} 1241}
1242
1243/* wether this cctx should be destructed */
1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
920 1245
921static coro_cctx * 1246static coro_cctx *
922cctx_get (pTHX) 1247cctx_get (pTHX)
923{ 1248{
924 while (cctx_first) 1249 while (expect_true (cctx_first))
925 { 1250 {
926 coro_cctx *cctx = cctx_first; 1251 coro_cctx *cctx = cctx_first;
927 cctx_first = cctx->next; 1252 cctx_first = cctx->next;
928 --cctx_idle; 1253 --cctx_idle;
929 1254
930 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1255 if (expect_true (!CCTX_EXPIRED (cctx)))
931 return cctx; 1256 return cctx;
932 1257
933 cctx_destroy (cctx); 1258 cctx_destroy (cctx);
934 } 1259 }
935 1260
936 return cctx_new (); 1261 return cctx_new_run ();
937} 1262}
938 1263
939static void 1264static void
940cctx_put (coro_cctx *cctx) 1265cctx_put (coro_cctx *cctx)
941{ 1266{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1268
942 /* free another cctx if overlimit */ 1269 /* free another cctx if overlimit */
943 if (cctx_idle >= MAX_IDLE_CCTX) 1270 if (expect_false (cctx_idle >= cctx_max_idle))
944 { 1271 {
945 coro_cctx *first = cctx_first; 1272 coro_cctx *first = cctx_first;
946 cctx_first = first->next; 1273 cctx_first = first->next;
947 --cctx_idle; 1274 --cctx_idle;
948 1275
… …
954 cctx_first = cctx; 1281 cctx_first = cctx;
955} 1282}
956 1283
957/** coroutine switching *****************************************************/ 1284/** coroutine switching *****************************************************/
958 1285
959static void NOINLINE 1286static void
960transfer_check (pTHX_ struct coro *prev, struct coro *next) 1287transfer_check (pTHX_ struct coro *prev, struct coro *next)
961{ 1288{
962 if (prev != next) 1289 /* TODO: throwing up here is considered harmful */
1290
1291 if (expect_true (prev != next))
963 { 1292 {
964 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
965 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
966 1295
967 if (next->flags & CF_RUNNING) 1296 if (expect_false (next->flags & CF_RUNNING))
968 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
969 1298
970 if (next->flags & CF_DESTROYED) 1299 if (expect_false (next->flags & CF_DESTROYED))
971 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
972 1301
1302#if !PERL_VERSION_ATLEAST (5,10,0)
973 if (PL_lex_state != LEX_NOTPARSING) 1303 if (expect_false (PL_lex_state != LEX_NOTPARSING))
974 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif
975 } 1306 }
976} 1307}
977 1308
978/* always use the TRANSFER macro */ 1309/* always use the TRANSFER macro */
979static void NOINLINE 1310static void NOINLINE /* noinline so we have a fixed stackframe */
980transfer (pTHX_ struct coro *prev, struct coro *next) 1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
981{ 1312{
982 dSTACKLEVEL; 1313 dSTACKLEVEL;
983 1314
984 /* sometimes transfer is only called to set idle_sp */ 1315 /* sometimes transfer is only called to set idle_sp */
985 if (!next) 1316 if (expect_false (!next))
986 { 1317 {
987 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
988 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
989 } 1320 }
990 else if (prev != next) 1321 else if (expect_true (prev != next))
991 { 1322 {
992 coro_cctx *prev__cctx; 1323 coro_cctx *prev__cctx;
993 1324
994 if (prev->flags & CF_NEW) 1325 if (expect_false (prev->flags & CF_NEW))
995 { 1326 {
996 /* create a new empty context */ 1327 /* create a new empty/source context */
997 Newz (0, prev->cctx, 1, coro_cctx); 1328 prev->cctx = cctx_new_empty ();
998 prev->flags &= ~CF_NEW; 1329 prev->flags &= ~CF_NEW;
999 prev->flags |= CF_RUNNING; 1330 prev->flags |= CF_RUNNING;
1000 } 1331 }
1001 1332
1002 prev->flags &= ~CF_RUNNING; 1333 prev->flags &= ~CF_RUNNING;
1003 next->flags |= CF_RUNNING; 1334 next->flags |= CF_RUNNING;
1004 1335
1005 LOCK; 1336 /* first get rid of the old state */
1337 save_perl (aTHX_ prev);
1006 1338
1007 if (next->flags & CF_NEW) 1339 if (expect_false (next->flags & CF_NEW))
1008 { 1340 {
1009 /* need to start coroutine */ 1341 /* need to start coroutine */
1010 next->flags &= ~CF_NEW; 1342 next->flags &= ~CF_NEW;
1011 /* first get rid of the old state */
1012 save_perl (aTHX_ prev);
1013 /* setup coroutine call */ 1343 /* setup coroutine call */
1014 setup_coro (aTHX_ next); 1344 coro_setup (aTHX_ next);
1015 } 1345 }
1016 else 1346 else
1347 load_perl (aTHX_ next);
1348
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */
1352 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel
1354 && !(prev__cctx->flags & CC_TRACE)
1355 && !force_cctx
1356 ))
1017 { 1357 {
1018 /* coroutine already started */
1019 save_perl (aTHX_ prev);
1020 load_perl (aTHX_ next);
1021 }
1022
1023 prev__cctx = prev->cctx;
1024
1025 /* possibly "free" the cctx */
1026 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1027 {
1028 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1029 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1030 1360
1031 prev->cctx = 0; 1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1366 if (!next->cctx)
1367 next->cctx = cctx_get (aTHX);
1032 1368
1033 cctx_put (prev__cctx); 1369 cctx_put (prev__cctx);
1034 } 1370 }
1035 1371
1036 ++next->usecount; 1372 ++next->usecount;
1037 1373
1038 if (!next->cctx) 1374 if (expect_true (!next->cctx))
1039 next->cctx = cctx_get (aTHX); 1375 next->cctx = cctx_get (aTHX);
1040 1376
1041 if (prev__cctx != next->cctx) 1377 if (expect_false (prev__cctx != next->cctx))
1042 { 1378 {
1043 prev__cctx->top_env = PL_top_env; 1379 prev__cctx->top_env = PL_top_env;
1044 PL_top_env = next->cctx->top_env; 1380 PL_top_env = next->cctx->top_env;
1045 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046 } 1382 }
1047 1383
1048 free_coro_mortal (aTHX); 1384 transfer_tail (aTHX);
1049 UNLOCK;
1050 } 1385 }
1051} 1386}
1052 1387
1053struct transfer_args
1054{
1055 struct coro *prev, *next;
1056};
1057
1058#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1059#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060 1390
1061/** high level stuff ********************************************************/ 1391/** high level stuff ********************************************************/
1062 1392
1063static int 1393static int
1064coro_state_destroy (pTHX_ struct coro *coro) 1394coro_state_destroy (pTHX_ struct coro *coro)
1065{ 1395{
1066 if (coro->flags & CF_DESTROYED) 1396 if (coro->flags & CF_DESTROYED)
1067 return 0; 1397 return 0;
1398
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro);
1068 1401
1069 coro->flags |= CF_DESTROYED; 1402 coro->flags |= CF_DESTROYED;
1070 1403
1071 if (coro->flags & CF_READY) 1404 if (coro->flags & CF_READY)
1072 { 1405 {
1073 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1406 /* reduce nready, as destroying a ready coro effectively unreadies it */
1074 /* alternative: look through all ready queues and remove the coro */ 1407 /* alternative: look through all ready queues and remove the coro */
1075 LOCK;
1076 --coro_nready; 1408 --coro_nready;
1077 UNLOCK;
1078 } 1409 }
1079 else 1410 else
1080 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1081 1412
1082 if (coro->mainstack && coro->mainstack != main_mainstack) 1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1083 { 1414 {
1084 struct coro temp; 1415 struct coro temp;
1085 1416
1086 assert (!(coro->flags & CF_RUNNING)); 1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1087
1088 Zero (&temp, 1, struct coro);
1089 temp.save = CORO_SAVE_ALL;
1090
1091 if (coro->flags & CF_RUNNING)
1092 croak ("FATAL: tried to destroy currently running coroutine");
1093 1418
1094 save_perl (aTHX_ &temp); 1419 save_perl (aTHX_ &temp);
1095 load_perl (aTHX_ coro); 1420 load_perl (aTHX_ coro);
1096 1421
1097 coro_destroy_stacks (aTHX); 1422 coro_destruct (aTHX_ coro);
1098 1423
1099 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1424 load_perl (aTHX_ &temp);
1100 1425
1101 coro->mainstack = 0; 1426 coro->slot = 0;
1102 } 1427 }
1103 1428
1104 cctx_destroy (coro->cctx); 1429 cctx_destroy (coro->cctx);
1105 SvREFCNT_dec (coro->args); 1430 SvREFCNT_dec (coro->args);
1106 1431
… …
1148# define MGf_DUP 0 1473# define MGf_DUP 0
1149#endif 1474#endif
1150}; 1475};
1151 1476
1152static void 1477static void
1153prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1478prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1154{ 1479{
1155 ta->prev = SvSTATE (prev_sv); 1480 ta->prev = SvSTATE (prev_sv);
1156 ta->next = SvSTATE (next_sv); 1481 ta->next = SvSTATE (next_sv);
1157 TRANSFER_CHECK (*ta); 1482 TRANSFER_CHECK (*ta);
1158} 1483}
1159 1484
1160static void 1485static void
1161api_transfer (SV *prev_sv, SV *next_sv) 1486api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1162{ 1487{
1163 dTHX;
1164 struct transfer_args ta; 1488 struct coro_transfer_args ta;
1165 1489
1166 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167 TRANSFER (ta); 1491 TRANSFER (ta, 1);
1168}
1169
1170static int
1171api_save (SV *coro_sv, int new_save)
1172{
1173 dTHX;
1174 struct coro *coro = SvSTATE (coro_sv);
1175 int old_save = coro->save;
1176
1177 if (new_save >= 0)
1178 coro->save = new_save;
1179
1180 return old_save;
1181} 1492}
1182 1493
1183/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
1184 1495
1185static void 1496INLINE void
1186coro_enq (pTHX_ SV *coro_sv) 1497coro_enq (pTHX_ struct coro *coro)
1187{ 1498{
1188 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1189} 1500}
1190 1501
1191static SV * 1502INLINE SV *
1192coro_deq (pTHX_ int min_prio) 1503coro_deq (pTHX)
1193{ 1504{
1194 int prio = PRIO_MAX - PRIO_MIN; 1505 int prio;
1195 1506
1196 min_prio -= PRIO_MIN;
1197 if (min_prio < 0)
1198 min_prio = 0;
1199
1200 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201 if (AvFILLp (coro_ready [prio]) >= 0) 1508 if (AvFILLp (coro_ready [prio]) >= 0)
1202 return av_shift (coro_ready [prio]); 1509 return av_shift (coro_ready [prio]);
1203 1510
1204 return 0; 1511 return 0;
1205} 1512}
1206 1513
1207static int 1514static int
1208api_ready (SV *coro_sv) 1515api_ready (pTHX_ SV *coro_sv)
1209{ 1516{
1210 dTHX;
1211 struct coro *coro; 1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1212 1520
1213 if (SvROK (coro_sv)) 1521 if (SvROK (coro_sv))
1214 coro_sv = SvRV (coro_sv); 1522 coro_sv = SvRV (coro_sv);
1215 1523
1216 coro = SvSTATE (coro_sv); 1524 coro = SvSTATE (coro_sv);
… …
1218 if (coro->flags & CF_READY) 1526 if (coro->flags & CF_READY)
1219 return 0; 1527 return 0;
1220 1528
1221 coro->flags |= CF_READY; 1529 coro->flags |= CF_READY;
1222 1530
1223 LOCK; 1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1224 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro);
1225 ++coro_nready; 1535 ++coro_nready;
1226 UNLOCK; 1536
1537 if (sv_hook)
1538 {
1539 dSP;
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1227 1555
1228 return 1; 1556 return 1;
1229} 1557}
1230 1558
1231static int 1559static int
1232api_is_ready (SV *coro_sv) 1560api_is_ready (pTHX_ SV *coro_sv)
1233{ 1561{
1234 dTHX;
1235 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1562 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1236} 1563}
1237 1564
1238static void 1565INLINE void
1239prepare_schedule (pTHX_ struct transfer_args *ta) 1566prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1240{ 1567{
1241 SV *prev_sv, *next_sv; 1568 SV *prev_sv, *next_sv;
1242 1569
1243 for (;;) 1570 for (;;)
1244 { 1571 {
1245 LOCK;
1246 next_sv = coro_deq (aTHX_ PRIO_MIN); 1572 next_sv = coro_deq (aTHX);
1247 1573
1248 /* nothing to schedule: call the idle handler */ 1574 /* nothing to schedule: call the idle handler */
1249 if (!next_sv) 1575 if (expect_false (!next_sv))
1250 { 1576 {
1251 dSP; 1577 dSP;
1252 UNLOCK;
1253 1578
1254 ENTER; 1579 ENTER;
1255 SAVETMPS; 1580 SAVETMPS;
1256 1581
1257 PUSHMARK (SP); 1582 PUSHMARK (SP);
1258 PUTBACK; 1583 PUTBACK;
1259 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1260 1586
1261 FREETMPS; 1587 FREETMPS;
1262 LEAVE; 1588 LEAVE;
1263 continue; 1589 continue;
1264 } 1590 }
1265 1591
1266 ta->next = SvSTATE (next_sv); 1592 ta->next = SvSTATE_hv (next_sv);
1267 1593
1268 /* cannot transfer to destroyed coros, skip and look for next */ 1594 /* cannot transfer to destroyed coros, skip and look for next */
1269 if (ta->next->flags & CF_DESTROYED) 1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1270 { 1596 {
1271 UNLOCK;
1272 SvREFCNT_dec (next_sv); 1597 SvREFCNT_dec (next_sv);
1273 /* coro_nready is already taken care of by destroy */ 1598 /* coro_nready has already been taken care of by destroy */
1274 continue; 1599 continue;
1275 } 1600 }
1276 1601
1277 --coro_nready; 1602 --coro_nready;
1278 UNLOCK;
1279 break; 1603 break;
1280 } 1604 }
1281 1605
1282 /* free this only after the transfer */ 1606 /* free this only after the transfer */
1283 prev_sv = SvRV (coro_current); 1607 prev_sv = SvRV (coro_current);
1284 ta->prev = SvSTATE (prev_sv); 1608 ta->prev = SvSTATE_hv (prev_sv);
1285 TRANSFER_CHECK (*ta); 1609 TRANSFER_CHECK (*ta);
1286 assert (ta->next->flags & CF_READY); 1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1287 ta->next->flags &= ~CF_READY; 1611 ta->next->flags &= ~CF_READY;
1288 SvRV_set (coro_current, next_sv); 1612 SvRV_set (coro_current, next_sv);
1289 1613
1290 LOCK;
1291 free_coro_mortal (aTHX); 1614 free_coro_mortal (aTHX);
1292 coro_mortal = prev_sv; 1615 coro_mortal = prev_sv;
1293 UNLOCK;
1294} 1616}
1295 1617
1296static void 1618INLINE void
1297prepare_cede (pTHX_ struct transfer_args *ta) 1619prepare_cede (pTHX_ struct coro_transfer_args *ta)
1298{ 1620{
1299 api_ready (coro_current); 1621 api_ready (aTHX_ coro_current);
1300 prepare_schedule (aTHX_ ta); 1622 prepare_schedule (aTHX_ ta);
1301} 1623}
1302 1624
1625INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{
1628 SV *prev = SvRV (coro_current);
1629
1630 if (coro_nready)
1631 {
1632 prepare_schedule (aTHX_ ta);
1633 api_ready (aTHX_ prev);
1634 }
1635 else
1636 prepare_nop (aTHX_ ta);
1637}
1638
1639static void
1640api_schedule (pTHX)
1641{
1642 struct coro_transfer_args ta;
1643
1644 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1);
1646}
1647
1303static int 1648static int
1304prepare_cede_notself (pTHX_ struct transfer_args *ta) 1649api_cede (pTHX)
1305{ 1650{
1306 if (coro_nready) 1651 struct coro_transfer_args ta;
1307 { 1652
1308 SV *prev = SvRV (coro_current);
1309 prepare_schedule (aTHX_ ta); 1653 prepare_cede (aTHX_ &ta);
1310 api_ready (prev); 1654
1655 if (expect_true (ta.prev != ta.next))
1656 {
1657 TRANSFER (ta, 1);
1311 return 1; 1658 return 1;
1312 } 1659 }
1313 else 1660 else
1314 return 0; 1661 return 0;
1315} 1662}
1316 1663
1317static void
1318api_schedule (void)
1319{
1320 dTHX;
1321 struct transfer_args ta;
1322
1323 prepare_schedule (aTHX_ &ta);
1324 TRANSFER (ta);
1325}
1326
1327static int 1664static int
1328api_cede (void) 1665api_cede_notself (pTHX)
1329{ 1666{
1330 dTHX; 1667 if (coro_nready)
1668 {
1331 struct transfer_args ta; 1669 struct coro_transfer_args ta;
1332 1670
1333 prepare_cede (aTHX_ &ta); 1671 prepare_cede_notself (aTHX_ &ta);
1334
1335 if (ta.prev != ta.next)
1336 {
1337 TRANSFER (ta); 1672 TRANSFER (ta, 1);
1338 return 1; 1673 return 1;
1339 } 1674 }
1340 else 1675 else
1341 return 0; 1676 return 0;
1342} 1677}
1343 1678
1344static int 1679static void
1345api_cede_notself (void)
1346{
1347 dTHX;
1348 struct transfer_args ta;
1349
1350 if (prepare_cede_notself (aTHX_ &ta))
1351 {
1352 TRANSFER (ta);
1353 return 1;
1354 }
1355 else
1356 return 0;
1357}
1358
1359static void
1360api_trace (SV *coro_sv, int flags) 1680api_trace (pTHX_ SV *coro_sv, int flags)
1361{ 1681{
1362 dTHX;
1363 struct coro *coro = SvSTATE (coro_sv); 1682 struct coro *coro = SvSTATE (coro_sv);
1364 1683
1365 if (flags & CC_TRACE) 1684 if (flags & CC_TRACE)
1366 { 1685 {
1367 if (!coro->cctx) 1686 if (!coro->cctx)
1368 coro->cctx = cctx_new (); 1687 coro->cctx = cctx_new_run ();
1369 else if (!(coro->cctx->flags & CC_TRACE)) 1688 else if (!(coro->cctx->flags & CC_TRACE))
1370 croak ("cannot enable tracing on coroutine with custom stack"); 1689 croak ("cannot enable tracing on coroutine with custom stack,");
1371 1690
1372 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1373 } 1692 }
1374 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1375 { 1694 {
1376 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1695 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1377 1696
1378 if (coro->flags & CF_RUNNING) 1697 if (coro->flags & CF_RUNNING)
1379 PL_runops = RUNOPS_DEFAULT; 1698 PL_runops = RUNOPS_DEFAULT;
1380 else 1699 else
1381 coro->runops = RUNOPS_DEFAULT; 1700 coro->slot->runops = RUNOPS_DEFAULT;
1701 }
1702}
1703
1704/*****************************************************************************/
1705/* PerlIO::cede */
1706
1707typedef struct
1708{
1709 PerlIOBuf base;
1710 NV next, every;
1711} PerlIOCede;
1712
1713static IV
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every;
1720
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722}
1723
1724static SV *
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728
1729 return newSVnv (self->every);
1730}
1731
1732static IV
1733PerlIOCede_flush (pTHX_ PerlIO *f)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736 double now = nvtime ();
1737
1738 if (now >= self->next)
1739 {
1740 api_cede (aTHX);
1741 self->next = now + self->every;
1742 }
1743
1744 return PerlIOBuf_flush (aTHX_ f);
1745}
1746
1747static PerlIO_funcs PerlIO_cede =
1748{
1749 sizeof(PerlIO_funcs),
1750 "cede",
1751 sizeof(PerlIOCede),
1752 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1753 PerlIOCede_pushed,
1754 PerlIOBuf_popped,
1755 PerlIOBuf_open,
1756 PerlIOBase_binmode,
1757 PerlIOCede_getarg,
1758 PerlIOBase_fileno,
1759 PerlIOBuf_dup,
1760 PerlIOBuf_read,
1761 PerlIOBuf_unread,
1762 PerlIOBuf_write,
1763 PerlIOBuf_seek,
1764 PerlIOBuf_tell,
1765 PerlIOBuf_close,
1766 PerlIOCede_flush,
1767 PerlIOBuf_fill,
1768 PerlIOBase_eof,
1769 PerlIOBase_error,
1770 PerlIOBase_clearerr,
1771 PerlIOBase_setlinebuf,
1772 PerlIOBuf_get_base,
1773 PerlIOBuf_bufsiz,
1774 PerlIOBuf_get_ptr,
1775 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt,
1777};
1778
1779/*****************************************************************************/
1780
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP *
1791pp_restore (pTHX)
1792{
1793 int i;
1794 SV **SP = PL_stack_base + slf_ax;
1795
1796 PUSHMARK (SP);
1797
1798 EXTEND (SP, slf_argc + 1);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806}
1807
1808static void
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1382 } 1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1383} 1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006
2007static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{
2010 SV *count_sv = AvARRAY (av)[0];
2011 IV count = SvIVX (count_sv);
2012
2013 count += adjust;
2014 SvIVX (count_sv) = count;
2015
2016 /* now wake up as many waiters as are expected to lock */
2017 while (count > 0 && AvFILLp (av) > 0)
2018 {
2019 SV *cb;
2020
2021 /* swap first two elements so we can shift a waiter */
2022 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av);
2025
2026 if (SvOBJECT (cb))
2027 api_ready (aTHX_ cb);
2028 else
2029 croak ("callbacks not yet supported");
2030
2031 SvREFCNT_dec (cb);
2032
2033 --count;
2034 }
2035}
2036
2037static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2039{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042}
2043
2044static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2046{
2047 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0];
2049
2050 if (SvIVX (count_sv) > 0)
2051 {
2052 SvSTATE_current->on_destroy = 0;
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2054 return 0;
2055 }
2056 else
2057 {
2058 int i;
2059 /* if we were woken up but can't down, we look through the whole */
2060 /* waiters list and only add us if we aren't in there already */
2061 /* this avoids some degenerate memory usage cases */
2062
2063 for (i = 1; i <= AvFILLp (av); ++i)
2064 if (AvARRAY (av)[i] == SvRV (coro_current))
2065 return 1;
2066
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1;
2069 }
2070}
2071
2072static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 AV *av = (AV *)SvRV (arg [0]);
2076
2077 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 {
2079 frame->data = (void *)av;
2080 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 }
2083 else
2084 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 }
2095
2096 frame->check = slf_check_semaphore_down;
2097
2098}
2099
2100/*****************************************************************************/
2101
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2103
2104/* create a closure from XS, returns a code reference */
2105/* the arg can be accessed via GENSUB_ARG from the callback */
2106/* the callback must use dXSARGS/XSRETURN */
2107static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2109{
2110 CV *cv = (CV *)NEWSV (0, 0);
2111
2112 sv_upgrade ((SV *)cv, SVt_PVCV);
2113
2114 CvANON_on (cv);
2115 CvISXSUB_on (cv);
2116 CvXSUB (cv) = xsub;
2117 GENSUB_ARG = arg;
2118
2119 return newRV_noinc ((SV *)cv);
2120}
2121
2122/*****************************************************************************/
1384 2123
1385MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386 2125
1387PROTOTYPES: DISABLE 2126PROTOTYPES: DISABLE
1388 2127
1389BOOT: 2128BOOT:
1390{ 2129{
1391#ifdef USE_ITHREADS 2130#ifdef USE_ITHREADS
1392 MUTEX_INIT (&coro_mutex); 2131# if CORO_PTHREAD
2132 coro_thx = PERL_GET_CONTEXT;
2133# endif
1393#endif 2134#endif
1394 BOOT_PAGESIZE; 2135 BOOT_PAGESIZE;
2136
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2142 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2143
2144 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2145 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2146 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395 2147
1396 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2148 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397 2149
1398 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2150 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2151 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 2152 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 2153 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402 2154
1403 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1404 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1405 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1406 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1407 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1408 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1409 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1410
1411 main_mainstack = PL_mainstack; 2155 main_mainstack = PL_mainstack;
1412 main_top_env = PL_top_env; 2156 main_top_env = PL_top_env;
1413 2157
1414 while (main_top_env->je_prev) 2158 while (main_top_env->je_prev)
1415 main_top_env = main_top_env->je_prev; 2159 main_top_env = main_top_env->je_prev;
1416 2160
2161 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf,
2166 newSVpv ("coro_slf", 0), 0);
2167
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf,
2170 newSVpv ("coro schedule like function", 0), 0);
2171 }
2172
1417 coroapi.ver = CORO_API_VERSION; 2173 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION;
2175
1418 coroapi.transfer = api_transfer; 2176 coroapi.transfer = api_transfer;
2177
2178 coroapi.sv_state = SvSTATE_;
2179 coroapi.execute_slf = api_execute_slf;
2180 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself;
2184
2185 {
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
1419 2193
1420 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421} 2195}
1422 2196
1423SV * 2197SV *
1424new (char *klass, ...) 2198new (char *klass, ...)
1425 CODE: 2199 CODE:
1426{ 2200{
1427 struct coro *coro; 2201 struct coro *coro;
2202 MAGIC *mg;
1428 HV *hv; 2203 HV *hv;
1429 int i; 2204 int i;
1430 2205
1431 Newz (0, coro, 1, struct coro); 2206 Newz (0, coro, 1, struct coro);
1432 coro->args = newAV (); 2207 coro->args = newAV ();
1433 coro->save = CORO_SAVE_DEF;
1434 coro->flags = CF_NEW; 2208 coro->flags = CF_NEW;
1435 2209
1436 if (coro_first) coro_first->prev = coro; 2210 if (coro_first) coro_first->prev = coro;
1437 coro->next = coro_first; 2211 coro->next = coro_first;
1438 coro_first = coro; 2212 coro_first = coro;
1439 2213
1440 coro->hv = hv = newHV (); 2214 coro->hv = hv = newHV ();
1441 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP;
1442 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443 2218
2219 av_extend (coro->args, items - 1);
1444 for (i = 1; i < items; i++) 2220 for (i = 1; i < items; i++)
1445 av_push (coro->args, newSVsv (ST (i))); 2221 av_push (coro->args, newSVsv (ST (i)));
1446} 2222}
1447 OUTPUT: 2223 OUTPUT:
1448 RETVAL 2224 RETVAL
1449 2225
1450int
1451save (SV *coro, int new_save = -1)
1452 CODE:
1453 RETVAL = api_save (coro, new_save);
1454 OUTPUT:
1455 RETVAL
1456
1457int
1458save_also (SV *coro_sv, int save_also)
1459 CODE:
1460{
1461 struct coro *coro = SvSTATE (coro_sv);
1462 RETVAL = coro->save;
1463 coro->save |= save_also;
1464}
1465 OUTPUT:
1466 RETVAL
1467
1468# these not obviously related functions are all rolled into the same xs
1469# function to increase chances that they all will call transfer with the same
1470# stack offset
1471void 2226void
1472_set_stacklevel (...) 2227_set_stacklevel (...)
1473 ALIAS: 2228 CODE:
1474 Coro::State::transfer = 1 2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1475 Coro::schedule = 2
1476 Coro::cede = 3
1477 Coro::cede_notself = 4
1478 CODE:
1479{
1480 struct transfer_args ta;
1481 2230
1482 switch (ix) 2231void
1483 { 2232transfer (...)
1484 case 0: 2233 PROTOTYPE: $$
1485 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2234 CODE:
1486 ta.next = 0; 2235 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1487 break;
1488
1489 case 1:
1490 if (items != 2)
1491 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1492
1493 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1494 break;
1495
1496 case 2:
1497 prepare_schedule (aTHX_ &ta);
1498 break;
1499
1500 case 3:
1501 prepare_cede (aTHX_ &ta);
1502 break;
1503
1504 case 4:
1505 if (!prepare_cede_notself (aTHX_ &ta))
1506 XSRETURN_EMPTY;
1507
1508 break;
1509 }
1510
1511 BARRIER;
1512 TRANSFER (ta);
1513
1514 if (GIMME_V != G_VOID && ta.next != ta.prev)
1515 XSRETURN_YES;
1516}
1517 2236
1518bool 2237bool
1519_destroy (SV *coro_sv) 2238_destroy (SV *coro_sv)
1520 CODE: 2239 CODE:
1521 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1522 OUTPUT: 2241 OUTPUT:
1523 RETVAL 2242 RETVAL
1524 2243
1525void 2244void
1526_exit (code) 2245_exit (int code)
1527 int code
1528 PROTOTYPE: $ 2246 PROTOTYPE: $
1529 CODE: 2247 CODE:
1530 _exit (code); 2248 _exit (code);
1531 2249
1532int 2250int
1533cctx_stacksize (int new_stacksize = 0) 2251cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$
1534 CODE: 2253 CODE:
1535 RETVAL = coro_stacksize; 2254 RETVAL = cctx_stacksize;
1536 if (new_stacksize) 2255 if (new_stacksize)
2256 {
1537 coro_stacksize = new_stacksize; 2257 cctx_stacksize = new_stacksize;
2258 ++cctx_gen;
2259 }
1538 OUTPUT: 2260 OUTPUT:
1539 RETVAL 2261 RETVAL
1540 2262
1541int 2263int
2264cctx_max_idle (int max_idle = 0)
2265 PROTOTYPE: ;$
2266 CODE:
2267 RETVAL = cctx_max_idle;
2268 if (max_idle > 1)
2269 cctx_max_idle = max_idle;
2270 OUTPUT:
2271 RETVAL
2272
2273int
1542cctx_count () 2274cctx_count ()
2275 PROTOTYPE:
1543 CODE: 2276 CODE:
1544 RETVAL = cctx_count; 2277 RETVAL = cctx_count;
1545 OUTPUT: 2278 OUTPUT:
1546 RETVAL 2279 RETVAL
1547 2280
1548int 2281int
1549cctx_idle () 2282cctx_idle ()
2283 PROTOTYPE:
1550 CODE: 2284 CODE:
1551 RETVAL = cctx_idle; 2285 RETVAL = cctx_idle;
1552 OUTPUT: 2286 OUTPUT:
1553 RETVAL 2287 RETVAL
1554 2288
1555void 2289void
1556list () 2290list ()
2291 PROTOTYPE:
1557 PPCODE: 2292 PPCODE:
1558{ 2293{
1559 struct coro *coro; 2294 struct coro *coro;
1560 for (coro = coro_first; coro; coro = coro->next) 2295 for (coro = coro_first; coro; coro = coro->next)
1561 if (coro->hv) 2296 if (coro->hv)
… …
1566call (Coro::State coro, SV *coderef) 2301call (Coro::State coro, SV *coderef)
1567 ALIAS: 2302 ALIAS:
1568 eval = 1 2303 eval = 1
1569 CODE: 2304 CODE:
1570{ 2305{
1571 if (coro->mainstack) 2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1572 { 2307 {
1573 struct coro temp; 2308 struct coro temp;
1574 Zero (&temp, 1, struct coro);
1575 temp.save = CORO_SAVE_ALL;
1576 2309
1577 if (!(coro->flags & CF_RUNNING)) 2310 if (!(coro->flags & CF_RUNNING))
1578 { 2311 {
2312 PUTBACK;
1579 save_perl (aTHX_ &temp); 2313 save_perl (aTHX_ &temp);
1580 load_perl (aTHX_ coro); 2314 load_perl (aTHX_ coro);
1581 } 2315 }
1582 2316
1583 { 2317 {
1584 dSP; 2318 dSP;
1585 ENTER; 2319 ENTER;
1586 SAVETMPS; 2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK;
1587 PUSHMARK (SP); 2323 PUSHMARK (SP);
1588 PUTBACK; 2324
1589 if (ix) 2325 if (ix)
1590 eval_sv (coderef, 0); 2326 eval_sv (coderef, 0);
1591 else 2327 else
1592 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2329
2330 POPSTACK;
1593 SPAGAIN; 2331 SPAGAIN;
1594 FREETMPS; 2332 FREETMPS;
1595 LEAVE; 2333 LEAVE;
1596 PUTBACK; 2334 PUTBACK;
1597 } 2335 }
1598 2336
1599 if (!(coro->flags & CF_RUNNING)) 2337 if (!(coro->flags & CF_RUNNING))
1600 { 2338 {
1601 save_perl (aTHX_ coro); 2339 save_perl (aTHX_ coro);
1602 load_perl (aTHX_ &temp); 2340 load_perl (aTHX_ &temp);
2341 SPAGAIN;
1603 } 2342 }
1604 } 2343 }
1605} 2344}
1606 2345
1607SV * 2346SV *
… …
1616 RETVAL = boolSV (coro->flags & ix); 2355 RETVAL = boolSV (coro->flags & ix);
1617 OUTPUT: 2356 OUTPUT:
1618 RETVAL 2357 RETVAL
1619 2358
1620void 2359void
2360throw (Coro::State self, SV *throw = &PL_sv_undef)
2361 PROTOTYPE: $;$
2362 CODE:
2363{
2364 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw;
2366 SvREFCNT_dec (*throwp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2368}
2369
2370void
1621api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$
2373 C_ARGS: aTHX_ coro, flags
1622 2374
1623SV * 2375SV *
1624has_stack (Coro::State coro) 2376has_cctx (Coro::State coro)
1625 PROTOTYPE: $ 2377 PROTOTYPE: $
1626 CODE: 2378 CODE:
1627 RETVAL = boolSV (!!coro->cctx); 2379 RETVAL = boolSV (!!coro->cctx);
1628 OUTPUT: 2380 OUTPUT:
1629 RETVAL 2381 RETVAL
… …
1634 CODE: 2386 CODE:
1635 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2387 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1636 OUTPUT: 2388 OUTPUT:
1637 RETVAL 2389 RETVAL
1638 2390
1639IV 2391UV
1640rss (Coro::State coro) 2392rss (Coro::State coro)
1641 PROTOTYPE: $ 2393 PROTOTYPE: $
1642 ALIAS: 2394 ALIAS:
1643 usecount = 1 2395 usecount = 1
1644 CODE: 2396 CODE:
… …
1648 case 1: RETVAL = coro->usecount; break; 2400 case 1: RETVAL = coro->usecount; break;
1649 } 2401 }
1650 OUTPUT: 2402 OUTPUT:
1651 RETVAL 2403 RETVAL
1652 2404
2405void
2406force_cctx ()
2407 PROTOTYPE:
2408 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0;
2410
2411void
2412swap_defsv (Coro::State self)
2413 PROTOTYPE: $
2414 ALIAS:
2415 swap_defav = 1
2416 CODE:
2417 if (!self->slot)
2418 croak ("cannot swap state with coroutine that has no saved state,");
2419 else
2420 {
2421 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423
2424 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 }
1653 2426
1654MODULE = Coro::State PACKAGE = Coro 2427MODULE = Coro::State PACKAGE = Coro
1655 2428
1656BOOT: 2429BOOT:
1657{ 2430{
1658 int i; 2431 int i;
1659 2432
1660 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1661 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1662 av_async_pool = get_av ("Coro::async_pool", TRUE); 2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1663 2436
1664 coro_current = get_sv ("Coro::current", FALSE); 2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1665 SvREADONLY_on (coro_current); 2438 SvREADONLY_on (coro_current);
1666 2439
1667 coro_stash = gv_stashpv ("Coro", TRUE); 2440 coro_stash = gv_stashpv ("Coro", TRUE);
1668 2441
1669 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1670 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1671 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2444 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1672 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2445 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1675 2448
1676 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1677 coro_ready[i] = newAV (); 2450 coro_ready[i] = newAV ();
1678 2451
1679 { 2452 {
1680 SV *sv = perl_get_sv("Coro::API", 1); 2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1681 2454
1682 coroapi.schedule = api_schedule; 2455 coroapi.schedule = api_schedule;
1683 coroapi.save = api_save;
1684 coroapi.cede = api_cede; 2456 coroapi.cede = api_cede;
1685 coroapi.cede_notself = api_cede_notself; 2457 coroapi.cede_notself = api_cede_notself;
1686 coroapi.ready = api_ready; 2458 coroapi.ready = api_ready;
1687 coroapi.is_ready = api_is_ready; 2459 coroapi.is_ready = api_is_ready;
1688 coroapi.nready = &coro_nready; 2460 coroapi.nready = coro_nready;
1689 coroapi.current = coro_current; 2461 coroapi.current = coro_current;
1690 2462
1691 GCoroAPI = &coroapi; 2463 GCoroAPI = &coroapi;
1692 sv_setiv (sv, (IV)&coroapi); 2464 sv_setiv (sv, (IV)&coroapi);
1693 SvREADONLY_on (sv); 2465 SvREADONLY_on (sv);
1694 } 2466 }
1695} 2467}
2468
2469void
2470schedule (...)
2471 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2473
2474void
2475cede (...)
2476 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede);
2478
2479void
2480cede_notself (...)
2481 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1696 2483
1697void 2484void
1698_set_current (SV *current) 2485_set_current (SV *current)
1699 PROTOTYPE: $ 2486 PROTOTYPE: $
1700 CODE: 2487 CODE:
1701 SvREFCNT_dec (SvRV (coro_current)); 2488 SvREFCNT_dec (SvRV (coro_current));
1702 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2489 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2490
2491void
2492_set_readyhook (SV *hook)
2493 PROTOTYPE: $
2494 CODE:
2495 SvREFCNT_dec (coro_readyhook);
2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1703 2497
1704int 2498int
1705prio (Coro::State coro, int newprio = 0) 2499prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$
1706 ALIAS: 2501 ALIAS:
1707 nice = 1 2502 nice = 1
1708 CODE: 2503 CODE:
1709{ 2504{
1710 RETVAL = coro->prio; 2505 RETVAL = coro->prio;
… …
1725 2520
1726SV * 2521SV *
1727ready (SV *self) 2522ready (SV *self)
1728 PROTOTYPE: $ 2523 PROTOTYPE: $
1729 CODE: 2524 CODE:
1730 RETVAL = boolSV (api_ready (self)); 2525 RETVAL = boolSV (api_ready (aTHX_ self));
1731 OUTPUT: 2526 OUTPUT:
1732 RETVAL 2527 RETVAL
1733 2528
1734int 2529int
1735nready (...) 2530nready (...)
… …
1742# for async_pool speedup 2537# for async_pool speedup
1743void 2538void
1744_pool_1 (SV *cb) 2539_pool_1 (SV *cb)
1745 CODE: 2540 CODE:
1746{ 2541{
1747 int i, len;
1748 HV *hv = (HV *)SvRV (coro_current); 2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
1749 AV *defav = GvAV (PL_defgv); 2544 AV *defav = GvAV (PL_defgv);
1750 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1751 AV *invoke_av; 2546 AV *invoke_av;
2547 int i, len;
1752 2548
1753 if (!invoke) 2549 if (!invoke)
2550 {
2551 SV *old = PL_diehook;
2552 PL_diehook = 0;
2553 SvREFCNT_dec (old);
1754 croak ("\3terminate\2\n"); 2554 croak ("\3async_pool terminate\2\n");
2555 }
2556
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1755 2559
1756 hv_store (hv, "desc", sizeof ("desc") - 1, 2560 hv_store (hv, "desc", sizeof ("desc") - 1,
1757 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1758 2562
1759 invoke_av = (AV *)SvRV (invoke); 2563 invoke_av = (AV *)SvRV (invoke);
… …
1763 2567
1764 if (len > 0) 2568 if (len > 0)
1765 { 2569 {
1766 av_fill (defav, len - 1); 2570 av_fill (defav, len - 1);
1767 for (i = 0; i < len; ++i) 2571 for (i = 0; i < len; ++i)
1768 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1769 } 2573 }
1770
1771 SvREFCNT_dec (invoke);
1772} 2574}
1773 2575
1774void 2576void
1775_pool_2 (SV *cb) 2577_pool_2 (SV *cb)
1776 CODE: 2578 CODE:
1777{ 2579{
1778 struct coro *coro = SvSTATE (coro_current); 2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv);
1779 2582
1780 sv_setsv (cb, &PL_sv_undef); 2583 sv_setsv (cb, &PL_sv_undef);
1781 2584
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2586 coro->saved_deffh = 0;
2587
1782 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1783 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
1784 croak ("\3terminate\2\n"); 2594 croak ("\3async_pool terminate\2\n");
2595 }
1785 2596
1786 av_clear (GvAV (PL_defgv)); 2597 av_clear (GvAV (PL_defgv));
1787 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2598 hv_store (hv, "desc", sizeof ("desc") - 1,
1788 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1789 2600
1790 coro->save = CORO_SAVE_DEF;
1791 coro->prio = 0; 2601 coro->prio = 0;
1792 2602
1793 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1794 api_trace (coro_current, 0); 2604 api_trace (aTHX_ coro_current, 0);
1795 2605
1796 av_push (av_async_pool, newSVsv (coro_current)); 2606 av_push (av_async_pool, newSVsv (coro_current));
1797} 2607}
1798 2608
1799 2609
1800MODULE = Coro::State PACKAGE = Coro::AIO 2610MODULE = Coro::State PACKAGE = Coro::AIO
1801 2611
1802SV * 2612void
1803_get_state () 2613_get_state (SV *self)
2614 PROTOTYPE: $
1804 CODE: 2615 PPCODE:
1805{ 2616{
1806 struct io_state *data; 2617 AV *defav = GvAV (PL_defgv);
1807 2618 AV *av = newAV ();
2619 int i;
1808 RETVAL = newSV (sizeof (struct io_state)); 2620 SV *data_sv = newSV (sizeof (struct io_state));
1809 data = (struct io_state *)SvPVX (RETVAL); 2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1810 SvCUR_set (RETVAL, sizeof (struct io_state)); 2622 SvCUR_set (data_sv, sizeof (struct io_state));
1811 SvPOK_only (RETVAL); 2623 SvPOK_only (data_sv);
1812 2624
1813 data->errorno = errno; 2625 data->errorno = errno;
1814 data->laststype = PL_laststype; 2626 data->laststype = PL_laststype;
1815 data->laststatval = PL_laststatval; 2627 data->laststatval = PL_laststatval;
1816 data->statcache = PL_statcache; 2628 data->statcache = PL_statcache;
2629
2630 av_extend (av, AvFILLp (defav) + 1 + 1);
2631
2632 for (i = 0; i <= AvFILLp (defav); ++i)
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2634
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
1817} 2640}
1818 OUTPUT:
1819 RETVAL
1820 2641
1821void 2642void
1822_set_state (char *data_) 2643_set_state (SV *state)
1823 PROTOTYPE: $ 2644 PROTOTYPE: $
1824 CODE: 2645 PPCODE:
1825{ 2646{
1826 struct io_state *data = (void *)data_; 2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
1827 2650
1828 errno = data->errorno; 2651 errno = data->errorno;
1829 PL_laststype = data->laststype; 2652 PL_laststype = data->laststype;
1830 PL_laststatval = data->laststatval; 2653 PL_laststatval = data->laststatval;
1831 PL_statcache = data->statcache; 2654 PL_statcache = data->statcache;
1832}
1833 2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 {
2682 PUSHMARK (SP);
2683 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2685 SPAGAIN;
2686 }
2687
2688 --incede;
2689}
2690
2691
2692MODULE = Coro::State PACKAGE = PerlIO::cede
2693
2694BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696
2697MODULE = Coro::State PACKAGE = Coro::Semaphore
2698
2699SV *
2700new (SV *klass, SV *count_ = 0)
2701 CODE:
2702{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2704 AV *av = newAV ();
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2707}
2708 OUTPUT:
2709 RETVAL
2710
2711SV *
2712count (SV *self)
2713 CODE:
2714 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2715 OUTPUT:
2716 RETVAL
2717
2718void
2719up (SV *self, int adjust = 1)
2720 ALIAS:
2721 adjust = 1
2722 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724
2725void
2726down (SV *self)
2727 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2729
2730void
2731try (SV *self)
2732 PPCODE:
2733{
2734 AV *av = (AV *)SvRV (self);
2735 SV *count_sv = AvARRAY (av)[0];
2736 IV count = SvIVX (count_sv);
2737
2738 if (count > 0)
2739 {
2740 --count;
2741 SvIVX (count_sv) = count;
2742 XSRETURN_YES;
2743 }
2744 else
2745 XSRETURN_NO;
2746}
2747
2748void
2749waiters (SV *self)
2750 CODE:
2751{
2752 AV *av = (AV *)SvRV (self);
2753
2754 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2756 else
2757 {
2758 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1);
2760 for (i = 1; i <= AvFILLp (av); ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i]));
2762 }
2763}
2764

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